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Wiring for Vaillant Turbomax 828E and Wireless Thermostat

Discussion in 'Plumbing and Central Heating' started by Paul Le Baigue, 11 Nov 2016.

  1. Paul Le Baigue

    Paul Le Baigue

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    Hi Guys

    Bought new Tower RFNP wireless thermostat to replace old hard-wired one but have three wires coming from boiler and the thermostat receiver talks about needing 4 wires. What do I do?

    This is what the thermostat instructions say...

    For conventional heating installations, connections will be required to terminals 1-4 only. Terminal 5 can be ignored.

    1: N Neutral
    2: L Live
    3: COM Switch input - common
    4: NO Switch output (On) Normally open
    5: NC Switch output (Off) Normally closed

    Cheers.
     
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  3. spraggo

    spraggo

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    The wiring refers to the connections in the transmitter not the thermostat which has no connections and is powered by a battery
     
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