Shutting Down Your Furnace

OFF	ON
	A02267

12.After about 17 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 approxim- ately 25-45 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 does not come on, shut down your furnace and call your dealer for service.

13. Set your thermostat to the temperature that satisfies your

comfort requirements. SUGGESTION: Setting the thermo-

Fig. 9 - Control Switch to ON

8. Replace the outer door.

A10301

Fig. 10 - Furnace Door Replaced

9. Turn ON the electrical supply to the furnace.

A92359

Fig. 11 - Turn On Electrical Supply

10. Open the external manual gas valve.

A06189

Fig. 12 - Open Valve

11.Set the room thermostat to a temperature slightly above the room temperature. This will automatically signal the furnace to start. The inducer motor will start and the hot surface igniter

will energize. When hot, the igniter will have an orange glow.

stat back a few degrees—and compensating for the differ-

ence with warmer clothing—can make a big difference in

your fuel consumption on extremely cold days. The few de-

grees 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 temperature reaches the setting selected on the thermostat, the furnace will be automatically switched off.

Continuous Fan Operation -Some thermostats have a “FAN” switch with 2 selections: AUTO and ON. When thermostat is set on AUTO, the furnace blower cycles on and off, controlled by the thermostat. In ON position, the furnace blower runs continuously except for a 42-62 sec delay at the “call for heat.” Continuous fan keeps the temperature level in your home more evenly balanced. It also continuously filters the indoor air.

Comfort Fant -On all but the 310AAV or 310JAV, the continuous fan blower speed can be increased or decreased if desired due to change of seasons, large gatherings in your home, etc. Simply change your “FAN” switch from “on” to “off” (or “auto” depending on your thermostat), and then return to “on”, within 1 to 3 seconds. The blower will switch to the next highest speed. There are at least 3 speeds to choose from. If the blower is running on its highest speed, a request to change will direct the blower to return to its lowest speed.

Should you ever suspect a malfunction in your furnace, you will need to turn the furnace off. The following procedures must be followed:

1.Set your room thermostat to the lowest temperature setting. (See Fig. 3.)

2.Close the external manual gas valve (See Fig. 4).

3.Turn off electrical supply to the furnace. (See Fig. 5.)

4.Remove outer furnace door. (See Fig. 6.)

5.Turn the switch on the gas control to the OFF position. (See Fig. 7.)

6.Replace the outer furnace door. (See Fig. 9.)

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