Bathroom extract fan

[Hib]

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[Bahco]

The pros will tell you to fuse it down to 3 amp with a FCU

 

[Taylortwocities]

Personally I would use a good quality in-line centrifugal fan like this:
http://www.tlc-direct.co.uk/Products/SLTDK160T.html

Takes away all of that nasty damp from the scary sparking bits!

 

[Hib]

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[Taylortwocities]

Yes, the fan can be run off a lighting circuit. If you run it off the socket circuit you would need to put a fuse in the feed to the fan so you would use an FCU with a 3A fuse in it.

The reason is that the socket circuit will probably have a 32amp fuse and use 2.5mm² cable. If you dont fuse it you would have to use 2.5mm² cable right up to the fan and it would be tooooooo thick!

Also, the maker's instructions will probably say it hs to be fused.

PS Is this for UK, or Ireland?

 

[Hib]

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[pbar]

It's for the north of ireland therefore it comes under uk regs (although there might be some small differences).

The bathroom ceiling is against the rafters (112mm deep) so i would have to run the duct down between those for about 2 metres to get to the loft and fit the in-line fan there and then run the duct through the roof - that wouldn't be a problem would it?
Even using 100mm ducting, it would have to make a pretty sharp turn where it joins the fan.

Cheers

If you're using that flexible ducting though, it is very forgiving, you can flatten it a little, bend it, twist it, make it go places. Might not be ideal as regards to air flow but hopefully won't make too much difference, and if your situation calls for that, it'll have it.

 

[davebwithane]

just to let you know, I used a http://www.tlc-direct.co.uk/Products/SLTDK160T.html in my very recently updated bathroom. I am having problems with it and I think it is because the duct is too long and it has sharp bends in it .. when I am finished in the shower all walls are soaking wet, so be careful on the duct length and sharp bends and make sure there is a gap big enough for air to circulate under your bathroom door

 

[pbar]

just to let you know, I used a http://www.tlc-direct.co.uk/Products/SLTDK160T.html in my very recently updated bathroom. I am having problems with it and I think it is because the duct is too long and it has sharp bends in it .. when I am finished in the shower all walls are soaking wet, so be careful on the duct length and sharp bends and make sure there is a gap big enough for air to circulate under your bathroom door

A lot of people (although I am not suggesting this here) do expect a hell of a lot from bathroom fans. There is a great deal of vapour and steam produced in a short time from baths and showers and the addition of a fan can lead to disappointment if expectations are high. It will always, always help, but it can only do so much.
Definitely keep the duct length as short as you can. As well as the advice above, make sure that the ends of the ducting are connected nice and tight to the vent at either end and the fan inbetween, with no gaps.

 

[Taylortwocities]

Per the above, the ventilation INTO the room is a major factor. If the door fits snugly then the fan is trying to create a vacuum & wont work very well.

 

[pbar]

Per the above, the ventilation INTO the room is a major factor. If the door fits snugly then the fan is trying to create a vacuum & wont work very well.

Yes. The air taken out needs replacing. There might be other vents in the room though or window trickle vents, etc.

 

[Hib]

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[Taylortwocities]

It would need to be SELV (ie 12volt) and moisture/water resistant to at least IPx4 (IPx5 if its likely to be sprayed by a shower).

 

[GaryMo]

There's nothing wrong with a 230v IPX4 fan protected by a 30mA RCD in Zone 1 as long as it's not going to be exposed to water jets.

 

[pbar]

It will be a lot noisier in there with a standard fan. The inline one's are far quieter as it's in the loft space, you'll hardly hear it. Something to consider if you like a nice relaxing bath.