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Honeywell DT4 installation for Ariston E-System One boiler

  • 27-09-2024 3:00pm
    #1
    Inkers92
    Registered Users, Registered Users 2 Posts: 84 ✭✭


    I have Ariston E-System One boiler and timer has stopped working. I bought the Honeywell DT4R Wireless Room Thermostat but am unsure on the installation because I was told the boiler has no voltage connectors available.

    The wiring part for the receiver doesn't SEEM that complex and maybe I could have a go at it myself.

    I have some doubts though. There are 4 different wiring diagrams, depending if connecting to on/off boiler, combi , heat pump or port zone valve (see image below). I think it is the combi boiler wiring that would apply?

    If this is correct it seems pretty straight forward to connect the N,L in the receiver to the existing N,L in the boiler and then to connect the A, B in the receiver to the correct "ports" or connectors in the ariston.

    If I do this I suppose the receiver will power from the boiler supply and the switch connectors will trigger on/off based on temperature.. not even sure if this has a timer function(I kind of rush bought it).

    The instructions are not really clear (to me at least). Also, if I have to attach this to wall I will have visible cables?

    Should this be possible to do myself. I'm usually fairly handy but don't like messing with electricity and/or gas involved?

    If I do decide to get someone is "gas safe" needed or a sparks can do it and how much roughly can I expect to pay?

    Thanks for any guidance.

    17274491837601359013450646348311.jpg



Comments

  • #2
    10-10-20
    Registered Users, Registered Users 2 Posts: 8,062 ✭✭✭10-10-20


    If you need to remove the cover off a boiler then you need a RGI. If you had an RGI they would use this method from the install guide:

    P26/27 deals with the wiring. Seems like the internal timer can be just disconnected and the external control added.

    https://library.ariston.co.uk/e-combi-one-installation-manual/65189057

    It's also saying that a relay would be needed as the boiler uses low voltage, as you mentioned.

    The Combi Boiler wiring method on the Honeywell looks like it should work for you, but you may want to check that you don't have a 2-port zone valve.



  • #3
    Inkers92
    Registered Users, Registered Users 2 Posts: 84 ✭✭Inkers92


    OK, thanks for that. So just to double check is it the L to L and N to N and then remove the link and connect the low voltage so a combination of the combi boiler diagram in the thermostat document and diagram B on page 26 of the manual you provided should do it.

    If a rgi was doing this I suppose they would use standard three way electric cable? But what would they do with the earth.

    I think an rgi is way to go but getting someone out for these jobs is a challenge



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