IBC SL Series Installation & Operating Manual page 27

Air intake installation
Warning
When using indoor air options, supply adequate combustion air to the boiler room
according to the requirements of all applicable codes.
At a new construction site, or during renovations, action must be taken to protect the boiler from
drywall dust or other construction related contaminants; combustion air should be drawn from a
clean source (e.g. outdoors) and the boiler should be isolated from interior dust sources. Do not
seal boiler case openings directly when firing (See list of known contaminants on the
safety instructions on page
type is permitted.
Warnings
In addition to preventing ingestion of chemical contaminants, ensure air intake
terminals are not installed in locations where contamination might occur due to
ingestion of particulate foreign material (dust, dirt and debris).
Configure intake air openings, so that rain or other forms of moisture cannot
enter the air intake piping system. Otherwise serious damage to the boiler may
result.
Notes
When installing air intake piping, ensure that a "trap" is not formed in the piping
causing a build-up of water and blockage of intake air. Such blockages will
cause a boiler safety shut-down.
Filters require checking and cleaning or replacing on a regular schedule based
on the severity of the problem.
Exhaust venting installation
Exhaust venting must slope down towards the boiler with a pitch of at least ¼" per foot (PP vent:
follow PP manufacturer requirements for slope), so condensate runs back towards the trap.
top of the boiler, then runs horizontally or vertically to the outdoors. Screen material can be placed
at the outlet as appropriate for the environment (e.g., insects, dust).
3). For inlet air, 4" Schedule 40 PVC, CPVC, ABS, or PP piping of any
Ensure pipe and fittings are beveled for trouble-free insertion
through exhaust and intake pipe gaskets
Figure 11 Pipe and fitting beveling
Exhaust piping is inserted directly into the left connector on the
23
3.7.4 Direct vent
Important