York 150, 120 installation manual Unitary 5005 Norman Products York Group Drive 73069

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terminal. If 24 volts is not present, check for loose wiring from the Y1 “OUT” terminal to the Mate-N-Lock plug, a poor connection between the UCB and economizer Mate-N-Lock plugs, loose wiring from the Mate-N-Lock plug to the economizer, back to the Mate-N-Lock plug, and from the Mate-N-Lock plug to the Y1 “ECON” terminal. The economizer control may have faulted and is not returning the 24 volts to the Y1 “ECON” terminal even though the economizer is not providing free cooling. To test the economizer control, disconnect the Mate-N-Locks and jumper between the WHITE and YELLOW wires of the UCB’s Mate-N-Lock plug.

13.The UCB can be programmed to lock out compressor operation during free cooling and in low ambient condi- tions. These options are not enabled by default. They can be checked by local York distributors.

14.If none of the above corrected the error, test the integrity of the UCB. Disconnect the C1 terminal wire and jumper it to the Y1 terminal. DO NOT jump the Y1 to C1 termi- nals. If the compressor engages, the UCB has faulted.

15.If none of the above correct the error, replace the UCB.

Subject to change without notice. Printed in U.S.A.		035-17311-002-A-0803
Copyright © by Unitary Products Group 2003. All rights reserved.		Supersedes: 035-17311-001-A-1202


Unitary	5005	Norman
Products	York	OK
Group	Drive	73069

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Contents Installation Manual Table of Contents List of Figures List of Tables Safety Considerations GeneralInspection Reference½ 12½ Ton Predator Model Number Nomenclature NomenclatureNOMENCLATURE, Additonal Options Johnson UNT Controller, DFS, APS & Phase Monitor Technicoat Condenser Coil, Phase Monitor, & Coil Guard Preceding Installation InstallationInstallation Safety Information Rigging and Handling Unit Temperature LimitationsLocation Point Load Weight Length of Forks Must be a Minimum of 60 InchesUnit Dimensions Unit Clearances Detail CBottom Duct Openings from Above Ductwork Duct CoversSide Panels with Hole Plugs Condensate Drain Thermostat Wiring Control Wire SizesPower and Control Wiring Power Wiring DetailElectronic Thermostat Field Wiring RLA LRA FLA Electrical Data DM120 10 TON with Power Convenience Outlet 380 11.5 75.0Minimum Supply AIR CFM OPTIONS/ACCESSORIESPhysical Data Power Exhaust Minimum Position AdjustmentEnthalpy SET Point Adjustment EconomizerEnthalpy SET Point Chart Phasing Blower RotationSupply AIR Limitations Belt Tension1/2 TON Standard Motor Down Shot Blower PERFORMANCE* † 1/2 TON Optional Motor Down Shot Blower PERFORMANCE* †10 TON Standard Motor Down Shot Blower PERFORMANCE* † 10 TON Optional Motor Down Shot Blower PERFORMANCE* †12-1/2 TON Standard Motor Down Shot Blower PERFORMANCE* † 12-1/2 TON Optional Motor Down Shot Blower PERFORMANCE* †1/2 TON Standard Motor Side Shot Blower PERFORMANCE* † 1/2 TON Optional Motor Side Shot Blower PERFORMANCE* †4965 12-1/2 TON Standard Motor Side Shot Blower PERFORMANCE* † 12-1/2 TON Optional Motor Side Shot Blower PERFORMANCE* †Indoor Blower Specifications AIR BalanceChecking AIR Quantity Method ONE Method TWODRY Coil Delta P Supply AIR Drive Adjustment Operation Additional Static ResistanceMotor Sheave Datum Diameters Sequence of Operations OverviewCooling Sequence of Operation Safety Controls Compressor ProtectionElectric Heating Operation Errors Electric Heat Limit SettingElectric Heating Sequence of Operations Electric Heat Antictpator SetpointsSTART-UP Cooling Charging the Unit10 TON Standard Efficiency Superheat Charging 12.5 TON Standard Efficiency Superheat ChargingPredator Flash Codes Normal Maintenance TroubleshootingGeneral Basic Troubleshooting Flowchart Unit Control Board Flash CodesCooling Troubleshooting Guide Unitary Products Group 035-17311-002-A-0803 Unitary 5005 Norman Products York Group Drive 73069