What size should be the opening for the coaxial pipe in the wall?
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of viewingHello. I have a wall mounted gas boiler with a coaxial chimney. The wall is log. What should be the size of the opening for the chimney, who knows? Thanks in advance.
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Good afternoon, Nyurgustan. The hole is made of a larger cross section than the coaxial pipe by 1.5 - 2 cm itself. Decorative overlays are included with the pipe, completely covering the pipe diameter + clearance.
For clarity, the result looks like in the attached photo. The hole between the wall and the chimney is sealed with non-combustible material, one option is basalt wool.
I would like to draw your attention if the boiler is a condensation boiler, the coaxial pipe is installed at an angle inside the house.