Discuss Stopping dead birds in fireplace in the Gas Engineers Forum area at PlumbersForums.net
Is this just advisable or compulsory?fit the correct gas cowl. on roof
All this is about terminal design for flues less than 170mm.5.1.5 Terminal design
When the diameter of a flue is 170 mm or less, a terminal conforming to BS 715, BS 1289 or BS 7435-1 and -2 shall be fitted.
Where a proprietary terminal is not used, the total free area of outlet openings on the termination shall be at least twice the cross-sectional area of the flue. Outlet openings shall be such that they will admit a 6 mm diameter ball but not a 16 mm diameter ball. The openings shall either be uniformly distributed around the termination or arranged at two opposite faces.
The free cross-section area of the terminal shall be appropriate for the appliance installed to the chimney.
That is from an old copy of BS 5440:1 (2000). Feel free to read on here!
As far as I know the 170mm is the same but check it yourself. It was the same in 2017 as I recall.
I read and understand the word 'shall' to mean 'you must and you will'!
As @cjg said, I would install one as it will prevent the birds falling in. I have installed them on commercial flues a lot bigger than 170mm for the same reason. When the boilers/fires are off it is a nice place to perch and warm your bum if you're a bird. Once that blast of CO2 and steam hits you it's good night Vienna!
As far as I can tell from experience they are still alive but unconscious when they fall in. Fitting one would be a bird friendly thing to do.
There's no such thing as DFE ticket, just a ticket for fires. If he's working on gas fires and doesn't have a ticket for that, he could get in trouble with gas safe. They view it just like working on a gas appliance without being gas safe registered...It may be he just doesn't have the ticket for DFE fires
Thanks. I stand corrected (actually, there's no logical reason you'd have a separate ticket for DFE fires, so not sure what I was thinking, really). So what I meant then was 'for fires'. Could an RGI carrying out a 'Landlord's Certificate' get around not having a fires ticket in a house where one is installed by just capping the gas supply/isolator and then ignoring it on the certificate on the grounds that it wasn't connected? Cause I think that's what he did. Not sure he even gave it an ID - think it was just cap and yellow tape and then ignore it on the paperwork!There's no such thing as DFE ticket, just a ticket for fires. If he's working on gas fires and doesn't have a ticket for that, he could get in trouble with gas safe. They view it just like working on a gas appliance without being gas safe registered...
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