RAH072−120 RAH036−060 Use of the AHRI Certified TM Mark in- dicates a manufacturer’s participation in the program. For verification of certi- fication for individual products, go to www.ahridirectory.org . 513 21 3607 00 3/30/15 HIGH EFFICIENCY PACKAGE ELECTRIC COOLING, R− 410A SINGLE PACKAGE ROOFTOP 3 − 12.5 TONS (1 & 3− Phase) BUILT TO LAST, EASY TO INSTALL AND SERVICE One−piece, high efficiency electric cooling with a low profile, prewired, tested, and charged at the factory Field Convertible from vertical to horizontal airflow on all models. No special kit required on 036−120 models. Field accessory supply duct kit required for 150 size model only . Full perimeter base rail with built-in rigging adapters and fork truck slots Pre−painted exterior panels & primer−coated interior panels tested to 500 hours salt spray protection Fully insulated cabinet Single-stage cooling capacity control on 036−072 models, two−stage on 090−150 models Single scroll compressor on 036−072 models, dual scroll compressors on 090−150 models with internal line−break overload protection Two inch disposable fiberglass type return air filters in dedicated rack with tool−less filter access door All units have a high and low pressure switches Refrigerant circuits contain a liquid line filter drier to trap dirt and moisture 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 Direct drive high efficiency ECM blower motors on 036−060 single phase models Belt drive evaporator−fan motor and pulley combinations available on all 3 phase models Access panels with easy grip handles provide quick and easy access to the blower and blower motor, control box, and compressor. “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 125F (52C) and down to 35F ( −2C ) using winter start kit TXV refrigerant 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 Standard, medium and high static fan motor options available Provisions for thru−the−bottom power entry capability Single point electrical connections WARRANTY 5 Year compressor limited warranty 1 Year parts limited warranty UNIT PERFORMANCE DATA − ONE STAGE COOLING UNIT Nom. Tons COOLING Unit Dimensions H x W x L in [mm] Unit Weight lb. [kg] Net Cap. (Btuh) SEER EER RAH036*0XA0AAA 3 36,000 15.0 12.5 33−3/8 x 46−3/4 x 74−3/8 (847 x 1187 x 1888) 458 (208) RAH048*0XA0AAA 4 48,500 15.6 13.0 41−3/8 x 46−3/4 x 74−3/8 (1051 x 1187 x 1888) 545 (207) RAH060*0XA0AAA 5 57,500 15.2 12.5 41−3/8 x 46−3/4 x 74−3/8 (1051 x 1187 x 1888) 550 (249) RAH072*0AA0AAA 6 73,000 N/A 12.2 41−1/4 x 59−1/2 x 88−1/8 (1048 x 1510 x 2238) 715 (324) UNIT PERFORMANCE DATA − TWO STAGE COOLING UNIT Nom. Tons COOLING Unit Dimensions H x W x L in [mm] Unit Weight lb. [kg] Net Cap. (Btuh) Total Pwr (kW) EER RAH090*0AA0AAA 71/2 89,000 7.3 12.2 49−3/8 x 59−1/2 x 88−1/8 (1253 x 1510 x 2238) 860 (390) RAH102*0AA0AAA 81/2 97,000 8.0 12.2 49−3/8 x 59−1/2 x 88−1/8 (1253 x 1510 x 2238) 860 (390) RAH110*0AA0AAA 10 111,00 9.3 12.0 49−3/8 x 59−1/2 x 88−1/8 (1253 x 1510 x 2238) 1025 (465) RAH120*0AA0AAA 10 115,000 9.8 11.7 49−3/8 x 59−1/2 x 88−1/8 (1253 x 1510 x 2238) 1025 (465) RAH150*0AA0AAA 12.5 146,000 11.8 12.4 57−3/8 x 63−3/8 x 115−7/8 (1456 x 1609 x 2942) 1360 (617) * Indicates Unit voltage: K = 208/230−1−60, H = 208/230−3−60, L = 460−3−60, S = 575−3−60 RAH Product Specifications
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RAH072−120
RAH036−060
Use of the AHRI Certified TM Mark in-dicates a manufacturer’s participationin the program. For verification of certi-fication for individual products, go towww.ahridirectory.org .
513 21 3607 00 3/30/15
HIGH EFFICIENCY PACKAGE ELECTRIC COOLING, R−410A SINGLE PACKAGE ROOFTOP 3 − 12.5 TONS (1 & 3−Phase)BUILT TO LAST, EASY TO INSTALL AND SERVICE
One−piece, high efficiency electric cooling with a low profile, prewired, tested, and charged at the factory Field Convertible from vertical to horizontal airflow on all models. No special kit required on 036−120 models.
Field accessory supply duct kit required for 150 size model only. Full perimeter base rail with built-in rigging adapters and fork truck slots Pre−painted exterior panels & primer−coated interior panels tested to 500 hours salt spray protection Fully insulated cabinet Single-stage cooling capacity control on 036−072 models, two−stage on 090−150 models Single scroll compressor on 036−072 models, dual scroll compressors on 090−150 models with
internal line−break overload protection Two inch disposable fiberglass type return air filters in dedicated rack with tool−less filter access door All units have a high and low pressure switches Refrigerant circuits contain a liquid line filter drier to trap dirt and moisture 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 Direct drive high efficiency ECM blower motors on 036−060 single phase models Belt drive evaporator−fan motor and pulley combinations available on all 3 phase models Access panels with easy grip handles provide quick and easy access to the blower and blower
motor, control box, and compressor. “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 125F (52C) and
down to 35F ( −2C ) using winter start kit TXV refrigerant 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 Standard, medium and high static fan motor options available Provisions for thru−the−bottom power entry capability Single point electrical connections
WARRANTY 5 Year compressor limited warranty 1 Year parts limited warranty
UNIT PERFORMANCE DATA − ONE STAGE COOLING
UNITNom.Tons
COOLING Unit DimensionsH x W x Lin [mm]
UnitWeightlb. [kg]
Net Cap.(Btuh) SEER EER
RAH036*0XA0AAA 3 36,000 15.0 12.5 33−3/8 x 46−3/4 x 74−3/8 (847 x 1187 x 1888) 458 (208)RAH048*0XA0AAA 4 48,500 15.6 13.0 41−3/8 x 46−3/4 x 74−3/8 (1051 x 1187 x 1888) 545 (207)RAH060*0XA0AAA 5 57,500 15.2 12.5 41−3/8 x 46−3/4 x 74−3/8 (1051 x 1187 x 1888) 550 (249)RAH072*0AA0AAA 6 73,000 N/A 12.2 41−1/4 x 59−1/2 x 88−1/8 (1048 x 1510 x 2238) 715 (324)
UNIT PERFORMANCE DATA − TWO STAGE COOLING
UNITNom.Tons
COOLING Unit DimensionsH x W x Lin [mm]
UnitWeightlb. [kg]
Net Cap.(Btuh)
TotalPwr (kW) EER
RAH090*0AA0AAA 71/2 89,000 7.3 12.2 49−3/8 x 59−1/2 x 88−1/8 (1253 x 1510 x 2238) 860 (390)RAH102*0AA0AAA 81/2 97,000 8.0 12.2 49−3/8 x 59−1/2 x 88−1/8 (1253 x 1510 x 2238) 860 (390)RAH110*0AA0AAA 10 111,00 9.3 12.0 49−3/8 x 59−1/2 x 88−1/8 (1253 x 1510 x 2238) 1025 (465)RAH120*0AA0AAA 10 115,000 9.8 11.7 49−3/8 x 59−1/2 x 88−1/8 (1253 x 1510 x 2238) 1025 (465)RAH150*0AA0AAA 12.5 146,000 11.8 12.4 57−3/8 x 63−3/8 x 115−7/8 (1456 x 1609 x 2942) 1360 (617)
* Indicates Unit voltage: K = 208/230−1−60, H = 208/230−3−60, L = 460−3−60, S = 575−3−60
RAHProduct Specifications
MODEL NOMENCLATUREMODEL SERIES R A H 0 9 0 H 0 A A 0 A A A
Position Number 1 2 3 4 5 6 7 8 9 10 11 12 13 14R = Rooftop
Humidity Control Hot Gas Re−Heat Dehumidification System1 XCondenser Protection Condenser coil hail guard (louvered design)1 X X
Controls
Thermostats, temperature sensors, and subbases XSmoke detector (supply and/or return air) XTime Guard II compressor delay control circuit XPhase Monitor X
Economizers& Outdoor Air
Dampers
EconoMi$er IV for electro−mechanical controls − Non FDD (Standard airleak damper models)1 X X
EconoMi$er2 for DDC controls (Standard and Ultra Low Leak air dampermodels)1, 10 X X
Motorized 2 position outdoor−air damper1 X XManual outdoor−air damper (25% and 50%) X XBarometric relief2 X XPower exhaust − prop design XEconoMi$erX for electro−mechanical controls, complies with FDD.(Standard and Ultra Low Leak air damper models)1 X X
Economizer Sensors & IAQDevices
Single dry bulb temperature sensors3 X XDifferential dry bulb temperature sensors3 XSingle enthalpy sensors3 X XDifferential enthalpy sensors3 XCO2 sensor (wall, duct, or unit mounted)3 X X
Electric HeatElectric Resistance Heaters X XSingle Point Kit X X
Indoor Motor& Drive
Multiple motor and drive packages X2−Speed Indoor Fan Motor system w/VFD controller (2−stage cool onlywith electrical mechanical) X
Display Kit for 2−speed indoor fan motor system with VFD X
Low AmbientControl
Winter start kit4 XMotormaster head pressure controller to −20�F (−29�C)4 XCooling Low Ambient Controller to 0�F/−18�C (except 110 size)4 X
PowerOptions
Convenience outlet (unpowered) XNon−fused disconnect7,8 X
Roof CurbsRoof curb 14−in (356mm) XRoof curb 24−in (610mm) X
NOTES: 1. Not available as factory installed option on single phase (208/230−1−60) models. Use field installed accessory where available.2. Included with economizer.3. Sensors used to optimize economizer performance.4. See application data for assistance.5. HACR circuit breaker cannot be used when unit MOCP electrical rating exceeds:
036−120 sizes − 208/230−1−60 and 208/230−3−60 = 100 amps, 460−3−60 = 90 amps, 575−3−60 = 70 amps.150 size − 208/230−3−60 = 200 amps, 460−3−60 = 90 amps, 575−3−60 = 80 amps.HACR circuit breaker on 575 volt can only be used on Wye power supply. Delta power supply is prohibited.
6. Non−fused disconnect switch (036−120 sizes) cannot be used when unit electrical rating exceeds: Without factory installed electric heat: 208/230−1−60 and 208/230−3−60 = 80 amps (FLA), 460−3−60 and 575−3−60 = 80 amps (FLA). With factory installed electric heat: 208/230−1−60 and 208/230−3−60 = 100 amps (FLA), 460−3−60 and 575−3−60 = 80 amps (FLA).Non−fused disconnect switch (150 size) cannot be used when unit electrical rating exceeds: Without factory installed electric heat: 208/230−3−60 = 115 amps (MCA), 460−3−60 and 575−3−60 = 100 amps (FLA). With factory installed electric heat: 208/230/2/60 = 200 amps (FLA), 460−3−60 and 575−3−60 = 100 amps (FLA)
7. If field installing electric heaters, Single Point Kits are required: On sizes 036, 048 and 060 − Single Point Kit CRSINGLE037A00 is required.On size 072 − Single Point Kit CRSINGLE042A00 is required.On sizes 090, 102 and 120 − Single Point Kit CRSINGLE047A00 is required.
8. FDD − (Fault Detection and Diagnostic) capability per California Title 24 section 120.2.
Specifications subject to change without notice. 3513 21 3607 00
FACTORY OPTIONS AND/OR ACCESSORIESEconomizer (dry−bulb or enthalpy)Economizers save energy, money and improvecomfort levels in the conditioned space. They bring infresh, outside air for ventilation; and provide cooloutside air to cool your building. This also is thepreferred method of low ambient cooling. Whenintegrated with CO2 sensors, economizers can provideeven more savings by coupling the ventilation air toonly that amount required based on space occupancy.Economizers are available, installed and tested by thefactory, with either enthalpy or temperature dry−bulbinputs. There are also models for electromechanical,direct digital controllers and single speed fan or2−speed indoor fan motors. Additional sensors areavailable as accessories to optimize the economizer.Economizers include gravity controlled barometricrelief that helps equalize building pressure andambient air pressures. This can be a cost effectivesolution to prevent building pressurization.Economizers are available in Ultra Low Leak andstandard low leak versions.CO2 SensorImproves productivity and saves money by workingwith the economizer to intake only the correct amountof outside air for ventilation. As occupants fill yourbuilding, the CO2 sensor detects their presencethrough increasing CO2 levels, and opens theeconomizer appropriately.When the occupants leave, the CO2 levels decrease,and the sensor appropriately closes the economizer.This intelligent control of the ventilation air, calledDemand Control Ventilation (DCV) reduces the overallload on the rooftop, saving money.Smoke DetectorsTrust the experts. Smoke detectors make yourapplication safer and your job easier. ICP smokedetectors immediately shut down the rooftop unit whensmoke is detected. They are available, installed by thefactory, for supply air, return air, or both.Louvered Hail GuardsSleek, louvered panels protect the condenser coil fromhail damage, foreign objects, and incidental contact.Convenience Outlet (un−powered)Reduce service and/or installation costs by including aconvenience outlet in your specification. ICP will installthis service feature at our factory. Provides aconvenient, 15 amp, 115v GFCI receptacle with “Wetin Use” cover. The “unpowered” option is to bepowered from a separate 115/120v power source.Non−fused DisconnectThis OSHA−compliant, factory−installed, safety switchallows a service technician to locally secure power tothe rooftop.If field installing electric heat with factory−installednon−fused disconnect switch, a Single Point Kit isrequired. See details on page 5, Note 8.
Power ExhaustSuperior internal building pressure control. Thisfield−installed accessory may eliminate the need forcostly, external pressure control fans.Time Guard II Control CircuitThis accessory protects your compressor bypreventing short−cycling in the event of some otherfailure, prevents the compressor from restarting for 30seconds after stopping. Not required with authorizedcommercial thermostats.
Motorized 2−Position DamperThe new ICP 2−position, motorized outdoor airdamper admits up to 100% outside air. Using reliable,gear−driven technology, the 2−position damper opensto allow ventilation air and closes when the rooftopstops, stopping unwanted infiltration. Not availablewith 2−speed indoor fan motor models.Manual OA DamperManual outdoor air dampers are an economical way tobring in ventilation air. The dampers are available in25% and 50% versions. Not available with 2−speedindoor fan motor models.Optional Hot Gas Re−HeatDehumidification SystemICP’s Hot Gas Re−Heat dehumidification system is anall−inclusive factory installed option that can beordered with any RAH036−150 rooftop unit. Thissystem expands the envelope of operation of ICP’srooftop products to provide unprecedented flexibility tomeet year round comfort conditions.
Optional Hot Gas Re−HeatDehumidification System (cont.)The Hot Gas Re−Heat dehumidification system hasthe industry’s only dual dehumidification mode setting.The Hot Gas Re−Heat system includes two newmodes of operation.The RAH036−150 rooftop coupled with the Hot GasRe−Heat system is capable of operating in normaldesign cooling mode, subcooling mode, and hot gasreheat mode. Normal design cooling mode is when theunit will operate under its normal sequence ofoperation by cycling compressors to maintain comfortconditions.Subcooling mode will operate to satisfy part load typeconditions when the space requires combined sensibleand a higher proportion of latent load control. Hot GasReheat mode will operate when outdoor temperaturesdiminish and the need for latent capacity is requiredfor sole humidity control. Hot Gas Reheat mode willprovide neutral air for maximum dehumidificationoperation.
Specifications subject to change without notice.4 513 21 3607 00
FACTORY OPTIONS AND/OR ACCESSORIES (cont.)2−Speed Indoor Fan Motor Indoor FanSpeed SystemICP’s 2−speed indoor fan motor system saves energyand installation time by utilizing a Variable FrequencyDrive (VFD) to automatically adjust the indoor fanmotor speed in sequence with the units coolingoperation. Per ASHRAE 90.1 standard section6.4.3.10.b, during the first stage of cooling operationthe VFD will adjust the fan motor to provide 2/3rd ofthe total cfm established for the unit. When a call forthe second stage of cooling is required, the VFD willallow the total cfm for the unit established (100%).During the heating mode the VFD will allow totaldesign cfm (100%) operation and during the ventilationmode the VFD will allow operation to 2/3rd of totalcfm.Compared to single speed indoor fan motor systems,ICP’s 2−speed indoor fan motor system can savesubstantial energy, 25%+*, versus single speed indoorfan motor systems.The VFD used in ICP’s 2−speed indoor fan motorsystem has soft start capabilities to slowly ramp up thespeeds, thus eliminating any high inrush air volumeduring initial start−up. It also has internal over currentprotection for the fan motor and a field installed displaykit that allows adjustment and in depth diagnostics ofthe VFD.This 2−speed indoor fan motor system is available onmodels with 2−stage cooling operation with electricalmechanical controls. Both space sensor andconventional thermostats controls can be used toprovide accurate control in any application.The 2−speed indoor fan motor system is very flexiblefor initial fan performance set up and adjustment. Thestandard factory shipped VFD is pre−programmed toautomatically stage the fan speed between the firstand second stage of cooling. The unit fan performancestatic pressure and cfm can be easily adjusted usingthe traditional means of pulley adjustments. The othermeans to adjust the unit static and cfm performance isto utilize the field installed Display Kit and adjust thefrequency and voltage in the VFD to requiredperformance requirements. In either case, once setup, the VFD will automatically adjust the speedbetween the cooling stage operations.*Data based on .10 ($/kWh) in an office applicationutilizing ICP’s HAP 4.6 simulation software programHinged Access PanelsAllows access to unit’s major components withspecifically designed hinged access panels. Panelsare:filter, control box, fan motor and compressor.MotorMaster Head Pressure ControllerThe Motormaster motor controller is a low ambient,head pressure controller kit that is designed tomaintain the unit’s condenser head pressure duringperiods of low ambient cooling operation. This deviceshould be used as an alternative to economizer freecooling not when economizer usage is either notappropriate or desired. The MotorMaster will eithercycle the outdoor−fan motors or operate them atreduced speed to maintain the unit operation,depending on the model.
MotorMaster allows cooling operation down to −20�F(−29�C) ambient conditions.Winter Start KitThe winter start kit by ICP extends the low ambientlimit of your rooftop to 25�F (−4�C). The kit bypassesthe low pressure switch, preventing nuisance trippingof the low pressure switch. Other low ambientprecautions may still be prudent.Alternate Motors and DrivesSome applications need larger horsepower motors,some need more airflow, and some need both.Regardless of the case, your ICP expert has a factoryinstalled combination to meet your application. A wideselection of motors and pulleys (drives) are available,factory installed, to handle nearly any application.Thru−the−Base ConnectionsThru−the−base connections, available as either anaccessory or as a factory option, are necessary toensure proper connection and seal when routing wireand piping through the rooftop’s basepan and curb.These couplings eliminate roof penetration and shouldbe considered for gas lines, main power lines, as wellas control power.Electric HeatersICP offers a full−line of field−installed accessoryheaters. The heaters are very easy to use, install andare all pre−engineered and certified.Time schedules are built in and the Scrolling Marqueedisplay provides easy access to setpoints.HACR BreakerThese manual reset devices provide overload andshort circuit protection for the unit. Factory wired andmounted with the units with access cover to helpprovide environment protection.On 575V applications, HACR breaker can only beused with WYE power distribution systems. Use onDelta power distribution systems is prohibited.Foil Faced Insulated CabinetCabinet is fully insulated with non−fibrous, foil facedcleanable insulation that is mechanically secured andencapsulated in unit design.Low Ambient ControllerThe low ambient controller is a head pressurecontroller kit that is designed to maintain the unit’scondenser head pressure during periods of lowambient cooling operation. This device should be usedas an alternative to economizer free cooling not wheneconomizer usage is either not appropriate or desired.The low ambient controller will either cycle the outdoorfan motors or operate them at reduced speed tomaintain the unit operation, depending on the model.This controller allows cooling operation down to 0�F(−18�C) ambient conditions. (Not available on 110 sizemodels as standard unit cooling operation down to 0�F(−18�C.)
Specifications subject to change without notice. 5513 21 3607 00
ACCESSORIES − RAH036−150ECONOMIZERS
Model Number Description Use With Model Size
DNECOMZR020A02
Vertical Economizer IV with solid−state controller, gear−driven,3−position modulating damper, spring return actuator, up to100% barometric relief, supply and outdoor air sensors, andCO2 sensor compatible.
036 − 060
DNECOMZR021A03
Vertical Economizer IV with solid−state controller, gear−driven,3−position modulating damper, spring return actuator, up to100% barometric relief, supply and outdoor air sensors, andCO2 sensor compatible.
072 − 120
DNECOMZR062A00
Vertical Economizer IV with solid−state controller, gear−driven,3−position modulating damper, spring return actuator, up to100% barometric relief, supply and outdoor air sensors, andCO2 sensor compatible.
150
CRECOMZR069A001,2
Ultra Low Leak Vertical3 Economizer X with solid−state W7220controller, gear−driven, modulating damper, spring returnactuator, up to 100% barometric relief, supply and outdoor airsensors, and CO2 sensor compatible, for use in electromechanical controls only.
090 − 120
CRECOMZR071A001,2
Ultra Low Leak Vertical3 Economizer X with solid−state W7220controller, gear−driven, modulating damper, spring returnactuator, up to 100% barometric relief, supply and outdoor airsensors, and CO2 sensor compatible, for use in electromechanical controls only.
150
DNECOMZR024A02
Horizontal Economizer IV with solid−state controller,gear−driven, 3−position modulating damper, spring returnactuator, up to 100% barometric relief, supply and outdoor airsensors, and CO2 sensor compatible.
036 − 060
DNECOMZR025A02
Horizontal Economizer IV with solid−state controller,gear−driven, 3−position modulating damper, spring returnactuator, up to 100% barometric relief, supply and outdoor airsensors, and CO2 sensor compatible.
072 − 120
DNECOMZR064A00
Horizontal Economizer IV with solid−state controller,gear−driven, 3−position modulating damper, spring returnactuator, up to 100% barometric relief, supply and outdoor airsensors, and CO2 sensor compatible.
150
1 Economizer X cannot be installed with Economizer IV, manual damper, or motorized damper.2 Can only be used on electrical mechanical units with 2−stage cooling and 2−speed fan control.3 Economizer X is currently only available on vertical air flow configuration models.
ECONOMIZER SENSORSModel Number Description Use With Model Size
DNTEMPSN002A00Outdoor or Return Dry Bulb Temperature Sensor used withElectro−Mechanical control. Economizer IV
DNCBDIOX005A00CO2 Sensor for use in return airstream. Also includes AspiratorBox required for Duct Mounting. Economizer IV & X
DNENTDIF004A00Return Air Enthalpy Sensor used with Electro−Mechanicalcontrols, use with AXB078ENT for differential enthalpy control. Economizer IV
AXB078ENTAccusensor II Economizer Differential Enthalpy ControlUpgrade Economizer IV
CRTEMPSN005A00Outdoor or return dry bulb temperature sensor used withHoneywell W7220 electro−mechanical control. Economizer X
HH57AC081Enthalpy control for W7220 controller only. (One required forsingle enthalpy, two required for differential enthalpy) Economizer X
NOTE: Supply air temperature sensor (SAT and low ambient lockout switch) provided with economizer IV or economizer X.
Specifications subject to change without notice.6 513 21 3607 00
ACCESSORIES − RAH036−150 (cont.)POWER EXHAUST *
Model Number Description Use With Model SizeDNPWREXH030A01 Vertical Power Exhaust 208/230 volt (1 or 3 Phase) 036 − 060DNPWREXH021A01 Vertical Power Exhaust 460 volt 036 − 060DNPWREXH022A01 Vertical Power Exhaust 208/230 volt 072 − 120DNPWREXH023A01 Vertical Power Exhaust 460 volt 072 − 120DNPWREXH080A00 Vertical Power Exhaust 208/230 volt 150DNPWREXH081A00 Vertical Power Exhaust 460 volt 150DNPWREXH028A01 Horizontal Power Exhaust 208/230 (1 or 3 Phase) & 575 volt 036 − 120DNPWREXH029A01 Horizontal Power Exhaust 460 volt 036 − 120DNPWREXH082A00 Horizontal Power Exhaust 208/230 & 575 volt 150DNPWREXH083A00 Horizontal Power Exhaust 460 volt 150
* Vertical Power Exhaust requires a vertical economizer. Horizontal Power Exhaust should be duct−mounted in the return duct. Horizontal power exhaust includes exhaust hood, screens, and propeller fan system.
575V TRANSFORMERModel Number Description Use With Model Size
1171494 2Transformer for conversion from 575v to 208/230v power exhaustapplications.
036 − 150
MANUAL OUTDOOR AIR DAMPERSModel Number Description Use With Model Size
CRMANDPR001A03 25% Open Manual Fresh Air Damper 036 − 060CRMANDPR001A02 50% Open Manual Fresh Air Damper 036 − 060CRMANDPR002A03 25% Open Manual Fresh Air Damper 072 − 120CRMANDPR002A02 50% Open Manual Fresh Air Damper 072 − 120CRMANDPR011A00 50% Open Manual Fresh Air Damper 150
MOTORIZED OUTDOOR AIR DAMPERSModel Number Description Use With Model Size
CRTWOPOS010A00Motorized 2 position outdoor air damper (25−100% OutdoorAir)
SPECIAL − 150 SIZE SPECIFIC ACCESSORIESModel Number Description Use With Model Size
CRDISBKT001A00
Disconnect Switch Bracket − Provides a pre engineered andsized mounting bracket for applications requiring a unit moun-ted fused disconnect of greater than 100 amps. Bracket as-sures that no damage will occur to coils when mounting withscrews and other fasteners.
150
CRDUCTCV002A00Supply Duct Cover − This supply duct cover is required whenfield converting the factory standard vertical duct supply to hori-zontal duct supply configuration. One required per unit.
150
Specifications subject to change without notice. 7513 21 3607 00
ACCESSORIES − RAH036−150 (cont.)THROUGH−THE−BOTTOM/CURB POWER CONNECTION
Model Number Description Use With Model Size
CRBTMPWR001A01Thru−the−bottom electrical connections and thru−the−curb gas connections.Includes a 3/4−inch diameter liquid tight conduit fitting for high voltage powerwires
036 − 060
CRBTMPWR002A01Thru−the−bottom electrical connections and thru−the−curb gas connections.Includes a 1−1/4−inch diameter liquid tight conduit fitting for high voltagepower wires
072 − 120
CRBTMPWR003A01Thru−the−bottom power, control, and gas connections. Includes a 3/4−inchdiameter liquid tight conduit fitting for high voltage power wires
036 − 060
CRBTMPWR004A01Thru−the−bottom power, control, and gas connections. Includes a1−1/4−inch diameter liquid tight conduit fitting for high voltage power wires
072 − 120
CRBTMPWR005A01Thru−the−bottom power, control, and gas connections. Includes a 1−1/4inch diameter liquid tight conduit fitting for high voltage power wires
150CRBTMPWR006A00Thru−the−bottom power, control, and gas connections. Includes a 1−1/2 inch diameter liquid tight conduit fitting for high voltage power wires
CRBTMPWR007A00Thru−the−bottom power, control, and gas connections. Includes a 2 inchdiameter liquid tight conduit fitting for high voltage power wires
CONTROL UPGRADE KITSModel Number Description Use With Model Size
CRDISKIT001A002−Speed VFD display kit provides the field capability to set up points andtroubleshooting codes on the VFD controller. Can be used for any associatedunit with VFD.
All 2−Speed VFD Controllers
NRTIMEGD001A00 Time Guard II 036 − 150CRSDTEST001A00 Remote keyed attenuator / test / reset station 036 − 150
DNWINSTR001A00Electronic phase monitor breaks “R” control signal if trouble is detected. (Allowsoperation down to 25F from standard 40F.)
CRPHASE3002A00 Phase Monitor Control 036 − 150 (575v only)CRSTATUS001A00 Fan/Filter Status Switch − Indicator light not included 036 − 150
ACCESSORY KITS FOR UNITS WITH HINGED ACCESS PANELSModel Number Description Use With Model Size
CRPECONV003A00Vertical accessory kit used with installing a vertical economizer on a unit thathas hinged access panels. Includes angle and seal strip
036−072
CRPECONV004A00Vertical accessory kit used with installing a vertical economizer on a unit thathas hinged access panels. Includes angle and seal strip
090−150
CRPECONV007A00Vertical & Horizontal accessory kit used with installing a 2−position damper orvertical & horizontal economizer on a unit that has hinged access panels. In-cludes angle and seal strip
170
CRHNGPNL001A00Horizontal accessory kit used with installing a vertical economizer on a unit thathas hinged access panels. Includes angle and seal strip
036−072
CRHNGPNL002A00Horizontal accessory kit used with installing a vertical economizer on a unit thathas hinged access panels. Includes angle and seal strip
090−150
CRHNGPNL007A00Vertical & Horizontal accessory kit used with installing a 2−position damper orvertical & horizontal economizer on a unit that has hinged access panels. In-cludes angle and seal strip
150
Specifications subject to change without notice.8 513 21 3607 00
Motormaster I Low Ambient Kit. Mechanical cooling operationdown to −20 F (− 29 C). Kit includes 3 motors, MotorMastercontroller, wiring label, and required wire ties and connectors,DNWINSTR001A00 also required (one per refrigerant circuit)
150, 208/230−3−60
CRLOWAMB040A00
Motormaster I Low Ambient Kit. Mechanical cooling operationdown to −20 F (− 29 C). Kit includes 3 motors, MotorMastercontroller, wiring label, and required wire ties and connectors )575 Volt models also require CRTRXKIT002A00 plus DN-WINSTR001A00 also required (one per refrigerant circuit)
150, 460−3−60
CRTRXKIT001A00Motormaster I Low Ambient Control − Transformer Kit. Must beused in conjunction with Low Ambient Controller if used on575−3−60 volt models.
150, 575−3−60
*See usage tables in kit instructions.1 Requires motor change out.2 Available from FAST Parts. Note: Sizes 036−060 requires (1) low ambient controller and (1) compatible condenser fan motor for change out Sizes 072−102 requires (1) low ambient controller and (2) compatible condenser fan motors for change out3 No motor change is required on these specific models. Requires two DNWINSTR001A00 Winter Start kits (one per circuit).
LEGENDAHRI − Air Conditioning, Heating and Refrigeration
Institute Test StandardASHRAE − American Society of Heating, Refrigerating and
Air Conditioning, Inc.EER − Energy Efficiency RatioIEER − Integrated Energy Efficiency RatioSEER − Seasonal Energy Efficiency Ratio
Specifications subject to change without notice. 9513 21 3607 00
or
Use of the AHRI CertifiedTM Mark indicates amanufacturer’s participation in the program For verification of certification for individual products, go to www.ahridirectory.org.
NOTES: 1. Rated in accordance with AHRI Standards 210/240 (036−060 size) and 340/360 (072−150 size).2. Ratings are based on:
Cooling Standard: 80�F (27�C) db, 67�F (19�C) wb indoor air temp and 95�F (35�C) db outdoor air temp. IEER Standard: A measure that expresses cooling part−load EER efficiency for commercial unitary air−conditioning and heat pump equip-ment on the basis of weighted operation at various load capacities.
3. All RAH units comply with ASHRAE 90.1 and Energy Star Energy Standard for minimum SEER and EER requirements.4. RAH units comply with US Energy Policy Act (2005). To evaluate code compliance requirements, refer to state and local codes.
Table 4 – MINIMUM − MAXIMUM AIRFLOWS ELECTRIC HEAT
1. Outdoor sound data is measure in accordance with AHRI.2. Measurements are expressed in terms of sound power. Do not compare these values to sound pressure values because sound pressure
depends on specific environmental factors which normally do not match individual applications. Sound power values are independent of theenvironment 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 for ICP units are taken in accordance with AHRI.
Specifications subject to change without notice.10 513 21 3607 00
Total Face Area (ft2) 25.1 25.1 25.1 25.1 2 at 23.1Condenser fan / motor
Qty / Motor drive type 2 / direct 2 / direct 1 / direct ECM 1 / direct 3 / directMotor HP / RPM 1/4 / 1100 1/4 / 1100 1 / 1050 1 / 1175 1/4 / 1100Fan diameter (in) 22 22 30 30 22
Filters
RA Filter # / size (in) 4 / 20 x 20 x 2 4 / 20 x 20 x 2 4 / 20 x 20 x 2 4 / 20 x 20 x 26 / 18 x 24 x 2
Vert 2/24 x 27 x 1OA inlet screen # / size (in) 1 / 20 x 24 x 1 1 / 20 x 24 x 1 1 / 20 x 24 x 1 1 / 20 x 24 x 1 Horz 1/30 x 39 x1
Specifications subject to change without notice. 13513 21 3607 00
CURBS & WEIGHTS DIMENSIONS − RAH036−060
C10106B
Fig. 1 − Dimensions RAH036−060
Specifications subject to change without notice.14 513 21 3607 00
CURBS & WEIGHTS DIMENSIONS − RAH036−060 (cont.)
C10107B
Fig. 2 − Dimensions RAH036−060
CURBS & WEIGHTS DIMENSIONS − RAH036−060 (cont.)
C
BA
D
C08337
Fig. 3 − Service Clearance
LOC DIMENSION CONDITION
A
48−in (1219 mm) Unit disconnect is mounted on panel18−in (457 mm) No disconnect, convenience outlet option18−in (457 mm) Recommended service clearance12−in (305 mm) Minimum clearance
Special Check for sources of flue products within 10−ft of unit fresh air intake hood
C36−in (914 mm) Side condensate drain is used18−in (457 mm) Minimum clearance
D42−in (1067 mm) Surface behind servicer is grounded (e.g., metal, masonry wall, another unit)36−in (914 mm) Surface behind servicer is electrically non−conductive (e.g., wood, fiberglass)
NOTE: Unit not designed to have overhead obstruction. Contact Application Engineering for guidance on any application planning overhead ob-struction or for vertical clearances.
Specifications subject to change without notice. 15513 21 3607 00
CURBS & WEIGHTS DIMENSIONS − RAH036−060 (cont.)
EE
7/16
"[1
1]
4 9/
16"
[115
.5]
1/4"
[7.0
]
5' 7
-3/8
"[1
711.
3]
1' 4
-13/
16"
[4
27] I
NS
IDE
1-3/
4"[4
4.4]
2-3/
8"[6
1]
1-3/
4"[4
4.5]
1.00
"[2
5.4]
"A"
1-3/
4"[4
4.4]
21.7
4"[5
52.2
]5.42
"[1
37.7
]11
.96"
[303
.8]
4.96
"[1
26.0
]70
.87"
[180
0.2]
40.6
9"[1
033.
5]
21.8
4"[5
54.7
]
16.0
3"[4
07.2
]
1.75
"[4
4.5]
20.4
1"[5
18.3
]3.
00"
[76.
2]13
.78"
[350
.0]
14.0
0"[3
55.6
]
3.00
"[7
6.2]
15.1
9"[3
85.8
]
32.1
9"[8
17.6
]
3'-1
3/1
6"[9
44.6
]
"A"
1-3/
4"[4
4.5]
CR
BTM
PW
R00
1A01
3/4"
[19]
NP
T3/
4" [1
9] N
PT
1/2"
[12.
7] N
PT
CR
RFC
UR
B00
2A01
CO
NN
EC
TOR
PK
G. A
CC
.G
AS
CO
NN
EC
TIO
N T
YP
EG
AS
FIT
TIN
GP
OW
ER
WIR
ING
FI
TTIN
GC
ON
TRO
L W
IRIN
G
FITT
ING
AC
CE
SS
OR
Y C
ON
VE
NIE
NC
E
OU
TLE
T W
IRIN
G C
ON
NE
CTO
R
THR
U T
HE
CU
RB
1/2"
[12.
7] N
PT
1/2"
[12.
7] N
PT
CR
BTM
PW
R00
3A01
THR
U T
HE
BO
TTO
M
RO
OF
CU
RB
AC
CE
SS
OR
Y #
A
CR
RFC
UR
B00
1A01
14"
[356
]
24"
[610
]
EC
N N
O.
AP
P'D
CH
K'D
BY
DA
TER
EV
ISIO
N R
EC
OR
DR
EV
1067
898
--
MM
C04
/22/
13O
VE
RA
LL D
IM. 5
'-7 3
/8" W
AS
5'-7
7/8
; 18G
A
MA
TER
IAL
WA
16
GA
.; N
AIL
FIE
LD S
UP
PLI
ED
WA
S
WIT
H C
UR
BA
DR
AW
ING
RE
LEA
SE
LE
VE
L:P
RO
DU
CTI
ON
THIR
D A
NG
LEP
RO
JEC
TIO
N
UN
LES
S O
THE
RW
ISE
SP
EC
IFIE
DD
IME
NS
ION
S A
RE
IN IN
CH
ES
TOLE
RA
NC
ES
ON
:TH
IS D
OC
UM
EN
T A
ND
TH
E IN
FOR
MA
TIO
N C
ON
TAIN
ED
TH
ER
EIN
IS P
RO
PR
IETA
RY
TO
CA
RR
IER
CO
RP
OR
ATI
ON
AN
D S
HA
LL N
OT
BE
US
ED
OR
DIS
CLO
SE
D T
O O
THE
RS
, IN
WH
OLE
OR
IN P
AR
T,W
ITH
OU
T TH
E W
RIT
TEN
AU
THO
RIZ
ATI
ON
OF
CA
RR
IER
CO
RP
OR
ATI
ON
.
1 D
EC
2 D
EC
3 D
EC
AN
GM
ATE
RIA
L-
--
-
- - -
AU
THO
RIZ
ATI
ON
NU
MB
ER
TITL
E
1041
738
CU
RB
AS
Y, R
OO
FE
NG
INE
ER
ING
MA
NU
FAC
TUR
ING
(004
-007
)E
NG
INE
ER
ING
RE
QU
IRE
ME
NTS
--
--
SIZ
ED
RA
WIN
G N
UM
BE
RR
EV
T-00
5, Y
-002
DR
AFT
ER
CH
EC
KE
R
D48
TC40
0427
BW
EIG
HT:
-M
MC
06/1
7/11
--
SH
EE
T 5
OF
5
SU
RFA
CE
FIN
ISH
MFG
/PU
RC
HM
OD
EL
(IN
TER
NA
L U
SE
ON
LY)
NE
XT
DR
AW
ING
SC
ALE
DIS
TRIB
UTI
ON
-P
UR
CH
-N
/AM
MC
NO
TES
:1.
RO
OFC
UR
B A
CC
ES
SO
RY
IS S
HIP
PE
D D
ISA
SS
EM
BLE
D.
2. IN
SU
LATE
D P
AN
ELS
: 25.
4 [1
"] TH
K. P
OLY
UR
ETH
AN
E F
OA
M, 4
4.5
[1-3
/4] #
DE
NS
ITY
.3.
DIM
EN
SIO
NS
IN [
] A
RE
IN M
ILLI
ME
TER
S.
4. R
OO
FCU
RB
: 18
GA
GE
STE
EL.
5. A
TTA
CH
DU
CTW
OR
K T
O C
UR
B. (
FLA
NG
ES
OF
DU
CT
RE
ST
ON
CU
RB
).6.
SE
RV
ICE
CLE
AR
AN
CE
4 F
EE
T O
N E
AC
H S
IDE
.7.
D
IRE
CTI
ON
OF
AIR
FLO
W.
8. C
ON
NE
CTO
R P
AC
KA
GE
CR
BTM
PW
R00
1A01
IS F
OR
TH
RU
-TH
E-C
UR
B G
AS
TY
PE
P
AC
KA
GE
CR
BTM
PW
R00
3A01
IS F
OR
TH
RU
-TH
E-B
OTT
OM
TY
PE
GA
S C
ON
NE
CTI
ON
S.
TYP
ICA
L (4
) SID
ES
SU
PP
LY A
IRR
ETU
RN
AIR
RO
OFI
NG
MA
TER
IAL
(FIE
LD S
UP
PLI
ED
)
CA
NT
STR
IP(F
IELD
SU
PP
LIE
D)
RO
OFI
NG
FE
LT(F
IELD
SU
PP
LIE
D)
CO
UN
TER
FLA
SH
ING
(FIE
LD S
UP
PLI
ED
)
UN
ITG
AS
KE
T(S
UP
PLI
ED
WIT
H C
UR
B)
RIG
ID IN
SU
LATI
ON
(FIE
LD S
UP
PLI
ED
)
DU
CT
(FIE
LD S
UP
PLI
ED
)
NA
IL (F
IELD
SU
PP
LIE
D)
CE
RTI
FIE
D D
RA
WIN
G
VIE
W "B
"C
OR
NE
R D
ETA
IL
SE
E V
IEW
"B"
RE
TUR
N A
IRS
UP
PLY
AIR
SU
PP
LY A
IRO
PE
NIN
G
RE
TUR
N A
IRO
PE
NIN
G
GA
S S
ER
VIC
E P
LATE
TH
RU
TH
E C
UR
B
DR
ILL
HO
LE
2"
[50.
8] @
A
SS
EM
BLY
(IF
RE
QU
IRE
D)
(SE
E N
OTE
#8)
SE
E N
OTE
#2
11 3
/4"[2
98.5
] WID
EIN
SU
LATE
D D
EC
K P
AN
ELS
8 9/
16"[2
17.5
] WID
EIN
SU
LATE
D D
EC
K P
AN
EL
1/3/
4"[4
4.5]
SC
ALE
0.2
50E
-ES
EC
TIO
N
C13310
Fig. 4 − Roof Curb Details
Specifications subject to change without notice.16 513 21 3607 00
CURBS & WEIGHTS DIMENSIONS − RAH072−102
C11334B
Fig. 5 − Dimensions RAH072−090
Specifications subject to change without notice. 17513 21 3607 00
CURBS & WEIGHTS DIMENSIONS − RAH072−102 (cont.)
C11335B
Fig. 6 − Dimensions RAH072−090
CURBS & WEIGHTS DIMENSIONS − RAH072−102 (cont.)
C
BA
D
C10577B
Fig. 7 − Service Clearance
LOC DIMENSION CONDITION
A
48−in (1219 mm) Unit disconnect is mounted on panel18−in (457 mm) No disconnect, convenience outlet option18−in (457 mm) Recommended service clearance12−in (305 mm) Minimum clearance
Special Check for sources of flue products within 10−ft of unit fresh air intake hood
C36−in (914 mm) Side condensate drain is used18−in (457 mm) Minimum clearance
D42−in (1067 mm) Surface behind servicer is grounded (e.g., metal, masonry wall, another unit)36−in (914 mm) Surface behind servicer is electrically non−conductive (e.g., wood, fiberglass)
NOTE: Unit not designed to have overhead obstruction. Contact Application Engineering for guidance on any application planning overhead ob-struction or for vertical clearances.
Specifications subject to change without notice.18 513 21 3607 00
CURBS & WEIGHTS DIMENSIONS − RAH110−120
C13296
Fig. 8 − Dimensions RAH110−120
Specifications subject to change without notice. 19513 21 3607 00
CURBS & WEIGHTS DIMENSIONS − RAH110−120 (cont.)
C13297B
Fig. 9 − Dimensions RAH120
Specifications subject to change without notice.20 513 21 3607 00
CURBS & WEIGHTS DIMENSIONS − RAH110−120 (cont.)
H110H120
C10107
Fig. 10 − Dimensions RAH110−120
C
BA
D
C08337B
Fig. 11 − Service Clearance
LOC DIMENSION CONDITION
A
48−in (1219 mm) Unit disconnect is mounted on panel18−in (457 mm) No disconnect, convenience outlet option18−in (457 mm) Recommended service clearance12−in (305 mm) Minimum clearance
Special Check for sources of flue products within 10−ft of unit fresh air intake hood
C36−in (914 mm) Side condensate drain is used18−in (457 mm) Minimum clearance
D42−in (1067 mm) Surface behind servicer is grounded (e.g., metal, masonry wall, another unit)36−in (914 mm) Surface behind servicer is electrically non−conductive (e.g., wood, fiberglass)
NOTE: Unit not designed to have overhead obstruction. Contact Application Engineering for guidance on any application planning overhead ob-struction or for vertical clearances.
Specifications subject to change without notice. 21513 21 3607 00
CURBS & WEIGHTS DIMENSIONS − RAH072−120 (cont.)
7/16
"[1
1]
4 9/
16"
[115
.5]
1/4"
[7.0
]
"A"
1 3/
4"[4
4.5]
1 3/
4"[4
4.4]
20-3
/4"
[513
]IN
SID
E
"A"
81 3
/4"
[207
6.3]
53 1
/2"
[135
8.9]
1 3/
4"[4
4.5]
40 3
/16"
[102
0.8]
2 1/
4"[5
7.2]
26"
[660
.4]
4 3/
16"
[106
.0]
6 3/
64"
[153
.5]
32 9
/16"
[827
.1]
23 1
/16"
[585
.8]
31 1
7/32
"[8
00.9
]1
3/4"
[44.
5]
15 1
3/16
"[4
01.6
]
11.4
2"[2
90.0
]
1 3/
4"[4
4.4]
3"[7
6.2]
2-3/
8"[6
1]
14 3
/4"
[374
.7]
6' 6
-1/4
"[1
987.
5]
1-3
/4"
TY
P [4
4.5]
4' 2
"[1
270.
0]
15 1
5/32
[392
.9]
1.00
"[2
5.4]
CR
BTM
PW
R00
2A01
3/4"
[19]
NP
T1
1/4"
[31.
7] N
PT
CR
RFC
UR
B00
4A01
CO
NN
EC
TOR
PK
G. A
CC
.G
AS
CO
NN
EC
TIO
N T
YP
EG
AS
FIT
TIN
GP
OW
ER
WIR
ING
FI
TTIN
GC
ON
TRO
L W
IRIN
G
FITT
ING
AC
CE
SS
OR
Y C
ON
VE
NIE
NC
E
OU
TLE
T W
IRIN
G C
ON
NE
CTO
R
THR
U T
HE
CU
RB
1/2"
[12.
7] N
PT
1/2"
[12.
7] N
PT
CR
BTM
PW
R00
4A01
THR
U T
HE
BO
TTO
M
RO
OF
CU
RB
AC
CE
SS
OR
Y #
A
CR
RFC
UR
B00
3A01
14"
[356
]
24"
[610
]
EC
N N
O.
AP
P'D
CH
K'D
BY
DA
TER
EV
ISIO
N R
EC
OR
DR
EV
1067
898
--
MM
C4/
22/1
36'
61/
4" W
AS
6' 7
1/6
", 4'
2' W
AS
4' 2
13/
16";
18 G
A W
AS
16
GA
.; 15
13/
16" W
AS
15
15/1
6"; N
AIL
FI
ELD
SU
PP
LIE
D W
AS
WIT
H C
UR
BC
DR
AW
ING
RE
LEA
SE
LE
VE
L:P
RO
DU
CTI
ON
THIR
D A
NG
LEP
RO
JEC
TIO
N
UN
LES
S O
THE
RW
ISE
SP
EC
IFIE
DD
IME
NS
ION
S A
RE
IN IN
CH
ES
TOLE
RA
NC
ES
ON
:TH
IS D
OC
UM
EN
T A
ND
TH
E IN
FOR
MA
TIO
N C
ON
TAIN
ED
TH
ER
EIN
IS P
RO
PR
IETA
RY
TO
CA
RR
IER
CO
RP
OR
ATI
ON
AN
D S
HA
LL N
OT
BE
US
ED
OR
DIS
CLO
SE
D T
O O
THE
RS
, IN
WH
OLE
OR
IN P
AR
T,W
ITH
OU
T TH
E W
RIT
TEN
AU
THO
RIZ
ATI
ON
OF
CA
RR
IER
CO
RP
OR
ATI
ON
.
1 D
EC
2 D
EC
3 D
EC
AN
GM
ATE
RIA
L-
--
-
- - -
AU
THO
RIZ
ATI
ON
NU
MB
ER
TITL
E
1029
120
CU
RB
AS
Y, R
OO
FE
NG
INE
ER
ING
MA
NU
FAC
TUR
ING
EN
GIN
EE
RIN
G R
EQ
UIR
EM
EN
TS-
--
-S
IZE
DR
AW
ING
NU
MB
ER
RE
V
T-00
5, Y
-002
DR
AFT
ER
CH
EC
KE
R
D50
HJ4
0501
2C
WE
IGH
T:-
MM
C12
/16/
09-
-S
HE
ET
5 O
F 5
SU
RFA
CE
FIN
ISH
MFG
/PU
RC
HM
OD
EL
(IN
TER
NA
L U
SE
ON
LY)
NE
XT
DR
AW
ING
SC
ALE
DIS
TRIB
UTI
ON
-P
UR
CH
-N
/A-
NO
TES
:1.
RO
OFC
UR
B A
CC
ES
SO
RY
IS S
HIP
PE
D D
ISA
SS
EM
BLE
D.
2. IN
SU
LATE
D P
AN
ELS
: 25.
4 [1
"] TH
K. P
OLY
UR
ETH
AN
E F
OA
M, 4
4.5
[1-3
/4] #
DE
NS
ITY
.3.
DIM
EN
SIO
NS
IN [
] A
RE
IN M
ILLI
ME
TER
S.
4. R
OO
FCU
RB
: 18
GA
GE
STE
EL.
5. A
TTA
CH
DU
CTW
OR
K T
O C
UR
B. (
FLA
NG
ES
OF
DU
CT
RE
ST
ON
CU
RB
).6.
SE
RV
ICE
CLE
AR
AN
CE
4 F
EE
T O
N E
AC
H S
IDE
.7.
D
IRE
CTI
ON
OF
AIR
FLO
W.
8. C
ON
NE
CTO
R P
AC
KA
GE
CR
BTM
PW
R00
2A01
IS F
OR
TH
RU
-TH
E-C
UR
B G
AS
TY
PE
P
AC
KA
GE
CR
BTM
PW
R00
4A01
IS F
OR
TH
RU
-TH
E-B
OTT
OM
TY
PE
GA
S C
ON
NE
CTI
ON
S.
TYP
ICA
L (4
) SID
ES
SU
PP
LY A
IRR
ETU
RN
AIR
RO
OFI
NG
MA
TER
IAL
(FIE
LD S
UP
PLI
ED
)
CA
NT
STR
IP(F
IELD
SU
PP
LIE
D)
RO
OFI
NG
FE
LT(F
IELD
SU
PP
LIE
D)
CO
UN
TER
FLA
SH
ING
(FIE
LD S
UP
PLI
ED
)
UN
ITG
AS
KE
T(S
UP
PLI
ED
WIT
H C
UR
B)
RIG
ID IN
SU
LATI
ON
(FIE
LD S
UP
PLI
ED
)
DU
CT
(FIE
LD S
UP
PLI
ED
)
NA
IL (F
IELD
SU
PP
LIE
D)
CE
RTI
FIE
D D
RA
WIN
G
VIE
W "B
"C
OR
NE
R D
ETA
IL
SE
CTI
ON
TH
RU
SID
E
SE
E V
IEW
"B
"
GA
S S
ER
VIC
E P
LATE
TH
RU
TH
E C
UR
B
DR
ILL
HO
LE
2" [5
0.8]
@
AS
SE
MB
LY (I
F R
EQ
UIR
ED
) (S
EE
NO
TE #
8)
SE
E N
OTE
#2
12-1
/2" [
317.
5] W
IDE
INS
ULA
TED
DE
CK
PA
NE
LS
9-15
/16"
[252
.4] W
IDE
INS
ULA
TED
DE
CK
PA
NE
L
SU
PP
LY A
IRR
ETU
RN
AIR
SU
PP
LY A
IRO
PE
NIN
G
RE
TUR
N A
IRO
PE
NIN
G
C13311
Fig. 12 − Roof Curb Details
Specifications subject to change without notice.22 513 21 3607 00
CURBS & WEIGHTS DIMENSIONS − RAH150
C13298B
Fig. 13 − Dimensions RAH150
Specifications subject to change without notice. 23513 21 3607 00
CURBS & WEIGHTS DIMENSIONS − RAH150 (cont.)
C13299B
Fig. 14 − Dimensions RAH150
Specifications subject to change without notice.24 513 21 3607 00
CURBS & WEIGHTS DIMENSIONS − RAH150 (cont.)
C
BA
D
C10578B
Fig. 15 − Service Clearance
LOC DIMENSION CONDITION
A
48−in (1219 mm) Unit disconnect is mounted on panel18−in (457 mm) No disconnect, convenience outlet option18−in (457 mm) Recommended service clearance12−in (305 mm) Minimum clearance
Special Check for sources of flue products within 10−ft of unit fresh air intake hood
C36−in (914 mm) Side condensate drain is used18−in (457 mm) Minimum clearance
D42−in (1067 mm) Surface behind servicer is grounded (e.g., metal, masonry wall, another unit)36−in (914 mm) Surface behind servicer is electrically non−conductive (e.g., wood, fiberglass)
NOTE: Unit not designed to have overhead obstruction. Contact Application Engineering for guidance on any application planning overhead ob-struction or for vertical clearances.
Specifications subject to change without notice. 25513 21 3607 00
CURBS & WEIGHTS DIMENSIONS − RAH150 (cont.)
C10772B
Fig. 16 − Roof Curb Detail
Specifications subject to change without notice.26 513 21 3607 00
OPTIONS & ACCESSORY WEIGHTS
Option / Accessory
OPTION / ACCESSORY WEIGHTS
04 05 06 07 08 09 11 12 14
lb kg lb kg lb kg lb kg lb kg lb kg lb kg lb kg lb kg
NOTE: Where multiple variations are available, the heaviest combination is listed.− Not Available1 For Hot Gas Re−Heat add MotorMaster Controller.
Specifications subject to change without notice. 27513 21 3607 00
APPLICATION DATAMin operating ambient temp (cooling):In mechanical cooling mode, your ICP rooftop cansafely operate down to an outdoor ambienttemperature of 35�F (−2�C) and 25�F (−4�C), with anaccessory winter start kit. It is possible to providecooling at lower outdoor ambient temperatures byusing less outside air, economizers, and/or accessorylow ambient kits.Max operating ambient temp (cooling):The maximum operating ambient temperature forcooling mode is 125�F (52�C). While cooling operationabove 125�F (52�C) may be possible, it could causeeither a reduction in performance, reliability, or aprotective action by the unit’s internal safety devices.Min and max airflow (cooling mode):To maintain safe and reliable operation of your rooftop,operate within the cooling airflow limits. Operatingabove the max may cause blow−off, undesired airflownoise, or airflow related problems with the rooftop unit.Operating below the min may cause problems with coilfreeze−up.Airflow:All units are draw−through in cooling mode.Outdoor air application strategies:Economizers reduce operating expenses andcompressor run time by providing a free source ofcooling and a means of ventilation to matchapplication changing needs. In fact, they should beconsidered for most applications. Also, consider thevarious economizer control methods and theirbenefits, as well as sensors required to accomplishyour application goals. Please contact your local ICPrepresentative for assistance.Motor limits, break horsepower (BHP):Due to ICP’s internal unit design, air path, andspecially designed motors, the full horsepower(maximum continuous BHP) band, as listed in Table 6and 7, can be used with the utmost confidence. Thereis no need for extra safety factors, as ICP’s motors aredesigned and rigorously tested to use the entire, listedBHP range without either nuisance tripping orpremature motor failure.
Sizing a rooftopBigger isn’t necessarily better. While an air conditionerneeds to have enough capacity to meet the load, itdoesn’t need excess capacity. In fact, having excesscapacity typically results in very poor part loadperformance and humidity control.Using higher design temperatures than ASHRAErecommends for your location, adding “safety factors”to the calculated load, and rounding up to the nextlargest unit, are all signs of oversizing air conditioners.Oversizing can cause short−cycling, and short cyclingleads to poor humidity control, reduced efficiency,higher utility bills, drastic indoor temperature swings,excessive noise, and increased wear and tear on theair conditioner.Rather than oversizing an air conditioner, wisecontractors and engineers “right−size” or even slightlyundersize air conditioners. Correctly sizing an airconditioner controls humidity better; promotesefficiency; reduces utility bills; extends equipment life,and maintains even, comfortable temperatures.Low ambient applicationsWhen equipped with a ICP economizer, your rooftopunit can cool your space by bringing in fresh, cooloutside air. In fact, when so equipped, accessorylow−ambient kit may not be necessary. In low ambientconditions, unless the outdoor air is excessively humidor contaminated, economizer−based “free cooling” isthe preferred less costly and energy consciousmethod.In low ambient applications where outside air mightnot be desired (such as contaminated or excessivelyhumid outdoor environments), your ICP rooftop canoperate to ambient temperatures down to −20�F(−29�C) using the recommended field installedaccessory MotorMaster low ambient controller or 0�F(−18�C) with the factory installed low ambientcontroller option.Winter startICP’s winter start kit extends the low ambient limit ofyour rooftop to 25�F (−4�C). The kit bypasses the lowpressure switch, preventing nuisance tripping of thelow pressure switch. Other low ambient precautionsmay still be prudent.
RAH − 2−Speed Indoor Fan Motor − Variable Frequency Drive (VFD) HP RatingUnit Size VOLTAGE STATIC OPTION VFD HP RATING
090208/230, 460, 575 STD 3208/230, 460, 575 MED 3208/230, 460, 575 HIGH 7.5
102208/230, 460, 575 STD 3208/230, 460, 575 MED 3208/230, 460, 575 HIGH 5
110208/230, 460, 575 STD 3208/230, 460, 575 MED 5208/230, 460, 575 HIGH 7.5
120208/230, 460, 575 STD 3208/230, 460, 575 MED 5208/230, 460, 575 HIGH 7.5
150
208/230. 460 STD 3575 STD 5
208/230, 460, 575 MED 5208/230, 460, 575 HIGH 7.5
Specifications subject to change without notice.28 513 21 3607 00
SELECTION PROCEDURE (WITH RAH072 EXAMPLE)1I. Determine cooling and heating loads.
Given:Mixed Air Drybulb 80�F (27�C)Mixed Air Wetbulb 67�F (19�C)Ambient Drybulb 95�F (35�C)TCLoad 69.0 MBHSHCLoad 51.0 MBHVertical Supply Air 2100 CFMExternal Static Pressure 0.66 in. w.g.Electrical Characteristics 230−3−60
II. Make an initial guess at cooling tons.Refrig. tons = TCLoad / 12 MBH per tonRefrig. tons = 69.0 / 12 = 5.75 tons
In this case, start by looking at the RAH072.
III. Look up the rooftop’s TC and SHC.Cooling Capacity Table shows that, at the applic-ation’s supply air CFM, mixed air and ambienttemperatures, the RAH072 supplies:TCLoad = 73.6 MBHSHCLoad = 53.3 MBH.
IV. Calculate the building Latent Heat Load.LCLoad = TCLoad − SHCLoadLCLoad = 69.0 MBH − 51.0 MBH = 18.0 MBH
Compare the rooftop’s SHC and LC to the build-ing’s Sensible and Latent Heat Loads.
VII. Select factory options (FIOP)Local code requires an economizer for any unitwith TC larger than 65.0 MBH.
VIII. Calculate the total static pressure.External static pressure 0.66 in. wgSum of FIOP/Accessory static +0.05 in. wg
Total Static Pressure 0.71 in. wg
IX. Look up the Indoor Fan RPM & BHP.Table 22 shows, at 2100 CFM & ESP= 0.71,RPM = 680 & BHP = 0.97
X. Convert BHP (Step IX) into fan motor heat.Fan Motor Heat = 2.546*097/.80 efficiency.Fan Motor Heat = 1.98 MBHDeduct this value from the gross capacity valuesfor net capacity.
XI. Determine electrical requirementsMCA/MOCP table shows the MCA and MOCP ofa RAH072 (without convenience outlet) as:
LegendBHP — Break horsepowerFLA — Full load ampsLC — Latent capacityLRA — Lock rotor ampMBH — (1,000) BTUHMCA — Min. circuit ampacityMOCP — Max. over−current protectionRPM — Revolutions per minuteRTU — Rooftop unitSHC — Sensible heat capacityTC — Total capacity
NOTES: 1. Selection software by ICP saves time by performing many of the
steps above. Contact your ICP sales representative forassistance.
2. Selecting a unit with a SHC slightly lower than the SHCLoad isoften better than oversizing. Slightly lower SHC’s will help controlindoor humidity, and prevent temperature swings.
3. If the rooftop’s capacity meets the Sensible Heat Load, but notthe Latent Heat Load.
4. Indoor Fan Motor efficiency is available in Electrical Information.Use the decimal form in the equation eg. 80% =.8.
Specifications subject to change without notice. 29513 21 3607 00
Table 8 – COOLING CAPACITIES 1−STAGE COOLING
RAH036
AMBIENT TEMPERATURE85 95 105 115 125
EA (dB) EA (dB) EA (dB) EA (dB) EA (dB)75 80 85 75 80 85 75 80 85 75 80 85 75 80 85
LEGEND:− − Do not operateCfm − Cubic feet per minute (supply air)EAT(db) − Entering air temperature (dry bulb)EAT(wb) − Entering air temperature (wet bulb)SHC − Sensible heat capacityTC − Total capacity
Specifications subject to change without notice.30 513 21 3607 00
LEGEND:− − Do not operateCfm − Cubic feet per minute (supply air)EAT(db) − Entering air temperature (dry bulb)EAT(wb) − Entering air temperature (wet bulb)SHC − Sensible heat capacityTC − Total capacity
Specifications subject to change without notice.32 513 21 3607 00
LEGEND:− − Do not operateCfm − Cubic feet per minute (supply air)EAT(db) − Entering air temperature (dry bulb)EAT(wb) − Entering air temperature (wet bulb)SHC − Sensible heat capacityTC − Total capacity
Specifications subject to change without notice.34 513 21 3607 00
LEGEND:− − Do not operateCfm − Cubic feet per minute (supply air)EAT(db) − Entering air temperature (dry bulb)EAT(wb) − Entering air temperature (wet bulb)SHC − Sensible heat capacityTC − Total capacity
Specifications subject to change without notice.36 513 21 3607 00
* See Minimum−Maximum Airflow Ratings in Table 4. Do not operate outside these limits.LEGEND:− − Do not operateCfm − Cubic feet per minute (supply air)EAT(db) − Entering air temperature (dry bulb)EAT(wb) − Entering air temperature (wet bulb)SHC − Sensible heat capacityTC − Total capacity
Specifications subject to change without notice.38 513 21 3607 00
* See Minimum−Maximum Airflow Ratings in Table 4. Do not operate outside these limits.LEGEND:− − Do not operateCfm − Cubic feet per minute (supply air)EAT(db) − Entering air temperature (dry bulb)EAT(wb) − Entering air temperature (wet bulb)SHC − Sensible heat capacityTC − Total capacity
Specifications subject to change without notice.40 513 21 3607 00
* See Minimum−Maximum Airflow Ratings in Table 4. Do not operate outside these limits.LEGEND:− − Do not operateCfm − Cubic feet per minute (supply air)EAT(db) − Entering air temperature (dry bulb)EAT(wb) − Entering air temperature (wet bulb)SHC − Sensible heat capacityTC − Total capacity
NOTES: 1. Direct interpolation is permissible. Do not extrapolate.2. The following formulas may be used:
tldb = tedb –sensible capacity (Btuh)
1.10 x cfm
tlwb = Wet−bulb temperature corresponding to enthalpy of airleaving evaporator coil (hlwb)
hlwb = hewb –total capacity (Btuh)
4.5 x cfm Where: hewb = Enthalpy of air entering evaporator coil
Specifications subject to change without notice.42 513 21 3607 00
* See Minimum−Maximum Airflow Ratings in Table 4. Do not operate outside these limits.LEGEND:− − Do not operateCfm − Cubic feet per minute (supply air)EAT(db) − Entering air temperature (dry bulb)EAT(wb) − Entering air temperature (wet bulb)SHC − Sensible heat capacityTC − Total capacity
Specifications subject to change without notice.44 513 21 3607 00
* See Minimum−Maximum Airflow Ratings in Table 4. Do not operate outside these limits.LEGEND:− − Do not operateCfm − Cubic feet per minute (supply air)EAT(db) − Entering air temperature (dry bulb)EAT(wb) − Entering air temperature (wet bulb)SHC − Sensible heat capacityTC − Total capacity
Specifications subject to change without notice.46 513 21 3607 00
Fig. 23 − Return Air Pressure Drop−Horizontal 3−10 Ton
Specifications subject to change without notice. 49513 21 3607 00
ECONOMIZER, BAROMETRIC RELIEF AND PE PERFORMANCE (cont.)
Horizontal Application (cont.)
0
500
1000
1500
2000
2500
0 0.05 0.1 0.15 0.2 0.25 0.3
RE
LIE
F FL
OW
(CFM
)
RETURN DUCT STATIC PRESSURE (in. wg)
12½-Ton HC
Horizontal Economizers
C101002
Fig. 24 − Barometric Relief Flow−Horizontal 12.5 Ton
0
1000
2000
3000
4000
5000
6000
0 0.1 0.2 0.3 0.4
RE
TU
RN
AIR
FL
OW
(CFM
)
RETURN DUCT STATIC PRESSURE DROP (in. wg)
12½-Ton HC
Horizontal Economizers
C101003
Fig. 25 − Return Air Pressure Drop−Horizontal−12.5 Ton
0
500
1000
1500
2000
2500
0 0.1 0.2 0.3 0.4 0.5
STATIC PRESSURE (in. wg)
FLO
W(c
fm)
3-12.5 Ton
C10995
Fig. 26 − Horizontal Power Exhaust Performance
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. Selection software is available, through your salesperson, to helpyou select the best motor/drive combination for your application.
4. The Fan Performance tables offer motor/drive recommendations. In cases when two motor/drive combinationswould work, ICP recommended the lower horsepower option.
5. For information on the electrical properties of ICP motors, please see the Electrical information section of thisbook.
6. For more information on the performance limits of ICP motors, see the application data section of this book.7. The EPACT (Energy Policy Act of 1992) regulates energy requirements for specific types of indoor fan
motors. Motors regulated by EPACT include any general purpose, T−frame (three−digit, 143 and larger),single−speed, foot mounted, polyphase, squirrel cage induction motors of NEMA (National ElectricalManufacturers Association) design A and B, manufactured for use in the United States. Ranging from 1 to 200Hp, these continuous−duty motors operate on 230 and 460 volt, 60 Hz power. If a motor does not fit into thesespecifications, the motor does not have to be replaced by an EPACT compliant energy−efficient motor.Variable−speed motors are exempt from EPACT compliance requirements.
Specifications subject to change without notice.50 513 21 3607 00
FAN PERFORMANCE (BELT DRIVE)
Table 10 – RAH036 3 PHASE NON−HOT GAS RE−HEAT 3 TON VERTICAL SUPPLY
CFM
Available External Static Pressure (in. wg)0.2 0.4 0.6 0.8 1.0
292A+295A 50.0 60.2 73 80 81 176 76 80 83 178See “Legend and Notes for Tables 72 − 73 on page 112
Specifications subject to change without notice.112 513 21 3607 00
ELECTRICAL INFORMATION
Table 73 − UNIT WIRE SIZING DATA WITH FACTORY INSTALLED 2 SPEED INDOOR FANOPTION (cont)
UN
IT
NO
M.
V-
Ph
-H
Z
IFMTYPE
ELEC. HTR NO C.O. or UNPWR C.O.
CRHEATER***A00
Nom(kW) FLA
NO P.E. w/ P.E. (pwrd fr/unit)
MCA
MAXFUSE orHACRBRKR
DISC. SIZEMCA
MAXFUSE orHACRBRKR
DISC. SIZE
FLA LRA FLA LRA
RA
H150 (
2-
sta
ge
co
ol)
575-
3-
60
STD
NONE − − 24 30 25 128 28 30 29 132
293A 16.5 15.9 26 30 25 128 31 35 29 132
290A+293A 26.5 25.5 38 40 35 128 43 45 39 132
296A 33.5 32.2 46 50 42 128 51 60 47 132
290A+296A 43.5 41.8 58 60 53 128 63 70 58 132
293A+296A 50.0 48.1 54 60 60 128 59 60 65 132
MED
NONE − − 24 30 25 128 28 30 29 132
293A 16.5 15.9 26 30 25 128 31 35 29 132
290A+293A 26.5 25.5 38 40 35 128 43 45 39 132
296A 33.5 32.2 46 50 42 128 51 60 47 132
290A+296A 43.5 41.8 58 60 53 128 63 70 58 132
293A+296A 50.0 48.1 54 60 60 128 59 60 65 132
HIGH
NONE − − 29 35 30 140 32 40 34 144
293A 16.5 15.9 32 35 30 140 36 40 34 144
290A+293A 26.5 25.5 44 45 40 140 48 50 44 144
296A 33.5 32.2 52 60 47 140 57 60 52 144
290A+296A 43.5 41.8 64 70 58 140 69 70 63 144
293A+296A 50.0 48.1 60 70 66 140 65 70 70 144
Legend and Notes for Tables 72 — 73LEGEND:BRKR − Circuit breakerCO − Convenience outletDISC − DisconnectFLA − Full load ampsIFM − Indoor fan motorLRA − Locked rotor ampsMCA − Minimum circuit ampsMOCP − MAX FUSE or HACR BreakerPE − Power exhaustPWRD CO − Powered convenient outletUNPWR CO − Unpowered convenient outletNOTES:
1. In compliance with NEC requirements for multimotor andcombination load equipment (refer to NEC Articles 430and 440), the overcurrent protective device for the unitshall be fuse or HACR breaker. Canadian units may befuse or circuit breaker.
2. Unbalanced 3-Phase Supply VoltageNever operate a motor where a phase imbalance in sup-ply voltage is greater than 2%. Use the following formulato determine the percentage of voltage imbalance.
% Voltage Imbalance = 100 xmax voltage deviation from average voltage
average voltage
Example: Supply voltage is 230-3-60
AB = 224 vBC = 231 vAC = 226 v
Average Voltage =(224 + 231 + 226)
=681
3 3
= 227
Determine maximum deviation from average voltage.(AB) 227 – 224 = 3 v(BC) 231 – 227 = 4 v(AC) 227 – 226 = 1 vMaximum deviation is 4 v.Determine percent of voltage imbalance.
% Voltage Imbalance = 100 x4
227
= 1.76%
This amount of phase imbalance is satisfactory as it is below themaximum allowable 2%.IMPORTANT: If the supply voltage phase imbalance is more than2%, contact your local electric utility company immediately.
Specifications subject to change without notice. 113513 21 3607 00
SEQUENCE OF OPERATION GeneralThe sequence below describes the sequence ofoperation for an electro−mechanical unit with andwithout a factory installed EconoMi$er� IV and X(called “economizer” in this sequence). For informationregarding a direct digital controller, see the start−up,operations, and troubleshooting manual for theapplicable controller.
Electro−mechanical units with no economizerCooling (Single speed indoor fan motor) —
When the thermostat calls for cooling, terminals G andY1 are energized. As a result, the indoor−fancontactor (IFC) and the compressor contactor (C1) areenergized, causing the indoor−an motor (IFM),compressor #1, and outdoor fan to start. If the unit has2 stages of cooling, the thermostat will additionallyenergize Y2. The Y2 signal will energize compressorcontactor #2 (C2), causing compressor #2 to start.Regardless of the number of stages, the outdoor−fanmotor runs continuously while unit is cooling.
Cooling (2−speed indoor fan motor) —
Per ASHRAE 90.1 standard section 6.4.3.10.b, duringthe first stage of cooling operation the VFD will adjustthe fan motor to provide 2/3rd of the total cfmestablished for the unit. When a call for the secondstage of cooling is required, the VFD will allow the totalcfm for the unit established (100%).
Heating
NOTE: The RAH is sold as cooling only. If electricheaters are required, use only factory−approvedelectric heaters. They will operate as described below.
Units have either 1 or 2 stages of electric heat. Whenthe thermostat calls for heating, power is applied tothe W1 terminal at the unit. The unit control willenergize the indoor fan contactor and the first stage ofelectric heat. On units with two−stage heating, whenadditional heating is required, the second stage ofelectric heat (if equipped) will be energized whenpower is applied at the W2 terminal on the unit.
Electro−mechanical units with an economizerCooling —
When free cooling is not available, the compressorswill be controlled by the zone thermostat. When freecooling is available, the outdoor−air damper ismodulated by the EconoMi$er IV and X control toprovide a 50�F (10�C) to 55�F (13�C) mixed−airtemperature into the zone. As the mixed airtemperature fluctuates above 55�F (13�C) or below50�F (10�C) dampers will be modulated (open orclose) to bring the mixed−air temperature back withincontrol. If mechanical cooling is utilized with freecooling, the outdoor−air damper will maintain itscurrent position at the time the compressor is started.If the increase in cooling capacity causes themixed−air temperature to drop below 45�F (9�C), thenthe outdoor−air damper position will be decreased tothe minimum position. If the mixed−air temperature
continues to fall, the outdoor−air damper will close.Control returns to normal once the mixed−airtemperature rises above 48�F (9�C). The powerexhaust fans will be energized and de−energized, ifinstalled, as the outdoor−air damper opens andcloses.
If field−installed accessory CO2 sensors areconnected to the EconoMi$er IV and X control, ademand controlled ventilation strategy will begin tooperate. As the CO2 level in the zone increases abovethe CO2 setpoint, the minimum position of the damperwill be increased proportionally. As the CO2 leveldecreases because of the increase in fresh air, theoutdoor−air damper will be proportionally closed. ForEconoMi$er IV and X operation, there must be athermostat call for the fan (G). If the unit is occupiedand the fan is on, the damper will operate at minimumposition. Otherwise, the damper will be closed.
When the EconoMi$er IV and X control is in theoccupied mode and a call for cooling exists (Y1 on thethermostat), the control will first check for indoor fanoperation. If the fan is not on, then cooling will not beactivated. If the fan is on, then the control will open theEconoMi$er IV and X damper to the minimumposition.
On the initial power to the EconoMi$er IV and Xcontrol, it will take the damper up to 2 1/2 minutesbefore it begins to position itself. After the initialpower−up, further changes in damper position cantake up to 30 seconds to initiate. Damper movementfrom full closed to full open (or vice versa) will takebetween 1 1/2 and 2 1/2 minutes. If free cooling canbe used as determined from the appropriatechangeover command (switch, dry bulb, enthalpycurve, differential dry bulb, or differential enthalpy),then the control will modulate the dampers open tomaintain the mixed−air temperature setpoint at 50�F(10�C) to 55�F (13�C). If there is a further demand forcooling (cooling second stage − Y2 is energized), thenthe control will bring on compressor stage 1 tomaintain the mixed−air temperature setpoint. TheEconoMi$er IV and X damper will be open atmaximum position. EconoMi$er IV and X operation islimited to a single compressor.
2−Speed Note: When operating in ventilation modeonly, the indoor fan motor will automatically adjust to2/3rd of the total cfm established.
Heating
The sequence of operation for the heating is the sameas an electromechanical unit with no economizer. Theonly difference is how the economizer acts. Theeconomizer will stay at the Economizer MinimumPosition while the evaporator fan is operating. Theoutdoor−air damper is closed when the indoor fan isnot operating.
Specifications subject to change without notice.114 513 21 3607 00
SEQUENCE OF OPERATION (cont.)Optional Hot Gas Re−Heat DehumidificationSystem
Units with the factory equipped Hot Gas Re−Heatoption are capable of providing multiple modes ofimproved dehumidification as a variation of the normalcooling cycle. The Hot Gas Re−Heat option includesadditional valves in the liquid line and discharge line ofeach refrigerant circuit, a small reheat condenser coildownstream of the evaporator, and Motormastervariable−speed control of some or all outdoor fans.Operation of the revised refrigerant circuit for eachmode is described below.
The Hot Gas Re−Heat system provides threesub−modes of operation: Cool, Reheat1, and Reheat2.
Cool mode − provides a normal ratio of Sensible andLatent Cooling effect from the evaporator coil.
Reheat2 − provides normal Latent Cooling but withnull or minimum Sensible Cooling effect delivered tothe space.
The Reheat1 and Reheat2 modes are available whenthe unit is not in a Heating mode and when the LowAmbient Lockout switch is closed.
The following diagrams depict piping for Single Stagecooling units.
Specifications subject to change without notice. 115513 21 3607 00
SEQUENCE OF OPERATION (cont.)
CONDENSER COIL HOT GAS RE-HEAT COIL
EVAPORATOR COIL
COMPRESSOR
OUTDOOR AIR
INDOOR LEAVING AIR
INDOOR ENTERING AIR
RDVVALVE
CLVVALVE
REHEAT MODEMETERING
DEVICE (TXV)
= CLOSED VALVE
= OPEN VALVE
C12702B
Normal Cooling Mode − Hot Gas Re−Heat System with Single Stage Cooling
RDVVALVE
CLVVALVE
CONDENSER COIL
EVAPORATOR COIL
COMPRESSOR
OUTDOOR AIR
INDOOR LEAVING AIR
INDOOR ENTERING AIR
REHEAT MODEMETERING
DEVICE (TXV)
= CLOSED VALVE= OPEN VALVE
HOT GAS RE-HEAT COIL
C12703B
Subcooling Mode (Reheat 1) − Hot Gas Re−Heat System with Single Stage Cooling
RDVVALVE
CLVVALVE
CONDENSER COIL
EVAPORATOR COIL
COMPRESSOR
OUTDOOR AIR
INDOOR LEAVING AIR
INDOOR ENTERING AIR
REHEAT MODEMETERING
DEVICE (TXV)
= CLOSED VALVE= OPEN VALVE
HOT GAS RE-HEAT COIL
C12704B
Hot Gas Reheat Mode (Reheat2) − Hot Gas Re−Heat System with Single Stage Cooling
Specifications subject to change without notice.116 513 21 3607 00
GUIDE SPECIFICATIONS − RAH036−150Note about this specification:
This specification is in the “Masterformat” as published by the Construction Specification Institute. Please feel freeto copy this specification directly into your building spec.
1. Interior cabinet surfaces shall be insulated with a minimum 1/2−in. thick, minimum 1 1/2 lb density, flexiblefiberglass 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. Electric 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 HVAC23 09 13.23 Sensors and Transmitters23 09 13.23.A. Thermostats
1. Thermostat musta. energize both “W” and “G” when calling for heat.b. have capability to energize 2 different stages of cooling, and 2 different stages of heating.c. include capability for occupancy scheduling.
23 09 33 Electric and Electronic Control System for HVAC23 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 breakeron the 24−v transformer side. Transformer shall have 75VA capability.
2. Shall utilize color−coded wiring.3. Shall include a central control terminal board to conveniently and safely provide connection points for vital
control functions such as: smoke detectors, phase monitor, economizer, thermostat, DDC control options,and low and high pressure switches.
4. Unit shall include a minimum of one 8−pin screw terminal connection board for connection of control wir-ing.
23 09 33.23.B. Safeties:1. Compressor over−temperature, over current.2. Low−pressure switch.
a. Units with 2 compressors shall have different sized connectors for the circuit 1 and circuit 2 low andhigh pressure switches. They shall physically prevent the cross−wiring of the safety switches betweencircuits 1 and 2.
b. Low pressure switch shall use different color wire than the high pressure switch. The purpose is toassist the installer and service technician to correctly wire and or troubleshoot the rooftop unit.
3. High−pressure switch.
Specifications subject to change without notice. 117513 21 3607 00
a. Units with 2 compressors shall have different sized connectors for the circuit 1 and circuit 2 low andhigh pressure switches. They shall physically prevent the cross−wiring of the safety switches betweencircuits 1 and 2.
b. High pressure switch shall use different color wire than the low pressure switch. The purpose is toassist the installer and service technician to correctly wire and or troubleshoot the rooftop unit.
4. Automatic reset, motor thermal overload protector.23 09 93 Sequence of Operations for HVAC Controls
23 40 13 Panel Air Filters23 40 13.13 Decentralized, Rooftop Units:23 40 13.13.A. Standard filter section
1. Shall consist of factory−installed, low velocity, throwaway 2−in. thick fiberglass filters of commerciallyavailable sizes.
2. Unit shall use only one filter size. Multiple sizes are not acceptable.3. Filters shall be accessible through an access panel with “no−tool” removal as described in the unit cabinet
section of this specification (23 81 19.13.G).23 81 19 Self−Contained Air Conditioners
23 81 19.13 Small−Capacity Self−Contained Air Conditioners (RAH036−150)23 81 19.13.A. General
1. Outdoor, rooftop mounted, electrically controlled, heating and cooling unit utilizing a(n) hermetic scrollcompressor(s) for cooling duty and gas combustion for heating duty.
2. Factory assembled, single−piece heating and cooling rooftop unit. Contained within the unit enclosureshall be all factory wiring, piping, controls, and special features required prior to field start−up.
3. Unit shall use 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 Assurance1. Unit meets ASHRAE 90.1 minimum efficiency requirements.2. 3 phase units are Energy Star qualified.3. Unit shall be rated in accordance with AHRI Standards 210/240 and 340/360.4. Unit shall be designed to conform to ASHRAE 15.5. Unit shall be UL−tested and certified in accordance with ANSI Z21.47 Standards and UL−listed and certi-
fied 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 speci-
men).8. Unit shall be designed in accordance with ISO 9001, and shall be manufactured in a facility registered by
ISO 9001.9. Roof curb shall be designed to conform to NRCA Standards.
10. Unit shall be subjected to a completely automated run test on the assembly line. The data for each unitwill be stored at the factory, and must be available upon request.
11. Unit shall be designed in accordance with UL Standard 1995, including tested to withstand rain.12. Unit shall be constructed to prevent intrusion of snow and tested to prevent snow intrusion into the control
box up to 40 mph.13. Unit shake tested to assurance level 1, ASTM D4169 to ensure shipping reliability.14. High Efficient Motors listed shall meet section 313 of the Energy Independence and Security Act of 2007
(EISA 2007).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.D. Project Conditions1. As specified in the contract.
23 81 19.13.E. Operating Characteristics1. Unit shall be capable of starting and running at 125�F (52�C) ambient outdoor temperature, meeting max-
imum load criteria of AHRI Standard 210/240 or 340/360 at 10% voltage.
Specifications subject to change without notice.118 513 21 3607 00
2. Compressor with standard controls shall be capable of operation down to 35�F (2�C), ambient outdoortemperatures. Accessory low ambient kits shall be available if operation below 35�F (2�C), is required.See below for head pressure control package or winter start kit.
3. Unit shall discharge supply air vertically or horizontally as shown on contract drawings.4. Unit shall be factory configured for vertical supply & return configurations.5. Unit shall be field convertible from vertical to horizontal airflow on all models. No special kit required on
04−12 models. Supply duct kit required for 150 size model only.6. Unit shall be capable of mixed operation: vertical supply with horizontal return or horizontal supply with
1. Main power supply voltage, phase, and frequency must match those required by the manufacturer.23 81 19.13.G. 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.
3. Evaporator fan compartment interior cabinet insulation shall conform to AHRI Standards 210/240 or340/360 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 fiberglassinsulation shall be used in the 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 Raila. Unit shall have base rails on a minimum of 3 sides.b. Holes shall be provided in the base rails for rigging shackles to facilitate maneuvering and overhead
rigging.c. Holes shall be provided in the base rail for moving the rooftop by fork truck.d. Base rail shall be a minimum of 16 gauge thickness.
6. Condensate pan and connections:a. Shall be an internally sloped condensate drain pan made of a non−corrosive material.b. Shall comply with ASHRAE Standard 62.c. Shall use a 3/4” −14 NPT drain connection, possible either through the bottom or end of the drain
pan. Connection shall be made per manufacturer’s recommendations.7. Top panel:
a. Shall be a single piece top panel on 036 thru 120 sizes, two piece on 150 size.8. Electrical Connections
a. All unit power wiring shall enter unit cabinet at a single, factory−prepared, knockout location.b. Thru−the−base capability
(1.) Standard unit shall have a thru−the−base electrical location(s) using a raised, embossed portionof the unit basepan.
(2.) Optional, factory−approved, water−tight connection method must be used for thru−the−baseelectrical connections.
(3.) No basepan penetration, other than those authorized by the manufacturer, is permitted.9. Component access panels (standard)
a. Cabinet panels shall be easily removable for servicing.b. Unit shall have one factory installed, tool−less, removable, filter access panel.c. Panels covering control box, indoor fan, indoor fan motor, gas components (where applicable), and
compressors shall have molded composite handles.d. Handles shall be UV modified, composite, 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.H. Coils1. Standard Aluminum Fin/Copper Tube Coils:
a. Standard evaporator and condenser coils shall have aluminum lanced plate fins mechanically bondedto seamless internally grooved copper tubes with all joints brazed.
b. Evaporator coils shall be leak tested to 150 psig, pressure tested to 450 psig, and qualified to UL1995 burst test at 1775 psig.
Specifications subject to change without notice. 119513 21 3607 00
c. Condenser coils shall be leak tested to 150 psig, pressure tested to 650 psig, and qualified to UL1995 burst test at 1980 psig.
2. Optional Pre−coated aluminum−fin condenser coils (3 phase models only):a. Shall have a durable epoxy−phenolic coating to provide protection in mildly corrosive coastal environ-
ments.b. Coating shall be applied to the aluminum fin stock prior to the fin stamping process to create an inert
barrier between the aluminum fin and copper tube.c. Epoxy−phenolic barrier shall minimize galvanic action between dissimilar metals.
3. Optional Copper−fin evaporator and condenser coils (3 phase models only):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 po-
tential for galvanic corrosion between coil and pan.4. Optional E−coated aluminum−fin evaporator and condenser coils (3 phase models only):
a. Shall have a flexible epoxy polymer coating uniformly applied to all coil surface areas without materialbridging between fins.
b. Coating process shall ensure complete coil encapsulation of tubes, fins and headers.c. Color shall be high gloss black with gloss per ASTM D523−89.d. Uniform dry film thickness from 0.8 to 1.2 mil on all surface areas including fin edges.e. Superior hardness characteristics of 2H per ASTM D3363−92A and cross−hatch adhesion of 4B−5B
per ASTM D3359−93.f. Impact resistance shall be up to 160 in.−lb (ASTM D2794−93).g. Humidity and water immersion resistance shall be up to minimum 1000 and 250 hours respectively
(ASTM D2247−92 and ASTM D870−92).h. Corrosion durability shall be confirmed through testing to be no less than 1000 hours salt spray per
1. Refrigerant circuit shall include the following control, safety, and maintenance features:a. Thermostatic Expansion Valve (TXV) shall help provide optimum performance across the entire
operating range. Shall contain removable power element to allow change out of power element andbulb without removing the valve body.
b. Refrigerant filter drier.c. Service gauge connections on suction and discharge lines.d. Pressure gauge access through a specially designed access port in the top panel of the unit.
2. There shall be gauge line access port in the skin of the rooftop, covered by a black, removable plug.a. The plug shall be easy to remove and replace.b. When the plug is removed, the gauge access port shall enable maintenance personnel to route their
pressure gauge lines.c. This gauge access port shall facilitate correct and accurate condenser pressure readings by enabling
the reading with the compressor access panel on.d. The plug shall be made of a leak proof, UV−resistant, composite material.
3. Compressorsa. Unit shall use one fully hermetic, scroll compressor for each independent refrigeration circuit.b. Models shall be available with single compressor/single stage cooling designs on 036−072 sizes and
2 compressor/2−stage cooling models on 090−150 sizes.c. Compressor motors shall be cooled by refrigerant gas passing through motor windings.d. Compressors shall be internally protected from high discharge temperature conditions.e. Compressors shall be protected from an over−temperature and over−amperage conditions by an in-
ternal, motor overload device.f. Compressor shall be factory mounted on rubber grommets.g. Compressor motors shall have internal line break thermal, current overload and high pressure differ-
ential protection.h. Crankcase heaters shall not be required for normal operating range, unless provided by the factory.
23 81 19.13.J. Filter Section1. Filters access is specified in the unit cabinet section of this specification.2. Filters shall be held in place by a pivoting filter tray, facilitating easy removal and installation.3. Shall consist of factory−installed, low velocity, throw−away 2−in. thick fiberglass filters.4. Filters shall be standard, commercially available sizes.
Specifications subject to change without notice.120 513 21 3607 00
5. Only one size filter per unit is allowed.23 81 19.13.K. Evaporator Fan and Motor
1. Evaporator fan motor:a. Shall have permanently lubricated bearings.b. Shall have inherent automatic−reset thermal overload protection or circuit breaker.c. Shall have a maximum continuous bhp rating for continuous duty operation; no safety factors above
that rating shall be required.2. Electric Drive (Direct Drive) X13 – 5 Speed/Torque Evaporator Fan:
a. Multi speed motor with easy quick adjustment settings.b. Blower fan shall be double−inlet type with forward−curved blades.c. Shall be constructed from steel with a corrosion resistant finish and dynamically balanced.d. Standard on all 036−060 models with 208/230−1−60 operation without Hot Gas Re−Heat.e. Standard on all 036−060 3−phase models without Hot Gas Re−Heat, with optional belt drive.
3. Belt−driven Evaporator Fan:a. Belt drive shall include an adjustable−pitch motor pulley.b. Shall use sealed, permanently lubricated ball−bearing type.c. Blower fan shall be double−inlet type with forward−curved blades.d. Shall be constructed from steel with a corrosion resistant finish and dynamically balanced.e. Standard on all 036−072 size and 036−060 size models with Hot Gas Re−Heat. Optional on all
036−060 3−phase models.23 81 19.13.L. Condenser Fans and Motors
1. Condenser fan motors:a. Shall be a totally enclosed motor.b. Shall use permanently lubricated bearings.c. Shall have inherent thermal overload protection with an automatic reset feature.d. Shall use a shaft−down design on 036−150 models.
2. Condenser Fans:a. Shall be a direct−driven propeller type fan.b. Shall have galvalum blades riveted to corrosion−resistant steel spiders and shall be dynamically bal-
anced.23 81 19.13.M. Special Features, Options and Accessories
1. 2−speed indoor fan motor for 2−stage cooling models only:a. Evaporator fan motor:
(1.) Shall have permanently lubricated bearings.(2.) Shall have a maximum continuous bhp rating for continuous duty operation; no safety factors
above that rating.(3.) Shall be Variable Frequency duty and 2−speed control.(4.) Shall contain motor shaft grounding ring to prevent electrical bearing fluting damage by safely
diverting harmful shaft voltages and bearing currents to ground.2. Variable Frequency Drive (VFD). Only available on 2−speed indoor fan motor option:
a. Shall be installed inside the unit cabinet, mounted, wired and tested.b. Shall contain Electromagnetic Interference (EMI) frequency protection.c. Insulated Gate Bi−Polar Transistors (IGBT) used to produce the output pulse width modulated
(PWM) waveform, allowing for quiet motor operation.d. Self diagnostics with fault and power code LED indicator. Field accessory Display Kit available for
further diagnostics and special setup applications.e. RS485 capability standard.f. Electronic thermal overload protection.g. 5% swinging chokes for harmonic reduction and improved power factor.h. All printed circuit boards shall be conformal coated.
3. Integrated EconoMi$er IV, EconoMi$er2, and EconoMi$er X standard leak rate models. (Factory installedon 3 phase models only. Field installed on all 3 and 1 phase models)a. Integrated, gear driven opposing modulating blade design type capable of simultaneous economizer
and compressor operation.b. Independent modules for vertical or horizontal return configuration shall be available. Vertical return
modules shall be available as a factory installed option.
Specifications subject to change without notice. 121513 21 3607 00
c. Damper blades shall be galvanized steel with composite gears. Plastic or composite blades on intakeor return shall not be acceptable.
d. Shall include all hardware and controls to provide free cooling with outdoor air when temperatureand/or humidity are below setpoints.
e. Shall be equipped with gear driven dampers for both the outdoor ventilation air and the return air forpositive air stream control.
f. Standard leak rate shall be equipped with dampers not to exceed 2% leakage at 1 in. wg pressuredifferential.
g. Economizer controller on EconoMi$er IV models shall be the Honeywell W7212 that provides:(1.) Combined minimum and DCV maximum damper position potentiometers with compressor stag-
ing relay.(2.) Functions with solid state analog enthalpy or dry bulb changeover control sensing.(3.) Contain LED indicates for: when free cooling is available, when module is in DCV mode, when
exhaust fan contact is closed.h. Economizer controller on EconoMi$er X models shall be the Honeywell W7220 that provides:
(1.) 2−line LCD interface screen for setup, configuration and troubleshooting(2.) On−board Fault Detection and Diagnostics (FDD) that senses and alerts when the economizer is
not operating properly, per California Title 24.(3.) Sensor failure loss of communication identification(4.) Automatic sensor detection(5.) Capabilities for use with multiple−speed indoor fan systems(6.) Utilize digital sensors: Dry bulb and Enthalpy
i. Shall be capable of introducing up to 100% outdoor air.j. Shall be equipped with a barometric relief damper capable of relieving up to 100% return air and con-
tain seals that meet ASHRAE 90.1 requirements.k. Shall be designed to close damper(s) during loss−of−power situations with spring return built into mo-
tor.l. Dry bulb outdoor air temperature sensor shall be provided as standard. Enthalpy sensor is also avail-
able on factory installed only. Outdoor air sensor setpoint shall be adjustable and shall range from 40to 100° F / 4 to 38° C. Additional sensor options shall be available as accessories.
m. 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%.
n. The economizer shall maintain minimum airflow into the building during occupied period and providedesign ventilation rate for full occupancy.
o. Dampers shall be completely closed when the unit is in the unoccupied mode.p. Economizer controller shall accept a 2−10 Vdc 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.q. Compressor lockout temperature on W7220 is adjustable from −45° F to 80° F, set at a factory de-
fault of 32° F. Others shall open at 35° F (2�C) and closes at 50° F (10° C)r. Actuator shall be direct coupled to economizer gear. No linkage arms or control rods shall be accept-
able.s. Economizer controller shall provide indications when in free cooling mode, in the DCV mode, or the
exhaust fan contact is closed.4. Integrated EconoMi$er 2, and EconoMi$er X Ultra Low Leak rate models. (Factory installed on 3 phase
models only. Field installed on all 3 and 1 phase models)a. Integrated, gear driven opposing modulating blade design type capable of simultaneous economizer
and compressor operation.b. Independent modules for vertical or horizontal return configuration shall be available. Vertical return
modules shall be available as a factory installed option.c. Damper blades shall be galvanized steel with composite gears. Plastic or composite blades on intake
or return shall not be acceptable.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. Ultra Low Leak design meets California Title 24 section 140.4 and ASHRAE 90.1 requirements of 4
cfm per sq. ft. on the outside air dampers and 10 cfm per sq. ft. on the return dampers.g. Economizer controller on EconoMi$er X models shall be the Honeywell W7220 that provides:
(1.) 2−line LCD interface screen for setup, configuration and troubleshooting
Specifications subject to change without notice.122 513 21 3607 00
(2.) On−board Fault Detection and Diagnostics (FDD) that senses and alerts when the economizer isnot operating properly, per California Title 24.
(3.) Sensor failure loss of communication identification(4.) Automatic sensor detection(5.) Capabilities for use with multiple−speed indoor fan systems(6.) Utilize digital sensors: Dry bulb and Enthalpy
h. Shall be capable of introducing up to 100% outdoor air.i. Shall be equipped with a barometric relief damper capable of relieving up to 100% return air and con-
tain seals that meet ASHRAE 90.1 requirements.j. Shall be designed to close damper(s) during loss−of−power situations with spring return built into mo-
tor.k. Dry bulb outdoor air temperature sensor shall be provided as standard. Enthalpy sensor is also avail-
able on factory installed only. Outdoor air sensor setpoint shall be adjustable and shall range from 40to 100° F / 4 to 38° C. Additional sensor options shall be available as accessories.
l. 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%.
m. The economizer shall maintain minimum airflow into the building during occupied period and providedesign ventilation rate for full occupancy.
n. Dampers shall be completely closed when the unit is in the unoccupied mode.o. Economizer controller shall accept a 2−10 Vdc 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.p. Compressor lockout temperature on W7220 is adjustable from −45 F to 80 F, set at a factory default
of 32° F. Others shall open at 35° F (2�C) and closes at 50° F (10° C)q. Actuator shall be direct coupled to economizer gear. No linkage arms or control rods shall be accept-
able.r. Economizer controller shall provide indications when in free cooling mode, in the DCV mode, or the
exhaust fan contact is closed.5. Two−Position Damper (Factory installed on 3 Phase Models Only. Field installed on all 3 and 1 Phase
Models)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 damper gear. No linkage arms or control rods shall be acceptable.e. Damper will admit up to 100% outdoor air for applicable rooftop units.f. Damper shall close upon indoor (evaporator) fan shutoff and/or loss of power.g. The damper actuator shall plug into the rooftop unit’s wiring harness plug. No hard wiring shall be
required.h. Outside air hood shall include aluminum water entrainment filter.i. Not available with 2−speed indoor fan motor models.
6. Manual dampera. Manual damper 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.b. Not available with 2−speed indoor fan motor models.
7. Hot Gas Re−Heat Dehumidification System (3 phase models only):a. The Hot Gas Re−Heat Dehumidification System shall be factory−installed and shall provide greater
dehumidification of the occupied space by two modes of dehumidification operations beside its nor-mal design cooling mode:(1.) Subcooling mode further subcools the hot liquid refrigerant leaving the condenser coil when both
temperature and humidity in the space are not satisfied.(2.) Hot gas reheat mode shall mix a portion of the hot gas from the discharge of the compressor
with the hot liquid refrigerant leaving the condenser coil to create a two−phase heat transfer inthe system, resulting in a neutral leaving− air temperature when only humidity in the space is notsatisfied.
(3.) Includes Head Pressure Controller.8. Head Pressure Control Package (MotorMaster)
a. Controller shall control coil head pressure by condenser−fan speed modulation or condenser−fancycling and wind baffles.
Specifications subject to change without notice. 123513 21 3607 00
b. Shall consist of solid−state control and condenser−coil temperature sensor to maintain condensing tem-perature at outdoor ambient temperatures down to −20�F (−29�C).
9. Condenser Coil Hail Guard Assembly (Factory installed option on 3 phase models. Field installed on all 3and 1 phase models)a. Shall protect against damage from hail.b. Shall be louvered design.
10. Unit−Mounted, Non−Fused Disconnect Switch:a. Switch shall be factory−installed, internally mounted.b. National Electric Code (NEC) and UL or ETL approved non−fused switch shall provide unit power
shutoff.c. Shall be accessible from outside the unitd. Shall provide local shutdown and lockout capability.
(1.) Outlet shall be powered from a separate 115/120v power source.(2.) A transformer shall not be included.(3.) Outlet shall be factory−installed and internally mounted with easily accessible 115−v female re-
ceptacle.(4.) Outlet shall include 15 amp GFI receptacles with independent fuse protection.(5.) Outlet shall be accessible from outside the unit.(6.) Outlet shall include a field−installed “Wet in Use” cover.
12. Thru−the−Base Connectors:a. Kits shall provide connectors to permit electrical connections to be brought to the unit through the
unit basepan.b. Minimum of four connection locations per unit.
13. 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 ener-
gized when dampers open past the 0−100% adjustable setpoint on the economizer control.14. Roof Curbs (Vertical):
a. Full perimeter roof curb with exhaust capability providing separate air streams for energy recoveryfrom 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.
15. High−Static Indoor Fan Motor(s) and Drive(s):a. High−static motor(s) and drive(s) shall be factory−installed to provide additional performance range.
16. Condenser Coil Grille:a. Shall protect against damage from hail.b. Shall be of louvered style.
17. Thru−the−Bottom Utility Connectors:a. Kit shall provide connectors to permit gas and electrical connections to be brought to the unit through
the basepan.18. Outdoor Air Enthalpy Sensor:
a. The outdoor air enthalpy sensor shall be used to provide single enthalpy control. When used in con-junction with a return air enthalpy sensor, the unit will provide differential enthalpy control. The sensorallows the unit to determine if outside air is suitable for free cooling.
19. 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.20. Indoor Air Quality (CO2) Sensor:
a. Shall be able to provide demand ventilation indoor air quality (IAQ) control.b. The IAQ sensor shall be available in duct mount, wall mount, or wall mount with LED display. The
setpoint shall have adjustment capability.21. Smoke detectors (factory−installed only):
a. Shall be a Four−Wire Controller and Detector.
Specifications subject to change without notice.124 513 21 3607 00
b. Shall be environmental compensated with differential sensing for reliable, stable, and drift−free sens-itivity.
c. Shall use magnet−activated test/reset sensor switches.d. Shall have tool−less connection terminal access.e. Shall have a recessed momentary switch for testing and resetting the detector.f. Controller shall include:
(1.) One set of normally open alarm initiation contacts for connection to an initiating device circuit ona fire alarm control panel.
(2.) Two Form−C auxiliary alarm relays for interface with rooftop unit or other equipment.(3.) One Form−C supervision (trouble) relay to control the operation of the Trouble LED on a remote
test/reset station.(4.) Capable of direct connection to two individual detector modules.(5.) Can be wired to up to 14 other duct smoke detectors for multiple fan shutdown applications.
22. Winter start kita. Shall contain a bypass device around the low pressure switch.b. Shall be required when mechanical cooling is required down to 25�F (−4�C).c. Shall not be required to operate on an economizer when below an outdoor ambient of 40�F (4�C).
23. Time Guarda. 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.
24. Electric Heat:a. Heating Section
(1.) Heater element open coil resistance wire, nickel−chrome alloy, 0.29 inches inside diameter,strung through ceramic insulators mounted on metal frame. Coil ends are staked and welded toterminal screw slots.
(2.) Heater assemblies are provided with integral fusing for protection of internal heater circuits notexceeding 48 amps each. Auto reset thermo limit controls, magnetic heater contactors (24 v coil)and terminal block all mounted in electric heater control box (minimum 18 ga galvanized steel)attached to end of heater assembly.
25. Hinged access panels:a. Shall provide easy access through integrated quarter turn latches.b. Shall be on major panels of; filter, control box, fan motor and compressor.
26. Display Kit for Variable Frequency Drivea. Kit allows the ability to access the VFD controller programs to provide special setup capabilities and
diagnostics.b. Kit contains display module and communication cable.c. Display Kit can be permanently installed in the unit or used on any 2−speed indoor fan motor system
VFD controller as needed.27. Foil faced insulation
a. Throughout unit cabinet air stream, non−fibrous and cleanable foil faced insulation is used.
Copyright 2015 International Comfort ProductsLewisburg, Tennessee 37091 USA