Spaniel Posted October 27, 2011 Report Share Posted October 27, 2011 HI After some advise to be honest I have just had the Baxi back boiler removed this week and we have a combi unit now installed, got to say the house feels alot more warmer and we have all the radiators working, just ready for winter Any way obviously i have a hole where the back boiler was and i have the gas supply ready for the new fire. I was thinking about getting one of those cast iron surrounds with the gas fire basket style but i am unsure about the flue, I have no idea if the flue i already have in the chimmney which was for the back boiler is any good for a new fire or is it a case the flue must fit a particular fire....any advise from the gas installers on here Cheers Quote Link to comment Share on other sites More sharing options...
BerettaSV10 Posted October 27, 2011 Report Share Posted October 27, 2011 I am in the same boat, and been asking around. The answers I got would be to remove the origional liner as when a normal gas fire is fitted they have to ensure the fumes are extracted out of the room. If the origional liner in donkeys years old, the old liner could not be guaranteed not to be perforated due to corrosion or blocked in some way. This could involve fitting a plate in the bottom of the chimney to seal it, with hole in it for the fire flue with a adaptor that fits the between the fire and the plate, with a new liner running up the chimney. The other option was (if feasable) was to fit a balanced flue that goes from the back of the fire through a new hole cut into the back of the chimney wall. This can only be done if the chimney wall is the out side wall and there is sufficient space so that it does not block or incroach others property. Quote Link to comment Share on other sites More sharing options...
Robin128 Posted October 27, 2011 Report Share Posted October 27, 2011 Have a chat with a GasSafe engineer...there are plenty willing to help on dedicated fora... http://www.plumbingandheatingforum.co.uk/viewtopic.php?f=4&t=231 http://www.ultimatehandyman.co.uk/forum1/central-heating-boilers-f35.html HTH Quote Link to comment Share on other sites More sharing options...
-Mongrel- Posted October 27, 2011 Report Share Posted October 27, 2011 (edited) I am in the same boat, and been asking around. The answers I got would be to remove the origional liner as when a normal gas fire is fitted they have to ensure the fumes are extracted out of the room. If the origional liner in donkeys years old, the old liner could not be guaranteed not to be perforated due to corrosion or blocked in some way. This could involve fitting a plate in the bottom of the chimney to seal it, with hole in it for the fire flue with a adaptor that fits the between the fire and the plate, with a new liner running up the chimney. The other option was (if feasable) was to fit a balanced flue that goes from the back of the fire through a new hole cut into the back of the chimney wall. This can only be done if the chimney wall is the out side wall and there is sufficient space so that it does not block or incroach others property. Pretty much what he ^^^^^ said. You should remove the old flue liner, it's been there for 20+ years if it was a back boiler on it and may well be compromised by now. After that you need to get the chimney swept and smoke tested...hopefully it will pass. Just because it was lined for a boiler does not mean that the chimney isn't sound. It's a regulation that a liner had to be fitted with back boilers. If it fails then as stated above, you either re-line it or fit a flued gas fire. Bear in mind that if you have double glazed windows and UPVC type doors then the chimney can fail due to not getting enough air, it's a problem with modern homes, try just opening a window a couple of inches and test again. If it passes now then you may just need an air brick fitted through the external wall to allow enough air circulation. The test should be done initially with all doors and windows shut and final test should be under the same circumstances. Edited October 27, 2011 by -Mongrel- Quote Link to comment Share on other sites More sharing options...
Asa Bear Posted October 27, 2011 Report Share Posted October 27, 2011 Call a couple of gas safe engineers in for a quote. You can't do it yourself anyway so get an expert in and stay legal. Ps back boilers have a liner to reduce the flue size only and should have purpose made ventilation which you won't necessarily require for most gas fires. Quote Link to comment Share on other sites More sharing options...
Spaniel Posted October 27, 2011 Author Report Share Posted October 27, 2011 Thanks Guys appreciate the comments I could get the balance flue as it is on an outside wall and we have just had the new combi fitted upstairs in the airing cupboard, again same side of the house. Also thanks for the links i might make a few phone calls tomorrow Cheers guys Quote Link to comment Share on other sites More sharing options...
bruno22rf Posted October 27, 2011 Report Share Posted October 27, 2011 I have a nice fire front from a Baxi Bermuda-its a floor mounted genuine Baxi unit that simply bolts on the front where the old (normally ugly wooden) unit fitted.It works as a stand alone unit that throws heat out the front and connects where the old unit connected-also has a 240v connection to produce a fake glow.I,m near MK if anyone wants it-bin in my shed gathering dust for near 5 years-just come and get it-can do pics if you want. Quote Link to comment Share on other sites More sharing options...
CZ550Kevlar Posted October 27, 2011 Report Share Posted October 27, 2011 We had one of those horrible back boiler and fire arrangements, makes me shudder thinking how much heat went up the chimney. We had an engineer in who ripped out the back boiler and fire and cut off the gas and we got another chap in to fit a multifuel stove, i removed the liner myself to save money, you will find ontop of your chimney will be a metal cowl with flaunching holding it down, give this a whack with a lump hammer and bolster and it will come away then start pulling the liner out but be very aware that after a couple of meters gravity takes over and you will find the liner extracting itself so watch out. TOP TIP- tape up and seal the opening at the bottom and also crush the end of the liner and tape that up tight as they can accumulate dust and soot. Quote Link to comment Share on other sites More sharing options...
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