Nutone QTXN110SL - Manual

Page

MODEL QTXN110SL

WARNING

TO REDUCE THE RISK OF FIRE, ELECTRIC

SHOCK, OR INJURY TO PERSONS, OB-

SERVE 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 ser-

vice 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 pre

-

vent backdrafting. Follow the heating equip-

ment manufacturer’s guideline and safety

standards such as those published by the

National Fire Protection Association (NFPA),

and the American Society for Heating, Re-

frigeration 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. Acceptable for use over a tub or shower when

connected to a GFCI (Ground Fault Circuit

Interrupter) - protected branch circuit.

8. This unit must be grounded.

CAUTION

1. For general ventilating use only. Do not use

to exhaust hazardous or explosive materials

and vapors.

2. This product is designed for installation in

flat ceilings only. DO NOT MOUNT THIS

PRODUCT IN A WALL.

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.

HUMIDITY SENSING

FAN / LIGHT / NIGHT LIGHT

READ AND SAVE THESE INSTRUCTIONS

CLEANING &

MAINTENANCE

Installer: Leave this manual

with the homeowner.

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

impeller should also be replaced.

SENSOR CLEANING

The humidity sensor is mounted in the grille.

The sensor will operate most reliably when

cleaned occasionally as follows:

1. Disconnect power at service entrance.

2. Remove the grille. Use a dry dustcloth,

clean toothbrush, or lightly vacuum to

clean sensor and grille. DO NOT USE

ABRASIVE CLOTH, STEEL WOOL

PADS, OR SCOURING POWDERS.

3. DO NOT USE cleaning sprays, solvents,

or water on or near the sensor!

OPERATION

To register this product visit:

www.nutone.com

The humidity control and fan can be

oper-ated separately. Use a 1- or 2-func-

tion wall control. Do not use a dimmer

switch to operate the humidity control or

light. See “Connect Wiring” for details.
SENSOR OPERATION

This humidity-sensing

fan responds to:

(a) rapid to moderate humidity increases

and (b) humidity above a 50%-100% rela

-

tive humidity set-point. (a) and (b) are set

with “SENSITIVITY” adjustment. Fan may

occasionally turn on when environ-mental

conditions change. If the fan contin-uously

responds to changing environ-mental condi-

tions, “SENSITIVITY” adjust-ment may be

required (see section below).

STATUS INDICATOR

This indicator can only be seen by looking

directly at it. Normal mode is 5-seconds on

and off. If it blinks rapidly for 5-seconds and

then off, check sensor connections on grille

and fan housing.

MANUAL ON WITH TIMED OFF

For odor or vapor control, the fan can be en-

ergized by cycling its wall-mounted switch

if one is installed. Once the fan has been

turned on in this manner, it will remain on

for the set “TIMER” period.

To manually energize the fan:

1. Go to Step 2 if switch is already on;

otherwise, turn switch on for more than

1 second.

2. Switch off for less than 1 second.

3. Switch back on and fan will turn on.

SENSITIVITY ADJUSTMENT

“SENSITIVITY” has been factory set for

most shower applications. If the fan is in a

tub area or is used for dampness control,

the “SENSITIVITY” may need to be in-

creased toward maximum (“MAX.”). If the

control is responding too often to changing

environmental conditions, adjustment to-

ward less (“MIN.”) “SENSITIVITY” may be

required. To adjust the “SENSITIVITY”:

1. Turn power off at electrical service

panel.

2. T h r o u g h t h e g r i l l e , l o c a t e t h e

“SENSITIVITY” screwdriver slot.

3. Using a small, flat-blade screwdriver,

carefully rotate “SENSITIVITY” adjust-

ment toward “MAX.” or “MIN.”

4. Turn power on and check operation

by turning on shower or other humidity

source until fan turns on.

5. Repeat above steps if necessary.

TIMER ADJUSTMENT

This humidity-sensing fan has a “TIMER”. It

is user-adjustable from 5 to 60 minutes and

is factory-set at 20 minutes. The “TIMER”

controls how long the fan remains on (a)

after rise in humidity and (b) humidity level

are both below the user-adjustable “SEN-

SITIVITY” setting or after being energized

by cycling power switch.

To adjust the “TIMER”:

1. Disconnect power at electrical service

panel.

2. Through the grille, locate the “TIMER”

screwdriver slot.

3. Using a small, flat-blade screwdriver,

carefully rotate “TIMER” adjustment to

desired setting (5 to 60 minutes).

4. Check operation by cycling power

switch as instructed under “MANUAL

ON WITH TIMED OFF” or by turning on

a humidity source until fan turns on.

5. Check “TIMER” setting with watch or

clock after turning humidity source off

if it was turned on it Step 4.

6. Repeat above steps if necessary.