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9 - INSTALLATION - Split venting system
Figure 25 - Installation examples of the Split system (see section 9.2 for the reference of
the numbers)
9.4 - Split system:
installation
examples
Some installation examples can be
seen in fi gure 25:
1. the fi rst example shows the
vent system directly penetrating
the roof with the collection of
condensation inside the boiler itself.
The combustion air system must
be pitched outward 1/4 in/ft (21
mm/m) to prevent rainwater from
entering the boiler.
WARNING!!! Roof penetrations
must be made according to the
vent manufacturer's instructions
and prevailing codes. Failure to
comply with this warning can result
in a fi re causing severe personal
injury or death!
33
2. the second example shows the vent
system run through a vertical wall.
Condensation is collected inside
the boiler itself. The horizontal
section of the vent system must be
pitched 1/4 in/ft (21 mm/m) towards
the boiler. The intake combustion
air system must be pitched outward
1/4 in/ft (21 mm/m) to prevent
rainwater from entering the boiler.
WARNING!!! Under no conditions,
shall this boiler vent gases directly
into a masonry chimney, nor can an
active chimney be used as a chase.
Failure to comply with this warning
can result in chimney or vent
system failure causing excessive
levels of carbon monoxide which
can cause severe personal injury
or death!
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