Receiver Heaters
All low ambient receiver packages come with electric band-type heaters to maintain a minimum internal refrigerant
temperature to allow cold ambient starting. The heater thermostat, normally located inside the electrical control
panel on the condenser, is factory set for 50°F. It may be adjusted in the field but not recommended unless needed
for specific design conditions. All receivers are insulated for to help maintain the internal refrigerant temperature
during cold ambient outdoor conditions. The heaters are wired single phase and powered by the condenser power
source.
Receiver Heater Electrical Wiring
1. Wire per the condenser wiring diagrams
2. The receiver heaters are powered by the condenser power source.
3. The circuit 1 receiver is wired to terminal block TB3-1 and TB3-2 inside the condenser electrical enclosure.
4. The circuit 2 receiver is wired to terminal block TB3-3 and TB3-4 inside the condenser electrical enclosure.
5. Two wires are required for the thermostat temperature sensor which is mounted on the bottom of each
receiver.
6. The thermostat temperature sensor(s) must be connected to the thermostat terminal “SEN” and “COM”.
7. Use only shielded cable for sensor wires.
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