Installing an external twin wall insulated flue system
This will really depend on the situation that the stove is been installed into. We can certainly help you design the right flue system that is right for your situation. We are happy to offer a free design service to help design the right flue system. All you need to do is email or fax a drawing of your room and our experts will design you a flue system and get back to you with a breakdown of all the relevant parts and prices – this is a no obligation service we offer.
A basic install would require the following: (this is just to give you an idea of what is required and may not be the same as the system you require to fit your stove)
1 – Stove
2 – Vitreous Enamel Flue Pipe (*see notes)
3 – 45 degree bend
4 – Single skin to twin wall insulated flue adaptor.
5 – Twin wall insulated flue (500mm to go through the wall)
6 – 45 degree T shape bend with soot door
7 – Wall Bracket (These are required every 2m to help support the flue system)
8 – 2 x 45 degree bend (these are for taking the pipe around the gutter and may not be necessary)
9 – Length of twin wall insulated flue pipe. (See below to work out required length)
10 – Rain cap (if the overall length of the flue system is less than 4m then we advise that you use a aspirating cowl to guarantee a draw)
Notes: * You must go up vertically 600mm before you can go through the wall.
Two important guides that you must follow when working out the height to take the flue are:
a) If the flue is coming out near to the ridge or a gabble end then you need to make sure that the pipe clears the ridge by at least 600mm.
b) if the flue is coming out through the roof in an area away from the ridge or lower down the roof then the flue must be at least 2.3m horizontally away from the nearest point on roof line.
This guide is only designed to give you a guide to installing a stove and flue system. It is not recommend that you attempt this on your own and always consult a professional HETAS installer.
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