NuTone Power Attic Ventilator RF-49 Series - Manual

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INSTALLATION INSTRUCTIONS
Power Attic Ventilator
MODEL: RF-49 Series
BLACK LEAD
FROM MOTOR
HOUSE SUPPLY
WIRING
BLACK LEAD FROM
HOUSE SUPPLY
WHITE LEADS
FROM MOTOR
AND HOUSE
SUPPLY
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.
CAUTION:
This unit has an unguarded impeller. Do not use in locations
readily accessible to people or animals.
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.
IMPORTANT: For every 300 CFM of fan performance, a minimum
of one square foot of inlet space in attic or crawl space is
necessary for proper operation. Inlet areas should be located as far
from fan location as possible, such as in the eave or side walls.
MOUNTING THE FAN
IMPORTANT: If the fan will be mounted on a flat roof, make a curb
on which to mount the fan; the fan must be above the level of the
roof’s water line.
FAN MOTOR
WIRING
FLEXIBLE CONDUIT
SERVES AS GROUND
SUPPLY
GROUND
1. Determine the location of the fan. Place the unit on top of the
shingles as close to the center of the roof as possible and near the
ridgeline. For best appearance, the unit should be mounted on the
back side of the house and should be visible only on one side of
the roof. This will require that the unit be moved down slightly from
the ridgeline.
2. When the desired location is established, locate a center line
between two rafters and drill a small hole through the roof from the
inside. This hole will be used as a center for the following
operations.
3. Draw a reference square on 25 3 ⁄
8
" by 25 3 ⁄
8
" on the roof using the
drilled hole as a center. Within the square, draw a 17 3 ⁄
8
" diameter
circle. Cut and remove the shingles, nails and felt within this circle.
Draw and cut a 14
7 ⁄
8
" diameter hole through the decking.
4. With the lettering of the unit parallel to the ridgeline, slide the top
flange of the unit up under the shingles (some roofing nails may
need to be removed). Position the unit on the reference square
previously drawn to align the exhaust openings. With the unit
located, apply a generous amount of roofing compound between
the flange and shingles approximately 1" in from perimeter of
flange. Secure with galvanized roofing nails. Follow the nailing
pattern shown.
MOUNTING THE THERMOSTAT/
OUTLET BOX
IMPORTANT: Do not mount outlet box near heat source.
1. Mount the outlet box to a nearby rafter so that the outlet box is
higher that the fan motor.