carbon monoxide alarm going off!

[Roosaaliiee]

On 07/03/2023 at 10:58, Muddy42 said:

 

Or Jackdaws?  They don't tend to like flues that are in use, but I've had them move in when I've been away for two weeks.  They can put sticks down the chimney to try and form a base for a nest. 

 

Or the sweep in October might have disturbed the chimney pot or liner, causing an issue?

 

Or there could be something wrong with the outflow from the stove to flue - broken vermiculite panel or baffle plate.

 

Personally I'd want to separate the stove from the flue, clean the flue and remove all the ash with a dustpan and brush and then a hoover.  Check the air intakes are working correctly not filled with ash and then smoke test flue and stove in turn with burning newspaper (open windows).

 

Is the base of the firepan designed for multifuel (a grate - metal bars with gaps between them) or wood (flat surface)?  If its the later don't use coal.  Coal needs air and for the ash to escape easily, otherwise it slumbers and could easily cause CO.

 

 

Thanks. it's multifuel with a grate. 
I haven't been away for long enough since October for birds to start nesting.

 

I'll just get it checked by a pro I think, the wood burner!

[Roosaaliiee]

On 06/03/2023 at 21:36, Steven P said:

Back to the original post, not CO related, probably, but how much fire do you usually have if it is tricky to keep going? Is it 1 or 2 logs, or a firebox full?

the firebox is very small, it is a small woodburner anyways AND there's a back boiler element in it too, so only takes a few logs at a time

[Muddy42]

3 minutes ago, Roosaaliiee said:

Thanks. it's multifuel with a grate. 
I haven't been away for long enough since October for birds to start nesting.

 

I'll just get it checked by a pro I think, the wood burner!

 

good idea

[openspaceman]

3 hours ago, Roosaaliiee said:

there's a back boiler element in it too,

Now this may be significant, most back boilers severely limit firebox temperatures and any flame coming in contact with a cold surface is quenched and combustion doesn't go to completion, resulting in sooty deposits.

On the small commercial units I used to snag there would be a thermostat that didn't send water until the temperature had reached 60C.

 

This is probably also the reason that no one has/had got a wood stove with a back boiler through the ecodesign designation.

 

You could cut a vermiculite board to put against the metal surface and reduce conduction of heat to it, it would spoil hot water production but give a cleaner burn.

Edited March 10, 2023 by openspaceman

[Stubby]

1 hour ago, openspaceman said:

Now this may be significant, most back boilers severely limit firebox temperatures and any flame coming in contact with a cold surface is quenched and combustion doesn't go to completion, resulting in sooty deposits.

On the small commercial units I used to snag there would be a thermostat that didn't send water until the temperature had reached 60C.

 

This is probably also the reason that no one has/had got a wood stove with a back boiler through the ecodesign designation.

 

You could cut a vermiculite boar to put against the metal surface and reduce conduction of heat to it, it would spoil hot water production but give a cleaner burn.

My thoughts as soon as I read " back boiler " .

[GarethM]

Do they do a gravity fed load valve ?.