Installation Manual
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Low Voltage Wiring
Low Voltage Wiring Diagram

24VAC controlled heat pumps

Wiring

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Dip Switches

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  • CNT/BSC switch: CNT (Control) enables smart thermal battery functionality. BSC (Basic) enables DHW and limited heating with no smart thermal battery functionality. Basic can provide service continuity in case of controller issues until those issues are fixed.
  • FRN/HP switch: Use HP for Heat Pump Protocol wiring, and FRN for Furnace Protocol wiring.
  • O/B switch: Set this switch to choose the correction operation of the reversing valve of the DX heat pump outdoor unit.
  • STD/COLD switch: Set to STD unless you are in a climate with a heating design temperature below 20F.



Updated 24 Oct 2024
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