Shutting Down Your Furnace, Filtering OUT Trouble

to the shutdown procedures on the furnace or see “Shutting Down Your Furnace” section in this manual, and call your dealer for service.

12.Set your thermostat to the tem-per- ature that satisﬁes your com-fort 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. 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 switch on automatically. When the room temper- ature reaches the setting selected on the thermostat, the furnace will auto- matically switch off.

Some thermostats have a “FAN’’ switch 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 position, the furnace blower runs continuously except for a 77-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. When FAN switch is moved from ON to AUTO, the furnace blower will continue running for 90 sec before stopping.

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 manual gas valve that is located outside of the furnace cab- inet. (See Fig. 8.)

3.Turn off electrical power 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 electric switch on the gas valve to the OFF position. (See Fig. 22 or 23.)

6.Replace the control access door. (See Fig. 16 or 17.)

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

		21
F
OF
		22
	M	1
O	P	3
F	P
F
F	C	2	OR
	C	2
	ON
	ON
		23
6

PERFORMING

ROUTINE

MAINTENANCE

With proper maintenance and care, your furnace will operate econom- ically and dependably. Basic maintenance, which can easily be accomplished by someone who follows the directions, is found on this and the following pages. However, before beginning maintenance, follow these safety precautions:

!WARNING

Turn off electrical power sup- ply to your furnace before re- moving the access doors to service or perform mainte- nance. A 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.

FILTERING OUT

TROUBLE

A dirty ﬁlter will cause excessive stress on the furnace blower motor and can cause it to overheat and auto- matically shut down. The furnace ﬁlter should be checked every 3 or 4 weeks and cleaned if necessary.

If installed with factory speciﬁed dis- posable media ﬁlter, check or replace ﬁlter before each heating and cooling season. Replace disposable media ﬁlter at least once a year.