Unit Description
24
Zone 1 Cool, Zone 2 Cool, and
Zone 3 Cool
High pressure refrigerant vapor leaves the
compressor and flows through the open CIS to the
condenser where the refrigerant condenses into
high pressure liquid. The liquid refrigerant flows
through the receiver tank into the liquid lines.
The LLS is open so some of the refrigerant flows
through the Zone 1 expansion valve into the
Zone 1 evaporator. There the liquid refrigerant
cools the Zone 1 evaporator as it evaporates into
low pressure vapor. The refrigerant returns to the
compressor through the SLCV and the
accumulator.
The LLS2 is open so some of the refrigerant flows
through the Zone 2 expansion valve into the
Zone 2 evaporator. There the liquid refrigerant
cools the Zone 2 evaporator as it evaporates into
low pressure vapor. The refrigerant returns to the
compressor through the SLS2, the suction line, the
SLCV2, and the accumulator.
The LLS3 is open so some of the refrigerant flows
through the Zone 3 expansion valve into the
Zone 3 evaporator. There the liquid refrigerant
cools the Zone 3 evaporator as it evaporates into
low pressure vapor. The refrigerant returns to the
compressor through the SLS3, the suction line, the
SLCV3, and the accumulator.
Host Unit and Zone 1 Evaporator
1. Liquid Line Solenoid (LLS)—Open
2. Liquid Return Check Valve (LRCV)—Closed
3. Suction Line Check Valve (SLCV)—Open
4. Suction Line Solenoid (SLS)—Open
5. Hot Gas Solenoid (HGS)—Closed
6. Condenser Inlet Solenoid (CIS)—Open
7. Condenser Inlet Check Valve (CICV)—Open
8. Receiver Tank Pressure Solenoid
(RTPS)—Closed
9. Condenser Check Valve (CCV)—Open
10. Bypass Hand Valve
11. Purge Valve (PV)—Closed
12. Purge Check Valve (PCV)—Closed
Zone 2 Evaporator
1C. Zone 2 Liquid Line Solenoid (LLS2)—Open
2C. Zone 2 Liquid Return Check Valve
(LRCV2)— Closed
3C. Zone 2 Suction Line Check Valve
(SLCV2)— Open
4C. Zone 2 Suction Line Solenoid (SLS2)—Open
5C. Zone 2 Hot Gas Solenoid (HGS2)—Closed
Zone 3 Evaporator
1R. Zone 3 Liquid Line Solenoid (LLS3)—Open
2R. Zone 3 Liquid Return Check Valve
(LRCV3)— Closed
3R. Zone 3 Suction Line Check Valve
(SLCV3)— Open
4R. Zone 3 Suction Line Solenoid (SLS3)—Open
5R. Zone 3 Hot Gas Solenoid (HGS3)—Closed
Summary of Contents for Spectrum DE 30-2
Page 4: ...4...
Page 12: ...Safety Precautions 12...
Page 16: ...Specifications 16...
Page 31: ...Unit Description 31 1 Access Panels 2 Defrost Dampers Figure 12 Back View of Unit 1 2 AGA215...
Page 42: ...Operating Instructions 42...
Page 48: ...Electrical Maintenance 48...
Page 106: ...Structural Maintenance 106...
Page 110: ...Mechanical Diagnosis 110...
Page 114: ...Remote Evaporator Specifications 114...
Page 116: ...Remote Evaporator Maintenance Inspection Schedule 116...
Page 122: ...Remote Evaporator Electrical Maintenance 122...
Page 126: ...Remote Evaporator Refrigeration Service Operations 126...
Page 128: ...Remote Evaporator Structural Maintenance 128...
Page 130: ...Remote Evaporator System Diagnosis 130...
Page 134: ...Wiring and Schematic Diagrams Index 134...
Page 135: ...135 Schematic Diagram Page 1 of 2...
Page 136: ...136 Schematic Diagram Page 2 of 2...
Page 137: ...137 Wiring Diagram Page 1 of 4...
Page 138: ...138 Wiring Diagram Page 2 of 4...
Page 139: ...139 Wiring Diagram Page 3 of 4...
Page 140: ...140 Wiring Diagram Page 4 of 4...