581J
GAS HEAT/ELECTRIC COOLING
PACKAGED ROOFTOP
3 to 8.5 NOMINAL TONS
Product Data
TM
C10405
the environmentally sound refrigerant
C10222
E2010 Bryant Heating & Cooling Systems D 7310 W. Morris St. D Indianapolis, IN 46231
Printed in U.S.A.
Edition Date: 4/10
Catalog No.PDS581J---01
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Replaces: NEW
FEATURES AND BENEFITS
S Single-stage cooling capacity control on 04 to 07 models
S Two-stage cooling capacity control on 08 and 09 models
S SEER up to 15.6
S EER up to 13.0
S IEER’s up to 13.0
S Exclusive non-corrosive composite condensate pan in accordance with ASHRAE 62 Standard, sloping design; side or
center drain
S Gas efficiencies up to 82%
S Induced draft combustion design
S Redundant gas valve, with up to 2 stages of heating
S Pre-painted exterior panels and primer-coated interior panels tested to 500 hours salt spray protection
S TXV refrigerant metering system on each circuit
S Fully insulated cabinet
S Exclusive IGC solid-state control for on-board diagnostics with LED error code designation, burner control logic and
energy saving indoor fan motor delay
S Dedicated 3-5 ton “Low NOx” models available that meet California Air Quality Management NOx requirement of 40
nangram/joule or less. Low NOx models include stainless steel heat exchangers
S Cooling operating range up to 125_F (52_C), and down to 35_F (2_C) standard
S Access panels with easy grip handles
S Innovative , easy starting, no-strip screw feature on unit access panels
S Two-inch disposable return air filters
S Tool-less filter access door
S Belt drive evaporator-fan motor and pulley combinations available on all three phase models
S Electric Drive x13 (5 speed/torque) motor on 04 to 06 models
S New terminal board facilitating simple safety circuit troubleshooting and simplified control box arrangement
S Field Convertible from vertical to horizontal airflow for slab mounting. No special kits required
S Provisions for thru-the-bottom power entry capability as standard
S Single point gas and electric connections
S Full perimeter base rail with built-in rigging adapters and fork truck slots
S Scroll compressors with internal line-break overload protection
S 24-volt control circuit protected with resettable circuit breaker
S Permanently lubricated evaporator-fan motor
S Totally enclosed condenser motors with permanently lubricated bearings
S Low Pressure switch and high-pressure switch protection
S Exclusive IGC anti-cycle protection for gas heat operation
S Solid-state electronic direct spark ignition system
S Flame roll-out safety protector
S Liquid line filter drier on each circuit
S Standard Warranty: 10 yr. aluminized heat exchanger, 15 yr. stainless steel heat exchanger, 5 yr. compressor, 1 yr. parts.
3
MODEL NUMBER NOMENCLATURE
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15 16 17 18
5
8
1
J
E
0
6
A
0
7
2
A
0
A
0
A
A
--
____________
______
________
______
Unit Type
Design Revision
581J = Cooling/Gas Heat RTU
--- --- F ir st R e v isio n
Legacy Series w/Puron Refrigerant
Packaging
A --- S t a n d a r d
B --- LT L
Voltage
Factory Installed Options
E = 4 6 0 --- 3 --- 6 0
J = 208/230---1---60
P = 208/230---3---60
T = 5 7 5 --- 3 --- 6 0
Outdoor Air Options
A = None
B = Temp econo w/ baro relief
E = Temp econo w/ baro relief & CO
H = Enthalpy econo w/ baro relief
Cooling Tons
04 = 3 Ton
05 = 4 Ton
06 = 5 Ton
07 = 6 Ton
08 = 7.5 Ton
09 = 8.5 Ton
2
L = Enthalpy econo w/ baro relief & CO
Q = Motorized 2 pos damper
2
Indoor Fan Options
1 = Standard static option
2 = Medium static option
3 = High static option
Refrig. System/Gas Heat Options
C o i l O p t i o n s ( o u t d o o r --- i n d o o r --- h a i l g u a r d )
A = Al/Cu ---Al/Cu
A = 1---Stage Cooling/Nat gas heat
B = 1 --- St a g e C o o li n g / L o w N O heat
x
B = P r e co a t A l/ C u --- A l/ C u
C = E --- co a t A l/ C u --- A l/ C u
D = E --- co a t A l/ C u --- E --- co a t A l/ C u
E = C u / C u --- A l/ C u
C = 1 --- St a g e C o o li n g S S H X
D = 2 --- St a g e C o o li n g 0 8 --- 0 9
F = 2 --- St a g e C o o li n g / S S H X
F = Cu/Cu --- Cu/Cu
M = A l/ C u --- A l/ C u --- L o u v e r e d H a il g u a r d s
N = P r e co a t A l/ C u --- A l/ C u --- L o u v e r e d H a il G u a r d s
P = E co a t A l/ C u --- A l/ C u --- L o u v e r e d H a il G u a r d s
Q = E co a t A l/ C u --- E co a t A l/ C u --- L o u v e r e d H a i l G u a r d s
R = C u / C u --- A l/ C u --- L o u v e r e d H a il G u a r d s
Heat Level (Input)
Standard/Stainless Steel
072 = 72,000
S = C u / C u --- C u / C u --- L o u v e r e d H a il G u a r d s
115 = 115,000
125 = 125,000
150 = 150,000
180 = 180,000
224 = 224,000
Low NO
x
060 = 60,000
090 = 90,000
120 = 120,000
4
TABLE 1 – FACTORY-INSTALLED OPTIONS AND FIELD-INSTALLED ACCESSORIES
FACTORY
INSTALLED
OPTION
FIELD
INSTALLED
ACCESSORY
CATEGORY
Cabinet
ITEM
Thru---the---base electrical or gas---line connections
Hinged access panels
Cu/Cu indoor and/or outdoor coils
Pre---coated outdoor coils
X
X
X
X
X
X
X
Coil Options
Premium, E---coated outdoor coils
Condenser Protection Condenser coil hail guard (louvered design)
Thermostats, temperature sensors, and subbases
RTU---MP open---protocol controller
X
X
X
X
Smoke detector (supply and/or return air)
Time Guard II compressor delay control circuit
Phase Monitor
EconoMi$ert IV (for electro---mechanical controlled RTUs)
EconoMi$ert2 (for DDC controlled RTUs)
Motorized 2 position outdoor---air damper
Manual outdoor---air damper (25% and 50%)
Controls
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Economizers
& Outdoor Air
Dampers
1
Barometric relief
Power exhaust
X
X
X
2
Single dry bulb temperature sensors
Differential dry bulb temperature sensors
2
Economizer Sensors
2
Single enthalpy sensors
&
2
Differential enthalpy sensors
IAQ Devices
2
Wall or duct mounted CO2 sensor
2
Unit mounted CO2 sensor
X
X
Propane conversion kit
Stainless steel heat exchanger
High altitude conversion kit
Flue Shield
Flue Discharge Deflector
Multiple motor and drive packages
X
X
X
X
Gas Heat
Indoor Motor & Drive
X
3
Winter start kit
X
X
Low Ambient
Control
3
Motormaster head pressure controller
Convenience outlet (powered)
Convenience outlet (unpowered)
Non---fused disconnect
X
X
X
Power
Options
Roof curb 14” (356mm)
Roof curb 24” (610mm)
X
X
Roof Curbs
NOTES:
1. Included with economizer.
2. Sensors used to optimize economizer performance.
3. See application data for assistance.
5
FACTORY OPTIONS AND/OR ACCESSORIES
Economizer (dry-bulb or enthalpy)
Power Exhaust with Barometric Relief
Economizers save money. They bring in fresh, outside air
for ventilation; and provide cool, outside air to cool your
building. This is the preferred method of low-ambient
cooling. When coupled to CO2 sensors, economizers can
provide even more savings by coupling the ventilation air
to only that amount required.
Superior internal building pressure control. This
field-installed accessory may eliminate the need for
costly, external pressure control fans.
RTU--MP, Multi--Protocol Controller
Connect the rooftop to an existing BAS without needing
complicated translators or adapter modules using the
RTU-MP controller. This new controller speaks the 4
most common building automation system languages
(Bacnet, Modbus, N2, and Lonworks). Use this controller
when you have an existing BAS.
Economizers are available, installed and tested by the
factory, with either enthalpy or dry-bulb temperature
inputs. There are also models for electromechanical as
well as direct digital controllers. Additional sensors are
available as accessories to optimize the economizers.
Time Guard II Control Circuit
Economizers include gravity controlled, barometric relief
equalizes building pressure and ambient air pressures.
This can be a cast effective solution to prevent building
pressurization.
This accessory protects your compressor by preventing
short-cycling in the event of some other failure, prevents
the compressor from restarting for 30 seconds after
stopping. Not required with RTU-MP or authorized
commercial thermostats.
CO Sensor
2
Improves productivity and saves money by working with
the economizer to intake only the correct amount of
outside air for ventilation. As occupants fill your building,
the CO2 sensor detects their presence through increasing
CO2 levels, and opens the economizer appropriately.
Motorized 2--Position Damper
The new Bryant 2-position, motorized outdoor air damper
admits up to 100% outside air. Using reliable, gear-driven
technology, the 2-position damper opens to allow
ventilation air and closes when the rooftop stops, stopping
unwanted infiltration.
When the occupants leave, the CO2 levels decrease, and
the sensor appropriately closes the economizer. This
intelligent control of the ventilation air, called Demand
Control Ventilation (DCV) reduces the overall load on the
rooftop, saving money.
Manual OA Damper
Manual outdoor air dampers are an economical way to
bring in ventilation air. The dampers are available in 25%
and 50% versions.
Smoke Detectors
Trust the experts. Smoke detectors make your application
safer and your job easier. Bryant smoke detectors
immediately shut down the rooftop unit when smoke is
detected. They are available, installed by the factory, for
supply air, return air, or both.
Hinged Access Panels
Allows access to unit’s major components with
specifically designed hinged access panels. Panels are:
filter, control box, fan motor and compressor.
Louvered Hail Guards
Sleek, louvered panels protect the condenser coil from
hail damage, foreign objects, and incidental contact.
Convenience Outlet (powered or un--powered)
Reduce service and/or installation costs by including a
convenience outlet in your specification. Bryant will
install this service feature at our factory. Provides a
convenient, 15 amp, 115v GFCI receptacle with “Wet in
Use” cover. The “powered” option allows the installer to
power the outlet from the line side of the disconnect or
load side as required by code. The “unpowered” option is
to be powered from a separate 115/120v power source.
Non--fused Disconnect
This OSHA-compliant, factory-installed, safety switch
allows a service technician to locally secure power to the
rooftop.
6
FACTORY OPTIONS AND/OR ACCESSORIES (CON’T)
Motormaster Head Pressure Controller
Flue Discharge Heat Shield
The Motormaster motor controller is a low ambient, head
pressure controller kit that is designed to maintain the
unit’s condenser head pressure during periods of low
ambient cooling operation. This device should be used as
an alternative to economizer free cooling not when
economizer usage is either not appropriate or desired. The
Motormaster will either cycle the outdoor-fan motors or
operate them at reduced speed to maintain the unit
operation, depending on the model.
The flue discharge heat shield keeps people from touching
the rooftop unit’s potentially hot flue discharge. This is
especially useful for ground level applications, where
more, untrained people could have access to the unit’s
exterior.
Alternate Motors and Drives
Some applications need larger horsepower motors, some
need more airflow, and some need both. Regardless of the
case, your Bryant expert has
a
factory installed
Winter Start Kit
combination to meet your application. A wide selection of
motors and pulleys (drives) are available, factory
installed, to handle nearly any application.
The winter start kit by Bryant extends the low ambient
limit of your rooftop to 25_F (-4_C). The kit bypasses the
low pressure switch, preventing nuisance tripping of the
low pressure switch. Other low ambient precautions may
still be prudent.
Thru--the--Base Connections
Thru-the-base connections, available as either an
accessory or as a factory option, are necessary to ensure
proper connection and seal when routing wire and piping
through the rooftop’s basepan and curb. These couplings
eliminate roof penetration and should be considered for
gas lines, main power lines, as well as control power.
Propane Heating
Convert your gas heat rooftop from standard natural gas
operation to Propane using this field-installed kit.
High Altitude Heating
High altitudes have less oxygen, which means heat
exchangers need less fuel. The new gas orifices in this
field-installed kit make the necessary adjustment for high
altitude applications. They restore the optimal fuel to air
mixture and maintain healthy combustion at altitudes
above 2000 ft (610m). Kits may not be required in all
areas.
Flue Discharge Deflector
The flue discharge deflector is a useful accessory when
flue gas recirculation is a concern. By venting the flue
discharge upwards, the deflector minimizes the chance for
a neighboring unit to intake the flue exhaust.
Optional Stainless Steel Heat Exchanger
The stainless steel heat exchanger option provides the
tubular heat exchanger be made out of a minimum 20
gauge type 409 stainless steel for applications where the
mixed air to the heat exchanger is expected to drop below
45_F (7_C). Stainless steel may be specified on
applications where the presence of airborne contaminants
require its use (applications such as paper mills) or in area
with very high outdoor humidity that may result in severe
condensation in the heat exchanger during cooling
operation.
7
TABLE 2 – AHRI COOLING RATING TABLE 1-STAGE COOLING
NET
NOM.
CAPACITY
(TONS)
COOLING
CAPACITY
(MBH)
COOLING
STAGES
TOTAL
POWER (kW)
UNIT
SEER
EER
IEER
04A
05A
06A
07A
1
1
1
1
3
4
5
6
36.0
48.5
57.5
73.0
2.9
3.7
4.6
6.0
15.00
15.60
15.20
N/A
12.50
13.00
12.45
12.00
N/A
N/A
N/A
13.00
TABLE 3 – AHRI COOLING RATING TABLE 2-STAGE COOLING
NET
NOM.
CAPACITY
(TONS)
COOLING
CAPACITY
(MBH)
COOLING
STAGES
TOTAL
POWER (kW)
UNIT
SEER
EER
IEER
08D
09D
2
2
7.5
8.5
89.0
97.0
7.4
8.1
N/A
N/A
12.00
12.00
13.00
13.00
LEGEND
AHRI
NOTES:
1. Rated in accordance with AHRI Standards 210/240
(04---06 size) and 340/360 (07---09 size).
--- Air Conditioning, Heating and Refrigeration
Institute Test Standard
ASHRAE --- American Society of Heating, Refrigerating
2. Ratings are based on:
and Air Conditioning, Inc.
Cooling Standard: 80_F (27_C) db, 67_F (19_C) wb
indoor air temp and 95_F (35_C) db outdoor air temp.
IEER Standard: A measure that expresses cooling
part---load EER efficiency for commercial unitary air---
conditioning and heat pump equipment on the basis of
weighted operation at various load capacities.
EER
--- Energy Efficiency Ratio
--- Integrated Energy Efficiency Ratio
--- Seasonal Energy Efficiency Ratio
IEER
SEER
3. All 581J units comply with ASHRAE 90.1 2001, 2004
Energy Standard for minimum SEER and EER
requirements.
Use of the AHRI Certified
TM Mark indicates a
manufacturer’s
participation in the
4. 581J units comply with US Energy Policy Act (2005).
To evaluate code compliance requirements, refer to
state and local codes or visit the following website:
program For verification
of certification for individual
products, go to
8
TABLE 4 – HEATING RATING TABLE - NATURAL GAS & PROPANE
AL/SS HEAT EXCHANGER
THERMAL
EFFICIENCY
(%)
TEMP RISE
(DEG F)
AFUE
(%)
Units
Gas Heat
INPUT / OUTPUT
STAGE 1 (MBH)
INPUT / OUTPUT
STAGE 2 (MBH)
LOW
MED
HIGH
LOW
MED
HIGH
LOW
MED
HIGH
LOW
MED
HIGH
LOW
MED
HIGH
LOW
MED
HIGH
LOW
MED
HIGH
LOW
MED
HIGH
LOW
MED
HIGH
50 / 41
82 / 66
---
72 / 59
115 / 93
---
25 --- 55
55 --- 85
---
82%
80%
---
81%
80%
---
04
50 / 41
82 / 66
120 / 96
50 / 41
82 / 66
120 / 96
50 / 41
82 / 66
---
50 / 41
82 / 66
120 / 96
50 / 41
82 / 66
120 / 96
50 / 41
90 / 73
105 / 84
90 / 73
120 / 98
180 / 147
90 / 73
120 / 98
180 / 147
72 / 59
25 --- 55
35 --- 65
50 --- 80
20 --- 55
30 --- 65
40 --- 80
25 --- 55
55 --- 85
---
25 --- 55
35 --- 65
50 --- 80
20 --- 55
30 --- 65
40 --- 80
15 --- 55
20 --- 50
30 --- 60
20 --- 50
35 --- 65
45 --- 75
20 --- 50
30 --- 65
40 --- 75
82%
81%
80%
82%
81%
80%
82%
80%
---
82%
81%
80%
82%
81%
80%
82%
82%
81%
82%
82%
82%
82%
82%
82%
81%
80%
80%
81%
80%
80%
N/A
N/A
---
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
115 / 93
150 / 120
72 / 59
115 / 93
150 / 120
72 / 59
115 / 93
---
72 / 59
115 / 93
150 / 120
72 / 59
115 / 93
150 / 120
72 / 59
125 / 103
150 / 120
125 / 103
180 / 148
224 / 184
125 / 103
180 / 148
224 / 184
05
06
04
05
06
07
08
09
NOTES:
Heat ratings are for natural gas heat exchangers operated at or below 2000 ft (610 m). For information on Propane or alti-
tudes above 2000 ft (610 m), see the Application Data section of this book. Accessory Propane/High Altitude kits are also
available.
In the USA the input rating for altitudes above 2000 ft (610m) must be derated by 4% for each 1000 ft (305 m) above sea
level. In Canada, the input rating must be derated by 10% for altitudes of 2000 ft (610 m) to 4500 ft (1372 m) above sea level.
9
1
TABLE 5 – HEATING RATING TABLE - LOW NOX
LOW NOx HEAT EXCHANGER
THERMAL
EFFICIENCY
(%)
TEMP RISE
(DEG F)
AFUE
(%)
UNIT
GAS HEAT
INPUT / OUTPUT
INPUT / OUTPUT
STAGE 2 (MBH)
STAGE 1 (MBH)
LOW
MED
HIGH
LOW
MED
HIGH
LOW
MED
HIGH
LOW
MED
HIGH
LOW
MED
HIGH
LOW
MED
HIGH
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
60 / 50
90 / 74
---
20 --- 50
30 --- 60
---
81%
81%
---
80%
81%
---
04
05
06
04
05
06
60 / 50
90 / 74
120 / 101
60 / 50
90 / 74
120 / 101
60 / 50
90 / 74
---
60 / 50
90 / 74
120 / 101
60 / 50
90 / 74
120 / 101
20 --- 50
30 --- 60
40 --- 70
15 --- 50
25 --- 60
35 --- 70
20 --- 50
30 --- 60
---
20 --- 50
30 --- 60
40 --- 70
15 --- 50
25 --- 60
35 --- 70
81%
81%
81%
81%
80%
80%
81%
81%
---
81%
81%
81%
81%
80%
80%
80%
81%
80%
80%
81%
81%
80%
81%
---
80%
81%
80%
80%
81%
81%
NOTE:
1. Units meet California’s South Coast Air Quality Management District (SCAQMD) Low---NO emissions requirement of 40
x
nanograms per joule or less.
TABLE 6 – SOUND PERFORMANCE TABLE
OUTDOOR SOUND (dB) AT 60
COOLING
STAGES
UNIT
A --- W E I G H T E D
63
125
78.0
83.6
82.5
82.6
84.3
85.0
250
74.2
77.1
76.1
81.0
80.2
81.6
500
73.3
74.6
73.6
79.4
79.3
79.5
1000
70.6
72.3
71.3
77.0
77.1
77.4
2000
66.0
68.3
67.1
73.0
72.2
74.1
4000
62.4
64.7
64.1
70.4
67.4
71.0
8000
56.9
60.9
60.0
66.7
63.7
66.3
04A
05A
06A
07A
08D
09D
1
1
1
1
2
2
76
78
77
82
82
82
78.2
84.7
87.5
90.1
90.6
88.6
LEGEND
dB --- Decibel
NOTES:
1. Outdoor sound data is measure in accordance with
AHRI.
2. Measurements are expressed in terms of sound power.
Do not compare these values to sound pressure values
because sound pressure depends on specific environ-
mental factors which normally do not match individual
applications. Sound power values are independent of
the environment and therefore more accurate.
Use of the AHRI Certified
TM Mark indicates a
manufacturer’s
participation in the
program For verification
of certification for individual
products, go to
3. A---weighted sound ratings filter out very high and very
low frequencies, to better approximate the response of
“average” human ear. A---weighted measurements for
Bryant units are taken in accordance with AHRI.
10
TABLE 7 – MINIMUM - MAXIMUM AIRFLOW RATINGS - NATURAL GAS & PROPANE
COOLING
HEATING
UNIT
HEAT LEVEL
MINIMUM
MAXIMUM
MINIMUM
990
MAXIMUM
2190
1550
---
LOW
MED
HIGH
LOW
MED
HIGH
LOW
MED
HIGH
LOW
MED
HIGH
LOW
MED
HIGH
LOW
MED
HIGH
1000
---
990
1330
1390
990
1330
1390
990
1330
1390
1900
2100
2270
1900
2100
2270
581J*04
900
1500
2190
2460
2220
2730
2880
2780
3640
4750
3750
4750
3900
3780
4750
4560
4250
581J*05
581J*06
581J*07
581J*08
581J*09
1200
1500
1800
2250
2550
2000
2500
3000
3750
4250
11
TABLE 8 – PHYSICAL DATA
(COOLING)
3 - 6 TONS
581J*04A
581J*05A
581J*06A
581J*07A
Refrigeration System
# Circuits / # Comp. / Type
1 / 1 / Scroll
9 --- 0
1 / 1 / Scroll
1 2 --- 8
1 / 1 / Scroll
1 3 --- 3
1 / 1 / Scroll
1 4 --- 0
Puronr refrig. (R---410A) charge A/B (lbs---oz)
Metering Device
TXV
TXV
TXV
TXV
High---press. Trip / Reset (psig)
Low---press. Trip / Reset (psig)
Compressor Capacity Staging (%)
630 / 505
54 / 117
100%
630 / 505
54 / 117
100%
630 / 505
54 / 117
100%
630 / 505
54 / 117
100%
Evap. Coil
Material (Tube Fin)
Coil type
Cu / Al
3/8” RTPF
3 / 15
Cu / Al
3/8” RTPF
3 / 15
Cu / Al
3/8” RTPF
4 / 15
Cu / Al
3/8” RTPF
3 / 15
Rows / FPI
2
Total Face Area (ft )
5.5
7.3
7.3
8.9
Condensate Drain Conn. Size
3/4”
3/4”
3/4”
3/4”
Evap. Fan and Motor
1 / Direct
1
600---1200
48
1 / Centrifugal
10 x 10
1 / Direct
1
600---1200
48
1 / Centrifugal
11 x 10
n/a
n/a
n/a
n/a
n/a
n/a
Motor Qty / Drive Type
Max BHP
1 / Direct
1
600---1200
48
1 / Centrifugal
10 x 10
RPM Range
Motor Frame Size
Fan Qty / Type
Fan Diameter (in)
Motor Qty / Drive Type
Max BHP
1 / Direct
1
1 / Direct
1
1 / Direct
1
1 / Belt
2.4
RPM Range
600---1200
48
1 / Centrifugal
10 x 10
600---1200
48
1 / Centrifugal
10 x 10
600---1200
48
1 / Centrifugal
11 x 10
1073---1457
56
1 / Centrifugal
10 x 10
Motor Frame Size
Fan Qty / Type
Fan Diameter (in)
Motor Qty / Drive Type
Max BHP
1 / Belt
1.2
1 / Belt
1.7
1 / Belt
2.4
1 / Belt
2.9
RPM Range
770---1175
48
1 / Centrifugal
10 x 10
920---1303
56
1 / Centrifugal
10 x 10
1035---1466
56
1 / Centrifugal
10 x 10
1173---1518
56
1 / Centrifugal
10 x 10
Motor Frame Size
Fan Qty / Type
Fan Diameter (in)
Motor Qty / Drive Type
Max BHP
1 / Belt
2.4
1 / Belt
2.9
1 / Belt
2.9
1 / Belt
3.7
RPM Range
1035---1466
56
1 / Centrifugal
10 x 10
1208---1639
56
1 / Centrifugal
10 x 10
1303---1687
56
1 / Centrifugal
10 x 10
1474---1788
56
1 / Centrifugal
10 x 10
Motor Frame Size
Fan Qty / Type
Fan Diameter (in)
Cond. Coil
Material (Tube/Fin)
Cu / Al
3/8” RTPF
2 / 17
Cu / Al
3/8” RTPF
2 / 17
Cu / Al
3/8” RTPF
2 / 17
Cu / Al
3/8” RTPF
2 / 17
Coil type
Rows / FPI
2
Total Face Area (ft )
12.7
21.3
21.3
20.5
Cond. fan / motor
Filters
Qty / Motor Drive Type
Motor HP / RPM
1/ Direct
1/8 / 825
22
1/ Direct
1/4 / 1100
22
1/ Direct
1/4 / 1100
22
2/ Direct
1/4 / 1100
22
Fan diameter (in)
RA Filter # / Size (in)
OA inlet screen # / Size (in)
2 / 16 x 25 x 2
1 / 20 x 24 x 1
4 / 16 x 16 x 2
1 / 20 x 24 x 1
4 / 16 x 16 x 2
1 / 20 x 24 x 1
4 / 16 x 20 x 2
1 / 20 x 24 x 1
12
TABLE 9 – PHYSICAL DATA
(HEATING)
581J*04A
3 - 6 TONS
581J*07A
581J*05A
581J*06A
Gas Connection
# of Gas Valves
Nat. gas supply line press (in. w.g.)/(PSIG)
1
1
1
1
4 --- 1 3 / 0 . 1 8 --- 0 . 4 7
4 --- 1 3 / 0 . 1 8 --- 0 . 4 7
4 --- 1 3 / 0 . 1 8 --- 0 . 4 7
4 --- 1 3 / 0 . 1 8 --- 0 . 4 7
Propane supply line press (in. w.g.)/(PSIG) 11 ---13 / 0.40 --- 0.47 11 ---13 / 0.40 --- 0.47 11 ---13 / 0.40 --- 0.47 11 ---13 / 0.40 --- 0.47
Heat Anticipator Setting (Amps)
1st stage
2nd stage
0.14
0.14
0.14
0.14
0.14
0.14
0.14
0.14
Natural Gas, Propane Heat
# of stages / # of burners (total)
Connection size
1 or 2 / 2
1/2” NPT
195 / 115
25 --- 55
1 or 2 / 2
1/2” NPT
195 / 115
25 --- 55
1 or 2 / 2
1/2” NPT
195 / 115
20 --- 55
2 / 2
1/2” NPT
195 / 115
15 --- 55
Rollout switch opens / closes
Temperature rise range (F)
# of stages / # of burners (total)
Connection size
1 or 2 / 3
1/2” NPT
195 / 115
55 --- 85
1 or 2 / 3
1/2” NPT
195 / 115
35 --- 65
1 or 2 / 3
1/2” NPT
195 / 115
30 --- 65
2 / 3
1/2” NPT
195 / 115
20 --- 50
Rollout switch opens / closes
Temperature rise range (F)
Connection size
# of stages / # of burners (total)
Rollout switch opens / closes
Temperature rise range (F)
---
---
---
---
1 or 2 / 3
1/2” NPT
195 / 115
50 --- 80
1 or 2 / 3
1/2” NPT
195 / 115
40 --- 80
2 / 4
3/4” NPT
195 / 115
30 --- 60
Low NO Gas Heat
x
# of stages / # of burners (total)
Connection size
1 or 2 / 2
1/2” NPT
195 / 115
20 --- 50
1 or 2 / 2
1/2” NPT
195 / 115
20 --- 50
1 or 2 / 2
1/2” NPT
195 / 115
15 --- 50
---
---
---
---
Rollout switch opens / closes
Temperature rise range (F)
# of stages / # of burners (total)
Connection size
Rollout switch opens / closes
Temperature rise range (F)
1 or 2 / 3
1/2” NPT
195 / 115
30 --- 60
1 or 2 / 3
1/2” NPT
195 / 115
30 --- 60
1 or 2 / 3
1/2” NPT
195 / 115
25 --- 60
---
---
---
---
---
# of stages / # of burners (total)
Connection size
---
---
---
---
1 or 2 / 3
1/2” NPT
195 / 115
40 --- 70
1 or 2 / 3
1/2” NPT
195 / 115
35 --- 70
---
---
---
---
Rollout switch opens / closes
Temperature rise range (F)
13
TABLE 10 – PHYSICAL DATA
(COOLING)
7.5 - 8.5 TONS
581J*09D
581J*08D
Refrigeration System
# Circuits / # Comp. / Type
R---410a charge A/B (lbs --- oz)
Metering device
2 / 2 / Scroll
9 --- 10 / 9 --- 10
TXV
2 / 2 / Scroll
9 --- 1 9 / 9 --- 1 4
TXV
High---press. Trip / Reset (psig)
Low---press. Trip / Reset (psig)
Compressor Capacity Staging (%)
630 / 505
54 / 117
50% / 100%
630 / 505
54 / 117
50% / 100%
Evap. Coil
Material (Tube/Fin)
Coil type
Cu / Al
3/8” RTPF
4 / 15
Cu / Al
3/8” RTPF
4 / 15
Rows / FPI
total face area (ft2)
Condensate drain conn. size
11.1
3/4”
11.1
3/4”
Evap. fan and motor
Motor Qty / Drive type
Max BHP
1 / Belt
1.7
1 / Belt
1.7
RPM range
518---733
56
1 / Centrifugal
15 x 15
518---733
56
1 / Centrifugal
15 x 15
motor frame size
Fan Qty / Type
Fan Diameter (in)
Motor Qty / Drive type
Max BHP
1 / Belt
2.4
1 / Belt
2.4
RPM range
690---936
56
1 / Centrifugal
15 x 15
690---936
56
1 / Centrifugal
15 x 15
motor frame size
Fan Qty / Type
Fan Diameter (in)
Motor Qty / Drive type
Max BHP
1 / Belt
3.7
1 / Belt
3.7
RPM range
838---1084
56
1 / Centrifugal
15 x 15
838---1084
56
1 / Centrifugal
15 x 15
motor frame size
Fan Qty / Type
Fan Diameter (in)
Cond. Coil
Material (Tube/Fin)
Coil type
Cu / Al
3/8” RTPF
2 / 17
Cu / Al
3/8” RTPF
2 / 17
Rows / FPI
2
Total Face Area (ft )
25.1
25.1
Cond. fan / motor
Filters
Qty / Motor drive type
Motor HP / RPM
2 / direct
1/4 / 1100
22
2 / direct
1/4 / 1100
22
Fan diameter (in)
RA Filter # / size (in)
OA inlet screen # / size (in)
4 / 20 x 20 x 2
1 / 20 x 24 x 1
4 / 20 x 20 x 2
1 / 20 x 24 x 1
14
TABLE 11 – PHYSICAL DATA
(HEATING)
7.5 - 8.5 TONS
581J*09D
581J*08D
Gas Connection
# of Gas Valves
1
1
Nat. gas supply line press (in. w.g.)/(PSIG)
Propane supply line press (in. w.g.)/(PSIG)
4 --- 1 3 / 0 . 1 8 --- 0 . 4 7
11 ---13 / 0.40 --- 0.47
4 --- 1 3 / 0 . 1 8 --- 0 . 4 7
11 ---13 / 0.40 --- 0.47
Heat Anticipator Setting (Amps)
1st stage
2nd stage
0.14
0.14
0.14
0.14
Natural Gas, Propane Heat
# of stages / # of burners (total)
Connection size
2 / 3
2 / 3
1/2” NPT
195 / 115
20 --- 50
1/2” NPT
195 / 115
20 --- 50
Rollout switch opens / closes
Temperature rise range (F)
# of stages / # of burners (total)
Connection size
2 / 4
2 / 4
3/4” NPT
195 / 115
35 --- 65
3/4” NPT
195 / 115
30 --- 65
Rollout switch opens / closes
Temperature rise range (F)
# of stages / # of burners (total)
Connection size
2 / 5
2 / 5
3/4” NPT
195 / 115
45 --- 75
3/4” NPT
195 / 115
40 --- 75
Rollout switch opens / closes
Temperature rise range (F)
15
CURBS & WEIGHTS DIMENSIONS -- 581J04--06
33-3/8
[848]
NOTES:
1. DIMENSIONS ARE IN INCHES, DIMENSIONS
IN [ ] ARE IN MILLIMETERS.
32-1/4
[818]
ECONOMIZER HOOD
(OPTIONAL)
16
[406]
2.
CENTER OF GRAVITY
3.
DIRECTION OF AIR FLOW
C
25-5/8
[652]
RETURN AIR
10-7/8
[277]
RETURN
AIR
44
1117]
E ALT.
W
X
Y
Z
CONDENSATE
DRAIN OPENING
IN BASEPAN
17-3/4
[451]
SUPPLY
AIR
29-3/8
[747]
26-1/2
[673]
SUPPLY
AIR
18-1/8
[459]
12-1/4
[312]
14-1/4
[363]
16-1/8
[411]
SEE THRU THE
BASE CHART
6-1/4
[157]
3-3/8
[85]
12-1/8
[307]
25
[636]
FLUE
HOOD
4
18-1/2
[470]
[100]
10-1/2
[265]
TOP
1-1/4
[32]
FILTER
E STD.
CONDENSATE
DRAIN
INDOOR BLOWER
ACCESS
CONTROL BOX
ACCESS PANEL
25-1/8
[638]
RETURN
AIR
OUTSIDE
AIR
16-3/4
[427]
SUPPLY AIR
J
11-3/8
[289]
OPTIONAL
FACTORY
INSTALLED
DISCONNECT
21-1/4
[539]
F
HANDLE
6-1/8
[155]
7
[177]
6-5/8
[168]
6
[152]
26-3/4
[681]
HANDLE
BAROMETRIC
RELIEF
FLOW
8-3/8
[213]
31-1/4
[793]
30-1/8
[764]
SUPPLY
AIR
74-3/8
[1888]
RETURN
AIR
RIGHT
FRONT
K
4-5/8
[118]
ELECTRICAL
DISCONNECT
LOCATION
FILTER ACCESS PANEL
(TOOL-LESS)
COMP.
CONDENSER
COIL
CONDENSER
COIL
ACCESS
PANEL
A,
B,
G
INDOOR COIL
ACCESS PANEL
OPTIONAL
FACTORY
INSTALLED
CONVENIENCE
OUTLET
19-1/2
[494]
D
6-5/8
[168]
2-5/8
[67]
3-3/4
[95]
46-3/4
[1187]
BACK
TYP
CURB
WIDTH
THRU-THE-BASE CHART
THESE HOLES REQUIRED FOR USE
CRBTMPWR001A01, 003A01
LEFT
THREADED
CONDUIT SIZE
WIRE
USE
REQ'D HOLE
SIZES (MAX.)
CONNECTION SIZES
W
1/2"
ACC.
24V
7/8" [22.2]
7/8" [22.2]
A
B
C
D
E
F
G
1 3/8" [35] DIA FIELD POWER SUPPLY HOLE
2" [50] DIA POWER SUPPLY KNOCKOUT
1 3/4" [51] DIA GAUGE ACCESS PLUG
UNIT
J
K
X
1/2"
33 3/8 18 5/8
[847] [472]
581J-04A
Y *
Z**
3/4" (001,003)
(003) 1/2" FPT
POWER 1 1/8" [28.4]
GAS 1 3/16" [30.0]
41 3/8 14 7/8
[1051] [377]
7/8" [22] DIA FIELD CONTROL WIRING HOLE
3/4"-14 NPT CONDENSATE DRAIN
581J-05A
581J-06A
FOR "THRU-THE-BASEPAN" FACTORY OPTION,
FITTINGS FOR ONLY X,Y, & Z ARE PROVIDED
41 3/8 14 7/8
[1051] [377]
1/2"-14 NPT GAS CONNECTION
SELECT EITHER 3/4" OR 1/2"
FOR POWER, DEPENDING ON WIRE SIZE
*
2 1/2 " [64] DIA POWER SUPPLY KNOCK-OUT
(001) PROVIDES 3/4" FPT THRU CURB
FLANGE & FITTING.
**
C10378
Fig. 1 -- Dimensions 581J04--06
16
CURBS & WEIGHTS DIMENSIONS -- 581J04--06 (cont.)
STD. UNIT
WEIGHT
CORNER
CORNER
CORNER
CORNER
C.G.
HEIGHT
WEIGHT (A) WEIGHT (B) WEIGHT (C) WEIGHT (D)
UNIT
LBS.
505
590
600
KG.
229
268
271
LBS.
124
151
156
KG.
56
LBS.
117
144
145
KG.
53
LBS.
128
144
144
KG.
58
LBS.
136
151
155
KG.
62
X
Y
Z
581J-04A
581J-05A
36 1/8 [918]
36 1/4 [921]
35 7/8 [911]
24 3/8 [619]
23 3/8 [594]
23 1/4 [591]
19 [483]
69
65
65
69
20 1/8 [511]
19 1/2 [495]
581J-06A
71
66
65
70
*- STANDARD UNIT WEIGHT IS WITH LOW GAS HEAT AND WITHOUT PACKAGING.
FOR OTHER OPTINS AND ACCESSORIES REFER TO THE PRODUCT DATA CATALOG.
CORNER B
CORNER A
Y
Z
CORNER D
CORNER C
X
TOP
C10379
Fig. 2 -- Dimensions 581J04--06
C
D
B
A
C08337
Fig. 3 -- Service Clearance
CONDITION
LOC
DIMENSION
48” (1219 mm)
18” (457 mm)
18” (457 mm)
12” (305 mm)
42” (1067 mm)
36” (914 mm)
Special
36” (914 mm)
18” (457 mm)
48” (1219 mm)
42” (1067 mm)
36” (914 mm)
Special
Unit disconnect is mounted on panel
No disconnect, convenience outlet option
Recommended service clearance
Minimum clearance
A
Surface behind servicer is grounded (e.g., metal, masonry wall)
B
C
Surface behind servicer is electrically non---conductive (e.g., wood, fiberglass)
Check for sources of flue products within 10---ft of unit fresh air intake hood
Side condensate drain is used
Minimum clearance
No flue discharge accessory installed, surface is combustible material
Surface behind servicer is grounded (e.g., metal, masonry wall, another unit)
Surface behind servicer is electrically non---conductive (e.g., wood, fiberglass)
D
Check for adjacent units or building fresh air intakes within 10---ft of this unit’s flue outlet
17
CURBS & WEIGHTS DIMENSIONS -- 581J04--06 (cont.)
D ALT
DRAIN
HOLE
CONNECTOR
PKG. ACCY.
ACCESSORY
POWER
ROOFCURB
ACCESSORY
B
C
GAS
POWER CONTROL
A
UNIT SIZE
3/4” [19]
NPT
1/2” [12.7]
NPT
1’-2”
CRBTMPWR001A01
CRBTMPWR003A01
CRRFCURB001A01
CRRFCURB002A01
1’-911
[551]
/
”
1’-4”
[406] [44.5]
13/4”
[356]
3/4” [19]
NPT
1/2” [12.7]
NPT
1/2” [12.7]
NPT
16
581J*04-06
2’-0”
[610]
NOTES:
1. Roof curb accessory is shipped disassembled.
2. Insulated panels.
3. Dimensions in [ ] are in millimeters.
4. Roof curb: galvanized steel.
5. Attach ductwork to curb (flanges of duct rest on curb).
6. Service clearance: 4 ft on each side.
7.
Direction of airflow.
8. Connector package CRBTMPWR001A01 is for
thru-the-curb type gas.
CRBTMPWR003A01 is for thru-the-base type
gas connections.
Typical Corner Fastening Device
C10423
Fig. 4 -- Roof Curb Details
18
CURBS & WEIGHTS DIMENSIONS -- 581J07--09
581J-07A
581J-08D
36 3/8
(924)
36 3/8
581J-09D
(924)
581J
581J
581J
C10425
Fig. 5 -- Dimensions 581J07--09
19
CURBS & WEIGHTS DIMENSIONS -- 581J07--09 (cont.)
581J-07A
581J-08D
581J-09D
C10381
Fig. 6 -- Dimensions 581J07--09
C
D
B
A
C08337
Fig. 7 -- Service Clearance
LOC
DIMENSION
48” (1219 mm)
18” (457 mm)
18” (457 mm)
12” (305 mm)
42” (1067 mm)
36” (914 mm)
Special
36” (914 mm)
18” (457 mm)
48” (1219 mm)
42” (1067 mm)
36” (914 mm)
Special
CONDITION
Unit disconnect is mounted on panel
No disconnect, convenience outlet option
Recommended service clearance
A
Minimum clearance
Surface behind servicer is grounded (e.g., metal, masonry wall)
Surface behind servicer is electrically non---conductive (e.g., wood, fiberglass)
Check for sources of flue products within 10---ft of unit fresh air intake hood
Side condensate drain is used
B
C
Minimum clearance
No flue discharge accessory installed, surface is combustible material
Surface behind servicer is grounded (e.g., metal, masonry wall, another unit)
Surface behind servicer is electrically non---conductive (e.g., wood, fiberglass)
D
Check for adjacent units or building fresh air intakes within 10---ft of this unit’s flue outlet
20
CURBS & WEIGHTS DIMENSIONS -- 581J07--09 (cont.)
ROOFCURB
ACCESSORY
A
UNIT SIZE
1’ - 2”
[356]
CRRFCURB003A01
CRRFCURB004A01
581J*A07
581J*D08-09
2’ - 0”
[610]
Typical Corner Fastening Device
C10424
Fig. 8 -- Roof Curb Details
21
OPTIONS & ACCESSORY WEIGHTS
OPTION / ACCESSORY WEIGHTS
04
05
06
07
08
09
OPTION / ACCESSORY
Power Exhaust --- vertical
Power Exhaust --- horizontal
EconoMi$er(IV or 2)
Two Position damper
Manual Dampers
Medium Gas Heat
lb
50
30
50
39
12
12
---
16
35
60
115
197
5
kg
23
14
23
18
5
5
---
7
16
27
52
89
2
lb
50
30
50
39
12
9
17
16
95
130
115
197
5
kg
23
14
23
18
5
4
8
7
43
59
52
89
2
lb
50
30
50
39
12
9
17
16
95
150
115
197
5
kg
23
14
23
18
5
4
8
7
43
68
52
89
2
lb
50
30
50
39
18
9
17
16
95
165
115
197
5
kg
23
14
23
18
8
4
8
7
43
75
52
89
2
lb
75
30
75
58
18
15
29
34
95
185
143
245
5
kg
34
14
34
26
8
lb
75
30
75
58
18
15
29
34
95
195
143
245
5
kg
34
14
34
26
8
7
7
High Gas Heat
13
15
43
88
65
111
2
13
15
43
88
65
111
2
Hail Guard (louvered)
Cu/Cu Condenser Coil
Cu/Cu Cond. & Evaporator Coils
Roof Curb (14---in. curb)
Roof Curb (24---in. curb)
CO sensor
2
Flue Discharge Deflector
Optional Indoor Motor/Drive
Motor Master Controller
Return Smoke Detector
Supply Smoke Detector
Fan/Filter Status Switch
Non---Fused Disconnect
Powered Convenience outlet
Non---Powered Convenience outlet
Enthalpy Sensor
7
3
5
16
2
2
1
7
16
2
1
7
3
5
16
2
2
1
7
16
2
1
7
3
5
16
2
2
1
7
16
2
1
7
3
5
16
2
2
1
7
16
2
1
7
3
7
16
2
2
1
7
16
2
1
7
3
7
16
2
2
1
7
16
2
1
10
35
5
5
2
15
35
5
10
35
5
5
2
15
35
5
10
35
5
5
2
15
35
5
10
35
5
5
2
15
35
5
15
35
5
5
2
15
35
5
15
35
5
5
2
15
35
5
2
2
2
2
2
2
Differential Enthalpy Sensor
3
1
3
1
3
1
3
1
3
1
3
1
22
APPLICATION DATA
Min operating ambient temp (cooling):
Outdoor air application strategies:
In mechanical cooling mode, your Bryant rooftop unit can
safely operate down to an outdoor ambient temperature of
35_F (-2_C) and 25_F (-4_C), with an accessory winter
start kit. It is possible to provide cooling at lower outdoor
ambient temperatures by using less outside air,
economizers, and/or accessory low ambient kits.
Economizers reduce operating expenses and compressor
run time by providing a free source of cooling and a
means of ventilation to match application changing needs.
In fact, they should be considered for most applications.
Also, consider the various economizer control methods
and their benefits, as well as sensors required to
accomplish your application goals. Please contact your
local Bryant representative for assistance.
Max operating ambient temp (cooling):
The maximum operating ambient temperature for cooling
mode is 125_F (52_C). While cooling operation above
125_F (52_C) may be possible, it could cause either a
reduction in performance, reliability, or a protective action
by the unit’s internal safety devices.
Motor limits, brake horsepower (BHP):
Due to internal design of Bryant units, the air path, and
specially designed motors, the full horsepower (maximum
continuous BHP) band, as listed in Table 8 and 10, can be
used with the utmost confidence. There is no need for
extra safety factors, as Bryant motors are designed and
rigorously tested to use the entire, listed BHP range
without either nuisance tripping or premature motor
failure.
Min mixed air temp (heating):
Using the factory settings, the minimum temperatures for
the mixed air (the combined temperature of the warm
return air and the cold outdoor air) entering the dimpled,
gas heat exchangers are:
Propane heating:
Aluminized
Stainless Steel
Propane has different physical qualities than natural gas.
As a result, Propane requires different fuel to air mixture.
To optimize the fuel/air mixture for Propane, Bryant sells
different burner orifices in an easy to install accessory kit.
To select the correct burner orifices or determine the heat
capacity for an Propane application, use either the
selection software, or the unit’s service manual.
50_F (10_C) continuous 40_F (4_C) continuous
45_F (7_C) intermittent 35_F (2_C) intermittent
Operating at lower mixed-air temperatures may be
possible, if a field-supplied, outdoor air thermostat
initiates both heat stages when the temperature is less than
the minimum temperatures listed above. Please contact
your local Bryant representative for assistance.
High altitude heating:
Min and max airflow (heating and cooling):
High altitudes have less oxygen, which affects the fuel/air
mixture in heat exchangers. In order to maintain a proper
fuel/air mixture, heat exchangers operating in altitudes
above 2000 ft (610 m) require different orifices. To select
the correct burner orifices or determine the heat capacity
for a high altitude application, use either the selection
software, or the unit’s service manual.
To maintain safe and reliable operation of your rooftop,
operate within the heating airflow limits during heating
mode and cooling airflow limits during cooling mode.
Operating above the max may cause blow-off, undesired
airflow noise, or airflow related problems with the rooftop
unit. Operating below the min may cause problems with
coil freeze-up and unsafe heating operation. Heating and
cooling limitations differ when evaluating operating CFM,
the minimum value is the HIGHER of the cooling and
heating minimum CFM values published in Table 7 and
the maximum value is the LOWER of the cooling and
heating minimum values published in Table 7.
High altitudes have less oxygen, which means heat
exchangers need less fuel. The new gas orifices in this
field-installed kit make the necessary adjustment for high
altitude applications. They restore the optimal fuel to air
mixture and maintain healthy combustion on altitudes
above 2000 ft (610 m).
NOTE: Typical natural gas heating value ranges from
975 to 1050 Btu/ft3 at sea level nationally. The heating
value goes down approximately 1.7% per every thousand
feet elevation. Standard factory orifices can typically be
used up to 2000 ft (610m) elevation without any
operational issues.
NOTE: For installations in Canada, the input rating
should be derated by 10% for altitudes from 2000 ft
(610m)to 4500 ft (1372m) above sea level.
Heating-to-cooling changeover:
Your unit will automatically change from heating to
cooling mode when using
auto-change-over feature.
a
thermostat with an
Airflow:
All units are draw-though in cooling mode and
blow-through in heating mode.
23
APPLICATION DATA (cont.)
Sizing a rooftop
Low ambient applications
Bigger isn’t necessarily better. While an air conditioner
needs to have enough capacity to meet the design loads, it
doesn’t need excess capacity. In fact, excess capacity
typically results in very poor part load performance and
humidity control.
The optional Bryant economizer can adequately cool your
space by bringing in fresh, cool outside air. In fact, when
so equipped, accessory low-ambient kit may not be
necessary. In low ambient conditions, unless the outdoor
air
is
excessively
humid
or
contaminated,
economizer-based “free cooling” is the preferred less
costly and energy conscious method.
Using higher design temperatures than ASHRAE
recommends for your location, adding “safety factors” to
the calculated load, are all signs of oversizing air
conditioners. Oversizing the air conditioner leads to poor
humidity control, reduced efficiency, higher utility bills,
larger indoor temperature swings, excessive noise, and
increased wear and tear on the air conditioner.
In low ambient applications where outside air might not
be desired (such as contaminated or excessively humid
outdoor environments), your Bryant rooftop can operate to
ambient temperatures down to -20_F (-29_C) using the
recommended accessory Motormaster low ambient
controller.
Rather than oversizing an air conditioner, engineers
should “right-size” or even slightly undersize air
conditioners. Correctly sizing an air conditioner controls
humidity better; promotes efficiency; reduces utility bills;
extends equipment life, and maintains even, comfortable
temperatures. Please contact your local Bryant
representative for assistance.
24
SELECTION PROCEDURE (WITH 581J*07A EXAMPLE)1
I.
Determine cooling and heating loads.
VII. Select factory options (FIOP)
Given:
Local code requires an economizer for any unit with
TC greater than 65.0 MBH.
Mixed air dry bulb
Mixed air wet bulb
Ambient dry bulb
TCLoad
SHCLoad
Vertical supply air
Heating load
80_F (27_C)
67_F (19_C)
95_F (35_C)
73.6 MBH
53.3 MBH
2100 CFM
85.0 MBH
0.67 in. wg
230-3-60
VIII. Calculate the total static pressure.
External static pressure
Sum of FIOP / Accessory static
0.67 in. wg
+0.13 in. wg
Total Static Pressure
0.80 in. wg
IX. Look up the indoor fan RPM & BHP.
External static pressure
Electrical characteristics
Table 36 shows, at 2100 CFM & ESP= 0.8,
RPM = 712 & BHP = 1.17
II. Make an initial guess at cooling tons.
X. Convert BHP (Step VIII) into fan motor heat.
Refrig. tons = TCLoad / 12 MBH per ton
Refrig. tons = 72.0 / 12 = 6.0 tons
In this case, start by looking at the 581J**07.
Fan motor heat = 2.546* BHP/Motor Eff.4
Fan motor heat = 3.7 MBH
XI. Calculate RTU heating capacity.
III. Look up the rooftop’s TC and SHC.
Building heating load
Fan motor heat
85.0 MBH
-3.7 MBH
Table 15 shows that, at the application’s supply air
CFM, mixed air and ambient temperatures, the
581J*A07 supplies:
Required heating capacity
81.3 MBH
TC = 73.6 MBH2
XII. Select a gas heater.
SHC = 53.3 MBH2
Table 4 shows the heating capacities of the
581JEA07 = 103.0 MBH. Select the 581JEA07
IV. Calculate the building latent heat load.
LCLoad = TCLoad - S H C Load
LCLoad = 72.0 MBH - 54.0 MBH = 18.0 MBH
XIII. Determine electrical requirements.
Table 45 shows the MCA and Breaker Size of a
581J*A07 (without convenience outlet) as:
MCA = 32.0 amps & MOCP = 50.0 amps
V. Calculate RTU latent heat capacity.
LC = TC - SHC
LC = 73.6 MBH - 53.3 MBH = 20.3 MBH
Min. disconnect size: FLA = 31.0 & LRA = 148.
VI. Compare RTU capacities to loads.3
Compare the rooftop’s SHC and LC to the
building’s sensible and latent heat loads.
LEGEND
NOTES:
1. Selection software by Bryant saves time by performing
many of the steps above. Contact your Bryant sales
representative for assistance.
BHP
FLA
LC
LRA
MBH
MCA
— Break horsepower
— Full load amps
— Latent capacity
— Lock rotor amp
— (1,000) BTUH
2. Unit ratings are gross capacities and do not include the
effect of evaporator fan motor heat. See Step XI. for de-
termining amount of evaporator fan motor heat to sub-
tract from total and sensible capacities to obtain net
cooling and net sensible capacities.
— Min. circuit ampacity
MOCP — Max. over---current protection
RPM
RTU
SHC
TC
— Revolutions per minute
— Rooftop unit
— Sensible heat capacity
— Total capacity
3. Selecting a unit with a SHC slightly lower than the
SHC
is often better than oversizing. Slightly lower
Load
SHC’s will help control indoor humidity, and prevent
temperature swings.
4. Indoor fan motor efficiency is available in Table 41. Use
the decimal form in the equation, eg. 80% = .8.
25
TABLE 12 – COOLING CAPACITIES
1-STAGE COOLING
3 TONS
AMBIENT TEMPERATURE
85
95
EA (dB)
80
105
EA (dB)
80
115
EA (dB)
80
125
EA (dB)
80
581J*04A
EA (dB)
75
32.1
27.8
34.0
25.0
37.3
20.7
40.8
16.3
---
80
85
75
30.8
26.7
32.3
24.2
35.5
20.0
38.9
15.6
---
85
75
29.4
25.5
30.6
23.4
33.6
19.2
36.9
14.8
---
85
75
28.0
24.2
28.7
22.5
31.5
18.3
34.6
13.9
---
85
75
26.3
22.8
26.6
21.5
29.2
17.4
32.2
13.0
---
85
TC
SHC
TC
32.1
32.1
34.0
29.7
37.3
25.4
40.8
21.0
43.9
17.4
33.8
33.8
35.1
32.2
38.4
27.3
42.0
22.3
45.0
18.1
35.3
35.3
35.9
34.5
39.3
29.1
42.9
23.4
45.9
18.8
36.6
36.6
36.7
36.7
39.9
30.9
43.6
24.5
46.7
19.4
37.7
37.7
37.7
37.7
40.5
32.6
44.2
25.6
47.2
19.9
36.3
36.3
34.3
34.3
37.3
30.0
40.8
25.7
43.9
22.4
38.4
38.4
37.5
37.5
38.4
32.7
42.0
27.6
45.0
23.8
40.0
40.0
40.5
40.5
39.3
35.2
42.9
29.5
45.9
25.1
41.5
41.5
43.2
43.2
39.9
37.6
43.6
31.3
46.7
26.3
42.7
42.7
44.4
44.4
40.5
40.0
44.2
33.0
47.2
27.5
30.8
30.8
32.3
28.9
35.5
24.6
38.9
20.3
41.8
16.7
32.5
32.5
33.3
31.3
36.5
26.5
40.0
21.5
42.9
17.4
33.9
33.9
34.2
33.6
37.3
28.3
40.8
22.6
43.7
18.0
35.1
35.1
35.1
35.1
37.9
30.1
41.4
23.7
44.4
18.6
36.1
36.1
36.1
36.1
38.4
31.7
41.9
24.8
44.9
19.1
34.9
34.9
33.5
33.5
35.5
29.3
38.9
25.0
41.8
21.7
36.8
36.8
36.6
36.6
36.5
31.9
40.0
26.9
42.9
23.0
38.4
38.4
39.4
39.4
37.3
34.4
40.8
28.7
43.7
24.3
39.7
39.7
41.3
41.3
37.9
36.8
41.4
30.5
44.4
25.5
40.9
40.9
42.5
42.5
39.1
39.1
41.9
32.2
44.9
26.7
29.4
29.4
30.6
28.0
33.6
23.8
36.9
19.5
39.6
15.9
31.0
31.0
31.5
30.4
34.5
25.7
37.8
20.7
40.6
16.6
32.3
32.3
32.4
32.4
35.2
27.5
38.5
21.8
41.3
17.2
33.4
33.4
33.4
33.4
35.8
29.2
39.1
22.9
41.9
17.8
34.3
34.3
34.4
34.4
36.2
30.8
39.6
23.9
42.3
18.3
33.4
33.4
32.6
32.6
33.6
28.4
36.9
24.1
39.6
20.8
35.1
35.1
35.7
35.7
34.5
31.0
37.8
26.0
40.6
22.2
36.6
36.6
38.1
38.1
35.2
33.5
38.5
27.9
41.3
23.4
37.9
37.9
39.4
39.4
35.9
35.9
39.1
29.6
41.9
24.6
38.9
38.9
40.5
40.5
38.2
38.2
39.6
31.3
42.3
25.8
28.0
28.0
28.7
27.1
31.5
22.9
34.6
18.6
37.2
15.1
29.4
29.4
29.6
29.3
32.3
24.8
35.5
19.8
38.0
15.7
30.6
30.6
30.6
30.6
32.9
26.6
36.1
20.9
38.7
16.3
31.6
31.6
31.6
31.6
33.4
28.3
36.6
22.0
39.2
16.9
32.5
32.5
32.5
32.5
33.8
29.9
37.0
23.0
39.6
17.4
31.7
31.7
31.7
31.7
31.5
27.6
34.6
23.3
37.2
19.9
33.3
33.3
34.5
34.5
32.3
30.1
35.5
25.1
38.0
21.3
34.7
34.7
36.1
36.1
32.9
32.6
36.1
27.0
38.7
22.5
35.8
35.8
37.3
37.3
34.9
34.9
36.6
28.7
39.2
23.7
36.8
36.8
38.3
38.3
37.2
37.2
37.0
30.4
39.6
24.9
26.3
26.3
26.6
26.0
29.2
22.0
32.2
17.7
34.6
14.2
27.6
27.6
27.7
27.7
29.9
23.8
32.9
18.8
35.3
14.8
28.7
28.7
28.7
28.7
30.5
25.6
33.4
19.9
35.9
15.4
29.6
29.6
29.6
29.6
30.9
27.2
33.9
21.0
36.3
15.9
30.4
30.4
30.4
30.4
31.2
28.8
34.2
22.0
36.7
16.4
29.8
29.8
30.6
30.6
29.2
26.6
32.2
22.3
34.6
19.0
31.3
31.3
32.6
32.6
29.9
29.1
32.9
24.2
35.3
20.3
32.5
32.5
33.9
33.9
31.6
31.6
33.4
26.0
35.9
21.5
33.6
33.6
34.9
34.9
33.9
33.9
33.9
27.7
36.3
22.7
34.4
34.4
35.8
35.8
36.1
36.1
34.2
29.4
36.7
23.9
58
62
67
72
78
58
62
67
72
78
58
62
67
72
78
58
62
67
72
78
58
62
67
72
78
SHC
TC
900
EA
Cfm (wb)
SHC
TC
SHC
TC
SHC
TC
---
---
---
---
---
33.8
29.3
35.1
26.9
38.4
22.0
42.0
16.9
---
32.5
28.1
33.3
26.0
36.5
21.2
40.0
16.1
---
31.0
26.9
31.5
25.1
34.5
20.3
37.8
15.3
---
29.4
25.5
29.6
24.1
32.3
19.4
35.5
14.4
---
27.6
23.9
27.7
22.7
29.9
18.5
32.9
13.5
---
SHC
TC
SHC
TC
1050 EA
Cfm (wb)
SHC
TC
SHC
TC
SHC
TC
---
---
---
---
---
35.3
30.6
35.9
28.6
39.3
23.1
42.9
17.3
---
33.9
29.4
34.2
27.7
37.3
22.3
40.8
16.6
---
32.3
28.0
32.4
26.6
35.2
21.4
38.5
15.7
---
30.6
26.5
30.6
25.2
32.9
20.5
36.1
14.8
---
28.7
24.9
28.7
23.6
30.5
19.5
33.4
13.9
---
SHC
TC
SHC
TC
1200 EA
Cfm (wb)
SHC
TC
SHC
TC
SHC
TC
---
---
---
---
---
36.6
31.7
36.7
30.2
39.9
24.2
43.6
17.8
---
35.1
30.4
35.1
28.8
37.9
23.4
41.4
17.0
---
33.4
28.9
33.4
27.5
35.8
22.5
39.1
16.1
---
31.6
27.4
31.6
26.0
33.4
21.6
36.6
15.2
---
29.6
25.7
29.6
24.4
30.9
20.6
33.9
14.3
---
SHC
TC
SHC
TC
1350 EA
Cfm (wb)
SHC
TC
SHC
TC
SHC
TC
---
---
---
---
---
37.7
32.6
37.7
31.0
40.5
25.2
44.2
18.2
---
36.1
31.3
36.1
29.7
38.4
24.4
41.9
17.4
---
34.3
29.8
34.4
28.3
36.2
23.5
39.6
16.5
---
32.5
28.1
32.5
26.7
33.8
22.5
37.0
15.6
---
30.4
26.3
30.4
25.0
31.2
21.5
34.2
14.7
---
SHC
TC
SHC
TC
1500 EA
Cfm (wb)
SHC
TC
SHC
TC
SHC
---
---
---
---
---
LEGEND:
---
--- D o n o t o p e r a t e
Cfm
--- Cubic feet per minute (supply air)
--- Entering air temperature (dry bulb)
--- Entering air temperature (wet bulb)
--- Sensible heat capacity
EAT(db)
EAT(wb)
SHC
TC
--- Total capacity
26
TABLE 13 – COOLING CAPACITIES
1-STAGE COOLING
4 TONS
AMBIENT TEMPERATURE
85
581J*05A
95
EA (dB)
80
105
EA (dB)
80
115
EA (dB)
80
125
EA (dB)
80
EA (dB)
75
80
85
75
85
75
85
75
85
75
85
TC
SHC
TC
43.2
43.2
49.1
41.5
41.5
41.5
43.7
38.7
48.0
33.1
52.7
27.3
56.8
22.6
43.8
43.8
45.1
42.1
49.5
35.7
54.3
29.0
58.3
23.5
45.8
45.8
46.3
45.2
50.6
38.1
55.4
30.6
59.5
24.4
47.4
47.4
47.5
47.5
51.5
40.5
56.3
32.1
60.5
25.2
48.8
48.8
48.9
48.9
52.1
42.8
57.1
33.5
61.2
26.0
47.2
39.7
39.7
39.7
41.3
37.6
45.4
32.0
49.9
26.2
53.7
21.5
41.9
41.9
42.6
40.9
46.7
34.5
51.2
27.8
55.1
22.4
43.7
43.7
43.7
43.7
47.7
37.0
52.3
29.4
56.1
23.2
45.2
45.2
45.2
45.2
48.5
39.3
53.1
30.9
57.0
24.0
46.5
46.5
46.5
46.5
49.1
41.5
53.7
32.3
57.6
24.8
45.1
37.7
37.7
37.7
38.8
36.3
42.6
30.8
46.8
25.0
50.4
20.3
39.7
39.7
40.0
39.5
43.7
33.3
48.0
26.6
51.6
21.2
41.3
41.3
41.4
41.4
44.6
35.7
48.9
28.2
52.5
22.0
42.7
42.7
42.8
42.8
45.3
38.0
49.6
29.6
53.2
22.8
43.9
43.9
44.0
44.0
45.8
40.2
50.1
31.1
53.8
23.5
42.9
35.6
35.6
35.6
36.0
35.0
39.6
29.5
43.5
23.8
46.8
19.1
37.3
37.3
37.4
37.4
40.5
32.0
44.5
25.3
47.8
19.9
38.8
38.8
38.8
38.8
41.2
34.4
45.2
26.8
48.6
20.7
40.1
40.1
40.1
40.1
41.8
36.6
45.8
28.3
49.2
21.5
41.1
41.1
41.1
41.1
42.3
38.8
46.3
29.7
49.7
22.2
40.4
58
62
67
72
78
58
62
67
72
78
58
62
67
72
78
58
62
67
72
78
58
62
67
72
78
37.3
45.9
33.5
50.5
27.9
55.4
22.0
---
43.2
45.9
39.8
50.5
34.1
55.4
28.4
59.7
23.6
45.6
45.6
47.4
43.2
52.1
36.8
57.1
30.1
61.4
24.6
47.7
47.7
48.7
46.4
53.3
39.2
58.4
31.7
62.7
25.5
49.5
49.5
49.8
49.2
54.3
41.7
59.4
33.2
63.8
26.3
51.0
51.0
51.1
51.1
55.1
44.0
60.3
34.7
64.6
27.1
49.1
46.0
46.0
50.5
40.4
55.4
34.7
59.7
30.2
51.9
51.9
50.5
50.5
52.1
44.0
57.1
37.4
61.4
32.2
54.2
54.2
54.5
54.5
53.3
47.5
58.4
39.9
62.7
34.0
56.2
56.2
58.1
58.1
54.3
50.8
59.4
42.4
63.8
35.8
58.0
58.0
60.4
60.4
55.1
54.1
60.3
44.8
64.6
37.5
35.9
43.7
32.5
48.0
26.8
52.7
21.0
---
47.2
45.0
45.0
48.0
39.4
52.7
33.7
56.8
29.2
49.8
49.8
49.3
49.3
49.5
42.9
54.3
36.3
58.3
31.1
52.0
52.0
53.2
53.2
50.6
46.3
55.4
38.8
59.5
32.9
53.9
53.9
56.1
56.1
51.5
49.7
56.3
41.3
60.5
34.6
55.5
55.5
57.8
57.8
52.9
52.9
57.1
43.6
61.2
36.3
34.3
41.3
31.3
45.4
25.7
49.9
19.9
---
45.1
43.8
43.8
45.4
38.2
49.9
32.5
53.7
28.1
47.6
47.6
48.0
48.0
46.7
41.8
51.2
35.1
55.1
29.9
49.6
49.6
51.7
51.7
47.7
45.2
52.3
37.6
56.1
31.7
51.3
51.3
53.4
53.4
48.5
48.5
53.1
40.1
57.0
33.4
52.8
52.8
55.0
55.0
51.6
51.6
53.7
42.4
57.6
35.1
32.6
38.8
30.1
42.6
24.5
46.8
18.7
---
42.9
42.6
42.6
42.6
37.1
46.8
31.3
50.4
26.8
45.1
45.1
46.5
46.5
43.7
40.5
48.0
33.9
51.6
28.7
47.0
47.0
48.9
48.9
44.6
43.9
48.9
36.4
52.5
30.4
48.5
48.5
50.5
50.5
47.1
47.1
49.6
38.8
53.2
32.1
49.9
49.9
51.9
51.9
50.2
50.2
50.1
41.2
53.8
33.8
30.7
36.0
28.8
39.6
23.2
43.5
17.4
---
40.4
41.2
41.2
39.6
35.8
43.5
30.1
46.8
25.5
42.4
42.4
44.2
44.2
40.5
39.2
44.5
32.6
47.8
27.4
44.1
44.1
45.9
45.9
42.6
42.6
45.2
35.1
48.6
29.1
45.5
45.5
47.4
47.4
45.7
45.7
45.8
37.5
49.2
30.8
46.7
46.7
48.6
48.6
48.7
48.7
46.3
39.8
49.7
32.4
SHC
TC
1200
EA
Cfm (wb)
SHC
TC
SHC
TC
SHC
TC
---
---
---
---
---
45.6
39.4
47.4
36.0
52.1
29.5
57.1
22.8
---
43.8
37.9
45.1
34.9
49.5
28.4
54.3
21.7
---
41.9
36.2
42.6
33.7
46.7
27.3
51.2
20.5
---
39.7
34.3
40.0
32.4
43.7
26.0
48.0
19.3
---
37.3
32.3
37.4
30.6
40.5
24.7
44.5
18.0
---
SHC
TC
SHC
TC
1400
EA
Cfm (wb)
SHC
TC
SHC
TC
SHC
TC
---
---
---
---
---
47.7
41.2
48.7
38.3
53.3
31.0
58.4
23.4
---
45.8
39.5
46.3
37.1
50.6
29.9
55.4
22.3
---
43.7
37.7
43.7
35.8
47.7
28.7
52.3
21.1
---
41.3
35.7
41.4
33.9
44.6
27.5
48.9
19.9
---
38.8
33.5
38.8
31.8
41.2
26.2
45.2
18.6
---
SHC
TC
SHC
TC
1600
EA
Cfm (wb)
SHC
TC
SHC
TC
SHC
TC
---
---
---
---
---
49.5
42.8
49.8
40.4
54.3
32.5
59.4
24.0
---
47.4
41.0
47.5
38.8
51.5
31.4
56.3
22.9
---
45.2
39.0
45.2
37.0
48.5
30.2
53.1
21.7
---
42.7
36.9
42.8
35.0
45.3
28.9
49.6
20.4
---
40.1
34.6
40.1
32.8
41.8
27.5
45.8
19.1
---
SHC
TC
SHC
TC
1800
EA
Cfm (wb)
SHC
TC
SHC
TC
SHC
TC
---
---
---
---
---
51.0
44.1
51.1
41.8
55.1
33.9
60.3
24.5
---
48.8
42.2
48.9
40.0
52.1
32.7
57.1
23.4
---
46.5
40.2
46.5
38.1
49.1
31.5
53.7
22.2
---
43.9
37.9
44.0
36.0
45.8
30.2
50.1
21.0
---
41.1
35.5
41.1
33.7
42.3
28.8
46.3
19.6
---
SHC
TC
SHC
TC
2000
EA
Cfm (wb)
SHC
TC
SHC
TC
SHC
---
---
---
---
---
LEGEND:
---
--- D o n o t o p e r a t e
Cfm
--- Cubic feet per minute (supply air)
--- Entering air temperature (dry bulb)
--- Entering air temperature (wet bulb)
--- Sensible heat capacity
--- Total capacity
EAT(db)
EAT(wb)
SHC
TC
27
TABLE 14 – COOLING CAPACITIES
1-STAGE COOLING
5 TONS
AMBIENT TEMPERATURE
85
95
EA (dB)
80
105
EA (dB)
80
115
EA (dB)
80
125
EA (dB)
80
581J*06A
EA (dB)
75
80
85
75
85
75
85
75
85
75
85
TC
SHC
TC
53.4
53.4
60.6
51.3
51.3
51.3
52.9
48.8
57.8
41.3
63.2
33.6
67.9
27.2
54.0
54.0
54.5
53.3
59.3
44.7
64.8
35.7
69.4
28.4
56.2
56.2
56.3
56.3
60.4
48.0
65.9
37.8
70.6
29.5
58.1
58.1
58.1
58.1
61.3
51.2
66.8
39.9
71.6
30.6
59.7
59.7
59.7
59.7
62.0
54.3
67.5
41.8
72.3
31.6
58.2
49.0
49.0
49.0
50.0
47.4
54.6
39.9
59.7
32.2
64.0
25.9
51.5
51.5
51.6
51.6
55.9
43.3
61.0
34.4
65.4
27.1
53.5
53.5
53.6
53.6
56.9
46.6
62.1
36.4
66.5
28.2
55.2
55.2
55.3
55.3
57.7
49.7
62.8
38.4
67.3
29.2
56.7
56.7
56.7
56.7
58.3
52.7
63.4
40.4
---
55.6
46.5
46.5
46.5
46.9
45.9
51.1
38.5
55.9
30.8
59.9
24.5
48.7
48.7
48.8
48.8
52.3
41.8
57.0
32.9
61.1
25.6
50.6
50.6
50.6
50.6
53.1
45.1
57.9
35.0
62.0
26.7
52.1
52.1
52.2
52.2
53.8
48.2
58.6
37.0
---
52.7
43.7
43.7
43.7
43.8
43.8
47.4
37.0
51.8
29.3
55.5
23.0
45.7
45.7
45.8
45.8
48.3
40.3
52.7
31.4
56.5
24.1
47.3
47.3
47.4
47.4
49.1
43.4
53.5
33.4
---
49.5
58
62
67
72
78
58
62
67
72
78
58
62
67
72
78
58
62
67
72
78
58
62
67
72
78
46.3
55.6
42.0
60.8
34.4
66.6
26.7
---
53.4
55.6
50.1
60.8
42.6
66.6
34.8
71.4
28.5
56.3
56.3
57.3
54.7
62.5
46.0
68.3
37.0
73.2
29.7
58.7
58.7
58.8
58.8
63.8
49.3
69.6
39.1
74.5
30.8
60.7
60.7
60.8
60.8
64.7
52.6
70.6
41.2
75.6
31.9
62.5
62.5
62.5
62.5
65.5
55.7
71.4
43.2
76.4
33.0
60.6
58.2
58.2
60.8
50.7
66.6
43.0
71.4
36.7
63.8
63.8
64.0
64.0
62.5
55.4
68.3
46.5
73.2
39.3
66.5
66.5
69.2
69.2
63.8
60.1
69.6
49.9
74.5
41.8
68.8
68.8
71.6
71.6
64.7
64.5
70.6
53.3
75.6
44.1
70.8
70.8
73.6
73.6
68.9
68.9
71.4
56.5
76.4
46.4
44.5
52.9
40.7
57.8
33.2
63.2
25.4
---
58.2
56.9
56.9
57.8
49.4
63.2
41.7
67.9
35.5
61.2
61.2
62.5
62.5
59.3
54.1
64.8
45.2
69.4
38.0
63.7
63.7
66.3
66.3
60.4
58.7
65.9
48.6
70.6
40.4
65.8
65.8
68.5
68.5
63.2
63.2
66.8
51.9
71.6
42.8
67.6
67.6
70.3
70.3
67.4
67.4
67.5
55.2
72.3
45.1
42.5
50.0
39.4
54.6
31.8
59.7
24.1
---
55.6
55.5
55.5
54.6
48.1
59.7
40.4
64.0
34.2
58.3
58.3
60.7
60.7
55.9
52.7
61.0
43.8
65.4
36.7
60.6
60.6
63.1
63.1
57.3
57.3
62.1
47.2
66.5
39.0
62.6
62.6
65.1
65.1
61.7
61.7
62.8
50.5
67.3
41.4
64.2
64.2
66.8
66.8
65.9
65.9
63.4
53.7
---
40.3
46.9
37.9
51.1
30.4
55.9
22.6
---
52.7
53.9
53.9
51.1
46.6
55.9
38.9
59.9
32.7
55.2
55.2
57.5
57.5
52.3
51.3
57.0
42.4
61.1
35.2
57.3
57.3
59.6
59.6
55.8
55.8
57.9
45.7
62.0
37.6
59.1
59.1
61.4
61.4
60.1
60.1
58.6
49.0
---
37.9
43.8
36.0
47.4
28.9
51.8
21.1
---
49.5
51.6
51.6
47.4
45.1
51.8
37.4
55.5
31.3
51.8
51.8
53.9
53.9
49.7
49.7
52.7
40.8
56.5
33.7
53.7
53.7
55.8
55.8
54.1
54.1
53.5
44.2
---
SHC
TC
1500
EA
Cfm (wb)
SHC
TC
SHC
TC
SHC
TC
---
---
---
---
---
56.3
48.8
57.3
45.3
62.5
36.6
68.3
27.5
---
54.0
46.8
54.5
44.0
59.3
35.3
64.8
26.2
---
51.5
44.6
51.6
42.4
55.9
33.9
61.0
24.9
---
48.7
42.2
48.8
40.1
52.3
32.4
57.0
23.4
---
45.7
39.6
45.8
37.6
48.3
30.9
52.7
21.9
---
SHC
TC
SHC
TC
1750
EA
Cfm (wb)
SHC
TC
SHC
TC
SHC
TC
---
---
---
---
---
58.7
50.9
58.8
48.3
63.8
38.6
69.6
28.4
---
56.2
48.7
56.3
46.3
60.4
37.3
65.9
27.0
---
53.5
46.4
53.6
44.0
56.9
35.9
62.1
25.7
---
50.6
43.8
50.6
41.6
53.1
34.4
57.9
24.2
---
47.3
41.0
47.4
39.0
49.1
32.8
53.5
22.6
---
SHC
TC
SHC
TC
2000
EA
Cfm (wb)
SHC
TC
SHC
TC
SHC
TC
---
---
---
---
---
---
---
60.7
52.6
60.8
50.0
64.7
40.6
70.6
29.1
---
58.1
50.3
58.1
47.8
61.3
39.2
66.8
27.8
---
55.2
47.9
55.3
45.4
57.7
37.8
62.8
26.4
---
52.1
45.2
52.2
42.9
53.8
36.2
58.6
24.9
---
48.7
42.2
48.7
40.1
49.7
34.6
54.0
23.3
---
48.7
48.7
48.7
48.7
49.7
46.5
54.0
35.4
---
55.2
55.2
57.4
57.4
58.3
58.3
54.0
47.4
---
SHC
TC
SHC
TC
2250
EA
Cfm (wb)
SHC
TC
SHC
TC
SHC
TC
---
---
---
---
---
---
---
---
---
62.5
54.1
62.5
51.4
65.5
42.5
71.4
29.9
---
59.7
51.7
59.7
49.1
62.0
41.1
67.5
28.5
---
56.7
49.1
56.7
46.6
58.3
39.6
63.4
27.1
---
53.4
46.3
53.5
43.9
54.4
38.0
59.1
25.6
---
53.4
53.4
53.5
53.5
54.4
51.1
59.1
38.9
---
60.5
60.5
63.0
63.0
64.2
64.2
59.1
52.2
---
49.9
43.2
49.9
41.0
50.2
36.3
54.4
24.0
---
49.9
49.9
49.9
49.9
50.2
49.2
54.4
37.3
---
56.5
56.5
58.8
58.8
62.2
62.2
54.4
50.6
---
SHC
TC
SHC
TC
2500
EA
Cfm (wb)
SHC
TC
SHC
TC
SHC
---
---
---
---
---
---
---
---
---
---
---
LEGEND:
---
--- D o n o t o p e r a t e
Cfm
--- Cubic feet per minute (supply air)
--- Entering air temperature (dry bulb)
--- Entering air temperature (wet bulb)
--- Sensible heat capacity
EAT(db)
EAT(wb)
SHC
TC
--- Total capacity
28
TABLE 15 – COOLING CAPACITIES
1-STAGE COOLING
6 TONS
AMBIENT TEMPERATURE
85
581J*07A
95
EA (dB)
80
105
EA (dB)
80
115
EA (dB)
80
125
EA (dB)
80
EA (dB)
75
80
85
75
85
75
85
75
85
75
85
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
64.1
64.1
72.5
61.8
61.8
61.8
64.9
57.9
71.5
49.5
78.7
40.9
84.8
33.9
65.1
65.1
67
69.9
59.2
59.2
59.2
61.5
56.2
67.8
47.9
74.7
39.3
80.6
32.4
62.3
62.3
63.5
61
67
56.3
56.3
56.3
57.9
54.4
63.8
46.2
70.4
37.7
76
63.7
53.2
53.2
53.2
54
60.2
58
62
67
72
78
58
62
67
72
76
58
62
67
72
78
58
62
67
72
78
58
62
67
72
78
55.7
67.9
50.2
74.8
41.8
82.2
33
64.1
67.9
59.4
74.8
50.9
82.2
42.3
88.7
35.3
67.6
67.6
70.1
64.4
77.1
54.8
84.7
44.8
91.3
36.7
70.6
70.6
72
72.5
68.5
68.5
74.8
60.1
82.2
51.6
88.7
45.2
76.5
76.5
74.9
74.9
77.1
65.3
84.7
55.5
91.3
47.8
79.9
79.9
80.6
80.6
78.9
70.3
86.6
59.2
93.3
50.4
82.8
82.8
85.5
85.5
80.3
75.1
88.2
62.7
94.9
52.9
85.3
85.3
88.7
88.7
81.4
79.7
89.4
66.1
96.1
55.3
53.7
64.9
48.8
71.5
40.3
78.7
31.6
---
69.9
67
51.4
61.5
47.1
67.8
38.8
74.7
30.1
---
67
48.9
57.9
45.4
63.8
37.1
70.4
28.4
---
63.7
63.5
63.5
63.8
55.4
70.4
46.9
76
46.2
54
60.2
61.4
61.4
59.5
53.6
65.6
45.1
70.9
38.5
63.2
63.2
65.8
65.8
60.9
58.6
67.2
48.8
72.5
41.1
65.8
65.8
68.4
68.4
63.4
63.4
68.4
52.4
73.7
43.6
67.9
67.9
70.6
70.6
67.9
67.9
69.3
55.8
74.7
46
65.3
65.3
67.8
57.1
74.7
48.6
80.6
42
67
43.4
59.5
35.3
65.6
26.7
---
52.4
59.5
44.4
65.6
35.9
70.9
28.9
55.9
55.9
56
71.5
58.7
78.7
50.2
84.8
43.7
73.7
73.7
73.2
73.2
73.6
63.9
80.9
54
1800 EA
Cfm (wb)
---
---
---
---
---
30.7
59.3
59.3
59.7
58.9
65.5
50
40.3
67.1
67.1
69.1
69.1
65.5
60.5
72.2
50.7
77.8
43
---
67.6
58.7
70.1
53.9
77.1
44.2
84.7
34.2
---
65.1
56.6
67
62.3
54.1
63.5
50.6
69.7
41.2
76.8
31.1
---
70.5
70.5
71.3
71.3
69.7
62.3
76.8
52.4
82.7
44.7
73.5
73.5
76.6
76.6
71.2
67.2
78.3
56
59.3
51.5
59.7
48.7
65.5
39.4
72.2
29.5
---
55.9
48.5
56
52.4
73.6
42.7
80.9
32.7
---
62.8
73.6
53.3
80.9
43.4
87.2
35.3
68
46.2
60.9
37.6
67.2
27.6
---
56
69.7
51.7
76.8
41.8
82.7
33.7
65
60.9
48.1
67.2
38.2
72.5
30.2
58.1
58.1
58.2
58.2
62
2100 EA
Cfm (wb)
72.2
40.1
77.8
32
87.2
46.3
76.9
76.9
78.7
78.7
75.2
68.8
82.7
57.7
89
---
---
---
---
---
70.6
61.3
72
68
65
61.7
53.6
61.8
50.9
66.8
41.6
73.6
30.4
---
61.7
61.7
61.8
61.8
66.8
53.5
73.6
42.3
79.3
33.3
63.8
63.8
63.9
63.9
67.8
56.8
74.6
44.5
80.4
34.4
65.6
65.6
65.7
65.7
68.7
60
69.8
69.8
72.6
72.6
66.8
65.4
73.6
54.3
79.3
45.5
72.2
72.2
75.1
75.1
70
58.1
50.5
58.2
48
59
68
56.4
65.2
53.7
71.2
43.4
78.3
32.1
---
65
68.7
55.6
75.2
45
68.7
67.2
75.2
56.9
82.7
45.7
89
65.2
65.2
71.2
55.3
78.3
44.1
84.4
35
57.3
78.9
46.5
86.6
35.2
---
69
78.9
58.4
86.6
47.2
93.3
38
62
2400 EA
Cfm (wb)
39.7
68.4
28.5
---
51.6
68.4
40.5
73.7
31.4
60
82.7
33.7
---
84.4
47.3
76.1
76.1
79.1
79.1
72.4
71.9
79.6
59.5
85.6
49.7
78.3
78.3
81.4
81.4
76.4
76.4
80.5
62.9
86.7
52.1
---
---
36.6
70.4
70.4
70.5
70.5
76.5
60.4
84
48.9
79.6
79.6
82.8
82.8
76.5
73.6
84
---
---
---
73.2
63.6
73.7
60.2
80.3
48.7
88.2
36.1
---
73.2
73.2
73.7
72.9
80.3
61.9
88.2
49.4
94.9
39.2
75.4
75.4
75.5
75.5
81.4
65.2
89.4
51.5
96.1
40.4
70.4
61.1
70.5
58.1
76.5
47.1
84
67.3
58.4
67.3
55.5
72.4
45.5
79.6
33
67.3
67.3
67.3
67.3
72.4
58.7
79.6
46.2
85.6
36.1
69.2
69.2
69.3
69.3
73.3
61.9
80.5
48.3
86.7
37.2
63.8
55.4
63.9
52.7
67.8
43.7
74.6
31.2
---
60
52.1
60.1
49.5
62.9
41.7
69.3
29.3
---
60
60.1
60.1
62.9
54.8
69.3
42.6
74.7
32.5
61.7
61.7
61.7
61.7
63.7
57.9
70.1
44.6
75.5
33.6
2700 EA
Cfm (wb)
70
74.6
57.7
80.4
47.9
74.2
74.2
77.2
77.2
74.4
74.4
75.5
61.1
81.3
50.3
34.6
---
47.9
90.4
37.7
72.5
72.5
72.5
72.5
77.5
63.7
85.2
50
61.2
90.4
51.4
82
---
---
---
---
---
---
75.4
65.5
75.5
62.2
81.4
50.7
89.4
36.9
---
72.5
62.9
72.5
59.8
77.5
49.2
85.2
35.4
---
69.2
60.1
69.3
57.1
73.3
47.5
80.5
33.8
---
65.6
57
61.7
53.5
61.7
50.9
63.7
43.6
70.1
30.1
---
69.8
69.8
72.5
72.5
72.2
72.2
70.1
59.1
75.5
48.3
82
85.3
85.3
78.1
78.1
85.2
64.6
91.6
53.8
65.7
54.1
68.7
45.6
75.5
32
3000 EA
Cfm (wb)
75.5
46.5
81.3
35.5
91.6
38.9
---
---
---
---
---
---
LEGEND:
---
--- D o n o t o p e r a t e
Cfm
--- Cubic feet per minute (supply air)
--- Entering air temperature (dry bulb)
--- Entering air temperature (wet bulb)
--- Sensible heat capacity
--- Total capacity
EAT(db)
EAT(wb)
SHC
TC
29
TABLE 16 – COOLING CAPACITIES
2-STAGE COOLING
7.5 TONS
AMBIENT TEMPERATURE
85
EA (dB)
80
95
EA (dB)
80
105
EA (dB)
80
115
EA (dB)
80
125
EA (dB)
80
581J*08D
75
85
75
85
75
85
75
85
75
85
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
81
81
91.8
77.9
77.9
77.9
81.1
73.4
89
88.4
74.7
74.7
74.7
76.9
71.3
84.3
60.4
92.5
49.2
99.4
39.9
78.6
78.6
79.3
77.7
86.5
65.4
94.8
52.3
101.7
41.7
81.8
81.8
81.9
81.9
88.2
70.1
96.5
55.3
103.5
43.3
84.6
84.6
84.6
84.6
89.5
74.7
97.8
58.2
104.9
44.8
86.9
86.9
87
84.6
71.1
71.1
71.1
72.5
69.2
79.4
58.3
87.1
47.1
93.5
37.9
74.7
74.7
75
80.6
67.3
67.3
76.3
58
62
67
72
76
58
62
67
72
76
58
62
67
72
76
58
62
67
72
76
58
62
67
72
76
70.2
85.1
63.3
93.3
52.3
102.3
40.9
---
81
85.1
75.3
93.3
64.2
102.3
53
91.8
87.2
87.2
93.3
76.2
102.3
65
67.5
81.1
61.4
89
88.4
85.3
64.7
76.9
59.5
84.3
48.4
92.5
37.1
---
84.6
83.2
83.2
84.3
72.4
92.5
61.2
99.4
52.2
89.1
89.1
91.3
91.3
86.5
79.2
94.8
66.2
101.7
55.8
92.8
92.8
96.5
96.5
88.2
85.8
96.5
71.1
103.5
59.3
95.9
95.9
99.7
99.7
92.2
92.2
97.8
75.8
104.9
62.6
98.5
98.5
102.5
102.5
98.3
98.3
98.9
80.4
106
61.6
72.5
57.3
79.4
46.4
87.1
35.1
---
80.6
81
58.3
67.8
55
67.3
67.8
66.7
74.1
56.2
81.3
44.9
87.3
35.8
70.5
70.5
70.6
70.6
75.8
61
76.3
78.5
78.5
74.1
68.1
81.3
57
85.3
81
89
79.4
70.3
87.1
59.1
93.5
50.2
84.7
84.7
87.8
87.8
81.3
77.1
89.1
64.1
95.6
53.7
88.1
88.1
91.6
91.6
83.6
83.6
90.6
69
74.1
44.2
81.3
32.9
---
2250
EA
Cfm (wb)
50.4
97.5
39
62.4
97.5
51.1
104.8
41.9
82.1
82.1
83.7
79.9
91.4
67.4
100.1
54.3
107.5
43.6
85.6
85.6
86.1
85.2
93.3
72.2
102.1
57.3
109.5
45.3
88.6
88.6
88.7
88.7
94.8
76.8
103.6
60.3
111.1
46.8
91.2
91.2
91.2
91.2
96
74.4
97.5
63.1
110
110
---
104.8
54.2
87.3
48
---
43.7
85.4
85.4
87.8
82
56.1
96.9
96.9
95.7
95.7
96
---
---
---
---
85.4
74
82.1
71.2
83.7
66.2
91.4
53.5
100.1
40.4
---
93.1
78.6
68.1
79.3
64.1
86.5
51.5
94.8
38.4
---
74.7
64.7
75
70.5
61.1
70.6
58
80
93.1
80
87.8
68.2
96
93.6
83.2
83.2
75.8
74.8
83
93.6
61.3
81.3
49.4
89.1
36.3
---
74.6
81.3
63.2
89.1
50.2
95.6
39.6
77.7
77.7
77.8
77.8
82.8
67.9
90.6
53.2
97.2
41.2
80.2
80.2
80.3
80.3
84
96
91.4
75.8
47.2
83
2625
Cfm (wb)
EA
55.4
105.2
42.3
---
69.3
105.2
56.2
112.9
45.5
89.2
89.2
90.1
88.1
98.1
74.1
107.3
59.3
115.2
47.2
92.4
92.4
92.5
92.5
99.7
78.8
109
83.2
105.2
70.2
112.9
59.8
101.1
101.1
103.5
103.5
98.1
89.9
107.3
75.1
115.2
63.2
104.7
104.7
109
81.2
100.1
68.2
83
34.1
---
48
61.9
89.1
51.5
83
107.5
57.8
89.1
37.4
73.2
73.2
73.3
73.3
77
---
---
---
---
---
89.2
77.3
90.1
72.7
98.1
58.4
107.3
43.5
---
85.6
74.2
86.1
70.1
93.3
56.5
102.1
41.6
---
97.1
81.8
70.9
81.9
67.3
88.2
54.4
96.5
39.5
---
77.7
67.3
77.8
63.9
82.8
52.3
90.6
37.4
---
73.2
63.5
73.3
60.2
77
97.1
83
100.3
100.3
93.3
86.4
86.4
81.3
81.3
84.3
66.7
90.4
54.8
85.6
85.6
89
3000
Cfm (wb)
EA
87.9
50
65.6
84.3
50.9
90.4
38.9
75.5
75.5
75.6
75.6
78
102.1
73.1
84.3
35.2
---
109.5
61.3
97.2
57.1
90.9
90.9
94.6
94.6
89.9
89.9
91.8
73.6
98.4
60.4
93.3
93.3
97.1
97.1
95.9
95.9
92.7
78.2
99.4
63.6
---
---
---
---
---
92.4
80
88.6
76.8
88.7
72.9
94.8
59.3
103.6
42.7
---
100.4
100.4
104.5
104.5
94.8
84.6
73.3
84.6
69.6
89.5
57.2
97.8
40.6
---
80.2
69.5
80.3
66
75.5
65.4
75.6
62.1
78
92.5
76
109
89
99.7
61.3
109
44.6
---
99.7
96.4
109
84
87.4
87.4
85.3
71.3
91.5
58.1
87.8
87.8
91.3
91.3
93.2
93.2
86.1
75.9
92.3
61.3
3375
Cfm (wb)
EA
94.3
55
72.4
91.8
56.1
98.4
42.7
82.3
82.3
82.4
82.4
84.9
76.7
92.7
58.8
99.4
44.1
52.6
85.3
36.2
---
70
103.6
77.9
91.8
38.5
---
85.3
53.8
91.5
40.4
77.4
77.4
77.5
77.5
78.9
74.2
86.1
56.5
92.3
41.8
62.2
116.9
48.8
95.1
95.1
95.2
95.2
101.1
83.3
110.4
65.1
118.3
50.3
79.9
116.9
66.6
107.8
107.8
112.2
112.2
102.6
102.6
110.4
84.5
118.3
69.9
111.1
64.6
---
---
---
---
---
95.1
82.4
95.2
78.2
101.1
64
91.2
79
103.3
103.3
107.5
107.5
100.5
100.5
104.8
82.5
86.9
75.3
87
82.3
71.3
82.4
67.7
84.9
57.6
92.7
39.5
---
77.4
67.1
77.5
63.7
78.9
55.1
86.1
37.2
---
91.2
75
71.5
90.6
59.8
98.9
41.7
---
87
96
90.6
79.1
98.9
61
3750
Cfm (wb)
EA
62
81.2
104.8
63.1
112.4
48.3
110.4
45.7
---
104.8
43.7
---
112.4
67.9
106
---
---
---
46.2
65.8
---
---
LEGEND:
---
Cfm
--- D o n o t o p e r a t e
--- Cubic feet per minute (supply air)
EAT(db)
EAT(wb)
SHC
--- Entering air temperature (dry bulb)
--- Entering air temperature (wet bulb)
--- Sensible heat capacity
TC
--- Total capacity
30
TABLE 17 – COOLING CAPACITIES
2-STAGE COOLING
8.5 TONS
AMBIENT TEMPERATURE
85
EA (dB)
80
95
EA (dB)
80
105
EA (dB)
80
115
EA (dB)
80
125
EA (dB)
80
581J*09D
75
85
75
85
75
85
75
85
75
85
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
90.5
90.5
102.4
87
87
98.5
83.2
83.2
83.2
85.4
80.1
93.7
67.8
102.7
55
94.2
79.1
79.1
79.1
80.3
77.5
88
89.6
74.7
74.7
84.6
58
62
67
72
76
58
62
67
72
76
58
62
67
72
76
58
62
67
72
76
58
62
67
72
76
78.6
94.8
71.2
104
58.7
114
45.8
---
90.5
94.8
84.6
104
102.4
98.1
75.5
90.2
69.1
99
87
98.5
95.8
72.2
85.4
66.8
93.7
54.3
102.7
41.4
---
94.2
93.4
68.7
80.3
64.3
88
89.6
90.8
90.8
88
64.8
74.9
61.6
81.9
49.5
89.8
36.7
---
74.7
74.9
74.7
81.9
62.9
89.8
50.2
96.5
39.8
78.3
78.3
78.4
78.4
83.7
68.3
91.7
53.6
98.4
41.6
81.2
81.2
81.3
81.3
85
84.6
87.8
87.8
81.9
76.4
89.8
63.7
96.5
53.5
88.6
88.6
92.2
92.2
83.9
83.9
91.7
69.2
98.4
57.4
91.9
91.9
95.6
95.6
90.9
90.9
93
90.2
82.4
99
98.1
95.8
93.4
104
99
93.7
2550
EA
Cfm (wb)
72.2
114
85.7
56.6
108.5
43.7
---
70
83.5
81.3
52
65.4
96.5
52.7
103.7
42.2
83.1
83.1
83.2
83.2
90.1
70.9
98.6
56.1
105.9
44.1
86.3
86.3
86.4
86.4
91.6
76.1
100.3
59.4
107.5
45.8
89
78.9
96.5
66.2
103.7
56
114
108.5
57.2
116.5
46.7
91.6
91.6
93
108.5
70.8
102.7
68.5
96.5
39.1
---
59.3
122.4
48.8
95.4
95.4
97.7
92
72.9
122.4
62.8
116.5
60.6
110.3
44.5
87.5
87.5
88.1
86.9
96
110.3
58.4
---
---
---
---
---
95.4
82.8
97.7
76.7
106.9
62.3
117
47.3
---
108
91.6
79.5
93
103.7
103.7
104.9
104.9
101.6
91.2
87.5
75.9
88.1
71.8
96
99
83.1
72.1
83.2
68.6
90.1
55.4
98.6
40.5
---
94
78.3
68
108
99
94
107.4
107.4
106.9
93.4
102.1
102.1
96
97.9
97.9
90.1
86.5
98.6
71.7
105.9
59.9
97.7
97.7
101.6
101.6
93.7
93.7
100.3
77.1
107.5
63.6
100.8
100.8
104.8
104.8
100.5
100.5
101.5
82.3
108.8
67.3
103.4
103.4
107.5
107.5
107
78.4
64.6
83.7
52.8
91.7
38
74.3
101.6
60.1
111.2
45.1
---
89.6
101.6
75.6
111.2
60.8
119.4
48.7
95.4
95.4
95.6
95.6
103.6
81
106.9
77.8
117
2975
Cfm (wb)
EA
57.8
105.1
42.9
---
73.3
105.1
58.5
112.8
46.4
91
88.9
117
111.2
76.4
105.1
74.1
62.9
125.6
50.8
99.5
99.5
100.3
98.6
109.1
83.2
119.3
66.4
128
78.6
125.6
66.8
119.4
64.6
112.8
62.3
---
---
---
---
---
---
99.5
86.4
100.3
81.5
109.1
65.6
119.3
48.7
---
112.7
112.7
115.8
115.8
109.1
100.8
119.3
84.1
95.4
82.8
95.6
78.7
103.6
63.4
113.3
46.5
---
108
91
103
86.3
74.9
86.4
71.2
91.6
58.6
100.3
41.8
---
81.2
70.5
81.3
67
108
79
91
103
112.4
112.4
103.6
98.6
91.2
75.1
97.8
61
91.2
91.2
97.8
78.6
107
107.2
107.2
97.8
85
3400
Cfm (wb)
EA
96.2
55.9
93
73.4
93
113.3
64.2
121.5
50.5
98.7
98.7
98.8
98.8
105.2
86.1
114.9
67.4
123.2
52.2
101.4
101.4
101.5
101.5
106.5
91
113.3
81.8
107
44.2
---
107
61.8
114.7
48.2
94
79.5
39.2
---
56.9
99.8
43.3
83.6
83.6
83.7
83.7
86.1
78.3
94.1
60
74.5
99.8
61.1
94.7
94.7
98.4
98.4
97.6
97.6
94.1
79.6
100.9
64.7
97
128
121.5
68.4
114.7
66.1
---
52.6
103
70.6
---
---
---
---
103
89.4
103.1
85
116.6
116.6
121.3
121.3
110.9
108
98.7
85.6
98.8
81.4
105.2
66.5
114.9
47.7
---
111.7
111.7
116.1
116.1
105.7
105.7
114.9
87.1
94
106.4
106.4
110.7
110.7
103.2
103.2
108.4
84.7
89
83.6
72.6
83.7
69
103
81.6
94.1
77.5
99.2
64.1
108.4
45.4
---
94
77.3
89.1
73.4
92.9
61.6
101.5
43
89
103.1
103.1
110.9
88.4
121.2
69.7
129.8
54.4
106
94.1
94.1
99.2
83.7
108.4
65.1
116.2
49.9
96.6
96.6
96.6
96.6
100.4
88.5
109.5
68.2
117.4
51.5
89.1
89.1
92.9
81.1
101.5
62.6
108.8
47.5
91.3
91.3
91.4
91.4
93.9
85.7
102.5
65.7
109.8
49.1
110.9
68.8
121.2
50
86.1
58.9
94.1
40.4
---
3825
Cfm (wb)
EA
121.2
89.4
---
129.8
74.3
123.2
72.1
116.2
69.7
---
100.9
44.9
85.7
85.7
85.7
85.7
87.1
82.7
94.9
63.1
101.8
46.5
---
---
---
---
---
106
92
119.9
119.9
124.7
124.7
114.9
114.9
122.6
94.5
101.4
88
114.8
114.8
119.4
119.4
112.5
112.5
116.2
92.2
96.6
83.8
96.6
79.6
100.4
67
109.3
109.3
113.6
113.6
109.9
109.9
109.5
89.8
91.3
79.3
91.4
75.3
93.9
64.4
102.5
44.1
---
85.7
74.4
85.7
70.6
87.1
61.6
94.9
41.5
---
106
97
106.1
87.4
112.3
71.8
122.6
51.2
---
106.1
106.1
112.3
93.4
122.6
72.8
131.3
56
101.5
83.6
106.5
69.5
116.2
48.9
---
100.8
100.8
103.8
103.8
94.9
84.6
101.8
68.1
4250
Cfm (wb)
EA
107
116.2
70.5
124.5
53.8
109.5
46.6
---
102.5
87.3
109.8
70.8
131.3
77.9
124.5
75.6
117.4
73.3
---
---
---
---
---
LEGEND:
---
Cfm
--- D o n o t o p e r a t e
--- Cubic feet per minute (supply air)
EAT(db)
EAT(wb)
SHC
--- Entering air temperature (dry bulb)
--- Entering air temperature (wet bulb)
--- Sensible heat capacity
TC
--- Total capacity
31
TABLE 18 – STATIC PRESSURE ADDERS (FACTORY OPTIONS AND/OR ACCESSORIES)
Economizer
3 --- 5 T O N S
CFM (in. wg)
600
800 1000 1250 1500 1750 2000 2250 2500 2750 3000
Vertical
0.01
0.02
0.03
0.04
0.04
0.05
0.06
0.07
0.08
0.09
0.10
0.12
0.13
0.15
0.15
0.18
0.18
0.22
0.23
0.26
0.28
Economizer
Horizontal
Economizer
0.02
6 --- 8 . 5 T O N S
1800 2000 2250 2500 2750 3000 3250 3500 3750 4000 4250 4500 4750 5000 5250 5500 5750 6000
CFM (in. wg)
Vertical
0.04 0.05 0.06 0.08 0.09 0.12 0.13 0.15
0.07 0.07 0.08 0.10 0.13 0.15 0.18 0.21
0.17 0.20 0.22
0.25 0.28 0.30
0.25
0.34
0.29 0.33
0.39 0.43
0.36 0.40 0.44 0.48
0.47 0.51 0.56 0.60
Economizer
Horizontal
Economizer
General fan performance notes:
1. Interpolation is permissible. Do not extrapolate.
2. External static pressure is the static pressure difference between the return duct and the supply duct plus the static
pressure caused by any FIOPs or accessories.
3. Tabular data accounts for pressure loss due to clean filters, unit casing, and wet coils. Factory options and accessories
may add static pressure losses, as shown in Table 24. Selection software is available, through your salesperson, to help
you select the best motor/drive combination for your application.
4. The Fan Performance tables offer motor/drive recommendations. In cases when two motor/drive combinations would
work, Bryant recommended the lower horsepower option.
5. For information on the electrical properties of Bryant motors, please see the Electrical information section of this
book.
6. For more information on the performance limits of Bryant motors, see the application data section of this book.
7. The EPACT (Energy Policy Act of 1992) regulates energy requirements for specific types of indoor fan motors. Motors
regulated by EPACT include any general purpose, T-frame (three-digit, 143 and larger), single-speed, foot mounted,
polyphase, squirrel cage induction motors of NEMA (National Electrical Manufacturers Association) design A and B,
manufactured for use in the United States. Ranging from 1 to 200 Hp, these continuous-duty motors operate on 230
and 460 volt, 60 Hz power. If a motor does not fit into these specifications, the motor does not have to be replaced by
an EPACT compliant energy-efficient motor. Variable-speed motors are exempt from EPACT compliance require-
ments. Therefore, the indoor fan motors for Bryant 581J04-09 units are exempt from these requirements.
32
33
34
35
36
37
38
FAN PERFORMANCE
X13 MULTI SPEED/TORQUE MOTOR (cont.)
TABLE 31 – 581J*04A Horizontal Unit-Direct Drive
TABLE 32 – 581J*04A Vertical Unit-Direct Drive
Speed
(Torque)
tap
Speed
(Torque)
tap
CFM
ESP
BHP
CFM
ESP
BHP
900
975
0.45
0.33
0.22
0.12
0.05
---
---
---
---
0.66
0.52
0.39
0.27
0.16
0.05
---
0.23
0.22
0.20
0.19
0.17
---
---
---
---
0.30
0.28
0.27
0.26
0.24
0.23
---
900
975
0.30
0.17
0.06
---
---
---
---
---
---
0.48
0.34
0.20
0.07
---
---
---
0.19
0.17
0.16
---
---
---
---
---
---
0.25
0.23
0.22
0.20
---
---
---
1050
1125
1200
1275
1350
1425
1500
900
1050
1125
1200
1275
1350
1425
1500
900
1
2
3
4
5
1
2
3
4
5
975
975
1050
1125
1200
1275
1350
1425
1500
900
1050
1125
1200
1275
1350
1425
1500
900
---
---
---
---
---
---
---
---
1.01
0.88
0.73
0.59
0.46
0.33
0.21
0.09
---
1.13
1.03
0.92
0.81
0.69
0.57
0.44
0.31
0.18
1.20
1.14
0.92
0.81
0.95
0.90
0.84
0.78
0.72
0.43
0.41
0.39
0.38
0.36
0.36
0.33
0.31
---
0.46
0.46
0.46
0.46
0.46
0.45
0.44
0.42
0.40
0.49
0.51
0.53
0.55
0.57
0.60
0.62
0.65
0.68
0.84
0.69
0.53
0.38
0.24
0.10
---
0.38
0.36
0.33
0.32
0.31
0.31
---
975
975
1050
1125
1200
1275
1350
1425
1500
900
1050
1125
1200
1275
1350
1425
1500
900
---
---
---
---
0.99
0.88
0.75
0.61
0.47
0.33
0.19
---
0.43
0.43
0.43
0.43
0.42
0.40
0.38
---
975
975
1050
1125
1200
1275
1350
1425
1500
900
1050
1125
1200
1275
1350
1425
1500
900
---
---
1.10
1.02
0.75
0.61
0.81
0.74
0.67
0.60
0.52
0.47
0.49
0.51
0.54
0.56
0.58
0.61
0.63
0.66
975
975
1050
1125
1200
1275
1350
1425
1500
1050
1125
1200
1275
1350
1425
1500
39
TABLE 33 – 581J*05A Horizontal Unit-Direct Drive
TABLE 34 – 581J*05A Vertical Unit-Direct Drive
Speed
(Torque)
tap
Speed
(Torque)
tap
CFM
ESP
BHP
CFM
ESP
BHP
1200
1300
1400
1500
1600
1700
1800
1900
2000
1200
1300
1400
1500
1600
1700
1800
1900
2000
1200
1300
1400
1500
1600
1700
1800
1900
2000
1200
1300
1400
1500
1600
1700
1800
1900
2000
1200
1300
1400
1500
1600
1700
1800
1900
2000
0.49
0.34
0.20
0.06
---
---
---
0.35
0.33
0.31
0.29
---
---
---
1200
1300
1400
1500
1600
1700
1800
1900
2000
1200
1300
1400
1500
1600
1700
1800
1900
2000
1200
1300
1400
1500
1600
1700
1800
1900
2000
1200
1300
1400
1500
1600
1700
1800
1900
2000
1200
1300
1400
1500
1600
1700
1800
1900
2000
0.38
0.24
0.12
0.01
---
---
---
---
---
0.49
0.34
0.20
0.05
---
---
---
---
---
0.87
0.74
0.60
0.44
0.29
0.14
0.02
---
0.30
0.28
0.27
0.26
---
---
---
---
---
0.34
0.32
0.31
0.29
---
---
---
---
---
0.56
0.57
0.59
0.56
0.50
0.47
0.46
---
1
2
3
4
5
1
2
3
4
5
---
---
---
---
0.60
0.45
0.30
0.16
0.01
---
---
---
---
0.40
0.38
0.36
0.34
0.32
---
---
---
---
0.94
0.83
0.71
0.59
0.46
0.33
0.19
0.07
---
0.98
0.89
0.81
0.72
0.62
0.52
0.40
0.27
0.12
1.02
0.95
0.81
0.72
0.74
0.67
0.59
0.51
0.42
0.59
0.61
0.63
0.61
0.59
0.56
0.53
0.49
---
0.59
0.62
0.65
0.66
0.67
0.68
0.68
0.66
0.61
0.60
0.63
0.67
0.70
0.74
0.78
0.82
0.86
0.89
---
---
0.93
0.83
0.72
0.60
0.48
0.35
0.21
0.06
---
0.97
0.89
0.72
0.60
0.64
0.55
0.46
0.35
0.25
0.57
0.60
0.63
0.63
0.62
0.62
0.61
0.58
---
0.58
0.61
0.65
0.68
0.72
0.75
0.79
0.82
0.86
40
TABLE 35 – 581J*06A Horizontal Unit-Direct Drive
TABLE 36 – 581J*06A Vertical Unit-Direct Drive
Speed
(Torque)
tap
Speed
(Torque)
tap
CFM
ESP
BHP
CFM
ESP
BHP
1500
1625
1750
1875
2000
2125
2250
2375
2500
1500
1625
1750
1875
2000
2125
2250
2375
2500
1500
1625
1750
1875
2000
2125
2250
2375
2500
1500
1625
1750
1875
2000
2125
2250
2375
2500
1500
1625
1750
1875
2000
2125
2250
2375
2500
0.40
0.20
0.04
---
---
---
---
---
---
0.62
0.39
0.19
0.03
---
---
---
0.50
0.48
0.45
---
---
---
---
---
---
0.62
0.60
0.57
0.53
---
---
---
1500
1625
1750
1875
2000
2125
2250
2375
2500
1500
1625
1750
1875
2000
2125
2250
2375
2500
1500
1625
1750
1875
2000
2125
2250
2375
2500
1500
1625
1750
1875
2000
2125
2250
2375
2500
1500
1625
1750
1875
2000
2125
2250
2375
2500
0.27
0.08
---
---
---
---
---
---
---
0.48
0.26
0.08
---
---
---
---
---
---
0.91
0.72
0.52
0.31
0.11
---
---
---
---
0.98
0.82
0.66
0.50
0.32
0.13
---
0.45
0.43
---
---
---
---
---
---
---
0.57
0.55
0.53
---
---
---
---
---
---
0.82
0.82
0.81
0.78
0.77
---
---
---
---
0.85
0.89
0.92
0.90
0.92
0.86
---
---
---
---
1
2
3
4
5
1
2
3
4
5
---
---
---
---
1.04
0.87
0.68
0.48
0.28
0.07
---
0.87
0.88
0.88
0.84
0.84
0.84
---
---
---
---
---
1.10
0.96
0.81
0.65
0.47
0.27
0.05
---
0.90
0.94
0.98
0.95
1.00
0.94
0.96
---
---
---
---
---
1.12
1.00
0.81
0.65
0.56
0.39
0.19
---
0.92
0.96
1.00
1.04
1.08
0.95
1.09
---
1.00
0.86
0.66
0.50
0.41
0.25
0.06
---
0.91
0.95
0.98
1.01
0.88
1.01
---
---
---
---
---
41
TABLE 37 – PULLEY ADJUSTMENT
Motor Pulley turns open
UNIT
Motor/Drive Combo
0
0.5
1135
1423
1265
1596
1423
1649
721
927
1083
712
911
1059
712
1
1.5
1054
1337
1188
1510
1337
1572
670
884
1044
669
862
1010
669
2
2.5
973
3
3.5
892
4
4.5
811
1078
958
1251
1078
1341
515
755
928
540
715
863
540
715
863
5
Medium Static
High Static
Medium Static
High Static
Medium Static
High Static
Standard Static
Medium Static
High Static
Standard Static
Medium Static
High Static
Standard Static
Medium Static
High Static
1175
1466
1303
1639
1466
1687
747
1094
1380
1226
1553
1380
1610
695
1013
1294
1150
1467
1294
1533
644
932
1207
1073
1380
1207
1457
592
819
986
604
788
936
604
788
936
851
1121
997
1294
1121
1380
541
776
948
561
739
887
561
739
887
770
1035
920
1208
1035
1303
489
733
909
518
690
838
518
690
838
3
04
05
06
Phase
3
1251
1112
1424
1251
1495
618
1164
1035
1337
1164
1418
566
798
967
583
764
912
583
764
912
Phase
3
Phase
3
949
1102
733
936
1084
733
906
1063
690
887
1035
690
863
841
07
08
09
Phase
1025
647
838
1006
626
813
3
Phase
986
647
961
626
3
936
1084
911
1059
887
1035
862
1010
838
986
813
961
Phase
--- Factory settings
42
ECONOMIZER, BAROMETRIC RELIEF AND PE PERFORMANCE
2500
2000
1500
1000
500
2500
Vertical Economizers
Horizontal Economizers
2000
1500
1000
500
0
5
3 - Ton
3 -5 Ton
½
-
Ton
-
½ Ton
8
8
6
6
0
0
0.05
0.1
0.15
0.2
0.25
0.3
0
0.05
0.1
0.15
0.2
0.25
0.3
RETURN DUCT STATIC PRESSURE(in. wg)
RETURN DUCT STATIC PRESSURE(in. wg)
C10233
C10236
Fig. 9 -- Barometric Relief Flow Capacity
Fig. 12 -- Barometric Relief Flow Capacity
6000
5000
4000
3000
2000
1000
0
6000
Horizontal Economizers
Vertical Economizers
5000
4000
3000
2000
1000
0
3 - TON
5
3 - 5 TON
6
-
1/2 Ton
-
1/2 Ton
8
6
8
0
0.1
0.2
0.3
0.4
0
0.1
0.2
0.3
0.4
RETURN DUCT STATIC PRESSUREDROP (in. wg)
RETURN DUCT STATIC PRESSUREDROP (in. wg)
C10235
C10238
Fig. 10 -- Return Air Pressure Drop
Fig. 13 -- Return Air Pressure Drop
2500
5000
4000
3000
2000
1000
0
2000
1500
3 - 5 Ton
6 - 8 1/2 Ton
3-8.5 Ton
1000
500
0
0
0.1
0.2 0.3
0.4
0.5
0
0.1
0.2
0.3
0.4
0.5
STATIC PRESSURE (in. wg)
STATIC PRESSURE (in. wg)
C10239
C10240
Fig. 11 -- Horizontal Power Exhaust Performance
Fig. 14 -- Vertical Power Exhaust Performance
43
44
45
46
47
48
49
50
TYPICAL WIRING DIAGRAMS
C08518
Fig. 15 -- 1--Stage Cooling Typical Power Diagram
51
TYPICAL WIRING DIAGRAMS (cont.)
C08577
Fig. 16 -- 2--Stage Cooling Typical Power Diagram
52
53
54
SEQUENCE OF OPERATION
On units with 2 stages of heat, when additional heat is
General
required, W2 closes and initiates power to the second
stage of the main gas valve. When the thermostat is
satisfied, W1 and W2 open and the gas valve closes,
interrupting the flow of gas to the main burners.
The sequence below describes the sequence of operation
for an electro-mechanical unit with and without a factory
installed EconoMi$ert IV (called “economizer” in this
sequence). For information regarding a direct digital
If the call for W1 lasted less than 1 minute, the heating
cycle will not terminate until 1 minute after W1 became
active. If the unit is controlled through a room thermostat
set for fan auto, the indoor-fan motor will continue to
operate for an additional 45 seconds then stop. If the
over-temperature limit opens after the indoor motor is
stopped, but within 10 minutes of W1 becoming inactive,
on the next cycle the time will be extended by 15 seconds.
The maximum delay is 3 minutes. Once modified, the fan
off delay will not change back to 45 seconds unless power
is reset to the control. A LED indicator is provided on the
IGC to monitor operation.
controller,
see
the
start-up,
operations,
and
troubleshooting manual for the applicable controller.
Electro--mechanical units with no economizer
Cooling —
When the thermostat calls for cooling, terminals G and Y1
are energized. As a result, the indoor-fan contactor (IFC)
and the compressor contactor (C1) are energized, causing
the indoor-an motor (IFM), compressor #1, and outdoor
fan to start. If the unit has 2 stages of cooling, the
thermostat will additionally energize Y2. The Y2 signal
will energize compressor contactor #2 (C2), causing
compressor #2 to start. Regardless of the number of
stages, the outdoor-fan motor runs continuously while
unit is cooling.
Electro--mechanical units with an economizer
Cooling —
When free cooling is not available, the compressors will
be controlled by the zone thermostat. When free cooling is
available, the outdoor-air damper is modulated by the
EconoMi$er IV control to provide a 50_F (10_C) to 55_F
(13_C) mixed-air temperature into the zone. As the mixed
air temperature fluctuates above 55_F (13_C) or below
50_F (10_C) dampers will be modulated (open or close)
to bring the mixed-air temperature back within control. If
mechanical cooling is utilized with free cooling, the
outdoor-air damper will maintain its current position at
the time the compressor is started. If the increase in
cooling capacity causes the mixed-air temperature to drop
below 45_F (7_C), then the outdoor-air damper position
will be decreased to the minimum position. If the
mixed-air temperature continues to fall, the outdoor-air
damper will close. Control returns to normal once the
mixed-air temperature rises above 48_F (9_C). The
power exhaust fans will be energized and de-energized, if
installed, as the outdoor-air damper opens and closes.
Heating
NOTE: Preferred Seriest (581J) units have either 1 or 2
stages of gas heat.
When the thermostat calls for heating, power is sent to W
on the Integrated Gas Controller (IGC) board. An LED
(light-emitting diode) on the IGC board turns on and
remains on during normal operation. A check is made to
ensure that the rollout switch and limit switch are closed.
If the check was successful, the induced-draft motor is
energized, and when its speed is satisfactory, as proven by
the “hall effect” sensor, the ignition activation period
begins. The burners will ignite within 5 seconds. If the
burners do not light, there is a 22-second delay before
another 5-second attempt. This sequence is repeated for
15 minutes or until the burners light. If, after the 15
minutes, the burners still have not lit, heating is locked
out. To reset the control, break 24-v power to the
thermostat.
If field-installed accessory CO2 sensors are connected to
When ignition occurs, the IGC board will continue to
monitor the condition of the rollout switch, the limit
switches, the “hall effect” sensor, as well as the flame
sensor. 45 seconds after ignition occurs, assuming the unit
is controlled through a room thermostat set for fan auto,
the indoor-fan motor will energize (and the outdoor-air
dampers will open to their minimum position). If, for
some reason, the over-temperature limit opens prior to the
start of the indoor fan blower, the unit will shorten the
45-second delay to 5 seconds less than the time from
initiation of heat to when the limit tripped. Gas will not be
interrupted to the burners and heating will continue. Once
the fan-on delay has been modified, it will not change
back to 45 seconds until power is reset to the control.
the EconoMi$er IV control,
a
demand controlled
ventilation strategy will begin to operate. As the CO2
level in the zone increases above the CO2 setpoint, the
minimum position of the damper will be increased
proportionally. As the CO2 level decreases because of the
increase in fresh air, the outdoor-air damper will be
proportionally closed. For EconoMi$er IV operation, there
must be a thermostat call for the fan (G). If the unit is
occupied and the fan is on, the damper will operate at
minimum position. Otherwise, the damper will be closed.
When the EconoMi$er IV control is in the occupied mode
and a call for cooling exists (Y1 on the thermostat), the
control will first check for indoor fan operation. If the fan
is not on, then cooling will not be activated. If the fan is
on, then the control will open the EconoMi$er IV damper
to the minimum position.
55
SEQUENCE OF OPERATION (cont.)
On the initial power to the EconoMi$er IV control, it will
Heating
take the damper up to 2 1/2 minutes before it begins to
position itself. After the initial power-up, further changes
in damper position can take up to 30 seconds to initiate.
Damper movement from full closed to full open (or vice
versa) will take between 1 1/2 and 2 1/2 minutes. If free
cooling can be used as determined from the appropriate
changeover command (switch, dry bulb, enthalpy curve,
differential dry bulb, or differential enthalpy), then the
control will modulate the dampers open to maintain the
mixed-air temperature setpoint at 50_F (10_C) to 55_F
(13_C). If there is a further demand for cooling (cooling
second stage - Y2 is energized), then the control will
bring on compressor stage 1 to maintain the mixed-air
temperature setpoint. The EconoMi$er IV damper will be
open at maximum position. EconoMi$er IV operation is
limited to a single compressor.
The sequence of operation for the heating is the same as
an electromechanical unit with no economizer. The only
difference is how the economizer acts. The economizer
will stay at the Economizer Minimum Position while the
evaporator fan is operating. The outdoor-air damper is
closed when the indoor fan is not operating.
56
GUIDE SPECIFICATIONS -- 581J*04--09
Note about this specification:
This specification is in the “Masterformat” as published by the Construction Specification Institute. Please feel free to copy
this specification directly into your building spec.
Gas Heat/Electric Cooling Packaged Rooftop
HVAC Guide Specifications
Size Range:
3 to 8.5 Nominal Tons
Section
Description
Schedules for Decentralized HVAC Equipment
Decentralized Unitary HVAC Equipment Schedule
23 06 80
23 06 80.13
23 06 80.13.A. Rooftop unit schedule
1. Schedule is per the project specification requirements.
23 07 16
HVAC Equipment Insulation
23 07 16.13
Decentralized, Rooftop Units:
23 07 16.13.A. Evaporator fan compartment:
1. Interior cabinet surfaces shall be insulated with a minimum 1/2-in. thick, minimum 1 1/2 lb density, flexible
fiberglass insulation bonded with a phenolic binder, neoprene coated on the air side.
2. Insulation and adhesive shall meet NFPA 90A requirements for flame spread and smoke generation.
23 07 16.13.B. Gas heat compartment:
1. Aluminum foil-faced fiberglass insulation shall be used.
2. Insulation and adhesive shall meet NFPA 90A requirements for flame spread and smoke generation.
23 09 13
23 09 13.23
23 09 13.23.A. Thermostats
Instrumentation and Control Devices for HVAC
Sensors and Transmitters
1. Thermostat must
a. energize both “W” and “G” when calling for heat.
b. have capability to energize 2 different stages of cooling, and 2 different stages of heating.
c. include capability for occupancy scheduling.
23 09 23
23 09 23.13
23 09 23.13.A. NA
Direct-digital Control system for HVAC
Decentralized, Rooftop Units:
1. Shall be ASHRAE 62-2001 compliant.
2. Shall accept 18-32 VAC input power.
3. Shall have an operating temperature range from -40_F (-40_C) to 158_F (70_C), 10% - 95% RH (non-condens-
ing).
4. Shall include an integrated economizer controller to support an economizer with 4 to 20 mA actuator input and no
microprocessor controller.
5. Controller shall accept the following inputs: space temperature, setpoint adjustment, outdoor air temperature, in-
door air quality, outdoor air quality, indoor relative humidity, compressor lock-out, fire shutdown, enthalpy, fan
status, remote time clock/door switch.
6. Shall accept a CO2 sensor in the conditioned space, and be Demand Control Ventilation (DCV) ready.
7. Shall provide the following outputs: economizer, fan, cooling stage 1, cooling stage 2, heat stage 1, heat stage 2,
heat stage 3/ exhaust/ reversing valve/ dehumidify/ occupied.
8. Unit shall provide surge protection for the controller through a circuit breaker.
9. Shall be Internet capable, and communicate at a Baud rate of 38.4K or faster
10. Shall have an LED display independently showing the status of activity on the communication bus, and processor
operation.
57
11. Shall include an EIA-485 protocol communication port, an access port for connection of either a computer or a
Bryant technician tool, an EIA-485 port for network communication to intelligent space sensors and displays, and
a port to connect an optional LonWorks plug-in communications card.
12. Shall have built-in support for Bryant technician tool.
13. Software upgrades will be accomplished by local download. Software upgrades through chip replacements are not
allowed.
14. Shall be shock resistant in all planes to 5G peak, 11ms during operation, and 100G peak, 11ms during storage.
15. Shall be vibration resistant in all planes to 1.5G @ 20-300 Hz.
16. Shall support a bus length of 4000 ft (1219m) max, 60 devices per 1000 ft (305m) section, and 1 RS-485 repeater
per 1000 ft (305m) sections.
23 09 23.13.B. RTU-MP - Open protocol, direct digital controller:
1. Shall be ASHRAE 62-2001 compliant.
2. Shall accept 18-30VAC, 50-60Hz, and consumer 15VA or less power.
3. Shall have an operating temperature range from -40_F (-40_C) to 130_F (54_C), 10% - 90% RH (non-condens-
ing).
4. Shall include built-in protocol for BACNET (MS/TP and PTP modes), Modbus (RTU and ASCII), Johnson N2
and LonWorks. LonWorks Echelon processor required for all Lon applications shall be contained in separate com-
munication board.
5. Shall allow access of up to 62 network variables (SNVT). Shall be compatible with all open controllers
6. Baud rate Controller shall be selectable using a dipswitch.
7. Shall have an LED display independently showing the status of serial communication, running, errors, power, all
digital outputs, and all analog inputs.
8. Shall accept the following inputs: space temperature, setpoint adjustment, outdoor air temperature, indoor air qu-
ality, outdoor air quality, compressor lock-out, fire shutdown, enthalpy switch, and fan status/filter status/ humid-
ity/ remote occupancy.
9. Shall provide the following outputs: economizer, fan, cooling stage 1, cooling stage 2, heat stage 1, heat stage 2,
heat stage 3/ exhaust/ reversing valve.
10. Shall have built-in surge protection circuitry through solid state polyswitches. Polyswitches shall be used on in-
coming power and network connections. Polyswitches will return to normal when the “trip” condition clears.
11. Shall have a battery back-up capable of a minimum of 10,000 hours of data and time clock retention during power
outages.
12. Shall have built-in support for Bryant technician tool.
13. Shall include an EIA-485 protocol communication port, an access port for connection of either a computer or a
Bryant technician tool, an EIA-485 port for network communication to intelligent space sensors and displays, and
a port to connect an optional LonWorks communications card.
14. Software upgrades will be accomplished by either local or remote download. No software upgrades through chip
replacements are allowed.
23 09 33
23 09 33.13
23 09 33.13.A. General:
Electric and Electronic Control System for HVAC
Decentralized, Rooftop Units:
1. Shall be complete with self-contained low-voltage control circuit protected by a resettable circuit breaker on the
24-v transformer side. Transformer shall have 75VA capability.
2. Shall utilize color-coded wiring.
3. Shall include a central control terminal board to conveniently and safely provide connection points for vital con-
trol functions such as: smoke detectors, phase monitor, gas controller, economizer, thermostat, DDC control op-
tions, and low and high pressure switches.
4. The heat exchanger shall be controlled by an integrated gas controller (IGC) microprocessor. See heat exchanger
section of this specification.
5. Unit shall include a minimum of one 8-pin screw terminal connection board for connection of control wiring.
23 09 33.23.B. Safeties:
1. Compressor over-temperature, over-current. High internal pressure differential.
2. Low-pressure switch.
a. Units with 2 compressors shall have different sized connectors for the circuit 1 and circuit 2 low and high pres-
sure switches. They shall physically prevent the cross-wiring of the safety switches between circuits 1 and 2.
b. Low pressure switch shall use different color wire than the high pressure switch. The purpose is to assist the
installer and service technician to correctly wire and or troubleshoot the rooftop unit.
58
3. High-pressure switch.
a. Units with 2 compressors shall have different sized connectors for the circuit 1 and circuit 2 low and high pres-
sure switches. They shall physically prevent the cross-wiring of the safety switches between circuits 1 and 2.
b. High pressure switch shall use different color wire than the low pressure switch. The purpose is to assist the
installer and service technician to correctly wire and or troubleshoot the rooftop unit.
4. Automatic reset, motor thermal overload protector.
5. Heating section shall be provided with the following minimum protections:
a. High-temperature limit switches.
b. Induced draft motor speed sensor.
c. Flame rollout switch.
d. Flame proving controls.
23 09 93
23 09 93.13
23 09 93.13
23 40 13
23 40 13.13
Sequence of Operations for HVAC Controls
Decentralized, Rooftop Units:
INSERT SEQUENCE OF OPERATION
Panel Air Filters
Decentralized, Rooftop Units:
23 40 13.13.A. Standard filter section
1. Shall consist of factory-installed, low velocity, disposable 2-in. thick fiberglass filters of commercially available
sizes.
2. Unit shall use only one filter size. Multiple sizes are not acceptable.
3. Filters shall be accessible through an access panel with “no-tool” removal as described in the unit cabinet section
of this specification (23 81 19.13.H).
23 81 19
23 81 19.13
23 81 19.13.A. General
Self-Contained Air Conditioners
Small-Capacity Self-Contained Air Conditioners (581J*04-09)
1. Outdoor, rooftop mounted, electrically controlled, heating and cooling unit utilizing a fully hermetic scroll com-
pressor(s) for cooling duty and gas combustion for heating duty.
2. Factory assembled, single-piece heating and cooling rooftop unit. Contained within the unit enclosure shall be all
factory wiring, piping, controls, and special features required prior to field start-up.
3. Unit shall use environmentally sound, PuronR refrigerant.
4. Unit shall be installed in accordance with the manufacturer’s instructions.
5. Unit must be selected and installed in compliance with local, state, and federal codes.
23 81 19.13.B. Quality Assurance
1. Unit meets ASHRAE 90.1-2007 minimum efficiency requirements.
2. 3 phase units are Energy Star certified.
3. Unit shall be rated in accordance with AHRI Standards 210/240 and 340/360.
4. Unit shall be designed to conform to ASHRAE 15, 2001.
5. Unit shall be UL-tested and certified in accordance with ANSI Z21.47 Standards and UL-listed and certified
under Canadian standards as a total package for safety requirements.
6. Insulation and adhesive shall meet NFPA 90A requirements for flame spread and smoke generation.
7. Unit casing shall be capable of withstanding 500-hour salt spray exposure per ASTM B117 (scribed specimen).
8. Unit casing shall be capable of withstanding Federal Test Method Standard No. 141 (Method 6061) 5000-hour salt
spray.
9. Unit shall be designed in accordance with ISO 9001:2008, and shall be manufactured in a facility registered by
ISO 9001:2008.
10. Roof curb shall be designed to conform to NRCA Standards.
11. Unit shall be subjected to a completely automated run test on the assembly line. The data for each unit will be
stored at the factory, and must be available upon request.
12. Unit shall be designed in accordance with UL Standard 1995, including tested to withstand rain.
13. Unit shall be constructed to prevent intrusion of snow and tested to prevent snow intrusion into the control box up
to 40 mph.
14. Unit shake tested to assurance level 1, ASTM D4169 to ensure shipping reliability.
23 81 19.13.C. Delivery, Storage, and Handling
59
1. Unit shall be stored and handled per manufacturer’s recommendations.
2. Lifted by crane requires either shipping top panel or spreader bars.
3. Unit shall only be stored or positioned in the upright position.
23 81 19.13.E. Project Conditions
1. As specified in the contract.
23 81 19.13.F. Operating Characteristics
1. Unit shall be capable of starting and running at 125_F (52_C) ambient outdoor temperature, meeting maximum
load criteria of AHRI Standard 210/240 or 360 at ± 10% voltage.
2. Compressor with standard controls shall be capable of operation down to 35_F (2_C), ambient outdoor temperat-
ures. Accessory low ambient kits shall be available if operation below 35_F (2_C), is required. See below for
head pressure control package or winter start kit.
3. Unit shall discharge supply air vertically or horizontally as shown on contract drawings.
4. Unit shall be factory configured for vertical supply & return configurations.
5. Unit shall be field convertible from vertical to horizontal configuration without the use of special conversion kits.
6. Unit shall be capable of mixed operation: vertical supply with horizontal return or horizontal supply with vertical
return.
23 81 19.13.G. Electrical Requirements
1. Main power supply voltage, phase, and frequency must match those required by the manufacturer.
23 81 19.13.H. Unit Cabinet
1. Unit cabinet shall be constructed of galvanized steel, and shall be bonderized and coated with a pre-painted baked
enamel finish on all externally exposed surfaces.
2. Unit cabinet exterior paint shall be: film thickness, (dry) 0.003 inches minimum, gloss (per ASTM D523, 60_F /
16_C): 60, Hardness: H-2H Pencil hardness.
3. Evaporator fan compartment interior cabinet insulation shall conform to AHRI Standards 210/240 or 340/360
minimum exterior sweat criteria. Interior surfaces shall be insulated with a minimum 1/2-in. thick, 1 lb density,
flexible fiberglass insulation, neoprene coated on the air side. Aluminum foil-faced fiberglass insulation shall be
used in the gas heat compartment.
4. Base of unit shall have a minimum of four locations for thru-the-base gas and electrical connections (factory
installed or field installed), standard.
5. Base Rail
a. Unit shall have base rails on a minimum of 4 sides.
b. Holes shall be provided in the base rails for rigging shackles to facilitate maneuvering and overhead rigging.
c. Holes shall be provided in the base rail for moving the rooftop by fork truck.
d. Base rail shall be a minimum of 16 gauge thickness.
6. Condensate pan and connections:
a. Shall be an internally sloped condensate drain pan made of a non-corrosive material.
b. Shall comply with ASHRAE Standard 62.
c. Shall use a 3/4” -14 NPT drain connection, possible either through the bottom or side of the drain pan. Con-
nection shall be made per manufacturer’s recommendations.
7. Top panel:
a. Shall be a single piece top panel on 04 thru 09 sizes.
8. Gas Connections:
a. All gas piping connecting to unit gas valve shall enter the unit cabinet at a single location on side of unit (ho-
rizontal plane).
b. Thru-the-base capability
(1.) Standard unit shall have a thru-the-base gas-line location using a raised, embossed portion of the unit
basepan.
(2.) Optional, factory-approved, water-tight connection method must be used for thru-the-base gas connec-
tions.
(3.) No basepan penetration, other than those authorized by the manufacturer, is permitted.
9. Electrical Connections
a. All unit power wiring shall enter unit cabinet at a single, factory-prepared, knockout location.
b. Thru-the-base capability.
(1.) Standard unit shall have a thru-the-base electrical location(s) using a raised, embossed portion of the unit
basepan.
60
(2.) Optional, factory-approved, water-tight connection method must be used for thru-the-base electrical con-
nections.
(3.) No basepan penetration, other than those authorized by the manufacturer, is permitted.
10. Component access panels (standard)
a. Cabinet panels shall be easily removable for servicing.
b. Unit shall have one factory installed, tool-less, removable, filter access panel.
c. Panels covering control box, indoor fan, indoor fan motor, gas components (where applicable), and com-
pressors shall have a molded composite handles.
d. Handles shall be UV modified, composite. They shall be permanently attached, and recessed into the panel.
e. Screws on the vertical portion of all removable access panel shall engage into heat resistant, molded compos-
ite collars.
f. Collars shall be removable and easily replaceable using manufacturer recommended parts.
23 81 19.13.I. Gas Heat
1. General
a. Heat exchanger shall be an induced draft design. Positive pressure heat exchanger designs shall not be al-
lowed.
b. Shall incorporate a direct-spark ignition system and redundant main gas valve.
c. Gas supply pressure at the inlet to the rooftop unit gas valve must match that required by the manufacturer.
2. The heat exchanger shall be controlled by an integrated gas controller (IGC) microprocessor.
a. IGC board shall notify users of fault using an LED (light-emitting diode).
b. The LED shall be visible without removing the control box access panel.
c. IGC board shall contain algorithms that modify evaporator-fan operation to prevent future cycling on high
temperature limit switch.
d. Unit shall be equipped with anti-cycle protection with one short cycle on unit flame rollout switch or 4 con-
tinuous short cycles on the high temperature limit switch. Fault indication shall be made using an LED.
3. Standard Heat Exchanger construction
a. Heat exchanger shall be of the tubular-section type constructed of a minimum of 20-gauge steel coated with a
nominal 1.2 mil aluminum-silicone alloy for corrosion resistance.
b. Burners shall be of the in-shot type constructed of aluminum-coated steel.
c. Burners shall incorporate orifices for rated heat output up to 2000 ft (610m) elevation. Additional accessory
kits may be required for applications above 2000 ft (610m) elevation, depending on local gas supply condi-
tions.
d. Each heat exchanger tube shall contain multiple dimples for increased heating effectiveness.
4. Optional Stainless Steel Heat Exchanger construction
a. Use energy saving, direct-spark ignition system.
b. Use a redundant main gas valve.
c. Burners shall be of the in-shot type constructed of aluminum-coated steel.
d. All gas piping shall enter the unit cabinet at a single location on side of unit (horizontal plane).
e. The optional stainless steel heat exchanger shall be of the tubular-section type, constructed of a minimum of
20-gauge type 409 stainless steel.
f. Type 409 stainless steel shall be used in heat exchanger tubes and vestibule plate.
g. Complete stainless steel heat exchanger allows for greater application flexibility.
5. Optional Low NOx Heat Exchanger construction
a. Low NOx reduction shall be provided to reduce nitrous oxide emissions to meet California’s Air Quality Man-
agement District (SCAQMD) low-NOx emissions requirement of 40 nanograms per joule or less.
b. Primary tubes and vestibule plates on low NOx units shall be 409 stainless steel. Other components shall be
aluminized steel.
6. Induced draft combustion motor and blower
a. Shall be a direct-drive, single inlet, forward-curved centrifugal type.
b. Shall be made from steel with a corrosion-resistant finish.
c. Shall have permanently lubricated sealed bearings.
d. Shall have inherent thermal overload protection.
e. Shall have an automatic reset feature.
61
23 81 19.13.J. Coils
1. Standard Aluminum Fin/Copper Tube Coils:
a. Standard evaporator and condenser coils shall have aluminum lanced plate fins mechanically bonded to seam-
less internally grooved copper tubes with all joints brazed.
b. Evaporator coils shall be leak tested to 150 psig, pressure tested to 450 psig, and qualified to UL 1995 burst
test at 1775 psig.
c. Condenser coils shall be leak tested to 150 psig, pressure tested to 650 psig, and qualified to UL 1995 burst
test at 1980 psig.
2. Optional Pre-coated aluminum-fin condenser coils:
a. Shall have a durable epoxy-phenolic coating to provide protection in mildly corrosive coastal environments.
b. Coating shall be applied to the aluminum fin stock prior to the fin stamping process to create an inert barrier
between the aluminum fin and copper tube.
c. Epoxy-phenolic barrier shall minimize galvanic action between dissimilar metals.
3. Optional Copper-fin evaporator and condenser coils:
a. Shall be constructed of copper fins mechanically bonded to copper tubes and copper tube sheets.
b. Galvanized steel tube sheets shall not be acceptable.
c. A polymer strip shall prevent coil assembly from contacting the sheet metal coil pan to minimize potential for
galvanic corrosion between coil and pan.
4. Optional E-coated aluminum-fin evaporator and condenser coils:
a. Shall have a flexible epoxy polymer coating uniformly applied to all coil surface areas without material
bridging between fins.
b. Coating process shall ensure complete coil encapsulation of tubes, fins and headers.
c. Color shall be high gloss black with gloss per ASTM D523-89.
d. Uniform dry film thickness from 0.8 to 1.2 mil on all surface areas including fin edges.
e. Superior hardness characteristics of 2H per ASTM D3363-92A and cross-hatch adhesion of 4B-5B per ASTM
D3359-93.
f. Impact resistance shall be up to 160 in.-lb (ASTM D2794-93).
g. Humidity and water immersion resistance shall be up to minimum 1000 and 250 hours respectively (ASTM
D2247-92 and ASTM D870-92).
h. Corrosion durability shall be confirmed through testing to be no less than 1000 hours salt spray per ASTM
B117-90.
5. Optional E-coated aluminum-fin, aluminum tube condenser coils:
a. Shall have a flexible epoxy polymer coating uniformly applied to all coil external surface areas without mater-
ial bridging between fins or louvers.
b. Coating process shall ensure complete coil encapsulation, including all exposed fin edges.
c. E-coat thickness of 0.8 to 1.2 mil with top coat having a uniform dry film thickness from 1.0 to 2.0 mil on all
external coil surface areas, including fin edges, shall be provided.
d. Shall have superior hardness characteristics of 2H per ASTM D3363-00 and cross-hatch adhesion of 4B-5B
per ASTM D3359-02.
e. Shall have superior impact resistance with no cracking, chipping or peeling per NSF/ANSI 51-2002 Method
10.2.
23 81 19.13.K. Refrigerant Components
1. Refrigerant circuit shall include the following control, safety, and maintenance features:
a. Thermostatic Expansion Valve (TXV) shall help provide optimum performance across the entire operating
range. Shall contain removable power element to allow change out of power element and bulb without remov-
ing the valve body.
b. Refrigerant filter drier - Solid core design.
c. Service gauge connections on suction and discharge lines.
d. Pressure gauge access through a specially designed access port in the top panel of the unit.
2. There shall be gauge line access port in the skin of the rooftop, covered by a black, removable plug.
a. The plug shall be easy to remove and replace.
b. When the plug is removed, the gauge access port shall enable maintenance personnel to route their pressure
gauge lines.
c. This gauge access port shall facilitate correct and accurate condenser pressure readings by enabling the read-
ing with the compressor access panel on.
62
d. The plug shall be made of a leak proof, UV-resistant, composite material.
3. Compressors
a. Unit shall use fully hermetic, scroll compressor for each independent refrigeration circuit.
b. Models shall be available with single compressor/single stage cooling designs on 04 – 07 sizes models, and 2
compressor/2 stage cooling models on 08 – 09 sizes.
c. Compressor motors shall be cooled by refrigerant gas passing through motor windings.
d. Compressors shall be internally protected from high discharge temperature conditions.
e. Compressors shall be protected from an over-temperature and over-amperage conditions by an internal, motor
overload device.
f. Compressor shall be factory mounted on rubber grommets.
g. Compressor motors shall have internal line break thermal, current overload and high pressure differential pro-
tection.
h. Crankcase heaters shall not be required for normal operating range, unless provided by the factory.
23 81 19.13.L. Filter Section
1. Filters access is specified in the unit cabinet section of this specification.
2. Filters shall be held in place by a pivoting filter tray, facilitating easy removal and installation.
3. Shall consist of factory-installed, low velocity, throw-away 2-in. thick fiberglass filters.
4. Filters shall be standard, commercially available sizes.
5. Only one size filter per unit is allowed.
23 81 19.13.M. Evaporator Fan and Motor
1. Evaporator fan motor:
a. Shall have permanently lubricated bearings.
b. Shall have inherent automatic-reset thermal overload protection or circuit breaker.
c. Shall have a maximum continuous bhp rating for continuous duty operation; no safety factors above that rating
shall be required.
2. Electric Drive (Direct Drive) X13 – 5 Speed/Torque Evaporator Fan:
a. Multi speed motor with easy quick adjustment settings.
b. Blower fan shall be double-inlet type with forward-curved blades.
c. Shall be constructed from steel with a corrosion resistant finish and dynamically balanced.
d. Standard on all 04-06 models with 208/230/1/60 operation
e. Standard on all 04-06 3-phase models, with optional belt drive.
3. Belt-driven Evaporator Fan:
a. Belt drive shall include an adjustable-pitch motor pulley.
b. Shall use sealed, permanently lubricated ball-bearing type.
c. Blower fan shall be double-inlet type with forward-curved blades.
d. Shall be constructed from steel with a corrosion resistant finish and dynamically balanced.
e. Standard on all 07-09 size models. Optional on all 04-06 3-phase models.
23 81 19.13.N. Condenser Fans and Motors
1. Condenser fan motors:
a. Shall be a totally enclosed motor.
b. Shall use permanently lubricated bearings.
c. Shall have inherent thermal overload protection with an automatic reset feature.
d. Shall use a shaft-down design on 04 to 09 models.
2. Condenser Fans:
a. Shall be a direct-driven propeller type fan.
b. Shall have aluminum blades riveted to corrosion-resistant steel spiders and shall be dynamically balanced.
23 81 19.13.O. Special Features Options and Accessories
1. Integrated Economizers:
a. Integrated, gear-driven parallel modulating blade design type capable of simultaneous economizer and com-
pressor operation.
b. Independent modules for vertical or horizontal return configurations shall be available. Vertical return modules
shall be available as a factory installed option.
c. Damper blades shall be galvanized steel with composite gears. Plastic or composite blades on intake or return
shall not be acceptable.
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d. Shall include all hardware and controls to provide free cooling with outdoor air when temperature and/or hu-
midity are below setpoints.
e. Shall be equipped with gear driven dampers for both the outdoor ventilation air and the return air for positive
air stream control.
f. Shall be equipped with low-leakage dampers, not to exceed 2% leakage at 1 in. wg pressure differential.
g. Shall be capable of introducing up to 100% outdoor air.
h. Shall be equipped with a barometric relief damper capable of relieving up to 100% return air.
i. Shall be designed to close damper(s) during loss-of-power situations with spring return built into motor.
j. Dry bulb outdoor-air temperature sensor shall be provided as standard. Outdoor air sensor setpoint shall be
adjustable and shall range from 40 to 100_F / 4 to 38_C. Additional sensor options shall be available as ac-
cessories.
k. The economizer controller shall also provide control of an accessory power exhaust unit. function. Factory set
at 100%, with a range of 0% to 100%.
l. The economizer shall maintain minimum airflow into the building during occupied period and provide design
ventilation rate for full occupancy. A remote potentiometer may be used to override the damper setpoint.
m. Dampers shall be completely closed when the unit is in the unoccupied mode.
n. Economizer controller shall accept a 2-10Vdc CO2 sensor input for IAQ/DCV control. In this mode, dampers
shall modulate the outdoor-air damper to provide ventilation based on the sensor input.
o. Compressor lockout sensor shall open at 35_F (2_C) and close closes at 50_F (10_C).
p. Actuator shall be direct coupled to economizer gear. No linkage arms or control rods shall be acceptable.
q. Economizer controller shall provide indications when in free cooling mode, in the DCV mode, or the exhaust
fan contact is closed.
2. Two-Position Damper
a. Damper shall be a Two-Position Damper. Damper travel shall be from the full closed position to the field ad-
justable %-open setpoint.
b. Damper shall include adjustable damper travel from 25% to 100% (full open).
c. Damper shall include single or dual blade, gear driven dampers and actuator motor.
d. Actuator shall be direct coupled to damper gear. No linkage arms or control rods shall be acceptable.
e. Damper will admit up to 100% outdoor air for applicable rooftop units.
f. Damper shall close upon indoor (evaporator) fan shutoff and/or loss of power.
g. The damper actuator shall plug into the rooftop unit’s wiring harness plug. No hard wiring shall be required.
h. Outside air hood shall include aluminum water entrainment filter.
3. Manual damper
a. Manual damper package shall consist of damper, air inlet screen, and rain hood which can be preset to admit
up to 25 or 50% outdoor air for year round ventilation.
4. Head Pressure Control Package
a. Controller shall control coil head pressure by condenser-fan speed modulation or condenser-fan cycling and
wind baffles.
b. Shall consist of solid-state control and condenser-coil temperature sensor to maintain condensing temperature
between 90_F (32_C) and 110_F (43_C)at outdoor ambient temperatures down to -20_F (-29_C).
5. Propane Conversion Kit
a. Package shall contain all the necessary hardware and instructions to convert a standard natural gas unit for use
with liquefied propane, up to 2000 ft (610m) elevation.
b. Additional accessory kits may be required for applications above 2000 ft (610m) elevation.
6. Flue Shield
a. Flue shield shall provide protection from the hot sides of the gas flue hood.
7. Condenser Coil Hail Guard Assembly
a. Shall protect against damage from hail.
b. Shall be of louvered style.
8. Unit-Mounted, Non-Fused Disconnect Switch:
a. Switch shall be factory-installed, internally mounted.
b. National Electric Code (NEC) and UL approved non-fused switch shall provide unit power shutoff.
c. Shall be accessible from outside the unit.
d. Shall provide local shutdown and lockout capability.
9. Convenience Outlet:
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a. Powered convenience outlet.
(1.) Outlet shall be powered from main line power to the rooftop unit.
(2.) Outlet shall be powered from line side or load side of disconnect by installing contractor, as required by
code. If outlet is powered from load side of disconnect, unit electrical ratings shall be UL certified and
rated for additional outlet amperage.
(3.) Outlet shall be factory-installed and internally mounted with easily accessible 115-v female receptacle.
(4.) Outlet shall include 15 amp GFI receptacles with independent fuse protection.
(5.) Voltage required to operate convenience outlet shall be provided by a factory-installed step-down trans-
former.
(6.) Outlet shall be accessible from outside the unit.
(7.) Outlet shall include a field-installed “Wet in Use” cover.
b. Non-Powered convenience outlet.
(1.) Outlet shall be powered from a separate 115/120v power source.
(2.) A transformer shall not be included.
(3.) Outlet shall be factory-installed and internally mounted with easily accessible 115-v female receptacle.
(4.) Outlet shall include 15 amp GFI receptacles with independent fuse protection.
(5.) Outlet shall be accessible from outside the unit.
(6.) Outlet shall include a field-installed “Wet in Use” cover.
10. Flue Discharge Deflector:
a. Flue discharge deflector shall direct unit exhaust vertically instead of horizontally.
b. Deflector shall be defined as a “natural draft” device by the National Fuel and Gas (NFG) code.
11. Thru-the-Base Connectors:
a. Kits shall provide connectors to permit gas and electrical connections to be brought to the unit through the
unit basepan.
b. Minimum of four connection locations per unit.
12. Propeller Power Exhaust:
a. Power exhaust shall be used in conjunction with an integrated economizer.
b. Independent modules for vertical or horizontal return configurations shall be available.
c. Horizontal power exhaust is shall be mounted in return ductwork.
d. Power exhaust shall be controlled by economizer controller operation. Exhaust fans shall be energized when
dampers open past the 0-100% adjustable setpoint on the economizer control.
13. Roof Curbs (Vertical):
a. Full perimeter roof curb with exhaust capability providing separate air streams for energy recovery from the
exhaust air without supply air contamination.
b. Formed galvanized steel with wood nailer strip and shall be capable of supporting entire unit weight.
c. Permits installation and securing of ductwork to curb prior to mounting unit on the curb.
14. High Altitude Gas Conversion Kit:
a. Package shall contain all the necessary hardware and instructions to convert a standard natural gas unit to op-
erate from 2000-7000 ft (610 to 2134m) elevation with natural gas or from 0-7000 ft (90-2134m) elevation
with liquefied propane.
15. Outdoor Air Enthalpy Sensor:
a. The outdoor air enthalpy sensor shall be used to provide single enthalpy control. When used in conjunction
with a return air enthalpy sensor, the unit will provide differential enthalpy control. The sensor allows the unit
to determine if outside air is suitable for free cooling.
16. Return Air Enthalpy Sensor:
a. The return air enthalpy sensor shall be used in conjunction with an outdoor air enthalpy sensor to provide dif-
ferential enthalpy control.
17. Indoor Air Quality (CO2) Sensor:
a. Shall be able to provide demand ventilation indoor air quality (IAQ) control.
b. The IAQ sensor shall be available in duct mount, wall mount, or wall mount with LED display. The setpoint
shall have adjustment capability.
18. Smoke detectors (factory-installed only):
a. Shall be a Four-Wire Controller and Detector.
b. Shall be environmental compensated with differential sensing for reliable, stable, and drift-free sensitivity.
c. Shall use magnet-activated test/reset sensor switches.
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d. Shall have tool-less connection terminal access.
e. Shall have a recessed momentary switch for testing and resetting the detector.
f. Controller shall include:
(1.) One set of normally open alarm initiation contacts for connection to an initiating device circuit on a fire
alarm control panel.
(2.) Two Form-C auxiliary alarm relays for interface with rooftop unit or other equipment.
(3.) One Form-C supervision (trouble) relay to control the operation of the Trouble LED on a remote test/reset
station.
(4.) Capable of direct connection to two individual detector modules.
(5.) Can be wired to up to 14 other duct smoke detectors for multiple fan shutdown applications
19. Winter start kit
a. Shall contain a bypass device around the low pressure switch.
b. Shall be required when mechanical cooling is required down to 25_F (-4_C).
c. Shall not be required to operate on an economizer when below an outdoor ambient of 40_F (4_C).
20. Time Guard
a. Shall prevent compressor short cycling by providing a 5-minute delay (±2 minutes) before restarting a com-
pressor after shutdown for any reason.
b. One device shall be required per compressor.
21. Hinged Access Panels
a. Shall provide easy access through integrated quarter turn latches.
b. Shall be on major panels of – filter, control box, fan motor and compressor
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