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Discussion in 'Plumbing and Central Heating' started by Rod2808, 10 Nov 2019.

  1. Rod2808

    Rod2808

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    Hi,
    I was hoping for some advice about replacing a thermostat. Current model is a Hortsmann Channel Plus H17XL wired as shown in the picture below.
    IMG_20191110_085247.jpg
    Left to right wires are earth, N, L, then numbered 1-6, black wire is in number 4.
    Wiring diagram -
    Screenshot_20191110-231412~2.png

    I was trying to understand what I would need to do to change to a smart thermostat, probably from hive. The give wiring diagram is below. Any help much appreciated.
    dkyJ2U6.png
     
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  3. Rod2808

    Rod2808

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    The boiler is an Ideal ISAR HE30.
     
  4. ericmark

    ericmark

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    Hortsmann Channel Plus H17XL
    4 = N/O
    5 = Com
    6 = N/C
    According to these instructions.
    So 4 = 3 on Hive,
    and 5 = 1 on Hive.
    As far as I can tell Hortsmann Channel Plus H17XL is a programmer not a thermostat, so there may be a thermostat else where.
     
  5. Rod2808

    Rod2808

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    Thank you. Yes it's a programmer, no thermostat current.
     
  6. CBW

    CBW

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    Isn’t the Hive a programmable room thermostat? Also I can’t see a wire in number 5 on diagram, so would there need to be a link from L to com?
     
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  8. stem

    stem

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    Blue wire in N = Hive (N)

    Both brown wires in L = Hive (L)

    Black wire in 4 = Hive (3) Heating on [this wire is actually being used as a live so it should have a brown sleeve over it to identify it as such]

    Add a link between L and (1) Com [you can use the red wire removed from between the Horstmann L & 5]

    Put Green / Yellow wires in the Hives' Earth Tether
     
    Last edited: 11 Nov 2019
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  9. CBW

    CBW

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    @stem, I think I need my eyes testing, couldn’t see that red wire initially :eek::(
     
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  10. stem

    stem

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    To be honest, originally I didn't see it either and I was about to tell the OP, there was no way that timeswitch would be working as it is wired now......which prompted me to have a second look & then I spotted it.
     
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  11. Rod2808

    Rod2808

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    Ha thanks very much. I hadn't seen the red wire either.
     
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  12. ianmcd

    ianmcd

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    Add me to the blind group well spotted @stem , I was about to say the could not work
     
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  13. DIYnot Local

    DIYnot Local

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