John Wood Takagi - 910 - Manual (Page 33)

33
Additional clearances
Follow all local and national codes in regards to proper ter-
mination clearances. In the absence of such codes, the fol-
lowing clearances can be used as guidelines. Local codes
supersede these guidelines.
For sidewall terminations
Inside
corner
Exhaust
termination
610mm
(2 ft.)
305mm
(1 ft.)
305mm
(1 ft.)
Inside
corner
610mm
(2ft.) 305mm
(1 ft.)
305mm
(1 ft.)
Direct vent
termination
For multiple sidewall
exhaust terminations (e.g.
multi-unit systems), an
exhaust termination must
be at least 305mm (1 ft.)
away from another exhaust
termination. An exhaust ter-
mination must also be at
least 610mm (2 ft.) away
from an inside corner (if the
adjacent wall is less than
610mm (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-unit, direct-
vent sidewall terminations
that combine the intake
and exhaust into a single
penetration, space each
direct-vent termination at
least 305mm (1 ft.) away
from each other, no matter
the orientation. A direct-vent
termination must also be at
least 610mm (2 ft.) away
from an inside corner (if the
adjacent wall is less than
610mm (2 ft.) of length, the
minimum required distance
away from the inside corner
will be equal to the length of
that adjacent wall).
915mm
(3 ft.)
915mm
(3 ft.)
915mm
(3 ft.)
Air supply inlet
Exhaust
termination
2 ft.
For direct-vent sidewall ter-
minations that use two sep-
arate penetrations for the
intake and exhaust, distance
the intake and exhaust ter-
minations at least 915mm
(3 ft.) away from each other,
no matter the orientation. Exhaust and/or direct-vent
sidewall terminations should
be at least 610mm (2 ft.)
away from an opposite sur-
face/wall. Do not place the
termination directly in front
of an opening into a build-
ing.
For rooftop terminations
A
A
A
Air
intake
Exhaust
termination
610mm
(2 ft.)
A
A
Exhaust
termination
Air
intake
A: In accordance with local codes
For multiple-unit rooftop terminations (whether for stan-
dard 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. In the absence of
such a code, an exhaust termination must be a horizontal
distance of at least 610mm (2 ft.) away from a wall or
surface.