14
CAUTION
Please follow all local and national codes in
regards to proper termination clearances .
In the absence of such codes, the following
clearances can be used as guidelines . Local
codes supersede these guidelines .
For sidewall terminations
Inside
corner
Exhaust
terminations
610 mm
(2 ft .)
305 mm
(1 ft .)
305 mm
(1 ft .)
Inside
corner
610 mm
(2ft .)
915 mm
(3 ft .)
915 mm
(3 ft .)
Direct-vent
terminations
For multiple sidewall exhaust
terminations (e .g . Multi-
Unit systems), an exhaust
termination must be at least
305 mm (1 ft .) away from
another exhaust termination .
An exhaust termination must
also be at least 610 mm
(2 ft .) away from an inside
corner . (If the adjacent wall
is less than 610 mm (2 ft .) of
length, the minimum required
distance away from the inside
corner will be equal to the
length of that adjacent wall .)
For
multiple-u
nit, direct-
vent sidewall terminations
that combine the intake
and exhaust into a single
penetration, space each
direct-vent termination at
least 915 mm (3 ft .) away
from each other, no matter
the orientation . A direct-vent
termination must also be at
least 610 mm (2 ft .) away
from an inside corner . (If the
adjacent wall is less than
610 mm (2 ft .) of length, the
minimum required distance
away from the inside corner
will be equal to the length of
that adjacent wall .)
3 ft .
3 ft .
3 ft .
Air supply inlet
Exhaust
termination
2 ft .
For direct-vent sidewall
terminations that use two
separate penetrations for the
intake and exhaust, distance
the intake and exhaust
terminations at least 915 mm
(3 ft .) away from each other,
no matter the orientation .
Exhaust and/or direct-vent
sidewall terminations should
be at least 610 mm (2 ft .)
away from an opposite
surface/wall . Do not place
the termination directly in
front of an opening into a
building .
For rooftop terminations
A
A
A
Air
intake
Exhaust
termination
B
610 mm
(2 ft .)
A
A
Exhaust
termination
Air
intake
A: In accordance with local codes
For multiple-unit rooftop terminations (whether for standard
or direct-vent installations) space all exhaust and intake
terminations in accordance with local codes . An exhaust
termination must be spaced from a wall or surface in
accordance with local codes as well .
B:
An exhaust termination shall extend not less than 915 mm
(3 ft .) above the highest point where it passes through the
roof of a building AND NOT less than 610 mm (2 ft .) higher
than any portion of a building within a horizontal distance of
3048 mm (10 ft .) . (CSA B149 .1 §8 .14 .4)
