Lennox International Inc. 12GCS Air Conditioner User Manual


 
Heating Start-Up
FOR YOUR SAFETY READ BEFORE LIGHTING
BEFORE LIGHTING, smell all around the appliance area
for gas. Be sureto smellnext to the floorbecausesomegas
is heavier than air and will settle on the floor.
Electric shock hazard. Can cause injury
or death. Do not use this furnace if any
part has been under water. Immediately
call a qualified service technician to in-
spect the furnace and to replace any part
of the control system andanygas control
which has been under water.
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Danger of explosion. Can cause injury or
product or property damage. If overheating
occurs orif gas supply failsto shut off, shut
off the manual gas valve to the appliance
before shutting off electrical supply.
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Danger of explosion and fire. Can cause
injury or product or property damage. You
must follow these instructions exactly.
Electricshockhazard.Cancauseinjury or
death. Before attempting to perform any
serviceor maintenance, turn the electrical
power to unit OFF at disconnect switch(es).
Unit may have multiple power supplies.
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To place the unit into heating operation:
This unit does not have a pilot. It is equipped with an
ignition system which automatically lights the burner.
Do not try to light by hand.
Gas Valve Operation (Figures )
1- STOP! Read the safety information at the beginningof
this section.
2 - Set thermostat to lowest setting. See figure 2.
THERMOSTATS
3 - Turn off all electrical power to unit.
4 - This unit is equipped with an ignition device which au-
tomatically lights thepilot. Donottry tolightthepilot by
hand.
5 - Remove burner compartment access panel.
6-
Honeywell VR8205 Gas Valve
- Turn knob on gas
valve clockwise
to OFF. Refer to figure 3.
Robertshaw7200GasValve
-Depressleverongas
controlandmovetoOFFandrelease.Donotforce.
Refer to figure 4.
HONEYWELL VR8205 SERIES GAS VALVE
GAS VALVE SHOWN IN OFF POSITION
ROBERTSHAW 7200 GAS VALVE
GAS VALVE
SELECTOR ARM
IN OFF
POSITION
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-
Honeywell VR8205 Gas Valve
- Turn knob on gas
valve counterclockwise
to ON.
Robertshaw 7200 Gas Valve
- Depress lever on gas
control and move to ON and release.
9 - Replace the access panel.
10- Turn on all electrical power to unit.
11- Set thermostat to desired setting.
12- Ifthe appliance still will not operate, follow the instruc-
tions “To Turn Off Gas To Unit” and call your service
technician or gas supplier.