Air Inlet Pipe Materials - Slant/Fin VSL-160B Installation Instructions Manual

10 - INSTALLATION - Vent and combustion air
10.6 - 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 Dryer Vent
or Sealed Flexible Duct (not
recommended for rooftop air inlet)
- Galvanized steel vent pipe with joints
and seams sealed as specifi ed in
this section.
- Type "B" double-wall vent with joints
and seams sealed as specifi ed in
this section.
- AL29-4C, stainless steel material
to be sealed to specifi cation of its
manufacturer.
- Polypropylene material to be sealed
to specifi cation of its manufacturer.
NOTICE! PVC, CPVC, ABS Dryer
Vent 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
WARNING!!!
Using vent
or 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 personal injury,
death or property damage.
NOTICE The use of double-wall
vent or 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.
10.6.1 - Sealing of Type
"B" double-wall vent
material or galvanized
vent pipe
Sealing of Type "B" double-wall vent
material or galvanized vent pipe
material used for air inlet piping
on a sidewall or vertical rooftop
Combustion Air Supply System:
a. Seal all joints and seams of the air
inlet pipe using either Aluminum
Foil Duct Tape meeting UL
Standard 723 or 181A-P or a high
quality UL Listed silicone sealant.
b. Do not install seams of vent pipe on
the bottom of horizontal runs.
c. Secure all joints with a minimum
of three sheet metal screws or
pop rivets. Apply Aluminum Foil
Duct Tape or silicone sealant to
all screws or rivets installed in the
pipe.
d. Ensure that the air inlet pipes are
properly supported.
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.
35
10.6.2 - 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, ABS Dryer Vent or
Flex Duct air inlet pipe should use a
silicone sealant to ensure a proper
seal at the appliance connection and
the air inlet cap connection. Dryer
vent or Flex Duct 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.