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Topic Title: Wetroom, bit of clarification needed please
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Created On: 11 June 2013 08:35 PM
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 11 June 2013 08:35 PM
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Smith249

Posts: 359
Joined: 09 September 2004

Good evening.

Wet room, that is a tiled room without a tray, but with a fixed shower head and drain gully in the floor

Ceiling is 2m, well just under when tiles are on.

As I understand it from the 17th BS7671, there is no zone 2 now for wetrooms, there is a 1.20m arc from the fixed water outlet. Does this mean past 1.20m it is outside the zones? if so would you be happy fitting a IPX4 fan heater just past 1.20m, it would be right up high so wouldn't be readily available to touch. 701.512.2 does say IPX4 in zones 1, however the Dimplex IPX4 fan heater does not look sealed enough for zone 1 so have I missed something here?

Also, extraction fan, this will be going much nearer to the fixed water outlet than 1.20m. and due to the ceiling height not putting me outside the zones then it will either have to be a SELV unit or a duct fan, correct? Problem I have is the duct run is 5 meters. It is on the ground floor so locating a high flow duct fan would be difficult. Are there SELV centrifugal fans available that are SELV to cope with the longer duct runs?

All circuits will be 30mA protected.

Any advice would be much appreciated, never installed a wetroom so need a bit of clarification.

Kind Regards,
 11 June 2013 08:57 PM
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peteTLM

Posts: 3119
Joined: 31 March 2005

Use an inline fan outside the room, selv not required then.

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Lack of planning on your part doesn't make it an emergency on mine....

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 11 June 2013 09:10 PM
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Smith249

Posts: 359
Joined: 09 September 2004

Thanks Pete, but where do you put an inline fan where you can service it??

I've just found these that should do it http://www.dealec.co.uk/acatal...axia/ventsoloselv.pdf

Still need clarification on the fan heater though.
 12 June 2013 09:53 AM
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AJJewsbury

Posts: 11270
Joined: 13 August 2003

Also, extraction fan, this will be going much nearer to the fixed water outlet than 1.20m. and due to the ceiling height not putting me outside the zones then it will either have to be a SELV unit or a duct fan, correct?

I thought that 230V fans ("ventilation equipment") were permitted in zone 1, provided they're suitable according to the manufacturer's instructions. (701.55 (viii)).
- Andy.
 12 June 2013 11:33 PM
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Smith249

Posts: 359
Joined: 09 September 2004

Could one of these be used as it is IPX5?

http://www.heat-outdoors.co.uk...ipx5-1-5kw-716122.html
 14 June 2013 02:51 PM
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AJJewsbury

Posts: 11270
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Could one of these be used as it is IPX5?

In zone 1? - I don't think so - space heating equipment doesn't seem to be on the list (reg 701.55).

Outside zones - you'd probably have to take the manufacturer's advise, as it seems to be intended for outdoor use (where it might not, for instance, be subject to the heat & humidity it would find in a bathroom) - i.e. about it being generally suitable for the conditions.
- Andy.
 14 June 2013 06:11 PM
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OldSparky

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Joined: 28 June 2011

cant downflo heaters go in zone 2?
 17 June 2013 01:29 PM
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AJJewsbury

Posts: 11270
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cant downflo heaters go in zone 2?

They can, but the OP has a wetroom - so there isn't a zone 2 for it to go in.
- Andy.
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