package gas heating/electric cooling, r−410a

package gas heating/electric cooling, r−410a
RGS
Product Specifications
PACKAGE GAS HEATING/ELECTRIC COOLING, R−410A SINGLE PACKAGE
ROOFTOP 6 − 12.5 TONS (3−Phase)
BUILT TO LAST, EASY TO INSTALL AND SERVICE
• One−piece, high efficiency gas heating and electric cooling with a low profile, prewired, tested, and charged at the factory
• All units are convertible from downflow to horizontal air flow; no special adapter curbs are necessary
• Full perimeter base rail with built-in rigging adapters and fork truck slots
• Pre−painted exterior panels and primer−coated interior panels tested to 500 hours salt spray
protection
• Fully insulated cabinet
• Single-stage or two stage cooling capacity control
RGS072
• Redundant gas valve, up to two stages of heating
• Exclusive IGC solid-state control for on-board diagnostics with LED error code designation,
burner control logic and energy saving indoor fan motor delay
• High efficiency, gas heat with induced draft flue exhaust design
• Single or dual scroll compressor with internal line−break overload protection
• All units have high and low pressure switches
• Two inch disposable fiberglass type return air filters in dedicated rack with tool−less filter access door
• Refrigerant circuits contain a liquid line filter drier to trap dirt and moisture
RGS091−121
• Indoor and outdoor coils constructed of aluminum fins mechanically bonded to seamless copper tubes
• Newly−designed indoor refrigerant header for easier maintenance and replacement
• Exclusive non−corrosive composite condensate pan in accordance with ASHRAE 62 Standard,
sloping design; side or center drain
• Belt drive evaporator−fan motor and pulley combinations available to meet any application
• Access panels with easy grip handles provide quick and easy access to the blower and blower
motor, control box, and compressor.
Use of the AHRI Certified TM Mark indicates
a manufacturer’s participation in the program.
For verification of certification for individual
products, go to www.ahridirectory.org .
UNIT PERFORMANCE DATA − Single Stage Cooling
COOLING
UNIT
RGS072*∧AA0AAA
RGS091*∧AA0AAA
RGS101*∧AA0AAA
RGS121*∧AA0AAA
Nominal
Tons
6
7-1/2
8-1/2
10
Net Cap.
(Btuh)
70,000
88,000
97,000
117,000
SEER
N/A
N/A
N/A
N/A
GAS HEATING
EER
11.0
11.0
11.0
11.0
Input Cap. (Btuh)
72,000-150,000
125,000-224,000
125,000-224,000
180,000-250,000
AFUE %
80-81.0
80-81.0
80-81.0
80-81.0
Unit Dimensions
HxWxL
41-3/8” x 44“ x 74-3/8”
41-3/8” x 59-1/2“ x 88-1/8”
49-3/8” x 59-1/2“ x 88-1/8”
49-3/8” x 59-1/2“ x 88-1/8”
Unit
Weight
lb. [kg]
652 [296]
810 [367]
910 [413]
965 [438]
Unit Dimensions
HxWxL
41-3/8” x 59-1/2“ x 88-1/8”
49-3/8” x 59-1/2“ x 88-1/8”
49-3/8” x 59-1/2“ x 88-1/8”
49-3/8” x 59-1/2“ x 88-1/8”
Unit
Weight
lb. [kg]
810 [367]
910 [413]
965 [438]
1116 [506]
UNIT PERFORMANCE DATA − Dual Stage Cooling
COOLING
UNIT
RGS090*∧AA0AAA
RGS102*∧AA0AAA
RGS120*∧AA0AAA
RGS150*∧AA0AAA
Nominal
Tons
7-1/2
8-1/2
10
12-1/2
Net Cap.
(Btuh)
83,000
97,000
114,000
140,000
SEER
N/A
N/A
N/A
N/A
GAS HEATING
EER
11.0
11.0
11.1
10.8
Input Cap. (Btuh)
125,000-224,000
125,000-224,000
180,000-250,000
180,000-250,000
AFUE %
80-81.0
80-81.0
80-81.0
80-81.0
* Indicates Unit voltage: H = 208/230−3−60, L = 460−3−60, S = 575−3−60
∧ See model nomenclature listing for gas heating options.
NOTE: BASE MODEL NUMBERS LISTED. SEE MODEL NOMENCLATURE LISTING FOR ADDITIONAL OPTIONS
509 31 3508 00
03/03/10
FEATURES AND BENEFITS CONTINUED
• “No−strip” screw system has superior holding power and guides screws into position while
preventing the screw from stripping the unit’s metal.
• Newly designed terminal board facilitates simple safety circuit troubleshooting and simplified
control box arrangement
• Outdoor temperature cooling operation range up to 115°F (46°C) and
down to 25°F ( −4°C ) using winter start kit
• Fixed orifice metering devices on all models to precisely control refrigerant flow
• Large, laminated control wiring and power wiring drawings are affixed to
unit to make troubleshooting easy
• Capable of thru−the−base or thru−the−curb gas line routing
• Single point gas and electrical connections
WARRANTY
• 10 Year limited warranty on aluminized heat exchanger
• 5 Year limited warranty on compressor
• 1 Year limited warranty on parts
TABLE OF CONTENTS
PAGE
MODEL NUMBER NOMENCLATURE . . . . . . . . . . . . . . . . . . . . . 3
FACTORY OPTIONS AND/OR ACCESSORIES . . . . . . . . . . . . 4
AHRI COOLING RATING TABLE . . . . . . . . . . . . . . . . . . . . . . . . . 9
HEAT RATING TABLES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
SOUND PERFORMANCE TABLE . . . . . . . . . . . . . . . . . . . . . . . 10
PHYSICAL DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
CURBS & WEIGHTS DIMENSIONS . . . . . . . . . . . . . . . . . . . . . 18
APPLICATION DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
COOLING TABLES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
STATIC PRESSURE ADDERS . . . . . . . . . . . . . . . . . . . . . . . . . . 31
FAN PERFORMANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
OUTDOOR AIR INTAKE & EXHAUST PERF . . . . . . . . . . . . . 38
ELECTRICAL INFO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
MCA / MOCP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
TYPICAL WIRING DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . 44
SEQUENCE OF OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . 48
GUIDE SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
509 31 350800
MODEL NOMENCLATURE
MODEL SERIES
R
G
S
0
9
1
H
D
A
B
0
A
A
A
Position Number
R = Rooftop
1
2
3
4
5
6
7
8
9
10
11
12
13
14
A = Air Conditioning (Cooling Only)
H = Heat Pump
G = Gas/Electric
S = Standard ASHRAE 90.1−2010 Efficiency
072 = 72,000 = 6 Tons
091 = 90,000 = 7.5 Tons (Single Compressor)
090 = 90,000 = 7.5 Tons (Dual Compressor)
101 = 102,000 = 8.5 Tons (Single Compressor)
102= 102,000 = 8.5 Tons (Dual Compressor)
121 = 102,000 = 10 Tons (Single Compressor)
120 = 120,000 = 10 Tons (Dual Compressor)
150 = 150,000 = 12.5 Tons (Dual Compressor)
H = 208/230−3−60
L = 460−3−60
S = 575−3−60
Type
Efficiency
Nominal Cooling Capacity
Voltage
D = Low Heat
E = Medium Heat
F = High Heat
Heating Capacity (See spec sheet for actual capacity)
A = Standard Motor
C = Medium Static Motor
B = High Static Motor
A = None
B = Economizer w/Bara−relief, OA Temp sensor
Motor Option
Outdoor Air Options / Control (See spec sheet for details)
0A = No Options
Factory Installed Options
A = Aluminum / Copper Cond & Evap Coil
E = Copper/Copper Cond & Alum/Copper Evap
Condenser / Evaporator Coil Configuration
A = Sales Digit
509 31 3508 00
Specifications subject to change without notice.
3
Table 1 – FACTORY INSTALLED OPTIONS AND FIELD INSTALLED ACCESSORIES
CATEGORY
Cabinet
Coil Options
Condenser
Protection
Controls
Economizers
& Outdoor Air
Dampers
Economizer Sensors
& IAQ Devices
Gas Heat
Indoor Motor & Drive
Low Ambient
Control
Roof Curbs
ITEM
Thru−the−base electrical or gas−line connections
Copper/Copper outdoor coils
FACTORY
INSTALLED
OPTION
FIELD
INSTALLED
ACCESSORY
X
X
Condenser coil hail guard (louvered design)
X
Time Guard II compressor delay control circuit
Phase Monitor
Filter status switch1
Fan status switch1
Economizer (for electro−mechanical controlled RTUs)
Motorized 2 position outdoor−air damper
Manual outdoor−air damper
Barometric relief2
Power exhaust
Single dry bulb temperature sensors3
Single enthalpy sensors3
Differential enthalpy sensors3
CO2 sensor (wall, duct, or unit mounted)3
Liquid propane (LP) conversion kit
High altitude conversion kit
Flue Shield
Flue Discharge Deflector
Multiple motor and drive packages
Winter start kit4
Head pressure controller4
Roof curb 14” (356mm)
Roof curb 24” (610mm)
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
NOTES:
1. Use in conjunction with specialized thermostat or controls device.
2. Included with economizer.
3. Sensors used to optimize economizer performance.
4. See application data for assistance.
FACTORY OPTIONS AND/OR ACCESSORIES
Economizer (dry−bulb or enthalpy)
CO2 Sensor
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 based on occupancy.
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.
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.
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.
CO2 sensors are available with the economizer, installed and
tested by the factory.
4
Specifications subject to change without notice.
509 31 3508 00
FACTORY OPTIONS AND/OR ACCESSORIES (CONT.)
Louvered Hail Guards
Winter Start Kit
Sleek, accessory louvered panels protect the condenser coil
from hail damage, foreign objects, and incidental contact.
The accessory winter start kit extends the low ambient limit of
your rooftop to 25F (−9C). The kit bypasses the low pressure
switch, preventing nuisance tripping of the low pressure switch.
Other low ambient precautions may still be prudent.
Barometric Relief
Gravity controlled, barometric relief equalizes building pressure
and ambient air pressures. This can be a cost effective solution
to prevent building pressurization.
Power Exhaust
Superior internal building pressure control. This field−installed
accessory may eliminate the need for costly, external pressure
control fans.
Time Guard II Control Circuit
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 authorized commercial thermostats.
Filter or Fan Status Switches
Use these accessory differential pressure switches to detect a
filter clog or indoor fan motor failure. When used in conjunction
with a compatible unit controller/thermostat, the switches will
activate an alarm to warn the appropriate personnel.
Motorized 2−Position Damper
A 2−position, motorized outdoor air damper is available as an
accessory and 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.
Liquid Propane Heating
Convert your gas heat rooftop from standard natural gas
operation to liquid 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.
Flue Discharge Heat Shield
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
Accessory manual outdoor air dampers are an economical way
to bring in ventilation air.
Some applications need larger horsepower motors, some need
more airflow, and some need both. Regardless of the case, your
unit has a factory installed combination to meet your application.
A wide selection of motors and pulleys (drives) are available,
factory installed, to handle nearly any application.
Head Pressure Controller
Thru−the−Base Connections
The 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 controller will either cycle the outdoor−fan motors
or operate them at reduced speed to maintain the unit operation,
depending on the model.
Thru−the−base connections, available as an accessory, 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.
Manual OA Damper
509 31 3508 00
Specifications subject to change without notice.
5
ACCESSORIES − RGS072−150
FLAT ROOF CURBS
Model Number
CRRFCURB001A01
CRRFCURB003A01
CRRFCURB002A01
CRRFCURB004A01
Description
14” High Roof Curb. Ductwork attaches to the roof curb. Includes
thru−the−bottom capability.
14” High Roof Curb. Ductwork attaches to the roof curb. Includes
thru−the−bottom capability.
24” High Roof Curb. Ductwork attaches to the roof curb. Includes
thru−the−bottom capability.
24” High Roof Curb. Ductwork attaches to the roof curb. Includes
thru−the−bottom capability.
Use With Model Size
Description
Vertical EconoMi$er IV with solid−state controller, gear−driven,
3−position modulating damper, spring return actuator, up to 100%
barometric relief, supply and outdoor air sensors, and CO2 sensor
compatible.
Vertical EconoMi$er IV with solid−state controller, gear−driven,
3−position modulating damper, spring return actuator, up to 100%
barometric relief, supply and outdoor air sensors, and CO2 sensor
compatible.
Horizontal EconoMi$er IV with solid−state controller, gear−driven,
3−position modulating damper, spring return actuator, up to 100%
barometric relief, supply and outdoor air sensors, and CO2 sensor
compatible.
Horizontal EconoMi$er IV with solid−state controller, gear−driven,
3−position modulating damper, spring return actuator, up to 100%
barometric relief, supply and outdoor air sensors, and CO2 sensor
compatible.
Use With Model Size
Description
Vertical Power Exhaust 208/230 volt
Vertical Power Exhaust 460 volt
Vertical Power Exhaust 208/230 volt
Vertical Power Exhaust 460 volt
Horizontal Power Exhaust 208/230 & 575 volt
Horizontal Power Exhaust 460 volt
Use With Model Size
072
072
090 − 150
090 − 150
072 − 150
072 − 150
072
090 − 150
072
090 − 150
ECONOMIZERS
Model Number
DNECOMZR020A02
DNECOMZR021A03
DNECOMZR024A02
DNECOMZR025A02
072
090 − 150
072
090 − 150
POWER EXHAUST
Model Number
DNPWREXH030A01
DNPWREXH021A01
DNPWREXH022A01
DNPWREXH023A01
DNPWREXH028A01
DNPWREXH029A01
MANUAL OUTDOOR AIR DAMPERS
Model Number
DNMANDPR001A03
CRMANDPR001A02
DNMANDPR002A03
CRMANDPR002A02
Description
25% Open Manual Fresh Air Damper
50% Open Manual Fresh Air Damper
25% Open Manual Fresh Air Damper
50% Open Manual Fresh Air Damper
Use With Model Size
072
072
090 − 150
090 − 150
MOTORIZED OUTDOOR AIR DAMPERS
Model Number
CRTWOPOS010A00
CRTWOPOS011A00
6
Description
Motorized 2 position outdoor air damper (25−100% Outdoor Air)
Motorized 2 position outdoor air damper
Specifications subject to change without notice.
Use With Model Size
072
090 − 150
509 31 3508 00
ACCESSORIES − RGS072−150
LOW AMBIENT CONTROLS *
Model Number
Description
Motormaster I Single−Phase Solid−State Variable Speed Motor
Controller enables cooling down to −20° F by varying the speed on the
condenser fan.
MotorMaster I Single−Phase Solid−State Variable Speed Motor
Controller enables cooling down to −20° F by varying the speed on the
condenser fan.
Motormaster II Low Ambient Control − Enables cooling system to
operate down to 0° F by cycling condenser fan on and off. The control
is activated by a temperature sensor. No motor change−out required.
32LT900301 1
32LT900611 1
CPLOWAMB001A00
1171974 2
Motormaster I Compatible Condenser Fan Motor
1171975 2
Motormaster I Compatible Condenser Fan Motor
1171108 2
10 Micro Farad Run Capacitor
Motormaster V Low Ambient Kit. Mechanical cooling operation down
to −20° F (− 29° C)
Motormaster V Low Ambient Kit. Mechanical cooling operation down
to −20° F (− 29° C)
Motormaster V Low Ambient Kit. Mechanical cooling operation down
to −20° F (− 29° C).
CRLOWAMB030A00 3
CRLOWAMB031A00 3
CRLOWAMB032A00 3
Use With Model Size
072 − 121
208/203−3−60
072 − 121
460−3−60, 575−3−60
072 − 121
208/203−3−60, 460−3−60
072 − 121
208/203−3−60
072 − 121
460−3−60, 575−3−60
090−121
208/230−3−60
150
208/230−3−60
150
460−3−60
150
575−3−60
THROUGH−THE−BOTTOM/CURB POWER CONNECTION
Model Number
CRBTMPWR001A01
CRBTMPWR002A01
CRBTMPWR003A01
CRBTMPWR004A01
Description
Thru−the−bottom electrical + thru−−the curb Gas
Thru−the−bottom electrical + thru−−the curb Gas
Thru−the−bottom electrical and Gas (AXB035PKA)
Thru−the−bottom electrical and Gas
Use With Model Size
072
090 − 150
072
090 − 150
WINTER START KIT
Model Number
DNWINSTR001A00
Description
Electronic phase monitor breaks “R” control signal if trouble is detected.
(Allows operation down to 25°F from standard 40°F.)
Use With Model Size
072 − 150
ECONOMIZER SENSORS
Model Number
DNTEMPSN002A00
DNCBDIOX005A00
DNENTDIF004A00
Description
Outdoor or Return Dry Bulb Temperature Sensor used with
Electro−Mechanical control.
CO2 Sensor for use in return airstream. Also includes Aspirator Box
required for Duct Mounting.
Return Air Enthalpy Sensor used with Electro−Mechanical controls, use
with AXB078ENT for differential enthalpy control.
Accusensor II Economizer Differential Enthalpy Control Upgrade
Use With Model Size
ALL Economizers
ALL Economizers
ALL Economizers
AXB078ENT
ALL Economizers
*See usage tables in kit instructions.
1 Requires motor change out.
2 Available from FAST Parts.
3 No motor change is required on these specific models
Field supplied relay also required when using with 120 size heat pumps: Relay Base (1179470), Relay (1179471)
509 31 3508 00
Specifications subject to change without notice.
7
ACCESSORIES − RGS072−150 (cont.)
LP GAS CONVERSION KITS*
Model Number
CRLPELEV001A00
CRLPELEV002A00
CRLPELEV003A00
CRLPELEV004A00
Description
LP and Hi Altitude conversion kit. Contains spuds sizes 31, 32, 33,
35, and 36.
LP and Hi Altitude conversion kit. Contains spuds sizes 37, 38, 39,
44, and 45.
LP and Hi Altitude conversion kit. Contains spuds sizes 46, 47, 48,
49, and 50.
LP and Hi Altitude conversion kit. Contains spuds sizes 51, 52, 53,
54, and 55.
Use With Model Size
072 − 150
072 − 150
072 − 150
072 − 150
* See LP kit instructions and service manual for more details.
HEATING UPGRADE KITS
Model Number
CRFLUEDS001A00
CRFLUEHD001A01
Description
Flue Discharge Deflector
Flue Exhaust Heat Shield
Use With Model Size
072 − 150
072 − 150
CONTROL UPGRADE KITS
Model Number
DNSTATUS001A00
NRTIMEGD001A00
1178184 2
DNPHASE3001A02
Description
Fan/Filter Status Switch
Time Guard II
Remote keyed attenuator / test / reset station
Phase Monitor Control
Use With Model Size
072 − 150
072 − 150
072 − 150
072 − 150
Description
Transformer for conversion from 575v to 208/230v power exhaust
applications.
Use With Model Size
575V TRANSFORMER
Model Number
1171494 2
072 − 150
HAIL GUARDS
Model Number
Description
DNLVHLGD013A00
Louvered Condenser Coil Hail Guard
DNLVHLGD014A00
Louvered Condenser Coil Hail Guard
DNLVHLGD020A00
Louvered Condenser Coil Hail Guard
DNLVHLGD015A00
Louvered Condenser Coil Hail Guard
DNLVHLGD016A00
Louvered Condenser Coil Hail Guard
DNLVHLGD021A00
Louvered Condenser Coil Hail Guard
DNLVHLGD022A00
Louvered Condenser Coil Hail Guard
2 Available from FAST Parts.
8
Specifications subject to change without notice.
Use With Model Size
072
091
090
101 / 102
121
120
150
509 31 3508 00
Table 2 – AHRI COOLING RATING TABLE − Single Stage Cooling
UNIT
RGS
COOLING
STAGES
NOM.
CAPACITY
(TONS)
072
091
101
121
1
1
1
1
6
7.5
8.5
10
NET
COOLING
CAPACITY
(MBH)
TOTAL
POWER (KW)
70.0
88.0
97.0
117.0
6.4
8.0
8.8
10.6
SEER
−
−
−
−
EER
11.0
11.0
11.0
11.0
IEER
11.2
11.2
11.2
11.2
EER
11.00
11.00
11.10
10.80
IEER
11.7
11.7
11.8
11.0
Table 3 – AHRI COOLING RATING TABLE − Two Stage Cooling
UNIT
RGS
090
102
120
150
COOLING
STAGES
2
2
2
2
NOM.
CAPACITY
(TONS)
7.5
8.5
10
12.5
NET
COOLING
CAPACITY
(MBH)
83.0
99.0
114.0
140.0
LEGEND
AHRI
− Air−Conditioning, Heating & Refrigeration Institute
ASHRAE − American Society of Heating, Refrigerating
and Air Conditioning, Inc.
EER
− Energy Efficiency Ratio
IEER
− Integrated Energy Efficiency Ratio
SEER
− Seasonal Energy Efficiency Ratio
IPLV
− Integrated Part Load Value
Use of the AHRI Certified TM Mark indicates
a manufacturer’s participation in the program.
For verification of certification for individual
products, go to www.ahridirectory.org .
TOTAL
POWER (kW)
7.5
9.0
10.3
12.9
SEER
N/A
N/A
N/A
N/A
NOTES:
1. Rated and certified under AHRI Standard 210/240−06 or
340/360−04, as appropriate.
2. Ratings are based on:
Cooling Standard: 80F (27C) db, 67F (19C) wb indoor air
temp and 95F (35C) db outdoor air temp.
IPLV Standard: 80F (27C) db, 67F (19C) wb indoor air
temp and 80F (27C) db outdoor air temp.
IEER Standard: Procedure described in AHRI Standard
340/360.
3. All RGS units comply with ASHRAE 90.1 2001, 2004 Energy
Standard for minimum SEER and EER requirements.
4. RGS units comply with US Energy Policy Act (2005). To
evaluate code compliance requirements, refer to state and local
codes or visit the following website: http://bcap−energy.org .
Table 4 – HEATING RATING TABLE − NATURAL GAS & LIQUID PROPANE
UNIT
RGS
072
090/091
101/102
120/121
150
GAS HEAT
LOW
MED
HIGH
LOW
MED
HIGH
LOW
MED
HIGH
LOW
MED
HIGH
LOW
MED
HIGH
AL & SS HEAT EXCHANGER
INPUT / OUTPUT
INPUT / OUTPUT
STAGE 1 (MBH)
STAGE 2 (MBH)
−
72.0 / 59.0
−
115.0 / 93.0
120 / 96
150.0 / 120.0
−
125.0 / 103.0
120 / 98
180.0 / 148.0
180 / 147
224.0 / 184.0
−
125.0 / 103.0
120 / 98
180.0 / 148.0
180 / 147
224.0 / 184.0
120 / 98
180.0 / 148.0
180 / 147
224.0 / 184.0
200 / 160
250.0 / 205.0
120 / 98
180.0 / 148.0
180 / 147
224.0 / 184.0
200 / 160
250.0 / 205.0
TEMP RISE
(DEG F)
25 − 55
35 − 65
50 − 80
20 − 50
35 − 65
45 − 75
20 − 50
35 − 65
45 − 75
35 − 65
45 − 75
40 − 70
20 − 65
25 − 65
25 − 70
THERMAL
EFFICIENCY
(%)
82%
81%
80%
82%
82%
82%
82%
82%
82%
82%
82%
82%
82%
82%
82%
AFUE
(%)
81%
80%
80%
−
−
−
−
−
−
−
−
−
−
−
−
NOTE:
Heat ratings are for natural gas heat exchangers operated at or below 2000 ft. For information on LP or altitudes above 2000 ft
(610m), see the Application Data section of this book. Accessory LP/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.
509 31 3508 00
Specifications subject to change without notice.
9
Table 5 – SOUND PERFORMANCE TABLE
UNIT
072
091
090
101
102
121
120
150
COOLING
STAGES
1
1
2
1
2
1
2
2
A−WEIGHTED
78
82
82
83
82
82
82
87
63
88.8
90.1
85.8
91.2
88.6
88.6
89.0
87.0
125
81.8
82.6
84.3
86.4
85.0
85.0
83.1
85.2
OUTDOOR SOUND (dB)
250
500
1000
76.9
74.4
73.3
81.0
79.4
77.0
80.5
78.7
76.4
81.9
81.0
78.3
81.6
79.5
77.4
81.6
79.5
77.4
80.5
78.5
75.5
84.6
84.9
82.2
2000
69.8
73.0
72.7
73.9
74.1
74.1
71.6
78.4
4000
66.3
70.4
68.3
71.4
71.0
71.0
69.6
75.3
8000
62.7
66.7
65.1
67.3
66.3
66.3
69.3
72.9
NOTES:
1. Outdoor sound data is measure in accordance with AHRI
standard 270−95.
2. Measurements are expressed in terms of sound power. Do
not compare these values to sound pressure values because
sound pressure depends on specific environmental factors
which normally do not match individual applications. Sound
power values are independent of the environment and therefore
more accurate.
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 are taken in accordance
with AHRI standard 270−95.
LEGEND
dB − Decibel
Use of the AHRI Certified TM Mark indicates
a manufacturer’s participation in the program.
For verification of certification for individual
products, go to www.ahridirectory.org .
Table 6 – MINIMUM − MAXIMUM AIRFLOW RATINGS − NATURAL GAS & LIQUID PROPANE
UNIT
RGS
072
090/091
101/102
120/121
150
10
HEAT
LEVEL
LOW
MED
HIGH
LOW
MED
HIGH
LOW
MED
HIGH
LOW
MED
HIGH
LOW
MED
HIGH
COOLING
Minimum
Maximum
1800
3000
2250
3750
2550
4250
3000
5000
3600
6000
Specifications subject to change without notice.
AL HX HEATING
Minimum
Maximum
990
2190
1330
2460
1390
2220
1900
4750
2100
3900
2270
3780
1900
4750
2100
3900
2270
3780
2100
3900
2270
3780
2710
4750
2100
6830
2620
6800
2650
7410
509 31 3508 00
RGS072
RGS091
RGS090
RGS101
RGS102
1 / 1 / Scroll
14−2
1 / 1 / Scroll
13 − 12
1 / 1 / Scroll
15 − 4
2 / 2 / Scroll
10 − 5 / 10 − 12
630 / 505
54 / 117
630 / 505
54 / 117
2 / 2 / Scroll
8−5/8−2
Fixed Metering Device
630 / 505
54 / 117
630 / 505
54 / 117
630 / 505
54 / 117
Cu / Al
3/8” RTPF
4 / 15
7.3
3/4”
Cu / Al
3/8” RTPF
3 / 15
8.9
3/4”
Cu / Al
3/8” RTPF
3 / 15
8.9
3/4”
Cu / Al
3/8” RTPF
3 / 15
11.1
3/4”
Cu / Al
3/8” RTPF
3 / 15
11.1
3/4”
Standard Static
3 phase
Motor Qty / Drive Type
Max BHP
RPM Range
Motor Frame Size
Fan Qty / Type
Fan Diameter (in)
1 / Belt
2.4
1073−1457
56
1 / Centrifugal
10 x 10
1 / Belt
1.7
489−747
56
1 / Centrifugal
15 x 15
1 / Belt
1.7
518−733
56
1 / Centrifugal
15 x 15
1 / Belt
1.7
518−733
56
1 / Centrifugal
15 x 15
Medium Static
3 phase
Motor Qty / Drive Type
Max BHP
RPM Range
Motor Frame Size
Fan Qty / Type
Fan Diameter (in)
1 / Belt
2.9*
1173−1518
56
1 / Centrifugal
10 x 10
1 / Belt
2.9
733−949
56
1 / Centrifugal
15 x 15
1 / Belt
1.7
489−747
56
1 / Centrifugal
15 x 15
0
1 / Belt
2.9
733−949
56
1 / Centrifugal
15 x 15
1 / Belt
2.4
690−936
56
1 / Centrifugal
15 x 15
1 / Belt
2.4
690−936
56
1 / Centrifugal
15 x 15
High Static
3 phase
Table 7 – PHYSICAL DATA (COOLING) 6 − 8.5 TONS
Motor Qty / Drive Type
Max BHP
RPM Range
Motor Frame Size
Fan Qty / Type
Fan Diameter (in)
1 / Belt
3.7
1474−1788
56
1 / Centrifugal
10 x 10
1 / Belt
4.7
909−1102
145TY
1 / Centrifugal
15 x 15
1 / Belt
4.7
909−1102
145TY
1 / Centrifugal
15 x 15
1 / Belt
3.7
838−1084
56
1 / Centrifugal
15 x 15
1 / Belt
3.7
838−1084
56
1 / Centrifugal
15 x 15
Material
Coil type
Rows / FPI
Total Face Area (ft2)
Cu / Al
3/8” RTPF
2 / 17
21.3
Cu / Al
3/8” RTPF
2 / 17
20.5
Cu / Al
3/8” RTPF
2 / 17
20.5
Cu / Al
3/8” RTPF
2 / 17
21.4
Cu / Al
3/8” RTPF
2 / 17
25.1
Qty / Motor Drive Type
Motor HP / RPM
Fan diameter (in)
1/ Direct
1/4 / 1100
22
2 / direct
1/4 / 1100
22
2 / direct
1/4 / 1100
22
2 / direct
1/4 / 1100
22
2 / direct
1/4 / 1100
22
4 / 16 x 16 x 2
1 / 20 x 24 x 1
4 / 16 x 20 x 2
1 / 20 x 24 x 1
4 / 16 x 20 x 2
1 / 20 x 24 x 1
4 / 20 x 20 x 2
1 / 20 x 24 x 1
4 / 20 x 20 x 2
1 / 20 x 24 x 1
Refrigeration System
# Circuits / # Comp. / Type
Refrig. (R−410A) charge per circuit A/B (lbs−oz)
Metering Device
High−press. Trip / Reset (psig)
Low−press. Trip / Reset (psig)
Evap. Coil
Material
Coil type
Rows / FPI
Total Face Area (ft2)
Condensate Drain Conn. Size
Evap. Fan and Motor
RTPF Cond. Coil
Cond. fan / motor
Filters
RA Filter # / Size (in)
OA inlet screen # / Size (in)
* RTPF − Round Tube Plate Fin Coil Design
509 31 3508 00
Specifications subject to change without notice.
11
RGS121
RGS120
RGS150
1 / 1 / Scroll
20 − 0
2 / 2 / Scroll
11 − 0 / 11 − 6
630 / 505
54 / 117
2 / 2 / Scroll
10 − 5 / 10 − 3
Fixed Metering Device
630 / 505
54 / 117
Cu / Al
3/8” RTPF
4 / 15
11.1
3/4”
Cu / Al
3/8” RTPF
4 / 15
11.1
3/4”
Cu / Al
3/8” RTPF
4 / 15
11.1
3/4”
Standard Static
3 phase
Motor Qty / Drive type
Max BHP
RPM range
motor frame size
Fan Qty / Type
Fan Diameter (in)
1 / Belt
2.4
591−838
56
1 / Centrifugal
15 x 15
1 / Belt
2.4
591−838
56
1 / Centrifugal
15 x 15
1 / Belt
2.9
652−843
56
1 / Centrifugal
15 x 15
Medium Static
3 phase
Motor Qty / Drive type
Max BHP
RPM range
motor frame size
Fan Qty / Type
Fan Diameter (in)
1 / Belt
3.7
838−1084
56
1 / Centrifugal
15 x 15
1 / Belt
3.7
838−1084
56
1 / Centrifugal
15 x 15
1 / Belt
3.7
838−1084
56
1 / Centrifugal
15 x 15
High Static
3 phase
Table 8 – PHYSICAL DATA (COOLING) 10 − 12.5 TONS
Motor Qty / Drive type
Max BHP
RPM range
motor frame size
Fan Qty / Type
Fan Diameter (in)
1 / Belt
4.7
1022−1240
145TY
1 / Centrifugal
15 x 15
1 / Belt
4.7
1022−1240
145TY
1 / Centrifugal
15 x 15
1 / Belt
4.7
1022−1240
145TY
1 / Centrifugal
15 x 15
Material
Coil type
Rows / FPI
total face area (ft2)
Cu / Al
3/8” RTPF
2 / 17
25.1
Cu / Al
3/8” RTPF
2 / 17
25.1
Cu / Al
3/8” RTPF
3 / 17
25.1
Qty / Motor drive type
Motor HP / RPM
Fan diameter (in)
2 / direct
1/4 / 1100
22
2 / direct
1/4 / 1100
22
1 / direct
1 / 1175
30
4 / 20 x 20 x 2
1 / 20 x 24 x 1
4 / 20 x 20 x 2
1 / 20 x 24 x 1
4 / 20 x 20 x 2
1 / 20 x 24 x 1
Refrigeration System
# Circuits / # Comp. / Type
RTPF models R−410a charge A/B (lbs − oz)
Metering device
High−press. Trip / Reset (psig)
Low−press. Trip / Reset (psig)
630 / 505
54 / 117
Evap. Coil
Material
Coil type
Rows / FPI
Total Face Area (ft2)
Condensate drain conn. size
Evap. fan and motor
RTPF Cond. Coil
Cond. fan / motor
Filters
RA Filter # / size (in)
OA inlet screen # / size (in)
12
Specifications subject to change without notice.
509 31 3508 00
Table 9 – PHYSICAL DATA (HEATING) 6 − 12.5 TONS
RGS072
RGS090/091
RGS101/102
RGS120/121
RGS150
# of Gas Valves
Nat. gas supply line press (in. w.g.)/(PSIG)
Propane supply line press (in. w.g.)/(PSIG)
1
4−13/0.18−0.47
11−13/0.40−0.47
1
4−13/0.18−0.47
11−13/0.40−0.47
1
4−13/0.18−0.47
11−13/0.40−0.47
1
4−13/0.18−0.47
11−13/0.40−0.47
1
4−13/0.18−0.47
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
0.14
0.14
Natural Gas, Propane Heat
# of stages / # of burners (total)
Connection size
Rollout switch opens / closes
Temperature rise range (F)
1/2
1/2” NPT
195 / 115
15 − 55
1/3
1/2” NPT
195 / 115
20 − 50
1/3
1/2” NPT
195 / 115
20 − 50
2/4
3/4” NPT
195 / 115
25 − 65
2/4
3/4” NPT
195 / 115
25 − 65
# of stages / # of burners (total)
Connection size
Rollout switch opens / closes
Temperature rise range (F)
1/3
1/2” NPT
195 / 115
25 − 65
2/4
3/4” NPT
195 / 115
35 − 65
2/4
3/4” NPT
195 / 115
30 − 65
2/5
3/4” NPT
195 / 115
30 − 65
2/5
3/4” NPT
195 / 115
25 − 65
Connection size
# of stages / # of burners (total)
Rollout switch opens / closes
Temperature rise range (F)
1 or 2 / 3
1/2” NPT
195 / 115
35 − 80
2/5
3/4” NPT
195 / 115
45 − 75
2/5
3/4” NPT
195 / 115
40 − 75
2/5
3/4” NPT
195 / 115
35 − 70
2/5
3/4” NPT
195 / 115
35 − 70
HIGH
MED
LOW
Gas Connection
509 31 3508 00
Specifications subject to change without notice.
13
BASE UNIT DIMENSIONS − RGS072
Optional Economizer Hood
072
14
Specifications subject to change without notice.
509 31 3508 00
WEIGHT & CLEARANCE DIMENSIONS − RGS072 (cont.)
UNIT
RGS072
Corner
Weight
A
LBS
KG
150
68
BASE UNIT
WEIGHT
LBS
KG
652
296
Corner
Weight
B
LBS
KG
169
76
Corner A
Corner
Weight
C
LBS
KG
176
80
Corner
Weight
D
LBS
KG
157
71
Center of Gravity
In [mm]
X
Y
Z
39 [991] 23 [584] 20-1/8 [511]
Corner B
Y
Z
Corner D
X
Corner C
UNIT CLEARANCES
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
A
B
C
D
CONDITION
Unit disconnect is mounted on panel
No disconnect, convenience outlet option
Recommended service clearance
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
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)
Check for adjacent units or building fresh air intakes within 10−ft of this unit’s flue outlet
C
D
B
509 31 3508 00
A
Specifications subject to change without notice.
15
ROOF CURB DETAILS − RGS072
RoofCurb Accessory
CRRFCURB001A01
CRRFCURB002A01
Connector Pkg. Acc.
CRBTMPWR001A01
CRBTMPWR003A01
A
1' 2 “ [356]
2' 0” [610]
B
1' 9-11/16”
[551]
Unit Size
RGS072
C
1' 4”
[406]
NOTES:
1. Roofcurb accessory is shipped disassembled.
2. Insulated panels, 1” thick polyurethane foam, 1−3/4# density.
3. Dimensions in. [ ] in millimeters.
4. Roofcurb 16ga steel.
5. Attach ductwork to curb (Flanges of duct rest on curb)
6. Service clearance 4’ on each side.
7.
Direction of airflow.
8. Connector pkg. CRBTMPWR001A01 is for thru−the−curb connections. Pkg.
CRBTMPWR003A01 is for thru−the−bottom connections.
D Alt. Drain Hole
1l-3/4”
[44.5]
Gas
[19] NPT
1/2” [12.7] NPT
3/ ”
4
Power
3/ ”
4
[19] NPT
Control
1/ ”
2
Accessory Power
[12.7] NPT
1/ ”
2
[12.7] NPT
0’−0 1/4”
[6.3]
A
5’−7 1/8”
[1705]
3’−0 15/16”
[938]
16
Specifications subject to change without notice.
509 31 3508 00
BASE UNIT DIMENSIONS − RGS090−121
Optional Economizer Hood
091
101
121
090
102
120
509 31 3508 00
Specifications subject to change without notice.
17
WEIGHT & CLEARANCE DIMENSIONS − RGS090−121 (cont.)
BASE UNIT
WEIGHT
LBS
KG
810
367
910
413
965
438
860
390
930
422
940
426
UNIT
RGS091
RGS101
RGS121
RGS090
RGS102
RGS120
Corner
Weight
A
LBS
KG
171
78
193
88
207
94
153
69.3
228
103.5
196
88.9
Corner
Weight
B
LBS
KG
164
74
181
82
204
93
147
66.6
187
85
190
86.2
Corner A
Corner
Weight
C
LBS
KG
233
106
260
118
275
125
273
124
232
105.3
271
123
Corner
Weight
D
LBS
KG
242
110
276
125
279
127
284
129
283
128.5
279
127
Center of Gravity
In [mm]
X
Y
Z
42 [1064] 34 [860]
20 [514]
41 [1051] 23 [581]
23 [581]
42 [1076] 24 [613]
24 [613]
43 [1088] 37 [954]
20 [512]
40 [1010] 33 [835]
19 [473]
42 [1067] 34 [862]
20 [513]
Corner B
Y
Z
Corner C
Corner D
X
UNIT CLEARANCES
LOC
A
B
C
D
DIMENSION
48” (1219 mm)
36” (914 mm)
18” (457 mm)
18” (457 mm)
12” (305 mm)
36” (914 mm)
12” (305 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
If dimension−B is 12”
No disconnect, convenience outlet option
Recommended service clearance (use electric screwdriver)
Minimum clearance (use manual ratchet screwdriver)
Unit has economizer
If dimension−A is 36”
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)
Check for adjacent units or building fresh air intakes within 10−ft of this unit’s flue outlet
C
D
B
18
A
Specifications subject to change without notice.
509 31 3508 00
ROOF CURB DETAILS − RGS090 − 150
RoofCurb Accessory
CRRFCURB003A01
CRRFCURB004A01
A
1' 2 “ [356]
2' 0” [610]
Connector Pkg. Acc.
CRBTMPWR002A01
CRBTMPWR004A01
B
2' 8V-7/16”
[827]
NOTES:
1. Roofcurb accessory is shipped disassembled.
2. Insulated panels, 1” thick polyurethane foam, 1−3/4# density.
3. Dimensions in. [ ] in millimeters.
4. Roofcurb 16ga steel.
5. Attach ductwork to curb (Flanges of duct rest on curb)
6. Service clearance 4’ on each side.
7.
Direction of airflow.
8. Connector pkg. CRBTMPWR002A01 is for thru−the−curb connections. Pkg.
CRBTMPWR004A01 is for thru−the−bottom connections.
Unit Size
RGS090-150
C
1' 10l-15/16”
[583]
D Alt. Drain Hole
1l-3/4”
[44.5]
Gas
3/ ”
4
[19] NPT
Power
1l-1/4”
[31.7] NPT
Control
[12.7]
NPT
1/ ”
2
Accessory Power
1/ ”
2
[12.7] NPT
0’−3 516”
[84.0]
A
6’−6”
[84.0]
4’−1 3/4”
[1264]
509 31 3508 00
Specifications subject to change without notice.
19
BASE UNIT DIMENSIONS − RGS150
Optional Economizer Hood
150
20
Specifications subject to change without notice.
509 31 3508 00
APPLICATION DATA
Min operating ambient temp (cooling):
In mechanical cooling mode, your rooftop can safely operate
down to an outdoor ambient temperature of 25F (−4C), with
an accessory winter start kit; 40F (4C) standard min operating
temperature. It is possible to provide cooling at lower outdoor
ambient temperatures by using less outside air, economizers,
and/or accessory low ambient kits.
Max operating ambient temp (cooling):
The maximum operating ambient temperature for cooling mode
is 115F (46C). While cooling operation above 115F (46C)
may be possible, it could cause either a reduction in
performance, reliability, or a protective action by the unit’s
internal safety devices.
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:
Aluminized
50F (10C) continuous
Stainless Steel
40F (4C) continuous
45F (7C) intermittent
35F (2C) 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 representative for
assistance.
Min and max airflow (heating and cooling):
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 6
and the maximum value is the LOWER of the cooling and
heating minimum values published in Table 6.
Heating−to−cooling changeover:
Your unit will automatically change from heating to cooling mode
when using a thermostat with an auto−change−over feature.
range without either nuisance tripping or premature motor
failure.
Liquid propane heating:
Liquid propane (LP) has different physical qualities than natural
gas. As a result, LP requires different fuel to air mixture. To
optimize the fuel/air mixture for LP, different burner orifices in an
easy to install accessory kits are available from your dealer. To
select the correct burner orifices or determine the heat capacity
for an LP application, use either the selection software, or the
unit’s service manual.
High altitude heating:
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
(610m) 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.
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 (610m).
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.
Sizing a rooftop
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 partload performance and humidity control.
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 short cycling ( quick on−off cycles ) which
results in poor humidity control, reduced efficiency, higher utility
bills, larger indoor temperature swings, excessive noise, and
increased wear and tear on the air conditioner.
All units are draw−though in cooling mode and blow−through in
heating mode.
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 representative for assistance.
Outdoor air application strategies:
Low ambient applications
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 sales representative for assistance.
The optional 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.
Airflow:
Motor limits, break horsepower (BHP):
Due to the internal unit design, air path, and specially designed
motors, the full horsepower (maximum continuous BHP) band,
as listed in Table 7 and 8, can be used with the utmost
confidence. There is no need for extra safety factors, the motors
are designed and rigorously tested to use the entire, listed BHP
509 31 3508 00
In low ambient applications where outside air might not be
desired (such as contaminated or excessively humid outdoor
environments), your rooftop can operate to ambient
temperatures down to −20F (−29C) using the recommended
accessory Motormaster low ambient controller.
Specifications subject to change without notice.
21
SELECTION PROCEDURE (WITH RGS072 EXAMPLE)1
I.
II.
III.
IV.
Determine cooling and heating loads.
Given:
Mixed air drybulb
80F (27C)
Mixed air wetbulb
67F (19C)
Ambient drybulb
95F (35C)
72.0 MBH
TCLoad
SHCLoad
54.0 MBH
Vertical supply air
2100 CFM
Heating load
85.0 MBH
External static pressure
0.67 in.wg
Electrical characteristics
230−3−60
Make an initial guess at cooling tons.
Refrig. tons = TCLoad / 12 MBH per ton
Refrig. tons = 72.0 / 12 = 6.0 tons
In this case, start by looking at the RGS072.
Look up the rooftop’s TC and SHC.
Table 10 shows that, at the application’s supply air
CFM, mixed air and ambient temperatures, the
RGS072 supplies:
TC = 73.7 MBH
SHC = 54.3 MBH.
Calculate the building latent heat load.
LHCLoad = TCLoad − SHCLoad
LHCLoad = 72.0 MBH − 54.0 MBH = 18.0 MBH
V.
Calculate RTU latent heat capacity.
LHC = TC − SHC
LHC = 73.7 MBH − 54.3 MBH = 19.4 MBH
VI.
Compare RTU capacities to loads. 2,3
Compare the rooftop’s SHC and LHC to the
building’s sensible and latent heat loads.
LEGEND
TC
—
SHC
—
LHC
—
RPM
—
RTU
—
BHP
—
MCA
—
MOCP —
FLA
—
RLA
—
22
Total cooling capacity
Sensible heat capacity
Latent heat capacity
Revolutions per minute
Rooftop unit
Break horsepower
Min. circuit ampacity
Max. Over−current protection
Full load amps
Rated load amps
VII. Select factory options (FIOP)
Local code requires an economizer for any unit with
TC less than 65.0 MBH.
VIII. Calculate the total static pressure.
External static pressure
0.67 in. wg
Sum of FIOP / Accessory static
+0.13 in. wg
Total Static Pressure
0.80 in. wg
IX.
Look up the indoor fan RPM & BHP.
Table 19 shows, at 2100 CFM & ESP= 0.8,
RPM = 1358 & BHP = 1.52
X.
Convert BHP (Step VIII) into fan motor heat.
Fan motor heat = 2.546* BHP/Motor Eff.4
Fan motor heat = 4.9 MBH
XI.
Calculate RTU heating capacity.
Building heating load
Fan motor heat
85.0 MBH
−4.9 MBH
Required heating capacity
80.1 MBH
XII. Select a gas heater.
Table 4 shows the heating capacities of the
RGS072 = 93.0 MBH. Select the RGS072
XIII. Determine electrical requirements.
Table 38 shows the MCA and MOCP of a RGS072
(without convenience outlet) as:
MCA = 30.9 amps & MOCP = 45.0 amps
Min. disconnect size: FLA = 30 & LRA = 48.
NOTES:
1. Selection software saves time by performing many of the
steps above. Contact your sales representative for assistance.
2. Selecting a unit with a SHC slightly lower than the SHCLoad is
often better than oversizing. Slightly lower SHC’s will help
control indoor humidity, and prevent temperature swings.
3. Indoor fan motor efficiency is available in Tables 30−37. Use
the decimal form in the equation, eg. 80% = .8.
Specifications subject to change without notice.
509 31 3508 00
Table 10 – COOLING CAPACITIES 6 TONS
RGS072
EAT (wb)
1800 Cfm
58
62
67
72
76
EAT (wb)
2100 Cfm
58
62
67
72
76
EAT (wb)
2400 Cfm
58
62
67
72
76
EAT (wb)
2700 Cfm
58
62
67
72
76
EAT (wb)
3000 Cfm
58
62
67
72
76
LEGEND:
−
−
Cfm
−
EAT(db) −
EAT(wb) −
SHC
−
TC
−
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
75
64.9
56.6
68.7
51.7
75.6
42.8
82.6
33.5
−
68.9
60.1
70.9
55.6
77.8
45.4
84.5
34.5
−
72.0
62.8
72.8
59.1
79.4
47.7
86.0
35.3
−
60.3
46.4
65.4
41.0
72.7
33.8
79.7
25.8
−
64.9
51.1
68.7
45.5
75.6
36.6
82.6
27.2
−
85
EAT (db)
80
64.9
64.9
68.7
61.0
75.6
52.2
82.6
42.8
87.5
35.0
68.9
68.9
70.9
66.3
77.8
56.1
84.5
45.2
89.2
36.3
72.0
72.0
72.8
71.0
79.4
59.8
86.0
47.2
90.3
37.3
60.3
60.3
65.4
55.1
72.7
48.0
79.7
40.2
85.1
33.5
64.9
64.9
68.7
61.0
75.6
52.2
82.6
42.8
87.5
35.0
85
73.3
73.3
70.3
70.3
75.6
61.5
82.6
52.2
87.5
44.9
77.7
77.7
76.9
76.9
77.8
66.8
84.5
55.9
89.2
47.8
81.2
81.2
82.8
82.8
79.4
71.8
86.0
59.2
90.3
49.8
74.1
74.1
69.3
69.3
72.7
62.2
79.7
54.6
85.1
48.4
78.8
78.8
76.5
76.5
75.6
67.7
82.6
58.5
87.5
51.5
75
62.1
54.1
64.9
49.9
71.7
41.2
78.5
31.9
−
65.9
57.4
67.1
53.8
73.7
43.7
80.3
32.9
−
68.7
60.0
68.9
57.2
75.2
46.0
81.6
33.7
−
71.1
62.0
71.2
59.0
76.3
48.2
82.5
34.5
−
73.1
63.8
73.2
60.7
77.2
50.2
83.3
35.1
−
AMBIENT TEMPERATURE
95
105
EAT (db)
EAT (db)
80
85
75
80
62.1
70.0
58.9
58.9
62.1
70.0
51.4
58.9
64.9
68.5
60.8
60.8
59.2
68.5
47.9
57.2
71.7
71.7
67.4
67.4
50.5
59.8
39.3
48.6
78.5
78.5
73.7
73.7
41.3
50.6
30.0
39.3
83.3
83.3
77.7
−
33.5
43.4
31.6
65.9
74.3
62.5
62.5
65.9
74.3
54.5
62.5
67.1
75.0
63.0
63.0
64.4
75.0
51.6
62.1
73.7
73.7
69.2
69.2
54.4
65.2
41.8
52.5
80.3
80.3
75.1
75.1
43.5
54.2
30.9
41.4
84.7
84.7
78.8
−
34.7
46.0
32.6
68.7
77.5
65.2
65.2
68.7
77.5
56.9
65.2
68.9
80.7
65.2
65.2
68.9
80.7
54.1
65.2
75.2
75.2
70.5
70.5
58.1
70.2
44.0
56.0
81.6
81.6
76.1
76.1
45.6
57.5
31.7
43.3
85.7
85.7
79.6
−
35.6
48.0
33.5
71.1
80.2
67.4
67.4
71.1
80.2
58.8
67.4
71.2
83.3
67.5
67.5
71.2
83.3
55.9
67.5
76.3
76.3
71.5
71.5
61.6
74.9
46.1
59.3
82.5
82.5
76.9
76.9
47.5
60.5
32.3
45.0
86.4
86.4
80.2
−
36.5
49.9
34.3
73.1
82.5
69.2
69.2
73.1
82.5
60.3
69.2
73.2
85.7
69.2
69.2
73.2
85.7
57.4
69.2
77.2
79.4
72.2
72.2
64.8
79.4
48.0
62.4
83.3
83.3
77.5
77.5
49.2
63.3
32.9
46.6
86.9
86.9
80.6
−
37.3
51.6
35.0
85
66.4
66.4
66.4
66.4
67.4
58.0
73.7
48.6
77.7
41.5
70.5
70.5
72.5
72.5
69.2
63.2
75.1
52.0
78.8
43.7
73.5
73.5
76.4
76.4
70.5
68.1
76.1
55.0
79.6
45.6
76.0
76.0
79.0
79.0
72.6
72.6
76.9
57.7
80.2
47.3
78.0
78.0
81.0
81.0
76.8
76.8
77.5
60.3
80.6
48.9
75
55.6
48.5
56.4
45.7
62.5
37.2
67.8
27.8
−
58.7
51.2
58.7
48.7
64.0
39.6
68.8
28.5
−
61.1
53.3
61.2
50.7
65.1
41.6
69.6
29.1
−
63.0
55.0
63.1
52.3
65.8
43.5
70.1
29.7
−
64.5
56.2
64.5
53.5
66.3
45.1
70.5
30.2
−
115
EAT (db)
80
55.6
55.6
56.4
54.9
62.5
46.5
67.8
36.9
70.9
29.3
58.7
58.7
58.7
58.7
64.0
50.2
68.8
38.7
71.6
30.1
61.1
61.1
61.2
61.2
65.1
53.5
69.6
40.3
72.1
30.8
63.0
63.0
63.1
63.1
65.8
56.5
70.1
41.7
72.5
31.5
64.5
64.5
64.5
64.5
66.3
59.1
70.5
43.0
72.8
32.1
85
62.7
62.7
64.0
64.0
62.5
55.8
67.8
45.9
70.9
39.1
66.2
66.2
68.7
68.7
64.0
60.7
68.8
48.9
71.6
40.9
68.9
68.9
71.6
71.6
65.3
65.3
69.6
51.4
72.1
42.5
71.1
71.1
73.8
73.8
69.4
69.4
70.1
53.8
72.5
44.0
72.7
72.7
75.5
75.5
73.0
73.0
70.5
55.9
72.8
45.3
Do not operate in this region
Cubic feet per minute (supply air)
Entering air temperature (dry bulb)
Entering air temperature (wet bulb)
Sensible heat capacity
Total cooling capacity
509 31 3508 00
Specifications subject to change without notice.
23
Table 11 – COOLING CAPACITIES 7.5 TONS − Single Stage Cooling
RGS091
62
EAT (wb)
2250 Cfm
58
67
72
76
62
EAT (wb)
2625 Cfm
58
67
72
76
62
EAT (wb)
3000 Cfm
58
67
72
76
62
EAT (wb)
3375 Cfm
58
67
72
76
62
EAT (wb)
3750 Cfm
58
67
72
76
LEGEND:
−
−
Cfm
−
EAT(db) −
EAT(wb) −
SHC
−
TC
−
24
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
75
81.2
70.5
86.9
63.6
95.2
52.8
103.5
41.5
−
85.9
74.6
89.6
68.1
97.9
55.7
106.0
42.7
−
89.6
77.9
91.8
72.2
99.9
58.3
107.9
43.7
−
92.7
80.5
93.7
75.8
101.5
60.8
109.4
44.6
−
95.3
82.7
95.5
78.7
102.8
63.1
110.6
45.5
−
85
EAT (db)
80
81.2
81.2
86.9
74.9
95.2
64.2
103.5
53.1
109.6
43.7
85.9
85.9
89.6
81.1
97.9
68.7
106.0
55.8
111.8
45.3
89.6
89.6
91.8
86.7
99.9
72.9
107.9
58.3
113.8
46.7
92.7
92.7
93.7
91.6
101.5
76.9
109.4
60.5
115.1
47.8
95.3
95.3
95.5
95.5
102.8
80.6
110.6
62.7
116.1
48.9
85
91.8
91.8
86.9
86.2
95.2
75.6
103.5
64.6
109.6
56.0
97.2
97.2
94.1
94.1
97.9
81.7
106.0
68.9
111.8
59.8
101.4
101.4
101.1
101.1
99.9
87.5
107.9
72.8
113.8
62.5
104.9
104.9
107.3
107.3
101.5
93.0
109.4
76.4
115.1
64.9
107.8
107.8
112.2
112.2
102.8
98.2
110.6
79.9
116.1
67.0
75
77.5
67.3
82.3
61.4
90.7
50.9
98.9
39.7
−
82.2
71.4
85.1
65.9
93.2
53.7
101.3
40.9
−
85.9
74.6
87.2
69.9
95.2
56.4
103.0
41.9
−
88.8
77.1
89.1
73.5
96.7
58.8
104.3
42.8
−
91.3
79.3
91.3
75.3
97.9
61.2
105.4
43.5
−
AMBIENT TEMPERATURE
95
105
EAT (db)
EAT (db)
80
85
75
80
77.5
87.7
73.6
73.6
77.5
87.7
63.9
73.6
82.3
84.0
77.2
77.2
72.7
84.0
58.9
70.2
90.7
90.7
85.7
85.7
62.2
73.6
48.8
60.1
98.9
98.9
93.8
93.8
51.2
62.7
37.7
49.2
104.8
104.8
99.1
−
42.0
54.3
40.0
82.2
93.1
78.1
78.1
82.2
93.1
67.9
78.1
85.1
91.7
80.1
80.1
78.8
91.7
63.4
76.3
93.2
93.2
88.1
88.1
66.7
79.8
51.6
64.6
101.3
101.3
95.9
95.9
53.9
67.0
38.8
51.8
106.9
106.9
100.7
−
43.6
58.0
41.4
85.9
97.2
81.7
81.7
85.9
97.2
71.0
81.7
87.2
98.6
82.3
82.3
84.3
98.6
67.2
81.3
95.2
95.2
89.9
89.9
71.0
85.5
54.2
68.8
103.0
103.0
97.3
97.3
56.4
70.9
39.7
54.1
108.4
108.4
102.0
−
44.8
60.4
42.6
88.8
100.5
84.6
84.6
88.8
100.5
73.4
84.6
89.1
104.7
84.6
84.6
89.1
104.7
69.8
84.6
96.7
96.7
91.3
91.3
74.9
91.0
56.7
72.8
104.3
104.3
98.4
98.4
58.6
74.4
40.5
56.2
109.5
109.5
102.8
−
45.9
62.7
43.5
91.3
103.3
86.9
86.9
91.3
103.3
75.5
86.9
91.3
107.4
87.0
87.0
91.3
107.4
71.7
87.0
97.9
97.9
92.3
92.3
78.7
96.3
59.0
76.5
105.4
105.4
99.2
99.2
60.7
77.8
41.3
58.1
110.3
110.3
103.5
−
46.8
64.8
44.4
85
83.3
83.3
81.5
81.5
85.7
71.5
93.8
60.6
99.1
52.4
88.4
88.4
89.1
89.1
88.1
77.6
95.9
64.7
100.7
55.6
92.5
92.5
95.5
95.5
89.9
83.4
97.3
68.4
102.0
57.9
95.7
95.7
99.5
99.5
91.3
88.9
98.4
71.8
102.8
60.1
98.3
98.3
102.2
102.2
94.0
94.0
99.2
75.0
103.5
62.0
75
69.5
60.4
71.9
56.3
79.9
46.3
87.3
35.3
−
73.9
64.1
74.6
60.6
82.0
49.0
89.0
36.2
−
77.0
66.9
77.1
63.5
83.6
51.6
90.1
37.0
−
79.6
69.1
79.6
65.6
84.8
53.9
90.9
37.7
−
81.7
70.9
81.7
67.4
85.7
56.0
91.5
38.3
−
115
EA (db)
80
69.5
69.5
71.9
67.6
79.9
57.6
87.3
46.6
91.6
37.4
73.9
73.9
74.6
73.3
82.0
62.0
89.0
48.9
92.7
38.7
77.0
77.0
77.1
77.1
83.6
66.1
90.1
51.0
93.4
39.6
79.6
79.6
79.6
79.6
84.8
69.8
90.9
52.8
94.0
40.4
81.7
81.7
81.7
81.7
85.7
73.2
91.5
54.5
94.5
41.1
85
78.7
78.7
78.8
78.8
79.9
68.9
87.3
57.8
91.6
49.8
83.6
83.6
86.0
86.0
82.0
74.9
89.0
61.7
92.7
52.6
87.1
87.1
90.6
90.6
83.6
80.5
90.1
65.0
93.4
54.7
90.0
90.0
93.6
93.6
85.7
85.7
90.9
68.0
94.0
56.5
92.4
92.4
96.0
96.0
90.5
90.5
91.5
70.7
94.5
58.1
Do not operate in this region
Cubic feet per minute (supply air)
Entering air temperature (dry bulb)
Entering air temperature (wet bulb)
Sensible heat capacity
Total cooling capacity
Specifications subject to change without notice.
509 31 3508 00
Table 12 – COOLING CAPACITIES 7.5 TONS − Two Stage Cooling
RGS090
58
EAT (wb)
2250 Cfm
62
67
72
76
58
EAT (wb)
2625 Cfm
62
67
72
76
58
EAT (wb)
3000 Cfm
62
67
72
76
58
EAT (wb)
3375 Cfm
62
67
72
76
58
EAT (wb)
3750 Cfm
62
67
72
76
LEGEND:
Cfm
EAT(db)
EAT(wb)
SHC
TC
-
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
75
77.4
66.9
82.2
60.8
90.1
50.2
98.0
39.1
−
−
82.1
71.0
84.9
65.4
92.5
53.0
100.4
40.2
−
−
85.7
74.1
86.9
69.3
94.3
55.6
102.2
41.2
−
−
88.5
76.5
88.9
72.3
95.8
58.0
103.6
42.0
−
−
90.8
78.5
90.9
74.5
97.0
60.3
104.7
42.9
−
−
85
EAT (db)
80
77.4
77.4
82.2
72.4
90.1
61.8
98.0
50.7
104.3
41.7
82.1
82.1
84.9
78.6
92.5
66.3
100.4
53.5
106.5
43.3
85.7
85.7
86.9
84.0
94.3
70.5
102.2
56.0
108.1
44.5
88.5
88.5
88.9
88.1
95.8
74.4
103.6
58.3
109.2
45.6
90.8
90.8
90.9
90.9
97.0
78.2
104.7
60.5
110.2
46.7
AMBIENT TEMPERATURE
95
105
EAT (db)
EAT (db)
75
80
85
75
80
85
73.8
73.8
83.8
70.1
70.1
79.5
63.9
73.8
83.8
60.6
70.1
79.5
77.5
77.5
81.7
72.6
72.6
79.2
58.6
70.1
81.7
56.3
67.7
79.2
86.0
86.0
86.0
81.4
81.4
81.4
48.5
60.1
71.6
46.5
58.1
69.7
94.0
94.0
94.0
89.5
89.5
89.5
37.5
49.2
60.9
35.8
47.5
59.2
−
100.4
100.4
−
95.9
95.9
−
40.3
52.7
−
38.7
51.0
78.4
78.4
89.0
74.4
74.4
84.4
67.8
78.4
89.0
64.3
74.4
84.4
80.4
80.4
89.5
75.4
75.4
86.7
63.2
76.3
89.5
60.6
73.7
86.7
88.3
88.3
88.3
83.6
83.6
83.6
51.3
64.6
78.0
49.4
62.8
76.1
96.4
96.4
96.4
91.7
91.7
91.7
38.7
52.0
65.3
36.9
50.3
63.7
−
102.6
102.6
−
98.0
98.0
−
41.8
55.9
−
40.2
54.1
82.2
82.2
93.3
78.0
78.0
88.6
71.1
82.2
93.3
67.5
78.0
88.6
82.8
82.8
96.4
78.2
78.2
92.3
67.2
81.8
96.4
64.1
78.2
92.3
90.1
90.1
90.1
85.2
85.2
85.2
54.0
68.9
83.9
52.1
67.1
82.2
98.1
98.1
98.1
93.3
93.3
93.3
39.7
54.6
69.5
38.0
53.0
68.0
−
104.2
104.2
−
99.5
99.5
−
43.2
58.7
−
41.6
57.0
85.0
85.0
96.4
81.0
81.0
92
73.5
85.0
96.4
70.1
81.0
92
85.1
85.1
100.4
81.1
81.1
95.7
69.7
85.1
100.4
66.5
81.1
95.7
91.5
91.5
91.5
86.6
86.6
87.9
56.4
73.0
89.6
54.6
71.3
87.9
99.4
99.4
99.4
94.6
94.6
94.6
40.6
57.0
73.4
38.9
55.5
72.0
−
105.4
105.4
−
100.7
100.7
−
44.4
61.3
−
42.8
59.7
87.3
87.3
99.1
83.3
83.3
94.5
75.5
87.3
99.1
72.0
83.3
94.5
87.4
87.4
103.1
83.3
83.3
98.4
71.6
87.4
103.1
68.3
83.3
98.4
92.6
92.6
95.1
87.6
87.6
93.4
58.8
76.9
95.1
56.9
75.2
93.4
100.5
100.5
100.5
95.6
95.6
95.6
41.4
59.3
77.1
39.8
57.8
75.9
−
106.2
106.2
−
101.6
101.6
−
45.4
63.6
−
44.0
62.3
85
87.8
87.8
83.9
83.9
90.1
73.3
98.0
62.4
104.3
54.0
93.2
93.2
91.8
91.8
92.5
79.5
100.4
66.7
106.5
57.6
97.3
97.3
98.7
98.7
94.3
85.4
102.2
70.7
108.1
60.2
100.4
100.4
103.9
103.9
95.8
90.9
103.6
74.5
109.2
62.6
103.0
103.0
107.2
107.2
97.0
96.2
104.7
78.1
110.2
64.8
75
66.0
57.1
67.3
53.6
75.9
44.2
84.3
33.8
−
−
70.0
60.6
70.2
57.6
78.3
47.2
86.4
35.0
−
−
73.5
63.6
73.6
60.3
79.8
49.9
87.9
36.0
−
−
76.5
66.1
76.5
62.7
81.1
52.4
89.1
37.0
−
−
78.8
68.2
78.9
64.7
82.1
54.8
90.1
37.9
−
−
115
EA (db)
80
66.0
66.0
67.3
65.0
75.9
55.8
84.3
45.5
90.7
36.8
70.0
70.0
70.2
70.2
78.3
60.6
86.4
48.4
92.7
38.4
73.5
73.5
73.6
73.6
79.8
65.0
87.9
51.1
94.2
39.8
76.5
76.5
76.5
76.5
81.1
69.1
89.1
53.7
95.3
41.0
78.8
78.8
78.9
78.9
82.1
73.0
90.1
56.1
96.1
42.2
85
74.9
74.9
76.4
76.4
75.9
67.4
84.3
57.2
90.7
49.0
79.5
79.5
82.9
82.9
78.3
73.9
86.4
61.8
92.7
52.2
83.4
83.4
86.9
86.9
80.1
80.1
87.9
66.2
94.2
55.2
86.8
86.8
90.3
90.3
85.8
85.8
89.1
70.3
95.3
58.0
89.4
89.4
93.1
93.1
91.2
91.2
90.1
74.3
96.1
60.6
Do not operate in this region
Cubic feet per minute (supply air)
Entering air temperature (dry bulb)
Entering air temperature (wet bulb)
Sensible heat capacity
Total capacity
509 31 3508 00
Specifications subject to change without notice.
25
Table 13 – COOLING CAPACITIES
RGS101
EAT (wb)
2550 Cfm
58
62
67
72
76
EAT (wb)
2975 Cfm
58
62
67
72
76
EAT (wb)
3400 Cfm
58
62
67
72
76
EAT (wb)
3825 Cfm
58
62
67
72
76
EAT (wb)
4250 Cfm
58
62
67
72
76
LEGEND:
−
−
Cfm
−
EAT(db) −
EAT(wb) −
SHC
−
TC
−
26
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
75
88.1
76.4
93.9
69.4
103.8
57.8
113.1
45.2
−
93.6
81.1
97.5
74.7
106.7
61.0
115.8
46.5
−
98.1
85.0
100.0
79.3
109.0
63.9
117.9
47.6
−
101.6
88.0
101.9
83.7
110.7
66.7
119.4
48.5
−
104.4
90.4
104.4
85.8
112.1
69.2
120.7
49.4
−
85
EAT (db)
80
88.1
88.1
93.9
82.3
103.8
70.7
113.1
58.3
119.9
47.9
93.6
93.6
97.5
89.5
106.7
75.8
115.8
61.3
122.4
49.8
98.1
98.1
100.0
95.8
109.0
80.5
117.9
64.1
124.2
51.2
101.6
101.6
101.9
101.8
110.7
85.0
119.4
66.6
125.5
52.4
104.4
104.4
104.4
104.4
112.1
89.2
120.7
68.9
126.6
53.5
85
99.9
99.9
95.2
95.2
103.8
83.6
113.1
71.3
119.9
61.9
106.1
106.1
104.3
104.3
106.7
90.6
115.8
76.2
122.4
66.1
111.3
111.3
112.3
112.3
109.0
97.2
117.9
80.6
124.2
69.0
115.1
115.1
120.0
120.0
110.7
103.4
119.4
84.6
125.5
71.5
118.3
118.3
123.0
123.0
112.1
109.2
120.7
88.4
126.6
73.9
75
84.1
72.8
88.6
66.8
98.7
55.6
108.0
43.2
−
89.3
77.4
92.0
72.0
101.5
58.8
110.6
44.5
−
93.7
81.2
94.9
76.3
103.6
61.8
112.5
45.6
−
97.2
84.2
97.3
79.9
105.3
64.6
114.0
46.6
−
99.9
86.6
99.9
82.1
106.6
67.2
115.1
47.4
−
8.5 TONS − Single Stage Cooling
AMBIENT TEMPERATURE
95
105
EAT (db)
EAT (db)
80
85
75
80
84.1
95.3
79.6
79.6
84.1
95.3
69.0
79.6
88.6
92.6
82.8
82.8
79.7
92.6
64.1
76.9
98.7
98.7
93.0
93.0
68.5
81.4
53.1
66.1
108.0
108.0
102.4
102.4
56.3
69.3
41.1
54.1
114.7
114.7
109.0
−
46.0
60.1
44.1
89.3
101.2
84.6
84.6
89.3
101.2
73.3
84.6
92.0
101.4
86.1
86.1
86.7
101.4
69.1
83.7
101.5
101.5
95.7
95.7
73.6
88.5
56.4
71.3
110.6
110.6
104.9
104.9
59.4
74.2
42.3
57.2
117.0
117.0
111.1
−
47.8
63.9
45.7
93.7
106.2
88.9
88.9
93.7
106.2
77.0
88.9
94.9
108.6
89.1
89.1
92.5
108.6
73.2
89.1
103.6
103.6
97.6
97.6
78.5
95.2
59.4
76.1
112.5
112.5
106.6
106.6
62.1
78.7
43.4
60.0
118.6
118.6
112.5
−
49.2
66.7
47.0
97.2
110.1
92.3
92.3
97.2
110.1
80.0
92.3
97.3
114.6
92.4
92.4
97.3
114.6
75.9
92.4
105.3
105.3
99.2
99.2
83.0
101.5
62.2
80.8
114.0
114.0
108.0
108.0
64.7
82.7
44.4
62.6
119.8
119.8
113.6
−
50.4
69.3
48.2
99.9
113.2
95.0
95.0
99.9
113.2
82.3
95.0
99.9
117.8
95.0
95.0
99.9
117.8
78.1
95.0
106.6
107.5
100.4
100.4
87.3
107.5
64.9
85.1
115.1
115.1
109.0
109.0
67.0
86.5
45.3
64.9
120.8
120.8
114.5
−
51.5
71.7
49.3
85
90.3
90.3
89.7
89.7
93.0
79.0
102.4
67.1
109.0
58.1
96.0
96.0
98.3
98.3
95.7
86.1
104.9
72.1
111.1
61.6
100.8
100.8
104.9
104.9
97.6
92.9
106.6
76.6
112.5
64.4
104.6
104.6
108.9
108.9
99.3
99.3
108.0
80.7
113.6
67.0
107.6
107.6
112.0
112.0
105.3
105.3
109.0
84.6
114.5
69.4
115
EAT (db)
75
80
74.9
74.9
64.9
74.9
76.6
76.6
61.0
73.8
86.7
86.7
50.5
63.4
96.1
96.1
38.7
51.7
102.7
−
41.9
79.6
79.6
69.0
79.6
79.8
79.8
65.6
79.8
89.2
89.2
53.8
68.7
98.4
98.4
40.0
54.8
104.5
−
43.4
83.7
83.7
72.5
83.7
83.8
83.8
68.8
83.8
91.0
91.0
56.8
73.5
100.0
100.0
41.1
57.6
105.7
−
44.7
87.0
87.0
75.4
87.0
87.1
87.1
71.6
87.1
92.5
92.5
59.6
78.2
101.3
101.3
42.1
60.2
106.7
−
45.9
89.5
89.5
77.6
89.5
89.6
89.6
73.6
89.6
93.6
93.6
62.3
82.5
102.2
102.2
42.9
62.6
107.4
−
46.9
85
84.9
84.9
86.5
86.5
86.7
76.4
96.1
64.7
102.7
55.8
90.3
90.3
94.1
94.1
89.2
83.6
98.4
69.7
104.5
59.0
94.9
94.9
98.7
98.7
91.0
90.3
100.0
74.2
105.7
61.9
98.6
98.6
102.6
102.6
96.7
96.7
101.3
78.4
106.7
64.4
101.5
101.5
105.6
105.6
102.7
102.7
102.2
82.3
107.4
66.8
Do not operate in this region
Cubic feet per minute (supply air)
Entering air temperature (dry bulb)
Entering air temperature (wet bulb)
Sensible heat capacity
Total cooling capacity
Specifications subject to change without notice.
509 31 3508 00
Table 14 – COOLING CAPACITIES
RGS102
58
EAT (wb)
2550 Cfm
62
67
72
76
58
EAT (wb)
2975 Cfm
62
67
72
76
58
EAT (wb)
3400 Cfm
62
67
72
76
58
EAT (wb)
3825 Cfm
62
67
72
76
62
EAT (wb)
4250 Cfm
58
67
72
76
LEGEND:
Cfm
EAT(db)
EAT(wb)
SHC
TC
-
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
75
89.7
77.8
94.3
71.0
105.0
59.0
115.9
46.4
−
−
95.3
82.6
97.9
76.7
108.5
62.8
119.1
47.9
−
−
100.0
86.7
101.1
81.5
111.1
66.2
121.3
49.2
−
−
104.0
90.2
104.2
85.7
113.1
69.4
123.0
50.3
−
−
107.4
93.1
107.5
88.4
114.7
72.5
124.3
51.3
−
−
85
EA (dB)
80
89.7
89.7
94.3
84.4
105.0
72.6
115.9
60.0
123.7
49.3
95.3
95.3
97.9
92.2
108.5
78.4
119.1
63.5
126.4
51.1
100.0
100.0
101.1
98.7
111.1
83.9
121.3
66.7
128.3
52.7
104.0
104.0
104.2
104.2
113.1
89.1
123.0
69.7
129.7
54.0
107.4
107.4
107.5
107.5
114.7
94.0
124.3
72.4
130.7
55.3
85
101.6
101.6
97.9
97.9
105.0
86.1
115.9
73.6
123.7
63.3
107.9
107.9
107.8
107.8
108.5
94.1
119.1
79.2
126.4
67.4
113.3
113.3
115.8
115.8
111.1
101.6
121.3
84.3
128.3
70.7
117.8
117.8
122.7
122.7
113.1
108.8
123.0
89.0
129.7
73.7
121.7
121.7
126.6
126.6
115.6
115.6
124.3
93.4
130.7
76.5
75
85.2
73.9
88.7
68.2
99.3
56.6
110.4
44.3
−
−
90.7
78.6
92.1
73.9
102.6
60.4
113.5
45.8
−
−
95.2
82.6
95.7
78.2
105.1
63.9
115.6
47.1
−
−
99.1
86.0
99.3
81.7
107.1
67.1
117.2
48.3
−
−
102.5
88.9
102.6
84.4
108.7
70.2
118.5
49.3
−
−
8.5 TONS − Two Stage Cooling
AMBIENT TEMPERATURE
95
105
EA (dB)
EA (dB)
80
85
75
80
85.2
96.5
79.6
79.6
85.2
96.5
69.0
79.6
88.7
95.2
81.3
81.3
81.7
95.2
64.7
78.1
99.3
99.3
92.2
92.2
70.1
83.7
53.6
67.1
110.4 110.4
104.2
104.2
57.9
71.5
41.9
55.5
118.3 118.3
−
112.4
47.3
61.4
−
45.3
90.7 102.7
84.8
84.8
90.7 102.7
73.5
84.8
92.1 104.7
85.4
85.4
89.3 104.7
69.6
84.5
102.6 102.6
95.4
95.4
76.0
91.7
57.4
73.1
113.5 113.5
107.2
107.2
61.5
77.1
43.5
59.2
120.8 120.8
−
114.8
49.2
65.3
−
47.0
95.2 107.9
89.3
89.3
95.2 107.9
77.4
89.3
95.7 111.7
89.4
89.4
94.9 111.7
73.5
89.4
105.1 105.1
97.8
97.8
81.6
99.3
61.0
78.7
115.6 115.6
109.4
109.4
64.7
82.3
44.9
62.5
122.6 122.6
−
116.3
50.7
68.6
−
48.6
99.1 112.3
93.2
93.2
99.1 112.3
80.8
93.2
99.3 116.9
93.3
93.3
99.3 116.9
76.7
93.3
107.1 107.1
99.9
99.9
86.8 106.5
64.3
84.1
117.2 117.2
110.9
110.9
67.7
87.1
46.1
65.6
124.0 124.0
−
117.5
52.1
71.7
−
50.0
102.5 116.1
96.5
96.5
102.5 116.1
83.7
96.5
102.6 120.8
96.6
96.6
102.6 120.8
79.5
96.6
108.7 113.5
101.7
101.7
91.8 113.5
67.5
89.2
118.5 118.5
112.1
112.1
70.5
91.7
47.2
68.5
125.0 125.0
−
118.5
53.5
74.6
−
51.3
85
90.1
90.1
91.5
91.5
92.2
80.7
104.2
69.1
112.4
59.3
96.1
96.1
99.4
99.4
95.4
88.8
107.2
74.9
114.8
63.0
101.1
101.1
105.3
105.3
97.8
96.5
109.4
80.2
116.3
66.4
105.5
105.5
109.8
109.8
103.8
103.8
110.9
85.2
117.5
69.5
109.3
109.3
113.7
113.7
110.8
110.8
112.1
89.9
118.5
72.4
75
73.8
64.0
74.3
60.6
84.1
50.3
96.0
38.8
−
−
78.7
68.2
78.8
64.8
86.9
54.0
99.2
40.6
−
−
82.9
71.8
83.0
68.2
89.1
57.5
101.5
42.1
−
−
86.5
75.0
86.6
71.2
91.0
60.9
103.3
43.5
−
−
89.5
77.6
89.6
73.7
92.6
64.0
104.7
44.7
−
−
115
EA (dB)
80
73.8
73.8
74.3
73.6
84.1
63.8
96.0
52.4
105.7
42.9
78.7
78.7
78.8
78.8
86.9
69.7
99.2
56.3
108.2
44.8
82.9
82.9
83.0
83.0
89.1
75.3
101.5
59.9
109.7
46.4
86.5
86.5
86.6
86.6
91.0
80.6
103.3
63.3
110.8
47.8
89.5
89.5
89.6
89.6
92.6
85.6
104.7
66.4
111.6
49.2
85
83.6
83.6
86.5
86.5
84.1
77.3
96.0
65.9
105.7
56.7
89.1
89.1
92.8
92.8
86.9
85.3
99.2
72.0
108.2
60.7
93.9
93.9
97.7
97.7
93.0
93.0
101.5
77.7
109.7
64.2
97.9
97.9
101.9
101.9
100.3
100.3
103.3
83.0
110.8
67.4
101.4
101.4
105.5
105.5
107.2
107.2
104.7
88.1
111.6
70.3
Do not operate in this region
Cubic feet per minute (supply air)
Entering air temperature (dry bulb)
Entering air temperature (wet bulb)
Sensible heat capacity
Total capacity
509 31 3508 00
Specifications subject to change without notice.
27
Table 15 – COOLING CAPACITIES
RGS121
EAT (wb)
3000 Cfm
58
62
67
72
76
EAT (wb)
3500 Cfm
58
62
67
72
76
EAT (wb)
4000 Cfm
58
62
67
72
76
EAT (wb)
4500 Cfm
58
62
67
72
76
EAT (wb)
5000 Cfm
58
62
67
72
76
LEGEND:
−
−
Cfm
−
EAT(db) −
EAT(wb) −
SHC
−
TC
−
28
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
75
106.3
92.2
112.5
83.8
123.5
69.2
134.3
53.8
−
112.9
97.9
116.3
90.2
126.9
73.2
137.5
55.3
−
117.8
102.2
119.1
95.8
129.4
76.9
139.7
56.7
−
121.7
105.6
121.8
100.2
131.3
80.3
141.5
57.9
−
125.0
108.4
125.1
102.9
132.8
83.6
142.8
59.0
−
85
EAT (db)
80
106.3
106.3
112.5
99.5
123.5
85.0
134.3
69.6
142.4
56.8
112.9
112.9
116.3
108.2
126.9
91.3
137.5
73.4
145.1
59.0
117.8
117.8
119.1
115.9
129.4
97.3
139.7
76.8
147.0
60.6
121.7
121.7
121.8
121.8
131.3
102.9
141.5
80.0
148.3
62.1
125.0
125.0
125.1
125.1
132.8
108.3
142.8
82.9
149.4
63.4
85
120.5
120.5
115.2
115.2
123.5
100.7
134.3
85.5
142.4
73.3
127.8
127.8
126.2
126.2
126.9
109.4
137.5
91.5
145.1
78.2
133.5
133.5
136.0
136.0
129.4
117.7
139.7
97.0
147.0
81.7
137.9
137.9
143.4
143.4
131.3
125.5
141.5
102.1
148.3
84.9
141.6
141.6
147.2
147.2
133.0
133.0
142.8
106.9
149.4
87.9
75
101.7
88.2
106.5
81.0
117.8
66.8
128.5
51.6
−
108.0
93.6
110.5
87.4
120.9
70.8
131.4
53.1
−
113.0
98.0
113.5
92.8
123.3
74.5
133.5
54.4
−
116.8
101.3
116.9
96.1
125.1
78.0
135.1
55.6
−
120.0
104.0
120.1
98.8
126.5
81.2
136.3
56.7
−
10 TONS − Single Stage Cooling
AMBIENT TEMPERATURE
95
105
EAT (db)
EAT (db)
80
85
75
80
101.7
115.2
96.6
96.6
101.7
115.2
83.8
96.6
106.5
112.3
99.9
99.9
96.6
112.3
77.8
93.4
117.8
117.8
111.3
111.3
82.5
98.3
64.1
79.8
128.5
128.5
122.0
122.0
67.4
83.2
49.1
64.9
136.3
136.3
129.5
−
54.7
71.2
52.3
108.0
122.3
102.7
102.7
108.0
122.3
89.0
102.7
110.5
123.3
103.8
103.8
105.3
123.3
84.0
101.8
120.9
120.9
114.3
114.3
88.9
107.1
68.1
86.2
131.4
131.4
124.7
124.7
71.1
89.2
50.6
68.7
138.8
138.8
131.7
−
56.7
75.8
54.3
113.0
128.0
107.5
107.5
113.0
128.0
93.3
107.5
113.5
132.5
107.7
107.7
112.6
132.5
88.6
107.7
123.3
123.3
116.5
116.5
95.0
115.4
71.8
92.3
133.5
133.5
126.6
126.6
74.6
94.7
51.9
72.1
140.5
140.5
133.2
−
58.4
79.3
55.8
116.8
132.3
111.2
111.2
116.8
132.3
96.4
111.2
116.9
137.6
111.3
111.3
116.9
137.6
91.6
111.3
125.1
125.1
118.2
118.2
100.7
123.3
75.3
98.0
135.1
135.1
128.0
128.0
77.7
99.9
53.1
75.2
141.8
141.8
134.3
−
59.8
82.5
57.3
120.0
135.9
114.3
114.3
120.0
135.9
99.1
114.3
120.1
141.4
114.4
114.4
120.1
141.4
94.1
114.4
126.5
130.8
119.6
119.6
106.0
130.8
78.6
103.4
136.3
136.3
129.1
129.1
80.7
104.7
54.1
78.2
142.8
142.8
135.1
−
61.2
85.5
58.6
85
109.4
109.4
109.0
109.0
111.3
95.5
122.0
80.7
129.5
68.8
116.3
116.3
119.5
119.5
114.3
104.4
124.7
86.7
131.7
73.1
121.8
121.8
126.7
126.7
116.5
112.8
126.6
92.3
133.2
76.5
126.0
126.0
131.0
131.0
120.8
120.8
128.0
97.4
134.3
79.7
129.5
129.5
134.7
134.7
128.2
128.2
129.1
102.2
135.1
82.7
75
91.0
78.9
92.7
74.2
104.0
61.0
114.7
46.3
−
96.8
83.9
97.1
79.8
106.8
65.0
117.2
47.8
−
101.5
88.0
101.6
83.6
108.9
68.8
118.8
49.1
−
105.0
91.0
105.1
86.5
110.5
72.3
120.1
50.3
−
107.9
93.6
108.0
88.9
111.8
75.6
121.1
51.3
−
115
EAT (db)
80
91.0
91.0
92.7
89.7
104.0
76.8
114.7
62.1
121.8
49.7
96.8
96.8
97.1
97.1
106.8
83.2
117.2
65.9
123.6
51.5
101.5
101.5
101.6
101.6
108.9
89.3
118.8
69.3
124.9
53.0
105.0
105.0
105.1
105.1
110.5
95.0
120.1
72.4
125.8
54.4
107.9
107.9
108.0
108.0
111.8
100.3
121.1
75.4
126.5
55.6
85
103.1
103.1
105.2
105.2
104.0
92.5
114.7
77.9
121.8
66.2
109.7
109.7
114.3
114.3
106.8
101.3
117.2
83.9
123.6
70.0
115.0
115.0
119.6
119.6
109.8
109.8
118.8
89.5
124.9
73.5
118.9
118.9
123.7
123.7
117.7
117.7
120.1
94.6
125.8
76.6
122.3
122.3
127.2
127.2
125.1
125.1
121.1
99.4
126.5
79.4
Do not operate in this region
Cubic feet per minute (supply air)
Entering air temperature (dry bulb)
Entering air temperature (wet bulb)
Sensible heat capacity
Total cooling capacity
Specifications subject to change without notice.
509 31 3508 00
Table 16 – COOLING CAPACITIES
RGS120
58
EAT (wb)
3000 Cfm
62
67
72
76
58
EAT (wb)
3500 Cfm
62
67
72
76
58
EAT (wb)
4000 Cfm
62
67
72
76
58
EAT (wb)
4500 Cfm
62
67
72
76
62
EAT (wb)
5000 Cfm
58
67
72
76
LEGEND:
Cfm
EAT(db)
EAT(wb)
SHC
TC
-
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
75
107.6
93.2
113.6
84.6
124.4
69.7
135.8
54.3
−
−
114.2
98.9
117.2
91.1
127.8
73.8
139.4
56.0
−
−
119.0
103.1
120.3
96.5
130.5
77.7
142.1
57.6
−
−
123.0
106.6
123.4
100.9
132.6
81.4
144.2
59.0
−
−
126.5
109.6
126.5
104.0
134.2
84.9
145.8
60.3
−
−
85
EAT (db)
80
107.6
107.6
113.6
100.6
124.4
85.7
135.8
70.4
145.3
57.8
114.2
114.2
117.2
109.5
127.8
92.3
139.4
74.6
148.8
60.2
119.0
119.0
120.3
116.8
130.5
98.6
142.1
78.4
151.4
62.3
123.0
123.0
123.4
122.7
132.6
104.6
144.2
82.1
153.4
64.1
126.5
126.5
126.5
126.5
134.2
110.4
145.8
85.6
155.1
65.9
85
121.9
121.9
116.5
116.5
124.4
101.7
135.8
86.6
145.3
74.3
129.4
129.4
127.9
127.9
127.8
110.8
139.4
93.1
148.8
79.5
134.9
134.9
137.1
137.1
130.5
119.5
142.1
99.3
151.4
83.8
139.5
139.5
144.4
144.4
132.6
127.9
144.2
105.2
153.4
87.8
143.3
143.3
149.1
149.1
135.9
135.9
145.8
110.8
155.1
91.5
75
102.5
88.8
107.1
81.5
118.4
67.1
129.7
52.0
−
−
108.9
94.3
111.0
88.1
121.7
71.3
133.0
53.7
−
−
114.0
98.7
114.7
93.0
124.1
75.2
135.5
55.2
−
−
117.8
102.1
117.9
96.9
126.0
78.9
137.4
56.6
−
−
121.2
105.0
121.3
99.7
127.5
82.4
139.0
57.9
−
−
10 TONS − Two Stage Cooling
AMBIENT TEMPERATURE
95
105
EAT (db)
EAT (db)
80
85
75
80
102.5
116.2
96.8
96.8
102.5
116.2
83.9
96.8
107.1
113.4
99.7
99.7
97.4
113.4
78.0
93.9
118.4
118.4
111.5
111.5
83.2
99.2
64.3
80.3
129.7
129.7
122.8
122.8
68.1
84.2
49.3
65.4
139
139
−
131.9
55.6
72.1
−
53.1
108.9
123.4
102.9
102.9
108.9
123.4
89.1
102.9
111.0
124.7
104.0
104.0
106.4
124.7
83.9
101.7
121.7
121.7
114.5
114.5
89.8
108.3
68.4
87.0
133.0
133
125.8
125.8
72.2
90.8
51.0
69.6
142.2
142.2
−
134.9
58.0
77.1
−
55.4
114.0
129.2
108.0
108.0
114.0
129.2
93.6
108.0
114.7
132.8
108.2
108.2
112.9
132.8
88.9
108.2
124.1
124.1
116.8
116.8
96.2
117.2
72.3
93.3
135.5
135.5
128.2
128.2
76.1
97.1
52.5
73.6
144.7
144.7
−
137.1
60.0
81.4
−
57.5
117.8
133.6
111.9
111.9
117.8
133.6
97.0
111.9
117.9
139.0
112.0
112.0
117.9
139
92.1
112.0
126
126.0
118.7
118.7
102.3
125.7
76.1
99.5
137.4
137.4
129.9
129.9
79.8
103.1
54.0
77.3
146.6
146.6
−
138.9
61.9
85.6
−
59.4
121.2
137.4
115.1
115.1
121.2
137.4
99.8
115.1
121.3
142.9
115.2
115.2
121.3
142.9
94.7
115.2
127.5
133.8
120.1
120.1
108.1
133.8
79.6
105.3
139.0
139.0
131.3
131.3
83.4
108.9
55.3
81.0
148.2
148.2
−
−
63.7
89.5
−
−
85
109.7
109.7
109.8
109.8
111.5
96.3
122.8
81.6
131.9
69.6
116.6
116.6
119.5
119.5
114.5
105.5
125.8
88.2
134.9
74.5
122.4
122.4
127.5
127.5
116.8
114.4
128.2
94.6
137.1
78.8
126.9
126.9
132.0
132
122.9
122.9
129.9
100.7
138.9
83
130.5
130.5
135.8
135.8
131.0
131
131.3
106.6
−
−
75
90.5
78.4
91.8
73.7
103.3
60.8
115
46.4
−
−
96.3
83.4
96.5
79.3
106.6
65.2
117.9
48.1
−
−
101.1
87.6
101.3
83.2
108.7
69.1
120.0
49.7
−
−
105.3
91.2
105.4
86.6
110.4
72.9
121.6
51.1
−
−
108.4
93.9
108.5
89.1
111.9
76.4
122.9
52.5
−
−
115
EAT (db)
80
90.5
90.5
91.8
89.3
103.3
76.8
115
62.5
124.1
50.4
96.3
96.3
96.5
96.5
106.6
83.8
117.9
66.7
126.8
52.7
101.1
101.1
101.3
101.3
108.7
90.1
120.0
70.7
−
−
105.3
105.3
105.4
105.4
110.4
96.2
121.6
74.5
−
−
108.4
108.4
108.5
108.5
111.9
102.0
122.9
78.2
−
−
85
102.6
102.6
104.9
104.9
103.3
92.8
115
78.6
124.1
66.9
109.1
109.1
113.7
113.7
106.6
102.3
117.9
85.4
126.8
71.6
114.6
114.6
119.3
119.3
111.1
111.1
120.0
91.8
−
−
119.3
119.3
124.2
124.2
119.6
119.6
121.6
98
−
−
122.8
122.8
127.8
127.8
127.6
127.6
122.9
104
−
−
Do not operate in this region
Cubic feet per minute (supply air)
Entering air temperature (dry bulb)
Entering air temperature (wet bulb)
Sensible heat capacity
Total capacity
509 31 3508 00
Specifications subject to change without notice.
29
Table 17 – COOLING CAPACITIES 12.5 TONS − Two Stage Cooling
RGS150
58
EAT (wb)
3600 Cfm
62
67
72
76
58
EAT (wb)
4200 Cfm
62
67
72
76
58
EAT (wb)
4800 Cfm
62
67
72
76
58
EAT (wb)
5400 Cfm
62
67
72
76
62
EAT (wb)
6000 Cfm
58
67
72
76
LEGEND:
Cfm
EAT(db)
EAT(wb)
SHC
TC
30
-
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
75
127.6
110.3
136.1
96.6
146.2
78.5
155.9
60.1
−
−
132.2
115.0
139.6
102.5
149.5
81.8
159.0
61.4
−
−
136.7
118.9
142.2
107.7
152.1
84.8
161.3
62.6
−
−
140.5
122.2
144.3
112.2
154.2
87.6
163.1
63.6
−
−
143.6
124.9
146.1
116.1
155.8
90.1
164.5
64.5
−
−
85
EAT (db)
80
127.6
126.6
136.1
112.8
146.2
94.4
155.9
76.6
163.0
62.0
132.2
132.2
139.6
120.8
149.5
99.6
159.0
79.6
165.7
64.6
136.7
136.7
142.2
127.8
152.1
104.3
161.3
82.2
167.7
66.4
140.5
140.5
144.3
133.9
154.2
108.6
163.1
84.6
169.3
67.6
143.6
143.6
146.1
139.3
155.8
112.6
164.5
86.7
170.6
68.7
85
142.9
142.9
136.1
129.0
146.2
110.3
155.9
93.2
163
81.8
149.5
149.5
139.6
139
149.5
117.4
159.0
97.8
165.7
87.7
154.5
154.5
147.8
147.8
152.1
123.7
161.3
101.9
167.7
91.4
158.8
158.8
155.7
155.7
154.2
129.6
163.1
105.6
169.3
93.7
162.3
162.3
162.4
162.4
155.8
135
164.5
108.9
170.6
95.8
75
121.7
105.8
131.1
94.7
142.0
76.9
152.4
58.7
−
−
128.2
111.5
134.7
100.8
145.4
80.6
155.5
60.2
−
−
133.0
115.7
137.4
106.2
148.0
83.8
157.8
61.4
−
−
136.9
119
139.6
110.9
150.0
86.8
159.7
62.5
−
−
140.1
121.8
141.7
114.7
151.6
89.6
161.2
63.5
−
−
AMBIENT TEMPERATURE
95
105
EAT (db)
EAT (db)
80
85
75
80
121.7
137.6
115.0
115.0
121.7
137.6
99.9
115.0
131.1
131.1
123.8
123.8
111.2
127.7
91.4
108.0
142.0
142.0
136.2
136.2
93.1
109.2
74.7
91.0
152.4
152.4
147.2
147.2
75.2
91.7
56.8
73.3
160.0
160
−
155.1
61.1
80.9
−
59.5
128.2
144.9
121.9
121.9
128.2
144.9
106.0
121.9
134.7
138
128.0
128.0
119.4
138
98.1
116.8
145.4
145.4
139.6
139.6
98.7
116.8
78.5
96.9
155.5
155.5
150.3
150.3
78.5
96.8
58.3
76.7
162.8
162.8
−
157.8
63.5
86.3
−
61.5
133.0
150.3
127.7
127.7
133.0
150.3
111.0
127.7
137.4
147.1
131.0
131.0
126.7
147.1
103.6
124.2
148
148
142.2
142.2
103.8
123.7
82.0
102.3
157.8
157.8
152.5
152.5
81.4
101.3
59.7
79.7
164.9
164.9
−
159.9
65
89.2
−
63.1
136.9
154.7
131.8
131.8
136.9
154.7
114.7
131.8
139.6
155
133.5
133.5
132.9
155
108.1
130.2
150.0
150.0
144.2
144.2
108.5
130.1
85.2
107.3
159.7
159.7
154.3
154.3
83.9
105.4
60.8
82.5
166.5
166.5
−
161.5
66.4
91.7
−
64.5
140.1
158.3
135.1
135.1
140.1
158.3
117.5
135.1
141.7
161.5
135.6
135.6
138.1
161.5
112.1
135.6
151.6
151.6
145.9
145.9
112.8
136
88.3
112.0
161.2
161.2
155.8
155.8
86.3
109.1
61.9
85.1
167.8
167.8
−
162.8
67.5
94.1
−
65.7
85
130
130
124.5
124.5
136.2
107.3
147.2
89.7
155.1
79.3
137.8
137.8
135.6
135.6
139.6
115.2
150.3
95
157.8
83.3
144.3
144.3
144.7
144.7
142.2
122.6
152.5
99.8
159.9
86.4
149
149
152.4
152.4
144.2
129.4
154.3
104.2
161.5
89.2
152.7
152.7
159.2
159.2
145.9
135.8
155.8
108.2
162.8
91.8
75
108.3
94.1
114.9
87.3
128.8
71.7
140.1
54.2
−
−
115.0
99.9
119.1
93.9
132.1
75.7
143.1
55.8
−
−
120.6
104.9
122.8
99.3
134.6
79.4
145.4
57.2
−
−
125.2
108.9
125.8
103.9
136.7
82.8
147.1
58.4
−
−
128.7
111.9
128.8
106.4
138.3
85.9
148.5
59.6
−
−
115
EAT (db)
80
108.3
108.3
114.9
103.8
128.8
88.1
140.1
70.6
148.2
57.0
115.0
115.0
119.1
112.6
132.1
94.3
143.1
74.2
150.8
58.9
120.6
120.6
122.8
119.8
134.6
99.9
145.4
77.3
152.8
60.5
125.2
125.2
125.8
125.8
136.7
105.1
147.1
80.2
154.2
61.9
128.7
128.7
128.8
128.8
138.3
110.0
148.5
82.9
155.5
63.3
85
122.6
122.6
120.3
120.3
128.8
104.6
140.1
87.0
148.2
76.3
130.1
130.1
131.2
131.2
132.1
112.8
143.1
92.5
150.8
79.9
136.4
136.4
140.3
140.3
134.6
120.4
145.4
97.5
152.8
83.1
141.6
141.6
147.8
147.8
136.7
127.4
147.1
102
154.2
86.1
145.5
145.5
151.2
151.2
138.3
134.1
148.5
106.3
155.5
88.8
Do not operate in this region
Cubic feet per minute (supply air)
Entering air temperature (dry bulb)
Entering air temperature (wet bulb)
Sensible heat capacity
Total capacity
Specifications subject to change without notice.
509 31 3508 00
Table 18 – STATIC PRESSURE ADDERS (Factory Options and/or Accessories)
Economizer
CFM
Vertical
Economizer
Horizontal
Economizer*
CFM
Vertical
Economizer
Horizontal
Economizer*
600
800
6 TONS
1000 1250 1500 1750 2000 2250 2500 2750 3000
0.01
0.02
0.04
0.05
0.07
0.09
0.12
0.15
0.18
0.22
0.26
0.02
0.03
0.04
0.06
0.08
0.10
0.13
0.15
0.18
0.23
0.28
7.5 − 12.5 TONS
3500 3750 4000
2250
2500
2750
3000
3250
0.06
0.08
0.09
0.12
0.13
0.15
0.17
0.08
0.10
0.13
0.15
0.18
0.21
0.25
4250
4500
4750
5000
5500 5750 6000
0.20
0.22
0.25
0.29
0.33
0.40
0.44
0.48
0.28
0.30
0.34
0.39
0.43
0.51
0.56
0.60
* Available as field installed accessories only.
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 18. 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, recommend the lower horsepower option.
5. For information on the electrical properties of motors, please see the Electrical information section of this book.
6. For more information on the performance limits of motors, see the application data section of this book.
509 31 3508 00
Specifications subject to change without notice.
31
FAN PERFORMANCE
Table 19 – RGS072, 3 PHASE, 6 TON HORIZONTAL SUPPLY
0.2
CFM
1800
1950
2100
2250
2400
2550
2700
2850
3000
CFM
1800
1950
2100
2250
2400
2550
2700
2850
RPM
BHP
Field−Supplied
Drive1
913
0.64
972
0.78
1032
0.95
1093
1.14
1155
1.36
1217
1.60
1280
1.87
1343
2.17
1406
2.50
1.2
RPM
BHP
1322
1366
1411
1457
1505
1554
1604
1656
1.56
1.75
1.97
2.21
2.48
2.78
3.10
3.46
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
0.4
0.6
0.8
RPM
BHP
RPM
BHP
RPM
BHP
1.0
RPM
BHP
Standard Static Option
Medium Static Option
1010
0.80
1098
0.98
1178
1.16
1252
1.35
1065
0.96
1148
1.14
1226
1.34
1298
1.54
1120
1.14
1200
1.33
1275
1.54
1345
1.75
1177
1.34
1254
1.55
1325
1.76
1393
1.98
1234
1.57
1308
1.78
1377
2.01
1443
2.24
1293
1.82
1363
2.05
1430
2.28
1494
2.53
1352
2.10
1420
2.34
1484
2.59
1546
2.84
1412
2.42
1477
2.67
1539
2.93
1599
3.19
1472
2.76
1535
3.03
1595
3.29
1653
3.57
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
1.4
1.6
1.8
2.0
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
Medium Static Option
High Static Option
1388
1.77
1451
1.98
1510
2.21
1568
2.44
1430
1.97
1491
2.20
1550
2.43
1606
2.67
1473
2.20
1533
2.43
1590
2.67
1645
2.92
1518
2.45
1576
2.69
1632
2.94
1686
3.20
1564
2.73
1621
2.98
1676
3.24
1729
3.51
1612
3.03
1667
3.30
1721
3.57
−
−
1660
3.37
1715
3.64
−
−
−
−
−
−
−
−
−
−
−
−
NOTE: For more information, see General Fan Performance Notes on page 32.
Boldface indicates field−supplied drive is required.
1. Recommend using field−supplied blower pulley (part no. 1175830), motor pulley (part no. 1175849) and belt (part no. 1178179).
Table 20 – RGS072, 3 PHASE, 6 TON VERTICAL SUPPLY
0.2
CFM
1800
1950
2100
2250
2400
2550
2700
2850
3000
CFM
1800
1950
2100
2250
2400
2550
2700
2850
RPM
BHP
Field−Supplied
Drive1
967
0.63
1029
0.77
1091
0.93
1154
1.11
1218
1.32
1283
1.55
1348
1.80
1414
2.09
1479
2.40
RPM
1406
1454
1502
1552
1603
1655
1709
1763
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
0.4
0.6
0.8
RPM
BHP
RPM
BHP
RPM
BHP
Standard Static Option
1.0
RPM
BHP
Medium Static Option
1075
0.80
1170
0.97
1255
1.13
1132
0.96
1223
1.14
1306
1.32
1189
1.14
1278
1.33
1358
1.52
1248
1.33
1333
1.55
1411
1.75
1308
1.55
1390
1.78
1466
2.01
1369
1.80
1448
2.05
1521
2.29
1431
2.07
1507
2.33
1578
2.59
1493
2.37
1566
2.65
1636
2.92
1556
2.70
1627
3.00
1694
3.29
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
1.2
1.4
1.6
1.8
BHP
RPM
BHP
RPM
BHP
RPM
BHP
Medium Static Option
High Static Option
1.43
1475
1.58
1540
1.72
1601
1.87
1.65
1521
1.82
1585
1.98
1645
2.13
1.89
2.07
1631
2.25
1690
2.42
1568
2.15
1617
2.35
1678
2.54
1737
2.73
2.44
1666
2.65
1727
2.86
1784
3.06
2.75
1717
2.98
1776
3.20
3.42
1833
3.09
1769
3.33
1827
3.57
−
−
3.45
−
−
−
−
−
−
1333
1382
1433
1484
1537
1590
1645
1701
1757
1.28
1.49
1.71
1.96
2.23
2.52
2.84
3.19
3.57
2.0
RPM
BHP
1660
1703
1747
1793
1839
1887
−
−
2.00
2.29
2.59
2.922
3.26
3.64
−
−
NOTE: For more information, see General Fan Performance Notes on page 32.
Boldface indicates field−supplied drive is required.
1. Recommend using field−supplied blower pulley (part no. 1175830), motor pulley (part no. 1175849) and belt (part no. 1178179).
2. Recommend using field−supplied blower pulley (part no. 1175314), motor pulley (part no. ?) and belt (part no. ?).
32
Specifications subject to change without notice.
509 31 3508 00
FAN PERFORMANCE (cont.)
Table 21 – RGS090 / 091, 3 PHASE, 7.5 TON HORIZONTAL SUPPLY
CFM
2250
2438
2625
2813
3000
3188
3375
3563
3750
CFM
2250
2438
2625
2813
3000
3188
3375
3563
3750
0.2
RPM
BHP
505
533
562
591
621
652
682
713
745
0.52
0.62
0.74
0.88
1.03
1.21
1.40
1.61
1.85
1.2
RPM
BHP
838
854
872
890
910
930
951
973
996
1.81
1.96
2.12
2.31
2.51
2.74
2.99
3.26
3.55
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
0.4
0.6
0.8
1.0
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
Standard Static Option
Medium Static Option
586
0.73
657
0.97
722
1.22
782
1.50
610
0.85
679
1.09
742
1.36
800
1.65
635
0.98
701
1.23
1.51
819
1.81
762
661
1.13
725
1.39
783
1.68
839
1.98
688
1.29
749
1.57
806
1.87
859
2.18
715
1.48
774
1.77
829
2.07
881
2.40
743
1.68
800
1.98
853
2.30
903
2.63
772
1.91
826
2.22
878
2.55
927
2.89
801
2.15
853
2.48
903
2.82
951
3.18
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
1.4
1.6
1.8
2.0
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
Medium Static Option
High Static Option
891
2.12
941
2.46
988
2.82
1033
3.19
906
2.28
955
2.63
1001
2.99
1046
3.37
922
2.46
970
2.81
1016
3.17
1060
3.56
940
2.65
986
3.01
1031
3.38
1074
3.77
958
2.86
1004
3.23
1048
3.61
1090
4.01
977
3.10
1022
3.47
1065
3.86
1107
4.261
997
3.35
1041
3.74
1083
4.13
1124
4.54
1018
3.63
1061
4.02
1103
4.43
−
−
1040
3.93
1082
4.34
−
−
−
−
NOTE: For more information, see General Fan Performance Notes on page 32.
Boldface indicates field−supplied drive is required.
1
Recommend using field−supplied blower pulley (part no. 1175896), and belt (part no. 1178182).
Table 22 – RGS090 / 091, 3 PHASE, 7.5 TON VERTICAL SUPPLY
CFM
2250
2438
2625
2813
3000
3188
3375
3563
3750
CFM
2250
2438
2625
2813
3000
3188
3375
3563
3750
0.2
RPM
BHP
513
541
570
600
629
660
690
721
752
0.54
0.65
0.77
0.91
1.07
1.25
1.45
1.67
1.91
1.2
RPM
BHP
839
858
878
899
920
942
964
988
1011
1.86
2.02
2.20
2.40
2.62
2.86
3.12
3.41
3.71
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
0.4
0.6
0.8
1.0
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
Standard Static Option
Medium Static Option
595
0.76
665
1.01
728
1.27
786
1.56
620
0.89
688
1.14
750
1.42
806
1.71
645
1.02
712
1.29
772
1.58
827
1.88
672
1.18
736
1.46
794
1.76
848
2.07
699
1.35
761
1.64
818
1.95
871
2.28
726
1.54
787
1.85
842
2.17
894
2.51
754
1.75
813
2.07
867
2.41
917
2.76
783
1.98
840
2.32
892
2.67
941
3.03
812
2.24
867
2.59
918
2.95
966
3.32
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
1.4
1.6
1.8
2.0
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
Medium Static Option
High Static Option
889
2.18
935
2.52
980
2.87
1022
3.23
907
2.35
953
2.70
997
3.06
1039
3.43
926
2.54
972
2.89
1015
3.26
1056
3.64
946
2.75
991
3.11
1033
3.49
1074
3.88
966
2.98
1010
3.35
1052
3.74
1093
4.14
987
3.23
1031
3.61
1072
4.01
1112
4.421
1009
3.50
1052
3.89
1093
4.30
−
−
1032
3.80
1074
4.20
1114
4.61
−
−
1054
4.11
1096
4.53
−
−
−
−
NOTE: For more information, see General Fan Performance Notes on page 32.
Boldface indicates field−supplied drive is required.
1
Recommend using field−supplied blower pulley (part no. 1175896), and belt (part no. 1178182).
509 31 3508 00
Specifications subject to change without notice.
33
FAN PERFORMANCE (cont.)
Table 23 – RGS101 / 102, 3 PHASE, 8.5 TON HORIZONTAL SUPPLY
0.2
CFM
2550
2763
2975
3188
3400
3613
3825
4038
4250
CFM
2550
2763
2975
3188
3400
3613
3825
4038
4250
RPM
BHP
Field−Supplied
Drive1
497
0.48
524
0.58
551
0.70
580
0.84
609
1.00
638
1.17
668
1.37
698
1.59
728
1.83
1.2
RPM
BHP
833
849
865
883
902
921
941
963
984
1.21
1.36
1.52
1.70
1.90
2.13
2.37
2.63
2.92
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
0.4
0.6
0.8
RPM
BHP
RPM
BHP
RPM
BHP
1.0
RPM
BHP
Standard Static Option
Medium Static Option
0.61
651
0.75
717
0.90
777
1.05
0.72
671
0.87
735
1.03
794
1.19
0.86
693
1.01
754
1.18
812
1.35
1.00
716
1.17
775
1.34
831
1.52
1.17
739
1.35
797
1.53
851
1.71
1.35
763
1.54
819
1.73
871
1.93
1.56
788
1.76
842
1.96
893
2.16
1.79
813
2.00
866
2.20
915
2.42
2.04
839
2.26
890
2.47
938
2.70
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
1.4
1.6
1.8
2.0
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
Medium Static Option
High Static Option
886
1.38
936
1.56
984
1.74
1029
1.93
900
1.53
950
1.72
996
1.90
1041
2.10
916
1.70
964
1.89
1010
2.09
1054
2.29
933
1.89
980
2.09
1025
2.29
1068
2.50
950
2.10
996
2.30
1041
2.51
1083
2.73
969
2.33
1014
2.54
1057
2.76
1099
2.982
988
2.58
1032
2.80
1075
3.02
1116
3.25
1008
2.86
1051
3.08
1093
3.31
1133
3.55
1029
3.15
1071
3.39
1112
3.63
1152
3.87
579
602
626
651
677
703
730
758
786
NOTE: For more information, see General Fan Performance Notes on page 32.
Boldface indicates field−supplied drive is required.
1
2
Recommend using field−supplied blower pulley (part no. 1178189), belt (part no. 1178450).
Recommend using field−supplied motor pulley (part no. 1178133), fan pulley (part no. 1178596) belt (part no.1178182)
Table 24 – RGS101 / 102, 3 PHASE, 8.5 TON VERTICAL SUPPLY
CFM
2550
2763
2975
3188
3400
3613
3825
4038
4250
CFM
2550
2763
2975
3188
3400
3613
3825
4038
4250
0.2
RPM
BHP
526
557
588
621
653
687
720
754
788
0.51
0.62
0.75
0.90
1.06
1.25
1.45
1.69
1.94
1.2
RPM
BHP
836
855
875
897
919
943
967
992
1018
1.20
1.37
1.56
1.77
1.99
2.24
2.51
2.80
3.11
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
0.4
0.6
0.8
1.0
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
Standard Static Option
Medium Static Option
600
0.65
666
0.79
727
0.93
783
1.07
627
0.77
690
0.92
749
1.08
804
1.23
655
0.91
716
1.08
772
1.24
825
1.40
684
1.07
743
1.25
797
1.42
848
1.60
714
1.25
770
1.44
822
1.62
872
1.81
744
1.45
798
1.65
849
1.84
897
2.04
775
1.67
827
1.88
876
2.09
922
2.30
807
1.91
856
2.13
904
2.35
949
2.57
839
2.17
886
2.41
932
2.64
976
2.88
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
1.4
1.6
1.8
2.0
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
Medium Static Option
High Static Option
886
1.34
934
1.48
979
1.61
1022
1.74
904
1.52
950
1.67
995
1.82
1037
1.97
923
1.72
968
1.88
1012
2.04
1053
2.20
943
1.94
987
2.11
1030
2.29
1071
2.46
964
2.18
1007
2.36
1049
2.55
1089
2.731
986
2.44
1029
2.63
1069
2.83
1108
3.02
1010
2.71
1051
2.92
1090
3.13
1129
3.34
1034
3.02
1074
3.24
1112
3.46
1150
3.68
1058
3.34
1097
3.57
−
−
−
−
NOTE: For more information, see General Fan Performance Notes on page 32.
Boldface indicates field−supplied drive is required.
1
34
Recommend using field−supplied motor pulley (part number 1178133), fan pulley (part no.1175896) and belt (part no. 1178182)
Specifications subject to change without notice.
509 31 3508 00
FAN PERFORMANCE (cont.)
Table 25 – RGS120 / 121, 3 PHASE, 10 TON HORIZONTAL SUPPLY
0.2
CFM
3000
3250
3500
3750
4000
4250
4500
4750
5000
CFM
3000
3250
3500
3750
4000
4250
4500
4750
5000
RPM
BHP
Field−Supplied
Drive1
579
0.70
613
0.85
648
1.03
683
1.23
719
1.45
756
1.71
792
1.99
830
2.31
867
2.66
1.2
RPM
BHP
917
938
961
985
1011
1037
1064
1091
1120
1.70
1.93
2.18
2.46
2.76
3.09
3.46
3.85
4.28
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
0.4
0.6
0.8
RPM
BHP
RPM
BHP
RPM
BHP
1.0
RPM
BHP
Standard Static Option
Medium Static Option
0.89
732
1.09
799
1.29
860
1.50
1.06
760
1.27
823
1.49
883
1.71
1.25
788
1.48
850
1.71
907
1.95
1.47
817
1.71
877
1.96
933
2.21
1.71
848
1.97
905
2.23
959
2.50
1.98
879
2.26
934
2.53
987
2.81
2.28
910
2.57
964
2.87
1015
3.16
2.62
943
2.92
995
3.23
1044
3.54
2.98
976
3.30
1026
3.63
1074
3.95
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
1.4
1.6
1.8
2.0
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
Medium Static Option
High Static Option
970
1.91
1021
2.13
1070
2.34
1117
2.56
991
2.16
1041
2.38
1089
2.61
1134
2.85
1013
2.42
1062
2.66
1108
2.91
1153
3.15
1035
2.71
1083
2.97
1129
3.23
1173
3.49
1059
3.03
1106
3.30
1151
3.58
1194
3.85
1084
3.38
1130
3.66
1174
3.95
1216
4.24
1110
3.76
1155
4.06
1198
4.36
1239
4.66
1137
4.16
1180
4.48
1222
4.80
−
−
1164
4.61
1207
4.94
−
−
−
−
660
690
721
753
786
819
853
888
923
NOTE: For more information, see General Fan Performance Notes on page 32.
Boldface indicates field−supplied drive is required.
1 Recommend
using field−supplied blower pulley (part no. 1178190), and belt (part no. 1178181).
Table 26 – RGS120 / 121, 3 PHASE, 10 TON VERTICAL SUPPLY
CFM
3000
3250
3500
3750
4000
4250
4500
4750
5000
CFM
3000
3250
3500
3750
4000
4250
4500
4750
5000
0.2
RPM
BHP
616
655
695
736
777
818
860
902
944
0.79
0.96
1.17
1.41
1.68
1.98
2.32
2.69
3.11
1.2
RPM
BHP
939
962
987
1014
1042
1072
1103
1135
1167
1.79
2.03
2.30
2.60
2.93
3.30
3.70
4.14
4.63
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
0.4
0.6
0.8
1.0
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
Standard Static Option
Medium Static Option
689
0.97
757
1.16
821
1.36
882
1.57
724
1.16
788
1.37
849
1.58
907
1.80
760
1.38
821
1.60
879
1.83
934
2.06
797
1.63
855
1.86
910
2.10
963
2.35
834
1.91
889
2.16
942
2.41
993
2.67
873
2.23
925
2.49
976
2.75
1025
3.02
912
2.58
962
2.85
1010
3.13
1057
3.41
951
2.97
999
3.26
1046
3.55
1091
3.84
991
3.40
1037
3.70
1082
4.00
1125
4.31
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
1.4
1.6
1.8
2.0
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
Medium Static Option
High Static Option
994
2.01
1047
2.24
1098
2.47
1147
2.71
1015
2.26
1066
2.50
1115
2.75
1163
3.00
1038
2.54
2.80
1135
3.05
1181
3.32
1088
1063
2.86
1111
3.12
1157
3.39
1202
3.66
1090
3.20
1136
3.48
1180
3.76
1224
4.04
1118
3.58
1162
3.87
1205
4.16
−
−
1147
4.00
1190
4.29
1232
4.60
−
−
1177
4.45
1219
4.76
−
−
−
−
1209
4.95
−
−
−
−
−
−
NOTE: For more information, see General Fan Performance Notes on page 32.
509 31 3508 00
Specifications subject to change without notice.
35
FAN PERFORMANCE (cont.)
Table 27 – RGS150, 3 PHASE, 12.5 TON HORIZONTAL SUPPLY
CFM
3438
3750
4063
4375
4688
5000
5313
5625
5938
6250
CFM
0.2
RPM
BHP
639
683
728
774
820
867
914
962
1009
−
0.98
1.23
1.52
1.85
2.23
2.66
3.15
3.69
4.30
−
1.2
RPM
BHP
3438
3750
4063
955
985
1017
2.12
2.46
2.84
4375
4688
5000
5313
1050
1084
1120
−
3.27
3.75
4.28
−
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
0.4
0.6
0.8
RPM
BHP
RPM
BHP
RPM
BHP
Standard Static Option
713
1.20
781
1.43
843
1.65
753
1.47
817
1.71
877
1.96
794
1.78
855
2.04
912
2.31
836
2.13
894
2.41
949
2.70
879
2.53
935
2.83
987
3.14
923
2.98
976
3.30
1026
3.63
967
3.49
1018
3.83
1066
4.17
1012
4.05
1061
4.42
−
−
1058
4.68
−
−
−
−
−
−
−
−
−
−
1.0
RPM
BHP
Medium Static Option
901
1.88
933
2.21
966
2.57
1001
2.98
1037
3.44
1074
3.95
1112
4.52
−
−
−
−
−
−
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
1.4
1.6
1.8
2.0
RPM
BHP
RPM
BHP
RPM
BHP
RPM
Medium Static Option
High Static Option
1007
2.35
1056
2.59
1103
2.83
1148
1035
2.71
1083
2.97
1129
3.23
1173
1066
3.12
1112
3.39
1157
3.67
1200
1097
3.56
1142
3.86
1186
4.15
1228
1130
4.06
1174
4.37
1216
4.68
1257
1164
4.61
−
−
1248
5.27
1288
−
−
−
−
−
−
−
BHP
3.08
3.49
3.95
4.45
5.00
5.60
−
NOTE: For more information, see General Fan Performance Notes on page 32.
Boldface indicates field−supplied drive is required.
Table 28 – RGS150, 3 PHASE, 12.5 TON VERTICAL SUPPLY
CFM
3438
3750
4063
4375
4688
5000
5313
5625
5938
6250
CFM
3438
3750
4063
4375
4688
5000
5313
5625
0.2
RPM
685
736
787
839
891
944
997
1051
−
−
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
0.4
0.6
0.8
1.0
BHP
RPM
BHP
RPM
BHP
RPM
BHP
RPM
Standard Static Option
Medium Static Option
1.12
751
1.32
813
1.54
871
1.76
927
1.41
797
1.63
855
1.86
910
2.10
963
1.75
844
1.99
898
2.24
951
2.49
1001
2.14
892
2.40
943
2.67
993
2.94
1041
2.60
941
2.87
990
3.15
1037
3.44
1082
3.11
991
3.40
1037
3.70
1082
4.00
1125
3.69
1042
4.00
1085
4.32
1128
4.64
−
4.34
1093
4.67
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
1.2
RPM
BHP
981
1014
1049
1087
1126
1167
−
−
2.23
2.60
3.02
3.49
4.03
4.63
−
−
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
1.4
1.6
1.8
2.0
RPM
BHP
RPM
BHP
RPM
BHP
RPM
Medium Static Option
High Static Option
1032
2.47
1082
2.72
1130
2.97
1177
1063
2.86
1111
3.12
1157
3.39
1202
1097
3.29
1142
3.57
1186
3.85
1230
1132
3.78
1176
4.08
1218
4.37
1260
1169
4.33
1211
4.64
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
BHP
1.99
2.35
2.75
3.21
3.73
4.31
−
−
−
−
BHP
3.23
3.66
4.14
4.68
−
−
−
−
NOTE: For more information, see General Fan Performance Notes on page 32.
Boldface indicates field−supplied drive is required.
36
Specifications subject to change without notice.
509 31 3508 00
FAN PERFORMANCE (cont.)
Table 29 – PULLEY ADJUSTMENT
150
1457
1419
1380
1342
1303
1265
1227
Medium Static
1518
1484
1449
1415
1380
1346
4.0
4.5
5.0
1188
1150
1111
1073
1311
1277
1242
1208
1173
3 phase
120/121
1.0
Standard Static
3 phase
101/102
0.5
Standard Static
3 phase
090/091
0.0
Standard Static
High Static
1084
1059
1035
1010
986
961
936
912
887
863
838
3 phase
072
MOTOR PULLEY TURNS OPEN
1.5
2.0
2.5
3.0
3.5
MOTOR/DRIVE
COMBO
Standard Static
838
813
789
764
739
715
690
665
640
616
591
Medium Static
1084
1059
1035
1010
986
961
936
912
887
863
838
High Static
1240
1218
1196
1175
1153
1131
1109
1087
1066
1044
1022
3 phase
UNIT
RGH
Standard Static
838
813
789
764
739
715
690
665
640
616
591
Medium Static
1084
1059
1035
1010
986
961
936
912
887
863
838
High Static
1240
1218
1196
1175
1153
1131
1109
1087
1066
1044
1022
High Static
1788
1757
1725
1694
1662
1631
1600
1568
1537
1505
1474
747
721
695
670
644
618
592
566
541
515
489
Medium Static
949
927
906
884
863
841
819
798
776
755
733
High Static
1102
1083
1063
1044
1025
1006
986
967
948
928
909
733
712
690
669
647
626
604
583
561
540
518
Medium Static
936
911
887
862
838
813
788
764
739
715
690
NOTE: Do not adjust pulley further than 5 turns open.
- Factory settings
509 31 3508 00
Specifications subject to change without notice.
37
ECONOMIZER, BAROMETRIC RELIEF, AND PERFORMANCE
6 Ton
7.5 − 12.5
Ton
6 Ton
7.5 − 12.5
Ton
6 Ton
7.5 − 12.5
Ton
6 Ton
7.5 − 12.5
Ton
6 Ton
7.5 − 12.5
Ton
6 Ton
7.5 − 12.5
Ton
Z
38
6 Ton
7.5 − 12.5 Ton
Specifications subject to change without notice.
509 31 3508 00
ELECTRICAL INFORMATION
Table 30 – RGS072, 6 TONS
VOLTAGE
RANGE
COMP (ea)
OFM (ea)
V−Ph−Hz
MIN
MAX
RLA
LRA
WATTS
FLA
208−3−60
187
253
19.0
123
325
1.5
230−3−60
187
253
19.0
123
325
1.5
460−3−60
414
506
9.7
62
325
0.8
575−3−60
518
633
7.4
50
325
0.6
IFM
TYPE
Std Static
Med Static
High Static
Std Static
Med Static
High Static
Std Static
Med Static
High Static
Std Static
Med Static
High Static
Max
WATTS
2120
2615
2615
2120
2615
2615
2120
2615
3775
2120
3775
3775
Max
AMP Draw
5.5
7.9
7.9
5.5
7.9
7.9
2.7
3.6
4.6
2.1
2.9
2.9
EFF at Full Load
80%
81%
81%
80%
81%
81%
80%
81%
81%
80%
81%
81%
FLA
5.2
7.5
7.5
5.2
7.5
7.5
2.6
3.4
4.4
2.0
2.8
2.8
EFF at Full Load
80%
81%
81%
80%
81%
81%
80%
81%
81%
80%
81%
81%
FLA
5.2
7.5
15.0
5.2
7.5
15.0
2.6
3.4
7.4
2.4
2.8
5.6
Table 31 – RGS091, 7.5 TONS − 1 Stage Cooling
VOLTAGE
RANGE
COMP (ea)
OFM (ea)
V−Ph−Hz
MIN
MAX
RLA
LRA
WATTS
FLA
208−3−60
187
253
25.0
164
325
1.5
230−3−60
187
253
25.0
164
325
1.5
460−3−60
414
506
12.2
100
325
0.8
575−3−60
518
633
9.0
78
325
0.6
IFM
TYPE
Std Static
Med Static
High Static
Std Static
Med Static
High Static
Std Static
Med Static
High Static
Std Static
Med Static
High Static
Max
WATTS
1448
2278
4400
1448
2278
4400
1448
2278
4400
1379
3775
4400
Max
AMP Draw
5.5
7.9
15.0
5.5
7.9
15.0
2.7
3.6
7.4
2.5
2.9
5.9
Table 32 – RGS090, 7.5 TONS − 2 Stage Cooling
VOLTAGE
RANGE
COMP (Cir 1)
COMP (Cir 2)
OFM (ea)
V−Ph−Hz
MIN
MAX
RLA
LRA
RLA
LRA
WATTS
FLA
208−3−60
187
253
13.6
83
13.6
83
325
1.5
230−3−60
187
253
13.6
83
13.6
83
325
1.5
460−3−60
414
506
6.1
41
6.1
41
325
0.8
575−3−60
518
633
4.2
33
4.2
33
325
0.6
509 31 3508 00
Specifications subject to change without notice.
IFM
TYPE
STD
MED
HIGH
STD
MED
HIGH
STD
MED
HIGH
STD
MED
HIGH
Max
WATTS
1448
2278
4400
1448
2278
4400
1448
2278
4400
1379
3775
4400
Max
AMP
Draw
5.5
7.9
15.0
5.5
7.9
15.0
2.7
3.6
7.4
2.5
2.9
5.9
EFF at
Full
Load
80%
81%
81%
80%
81%
81%
80%
81%
81%
80%
81%
81%
FLA
5.2
7.5
15.0
5.2
7.5
15.0
2.6
3.4
7.4
2.4
2.8
5.6
39
ELECTRICAL INFORMATION (cont.)
Table 33 – RGS101, 8.5 TONS − 1 Stage Cooling
VOLTAGE
RANGE
COMP (ea)
OFM (ea)
V−Ph−Hz
MIN
MAX
RLA
LRA
WATTS
FLA
208−3−60
187
253
29.5
195
325
1.5
230−3−60
187
253
29.5
195
325
1.5
460−3−60
414
506
14.7
95
325
0.8
575−3−60
518
633
12.2
80
325
0.6
IFM
TYPE
Std Static
Med Static
High Static
Std Static
Med Static
High Static
Std Static
Med Static
High Static
Std Static
Med Static
High Static
Max
WATTS
1448
2120
2694
1448
2120
2694
1448
2120
2694
1379
1390
3775
Max
AMP Draw
5.5
5.5
10.5
5.5
5.5
10.5
2.7
2.7
4.6
2.5
2.1
2.9
EFF at Full Load
80%
80%
80%
80%
80%
80%
80%
80%
80%
80%
80%
81%
FLA
5.2
5.2
10.0
5.2
5.2
10.0
2.6
2.6
4.4
2.4
2.0
2.8
Table 34 – RGS102, 8.5 TONS − 2 Stage Cooling
COMP (Cir 1)
VOLTAGE
RANGE
COMP (Cir 2)
OFM (ea)
V−Ph−Hz
MIN
MAX
RLA
LRA
RLA
LRA
WATTS
FLA
208−3−60
187
253
14.5
98
13.7
83
325
1.5
230−3−60
187
253
14.5
98
13.7
83
325
1.5
460−3−60
414
506
6.3
55
6.2
41
325
0.8
575−3−60
518
633
6.0
41
4.8
33
325
0.6
IFM
TYPE
STD
MED
HIGH
STD
MED
HIGH
STD
MED
HIGH
STD
MED
HIGH
Max
WATTS
1448
2120
2694
1448
2120
2694
1448
2120
2694
1379
1390
3775
Max
AMP
Draw
5.5
5.5
10.5
5.5
5.5
10.5
2.7
2.7
4.6
2.5
2.1
2.9
EFF at
Full
Load
80%
80%
80%
80%
80%
80%
80%
80%
80%
80%
80%
81%
FLA
5.2
5.2
10.0
5.2
5.2
10.0
2.6
2.6
4.4
2.4
2.0
2.8
Table 35 – RGS121, 10 TONS − 1 Stage Cooling
VOLTAGE
RANGE
COMP (ea)
OFM (ea)
V−Ph−Hz
MIN
MAX
RLA
LRA
WATTS
FLA
208−3−60
187
253
30.1
225
325
1.5
230−3−60
187
253
30.1
225
325
1.5
460−3−60
414
506
16.7
114
325
0.8
575−3−60
518
633
12.2
80
325
0.6
40
IFM
TYPE
Std Static
Med Static
High Static
Std Static
Med Static
High Static
Std Static
Med Static
High Static
Std Static
Med Static
High Static
Max
WATTS
2120
3775
4400
2120
3775
4400
2120
3775
4400
1390
3775
4400
Max
AMP Draw
5.5
10.5
15.0
5.5
10.5
15.0
2.7
4.6
7.4
2.1
2.9
5.9
Specifications subject to change without notice.
EFF at Full Load
80%
81%
81%
80%
81%
81%
80%
81%
81%
80%
81%
81%
FLA
5.2
10.0
15.0
5.2
10.0
15.0
2.6
4.4
7.4
2.0
2.8
5.6
509 31 3508 00
ELECTRICAL INFORMATION (cont.)
Table 36 – RGS120, 10 TONS − 2 Stage Cooling
VOLTAGE
RANGE
COMP (Cir 1)
COMP (Cir 2)
OFM (ea)
V−Ph−Hz
MIN
MAX
RLA
LRA
RLA
LRA
WATTS
FLA
208−3−60
187
253
15.6
110
15.9
110
325
1.5
230−3−60
187
253
15.6
110
15.9
110
325
1.5
460−3−60
414
506
7.7
52
7.7
52
325
0.8
575−3−60
518
633
5.8
39
5.7
39
325
0.6
IFM
TYPE
STD
MED
HIGH
STD
MED
HIGH
STD
MED
HIGH
STD
MED
HIGH
Max
WATTS
2120
3775
4400
2120
3775
4400
2120
3775
4400
1390
3775
4400
Max
AMP
Draw
5.5
10.5
15.0
5.5
10.5
15.0
2.7
4.6
7.4
2.1
2.9
5.9
EFF at
Full
Load
80%
81%
81%
80%
81%
81%
80%
81%
81%
80%
81%
81%
FLA
5.2
10.0
15.0
5.2
10.0
15.0
2.6
4.4
7.4
2.0
2.8
5.6
EFF at
Full
Load
81%
81%
81%
81%
81%
81%
81%
81%
81%
81%
81%
81%
FLA
7.5
10.0
15.0
7.5
10.0
15.0
3.4
4.4
7.4
2.8
2.8
5.6
Table 37 – RGS150, 12.5 TONS − 2 Stage Cooling
VOLTAGE
RANGE
COMP (Cir 1)
COMP (Cir 2)
OFM (ea)
V−Ph−Hz
MIN
MAX
RLA
LRA
RLA
LRA
WATTS
FLA
208−3−60
187
253
19.0
123
22.4
149
1288
6.2
230−3−60
187
253
19.0
123
22.4
149
1288
6.2
460−3−60
414
506
9.7
62
10.6
75
1288
3.1
575−3−60
518
633
7.4
50
7.7
54
1288
2.5
509 31 3508 00
Specifications subject to change without notice.
IFM
TYPE
STD
MED
HIGH
STD
MED
HIGH
STD
MED
HIGH
STD
MED
HIGH
Max
WATTS
2615
3775
4400
2615
3775
4400
2615
3775
4400
3775
3775
4400
Max
AMP
Draw
7.9
10.5
15.0
7.9
10.5
15.0
3.6
4.6
7.4
2.9
2.9
5.9
41
Table 38 – MCA/MOCP DETERMINATION NO C.O. OR UNPWRD C.O.
Unit
NOM.
V−Ph−Hz
208/230−3−60
RGS072
460−3−60
575−3−60
208/230−3−60
RGS091
460−3−60
575−3−60
208/230−3−60
RGS090
460−3−60
575−3−60
208/230−3−60
RGS101
460−3−60
575−3−60
208/230−3−60
RGS102
460−3−60
575−3−60
IFM
TYPE
STD
MED
HIGH
STD
MED
HIGH
STD
MED
HIGH
STD
MED
HIGH
STD
MED
HIGH
STD
MED
HIGH
STD
MED
HIGH
STD
MED
HIGH
STD
MED
HIGH
STD
MED
HIGH
STD
MED
HIGH
STD
MED
HIGH
STD
MED
HIGH
STD
MED
HIGH
STD
MED
HIGH
Combustion
Fan Motor
FLA
Power
Exhaust
FLA
0.48
1.9
0.25
1.0
0.24
1.9
0.48
3.8
0.25
1.8
0.24
3.8
0.48
3.8
0.25
1.8
0.24
3.8
0.48
3.8
0.25
1.8
0.24
3.8
0.48
3.8
0.25
1.8
0.24
3.8
NO C.O. or UNPWRD C.O.
NO P.E.
w/ P.E. (pwrd fr/ unit)
DISC. SIZE
DISC. SIZE
FLA
LRA
FLA
LRA
MCA MOCP
MCA
MOCP
30.5
45.0
30
157
32.4
50.0
32
159
32.8
50.0
32
183
34.7
50.0
34
185
32.8
50.0
32
183
34.7
50.0
34
185
15.5
25.0
15
79
16.5
25.0
16
80
16.3
25.0
16
92
17.3
25.0
17
93
17.3
25.0
17
101
18.3
25.0
18
102
11.9
15.0
12
63
13.8
20.0
14
65
12.7
20.0
12
74
14.6
20.0
15
76
12.7
20.0
12
74
14.6
20.0
15
76
39.5
60
38
191
43.3
60
43
195
41.8
60
41
228
45.6
60
45
232
49.3
60
49
254
53.1
60
54
258
19.5
30
19
113
21.3
30
21
115
20.3
30
20
132
22.1
30
22
134
24.3
30
24
145
26.1
30
26
147
14.9
20
14
89
18.7
25
19
93
15.3
20
15
104
19.1
25
19
108
18.1
25
18
118
21.9
30
23
122
38.8
50
41
193
42.6
50
45
197
41.1
50
43
230
44.9
50
48
234
49.0
60
52
256
52.8
60
56
260
17.9
20
19
95
19.7
25
21
97
18.7
25
20
114
20.5
25
22
116
23.1
30
24
127
24.9
30
26
129
13.1
15
14
77
16.9
20
18
81
13.5
15
14
92
17.3
20
19
96
16.6
20
17
106
20.4
25
22
110
45.1
60
43
222
48.9
60
48
226
45.1
60
43
233
48.9
60
48
237
49.9
60
49
276
53.7
80
53
280
22.6
30
22
108
24.4
30
24
110
22.6
30
22
114
24.4
30
24
116
24.4
30
24
136
26.2
30
26
138
18.9
30
18
91
22.7
30
23
95
18.5
30
18
95
22.3
30
22
99
19.3
30
19
106
23.1
30
23
110
40.0
50
42
208
43.8
50
46
212
40.0
50
42
219
43.8
50
46
223
44.8
50
47
262
48.6
60
52
266
18.3
20
19
109
20.1
25
21
111
18.3
20
19
115
20.1
25
21
117
20.1
25
21
137
21.9
25
23
139
15.9
20
17
85
19.7
25
21
89
15.5
20
16
89
19.3
25
20
93
16.3
20
17
100
20.1
25
21
104
See notes on next page.
42
Specifications subject to change without notice.
509 31 3508 00
Table 38 (cont.) MCA/MOCP DETERMINATION NO C.O. OR UNPWRD C.O.
Unit
NOM.
V−Ph−Hz
208/230−3−60
RGS121
460−3−60
575−3−60
208/230−3−60
RGS120
460−3−60
575−3−60
208/230−3−60
RGS150
460−3−60
575−3−60
LEGEND:
CO
DISC
FLA
IFM
LRA
MCA
MOCP
PE
UNPWRD CO
NOTES:
IFM
TYPE
STD
MED
HIGH
STD
MED
HIGH
STD
MED
HIGH
STD
MED
HIGH
STD
MED
HIGH
STD
MED
HIGH
STD
MED
HIGH
STD
MED
HIGH
STD
MED
HIGH
Combustion
Fan Motor
FLA
Power
Exhaust
FLA
0.48
3.8
0.25
1.8
0.24
3.8
0.48
3.8
0.25
1.8
0.24
3.8
0.48
3.8
0.25
1.8
0.24
3.8
NO C.O. or UNPWRD C.O.
NO P.E.
DISC. SIZE
FLA
LRA
MCA MOCP
45.8
60
44
263
50.6
60
50
306
55.6
80
55
315
25.1
30
24
133
26.9
40
26
155
29.9
45
30
159
18.5
30
18
95
19.3
30
19
106
22.1
30
22
120
43.7
50
46
258
48.5
60
51
301
53.5
60
57
310
21.5
25
23
123
23.3
30
25
145
26.3
30
28
149
16.2
20
17
93
17.0
20
18
104
19.8
25
21
118
60.7
80
63
360
63.2
80
66
377
68.2
80
72
386
29.5
40
31
181
30.5
40
32
190
33.5
40
35
194
22.3
30
23
142
22.3
30
23
142
25.1
30
27
156
NO C.O. or UNPWRD C.O.
w/ P.E. (pwrd fr/ unit)
DISC. SIZE
FLA
LRA
MCA MOCP
49.6
60
48
267
54.4
80
54
310
59.4
80
60
319
26.9
40
26
135
28.7
45
28
157
31.7
45
32
161
22.3
30
22
99
23.1
30
23
110
25.9
30
26
124
47.5
60
50
262
52.3
60
56
305
57.3
70
61
314
23.3
30
25
125
25.1
30
27
147
28.1
35
30
151
20.0
25
21
97
20.8
25
22
108
23.6
30
25
122
64.5
80
68
364
67.0
80
71
381
72.0
80
76
390
31.3
40
33
183
32.3
40
34
192
35.3
45
37
196
26.1
30
28
146
26.1
30
28
146
28.9
35
31
100
Example: Supply voltage is 230-3-60
−
−
−
−
−
−
−
−
−
Convenient outlet
Disconnect
Full load amps
Indoor fan motor
Locked rotor amps
Minimum circuit amps
Maximum over current protection
Power exhaust
Unpowered convenient outlet
AB = 224 v
BC = 231 v
AC = 226 v
(224 + 231 + 226)
Average Voltage =
681
=
3
1. In compliance with NEC requirements for multimotor
and combination load equipment (refer to NEC Articles
430 and 440), the overcurrent protective device for the
unit shall be fuse or HACR breaker. Canadian units may
be fuse or circuit breaker.
2. Unbalanced 3-Phase Supply Voltage
Never operate a motor where a phase imbalance in
supply voltage is greater than 2%. Use the following
formula to determine the percentage of voltage imbalance.
=
3
227
Determine maximum deviation from average voltage.
(AB) 227 – 224 = 3 v
(BC) 231 – 227 = 4 v
(AC) 227 – 226 = 1 v
Maximum deviation is 4 v.
Determine percent of voltage imbalance.
4
% Voltage Imbalance
= 100 x
227
= 1.76%
max voltage deviation from average voltage
% Voltage Imbalance
= 100 x
509 31 3508 00
average voltage
This amount of phase imbalance is satisfactory as it is below the maximum allowable 2%.
IMPORTANT: If the supply voltage phase imbalance is more than 2%,
contact your local electric utility company immediately.
Specifications subject to change without notice.
43
Fig. 8 Typical Power Diagram − 1 Stage Cooling
44
Specifications subject to change without notice.
509 31 3508 00
Fig. 9 Typical Power Diagram − 2 Stage Cooling
509 31 3508 00
Specifications subject to change without notice.
45
Fig.10 Typical Wiring Diagram − 1 Stage Cooling
46
Specifications subject to change without notice.
509 31 3508 00
Fig. 11 Typical Wiring Diagram − 2 Stage Cooling
509 31 3508 00
Specifications subject to change without notice.
47
SEQUENCE OF OPERATION
General
Units with an Economizer
The sequence below describes the sequence of operation for an
electro−mechanical unit with and without a factory installed
economizer. For information regarding a direct digital controller,
see the start−up, operations, and troubleshooting manual for the
applicable controller.
Cooling —
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.
The outdoor−fan motor runs continuously while unit is cooling.
Heating
NOTE: RGS 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 and the induced−draft motor is running. 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.
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.
On units with 2 stages of heat, when additional heat is 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.
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.
48
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
economizer control to provide a 50F (10C) to 55F (13C)
mixed−air temperature into the zone. As the mixed air
temperature fluctuates above 55F (13C)or below 50F (10C)
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 45F (7C), 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 48F (9C). The power exhaust fans will be energized
and de−energized, if installed, as the outdoor−air damper opens
and closes.
If field−installed accessory CO2 sensors are connected to the
economizer control, a demand controlled ventilation strategy will
begin to operate. As the CO2 level in the zone increases above
the CO2 set point, 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 economizer 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 economizer 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 economizer damper to the minimum position.
On the initial power to the economizer control, it will 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 set point at 50F (10C) to 55F (13C).
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 set point. The
economizer damper will be open at maximum position.
economizer operation is limited to a single compressor.
Heating
The sequence of operation for the heating is the same as an 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.
Specifications subject to change without notice.
509 31 3508 00
GUIDE SPECIFICATIONS − RGS072−150
Note about this specification:
GAS HEAT PACKAGED ROOFTOP
HVAC Guide Specifications
Size Range: 6 to 12.5 Nominal Tons
Section
Description
23 06 80
Schedules for Decentralized HVAC Equipment
23 06 80.13
Decentralized Unitary HVAC Equipment Schedule
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
Instrumentation and Control Devices for HVAC
23 09 13.23
Sensors and Transmitters
23 09 13.23.A, Thermostats
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. must include capability for occupancy scheduling.
23 09 33
Electric and Electronic Control System for HVAC
23 09 33.13
Decentralized, Rooftop Units:
23 09 33.13.A. General:
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. Unit shall be include self−contained low−voltage control circuit protected by a fuse on the 24−v transformer
side with a resettable circuit breaker.
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.
2. Low−pressure switch.
a. Low pressure switch shall use different color wire than the high pressure switch. The purpose is to assist
the installer and service person to correctly wire and or troubleshoot the rooftop unit.
3. High−pressure switch.
a. High pressure switch shall use different color wire than the low pressure switch. The purpose is to assist
the installer and service person to correctly wire and or troubleshoot the rooftop unit.
4. Automatic reset, motor thermal overload protector.
509 31 3508 00
Specifications subject to change without notice.
49
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
Sequence of Operations for HVAC Controls
23 09 93.13
23 09 93.13
23 40 13
Decentralized, Rooftop Units:
INSERT SEQUENCE OF OPERATION
Panel Air Filters
23 40 13.13
Decentralized, Rooftop Units:
23 40 13.13.A. Standard filter section shall
1. Shall consist of factory−installed, low velocity, throwaway 2−in. thick fiberglass filters of commercially available
sizes.
2. Unit shall use only one filter size. Multiple sizes are not acceptable.
3. Filter face velocity shall not exceed 365 fpm at nominal airflows.
4. 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
Self−Contained Air Conditioners
23 81 19.13
Small−Capacity Self−Contained Air Conditioners (RGS072−150)
23 81 19.13.A. General
1. Outdoor, rooftop mounted, electrically controlled, heating and cooling unit utilizing a(n) hermetic scroll compressor(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 safe, R−410A 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 90.1−2004 minimum efficiency requirements.
2. 3 phase units are Energy Star qualified.
3. Unit shall be rated in accordance with ARI Standards 210 and 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 9001:2000, and shall be manufactured in a facility registered
by ISO 9001:2000.
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
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.
50
Specifications subject to change without notice.
509 31 3508 00
23 81 19.13.F. Operating Characteristics
1. Unit shall be capable of starting and running at 115F (46C) ambient outdoor temperature, meeting maximum load criteria of ARI Standard 210/240 or 360 at ± 10% voltage.
2. Compressor with standard controls shall be capable of operation down to 40F (4C), ambient outdoor temperatures. Accessory winter start kit is necessary if mechanically cooling at ambient temperatures below 40F
(4C) to 20F (−7C). Below 20F (−7C) an accessory Motormaster low ambient control is required and the
outdoor fan motor needs to be changed to a ball−bearing speed control motor design..
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
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 (.076mm) minimum, gloss (per ASTM
D523, 60F (16C): 60, Hardness: H−2H Pencil hardness.
3. Evaporator fan compartment interior cabinet insulation shall conform to ARI Standards 210 or 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 2 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 a 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 end of the drain pan.
Connection shall be made per manufacturer’s recommendations.
7. Top panel:
a. Shall be a single piece top panel.
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
(horizontal plane).
b. Thru−the−base capability
i. Standard unit shall have a thru−the−base gas−line location using a raised, embossed portion of the unit
basepan.
ii. Water−tight connection method must be used for thru−the−base gas connections.
iii. 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
i. Standard unit shall have a thru−the−base electrical location(s) using a raised, embossed portion of the
unit basepan.
ii. Optional, factory−approved, water−tight connection method must be used for thru−the−base electrical
connections.
iii. No basepan penetration, other than those authorized by the manufacturer, is permitted.
10. Component access panels (standard)
509 31 3508 00
Specifications subject to change without notice.
51
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 compressors 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 composite 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
allowed.
b. Shall incorporate a direct−spark ignition system and redundant main gas valve.
c. Heat exchanger design shall allow combustion process condensate to gravity drain; maintenance to drain
the gas heat exchanger shall not be required.
d. 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 Light Emitting Diode (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 continuous 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 conditions.
d. Each heat exchanger tube shall contain multiple dimples for increased heating effectiveness.
4. 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.
23 81 19.13.J. Coils
1. Standard Aluminum/Copper Coils:
a. Standard evaporator and condenser coils shall have aluminum lanced plate fins mechanically bonded to
seamless internally grooved copper tubes with all joints brazed.
b. Evaporator and condenser coils shall be leak tested to 150 psig, pressure tested to 400 psig, and qualified
to UL 1995 burst test at 2,200 psi.
2. Optional Copper−fin 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.
23 81 19.13.K. Refrigerant Components
1. Refrigerant circuit shall include the following control, safety, and maintenance features:
a. Fixed orifice metering system shall prevent mal−distribution of two−phase refrigerant by including multiple
fixed orifice devices in each refrigeration circuit. Each orifice is to be optimized to the coil circuit it serves.
b. Refrigerant filter drier.
c. Service gauge connections on suction and discharge lines.
52
Specifications subject to change without notice.
509 31 3508 00
23 81
23 81
23 81
23 81
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 (3 to 6 ton
models only).
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
reading with the compressor access panel on.
d. The plug shall be made of a leak proof, UV−resistant, composite material.
3. Compressors
a. Unit shall use one fully hermetic, scroll compressor for each independent refrigeration circuit.
b. Compressor motors shall be cooled by refrigerant gas passing through motor windings.
c. Compressors shall be internally protected from high discharge temperature conditions using a Thermal
Overload Disk (TOD) installed at the fixed scroll discharge has outlet on 072−091 sizes; and Advanced
Scroll Temperature Protection on 101−121 sizes.
d. Compressors shall be protected from an over−temperature and over−amperage conditions by an internal,
motor overload device.
e. Compressor shall be factory mounted on rubber grommets.
f. Compressor motors shall have internal line break thermal and current overload protection.
g. Crankcase heaters shall not be required for normal operating range.
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. Filter face velocity shall not exceed 320 fpm at nominal airflows.
5. Filters shall be standard, commercially available sizes.
6. Only one size filter per unit is allowed.
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.
c. Shall have a maximum continuous bhp rating for continuous duty operation; no safety factors above that
rating shall be required.
2. 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.
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. Shaft−up designs including those with “rain−slinger devices” shall not be
allowed.
2. Condenser Fans shall:
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.
19.13.O. Special Features
1. Integrated Economizers:
a. Integrated, gear−driven parallel modulating blade design type capable of simultaneous economizer and
compressor operation.
b. Independent modules for vertical or horizontal return configurations shall be available. Vertical return modules shall be available as a factory installed option.
509 31 3508 00
Specifications subject to change without notice.
53
c. Damper blades shall be galvanized steel with composite gears. Plastic or composite blades on intake or
return shall not be acceptable.
d. Shall include all hardware and controls to provide free cooling with outdoor air when temperature and/or
humidity 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 set point shall
be adjustable and shall range from 40 to 100F / 4 to 38C. Additional sensor options shall be available as
accessories.
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 set point.
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 35F (2C) and close closes at 50F (10C).
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.
r. Economizer uses a mixed air thermister (MAT) located on indoor fan housing to modulate outdoor air
dampers and return air dampers to control to a 55F (13C) discharge air temperature
2. Two−Position Damper
a. Damper shall be a Two−Position Damper. Damper travel shall be from the full closed position to the field
adjustable %−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 economizer 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. Design shall incorporate inherent barometric relief capabilities for barometric relief of rooftop unit return air.
h. The damper actuator shall plug into the rooftop unit’s wiring harness plug. No hard wiring shall be required.
i. Outside air hood shall include aluminum water entrainment filter
3. Manual damper
a. Manual damper field installed accessory package shall consist of damper, air inlet screen, and rain hood
which can be preset to admit up to 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 90F (32C) and 110F (43C) at outdoor ambient temperatures down to −20F (−29C).
5. Liquid Propane (LP) 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 either hood style or louvered.
8. Flue Discharge Deflector:
54
Specifications subject to change without notice.
509 31 3508 00
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.
9. 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. Maximum of four connection locations per unit.
10. Fan/Filter Status Switch:
a. Switch shall provide status of indoor evaporator fan (ON/OFF) or filter (CLEAN/DIRTY).
b. Status shall be displayed with an indicator light at the thermostat.
11. 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.
12. Roof Curbs (Vertical):
a. Full perimeter roof curb with exhaust capability providing separate airstreams 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.
13. High−Altitude Gas Conversion Kit:
a. Package shall contain all the necessary hardware and instructions to convert a standard natural gas unit to
operate from 2000−7000 ft (610 to 2134m) elevation with natural gas or from 0−7000 ft 90−2134m) elevation with liquefied propane.
14. High−Static Indoor Fan Motor(s) and Drive(s):
a. Medium and High−static motor(s) and drive(s) shall be factory−installed to provide additional performance
range.
15. Condenser Coil Grille:
a. The grille protects the condenser coil from damage by large objects without increasing unit clearances.
16. 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.
17. Return Air Enthalpy Sensor:
a. The return air enthalpy sensor shall be used in conjunction with an outdoor air enthalpy sensor to provide
differential enthalpy control.
18. 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. The set point shall have adjustment capability.
19. Winter start kit
a. Shall contain a bypass device around the low pressure switch.
b. Shall be required when mechanical cooling below an outdoor ambient of 40F (4C) to 25F (−4C).
c. Shall not be required to operate an equipped economizer when below an outdoor ambient of 40F (4C).
20. Barometric relief
a. Shall include damper, seals, hard−ware, and hoods to relieve excess building pressure.
b. Damper shall gravity−close upon unit shutdown.
21. Time Guard
a. Shall prevent compressor short cycling by providing a 5−minute delay (±2 minutes) before restarting a compressor after shutdown for any reason.
b. One device shall be required per compressor.
22. Phase Monitor Control
a. Field installed accessory that provides phase loss / phase reversal protection.
b. Mounts in unit control box and connects to unit main terminal board.
International Comfort Products, LLC
Lewisburg, Tennessee 37091 USA
www.GoArcoaire.com
509 31 3508 00
Specifications subject to change without notice.
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