Trane Air Conditioner RT PRC007 EN User Manual

Packaged Rooftop

Air Conditioners

27 ½ to 50Ton - 60 Hz

Voyager™ Commercial

October 2001

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Contents

Introduction

Features and Benefits

Application Considerations

Selection Procedure

Model Number Description

General Data

Performance Data

Performance Adjustment Factors

Controls

Electric Power

Dimension and Weights

Mechanical Specifications

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Features and

Benefits

Standard Features

• Factory installed and commissioned

Optional Features

• Electric heat

microelectronic controls

• Natural gas heat

• LP gas heat (kit only)

• Power Exhaust

• Barometric Relief

• Trane 3-D™ Scroll Compressors

• Dedicated downflow or horizontal

configuration

• CV or VAV control

• FROSTAT™ coil frost protection on all

units

• Supply air overpressurization

protection on VAV units

• Supply airflow proving

• Emergency stop input

• High Efficiency 2”Throwaway Filters

• High Efficiency 4”Throwaway Filters

• High Efficiency supply fan motors

• Manual fresh air damper

• Economizer with dry bulb control

• Economizer with reference enthalpy

control

• Compressor lead-lag

• Economizer with differential

(comparative) enthalpy control

• Inlet guide vanes on VAV units

• Variable frequency drives on VAV

units (with or without bypass)

• Service Valves

• Through-the-base electrical provision

• Factory mounted disconnect with

external handle (non-fused)

• Factory powered 15A GFI

convenience outlet

• Occupied-Unoccupied switching

• Timed override activation

• FC supply fans

• UL and CSA listing on standard options

• Two inch standard efficiency filters

• Finish exceeds salt spray requirements

of ASTM B117

• Sloped condensate drain pan

• Field powered 15A GFI convenience

outlet

• Integrated Comfort™ System Control

Option

• Ventilation Override

• Hinged Service Access

• Factory installed condenser coil

guards

• Black epoxy coated condenser coil

• Sloped stainless steel evaporator coil

drain pans

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Features and

Benefits

Trane 3-D^®Scroll Compressor

Simple Design with 70% Fewer Parts

Proven Design Through Testing and

Research

than 400,000 hours of laboratory testing

and field operation.This work combined

with over 25 patents makesTrane the

worldwide leader in air conditioning

scroll compressor technology.

With over twenty years of development

and testing,Trane 3-D Scroll

compressors have undergone more

Fewer parts than an equal capacity

reciprocating compressor means

significant reliability and efficiency

benefits.The single orbiting scroll

eliminates the need for pistons,

connecting rods, wrist pins and valves.

Fewer parts lead to increased reliability.

Fewer moving parts, less rotating mass

and less internal friction means greater

efficiency than reciprocating

compressors.

TheTrane 3-D Scroll provides important

reliability and efficiency benefits.The 3-D

Scroll allows the orbiting scrolls to touch

in all three dimensions, forming a

completely enclosed compression

chamber which leads to increased

efficiency. In addition, the orbiting scrolls

only touch with enough force to create a

seal; there is no wear between the scroll

plates.The fixed and orbiting scrolls are

made of high strength cast iron which

results in less thermal distortion, less

leakage, and higher efficiencies. The

most outstanding feature of the 3-D

Scroll compressor is that slugging will

not cause failure. In a reciprocating

compressor, however, the liquid or dirt

can cause serious damage.

Low Torque Variation

The 3-D Scroll compressor has a very

smooth compression cycle; torque

variations are only 30 percent of that

produced by a reciprocating compressor.

This means that the scroll compressor

imposes very little stress on the motor

resulting in greater reliability. Low torque

variation reduces noise and vibration.

Suction Gas Cooled Motor

Compressor motor efficiency and

reliability is further optimized with the

latest scroll design. Cool suction gas

keeps the motor cooler for longer life and

better efficiency.

One of two matched scroll plates —

the distinguishing feature of the scroll

compressor.

Chart illustrates low torque variation of

3-D Scroll compressor vs

reciprocating compressor.

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Features and

Benefits

Quality and Reliability

Forced Combustion Blower

Negative Pressure Gas Valve

Hot Surface Ignitor

Drum and Tube Heat Exchanger

Micro Controls

The negative pressure gas valve will not

allow gas flow unless the combustion

blower is operating.This is one of our

unique safety features.

The drum and tube heat exchanger is

designed for increased efficiency and

reliability and has utilized improved

technology incorporated in the large roof

top commercial units for almost

20 years.

The Micro provides unit control for

heating, cooling and ventilating utilizing

input from sensors that measure outdoor

and indoor temperature.

The forced combustion blower supplies

pre-mixed fuel through a single stainless

steel burner screen into a sealed drum

where ignition takes place. It is more

reliable to operate and maintain than a

multiple burner system.

Quality and Reliability are enhanced

through the use of time-tested micro-

processor controls and logic.

The heat exchanger is manufactured

using aluminized steel with stainless

steel components for maximum

durability.The requirement for cycle

testing of heat exchangers is 10,000

cycles by ANSI Z21.47.This is the

standard required by both UL and AGA

for cycle test requirements.Trane

requires the design to be tested to 2¹/

times this current standard.The drum²

and tube design has been tested and

passed over 150,000 cycles which is over

15 times the current ANSI cycling

requirements.

The Micro:

• prevents the unit from short cycling,

considerably improving

compressor life.

• ensures that the compressor will run

for a specific amount of time which

allows oil to return for better

lubrication, enhancing the reliability

of the commercial compressor.

The hot surface ignitor is a gas ignition

device which doubles as a safety device

utilizing a continuous test to prove the

flame.The design is cycle tested at the

factory for quality and reliability.

All the gas/electric rooftops exceed all

California seasonal efficiency

requirements.They also perform better

than required to meet the California NOx

emission requirements.

The Voyager with the Micro reduces the

number of components required to

operate the unit, thereby reducing

possibilities for component failure.

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Features and

Benefits

Ease of Installation

FC Fans with Inlet Guide Vanes

Contractors look for lower installation

(jobsite) costs.Voyager’s conversionless

units provide many time and money

saving features.

Trane’s forward-curved fans with inlet

guide vanes pre-rotate the air in the

direction of the fan wheel, decreasing

static pressure and horsepower,

essentially unloading the fan wheel.The

unloading characteristics of aTrane FC

fan with inlet guide vanes result in

superior part load performance.

Conversionless Units

The dedicated design units (either

downflow or horizontal) require no panel

removal or alteration time to convert in

the field — a major cost savings during

installation.

Improved Airflow

U-shaped airflow allows for improved

static capabilities.The need for high static

motor conversion is minimized and time

isn’t spent changing to high static

oversized motors.

Excellent Part-Load Efficiency

The Scroll compressor’s unique design

allows it to be applied in a passive

parallel manifolded piping scheme,

something that a “recip” just doesn’t do

very well.

Single Point Power

A single electrical connection powers the

unit.

When the unit begins stage back at part

load it still has the full area and circuitry

of its evaporator and condenser coils

available to transfer heat. In simple

terms this means superior part-load

efficiencies (IPLV) and lower unit

operating costs.

Micro™

The function of the Micro replaces the

need for field installed anti-shortcycle

timer and time delay relays.The Micro

ensures that these controls are integral

to the unit.The contractor no longer has

to purchase these controls as options

and pay to install them.

Rigorous Testing

All ofVoyager’s designs were rigorously

rain tested at the factory to ensure water

integrity.

The wiring of the low voltage

connections to the unit and the zone

sensors is as easy as 1-1, 2-2, and 3-3.

This simplified system makes it easier

for the installer to wire.

Actual shipping tests are performed to

determine packaging requirements.

Units are test shipped around the

country. Factory shake and drop tested

as part of the package design process to

help assure that the unit will arrive at

your job site in top condition.

Rigging tests include lifting a unit into

the air and letting it drop one foot,

assuring that the lifting lugs and rails

hold up under stress.

We perform a 100% coil leak test at the

factory.The evaporator and condenser

coils are leak tested at 200 psig and

pressure tested to 450 psig.

All parts are inspected at the point of

final assembly. Sub-standard parts are

identified and rejected immediately.

Every unit receives a 100% unit run test

before leaving the production line to

make sure it lives up to rigorousTrane

requirements.

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Features and

Benefits

Easy Access Low Voltage Terminal Board

Easy to Service

Voyager’s Low VoltageTerminal Board is

external to the electrical control cabinet.

It is extremely easy to locate and attach

the thermostat wire.This is another cost

and time-saving installation feature.

Because today’s owners are very cost-

conscious when it comes to service and

maintenance, theTrane Voyager was

designed with direct input from service

contractors.This valuable information

helped to design a product that would

get the serviceman off the job quicker

and save the owner money. Voyager

does this by offering:

Value

Low Ambient Cooling

AllVoyager Commercial units have

cooling capabilities down to 0 F as

standard.

A Simpler Design

The Voyager design uses fewer parts

than previous units. Since it is simpler in

design, it is easier to diagnose.

Power Exhaust Option

Provides exhaust of the return air when

using an economizer to maintain proper

building pressurization. Great for

relieving most building

Micro

The Micro requires no special tools to

run the Voyager unit through its paces.

Simply place a jumper betweenTest 1

andTest 2 terminals on the Low Voltage

Terminal Board and the unit will walk

through its operational steps

automatically.

—The unit automatically returns

control to the zone sensor after

stepping through the test mode a

single time, even if the jumper is

left on the unit.

overpressurization problems.

Micro Benefits

The Micro in the Voyager units has built-

in anti-short-cycle timer, time delay relay

and minimum “on” time controls.These

controls are functions of the Micro and

are factory tested to assure proper

operation.

The Micro softens electrical “spikes” by

staging on fans, compressors and

heaters.

As long as the unit has power and the

“system on” LED is lit, the Micro is

operational.The light indicates that the

Micro is functioning properly.

Horizontal Discharge with

Power Exhaust Option

Intelligent Fallback is a benefit to the

building occupant. If a component goes

astray, the unit will continue to operate

at predetermined temperature setpoint.

The Micro features expanded diagnostic

capabilities when utilized withTrane’s

Integrated Comfort™ Systems.

Intelligent Anticipation is a standard

feature of the Micro. It functions

constantly as the Micro and zone sensor

work together in harmony to provide

tighter comfort control than conventional

electro-mechanical thermostats.

Some Zone Sensor options have central

control panel lights which indicate the

mode the unit is in and possible

diagnostic information (dirty filters for

example).

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Features and

Benefits

VariTrac

Downflow and Horizontal Economizers

Trane’s changeover VAV System for light

commercial applications is also

available. Coupled with Voyager

Commercial, it provides the latest in

technological advances for comfort

management systems and can allow

thermostat control in every zone served

by VariTrac™.

The economizers come with three

control options dry bulb, enthalpy and

differential enthalpy. (Photo above

shows the three fresh air hoods on the

Horizontal Discharge Configuration).

VariTrac^®

Central

Control Panel

Trane Communication Interface (TCI)

Available factory or field installed.This

module when applied with the Micro

easily interfaces withTrane’s Integrated

Comfort™ System.

Variable Frequency Drives (VFD)

Variable Frequency Drives are factory

installed and tested to provide supply fan

motor speed modulation.VFD’s, as

compared to inlet guide vanes or

discharge dampers, are quieter, more

efficient, and are eligible for utility

rebates.The VFD’s are available with or

without a bypass option. Bypass control

will simply provide full nominal airflow

in the event of drive failure.

TIME

CLOCK

INPUT/

STATUS

EDIT

PANEL

TERMINAL

Trane factory built roof curbs

Available for all units.

One of Our Finest Assets

Trane Commercial Sales Engineers are a

support group that can assist you with:

— Product

— Application

— Service

—Training

— Special Applications

— Specifications

— Computer Programs and more

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Application

Considerations

Exhaust Air Options

amounts of outdoor air into the building.

If, however, building pressure is not of a

critical nature, the non-modulating

exhaust fan may be sized for more than

50 percent of design supply airflow.

ConsultTable PD-16 for specific exhaust

fan capabilities with Voyager Commercial

units.

When is it necessary to provide building

exhaust?

Use the actual cfm and the corrected

static pressure to determine the fan rpm

and bhp from the rooftop performance

tables or curves.

Whenever an outdoor air economizer is

used, a building generally requires an

exhaust system.The purpose of the

exhaust system is to exhaust the proper

amount of air to prevent over or under-

pressurization of the building.

The fan rpm is correct as selected.

Barometric Relief Dampers

Barometric relief dampers consist of

gravity dampers which open with

increased building pressure. As the

building pressure increases, the pressure

in the unit return section also increases,

opening the dampers and relieving air.

Barometric relief may be used to provide

relief for single story buildings with no

return ductwork and exhaust

Bhp must be multiplied by the air density

ratio to obtain the actual operating bhp.

A building may have all or part of its

exhaust system in the rooftop unit. Often,

a building provides exhaust external to

the air conditioning equipment.This

external exhaust must be considered

when selecting the rooftop exhaust

system.

In order to better illustrate this procedure,

the following example is used:

Consider a 30-ton rooftop unit that is to

deliver 11,000 actual cfm at 1.50 inches

total static pressure (tsp), 55 F leaving air

temperature, at an elevation of 5,000 ft.

Voyager Commercial rooftop units offer

two types of exhaust systems:

requirements less than 25 percent.

Altitude Corrections

From Figure PD-1, the air density ratio is

0.86.

Power exhaust fan.

The rooftop performance tables and

curves of this catalog are based on

standard air (.075 lbs/ft). If the rooftop

airflow requirements are at other than

standard conditions (sea level), an air

density correction is needed to project

accurate unit performance.

Barometric relief dampers.

Application Recommendations

Power Exhaust Fan

Tsp=1.50 inches/0.86=1.74 inches tsp.

From the performance tables: a 30-ton

rooftop will deliver 11,000 cfm at 1.74

inches tsp at 668 rpm and 6.93 bhp.

The exhaust fan option is a dual,

nonmodulating exhaust fan with

Figure PD-1 shows the air density ratio at

various temperatures and elevations.

Trane rooftops are designed to operate

between 40 and 90 degrees Fahrenheit

leaving air temperature.

approximately half the air-moving

capabilities of the supply fan system.The

experience ofTheTrane Company is that

a non-modulating exhaust fan selected

for 40 to 50 percent of nominal supply

cfm can be applied successfully.

The rpm is correct as selected — 668

rpm.

The procedure to use when selecting a

supply or exhaust fan on a rooftop for

elevations and temperatures other than

standard is as follows:

Bhp = 6.93 x 0.86 = 5.96 .

The power exhaust fan generally should

not be selected for more than 40 to 50

percent of design supply airflow. Since it

is an on/off nonmodulating fan, it does

not vary exhaust cfm with the amount of

outside air entering the building.

Therefore, if selected for more than 40 to

50 percent of supply airflow, the building

may become underpressurized when

economizer operation is allowing lesser

Compressor MBh, SHR, and kw should

be calculated at standard and then

converted to actual using the correction

factors inTable PD-2. Apply these factors

to the capacities selected at standard cfm

so as to correct for the reduced mass

flow rate across the condenser.

First, determine the air density ratio

using Figure PD-1.

Divide the static pressure at the

nonstandard condition by the air density

ratio to obtain the corrected static

pressure.

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Application

Considerations

Heat selections other than gas heat will

not be affected by altitude. Nominal gas

capacity (output) should be multiplied by

the factors given inTable PD-3 before

calculating the heating supply air

temperature.

When two or more units are to be placed

side by side, the distance between the

units should be increased to 150 percent

of the recommended single unit

clearance.The units should also be

staggered for two reasons:

If several units are to be placed on one

span, they should be staggered to

reduce deflection over that span.

It is impossible to totally quantify the

effect of building structure on sound

transmission, since this depends on the

response of the roof and building

members to the sound and vibration of

the unit components. However, the

guidelines listed above are experience-

proven guidelines which will help reduce

sound transmissions.

Acoustical Considerations

Proper placement of rooftops is critical to

reducing transmitted sound levels to the

building.The ideal time to make

provisions to reduce sound

transmissions is during the design

phase. And the most economical means

of avoiding an acoustical problem is to

place the rooftop(s) away from

acoustically critical areas. If possible,

rooftops should not be located directly

above areas such as: offices, conference

rooms, executive office areas and

classrooms. Instead, ideal locations

might be over corridors, utility rooms,

toilets or other areas where higher

sound levels directly below the unit(s)

are acceptable.

To reduce span deflection if more than

one unit is placed on a single span.

Reducing deflection discourages sound

transmission.

To assure proper diffusion of exhaust air

before contact with the outside air intake

of adjacent unit.

Clearance Requirements

The recommended clearances identified

with unit dimensions should be

maintained to assure adequate

serviceability, maximum capacity and

peak operating efficiency. A reduction in

unit clearance could result in condenser

coil starvation or warm condenser air

recirculation. If the clearances shown are

not possible on a particular job, consider

the following:

Duct Design

It is important to note that the rated

capacities of the rooftop can be met only

if the rooftop is properly installed in the

field. A well designed duct system is

essential in meeting these capacities.

The satisfactory distribution of air

throughout the system requires that

there be an unrestricted and uniform

airflow from the rooftop discharge duct.

This discharge section should be straight

for at least several duct diameters to

allow the conversion of fan energy from

velocity pressure to static pressure.

Several basic guidelines for unit

placement should be followed to

minimize sound transmission through

the building structure:

Do the clearances available allow for

major service work such as changing

compressors or coils?

Do the clearances available allow for

proper outside air intake, exhaust air

removal and condenser airflow?

Never cantilever the compressor end of

the unit. A structural cross member must

support this end of the unit.

However, when job conditions dictate

elbows be installed near the rooftop

outlet, the loss of capacity and static

pressure may be reduced through the

use of guide vanes and proper direction

of the bend in the elbow.The high

velocity side of the rooftop outlet should

be directed at the outside radius of the

elbow rather than the inside.

If screening around the unit is being

used, is there a possibility of air

recirculation from the exhaust to the

outside air intake or from condenser

exhaust to condenser intake?

Locate the unit’s center of gravity which

is close to, or over, a column or main

support beam.

Actual clearances which appear

inadequate should be reviewed with a

localTrane sales engineer.

If the roof structure is very light, roof

joists must be replaced by a structural

shape in the critical areas described

above.

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Selection

Procedure

Selection ofTrane commercial air

conditioners is divided into five basic

areas:

A psychrometric chart can be used to

more accurately determine the mixture

temperature to the evaporator coil.

2” Hi-efficiency throwaway filters.

Step 4 — Determine total required unit

cooling capacity:

Exhaust fan.

Cooling capacity

Required capacity = total peak load +

O.A. load + supply air fan motor heat.

Economizer cycle.

Heating capacity

From Figure SP-1, the supply air fan

motor heat for 7.27 bhp = 20.6 MBh.

Step 1 — A summation of the peak

cooling load and the outside air

Air delivery

ventilation load shows: 27.75 tons + 1.52

tons = 29.27 required unit capacity. From

Table 18-2, 30-ton unit capacity at 80 DB/

67 WB, 95 F entering the condenser and

Capacity = 321 + 18.23 + 20.6 =

359.8 MBh (30 tons)

Step 5 — Determine unit capacity:

Unit electrical requirements

12,000 total peak supply cfm, is 30.0 tons. From Table PD-4 unit capacity at 81.5 DB.

Thus, a nominal 30-ton unit is selected.

67WB entering the evaporator, 12000

supply air cfm, 95 F entering the

condenser is 361 MBh (30.1 tons) 279

sensible MBh.

Unit designation

Step 2 — Having selected a nominal 30-

ton unit, the supply fan and exhaust fan

motor bhp must be determined.

Factors Used In Unit Cooling Selection:

Step 6 — Determine leaving air

temperature:

Summer design conditions — 95 DB/

Supply Air Fan:

76 WB, 95 F entering air to condenser.

Determine unit static pressure at design

supply cfm:

Unit sensible heat capacity, corrected for

supply air fan motor heat 279 - 20.6 =

258.4 MBh.

External static pressure

Heat exchanger

(Table PD-14)

1.20 inches

.14 inches

Summer room design conditions —

76 DB/66WB.

Supply air dry bulb temperature

difference = 258.4 MBh ÷ (1.085 x 12,000

cfm) = 19.8 F.

Total peak cooling load — 321 MBh (27.75

tons).

High efficiency filter 2”

(Table PD-14)

.09 inches

.076 inches

1.50 inches

Supply air dry bulb: 81.5 - 19.8 = 61.7.

Unit enthalpy difference = 361 ÷ (4.5 x

12,000) = 6.7

Economizer

Total peak supply cfm — 12,000 cfm.

(Table PD-14)

Btu/lb leaving enthalpy = h (ent WB) =

31.62

Unit total static pressure

External static pressure — 1.0 inches.

Using total cfm of 12,000 and total

static pressure of 1.50 inches, enterTable

PD-12.Table PD-12 shows 7.27 bhp with

652 rpm.

Leaving enthalpy = 31.62 Btu/lb -

6.7 Btu/lb = 24.9 Btu/lb.

Return air temperatures — 80 DB/66WB.

From Table PD-1, the leaving air wet bulb

temperature corresponding to an

enthalpy of 24.9 Btu/lb = 57.5.

Step 3 — Determine evaporator coil

entering air conditions. Mixed air dry

bulb temperature determination.

Return air cfm — 4250 cfm.

Leaving air temperatures =

61.7 DB/57.5 WB

Using the minimum percent of OA (1,200

cfm ÷ 12,000 cfm = 10 percent),

determine the mixture dry bulb to the

evaporator. RADB + %OA (OADB - RADB)

= 80 + (0.10) (95 - 80) = 80 + 1.5 = 81.5F

Outside air ventilation cfm and load —

1200 cfm and 18.23 MBh (1.52 tons).

Unit accessories include:

Approximate wet bulb mixture

temperature:

Aluminized heat exchanger — high heat

module.

RAWB + OA (OAWB - RAWB) = 66 + (0.10)

(76-66) = 68 + 1 = 67 F.

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Selection

Procedure

Heating capacity selection:

Table PD-9 also shows an air

temperature rise of 23.6 F for 12,000 cfm

through the 90 kw heat module.

The supply air fan motor selected in the

previous cooling capacity determination

example was 7.27 bhp with 652 rpm.

Thus, the supply fan motor selected is 7.5

hp.

Winter outdoor design conditions—5 F.

Unit supply temperature at design

heating conditions = mixed air

temperature + air temperature rise = 66.4

+ 23.6 = 90 F.

To select the drive, enterTable PD-15 for

a 30-ton unit. Select the appropriate

drive for the applicable rpm range. Drive

selection letter C with a range of 650

rpm, is required for 652 rpm.Where

altitude is significantly above sea level,

useTable PD-2 and PD-3, and Figure PD-1

for applicable correction factors.

Total return air temperature — 72 F.

Natural Gas Heating System

Winter outside air minimum ventilation

load and cfm — 1,200 cfm and 87.2 MBh.

Assume natural gas supply — 1000 Btu/

ft³. From Table PD-11, select the high heat

module (486 MBh output) to satisfy 291.6

at unit cfm.

Peak heating load 225 MBh.

Utilizing unit selection in the cooling

capacity procedure.

Table PD-11 also shows air temperature

rise of 37.3 F for 12,000 cfm through

heating module.

Unit Electrical Requirements

Selection procedures for electrical

requirements for wire sizing amps,

maximum fuse sizing and dual element

fuses are given in the electrical service

selection of this catalog.

Mixed air temperature = RADB + %O.A.

(OADB - RADB) = 72

+ (0.10) (0-72) = 64.8 F.

Unit supply temperature design heating

conditions = mixed air temperature + air

temperature rise = 66.4 + 37.3 = 103.7 F.

Supply air fan motor heat temperature

rise = 20,600 BTU ÷ (1.085 x 12,000) cfm

= 1.6 F.

Air Delivery Procedure

Unit Designation

Supply air fan bhp and rpm selection.

Unit supply air fan performance shown

inTable PD-12 includes pressure drops

for dampers and casing losses. Static

pressure drops of accessory

components such as heating systems,

and filters if used, must be added to

external unit static pressure for total

static pressure determination.

After determining specific unit

characteristics utilizing the selection

procedure and additional job

information, the complete unit model

number can be developed. Use the

model number nomenclature on page

14.

Mixed air temperature entering heat

module = 64.8 + 1.6 = 66.4 F.

Total winter heating load = peak heating

+ ventilation load - total fan motor heat =

225 + 87.2 - 20.6 = 291.6 MBh.

Electric Heating System

Unit operating on 480/60/3 power supply.

From Table PD-9, kw may be selected for

a nominal 30-ton unit operating on 480-

volt power.The high heat module — 90

KW or 307 MBh will satisfy the winter

heating load of 291.6 MBh.

STANDARD MOTOR

HIGH EFFICIENCY MOTOR

Figure SP-1 — Fan Motor Heat

120

110

100

MOTOR BRAKE HORSE POWER

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Model

Num ber

Description

480

456

0⁵

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29

Digit 16 — System Control

1 = Constant Volume

2 = VAV Supply Air Temperature Control

w/o Inlet Guide Vanes

3 = VAV Supply Air Temperature Control

w/Inlet Guide Vanes

4 = VAV Supply Air Temperature Control

w/Variable Frequency Drive w/o Bypass

5 = VAV Supply Air Temperature Control

w/Variable Frequency Drive and Bypass

Note: Zone sensors are not included with

option and must be ordered as a separate

accessory.

Digit 13 — Supply Fan Motor, HP

1 = 7.5 Hp Std. Eff.

2 = 10 Hp Std. Eff.

3 = 15 Hp Std. Eff.

4 = 20 Hp Std. Eff.

5 = 7.5 Hp Hi. Eff.

6 = 10 Hp Hi. Eff.

7 = 15 Hp Hi. Eff.

8 = 20 Hp Hi. Eff.

Digit 1, 2 — Unit Function

TC = DX Cooling, No Heat

TE = DX Cooling, Electric Heat

YC = DX Cooling, Natural Gas Heat

Digit 3 — Unit Airflow Design

D = Downflow Configuration

H = Horizontal Configuration

Digit 4, 5, 6 — Nominal Cooling Capacity

330 = 27½ Tons

360 = 30 Tons

420 = 35 Tons

480 = 40 Tons

Digit 14 — Supply Air Fan Drive

Selections (See Note 3)

A = 550 RPM

B = 600 RPM

C = 650 RPM

D = 700 RPM

E = 750 RPM

F = 790 RPM

G = 800 RPM

H = 500 RPM

J = 525 RPM

K = 575 RPM

L = 625 RPM

M = 675 RPM

N = 725 RPM

600 = 50 Tons

Digit 17 - 29 — Miscellaneous

A = Service Valves (See Note 2)

B = Through the Base Electrical Provision

C = Non-Fused Disconnect Switch with

External Handle

D = Factory-Powered 15A GFI

Convenience Outlet and Non-Fused

Disconnect Switch with

Digit 7 — Major Development Sequence

A = First

Digit 8 — Power Supply (See Note 1)

E = 208/60/3

F = 230/60/3

4 = 460/60/3

5 = 575/60/3

Digit 15 — Fresh Air Selection

A = No Fresh Air

B = 0-25% Manual Damper

C = 0-100% Economizer, Dry Bulb Control

D = 0-100% Economizer, Reference

Enthalpy Control

E = 0-100% Economizer, Differential

Enthalpy Control

F = “C” Option and Low Leak Fresh

Air Damper

External Handle

E = Field-Powered 15A GFI

Convenience Outlet

Digit 9 — Heating Capacity (See Note 4)

0 = No Heat (TC only)

L = Low Heat (YC only)

H = High Heat (YC only)

Note: When second digit is “E” for Electric

Heat, the following values apply in the ninth

digit.

A = 36 KW

B = 54 KW

C = 72 KW

D = 90 KW

F = ICS Control Option — Trane

Communication Interface, Supply Air

Sensing and Clogged Filter Switch

G = Ventilation Override

H = Hinged Service Access

J = Condenser Coil Guards

K = LonTalk Communication Interface

L = Special

G = “D” Option and Low Leak Fresh

Air Damper

H = “E” Option and Low Leak Fresh

Air Damper

M = Stainless Steel Drain Pans

N = Black Epoxy Coated Condenser Coil

E = 108 KW

Digit 10 Design Sequence

A = First

Digit 11 — Exhaust

0 = None

1 = Barometric Relief

(Available w/Economizer only)

2 = Power Exhaust Fan

(Available w/Economizer only)

No t e :

1. All voltages are across the line starting only.

2. Option includes Liquid, Discharge, Suction Valves.

3. Supply air fan drives A thru G are used with 27½-35 ton units only and drives H thru N are used with 40 & 50

ton units only.

4. Electric Heat KW ratings are based upon voltage ratings of 240/480/600 V. Voltage offerings are as follows (see

table PD-9 for additional inform ation):

Digit 12 — Filter

A = Standard 2” Throwaway Filters

B = High Efficiency 2” Throwaway Filters

C = High Efficiency 4” Throwaway Filters

Tons

27½ to 35

Voltage

240

108

480

600

40 and 50

240

480

600

5. The service digit for each m odel num ber contains 29 digits; all 29 digits m ust be referenced.

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General Data

Table GD-1 — General Data — 27 1/2 - 30 Tons

27 1/2Ton

30Ton

Cooling Perform ance¹

Nominal Gross Capacity

329,000

High

363,000

Natural Gas Heat²

Heating Input (BTUH)

First Stage

Low

350,000

250,000

283,500

202,500

81.00

Low

350,000

250,000

283,500

202,500

81.00

High

600,000

425,000

486,000

344,500

81.00

600,000

425,000

486,000

344,500

81.00

Heating Output (BTUH)

First Stage

Steady State Efficiency (%)³

No. Burners

No. Stages

Gas Connection Pipe Size (in.)

Electric Heat

KW Range⁵

27-90

Capacity Steps:

Com pressor

Number/Type

Size (Nominal)

2/Scroll

10/15

2/Scroll

Unit Capacity Steps (%)

Motor RPM

100/40

3450

100/50

3450

Outdoor Coil —Type

Tube Size (in.) OD

Face Area (sq. ft.)

Rows/Fins Per Inch

Indoor Coil —Type

Tube Size (in.) OD

Face Area (sq. ft.)

Rows/Fins Per Foot

Refrigerant Control

No. of Circuits

Lanced

51.33

2/16

51.33

2/16

Hi-Performance

31.67

2/180

TXV

31.67

2/180

TXV

Drain Connection No./Size (in)

Type

1/1.25

PVC

1/1.25

PVC

Outdoor Fan Type

No. Used/Diameter

Drive Type/No. Speeds

CFM

No. Motors/HP/RPM

Indoor Fan Type

No. Used

Propeller

3/28.00

Direct/1

24,800

3/1.10/1125

Propeller

3/28.00

Direct/1

24,800

3/1.10/1125

Diameter/Width (in)

Drive Type/No. Speeds

No. Motors/HP

22.38/22.00

Belt/1

1/7.50/10.00

1760

22.38/22.00

Belt/1

1/7.50/10.00

1760

Motor RPM

Motor Frame Size

Exhaust Fan Type

No. Used/Diameter (in)

Drive Type/No. Speeds/Motors

Motor HP/RPM

Motor Frame Size

Filters —Type Furnished

No./ Recommended Size (in)⁶

Refrigerant Charge (Lbs of R-22)⁴

Minim um Outside Air Tem perature

For Mechanical Cooling

213/215T

Propeller

2/26.00

Direct/2/2

1.0/1075

Throwaway

16/16 x 20 x 2

46.00

213/215T

Propeller

2/26.00

Direct/2/2

1.0/1075

Throwaway

16/16 x 20 x 2

46.60

0 F

Notes:

1. Cooling Perform ance is rated at 95 F am bient, 80 F entering dry bulb, 67 F entering wet bulb. Gross capacity does not include the effect of fan m otor heat. Rated and tested in

accordance with the Unitary Large Equipm ent certification program , which is based on ARI Standard 340/360-93.

2. Heating Perform ance lim it settings and rating data were established and approved under laboratory test conditions using Am erican National Standards Institute standards.

Ratings shown are for elevations up to 4,500 feet.

3. Steady State Efficiency is rated in accordance with DOE test procedures.

4. Refrigerant charge is an approxim ate value. For a m ore precise value, see unit nam eplate and service instructions.

5. Maxim um KW @ 208V = 41, @ 240V = 54.

6. Filter dim ensions listed are nom inal. For actual filter and rack sizes see the Unit Installation, Operation, Maintenance Guide.

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General Data

Table GD-2— General Data — 35-40Ton

35Ton

40Ton

Cooling Perform ance¹

Nominal Gross Capacity

Natural Gas Heat²

Heating Input (BTUH)

First Stage

Heating Output (BTUH)

First Stage

Steady State Efficiency (%)³

No. Burners

417,000

513,000

Low

350,000

250,000

283,500

202,500

81.00

High

600,000

425,000

486,000

344,500

81.00

Low

400,000

300,000

324,000

243,000

81.00

High

800,000

600,000

648,000

486,000

81.00

No. Stages

Gas Connection Pipe Size (in.)

Electric Heat

KW Range⁵

27-90

41-108

Capacity Steps:

Com pressor

Number/Type

Size (nominal)

Unit Capacity Steps (%)

Motor RPM

2/Scroll

100/50

3450

3/Scroll

15/15/10

100/60/40

3450

Outdoor Coil —Type

Tube Size (in.) OD

Face Area

Rows/Fins Per Inch

Indoor Coil —Type

Tube Size (in.) OD

Face Area (sq. ft.)

Rows/Fins Per Foot

Refrigerant Control

No. of Circuits

Lanced

51.33

2/16

69.79

2/16

Hi-Performance

31.67

3/180

TXV

37.50

3/180

TXV

Drain Connection No./Size (in)

Type

1/1.25

PVC

1/1.25

PVC

Outdoor Fan Type

No. Used/Diameter

Drive Type/No. Speeds

CFM

No. Motors/HP/RPM

Indoor Fan Type

No. Used

Propeller

3/28.00

Direct/1

24,800

3/1.10/1125

Propeller

4/28.00

Direct/1

31,700

4/1.10/1125

Diameter/Width (in)

Drive Type/No. Speeds

No. Motors/HP

22.38/22.00

Belt/1

1/7.50/10.00/15.00

1760

25.00/25.00

Belt/1

1/10.00/15.00

1760

Motor RPM

Motor Frame Size

Exhaust Fan Type

No. Used/Diameter (in)

Drive Type/No. Speeds/Motors

Motor HP/RPM

Motor Frame Size

Filters —Type Furnished

No./Recommended Size (in)⁶

Refrigerant Charge (Lbs of R-22)⁴

Minim um Outside Air Tem perature

For Mechanical Cooling

Notes:

213/215/254T

Propeller

2/26.00

Direct/2/2

1.0/1075

Throwaway

16/16 x 20 x 2

51.50

215/254T

Propeller

2/26.00

Direct/2/2

1.0/1075

Throwaway

17/16 x 20 x 2

26.00/47.10 per circuit

0 F

1. Cooling Perform ance is rated at 95 F am bient, 80 F entering dry bulb, 67 F entering wet bulb. Gross capacity does not include the effect of fan m otor heat. Rated and tested

in accordance with the Unitary Large Equipm ent certification program , which is based on ARI Standard 340/360-93.

2. Heating Perform ance lim it settings and rating data were established and approved under laboratory test conditions using Am erican National Standards Institute standards.

Ratings shown are for elevations up to 4,500 feet.

3. Steady State Efficiency is rated in accordance with DOE test procedures.

4. Refrigerant charge is an approxim ate value. For a m ore precise value, see unit nam eplate and service instructions.

5. Maxim um KW @ 208V = 41, @ 240V = 54.

6. Filter dim ensions listed are nom inal. For actual filter and rack sizes see the Unit Installation, Operation, Maintenance Guide.

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General Data

Table GD-3— General Data — 50Ton

Table GD-4 — Economizer Outdoor Air

Damper Leakage (Of Rated Airflow)

∆P Across Dampers (In. WC)

50Ton

Cooling Perform ance¹

Nominal Gross Capacity

Natural Gas Heat²

Heating Input (BTUH)

First Stage

Heating Output (BTUH)

First Stage

Steady State Efficiency (%)³

No. Burners

616,000

0.5 (In.)

1.5 %

0.5 %

1.0 (In.)

2.5 %

1.0 %

Low

High

800,000

600,000

648,000

486,000

81.00

Standard

Optional “Low Leak”

400,000

300,000

324,000

243,000

81.00

Note: Above data based on tests com pleted in

accordance with AMCA Standard 575.

No. Stages

Gas Connection Pipe Size (in.)

Electric Heat

KW Range⁵

41-108

Capacity Steps:

Com pressor

Number/Type

Size (nominal)

3/Scroll

Unit Capacity Steps (%)

Motor RPM

100/67/33

3450

Outdoor Coil —Type

Tube Size (in.) OD

Face Area (sq. ft.)

Rows/Fins Per Inch

Indoor Coil —Type

Tube Size (in.) OD

Face Area (sq. ft.)

Rows/Fins Per Foot

Refrigerant Control

No. of Circuits

Lanced

69.79

2/16

Hi-Performance

37.50

4/164

TXV

Drain Connection No./Size (in)

Type

1/1.25

PVC

Outdoor Fan Type

No. Used/Diameter

Drive Type/No. Speeds

CFM

Propeller

4/28.00

Direct/1

31,700

No. Motors/HP/RPM

Indoor Fan Type

No. Used

4/1.10/1125

Diameter/Width (in)

Drive Type/No. Speeds

No. Motors/HP

25.00/25.00

Belt/1

1/10.00/15.00/20.00

1760

Motor RPM

Motor Frame Size

Exhaust Fan Type

No. Used/Diameter (in)

Drive Type/No. Speeds/Motors

Motor HP/RPM

Motor Frame Size

Filters —Type Furnished

No./Recommended Size (in)⁶

Refrigerant Charge (Lbs of R-22)⁴

Minim um Outside Air Tem perature

For Mechanical Cooling

215/254/256T

Propeller

2/26.00

Direct/2/2

1.0/1075

Throwaway

17/16 x 20 x 2

25.70/54.30 per circuit

0 F

Notes:

1. Cooling Perform ance is rated at 95 F am bient, 80 F entering dry bulb, 67 F entering wet bulb. Gross capacity does

not include the effect of fan m otor heat. Rated and tested in accordance with the Unitary Large Equipm ent

certification program , which is based on ARI Standard 340/360-93.

2. Heating Perform ance lim it settings and rating data were established and approved under laboratory test conditions

using Am erican National Standards Institute standards. Ratings shown are for elevations up to 4,500 feet.

3. Steady State Efficiency is rated in accordance with DOE test procedures.

4. Refrigerant charge is an approxim ate value. For a m ore precise value, see unit nam eplate and service instructions.

5. Maxim um KW @ 208V = 41, @ 240V = 54.

6. Filter dim ensions listed are nom inal. For actual filter and rack sizes see the Unit Installation, Operation,

Maintenance Guide.

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Perform ance

Adjustm ent

Factors

Table PD-1— Enthalpy of Saturated AIR

Figure PD-1 —Air Density Ratios

Altitude/Temperature Correction

Wet BulbTemperature

Btu Per Lb.

15.23

15.70

16.17

16.66

17.15

17.65

18.16

18.68

19.21

19.75

20.30

20.86

21.44

22.02

Air Density

Ratio (Density

at New

22.62

23.22

Air Density)

Condition/Std.

23.84

24.48

25.12

25.78

26.46

27.15

27.85

28.57

29.31

30.06

30.83

31.62

32.42

Rooftop Leaving AirTemperature (degrees F)

33.25

34.09

Table PD-2 — Cooling Capacity Altitude Correction Factors

34.95

35.83

36.74

37.66

38.61

Altitude (Ft.)

Sea Level

1.00

1000

0.99

2000

0.99

3000

0.98

4000

0.97

5000

0.96

6000

0.95

7000

0.94

Cooling Capacity

Multiplier

KW Correction

Multiplier

(Compressors)

SHR Correction

Multiplier

1.00

1.01

.98

1.02

.95

1.03

.93

1.04

.91

1.05

.89

1.06

.87

1.07

.85

Maximum

Condenser

Ambient

115 F

114 F

113 F

112 F

111 F

110 F

109 F

108 F

Note:

SHR = Sensible Heat Ratio

Table PD-3 — Gas Heating Capacity Altitude Correction Factors

Altitude (Ft.)

Sea Level

To 2000

2001

To 2500

2501

To 3500

3501

To 4500

4501

To 5500

5501

To 6500

6501

To 7500

Capacity

Multiplier

1.00

.92

.88

.84

.80

.76

.72

Note:

Correction factors are per AGA Std 221.30 — 1964, Part VI, 6.12. Local codes may supersede.

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Perform ance

Data

Table PD-4 — 27 1/2 Ton Gross Cooling Capacities (MBh)

AmbientTemperature — Deg F

Entering Wet BulbTemperature — Deg F

67 73 61 67

105

115

Ent

CFM (F) TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC

8000 80

291 228 323 185 358 130

294 268 324 220 359 171

301 301 325 258 360 210

317 317 328 297 361 248

278 221 309 174 343 123

281 261 310 212 343 164

290 290 311 251 344 203

306 306 315 290 345 241

265 213 295 167 327 116

268 253 296 205 327 157

278 278 297 243 329 196

294 294 301 283 330 234

251 206 279 159 310 109

255 246 280 197 311 149

266 266 282 236 312 188

282 282 286 275 313 226

9000 80

299 242 331 189 367 133

302 286 332 232 367 178

314 314 334 275 368 221

331 331 338 319 369 264

285 235 316 182 351 126

290 279 318 225 351 171

302 302 319 268 352 215

319 319 324 312 354 256

272 227 301 175 334 119

276 272 303 217 335 164

290 290 305 260 336 208

306 306 310 304 337 249

257 219 286 168 316 112

261 261 287 209 317 157

277 277 289 252 319 201

293 293 293 293 320 241

10000 80

305 255 337 197 373 136

310 304 339 244 374 185

325 325 341 291 375 233

343 343 346 340 376 279

292 248 322 190 357 129

297 297 324 237 358 178

313 313 326 284 359 226

330 330 332 332 360 271

277 240 307 183 339 122

283 283 308 229 341 171

300 300 311 276 342 219

317 317 317 317 343 264

263 232 291 176 322 115

270 270 292 221 323 164

287 287 295 268 324 212

304 304 303 303 326 256

11000 80

311 268 343 205 379 139

316 316 344 255 380 192

335 335 347 307 381 245

353 353 353 353 383 293

297 260 327 198 362 132

304 304 329 248 363 185

322 322 332 300 364 237

340 340 340 340 366 286

282 253 311 191 344 125

291 291 313 240 345 178

309 309 317 292 347 230

327 327 327 327 349 278

268 245 295 183 326 117

278 278 297 232 327 170

295 295 301 284 329 220

313 313 312 312 331 270

12100 80

316 281 348 223 384 142

325 325 349 268 385 199

344 344 353 324 387 254

364 364 363 363 388 309

302 274 332 216 366 135

312 312 334 260 368 192

331 331 338 317 369 246

350 350 350 350 372 301

287 266 316 208 348 128

299 299 318 252 350 185

317 317 322 309 352 239

336 336 336 336 354 294

272 258 299 200 330 121

285 285 301 244 331 176

303 303 306 301 333 231

321 321 321 321 336 286

Notes:

1. All capacities shown are gross and have not considered indoor fan heat. To obtain net cooling, subtract indoor fan heat.

2. TGC = Total gross capacity.

3. SHC = Sensible heat capacity.

Table PD-5— 30Ton Gross Cooling Capacities (Mbh)

AmbientTemperature — Deg F

Entering Wet Bulb Temperature — Deg F

67 73 61 67

105

115

Ent

CFM (F) TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC

9000 80

323 255 358 207 397 144

326 299 359 245 398 190

335 335 361 288 399 234

352 352 364 332 400 276

309 247 343 194 380 137

313 291 344 237 381 182

323 323 346 280 382 227

340 340 349 324 383 269

295 239 327 186 362 129

298 283 328 229 363 175

310 310 330 272 364 219

327 327 334 316 365 261

279 230 310 178 344 122

284 275 311 221 345 167

297 297 313 264 345 210

313 313 318 308 347 252

10000 80

331 268 366 210 405 147

335 317 367 257 406 197

347 347 369 304 407 246

366 366 374 353 408 292

316 260 350 202 387 140

321 309 351 249 388 189

334 334 353 296 389 238

353 353 358 345 391 284

301 252 333 194 369 132

306 301 335 241 370 182

321 321 337 288 371 230

339 339 342 337 372 276

286 243 316 186 350 125

290 290 318 232 351 174

307 307 320 280 352 222

325 325 324 324 353 267

11000 80

337 281 372 218 411 150

343 335 374 269 412 204

358 358 376 321 413 257

378 378 382 374 415 306

322 273 356 210 393 143

328 327 357 261 394 196

345 345 360 312 395 249

364 364 367 366 397 298

307 265 339 202 374 135

312 312 340 252 375 188

331 331 343 304 377 241

350 350 349 349 378 290

291 256 321 194 355 127

298 298 323 244 356 180

316 316 326 296 357 233

335 335 334 334 359 282

12000 80

343 294 378 225 417 153

348 348 379 280 418 210

368 368 382 336 419 268

388 388 388 388 421 321

328 285 361 218 398 145

334 334 362 272 399 203

354 354 366 328 401 260

374 374 374 374 402 313

312 277 343 210 379 138

321 321 345 263 380 195

340 340 349 320 382 252

359 359 359 359 383 304

295 268 325 201 359 129

306 306 327 255 360 187

325 325 331 311

362 244

343 343 343 343 364 296

13200 80

349 308 383 246 422 156

357 357 385 293 423 218

378 378 389 354 425 278

399 399 399 399 427 337

333 300 366 238 403 149

343 343 368 285 405 210

364 364 372 346 406 270

384 384 384 384 408 329

317 291 348 229 383 141

329 329 350 276 385 202

349 349 355 338 387 261

369 369 369 369 389 321

300 283 329 221 363 133

314 314 332 268 365 194

333 333 337 329 366 253

353 353 352 352 369 312

Notes:

1. All capacities shown are gross and have not considered indoor fan heat. To obtain net cooling, subtract indoor fan heat.

2. TGC = Total gross capacity.

3. SHC = Sensible heat capacity.

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Perform ance

Data

Table PD-6 — 35Ton Gross Cooling Capacities (Mbh)

AmbientTemperature — Deg F

Entering Wet Bulb Temperature — Deg F

67 73 61 67

105

115

Ent

CFM (F) TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC

10500 80

377 310 416 240 459 166

383 367 417 296 460 224

398 398 420 351 461 281

419 419 426 409 462 336

361 301 398 231 438 158

366 359 399 287 439 216

383 383 402 343 440 272

404 404 408 400 442 327

343 291 379 223 417 150

350 349 380 278 418 207

368 368 383 333 419 263

388 388 388 388 421 317

325 282 359 214 396 141

332 332 360 268 397 198

352 352 364 324 397 254

371 371 371 371 399 308

12000 80

387 332 425 258 468 171

393 393 427 315 469 236

415 415 431 379 470 300

437 437 437 437 472 361

370 322 406 249 447 162

378 378 408 306 448 227

399 399 412 370 449 290

421 421 421 421 451 352

352 313 387 240 425 154

362 362 388 297 426 218

383 383 393 361 427 281

404 404 404 404 430 342

334 303 366 231 403 145

346 346 368 288 404 209

366 366 373 351 405 271

386 386 386 386 408 333

13000 80

393 346 430 261 473 173

402 402 432 328 475 243

425 425 437 397 476 312

448 448 448 448 478 377

375 337 411 253 452 165

387 387 413 319 453 234

409 409 418 388 454 303

431 431 431 431 457 368

357 327 391 244 429 156

370 370 393 310 430 225

392 392 399 378 432 294

413 413 413 413 435 359

339 317 370 234 406 147

353 353 372 300 408 216

374 374 379 369 409 285

395 395 395 395 412 349

14000 80

398 360 435 270 478 176

410 410 437 341 479 250

434 434 443 414 480 324

458 458 457 457 484 393

380 351 415 261 456 167

394 394 417 332 457 241

417 417 423 405 458 315

440 440 440 440 462 384

362 341 395 252 433 159

378 378 397 322 434 232

400 400 404 396 436 306

422 422 422 422 440 375

343 331 373 243 410 150

360 360 376 312

411 223

381 381 381 381 413 297

403 403 403 403 417 365

14400 80

400 365 436 272 479 177

413 413 439 346 481 253

437 437 445 421 482 326

461 461 461 461 486 400

382 356 416 263 457 168

397 397 419 336 459 244

420 420 426 412 460 317

443 443 443 443 464 390

364 346 396 254 434 160

380 380 399 327 436 235

402 402 406 402 437 308

425 425 425 425 442 381

345 337 375 244

411 151

363 363 378 317 412 226

384 384 384 384 414 298

406 406 406 406 419 371

Notes:

1. All capacities shown are gross and have not considered indoor fan heat. To obtain net cooling, subtract indoor fan heat.

2. TGC = Total gross capacity.

3. SHC = Sensible heat capacity.

Table PD-7 — 40Ton Gross Cooling Capacities (Mbh)

AmbientTemperature — Deg F

Entering Wet Bulb Temperature — Deg F

67 73 61 67

105

115

Ent

CFM (F) TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC

12000 80

460 365 510 288 565 202

466 432 511 351 566 269

480 480 515 415 567 333

506 506 521 480 568 398

439 353 486 276 539 190

445 419 487 338 540 257

461 461 491 402 541 322

487 487 498 468 543 385

416 340 462 263 512 178

423 406 463 325 513 244

441 441 467 390 515 309

467 467 475 455 517 373

393 327 436 250 484 166

401 393 438 312 486 232

421 421 442 376 487 297

445 445 450 442 489 360

14000 80

476 396 525 304 580 208

484 473 526 378 581 284

506 506 532 453 582 359

535 535 541 529 585 432

453 383 500 291 553 196

463 461 502 365 554 272

486 486 508 440 556 347

514 514 518 517 559 420

430 370 474 279 525 184

438 438 477 352 526 260

465 465 482 427 528 335

492 492 492 492 531 407

406 357 448 266 496 172

417 417 450 339 497 248

443 443 457 414 499 321

470 470 469 469

15000 80

482 411 530 317 586 211

489 489 533 391 587 292

518 518 539 471 588 372

547 547 546 546 591 449

459 398 505 305 558 199

469 469 508 379 560 280

497 497 514 458 561 360

525 525 525 525 565 437

436 385 479 292 530 187

448 448 482 366 531 268

475 475 489 445 533 346

503 503 503 503 537 424

411 371 452 279

426 426 456 352

453 453 463 432

480 480 480 480

16000 80

488 425 536 321 591 213

499 499 539 405 592 299

528 528 546 489 593 383

558 558 558 558 597 466

465 412 510 309 563 202

478 478 513 392 565 287

507 507 521 477 566 371

536 536 536 536 571 453

441 399 484 296 534 189

457 457 487 379 536 275

485 485 495 463 538 358

513 513 513 513 543 440

416 385 456 282

434 434 460 365

461 461 469 450

489 489 489 489

17600 80

497 448 543 335 598 217

513 513 547 425 599 311

543 543 555 518 601 401

574 574 574 574 606 492

473 435 517 322 570 206

491 491 521 412 572 299

521 521 530 505 574 389

551 551 551 551 579 479

449 422 490 308 541 193

469 469 495 399 543 286

498 498 504 492 545 376

527 527 527 527 551 466

424 408 462 295

446 446 467 385

474 474

Notes:

1. All capacities shown are gross and have not considered indoor fan heat. To obtain net cooling, subtract indoor fan heat.

2. TGC = Total gross capacity.

3. SHC = Sensible heat capacity.

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Data

Table PD-8 — 50Ton Gross Cooling Capacities (MBh)

AmbientTemperature — Deg F

Entering Wet Bulb Temperature — Deg F

67 73 61 67

105

115

Ent

CFM (F) TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC

15000 80

556 459 614 356 679 244

565 547 616 439 680 331

590 590 622 524 682 417

623 623 631 611 684 500

529 444 585 342 647 230

539 533 588 424 649 318

567 567 593 509 651 403

599 599 604 597 654 486

502 429 555 327 614 216

511 511 558 409 616 303

542 542 564 494 618 389

574 574 574 574 622 471

475 414 524 312

487 487 527 394

517 517 534 479

547 547 547 547

17000 80

570 491 627 373 691 250

581 581 630 468 693 348

615 615 637 564 694 443

650 650 649 649 698 536

543 476 597 359 659 236

557 557 601 453 661 334

590 590 608 549 662 429

624 624 624 624 667 522

515 460 566 344 625 222

532 532 570 437 627 320

565 565 578 534 629 414

597 597 597 597 634 507

486 445 533 328

506 506 538 422

538 538 547 518

18000 80

576 506 633 386 696 252

591 591 636 482 698 355

626 626 644 583 699 455

661 661 661 661 703 554

548 491 602 371 663 239

566 566 606 467 666 342

601 601 615 568 668 441

635 635 635 635 673 540

520 476 570 356 629 224

541 541 575 451 632 327

574 574 584 553 634 426

608 608 607 607 640 525

491 460 538 340

514 514 543 436

547 547 553 537

19000 80

581 522 638 391 701 255

600 600 642 495 702 363

636 636 651 602 704 467

671 671 671 671 709 571

554 507 607 377 668 241

575 575 611 480 670 350

610 610 621 587 673 453

645 645 645 645 678 557

525 491 575 362 633 227

549 549 580 465 636 335

583 583 590 572 639 438

617 617 617 617 645 543

496 475 542 345

522 522 547 449

555 555 559 556

20000 80

587 537 642 400 705 257

609 609 647 509 707 371

645 645 657 621 708 479

681 681 681 681 714 589

559 522 611 386 672 244

583 583 616 494 674 357

619 619 627 606 677 465

654 654 654 654 683 575

530 506 579 371 637 230

557 557 584 478 640 343

591 591 596 591 643 450

626 626 626 626 650 560

501 490 545 353

529 529 551 463

563 563 562 562

Notes:

1. All capacities shown are gross and have not considered indoor fan heat. To obtain net cooling, subtract indoor fan heat.

2. TGC = Total gross capacity.

3. SHC = Sensible heat capacity.

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Data

Table PD-9 — Electric Heat AirTemperature Rise

Input

Total

MBH

123

184

246

Cfm

14000

8.1

12.1

16.2

20.2

24.3

8000

14.2

21.2

28.3

35.4

—

9000

12.6

18.9

25.2

31.5

—

10000

11.3

17.0

22.6

28.3

—

11000

10.3

15.4

20.6

25.7

—

12000

9.4

14.2

18.9

23.6

28.3

13000

8.7

13.1

17.4

21.8

26.1

15000

7.6

11.3

15.1

18.9

22.6

16000

—

10.6

14.2

17.7

21.2

17000

—

10.0

13.3

16.7

20.0

18000

—

9.4

12.6

15.7

18.9

19000

—

8.9

11.9

14.9

17.9

20000

—

8.5

11.3

14.2

17.0

108

307

369

Notes:

1. Air tem perature rise = (KW x 3413)/(scfm x 1.085).

2. All heaters on constant volum e units provide 2 increm ents of capacity. All VAV units provide 1 step of heating capacity.

3. Air tem perature rise in this table are based on heater operating at 240, 480 or 600 volts.

Table PD-10 —Available Electric Heat KW Ranges

Nominal

Unit Size

Tons

Nominal Voltage

208

27-41

240

36-54

480

600

27½

30.0

36-90 54-90

54-108 54-108

35.0

40.0

50.0

Notes:

1. KW ranges in this table are based on heater operating at 208, 240, 480, and 600 volts.

Applied Voltage

2. For other than rated voltage, KW =

x Rated KW.

(

)

Rated Voltage

3. Electric heaters up to 54 KW are single element heaters, those above 54 KW are dual element heaters.

Table PD-11 — Natural Gas Heating Capacities

Heat Input MBH

(See Note 1)

Heating Output MBH

(See Note 1)

Tons

Unit Model No.

YCD/YCH330**L

AirTemp. Rise, F

10-40

27½-35

YCD/YCH360**L

350,000/250,000

600,000/425,000

283,500/202,500

486,000/344,500

YCD/YCH420**L

YCD/YCH330**H

27½-35

40-50

YCD/YCH360**H

25-55

YCD/YCH420**H

YCD/YCH480**L

YCD/YCH600**L

YCD/YCH480**H

400,000/300,000

800,000/600,000

324,000/243,000

648,000/486,000

5-35

40-50

Note:

YCD/YCH600**H

20-50

1. Second stage is total heating capacity. Second Stage/First Stage.

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Data

Table PD-12 — Supply Fan Performance — 27½ - 35Ton

Static Pressure (in. wg)¹

1.25

0.25

RPM

0.50

0.75

BHP RPM

1.00

1.50

1.75

BHP RPM

2.00

RPM

2.25

RPM

SCFM

8000

BHP

1.39

1.60

1.84

2.10

2.39

2.71

3.07

3.46

3.89

4.34

4.84

5.36

5.91

6.51

RPM

401

412

423

435

448

461

474

488

501

515

528

542

555

570

BHP RPM

BHP

RPM

552

556

561

568

576

585

597

608

619

630

641

652

664

676

BHP RPM

BHP

4.80

5.09

5.41

5.74

6.11

6.50

6.93

7.41

BHP

5.51

5.83

6.16

6.51

6.89

7.30

7.73

8.20

8.73

9.30

9.93

BHP

6.24

6.59

6.94

7.31

341

355

368

382

396

410

425

440

455

470

485

501

516

532

1.85

2.08

2.35

2.64

2.96

3.31

3.68

4.08

4.52

4.98

5.47

6.00

6.58

7.20

451

462

473

484

495

506

518

530

542

555

569

582

595

609

2.30

2.58

2.88

3.20

3.53

3.89

4.29

4.72

5.19

5.69

6.23

6.79

7.40

501

508

516

526

537

549

560

571

582

593

605

617

630

643

2.84

3.09

3.39

3.73

4.12

4.53

4.95

5.39

5.86

6.38

6.94

7.54

3.45

3.71

4.00

4.32

4.69

5.10

5.57

6.08

6.60

7.13

599

602

606

611

616

623

631

641

652

664

675

686

697

708

4.11

4.38

4.68

5.00

5.36

5.76

6.20

6.71

7.27

7.87

8.49

9.12

9.78

644

686

688

691

694

697

701

705

711

718

726

734

726

728

730

732

735

738

742

747

752

758

765

774

784

795

8500

9000

9500

646

649

653

657

662

668

676

684

694

706

717

729

740

10000

10500

11000

11500

12000

12500

13000

13500

14000

14500

7.71

8.13

8.58

9.06

9.57

10.14

10.76

11.43

12.19

13.02

7.95

8.55

9.21

9.91

10.64

11.38

7.69

8.29

8.95

9.65

745 10.65

757 11.42

768 12.22

8.18

8.85

8.04

10.48

Notes:

1. Fan perform ance table includes internal resistances of cabinet, and 2” standard filters. For other com ponents refer to com ponent static pressure drop table. Add the

pressure drops from any additional com ponents to the duct (external) static pressure, enter the table, and select m otor bhp.

2. The pressure drop from the supply fan to the space cannot exceed 2.25”.

3. Maxim um air flow for 27½ ton — 12,100 cfm , 30 ton — 13,200 cfm , 35 ton — 14,400 cfm .

4. Maxim um m otor horsepower for 27½ ton — 10 hp, 30 ton — 10 hp, 35 ton — 15 hp.

Figure PD-2

4.2

800 rpm

0% wocfm

3.8

750 rpm

700 rpm

15 HP

50% wocfm

3.4

3.0

2.6

2.2

1.8

1.4

1.0

0.6

0.2

10 HP

650 rpm

600 rpm

60% wocfm

7.5 HP

550 rpm

500 rpm

70% wocfm

5 HP

3 HP

450 rpm

400 rpm

80% wocfm

90% wocfm

2000

4000

6000

8000

10000

12000

CFM

14000

16000

18000

20000

22000

24000

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Data

Table PD-13 — Supply Fan Performance — 40 and 50Ton

Static Pressure (in. wg)¹

1.25 1.50

SCFM RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

0.25

0.50

0.75

1.00

1.75

2.00

2.25

2.50

12000

13000

365

388

3.02 408

3.73 427

3.66

4.40

448 4.32

468 5.13

485

501

4.99

5.84

522 5.70

536 6.57

556

569

6.44

7.34

588

601

7.20 620

8.15 631

7.96

652

660

672

8.75

9.80

682 9.56

690 10.66

8.96

14000

15000

16000

17000

18000

19000

412

436

460

485

509

534

4.54 448

5.46 471

6.53 493

7.72 516

9.06 540

10.54 563

5.26

6.25

7.36

8.59

9.97

11.50

486 6.03

505 7.04

525 8.17

546 9.46

568 10.91

590 12.49

520

540

559

577

596

617

6.80

7.89

9.08

10.39

11.84

551 7.57

569 8.70

588 9.96

608 11.36

584

599

615

8.36

9.54

10.83

615

629

643

9.21 643

10.40 658

10.06

11.31

10.96

699 11.86

711 13.15

685 12.21

11.73 672 12.66 699 13.60 724 14.58

14.17 713 15.15 739 16.16

14.84 702 15.83 728 16.85 753 17.88

634 12.28 659 13.20 687

627 12.88 654 13.86 678

674 15.60 697 16.64 719

17.45 717 18.57 739

13.45 645 14.51

17.64

743

18.71

768 19.79

20000

Notes:

560 12.18 587 13.18

613 14.24 638 15.25 664 16.31 692

19.66

760

20.74

783 21.85

1. Fan perform ance table includes internal resistances of cabinet, and 2” standard filters. For other com ponents refer to com ponent static pressure drop table. Add the

pressure drops from any additional com ponents to the duct (external) static pressure, enter the table, and select m otor bhp.

2. The pressure drop from the supply fan to the space cannot exceed 2.50”.

3. Maxim um air flow for 40 ton — 17,600 cfm , 50 ton — 20,000 cfm .

4. Maxim um m otor horsepower for 40 ton — 15 hp, 50 ton — 20 hp.

Figure PD-3

4.0

3.5

3.0

2.5

2.0

1.5

1.0

0.5

0.0

2000

4000

6000

8000

10000

12000

14000

CFM

16000

18000

20000

22000

24000

26000

28000

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Data

Table PD-14 — Component Static Pressure Drops (in.W.G.)¹

Heating System

Filters²

High Eff. Filters

Nominal

Tons

CFM

Std Air

8000

Gas Heat

Electric Heat³

1 Element 2 Element

0.05

0.07

0.08

0.10

ID Coil

Adder

0.00

Inlet Guide

Vanes

Low

0.08

High

2”

4”

0.03

Economizer

0.04

0.06

0.08

0.10

0.12

0.06

0.07

0.09

0.11

0.04

0.05

0.06

0.08

0.05

9000

10000

11000

0.10

0.13

0.15

0.00

0.04

0.05

0.07

0.08

0.10

0.04

0.05

0.06

27½

12000

9000

0.18

0.10

0.14

0.08

0.12

0.07

0.13

0.07

0.00

0.09

0.05

0.07

0.04

0.12

0.07

0.04

10000

11000

12000

0.13

0.15

0.18

0.10

0.12

0.14

0.08

0.10

0.12

0.09

0.11

0.13

0.00

0.06

0.08

0.09

0.05

0.07

0.08

0.10

0.12

0.05

0.06

0.07

13000

10500

0.21

0.14

0.16

0.11

0.14

0.09

0.15

0.10

0.00

0.11

0.07

0.08

0.05

0.14

0.09

0.06

11500

12500

13500

0.17

0.20

0.23

0.13

0.15

0.18

0.11

0.13

0.15

0.12

0.14

0.16

0.12

0.14

0.16

0.08

0.10

0.11

0.06

0.07

0.08

0.11

0.13

0.15

0.07

0.08

0.10

14500

12000

0.26

0.01

0.20

0.03

0.18

0.08

0.19

0.13

0.18

0.00

0.13

0.09

0.10

0.07

0.18

0.04

0.11

0.07

13000

14000

15000

16000

0.01

0.02

0.04

0.05

0.06

0.10

0.11

0.13

0.15

0.18

0.20

0.23

0.00

0.11

0.12

0.14

0.16

0.08

0.09

0.10

0.12

0.05

0.06

0.07

0.08

0.09

0.10

0.11

17000

15000

0.02

0.07

0.05

0.17

0.13

0.26

0.20

0.00

0.12

0.18

0.14

0.13

0.10

0.08

0.06

0.12

0.10

16000

17000

18000

19000

20000

0.02

0.03

0.06

0.07

0.08

0.09

0.15

0.17

0.19

0.21

0.23

0.26

0.29

0.32

0.36

0.13

0.15

0.16

0.18

0.19

0.16

0.18

0.20

0.23

0.25

0.12

0.13

0.15

0.16

0.18

0.07

0.08

0.09

0.10

0.11

0.12

0.14

0.16

0.18

Notes:

1. Static pressure drops of accessory com ponents m ust be added to external static pressure to enter fan selection tables.

2. Throwaway filter option lim ited to 300 ft/m in face velocity.

3. Electric Heaters 36-54 KW contain 1 elem ent; 72-108 KW 2 elem ents.

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Data

Table PD-15 — Supply Air Fan Drive Selections

7.5 HP

10 HP

15 HP

20 HP

Nominal

Tons

Drive

RPM

550

600

650

700

750

550

600

650

700

750

600

650

700

790

800

500

525

575

625

675

725

525

575

625

675

725

RPM

27½T

700

750*

30T

700

750

650

700

35T

790**

800*

500

525

575

40T

50T

625

675

725

525

575

625

675

725

Note:

*For YC gas/electrics only.

**For TC and TE Cooling only and with electric heat units only.

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Data

Table PD-16— Power Exhaust Fan Performance

Exhaust

Airflow

(Cfm)

External Static Pressure — Inches ofWater

High Speed

ESP

Med Speed

ESP

Low Speed

ESP

3500

4000

4500

5000

5500

6000

6500

7000

7500

8000

8500

9000

9500

10000

10500

11000

11500

12000

0.900

0.860

0.820

0.780

0.745

0.700

0.660

0.610

0.560

0.505

0.445

0.385

0.320

0.255

0.190

0.125

0.065

0.005

—

0.400

0.380

0.360

0.330

0.300

0.260

0.215

0.170

0.120

0.070

0.020

—

0.400

0.365

0.330

0.300

0.255

0.210

0.165

0.125

0.060

0.000

—

Notes:

1. Perform ance in table is with both m otors operating.

2. High speed = both m otors on high speed. Medium speed is one m otor on high speed and one on low speed.

Low speed is both m otors on low speed.

3. Power Exhaust option is not to be applied on system s that have m ore return air static pressure drop than the

m axim um shown in the table for each m otor speed tap.

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Controls

Variable Frequency Drives (VFD) Control

fresh air dampers drive to the minimum

open position. A field adjustable

potentiometer on the Unitary

Economizer Module,Tracer®, or a

remote potentiometer can provide the

input to establish the minimum damper

position.

VAV Units Only

Sequence of Operation

Variable frequency drives are driven by a

modulating 0-10 vdc signal from the VAV

module. A pressure transducer

measures duct static pressure, and the

VFD is modulated to maintain the supply

air static pressure within an adjustable

user-defined range. The range is

Supply Air Pressure Control

Inlet Guide Vane Control

Inlet guide vanes are driven by a

modulating 2-10 vdc signal from the VAV

Module. A pressure transducer

At outdoor air conditions above the

enthalpy control setting, primary cooling

only is used and the fresh air dampers

remain at minimum position.

determined by the supply air pressure

setpoint and supply air pressure

measures duct static pressure, and the

inlet guide vanes are modulated to

maintain the supply air static pressure

within an adjustable user-defined range.

The range is determined by the supply

air pressure setpoint and supply air

pressure deadband, which are set

through a unit mounted potentiometer.

deadband, which are set through a unit

mounted potentiometer. Variable

frequency drives provide supply fan

motor speed modulation. The drive will

accelerate or decelerate as required to

maintain the supply static pressure

setpoint. When subjected to high

ambient return conditions the VFD shall

reduce its output frequency to maintain

operation. Bypass control is offered to

provide full nominal airflow in the event

of drive failure.

If the unit does not include an

economizer, primary cooling only is used

to satisfy cooling requirements.

Supply Air Setpoint Reset

Supply air reset can be used to adjust

the supply air temperature setpoint on

the basis of a zone temperature, return

air temperature, or on outdoor air

temperature. Supply air reset adjustment

is available on the unit mounted VAV

Setpoint Panel for supply air cooling

control.

Inlet guide vane assemblies installed on

the supply fan inlets regulate fan

capacity and limit horsepower at lower

system air requirements. When in any

position other than full open, the vanes

pre-spin intake air in the same direction

as supply fan rotation. As the vanes

approach the full-closed position, the

amount of “spin” induced by the vanes

increases at the same time that intake

airflow and fan horsepower diminish.

The inlet guide vanes will close when the

supply fan is shut down.

Supply AirTemperature Controls

Cooling/Economizer

Reset Based on Outdoor AirTemperature

During occupied cooling mode of

operation, the economizer (if available)

and primary cooling are used to control

the supply air temperature.The supply

air temperature setpoint is user-defined

at the unit mounted VAV Setpoint Panel

or at the remote panel. If the enthalpy of

the outside air is appropriate to use “free

cooling,” the economizer will be used

first to attempt to satisfy the supply

setpoint.

Outdoor air cooling reset is sometimes

used in applications where the outdoor

temperature has a large effect on

building load. When the outside air

temperature is low and the building

cooling load is low, the supply air

setpoint can be raised, thereby

preventing subcooling of critical zones.

This reset can lower usage of primary

cooling and result in a reduction in

primary cooling energy usage.

Supply Air Static Pressure Limit

The opening of the inlet guide vanes and

VAV boxes are coordinated, with respect

to time, during unit start up and

transition to/from Occupied/Unoccupied

modes to prevent overpressurization of

the supply air ductwork. However, if for

any reason the supply air pressure

exceeds the fixed supply air static

pressure limit of 3.5” W.C., the supply

fan is shut down and the inlet guide

vanes are closed.The unit is then

allowed to restart four times. If the

overpressurization condition occurs on

the fifth time, the unit is shut down and a

manual reset diagnostic is set and

displayed at any of the remote panels

with LED status lights or communicated

to the Integrated Comfort system.

On units with economizer, a call for

cooling will modulate the fresh air

There are two user-defined parameters

that are adjustable through the VAV

Setpoint Panel: reset temperature

setpoint and reset amount.The amount

of reset applied is dependent upon how

far the outdoor air temperature is below

the supply air reset setpoint.The amount

is zero where they are equal and

dampers open.The rate of economizer

modulation is based on deviation of the

discharge temperature from setpoint,

i.e., the further away from setpoint, the

faster the fresh air damper will open.

Note that the economizer is only allowed

to function freely if ambient conditions

are below the enthalpy control setting or

below the return air enthalpy if unit has

comparative enthalpy installed. If outside

air is not suitable for “economizing,” the

increases linearly toward the value set at

the reset amount input.The maximum

value is 20 F. If the outdoor air

temperature is more than 20 F below the

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reset temperature setpoint the amount

of reset is equal to the reset amount

setpoint.

Morning Warm-up setpoint is set at the

unit mounted VAV Setpoint panel or at a

remote panel.

not suitable for “economizing,” the fresh

air dampers drive to the minimum open

position. A field adjustable

potentiometer on the Unitary

Morning Warm-up (MWU)

Economizer Module (UEM),Tracer or a

remote potentiometer can provide the

input to establish the minimum damper

position.

Reset Based On Zone Or Return

Temperature

Morning warm-up control (MWU) is

activated whenever the unit switches

from unoccupied to occupied and the

zone temperature is at least 1.5 F below

the MWU setpoint.When MWU is

activated the VAV box output will be

energized for at least 6 minutes to drive

all boxes open, the inlet guide vanes are

driven full open, and all stages of heat

(gas or electric) are energized. When

MWU is activated the economizer

damper is driven fully closed. When the

zone temperature meets or exceeds the

MWU setpoint minus 1.5 F, the heat will

be staged down. When the zone

Zone or return reset is applied to the

zone(s) in a building that tend to

At outdoor air temperatures above the

enthalpy control setting, primary cooling

only is used and the outdoor air

overcool or overheat.The supply air

temperature setpoint is adjusted based

on the temperature of the critical zone(s)

or the return air temperature.This can

have the effect of improving comfort

and/or lowering energy usage.The user-

defined parameters are the same as for

outdoor air reset.

dampers remain at minimum position.

If the unit does not include an

economizer, primary cooling only is used

to satisfy cooling requirements.

Heating

Logic for zone or return reset control is

the same except that the origins of the

temperature inputs are the zone sensor

or return sensor respectively.The

amount of reset applied is dependent

upon how far the zone or return air

temperature is below the supply air reset

setpoint.The amount is zero where they

are equal and increases linearly toward

the value set at the reset amount

potentiometer on the VAV Setpoint

panel.The maximum value is 3 F. If the

return or zone temperature is more than

3 F below the reset temperature setpoint

the amount of reset is equal to the reset

amount setpoint.

Gas Heating

When heating is required the UCP

initiates the heating cycle by energizing

the K5 relay, heating relay(s), and the

ignition control module(s).The K5 relay

brings on the combustion fan motor.The

ignition control module(s) begin the

ignition process by preheating the hot

surface ignitor(s). After the hot surface

ignitor is preheated the gas valve is

opened to ignite first stage. If ignition

does not take place the ignition control

module(s) will attempt to ignite 2 more

times before locking out. When ignition

does occur the hot surface ignitor is

deenergized and then functions as a

flame sensor.The UCP will energize the

supply fan contactor 45 seconds after the

initiation of the heat cycle. If more

temperature meets or exceeds the MWU

setpoint then MWU will be terminated

and the unit will switch over to VAV

cooling.

CV Units Only

Sequence of Operation

Occupied Zone Temperature Control

Cooling/Economizer

During occupied cooling mode, the

economizer (if provided) and primary

cooling are used to control zone

temperature. If the enthalpy of outside

air is appropriate to use “free cooling”,

the economizer will be used first to

attempt to satisfy the cooling zone

temperature setpoint; then primary

cooling will be staged up as necessary.

Zone Temperature Control

Unoccupied Zone Heating and Cooling

capacity is needed to satisfy the heating

setpoint, the UCP will call for the second

stage of heat by driving the combustion

blower motor to high speed.

During Unoccupied mode, the unit is

operated as a CV unit. Inlet guide vanes

and VAV boxes are driven full open.The

unit controls zone temperature to the

Unoccupied zone cooling and heating

(heating units only) setpoints.

On units with economizer, a call for

cooling will modulate the fresh air

When the space temperature rises above

the heating setpoint, the UCP

deenergizes the K5 relay, the heating

relays, and the ignition control module,

terminating the heat cycle.

dampers open.The rate of economizer

modulation is based on deviation of the

zone temperature from setpoint, i.e., the

further away from setpoint, the faster the

fresh air damper will open. First stage of

cooling will be allowed to start after the

economizer reaches full open.

Daytime Warm-up

During occupied mode, if the zone

temperature falls to a temperature three

degrees below the Morning Warm-up

setpoint, Daytime Warm-up is initiated.

The system changes to CV heating (full

unit airflow), the VAV boxes are fully

opened and the CV heating algorithm is

in control until the Morning Warm-up

setpoint is reached.The unit is then

returned to VAV cooling mode.The

Electric Heating

When heat is required, the UCP initiates

first stage heating by energizing the first

stage electric heat contactor.The first

stage electric heater bank(s) will be

energized if the appropriate limits are

closed.The UCP will cycle first stage heat

on and off as required to maintain zone

temperature. If first stage cannot satisfy

Note that the economizer is allowed to

function freely only if ambient conditions

are below the enthalpy control setting or

below the return air enthalpy if unit has

comparative enthalpy. If outside air is

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the requirement, the UCP will energize

the second stage electric heat

contactor(s) if the appropriate limits are

closed.The UCP will cycle second stage

on and off as required while keeping

stage one energized.

rises to 10 F above the occupied zone

heating temperature setpoint.

CTI provides zone temperature control

only and is mutually exclusive of the

Trane Communications Interface.

Auto Changeover

Control Sequences of

Operation Common to Both

VAV and CV Units

When the System Mode is “Auto,” the

mode will change to cooling or heating

as necessary to satisfy the zone cooling

and heating setpoints.The zone cooling

and heating setpoints can be as close as

2 F apart.

The supply fan is energized

approximately 1 second before the

electric heat contactors. When the space

temperature rises above the heating

setpoint, the UCP deenergizes the supply

fan and all electric heat contactors.

Ventilation override (VOM)

Ventilation override allows an external

system to assume control of the unit for

the purpose of exhaust or pressurization.

There are two inputs associated with

ventilation override, the initiate input and

the select input. When the UCP senses a

continuous closed condition on the

initiate input at the low voltage terminal

board the unit will begin ventilation

override depending on the condition of

the select input.The default condition of

the select input is exhaust (input open).

A closed select input will yield

Unoccupied Zone Temperature Control

Cooling and Heating

Both cooling or heating modes can be

selected to maintain Unoccupied zone

temperature setpoints. For Unoccupied

periods, heating or primary cooling

operation can be selectively locked out at

the remote panels orTRACER.

Supply AirTempering

This feature is available only with

TRACER® or with systems using

programmable zone sensors (CV only

with economizer). For gas and electric

heat units in the Heat mode but not

actively heating, if the supply air

temperature drops to 10 F below the

occupied zone heating temperature

setpoint, one stage of heat will be

brought on to maintain a minimum

supply air temperature.The heat stage is

dropped if the supply air temperature

ConventionalThermostat Interface

An interface is required to use a

conventional thermostat instead of a

zone sensor module with the UCP.The

ConventionalThermostat Interface (CTI)

is connected between conventional

thermostat and the UCP and will allow

only two steps of heating or cooling.The

pressurization.The component state

matrix for ventilation override is

as follows:

System Com ponent Exhaust

Pressurization

Heat/Cool

off

closed

off

open

IGV

Supply Fan

Exhaust Fan

Outside Air Damper

Return Air Damper

VAV Boxes

off

closed

open

n/a

open

closed

open

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Coil Freeze Protection FROSTAT™

Night setback (unoccupied mode) is

operated through the time clock

Timed override Activation—Non-lCS

The FROSTAT system eliminates the

need for hot gas bypass and adds a

suction line surface temperature sensor

to determine if the coil is in a condition

of impending frost. If impending frost is

detected primary cooling capacity is

shed as necessary to prevent icing. All

compressors are turned off after they

have met their minimum 3 minute on

times.The supply fan is forced on until

the FROSTAT device no longer senses a

frosting condition or for 60 seconds after

the last compressor is shut off,

When this function is initiated by the

push of an override button on the

programmable zone sensor, the unit will

switch to the occupied mode. Automatic

Cancellation of theTimed override Mode

occurs after three hours of operation.

provided in the sensors with night

setback. When the time clock switches to

night setback operation, the outdoor air

dampers close and heating/cooling can

be enabled or disabled. As the building

load changes, the night setback sensor

communicates the need for the rooftop

heating/cooling (if enabled) function and

the evaporator fan.The rooftop unit will

cycle through the evening as heating/

cooling (if enabled) is required in the

space.When the time clock switches

from night setback to occupied mode, all

heating/cooling functions begin normal

operation.

Comparative Enthalpy Control of

Economizer

The Unitary Economizer Module (UEM)

receives inputs from optional return air

humidity and temperature sensors and

determines whether or not it is feasible

to economize. If the outdoor air enthalpy

is greater than the return air enthalpy

then it is not feasible to economize and

the economizer damper will not open

past its minimum position.

whichever is longer.

Occupied/Unoccupied Switching

There are 3 ways to switch Occupied/

Unoccupied:

When using the night setback options

with a VAV heating/cooling rooftop,

airflow must be maintained through the

rooftop unit.This can be accomplished

by electrically tying the VAV boxes to the

VAV heat relay contacts on the Low

voltage terminal board or by using

changeover thermostats. Either of these

methods will assure adequate airflow

through the unit and satisfactory

Fan Failure Switch

NSB Panel

The fan failure switch will disable all unit

functions and “flash” the Service LED on

the zone sensor.

Electronic time clock or field-supplied

contact closure

Emergency Stop Input

A binary input is provided on the UCP for

installation of field provided switch or

contacts for immediate shutdown of all

unit functions.The binary input is

brought out to Low VoltageTerminal

Board One (LTB1).

temperature control of the building.

TRACER

Timed override Activation—ICS

Night Setback Sensors

When this function is initiated by

Trane’s night setback sensors are

programmable with a time clock function

that provides communication to the

rooftop unit through a 2-wire

communications link.The desired

transition times are programmed at

the night setback sensor and

pushing the override button on the ICS

sensor,TRACER will switch the unit to

the occupied mode. Unit operation

(occupied mode) during timed override

is terminated by a signal from TRACER.

communicated to the unit.

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Electrical

Data

DSS = 1.15 x (LOAD1 + LOAD2 + LOAD4)

Select a fuse rating equal to the MOP

value. If the MOP value does not equal a

standard fuse size as listed in NEC 240-6,

select the next lower standard fuse

rating. NOTE: If selected MOP is less

than the MCA, then reselect the lowest

standard maximum fuse size which is

equal to or larger than the MCA,

Electrical Service Sizing

To correctly size electrical service

wiring for your unit, find the

Select a disconnect switch size equal to

or larger than the DSS value calculated.

appropriate calculations listed below.

Each type of unit has its own set of

calculations for MCA (Minimum Circuit

Ampacity), MOP (Maximum

Overcurrent Protection), and RDE

(Recommended Dual Element fuse

size). Read the load definitions that

follow and then find the appropriate

set of calculations based on your unit

type.

Set 2. Rooftop units with Electric Heat

To arrive at the correct MCA, MOP, and

RDE values for these units, you must

perform two sets of calculations. First

calculate the MCA, MOP, and RDE values

as if the unit was in cooling mode (use

the equations given in Set 1).Then

calculate the MCA, MOP, and RDE values

as if the unit were in the heating mode as

follows.

provided the reselected fuse size does

not exceed 800 amps.

RDE = (1.5 x LOAD1) + LOAD2 + LOAD3 +

LOAD4

The selection RDE value will be the

larger of the cooling mode RDE value or

the heating mode RDE value calculated

above.

Set 1 is for cooling only and cooling

with gas heat units, and set 2 is for

cooling with electric heat units.

(Keep in mind when determining LOADS

that the compressors and condenser

fans don’t run while the unit is in the

heating mode).

Select a fuse rating equal to the RDE

value. If the RDE value does not equal a

standard fuse size as listed in NEC 240-6,

select the next higher standard fuse

rating. NOTE: If the selected RDE is

greater than the selected MOP value,

then reselect the RDE value to equal the

MOP value.

Load Definitions: (To determine load

values, see the Electrical Service Sizing

DataTables.)

For units using heaters less than 50 kw.

MCA = 1.25 x (LOAD1 + LOAD2 + LOAD4)

+ (1.25 x LOAD3)

LOAD1 = CURRENT OFTHE LARGEST

MOTOR (COMPRESSOR OR FAN

MOTOR)

For units using heaters equal to or

greater than 50 kw.

LOAD2 = SUM OFTHE CURRENTS OF

ALL REMAINING MOTORS

MCA = 1.25 x (LOAD1 + LOAD2 + LOAD4)

+ LOAD3

DSS = 1.15 x (LOAD1 + LOAD2 + LOAD3 +

LOAD4)

LOAD3 = CURRENT OF ELECTRIC

HEATERS

The nameplate MCA value will be the

larger of the cooling mode MCA value or

the heating mode MCA value calculated

above.

NOTE: Keep in mind when determining

LOADS that the compressors and

condenser fans don’t run while the unit

is in the heating mode.

LOAD4 = ANY OTHER LOAD RATED AT

1 AMP OR MORE

Set 1. Cooling Only Rooftop Units and

Cooling with Gas Heat Rooftop Units

MOP = (2.25 x LOAD1) + LOAD2 + LOAD3

+ LOAD4

The selection DSS value will be the

larger of the cooling mode DSS or the

heating mode DSS calculated above.

MCA = (1.25 x LOAD1) + LOAD2 +

LOAD4

The selection MOP value will be the

larger of the cooling mode MOP value or

the heating mode MOP value calculated

above.

Select a disconnect switch size equal to

or larger than the DSS value calculated.

MOP = (2.25 x LOAD1) + LOAD2 +

LOAD4

Select a fuse rating equal to the MOP

value. If the MOP value does not equal

a standard fuse size as listed in NEC

240-6, select the next lower standard

fuse rating. NOTE: If selected MOP is

less than the MCA, then reselect the

lowest standard maximum fuse size

which is equal to or larger than the

MCA, provided the reselected fuse size

does not exceed 800 amps.

Table ED-1 —Ton Electrical Service Sizing Data — Electric Heat Module (Electric Heat Only)

Models:TED/TEH 330 thru 600

Electric Heat FLA

Nominal

Unit Size

(Tons)

Nominal

Unit

Voltage

KW Heater

FLA

74.9

FLA

112.4

FLA

—

FLA

—

108

FLA

—

27½

30.0

35.0

208

230

460

86.6

43.3

129.9

65.0

—

RDE = (1.5 x LOAD1) + LOAD2 + LOAD4

86.6

108.3

Select a fuse rating equal to the RDE

value. If the RDE value does not equal

a standard fuse size as listed in NEC

240-6, select the next higher standard

fuse rating. NOTE: If the selected RDE

is greater than the selected MOP value,

then reselect the RDE value to equal

the MOP value.

575

208

—

52.0

112.4

69.3

—

86.6

—

40.0

50.0

230

460

575

—

129.9

65.0

—

86.6

69.3

108.3

86.6

129.9

103.9

52.0

Notes:

1. All FLA in this table are based on heater operating at 208, 240, 480, and 600 volts.

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Electrical

Data

Table ED-2 — 27½-50Ton Electrical Service Sizing Data¹

Fan Motors

Condenser

Compressor

Supply

Standard/

Hi-Efficiency

FLA

Exhaust

Allowable

Voltage

Characteristics Range

Electrical

RLA

(Ea.)

LRA

(Ea.)

269/409

FLA

(Ea.)

6.7

Model

No/Ton

7.5

10.0

7.5

10.0

7.5

10.0

7.5

10.0

7.5

10.0

7.5

10.0

7.5

10.0

7.5

10.0

7.5

10.0

15.0

7.5

10.0

15.0

7.5

10.0

15.0

7.5

No.

1.1

(Ea.)

7.0

No.

1.0

TC/TE/YC*330

208/60/3

230/60/3

460/60/3

575/60/3

208/60/3

230/60/3

460/60/3

575/60/3

208/60/3

187-229

207-253

414-506

517-633

187-229

207-253

414-506

517-633

187-229

1/10,1/15

41.9/62.8

22.3/21.5

29.7/29.0

19.6/18.8

26.4/25.2

9.8/9.4

41.9/62.8

18.1/27.3

14.6/21.8

62.8

247/376

95/142

76/114

409

7.0

3.5

2.8

7.0

6.7

2.9

2.3

6.7

2.9

2.3

6.7

13.2/12.6

7.8/7.5

10.3/10.1

22.3/21.5

29.7/29.0

19.6/18.8

26.4/25.2

9.8/9.4

TC/TE/YC*360

TC/TE/YC*420

2/15

1.1

1.0

62.8

376

7.0

27.3

142

3.5

2.8

7.0

13.2/12.6

7.8/7.5

21.8

114

10.3/10.1

22.3/21.5

29.7/29.0

44.4/41.5

19.6/18.8

26.4/25.2

38.6/36.0

9.8/9.4

62.8

409

230/60/3

460/60/3

575/60/3

207-253

414-506

517-633

62.8

27.3

21.8

376

142

114

7.0

3.5

2.8

6.7

2.9

2.3

13.2/12.6

19.3/18.0

7.8/7.5

10.0

15.0

10.0

15.0

10.0

15.0

10.0

15.0

10.0

15.0

10.0

15.0

20.0

10.0

15.0

20.0

10.0

15.0

20.0

10.0

15.0

20.0

10.3/10.1

15.4/14.5

29.7/29.0

44.4/41.5

26.4/25.2

38.6/36.0

13.2/12.6

19.3/18.0

10.3/10.1

15.4/14.5

29.7/29.0

44.4/41.5

58.7/56.1

26.4/25.2

38.6/36.0

51.0/49.4

13.2/12.6

19.3/18.0

25.5/24.7

10.3/10.1

15.4/14.5

20.4/19.6

TC/TE/YC*480

TC/TE/YC*600

208/60/3

230/60/3

460/60/3

575/60/3

208/60/3

187-229

207-253

414-506

517-633

187-229

2/15,1/10

62.8/62.8/41.9 409/409/269

62.8/62.8/41.9 376/376/247

1.1

7.0

3.5

2.8

7.0

1.0

6.7

2.9

2.3

6.7

27.3/27.3/18.1

21.8/21.8/14.6

62.8

142/142/95

114/114/76

409

3/15

230/60/3

460/60/3

575/60/3

207-253

414-506

517-633

62.8

27.3

21.8

376

142

114

7.0

3.5

2.8

6.7

2.9

2.3

Notes:

1. All customer wiring and devices must be installed in accordance with local and national electrical codes.

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Dim ensional

Data

Figure DD-1 — 27 1/2 - 35Tons (TC,TE,YC Low Heat)

NOTES:

1. ALL DIMENSIONS INCHES.

2. THRU-BASE ELECTRICAL LOCATIONS

ARE PRESENT ONLY WHEN OPTION

IS ORDERED.

1/16

NOTE: The Two Horizontal Power

Exhaust Hoods and the three

Horizontal Fresh Air Hoods are

located side by side. The Fresh

Air Hoods (not shown) extend only

23 15/16” from the end of the unit.

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Dim ensional

Data

Figure DD-2 — 27 1/2 - 35Tons (YC High Heat)

NOTES:

1. ALL DIMENSIONS INCHES.

2. THRU-BASE ELECTRICAL LOCATIONS

ARE PRESENT ONLY WHEN OPTION

IS ORDERED.

1/16

3”

NOTE: The Two Horizontal Power

Exhaust Hoods and the three

Horizontal Fresh Air Hoods are

located side by side. The Fresh

Air Hoods (not shown) only extend

23 15/16” from the end of the unit.

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Dim ensional

Data

NOTES:

Figure DD-3 — 40-50Tons (TC,TE,YC Low & High Heat)

1. ALL DIMENSIONS INCHES.

2. THRU-BASE ELECTRICAL LOCATIONS

ARE PRESENT ONLY WHEN OPTION

IS ORDERED.

1/16

4”

NOTE: The Two Horizontal Power

Exhaust Hoods and the three

Horizontal Fresh Air Hoods are

located side by side. The Fresh

Air Hoods (not shown) only extend

23 15/16” from the end of the unit.

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Dim ensional

Data

(Variable Air

Volum e VAV)

Field Installed Sensors

SINGLE SETPOINT SENSORWITH SYSTEM FUNCTION LIGHTS (BAYSENS021*)

PROGRAMMABLE NIGHT-SETBACK SENSOR (BAYSENS020*)

Note:

1. Rem ote sensors are available for use with all zone sensors to provide rem ote sensing capabilities.

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Dim ensional

Data

(Constant

Volum e CV)

Field Installed Sensors

PROGRAMMABLE NIGHT-SETBACK SENSOR (BAYSENS019*)

DUAL SETPOINT, MANUAL/AUTOMATIC

CHANGEOVER SENSORWITH SYSTEM

FUNCTION LIGHTS (BAYSENS010*)

WITHOUT LED STATUS INDICATORS

(BAYSENS008*)

SINGLE SETPOINTWITHOUT

LED STATUS INDICATORS (BAYSENS006*)

Note:

1. Rem ote sensors are available for use with all zone sensors to provide rem ote sensing capabilities.

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Dim ensional

Data

(CV and VAV)

Integrated Comfort™ System Sensors

ZONETEMPERATURE SENSORW/TIMED OVERRIDE BUTTONS

ZONETEMPERATURE SENSORW/TIMED OVERRIDE BUTTON

AND LOCAL SETPOINT ADJUSTMENT (BAYSENS014)¹

(BAYSENS013*) ALSO AVAILABLE SENSOR ONLY (BAYSENS017*)

REMOTE MINIMUM POSITION POTENTIOMETER CONTROL (BAYSTAT023*)

TEMPERATURE SENSOR (BAYSENS016*)

Note:

1. Rem ote sensors are available for use with all zone sensors to provide rem ote sensing capabilities.

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Weights

Table W-1 —Approximate Operating Weights — Lbs.²

Basic Unit Weights¹

Unit

Model

**D330

**H330

**D360

**H360

**D420

**H420

**D480

**H480

**D600

**H600

Low Heat

3650

3730

3815

4765

4790

High Heat

4012

3520

3565

3600

3685

4540

4710

3553

3598

3633

3718

4575

4745

4077

4092

4142

4177

4227

4885

4915

5055

4935

4960

5085

Notes:

1. Basic unit weight includes m inim um HP Supply Fan m otor.

2. Optional high static and high efficiency m otor weights are in addition to the standard

m otor weight included in the basic unit weight.

Table W-2 — Point Loading Average Weight¹

1196

1209

1238

1242

1265

1269

1527

1532

1598

1602

Note:

1159

1171

1199

1203

1226

1230

1480

1485

1549

1553

673

680

696

699

712

714

859

862

899

902

710

718

735

737

751

754

907

910

949

951

673

680

696

699

712

714

859

862

899

902

710

718

735

737

751

754

907

910

949

951

TOP VIEW

OF UNIT

COMPRS

1. Point Loading is identified with corner A being the corner with the

com pressors. As you m ove clockwise around the unit as viewed

from the top, m id-point B, corner C, corner D, m id-point E and

corner F.

Table W-3 — Component Weights

Weights of Optional Components

Variable

Hi-Static/

Hi-Eff

Factory

GFI with

Roof

Curb

0-25%

Inlet

Frequency

Thru-the Non-Fused

Unit Barometric Power Supply Fan Manual

Guide

Drives (VFD's)

Service Base Disconnect Disconnect

Weights

Model

**D330

**H330

**D360

**H360

**D420

**H420

**D480

**H480

**D600

**H600

Relief

110

145

110

145

110

145

110

145

110

145

Exhaust Motors (2) Damper Econo Vanes W/O Bypass With Bypass Valves Electric

Switch

330

165

200

165

200

165

200

165

200

165

200

120

125

260

285

260

285

260

285

290

300

290

300

115

150

310

115

365

Table W-4 — Minimum Operating Clearances for Unit Installation

Condenser Coil

End / Side

8 Feet / 4 Feet

16 Feet / 8 Feet

Service Side

Access

4 Feet

Econo/Exhaust End

6 Feet

Single Unit¹

Multiple Unit^1,3

12 Feet

8 Feet

Notes:

1. Horizontal and Downflow Units, all sizes.

2. Condenser coil is located at the end and side of the unit.

3. Clearances on multiple unit installations are distances between units.

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Mechanical

Specifications

General

chamber which leads to increased

Electric Heaters

efficiency. Exhaustive testing on the 3-D

Scroll, including start up with the shell

full of liquid, has proven that slugging

does not fail involutes. Direct-drive, 3600

rpm, suction gas-cooled hermetic motor.

Trane 3-D Scroll compressor includes

centrifugal oil pump, oil level sightglass

and oil charging valve. Each compressor

shall have crankcase heaters installed,

properly sized to minimize the amount of

liquid refrigerant present in the oil sump

during off cycles.

The units shall be dedicated downflow

or horizontal airflow.The operating range

shall be between 115 F and 0 F in cooling

as standard from the factory for all units.

Cooling performance shall be rated in

accordance with ARI testing procedures.

All units shall be factory assembled,

internally wired, fully charged with

HCFC-22 and 100% run tested to check

cooling operation, fan and blower

rotation and control sequence before

leaving the factory.Wiring internal to the

unit shall be numbered for simplified

identification. Units shall be UL listed

and labeled, classified in accordance to

UL 1995/CAN/CSA No. 236-M90 for

Central Cooling Air Conditioners.

Electric heat shall be available for factory

installation within basic unit. Electric

heater elements shall be constructed of

heavy-duty nickel chromium elements

internally delta connected for 240 volt,

wye connected for 480 and 600 volt.

Staging shall be achieved through the

unitary control processor (UCP). Each

heater package shall have automatically

reset high limit control operating

through heating element contactors. All

heaters shall be individually fused from

factory, where required, and meet all

NEC and CEC requirements. Power

assemblies shall provide single-point

connection. Electric heat shall be UL

listed or CSA certified.

Refrigerant Circuits

Each refrigerant circuit shall have

independent thermostatic expansion

devices, service pressure ports and

refrigerant line filter driers factory-

installed as standard. An area shall be

provided for replacement suction line

driers.

Canadian units shall be CSA Certified.

Gas Heating Section

Casing

The heating section shall have a drum

and tube heat exchanger(s) design using

corrosion resistant steel components. A

forced combustion blower shall supply

premixed fuel to a single burner ignited

by a pilotless hot surface ignition

system. In order to provide reliable

operation, a negative pressure gas valve

shall be used that requires blower

operation to initiate gas flow. On an

initial call for heat, the combustion

blower shall purge the heat exchanger(s)

45 seconds before ignition. After three

unsuccessful ignition attempts, the entire

heating system shall be locked out until

manually reset at the thermostat. Units

shall be suitable for use with natural gas

or propane (field installed kit) and also

comply with California requirements for

low NOx emissions. All units shall have

two stage heating.

Unit casing shall be constructed of zinc

coated, heavy gauge, galvanized steel.

All components shall be mounted in a

weather resistant steel cabinet with a

painted exterior.Where top cover seams

exist, they shall be double hemmed and

gasket sealed to prevent water leakage.

Cabinet construction shall allow for all

maintenance on one side of the unit.

Service panels shall have handles and

shall be removable while providing a

water and air tight seal. Control box

access shall be hinged.The indoor air

section shall be completely insulated

with fire resistant, permanent, odorless

glass fiber material.The base of the unit

shall have provisions for crane lifting.

Evaporator and Condenser Coils

Condenser coils shall have /₈” copper

tubes mechanically bonded to lanced

aluminum plate fins. Evaporator coils

shall be /₂” internally finned copper

tubes mechanically bonded to high

performance aluminum plate fins. All

coils shall be leak tested at the factory to

ensure pressure integrity. All coils shall

be leak tested to 200 psig and pressure

tested to 450 psig. All dual circuit

evaporator coils shall be of intermingled

configuration. Sloped condensate drain

pans are standard.

Outdoor Fans

The outdoor fan shall be direct-drive,

statically and dynamically balanced,

draw through in the vertical discharge

position.The fan motor(s) shall be

permanently lubricated and have built-in

thermal overload protection.

Filters

Two inch, throwaway filters shall be

standard on all size units.Two inch “high

efficiency”, and four inch “high

Controls

efficiency” filters shall be optional.

Unit shall be completely factory wired

with necessary controls and terminal

block for power wiring. Units shall

provide an external location for

mounting fused disconnect device.

Microprocessor controls shall be

provided for all 24 volt control functions.

The resident control algorithms shall

Compressors

Indoor Fan

Trane 3-D^®Scroll compressors have a

simple mechanical design with only

three major moving parts. Scroll type

compression provides inherently low

vibration.The 3-D Scroll provides a

completely enclosed compression

Units shall have belt driven, FC,

centrifugal fans with fixed motor

sheaves. All motors shall be circuit

breaker protected. All indoor fan motors

meet the U.S. Energy Policy Act of 1992

(EPACT).

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Mechanical

Specifications

make all heating, cooling and/or

ventilating decisions in response to

electronic signals from sensors

sequences shall be selectable based

open a binary select input.

GFI Convenience Outlet (Factory

Powered)

Outside Air

A 15A, 115V Ground Fault Interrupter

convenience outlet shall be factory

installed. It shall be wired and powered

from a factory mounted transformer.

Unit mounted non-fused disconnect with

external handle shall be furnished with

factory powered outlet.

measuring indoor and outdoor

Manual Outside Air

temperatures.The control algorithm

maintains accurate temperature control,

minimizes drift from set point and

provides better building comfort. A

centralized microprocessor shall provide

anti-short cycle timing and time delay

between compressors to provide a

higher level of machine protection.

A manually controllable outside air

damper shall be adjustable for up to 25

percent outside air. Manual damper is

set at desired position at unit start up.

Economizer

GFI Convenience Outlet (Field Powered)

Economizer shall be factory installed.The

assembly includes: fully modulating 0-

100 percent motor and dampers,

minimum position setting, preset

linkage, wiring harness, and fixed dry

bulb control. Solid state enthalpy and

differential enthalpy control shall be a

factory or field installed option.

A 15A, 115V Ground Fault Interrupter

convenience outlet shall be factory

installed and shall be powered by

customer provided 115V circuit.

Control Options

Inlet Guide Vanes shall be installed on

each fan inlet to regulate capacity and

limit horsepower at lower system

requirements.When in any position

other than full open they shall pre-spin

intake air in the same direction as fan

rotation.The inlet guide vanes shall close

when supply fan is off, except in night

setback.

Hinged Service Access

Filter access panel and supply fan access

panel shall be hinged for ease of unit

service.

Exhaust Air

Condenser Coil Guards

Barometric Relief

Factory installed condenser vinyl coated

wire mesh coil guards shall be available

to provide full area protection against

debris and vandalism.

The barometric relief damper shall be

optional with the economizer. Option

shall provide a pressure operated

damper for the purpose of space

pressure equalization and be gravity

closing to prohibit entrance of outside air

during the equipment “off” cycle.

The inlet guide vane actuator motor shall

be driven by a modulating dc signal

from the unit microprocessor. A pressure

transducer shall measure duct static

pressure and modulate the inlet guide

vanes to maintain the required supply air

static pressure within a predetermined

range.

LonTalk Communication Interface

Available either field or factory-installed

for constant volume units. When

Power Exhaust Fan

installed on a constant volume unit, this

LonTalk board will allow the unit to

communicate as aTrane Comm5 device

or directly with generic LonTalk Network

Building Automation System Controls.

Power exhaust shall be available on all

units and shall be factory installed. It

shall assist the barometric relief damper

in maintaining building pressurization.

Variable Frequency Drives (VFDs)

VFDs shall be factory installed and tested

to provide supply fan motor speed

modulation.The VFD shall receive a 2-

10 VDC signal from the unit

microprocessor based upon supply

static pressure and shall cause the drive

to accelerate or decelerate as required to

maintain the supply static pressure

setpoint. When subjected to high

ambient return conditions the VFD shall

reduce its output frequency to maintain

operation. Bypass control to provide full

nominal air flow in the event of drive

failure shall be optional.

Stainless Steel Drain Pans

Unit Options

Service Valves

Sloped stainless steel evaporator coil

drain pans are durable, long-lasting and

highly corrosion resistant.

Service valves shall be provided factory

installed and include suction, liquid, and

discharge 3-way shutoff valves.

Black Epoxy Coated Condenser Coil

The coil provides corrosion protection to

condenser coils for seacoast application.

The protection is a factory applied

thermoset vinyl coating, bonded to

normal aluminum fin stock.The uniform

thickness of the bonded vinyl layer

exhibits excellent corrosion protection in

salt spray tests performed in accordance

with ASTM B117.

Through-The-Base Electrical Provision

An electrical service entrance shall be

provided which allows access to route all

high and low voltage electrical wiring

inside the curb, through the bottom of

the outdoor section of the unit and into

the control box area.

Ventilation Override

Ventilation Override shall allow a binary

input from the fire/life safety panel to

cause the unit to override standard

operation and assume one of two

factory preset ventilation sequences,

exhaust or pressurization.The two

Non-Fused Disconnect Switch

A factory installed non-fused disconnect

switch with external handle shall be

provided and shall satisfy NEC

requirements for a service disconnect.

The non-fused disconnect shall be

mounted inside the unit control box.

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Mechanical

Specifications

• Outside air temperature

• Outside relative humidity

• Sensor Failure

Humidity sensor

OAT sensor

SAT sensor

RAT sensor

Zone temperature sensor

Mode input

Zone Sensors

Accessories

Roof Curb

Shall be provided to interface with the

Micro unit controls and shall be available

in either manual, automatic

programmable with night setback, with

system malfunction lights or remote

sensor options.

The roof curb shall be designed to mate

with the unit and provide support and a

water tight installation when installed

properly.The roof curb design shall allow

field-fabricated rectangular supply/return

ductwork to be connected directly to the

curb when used with downflow units.

Curb design shall comply with NRCA

requirements. Curb shall ship knocked

down for field assembly and include

wood nailer strips.

ConventionalThermostat Interface (CTI)

Cooling/heating setpoints from

sensors

This field installed circuit board shall

provide interface with electromechanical

thermostats or automation systems. Not

available with VAV system control.

Static pressure transducer

Unit mounted potentiometer

SAT from potentiometer

Air reset setpoint from potentiometer

• Unit Configuration data

Gas or electric heat

Economizer present

• High temp input status

• Local setpoint

Differential Pressure Switches

Trane Communication Interface (TCI)

This field installed option allows dirty

filter indication. The dirty filter switch will

light the Service LED on the zone sensor

and will allow continued unit operation.

Shall be provided to interface with the

Trane Integrated Comfort™ System and

shall be available factory installed.The

TCI shall allow control and monitoring of

the rooftop unit via a two-wire

Remote Potentiometer

• Local mode setting

• Inlet Guide Vane position

communication link.

A remote potentiometer shall be

available to remotely adjust the unit

economizer minimum position.

The following alarm and diagnostic

information shall be available:

Tracer Originated Data

• Command operating mode

• Host controllable functions:

Supply fan

High Temperature Thermostats

UCP Originated Data

• Unit operating mode

• Unit failure status

Cooling failure

Heating failure

Emergency service stop indication

Supply fan proving

Timed override activation

High temperature thermostat status

• Zone temperature

• Supply air temperature

• Cooling status (all stages)

• Stage activated or not

• Stage locked out by UCP

• HPC status for that stage

• Compressor disable inputs

• Heating status

• Number of stages activated

• High temperature limit status

• Economizer status

• Enthalpy favorability status

• Requested minimum position

• Damper position

Field installed, manually resettable high

temperature thermostats shall provide

input to the unit controls to shut down

the system if the temperature sensed at

the return is 135 F or at the discharge

240 F.

Economizer

Cooling stages enabled

Heating stages enabled

Emergency shutdown

• Minimum damper position

• Heating setpoint

Reference Enthalpy Kit

• Cooling setpoint

• Supply air tempering enable/disable

• Slave mode (CV only)

• Tracer/Local operation

• SAT setpoint

• Reset setpoint

• Reset amount

Field installed enthalpy kit shall provide

inputs for economizer control based

upon comparison of the outside air

stream to a definable enthalpy reference

point. May also be factory installed.

Comparative Enthalpy Kit

• MWU setpoint

Field installed enthalpy kit shall provide

inputs for economizer control based

upon comparison of the enthalpies of

the return and outdoor air streams. Also

available factory installed.

• MWU enable/disable

• SAT Reset type select

• Static pressure setpoint

• Static pressure deadband

• Daytime warm-up enable/disable

• Power exhaust setpoint

• Dry bulb/enthalpy input status

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Mechanical

Specifications

LP Conversion Kit

BAYSENS017* — Remote Sensor can be

used for remote zone temperature

sensing capabilities when zone sensors

are used as remote panels or as a

morning warm-up sensor for use with

VAV units or as a zone sensor withTracer

Integrated Comfort system.

Field installed conversion kit shall

provide orifice(s) for simplified

conversion to liquefied propane gas. No

change of gas valve shall be required.

BAYSENS006* — Zone Sensor has one

temperature setpoint lever, heat, off or

cool system switch, fan auto or fan on

switch. Manual changeover.These

sensors are for CV units only.

BAYSENS019* & BAYSENS020* —

Electronic programmable sensors with

auto or manual changeover with seven

day programming. Keyboard selection of

heat, cool, auto fan or on. All

programmable sensors have System on,

Heat, Cool, Service LED/LCD indicators

as standard. Night setback sensors have

two occupied, and two unoccupied

programs per day. Sensors are available

for CV zone temperature control and VAV

zone temperature control.

BAYSENS008* — Zone Sensor has two

temperature setpoint levers, heat, auto,

off, or cool system switch, fan auto or fan

on switch. Auto changeover.These

sensors are used with CV units.

BAYSENS010* — Zone Sensor has two

temperature set point levers, heat, auto,

off, or cool system switch, fan auto or fan

on switch. Status indication LED lights,

System on, Heat, Cool, and Service are

provided.These sensors are used with

CV units.

BAYSENS021* — Zone Sensor with

supply air single temperature setpoint

and AUTO/OFF system switch. Status

indication LED lights, System ON, Heat,

Cool, and Service are provided. Sensors

are available to be used with VAV units.

BAYSENS013* — Zone temperature

sensor with timed override buttons used

with Tracer® Integrated Comfort system.

BAYSTAT023* — Remote Minimum

Position Potentiometer is used to

remotely specify the minimum

economizer position.

BAYSENS014* — Zone temperature

sensor with local temperature

adjustment control and timed override

buttons used withTracer Integrated

Comfort system. May also be used for

Morning Warm-up setpoint and sensor.

BAYSENS016* —Temperature Sensor is

a bullet or pencil type sensor that could

be used for temperature input such as

return air duct temperature.

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(20-60Ton)

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Literature Order Number

File Number

RT-PRC007-EN

PL-RT-TC/TE/YC-27½ - 50-TONS-PRC0007-EN-10-2001

RT-PRC007-EN 02/01

Supersedes

The Trane Com pany

An Am erican Standard Com pany

w w w .trane.com

Stocking Location

Inland-LaCrosse

For more information contact your

local district office, or e-mail us at

comfo[email protected]

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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