Manuals / York / Household Appliance / Heat Pump

York YK M3 M3 G4 THRU YK S6 S4 J2, YK LB LB G4 THRU YK SE SC J4 Section, Front View, 27385A

Models: YK M3 M3 G4 THRU YK S6 S4 J2, YK LB LB G4 THRU YK SE SC J4 YK M3 M3 G4

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SECTION 4

SYSTEM COMPONENTS DESCRIPTION

MICROCOMPUTER

CONTROL CENTER

DISCHARGE

COMPRESSOR

SUCTION

DUAL RELIEF

VALVES

DEHYDRATOR

SIGHT

GLASSES

FRONT VIEW

DISCHARGE LINE

OIL PUMP

STARTER

FORM 160.49-O2

ADAPTER MOTOR

SUPPORT & COVER

MOTOR

COOLER

27385A

REFRIGERANT

CHARGING VALVE

27382A

OIL RESERVOIR/

PUMP

CONDENSER

FIG. 17 – SYSTEM COMPONENTS

YORK INTERNATIONAL

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York YK M3 M3 G4 THRU YK S6 S4 J2, YK LB LB G4 THRU YK SE SC J4 Section, System Components Description, Front View, 27385A

FAQ

What are the main components of York Heat Pump?

The main components include the microcomputer control center, discharge compressor, suction dual relief valves, dehydrator, and sight glasses.

How many models of York Heat Pump are covered in this manual?

The manual covers models YK M3 M3 G4, YK M3 M3 G4 THRU YK S6 S4 J2, YK LB LB G4 THRU YK SE SC J4.

What is included in the front view of the system components?

The front view includes the discharge line, oil pump, starter, adapter motor, support & cover, motor cooler, refrigerant charging valve, oil reservoir/pump, and condenser.

Contents

W ARNING MILLENNIUM TMREFERENCE INSTRUCTIONS TABLE OF CONTENTSDESCRIPTION FORM NOR-22UNITS NOMENCLATURER-134a SYSTEM OPERATION DESCRIPTION See Fig SECTIONCAPACITY CONTROL FIG. 3 - MICROCOMPUTER CONTROL CENTER AND KEYPAD SECTION MICROCOMPUTER CONTROL CENTERINTRODUCTION OPERATION CONTROL CENTERDISPLAYING SYSTEM PARAMETERS To Display REFRIGERANT PRESSURE To Display CHILLED LIQUID TEMPERATURESTo Display OIL PRESSURE To Display SSS MOTOR CURRENT / VOLTSTo Display MOTOR CURRENT is displayedTo Display OPERATING HOURS and STARTS COUNTER SYSTEM SETPOINTSPage DISPLAYING SYSTEM SETPOINTS Solid State Starter Applications Only To Display REMOTE RESET TEMP RANGE Setpoint1.Press ACCESS CODE key PROGRAMMINGTHE MICROCOMPUTER CONTROL CENTER PROGRAMMING SYSTEM SETPOINTSSolid State Starter, refer to Fig Electro-MechanicalStarter, refer to FigTo Enter PULL DOWN DEMAND Setpoint Refer to Fig 3.Press and release ADVANCE DAY/SCROLL key.The following prompt message is displayed To Enter REMOTE/ RESET TEMP RANGE Setpoint Refer to Fig PRE-ROTATIONVANES KEYS SERVICE KEYSOTHER SERVICE KEYS 1.Press ACCESS CODE key OPERATING MODESDISPLAY MESSAGES COMPRESSOR SWITCHTherefore SYSTEM SHUTDOWN MESSAGES when Control Center is in REMOTE mode Phase rotation/loss JUMPER POSITION FUNCTIONSolid State Starter applications only Solid State Starter applications onlySolid State Starter applications only MON XX XX AM - HIGH SPEED DRAIN TEMP MON XX XX AM - AUX SAFETY SHUTDOWNMON XX XX AM - OPEN DRAIN TEMP THERMOCOUPLE MON XX XX AM - DC UNDERVOLTAGESTART-UPPROCEDURE fused disconnect switch to the starter orSECTION and remains energized as long as theCHILLER OPERATION SYSTEM STARTING & SHUTDOWN SEQUENCE Condenser Water Temperature ControlOPERATOR INITIATED OPERATING LOG SHEET CHECKING OPERATIONDaily OPERATING INSPECTIONS - See SectionWeekly QuarterlyNORMAL AND SAFETY SYSTEM SHUTDOWNS NEED FOR MAINTENANCE OR SERVICESAFETY SHUTDOWNS CYCLING SHUTDOWNSSTART-UPAFTER PROLONGED SHUTDOWN PROLONGED SHUTDOWNSYSTEM COMPONENTS DESCRIPTION SECTIONFRONT VIEW 27385ACOMPRESSOR GENERALCAPACITY CONTROL COMPRESSOR LUBRICATION SYSTEM See FigLD00951 MOTOR DRIVELINE OIL HEATERHEAT EXCHANGERS REFRIGERANT FLOW CONTROLSOLID STATE STARTER Optional MICROCOMPUTER CONTROL CENTER See SectionVARIABLE SPEED DRIVE Optional ACTUAL LEVEL = XXX% LEVEL SETP = XXX%SECTION OPERATIONAL MAINTENANCEOIL RETURN SYSTEM THE OIL CHARGE OIL CHARGING PROCEDURESECTION TROUBLESHOOTINGYORK INTERNATIONAL YORK INTERNATIONAL 2. SYMPTOM ABNORMALLY LOW SUCTION PRESSURE 1. SYMPTOM ABNORMALLY HIGH DISCHARGE PRESSURE3. SYMPTOM HIGH COOLER PRESSURE RESULTS11. SYMPTOM REDUCED OIL PUMP CAPACITY 7. SYMPTOM OIL PUMP VIBRATES OR IS NOISYRESULTS POSSIBLE CAUSESECTION LEAK TESTING DURING OPERATIONRENEWAL PARTS CHECKING SYSTEM FOR LEAKSVACUUM TESTING VACUUM DEHYDRATION CHECKING THE REFRIGERANT CHARGE REFRIGERANT CHARGINGDURING UNIT SHUTDOWN MEGGING THE MOTOR HANDLING REFRIGERANT FOR DISMANTLING AND REPAIRSLD00476 Open MotorsTUBE CLEANING PROCEDURES CLEANING COOLER AND CONDENSER TUBESCOMMERCIAL ACID CLEANING GENERALTESTING FOR COOLER AND CONDENSER TUBE LEAKS ELECTRICAL CONTROLS COMPRESSORSECTION PRESSURE TESTINGCOMPRESSOR COMPRESSOR MOTORELECTRICAL CONTROLS Copyright by York International Corporation P.O. Box 1592, York, Pennsylvania USAALL RIGHTS RESERVED Form 160.49-O21296