View the thread, titled "heat source pumps wiring" which is posted in Electrician Talk Forum on Electricians Forums.

Crumbs Buzz, lots of options, depends on make and model. Biggest one i have done required

1. TP supply
2. SP Supply
3. Internet connection.
4. Outside temp connection.
5. Alarm output connection.
6. Remote Auto / standby
7. Extended temp sensor wires for Buffer tanks.
8. UFH Controls back to circulating pump

Simpler Ones:
1. SP Supply
2. Thermostat to activate remote UFH pump.
3. internet connection.
4. External temp sensor

Get hold of install manual :-0
 
To wire a heat pump, start by identifying the components: the outdoor unit (compressor), indoor unit (air handler), and thermostat. Always ensure the power is off before beginning.

Basic Wiring Steps:​

  • Thermostat Wiring:Common connections include:
    • R (Red): Power (24V)
    • Y (Yellow): Compressor
    • G (Green): Fan
    • O/B (Orange/Blue): Reversing valve (for heat/cool mode)
    • C (Common): Continuous 24V power
  • Outdoor Unit Wiring: This connects to the indoor unit and thermostat via low-voltage wires.
  • Control Board: Inside the air handler, match the thermostat wires to the control board terminals as per the wiring diagram.

Important Tips:​

  • Refer to the Manual: Always consult the installation manual or wiring diagram specific to your heat pump model. If missing, search online using the make and model.
  • Get Professional Help: If unsure, it’s best to consult an HVAC technician to avoid improper wiring.

AI generated. And possibly not applicable to the OPs situation.
 

Reply to the thread, titled "heat source pumps wiring" which is posted in Electrician Talk Forum on Electricians Forums.

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Title
heat source pumps wiring
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Electrician Talk Forum
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buzzlightyear,
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snowhead,
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