Owners Manual

5
Specifications subject to change without notice.
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Figure 9 − Control Switch to ON
ON
OFF
OR
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8. Replace the outer door by placing flange inside casing,
push door firmly against casing and turn knobs
counterclockwise to tighten.
Figure 10 − Furnace Door Replaced
LOCK
LOCK
9. Turn ON the electrical supply to the furnace.
Figure 11 − Turn On Electrical Supply
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10. Open the external manual gas valve.
Figure 12 − Open Valve
O
P
E
N
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11. Set the room thermostat to a temperature slightly above
the room temperature. This will automatically signal the
furnace to start. The inducer motor will start and the hot
surface igniter will energize. When hot, the igniter will
have an orange glow.
12. After about 17 seconds, the gas valve permits gas to flow
to the main burners where it is ignited. Hot flames begin
to warm the furnace’s heat exchanger. After a time delay
of approximately 25−45 seconds the furnace blower is
switched on.
NOTE: If the main burners fail to ignite, the furnace control
system will go through three more ignition cycles. Then if
burners fail to ignite, the system will lockout. If lockout occurs or
the blower does not come on, shut down your furnace and call
your dealer for service.
13. Set your thermostat to the temperature that satisfies your
comfort requirements. SUGGESTION: Setting the
thermostat back a few degrees—and compensating for
the difference with warmer clothing—can make a big
difference in your fuel consumption on extremely cold
days. The few degrees at the top of your thermostat
“comfort level” are the most costly degrees to obtain.
When the room temperature drops below the temperature
selected on the thermostat, the furnace will switch on
automatically. When the room temperature reaches the setting
selected on the thermostat, the furnace will be automatically
switched off.
Continuous Fan Operation −Some thermostats have a
“FAN” switch with two selections: AUTO and ON. When
thermostat is set on AUTO, the furnace blower cycles on and
off, controlled by the thermostat. In ON position, the furnace
blower runs continuously except for a 42−62 sec delay at the
“call for heat.” Continuous fan keeps the temperature level in
your home more evenly balanced. It also continuously filters
the indoor air.
SHUTTING DOWN YOUR FURNACE
Should you ever suspect a malfunction in your furnace, you
will need to turn the furnace off. The following procedures
must be followed:
1. Set your room thermostat to the lowest temperature
setting. (See Figure 4)
2. Close the external manual gas valve (See Figure 5).
3. Turn off electrical supply to the furnace. (See Figure 6)
4. Remove outer furnace door. (See Figure 7)
5. Turn the switch on the gas control to the OFF position.
(See Figure 8)
6. Replace the outer furnace door. (See Figure 9)
7. If the furnace is being shut down because of a
malfunction, call your dealer as soon as possible.
PERFORMING ROUTINE MAINTENANCE
With proper maintenance and care, your furnace will operate
economically and dependably. Instructions for basic
maintenance are found on this and the following pages.
However, before beginning maintenance, follow these safety
precautions:
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in
personal injury or death.
Turn off electrical power supply to your furnace
before removing the access doors to service or
perform maintenance.
!
WARNING