Installation instructions
Recommended exhaust vent terminator clearances
Fig. 17
Ref. | Description | Minimum distance | |
|
|
| |
A | Directly below an opening; operable windows, doors and any non- | 36 in (twin pipe installation) | |
mechanical fresh air openings | 48 in (single pipe installation) | ||
| |||
|
|
| |
| Below a gutter, sanitary pipework or eaves | 24 in | |
B | Below a gutter, sanitary pipework or eaves, protected by metal | 12 in | |
| shielding | ||
|
| ||
|
|
| |
C | From any internal corner | 12 in | |
D* | Above ground or snow pack | 12 in | |
|
| ||
Above a paved sidewalk | 7 ft | ||
| |||
E | From an opposing wall or structure facing the termination | 24 in | |
|
| ||
From the relief valve of a gas regulator | 36 in | ||
| |||
F | From a terminator facing a terminator | 48 in | |
G | Vertically between two exhaust vent terminators on the same wall | 60 in | |
|
|
| |
H | Horizontally between two exhaust vent terminators on the same wall | 12 in | |
|
|
| |
| Horizontally and vertically from combustion air inlet of a twin pipe | 36 in | |
I** | system | ||
| |||
|
| ||
|
|
| |
| From the gravity combustion air inlet any other equipment | 48 in | |
J | From any external corner | 12 in | |
K | Horizontally from an opening; operable windows, doors and any non- | 12 in (twin pipe installation) | |
mechanical fresh air openings | 48 in (single pipe installation) | ||
| |||
|
|
| |
L | Vertically from a wall, roof slope, or obstruction (venting through a flat | see Chapter 3.6.5 | |
or pitched roof) | |||
|
| ||
|
|
|
Table 6
* Subject to local codes and anticipated snow level
**Other equipment that operates with a mechanical air inlet may require greater distances, reference manufacturer's instructions NOTE: terminating exhaust vent under a deck is not recommended
6 720 608 263 | 17 |