Top Vent - Vertical Termination (continued)
3.Match the amount of vertical you have in the system with the chart to find the appropriate position to set the Flue Restrictor (see Figure 7.9).
Vertical | TOP VENT | REAR VENT | |||
NG | LP | NG | LP | ||
| |||||
4 ft. | No | No | No | ||
Restrictor | Restrictor | Restrictor | |||
|
| ||||
8 ft. | No | ||||
Restrictor | |||||
|
|
|
| ||
15 ft. | |||||
|
|
|
|
| |
20 ft. | |||||
|
|
|
|
| |
25 ft. | |||||
|
|
|
|
| |
30 ft. | |||||
|
|
|
|
| |
35 ft. | |||||
|
|
|
|
| |
40 ft. | |||||
|
|
|
|
|
Figure 7.9
Note: If the
Example: Top vent 40 ft vertical with DVP pipe =
Two Elbows
V2
H1
Figure 7.11
4. Center the Flue Restrictor on vent and secure in place by using two
5. Reinstall the Exhaust Shield.
1 2 3 4 5
SETTING
1 2 3 4 5
Figure 7.10
| V1 | H1 Maximum | V2 | V1 + V2 Min. | ||
Elbow only | 2 ft. | 610 mm | * | * | * | |
6 in. | 152 mm | 6 ft. | 1.8 m | * | * | * |
2 ft. | 610 mm | 11 ft. | 3.4 m | * | * | * |
3 ft. | 914 mm | 16 ft. | 4.9 m | * | * | * |
4 ft. | 1.2 m | 20 ft | 6.1 m | * | * | * |
V1 + V2 + H1 = 50 ft (15.2 m) Maximum
*No specific restrictions on this value EXCEPT V1 + V2 + H1 cannot exceed 50 ft (15.2 m)
V1
28 | Heat & Glo • |