York YK M3 M3 G4 operation manual Keypad Programming Pull Down Demand Setpoint

Page 16

To Enter PULL DOWN DEMAND Setpoint: (Refer to Fig. 8.)

1.Press and release PULL DOWN DEMAND setpoint key. The following program prompt message is dis- played:

SETPOINT = XXX MIN @ XXX % FLA, XXX MIN LEFT

2.Use Entry keys to enter desired values. For expla- nation, see PULL DOWN DEMAND, page 12. Note that “XX min left” is not an operator entered value.

3.Press and release ENTER key.

PROGRAM MODE, SELECT SETPOINT

 

message is displayed.

LD00957

FIG. 8 – KEYPAD – PROGRAMMING “PULL DOWN

DEMAND” SETPOINT

To Enter CLOCK Setpoint: (Refer to Fig. 9.)

1.Assure Micro Board Program jumper J57 is in “CLKON” position.

2.Press and release CLOCK setpoint key. The follow- ing program prompt message is displayed:

TODAY IS MON 10:30 PM 1/1/92

3.Press ADVANCE DAY / SCROLL key until the pro- gram per day of week appears on the display.

4.Use Entry keys to enter proper time of day.

5.Press AM/PM key to change the AM to PM or vice versa.

6.Use Entry keys to enter proper calendar date,

(MONTH/DAY/YR). If month and day are single digit

LD00958

 

entries, precede the entry with “0”. For example,

 

02/04/88.

 

 

7. Press and release ENTER key.

FIG. 9 – KEYPAD – PROGRAMMING “CLOCK”

SETPOINT

 

 

 

 

PROGRAM MODE, SELECT SETPOINT

 

 

 

message is displayed.

 

 

 

 

 

16

YORK INTERNATIONAL

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Contents Centrifugal Liquid Chillers With Microcomputer Control CenterTable of Contents Nomenclature Description of System and Fundamentals of Operation SectionSystem Operation Description See Fig Detail a Compressor Prerotation Vanes Capacity ControlSection Microcomputer Control Center Microcomputer Control Center and KeypadIntroduction Condenser Refrigerant LevelOperation Control CenterDisplaying System Parameters To Display OIL Pressure To Display Chilled Liquid TemperaturesPsid = HOP LP Offset Pressure To Display Operating Hours and Starts Counter To Display Motor CurrentSystem Setpoints See Programming System Setpoints, Displaying System Setpoints To Display Undervoltage setpoints Press Access Code key ProgrammingMicrocomputer Control Center Programming System SetpointsElectro-Mechanical Starter, refer to Fig Solid State Starter, refer to FigKeypad Programming Pull Down Demand Setpoint SetpointKeypad Programming Daily Schedule Setpoint Keypad Programming Holiday Service Keys PRE-ROTATION Vanes KeysOther Service Keys Pulldn Level = XXX% Setp = XXX% Actual = XXX%Operating Modes Compressor Switch Display MessagesSystem RUN Auto Vanes System Shutdown Messages When Control Center is in Remote mode MON Xxxx AM Evap Trans or Probe Error Then Function Jumper PositionTherefore MON Xxxx AM High Line Voltage MON Xxxx AM High Speed Drain Temp System Operating Procedures START-UP ProcedureOIL Heaters Checking the OIL Level in the OIL ReservoirSTART-UP Chiller OperationCondenser Water Temperature Control Chiller Starting Sequence & Shutdown SequenceEcwt LchwtChecking Operation Operating LOG SheetOperating Inspections See Section DailyWeekly QuarterlyNeed for Maintenance or Service Normal and Safety System ShutdownsSafety Shutdowns Cycling ShutdownsProlonged Shutdown START-UP After Prolonged ShutdownSystem Components Description System ComponentsGeneral CompressorCompressor Lubrication System See Fig Speed Increasing GearsSchematic Drawing YK Compressor Lubrication System OIL Heater Motor DrivelineHeat Exchangers Refrigerant Flow ControlSolid State Starter Optional Microcomputer Control Center See SectionVariable Speed Drive Optional OIL Return System Operational MaintenanceChanging the Dehydrator OIL Charging Procedure OIL ChargeTroubleshooting RiseLEP Operating Setpoints System After Service Operating Analysis Chart Symptom Abnormally LOW Suction PressureSymptom High Cooler Pressure Symptom no OIL Pressure When System Start Button PushedSymptom OIL Pump Vibrates or is Noisy Symptom OIL Pump Fails to Deliver OIL PressureSymptom Reduced OIL Pump Capacity OIL Pressure display keyLeak Testing During Operation MaintenanceConducting R-22 Pressure Test Vacuum Testing System PressuresVacuum Dehydration OperationChecking the Refrigerant Charge During Unit Shutdown Refrigerant ChargingRefrigerant Charge Handling Refrigerant for Dismantling and Repairs Megging the MotorMotor Stator Temperature and Insulation Resistances Condensers and Coolers Testing for Cooler and Condenser Tube Leaks Compressor Electrical ControlsPreventive Maintenance Pressure TestingCompressor Motor Cooler and CondenserElectrical Controls ALL Rights Reserved

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

The York YK M3 M3 G4, YK M3 M3 G4 THRU YK S6 S4 J2, and YK LB LB G4 THRU YK SE SC J4 represent a sophisticated line of HVAC systems engineered for modern commercial applications. These models are celebrated for their innovative designs, energy efficiency, and advanced features, making them a preferred choice among facility managers and building owners.

One of the standout characteristics of the York YK series is its modular construction, which provides unparalleled flexibility in system configuration. This design allows for easy upgrades and expansions as building demands evolve. The YK M3 series, in particular, is equipped with advanced controls that enhance system performance while minimizing energy consumption. With features like variable speed drives and sophisticated control algorithms, these units optimize airflow and refrigerant use, significantly reducing operational costs.

Another notable aspect of the YK M3 M3 G4 is its robust refrigeration technology. Utilizing high-efficiency scroll compressors, these chillers deliver impressive cooling capacities while maintaining high energy efficiency ratings. Integrated with low GWP (Global Warming Potential) refrigerants, they meet modern environmental standards, ensuring compliance with regulations while promoting sustainability.

The YK LB LB G4 and YK SE SC J4 models further enhance York’s portfolio with their compact designs and lower installation footprints. These chillers are ideal for applications where space is at a premium. Additional features include advanced noise reduction technology, allowing for quieter operation compared to traditional HVAC systems, making them suitable for urban environments or buildings where noise control is a priority.

Furthermore, York's commitment to continuous innovation is evident in the incorporation of smart technology across its chiller series. Features such as connectivity options for monitoring and diagnostics through mobile apps or web interfaces empower users to maintain optimal system performance proactively. This connectivity aids in predictive maintenance, enabling timely interventions that extend equipment life and reliability.

Finally, all these high-efficiency chillers are backed by York's renowned service support network, ensuring that customers have access to expert assistance and maintenance services whenever needed. With their exceptional features, modern technologies, and commitment to sustainability, the York YK M3 M3 G4, YK M3 M3 G4 THRU YK S6 S4 J2, and YK LB LB G4 THRU YK SE SC J4 models stand out as leaders in the commercial HVAC market, setting new standards for performance and efficiency.
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