Installation & Operation Manual
Vent/air termination – sidewall
4
Sidewall direct venting
(continued)
5. Maintain clearances as shown in FIG.’s 4-1A thru 4-3B,
pages 24 thru 26. 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
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. 4-1B.
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.
VENT / AIR
TERMINATION
12"
MIN.
12"
MIN.
12"
MIN.
Figure 4-3A Clearance to Gravity Air Inlets
12" (305 MM) MIN
15" (381 MM) MAX
12" (305 MM) MIN
FROM BOILER
VENT PIPE
CONNECTION
TO BOILER
INTAKE AIR
CONNECTION
BIRD SCREEN
BIRD SCREEN
GRADE OR
SNOW LINE
Figure 4-2 Alternate PVC/CPVC/SS/ Polypropylene Sidewall
Termination Models 151 - 801 w/Field Supplied Fittings
Figure 4-1C Alternate PVC/CPVC/SS Vent Termination
- Typical Stainless Steel Sidewall Termination of Air and
Vent Models 151 - 801 w/Field Supplied Fittings
BIRD
SCREEN
(TYPICAL)
12”
MIN.
12”
MIN.
12”
MIN.
Figure 4-3B Alternate Clearance to Gravity Air Inlets w/
Field Supplied Fittings
25
12" (305 MM) MIN
15" (381 MM) MAX
12" (305 MM) MIN
FROM BOILER
VENT PIPE
CONNECTION
TO BOILER
INTAKE AIR
CONNECTION
BIRD SCREEN
GRADE OR
SNOW LINE
PVC/CPVC or ABS is acceptable air inlet pipe material.
NOTICE