16
V9.20
Power Supply
The Evaporator and Condensing units are separately powered with 8’ power cords and
grounded plugs. No interconnecting wiring is needed between the Evaporator and
Condensing unit.
Evaporator Power:
Plug in the Nema 5-15P plug to a shared or dedicated 15 amp receptacle
Condensing Unit Power:
Plug in the Nema 5-15P plug to a
dedicated
non-GFI 15 amp receptacle.
The Evaporator turns on and off based on the digital display controls, 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.
