Bryant 345MAV manual Steps for Starting Your Furnace

STEPS FOR STARTING YOUR FURNACE

1.Set your room thermostat to the low- est temperature setting. (See Fig. 6.)

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2.Close the external manual gas valve. (See Fig. 7.)

3.Turn off electrical supply to the fur- nace. (See Fig. 8.)

4.Remove the main furnace door. (See Fig. 9.)

5.Gas valve will have EITHER a con- trol switch or control knob to turn OFF or ON. Turn control switch or knob on the gas valve to the OFF position and wait 5 minutes. (See Fig. 10 or 11.) Then smell for gas, including near the floor. If you smell gas, STOP! Follow operating instructions on main furnace door.

6.After waiting 5 minutes, turn con- trol switch or knob on the gas valve to the ON position.

(See Fig. 12 or 13.)

7.Replace main furnace door. (See Fig. 14.)

8.Turn on electrical supply to the fur- nace and wait 1 minute.

(See Fig. 15.)

9.Open the external manual gas valve. (See Fig. 16.)

10.Set room thermostat to a tem- perature slightly above room temperature. This will auto- matically signal the furnace to start.

11.When the furnace receives the start signal, the inducer is started. When the pressure switch verifies that there is sufficient combustion air, the control energizes the hot surface ignitor. After the hot surface ignitor is heated for 17 sec, the gas valve permits gas to flow to the main burn- ers. After ignition and a time delay of 60 sec, the furnace blower starts.

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NOTE: If the burners fail to ignite after 4 attempts, the furnace control system will lock out. If lockout occurs, main burners fail to light, or blower does not come on, shut down the furnace and call your dealer for service.

12.Set your thermostat to the temper- ature that satisfies your comfort requirements.

SUGGESTION: Setting the ther- mostat back a few degrees and compensating for the difference with warmer clothing can make a big difference in your fuel con- sumption 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 thermo- stat, the furnace will be switched off automatically.

Some thermostats have a FAN mode with 2 selections, AUTO and ON. When thermostat is set to AUTO, the furnace blower cycles on and off, controlled by the thermostat. In ON mode, the furnace blower runs continu- ously. This keeps the temperature level in your home more evenly balanced. It also continuously fil- ters the indoor air.