35
9.3 - “Split 80/
80PP” system:
installation
examples
Three installation examples can be
seen in figure 29:
the first 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
fire causing severe personal injury
or death!
Figure 29 - Installation examples of the “Split 80/80 PP” system (see section 9.2 for the
reference of the numbers)
the second example shows the vent
system run through a dormant
chimney. 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.
the third example shows the vent
system run through a dormant
chimney but the vent is done by the
flexible polypropylene pipe.
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.
9 - INSTALLATION - Split 80/80PP venting system
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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