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Warmup Underfloor Heating Install, advice please (with pics)

Discussion in 'Electrics UK' started by RainbowWrighty, 3 Nov 2009.

  1. RainbowWrighty

    RainbowWrighty

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    Hi,

    I have an 8 sq. metre floor into the kitchen to install Warmup UFH in.

    I have two heater kits (DWS600 + DWS800). The XSTAT control unit will be placed in the pantry and there is already a RCD fuse point installed in there.

    I just would like clarification that I'm going about the install in the right way.

    Hopefully the pics and notes below will explain and I will raise my queries along the way in bold.

    This is the pantry where the wires to the UFH control unit will run into.
    Question: I will be putting a channel into the concrete floor for the heater wires. Do I need to put any additional protection around the cabling or can they just been taped into the channel and then tiled over?
    [​IMG]


    This is where I was planning on having the junction box for the two heater cables to meet. Cabling up the wall will be covered by trunking. No need to channel in.
    [​IMG]

    This is where the Warmup XSTAT unit will be placed.
    [​IMG]

    I will also be fitting the Warmup insulation boards.

    Does the electrical part need to completed by an electrician and can it be a DIY job? I'm happy if the letter of law dictates that a qualified sparky should do it, but if possible, I just wanted the satisfaction of achieving the job myself. :)

    Thanks for your help guys,

    Ade
     
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  3. Taylortwocities

    Taylortwocities

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    You can channel the cold tails into the floor and tile over.

    The location of everything looks OK.

    This is electrical work in a kitchen and so it needs to be notified to the local authority. If you do it yourself you'll need to pay the fee to the local authority before you start work. They may expect you to have the test equipment to test the installation (including the characteristics of the RCD) and knowledge to certify the lot.

    If you look in the WarmUp instructions they state trhe installation should be done by a competent electrician and done in accordance with BS7671.
    Putting electricity into a floor where they may also be water IMHO should be done with extreme care.

    I suggest you get a registered electrician to do it for you.
    Get one here: www.competentperson.co.uk
     
  4. RainbowWrighty

    RainbowWrighty

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    Thanks TTC, I'll get an electrician in.

    Thanks

    Ade
     
  5. Taylortwocities

    Taylortwocities

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    He'll probably be happy to do the techky bit while you do the grunt. ASk him/her if he/she s OK to do work like that.
     
  6. electronicsuk

    electronicsuk

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    Also, chuck that FCU away - if it's the type I'm thinking of, you'll more than likely find that if you need to change the fuse in a couple of years time, the plastic carrier will be tough to remove and the flimsy notch for prising it out with a screwdriver will bend as soon as you so much as look at it. Unsure of the brand in question as it's not one that I would ever consider fitting even if cost was an issue, but I was unlucky enough to have these in the kitchen of my house when I moved in.
     
  7. Taylortwocities

    Taylortwocities

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    Name of a dog: Marbo
     
  8. electronicsuk

    electronicsuk

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    That was my suspicion, but didn't want to say as I wasn't 100%. It figures, as I do recall using some Marbo surface boxes purchased from B&Q (don't ask) which were about as brittle as the average pane of glass.
     
  9. RF Lighting

    RF Lighting

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    You need to make sure the mat and probe are tested before you lay the tiles.

    If it happens to be faulty, once the tiles are down, you are buggered.
     
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  11. Taylortwocities

    Taylortwocities

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  12. Salmonfisher

    Salmonfisher

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    can the underfloor heating control box be fitted inside a bathroom with the spur on the outside?
     
  13. Taylortwocities

    Taylortwocities

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    The WarmUp installation instructions state
    "The thermostat should be fitted to the outside of an internal wall
    at the bathroom"

    So the answer is no, if you are to follow the manufaturer's instructions.

    PS. The XSTAT instructions say

    "This control unit and associated components should only be
    installed by a competent person (i, e qualified
    electrician). Electrical installation to be in
    accordance with latest IEE Wiring Regulations
    and appropriate Statutory Regulations."
     
  14. flameport

    flameport

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    Given that some of the thermostat modes include monitoring the air temperature, it would be pretty useless installed outside of the room.

    Is there some reason for hiding it in the pantry? Could it not go on that wall to the left of the door - no need to hack the floor up, and the stat would be in the room where the heater is.

    With regards to the bathroom question (not relevant to the original thread as that is for a kitchen), the Warmup instructions say:
    BS7671 does not prohibit installing a thermostat in a bathroom, so what are they on about?
     
  15. RainbowWrighty

    RainbowWrighty

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    I decided to locate the XSTAT in the pantry as once we've set a program for the UFH, we'll hardly ever need to adjust it. Also, the unit has the floor probe which will monitor the floor temperature. Unless I'm missing something. I'll check with WARMUP tech support to check on best position for the XSTAT.

    Ade
     
  16. Taylortwocities

    Taylortwocities

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    Flameport, I agree and the XSTAT does have an air temp feature, should you chose to use it.
    Probably the MI's haven't caught up with latest regs.

    Wrighty, let us know what WarmUp say - thanks!
     
  17. RainbowWrighty

    RainbowWrighty

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    I spoke with Warmup who said it would be fine to locate the XSTAT in the pantry. There is indeed an air temp sensor in the unit, but you can choose not to use it, and just use the floor probe.

    Thanks for replies.

    Wrighty
     
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