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Is the chimney liner that was on my old gas boiler ok to connect a wood burning stove to or do I need to get a new flue. It is a steel concetina type flue liner.
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I have a Potterton Combi 100 boiler which heats my hot water and central heating. I have a gas fire in a proper fireplace (ie with chimney) which i dont like. I was wondering if i was to convert it to a wood burning fire with a back boiler to heat my central heating would i need any modifications to the existing combi boiler / piping system? Thanks...
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I would personally invest in proper flues
I have in a pinch used other types of flues but they are not something really to put in if you are settling it in for the winter. The flues for a wood stove is made out of different type metal and is coated according to regulations
I would certainly invest in the heavier flue with as little bends as possible for this is where the soot and other stuff like creosote settles. Make sure you use the triple-wall at the base of the ceiling and on through the roof it is safer that way so that you have less chances of a fire where you do not want one.
In some states and counties in those states you may have to have an inspection and to follow their regulations. Check in with your building department to see if you maybe able to use old materials..
You cannot use the flue from your gas boiler because the wood burner is a greater heat than the gas boiler. The flue for a gas boiler actually is not all that hot. Your woodburner should work quite well without any flue. To remove the old flue, which is advisable. you will have to pull it from the chimney by getting on the roof to withdraw it. A woodburner will cause a lot of wood ash in the chimney and may want frequent cleaning.
New chimney pipe for wood burning stoves are inexpensive and required by most building codes. Installation instructions are straight forward, and within the ability of most home do-it-yourselfers, so for the saftey factor ,you should always buy new pipe designed for the wood burning appliance you’ve aquired…Good Luck with your project!
Have a separate flue for the wood burning stove. The wood will burn hotter than your boiler will and you can inadvertently cause a negative pressure in the system. This would cause either the exhaust from the wood burner back into the home, or worse yet, push the Carbon Monoxide from the boiler back into the home.
Go with 2 separate flues on this project!
Good Luck!