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935CA: Installation, Start-up, Operating and Service and Maintenance Instructions
!
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 Ter-
mination Kit
(Table
14) or by field-supplied brackets or supports fas-
tened 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
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, see
5. Disassemble loose pipe fittings. Clean and cement using same
procedures as used for system piping. DO NOT CEMENT
POLYPROPYLENE FITTINGS.
2-Pipe and 1-Pipe 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
(Table
14) or by field-supplied brackets or sup-
ports 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 assembly on
combustion-air pipe.
3. Install bracket, see
Fig.
62.
NOTE: For applications using vent pipe option indicated by dashed
lines (see
Fig. 62
and
Fig.
63), rotate vent elbow 90_ from position.
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
NOTICE
Fig.
62.
NOTICE
4. Disassemble loose pipe fittings. Clean and cement using same
procedures as used for system piping. DO NOT CEMENT
POLYPROPYLENE FITTINGS.
(Direct Vent / 2-Pipe System ONLY)
When two or more furnaces are vented near each other, two vent
terminations may be installed (see
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, see
Fig.
62, to avoid recirculation of vent gases.
7
1
3
2
&
5
UPFLOW LEFT CONFIGURATION
Any other unused
knockout may be used
for combustion air
connection.
Rotate vent elbow to
required position.
UPFLOW RIGHT CONFIGURATION
Any other unused
knockout may be used
for combustion air
connection.
UPFLOW VERTICAL VENT
Fig. 56 – Upflow Configurations (Appearance may vary)
See "Notes for Venting Options"
38
Fig.
62), but next vent termination, or
6
Any other unused
knockout may be used
for combustion air
connection.
Rotate vent elbow to
4
5
required position.
7
6
2
5
1
3
4
5
3
7
6
2
5
1
4
5
A11309A
A11308A
A11310A
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