IBC SL 28-160 Installation And Operating Instructions Manual page 14

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 neighbouring
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 4, 5 and
9. 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.
1-10
SL 28-160 MODULATING GAS BOILER
Figure 9: Vent terminal clearances
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 7).
•
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 10: 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 24" 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 10, to gain required
clearance.
•
Use a 45° elbow on the exhaust termination to launch the plume up and off
the sidewall, for protection of wall.
INSTALLATION AND OPERATION INSTRUCTIONS