Electrical Data
Provide disconnect switch in vicinity of fan to permit servicing
fan in accordance with NEC and local codes.
Depending on the desired mode of operation, switches may be
simple on-off switches, motor speed controls, timer switches,
time delay, time-of-day cycle timers, dehumidistats, occupancy
sensing controls, controllers, etc., provided they are rated for
the motor duty and meet the nameplate electrical ratings of
the motor. (Additional application wiring diagrams illustrating
a variety of controls for use with RDF fans are available by
calling the factory at 1-800-255-7749.)
Caution
AUTOMATICALLY OPERATED DEVICE. TO REDUCE RISK
OF INJURY, DISCONNECT FROM THE POWER SUPPLY
BEFORE SERVICING.
Disassembly
Turn off all power to the unit. The blower may be inspected
and cleaned by removing the two screws from the hinged
access panel. The blower assembly can now be swung open
for cleaning the wheel.
Page 3 | RDF Installation Supplement
Base Model
Volts
Max
Amps
Max
Watts
RPM
RDF 8-8IP
115
0.19
20
2324
RDF 8-8MAX
115
0.29
34
3135
RDF 12-8IP
115
0.34
41
2200
RDF 12-8
115
0.53
59
2960
Disclaimer
IT IS THE RESPONSIBILITY OF THE CONTRACTOR/INSTALLER
TO DETERMINE THE SUITABILITY OF THIS EQUIPMENT
WITH RESPECT TO THE POTENTIAL FOR BACKDRAFTING
NATURALLY VENTED FLUE DEVICES AND/OR AFFECTING
RADON ENTRY.
Impact of Exhaust Fans
In especially tight homes heated with naturally vented
appliances, such as gas, oil or wood-fired furnaces, boilers,
stoves or fireplaces, the exhaust system may produce sufficient
negative pressure indoors to induce the backdrafting of flue
gases. This is a common, though intermittent, occurrence, with
conventional exhaust systems, such as vented kitchen range
hoods, clothes dryers, bath fans, etc. In the case of continuous
exhaust, though often at lower flow rates, the potential for
backdrafting the flue of these appliances does exist and
represents a dangerous situation.
The International Fuel Gas Code, Appendix D provides a
Recommended Procedure for Safety Inspection of an Existing
Appliance Installation. This procedure should be followed to
determine the presence of adequate combustion air while all
exhaust fans are operating at maximum speed and all doors
and windows are closed.
In the event that backdrafting occurs, steps must be taken
to provide sufficient combustion air to the furnace or boiler,
following the guidelines of the National Fuel Gas Code and all
state and local codes.
RDF 8-8MAX and RDF 12-8
RDF 8-8IP and RDF 12-8IP
