3
Figure 3. roof installation
Maintain 12" (18" for
Canada) Min. clearance
above roof or highest
anticipated snow level,
max. 24" above roof.
Combustion
Air
Support
(Field Supplied)
Vent
Combustion Air
45˚ Elbow
(Field Supplied)
Roof Boot/
Flashing
(Field Supplied)
Vent
through structure's hole (Figure 5).
noTe: Do not allow
insulation or other materials to accumulate inside pipe
assembly when installing through hole.
5. Secure the assembly to the structure as shown in Figure
5 using field supplied metal strapping or equivalent
support material.
noTe1: Ensure termination location clearance as
shown in Figure 5.
noTe2: If assembly needs to be extended, the 2 pipes
supplied in the kit may be replaced by using the same
diameter, field supplied SDR-26 PVC (D2241) pipe.
Do not expand dimension "D" more than 60 inches
(See Figure 2).
Warning:
do not operate the furnace with rain cap removed.
recirculation of combustion products may
occur, or water may accumulate inside larger
combustion air pipe and flow into the burner
enclosure. Failure to follow this warning could
result in product damage or improper operation,
personal injury or death.
CauTion:
do noT use field supplied couplings to extend
pipes. airflow restriction will occur and the
furnace pressure switch may cause intermittent
operation.
6. Cement field supplied furnace combustion air and vent
pipes to concentric vent termination assembly.
7. Run furnace through a complete heat cycle to ensure
combustion air and vent pipes are properly connected
to concentric vent termination connections.
Figure 4. rain Cap to Vent pipe alternate assembly
Drill Clearance Hole in Rain Cap and Pilot
Hole in Vent Pipe
Stainless Steel Screw
(Field Supplied)
is desired for cleaning. See Figure 4.
6. Cement field supplied furnace combustion air and vent
pipes to concentric vent termination assembly.
7. Run furnace through a complete heat cycle to ensure
combustion air and vent pipes are properly connected
to concentric vent termination connections.
procedure 2: Side Wall Termination
1. Determine the best location for termination kit. Refer to
the Installation Instructions supplied with the furnace.
2. Cut one hole, 5” diameter if using a 3" kit or a 4” diameter
hole if using 2" kit.
3. Partially assemble the concentric vent termination kit
as shown in Figures 1 and 2.
a. Cement Y concentric vent fitting to larger diameter
kit pipe.
b. Cement rain cap to smaller diameter kit pipe.
4. Install cemented Y concentric fitting and pipe assembly
