International comfort products N9MSB Installation Instructions Manual page 46

INSTALLATION INSTRUCTIONS
Horizontal Right Configurations (CONTINUED)
HORIZONTAL RIGHT − LEFT VENT CONFIGURATION
Representative drawing only, some models may vary in appearance.
HORIZONTAL RIGHT − RIGHT VENT CONFIGURATION
Representative drawing only, some models may vary in appearance.
* See NOTES following figures.
NOTES:
1. Attach vent pipe adapter with gasket to furnace casing.
2. Align notches in rubber coupling over standoffs on
adapter. Slide clamps over the coupling.
3. Slide vent pipe through adapter and coupling into vent
elbow.
4. Insert vent pipe into vent elbow.
5. Torque all clamps 15−lb.−in.
6. Attach combustion air pipe adapter with gasket to
furnace.
7. Attach combustion air pipe to adapter with silicone. Pilot
drill a 1/8−in. Hole in adapter and secure with a #7 x
1/2−in. Sheet metal screw.
46
Installing the Vent Pipe Adapter and
Combustion Air Pipe Adapter
CARBON MONOXIDE POISONING HAZARD
Failure to follow this warning could result in personal
injury or death.
To route the vent pipe and combustion air pipe through
the furnace, the manufacturer supplied kit must be
used. Failure to properly seal the blower compartment
from the furnace vestibule could result in the
circulation
structure. The vent pipe and combustion air pipe must
be a continuous pipe while passing through the blower
compartment. Seals supplied in this kit must be
installed per the instructions provided. Follow all
procedures outlined in these instructions.
CARBON MONOXIDE POISONING HAZARD
Failure to follow this warning could result in personal
injury or death.
DO NOT use cement to join polypropylene venting
systems. Follow the polypropylene venting system
manufacturer s instructions for installing polypropylene
venting systems.
NOTE: The rubber coupling that attaches to the vent pipe
adapter must be used. The adapter seals the vent pipe to the
casing and reduces the strain on the vent elbow attached to the
inducer.
1. Apply the gaskets to the vent pipe and combustion air
pipe adapters. If supplied, remove and discard round
center "slug" from interior of gasket. See Figure 41.
NOTE: The vent pipe adapter can be distinguished from the
inlet pipe adapter by the absence of an internal pipe-stopping
ring. The vent pipe can pass through the vent pipe adapter; it
cannot pass through the inlet pipe adapter.
2. Align the screw holes in the plastic vent pipe adapter with
the dimples in the casing.
3. Pilot drill the screw holes for the adapter in the casing
and attach the vent pipe adapter to the furnace with
sheet metal screws
4. Slide the end of the rubber vent coupling with notches in
it over the standoffs on the vent pipe adapter.
5. Insert a length of vent pipe through the coupling into the
outlet of the vent elbow.
6. Tighten the clamp around the outlet of the vent elbow.
Torque the clamp to 15 lb−in.
The following instructions are for PVC/ABS DWV vent
piping, only. DO NOT USE THESE TECHNIQUES FOR
POLYPROPYLENE VENT PIPING SYSTEMS. See the
polypropylene vent system manufacturer's instructions
for installing polypropylene venting systems.
Specifications subject to change without notice.
Gas Furnace: N9MSB, N9MSE
WARNING
!
of carbon monoxide
WARNING
!
NOTICE
throughout the
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