6
INSTALLATION
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outside source of combustion air. A 2” inside diameter metallic pipe,
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> ' @A rodent guard (minimum ¼” wire mesh)/
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nections must be secured and airtight by either using the appropri-
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2” inside diameter pipe may
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10 feet use 2 ¾” inside diameter pipe. No combustion air supply
may exceed 10 feet.
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lated crawl space.
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If outside air is not used, it is important that combustion air is eas-
ily available to the air inlet. A closeable outside air register can
be used in tightly insulated homes. A Y
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instructions provided by the vent manufacturer, especially when
passing through a wall, ceiling or roof.
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must be sealed with 500
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C) RTV silicone sealant to ensure
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minimum of 3 screws.
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possible.
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21 1/2”
EXHAUST
PIPE
AIR
INLET
PIPE
28 1/2”
11”
6 1/2”
10 3/4”
FIGURE 5a
5 7/8”
FIGURE 7
24 3/4”
TRIM
COLLAR
28 1/2”
RODENT
GUARD
VENTILATED
CRAWL SPACE
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