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Changing from Salus RT500RF to Hive single channel

Discussion in 'Plumbing and Central Heating' started by Mark Duffy, 22 Nov 2019.

  1. Mark Duffy

    Mark Duffy

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    Just need to confirm that this will work before I buy...

    I have one cable coming out of my Baxi Platinum Combi 28 HE boiler into a Salus RT500RF receiver. I want to install Hive so is it just a case of L to L, N to N, Earth to Earth and COM to No1 on the Hive? I would imagine that I would need to leave the boiler in a permanently ON state on the manual timer?
    upload_2019-11-22_8-39-32.png
    upload_2019-11-22_8-39-53.png
    upload_2019-11-22_8-40-12.png


    Any help would be great and also save me a few bob
     
  2. ericmark

    ericmark

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    Reading the installation instructions yes it seems Hive will be about the best option for that boiler as no option to use ebus.

    I like the theory of Hive, would love to know if it works in practice, but theory is the wall thermostat is sent a "heat on demand" signal from the Hive TRV heads if the target is below current so while any room with a Hive head wants heat the boiler continues to run, so the boiler can modulate using the return water temperature without the wall thermostat interfering with the process.

    The Hive heads are a bit on the expensive side, so not sure if cheaper or more expensive than the others, and either you need to use PC or phone, or bend down and set on the TRV head, personally I would prefer EvoHome which has a wall thermostat display that allows you to easy adjust room temperatures without bending down or getting your phone out. Also as a complete package of 6 TRV heads and wall thermostat EvoHome is cheaper, only advantage of Hive is you can do it bit at a time.
     
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  4. ianmcd

    ianmcd

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    No you have got it wrong, what you are calling the earth is because you are going by wiring colour , never do that on heating wiring , it means absolutely nothing
    L to L
    N to N
    Grey wire in Com to 1 on hive
    what you call earth to 3 on hive
    you dont have or need an earth
     
  5. fezster

    fezster

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    I don't think the OP intends to use the TRV's, just the wall stat.

    OP - your understanding is not correct at all. I'd seriously advise getting a professional in. However, use the following information as you will (I'm not familiar with either the boiler or the stat, so am relying on the manuals I've googled):

    Boiler:
    https://www.baxi.co.uk/our-boilers/...hash=9DFCE6C1D45832C8E7919E71C262846D1F622214

    upload_2019-11-22_9-15-40.png


    Allows 230V connection.

    Stat:
    https://salus-controls.com/files/RT500RF-Manual-006.pdf

    upload_2019-11-22_9-16-9.png


    So hive to stat connections are as follows:

    Hive -> RT500RF
    3 -> NO
    1 -> COM
    L -> L
    N -> N
     
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  7. Mark Duffy

    Mark Duffy

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    Thanks guys, I did think the earth was not an earth as all the other pics I've googled don't match up to mine. I will trace the cabling back to the boiler and confirm before using the connections stated above
     
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