Sinclair SCV-750EB Service Manual page 31

Four-way valve
Solenoid valve (defrost)
Solenoid valve (by pass)
Solenoid valve (injection)
Water flow switch
Electric auxiliary heater (pipe)
Crank case heater
For SCV-1800EB:
Component
Inverter compressor
DC fan motor
Electronic expansion valve
Four-way valve
Notes: 1. Refer to Table 3-4.1 in Part 3, 5.8 "Outdoor Fan Control".
4.3 Startup Control for Cooling Operation
For SCV-900EB:
Component
DC fan motor A
DC fan motor B
Electronic expansion valve A
Electronic expansion valve B
Electronic expansion valve C
Four-way valve
Solenoid valve (oil balance)
Solenoid valve (defrost)
Solenoid valve (by pass)
Solenoid valve (injection)
Water side heat exchanger heater
Water flow switch
Water flow switch heater
Crank case heater
●
ST1
●
SV5
●
SV6
●
SV8A/B
●
Water-SW
●
-
●
CCH
Wiring diagram
180kW
label
BP1/2
FAN
EXV
ST1
Wiring diagram
90kW
label
●
Fan A
●
Fan B
●
EXVA
●
EXVB
●
EXVC
●
ST1
●
SV4
●
SV5
●
SV6
●
SV8A/B
●
-
●
Water-SW
●
CCH
●
Open
●
Closed
●
Closed
●
Open
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.
Controlled according to ambient temperature and total
●
water outlet temperature.
Controlled according to ambient temperature and
●
discharge temperature.
Control functions and states
Compressor startup program selected according to ambient
●
temperature.
●
Fan run at maximum speed
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.
●
On
Control functions and states
According to ambient temperature, compressor frequency and air
side heat exchanger refrigerant total outlet temperature.
Step 480
Step from 0 to 480. Controlled according to suction temperature
superheat.
Step from 0 to 480. Controlled according to temperature difference
between economizer plate heat exchanger inlet and outlet.
Closed
Closed for 200s, open for 600s, then closed.
Closed
Open for 600s then closed.
Open
According to water side heat exchanger anti-freezing temperature.
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.
Controlled according to
temperature and water outlet temperature.
Controlled according to ambient temperature and discharge
temperature.
1 .
ambient temperature, water inlet
29