Lennox LGM Series Manual page 39

5- Turn the knob on the gas valve clockwise
Depress 36C knob slightly. Do not force.
6- Wait five (5) minutes to clear out any gas. If you then
smell gas, STOP! Immediately call your gas suppli­
er from a neighbor's phone. Follow the gas supplier's
instructions. If you do not smell gas, go to the next step.
7- Turn the knob on the gas valve counterclockwise
to "ON". Do not force.
8- Close or replace the heat section access panel.
9- Turn on all electrical power to appliance.
10- Set thermostat to desired setting.
11- The combustion air inducer will start. The burners will
light within 40 seconds.
12- If the appliance does not light the first time (gas line not
fully purged), it will attempt up to two more ignitions be­
fore locking out.
13- If lockout occurs, repeat steps 1 through 10.
14- If the appliance will not operate, follow the instructions
"Turning Off Gas to Appliance" and call your service
technician or gas supplier.
Turning Off Gas to Appliance
1- If using an electromechanical thermostat, set to the
lowest setting.
2- Before performing any service, turn off all electrical
power to the appliance.
3- Open or remove the heat section access panel.
4- Turn the knob on the gas valve clockwise
Depress 36C knob slightly. Do not force.
to "OFF". D-Safety or Emergency Shutdown
Turn off power to the unit. Close manual and main gas
valves.
WHITE-RODGERS 36C76 GAS VALVE
INLET
PRESSURE
TAP (SIDE)
HONEYWELL VR8305/VR8205 GAS VALVE
HIGH FIRE
ADJUSTMENT
INLET
PRESSURE
TAP
to "OFF".
Page 39
STAGE 2 MANUAL MANIFOLD
PRESSURE ADJUSTMENT
SCREW UNDER CAP
GAS VALVE
SHOWN IN "OFF"
POSITION
D-1
GV-1
GV-2
GAS VALVE SHOWN IN
LOW FIRE
ADJUSTMENT
FIGURE 29
OUTLET
PRESSURE
TAP (SIDE)
C-1
C2
"OFF" POSITION
OUTLET
PRESSURE
TAP