IBC SL 20-160 G3 Installation And Operating Instructions Manual page 19

CAUTION
Vent termination clearances in
this section are code minimum,
or IBC recommended minimum
requirements, and may be
inadequate for your installation.
Building envelope details must
be examined carefully, and
ingress of moisture into building
structures is to be avoided.
Serious structural damage may
occur if adequate precautions
and clearances are not allowed
for.
These precautions are to be
observed for neighboring
structures as well as for the
structure the boiler(s) are
installed in.
WARNING
It is extremely important to
maintain at least the minimum
separation of exhaust vent
termination from boiler intake
air as illustrated in figures 6,
7 and 13. Failure to do so can
result in a dangerous situation
where exhaust gasses are re-
ingested with combustion air.
Damage to the boiler can result
from a failure to maintain these
separations. Third party vent
termination kits and concentric
wall penetration kits that do
not maintain these minimum
separations shall NOT be used.
Improper installation will void the
warranty. Do not use proprietary
Innoflue or PolyPro sidewall
terminals without specific written
approval from IBC.
INSTALLATION
SL 10-85 G3, SL 14-115 G3, SL 20-160 G3, SL 30-199 G3 MODULATING GAS BOILERS SL 10-85 G3, SL 14-115 G3, SL 20-160 G3, SL 30-199 G3 MODULATING GAS BOILERS
b) Sidewall vent termination for indoor combustion air applications shall be as
follows:
• The vent shall be terminated with a tee fitting as illustrated (see Figure 10).
• Bird screen of 1/4" stainless steel or plastic mesh (IPEX System 636 drain grate)
should be installed in both open ends of the tee.
Figure 13: Sidewall vent termination - piping configuration
c) Sidewall Direct Vent with separate vent and air pipes shall be terminated as
follows:
• Both the inlet and exhaust terminations shall be located on the same plane (side) of
the building.
• The exhaust vent termination is to be placed so as to reach 12" minimum above the
down-turned intake - to avoid intake re-ingestion of exhaust gases.
• The elevation of both terminations can be raised in "periscope style" after passing
through the wall, then configured as in Figure 13, to gain the required clearance.
• Use a 45° elbow on the exhaust termination to launch the plume up and off the
sidewall (to protect the wall).
• Bird screen of 1/4" stainless steel or plastic mesh eg. (IPEX System 636 drain grate for
CPVC systems) is useful to guard against foreign objects.
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