INSTALLATION AND OPERATION INSTRUCTIONS
1-12
SL 80-399 MODULATING GAS BOILER
SL 26-260 G3, SL 40-399 G3 MODULATING GAS BOILERS
•
Figure 12: Sidewall vent termination
c) Sidewall Direct Vent with separate vent and air pipes shall be terminated as follows:
• Both the intake air and exhaust vent 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 exhaust re-ingestion.
• The elevation of both terminations can be raised in “periscope style” after passing
through the wall, then congured as in Figure 12 to gain the required clearance.
• Use a 45° elbow on the exhaust termination to launch the plume up and off the sidewall
(for protection of wall).
• Bird screen of 1/4" stainless steel or plastic mesh (IPEX System 636 drain grate) is
useful to guard against foreign objects.
Figure 13: Sidewall vent termination options - multiple vent piping congurations
WARNING
It is extremely important to
maintain at least the minimum
separation of exhaust vent
termination from boiler intake
air as illustrated in gures 12
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
PPs terminals available without
specic approval from IBC.
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