1-11
INSTALLATION
SL 80-399 MODULATING GAS BOILER
SL 26-260 G3, SL 40-399 G3 MODULATING GAS BOILERS
Figure 10: Vent terminal clearances
Figure 11: Vent terminal clearances
b) Sidewall vent termination for indoor combustion air applications shall be as follows:
• The vent shall be terminated with a tee tting as illustrated - See Figure 9.
• 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 9: Sidewall vent termination -
indoor combustion air applications
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.
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