Installation & Operation Manual
4 Sidewall direct venting (continued)
Vent/air termination – sidewall
Figure
TO BOILER
INTAKE AIRCOUPLING
CONNECTION
12” MIN
15” MAX
FROM BOILER
VENT PIPE
CONNECTION
BIRD SCREEN
12”
MIN
BIRD
SCREEN
GRADE OR
SNOW LINE
ALTERNATE VENTING ARRANGEMENT
(IF SPACE PERMITS)
Figure
TO BOILER |
| |
INTAKE AIR | 12" MIN | |
CONNECTION | ||
15" MAX | ||
FROM | ||
| ||
BOILER |
| |
VENT PIPE |
| |
CONNECTION |
|
12" MIN
BIRD SCREEN
GRADE OR SNOW LINE
5. Maintain clearances as shown in FIG.’s | |
pages 22 - 23. Also maintain the following: | |
a. | Vent must terminate: |
| • At least 6 feet from adjacent walls. |
| • No closer than 12 inches below roof overhang. |
| • At least 7 feet above any public walkway. |
| • At least 3 feet above any forced air intake within |
| 10 feet. |
| • No closer than 12 inches below or horizontally |
| from any door or window or any other gravity air |
| inlet. |
b. | Air inlet must terminate at least 12 inches above |
Figure 4-2A Clearance to Gravity Air Inlets
12"
MIN.
VENT / AIR
TERMINATION 12"
MIN.
12"
MIN.
Figure
12”
MIN
BIRD
SCREEN
(TYPICAL)
12”
MIN
12”
MIN
Figure 4-3A Clearance to Forced Air Inlets
IF LESS
THAN 10’
VENT / AIR | 36" | |
TERMINATION | ||
MIN. | ||
|
FORCED AIR
INLET
7' MIN. ABOVE ANY PUBLIC WALKWAY
Figure
grade or snow line; at least 12 inches below the vent |
termination; and the vent pipe must not extend |
more than 24 inches vertically outside the building |
as shown in FIG. |
block vent pipe. |
c. Do not terminate closer than 4 feet horizontally |
from any electric meter, gas meter, regulator, relief |
valve, or other equipment. Never terminate above or |
below any of these within 4 feet horizontally. |
6. Locate terminations so they are not likely to be damaged by |
foreign objects, such as stones or balls, or subject to buildup |
of leaves or sediment. |
7’ MIN ABOVE ANY PUBLIC WALKWAY
IF LESS
THAN 10’
36”
MIN
FORCED AIR
INLET
BIRD
SCREEN
(TYPICAL)
23 
