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Unit Description
43
Figure 14: Zone 1 Cool and Zone 2 Defrost
Zone 1 Cool and Zone 2 Defrost
The CIS is closed so high pressure refrigerant
vapor leaves the compressor and flows through
the DPR to the Zone 2 hot gas line and the open
HGS2 into the Zone 2 evaporator. There, the
refrigerant heats the Zone 2 evaporator and
condenses into high pressure liquid. Because the
SLS2 is open, the liquid refrigerant returns to the
compressor through the SLS2, the second suction
line, SLCV2 and the accumulator. The fans stay
off in the Zone 2 evaporator, allowing the coil to
defrost without warming the load.
Due to the low pressure in the second suction line,
little or no refrigerant goes through the Zone 1
evaporator.
In the condensing unit, the CIS valve closes and
opens to regulate head pressure. The purge valve
is opened continuously during defrost to drain the
condenser coil.
Zone 1 Evaporator
1F. Zone 1 Liquid Line Solenoid (LLS1)-Open
2F. Zone 1 Liquid Return Check Valve
(LRCV1)-Closed
3F. Zone 1 Suction Line Check Valve
(SLCV1)-Open
4F. Zone 1 Suction Line Solenoid (SLS1)-Open
5F. Zone 1 Hot Gas Solenoid (HGS1)-Closed
Zone 2 Evaporator
1R. Zone 2 Liquid Line Solenoid (LLS2)-Open
2R. Zone 2 Liquid Return Check Valve
(LRCV2)-Open
3R. Zone 2 Suction Line Check Valve
(SLCV2)-Open
4R. Zone 2 Suction Line Solenoid (SLS2)-Open
5R. Zone 2 Hot Gas Solenoid (HGS2)-Open
Condensing Unit
6. Condenser Inlet Solenoid (CIS)-Closed/Open
(Pressure Dependent)
7. Condenser Inlet Check Valve
(CICV)-Closed/Open
8.Condenser Check Valve (CCV)-Closed
9. Purge Valve (PV)-Open
10. Purge Check Valve (PCV)-Open
1F
2F
4F
3F
9
6
7
8
3R
5R
4R
2R
1R
5F
10
Содержание SPECTRUM TS 30 SR NAD
Страница 4: ...4 ...
Страница 10: ...Table of Contents 10 ...
Страница 20: ...Safety Precautions 20 ...
Страница 51: ...Unit Description 51 Figure 19 Front View Figure 20 Back View AJA1350 AJA1500 ...
Страница 52: ...Unit Description 52 1 On Off Switch Figure 21 Side View 1 ...
Страница 60: ...Unit Description 60 ...
Страница 80: ...SPECTRUM TS Operation 80 ...
Страница 90: ...Electrical Maintenance 90 ...
Страница 100: ...Engine Maintenance 100 Figure 130 Early TK 3 95 Fuel and Oil System Components ...
Страница 102: ...Engine Maintenance 102 Figure 131 Late TK 3 95 Fuel and Oil System Components ...
Страница 104: ...Engine Maintenance 104 Figure 132 TK376 Fuel and Oil System Components ...
Страница 136: ...Refrigeration Maintenance 136 ...
Страница 156: ...Hilliard Clutch Maintenance 156 ...
Страница 158: ...Structural Maintenance 158 ...
Страница 168: ...Remote Evaporator Specifications 168 ...
Страница 170: ...Remote Evaporator Maintenance Inspection Schedule 170 ...
Страница 176: ...Remote Evaporator Electrical Maintenance 176 ...
Страница 180: ...Remote Evaporator Refrigeration Service Operations 180 ...
Страница 182: ...Remote Evaporator Structural Maintenance 182 ...
Страница 184: ...Remote Evaporator System Diagnosis 184 ...
Страница 188: ...Wiring and Schematic Diagrams Index 188 ...
Страница 189: ...189 Wiring Diagram Page 1 of 4 ...
Страница 190: ...190 Wiring Diagram Page 2 of 4 ...
Страница 191: ...191 Wiring Diagram Page 3 of 4 ...
Страница 192: ...192 Wiring Diagram Page 4 of 4 ...
Страница 193: ...193 Schematic Diagram Page 1 of 3 ...
Страница 194: ...194 Schematic Diagram Page 2 of 3 ...
Страница 195: ...195 Schematic Diagram Page 3 of 3 ...
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