TBH I would never fit a gas fire to a chimney that had not been swept. If the old fire had been in for 19 years I would imagine that there could be a fair amount of crud in the chimney. As G4U has said, spiders webs can cause major problems to the flue flow. Precast flues are notorious for causing problems particularly with regard to the care used during construction, i.e. were all the snots (cement mortar used to join the sections together that get squeezed out into the flue) removed?
The fact that your old fire was OK is irrelevant as it is no longer being used and we don't know what make/model it was. Also, one assumes the new fire was suitable for use on precast flues? Some aren't.
I won't get drawn into a discussion as to the difference of opinion between BG and your independant as it will end in tears.
so it sounds as though it would be beneficial to have the flue surveyed and if any probelms have them rectified. We were going to cap it and have electric fire , wish we bloody had now
I've dropped a nail on the end of a bit of string down and used this to pull a larger rope through with a rag tied to the end. Had to do it due to the damp cobweb problem.
Had dismantle part of precast to drop lump hammer or couple of 1 inch union elbows tied on to washing line to knock fangs off.
Amazing what a cob web will stop even on a class 1 chimney
Winther Browne Suggested test again after running fire for 20 mins.
Our Gas Chap tested it running for 20 mins with a CM censor also.
He got the same result, spillage from the very edge. He then decided to open a window, same result.
The censor detected no CM
we contacted winther again and they said they Don't actually manf the fire they are just a brand and gave us the MF details but they say verbally that its just heat reflection and normal but unless the MF will state that in writing our gas fitter will not sign it off.
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