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Vent connections
After the location for the vent terminal has been selected as
outlined in Figure 3, use the following illustrations for instal-
lation:
Figure 3A - Locating Clearance Hole For Vent.
Cut a clearance hole, approximately 178mm (7 in.) in diam-
eter, through the exterior wall for the vent assembly. The
minimum height should not be less than 1.72m (68 in.) for
40 gal. models and not less than 1.93m (76 in.) for 50 gal.
models, as measured from the hole center to bottom of
water heater. The maximum height recommended is 2.28m
(90 in.) or in compliance with Figure 3M.
* If the exterior wall is less than 356mm (14 in.) thick, the
clearance from the vent to combustible materials within the
hole can be 0mm (0 in.). If the wall thickness exceeds
356mm (14 in.), maintain a clearance of 25mm (1 in.) to
combustible materials within the hole.
Figure 3B - Moving Water Heater To Its Final Installed
Location.
Move the water heater to its final installed location. Make
certain clearances from combustible material are observed.
The maximum distance from center of water heater to out-
side wall must not be more than 2.28m (90 in.).
Figure 3C - Vent Assembly.
The vent pipe and terminal are assembled by the manufac-
turer as shown in Figure 3C. There are springs fastened
inside the corrugated pipe. When the vent pipes are pulled
to a required length, the distances between the springs will
still be equally spaced.
Figure 3D - Securing Vent Termination Assembly To The
Exterior Wall.
Introduce the 152mm (6 in.) pipe through the clearance hole
from exterior wall then secure the vent terminal to the exte-
rior wall with 4 screw anchors appropriate for the type of wall
construction. Caulk the junction of the vent terminal base
plate and the exterior wall with exterior type silicone sealant.
Figure 3E - Uncompressing Corrugated Tubing.
1. Pull the 80mm (3-1/8 in.) corrugated pipe towards the
water heater and leave some length over the water
heater’s center for bending.
2. Pull the 152mm (6 in.) corrugated pipe toward the water
heater and leave it 25mm (1 in.) shorter than 80mm (3-
1/8 in.) pipe.
3. Make sure there are two springs evenly spaced at the
bend in the pipe.
4. Use metal hangers to keep vent pipe level or with a
slope upward from the heater to terminal.
Figure 3F
Bend the 80mm (3-1/8 in.) and 152mm (6 in.) corrugated
pipe all together toward the water heater’s flue connection.
MAX. 2.28m
(90 in.)
76mm
(3 in.)
102mm
(4 in.)
102mm
(4 in.)
WALL
CLAMP
SPRING
SEALANT
REDUCER
H
SPRING
178mm (7 in.)
DIAMETER
MINIMUM
(SEE TEXT)
BOTTOM OF HEATER