CellarPro 4000SWC SPLIT SYSTEM WATER COOLED, 7649 - Manual (Page 15)

15 V10.14
System Wiring – Option A: Dual Power / Valve Control
Under this configuration the Evaporator and Condensing units are separately
powered, and the Condensing unit turns on and off based on suction pressure, as
follows:

The Evaporator includes a factory installed liquid line solenoid valve (LLSV),
which is controlled by the Evaporator temperature controller. The Condensing
unit is controlled by a low pressure switch which reacts to the suction pressure
and senses whether the LLSV is open or closed.

When the Evaporator temperature set-point is reached and the Evaporator
turns off, the LLSV closes, causing the system to pump down until the low
pressure switch shuts off the Condensing unit.

When the Evaporator turns on, the LLSV opens, causing the suction
pressure to rise and activate the Condensing unit.
Field power wiring is connected to both the Evaporator and Condensing units, no
interconnecting wiring is needed between the Evaporator and Condensing unit.
Evaporator Field Power Wiring:
Connect line lead to Evaporator terminal "L"
Connect neutral lead to Evaporator terminal "N"
Connect power ground to grounding lug on Evaporator
Condensing Unit Field Power Wiring:
Connect line lead to Condensing unit terminal "L1"
Connect neutral lead to Condensing unit terminal "L2"
Connect power ground to grounding lug on Condensing unit.