Aquacal GBB, Installation Manual

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1.6.c Connecting Gas Backup Heater to Heat Pump
To support a direct connection to a gas backup heater, AquaCal
®
heat pumps are equipped with optional
terminal blocks on the microprocessor. The microprocessor is located on the low-voltage side of the electrical
enclosure.
PLEASE NOTE -
If the heat pump is connected and using an external controller with a SMART bus
connection, the gas backup option is not available. The gas backup should be connected
directly to the external controller.
DANGER
Failure to heed the following will result in injury or death.
l
Deactivate power while routing wiring to control board.
l
Follow all National Electric Codes (NEC) and/or State and Local guidelines.
WARNING
Failure to heed the following may result in injury or death.
l
This section is only for qualified installers who are familiar with the swimming pool and spa safety standards.
l
The installer must be familiar with service industry techniques.
NOTICE
Failure to heed the following may result in damage to equipment.
l
The wire size connecting the gas heater to the heat pump must be 22-gauge (minimum), 2-conductor, low-voltage
wire.
l
Use direct connection ( dry contact) provided on the microprocessor for the gas heater.
l
Failure to follow the manufacturer's installation requirements for a fireman (cool down) switch may result in
damage to the gas heater.
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