Shutting Down Your Furnace - Payne 480BAV Upflow User's Information Manual

11. After 15 to 70 sec, 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 45 sec, the fur-
nace blower is switched on.
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NOTE: If the main burners fail to ig-
nite, the furnace control system will go
through 3 more ignition cycles. Then,
if burners fail to ignite, the system will
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lockout. If lockout occurs, or the
blower does not come on—shut down
your furnace and call your dealer for
service.
12. Set your thermostat to the temper-
ature that satisfies your comfort
requirements. SUGGESTION:
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Setting the thermostat back a few
degrees—and compensating for
the difference with warmer cloth-
ing—can make a big difference in
your fuel consumption on
extremely cold days. The few
degrees at the top of your thermo-
stat "comfort level" are the most
costly degrees to obtain.
When the room temperature drops be-
low the temperature selected on the
thermostat, the furnace will be auto-
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matically switched on. When the room
temperature reaches the degree se-
lected on the thermostat, the furnace
will be automatically switched off.
Some thermostats have a "fan" mode
with 2 selections: AUTO or ON. When
set on AUTO, the furnace blower cy-
cles on and off, controlled by the ther-
mostat. In the ON position, the
furnace blower runs continuously ex-
cept for a 45-sec delay at the "call for
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heat." This 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 proce-
dures must be followed:
1. Set your room thermostat to the
lowest temperature setting. (See
Fig. 20.)
2. Close the external manual gas
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valve. (See Fig. 8 on page 4.)
3. Turn OFF the electrical supply to
your furnace. (See Fig. 21.)
4. Remove the control access door on
your furnace. (See Fig. 10 or 11.)
On upflow furnaces, removing the
blower access door is not required.
5. Turn the control knob or switch on
the gas valve to the OFF position.
(See Fig. 22 or 23.)
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