NuTone QT-9093 User Manual

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INSTALLATION INSTRUCTIONS

Heat-A-Ventlite®

MODELS: QT-9093 SERIES

SCREWS

 

HEATER

IMPORTANT: DO NOT MOUNT OVER TUB

OR IN SHOWER STALL ENCLOSURE.

PRECAUTIONS

Observe all requirements in this instruction sheet and all markings appearing on the unit.

Check all operations of the unit after installation has been completed.

The heater housing must be grounded and the wiring must comply with all local electrical codes.

The flange of the rough-in housing MUST be flush with the finished

 

 

plaster or drywall surface to assure proper and absolutely safe operation.

 

 

If plaster material, paint base or paint is sprayed on the walls or ceiling,

 

 

the inside of the housing must be masked off to prevent this material

 

 

from entering the housing.

 

HEATER

 

The switch (furnished) must be wired in accordance with the

 

SCREWS

FIGURE 1

wiring diagram.

 

 

 

For installation in sloped ceilings up to 12/12 pitch.

 

 

Ductwork must point up.

 

13" DIA.

 

 

 

 

PREPARATION

 

 

 

Refer to Figure 1.

 

 

 

1. Loosen two screws holding grille in place. Remove grille and set aside. Remove housing,

 

 

switch assembly, hanger bar and mounting brackets from carton.

 

 

2. Loosen four (4) screws holding heater power unit in place. Remove heater power unit and

 

 

set aside.

 

 

 

MOUNTING TO OPEN JOISTS IN NEW CONSTRUCTION

 

 

1. Install hanger brackets in keyhole slots in housing. Insert hanger bar through bracket opposite

 

 

blower vent.

 

 

 

2. Refer to Figure 2. Position housing between joists with exhaust vent in desired direction.

 

 

 

Secure side hanger brackets and ends of

 

 

 

adjustable hanger bar to joists with screws or nails.

14" DIA.

 

 

If joist spacing is greater than 16" O.C., construct

FIGURE 2

 

framing to support sides of housing,

 

 

 

 

 

(Refer to Figure 3). Position housing against joists

 

 

 

and secure with wood screws through keyhole

 

 

 

slots in housing.

 

 

 

3. Loosen screws securing hanger brackets to

 

 

 

housing and adjust height of housing so that

 

 

 

bottom flange will be flush with finished ceiling.

 

 

 

Tighten screws securely.

 

 

 

4. Attach 4" round duct and run ductwork to the

 

FIGURE 3

 

outside through wall or roof.

 

 

 

 

 

WIRING

 

 

 

115-120 volts (20 amp circuit only), 12 gauge wire.

 

 

 

1. Remove desired knockout from junction box and install a box connector (not provided).

 

2. Refer to Figure 4. Run 120vAC supply wiring to wall switch box. Run wiring from wall switch box to

 

heater. Five conductors plus ground are required for independent operation of all functions.

 

3. When a thermostat or timer switch is used, connect at point marked “T” on Figure 4.

 

4. Make wiring connections using wire nuts. Connect ground wire under ground screw in junction box.

FIGURE 4

5. Push wiring back into junction box and install junction box cover being careful not to pinch wiring

between cover and housing. Secure cover.

 

 

COMPLETING INSTALLATION

 

 

 

 

 

 

 

 

7-5/8"

 

 

 

 

 

 

 

 

 

 

 

 

1.

Reinstall the heater unit and tighten four (4) screws securely.

2-1/2"

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2.

Plug fan and heater assemblies to receptacles on junction box cover.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3.

Install a 100 watt lamp in light socket and 7 watt lamp in night light socket.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4.

Place grille over grille mounting screws and tighten.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5.

Check out all functions for proper operation.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

INSTALLATION IN EXISTING CONSTRUCTION

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Refer to Figure 5.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NOTE: In existing construction, hanger bar and mounting brackets are not used.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1.

Determine desired location of heater. Area above heater must be free of plumbing

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

and electrical wiring. There must be enough clearance above ceiling for heater

 

 

 

 

 

 

 

 

 

 

5-1/2"

 

 

 

housing and installation of duct and wiring.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2.

Drill a small hole up through ceiling and insert a wire or nail to help in locating from

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

above.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3.

Locate hole from above. Center heater housing between joists and use the bottom

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

flange of housing as a template to mark cutout. Cut out hole in ceiling.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4.

Refer to Figure 3. Secure short pieces of 1" x 3" lumber (34" nominal) to joists on

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

either side of opening. Leave approximately 12" between top of ceiling so that flange of

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

heater housing can slide under spacers. If joist spacing is greater than 16" O.C., cut

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

spacers of 2" x 4" lumber to fit between housing and joists.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5.

Place heater over opening and between spacers. From below, align housing so flange

 

 

 

 

 

 

 

 

 

 

 

FIGURE 5

 

is flush with finished ceiling. Secure to spacers with nails or wood screws though

 

 

 

 

 

 

 

 

 

 

 

 

keyhole slots. NOTE: If necessary, housing can be installed from below by removing

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

vent blower, vent housing, and outlet box.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

6.

Install 4" duct and refer to previous section of these instructions for Wiring and Completing Installation.

 

4820 Red Bank Road, Cincinnati, OH 45227

Product specifications subject to change without notice.

Printed in U.S.A., Rev. 04/05, Part No. 85917