22
CONCENTRIC VENT TERMINATION
A concentric vent termination kit (see
Table 11
) may be used for vertical
or horizontal terminations.
Figure 24
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 6 mm (1/4”) per 1.5 m (5’) away from the inside wall. Ensure the
combustion air intake location is above the anticipated snow level.
Figure 23 illustrates the concentric vent termination kit in a vertical
(roof) installation. Ensure the combustion air intake location is above
the anticipated snow level.
Table 11. Concentric Vent Termination Kits
Vent Dia. P/N
2” 100153586
3” 100111100
Combustion
Air
Above Anticipated Snow
Level or 450 mm (18”)
Minimum Above the Roof
Roof
Strapping
(field-supplied)
Elbow
(field-supplied)
Combustion Air
Exhaust
Flashing
(field-supplied)
Figure 23. Concentric Termination (Vertical)
ORIENTATION OF EXHAUST PIPING AND COMBUSTION
AIR PIPING RELATIVE TO EACH OTHER MAY BE HORI
-
ZONTAL (AS SHOWN) OR AT ANY OTHER ANGLE TO SUIT
THE INSTALLATION.
Combustion
Air
Strapping
(field-supplied)
Elbow
(field-supplied)
Slope:
6 mm (1/4”)/1.5 m (5’)
Wall
25 mm (1”) Minimum
Figure 24. Concentric Termination (Horizontal)
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