
R-410AZH SERIES 6-1/2 - 12-1/2 Ton60 Hertz GZKDJRRJDGHZ2[JZFJR164015-YIM-A-0905TABLE OF CONTENTSGeneral . . . . . . . . . . . . . . . . . . .
164015-YIM-A-090510 Unitary Products GroupLocationUse the following guidelines to select a suitable location for these units:1. Unit is designed for o
164015-YIM-A-0905Unitary Products Group 11Units may be moved or lifted with a forklift. Slotted openings in the base rails are provided for this purpo
164015-YIM-A-090512 Unitary Products GroupFigure 8: ZH078-120 Physical DimensionsFigure 9: ZH150 Physical DimensionsTable 3: ZH078-150 Unit Accessory
164015-YIM-A-0905Unitary Products Group 13Detail A Detail BFigure 10: ZH078-150 Unit Bottom Duct OpeningsTable 4: ZH078-150 Unit Physical DimensionsUn
164015-YIM-A-090514 Unitary Products GroupFigure 11: ZH078-150 Unit Electrical EntryFigure 12: ZH078-120 Unit Side Duct Openings'LVFRQQHFW6ZLWK
164015-YIM-A-0905Unitary Products Group 15Figure 13: ZH150 Unit Side Duct OpeningsFigure 14: ZH078-150 Unit Left Duct Opening'RW3OXJV
164015-YIM-A-090516 Unitary Products GroupFigure 15: ZH078-150 Roof CurbFigure 16: ZH078-150 Transition Roof CurbDuctworkDuctwork should be designed a
164015-YIM-A-0905Unitary Products Group 17Duct CoversUnits are shipped with the side duct openings covered and a covering over the bottom of the unit.
164015-YIM-A-090518 Unitary Products Groupdesigned for HCFC and CFC refrigerants. Take all necessary precautions to avoid exposure of the oil to the a
164015-YIM-A-0905Unitary Products Group 19Figure 21: Field Wiring Disconnect - Cooling Unit With/Without Electric HeatFigure 22: Field Wiring Disconne
164015-YIM-A-09052 Unitary Products GroupGeneralYork® Predator® units are single package air conditioners with optional gas heating designed for outdo
164015-YIM-A-090520 Unitary Products GroupThermostat WiringThe thermostat should be located on an inside wall approximately 56 inch above the floor wh
164015-YIM-A-0905Unitary Products Group 21Table 8: Electrical Data ZH078-150 Standard Motor - Without Powered Convenience Outlet Size(Tons)VoltCompre
164015-YIM-A-090522 Unitary Products Group120(10)208 17.9 120.0 28.0 3.5 8.2 5.5 0.0None---55.561.070 70E18 13.5 2 37.5 57.1 64.0 70 70E24 18.0 2 50.0
164015-YIM-A-0905Unitary Products Group 23ZH078-150 Alternate Motor - Without Powered Convenience Outlet Size(Tons)VoltCompressors(each)OD FanMotors(
164015-YIM-A-090524 Unitary Products Group120(10)208 17.9 120.0 28.0 3.5 10.9 5.5 0.0None - - - 58.2 63.7 70 80E18 13.5 2 37.5 60.5 67.3 70 80E24 18.0
164015-YIM-A-0905Unitary Products Group 25ZH078-150 Standard Motor - With Powered Convenience Outlet Size(Tons)VoltCompressors(each)OD FanMotors(each)
164015-YIM-A-090526 Unitary Products Group120(10)208 17.9 120.0 28.0 3.5 8.2 5.5 10.0None – – – 65.5 71.0 80 80E18 13.5 2 37.5 69.6 76.5 80 80E24 18.0
164015-YIM-A-0905Unitary Products Group 27ZH078-150 Alternate Motor - With Powered Convenience Outlet Size(Tons)VoltCompressors(each)OD FanMotors(each
164015-YIM-A-090528 Unitary Products Group120(10)208 17.9 120.0 28.0 3.5 8.2 5.5 10.0None – – – 68.2 73.7 80 90E18 13.5 2 37.5 73.0 79.8 80 90E24 18.0
164015-YIM-A-0905Unitary Products Group 29Table 9: ZH078-150 Physical Data ComponentModelsZH078 ZH090 ZH102 ZH120 ZH150Nominal Tonnage 6.5 7.5 8.5 10
164015-YIM-A-0905Unitary Products Group 3Wear safety glasses and work gloves. Use quenching cloth and have a fire extinguisher available during brazin
164015-YIM-A-090530 Unitary Products GroupOptional Electric HeatThe factory-installed heaters are wired for single point power supply. Power supply ne
164015-YIM-A-0905Unitary Products Group 31Optional Gas HeatThese gas-fired heaters have aluminized-steel or optional stainless steel, tubular heat exc
164015-YIM-A-090532 Unitary Products GroupGas ConnectionThe gas supply line can be routed within the space and roof curb, exiting through the unit’s b
164015-YIM-A-0905Unitary Products Group 33Lp Units, Tanks And PipingAll gas heat units are shipped from the factory equipped for natural gas use only.
164015-YIM-A-090534 Unitary Products GroupPower ExhaustThe Power Exhaust can be a factory installed option or a field installed accessory. If factory
164015-YIM-A-0905Unitary Products Group 35Figure 27: Enthalpy Set Point ChartFigure 28: Honeywell Economizer Control W7212PhasingPredator® units are p
164015-YIM-A-090536 Unitary Products GroupBlower RotationCheck for proper supply air blower rotation. If the blower is rotating backwards, the line vo
164015-YIM-A-0905Unitary Products Group 37Figure 30: Altitude/Temperature Correction FactorsThe examples below will assist in determining the airflow
164015-YIM-A-090538 Unitary Products GroupTable 16: ZH Bottom Duct Blower PerformanceZH078 (6.5 Ton) Standard Motor Bottom Duct Blower Performance6.5
164015-YIM-A-0905Unitary Products Group 39ZH090 (7.5 Ton) Standard Motor Bottom Duct Blower Performance7.5 Ton STANDARD MOTOR BOTTOM DUCT BLOWER PERFO
164015-YIM-A-09054 Unitary Products GroupNomenclature3URGXFW &DWHJRU\= $LU&RQG6LQJOH3DFNDJH5D3URGXFW,GHQWLILHU+ +LJK(IILFLHQF\
164015-YIM-A-090540 Unitary Products GroupZH102 (8.5 Ton) Standard Motor Bottom Duct Blower Performance8.5 Ton STANDARD MOTOR BOTTOM DUCT BLOWER PERFO
164015-YIM-A-0905Unitary Products Group 41ZH120 (10 Ton) Standard Motor Bottom Duct Blower Performance10 Ton STANDARD MOTOR BOTTOM DUCT BLOWER PERFORM
164015-YIM-A-090542 Unitary Products GroupZH150 (12.5 Ton) Standard Motor Bottom Duct Blower Performance12.5 Ton STANDARD MOTOR BOTTOM DUCT BLOWER PER
164015-YIM-A-0905Unitary Products Group 43Table 17: ZH Side Duct Blower PerformanceZH078 (6.5 Ton) Standard Motor Side Duct Blower Performance6.5 Ton
164015-YIM-A-090544 Unitary Products GroupZH090 (7.5 Ton) Standard Motor Side Duct Blower Performance7.5 Ton STANDARD MOTOR SIDE DUCT BLOWER PERFORMAN
164015-YIM-A-0905Unitary Products Group 45ZH102 (8.5 Ton) Standard Motor Side Duct Blower Performance8.5 Ton STANDARD MOTOR SIDE DUCT BLOWER PERFORMAN
164015-YIM-A-090546 Unitary Products GroupZH120 (10 Ton) Standard Motor Side Duct Blower Performance10 Ton STANDARD MOTOR SIDE DUCT BLOWER PERFORMANCE
164015-YIM-A-0905Unitary Products Group 47ZH150 (12.5 Ton) Standard Motor Side Duct Blower Performance12.5 Ton STANDARD MOTOR SIDE DUCT BLOWER PERFORM
164015-YIM-A-090548 Unitary Products GroupNOTES FOR TABLE 16 AND 17:• Blower performance includes dry coil and two-inch filters.• Blower performance f
164015-YIM-A-0905Unitary Products Group 493. Use an Inclined Manometer or Magnehelic to determine the pressure drop across the unit. This is the Exter
164015-YIM-A-0905Unitary Products Group 5Nomenclature Additional OptionsAdditional OptionsAA NoneAB Phase MonitorAC Coil GuardAD Dirty Filter SwitchAE
164015-YIM-A-090550 Unitary Products GroupSupply Air Drive AdjustmentAt unit start-up, the measured CFM may be higher or lower than the required CFM.
164015-YIM-A-0905Unitary Products Group 51Table 21: Additional Static ResistanceSize(Tons)Model CFM Cooling Only11. Add these values to the available
164015-YIM-A-090552 Unitary Products GroupOperationCooling Sequence Of OperationFor the Predator® series of units, the thermostat makes a circuit betw
164015-YIM-A-0905Unitary Products Group 53addition. The power exhaust motor is energized 45 seconds after the actuator position exceeds the exhaust fa
164015-YIM-A-090554 Unitary Products GroupCompressor ProtectionIn addition to the external pressure switches, the compressors also have inherent (inte
164015-YIM-A-0905Unitary Products Group 55value below the correct setpoint will give shorter “ON” cycles and may result in the lowering of the tempera
164015-YIM-A-090556 Unitary Products GroupGas ValveThe UCB and ICB continuously monitor the GV.If the ICB senses voltage at the GV when not requested,
164015-YIM-A-0905Unitary Products Group 57Gas Heat Anticipator SetpointsIt is important that the anticipator setpoint be correct. Too high of a settin
164015-YIM-A-090558 Unitary Products GroupShut Down1. Set the thermostat to the lowest temperature setting.2. Turn “OFF” all electric power to unit.3.
164015-YIM-A-0905Unitary Products Group 59Adjust second stage (100% input) pressure first, then adjust first stage (60% input) pressure.1. Turn off al
164015-YIM-A-09056 Unitary Products GroupHA Honeywell Excel 10 Controller with Dirty Filter Switch & Air Proving SwitchHB Honeywell Excel 10 Contr
164015-YIM-A-090560 Unitary Products GroupCharging The UnitAll ZH units use Thermal Expansion Devices. Charge the unit to 10° subcooling.Troubleshooti
164015-YIM-A-0905Unitary Products Group 61Figure 34: Basic Troubleshooting FlowchartFigure 35: Power On Flow Chart0RQLWRU0RQLWRUHG6\VWHPV3UREOHP"
164015-YIM-A-090562 Unitary Products GroupFigure 36: Trip Failure Flow Chart
164015-YIM-A-0905Unitary Products Group 63Cooling Troubleshooting GuideOn calls for cooling, if the compressors are operating but the supply air blowe
164015-YIM-A-090564 Unitary Products Groupout, the UCB may have the compressor in an ASCD. Check the LED for an indication of an ASCD cycle. The ASCD
164015-YIM-A-0905Unitary Products Group 6511. The UCB can be programmed to lock out compressor operation during free cooling and in low ambient condit
164015-YIM-A-090566 Unitary Products Group1. Place the thermostat fan switch in the “ON” position. If the supply air blower motor energizes, go to Ste
164015-YIM-A-0905Unitary Products Group 67
Subject to change without notice. Printed in U.S.A. 164015-YIM-A-0905Copyright © 2005 by Unitary Products Group. All rights reserved. Supersedes: Noth
164015-YIM-A-0905Unitary Products Group 7NR Novar ETC-3 Controller, DFS, APS, Technicoat Evap. & Cond Coils, Phase Monitor, & Coil GuardNS Nov
164015-YIM-A-09058 Unitary Products GroupInstallationInstallation Safety InformationRead these instructions before continuing this appliance installat
164015-YIM-A-0905Unitary Products Group 9After installation, gas fired units must be adjusted to obtain a temperature rise within the range specified
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