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Hive Dual channel Thermostat

Discussion in 'Plumbing and Central Heating' started by Stormie, 13 Apr 2019.

  1. Stormie

    Stormie

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    Have just purchased a dual channel Hive and would appreciate if someone could confirm my wiring proposal attached. The solid lines represent current wiring using Honeywell timer and stat, the dotted lines represent proposed wiring to Hive. (British gas arrived and then refused to install as we have an oil fired boiler and they are apparently not allowed to install even although technically they could) Have searched all threads but cannot find exact duplicate of our system.
     

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  2. ianmcd

    ianmcd

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    No when you fit the hive you remove the Honeywell programmer and room thermostat or they will over ride the hive, and your immersion heater can not be wired into this circuit in any way
     
  3. Stormie

    Stormie

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    Hello Ian,
    Many thanks for your reply. I am intending to remove both the Honeywell timer/controller and the Honeywell thermostat. The current wiring has been working perfectly for the last 4 years with our hot water on 24/7 and the heating as per our programming or instant changes afforded by the "remote" Honeywell thermostat. Whilst I understand your comment regarding the Immersion, it would be very useful to me to understand what I should do vis a vis the wiring to install the Hive. Can you help with that ?
    Patrick
     
  4. ianmcd

    ianmcd

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    You cant wire the immersion heater element to the hive, the hive has to be supplied by a 3 Amp protected circuit, the same circuit that supplies the boiler and valves etc, why would you want to control the immersion with the hive? it is only there for use as backup if your heating system fails
    Remove all wiring for the existing programmer and room thermostat, from thhive wire
    3 to brown wire on DHW zone valve
    4 to brown wire on CH zone valve
    and obviously a L&N to L&N on the hive
    Its as simple as that leave the rest of the wiring as it is, as already said the L&N supplying the hive must come from the same circuit already in
     
    Last edited: 13 Apr 2019
  5. Johnmdc

    Johnmdc

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    I think what the OP has marked up as immersion heater is actually the cylinder thermostat, which should be wired in series with the hot water valve as he has shown in his wiring diagram. Otherwise there would be no control of the temperature.
     
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  6. Stormie

    Stormie

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    Hello,

    Many thanks for your inputs - I assumed because the wires went into the side of the tank that they were into the immersion - but may well be temp control - sorry but the original install was done by a very professional heating engineer, who I am sure would not have done any "botch job", the quality of the wiring and layout is perfect, with everything aligned perfectly. Unfortunately I am no longer in contact with him, but any error in my wiring diagram is down to me. Any help is greatly appreciated. Any suggestions as to how to wire the Hive based on your expertise and obvious common sense corrections of my wiring diagram ?

    Regards and thanks

    Patrick
     
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  8. ianmcd

    ianmcd

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    yes if it is the Cylinder thermostat and not the immersion heater then your wiring is correct
     
  9. Stormie

    Stormie

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    Very many thanks to both of you, advice much appreciated. will have a go today.

    Patrick:):):):)
     
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  10. bernardgreen

    bernardgreen

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    Stormie

    Well done on that diagram.
     
  11. Stormie

    Stormie

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    Hi All,

    Have installed Hive this morning and all works perfectly first time. Many thanks again

    Regards
    Patrick
     
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  12. bernardgreen

    bernardgreen

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    Guess you have been a busy little bee........
     
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