Installing The Vent Termination - International comfort products F9MVE Installation Instructions Manual

INSTALLATION INSTRUCTIONS
Optional Installation of the Vent Pipe
NOTE: DO NOT USE
POLYPROPYLENE VENTING SYSTEMS.
This option provides a disconnect point for the vent pipe. The
vent pipe must be cemented to the plastic vent pipe adapter to
maintain a sealed vestibule. See Figure 42 and Figure 43
1. Insert a length of vent pipe through the casing into the
outlet of the vent elbow.
2. Slide the plastic vent pipe adapter over the length of the
vent pipe down to the furnace casing. Mark the pipe
where it is flush with the outlet of the adapter.
3. Remove the pipe from the furnace and the adapter and
cut off any excess pipe.
4. Clean and prime the end of the pipe that is flush with the
vent adapter with a primer that is appropriate for the type
of pipe being used.
5. Re−insert the pipe through the casing into the vent
elbow.
6. Tighten the clamp around the outlet of the vent elbow.
Torque the clamp to 15 lb−in.
7. Apply cement to the end of the pipe and to the inside of
the plastic vent adapter.
8. Slide the adapter over the vent pipe and align the screw
holes in the adapter with the dimples in the furnace
casing.
9. Pilot drill 1/8−in. screw holes for the adapter in the casing
and secure the adapter to the furnace with sheet metal
screws.
10. Loosen the clamps on the rubber vent coupling.
11. Slide the end of the coupling with notches in it over the
standoffs in the vent pipe adapter.
12. Tighten the clamp of the coupling over the vent pipe
adapter. Torque the lower clamp around the vent pipe
adapter to 15 lb−in.
13. Pilot drill a 1/8−in. hole in the combustion air pipe
adapter.
14. Complete the vent and combustion air pipe as shown in
"Install the Vent and Combustion Air Pipe"
NOTICE
FOR POLYPROPYLENE VENTING SYSTEMS
When using polypropylene venting systems, all venting
materials used, including the vent terminations, must
be from the same manufacturer.
WARNING
!
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.
48
THIS TECHNIQUE FOR
Specifications subject to change without notice.
Figure 56 Combustion Air Pipe
12" (256mm) minimum
to
60"(1524 mm) or
1 additional elbow maximum
CASING SIDE OR TOP ATTACHMENT
COMBUSTION AIR PIPE
(NON-DIRECT VENT FOR ALL MODELS EXCEPT MODULATING UNLESS
INSTALLED IN ATTIC OR CRAWL SPACE)

Installing the Vent Termination

Roof Terminations
A roof termination of any type will require a 4-in. (102 mm)
flashing for a 2−in. (50 mm ND) concentric vent or a 5−in. (127
mm) diameter flashing for a 3-in. (80 mm ND) concentric vent
kit. For two-pipe or single pipe vent systems, a flashing for each
pipe of the required diameter will be necessary.
It is recommended that the flashing be installed by a roofer or
competent professional prior to installing the concentric vent.
The terminations can be installed on a flat or pitched roof.
Concentric Vent
Single or multiple concentric vent must be installed as shown in
Figure 47. Maintain the required separation distance between
vents or pairs of vents as shown in Figure 47
clearance shown in Figure 59.
WARNING
!
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: Follow the instructions of the vent terminal
manufacturer. These instructions are provided as a reference
only.
Cut one 4−in. (102 mm) diameter hole for 2−in. (50 mm ND) kit,
or one 5−in. (127 mm) diameter hole for 3−in. (80 mm ND) kit in
the desired location.
Loosely assemble concentric vent/combustion air termination
components together using instructions in kit.
Slide assembled kit with rain shield REMOVED through hole in
wall or roof flashing.
NOTE: Do not allow insulation or other materials to accumulate
inside of pipe assembly when installing it through hole.
Gas Furnace: (F/G)9MVE
A13406
and all
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