John Wood Power Direct Vent (ENERGY STAR) - Manual (Page 12)

Figure 8. Vertical Vent Installation
A
B
25mm
(1 in.)
EXHAUST
VENT
TERMINAL
INTAKE
VENT
TERMINAL
203mm (8 in.)
MIN.,610mm
(24 in.) MAX.
25mm
(1 in.)
“A” & “B”: ABOVE SNOW
ACCUMULATION LEVEL
OR 457mm (18 IN.) MIN.
ABOVE ROOF.
Concentric Vent Termination Kit Installation
A concentric Vent termination kit (see Table 2) may be used
for side wall termination installations.
VENT DIA. KIT P/N
50mm (2 in.) KGAVT0701 ULC 6911088
76mm (3 in.) KGAVT0801 ULC 6911089
Table 2. Concentric Vent Kits
Figure 9 illustrates the Concentric Vent termination kit for
side wall installation. To prevent rain water from entering
the exhaust outlet, slope the vent kit at a downward pitch
of 6.5mm per 1.5m (1/4 in. per 5 ft.) away from the inside
wall. Ensure the combustion air intake location is above the
anticipated snow level.
COMBUSTION AIR
COMBUSTION
AIR
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.
ELBOW (FIELD
SUPPLIED)
SLOPE 6.5mm OVER
1.5m (1/4 in. OVER 5 ft.)
SCREEN INSIDE
STRAP (FIELD
SUPPLIED)
EXHAUST
25mm (1 in.) MAXIMUM
WALL
Figure 9. Concentric Vent Termination (Side Wall Installation)
90° ELBOW
(OPTIONAL)
PIPE NIPPLE
(OPTIONAL)
50mm (2 in.) MAX OR
915mm (36 in.) MIN
242mm (9.5 in.) MAX OR
1.105m (43.5 in.) MIN REF.
Figure 10. Dual Concentric Vent Terminations
Multiple Concentric Vent Installations
When two concentric vent kits are being installed, the vent
hood edges shall be either less than 50mm (2 in.) apart or
more than 915mm (36 in.) apart. Spacings between 50mm
(2 in.) and 915mm (36 in.) are not allowed due to the pos-
sibility of exhaust cross circulation (see Figure 10).
When more than 2 kits are installed only 2 of them shall be
less than 50mm (2 in.) apart. Never install 3 termination kits
together less than 50mm (2 in) apart (see Figure 11).
50mm
(2 in.) MAX
1.105m
(43.5 in.) REF.
915mm
(36 in.) MIN
242mm
(9.5 in.) REF.
Figure 11. Multiple Concentric Vent Terminations
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