Lochinvar Armor AWH0400N Installation & Operation Manual page 23

4
Sidewall direct venting
Vent/air termination – sidewall
Figure 4-1C Alternate PVC/CPVC/SS Vent Termination
- Typical Stainless Steel Sidewall Termination of Air and
Vent w/Field Supplied Fittings
TO BOILER
INTAKE AIR
CONNECTION
FROM BOILER
VENT PIPE
CONNECTION
NOTICE
PVC/CPVC or ABS is acceptable air inlet pipe material.
Figure 4-2 Alternate PVC/CPVC/SS/ Polypropylene Sidewall
Termination w/Field Supplied Fittings
TO BOILER
INTAKE AIR
CONNECTION
FROM BOILER
VENT PIPE
CONNECTION
BIRD SCREEN
12" (305 MM) MIN
12" (305 MM) MIN
GRADE OR
SNOW LINE
BIRD SCREEN
12" (305 MM) MIN
BIRD SCREEN
12" (305 MM) MIN
GRADE OR
SNOW LINE
Installation & Operation Manual
(continued)
5. Maintain clearances as shown in FIG. 4-1A thru 4-5B.
Also maintain the following:
a. Vent must terminate:
• At least 6 feet from adjacent walls.
• No closer than 12 inches below roof overhang.
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.
Figure 4-3A Clearance to Gravity Air Inlets
Figure 4-3B Alternate Clearance to Gravity Air Inlets w/
Field Supplied Fittings
12"
MIN.
VENT / AIR
TERMINATION
4'
MIN.
12"
MIN.
12"
MIN.
BIRD
SCREEN
(TYPICAL)
4'
MIN.
12"
MIN.
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