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Installing thermostat wiring confusion!

dumbdad
dumbdad
edited December 2021 in General Questions & Topics
the wires to my existing thermostat have a diagrams for the cables. 3 wires are : COM, Demand & N.

COM obviously gets wired to COM but what about Demand & N?

Is Demand NO?

Answers

  • davidlyall
    davidlyall ✭✭✭

    Yes, demand would go to NO or NC. You will need to know if your original thermostat was an NO (Normally Open) or NC (normally closed) type.

    N needs to be safely isolated as it doesn't connect to anything

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