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10 - INSTALLATION - Coaxial venting system
Figure 28 - Installation examples for
the coaxial pipe
(see section 10.2 for
the reference of the numbers)
10.4 - Coaxial
system: installation
examples
When a coaxial vent and combustion
air system is installed, fi gure 28,
whether vertical or horizontal, it
must be sloped 1/4 in/ft, (21 mm/m)
towards the boiler.
distances given in fi gure 29,
between the vent terminal and the
wall and also between the vent
terminal and the ground level
(snow line).
Maintain 3ft distance also between
the vent terminals of two or
multiple boilers (see fi gure 29).
Figure 29 - Clearances for the coaxial
vent terminals of two boilers, in a vertical
wall or in a roof
37
CAUTION!!! Maintain the
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