Location of thermostat in utility room

Discussion in 'Electricians' Talk' started by RenovateMe, Nov 25, 2021 at 11:17 AM.

  1. RenovateMe

    RenovateMe New Member

    We are installing a heating mat under tiles in a new utility room which will have a sink and washing machine etc. It will be connected by an electrician, but for tile planning purposes (subfloor going in today) can you advise if the thermostat and wiring should be inside or outside the room? Thanks.
     
  2. Teki

    Teki Screwfix Select

    Generally, the thermostat sensing element should be embedded into the floor. You can have the thermostat on either wall depending on the length of cable from the sensing element.
     
  3. RenovateMe

    RenovateMe New Member

    Thank you..understand that the element should be embedded in the floor. However in our bathroom, the wiring from the element and control is located on the outside. I am checking if this is a zone requirement noting wet areas in utility room. In short, do I provide for the wiring to run under the floor to an internal utility wall or under the floorboards to the outside wall in passage? Thanks…
     
  4. Teki

    Teki Screwfix Select

    Does the utility room have a shower or hose in it? How far is the sink from the proposed install location of the thermostat?

    There are no specific zones for a utility room.

    You could just place it on the wall outside to be on the safe side.
     
  5. RenovateMe

    RenovateMe New Member

    No shower or hose…if placed above sink counter it will be 450mm from edge of sink …or opposite wall but not convenient. It would seem then that it can (within reason) go inside the room?
     
  6. Teki

    Teki Screwfix Select

    Yes, just curious why a utility room needs underfloor heating though? Is it to help dry clothes? Have you considered how you will prevent condensation?
     
  7. RenovateMe

    RenovateMe New Member

    To warm tiles only, not as the primary source of heating. Extractor fan is being fitted.
    Many thanks for the advice.
     
  8. The Happy Builder

    The Happy Builder Screwfix Select

  9. RenovateMe

    RenovateMe New Member

    One does not advise the Duchess on foot apparel and hope to see the next dawn in one piece. For the small price of a heating mat, and ably advised by the Screwfix community, Nirvana can be achieved…Until the next command at least…:)
     
  10. The Happy Builder

    The Happy Builder Screwfix Select

    Is there an air temperature sensor in the thermostat?
     
  11. MGW

    MGW Screwfix Select

    Two types of electric under floor heating, heating wires and chemical impregnated the latter does not need a probe in the floor.

    Also back ground heat and primary heating, the latter clearly needs to sense room temperature.

    When I came to fit could not find the chemical type with build in earth screen so had to use cheap nasty resistive wire type, but things have moved on.
     

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