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MODEL QTNLEDB
TYPICAL INSTALLATIONS
Housing mounted to I-joists.
Housing mounted anywhere be-
tween trusses using hanger bars.
PLAN THE INSTALLATION
Housing mounted anywhere be-
tween I-joists using hanger bars.
Housing mounted to joists.
Housing mounted anywhere be-
tween joists using hanger bars.
Housing mounted anywhere between
trusses using hanger bars.
Cooking
Equipment
Floor
COOKING AREA
Do not install above or
inside this area.
45
o
45
o
NOT FOR USE IN
A COOKING AREA.
The ducting from this fan to the outside of the building has
a strong effect on the air flow, noise and energy use of the
fan. Use the shortest, straightest duct routing possible for
best performance, and avoid installing the fan with smaller
ducts than recommended. Insulation around the ducts can
reduce energy loss and inhibit mold growth. Fans installed
with existing ducts may not achieve their rated airflow.
6-inch round rigid metal duct is recommended for best
performance.
Use a roof cap or wall cap that has a built-in damper to
reduce backdrafts.
Plan to supply the unit with proper line voltage and
appropriate power cable.
INSTALL HOUSING & DUCT
1a. Mount
housing
to joist or
I
-joist.
Use a pliers to
bend housing
TABS
out
to 90
0
. Hold
housing in
place so that
the housing
tabs contact
the bottom
of the joist.
The housing
mounts with
four (4) screws
or nails. Screw
or nail housing
to joist through
lowest holes in
each mounting
flange, then
through
highest holes.
SPACER
(use for mounting to I-Joist)
I
-JOIST
NOTE: Mounting to
I
-JOIST
(shown) requires use of
SPACERS
(included) between the highest hole of
each mounting flange and the
I
-joist.
OR
*Purchase
separately.
INSULATION*
(Place around and
over Fan Housing.)
ROOF CAP*
(with built-in
damper)
FAN
HOUSING
POWER
CABLE*
ROUND
DUCT*
ROUND
ELBOWS*
Seal gaps
around
Housing.
Seal duct
joints with
tape.
OR
Keep duct
runs short.
WALL CAP*
(with built-in
damper)
TABS
