
328765-000 www.
gsw-wh .com 25
Side Wall Vent Terminal Installation
Important:
When terminating the vent on a side wall, the
following speci
fi
cations pertaining to terminal location must
be followed (see Figure 20).
1. The air intake terminal and the exhaust vent terminal
must terminate on the same exterior wall.
2. The vertical centerline of the air intake terminal must
be located at a minimum of 203mm (8”) and not more
than 610mm (24”) from the vertical centerline of the
exhaust vent terminal.
3. The horizontal centerline of the air intake terminal
may not be located more than 100mm (4”) below the
horizontal centerline of the exhaust vent terminal.
4. To avoid exhaust recirculation, the air intake terminal
may be rotated away from the exhaust vent terminal
(see Figure 20).
EXHAUST VENT
TERMINAL
INTAKE VENT
TERMINAL
100mm
(4”) MAX
203mm (8”)
MIN, 610mm
(24”) MAX.
L
C
L
C
L
C
L
C
SIDE WALL
Figure 20
Roof Vent Terminal Installation
Important:
When terminating the vents through a roof,
the following speci
fi
cations pertaining to terminal location
must be followed (see Figure 21).
1. The air intake termination and the exhaust vent
termination shall extend above anticipated snow level
or at least 450mm (18”) above the roof.
2. Must provide proper support for all pipes protruding
through roof.
3. The vertical roof terminations should be sealed with a
plumbing roof boot or equivalent
fl
ashing.
A
B
25mm
(1”)
EXHAUST
VENT
TERMINAL
INTAKE
VENT
TERMINAL
203mm (8”) MIN.,
610mm (24”) MAX.
25mm
(1”)
“A” & “B”: ABOVE SNOW
ACCUMULATION LEVEL
OR 450mm (18”) MIN.
ABOVE ROOF.
Figure 21
4. The air intake termination and the exhaust vent
termination must penetrate the same side of roof.
5. The centerline of the air intake termination and the
centerline of the exhaust vent termination must not
be closer than 203mm (8”) and not farther away than
610mm (24”).
6. The air intake terminal and the exhaust vent terminal
must be oriented facing downward and the same
direction.
Concentric Vent Termination Kit Installation
A concentric vent termination kit (see Table 2) may be
used for vertical or horizontal terminations.
STRAP (FIELD
SUPPLIED)
COMBUSTION
AIR
COMBUSTION
AIR
ABOVE SNOW
ACCUMULATION
LEVEL OR 450mm
(18”) MIN. ABOVE
ROOF.
ELBOW (FIELD
SUPPLIED)
SCREEN INSIDE
EXHAUST
ROOF
45° ELBOW
(SEE LOCAL
CODES)
FLASHING (FIELD
SUPPLIED)
PIPE NIPPLE
Figure 22
Figure 22 illustrates the concentric vent termination kit in a
vertical (roof) installation. Ensure the combustion air intake
location is above the anticipated snow level.
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