boiler external vent

mutley74

I am looking to relocate an existing Potterton boiler from the bedroom to the garage.

The garage has a steep tiled rood, and the outer wall is brick leading to a small alleyway/road (which only serves about 4 houses).

I have a had a few quotes in, and some saying its okay to vent horizontally some say must be vertical though the roof (the latter quote is more expensive.
If the vent was horizontal it would be about 2m from grade, and open out over a short kerb - no risk of hitting anyone or anything, and no neighbours windows/doors for ~4m.

If vertical its add an extra cost of around £250. Welcome any advice

Slinky

Who owns the land on the other side of your wall? You can't just vent outwards over it if it isn't yours.

Furts

What does the installation manual say about flue requirements? Have you checked this out?

But also is there the risk of the boiler, the pipes, or condensate freezing in the garage?

Alex1983

You can!!!8217;t terminate it over your boundary, still see it done a lot but not meant to be done.

In your situation it should go vertical.

mutley74

thanks for the replies. had a few more quotes in and they all suggest its easier going vertical to avoid future disputes and conflicts with the regs.

land outside of the garage wall is a council non-maintained/unadopted road (dead end road).

A gas plumber said it can be done, but when i spoke to him again, he said if boiler is changed i might need to go vertical anycase!

bris

The distances are fine and the termination of the horizontal flue will only stick out about 10 inches so I don't see a problem. I would put a guard over it too if it's only 2 meters from the ground level.


Vertical would be better though even though I don't see a boundary issue.