Bryant 350MAV Installation, Start-Up, And Operating Instructions Manual page 28

VERTICAL SEPARATION
BETWEEN COMBUSTION
CLEARANCE ABOVE HIGHEST
ANTICIPATED SNOW LEVEL.
MAXIMUM OF 24 IN. ABOVE ROOF.
MAINTAIN 12 IN.
(18 IN. FOR CANADA)
MINIMUM CLEARANCE
ABOVE HIGHEST
ANTICIPATED SNOW
LEVEL. MAXIMUM OF
24 IN. ABOVE ROOF.
Fig. 32—Concentric Vent and Combustion-Air Roof
Termination (Preferred)
OVERHANG OR ROOF
12" MINIMUM
VENT
90°
BRACKET
COMBUSTION-AIR
Fig. 34—Sidewall Termination of 12 in. or More
COUPLING
AIR AND VENT
8 3 / 4 " FOR 3" KIT
6 3 / 4 " FOR 2" KIT
MAINTAIN 12 IN. MINIMUM
Fig. 31—Roof Termination (Preferred)
VENT
COMBUSTION
AIR
A93054
12 IN. SEPARATION
BETWEEN BOTTOM OF
COMBUSTION AIR AND
BOTTOM OF VENT
MAINTAIN 12 IN.
CLEARANCE
ABOVE HIGHEST
ANTICIPATED SNOW
LEVEL OR GRADE,
WHICHEVER IS
GREATER.
A87225
ROOF
18" MAXIMUM
BRACKET
VENT
Fig. 33—Concentric Vent and Combustion-Air Side
VENT
90°
BRACKET
COUPLING
COMBUSTION-AIR
(ELBOW PARALLEL
TO WALL)
Fig. 35—Sidewall Termination of Less than 12 in.
—28—
COMBUSTION
AIR
OVERHANG OR ROOF
12" MINIMUM
1" MAXIMUM
COMBUSTION-AIR
VENT
MAINTAIN 12 IN.
CLEARANCE
ABOVE HIGHEST
ANTICIPATED SNOW
LEVEL OR GRADE,
WHICHEVER IS
GREATER.
Termination
OVERHANG OR ROOF
12" MINIMUM
12 IN. SEPARATION
BETWEEN BOTTOM OF
COMBUSTION AIR AND
BOTTOM OF VENT
MAINTAIN 12 IN.
CLEARANCE
ABOVE HIGHEST
ANTICIPATED SNOW
LEVEL OR GRADE,
WHICHEVER IS
GREATER.
A87224
A93055
A87226