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4. Turn the switch on the gas valve to the OFF position and wait 5 minutes. (See Fig. 8.)
5. After waiting 5 minutes, turn the switch on the gas valve to the ON position. (See Fig. 9.)
6. Turn on the electrical supply to the furnace. (See Fig. 10.)
7. Open the external manual gas valve. (See Fig. 11.)
8. Set the room thermostat to a temperature slightly above room temperature. (See Fig. 12.) This will automatically signal the furnace to
start. The inducer motor will start, the pressure switch will close, and the hot surface igniter will be energized.
9. The hot surface igniter will light the pilot flame. Once the pilot flame is sensed, 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 30 sec, the furnace blower is switched on.
If the pilot fails to light, igniter remains energized, and pilot gas valve remains open. If this is due to a gas interruption, the system continues
its attempt to light pilot until gas is restored and unit lights or system is turned off.
10. 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 room temperature drops below the temperature selected on the thermostat, the furnace will be switched on automatically. When
room temperature reaches the degree selected on the thermostat, the furnace will be switched off automatically.
Some thermostats have a fan mode with 2 selections: AUTO and ON. When set to AUTO, the furnace blower cycles on and off, controlled
by the thermostat. In ON mode, the furnace blower runs continuously except for a 30-sec delay at the call for 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 your furnace off. The following procedures must be followed:
1. Set your room thermostat to the lowest temperature setting. (See Fig. 13.)
2. Close the external manual gas valve. (See Fig. 6.)
3. Turn off the electrical power to your furnace. (See Fig. 14.)
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