Brochure

TECHNICAL
What is a sone, and how
is it measured? A sone is a
measurement of sound—how
sound is sensed. The lower the
sone value, the quieter the listening
environment. One sone
is the equivalent of a quiet
refrigerator. NuTone fans feature
the quietest rating possible at
<0.3 sones as tested for HVI
certification.
What does “HVI certified” mean?
The Home Ventilating Institute (HVI)
is an independent organization that
certifies the airflow and sound
performance of NuTone products.
For more information visit
www.hvi.org.
What is ENERGY STAR
®
? Refer
to the product matrix for specific
NuTone fans that meet
ENERGY STAR
®
requirements. Many
of these NuTone products use high
efficiency motors and lighting to
reduce energy consumption by as
much as 70%. Learn more about
ENERGY STAR
®
at
www.energystar.gov.
What does CFM mean? Cubic Feet
per Minute (CFM) is 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 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 website www.hvi.org.
What is whole-house ventilation?
Whole-house ventilation provides
today’s airtight homes with a
relatively constant and controlled
lower level of ventilation. NuTone
offers many virtually silent
continuous ventilation solutions
for ASHRAE 62.2 and programs
such as LEED, ENERGY STAR
®
for Homes and CA Title 24.
OPERATION
How do I size a fan properly for my
room size and the duct run? See
the sizing guidelines on page 51 for
details on proper sizing. This section
provides an explanation and
examples to help you make the
right decision.
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 is minimized.
How does Sensing Technology
operate? NuTone has unique
sensing technology that detects
humidity or motion. Multi-speed
models automatically turn the fan
speed up when someone enters the
room or there is a rapid rise in the
humidity level from the lower
continuous CFM level. Single-speed
models turn the fan on automatically.
How does the delay-off timer
operate? Delay-off timers
automatically shut the fan off after
a time interval set by the user.
Why do the windows and mirrors
fog even when the fan is running?
If windows and mirrors are very
cold, condensation can still form
on these surfaces. And if your
bathroom is sealed tightly,
replacement air may not be
entering the room fast enough
to displace the moist air. Fan
placement can also be a factor.
Your fan should be located far
from the replacement air source
to ensure the moist air is drawn
out first. Finally, make sure your
ductwork is as short and straight
as it can be in order to ensure
proper air outflow.
Why is water dripping from the
grille of the fan? Dripping water is
either condensation (usually due to
cold ductwork or improper duct
installation), or a problem with
the seal on a wall or roof vent.
Insulated ductwork can help solve
condensation problems, and running
the fan longer will ensure moisture
is completely removed from the
duct.
Will NuTone fans work in wall-
mount applications? Refer to the
product matrix for specific NuTone
bath and utility fans that may be
wall mounted.
What type of exhaust fan is best for
a sauna or hot tub area? High
CFM-rated devices are normally
recommended for this type of
application.
Can I use a fan in a steam shower?
No. Since these are normally
sealed chambers, a vacuum will
be created.
FAQS FANS & FAN/LIGHTS
48