Table of Contents
Advertisement
Disassemble loose pipe fittings. Clean and cement using same
procedures as used for system piping. DO NOT CEMENT
POLYPROPYLENE FITTINGS.
Two- -Pipe (Direct Vent) and Single- -Pipe (Ventilated
Combustion Air) Terminations
Single and two pipe vent terminals must be installed as shown in
Fig. 53 and 54. Maintain the required separation distance between
vents or pairs of vents as shown in Fig. 53 and 54. and all
clearance shown in Fig. 46 and 52.
NOTICE
RECOMMENDED SUPPORT FOR VENT
TERMINATIONS
It is recommended that rooftop vent terminations in excess of
36 inches (1 M) in vertical length be supported by EITHER
the Direct Vent Termination Kit shown in Table 10 or by
field- -supplied brackets or supports fastened to the structure.
Cut the required number of holes in the roof or sidewall for vent
and (when used) combustion air pipes. Sidewall holes for two-pipe
vent terminations should be side-by-side, allowing space between
the pipes for the elbows to fit on the pipes.
Holes in the roof for direct- -vent (two pipe) terminations should be
spaced no more than 18 in. (457 mm) apart to help avoid vent gas
recirculation into combustion air intake.
Termination elbows will be installed after the vent and (if used)
combustion air pipe is installed.
Sidewall Terminations
Concentric Vent Termination
NOTE: Follow the instructions of the vent terminal manufacturer.
These instructions are provided as a reference only.
Determine an appropriate location for termination kit using the
guidelines provided in section "Locating The Vent Termination" in
this instruction.
1. Cut one 4- -in. diameter hole for 2- -in. kit, or one 5- -in. di-
ameter hole for 3- -in. kit.
2. Loosely assemble concentric vent/combustion air termina-
tion components together using instructions in kit.
3. Slide assembled kit with rain shield REMOVED through
hole.
NOTE: Do not allow insulation or other materials to accumulate
inside of pipe assembly when installing it through hole.
4. Locate assembly through sidewall with rain shield posi-
tioned no more than 1- -in. (25 mm) from wall as shown in
Fig. 53.
5. Disassemble loose pipe fittings. Clean and cement using
same procedures as used for system piping. DO NOT CE-
MENT POLYPROPYLENE FITTINGS.
2- - Pipe (Direct Vent) and 1- - Pipe (Ventilated Combus-
tion Air) Vent Termination
NOTE: Follow the instructions of the vent terminal manufacturer.
These instructions are provided as a reference, only.
NOTICE
RECOMMENDED SUPPORT FOR VENT
TERMINATIONS
It is recommended that sidewall vent terminations in excess of
24 inches (0.6 M) in vertical length be supported by EITHER
the Direct Vent Termination Kit shown in Table 10 or by
field- -supplied brackets or supports fastened to the structure.
Determine an appropriate location for termination kit using the
guidelines provided in section "Locating The Vent Termination" in
this instruction.
1. Cut two holes, one for each pipe, of appropriate size for
pipe size being used.
2. Loosely install elbow in bracket (if used) and place assem-
bly on combustion- -air pipe.
3. Install bracket as shown in Fig. 53 and 56.
NOTE: For applications using vent pipe option indicated by
dashed lines in Fig. 53 and 54, rotate vent elbow 90_ from
position.
4. Disassemble loose pipe fittings. Clean and cement using
same procedures as used for system piping. DO NOT CE-
MENT POLYPROPYLENE FITTINGS.
For ventilated Combustion Air Terminations, terminate as
shown in Fig. 54.
(Direct Vent / 2-Pipe System ONLY)
When two or more furnaces are vented near each other, two vent
terminations may be installed as shown in Fig. 53, but next vent
termination, or pair of vent terminations, must be at least 36 in.
(914 mm) away from the first two terminations. It is important that
vent terminations be made as shown in Fig. 53 to avoid
recirculation of vent gases.
Inducer Outlet Restrictor
The loose parts bag may contain an inducer outlet restrictor. The
outlet restrictor is NOT used on these furnaces. Discard restrictor.
51
Hide quick links:
Advertisement
Table of Contents
