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INSTALLATION INSTRUCTIONS
READ & SAVE THESE INSTRUCTIONS!
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.
CAUTION:
For general ventilating use only. Do not use to
exhaust hazardous or explosive materials and vapors.
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. If this unit is to be installed over a tub or shower, it must
be marked as appropriate for the application.
F. NEVER place a switch where it can be reached from
a tub or shower.
For use on inside walls which are 3
1
⁄
2
" to 6" thick.
The telescoping sleeve is adjusted to wall thickness
by removing knockouts.
• WARNING: To reduce risk of fire or electrical shock,
this fan should not be used with an additional speed
control.
• WARNING: To reduce the risk of shock, disconnect
power before servicing.
• Do not mount over tub or in shower stall enclosure.
To move heated air from one room to another, NuTone
recommends installing the Room-to-Room Fan within six
inches of the ceiling. Installing the fan at this height will
provided more efficient movement of heated air from room
to room.
If the fan is intended to move cooled air from room
to room, install the fan as close as possible to the floor.
Room-to-Room Fan
MODEL: 8145
NEW CONSTRUCTION
ADJUSTING AND MOUNTING FAN SLEEVE
1. Remove four (4) screws to separate outer sleeve
from inner sleeve.
2. The outer sleeve is the discharge side of the fan; make
sure the on/off switch is in the room into which air will
be blown.
3. Insert extension bracket in top of outer sleeve.
4. Refer to Figure 1. Loosen two screws and remove
fan and motor assembly from adjustable inner sleeve.
5. Adjust to wall thickness by removing knockouts in bottom
of adjustable sleeve. Refer to chart.
6. When adjusting sleeve, make sure both flanges will
be flush with finished walls.
7. When adjustment is complete, screw sleeves together
with four (4) screws.
8. Center and mount completed sleeve assembly to a wall
stud. Nail or screw sleeve to wall stud through holes in
the side of the sleeve.
9. Refer to Figure 2. Extend bracket to opposite wall stud
and secure it with nails or screws.
Wall Thickness
6"
5" – 5
1
⁄
2
"
4
1
⁄
2
"–5"
4" – 4
1
⁄
2
"
3
1
⁄
2
"–4"
0
1
2
3
4
Remove Knockouts
FIGURE 1
AIR FLOW
ON/OFF SWITCH
OUTER
SLEEVE
KNOCKOUTS
INNER
SLEEVE
FAN AND
MOTOR
ASSEMBLY
EXTENSION
BRACKET