Nutone QTXEN User Manual download pdf (Page 8)

Everything you need to know about home ventilation.

What is a sone, and how is

it measured?

A sone is a measurement of sound in

terms of comfortable hearing level

for an average listener. The lower

the sone value, the more comfortable

the listening environment. Sones are

not decibels or volume, but rather

how sound is “sensed.” One sone is

the equivalent of a quiet refrigerator.

What does CFM mean?

CFM is the acronym for Cubic Feet

per Minute—the measure of air

volume moved by the fan blower.

Choose a fan with a CFM rating

appropriate for your room size to

ensure adequate ventilation.

What is continuous ventilation?

Continuous ventilation provides today’s

airtight homes with a relatively

constant and controlled lower level of

ventilation. NuTone’s extremely quiet

and efficient Ultra Silent

™

Series is

ideally suited for these applications.

Can I mount NuTone fans above

my tub and shower?

Most NuTone fans are rated for

use over a shower or bathtub with

a GFCI (Ground Fault Circuit

Interrupter).

Can my ceiling fan be surrounded

by insulation?

Yes. NuTone bath fans are designed

to provide adequate cooling for

motors and lighting, as well as

products with integral heaters.

Will NuTone Fans work in

wall-mount applications?

Some NuTone bath and utility fans

may be wall mounted. See the spec

matrix for specific models. Improper

installation may affect fan life,

safety and your warranty.

Will a ceiling fan or wall-mount

utility fan serve as a range hood?

No. Range hoods are specifically

designed to handle grease and high

temperature environments. NuTone

bath fans supplement odor and moisture

removal in the kitchen, but are not

intended for use as a range hood.

What does “static pressure” mean?

Static pressure is the measurement

of airflow resistance as it is pushed

through ductwork which reduces the

effectiveness of the fan. Learn more

on the Home Ventilating Institute

web site www.hvi.org.

How long should a bath fan

run after a shower is used?

The Home Ventilating Institute

recommends that a fan should be

left on for 20 minutes more to clear

humidity adequately and to ensure

moisture and condensation in the

fan body or ducting is minimized.

What should I do if I can’t wait for

moisture to clear, but I don’t want

a fan to run all day long?

NuTone has sensing fans that detect

the humidity rise caused by a shower

and turn on automatically—when

moisture has cleared it turns off.

Some wall controls also give you the

option of humidity sensing, or timer

control. Just set it and forget it.

What are the timer features?

Delay-off timers automatically shut

your fan off after a specified time

interval. It’s a nice feature in high

traffic bathrooms where you may

wish to let the fan run to clear

moisture adequately. A timer counts

down the minutes of fan operation

selected by the user.

Where should the exhaust

fan be located?

Exhaust fans should be located in

or near the shower or tub, and in an

enclosed water closet. Keep exhaust

points opposite the supply air source

to ensure that the fresh air is drawn

through the room. Bathroom doors

should not be sealed too tightly at

the bottom in order to allow “make-

up air” to enter the room when the

door is closed.

How do I size a fan properly for

my room size and the duct run?

See the sizing guidelines on page 7 for

details on proper sizing. This section

provides an explanation and examples

to help you make the right decision.

Where is the exhaust outlet on

the ventilation fan?

The exhaust outlet is the point where

air is discharged through the body

of the fan housing into the ductwork.

During installation, orient your fan

with the exhaust outlet pointing

toward the exit vent on your roof or

wall to minimize turns in ductwork

that impede airflow.

NuTone Ventilation Fans

—

Questions & Facts

Air Quality

NuTone has long been a leader in

indoor air quality solutions. Our spot

ventilation products for bathrooms

and kitchens control problems at the

source. For whole-house filtration and

ventilation, our fresh air systems set

the standard.

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