Trane Indoor Fireplace UH PRC002 EN User Manual

Indoor Gas

Heating Products

Unit Heaters

Duct Furnaces

February 2001

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Contents

Introduction

Feature Highlights

Features and Benefits

Application Considerations

Selection Procedure

Manual Selection Procedure

Model Number Description

General Data

Performance Data

Adjustment Factor

Controls

Electric Power

Dimension and Weights

Mechanical Specifications

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Features

Highlights

Ten-YearWarranty

Burners

The complete heat exchanger, draft hood

assembly of the unit heater and burners

are warranted byTrane to be free from

defects in material and workmanship for

a period of 10 years from the date of

manufacture. (Warranty not applicable

on duct furnaces or Separated

All sizes 30,000 through 400,000 Btu

input are equipped with a proven

design pressed steel burner having a

unique “burner shade” protective

device to prevent scale or foreign

matter from plugging the burner ports.

Energy Saving Intermittent Pilot Control

Combustion units.)

The pilot burner is ignited only during

each cycle of operation, thereby

Quiet Operation

Trane unit heaters incorporate an

exceptionally balanced fan blade to

assure quiet operation.

conserving energy during the off cycle.

LP/Natural Operation

All units are available for operation on

either natural or LP gas from our

factory.

Heat Exchangers

AllTrane heat exchangers are available in

three types of steel:

• Aluminized Steel (Standard)

• 409 Grade Stainless Steel (Optional)

(30-400 MBh units)

Easy Access For Maintenance

AllTrane unit heaters are so designed

that the burner access panel is removed

with just two screws. Burners are

individually removable for inspection

and servicing. Pilot is also accessible

through side panel access door.

• 321 Grade Stainless Steel (Optional)

(100-400 MBh units)

24V System

All units are equipped with a 24Vcontrol

system which is powered by a 24V

transformer as standard equipment.

Test Fired

AllTrane unit heaters are test fired to

assure proper operation.

Fan Time Delay

Ideal For Retrofit

The fan time delay is mounted at the

factory as standard equipment (optional

on duct furnaces).This feature eliminates

an initial blast of cold air by allowing the

unit to fire for a short period of time

before actuating the fan motor. After the

thermostat is satisfied (with burners off),

the fan continues to operate for

Trane unit heaters let you pocket fuel

savings from day one and provide

years of dependable service.

approximately one minute, removing

residual heat from heat exchanger.

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Features and

Benefits

High-Efficiency Propeller

Fan Unit Heaters

High-Efficiency Centrifugal

Fan Unit Heaters

High Efficiency Indoor Duct Furnace

The high efficiency indoor gas duct

furnace complements our current

centrifugal and propeller fan lines.

All high efficiency lines were designed to

achieve fuel savings of up to

25 percent over conventional gravity

vented heaters.

Trane high-efficiency propeller fan unit

heaters achieve annual fuel savings of

20 to 25 percent over conventional

gravity vented heaters.

Each unit features a factory-installed

flue vent fan and sealed flue collector

that controls combustion and excess

air during the on-cycle.

The high-efficiency centrifugal fan unit

heater keeps energy costs down.The

design advances achieve annual fuel

savings of 20 to 25 percent over

conventional gravity vented heaters.

In the past, these conventional gravity

vented heaters lost heated room air

through the draft diverter opening.

Conventional gravity vented heaters lost

heated room air through the draft

diverter opening.The high efficiency line

features an integral flue vent fan and

sealed flue collector for improved

combustion. It reduces air requirements

and wind effects on the system’s

efficiency. Intermittent pilot ignition

reduces pilot gas losses and the flue vent

fan allows for horizontal venting through

side walls.

Heated air no longer escapes through

the draft diverter opening during the

off-cycle. Energy saving intermittent

pilot ignition reduces gas losses.The

pilot only operates when required.

The high-efficiency centrifugal unit

features integral power venting (factory-

installed) and sealed flue collector for

optimum combustion.

It reduces wind effects on the system’s

efficiency. Intermittent pilot ignition

reduces pilot gas losses and the power

drafter allows for horizontal venting

through side walls. It all adds up to

higher efficiencies and lower installation

costs.

Horizontal power venting, smaller

openings and single-walled vent pipe

reduce heat loss. Higher efficiencies

can reduce equipment and material

costs as well as installation time.

DUCT FURNACES ARE APPROVED FOR

BLOW-THRU APPLICATIONS ONLY.

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Features and

Benefits

Propeller Fan Unit Heaters

The Trane gas-fired unit heater is a

complete heat generating and

distributing plant, equipped with

automatic safety controls, all packaged in

a modern, streamlined, space saving,

attractive casing for mounting near the

ceiling. Propeller units are basically zero

static pressure appliances. At no time

should ductwork be used with propeller

units.

The designs are certified by AGA and

CGA as conforming with standards for

safe and efficient performance.

Centrifugal Fan Unit Heaters

Centrifugal fan unit heaters are ideal for

commercial and industrial applications

where a low noise level is desired.Trane

centrifugal fan unit heaters which

operate at .2-inches W.C. are extremely

quiet.

Centrifugal fan gas-fired unit heaters

should be selected for applications

where ductwork or discharge nozzles are

to be used.

Separated Combustion Propeller Fan

Unit Heaters

These units achieve higher seasonal

efficiencies by using outside air for

combustion, overcomes slight negative

pressures near exhaust fans or paint

booths and isolates burner from dust,

Separated Combustion Centrifugal Fan

Unit Heaters

The Trane separated combustion units

are designed for space heating in mildly

hostile environments.These units can be

installed where dusty, dirty, or mildly

corrosive conditions exist or where high

humidity or slightly negative pressure

prevail.

humidity and chemicals.The combustion

process is separate from the

environment where the unit is installed.

A power venting system draws a

controlled quantity of combustion air

from outside the building.The same

system exhausts flue products to the

outside.The burners, pilot and flue

system are enclosed within the unit, thus

the whole combustion process is literally

unaffected by the atmosphere where the

heater is located.

Typical applications are industrial work

areas with wood or textile dust, non-

explosive contaminated environments,

non-chlorine process areas, automotive

and truck garages and greenhouses.

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Features and

Benefits

Tubular Heat Exchanger

Propeller Fan Unit Heaters

TheTrane Company has added a new

unit heater to enhance its broad line of

heating products.TheTrane tubular heat

exchanger is a very durable unit heater

that provides an alternative to the

traditional clam shell style.These are

propeller style units that combine the

latest tubular heat exchanger style with

inshot burner technology to create a very

efficient operating unit.

Separated Combustion

Duct Furnace

Applications include:

Industrial work areas with wood or

textile dust

TheTrane separated combustion duct

furnace is designed to operate efficiently

and reliably, even in environments that

are dusty, dirty or mildly corrosive, or

where high humidity or slightly negative

pressure is present.

Non-explosive contaminated

environments

Non-chlorine process areas

Automotive and truck garages

Greenhouses

Duct Furnaces

Horizontal Blower Assemblies

A duct furnace is normally installed in the

distribution duct of an air conditioning

system to supply warm air for heating.

This definition applies only to an

appliance which depends for air

circulation on a blower not furnished as

part of the furnace.

Trane horizontal blower assemblies have

been specially designed for air handling

systems of high static pressure in

combination withTrane duct furnaces.

They are matched against the proper

furnace size for greatest efficiency of

operation.

Knowledge and experience gained from

thousands of installations over many

years have gone into the design of the

Trane gas-fired duct furnace. No effort

has been spared to make this product

one of the best obtainable.The objective

was to produce an appliance that would

be low in first cost and installation cost,

dependable in performance and

endowed with long life under normal

operating conditions.

DUCT FURNACES ARE APPROVED FOR

BLOW-THRU APPLICATIONS ONLY.

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Application

Considerations

General

natural gas is not available,Trane units

may be ordered directly from the factory

for use on LP (propane) gas.

gas.The resulting concentration of the

acid is governed by the amount of

sulphur in the gas.This concentration

varies from gas to gas and

geographically within the same type

of gas.

Propeller fan unit heaters and centrifugal

fan unit heaters are designed for use in

space heating applications.The units are

typically used in areas with high ceilings,

and are exposed in the space to be

heated. Unit heaters offer low installed

cost, and are able to heat large volume

areas without requiring extensive duct

systems.

Gas heat content varies by fuel type and

location.The standard gross heating

value for natural gas is 1,000 Btu per

cubic foot, and for propane, 2,500 Btu

per cubic foot. Significant variations

selections.To account for variations in

the gross heating value of the fuel, adjust

the total heat input required and select

the unit on the basis of the adjusted load

using the following formula:

Beyond sulfuric acid corrosion there is

the area of chlorinated or halogenated

hydrocarbon vapor corrosion.This type

of corrosion occurs when substances are

mixed with combustion air that will

cause the formation of hydrochloric or

hydrofluoric acid when burned.These

basic substances are found in

degreasers, dry cleaning solvents, glues,

cements, paint removers and aerosol

propellants. Specific chemicals included

in this group are trichloroethylene,

perchloroethylene, carbon tetrachloride,

methylene chloride, methyl chloroform

and refrigerants 11, 12, 21, 22 and 114.

Duct furnaces are designed for use in

ducted applications with a separate air

handling device such as a horizontal

blower assembly. By utilizing a separate

air source, greater application flexibility

in airflow delivery can be obtained.

Multiple duct furnaces can be used with

an air handling unit to provide zone

heating.

Adjusted load = Calculated load x

gross heat value (Btu/cu ft)

Actual gross heat value (Btu/cu ft)

Low Temperature Rise

Trane recommends against the setup of

a unit which will result in a temperature

rise of less than 30°F.With such low

temperature rises, the flue gases passing

through the heat exchanger are cooled

to condensate before reaching the flue

outlet.This condensate is corrosive and

will result in shortened heat exchanger

life.

If sufficient PPM content of these

corrosives is present, none of the

common heat exchanger materials will

hold up.The dilemma becomes whether

to place the gas heating equipment

outside of the area to be conditioned, or

use equipment in the space which does

not burn a fuel such as gas (i.e. electric or

hydronic).

NOTE:When installing duct furnaces in

parallel or in series, minimum clearance

requirements must be considered.This is

required for serviceability of the gas

valve and the high limit. “All duct

furnaces are approved in blow-thru

applications only.”

Air Density

Catalog performance data is based on

elevations up to 2,000 feet above sea

level. Above 2,000 feet the unit’s heating

capacity must be derated four percent

for each 1,000 feet above sea level, and

special orifice selections are required.

Table PAF-1 contains correction factors

that can be applied to the unit’s

Units should not be installed in areas

with corrosive or inflammable

atmospheres. Locations containing

solvents or chlorinated hydrocarbons

will produce corrosive acids when

coming in contact with burner flames.

This reaction will greatly reduce the life

of the heat exchanger and may void the

warranty. For added protection against

heat exchanger corrosion, optional 409

and 321 stainless steel construction is

available. On units using outside air, with

entering air temperature below 40°F,

condensation of flue gas in the heat

exchanger is possible. In these cases,

stainless steel heat exchangers are

recommended.

All duct furnaces are AGA approved

upstream or downstream of the cooling

coil. Recommend optional field installed

drain pan when installed on the

cataloged heating capacity, fan rpm, and

fan bhp to obtain actual values for

elevations above 2,000 feet.

downstream side of the cooling coil.

NOTE: Downstream denotes cooling coil

ahead of the fan section.

Corrosive Atmospheres

Corrosion of heat exchangers and draft

diverters have two basic variables –

moisture (condensation) and sulphur.

These two ingredients form to make

sulfuric acid in the combustion process.

Condensation occurs commonly in

makeup air systems, using large

When used in conjunction with filters,

cooling coils and an air handler, the duct

furnace can become part of a built-up

heating and cooling system.

Careful review of the job application with

respect to use, probable contaminants

within a conditioned space or the

amounts of fresh air, when air

temperatures entering the heat

exchanger drop to 40°F or below.This

reaction can also occur in recirculating

systems where some quantity of outside

air is introduced upstream of the

exchanger.The sulphur will always be

present as an integral component of the

amount of fresh air to be brought in, will

help to make the proper selection of heat

exchanger material.This review will help

to eliminate problems before they begin.

Gas Heating Value

The majority of gas heating units are

installed in applications where natural

gas is readily available. In areas where

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Application

Considerations

Indoor Units

Throw Data

Avoid installing units in areas under

negative pressure.

Avoid running vent pipe through

unheated spaces.When this cannot be

avoided, insulate the pipe to prevent

condensation of moisture on the inside

walls of the pipe.

Indoor gas unit heaters and duct

furnaces are used primarily in

commercial and industrial structures

such as manufacturing areas,

warehouses, garages, stores,

showrooms, lobbies and corridors.

Throw data for units with standard

louvers and for units with optional

discharge nozzles are in the General Data

section, pages 19 and 20. Optional

nozzles are for use on propeller fan unit

heaters, centrifugal fan unit heaters and

duct furnaces.When greater throw

distance is desired, a 45° nozzle is

recommended. For high mounting

heights, a 90° nozzle may be used.When

wide diffusion is needed, aY splitter

nozzle should be considered. A five-way

nozzle can be used for applications

requiring even air distribution over a

large floor area. (Five-way nozzles are

not available on propeller fan unit

heaters.)

Separated combustion units are used

primarily in industrial work areas with

wood or textile dust, non-explosive

contaminated environments, non-

chlorine process areas, automotive and

truck garages and greenhouses.

Where two or more units vent into a

common flue, the cross-sectional area of

the common flue must be equal to the

larger vent connection plus 50 percent of

the area of each additional vent

connection. (Gravity vent units only.)

Do not damper the flue piping. Failure to

open such a damper prior to operating

the unit will result in the spillage of flue

gas into the occupied space, activating

the blocked vent (spill) switch.

Unit Placement

Refer to the applicableTrane Installation,

Operation and Maintenance literature for

specific installation instructions.

Installations must conform with local

building codes or in the absence of local

codes with the National Fuel Gas Code

ANSI Z223.1.

Indoor Units —Venting

Gas fired indoor units require venting to

remove the products of combustion.To

help assure safe, trouble-free operation,

follow the guidelines listed below:

Flue Vent Fans

When selecting a location for an indoor

unit heater, both the size and weight of

the unit, as well as the heating

requirements of the building, should be

considered. Installation of units in

airplane hangars or public garages

should be in accordance with NFPA No.

409 for aircraft hangars, and NFPA No.

88 for garages.

Where chimneys of sufficient height are

impractical, or where the distance from

the heater to the chimney is so great that

sufficient draft cannot be created, a flue

vent fan can be used to vent the

products of combustion.The flue vent

fan is normally started and stopped by

the room thermostat. A centrifugal

switch in the flue vent fan operates the

electric gas valve.

NaturalVenting

Provide a vertical flue of at least four feet.

Use a flue the same size as the flue

opening on the unit.

Provide maximum vertical rise at the

For proper distribution, air should be

directed towards areas of maximum

heat loss.When multiple units are used,

circulation of heated air around the

space perimeter is recommended.

Satisfactory results can also be obtained

where multiple units are located toward

the center of the area, with heated air

being discharged toward the outside

walls.Throw data for standard unit

heaters and unit heaters utilizing

optional discharge nozzles is shown in

the General Data section, pages 19 and

20.

units.

Dimensional data for the flue vent fan is

shown inTable DW-14.

Keep horizontal runs to a minimum and

slope flue upward at least ¼ -inch per

foot. Horizontal runs should not

exceed 75 percent of the vertical

height of the vent pipe, or chim ney,

above the flue pipe connection.

Avoid short turns; 45° elbows are

recommended.

The vent pipe should be at least six

inches from combustible material and

should be properly insulated when

passing through combustible partitions.

Extend flue at least two feet above the

highest point of the roof.

Locations where extreme drafts can

affect burner operation should be

avoided. Strong drafts may cause pilot

outage. Units with intermittent pilot

ignition may be preferable in areas

where drafts are likely.

Tape flue pipe joints with fireproof paper

or material.

Minimum clearances required for

accessibility and safety are listed inTable

GD-1.

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Application

Considerations

PowerVented Units

IRI Requirements

Pitch horizontal pipes downward

¼-inch per foot toward outlet for

condensate drainage. Horizontal

portions of the venting system shall be

supported at maximum intervals of

4 feet to prevent sagging.

Vertical vent pipes should be equipped

with condensate drains.

Units with a factory installed flue vent

fan.

All input sizes require 100 percent

shutoff.This requires that any natural gas

unit, equipped with intermittent pilot

ignition, must employ a “lock out” type

ignition system which will shut off pilot

gas if the pilot fails to light at any time.

This system is required by AGA on LP

gas units as standard equipment.

However, for natural gas units, you need

to specify on the order “Natural Gas, 100

percent shutoff.”

All units must be vented. Power vented

units are designed to use single wallvent

pipe. A BreidertType L, Field Starkap, or

equivalent unit vent cap must be

furnished by the customer.

The venting system for these appliances

shall terminate at least 4 feet below, 4

feet horizontally from, or 1 foot above

any door, window or gravity air inlet into

any building.

Insulate single wall vent pipe exposed

to cold air or running through

unheated areas.

All units require AGA certification or UL

“listed” controls. Our units are AGA

certified and meet this requirement.

Models with inputs of 150,000 to 400,000

Btu require “mechanical exhaust” and

a “safety interlock.” For our units this

means a power vented or drafter

equipped unit. In both instances, if the

flue vent fan (factory or field installed)

does not get up to speed, the unit will

not fire, satisfying the safety interlock

portion.

FM and IRI Requirements

IRI, which stands for Industrial Risk

Insurers, and FM, which stands for

Factory Mutual, are both basically

insurance companies which insure

commercial/industrial firms against a

variety of losses. Both publish

requirements which must be met by

certain equipment operating in the

facilities they are preparing to insure.

Through-the-wall vents for these

appliances shall not terminate over

public walkways or over an area where

condensate or vapor could create a

nuisance or hazard or could be

detrimental to the operation of

regulators, relief valves, or other

equipment.

Listed below is our interpretation of the

requirements of both insurers pertaining

to heating units only to the extent of

features/controls required by IRI and/or

FM.There are a number of additional

requirements which pertain to electrical

service, details of installation, etc., and

we urge you to obtain copies of the

publications pertaining to these details if

you are involved in a job where IRI or FM

adherence has been indicated.The

requirements detailed herein are our

interpretations of the latest publications

in our possession and we must disclaim

any responsibility for errors due to our

interpretation and/or lack of any updated

revision of these standards. Our intent is

to provide you with an understanding of

the application of these standards and

how we believe our indirect-fired gas

heating equipment applies.

The vent pipe diameter must be as

shown under “Recommended Flue Size”

in the specification charts. An adaptor

must be field supplied if required.

Each furnace m ust have an

individual vent pipe and vent

term inal. Vent pipe equivalent length

must not exceed 50 feet. Equivalent

length is the total length of straight

sections, plus 15 feet for each 90°

elbow and 8 feet for each 45°

elbow.

FM Requirements

All units must be AGA certified or UL

listed. Our units are AGA certified.

The high limit control must be in a

circuit, the voltage of which does not

exceed 120 VAC. All of our high limits

would meet this requirement.

The specific requirement for an “IRI or

FM GasTrain,” while it applies to direct

and indirect-fired gas heating equipment

as well as oil-fired, comes into play only

with units having an input in excess of

400,000 Btu.This may be one of the

reasons why the majority of gas heating

equipment manufacturers (indirect-fired)

limit their largest individual furnace to

400,000 Btu.

Maintain 6 inch clearance between vent

pipe and combustible materials. Vent

terminal must be installed with a

minimum clearance of 4 feet from

electric meters, gas meters, regulators,

and relief equipment.

Seal vent pipe joints to prevent leakage.

Use General Electric RTV-108 or Dow

Corning RTV-732 Silicone Sealant or 3M

#425 aluminum foil tape.

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Application

Considerations

Minimum/Maximum

Gas Inlet Pressures

In order to select the proper spring/

orifice combination, we need to know

what the supply pressure is on that

particular job and the input size of the

unit being ordered. More than one unit

can be run from one regulator; however,

we recommend that each unit have its

own regulator.

High Pressure Regulators —

Natural Gas Only

Gas valves are suitable to a maximum

inlet pressure of 0.5 psi (14 inches water

column) on natural gas. If the main gas

supply pressure is greater than

14 inches W.C., a step-down pressure

regulator must be field installed ahead of

the gas valve. Minimum inlet pressure for

natural gas units is 5 inches W.C.

TheTrane indoor gas heating products

contained in this catalog, are designed

to operate at a pressure of 3.5-inch W.C.

(Water Column) when firing on natural

gas. This is the “manifold” pressure or

that which is present at the burner

orifices. All five and six-function valves

provide a built-in pressure regulator

which is capable of reducing “supply”

pressures from a maximum of 14-inch

W.C. (½ psi) down to

We require that the “job” supply

pressure be included on all jobs

requiring high pressure regulators along

with the unit size.The table that follows

displays the regulators range as it

pertains to inlet pressure and MBh. N/A

requires the customer to contact a local

utility or an industrial supply house.

For LP (propane) gas, the minimum inlet

pressure is 11.0 inches W.C.

and the maximum inlet pressure is

14.0 inches W.C.

3.5-inch W.C. on the leaving side of the

valve.The valve typically “drops” about

1½-inch so the minimum supply

pressure is 5-inch W.C.

These devices are not available from

Trane for LP gas. LP accessories must be

secured from the gas supplier/ supply

house.

Whenever supply pressures exceed

14-inch W.C., a high pressure regulator

should be selected.We supply a

Rockwell regulator which is fitted with

pressure springs and capacity orificing

to meet the requirements of each

specific job.

Table AC-1 — Orifice Chart: Rockwell 043-182 Regulator

Inlet

Capacity in MBH for Natural Gas

Spring

Pressure

25-200

3/8”

1/4”

1/8”

225-300

N/A

3/8”

1/4”

1/8”

350-500

N/A

3/8”

1/4”

1/8”

600

N/A

700

N/A

3/8”

1/4”

1/8”

800

N/A

3/8”

5/16”

1/4”

3/16”

N/A

1/8”

Required

1 psi

Blue (only)

N/A

3/8”

1/4”

1/8”

Blue or Green

100

125

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Application

Considerations

Mounting Detail

(Hanging Hardware Supplied by Others)

Steel Construction

Wood Construction

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Application

(Venting

Considerations Unit Heaters)

Venting unit heaters and duct furnaces

used to be as simple as remembering

that warm air rises.With the introduction

of new venting equipment and safety

controls, things have become a little

more technical.Today’s contractor has to

know a lot more about proper venting to

get the job done within code at a

reasonable price.

When a factory owner replaces an old

unit heater, having an efficiency of

65 percent, he expects to benefit from

the higher efficiency of the new unit.This

efficiency brings a system change with it

in the form of lower flue temperatures,

closer to the dewpoint.

If the old stack isn’t corrosion resistant

deterioration may be sudden.The mild

acid that forms when vent gas

Sharing Flues with Other Appliances

Traditionally unit heaters get installed in

pairs, sharing a common flue between

two heaters. When a unit heater must

share a flue with another appliance a few

cautions are appropriate.

Always be certain that the flue can

handle the combined operation of all

appliances connected to it. Never

assume that one appliance will operate

at a time.When connecting into the stack

or breaching always connect the device

with the largest input first.This limits the

potential for flue gases to escape out

other outlets and warms the entire

chimney. Avoid installing appliances

directly across from each other when

entering the stack.This might force the

draft from one appliance to vent out the

opposing draft diverter.

For starters ANSI now categorizes vented

appliances into four categories. Category

I includes non-condensing appliances

with negative vent pressure, like the

traditional atmospheric unit heater.

condenses will gradually eat away at the

metal. Eventually the stack will rust

through leaking fumes and

condensation.

To avoid condensation be certain to use

stacks of the right size. Oversize stacks

draw slower, allowing more time for

condensation. For naturally vented units

use B vent.This insulated vent pipe

contains vent heat, reducing the chances

of condensation.This is particularly

important for vents running through

unheated areas.

Venting Categories

Non-Condensing

Condensing

Negative

Vent Pressure

Positive

Vent Pressure

III

Category II groups condensing

appliances with negative vent pressure.

When piping to a stack NEVER reduce

the appliance vent size. Use smooth

transitions and long bends. Abrupt

transitions and tight elbows create

resistance and turbulence that can limit

vent capacity. Never connect power

vented devices to common flues.

Mechanically vented appliances must

have dedicated vents to the point of

termination.

Category III appliances are non-

condensing and operate with a positive

vent pressure, like the traditional power

vented unit heater. Category IV covers

condensing appliances with positive vent

pressure.

In addition to problems from

condensation, contractors have had to

become aware of new mandated

controls. In addition to a high limit

switch, the primary power circuit for

naturally vented atmospheric gas unit

heaters now contains a “spill” switch.

This switch, a manually resettable

thermo disk type device, senses a

blocked flue. Sensitive to a rise in

temperature in the draft diverter, the spill

switch cuts off power to the gas valve

stopping combustion.

Tie smaller units into larger.Avoid cross

connections that feed backwards into

another flue.

Natural Draft Unit Heaters

The gravity vented unit heater still has

the greatest acceptance, but the new

high efficiency of gravity unit heaters add

some new twists to venting. As efficiency

rises more heat gets extracted from the

flue gas.This heat had been driving the

vent system in natural draft systems.

With lower flue gas temperatures,

velocities in the chimney decrease. In

turn this lower velocity can cause flue

gases to reach the point at which they

will condense.

Spill Switch

Problems arise in buildings that have

experienced back drafting from negative

pressure for years. As new units replace

old, the back drafting causes the units to

shutdown, uncovering a makeup air

problem that has gone uncorrected for

years.

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Application

(Venting

Considerations Unit Heaters)

PowerVented Unit Heaters

PowerVented Unit Heater

Mechanically vented appliances have

enjoyed increasing acceptance in

American facilities. Power vented unit

heaters allow installation without the

need to penetrate expensive roofing

materials.They also offer more flexibility

in placement of individual unit heaters.

Mechanical venting occurs when a

power blower provides a positive air

flow to exhaust vent gas.The blower

may be mounted at the unit heater or at

the point of termination. With a factory

installed power venter, a pressure switch

detects the flow of vent gas before the

gas valve is allowed to open. With third

party drafters usually a centrifugal switch

monitors the operation of the blower

motor.When properly installed, the

switch senses motor rotation and allows

the gas valve to operate. Interlocking the

blower to the gas valve provides some

control over the combustion process.

Using a factory unit with a pressure

sensitive switch ensures that control.

With all their advantages power venters

bring some requirements as well. Each

manufacturer determines the maximum

length of pipe and fittings that his system

can use for safe operation. Remember to

count the fittings and allow for their

higher resistance to flow.The total length

of run includes not only the piping length

but the resistance of all the fittings

including the termination cap.

Many contractors have become

accustomed to using B vent with natural

draft units. Used with power vented

appliances indoors, B vent is

unacceptable. B vent does not allow

positive pressure in the vent piping to be

sealed from the heated space. Proper

installation uses 24-gauge, single wall

vent pipe and each joint sealed with

temperature resistant sealant or tape.

Vent Termination Locations

(minimum distance)

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Application

(Venting

Considerations Unit Heaters)

Contractors must also be aware of the

conditions at the point of termination.

The National Fuel Gas Code NFPA 54/

ANSI Z223.1-1992 mandates that vent

system should terminate at least 4 feet

below, 4 feet horizontally or 1 foot above

any window, door, or gravity inlet to a

building.Termination with a vent cap

approved by the manufacturer should

occur well above the snow line.

When positioning the intake and exhaust

vents on separated combustion

Heat

equipment, the intake and outlet must

mount on the same outside surface.This

ensures that any wind effects balance

out. Remember to keep the vents at least

18” apart to avoid drawing exhaust air

into the intake air.

Fumes

WithTrane’s separated combustion unit

heaters intake air and exhaust air run

through standard 24-gauge galvanized

pipe. Remember that separated

combustion unit heaters still have high

vent temperatures. Use of PVC, CPVC

and other plastic vent materials are

inappropriate and hazardous. Check the

manufacturer’s instructions before

piping any appliance.

Beyond satisfying the codes, vents

should be positioned away from shrubs

and plants that might be affected by

unseasonable warming by the exhaust.

Sidewall vents release a considerable

amount of water vapor that may

condense on cold siding, adversely

affecting painted surfaces. Placing these

vents in locations that get natural air

circulation from prevailing winds may

help to reduce these negative effects.

Humidity

The vent gases of power vented and

separated combustion unit heaters may

condense on a cold start-up or when

vent piping runs through unheated

areas.To protect the heater always pitch

both intake and exhaust piping toward

the outside of the building. Remember

also that no power vented equipment

can share a common flue with any other

appliance. Should a flue become blocked

one appliance could vent into the

occupied space.

Separated Combustion Venting

Another form of mechanical venting

includes those unit heaters that use a

powered exhaust also to pull in outside

air. Most often found on condensing

furnaces, separated combustion does

not use room air for combustion. Instead

these unit heaters use a second run of

pipe to supply fresh outdoor air.

Approved vent caps should be used on

both the intake and exhaust

The separated combustion approach

offers several advantages. First, it does

not use warm indoor air to fire the unit

heater.This saves energy by avoiding

drawing unheated make-up air into the

living space. Second, the unit heater has

an unlimited source of air for

terminations. For greater convenience

Trane offers a concentric vent adapter

that allows venting through a single

perforation through the building wall or

roof.

combustion. In many of the new super

insulated buildings appliances can be

starved for combustion air. In

contaminated atmospheres the use of

separated combustion unit heaters

assures that the heat exchanger sees

only non-corrosive air.

Opportunities Using Trane Gas Products

Whatever venting configuration your job

requires,Trane offers a unit heater to

meet your needs.Trane offers the

reliability of traditional standing pilot

systems, always vented by natural draft.

We offer spark ignition natural draft and

power vented unit heaters and the new

separated combustion unit heaters.

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Selection

Procedure

Determine the total heating load

requirements in accordance with

methods recommended by the ASHRAE

Handbook of Fundamentals or other

acceptable means.

Selection Example — A natural gas duct

furnace that can provide 300 MBh

heating output is required. An airflow of

5,000 cfm is being provided to the duct

furnace.

Knowing the mounting height of the

unit, throw can be determined from the

performance data table. If the throw is

not adequate, a discharge nozzle can be

used to obtain additional throw.

Propeller Fan Unit Heater

Select the unit as follows:

Selection Example —An LP (Propane)

gas centrifugal fan unit heater that can

provide 150 MBh heating output is

required. An airflow of 2,000 cfm is

desired.The unit will be mounted 12 feet

above the floor and a 65-foot throw is

required.

From the performance data tables, select

the unit whose heating output meets or

exceeds the heating load requirement.

Airflow (cfm) and temperature rise can

be read directly from the performance

data tables.

From Table PD-8, select a GDND-040 with

a 400.0 MBh input and 320.0 MBh

heating output.

From Chart PD-1, temperature rise at

5,000 cfm is 58°F and pressure drop is

0.16 inches.

Select the unit as follows:

Horizontal Blower Assembly

Knowing the mounting height of the

unit, throw can be determined from the

performance data table. If the throw is

not adequate, consider using a larger

propeller fan unit heater or a centrifugal

fan unit heater with an optional

discharge nozzle for greater throw.

From Table PD-7, select a GCPD-020 with

a 200.0 MBh input and 160.0 MBh

heating output. An airflow of 2,000 cfm

is within the allowable range, and

temperature rise is calculated as follows:

From the performance data tables, select

the blower assembly that provides the

needed airflow at the required static

pressure, and determine the required

motor size and fan speed.

MBh x 1,000

1.085 x cfm

∆T =

Selection Example —A natural gas

propeller fan unit heater that can provide

75 MBh heating output is required.The

unit will be mounted 10 feet above the

floor and a 40-foot throw is required.

If a blower assembly is to be used with a

duct furnace, refer to the dimensional

data table to determine which blower to

use with the given duct furnace.The duct

furnace pressure drop must be added to

the pressure drop of the duct system

before entering the blower assembly

performance data tables. Enter the

performance data table at the required

airflow and at the total external static

pressure to determine the motor size

and fan speed.

160 x 1,000

1.085 x 2,000

∆T =

= 74.0°F

From Table GD-2, throw at a 12-foot

mounting height is 61 feet. As a 61-foot

throw is not adequate, a 60 degree

nozzle can be selected (from Table

GD-4) which provides a throw of

76 feet.

Select the unit as follows:

From Table PD-5, select a GPND-010 with

a 100.0 MBh input and 80.0 MBh heating

output, 1,480 cfm and a 50°F

temperature rise.

Duct Furnace

From the performance data tables, select

the unit whose heating output meets or

exceeds the heating load requirement.

From Table GD-2, throw at a mounting

height of 10 feet is 54 feet.

Selection Example — A GDND-040 duct

furnace is to be used with a horizontal

blower assembly. An airflow of 5,000

cfm is required.The pressure drop of the

duct system is 0.54 inches, and the

pressure drop of the duct furnace is 0.16

inches.

Centrifugal Fan Unit Heater

Given the airflow to be supplied to the

duct furnace, temperature rise and

pressure drop through the duct furnace

can be read directly from the

performance data charts. If the air

temperature rise is below 30°F, some

supply air must be bypassed around the

duct furnace. If the air temperature rise is

over 80°F, additional supply air must be

delivered to the duct furnace.

From the performance data tables, select

the unit whose heating output meets or

exceeds the heating load requirement.

Select the unit as follows:

From Table DW-13, select a HBAC-45 for

use with the GDND-040 duct furnace.

From Table PD-9, an HBAC-45 at 5,000

cfm and 0.7 inches static pressure (0.54

inch ductwork + 0.16-inch furnace)

requires a 1½ hp motor with a fan speed

of 720 rpm.

Airflow (cfm) ranges are listed for each

unit size in the performance data tables.

Knowing either the desired airflow or

temperature rise, the other can be

calculated using the following formulas:

Output x 1,000

cfm =

1.085 x ∆T

Output x 1,000

1.085 x cfm

∆T =

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Model

Num ber

Description

Indoor Gas Heating Units

003

5,6,7 8

10 11 12 13 14 15

Digit 1 — Gas Heating Equipment

Digit 2 — Product Type

Digit 9 — Gas Control Option

Digit 14 — Rooftop Fan Section

A = Single-Stage, Standing Pilot

0 = None (Indoor Unit and Rooftop Duct

Furnace)

S = Special

D = Single-Stage, Intermittent Pilot Ignition

E =Two-Stage, Intermittent Pilot Ignition

F = Hydraulic Modulating, Intermittent Pilot

Ignition (60-100°F)

G = Hydraulic Modulating with Bypass,

Intermittent Pilot Ignition (60-100°F)

H = Electronic Modulating with Room

T-Stat, Intermittent Pilot Ignition

P = Propeller Fan Unit Heater

B = High Efficiency Centrifugal Fan

Unit Heater

C = Centrifugal Fan Unit Heater

D = Indoor Duct Furnace

L = High Efficiency Indoor Duct Furnace

H = High Efficiency Propeller Fan Unit Heater

A = Separated Combustion Propeller Fan

Unit Heater

K = Separated Combustion Centrifugal Fan

Unit Heater

Digit 15 — Miscellaneous Options —

All Units

0 = None

A = #409 Stainless Steel Burners³

B = Orifices For Elevation Above 2000 Feet

(Specify Elevation)

= Electronic Modulating with Duct-Stat,

Intermittent Pilot Ignition

S = Special

K = Single-Stage, Hot Surface Pilot Ignition

L = Electronic Modulating with External

4-20 mA Input

N = Electronic Modulating with External

0-10 VDC Input

P = Hydraulic Modulating, Intermittent Pilot

Ignition (75-150°F)

R = Hydraulic Modulating with Bypass,

Intermittent Pilot Ignition (75-150°F)

S = Special

Propeller Fan Unit Heater

M = Separated Combustion Indoor Duct

Furnace

T =Tubular Heat Exchanger - PropellerType

S = Special

(Std., Hi-Effic. and Separated Combustion)

C = #409 Stainless Steel Draft Diverter

D = Summer-Winter Switch

E =Vertical Louvers

=Totally Enclosed Motor

Digit 3 — Fuel

7 = OSHA Fan Guard

N = Natural Gas

P = LP Gas (Propane)

S = Special

Centrifugal Fan Unit Heater

Digit 10 — Design Sequence

(Std., Hi-Effic. and Separated Combustion)

F = Sixth Design

Digit 4 — Development Sequence

C = #409 Stainless Steel Draft Diverter

D = Summer-Winter Switch

E =Vertical Louvers

D = Fourth Generation

Digit 11 — Heat Exchanger Material

1 = Aluminized Steel

2 = #409 Stainless Steel²

3 = #321 Stainless Steel³

S = Special

H = Duct Discharge Flange

Digits 5-7 — Input Capacity

=Totally Enclosed Motor

Single Furnace

003 = 30 MBh

004 = 45 MBh

006 = 60 MBh

007 = 75 MBh

009 = 90 MBh

010 = 100 MBh

012 = 125 MBh

015 = 150 MBh

017 = 175 MBh

020 = 200 MBh

R03 = 30 MBh

R04 = 45 MBh

R06 = 60 MBh

R07 = 75 MBh

R09 = 90 MBh

022 = 225 MBh

025 = 250 MBh

030 = 300 MBh

035 = 350 MBh

040 = 400 MBh

Duct Furnace (Indoor) (Std. or Hi-Effic.)

C = #409 Stainless Steel Draft Diverter

D = Summer-Winter Switch

F = Horizontal Louvers

G = Horizontal and Vertical Louvers

K = Side Access Burner Drawer (Left Hand)*

L = FanTime Delay Control

M = Side Access Burner Drawer (Right

Hand)*

Digit 12 — Rooftop Arrangements

0 = None (Indoor Unit)

S = Special

Digit 13 — Rooftop Heating Unit

Motor Selection

0 = None (Indoor Unit and Rooftop Duct

Furnace

S = Special

*Residential -Tubular Only

Separated Combustion Indoor Duct Furnace

C = #409 Stainless Steel Draft Diverter

D = Summer-Winter Switch

F = Horizontal Louvers

Digit 8 — Main Power Supply

A = 115/60/1

B = 230/60/1

C = 208/60/3

D = 230/60/3

E = 460/60/3

F = 575/60/3

S = Special

G = Horizontal and Vertical Louvers

Tubular Heat Exchanger, PropellerType

=Totally Enclosed Motor

7 = OSHA Fan Guard

Notes:

1. All units are AGA approved. For CGA approved units,

contact Clarksville Technical Support.

2. Available on the tubular sizes 100-400 only.

3. Not available for tubular.

*The left or right hand side of the side access burner

drawer, options K & M, is determ ined by facing the air

outlet side of the duct furnace.

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Model

Num ber

Description

(Horizontal Blower

Assem bly)

Horizontal Blower Assembly

HBA

A A C

1 2 3

5 6

9 10 11

Digit 1-3 — Horizontal Blower Assembly

Digit 8 — Main Power Supply

A = 115/60/1

B = 230/60/1

C = 208/60/3

D = 230/60/3

E = 460/60/3

S = Special

Digit 4 — Development Sequence

C =Third Generation

Digit 9 — Motor Horsepower

Digit 5-6 — Blower Size

A = ^1/3hp

B = ½ hp

C = ¾ hp

D = 1 hp

E = 1½ hp

F = 2 hp

S = Special

15= Nominal 1500 cfm

20= Nominal 2000 cfm

30= Nominal 3000 cfm

45= Nominal 4500 cfm

Digit 10 — Design Sequence

Digit 7 —Transition Size

(Specifies Duct Furnace Size)

0 = None

C = Third Design

Digit 11 — Miscellaneous Options

A = 100 MBh

B = 125 MBh

C = 150 MBh

D = 175 MBh

E = 200 MBh

F = 225 MBh

G = 250 MBh

H = 300 MBh

J = 350 MBh

K = 400 MBh

0 = None

1 = Insulation

3 = Totally Enclosed Motor

S = Special

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General

Data

Table GD-1 — Minimum Clearances

Duct

Furnace

18”

Propeller & Centrifugal

Fan U.H.

18”

Sides

Top

Bottom

Flue

6”

21”*

6”

21”

6”

Standard Unit Heater Applications

*21” clearance is required for bottom access to

burners and pilot. If a side pull-out burner drawer is

ordered (duct furnace only), bottom clearance can be

reduced to six inches. Side clearance, however, m ust

be increased such that it is adequate for burner drawer

rem oval. Reference Tables DW-10 and DW-11.

Table GD-2 – Standard Unit Heater Approximate Distance ofThrow at Nominal Airflow

Distance From

Floor to Bottom

of Unit “H”

ft./(m)

Unit Size – Input MBh – (kW)

(8.8)

(13.2)

(17.6)

(22.0)

100

(29.3)

125

150

175

200

225

(65.9)

250

(73.2)

300

(87.8)

350

(102.5)

400

(117.1)

(36.6)

(43.9)

(51.2)

(58.6)

(2.4)

(10.1)

(12.2)

(18.3)

(19.8)

(21.3)

(22.9)

(24.4)

(25.9)

(27.4)

105

(32.0)

110

(33.5)

120

(36.6)

(3.0)

(8.5)

(10.7)

(16.5)

(17.1)

(18.3)

(19.5)

(20.7)

(21.9)

(23.8)

(27.4)

(29.0)

100

(30.5)

(3.7)

(13.4)

(14.0)

(14.9)

(17.4)

(18.6)

(19.8)

(20.7)

(24.4)

(25.6)

(27.4)

(4.6)

(6.1)

(13.7)

(14.9)

(15.8)

(14.0)

(17.1)

(15.2)

(18.3)

(16.5)

(21.3)

(19.2)

(22.6)

(20.1)

(24.4)

(21.3)

Table GD-3 – 30 Degree Nozzle – Approximate Distance ofThrow at NominalAirflow

Distance From

Floor to Bottom

of Unit “H”

Unit Size – Input MBh – (kW)

175 200 225 250

(51.2) (58.6) (65.9) (73.2)

100

(29.3) (36.6)

125

150

(43.9)

300

350

400

ft./(m)

(87.8) (102.5)

(117.1)

(2.4)

65 70

(19.8) (21.3)

57 60

(17.4) (18.3)

50 54

(15.2) (16.5)

80 85 90 95

(27.4) (29.0) (35.1) (36.6)

78 86 99 105

(23.8) (26.2) (30.2) (32.0)

70 77 88 94

(21.3) (23.5) (26.8) (28.7)

59 64 74 79

(18.0) (19.5) (22.6) (24.1)

115 120

125

(38.1)

(22.9) (24.4) (25.9)

(3.0)

(21.9)

110

(33.5)

30° Nozzle

(19.5) (20.7)

(3.7)

57 60

100

(30.5)

(17.4) (18.3) (19.5)

48 50 53

(14.6) (15.2) (16.2)

NR 44 47

(13.4) (14.3)

(4.6)

(25.6)

(13.7)

(6.1)

(22.9)

(16.2)

(17.7) (20.1)

(21.6)

NR = Not Recom m ended

Notes:

1. All throw data figures are approxim ate.

2. NR = not recom m ended at these m ounting heights.

3. Nozzles are not available on units below size 100 MBh.

4. Nozzles are available for High Efficiency units. Specify High Efficiency when ordering due to difference in nozzle

configuration.

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General

Data

60° Nozzle

Table GD-4 – 60 Degree Nozzle – Approximate Distance ofThrow at Nominal Airflow

Distance From

Floor to Bottom

of Unit “H”

Unit Size – Input MBh – (kW)

175 200 225 250

(43.9) (51.2) (58.6) (65.9) (73.2)

100

(29.3) (36.6)

125

150

300

350

400

ft./(m)

(87.8) (102.5)

(117.1)

(2.4)

75 80

(22.9) (24.4)

65 70

(19.8) (21.3)

60 64

(18.3) (19.8)

50 54

(15.2) (16.5)

(25.9)

100 110

(30.5) (33.5) (38.1) (39.6)

88 95 109 115

(26.8) (29.0) (33.2) (35.1)

80 84 100 103

(24.4) (25.6) (30.5) (31.4)

68 71 85 88

(20.7) (21.6) (25.9) (26.8)

61 65 77 81

(18.6) (19.8) (23.5) (24.7)

125 130

138

(42.1)

(27.4) (29.0)

(3.0)

79 83

120

(36.6)

(22.9) (24.1) (25.3)

68 72 76

(20.7) (21.9) (23.2)

56 61 65

(17.1) (18.6) (19.8)

52 55 59

(15.8) (16.8) (18.0)

(3.7)

108

(32.9)

(4.6)

(28.7)

(6.1)

(25.9)

90° Nozzle

(14.9)

Table GD-5 – 90 Degree Nozzles – Approximate Floor Coverage at Nominal Airflow

Distance From Floor to Bottom of Unit “H” – ft./(m)

Unit

Size

10'

15'

20'

25'

30'

(3.0)

(4.6)

(6.1)

(7.6)

(9.1)

100

125

150

175

200

225

250

300

350

400

30 x 25

(9.1 x 7.6)

35 x 30

(10.7 x 9.1)

40 x 35

(12.2 x 10.7)

45 x 40

(13.7 x 12.2)

50 x 40

(15.2 x 12.2)

40 x 35

(12.2 x 10.7)

55 x 40

(16.8 x 12.2)

48 x 35

(14.6 x 10.7)

60 x 45

(18.3 x 13.7)

56 x 40

(17.1 x 12.2)

50 x 35

(15.2 x 10.7)

70 x 45

(21.3 x 13.7)

65 x 40

(19.8 x 12.2)

60 x 35

(18.3 x 10.7)

55 x 35

(16.8 x 10.7)

80 x 50

(24.4 x 15.2)

70 x 45

(21.3 x 13.7)

65 x 40

(19.8 x 12.2)

60 x 35

(18.3 x 10.7)

65 x 40

(19.8 x 12.2)

100 x 50

(30.5 x 15.2)

80 x 45

(24.4 x 13.7)

75 x 40

(22.9 x 12.2)

“Y” Splitter

Table GD-6 – “Y” Splitters – Approximate Distance ofThrow at Nominal Airflow

Distance From

Floor to Bottom

of Unit “H”

Unit Size – Input MBh – (kW)

175 200 225 250

(43.9) (51.2) (58.6) (65.9) (73.2)

100

(29.3) (36.6)

125

150

300

350

400

ft./(m)

(87.8) (102.5)

(117.1)

(2.4)

47 51

(14.3) (15.5)

41 44

(12.5) (13.4)

37 40

(11.3) (12.2)

60 65 70 72 80

(18.3) (19.8) (21.3) (21.9) (24.4) (29.0) (30.5)

63 69 82 87

(19.2) (21.0) (25.0) (26.5)

57 63 75 79

(17.4) (19.2) (22.9) (24.1)

95 100

103

(31.4)

(3.0)

(15.8)

(28.0)

(17.1) (18.6)

(3.7)

51 55

(25.0)

(14.3) (15.5) (16.8)

NR = Not Recom m ended

Notes:

1. All throw data figures are approxim ate.

2. NR = not recom m ended at these m ounting heights.

3. Nozzles are not available on units below size 100 MBh.

4. Nozzles are available for High Efficiency units. Specify High Efficiency when ordering due to difference in nozzle

configuration.

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Perform ance

Data

Table PD-1 – High Efficiency Propeller Fan Gas Unit Heater Performance Data

Model

GHND/ GHND/ GHND/ GHND/ GHND/ GHND/ GHND/ GHND/

GHND/ GHND/ GHND/ GHND/ GHND/ GHND/

GHPD

003

GHPD GHPD

GHPD GHPD GHPD GHPD

GHPD

017

GHPD GHPD GHPD

GHPD

030

GHPD

035

GHPD

040

Unit Size

004

006

007

010

012

015

020

022

025

Input

MBh

8.8

13.2

17.6

22.0

100

29.3

125

36.6

150

43.9

175

51.2

200

58.6

225

65.9

250

73.2

300

87.8

350

102.5

400

117.1

(kW)

Output

MBh

7.0

80%

10.5

80%

14.1

80%

17.6

80%

23.4

80%

100

29.3

80%

120

35.1

80%

140

41.0

80%

160

46.9

80%

120

52.7

80%

200

58.6

80%

240

70.3

80%

280

82.0

80%

320

93.7

80%

(kW)

Thermal Efficiency

Free Air Delivery

cfm

750

0.354

800

0.378

1,050

0.496

1,100

0.519

1,480

0.699

1,650

0.779

2,200

1.038

2,530

1.194

2,640

1.246

2,700

1.274

3,100 4,400

5,000

2.360

5,300

2.502

(cu. m/s)

1.463

2.077

AirTemperature Rise

°F

Outlet Velocity

fpm

(m/s)

680

3.45

4.5

720

3.66

4.5

610

3.10

4.5

640

3.25

4.5

775

3.94

5.8

910

4.62

1,045

5.31

7.2

1,070

5.44

8.2

1,010

5.13

8.2

950

4.83

8.2

980

4.98

8.2

1,100

5.59

11.2

1,150

5.84

13.2

1,050

5.33

13.2

Full Load Amps at 115V

Motor Data:

1/30

0.025

1,050

1.3

1/30

0.025

1,050

1.3

1/30

0.025

1,050

1.3

1/30

0.025

1,050

1.3

1/20

0.037

1,050

2.6

1/10

0.075

1,050

2.8

1/4

0.186

PSC

1,140

4.0

1/3

0.249

PSC

1,140

4.5

1/3

0.249

PSC

1,140

4.5

1/3

0.249

PSC

1,140

4.5

1/3 (2)1/4

(2)1/3

(kW)

0.249 (2) 0.186 (2) 0.249 (2) 0.249

Type

PSC

1,140

4.5

PSC

1,140

8.0

PSC

1,140

9.0

PSC

1,140

9.0

rpm

Amps @ 115V

Notes:

1. Ratings are shown for elevations up to 2,000 feet above sea level. Above 2,000 feet, input m ust be derated 4 percent for each 1,000 feet above sea level.

2. Standard 115/60/1 open drip-proof m otor.

3. Therm al efficiency for the 003 and 004 units are based on stack in horizontal position.

4. The flue vent fan m otors used on all high efficiency units are 115/60/1; 1/20 hp and 1.5 am ps.

Table PD-2 – High Efficiency Centrifugal Fan Unit Heater Performance Data

Model

GBND/

GBPD

010

GBND/

GBPD

012

GBND/

GBPD

015

GBND/

GBPD

017

GBND/

GBPD

020

GBND/

GBPD

022

GBND/

GBPD

025

GBND/

GBPD

030

GBND/

GBPD

035

GBPD

040

Unit Size

Input

MBh

100

29.3

125

36.6

150

43.9

175

51.2

200

58.6

225

65.9

250

73.2

300

87.8

350

102.5

400

117.1

(kW)

Output

MBh

23.4

80%

100

29.3

80%

120

35.1

80%

140

41.0

80%

160

46.9

80%

180

52.7

80%

200

58.6

80%

240

70.3

80%

280

82.0

80%

320

93.7

80%

(kW)

Thermal Efficiency

Free Air Delivery

cfm

(cu. m/s)

1,200

0.566

1,575

0.743

1,975

0.932

2,300

1.086

2,400

1.133

2,600

1.227

2,850

1.345

3,950

1.864

4,600

2.171

4,800

2.266

AirTemperature Rise

°F

°C

Outlet Velocity

fpm

(m/s)

880

4.47

8.3

950

4.83

9.8

1,030

5.23

10.6

1,045

5.31

10.6

965

4.90

15.2

935

4.72

15.2

930

4.72

15.2

1,080

5.49

15.2

1,090

5.54

18.6

1,000

5.08

18.6

Full Load Amps at 115V

Motor Data :

0.19

SHP

1,725

5.1

1/3

0.25

SHP

1,725

6.6

0.37

SHP

1,725

7.4

0.37

SHP

1,725

7.4

0.56

SHP

1,725

12.0

0.56

SHP

1,725

12.0

0.56

SHP

1,725

12.0

0.56

SHP

1,725

12.0

0.75

1,725

15.4

0.75

1,725

15.4

(kW)

Type

rpm

Amps @ 115V

Notes:

1. Ratings are shown for elevations up to 2,000 feet above sea level. Above 2,000 feet, input m ust be derated 4 percent for each 1,000 feet above sea level.

2. Standard m otors are 115V 60 Hz, single phase open drip-proof.

3. The flue vent fan m otors used on all high efficiency units are 115/60/1; 1/20 hp and 1.5 am ps. All other voltages will require an additional transform er.

4. SPH= Split Phase; CS = Capacitor Start

5. 0.2” m axim um external static pressure.

Table PAF-1 — Altitude Correction Factors

Correction Factors For High Altitude Installations

Altitude Above Sea Level (FT)

Gas Heating Capacity

Fan rpm

2,000

0.92

1.04

3,000

0.88

1.06

4,000

0.84

1.09

5,000

0.80

1.12

6,000

0.76

1.15

7,000

0.72

1.19

1.00

Fan bhp

1.07

1.12

1.18

1.25

1.33

1.41

Notes:

1. For high altitude installations above 2,000’, reduce ratings 4% for each 1,000’ above sea level.

2. Multiply standard unit by correction factor to get actual input and required rpm and hp.

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Data

Table PD-3 – Separated Combustion Propeller Fan Gas Unit Heater Performance Data

Model

GAND/

GAPD

GAND/

GAPD

GAND/

GAPD

GAND/

GAPD

GAND/

GAPD

GAND/

GAPD

GAND/

GAPD

GAND/

GAPD

GAND/

GAPD

GAND/

GAPD

Unit Size

010

012

015

017

020

022

025

030

035

040

Input

MBh

100

29.3

125

36.6

150

43.9

175

51.2

200

58.6

225

65.9

250

73.2

300

87.8

350

102.5

400

117.1

(kW)

Output

MBh

23.4

80%

100

29.3

80%

120

35.1

80%

140

41.0

80%

160

46.9

80%

180

52.7

80%

200

58.6

80%

240

70.3

80%

280

82.0

80%

320

93.7

80%

(kW)

Thermal Efficiency

Free Air Delivery

cfm

1480

0.699

1650

0.779

2200

1.038

2530

1.194

2640

1.246

2700

1.274

3100

1.463

4400

2.077

5000

2.360

5300

2.502

(cu. m/s)

AirTemperature Rise

°F

°C

Outlet Velocity

fpm

(m/s)

775

3.9

5.8

910

4.6

6.0

1045

5.3

7.2

1070

5.4

7.8

1000

5.1

7.8

950

4.8

7.8

980

5.0

8.8

1100

5.6

11.2

1150

5.8

12.2

1050

5.3

12.2

Full Load Amps at 115V

Motor Data:

1/20

0.037

1,050

2.6

1/10

0.075

1,050

2.8

1/4

0.186

PSC

1,140

4.0

1/3

0.249

PSC

1,140

4.5

1/3

0.249

PSC

1,140

4.5

1/3

0.249

PSC

1,140

4.5

1/2

0.373

PSC

1,140

5.5

(2) 1/4

(2) 0.186

PSC

1,140

8.0

(2) 1/3

(2) 0.249

PSC

1,140

9.0

(2) 1/3

(2) 0.249

PSC

1,140

9.0

(kW)

Type

rpm

Amps @ 115V

Notes:

1. Ratings are shown for elevations up to 2,000 feet above sea level. Above 2,000 feet, input m ust be derated 4 percent for each 1,000 feet above sea level.

2. Standard m otor is 115/60/1 open drip-proof.

3. SP = Shaded Pole; PSC = Perm anent Split Capacitor.

Table PD-4 – Separated Combustion Centrifugal Fan Gas Unit Heater Performance Data

Model

GKND/

GKPD

GKND/

GKPD

GKND/

GKPD

GKND/

GKPD

GKND/

GKPD

GKND/

GKPD

GKND/

GKPD

GKND/

GKPD

GKND/

GKPD

GKND/

GKPD

Unit Size

010

012

015

017

020

022

025

030

035

040

Input

MBh

100

29.3

125

36.6

150

43.9

175

51.2

200

58.6

225

65.9

250

73.2

300

87.8

350

102.5

400

117.1

(kW)

Output

MBh

23.4

80%

100

29.3

80%

120

35.1

80%

140

41.0

80%

160

46.9

80%

180

52.7

80%

200

58.6

80%

240

70.3

80%

280

82.0

80%

320

93.7

80%

(kW)

Thermal Efficiency

Free Air Delivery

cfm

1,200

0.566

1,575

0.743

1,975

0.932

2,300

1.086

2,400

1.133

2,600

1.227

2,850

1.345

3.950

1.864

4,600

2.171

4,800

2.266

(cu. m/s)

AirTemperature Rise

°F

°C

Outlet Velocity

fpm

(m/s)

880

4.47

8.3

950

4.83

9.8

1030

5.23

10.6

1045

5.31

10.6

965

4.90

15.2

935

4.75

15.2

930

4.72

15.2

1080

5.49

15.2

1090

5.54

18.6

1000

5.08

18.6

Full Load Amps at 115V

Motor Data:

0.19

SPH

1725

5.1

1/3

0.25

SPH

1725

6.6

0.37

SPH

1725

7.4

0.37

SPH

1725

7.4

0.56

SPH

1725

12.0

0.56

SPH

1725

12.0

0.56

SPH

1725

12.0

0.56

SPH

1725

12.0

0.75

1725

15.4

0.75

1725

15.4

(kW)

Type

rpm

Amps @ 115V

Notes:

1. Ratings are shown for elevations up to 2,000 feet above sea level. Above 2,000 feet, input m ust be derated 4 percent for each 1,000 feet above sea level.

2. Standard m otor is 115/60/1 open drip-proof.

3. SPH = Split Phase; CS = Capacitor Start.

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Data

Table PD-5 – Propeller Fan Gas Unit Heater Performance Data

Model

GPND/ GPND/ GPND/ GPND/ GPND/ GPND/ GPND/ GPND/

GPND/ GPND/ GPND/ GPND/

GPND/

GPPD

GPND/

GPPD

003

GPPD

004

GPPD

006

GPPD GPPD

GPPD

012

GPPD

015

GPPD

017

GPPD

020

GPPD

022

GPPD

025

GPPD

030

Unit Size

007

010

035

040

Input

MBh

8.8

13.2

17.6

22.0

100

29.3

125

36.6

150

43.9

175

51.2

200

58.6

225

65.9

250

73.2

300

87.8

350

102.5

400

117.1

(kW)

Output

MBh

24.3

7.1

81%

36.5

10.7

81%

48.6

14.2

81%

60.8

17.8

81%

23.4

80%

100

29.3

80%

120

35.1

80%

140

41.0

80%

160

46.9

80%

180

52.7

80%

200

58.6

80%

240

70.3

80%

280

82.0

80%

320

93.7

80%

(kW)

Thermal Efficiency

Free Air Delivery

cfm

700

0.330

800

0.378

1050

0.496

1100

0.519

1480

0.699

1650

0.779

2200

1.038

2530

1.194

2640

1.246

2700

1.274

3100

1.463

4400

2.077

5000

2.360

5300

2.502

(cu. m/s)

AirTemperature Rise

°F

°C

Outlet Velocity

fpm

(m/s)

700

3.6

2.1

750

3.8

2.1

640

3.3

2.1

672

3.4

2.1

950

4.8

3.4

900

4.6

3.6

1045

5.3

4.8

1070

5.4

5.8

1000

5.1

5.8

950

4.8

5.8

980

5.0

5.8

1100

5.6

8.8

1150

5.8

10.8

1050

5.3

10.8

Full Load Amps at 115V

Motor Data:

1/30

0.025

1,050

1.3

1/30

0.025

1,050

1.3

1/30

0.025

1,050

1.3

1/30

0.025

1,050

1.3

1/20

0.037

1,050

2.6

1/10

0.075

1,050

2.8

1/4

0.186

PSC

1,140

4.0

1/3

0.249

PSC

1,140

4.5

1/3

0.249

PSC

1,140

4.5

1/3

0.249

PSC

1,140

4.5

1/3 (2) 1/4

(2) 1/3

(kW)

0.249 (2) 0.186 (2) 0.249 (2) 0.249

Type

PSC

1,140

4.5

PSC

1,140

8.0

PSC

1,140

9.0

PSC

1,140

9.0

rpm

Amps @ 115V

Notes:

1. Ratings are shown for elevations up to 2,000 feet above sea level. Above 2,000 feet, input m ust be derated 4 percent for each 1,000 feet above sea level.

2. Standard m otor is 115/60/1 open drip-proof.

3. SP = Shaded Pole; PSC = Perm anent Split Capacitor

4. Unit am ps are based on standing pilot units.

Table PD-6 –Tubular Heat Exchanger Performance Data

Model

GTND/ GTND/ GTND/ GTND/ GTND/ GTND/ GTND/ GTND/

GTND/ GTND/ GTND/ GTND/

GTND/

GTPD

GTND/

GTPD

003

GTPD

004

GTPD

006

GTPD GTPD

GTPD

010

GTPD

012

GTPD

015

GTPD

017

GTPD

020

GTPD

025

GTPD

030

Unit Size

007

009

035

040

Input

MBh

8.8

13.2

17.6

22.0

26.4

100

29.3

125

36.6

150

43.9

175

51.2

200

58.6

250

73.2

300

87.8

350

102.5

400

117.1

(kW)

Output

MBh

24.3

7.1

36.5

10.7

48.6

14.2

60.8

17.8

72.9

21.4

81.0

23.7

101.3

29.6

121.5

35.6

141.8

41.5

162.0

47.5

202.5

59.3

243.0

71.2

283.5

83.0

324.0

95.0

(kW)

Thermal Efficiency

Free Air Delivery

cfm

500

0.236

750

0.355

1,000

0.473

1,250 1,500

1,600

0.756

2,200

1.039

2,400

1.133

2,850

1.346

3,200

1.511

3,450 5,000

5,600

2.644

5,800

2.738

(cu m/s)

0.591

0.710

1.629

2.361

AirTemperature Rise

°F

°C

4.9

5.6

6.6

8.0

7.8

8.3

12.5

Full Load Amps at 120V

Motor Data

1/20

0.37

1,650

1.9

1/20

0.37

1,650

1.9

1/20

0.37

1,050

2.6

1/20

0.37

1,050

2.6

1/20

0.37

1,050

2.6

1/10

0.75

1,050

2.8

1/4

0.19

PSC

1,140

4.0

1/4

0.19

PSC

1,140

4.0

1/3

0.25

PSC

1,140

4.5

1/3

0.25

PSC

1,140

4.5

1/3

0.25

PSC

1,140

4.5

1/4

0.19

PSC

1,140

8.0

1/3

0.25

PSC

1,140

9.0

1/3

0.25

PSC

1,140

9.0

(kW)

Type

rpm

Amps at 115V

Notes:

1. Ratings are shown for elevations up to 2,000 feet above sea level. Above 2,000 feet, input m ust be derated 4 percent for each 1,000 feet above sea level.

2. CS = Capacitor Start; SPH = Split Capacitor

3. Standard m otors are 115/60/1 open drip-proof.

4. 0.2 m axim um external static pressure.

5. Unit am ps are based on hot surface pilot ignition.

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Data

Table PD-7 – Centrifugal Fan Gas Unit Heater 80%Thermal Efficiency Performance Data

Model

GCND/

GCPD

GCND/

GCPD

GCND/

GCPD

GCND/

GCPD

GCND/

GCPD

GCND/

GCPD

GCND/

GCPD

GCND/

GCPD

GCND/

GCPD

GCND/

GCPD

Unit Size

010

012

015

017

020

022

025

030

035

040

Input

MBh

100

29.3

125

36.6

150

43.9

175

51.2

200

58.6

225

65.9

250

73.2

300

87.8

350

102.5

400

117.1

(kW)

Output

Btu

23.4

80%

100

29.3

80%

120

35.1

80%

140

41.0

80%

160

46.9

80%

180

52.7

80%

200

58.6

80%

240

70.3

80%

280

82.0

80%

320

93.7

80%

(kW)

Thermal Efficiency

Free Air Delivery

cfm

1,200

0.566

1,575

0.743

1,975

0.932

2,300

1.086

2,400

1.133

2,600

1.227

2,850

1.345

3,950

1.864

4,600

2.171

4,800

2.266

(cu. m/s)

AirTemperature Rise

°F

°C

Outlet Velocity

fpm

(m/s)

880

4.47

5.9

950

4.83

7.4

1030

5.23

8.2

1045

5.31

8.2

965

4.90

12.8

935

4.75

12.8

930

4.72

12.8

1080

5.49

12.8

1090

5.54

16.2

1000

5.08

16.2

Full Load Amps at 115V

Motor Data:

1/4

0.19

SPH

1725

5.1

1/30

0.25

SPH

1725

6.6

1/20

0.37

SPH

1725

7.4

1/20

0.37

SPH

1725

7.4

3/4

0.56

SPH

1725

12.0

3/4

0.56

SPH

1725

12.0

3/4

0.56

SPH

1725

12.0

3/4

0.56

SPH

1725

12.0

0.75

1725

15.4

0.75

1725

15.4

(kW)

Type

rpm

Amps @ 115V

Notes:

1. Ratings are shown for elevations up to 2,000 feet above sea level. Above 2,000 feet, input m ust be derated 4 percent for each 1,000 feet above sea level.

2. CS = Capacitor Start; SPH = Split Capacitor

3. Standard m otors are 115/60/1 open drip-proof.

4. Unit am ps are based on standing pilot units.

5. 0.2” m axim um external static pressure.

Table PD-8 – Indoor Gas Duct Furnace Performance Data – Standard or High Efficiency

Models

GDND/GDPD/

Input

Temp.

P.D.

Temp.

P.D.

GLND/GLPD

Unit

MAX

MBh

(kW)

100

MIN

MBh

(kW)

14.6

62.5

18.3

22.0

87.5

25.6

100

Output

MBh

(Kw)

MIN.

cfm

Rise

°F

In. of

H2O

(kPa)

0.12

0.03

0.13

0.03

0.15

0.04

0.14

0.03

0.14

0.03

0.14

0.03

0.14

0.03

0.13

0.03

0.13

0.03

0.14

0.03

MAX.

cfm

Rise

°F

In. of

H2O

(Pascals)

0.85

0.21

0.85

0.21

0.85

0.21

0.85

0.21

0.85

0.21

0.85

0.21

0.85

0.21

0.87

0.22

0.87

0.22

0.90

0.22

Size

(cu. m/s)

929

(°C)

(cu.m/s)

2469

1.165

3086

1.457

3704

1.748

4321

2.040

4938

2.331

5556

2.622

6173

2.914

7407

(°C)

010

29.3

125

23.4

100

0.438

1157

012

015

017

020

022

025

030

035

040

36.6

150

29.3

120

0.546

1389

0.656

1620

0.765

1852

0.874

2083

0.983

2315

1.093

2778

1.311

3241

1.530

3704

1.748

43.9

175

35.1

140

51.2

200

41.0

160

58.6

225

29.3

112.5

32.9

125

46.9

180

65.9

250

52.7

200

58.6

240

73.2

300

36.6

150

87.8

43.9

175

70.3

280

3.496

8642

4.079

9877

4.662

350

102.5

400

51.2

200

58.6

82.0

320

117.1

93.7

Note:

Ratings are shown for elevations up to 2,000 feet above sea level. Above 2,000 feet input m ust be derated four percent for each 1,000 feet above sea level.

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Data

Table PD-9 – Horizontal Blower Assembly Performance Data

External Static Pressure

Water

In.

0.2

0.3

0.4

0.5

0.6

0.15

0.7

0.17

0.8

0.9

Kpa

0.05

0.07

0.10

0.12

0.20

0.22

Nominal Blower cfm

rpm

525

600

650

700

rpm

650

680

710

760

rpm

680

715

750

800

550

560

590

610

625

650

560

590

600

615

640

660

700

725

510

550

560

565

575

600

615

hp rpm

rpm hp

rpm

Models

cfm

Size

cu.m/s

1,250

0.590

1,500

0.708

1,750

0.826

2,000

0.944

1/3

760

790

805

850

630

635

640

650

670

690

630

635

645

665

685

710

735

775

780

840

— Not Applicable —

0.25

1/3

0.25

1/3

HBAC-15

1,500

10”

810

850

890

0.37

860

890

925

0.37

895

940

980

0.37

970

990

1,010

0.25

0.37

1/3

0.56

0.25

0.37

0.25

0.37

0.56

0.37

0.56

1/3

1,500 425

0.708

500

0.25

1/3

1,750

0.826

2,000

0.944

2,250

1.062

2,500

1.180

2,750

1.298

1,750

0.826

2,000

0.944

2,250

1.062

2,500

1.180

2,750

1.298

3,000

1.416

3,250

1.534

3,500

1.652

2,750

1.298

3,000

1.416

3,500

1.652

4,000

1.888

4,500

2.124

5,000

2.360

5,500

2.596

6,000

2.832

6,500

3.068

7,000

3.304

7,500

3.540

8,000

3.776

450

515

530

560

590

615

680

690

700

710

730

0.37

725

740

750

760

780

0.37

785

790

795

800

0.25

0.37

1/3

475

515

540

575

0.37

810

815

820

830

0.56

0.25

0.37

HBAC-20

2,000

12”

0.37

0.56

0.37

0.56

0.37

0.56

0.75

1/3

450

510

675

680

720

735

0.25

0.37

1/3

475

500

525

560

610

630

675

525

550

580

605

640

675

700

785

790

805

815

830

0.37

810

815

825

845

860

0.56

0.25

0.37

685

700

715

750

800

740

750

775

790

0.37

0.56

HBAC-30

3,000

12”

0.37

0.56

0.37

0.56

0.75

0.37

0.56

0.75

0.56

0.75

840 1½

875 1½

1.12

890 1½

1.12

0.56

0.75

1.12

400

450

0.56

425

430

450

475

500

530

575

610

720

800

860

475

480

500

525

540

575

615

660

790

860

930

600

610

615

620

630

650

690

750

860

930

0.56

650

660

670

680

690

0.56

700

710

715

730

740

750

0.56

0.75

0.56

790

0.75

0.56

0.75

800 1½

1.12

0.56

0.75

720 1½

1.12

700 1½

1.12

760 1½

1.12

730 1½

1.12

810 1½

1.12

820 1½

1.12

0.56

0.75

1½

1.12

1½

1.12

0.75

HBAC-45

4,500

12”

700 1½

1.12

715 1½

1.12

800

910

960

0.75

1½

1.12

1½

1.12

1½

1.12

0.75

1½

1.12

0.75

660 1½

1.12

760

840

940

1.49

800

890

960

1.49

830

930

1.49

710

830

900

960

1.49

2.24

1.49

2.24

1.49

2.24

*External Static Pressure in inches of water. Add pressure drop of indoor duct furnace, if used, to pressure drop of ductwork, to determ ine total external static pressure.

HBAC units are for use with specific duct furnace sizes. Reference Table DW-13.

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Data

Table PD-10 – Separated Combustion Indoor Gas Duct Furnace

Input

Output

(Max)

MBh

(kW)

100

(Min)

MBh

(kW)

Min.

cfm

Temp. Rise

°F

P.D.

In. of H20

(kPa)

0.10

Max.

cfm

Temp. Rise

°F

P.D.

in. of H20

(Pascals)

2.03

Models

GMND/GMPD

010

MBh

(kW)

(cu. m/s)

822

(°C)

(cu.m/s)

3700

(°C)

(29.3)

125

(14.6)

(23.4)

100

(0.388)

1028

(50)

(0.02)

0.09

(1.746)

4625

(11)

(0.51)

1.92

012

015

017

020

022

025

030

035

040

62.5

(18.3)

(36.6)

150

(29.3)

120

(0.485)

1233

(50)

(0.02)

0.09

(2.183)

5550

(11)

(0.48)

1.81

(43.9)

175

(22.0)

87.5

(35.1)

140

(0.582)

1439

(50)

(0.02)

0.09

(2.620)

6475

(11)

(0.45)

1.86

(51.2)

200

(25.6)

100

(41.0)

160

(0.679)

1645

(50)

(0.02)

0.09

(3.056)

7401

(11)

(0.46)

1.90

(58.6)

225

(29.3)

112.5

(32.9)

125

(46.9)

180

(0.776)

1850

(50)

(0.02)

0.09

(3.493)

8326

(11)

(0.47)

1.93

(65.9)

250

(52.7)

200

(0.873)

2056

(50)

(0.02)

0.09

(3.930)

9251

(11)

(0.48)

1.96

(73.2)

300

(36.6)

150

(58.6)

240

(0.970)

2467

(50)

(0.02)

0.10

(4.366)

11101

(11)

(0.49)

2.00

(87.8)

350

(43.9)

175

(70.3)

280

(1.164)

2878

(50)

(0.02)

0.10

(5.240)

12951

(6.113)

14801

(6.986)

(11)

(0.50)

2.02

(102.5)

400

(51.2)

200

(82.0)

320

(1.358)

3289

(50)

(0.02)

0.10

(11)

(0.50)

2.05

(117.1)

(58.6)

(93.7)

(1.552)

(50)

(0.02)

(11)

(0.51)

Note:

Ratings are shown for elevations up to 2,000 feet (610m ) above sea level. Above 2,000 feet (610m ) input m ust be derated 4% for each 1,000 feet (305m ) above sea level. When units

are installed in Canada, any reference to derations at altitudes in excess of 2,000 feet (610m ) are to be ignored. At altitudes of 2,000 to 4,500 (610 to 1372m ), the units m ust be

orificed to 90% of the norm al altitude rating, and be so m arked in accordance with the CGA certification.

Chart PD-1 – Performance Data Curves for all Duct Furnaces

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Controls

Gas Controls

Single-Stage Control

Hydraulic Modulating Control with

Bypass

Pilot Control

Indoor gas heating units are provided

with an automatic single-stage gas valve

as standard.This valve is an on/off type

control, typically activated by a low

voltage single-stage thermostat.

Standing pilot is standard on indoor duct

furnaces, propeller fan unit heaters and

centrifugal fan unit heaters. High

efficiency units (centrifugal, propeller and

duct furnaces) ship as standard with

intermittent pilot ignition.The separated

combustion propeller and centrifugal fan

unit heaters also ship as standard with

intermittent pilot ignition.

An additional electric valve is provided in

parallel with the hydraulic modulating

valve.The electric valve bypasses the gas

flow around the hydraulic modulating

valve, allowing full fire and overriding

the modulating valve’s sensing bulb

control.The electric valve is activated by

a low voltage single-stage thermostat.

(Thermostat not included)

Two-Stage Control

Indoor units with optional two-stage

control are provided with a two-stage

gas valve capable of firing at 100 percent

and 50 percent of rated input. Ignition is

at low fire (50 percent of the unit’s rated

input) and the unit is typically controlled

by a low voltage two-stage thermostat.

Intermittent pilot ignition contains a

solid-state ignition control system that

ignites the pilot by spark for each cycle of

operation.When the pilot flame is

proven, the main burner valve opens to

allow gas flow to the burners. Both the

pilot and burners are extinguished

during the off cycle.

(N/A on 30-75 MBh units)

Electronic Modulating Control

This optional control is available for use

with natural gas units only. Units with

electronic modulating control are

Hydraulic Modulating Control

Units with optional hydraulic modulating

control are provided with a modulating

gas valve capable of firing from 50

percent to 100 percent of rated input.

Ignition is at low fire (50 percent of

input).The hydraulic modulating valve is

controlled by a sensing bulb located in

the discharge airstream which

modulates the gas input from 50 percent

to 100 percent of rated input.The unit is

also provided with an automatic electric

valve in series with the hydraulic

modulating valve, which typically cycles

the unit in response to a low voltage

single-stage thermostat. Units that do

not utilize a thermostat will operate as a

standing pilot unit.The ignitor will light

the pilot.The pilot will remain on until

power is disconnected from the units.

provided with an electronic modulating

valve capable of firing from 100 percent

to 50 percent of rated input. Ignition is at

full fire (100 percent of unit’s rated input).

The electronic modulating valve is

controlled by a room thermostat or a

duct thermostat with remote setpoint

adjustment which modulates the gas

input from 100 percent to 50 percent of

rated input. An optional override room

thermostat is available for use with the

duct thermostat.The override room

thermostat allows full fire and overrides

the duct thermostat when the room

temperature falls below the override

room thermostat’s setpoint. (N/A on 30-

75 MBh units)

Intermittent pilot ignition is ideal for

limited access installations where

manual lighting of the pilot may be

difficult. Nuisance pilot outages on units

mounted in areas subject to occasional

severe drafts can also be eliminated.

Energy savings will be realized using this

system as the pilot is extinguished

during the off cycle. Intermittent pilot

ignition should be considered on units

that have long shutoff periods.

(Re qu ire d o n s h ip m e n t s t o Ca lifo rn ia .)

Fan Control

The supply fan motor is activated directly

through the fan time delay relay on

indoor units provided with single-phase

motors up to one hp. Contactors or

starters are required on all other units

with single-phase motors 1½-hp and

above, and with all three-phase motors.

On indoor units, contactors and starters,

where required, are provided. (See table

below.)

Electronic Modulating — 4-20 mA/0-10

VDC Input

Provides modulated heat output. Ignition

is at full fire (100 percent input), and

modulates the gas input from 100

percent to 40 percent rated input.

The modulating gas valve shall operate

in response to a 4-20 mA or a 0-10 VDC

input from an external DDC control.

Voltage

115/60/1

230/60/1

208/60/3

230/60/3

460/60/3

Notes:

½ hp

¾hp

1hp

1½hp

2hp

3hp

N/A

5hp

N/A

7½hp

N/A

10hp

N/A

1. Contactors not required or provided on units with single phase m otors up to one hp.

2. Provided with contactor with line voltage holding coil on all 1¹/2 hp and above single-phase m otors and on all 208

230V three-phase m otors up to five hp.

3. Provided with contactor with low (24V) holding coil on all 460V three-phase m otors up to five hp.

4. Provided with size 2 starter on all units with 7¹/2 and 10 hp 208/230V three-phase m otors.

5. Provided with size 1 starter on all units with 7¹/2 and 10 hp 460V three-phase m otors.

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Controls

Electronic Modulating Room Thermostat

(Included with Gas Control)

Thermostats Single-Stage Room Thermostat

(Order No. 350-0015-01)

Single-Stage Duct Thermostat

(Order No. 350-0015-07)

• Low Voltage (24V)

• 60 to 85 F Range

• Low Voltage (24V)

• 55 to 95 F Range

• Low Voltage (24V)

• 55 to 175 F Range

• 5’ Capillary

• 5 ^13/16” W 3 ” H 1 ^7/8” D

• 2 ^7/8” W x 4 ” H x 1 ^1/8” D

• Natural Gas Only

• 2” W x 5 ^5/8” H x 2 ^7/16” D

Electronic Modulating Duct Thermostat

(Included with Gas Control)

Single-Stage Room Thermostat with

Summer/Winter Switch

Two-Stage Duct Thermostat

Order No. 350-0015-08)

• Low Voltage (24V)

• 55 to 90 F Range

(Order No. 350-0015-02)

• Sensor: 10-inch Probe

• Low Voltage (24V)

• 55 to 175 F Range

• 5’ Capillary

• Low Voltage (24V)

• 55 to 95 F Range

• Fan Auto-On Switch

• RemoteTemperature Selector:

4 ” W 4 ¼” H 1 ^7/8” D

• 2” W x 5 ^5/8” H x 2 ^7/16” D

• 3 ” W x 4 ^1/5” H x 1 ^3/8” D

• DuctThermostat:

4 ” W 4 ” H 1 ^5/8” D

• Natural Gas Only

Universal Guard (Order No. 350-0015-06)

Two-Stage Room Thermostat

(Order No. 350-0015-03)

• Clear Plastic

• Ring Base

Electronic Modulating Override Room

Thermostat for use with Duct Thermostats

(Order No. 350-0015-05)

• Tumbler Lock andTwo Keys

• Low Voltage (24V)

• 42 to 88 F Range

• Fan Auto-On Switch

• Cover: 6 ^7/8” W x 5 ^5/8” H x 3“D

• Base: 6 ^9/16” W x 5 ” H x ^3/8” D

• Line Voltage (115V)

• 50 to 90 F Range

• System Off-Auto Switch

• 2 ^7/8” W 4 ^9/16” H 1 ” D

• 5 ^5/8” W x 3 ” H x 2 ^1/8” D

• Natural Gas Only

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Electric

Power

Sequence of Operation

Typical wiring diagrams and sequence of

operations for indoor units with

intermittent pilot ignition are shown

below. On duct furnaces, the fan motor

and associated controls shown in the

wiring diagrams are not integral to the

unit. It is essential, however, that the air

handling system be interlocked with the

duct furnace to prevent duct furnace

operation without airflow.

The fan time delay relay (optional on

duct furnaces) allows the heat exchanger

to come up to operating temperature. At

this time, the fan time delay relay closes

and activates the fan motor.*

The unit continues to fire until the

thermostat is satisfied and no longer

calls for heat.

The main and pilot valves close.

Single-Stage Control

The fan time delay relay remains closed,

keeping the fan operating to dissipate

residual heat from the heat exchanger. At

this time, the fan time delay relay opens

and deactivates the fan motor.

With power applied to the unit:

The thermostat calls for heat.

The pilot valve opens.

NOTE:This unit is equipped with a

blocked vent shutoff (spill) switch. If the

venting system becomes blocked or

there is continuous spillage, the vent

shutoff switch will shut off the unit

The ignitor sparks continuously to ignite

the pilot.

The sensor proves pilot ignition and

shuts off the ignitor.

heater.

*See Fan Controls on page 27.

With the pilot lit, the main gas valve

opens.

Main burners are lit at 100 percent of

unit’s rated input.

• Caution - Disconnect power before

servicing.

• Unit must be grounded.

• Use copper conductors only.

• If any of the original wire as supplied

with the appliance must be replaced, it

must be replaced with wiring material

having a temperature rating of at least

125°C.

• Refer to installation instructions for

venting, gas piping and start-up

procedures.

• - - - Indicates Field Wiring.

• ___ Indicates Factory Wiring.

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Electric

Power

Two-Stage Control

The main gas valve opens to full fire.The

main burners are now at full fire.The unit

continues at full fire until the second

stage of the thermostat is satisfied and

no longer calls for heat.

With power applied to the unit:

The first stage of the thermostat calls for

heat.

The pilot valve opens.

The main valve closes to low fire.The

main burners are now at low fire.The

unit continues at low fire until the first

stage of the thermostat is satisfied and

no longer calls for heat.

The ignitor sparks continuously to ignite

the pilot.

The sensor proves pilot ignition and

shuts off the ignitor.

The main and pilot valves close.

The fan time delay relay remains closed,

keeping the fan operating to dissipate

residual heat from the heat exchanger. At

this time, the fan time delay relay opens

and deactivates the fan motor.

With the pilot lit, the main gas valve

opens to low fire.

Main burners are lit at 50 percent of

unit’s rated input.

The fan time delay relay (optional on

duct furnaces) allows the heat exchanger

to come up to operating temperature. At

this time, the fan time delay relay closes

and activates the fan motor*.

NOTE:This unit is equipped with a

blocked vent shutoff (spill) switch. If the

venting system becomes blocked or

there is continuous spillage, the vent

shutoff switch will shut off the unit

heater.

*See Fan Controls on page 27.

If additional heat is required, the second

stage of the thermostat calls for heat.

• Caution - Disconnect power before

servicing.

• Unit must be grounded.

• Use copper conductors only.

• If any of the original wire as supplied

with the appliance must be replaced, it

must be replaced with wiring material

having a temperature rating of at least

125°C.

• Hi-limit and blocked vent (spill) wires

minimum 200°C.

• Refer to installation instructions for

venting, gas piping and start-up

procedures.

• - - - Indicates Field Wiring.

• ___ Indicates FactoryWiring.

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Electric

Power

Hydraulic Modulating Control

The mechanical modulating valve opens

allowing gas flow to the main burners.

Main burners are lit at 50 percent of the

unit’s rated input.The mechanical

modulating valve modulates between 50

percent and 100 percent of firing rate

depending on the temperature rise

required.

With power applied to the unit:

The thermostat calls for heat. NOTE: If a

thermostat is not supplied, steps 2

through 5 will be constant as long as

power is applied to the unit.

The pilot valve opens.

The ignitor sparks continuously to ignite

the pilot.

The unit continues to fire until the

hydraulic sensing bulb is satisfied and

no longer calls for heat.

The sensor proves pilot ignition and

shuts off the ignitor.

With the pilot lit, the main electric gas

valve opens. At this time, the fan time

delay (optional on duct furnaces) is

energized.The fan time delay relay

closes and activates the fan motor.

The mechanical modulating valve closes

which shuts off the main gas supply to

the burners.

The room thermostat is satisfied and no

longer calls for heat.The main and pilot

valves closes. At this time the fan time

delay relay opens and deactivates the

fan motor.

NOTE:The unit firing is controlled by the

hydraulic sensing bulb on the

mechanical valve.The mechanically

operated valve (not illustrated) is in

series with the single-stage electrically

operated valve.

NOTE:This unit is equipped with a

blocked vent shutoff (spill) switch. If the

venting system becomes blocked or

there is continuous spillage, the vent

shutoff switch will shut off the unit

heater.

The hydraulic sensing bulb, on the

mechanical modulating valve, calls for

heat.

• Caution - Disconnect power before

servicing.

• Unit must be grounded.

• Use copper conductors only.

• If any of the original wire as supplied

with the appliance must be replaced, it

must be replaced with wiring material

having a temperature rating of at least

125°C.

• Hi-limit and blocked vent (spill) wires

minimum 200°C.

• Refer to installation instructions for

venting, gas piping and start-up

procedures.

• - - - Indicates Field Wiring.

• ___ Indicates Factory Wiring.

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Electric

Power

valve is closed.The unit is again

controlled by the hydraulic sensing bulb

on the mechanical valve.

Sequence of Operation

Hydraulic Modulating Control

With Bypass

The hydraulic sensing bulb on the

mechanical valve calls for heat.

With power applied to the unit:

The thermostat calls for heat. NOTE: If a

thermostat is not supplied, steps 2

through 5 will be constant as long as

power is applied to the unit.

The pilot valve opens.

The ignitor sparks continuously to ignite

the pilot.

The mechanical modulating valve opens

allowing gas flow to the main burners.

Main burners are lit at 50 percent of the

unit’s rated input.The mechanical

modulating valve modulates between 50

percent and 100 percent of firing rate,

depending on the temperature rise

required.

The unit continues to fire until the

hydraulic sensing bulb is satisfied and

no longer calls for heat.

The sensor proves pilot ignition and

shuts off the ignitor.

With the pilot lit, the main electric gas

valve opens. At this time, the fan time

delay (optional on duct furnaces) is

energized.The fan time delay relay

closes and activates the fan motor.

The mechanical modulating valve closes

shutting off the main gas supply to the

burners.

The room thermostat is satisfied and no

longer calls for heat.The main and pilot

valves closes. At this time the fan time

delay relay opens and deactivates the

fan motor.

NOTE:The unit firing is controlled by the

hydraulic sensing bulb on the

mechanical valve.The mechanically

operated valve (not illustrated) is in

series with the single-stage electrically

operated valve.

The unit is equipped with a bypass

manifold containing a single-stage

electric valve which is in parallel with the

hydraulic modulating gas valve.The

bypass is activated by a thermostat and

overrides the hydraulic control.The

override thermostat should be a remote

room thermostat. If the temperature falls

below the override thermostat’s setpoint

the thermostat opens the bypass valve,

and the unit operates at full fire.The unit

will continue at full fire until the override

thermostat is satisfied and no longer

calls for heat, at which point the bypass

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Electric

Power

Sequence of Operation

Hydraulic Modulating ControlWith Bypass

LINE IN 115V/1/60

BLOWER

MOTOR

FAN TIME DELAY

DISCONNECT

BLACK

DRAFTOR

HTR

SUMMER/WINTER SWITCH

DRAFTOR WIRING FOR

POWER VENTED UNITS

LINE TO

24V XFORMER

50 VA

VOLTS

FAN TIME DELAY

FURNACE ONE HIGH LIMIT

DRAFTOR

END SW

58600 IGNITOR

MV SOL.

PV SOL.

MV/PV

GND

24V (GND)

BLKQ

VENT

DRAFTOR ONE

24V (HOT)

SPARK

IGN

BYPASS SOL.

OVERRIDE STAT

BY1

THERMOSTAT

OR DUCTSTAT

W/B

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Electric

Power

Sequence of Operation

Electronic Modulating Control

(with duct thermostat)

When the thermostat is satisfied, the

main and pilot valves close.

The fan time delay relay (optional on

duct furnaces) remains closed keeping

the fan motor operating to dissipate

residual heat from the heat exchanger. At

this time, the fan time delay relay opens

and deactivates the fan motor.

If optional room override thermostat is

ordered…when setpoint is reached, it

will cause the unit to go to full-fire,

overriding both the duct sensor and the

remote setpoint adjustment.

With power applied to the unit:

The thermostat calls for heat.

The pilot valve opens.

The ignitor sparks continuously to ignite

the pilot.

The sensor proves pilot ignition and

shuts off the ignitor.

With the pilot lit, the gas valve opens.

Main burners are lit at 100 percent of

**NOTE: Sensor and selector wires to

amplifier must not be run close to, or in

conduit with, power or ignition wires.

unit’s rated input.

The fan time delay relay (optional on

duct furnaces) allows the heat exchanger

to come up to operating temperature. At

this time, the fan time delay relay closes

and activates the fan motor.

The unit is controlled by the duct

thermostat which modulates the unit

from 100 to 50 percent of unit’s rated

input. An amplifier receives a small

electrical signal from the thermostat and

converts this into a working voltage.This

working voltage determines the position

of the modulating valve. With no voltage

applied to the valve, the valve will be full

open and full fire will occur. As

increasing voltage is applied to the valve,

the valve will modulate closed. At

approximately 12V dc, the valve will

be at its minimum low fire position. If the

voltage continues to increase, indicating

a further reduction in the unit’s firing is

required, the increased voltage closes a

relay which closes the automatic gas

valve. As temperature drops, the voltage

also drops causing the relay to re-open

the valve.The unit will continue to cycle

in this manner until either an increase in

the unit’s firing rate is required or the

thermostat is satisfied and no longer

calls for heat.

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Electric

Power

Sequence of Operation

Electronic Modulating Control

(with duct thermostat)

LINE IN 115V/1/60

BLOWER

MOTOR

FAN TIME DELAY

DISCONNECT

BLACK

DRAFTOR

HTR

SUMMER/WINTER SWITCH

DRAFTOR WIRING FOR

POWER VENTED UNITS

LINE

24V XFORMER

50 VA

VOLTS

FAN TIME DELAY

FURNACE ONE HIGH LIMIT

DRAFTOR

END SW

58600 IGNITOR

MV SOL.

PV SOL.

MV/PV

GND

24V (GND)

BLKD.

VENT

DRAFTOR ONE

24V (HOT)

SPARK

IGN

MAXITROL

W/ DUCT SENSING

TS121 TD121

t˚

ONE

USE

HR VALVE

PER

A1010 FOR

SINGLE FUNACE

A1011 FOR

FURNACE

SECTION

MULTIPLE FURNACE

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Electric

Power

Sequence of Operation

Electronic Modulating Control

(with room thermostat)

The unit is controlled by the electronic

thermostat which modulates the unit

from 100 to 50 percent of unit’s rated

input. An amplifier receives a small

electrical signal from the thermostat and

converts this into a working voltage.This

working voltage determines the position

of the modulating valve. With no voltage

applied to the valve, the valve will be full

open and full fire will occur. As

With power applied to the unit:

The thermostat calls for heat.

The pilot valve opens.

The ignitor sparks continuously to ignite

the pilot.

increasing voltage is applied to the valve,

the valve will modulate closed. At

approximately 12V dc, the valve will

be at its minimum low fire position. If the

voltage continues to increase, indicating

a further reduction in the unit’s firing is

required, the increased voltage closes a

relay which closes the automatic gas

valve. As temperature drops, the voltage

also drops causing the relay to re-open

the valve.The unit will continue to cycle

in this manner until either an increase in

the unit’s firing rate is required or the

thermostat is satisfied and no longer

calls for heat.

The sensor proves pilot ignition and

shuts off the ignitor.

With the pilot lit, the gas valve opens.

Main burners are lit at 100 percent of

unit’s rated input.

The fan time delay relay (optional on

duct furnaces) allows the heat exchanger

to come up to operating temperature. At

this time, the fan time delay relay closes

and activates the fan motor.

When the room thermostat is satisfied,

the main and pilot valves close.

The fan time delay relay (optional on

duct furnaces) remains closed keeping

the fan motor operating to dissipate

residual heat from the heat exchanger. At

this time, the fan time delay relay opens

and deactivates the fan motor.

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Electric

Power

Sequence of Operation

Electronic Modulating Control

(with room thermostat)

LINE IN 115V/1/60

BLOWER

MOTOR

FAN TIME DELAY

DISCONNECT

SUMMER/WINTER SWITCH

BLACK

DRAFTOR

MTR

115V TO

24V XFORMER

50 VA

VOLTS

FAN TIME DEALY

FURNACE ONE HIGH LIMIT

DRAFTOR ONE

58600 IGNITOR

MV SOL.

PV SOL.

MV/PV

GND

24V (GND)

PRESS. SW.

24V (HOT)

SPARK

IGN

MAXITROL

W/ROOM SENSING

T107A

TSTAT

ONE

USE

A1010 FOR

HR VALVE

PER

SINGLE FURNACE

A1011 FOR

MULTIPLE FURNACE

FURNACE

SECTION

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Electric

Power

High-Efficiency Units

The sensor proves pilot ignition and

NOTE: On duct furnaces, the fan motor

and associated controls shown in the

wiring diagrams are not integral to the

unit. It is essential, however, that the air

handling system be interlocked with the

duct furnace to prevent duct furnace

operation without airflow.

shuts off the ignitor.

With the pilot lit, the main gas valve

opens.

Main burners are lit at 100 percent of the

unit’s rated input.

Single-Stage Control

The fan time delay relay allows the

heater to come up to operating

temperature. At this time, the fan time

delay relay closes and activates the fan

motor.

With power applied to the unit:

The thermostat calls for heat.

The pressure switch measures the flow

through the vent system and energizes

the intermittent pilot when the flow is

correct. CAUTION:THE PRESSURE

SWITCH MUST NOT BE BYPASSED.

THE UNIT MUST NOT BE FIRED UNLESS

THE FLUEVENT FAN IS OPERATING. If

this procedure is not followed, there may

be a gas buildup that could cause an

explosion.

The unit continues to fire until the

thermostat is satisfied and no longer

calls for heat.

The main and pilot valve close.

The pressure switch opens and

deactivates the flue vent fan.

The fan time delay relay remains closed,

keeping the fan operating to dissipate

residual heat from the heat exchanger. At

this time, the fan time delay relay opens

and deactivates the fan motor.

The pressure switch closes and activates

the flue vent fan.

The pilot valve opens.

The ignitor sparks continuously to ignite

the pilot.

LINE IN

115-240/1/60

TIME DELAY

BLOWER

MOTOR

SUMMER

WINTER

RELAY 1

DRAFTOR

MTR.

• Caution - Disconnect power before

servicing.

• Unit must be grounded.

115-240/24V

50VA

• Use copper conductors only.

• If any of the original wire as supplied

with the appliance must be replaced, it

must be replaced with wiring material

having a temperature rating of at least

125°C.

DRAFTOR

PRESS. SW.

HIGH LIMIT

58600

THERMOSTAT

IGNITOR

MV SOL.

MV/PV

PV SOL.

GND

24V (GND)

24V (HOT)

• Hi-limit and blocked vent (spill) wires

minimum 200°C.

IGN

SPARK

• Refer to installation instructions for

venting, gas piping and start-up

procedures.

• - - - Indicates Field Wiring.

• ___ Indicates FactoryWiring.

RELAY 1

TIME DELAY

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Electric

Power

Separated Combustion Units

Single-Stage Control

When the pressure switch is closed, the

power venter motor is energized.

The fan time delay relay allows the

heater to come up to operating

temperature. At this time, the fan time

delay relay closes and activates the fan

motor.

With power applied to the unit:

The thermostat calls for heat.

The pilot valve opens.

The ignitor sparks continuously to ignite

The pressure switch measures the

pressure differential between the air inlet

and exhaust vent systems. If the

differential is correct, the intermittent

pilot ignition is energized. CAUTION:THE

PRESSURE SWITCH MUST NOT BE

BYPASSED.THE UNIT MUST NOT BE

FIRED UNLESSTHE FLUEVENT FAN IS

OPERATING.

the pilot.

The unit continues to fire until the

thermostat is satisfied and no longer

calls for heat.

The sensor proves pilot ignition and

shuts off the ignitor.

The main and pilot valve close.

The pressure switch opens and

deactivates the flue vent fan.

The fan time delay relay remains closed,

keeping the fan operating to dissipate

residual heat from the heat exchanger. At

this time, the fan time delay relay opens

and deactivates the fan motor.

With the pilot lit, the main gas valve

opens.

Main burners are lit at 100 percent of the

unit’s rated input.

BLOWER/FAN

MOTOR

LINE IN 115/1/60

MTR

FAN TIME DELAY

DISCONNECT

DRAFTOR

MOTOR

BLACK

MTR

SUMMER/WINTER SWITCH

LINE TO

24V XFORMER

50 VA

VOLTS

FAN TIME DELAY

HIGH LIMIT 1

DRAFTOR ONE

• Caution - Disconnect power before

servicing.

• Unit must be grounded.

58600 IGNITOR

MV SOL.

PV SOL.

• Use copper conductors only.

• If any of the original wire as supplied

with the appliance must be replaced, it

must be replaced with wiring material

having a temperature rating of at least

125°C.

MV/PV

GND

24V (GND)

PRESS. SW.

24V (HOT)

SPARK

IGN

• Hi-limit and blocked vent (spill) wires

minimum 200°C.

• Refer to installation instructions for

venting, gas piping and start-up

procedures.

T/D STAT

W/B

• - - - Indicates Field Wiring.

• ___ Indicates Factory Wiring.

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Electric

Power

Separated Combustion Units

Single-Stage Control

Electronic Modulating 4-20 mA/0-10VDC

Input

Table EP-1 — Motor Electrical Data — Centrifugal Fan

Current

Characteristics

115/60/1

Full Load Amps*

¼hp

5.0

1/3hp

5.9

½hp

7.2

3.9

2.7

2.4

1.2

¾hp

11.0

5.5

1hp

14.0

7.0

4.0

3.6

1.8

230/60/1

2.5

3.3

208/60/3

3.1

230/60/3

2.8

1.4

460/60/3

*FLA based on NEC ratings. All m otors are 1725 rpm .

NR = Motor available, but not rated by NEC.

Table EP-2 — Motor Electrical Data — Horizontal Blower

Current

Full Load Amps*

Characteristics

115/60/1

½hp

5.9

3.3

½hp

7.2

3.9

2.7

2.4

1.2

¾hp

11.0

5.5

3.1

2.8

1.4

1hp

14.0

7.0

1½hp

16.4

8.2

2hp

3hp

24.6

12.3

6.4

34.0

17.0

9.2

8.6

4.3

230/60/1

208/60/3

4.0

3.6

1.8

4.9

230/60/3

4.4

2.2

5.8

460/60/3

2.9

Motor wt. (LB)

*FLA based on NEC ratings. All m otors are 1,725 rpm .

NR = m otor available, but not rated by NEC.

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Dim ension and

Weights

Table DW-1 – High Efficiency Propeller Fan Gas Unit Heater Dimensional Data (in.) (mm)

Model

GHND/ GHND/ GHND/ GHND/ GHND/ GHND/ GHND/ GHND/

GHND/ GHND/ GHND/ GHND/ GHND/ GHND/

GHPD

GHPD GHPD

GHPD GHPD GHPD GHPD

GHPD

GHPD GHPD GHPD

GHPD

Unit Sizes

25.75

(654)

(356)

27.5

(699)

25.75

(654)

(356)

27.5

(699)

25.75

(654)

17.5

(445)

27.5

(699)

25.75

(654)

100

31.25

(794)

125

31.25

(794)

150

36.25

(921)

175

36.25

(921)

200

36.25

(921)

225

36.25

(921)

250

36.25

(921)

300

36.25

(921)

350

36.25

(921)

42.625

(1083)

39.125

(994)

37.5

(953)

39.25

(997)

40.125

(1019)

26.75

(679)

(457)

18.25

(464)

30.625

(778)

16.75

(425)

400

36.25

(921)

48.125

(1222)

39.125

(994)

37.5

(953)

44.75

(1137)

45.625

(1159)

26.75

(679)

“A” Height to

Top of Unit

“B” Width Of Unit

17.5 17.875 20.625 20.625 23.375

(445) (454) (524) (524) (594)

26.125 28.875

(664) (733)

31.625 37.125

(803) (943)

“C” Height to Top

Of Hanger

“D” Depth to Rear

Of Housing

“E” Hanging

Distance Width

“F” Discharge

Opening Width

“G” Depth to Unit

Side Jacket

“H” Discharge

Opening Height

“J” to Centerline

Of Flue

27.5 34.125 34.125 39.125 39.125

(699)

39.125 39.125 39.125 39.125

(994)

37.5

(867)

37.5

(867)

37.5

(953)

17.25

(438)

(994)

37.5

(953)

17.25

(438)

(994)

37.5

(994)

37.5

(994)

37.5

(953)

28.25

(718)

(994)

37.5

(953)

33.75

(857)

30.375 30.375 30.375 30.375

(772)

(279)

(254)

(772)

16.5

(419)

15.5

(394)

(772)

16.5

(419)

(953)

14.5

(953)

22.75

(578)

(953)

25.5

(279)

(254)

(368)

(508)

(648)

15.5 15.375 18.125 18.125 20.875

(394)

23.625 26.375 29.125 34.625

(391)

26.75

(679)

(457)

5.872

(149)

(460)

26.75

(679)

(457)

7.25

(184)

(460)

26.75

(679)

(457)

7.25

(184)

(530)

26.75

(679)

(457)

8.625

(219)

(600)

26.75

(679)

(457)

(254)

(670)

26.75

(679)

(457)

11.25

(286)

(740)

26.75

(679)

(457)

12.75

(324)

(879)

26.75

(679)

(457)

15.5

(394)

19.375 19.375 19.375 19.375

(492)

16.25

(413)

(492)

16.25

(413)

(492)

16.25

(413)

5.75

(492)

16.25

(413)

5.75

(457)

(102)

(146)

(533)

30.625

(778)

16.75

(425)

“K” Depth to

Centerline Of Flue

“L” Hanger Location

23.625 23.625 23.625 23.625 30.625 30.625 30.625 30.625

30.625 30.625 30.625 30.625

(600)

13.75

(349)

(102)

0.5

(600)

13.75

(349)

(102)

0.5

(600)

13.5

(343)

(102)

0.5

(600)

13.5

(343)

(102)

0.5

(778)

16.25

(413)

(102)

0.5

(778)

16.375

(416)

(127)

0.5

(778)

16.75

(425)

(127)

0.75

(778)

16.75

(425)

(778)

16.75

(425)

16.75 16.375 16.375

(425)

(416)

Flue Size Dia.-in.*

(Dia.-mm)

(102)

(127)

(152)

(2) 18

0.75

(152)

(2) 18

0.75

Fan Diameter in.

Gas Inlet-Natural Gas in.

Gas Inlet- LP Gas in.

Approx. Shipping wt.

(lb.)

18 (2) 16

0.5

0.75

0.5 ½ or ¾ ½ or ¾ ½ or ¾

½ or ¾

(36)

109

(49)

119

(54)

174

(79)

197

(89)

219

(99)

238

(108)

249

(113)

275

(125)

305

(138)

350

(159)

414

(188)

461

(209)

(kg)

(43)

*The flue opening on all “GH” units is 5

/8" diam eter. Therefore a transition adapter is required by installer on these units.

Side View - 30 through 200 Side View - 225 through 400

Front View - 30 through 400

*Canadian units include vent cap and reducer/increaser (if required).

Dim ensions in ( ) are in m illim eters.

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Dim ension and

Weights

Table DW-2 – High-Efficiency Centrifugal Fan Unit Heater Dimensional Data (in.) (mm)

Model

GBND/

GBPD

GBND/

GBPD

GBND/

GBPD

GBND/

GBPD

GBND/

GBPD

GBND/

GBPD

GBND/

GBPD

GBND/

GBPD

GBND/

GBPD

GBND/

GBPD

Unit Size

100

31.25

(794)

17.875

(454)

34.125

(867)

42.625

(1083)

14.5

(368)

15.375

(391)

5.875

(149)

16.375

(416)

16.375

(416)

125

31.25

(794)

20.625

(524)

34.125

(867)

44.25

(1124)

17.25

(438)

18.125

(460)

7.25

(184)

16.375

(416)

16.375

(416)

150

36.25

(921)

20.625

(524)

39.125

(994)

44.25

(1124)

17.25

(438)

18.125

(460)

7.25

(184)

16.375

(416)

16.375

(416)

175

36.25

(921)

23.375

(594)

39.125

(994)

200

36.25

(921)

26.125

(664)

39.125

(994)

(1194)

22.75

(578)

23.625

(600)

(254)

16.375

(416)

17.875

(454)

225

36.25

(921)

28.875

(733)

39.125

(994)

250

36.25

(921)

31.625

(803)

39.125

(994)

(1295)

28.25

(718)

29.125

(740)

12.75

(324)

16.375

(416)

21.875

(556)

300

36.25

(921)

37.125

(943)

39.125

(994)

48.25

(1226)

33.75

(857)

34.625

(879)

15.5

(394)

16.375

(416)

21.875

(556)

350

36.25

(921)

42.625

(1083)

39.125

(994)

(1295)

39.25

(997)

40.125

(1019)

18.25

(464)

16.375

(416)

21.875

(556)

400

36.25

(921)

48.125

(1222)

39.125

(994)

(1295)

44.75

(1137)

45.625

(1159)

(533)

16.375

(416)

21.875

(556)

“A” Height to

Top of Unit

“B” Width

Of Unit

“C” Height to

Top of Hanger

“D” Depth to

Rear of Housing

“E” Hanging

Distance Width

“F” Discharge

Opening Width

“J” To Centerline

Of Flue

“L” Hanger

Location

“M” Hanging

Distance Depth

Flue Size (Dia-in.) *

(Dia-mm)

(1194)

(1295)

25.5

(508)

20.875

(530)

8.625

(219)

16.375

(416)

17.875

(454)

(648)

26.375

(670)

11.25

(286)

16.375

(416)

21.875

(556)

(102)

0.5

(102)

0.5

(102)

0.5

(102)

0.5

(127)

0.5

(127)

(152)

(2) 10

0.75

(152)

(2) 12

0.75

(152)

(2) 12

0.75

Blower Size (in.)

Gas Inlet-Natural Gas (in.)

Gas Inlet- LP Gas (in.)

Approx. Shipping wt.

(lb.)

0.75

½ or ¾

262

(119)

279

(127)

314

(142)

336

(152)

363

(165)

408

(185)

427

(194)

471

(214)

561

(254)

594

(269)

(kg)

*The flue opening on all “GB” units is 5 /8" diam eter. Therefore a transition adapter is required by installer on these units.

Side View - 100 through 200

Side View - 225 through 400

Front View - 100 through 400

*Canadian units include vent cap and reducer/increaser (if required).

Dim ensions in ( ) are in m illim eters.

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Dim ension and

Weights

Table DW-3 – Separated Combustion – Propeller Fan Gas Unit Heater Dimensional Data (in.) (mm)

Model

GAND/

GAPD

GAND/

GAPD

GAND/

GAPD

GAND/

GAPD

GAND/

GAPD

GAND/

GAPD

GAND/

GAPD

GAND/

GAPD

GAND/

GAPD

GAND/

GAPD

Unit Size

100

31.25

(794)

34.062

(865)

14.75

(375)

15.375

(391)

17.875

(454)

5.875

(149)

125

31.25

(794)

34.062

(865)

17.5

(445)

18.125

(460)

20.625

(524)

7.25

(184)

(102)

0.5

150

36.25

(921)

39.062

(992)

17.5

(445)

18.125

(460)

20.625

(524)

7.25

(184)

(102)

0.5

175

36.25

(921)

39.062

(992)

20.25

(514)

20.875

(530)

23.375

(594)

8.625

(219)

200

36.25

(921)

39.062

(992)

(584)

23.625

(600)

26.125

(664)

(254)

(127)

0.5

225

36.25

(921)

39.062

(992)

25.75

(654)

26.375

(670)

28.875

(733)

11.25

(286)

250

36.25

(921)

39.062

(992)

28.5

(724)

29.125

(740)

31.625

(803)

12.75

(324)

300

36.25

(921)

39.062

(992)

350

36.25

(921)

39.062

(992)

39.5

(1003)

40.125

(1019)

42.625

(1083)

18.25

(464)

400

36.25

(921)

39.062

(992)

“A” Height to

Top of Unit

“B” Height to

Top of Hanger

“C” Hanging

Distance Width

“D” Discharge

Opening Width

“E” Width

(864)

34.625

(879)

37.125

(943)

15.5

(1143)

45.625

(1159)

48.125

(1222)

Of Unit

“F” To Centerline

Of Flue

(394)

(533)

Flue Size Dia.-in.

(Dia.-mm)

(102)

0.5

(102)

0.5

(127)

(152)

(2)16

0.75

(152)

(2)18

0.75

(152)

(2)18

0.75

Fan Diameter (in.)

Gas Inlet-Natural Gas (in.)

Gas Inlet- LP Gas (in.)

Approx. Shipping wt.

(lb.)

0.75

½ or ¾

200

(91)

228

(103)

256

(116)

284

(129)

312

(142)

340

(154)

368

(167)

432

(196)

488

(221)

545

(247)

(kg)

*The flue openings on all units are 5

8” diam eter. Therefore, a transition adapter is required by installer on these units.

Front View - 100 through 400

Side View - 225 through 400

NOTE: Air intake is round on 225/

250 units. For 300/400 units, air

intake is as shown.

Side View - 100 through 200

*Canadian units include vent cap and reducer/increaser (if required).

Dim ensions in ( ) are in m illim eters.

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Table DW-4 – Separated Combustion – Centrifugal Fan Unit Heater Dimensional Data

Model

GKND/

GKPD

GKND/

GKPD

GKND/

GKPD

GKND/

GKPD

GKND/

GKPD

GKND/

GKPD

GKND/

GKPD

GKND/

GKPD

GKND/

GKPD

GKND/

GKPD

Unit Size

100

31.25

(794)

34.062

(865)

14.75

(375)

15.375

(391)

17.875

(454)

5.875

(149)

18.5

(470)

42.75

(1086)

(102)

125

31.25

(794)

34.062

(865)

17.5

150

36.25

(921)

39.062

(992)

17.5

175

36.25

(921)

39.062

(992)

20.25

(514)

20.875

(530)

23.375

(594)

8.625

(219)

(508)

47.187

(1199)

(102)

200

36.25

(921)

39.062

(992)

225

36.25

(921)

39.062

(992)

25.75

(654)

26.375

(670)

28.875

(733)

11.25

(286)

(584)

50.875

(1292)

(127)

250

36.25

(921)

39.062

(992)

28.5

(724)

29.125

(740)

31.625

(803)

12.75

(324)

300

36.25

(921)

39.062

(992)

(864)

34.625

(879)

37.125

(943)

15.5

(394)

(584)

50.875

(1292)

350

36.25

(921)

39.062

(992)

39.5

(1003)

40.125

(1019)

42.625

(1083)

18.25

(464)

400

36.25

(921)

39.062

(992)

(1143)

45.625

(1159)

48.125

(1222)

(533)

(584)

(1295)

“A” Height toTop

Top of Unit

“B” Height to Top

Top of Hanger

“C” Hanging

Distance Width

“D” Discharge

Opening Width

“E” Width

Of Unit

“F” To Centerline

Of Flue

“G” Hanging

Distance Depth

“H” Depth to

Rear of Housing

Flue Size (Dia-in.)

(Dia-mm)

(445)

18.125

(460)

20.625

(524)

7.25

(445)

18.125

(460)

20.625

(524)

7.25

(584)

23.625

(600)

26.125

(664)

(184)

18.5

(184)

18.5

(254)

(470)

44.375

(1127)

(102)

(470)

44.375

(1127)

(102)

(508)

47.187

(1199)

(127)

(584)

50.875

(1292)

(1219)

(127)

(152)

(2) 10

0.75

(152)

(2) 12

0.75

(152)

(2) 12

0.75

Blower Size (in)

Gas Inlet-Natural Gas (in.)

Gas Inlet- LP Gas (in.)

Approx. Shipping wt.

(lb.)

0.5

0.75

½ or ¾

0.75

½ or ¾

298

(135)

330

(150)

362

(164)

394

(179)

426

(193)

458

(208)

490

(222)

558

(253)

618

(280)

678

(308)

(kg)

*The flue openings on all units are 5¹/8" diam eter. Therefore, a transition adaptor is required by installer on these units.

Front View - 100 through 400

Side View - 100 through 200

Side View - 225 through 400

NOTE: Air intake is round on 225/250

units. For 300/400 units, air intake is

as shown.

*Canadian units include vent cap and reducer/increaser (if required).

Dim ensions in ( ) are in m illim eters.

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Table DW-5 – Propeller Fan Gas Unit Heater Dimensional Data (in.) (mm)

Model

GPND/ GPND/ GPND/ GPND/ GPND/ GPND/ GPND/ GPND/

GPND/ GPND/ GPND/ GPND/

GPND/

GPPD

350

GPND/

GPPD

400

GPPD

GPPD GPPD

GPPD

125

GPPD

150

GPPD

175

GPPD

200

GPPD

225

GPPD

250

GPPD

300

Unit Size

100

“A” Height to

Top of Unit

25.75

(654)

25.75

(654)

25.75

(654)

17.5

25.75

(654)

31.25

(794)

31.25

(794)

36.25

(921)

36.25

(921)

36.25

(921)

36.25

(921)

36.25

(921)

31.625

(803)

36.25

(921)

36.25

(921)

36.25

(921)

“B” Width of Unit

17.5 17.875 20.625 20.625 23.375

(445)

27.5

(699)

27.625

(702)

26.125 28.875

37.125 42.625 48.125

(356)

27.5

(356)

27.5

(445)

27.5

(454)

33.25

(845)

32.5

(826)

14.75

(375)

(524)

33.25

(845)

32.5

(826)

17.5

(445)

(524)

38.25

(972)

(914)

17.5

(445)

(594)

38.25

(972)

(914)

20.25

(514)

(664)

(733)

(943)

(1083)

(1222)

“C” Height to

Top of Hanger

“D” Depth to

Rear of Housing

“E” Hanging

Distance Width

“F” Discharge

Opening Width

“G” Depth to Unit

Side Jacket

38.25 39.125 39.125

39.125 39.125 39.125

(699)

27.625

(702)

8.625

(219)

(254)

19.375

(492)

16.25

(413)

11.875

(302)

(699)

27.625

(702)

(699)

27.625

(702)

(972)

(994)

38.25

(972)

25.5

(994)

38.25

(972)

28.25

(718)

(994)

37.75

(959)

33.75

(857)

(994)

38.25

(972)

39.25

(997)

(994)

38.25

(972)

44.75

(1137)

(914)

8.625 14.125 14.125

(219)

(254)

(359)

15.5

(394)

(359)

(584)

(648)

15.5 15.375 18.125 18.125 20.875 23.6256 26.375 29.125

34.625 40.125 45.625

(394)

(391)

26.75

(679)

(460)

26.75

(679)

(460)

26.75

(679)

(530)

26.75

(679)

(600)

26.75

(679)

(457)

15.125

(384)

(203)

R,H

(670)

26.75

(679)

(457)

16.25

(413)

(203)

R,H

(740)

26.75

(679)

(457)

16.25

(413)

(203)

R,H

(879)

26.75

(679)

(457)

16.25

(413)

(254)

OV,H

(2) 16

0.75

(1019)

26.75

(679)

(457)

16.25

(413)

(254)

OV,H

(2) 18

0.75

(1159)

26.75

(679)

(457)

16.25

(413)

(305)

OV,#

(2) 18

0.75

19.375 19.375 19.375

(492)

16.25

(413)

11.875

(302)

(492)

16.25

(413)

11.5

(292)

(127)

R,V

0.5

(492)

16.25

(413)

“H” Discharge

Opening Height

“L” Hanger

(457)

11.5 15.125 15.125 15.125 15.125

Location

(292)

(384)

“S” Flue Size (Dia-in.)

(Dia-mm) (102)

R,V

(102)

R,V

(127)

R,V

(152)

R,V

(152)

R,V

(178)

R,H

(178)

R,H

FlueType*

Fan Diameter (in.)

0.5

0.75

Gas Inlet-Natural Gas (in.) 0.5

0.5

Gas Inlet- LP Gas (in.)

0.5

0.5 ½ or ¾ ½ or ¾

½ or ¾ ½ or ¾ ½ or ¾

Approx. Shipping wt.

(lb.)

(kg)

(33)

(37)

(44)

104

(47)

178

(81)

200

(91)

209

(95)

232

(105)

242

(110)

279

(127)

301

(137)

356

(161)

415

(188)

451

(205)

Net Unit wt.

(lb.)

(27)

(31)

(38)

(41)

148

(67)

168

(76)

175

(79)

196

(89)

216

(98)

239

(108)

261

(118)

304

(138)

340

(154)

376

(171)

(kg)

*R – Round, OV – Oval. Refer to detail above for 400 MBh unit.

Side View - 30 through 200

Side View - 225 through 400 Front View - 30 through 400

Dim ensions are in inches.

(Dim ensions in parentheses are in m m .)

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Table DW-6 –Tubular Heat Exchanger Dimensional Data (in.) (mm)

Model

GTND/GTPD

003

GTND/GTPD

004

GTND/GTPD

006

GTND/GTPD

007

GTND/GTPD

009

Unit Size

“A” Height toTop of Unit

17.75

(451)

18.75

(476)

26.75

(679)

10.5

(267)

(406)

16.25

(413)

17.75

(451)

18.75

(476)

26.75

(679)

10.5

(267)

(406)

16.25

(413)

17.75

(451)

18.75

(476)

26.75

(679)

10.5

(267)

(406)

16.25

(413)

(305)

“B” Height to Top of Hanger

“C” Overall Depth

(330)

25.5

(330)

25.5

(648)

7.25

(648)

7.25

Center Line Height of Flue

Center Line Electric Connection

“ F” Discharge Opening Height

(184)

10.25

(260)

10.5

(184)

10.25

(260)

10.5

(267)

“G” Fan Diameter-in.

Unit Weight

(lbs.)

(28)

(31)

(39)

(42)

(kgs.)

Shipping Weight

(lbs.)

(33)

(35)

102

(46)

108

(49)

108

(49)

(kgs.)

Top View

RearView

Side View

Front View

Dim ensions are in inches.

(Dim ensions in parentheses are in m m .)

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Dim ension and

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Table DW-7 –Tubular Heat Exchanger Unit Heater Dimensional Data (in.) (mm)

Gas

Inlet

Nat.

Gas

Unit

Shipping

Weight

lbs. (kg)

173

(78)

185

(84)

195

(88)

241

(109)

251

(114)

261

(118)

Models

Input

Flue

Dia.

(127)

Fan

Dia

Inlet Weight

GTND/GTPD MBh

lbs. (kg)

133

(60)

145

(66)

155

(70)

191

(87)

201

(91)

211

010

012

015

017

020

025

100.0

125.0

150.0

175.0

200.0

250.0

33¾

(857)

33¾

(857)

33¾

(857)

33¾

(857)

33¾

(857)

33¾

(857)

20¾

(527)

20¾

(527)

20¾

(527)

32¾

(831)

32¾

(831)

32¾

(831)

13^3/8

18^5/8

(473)

18^5/8

(473)

18^5/8

(473)

30^5/8

(778)

30^5/8

(778)

30^5/8

(778)

18¾

(476)

18¾

(476)

18¾

(476)

30¾

(781)

30¾

(781)

30¾

(781)

4¾

24½

(622)

24½

(622)

24½

(622)

24½

(622)

24½

(622)

24½

(622)

25¼

(641)

25¼

(641)

25¼

(641)

37¼

(946)

37¼

(946)

37¼

(946)

(340) (279)

13^3/8

(340) (279)

13^3/8

(340) (279)

19^3/8

(492) (279)

19^3/8

(492) (279)

19^3/8

(492) (279)

(121)

4¾

(121)

4¾

(121)

4¾

(121)

4¾

(121)

4¾

(121)

(127)

(96)

RearView

Side View

Front View

Dim ensions are in inches.

(Dim ensions in parentheses are in m m .)

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Dim ension and

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Table DW-8 –Tubular Heat Exchanger Unit Heater Dimensional Data (in.) (mm)

Gas

Inlet

Nat.

Gas

Unit

Shipping

Weight

lbs. (kg)

367

(166)

381

(173)

395

(179)

Models

Input

Flue

Dia.

(152)

Fan

Dia

Inlet Weight

GTND/GTPD MBh

½ or

lbs. (kg)

307

(139)

321

(145)

335

(152)

030

035

040

300.0

350.0

400.0

50¾

28^3/8

12¼

48^5/8

48¾

5^1/8

24½

55¼

(2) 16

(864) (1289) (721) (311) (1235) (1238) (130)

34 50¾ 12¼ 48¾

28^3/848^5/85^1/8

(864) (1289) (721) (311) (1235) (1238) (130)

(622) (1403)

24½ 55¼

(622) (1403)

24½ 55¼

(622) (1403)

(2) 18

50¾

28^3/8

48^5/8

48¾

5^1/8

(864) (1289) (721) (311) (1235) (1238) (130)

RearView

Side View

Front View

Dim ensions are in inches.

(Dim ensions in parentheses are in m m .)

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Dim ension and

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Table DW-9 – Centrifugal Fan Gas Unit Heater Dimensional Data (in.) (mm)

Model

GCND/

GCPD

GCND/

GCPD

GCND/

GCPD

GCND/

GCPD

GCND/

GCPD

GCND/

GCPD

GCND/

GCPD

GCND/

GCPD

GCND/

GCPD

GCND/

GCPD

Unit Size

100

31.25

(794)

17.875

(454)

33.25

(845)

42.625

(1083)

14.75

(375)

125

31.25

(794)

20.625

(524)

33.25

(845)

44.25

(1124)

17.5

150

36.25

(921)

20.625

(524)

38.25

(972)

44.25

(1124)

17.5

175

36.25

(921)

23.375

(594)

38.25

(972)

200

36.25

(921)

26.125

(664)

38.25

(972)

225

36.25

(921)

28.875

(733)

38.25

(972)

250

36.25

(921)

31.625

(803)

38.25

(972)

300

36.25

(921)

37.125

(943)

38.25

(972)

48.25

(1226)

33.75

(857)

34.625

(879)

16.25

(413)

27.875

(708)

350

36.25

(921)

42.625

(1083)

38.25

(972)

(1295)

39.25

(997)

40.125

(1019)

16.25

(413)

28.875

(733)

400

36.25

(921)

48.125

(1222)

38.25

(972)

(1295)

44.75

(1137)

45.625

(1159)

16.25

(413)

28.875

(733)

“A” Height toTop of Unit

“B” Width of Unit

“C” Height to Top of

Hanger

“D” Depth to Rear of

Housing

(1194)

20.25

(514)

20.875

(530)

15.125

(384)

(1194)

(1295)

25.5

(1295)

28.25

(718)

29.125

(740)

16.25

(413)

21.875

(556)

“E” Hanging Distance

Width

(445)

18.125

(460)

15.125

(384)

25.875

(657)

(445)

18.125

(460)

15.125

(384)

17.5

(584)

23.6256

(600)

15.125

(384)

(648)

26.375

(670)

16.25

(413)

21.875

(556)

“F” Discharge Opening 15.375

Width

(391)

15.125

(384)

24.625

(625)

“L” Hanger Location

M” Hanging Distance

Depth

“S” Flue Size Dia.

(445)

(483)

(152)

R,V

(152)

R,V

(178)

R,H

(178)

R,H

(203)

R,H

(203)

R,H

(203)

R,H

(254)

OV,H

(2) 10

0.75

(254)

OV,H

(2) 12

0.75

(305)

OV,#

(2) 12

0.75

½ or ¾

Flue Type *

Blower Size (in)

Gas Inlet - Natural Gas (in.) 0.5

0.5

0.75

Gas Inlet - LP Gas (in.)

0.5

½ or ¾

Approx. Shipping wt.

(lb.)

(kg)

253

(115)

270

(122)

315

(143)

335

(152)

351

(159)

396

(180)

415

(188)

459

(208)

550

(249)

582

(264)

* R = Round, OV = Oval. Refer to Detail A above for 400 MBh unit.

Side View -100 through 200

Side View - 225 through 400

Front View - 100 through 400

*Discharge opening for optional Duct Flange Assem bly.

Dim ensions in ( ) are in m illim eters.

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Dim ension and

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Table DW-10 – Dimensional Data — Standard Duct Furnaces (in.) (mm)

Models

GDND/

GDPD

010

Input

MBh

100

Gas Inlet

Weight

17.125

(435)

Nat.

0.5

lb. (kg)

162

17.875

(454)

15.5

23.875

0.5

(394)

18.25

(464)

18.25

(464)

(533)

23.75

(603)

26.5

(673)

29.25

(743)

34.75

(883)

40.25

(606) (152) RV

(73)

175

012

015

017

020

022

025

030

035

040

125

150

175

200

225

250

300

350

400

20.625

(524)

19.875

(505)

26.625

(676) (152) RV

26.625 RH

(676) (178) RH

29.375 RH

(746) (178) RH

32,125 RH

(816) (203) RH

34.875 RH

(886) (203) RH

37.625 RH

(956) (203) RH

43.125 10 OVH

(1095) (254)OVH

48.265 10 OVH

(1235) (254) ORH

54.125 12 OVH

(1375) (305) OVH

0.5

(79)

186

20.625

(524)

19.875

(505)

(84)

205

23.375

(594)

22.625

(575)

0.5

(93)

221

26.125

(664)

25.375

(645)

0.5

(100)

243

28.875

(733)

28.125

(714)

0.75

½ or ¾

(110)

252

31.625

(803)

30.875

(784)

(113)

301

37.125

(943)

36.375

(924)

(137)

378

42.625

41.875

(1064)

47.375

(1203)

(1083) (1022)

(171)

392

48.125

45.75

(1222) (1162)

(178)

R = Round, OV = Oval, H = Horizontal, V = Vertical

Side View - 100 through125 Front View - 100 through 400 Side View - 150 through 400

Side View - 100 through125

Front View - 100 through 400

Side View - 150 through 400

400Vent Horizontal Alternate 400Vent Special

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Table DW-11 – High Efficiency Duct Furnace (in.) (mm)

Models

GLND/

GLPD

010

Input

MBh

100

Gas Inlet

Nat.

Weight

lb. (kg)

173

D (Dia.)

17.875

(454)

15.5

17.125

(435)

23.875

(606)

(394)

18.25

(464)

18.25

(464)

(533)

23.75

(603)

26.5

(673)

29.25

(743)

34.75

(883)

40.25

(102)

(78)

012

015

017

020

022

025

030

035

040

125

150

175

200

225

250

300

350

400

20.625

(524)

19.875

(505)

25.625

(651)

186

(102)

(84)

20.625

(524)

19.875

(505)

26.625

(676)

197

(102)

(89)

23.375

(594)

22.625

(575)

29.375

(746)

216

(102)

(98)

26.125

(664)

25.375

(645)

32.125

(816)

232

(127)

(105)

254

28.875

(733)

28.125

(714)

34.875

(886)

½ or ¾

(127)

(115)

263

31.625

(803)

30.875

(784)

37.625

(956)

(127)

(119)

312

37.125

(943)

36.375

(924)

43.125

(1095)

48.625

(1235)

54.125

(1375)

(152)

(142)

389

42.625

41.875

(1064)

47.375

(1203)

(1083) (1022)

(152)

(176)

403

48.125

45.75

(1222) (1162)

(152)

(183)

Detail G

Positions - Front -

Rear - Right - Left

Side View - 100 through125 Front View - 100 through 400 Side View - 150 through 400

Side View - 100 through 125

Front View - 100 through 400

Side View - 150 through 400

*Canadian units include vent cap and reducer/increaser (if required).

Rear vent position shown. See Detail G for optional top vent position.

Dim ensions in ( ) are in m illim eters.

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Table DW-12 – Separated Combustion Indoor Gas Duct Furnace (in.) (mm)

Weight

lb.

Models

Input

MBh

Gas Inlet

NAT.

GMND/GMPD

D(Dia)*

(kg)

161

17 ^7/8

(454)

15 ½

(394)

17 ^1/8

(435)

010

012

015

017

020

022

025

030

035

100

125

150

175

200

225

250

300

350

400

(102)

(73)

180

(82)

188

(85)

207

(94)

227

(103)

246

(112)

266

(121)

305

(138)

20 ^5/8

(524)

18 ¼

(464)

18¼

(464)

(533)

23 ¾

(603)

26½

(673)

29¼

(743)

34¾

(883)

40 ¼

(1022)

19 ^7/8

(505)

(102)

20 ^5/8

(524)

19 ^7/8

(505)

(102)

23 ^3/8

(594)

22 ^5/8

(575)

(102)

26 ^1/8

(664)

25 ^3/8

(645)

(127)

28 ^7/8

(733)

28 ^1/8

½ or ¾

(714)

(127)

31 ^5/8

30 ^7/8

(803)

(784)

(127)

37 ^1/8

(943)

36 ^3/8

(924)

(152)

42 ^5/8

41 ^7/8

344

(156)

383

(174)

(1083)

(1064)

(152)

48 ^1/8

45¾

(1162)

47 ^3/8

040

(1222)

(1203)

(152)

Note:

*“D” diam eter equals the air inlet opening and the flue discharge opening.

100 through 250

300 through 400

†Oval connector shown accepts 6” Dia. (152) pipe.

*Canadian units include vent cap and reducer/increaser (if required).

Rear vent position shown. See Detail G for optional top vent position.

Dim ensions in ( ) are in m illim eters.

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Table DW-13 – Horizontal Blower Assembly Dimension Data (in.) (mm)

Duct Furnace

No.

Filter

Req’d.

Approx. Ship wt.

Less Motor

lb. (kg)

135

Model

No.

Nominal Size Used with

Filter Data

Size **

cfm

(Input-MBh)

100

HBAC-15

1500

65-½

21-¼

15-¾

15-^5/8

(397)

18-^3/8

(467)

18-^3/8

(467)

21-^1/8

(537)

23-^7/8

(606)

26-^5/8

(676)

29-^3/8

(746)

34-^7/8

(886)

40-^3/8

(1026)

45-^7/8

(1165)

25 x 25 x 1

(1664)

65-½

(660)

(254)

(457)

(540)

(400)

(61)

125

150

175

200

225

250

300

350

400

21-¼

(540)

21-¼

(540)

21-¼

(540)

35-¾

(908)

35-¾

(908)

35-¾

(908)

15-¾

(400)

15-¾

(400)

15-¾

(400)

30-^3/8

(772)

25 x 25 x 1

25 x 20 x 1

135

(1664)

65-½

(660)

(254)

(457)

(61)

HBAC-20

HBAC-30

2000

3000

155

(1664)

65-½

(660)

(254)

(457)

(70)

155

(1664)

65-½

(660)

40-½

(254)

(457)

(70)

200

(1664) (1029)

(254)

(457)

(91)

65-½

(1664) (1029)

65-½ 40-½

(1664) (1029)

65-½ 60-½

(1664) (1537)

69-½ 60-½

40-½

30-3/8

(772)

30-^3/8

200

(254)

(457)

(91)

200

(254)

(457)

(772)

(91)

HBAC-45

4500

55-¾

(1416)

55-¾

50-^3/8

296

(254)

(457)

(1280)

50-^3/8

(134)

296

(1765) (1537)

69-½

(1765)

(356)

(559)

(1416)

55-¾

(1280)

(134)

296

60-½

(1537)

50-^3/8

(356)

(559)

(1416)

(1280)

(134)

Note:

Nom inal 4,500 cfm unit has two blowers driven by one m otor.

*Transition designed for specific duct furnace referenced in the table above. Variations from standard will require field supplied transitions.

Dim ensions in ( ) are in m illim eters.

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Transition

Table DW-14 – Flue Vent Dimensional Data (Field Installed)

Unit Size Input MBh

(kW)

(8.8)

1-¼

(32)

(13.2)

1-¼

(32)

(17.6)

1-¾

(44)

(22.0)

1-¾

(44)

100

(29.3)

2-^1/8

(54)

125

(36.6)

2-^15/16

(75)

150

(43.9)

2-½

(64)

175

(51.2)

200

(58.6)

3-¼

(83)

225

(65.9)

3-½

(89)

250

(73.2)

3-¾

(95)

300

350

(102.5)

400

(117.1)

(87.8)

HeaterTo Ventor Draftor

Orifice Size “0”

Normal

(76)

(102)

(254)

(102)

Flue Size “S”

(102)

(127)

(152)

(178)

(203)

(254)

(305)

Type: R-round, Ov-oval

Recommended Flue

Pipe Diameter

(76)

(102)

100

(30.5)

(102)

100

(30.5)

(102)

100

(30.5)

(102)

100

(30.5)

(102)

100

(30.5)

(102)

100

(30.5)

(102)

100

(30.5)

(127)

100

(30.5)

(127)

100

(30.5)

(127)

100

(30.5)

(127)

100

(30.5)

(127)

100

(152)

100

Maximum Length Of Run 100

ft. (m)

Notes:

(30.5)

1. Installer m ay choose to use five-inch where four-inch pipe is shown

2. Runs should be reduced as follows for listed accessories. Each 90° elbow-10 feet. Each 45° elbow-5 feet. Briedert cap or equivalent-10 feet.

3. Discharge of the flue vent fan is five inches. Therefore, a transition by the installer is required on 30 through 175 MBh and 400 MBh units.

On units 30-250 MBh, flue vent fan and adapter ship in the sam e box. On units over 250 MBh, flue vent fan and adapter ship in separate boxes.

Motors are ¹/12 hp. 115V fans draw 2.2 am ps. 208 and 230V fans draw 1.1 am ps.

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Table DW-15 – Factory Installed Flue Vent Data (Standard on High Efficiency Units)

Unit Size

Input MBh

Flue Outlet

5 ^1/8

100

125

150

175

200

225

250

300

350

400

”

5 ^1/8

”

4” R

5 ^1/8

”

4” R

5 ^1/8

”

4” R

5 ^1/8

”

4” R

5 ^1/8

”

4” R

5 ^1/8

”

4” R

5 ^1/8

”

4” R

5 ^1/8

”

5” R

5 ^1/8

”

5” R

5 ^1/8

”

5” R

5 ^1/8

”

6” R

5 ^1/8

”

6” R

5 ^1/8

”

6” R

Recommended Flue Size 4” R

Max. Length of Run-Feet¹50

Notes:

1. Vent pipe equivalent length m ust not exceed 50 feet. Equivalent length is the total length of straight sections, plus 15 feet for each 90° elbow and 8 feet for each 45° elbow.

2. Horizontal vent pipes should be pitched downward /4-inch per foot toward the outlet for condensate drainage.

3. Motors are 1/20 hp. All fans are 115V and draw 1.5 am ps.

Table DW-16 – Factory Installed Flue Vent Data (Standard on Separated Combustion Units)

Unit Size

Input MBh

Flue Outlet

5 ^1/8

4” R 4” R 4” R 4” R 4” R 4” R 4” R 4” R 5” R 5” R 5” R

50 50 50 50 50 50 50 50 50 50 50

4” R 4” R 4” R 4” R 4” R 4” R 4” R 4” R 5” R 5” R 5” R

50 50 50 50 50 50 50 50 50 50 50

100

125

150

175

200

225

250

300

350

5 ^1/8

6” R 6” R

50 50

400

Flue

”

5 ^1/8

”

5 ^1/8

”

5 ^1/8

”

5 ^1/8

”

5 ^1/8

”

5 ^1/8

”

5 ^1/8

”

5 ^1/8

”

5 ^1/8

”

5 ^1/8

”

5 ^1/8

6” R

”

5 ^1/8

”

Recommended Flue Size

Max. Length of Run-Feet¹

Combustion Air Inlet

Combustion Air

Notes:

6” OV 6”OV 6” OV

50 50 50

Max. Length of Run-Feet¹

1. Flue outlet or com bustion air inlet pipe equivalent length m ust not less than 5 feet and m ust not exceed 50 feet. Equivalent length is the total length of straight sections, plus 15

feet for each 90° elbow and 8 feet for each 45° elbow.

2. Horizontal vent pipes should be pitched downward

/4-inch per foot toward the outlet for condensate drainage.

3. Motors are 1/20 hp. All fans are 115V and draw 1.5 am ps.

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30° Nozzle

60° Nozzle

90° Nozzle

Y-Splitter

Table DW-17 — Nozzle Dimensional Data Chart

Unit MBh 100

125

150

175

200

225

250

300

350

400

Note:

Inches

(kW)

17.44

(445)

20.19

(513)

20.19

(513)

22.94

(583)

25.69

(653)

28.44

(722)

31.19

(792)

36.69

42.19

47.69

30º, 60º and 90º nozzles are shipped unassem bled with

bagged hardware and field assem bling and

installation instruction sheet. The six (6) louvers and

louver springs are rem oved from the unit heaters and

transferred to the nozzles in the field.

(932) (1072)

(1211)

Inches

(kW)

15.368 18.118

(391) (460)

18.118 20.868 23.618

(460) (530) (600)

26.368

(670)

29.118 34.618 40.118 45.618

(740)

(879) (1019)

(1159)

Table DW-18 —Y-Splitter Dimensional Data Chart

Unit MBh 100

125

150

175

200

225

250

300

350

400

Width

Inches

(kW)

15-^3/8

(391)

18-^1/8

(461)

18-^1/8

(461)

20-^7/8

(527)

23-^5/8

(600)

26-^3/8

(671)

29-^1/8

(740)

34-^5/8

40-^1/8

45-^5/8

(1159)

(880) (1019)

Height

Inches

(kW)

21-^1/8

(537)

21-^1/8

(537)

21-^1/8

(537)

21-^1/8

(537)

21-^1/8

(537)

21-^1/8

(537)

21-^1/8

(537)

21-^1/8

(537)

21-^1/8

(537)

21-^1/8

(537)

Depth

Inch e s

(kW)

(279)

13-^1/8

(334)

13-^1/8

(334)

15-^1/8

(384)

20-^5/8

(524)

20-^5/8

(524)

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Mechanical

Specifications

Fans

Hydraulic Modulating Gas Valve

(N/A on 30-75 MBh units)

High Efficiency Propeller and

Centrifugal Fan Gas Unit

Heaters

Fan blades are constructed of aluminum

with an aerodynamic contour. All fans

are dynamically balanced for quiet,

efficient operation and supplied with a

protective type fan guard. Rubber-in-

shear isolators provide isolation

Provides modulated heat output. Ignition

is at low fire (50% input) and discharge

temperature sensing bulb located in the

air stream modulates the gas input from

100% to 50% rated input. Provided with

an automatic electric valve in series

which cycles the unit in response to a

low voltage single-stage thermostat

(thermostat not included).

General

Units are completely factory assembled,

piped, wired, and test fired. All units are

AGA Certified and conform with the

latest ANSI Standards for safe and

efficient performance. Units are provided

with two-point suspension hangers on

propeller fan unit heaters and with four-

point suspension hangers on centrifugal

fan unit heaters. All units are available

for operation on either natural or LP

(liquid propane) gas.

between the fan/motor combination and

the unit heater casing.

All Motors

Standard motors are 115V, 60 Hz, single

phase, open drip-proof with built-in

thermal overload protection.

Hydraulic Modulating Gas Valve with

Bypass

(N/A on 30-75 MBh units)

An additional electric valve in parallel

bypasses the hydraulic modulating

valve, overriding the discharge

temperature sensing bulb, allowing full

fire. Requires the use of a separate

thermostat to control the electric valve.

Optional Fan Unit Motors

All motors are 115V, 60 Hz, single phase

totally enclosed with built-in thermal

overload protection and permanently

lubricated bearings.

Casing

Casings are die-formed, 20-gauge

galvanized steel and finished in baked

enamel.The bottom panel is easily

removed to provide service access to the

burners, pilot and orifices.The pilot is

also accessible through a side panel

access plate. All units provided with

independently adjustable horizontal

louvers with stops to prevent total

closure.

Controls

Electronic Modulating Gas Valve (Natural

Gas Units Only)

(N/A on 30-75 MBh units)

A factory installed junction box is

provided for all power connections.

Standard units are provided with a 24V

combination single stage redundant gas

valve, consisting of a combination pilot

solenoid valve, automatic electric gas

valve, pilot filter, pressure regulator, pilot

adjustment and manual shutoff. A flue

vent fan relay and combustion air

proving switch is also provided as

standard. Standard equipment includes

spark-ignited intermittent pilot system

with electronic flame supervision. A 24V

control transformer, high limit and fan

time delay relay are provided.The fan

time delay relay delays the fan start until

the heat exchanger reaches a

Provides modulated heat output. Ignition

is at full fire (100 percent input), and

modulates the gas input from 100 to 50

percent rated input. Available for use

with room thermostat or duct thermostat

with remote setpoint adjustment. Duct

thermostat available with optional

override room thermostat which causes

the unit to go to full fire when the room

temperature falls below the override

room thermostat.

Heat Exchanger

Standard heat exchanger construction

consists of seam welded 20-gauge

aluminized steel tubes and 18-gauge

aluminized steel headers.

The heat exchanger, burner and draft

hood assembly carry a non-prorated

warranty to be free from defective

material and workmanship for a period

of ten years from date of manufacture,

excluding loss due to misuse,

Electronic Modulating

4-20 mA/0-10VDC Input

Provides modulated heat output. Ignition

is at full fire (100 percent input), and

modulates the gas input from 100

percent to 40 percent rated input.

predetermined temperature. It also

allows the fan to operate after burner

shutdown, removing residual heat from

the heat exchanger.

negligence, or corrosion by chemicals

precipitated in the air.

The modulating gas valve shall operate

in response to a 4-20 mA or a 0-10 VDC

input from an external DDC control.

Burners

Two-Stage Gas Valve

(N/A on 30-75 MBh units)

Provides two stages of heat. Ignition is at

low fire (50% of the furnaces rated input).

Requires the use of a two-stage

thermostat.

Burners are die-formed, corrosion

Flue Vent Fan

resistant aluminized steel, with stainless

steel port protectors. Port protectors

reduce scale or foreign matter from

obstructing the burner ports. Burners

individually removable for ease of

inspection and servicing. Each burner is

provided with an individually adjustable,

manually rotated air shutter adjustment.

Flue vent fan provides power venting.

Provided factory assembled to a sealed

flue collection chamber.The flue vent fan

is activated in response to a low voltage

(24V) single-stage thermostat (NOTE:

thermostat must be ordered.) A

combustion air pressure switch is

provided as standard to verify proper

powered vent flow prior to allowing the

gas valve to operate.

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Mechanical

Specifications

Factory Installed Options

Field Installed Accessories

Heat Exchanger Options

High Gas Line Pressure Regulator

(Natural gas units only)

Reduces main gas line pressure to a

minimum of seven inches W.C.. Pressure

at the jobsite must be specified.The

regulator is selected to accommodate

that specific pressure.

Type 409 Stainless Steel

Heat exchanger tubes and headers are

seam welded 20-gaugeType 409

stainless steel.

Type 321 Stainless Steel

Heat exchanger tubes and headers are

seam welded 20-gaugeType 321

stainless steel. (Not available on 30, 45,

60 and 75 MBh units.)

Thermostats

Low voltage room thermostat, single-

stage.

Additional Options

Low voltage room thermostat, single-

stage with summer/winter switch.

Type 409 Stainless Steel Burners

(Not available on 30, 45, 60 and 75 MBh

units.)

Low voltage duct thermostat, single-

stage.

Type 409 Stainless Steel Draft Diverter

(Not available on 30, 45, 60 and 75 MBh

units.)

Universal tamperproof guard for all

room thermostats.

Low voltage room thermostat, two-

stage.

Orifices for elevations over 2,000 feet

Summer/Winter Switch

Vertical Louvers

Low voltage duct thermostat, two-stage.

Room thermostat, electronic modulating

control.

Duct Discharge Flange

(Centrifugal fan units only) Provided in

lieu of louvers on units for use with field

ductwork.

Duct thermostat, electronic modulating

control.

Override room thermostat, for use with

duct thermostat and electronic

modulating control.

OSHA Fan Guards – All Propeller Units

OSHA fan guards are available as a

factory installed or field installed option.

Discharge Nozzles

Y Splitter

30° Downward (100-400 MBh only)

60° Downward (100-400 MBh only)

90° Downward (100-400 MBh only)

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Mechanical

Specifications

Burners

Controls

Separated Combustion

Centrifugal and Propeller Fan

Gas Unit Heaters

Burners are die-formed, corrosion

A factory installed junction box is

resistant aluminized steel, with stainless

steel port protectors. Port protectors

prevent scale or foreign matter from

obstructing the burner ports. Burners

individually removable for ease of

inspection and servicing. Each burner is

provided with an individually adjustable,

manually rotated air shutter adjustment.

provided for all power connections.

Standard units are provided with a 24V

combination single-stage redundant gas

valve, consisting of a combination pilot

solenoid valve, automatic electric gas

valve, pilot filter, pressure regulator, pilot

adjustment and manual shutoff. A flue

vent fan relay and combustion air

proving switch is also provided as

standard. Standard equipment includes

spark-ignited intermittent pilot system

with electronic flame supervision. A 24V

control transformer, high limit and fan

time delay relay are provided.The fan

time delay relay delays the fan start until

the heat exchanger reaches a

General

Units are completely factory assembled,

piped, wired, and test fired. All units are

AGA Certified, 80 percent efficient and

conform with the latest ANSI Standards

for safe and efficient performance. Units

are provided with two-point suspension

hangers on propeller fan unit heaters

and with four-point suspension hangers

on centrifugal fan unit heaters. Units are

available for operation on either natural

or LP (propane) gas. Standard terms and

conditions apply.

Fans

Propeller fan blades are constructed of

aluminum with an aerodynamic contour.

All fans are dynamically balanced for

quiet, efficient operation and supplied

with a protective type fan guard. Rubber-

in-shear isolators provide isolation

between the fan/motor combination and

the unit heater casing.

Casing

predetermined temperature. It also

allows the fan to operate after burner

shutdown, removing residual heat from

the heat exchanger.

Casings are die-formed, 20-gauge

galvanized steel and finished in baked

enamel.The bottom panel is easily

removed to provide service access to the

burners, pilot and orifice. All units

provided with independently adjustable

horizontal louvers with stops to prevent

total closure.

Centrifugal fan is belt driven with

adjustable pitch motor sheave. Motor

and fan are dynamically balanced for

quiet operation.

Electronic Modulating

4-20 mA/0-10VDC Input

Provides modulated heat output. Ignition

is at full fire (100 percent input), and

modulates the gas input from 100

percent to 40 percent rated input.

Centrifugal Unit Motors

Standard motors are 115V, 60 Hz, single

phase, open drip-proof with built-in

thermal overload protection. Optional

230/60/1 motors are available on all

units. Optional 208, 230, 460/60/3 motors

are available on 125 through 400 MBh

units.

Heat Exchanger

Standard heat exchanger construction

consists of seam welded 20-gauge

aluminized steel tubes and 18-gauge

aluminized steel headers.

The modulating gas valve shall operate

in response to a 4-20 mA or a 0-10 VDC

input from an external DDC control.

Flue Vent Fan

All Motors

Flue vent fan provides power venting.

Provided factory assembled to a sealed

flue collection chamber.The flue vent fan

is activated in response to a low voltage

(24V) single-stage thermostat (NOTE:The

thermostat is not included with the gas

control option). A combustion air

All motors are 115V, 60 Hz, single-phase

open drip-proof with built-in thermal

overload protection and permanently

lubricated bearings.

pressure switch is provided as standard

to verify proper powered vent flow prior

to allowing the gas valve to operate.

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Mechanical

Specifications

Factory Installed Options

Field Installed Accessories

Two-Stage Gas Valve

LP (Propane) to Natural Gas Conversion

Package

Provides two stages of heat. Ignition is at

low fire (50 percent of the furnaces rated

input). Requires the use of a two-stage

thermostat.

High Gas Line Pressure Regulator

(Natural gas units only)

Reduces main gas line pressure to a

minimum of seven-inches W.C. Pressure

at the jobsite must be specified.The

regulator is selected to accommodate

that specific pressure.

Heat Exchanger Options

Type 409 Stainless Steel

Heat exchanger tubes and headers are

seam welded 20-gaugeType 409

stainless steel.

Thermostats

Type 321 Stainless Steel

Low voltage room thermostat, single-

stage.

Heat exchanger tubes and headers are

seam welded 20-gaugeType 321

stainless steel.

Low voltage room thermostat, single-

stage with summer/winter switch.

Additional Options

Low voltage duct thermostat, single-

stage.

Type 409 Stainless Steel Burners

Type 409 Stainless Steel Draft Diverter

Totally Enclosed Motor

Low voltage room thermostat, two-

stage.

Low voltage duct thermostat, two-stage.

Orifices for elevations over 2000 feet

Summer/Winter Switch

Universal tamperproof guard for all

room thermostats.

Vertical Louvers

Discharge Nozzles

Y Splitter

30° Downward

60° Downward

90° Downward

Duct Discharge Flange

(Centrifugal fan units only) Provided in

lieu of louvers on units for use with field

ductwork.

OSHA Fan Guards

OSHA fan guards are available as a

factory installed or field installed option.

ConcentricVent Terminals

Vertical Concentric Vent Kit

Kit includes 5” cap with special attached

non-recirculation disc, special 8” cap

with 5” hole and concentric vent box.

Horizontal Concentric Vent Kit

Kit includes 5” cap with special attached

non-recirculation disc, inlet air screen

and concentric vent box.

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Mechanical

Specifications

Venting

Tubular Heat Exchanger

Indoor Gas Unit

The tubular design is AGA/CGA certified

in accordance with

Categories I and III venting

Unit is completely factory assembled,

piped, wired and test fired. Unit is AGA

and CGA certified, over 80 percent

thermal (combustion) efficient.These

propeller type units are provided with

aluminized tubular heat exchanger, in-

shot burner, hot surface pilot ignition,

individually adjustable and removable

louvers, 100 percent baked enamel

finish, 115/60/1 supply voltage,

requirements. Category I enables units

to be vented vertically with either single

or double wall venting material.

Category III allows for horizontal venting

utilizing single wall venting material.

This venting flexibility makes

installation easier and more cost

effective.

removable access door on size 30 to

75 MBh, and hinged access control panel

on 100 to 400 MBh, power vented,

single-stage combination gas valve, two-

stage available on 100 to 400 MBh, 24V

control transformer and 115/60/1 volt fan

motor with internal overload protection.

The size 30 to 90 are available in low

profile design.

Control Accessibility

All controls are easily accessible with

ignition and fan controls located in one

centrally located control panel.The

removable door on size 30 to 75 MBh

and the hinged access door on the 100

400 MBh provide control isolation.

Motor –115V ODP

Motor is 115V, 60 Hz, single phase, open

drip-proof with built-in thermal overload

protection.

Residential Garage Certified

The GTNDR unit heaters are AGA and

CGA certified for installations in

residential garages. With this certification

and the low profile design, these GTNDR

models are ideal for residential garage,

commercial and industrial installations.

Optional Feature

Motor — 115V totally enclosed.

Motor is 115V, 60 Hz, single phase,

totally enclosed with built-in thermal

overload protection.

Tubular Heat Exchanger

Warranty

Heat exchanger construction consists of

20-gauge aluminized steel.The tubular

design provides maximum and uniform

heat transfer.The low pressure drop

enables heated air to be evenly

The heat exchanger, flue collector and

burners are covered by a 10 year

warranty from the date of manufacture.

distributed.The curved, non-welded

serpentine design, experiences less

thermally induced stress making it

highly durable for longer service life.

Cabinet

The cabinet is constructed of 20-gauge

cold rolled steel. All components are

individually electrostatically painted.

Hot Surface Pilot Ignition

This ignition is constructed of shock

resistant ceramic composite hot surface

element.This system does not permit

pilot gas to flow unless the hot surface

element is present and powered.The low

voltage hot surface element lights the

pilot quickly for fast heat delivery. All

wiring is 24V with no line voltage in the

burner area.

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Mechanical

Specifications

Heat Exchanger

Motors

Propeller Fan Gas Unit Heater

Standard heat exchanger construction

consists of seam welded 20-gauge

aluminized steel tubes and 18-gauge

aluminized steel headers.

Standard motors are 115V, 60 Hz, single-

phase, open drip-proof with built-in

thermal overload protection. Optional

230/60/1 motors are available on all

units. Optional 208, 230, 460/60/3 motors

are available on 125 through 400 MBh

units.

Centrifugal Fan Gas Unit

Heater

Indoor Gas Duct Furnace

The heat exchanger, burner and draft

hood assembly carry a non-prorated

warranty to be free from defective

material and workmanship for a period

of 10 years from date of manufacture,

excluding loss due to misuse,

negligence, or corrosion by chemicals

precipitated in the air. (Not available on

duct furnaces.)

General

Units are completely factory assembled,

piped, wired and test fired. All units are

AGA Certified and conform with the

latest ANSI Standards for safe and

efficient performance. Units are provided

with two-point suspension hangers on

propeller fan unit heaters and with four

point suspension hangers on centrifugal

fan unit heaters and duct furnaces. All

units are available for operation on either

natural or LP (propane) gas.

Controls

A factory installed junction box is

provided for all power connections.

Standard units are provided with a

24-volt combination single-stage

automatic gas valve, including main

operating valve and pilot safety shutoff,

pressure regulator, manual main and

pilot shutoff valve, and adjustable pilot

valve. Gas valve is suitable to a

maximum inlet pressure of 0.5 psi (14-

inch W.C.) on natural gas. A 24V control

transformer, a spill (blocked vent) switch,

high limit and fan time delay relay

(optional on duct furnaces) are provided.

The fan time delay relay delays the fan

start until the heat exchanger reaches a

predetermined temperature. It also

allows the fan to operate after burner

shutdown, removing residual heat from

the heat exchanger.

Draft Diverter

Standard draft diverter construction is

corrosion resistant aluminized steel.

Casing

Burners

Casings are die-formed, 20-gauge

galvanized steel and finished in baked

enamel.The bottom panel is easily

removed to provide service access to the

burners, pilot and orifices.The pilot is

also accessible through a side panel

access plate.

Burners are die-formed, corrosion

resistant aluminized steel, with stainless

steel port protectors. Port protectors

prevent scale or foreign matter from

obstructing the burner ports. Burners are

individually removable for ease of

inspection and servicing. Each burner is

provided with an individually adjustable,

manually rotated air shutter adjustment.

Air shutter adjustment is fixed on duct

furnaces when the side access burner

drawer is supplied.

On duct furnaces the high limit switch is

accessible through a side panel access.

Duct discharge flanges for simple

ductwork connection are provided.

All unit heaters are provided with

independently adjustable horizontal

louvers with stops to prevent total

closure.

Fans

Propeller fan blades are constructed of

aluminum with an aerodynamic contour.

All fans are dynamically balanced for

quiet, efficient operation and supplied

with a protective type fan guard. Rubber-

in-shear isolators provide isolation

between the fan/motor combination and

the unit heater casing.

Centrifugal fan is belt driven with

adjustable pitch motor sheave. Fan is

dynamically balanced for quiet

operation.

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Mechanical

Specifications

Electronic Modulating

4-20 mA/0-10VDC Input

Provides modulated heat output. Ignition

is at full fire (100 percent input), and

modulates the gas input from 100

percent to 40 percent rated input.

Factory Installed Options

Control Options

Field Installed Accessories

Natural to LP (Propane) Gas Conversion

Package (Standing Pilot Only)

Hydraulic Modulating Gas Valve

Provides modulated heat output. Ignition

is at low fire (50 percent input) and

discharge temperature sensing bulb

located in the air stream modulates the

gas input from 50 percent to 100 percent

rated input. Provided with an automatic

electric valve in series which cycles the

unit in response to a low voltage single-

stage thermostat (thermostat not

included). (Not available on 30-75 MBh

units.)

LP (Propane) to Natural Gas Conversion

Package

The modulating gas valve shall operate

in response to a 4-20 mA or a 0-10 VDC

input from an external DDC control.

Flue Vent Fan

Flue vent fan provides power venting.

Provided with all fixtures for field

mounting and wiring, the flue vent fan is

activated in response to a single stage

thermostat. A centrifugal switch in the

flue vent in turn activates the automatic

electric gas valve.

Heat Exchanger Options

Type 409 Stainless Steel

Heat exchanger tubes and headers are

seam welded 20-gaugeType 409

stainless steel.

High Gas Line Pressure Regulator

Reduces main gas line pressure to a

minimum of seven-inches W.C. Pressure

at the jobsite must be specified.The

regulator is selected to accommodate

that specific pressure. (Natural gas units

only.)

Intermittent Pilot Ignition

Type 321 Stainless Steel

Solid state ignition control system ignites

the pilot by spark during each cycle of

operation.When pilot flame is proven,

main burner valve opens to allow gas

flow to burners. Pilot and burners are

extinguished during off cycle. Required

on California units.

Heat exchanger tubes and headers are

seam welded 20-gaugeType 321

stainless steel (100-400 MBh only).

Additional Options

Type 409 Stainless Steel Burners

(Not available on 30-75 MBh units.)

Discharge Nozzles

“Y” Splitter (100-400 MBh only)

30° Downward (100-400 MBh only)

60° Downward (100-400 MBh only)

90° Downward (100-400 MBh only)

Two-Stage Gas Valve

Orifices for Elevations Over 2000 Feet

Type 409 Stainless Steel Draft Diverter

(Not available on 30-75 MBh units.)

Provides two stages of heat. Ignition is at

low fire (50 percent of the furnace’s rated

input). Requires the use of a

Summer/Winter Switch

Drain Pan (Duct Furnace Only)

Recommended for use with installations

on the downstream side of a cooling

coil.

two-stage thermostat.

Vertical Louvers

Hydraulic Modulating Gas Valve with

Bypass (N/A on 30-75 MBh units)

An additional electric valve in parallel

bypasses the hydraulic modulating valve,

overriding the discharge temperature

sensing bulb, allowing full fire. Requires

the use of a separate thermostat to

control the electric valve.

Horizontal Louvers (Duct furnace only)

Duct Discharge Flange

Thermostats

Provided in lieu of louvers on units for

use with field ductwork (Centrifugal units

only)

Low voltage room thermostat single-

stage.

Totally Enclosed Motor

Low voltage room thermostat, single-

stage with summer/winter switch.

Side Access Burner Drawer (Duct

Furnace Only)

Allows entire burner drawer to slide out

from the side of the unit for service or

inspection.

Electronic Modulating Gas Valve (Natural

Gas Units Only) (N/A on 30-75 MBh

units)

Low voltage room thermostat,

two-stage.

Universal tamperproof guard for all

room thermostats.

Provides modulated heat output. Ignition

is at full fire (100 percent input), and

modulates the gas input from 100 to 50

percent rated input. Available for use

with room thermostat or duct thermostat

with remote setpoint adjustment. Duct

thermostat available with optional

override room thermostat which causes

the unit to go to full fire when the room

temperature falls below the override

room thermostat.

Fan Time Delay Relay —(Duct Furnace

Only)

Low voltage duct thermostat, single-

stage.

The fan time delay relay delays the fan

start until the heat exchanger reaches a

predetermined temperature. It also

allows the fan to operate after burner

shutdown, removing the residual heat

from the heat exchanger

Low voltage duct thermostat,

two-stage.

Room thermostat, electronic modulating

control.

Duct thermostat, electronic modulating

control.

(Recommended on applications that

require intermittent fan.)

Override room thermostat, for use with

duct thermostat and electronic

modulating control.

One-inch throwaway filters (Centrifugal

with enclosure only)

One-inch permanent filters (Centrifugal

with enclosure only)

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Mechanical

Specifications

control transformer, high limit and fan

time delay relay are provided.The fan

time delay relay delays the fan start until

the heat exchanger reaches a

Duct Discharge Flange

Separated Combustion Duct

Furnaces

(Centrifugal fan units only) Provided in

lieu of louvers on units for use with field

ductwork.

General

predetermined temperature. It also

allows the fan to operate after burner

shutdown, removing residual heat from

the heat exchanger.

Units are completely factory assembled,

piped, wired, and test fired. All units are

AGA Certified, 80 percent efficient and

conform with the latest ANSI Standards

for safe and efficient performance. Units

are provided with two-point suspension

hangers on propeller fan unit heaters

and with four-point suspension hangers

on centrifugal fan unit heaters. Units are

available for operation on either natural

or LP (propane) gas. Standard terms and

conditions apply.

Field Installed Accessories

LP (Propane) to Natural Gas Conversion

Package

Electronic Modulating

4-20 mA/0-10VDC Input

Provides modulated heat output. Ignition

is at full fire (100 percent input), and

modulates the gas input from 100

percent to 40 percent rated input.

High Gas Line Pressure Regulator

(Natural gas units only) Reduces main

gas line pressure to a minimum of

seven-inches W.C. Pressure at the jobsite

must be specified.The regulator is

selected to accommodate that specific

pressure.

The modulating gas valve shall operate

in response to a 4-20 mA or a 0-10 VDC

input from an external DDC control.

Thermostats

Casing

Low voltage room thermostat, single-

stage.

Low voltage room thermostat, single-

stage with summer/winter switch.

Casings are die-formed, 20-gauge

galvanized steel and finished in baked

enamel.The bottom panel is easily

removed to provide service access to the

burners, pilot and orifice. All units

provided with independently adjustable

horizontal louvers with stops to prevent

total closure.

Flue Vent Fan

Flue vent fan provides power venting.

Provided factory assembled to a sealed

flue collection chamber.The flue vent fan

is activated in response to a low voltage

(24V) single-stage thermostat (NOTE:The

thermostat is not included with the gas

control option). A combustion air

pressure switch is provided as standard

to verify proper powered vent flow prior

to allowing the gas valve to operate.

Low voltage duct thermostat, single-

stage.

Low voltage room thermostat, two-

stage.

Low voltage duct thermostat, two-stage.

Heat Exchanger

Universal tamperproof guard for all

room thermostats.

Standard heat exchanger construction

consists of seam welded 20-gauge

aluminized steel tubes and 18-gauge

aluminized steel headers.

Factory Installed Options

Two-Stage Gas Valve

Provides two stages of heat. Ignition is at

low fire (50 percent of the furnace’s rated

input). Requires the use of a two-stage

thermostat.

Discharge Nozzles

Y Splitter

Burners

30° Downward

60° Downward

90° Downward

ConcentricVent Terminals

Burners are die-formed, corrosion

resistant aluminized steel, with stainless

steel port protectors. Port protectors

prevent scale or foreign matter from

obstructing the burner ports. Burners

individually removable for ease of

inspection and servicing. Each burner is

provided with an individually adjustable,

manually rotated air shutter adjustment.

Heat Exchanger Options

Type 409 Stainless Steel

Vertical Concentric Vent Kit

Heat exchanger tubes and headers are

seam welded 20-gaugeType 409

stainless steel.

Kit includes 5” cap with special attached

non-recirculation disc, special 8” cap

with 5” hole and concentric vent box.

Type 321 Stainless Steel

Horizontal Concentric Vent Kit

Controls

Heat exchanger tubes and headers are

seam welded 20-gaugeType 321

stainless steel.

Kit includes 5” cap with special attached

non-recirculation disc, inlet air screen

and concentric vent box.

A factory installed junction box is

provided for all power connections.

Standard units are provided with a 24V

combination single-stage redundant gas

valve, consisting of a combination pilot

solenoid valve, automatic electric gas

valve, pilot filter, pressure regulator, pilot

adjustment and manual shutoff. A flue

vent fan relay and combustion air

Additional Options

Type 409 Stainless Steel Burners

Type 409 Stainless Steel Draft Diverter

Totally Enclosed Motor (Centrifugal fan

units only)

proving switch is also provided as

Orifices for elevations over 2000 feet

Summer/Winter Switch

Vertical Louvers

standard. Standard equipment includes

spark-ignited intermittent pilot system

with electronic flame supervision. A 24V

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Mechanical

Specifications

24-volt combination single-stage

redundant gas valve, consisting of a

combination pilot solenoid valve,

automatic electric gas valve, pilot filter,

pressure regulator, pilot adjustment and

manual shutoff. A flue vent fan relay and

combustion air proving switch is also

provided as standard. Standard

equipment includes spark-ignited

intermittent pilot system with electronic

flame supervision. A 24V control

transformer and a high limit are

provided.

Electronic Modulating Gas Valve (Natural

Gas Units Only)

Provides modulated heat output. Ignition

is at full fire (100 percent input), and

modulates the gas input from

100 to 50 percent rated input. Available

for use with room thermostat or duct

thermostat with remote setpoint

adjustment. Duct thermostat available

with optional override room thermostat

which causes the unit to go to full fire

when the room temperature falls below

the override room thermostat.

High Efficiency Indoor Gas

Duct Furnaces

General

Units are completely factory assembled,

piped, wired, and test fired. All units are

AGA Certified and conform with the

latest ANSI Standards for safe and

efficient performance. Units are provided

with four point suspension hangers, and

are available for operation on either

natural or LP (propane) gas.

Casing

Flue Vent Fan

Electronic Modulating

Casings are die-formed, 20-gauge

galvanized steel and finished in baked

enamel.The bottom panel is easily

removed to provide access to the

burners, pilot and orifices.The pilot is

also accessible through a side panel

access plate.The high limit switch is

accessible through a side panel access.

Duct discharge flanges for simple

ductwork connection are provided.

4-20 mA/0-10VDC Input

Flue vent fan is factory assembled to a

sealed flue collection chamber and

provides power venting.The flue vent

fan is activated in response to a low

voltage (24V) single-stage thermostat. A

combustion air pressure switch is

provided as standard to verify proper

powered vent flow prior to allowing the

gas valve to operate.

Provides modulated heat output. Ignition

is at full fire (100 percent input), and

modulates the gas input from 100

percent to 40 percent rated input.

The modulating gas valve shall operate

in response to a 4-20 mA or a 0-10 VDC

input from an external DDC control.

Heat Exchanger Options

Control Options

Type 409 Stainless Steel

Heat Exchanger

Two-Stage Gas Valve

Heat exchanger tubes and headers are

seam welded 20-gaugeType 409

stainless steel

Standard heat exchanger construction

consists of seam welded 20-gauge

aluminized steel tubes and 18-gauge

aluminized steel headers.

Provides two stages of heat. Ignition is at

low fire (50 percent of the furnace’s rated

input). Requires the use of a two-stage

thermostat. (Thermostat not included.)

Type 321 Stainless Steel

Heat exchanger tubes and headers are

seam welded 20-gaugeType 321

stainless steel

Burners

Hydraulic Modulating Gas Valve

Provides modulated heat output. Ignition

is at low fire (50 percent input) and

discharge temperature sensing bulb

located in the airstream modulates the

gas input from

100 percent to 50 percent rated input.

Provided with an automatic electric valve

in series which cycles the unit in

response to a low voltage single-stage

thermostat. (Thermostat not included.)

Burners are die-formed, corrosion

resistant aluminized steel, with stainless

steel port protectors. Port protectors

prevent foreign matter from obstructing

the burner ports. Burners individually

removable for ease of inspection and

servicing. Each burner is provided with

an individually adjustable, manually

rotated air shutter adjustment. Air shutter

adjustment is fixed when side access

burner drawer is supplied.

Additional Options

Type 409 Stainless Steel Burners

Orifices for Elevations over 2000 feet

Type 409 Stainless Steel Draft Diverter

Summer/Winter Switch

Horizontal Louvers

Horizontal and Vertical Louvers

Hydraulic Modulating Gas Valve with

Bypass

Side Access Burner Drawer

Allows entire burner drawer to slide out

from the side of the unit for service or

inspection.

Controls

An additional electric valve in parallel

bypasses the hydraulic modulating

valve, overriding the discharge

temperature sensing bulb, allowing full

fire. Requires the use of a separate

thermostat to control the electric valve.

A factory installed junction box is

provided for all power connections.

Standards units are provided with a

FanTime Delay Relay

The fan time delay relay delays the fan

start until the heat exchanger reaches a

predetermined temperature. It also

allows the fan to operate after burner

shutdown, removing the residual heat

from the heat exchanger.

(Recommended on applications that

require intermittent fan)

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Mechanical

Specifications

Field Installed Accessories

Horizontal Blower Assembly

Factory Installed Options

Natural to LP (Propane) Gas Conversion

Package (Standing Pilot Only)

General

Insulation

Units are completely factory assembled,

and have four-point suspension hangers

and filter racks as standard.

Blower assembly and transition are

insulated with fire-resistant, odorless,

mat-faced one-inch glass fiber material.

LP (Propane) to Natural Gas Conversion

Package

High Gas Line Pressure Regulator

Reduces main gas line pressure to a

minimum of seven-inches W.C. Pressure

at the jobsite must be specified.The

regulator is selected to accommodate

that specific pressure.

Casing

Floor Mounting Legs

Casings are 18-gauge galvanized steel

with baked enamel finish. Side panels

are removable for easy servicing and

motor maintenance. Duct flanges are

provided for simple ductwork

Legs allow floor mounting of the blower

assembly.

Totally Enclosed Motor

Field Installed Accessories

Optional Filters

(One-Inch Permanent Standard)

Discharge Nozzles

“Y” Splitter

30° Downward

60° Downward

90° Downward

connection. Standard filters are one-inch

permanent washable type.

Motors

One-inch throwaway

One-inch permanent

Factory mounted motors are open drip-

proof, 115, 230/60/1 or 208, 230, 460/60/3

with built-in thermal overload protection.

Drain Pan

Transition

Recommended for use with installations

on the downstream side of a cooling

coil.

When used with a duct furnace, a sheet

metal transition is supplied to connect

the blower assembly to the duct furnace.

Fans

Centrifugal fan is belt driven with

adjustable pitch motor sheave. Fan is

dynamically balanced for quiet

operation.

Thermostats

Low voltage room thermostat, single-

stage

Low voltage room thermostat, two-stage

Low voltage duct thermostat, single-

stage

Low voltage duct thermostat, two-stage

Universal tamperproof guard for all

room thermostats

Low voltage room thermostat, single-

stage with summer/winter switch

Room thermostat, electronic modulating

control

Duct thermostat, electronic modulating

control

Override room thermostat, for use with

duct thermostat and electronic

modulating control.

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Literature Order Number

File Number

UH-PRC002-EN

PL-UN-UH-000-PRC002-2-01

UH-PRC002-EN 6/00

Inland - LaCrosse

Supersedes

The Trane Com pany

An Am erican Standard Com pany

w w w .trane.com

Stocking Location

For more information contact your local

distributor (dealer), local district office, or

e-mail us at comfort@trane.com

Since The Trane Company has a policy of continuous product and product data improvement, it reserves the

right to change design and specifications without notice.

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