Under Floor Heating thermostat - Inside or Outside the Bathroom?

[deanomc]

Can someone with an understanding of the Regs help me with. I have had two electricians price up a job to install underfloor heating matts in my bathroom. One told me it is ok to have the thermostat and fuse spur in the bathroom and the other said it needs to be outside the bathroom. Ideally I want it placed inside the bathroom. The bathroom is 2.7 long and 1.7 wide and the thermostatic switch is 1.1m away from the nearest point of water ( zone 2). I know I can play it safe by putting it outside but I don't want a panel in my hallway. Can anyone advise?

 

[Octopus]

If it was me I would put the fused spur in the hall and the controller in the bathroom.

 

[deanomc]

If it was me I would put the fused spur in the hall and the controller in the bathroom.

hmmmm, I wasn't given this option but this could work! So to confirm.......its ok to have a thermostat inside zone 2 (even if it is not 1p44) as long as the fuse spur is outside the bathroom.

 

[Octopus]

hmmmm, I wasn't given this option but this could work! So to confirm.......its ok to have a thermostat inside zone 2 (even if it is not 1p44) as long as the fuse spur is outside the bathroom.

How is it inside zone 2 given the dimension you gave? What is the "closest" water point?

 

[telectrix]

it's not the closest water point that matters. it's the distance from the bath/shower basin ( as long as equipment is suitable for the environment ).

 

[ian.settle1]

What would be the point of fitting a thermostat for the bathroom floor heating outside the room?

 

[Octopus]

What would be the point of fitting a thermostat for the bathroom floor heating outside the room?

if the mat has the sensor in it the controller could be anywhere within reason.

 

[telectrix]

you need to turn it on a couple of hours before your bath, so that would save going into the bathroom just to switch on.

 

[deanomc]

apologies. It is 1.1m from the basin but also close to the toilet. I was presuming the toilet would also class as a water point and therfore zone 2. It will be zone 3. Thanks

 

[ruston]

Some controllers have the option of probe or air measurement, with a maximum temp set.

 

[Octopus]

Contrary to common belief there is NO zone 2 involved with a wash basin.....

Does the circuit you are meddling with have RCD protection?

 

[deanomc]

yes, the thermostat I am using has both options but I have opted to have a probe running from the unit to under the floor. I will need to make sure ( if fitted outside) that it is long enough to reach.

 

[deanomc]

Hi Ian.settle1 - There is a probe that runs from the thermostat to under the floor. This means in theory the thermostat can be placed outside the bathroom.

 

[ruston]

In my opinion that is the best way to do it.
You can extend the probe cable.

 

[deanomc]

Hi Murdoch. It will be installed on a new designated RCD circuit.