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21
MODEL F80A
I
NDUCED BLOWER
The induced blower motor should be inspected and cleaned
i
f necessary. Clear any dust buildup from the ventilation
ports.
CIRCULATING FAN
The condition of the circulating fan should be checked to
ensure that it is free of excessive dust buildup, debris, etc.
The mechanical fasteners should be inspected and checked
for proper tightness and parts alignment. The motor
v
entilation ports should be cleaned if necessary to prevent
restriction to cooling by air over the motor.
ELECTRICAL
WARNING
DISCONNECT THE ELECTRICAL POWER SUPPLY TO THE
FURNACE BEFORE ATTEMPTING THIS MAINTENANCE
PROCEDURE. FAILURE TO DO SO CAN CAUSE
ELECTRICAL SHOCK RESULTING IN PERSONAL INJURY OR
LOSS OF LIFE.
All electrical connections should be examined to ensure that
they are tight and corrosion free. Repair any connections
that have become loose or corroded.
FURNACE OPERATION
The furnace should be cycled during the annual inspection
and servicing to:
1. Test all safety related controls.
2. Determine that the temperature rise falls within the
range shown on the appliance rating plate.
3. Ensure that the burner ignition is smooth and that the
flames are smooth soft blue, and not impinging on the
heat exchanger
.
CAUTION
Label all wires prior to disconnection when servicing
controls. Wiring errors can cause improper and
dangerous operation.
Always verify proper operation after servicing.
A
CCESSORIES
FIELD SUPPLIED AND INSTALLED OPTIONAL
ACCESSORIES
ELECTRONIC AIR CLEANER
T
he White-Rodgers integrated furnace control has
provisions to supply power and control an electronic air
cleaner rated at 120vac, 1.0 amp max.
5
0A55-250: Line voltage for an electronic air cleaner may be
picked up from the "EAC-N". 120 volt power will be
available at these terminals whenever the circulating fan is
operating in the heating or cooling modes.
HUMIDIFIER/ ELECTRONIC AIR CLEANERS
The White-Rodgers integrated furnace control has
provisions to supply power and to control a line voltage
humidifier or the primary of a 120 / 24 volt humidifier step
down transformer, rated at 120vac, 1.0 amp max.
50A55-250: Line voltage for a humidifier may be picked up
from the "HUM-H" terminal and from the "HUM-N"
terminal. 120 volt power will be available at these terminals
whenever the circulating fan is operating in the heating
mode.
NOTE: All HUM (humidifier) and EAC (electronic air
cleaner) terminals are 120v. Do not directly connect
24v equipment to them.
NOTE: All furnace and furnace accessory wiring shall
conform to the temperature limitations of 63°F (35°C)
rise.