Broan QT DC Series - User Manual

1
IMPORTANT - 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.
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 such as those published by the
National Fire Protection Association (NFPA), and the American
Society for Heating, Refrigeration and Air Conditioning Engineers
(ASHRAE), 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. Use only ON/OFF switch, mechanical timer or relay-switched
control.
8. Acceptable for use over a tub or shower when connected to a GFCI
(Ground Fault Circuit Interrupter) - protected branch circuit.
9. This unit must be grounded.
READ AND SAVE THESE INSTRUCTIONS
Cooking
Equipment
Floor
COOKING AREA
Do not install above or
inside this area.
45
o
45
o
NOT FOR USE IN
A COOKING AREA.
CAUTION
1. For general ventilating use only. Do not use to exhaust hazardous
or explosive materials and vapors.
2. This product can be installed in a wall if mounted 8-ft. or more
above the floor.
3. To avoid motor bearing damage and noisy and/or unbalanced
impellers, keep drywall spray, construction dust, etc. off power
unit.
4. Please read specification label on product for further information
and requirements.
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
blower assembly (includes motor and impeller).
OPERATION
Use an on/off switch to operate the fan.
Do not use a speed control.
QT DC Series Fan
For Warranty Statement, Service Parts, Technical Support, or to
Register your product, please visit our website or call:
In the United States - Broan.com 800-637-1453 or NuTone.com
888-336-6151. In Canada - Broan.ca or NuTone.ca 877-896-1119
ROOF CAP*
(with built-in
damper)
WALL CAP*
(with built-in
damper)
6-IN. ROUND
ELBOWS*
6-IN. ROUND
DUCT*
FAN
HOUSING
Seal gaps
around
housing.
Seal duct
joints with
tape.
Keep duct
runs short.
INSULATION
(Place around and
over fan housing.)
POWER
CABLE*
*Purchase
separately.
OR

Summary

General Safety Warnings

Intended Use and Servicing Safety

Use unit as intended; switch off power before servicing and lock out.

Installation and Venting Safety

Qualified installation, fire codes, and proper combustion venting are essential.

Electrical and Grounding Safety

Avoid electrical damage, use specific controls, and ensure unit is grounded.

Usage Over Water and GFCI Protection

Acceptable over tub/shower only when GFCI protected.

Outdoor Venting Requirement

Ducted fans must always be vented to the outdoors.

Cautionary Notes

Ventilation Use Restrictions

For general ventilating use only; do not exhaust hazardous or explosive materials.

Wall Installation Height

Product can be installed in a wall if mounted 8-ft. or more above the floor.

Motor Protection

Keep drywall spray and dust off the power unit to avoid motor damage.

Refer to Specification Label

Please read the product specification label for further information and requirements.

Cleaning and Maintenance

Cleaning Procedure

Lower grille, vacuum interior with dusting brush attachment for quiet operation.

Motor Lubrication

Motor is permanently lubricated; replace blower assembly if bearings make noise.

Operation

Fan Control

Use an on/off switch to operate the fan. Do not use a speed control.

Typical Installations

Housing Mounted to I-Joists

Illustrates housing mounted to I-joists, using an I-joist spacer block.

Housing Mounted Between Joists

Shows housing mounted between joists using hanger bars.

Housing Mounted to Joists

Depicts housing mounted to standard joists.

Housing Mounted to Truss

Illustrates housing mounted to a truss.

Housing Mounted Between Trusses

Shows housing mounted anywhere between trusses using hanger bars.

Installation Steps

Model CFM Selection

Select 110, 130, or 150 CFM based on room size and desired airflow.

Mount Housing to Joist

Secure housing to joist with screws or nails, using spacers for I-joists.

Mount Housing with Hanger Bars

Mount housing between framing members using adjustable hanger bars.

Attach Damper;Duct Connector

Attach the damper/duct connector to the housing using screws.

Install 6-inch Round Ductwork

Connect ductwork to connector, run to cap, and seal connections for airtightness.

Connect Wiring

Attach cable clamp, connect power and house wiring using approved connectors.

Install Housing Mask

Tape mask into housing to protect unit during construction, remove before grille.

Attach Grille

Attach the grille to the housing. Ensure grille springs are properly seated.

Wiring Diagrams

Unit Wiring Diagram

Illustrates wiring connections for the fan unit with an ON/OFF switch.

Receptacle Wiring Diagram

Shows wiring for connecting the fan to a receptacle via a switch box.

Broan QT DC Series Specifications

General

Brand	Broan
Model	QT DC Series
Category	Fan
Language	English