Payne PG9MAA, Installation Manual

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For applications using vent pipe option indicated by dashed lines in Fig. 37, rotate vent elbow 90° from position shown in Fig. 43.
4. Disassemble loose pipe fittings. Clean and cement using same procedures as used for system piping.
5. Check required dimensions as shown in Fig. 40, 43, or 44.
CONCENTRIC VENT/AIR TERMINATION KIT
1. Determine location for termination.
Consideration of the following should be made when determining an appropriate location for termination kit:
a. Comply with all clearance requirements as stated in Table 7.
b. Termination kit should be positioned where vent vapors will not damage plants/shrubs or air conditioning equipment.
c. Termination kit should be positioned so it will not be affected by wind eddy (such as inside building corners) or that may allow
recirculation of flue gases, airborne leaves, or light snow.
d. Termination kit should be positioned where it will not be damaged by or subjected to foreign objects, such as stones, balls, etc.
e. Termination kit should be positioned where vent vapors are not objectionable.
2. Cut one 4-in. diameter hole for 2-in. kit, or one 5-in. diameter hole for 3-in. kit.
3. Loosely assemble concentric vent/air termination components together using instructions in kit.
4. 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.
Roof terminations—Locate assembly through roof to appropriate height as shown in Fig. 41.
Sidewall terminations—Locate assembly through sidewall with rain shield positioned no more than 1-in. from wall as shown in Fig. 42.
Table 10—Maximum Allowable Exposed Vent Pipe Length (ft) With and Without Insulation in Winter Design Temperature
Ambient*
FURNACE
SIZE
WINTER DESIGN
TEMPERATURE
(°F)
MAX PIPE
DIAMETER
(IN.)
WITHOUT
INSULATION
WITH 3/8–IN. OR
THICKER INSULATION†
040
20 1.5 51 70
0 1.5 28 70
-20 1.5 16 70
20 2 45 70
0 2 22 70
-20 2 10 58
060
20 2 65 70
0 2 35 70
-20 2 20 70
080
20 2 55 55
0 2 48 55
-20 2 30 55
20 2.5 70 70
0 2.5 47 70
-20 2.5 28 70
100
20 2.5 40 40
0 2.5 40 40
-20 2.5 38 40
20 3 70 70
0 3 50 70
-20 3 28 70
120
20 3 70 70
0 3 61 70
-20 3 37 70
20 4 70 70
0 4 48 70
-20 4 23 70
140
20 3 60 60
0 3 60 60
-20 3 44 60
20 4 70 70
0 4 57 70
-20 4 30 70
* Pipe length (ft) specified for maximum pipe lengths located in unconditioned spaces. Pipes located in unconditioned space cannot exceed total allowable pipe length as
specified in Table 10.
† Insulation thickness based on R value of 3.5 per in.
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