Boiler fumes possibly go into bedroom?

andre_xs

Dear All,
we recently got a new boiler installed (Viessman Vitodens 100). It's installed in the conservatory, and the flue runs 'away' from the house and then up through the conservatory roof (roughly 60cm high).

The tip of the flue is just below the lower level of the first floor bedroom window. I haven't measured, but it should be around 2m distance.

Now with the cold, the fumes are easy to see. We noticed that if it is slightly windy, the fumes may be pushed towards the bedroom window, so that when it's open, the fumes go into the bedroom.

Do you think this is a problem, for example regarding carbon monoxide?

Best wishes,

Andre

Ayr_Rage

CO is produced by incomplete combustion so should not be an issue with a brand new boiler.

What you are seeing is mainly water vapour and CO2 and if the flue is fitted according to the regulations you'll be fine.

Boiler flue gas is the exhaust gas produced when a boiler operates. The exhaust gas typically contains carbon dioxide, nitrogen oxide, water vapor and other pollutants that are released into the atmosphere.

grumbler

andre_xs said:

The tip of the flue is just below the lower level of the first floor bedroom window. I haven't measured, but it should be around 2m distance.

Makes no sense to me

ThisIsWeird

Could you provide an outside photo, Andre, just to help explain what you are saying?

andre_xs

To clarify: The 2m distance mostly come because the flue comes out of the conservatory roof, so it's maybe 1.5m- 2m distance from the wall of the house. The conservatory is naturally "single-storey", so the tip of the flue is roughly the same height as the bedroom windows on the first floor (it's roughly 20-30cm lower). And it's not directly in front of the window, it is somewhat offset. So total distance is ~2m.

grumbler

I think, 2m is fine even by modern strict regulations.

FreeBear

Get yourself a Carbon Monoxide (that is CO, not CO2) alarm for the bedroom - Better to be safe for a small cost of £15-25 that an alarm would cost from the likes of Screwfix.

Emmia

FreeBear said:

Get yourself a Carbon Monoxide (that is CO, not CO2) alarm for the bedroom - Better to be safe for a small cost of £15-25 that an alarm would cost from the likes of Screwfix.

This is what I'd do for peace of mind in this situation, we have one close to our boiler in the kitchen.

casper_gutman

I've seen probably half a dozen posts this week on various sites from people worried about boiler flues being too close to windows or boundaries. It's only because the weather has been cold and so you can see the water vapour, a bit like you can see the water vapour in your breath on a cold day.

2m away is plenty. I'm sure it's fine.