NuTone QTXEN050C, ULTRA SILENT QTXEN, QTXEN090C, QTXEN110C, QTXEN150C Instructions Manual
MODELS QTXEN050C • QTXEN090C • QTXEN110C • QTXEN150C
QTXEN SERIES
Page 1
ULTRA SILENT
TM
VENTILATION FAN
READ AND SAVE THESE INSTRUCTIONS
WARNING
TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK, OR INJURY TO
PERSONS, OBSERVE THE FOLLOWING:
1. Use this unit only in the manner intended by the manufacturer. If you
have questions, contact the manufacturer at the address or telephone
number listed in the warranty.
2. Before servicing or cleaning unit, switch power off at service panel
and lock the service disconnecting means to prevent power from
being switched on accidentally. When the service disconnecting
means cannot be locked, securely fasten a prominent warning device,
such as a tag, to the service panel.
3. Installation work and electrical wiring must be done by a qualified
person(s) in accordance with all applicable codes and standards,
including fire-rated construction codes and standards.
4. Sufficient air is needed for proper combustion and exhausting of
gases through the flue (chimney) of fuel burning equipment to prevent
backdrafting. Follow the heating equipment manufacturer’s guideline
and safety standards, and the local code authorities.
5. When cutting or drilling into wall or ceiling, do not damage electrical
wiring and other hidden utilities.
6. Ducted fans must always be vented to the outdoors.
7. Acceptable for use over a tub or shower when connected to a GFCI
(Ground Fault Circuit Interrupter) - protected branch circuit (ceiling
installation only).
8. This unit must be grounded.
TYPICAL INSTALLATIONS
Housing mounted to I-joists.
Use I-joist spacer block (provided).
CAUTION
1. For general ventilating use only. Do not use to exhaust hazardous or
explosive materials and vapors.
2. To avoid motor bearing damage and noisy and/or unbalanced blower
wheels, keep drywall spray, construction dust, etc. off power unit.
3. Please read specification label on product for further information
and requirements.
!
Housing mounted to joists.
OPERATION
Use an on/off switch or speed control to operate this ventilator. See
“Connect Wiring” for details.
Housing mounted to truss.
INSTALLER: Leave this manual with the homeowner • HOMEOWNER: Cleaning and Maintenance on page 3
MODELS QTXEN050C • QTXEN090C • QTXEN110C • QTXEN150C
Page 2
PLAN THE INSTALLATION
ROOF CAP
6-IN. (152.4 mm)
ROUND
DUCT
*
6-IN. (152.4 mm)
ELBOW
Purchase separately
*
The unit will operate most quietly and efficiently when located where
the shortest possible duct run and minimum number of elbows will be
needed.
Plan to supply the unit with proper line voltage and appropriate power
cable.
*
*
WALL
CAP
*
INSTALL HOUSING & DUCT
1. Bend
housing tabs.
Use pliers to bend
housing TABS out
to 900.
TABS
2. Mount
housing to
(use for mounting to I-Joist)
joist.
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. NOTE: Mounting to I-JOIST (shown) requires use
of SPACERS (included) between the highest hole of each
mounting flange and the I-joist.
SPACER
I-JOIST
3. Attach
damper / duct
connector.
Snap damper / duct
connector onto
housing. Make sure
connector is flush
with top of housing
and damper flap
falls closed.
4. Install 6-inch
(152.4 mm)
round
ductwork.
Connect 6-inch
(152.4 mm) round
ductwork to
damper / duct
connector. Run
ductwork to a roof
cap or wall cap.
Tape all ductwork
connections to
make them secure and air tight.
MODELS QTXEN050C • QTXEN090C • QTXEN110C • QTXEN150C
Page 3
CONNECT WIRING
INSTALL GRILLE
6. Finish ceiling.
Install ceiling material. Cut out around housing.
7. Attach grille to
housing.
Squeeze grille
springs and insert
them into slots on
each side of
housing.
8. Push grille
against
ceiling.
5. Connect electrical wiring.
Run 120 VAC house wiring to installation location. Use proper UL
approved connector to secure house wiring to wiring plate.
Connect wires as shown in wiring diagrams.
CLEANING & MAINTENANCE
For quiet and efficient operation, long life, and attractive appearance lower or remove grille and vacuum interior of unit with the dusting brush
attachment.
The motor is permanently lubricated and never needs oiling. If the motor
bearings are making excessive or unusual noises, replace the motor
with the exact service motor. The blower wheel should also be replaced.
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