9.While cement is still wet, twist pipe into socket with 1/4 turn. Be sure pipe is fully inserted into fitting socket.
10.Wipe excess cement from joint. A continuous bead of cement will be visible around perimeter of a properly made joint.
11.Handle pipe joints carefully until cement sets.
12.Support
13.Slope
14.Use appropriate methods to seal openings where vent and
III.CONCENTRIC VENT AND
NOTE: If these instructions differ from those packaged with termination kit, follow kit instructions.
1.The
→2. The
3.The
→4. The
NOTE: Shaded parts in Fig. 30, 31, 32, 33, and 34 are considered to be termination. These components should NOT be counted when determining pipe diameter. Roof termination is preferred since it is less susceptible to damage, has reduced chances to take
in contaminants, and has less visible vent vapors. (See Fig. 30 or 31.) Sidewall termination may require sealing or shielding of building surfaces with a corrosive resistance material due to corrosive combustion products of vent system.
A. Extended Exposed Sidewall Pipes
Sidewall
1.Determine
2.Using winter design temperature (used in load calculations), find appropriate temperature for your application and fur- nace model.
3.Determine required insulation thickness for exposed pipe lengths.
NOTE: Pipe length (ft) specified for maximum pipe lengths located in unconditioned spaces cannot exceed total allowable pipe length as specified in Table 6.
B.Two-Pipe 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 5.
b.Termination kit should be positioned where vent vapors will not damage plants/shrubs or air conditioning equip- ment.
c.Termination kit should be positioned so that it will not be affected by wind eddy (such as inside building corners) or 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.
→TABLE 7ÐMAXIMUM ALLOWABLE EXPOSED VENT PIPE LENGTH (FT) WITH AND WITHOUT INSULATION IN WINTER DESIGN TEMPERATURE AMBIENT*
UNIT | WINTER DESIGN | MAX PIPE | WITHOUT | WITH | |
TEMPERATURE | DIAMETER | ||||
SIZE | INSULATION | THICKER INSULATION² | |||
(°F) | (IN.) | ||||
|
|
| |||
| 20 | 51 | 70 | ||
040 |
|
|
|
| |
0 | 28 | 70 | |||
| 16 | 70 | |||
| 20 | 2 | 65 | 70 | |
060 |
|
|
|
| |
0 | 2 | 35 | 70 | ||
| 2 | 20 | 70 | ||
| 20 | 70 | 70 | ||
080 |
|
|
|
| |
0 | 47 | 70 | |||
| 28 | 70 | |||
| 20 | 3 | 70 | 70 | |
100 | 0 | 3 | 50 | 70 | |
| 3 | 28 | 70 | ||
| 20 | 4 | 70 | 70 | |
120 | 0 | 4 | 48 | 70 | |
| 4 | 23 | 70 | ||
| 20 | 4 | 70 | 70 | |
140 | 0 | 4 | 57 | 70 | |
| 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 6.
² Insulation thickness based on R value of 3.5 per in.