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Wiring guidance Honeywell ST9400C and DT90E to Dual Channel Hive

Discussion in 'Plumbing and Central Heating' started by milgo123, 22 Jun 2021.

  1. milgo123

    milgo123

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    Looking at the photos I've provided would you agree that it will be pretty straight forward?

    Isolate power, remove front cover and back plate from the ST9400C, transfer the wires from the back plate to the corresponding terminals on the Hive back plate
    N..L..3..4

    Remove thermostat and backplate from the wall (there are only 2 wires connected to the thermostat) join the 2 thermostat wires together with a suitable connector and tuck away in the recess then mount the Hive thermostat over the top.

    Thanks in advance for letting me know if I've missed anything or if any photos are required.

    Honeywell ST9400C Backplate Wiring.jpg Honeywell ST9400C Wiring Rear.jpg Glow-Worm ENERGY 15r Boiler.jpg
     
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  3. ianmcd

    ianmcd

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    yes that is fine , you dont have to do any wiring or change the backplate, the hive will slot straight on there, good practice to change them as the slots can get a little bit worn, but it is industry standard so interchangeable
     
  4. milgo123

    milgo123

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    Thanks Ian, working fine. Took less than 20 minutes
     
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