Sinclair SCV-1400EB, Service Manual

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For SCV-750EB and SCV-1400EB:
Component Wiring diagram label
75kW 140kW Control functions and states
Water pump PUMP
● ●
Non-standard component: After the pump is turned on for 2
minutes, detect the water flow switch continuously. The
compressor can be started only after the water flow is
normal.
Inverter compressor 1 BP1
● ●
Control the outlet water temperature. The operating
increased and decreased frequency is 1Hz/s, and is executed
according to the starting platform.
Inverter compressor 2 BP2
● ●
Inverter fan1 FAN1
● ●
Control According to the exhaust pressure of the outdoor
unit, the initial target windshield is operated for the first
60s, and then correct every 20-60s.
Inverter fan 2 FAN2
● ●
Electronic expansion valve EXV-A
● ●
Step from 0 to 480. Controlled according to discharge
temperature superheat.
Electronic expansion valve EXV-B
● ●
Step 480P
Electronic expansion valve EXV-C
● ●
Step from 0 to 480. Controlled according to temperature
difference between economizer plate heat exchanger inlet
and outlet.
Four-way valve ST1
● ●
Open
Solenoid valve (defrost) SV5
● ●
Closed
Solenoid valve (by pass) SV6
● ●
Open for 600s, then closed.
Solenoid valve (injection) SV8A/B
● ●
Open
Water flow switch Water-SW
● ●
After water pump (field supplied) is turned on for 2min, if
water flow switch is open, water pump stops and water flow
error code appears. The compressor can be started after the
water flow is normal.
Water flow switch heater
● ●
Controlled according to ambient temperature, water inlet
temperature and water outlet temperature.
Crank case heater CCH
●
Controlled according to ambient temperature and discharge
temperature.
For SCV-1800EB:
Component
Wiring diagram
label
180kW Control functions and states
Inverter compressor BP1/2
●
Compressor startup program selected according to ambient
temperature
1 .
DC fan motor FAN
●
Fan run at maximum speed
2
.
Electronic expansion valve
EXV
●
Position (steps) from 0 (fully closed) to 480 (fully open),
controlled according to outdoor ambient temperature,
discharge temperature, suction superheat, compressor speed
and refrigerant system pressure.
Four-way valve
ST1
●
Off