Lochinvar SNA400-125 3Sidewall direct venting continued, Vent/air termination – sidewall

TM

Installation & Service Manual

3Sidewall direct venting (continued)

Vent/air termination – sidewall

Figure 3-1CAlternate Venting Arrangement (if Space Allows) w/Field Supplied Fittings

TO BOILER

INTAKE AIRCOUPLING

CONNECTION

12” MIN

15” MAX

FROM BOILER

VENT PIPE

CONNECTION

BIRD SCREEN

12”

MIN

BIRD

SCREEN

ALTERNATE VENTING ARRANGEMENT

(IF SPACE PERMITS)

5.Maintain clearances as shown in FIG.’s 3-1A thru 3-3B, pages 18 and 19. 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.

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 3-2Clearance to Gravity Air Inlets

12"

MIN.

VENT / AIR

TERMINATION

12" MIN.

12" MIN.

Figure 3-2BAlternate Clearance to Gravity Air Inlets w/Field Supplied Fittings

Figure 3-3AClearance to Forced Air Inlets

IF LESS

THAN 10’

VENT / AIR	36"
TERMINATION
	MIN.

FORCED AIR

INLET

7' MIN. ABOVE ANY PUBLIC WALKWAY

Figure 3-3BAlternate Clearance to Forced Air Inlets w/Field Supplied Fittings

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