Lighting Information and Operation

WARNING

If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life.

BEFORE LIGHTING smell all around the appliance area for gas. Be sure to smell next to the floor because some gas is heavier than air and will settle on the floor.

Placing Furnace Into Operation

Filters

G24MCE series units are equipped with external filters which should be inspected monthly and replaced when necessary to assure proper furnace operation. See table 1 for filter sizes. Replacement filters used with G24MCE-40/60/75 units must have a minimum veloc% ity rating of 2 m/s (400 FPM). Replacement filters used with G24MCE-100/120/140 units require a minimum velocity rating of 3.2 m/s (625 FPM). Figures 2 and 3 show possible filter locations when the units are installed in the upflow position.

TABLE 1

G24MCE units are equipped with an electronic ignition sys% tem. Do not attempt to manually light burners on these fur%

MODEL NO.

FILTER SIZE -

millimeters (inches)

naces. Each time the thermostat calls for heat, the burner will automatically light.

G24MCE-45/60/75

406X508X25

(16 X 20 X 1)

G24MCE-100/120/140

508X508X25

FIGURE 1

Gas Valve Operation

1 - STOP! Read the safety information at the beginning of this section.

2 - Set the thermostat to lowest setting. See figure 1.

3 - Turn off all electrical power to the unit.

4 - This furnace Is equipped with an ignition device which automatically lights the burner. Do not try to light the burner by hand.

5 - Wait five (5) minutes to clear out any gas. If you then smell gas, STOP! Immediately call your gas supplier from a neighbor's phone. Follow the gas supplier's instructions. If you do not smell gas go to next step.

6- Turn on all electrical power to the unit.

7- Set the thermostat to desired setting.

NOTE-When unit is first started, steps 1 through 7 may need to be repeated to purge air from gas line.

8- If the appliance still will not operate, follow the instructions •Turning Off Gas To Unit" and call your service technician or gas supplier.

Turning Off Gas To Unit

1 - Set the thermostat to the lowest setting.

2 - Turn off all electrical power to the unit if service is to be performed.

Page 4

(20 X 20 X 1)

UPFLOW FURNACE

BOTTOM RETURN AIR

FIGURE 2