York MILLENNIUM YS - Refrigerant Schematic

York MILLENNIUM YS

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36 YORK INTERNATIONAL

Oil Cooler

Inlet Oil

Outlet Oil

Refrigerant

Gas to Evaporator

Refrigerant

Charging Valve

Manual Isolation

Valve

Metering

Orifice

Manual

Throttling

Valve

Manual Isolation

Valve

Sub Cooled

Liquid Refrigerant

Variable Orifice

Solenoid Valve

Liquid Refrigerant

to Evaporator

FIG. 22 – REFRIGERANT SCHEMATIC

LD04301

Operation

Table of Contents

Nomenclature2
Table of Contents3
Section 1 Installation5
- General5
- Inspection6
- Data Plate6
- Location6
- Foundation6
- Clearance6
- Rigging7
- Weights - English, R-22 and R-134A Units, 50 and 60 Hz8
- Weights - SI, R-22 and R-134A Units, 50 and 60 Hz10
- Locating and Installing Isolator Pads12
- Checking the Isolator Pad Deflection12
- Standard Neoprene Vibration Isolator Pad Mounts13
- Overall Dimensions - English, S0 Thru S3 Compressor14
- Overall Dimensions - English, S4 and S5 Compressor15
- Installing Optional Spring Isolators18
- Spring Isolators18
- Piping Connections19
  - Check for Piping Alignment19
- Cooler and Condenser Water Piping20
  - Cooling Units - Chilled Water20
  - Cooling Units - Condenser Water Circuit20
  - Stop Valves20
  - Flow Switches (Field Installed)20
  - Drain and Vent Valves20
  - Checking Piping Circuits and Venting Air20
- Schematic of a Typical Piping Arrangement for Cooling Units20
- Refrigerant Relief Piping21
Typical Refrigerant Vent Piping from Relief Valves21
Typical Refrigerant Vent Piping from Rupture Disk22
- Unit Piping23
- Control Wiring23
Power Wiring23
- Unit with Electro-Mechanical Starter23
- Refrigerant Relief Characteristics23
  - Unit with Solid State Starter (Optional)24
- Insulation24
- Insulation Check - Request for Start-Up Service24
YS Motor Connections (Electro-Mechanical Starter Application)25
Installation Check List and Request for Authorized Start-Up Engineer26
Section 2 Operation27
- Basic Description27
- Components27
Component Layout Drawing28
- Condensing Water Temperature29
  - R-22 Refrigerant29
  - R-134A Refrigerant29
- Oil System29
Oil Filter Location29
Oil Piping Schematic30
Oil Pressure Transducer Location31
Eductor Block31
Oil Separator Schematic32
- Oil Eductor Circuit33
- Liquid Refrigerant Circuit34
  - Dual Service Chillers34
Filter Driers and Oil Eductor34
- Variable Orifice Pressure Differential Setpoints34
Oil Eductor Schematic35
Refrigerant Schematic36
- Capacity Control37
Capacity Control Piping Schematic38
Section 3 Maintenance39
- General39
- Compressor Oil39
  - Changing Compressor Oil39
- York Oil Types39
- Compressor Oil Limits39
  - Oil Level41
- Oil Filter41
- Oil Filter Replacement41
  - Single Oil Filter41
  - Dual Oil Filters41
Oil Heater and Sight Glass41
- Filter Drier Replacement42
- Motor42
- Determining Correct Refrigerant Charge Level42
- Refrigerant Charge Level42
- Water Flow Velocities44
  - Vibration Analysis45
Transducer Measurement Points45

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