Biodom 33
Biodom 33
Biodom 33
Biodom 33
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| instructions for use, maintenance and installation |
version 1.0 July 2017
11
Flue pipes in poor condition and/or made of unsuitable materials (asbestos, zinced sheet metal etc.,
with rough or porous surfaces) are prohibited by law and compromise proper boiler operation.
Smoke can be extracted through a traditional flue pipe (see figure below) provided that the following
rules are met:
•
Check condition of flue pipe maintenance. For proper maintenance and/or restoration
contact chimney sweep service.
•
Extraction of smoke gases can be connected directly to flue pipe only if it has a maximum
dimension of 20 x 20 cm or diameter of 20 cm and is fitted with inspection hole.
•
If the flue pipe is of greater dimensions, a stainless pipe (with required diameter) with proper
insulation must be installed into it.
•
Make sure that the connection with the flue pipe is properly sealed.
•
Avoid contact with flammable material (such as wood ashes), and, in any case, insulate them
with fire-resistant material.
When using connections between the pellet boiler and flue pipe, it is mandatory to use joints with
cleaning doors (
figure 3
). Use of joints with cleaning doors enables regular cleaning without the need
to disassemble pipes. Exhaust fumes in flue connection are under slight pressure. Therefore, it is
compulsory to check that the cover for cleaning ash is completely hermetically closed and that it
remains in this state after each cleaning. Ensure proper reassembly and check condition of the seal.
Figure 3: Cleaning unit
Connection between pipes must be always made with male fitting turned upwards (
figure 4
).
It is advisable to avoid using horizontal connections of pipes to flue. If this is not possible, the pipes
must not be installed in a downwards angle, but at an upwards angle of at least 5 % (
figure 5
).
Horizontal installation of pipes must not exceed 2 m in length.
It is not advisable to connect the pipe from the pellet boiler directly to flue with horizontal pipe,
longer than 1 m.
