CellarCool Magnum H.E. SS18000 - Preparing the Condensing Unit

Page 40
TWIN MG 092223
PREPARING THE CONDENSING UNIT
Electrical Needs
The unit requires a dedicated 220V, 15-amp circuit.
The unit draws a large inrush current for about 1 second when the compressor starts. With a dedicated circuit and circuit breaker,
the condensing unit will have sucient power for eective operation. (The compressor is controlled by a low-pressure transducer
mounted on the condensing unit. This feature eliminates the need for wiring between the evaporator unit/fan coil unit and the
condensing unit.)
• Ensure the voltage supplied matches the rating specied on the unit spec label.
• Provide a non-GFI dedicated circuit and an appropriate outlet for the evaporator unit.
• Provide a dedicated circuit and circuit breaker for the condensing unit.
• Provide a weatherproof disconnect for the condensing unit if it is located outside.
Power surges and spikes can damage sensitive electrical equipment. CellarCool recommends plugging the unit into a surge pro-
tector or power conditioner in order to protect your system. As outlined in our terms and conditions, power surges and spikes are
not covered under warranty.
WE RECOMMEND THAT YOU DO NOT USE A GROUND FAULT INTERRUPTER
(GFI) WITH THIS PRODUCT.
In case the system should lose power, check the home/main circuit breaker. If the system does not respond properly, refer to the
Troubleshooting Guide on page 46.
In case the system should lose power, check the home/main circuit breaker. If the system does not respond properly, refer to
the Troubleshooting Guide.
Communication Cable Operation
CellarCool’s split systems operate like traditional air conditioners where there is wiring between the condensing unit and the
evaporator unit.
CellarCool Cassette Condensing Unit systems do not utilize a solenoid valve or low-pressure switch, which allows the system to
run like a residential HVAC system. A 24V communication cable must be ran between the condensing unit and the evaporator unit.
When the thermostat calls for cooling, a 24V signal is sent from the evaporator air handler unit to the contactor located on the out-
door cassette condensing unit via the 24V communication cable. Once the contactor is energized, power is then delivered to the
compressor and the system beings to operate.
When the cellar reaches the desired temperature and the thermostat is satised, the contactor is de-energized, and the compressor
shuts o.