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    Changing my thermostat from honeywell T6360b to Cm921

    thanks i will give it a go
  2. L

    Changing my thermostat from honeywell T6360b to Cm921

    Hi all I have a T6360b which has 3 wires and i would like to change it to a CM921 which has only two on the wiring dirgram how can i change this. help please
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