Concentric Vent Termination - A.O. Smith BPD-80 Series Installation And Operating Manual

CONCENTRIC VENT TERMINATION

A concentric vent termination kit (see Table 3) may be
used for vertical or horizontal terminations. Figure 32
illustrates the concentric vent kit for a horizontal (side wall)
installation. To prevent rain water from entering the exhaust
outlet, slope the vent kit at a downward pitch of 1/4" per
5' away from the inside wall. Ensure the combustion
air intake location is above the anticipated snow level.
Figure 33 illustrates the concentric vent termination kit
in a vertical (roof) installation. Ensure the combustion air
intake location is above the anticipated snow level.
VENT DIA.
3"
Table 3.
ORIENTATION OF EXHAUST PIPING AND COMBUSTION AIR PIPING RELATIVE
TO EACH OTHER MAY BE VERTICAL (AS SHOWN) OR AT ANY OTHER ANGLE
TO SUIT THE INSTALLATION.
EXHAUST
COMBUSTION
AIR
Figure 32.
30
P/N
100111100
STRAP
(FIELD
SUPPLIED)
SLOPE 1/4" OVER 5'
ELBOW
(FIELD
SUPPLIED)
45° ELBOW
(SEE
LOCAL
CODES)
VENT SCREEN
INSIDE
COMBUSTION
AIR
FLASHING (FIELD
SUPPLIED)
EXHAUST
Figure 33.
COMBUSTION
AIR
WALL
PIPE NIPPLE
12" ABOVE
ANTICIPATED
SNOW LEVEL OR
12" MIN. ABOVE
ROOF.
ROOF
STRAP
(FIELD
SUPPLIED)
ELBOW
(FIELD
SUPPLIED)
COMBUSTION
AIR
PIPE NIPPLE (USE
WITH ELBOW)
90° ELBOW
(SEE LOCAL
CODES)
1" MINIMUM
VENT SCREEN
INSIDE
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