Bryant 345MAV manual Shutting Down Your Furnace, Performing Routine Maintenance

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.

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SHUTTING DOWN

YOUR FURNACE

Should you need to shut down your furnace for service or maintenance, you will need to turn the furnace off.

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The following procedures must be followed:

1.Set your room thermostat to the lowest temperature setting. (See Fig. 17.)

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

3.Turn off electrical supply to the furnace. (See Fig. 18.)

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

5.Turn control switch or knob on the gas valve to OFF position.

(See Fig. 19 or 20.)

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

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7.If the furnace is being shut down because of a malfunction, call your dealer as soon as possible.

!CAUTION

Furnace is not to be installed, operated, and then turned off and left turned off in an unoc- cupied structure during winter. (See winterizing procedures in maintenance section.)

	M	1	OFF	ON
O	P	3
F
F		2	OR
	C
	ON
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PERFORMING

ROUTINE

MAINTENANCE

With proper maintenance and care, your furnace will operate economically and dependably. Instructions for basic main- tenance are found on this and the follow- ing pages. However, before beginning maintenance, follow these safety pre- cautions:

!WARNING

Turn off electrical power sup- ply to your furnace before re- moving the main furnace door to service or perform mainte- nance. Failure to follow this warning could result in per- sonal injury or death.

!CAUTION

Although special care has been taken to minimize sharp edges, be extremely careful when handling parts or reach- ing into the furnace.