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INSTALLATION INSTRUCTIONS
READ & SAVE THESE INSTRUCTIONS!
In-Line Fans
MOUNTING BRACKET
MODELS: ILF120, ILF130, ILF250,
ILF360, ILF 530
IMPORTANT SAFETY INSTRUCTIONS
WARNING: TO REDUCE THE RISK OF FIRE. ELECTRIC
SHOCK, OR INJURY TO PERSONS, OBSERVE THE
FOLLOWING:
A. Use this unit only in the manner intended by the manufacturer. If
you have questions, contact the manufacturer.
B. Before servicing or cleaning unit, switch power off at service
panel and lock service panel 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.
• Suitable for use with solid state speed controls.
CAUTION: For general ventilating use only. Do not use to exhaust
hazardous or explosive materials and vapors.
JOIST OR STUD
INSTALLATION INSTRUCTIONS
WARNING: TO REDUCE THE RISK OF FIRE, ELECTRIC
SHOCK, OR INJURY TO PERSONS, OBSERVE THE
FOLLOWING:
A. Installation work and electrical wiring must be done by qualified
person(s) in accordance with all applicable codes and standards,
including fire-rated construction.
B. Sufficient air is needed for proper combustion and exhausting of
gases through the flue (chimney) of fuel burning equipment to prevent
back drafting. 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.
C. When cutting or drilling into wall or ceiling, do not damage electrical
wiring and other hidden utilities.
D. Ducted fans must always be vented to the outdoors.
E. NEVER place a switch where it can be reached from a tub or shower.
FOR BEST RESULTS
When installing the Ventilator in a new construction site, install
fan and ducting during the rough-in construction of the building. Inlet
grille(s) should be installed after the finished ceiling is in place.
To install a ventilator in an existing building requires access to
the attic area above the space to be ventilated.
INSTALLATION IN A NEW
CONSTRUCTION SITE
MOUNTING
1. Select a mounting site; Identify a mounting location that offers
accessibility with minimal duct run. Mount ventilator as far from
the inlet grille as practical to minimize noise.
NOTE: If used for dryer boosting the ventilator must be mounted at
least 12 feet from the dryer outlet. For gas fired dryers the
ventilator capacity (CFM) must not exceed the dryer’s fan
capacity.
FAN MOUNTING
FIGURE 1
2. Attach fan mounting bracket to the support joist using the wood
screws provided (Refer to Figure 1). For best performance
vertical mounting is recommended, however any orientation is
acceptable.
3. Attach fan to the mounting bracket using the self threading
screws provided (Refer to Figure 1). To ease attachment 1⁄16˝
pilot holes may be used for the mounting screws.
WIRING
1. Run 120v AC house power wiring through switch box to junction
box in ventilator housing.
2. Remove ventilator junction box cover.
3. Refer to Figure 2. Connect the house power wire (black) to the
terminal marked LI. Connect the house neutral wire (white) to the
terminal marked N. The fan housing is fully insulated and therefore
no grounding is required.
4. Replace outlet box cover.
5. Connect house power wire to the wall switch.
NOTE: ALL WIRING MUST COMPLY WITH LOCAL
ELECTRICAL CODES.
DUCTING INSTALLATION
1. Refer to Figure 3. Attach duct to ventilator inlet and outlet using
clamps, fasteners and/or duct tape. Observe the following
recommendations for best results;
A. Always minimize duct lengths and turns.
B. When flexible ducting is used be sure that the duct is fully
stretched and free of kinks or sharp bends.
C. Use insulated ducting when passing through unconditioned spaces.
D. When insulated ducting is used clamp or tape the inner vinyl core to
the inlet and outlet of the fan and tape the vapor barrier surrounding the
duct insulation to the fan housing.
E. Always install a damper at the inlet grilles.
(TO CAPACITOR)
WHITE
(where applicable)
(POWER)
LI
BLACK
(MOTOR)
BLACK
N
(MOTOR)
(NEUTRAL)
BLUE
WHITE
N
W
O
BR
(TO CAPACITOR)
WHITE
(where applicable)
WIRING CONNECTIONS
FIGURE 2
INSTALLATION IN EXISTING CONSTRUCTION
Installing in an existing building requires access to the attic or space
above the planned installation.
Carefully examine the installation area to be sure that;
1. Ducting can be installed.
2. Wiring can be run to the planned location.
3. No wiring or other obstructions might interfere with installation.
Install fan and ducting following the instructions in “Installation in a New
Construction Site”.
FIGURE 3
ROOF OR
WALL CAP
CARE AND MAINTENANCE
1. No regular maintenance is required.
2. For dryer booster applications periodically check the fan and discharge
vent for lint build up. Clean as needed.
Caution: Always disconnect power before inspecting.
AIR FLOW
DAMPERED SLEEVE
CEILING JOIST
INLET GRILLE
DUCTING INSTALLATION
One Year Limited Warranty
WARRANTY OWNER: NuTone warrants to the original consumer purchaser of its products that such products will be free from defects in materials or workmanship for a period
of one (1) year from the date of original purchase. THERE ARE NO OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, IMPLIED
WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
During this one year period, NuTone will, at its option, repair or replace, without charge, any product or part which is found to be defective under normal use and service.
THIS WARRANTY DOES NOT EXTEND TO FLUORESCENT LAMP STARTERS OR TUBES, FILTERS, DUCT, ROOF CAPS, WALL CAPS AND OTHER ACCESSORIES
FOR DUCTING. This warranty does not cover (a) normal maintenance and service or (b) any products or parts which have been subject to misuse, negligence, accident,
improper maintenance or repair (other than by NuTone), faulty installation or installation contrary to recommended installation instructions.
The duration of any implied warranty is limited to the one year period as specified for the express warranty. Some states do not allow limitation on how long an implied warranty
lasts, so the above limitation may not apply to you.
NUTONE’S OBLIGATION TO REPAIR OR REPLACE, AT NUTONE’S OPTION, SHALL BE THE PURCHASER’S SOLE AND EXCLUSIVE REMEDY UNDER THIS
WARRANTY. NUTONE SHALL NOT BE LIABLE FOR INCIDENTAL, CONSEQUENTIAL OR SPECIAL DAMAGES ARISING OUT OF OR IN CONNECTION WITH
PRODUCT USE OR PERFORMANCE. Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may
not apply to you. This warranty gives you specific legal rights, and you may also have other rights, which vary from state to state. This warranty supersedes all prior warranties.
Date of Installation
Builder or Installer

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