Page 2
MODELS QTXE110S • QTXE110S2
TYPICAL INSTALLATIONS
Housing mounted to
I-joists.
Housing mounted anywhere
between trusses using hanger
bars.
PLAN THE INSTALLATION
1. Choose the
installation
location.
The location of
your humidity
sensing fan is
very important.
Use the follow-
ing guidelines
for best opera-
tion:
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 be-
tween trusses using hanger bars.
INSTALL HOUSING &
DUCT
1a. Mount
housing
to joist
or I-joist.
Use a pliers to
bend housing
TABS
out to
90
0
. Hold hous-
ing in place so
that the hous-
ing tabs con-
tact 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 mount-
i n g f l a n g e ,
then through
highest holes.
SPACER
(use for mounting to I-Joist)
TABS
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
• Locate unit above (GFCI protected circuit required) or
within 5 feet of shower head.
• Locate unit away from heating or cooling sources
which can affect humidity levels.
• Do not locate near window. Unit may respond to the
outdoor humidity level.
• Unit must be installed in ceiling to properly sense
moisture.
• Locate unit only on flat ceilings up to 12 feet high for
proper sensing.
• 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 rout-
ing possible for best performance, and avoid installing
the fan with smaller ducts than recommended. Insula-
tion around the ducts can reduce energy loss and
inhibit mold growth. Fans installed with existing ducts
may not achieve their rated airflow.
2. Plan the wiring.
• Plan to supply the unit with proper line voltage and
appropriate power cable. Power cable should be
routed to the switch box first and then to the unit
(See “CONNECT WIRING” on page 3).
• Do not operate this unit with a speed control.
Damage to the sensor unit will result.
*Purchase
separately.
INSULATION*
(Place around and
over Fan Housing.)
ROOF CAP*
(with built-in
damper)
FAN
HOUSING
POWER
CABLE*
6-IN. ROUND
DUCT*
6-IN.
ROUND
ELBOWS*
Seal gaps
around
Housing.
Seal duct
joints with
tape.
OR
Keep duct
runs short.
WALL CAP*
(with built-in
damper)
