Where to put a CH boiler?

[mikey]

I'm putting a central heating system in a small flat and am struggling to find the best place to site the boiler. I'm wondering if anyone can advise what the regs are regarding how long the flue pipe can be? I've been told I can't site a boiler in a bathroom, but as I'm going to put a suspended ceiling in the bathroom I'm wondering if building regs would allow the boiler to be sited outside the bathroom with a long flue pipe going into the ceiling space above the bathroom and then out through the outside wall in the bathroom ceiling space.

Mike

[Tim Downie]

I'd check on that one. Plenty of boilers have been installed in bathrooms.

Of course, regs might have changed.

Tim

[John]

AFAIK, boilers can go in bathrooms as long as the electrical regs are complied with.

John.

[mikey]

Thanks John, although the outside wall in the bathroom has a window in it and very little brickwork either side of it so maybe the bathroom isn't ideal. Do you know if I can get away with a long flue pipe in the ceiling space and the boiler in the hallway outside the bathroom?

Mike

[fred]

In article , John writes

I think you're right but I've always thought it looks a bit shit, hardly matching a 'luxury' description when it comes inflating the resale value.

You can certainly pass the flue over a suspended ceiling or even duct it enabling you to hide the boiler in a cupboard somewhere. I've seen this done (with a Vokera I think) with a 6m long concentric flue, very nice if it had gone through a wall but they took it through a fixed light (window) at the end of the bathroom; what a mess.

Flue lengths aren't described in regs but in boiler installation manuals, look through manufacturer data to see how long their flues can be. Then, of course, look at the cost of flue extensions, 3quid a metre for Kestons to

60quid a metre for some metal concentrics.

[Owain]

Depends on the boiler. There are some that can do metres and metres of flue using small diameter high-temerature PVC waste-pipe, which makes positioning very easy.

Wrong. *open flued* boilers have been banned in bathrooms since the

1980s as too many people appeared on That's Life post-mortem from CO poisoning, but room-sealed boilers are fine. (Provided you can meet the electrical zone requirements.)

Owain

[Ed Sirett]

There is no gas fitting problem installing any room sealed boiler (modern ones always are thus) in a bathroom. There may be issues with the electrical regs, e.g. bathroom zones, RCD requirements (unhelpful).

Usually they can go in a cupboard and so comply with the regs.

As for the specifics of where to put any particular boiler you need to read the manual for your potential choice, and be familiar with flue accessory range for that model. Reference to BS 5440-1 linked below could be helpful.

[TheScullster]

"mikey" wrote

I'm wondering if building regs would allow the

Just done similar with a boiler mounted on a kitchen wall and a convoluted flue through the loft space above - approx 4.5m total. It may be necessary to increase the flue diameter depending on flue length and boiler selected. As others have said, flue extension pieces, elbows etc are silly money for some boilers - for my Worcester Bosch they were :( - about 50GBP per metre run.

Phil