RBI Boiler, Installation And Operation Instructions Manual

Page: 65 / 154

65
11 - INSTALLATION - Vent and combustion air
11.6 - Air inlet pipe
materials:
WARNING!!!
The air
inlet pipe(s) must be sealed.
Improper sealed can result
in excessive levels of carbon
monoxide which can result
in severe personal injury or
death!
Choose acceptable combustion air
inlet pipe materials from the following
list:
- PVC, CPVC or ABS
- AL29-4C, stainless steel material
to be sealed to speci fi cation of its
manufacturer.
- Polypropylene material to be sealed
to speci fi cation of its manufacturer.
WARNING!!!
Using air
intake materials other than
those specifi ed, mixing the
specifi ed materials, failure to
properly seal all seams and
joints or failure to follow the
manufacturer’s instructions
can result in fl ue gas
recirculation, spillage of fl ue
products and carbon monoxide
emissions causing severe
personal injury or death.
NOTICE!
Polypropylene and stainless
steel pipe may require an adapter (not
provided) to transition between the air
inlet connection on the appliance and
the air inlet pipe
NOTICE!
The use of insulated
material for the combustion air
inlet pipe is recommended in cold
climates to prevent the condensation
of airborne moisture in the incoming
combustion air.
11.6.1 - Sealing of PVC,
CPVC or ABS air inlet
pipe
The PVC, CPVC, or ABS air inlet pipe
should be cleaned and sealed with the
pipe manufacturer’s recommended
solvents and standard commercial
pipe cement for the material used.
The PVC, CPVC or ABS air inlet
pipe should use a silicone sealant to
ensure a proper seal at the appliance
connection and the air inlet cap
connection. ABS should use a screw
type clamp to seal the pipe to the
appliance air inlet and the air inlet
cap. Proper sealing of the air inlet
pipe ensures that combustion air will
be free of contaminants and supplied
in proper volume.
When a sidewall or vertical rooftop
combustion air supply system is
disconnected for any reason, the air
inlet pipe must be resealed to ensure
that combustion air will be free of
contaminants and supplied in proper
volume.
WARNING!!!
Failure to
properly seal all joints and
seams as required in the air
inlet piping may result in fl ue
gas recirculation, spillage
of fl ue products and carbon
monoxide emissions causing
severe personal injury or
death.