Sinclair SCV-1400EB, Service Manual

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For SCV-1800EB:
Component
Wiring
diagram
label
180kW
Control functions and states
Inverter
compressor
BP1/2
●
Controlled according to load requirement from hydronic system.
DC fan motor FAN
●
Controlled according to outdoor heat exchanger pipe temperature.
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
●
On
5.2 Component control during cooling mode
For SCV-900EB:
Component Wiring diagram label 90kW Control functions and states
Inverter compressor A BP1
●
Controlled according to load requirement.
Inverter compressor B BP2
●
DC fan motor A Fan A
●
Controlled according to ambient temperature and discharge
pressure and air side heat exchanger refrigerant temperature.
DC fan motor B Fan B
●
Electronic expansion valve A EXVA
●
Step 480
Electronic expansion valve B EXVB
●
Step from 0 to 480. Controlled according to suction temperature
superheat.
Electronic expansion valve C EXVC
●
Step from 0 to 480. Controlled according to temperature
difference between economizer plate heat exchanger inlet and
outlet.
Four-way valve ST1
●
Closed
Solenoid valve (oil balance) SV4
●
Open for 3min after every 17min.
Solenoid valve (defrost) SV5
●
Closed
Solenoid valve (by pass) SV6
●
Closed
Solenoid valve (injection) SV8A/B
●
Open
Water side heat exchanger
heater
-
●
According to water side heat exchanger anti-freezing
temperature.
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-750EB and SCV-1400EB:
Component Wiring diagram label
75kW 140kW Control functions and states
Inverter compressor 1
BP1
● ●
Control the outlet water temperature. The operating
increased and decreased frequency is 1Hz/s.
Inverter compressor 2
BP2
● ●
Inverter fan1
FAN1
● ●
Control according to the exhaust pressure of the
outdoor unit. Correct every 20-60s, and adjust in
0-32 gears.
Inverter fan 2
FAN2
● ●
Electronic expansion valve
EXV-A
● ●
Step 480.