Bryant 349MAV - Manual (Page 7)

STEPS FOR STARTING YOUR FURNACE
1. Set your room thermostat to the lowest temperature set­
ting. (See Figure 6.)
2. Close the external manual gas valve. (See Figure 7.)
3. Tbrn OFF the electrical supply to the furnace. (See Figure
5. After waiting 5 minutes, turn the control knob on the gas
valve to the ON position. (See Figure 9.)
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7. Open the external manual gas valve. (See Figure 11.)
8. Set the room thermostat to a temperature slightly above
room temperature. This will automatically signal the fur­
nace to start. The inducer motor will start, and the hot sur­
face ignitor will energize. When hot, the ignitor will have
an orange glow.
9. After 30 to 58 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 60 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 doesn’t come on, shut down your furnace and call
your dealer for service.
10. Set your thermostat to the temperature that satisfies your
comfort requirements. SUGGESTION: Setting the ther­
mostat back a few degrees—and compensating for the dif­
ference 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 be switched on
automatically. When the room temperature reaches the
degree selected on the thermostat, the furnace will be au­
tomatically switched off.
Some thermostats have a “fan” switch with two selections:
AUTO or ON. When set on AUTO, the furnace blower cy­
cles on and off, controlled by the thermostat. In the ON
position, the furnace blower runs continuously except for a
60 second delay at the “call for heat.” This keeps the tem­
perature level in your home more evenly balanced. It also
continuously filters the indoor air.
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