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    Honeywell CMT927 wireless thermostat to a new Vaillant Ecotec plus 832

    I tried to wire this in but I still can't get it working. I connected the L and N on the 927 to the RT 230V on block X1. I connected the A and B from the 927 to the BUS connection on block X100. I removed the link on the RT 24V from the X100. It did not work and the boiler would not fire up...
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    Honeywell CMT927 wireless thermostat to a new Vaillant Ecotec plus 832

    Thanks to all.
  3. T

    Honeywell CMT927 wireless thermostat to a new Vaillant Ecotec plus 832

    Thanks for your replies. Can anyone make it any clearer for me please?
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    Honeywell CMT927 wireless thermostat to a new Vaillant Ecotec plus 832

    Thanks for your reply. Unfortunately I don't have 3 or 4 on my boiler I have: Any ideas?
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    Honeywell CMT927 wireless thermostat to a new Vaillant Ecotec plus 832

    Hi, I could really do with some help, I am trying to wire a honeywell CMT927 to a vaillant ecotec plus 832 and the manual is unclear. I need to know where the L and N and the A and B on the receiver connect to the boiler. Can someone help, any help is appreciated. Thanks Terry
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