Isn't reversing the flow ( or reducing the upward flow ) in the chimney the problem.
Blocked chimney? Gas fire not drawing
- Thread starter amfisted
- Start date
Isn't reversing the flow ( or reducing the upward flow ) in the chimney the problem.
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It might be. There are a number of possible causes.
We cannot possibly determine that without being on site. That advice could lead the OP (or anyone reading this) to think it's ok to use the fire as long as the extractor fan is switched off. We don't know that!
The fire should remain switched off until the installation has been checked by a registered engineer and declared safe.
Thanks for the further replies.
Currently waiting for quotes to remove the gas fire and install a woodburning stove, and the fire will remain unused and unchecked until that process is complete and we decide what to do next.
Currently waiting for quotes to remove the gas fire and install a woodburning stove, and the fire will remain unused and unchecked until that process is complete and we decide what to do next.
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One further question in advance of the woodburning stove installation.
The stove has a nominal output of 4.8 kw, but the salesperson told us that it can actually belt out up to 7 kw if fully loaded and burning like beggary.
Do we need a fixed air vent in the room? I was told by one HETAS engineer that we didn't.
The stove has a nominal output of 4.8 kw, but the salesperson told us that it can actually belt out up to 7 kw if fully loaded and burning like beggary.
Do we need a fixed air vent in the room? I was told by one HETAS engineer that we didn't.
so all the other scenarios are only 1%
, you've got to watch what you advise regard dangerous situations when you have not been given the appropriate training regarding gas safety
so all the other scenarios are only 1%
Agreed my terminology was not the best. And 99% was the wrong figure.
and maybe I am wrong to think that common sense would be adequate for someone to realise that sucking air out of a house is going to reduce the air supply to a room sourced gas fire.
The air that is being removed by an extractor fan is often being replaced by an equal amount so it has no effect on a flues ability to clear the products of combustion. However, there are installations where an extractor fan will adversely affect the flue.
the fire is lit because it is a cold day, all windows and external doors are shut, only the flue is still open to the outside, so where does the equal amount [of air] enter the house, down the flue maybe ?
Adventitious air.
Spiders webs ARE a regular source of problems such as this. So are over powerful extractors. Wheñ a fireplace is fitted , serviced or repaired it us a requirement that any extractors, even in a different room, are turned on FULL, and adjoining doors left open, while a spillage test is conducted.
The requirement is for a vent for any SF appliance with a NOMINAL output of 5Kw.
I am not sure the salesman is correct. They are designed and rated at maximum output for the recommended fuel. In actual fact, the useful heat is lower than the nominal, as, unless it is hopper fed, it cannot run at max all the time.
Coroner's report. "The casualties were not dead but nominally deceased" Handy get out clause when nominal is included in the regulations.
the manufactures instructions will tell all regarding ventilation. have a look to check if you're unsure.
also in your first post you mentioned that you're in a modernish house, do you have a pre cast chimney? they can be bad for blocking easily, especially when fitted by a builder on a price
yes sort of right but other factors need to be considered especially when not seen in person.
edit still should not give gas advice when not qualified
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