Lennox International Inc Comprehensive Manual for Lennox G23 Series Gas Furnace Operation and Maintenance

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Gas Valve Operation (Figure 3)

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

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

THERMOSTATS

FIGURE 2

3- Turn off all electrical power to appliance.

4- This appliance is equipped with an ignition device which automatically lights the burners. Do not try to light the burners by hand.

5- Remove upper access panel.

6- On Honeywell VR8204 gas valves, turn knob on gas valve clockwise to OFF. For White Rodgers 36E gas valves, move switch to OFF. Do not force the switch. See figure 3.

HONEYWELL VR8204 SERIES GAS VALVE

ON

OFF

GAS VALVE SHOWN IN OFF POSITION

WHITE RODGERS

36E GAS VALVE

GAS VALVE

SHOWN

IN OFF

POSITION

FIGURE 3

7- Wait fifteen (15) 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.

8- For Honeywell VR8204 gas valves, turn knob on gas

valve counterclockwise to ON. For White Rodg. ers 36E gas valves, move switch to ON. Do not force.

9- Replace upper access panel.

10- Turn on all electrical power to unit.

11- Set thermostat to desired setting.

NOTE-When unit is first started, steps 1 through 11 may need to be repeated to purge air from line.

12- If the appliance still will not operate, follow the in. structions •To Turn Off Gas To Unit" and call your ser. vice technician or gas supplier.

Turning Off The Gas To The Unit

1- Set thermostat to lowest setting.

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

3- Remove upper access panel.

4- On Honeywell VR8204 gas valves, turn knob on gas valve clockwise to OFF. For White Rodgers 36E gas valves, move switch to OFF. Do not force.

5- Replace upper access panel.

Filters

A filter must be in place anytime the unit is in operation. The filter may be located in the unit (optional kit) or installed in a return air grille. Ask your dealer to show you the filter location. The filter should be inspected monthly and cleaned when necessary to assure proper furnace operation.

Filters used inside the G23 series unit are available from Len. nox and must be ordered separately. These foam filters may be cleaned for reuse. If replacement is necessary, order Len. nox part no. 31J81 for 14 X 25 inch filter for G23Q2-50, Q3-50 and Q2/3-75 units, P-8-7822 for 16 X 25 inch filter for G23Q3-100 units, and P-8-7831 for 20 X 25 inch filter for G23Q3/4-100, Q3/4-125, Q4/5-75, Q4/5-100, Q5/6-125 and Q5/6-150 units. Use the following procedure to clean filter. Refer to figure 1.

In-Unit Filter with Bottom Return Air 1- Turn off electric power to furnace.

2- Remove blower access panel.

3- Remove filter by pressing side filter clips and pulling filter up and out. See figure 4.

BOTTOM RETURN FILTER INSTALLATION

REAR FILTER CLIP

 

FURNACE

 

BACK

SIDE FILTER CLIPS (2)

 

RETURN AIR OPENING

FURNACE

FURNACE

 

FRONT

BASE BOT8

FIGURE 4

4- Clean filter with cold water and a mild soap. Direct water through filter in the opposite direction of air flow. Remove all soap residue.

5- Allow filter to dry then spray with filter handicoater (P-8-5069), available from your Lennox dealer, prior to reinstallation.

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Contents Series What to do if YOU Smell GASG23 Parts Identification Important Directions Lighting Information & OperationFilters Seasonal Inspections Safety Precautions Service ReminderPlanned Service