Lennox International Inc. G21Q - Manual (Page 4)

Page 3
THERMOSTATS
FIGURE 3
1- Set thermostat to lowest setting. See figure 3.
2- Turn off all electrical power to furnace. See figure 5.
3- This appliance Is equipped with an ignition device
which automatically lights the burner. Do not try to
light the burner by hand.
4- Remove unit access panel.
5- On Robertshaw 7200 gas valve, depress lever on
gas control and move to OFF and release. For
White Rodgers 36E gas valves, move switch to OFF.
Do not force.
6- Wait five (5) minutes to clear out any gas. Smell for
gas, including near the floor. If you then smell gas,
STOP! Immediately call your gas supplier from a
neighbor's phone. Follow the gas supplier's instrucĆ
tions. If you do not smell gas go to next step.
7- On Robertshaw 7200 gas valve, depress lever on
gas control and move to ON and release. For White
Rodgers 36E gas valves, move switch to ON.
8- Replace unit access panel.
9- Turn on all electrical power to unit.
10- Set thermostat to desired setting. See figure 3.
11- If the furnace will not operate, follow the instructions
To Turn Off Gas To Unit" and call your service techniĆ
cian or gas supplier.
B-To Turn Off Gas To Unit
1- Set thermostat to lowest setting.
2- Turn off all electrical power to unit if service is to be
performed.
3- Remove heat section access panel.
4- On Robertshaw 7200 gas valve, depress lever on
gas control and move to OFF and release. For White
Rodgers 36E gas valves, move switch to OFF.
5- Replace unit access panel.