1. Visiting from the US? Why not try DIYnot.US instead? Click here to continue to DIYnot.US.
    Dismiss Notice

What Heating Controls do I need for a 3 zone system (UFH plus Radiators)?

Discussion in 'Plumbing and Central Heating' started by subzero, 29 Dec 2018.

  1. subzero

    subzero

    Joined:
    21 Dec 2007
    Messages:
    104
    Thanks Received:
    2
    Country:
    United Kingdom
    As part of a renovation, our plumber installed UFH in the main ground floor areas, as we were having new floors laid. Rads were installed in the rest of the house. The UFH is in two separate zones (separate flow monitors for each). Therefore, a 3 zone system in total.

    The plumber left us with a Heatmiser wiring centre, but said they don't wire those up and we'd have to get an electrician to do that. Our electrician said he doesn't know how. So we're on our own with this. We'd like RF control over the various zones. However the wiring centre isn't suitable for RF controllers, apparently.

    Am I right in saying that we'd need 1 x RF controller for the UFH, together with the appropriate RF receiver wired to the boiler? And would that control both UFH zones?

    In addition, would we need another separate RF controller for the rads, presumably with another RF receiver unit wired to the boiler?

    Thanks for any advice.
     
  2. MeldrewsMate

    MeldrewsMate

    Joined:
    27 Jan 2010
    Messages:
    527
    Thanks Received:
    123
    Location:
    Buckinghamshire, Darn Sarf
    Country:
    United Kingdom
    That's a bit naughty, saddling you with a component that he has no intention of commissioning.

    Presumably you can hardwire the RF receivers from several RF thermostats into the Heatmiser UFH control? In this way you can have RF control of the three zones, and the boiler call can be from either a hardwired link or via an RF link (consider using an RF cylinderstat to get the Heatmiser output to an RF receiver at the boiler if hardwiring has not been installed).

    In any case you'll need the UFH to be piped independantly of any radiator loads, or you'll have rads warming up at silly-o'clock when the UFH kicks in.
     
    • Thanks Thanks x 1
  3. Madrab

    Madrab

    Joined:
    4 Oct 2012
    Messages:
    4,978
    Thanks Received:
    1,206
    Location:
    East Renfrewshire
    Country:
    United Kingdom
    It wont be difficult for someone who is experienced in advanced heating systems and the controls to sort it out for you but it definitely isn't a DIY job.

    As @MeldrewsMate says though, that's ridiculous. I wouldn't be making final payment to those guys until they sort it out or get someone who can. They shouldn't be installing/supplying and charging for something that they aren't capable of completing.

    If you have paid for it all and now have to pay again to have it completed then that's pure misrepresentation as far as I'm concerned, unless they told you up front that they couldn't do the final wire up.
     
    • Thanks Thanks x 1
  4. Dan Robinson

    Dan Robinson

    Joined:
    1 Jul 2007
    Messages:
    56,046
    Thanks Received:
    9,420
    Location:
    Hertfordshire & London
    Country:
    United Kingdom
    Last person to be involved with this is an electrician.

    The heatmiser system is fine if prepped correctly. Otherwise use Evohome.

    Get an installer that understands ufh and controls. Getting two people in is a recipe for disaster.
     
    • Thanks Thanks x 1
Loading...

Share This Page