Tempstar F97CMN Installation, Start-Up, Operating And Service And Maintenance Instructions page 47

F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions
Two-Pipe (Direct Vent) and Single-Pipe (Ventilated
Combustion Air) Terminations
Single and two pipe vent terminals must be installed as shown in
and 41. Maintain the required separation distance between vents or pairs
of vents as shown in Fig. 38
Fig. 43.
!
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
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. diameter hole
for 3-in. kit.
2. Loosely assemble concentric vent/combustion air termination
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 positioned no
more than 1-in. (25 mm) from wall as shown in
5. Disassemble loose pipe fittings. Clean and cement using same
procedures as used for system piping. DO NOT CEMENT
POLYPROPYLENE FITTINGS.
2-Pipe (Direct Vent) and 1-Pipe (Ventilated Combustion
Air) Vent Termination
NOTE: Follow the instructions of the vent terminal manufacturer. These
instructions are provided as a reference, only.
!
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
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.
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
and Fig. 39. and all clearance shown in
NOTICE
or by field-supplied brackets or
Fig. 38.
NOTICE
Table 10 or by field-supplied brackets
2. Loosely install elbow in bracket (if used) and place assembly on
combustion-air pipe.
3. Install bracket as shown in
Fig. 38
NOTE: For applications using vent pipe option indicated by dashed
lines in Fig. 38 and 41, rotate vent elbow 90_ from position.
4. Disassemble loose pipe fittings. Clean and cement using same
procedures as used for system piping. DO NOT CEMENT
POLYPROPYLENE FITTINGS.
For Ventilated Combustion Air Terminations, terminate as shown in
Fig. 39.
(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
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
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.
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Fig. 38 and 50.
Fig. 38, but next vent
Fig. 38 to avoid recirculation of vent