56
NOTES FOR VENTING OPTIONS
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.
VENT PIPE FLUSH SHOWING COUPLING
VENT PIPE FLUSH WITH ADAPTER
VENT PIPE ADAPTER WITH GASKET
INSTALLED ON FURNACE VENT
PIPE IS CUT FLUSH WITH TOP OF
ADAPTER. PRIME AND CEMENT VENT
PIPE TO ADAPTER. ALLOW TO DRY
BEFORE INSTALLING VENT COUPLING.
ALIGN NOTCHES IN VENT PIPE
COUPLING OVER STAND-OFF
ON ADAPTER. TORQUE LOWER
CLAMP 15 LB-IN. WHEN REMAINING
VENT PIPE IS INSTALLED, TORQUE
UPPER CLAMP TO 15 LB-IN.
A13076
Fig. 43 -- Optional Vent Pipe Flush with Adaptor
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)
A13406
Fig. 44 -- Combustion Air Pipe Attachment
987MA
