York DM090 installation manual Table of Contents

Page 2

035-17311-003-A-0704

TABLE OF CONTENTS

GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . 5 INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 REFERENCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 APPROVALS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 NOMENCLATURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

INSTALLATION SAFETY INFORMATION . . . . . . . . . . . . . 10 PRECEDING INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . 10 LIMITATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 LOCATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 RIGGING AND HANDLING . . . . . . . . . . . . . . . . . . . . . . . . . 11 CLEARANCES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 DUCTWORK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 DUCT COVERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 CONDENSATE DRAIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 COMPRESSORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 FILTERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 THERMOSTAT WIRING . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 POWER AND CONTROL WIRING . . . . . . . . . . . . . . . . . . . 17 POWER WIRING DETAIL . . . . . . . . . . . . . . . . . . . . . . . . . . 17 OPTIONS/ACCESSORIES . . . . . . . . . . . . . . . . . . . . . . . . . 21

ELECTRIC HEAT ACCESSORIES . . . . . . . . . . . . . . . . . . . . . 21 ELECTRIC HEAT OPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 MOTORIZED OUTDOOR DAMPER . . . . . . . . . . . . . . . . . . . . 21 ECONOMIZER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 POWER EXHAUST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 RAIN HOOD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

ECONOMIZER AND POWER EXHAUST SET POINT ADJUSTMENTS AND INFORMATION . . . . . . . . . . . . . . . 22

MINIMUM POSITION ADJUSTMENT . . . . . . . . . . . . . . . . . . . 22 ENTHALPY SET POINT ADJUSTMENT . . . . . . . . . . . . . . . . . 22

POWER EXHAUST DAMPER SET POINT (WITH OR WITHOUT POWER EXHAUST) . . . . . . . . . . . . . . . . . . . . . . . 22 INDOOR AIR QUALITY AQ . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

PHASING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 BLOWER ROTATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 BELT TENSION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 AIR BALANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 CHECKING AIR QUANTITY . . . . . . . . . . . . . . . . . . . . . . . . 31

METHOD ONE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31 METHOD TWO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

SUPPLY AIR DRIVE ADJUSTMENT . . . . . . . . . . . . . . . . . 32

OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

SEQUENCE OF OPERATIONS OVERVIEW . . . . . . . . . . . 33 COOLING SEQUENCE OF OPERATION . . . . . . . . . . . . . . 34

CONTINUOUS BLOWER . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34 INTERMITTENT BLOWER . . . . . . . . . . . . . . . . . . . . . . . . . . .34 NO OUTDOOR AIR OPTIONS . . . . . . . . . . . . . . . . . . . . . . . .34 ECONOMIZER WITH SINGLE ENTHALPY SENSOR - . . . . .34 ECONOMIZER WITH DUAL ENTHALPY SENSORS - . . . . . .34 ECONOMIZER WITH POWER EXHAUST - . . . . . . . . . . . . . .34 MOTORIZED OUTDOOR AIR DAMPERS - . . . . . . . . . . . . . .34 COOLING OPERATION ERRORS . . . . . . . . . . . . . . . . . . . . .35 HIGH-PRESSURE LIMIT SWITCH . . . . . . . . . . . . . . . . . . . . .35 LOW-PRESSURE LIMIT SWITCH . . . . . . . . . . . . . . . . . . . . . .35 FREEZESTAT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35 LOW AMBIENT COOLING . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

SAFETY CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 COMPRESSOR PROTECTION . . . . . . . . . . . . . . . . . . . . . 35

FLASH CODES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36 RESET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36

ELECTRIC HEATING SEQUENCE OF OPERATIONS . . . 36 ELECTRIC HEATING OPERATION ERRORS . . . . . . . . . . 36

TEMPERATURE LIMIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36 SAFETY CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36 LIMIT SWITCH (LS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36 FLASH CODES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36 RESET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36

ELECTRIC HEAT ANTICTPATOR SETPOINTS . . . . . . . . . 36

START-UP (COOLING) . . . . . . . . . . . . . . . . . . . . . . . . . . 37

PRESTART CHECK LIST . . . . . . . . . . . . . . . . . . . . . . . . . . 37 OPERATING INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . 37 POST START CHECK LIST . . . . . . . . . . . . . . . . . . . . . . . . 37

CHARGING THE UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 NORMAL MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . 39

GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

FILTERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39 MOTORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39 OUTDOOR COIL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39

TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . 39

PREDATOR® FLASH CODES . . . . . . . . . . . . . . . . . . . . . . 39 COOLING TROUBLESHOOTING GUIDE . . . . . . . . . . . . . . 41

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Unitary Products Group

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Contents Installation Manual Table of Contents List of Figures List of Tables Inspection Safety ConsiderationsGeneral 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 InchesDetail B Detail a Detail CBottom Duct Openings from Above Ductwork Duct CoversSide Panels with Hole Plugs Condensate Drain Power and Control Wiring Thermostat WiringControl Wire Sizes Power Wiring DetailElectronic Thermostat Field Wiring RLA Electrical Data DM120 10 TON with Power Convenience Outlet 380 11.5 75.0Minimum Supply AIR CFM OPTIONS/ACCESSORIESPhysical Data Economizer and Power Exhaust SET Point Adjustments and InformationEnthalpy SET Point Chart Supply AIR Limitations PhasingBlower Rotation 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* †10 TON Standard Motor Down Shot Blower PERFORMANCE* † 12-1/2 TON Standard Motor Side Shot Blower PERFORMANCE* † 12-1/2 TON Optional Motor Side Shot Blower PERFORMANCE* †Checking AIR Quantity Indoor Blower SpecificationsAIR Balance Method ONE Method TWODRY Coil Delta P Supply AIR Drive Adjustment Motor Sheave Datum Diameters OperationAdditional Static Resistance Sequence of Operations OverviewCooling Sequence of Operation Safety Controls Compressor ProtectionElectric Heating Sequence of Operations Electric Heating Operation ErrorsElectric Heat Limit Setting 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 035-17311-003-A-0704 Unitary 5005 Norman Products York Group Drive 73069
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