IBC SL 35-199 Operating Instructions Manual page 15

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.
WARNING
In areas of high snowfall,
Users must be advised to
check side wall vent and
air intake terminations on
a regular basis to ensure
blockage does not occur.
INSTALLATION
SL 35-199, SL 45-260 MODULATING GAS BOILERS
•
The exhaust outlet 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 pipes can be raised in "periscope style" after passing
through the wall, then configured as in Figure 5, 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.
•
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.
Figure 5: Sidewall vent termination - piping configuration
Figure 6: Sidewall vent termination - indoor combustion air applications
Sidewall indoor combustion air applications shall be vented as follows:
•
The exhaust outlet is to be placed 12" above grade or anticipated snow level
(18" min in Canada; check local code requirements).
•
The vent shall be terminated with a tee fitting as illustrated (see Figure 6).
•
Bird screen, as above, should be installed in both open ends of the tee.
For side venting of multiple boiler sets, group all intake terminals together with
4" (minimum) lateral spacing, and similarly group the exhaust pipes. Place the
2 groups on the same plane of the building (e.g. north facing wall). Place the 2
groups of pipes at least 3' apart (the closest intake and exhaust pipes shall be
36" - or more – apart. Use same 24" (minimum) vertical separation. Alternately,
as long as the boilers are identical models - intake and exhaust terminals can
maintain a minimum of 12" of separation horizontally from any exhaust or inlet
termination of an adjacent boiler. For alternate group terminations, contact the
IBC Factory for written guidance.
1-9