Lennox G26Q2-50

Page 20
FIGURE 32
GWYCR
SURELIGHT CONTROL
CONTROL
BOX
THERMOSTAT
IGNITION
CONTROL
GAS
VALVE
LIMIT
BLACK
BROWN
TO COMPRESSOR
CONTACTOR
FIELD INSTALLED CLASS II 24V VOLTAGE
FIELD INSTALLED LINE VOLTAGE
TYPICAL G26 FIELD WIRING DIAGRAM
L1 N
FUSED DISCONNECT SWITCH
(FURNISHED BY INSTALLER)
TRANSFORMER
DOOR
INTERLOCK
SWITCH
COMBUSTION
AIR INDUCER
COMBUSTION
AIR PROVE
SWITCH
FIELD
MAKE-UP
BOX
GND
J69
WHITE
TO ACCESSORY IF USED.
(ELECTRONIC AIR CLEANER)
IF NOT NEEDED, DO NOT INSTALL
ACCESSORY WIRE IN J69.
GWRY
FLAME
ROLLOUT
SWITCH
Unit Start-Up
FOR YOUR SAFETY READ BEFORE LIGHTING
WARNING
Do not use this furnace if any part has been underwaĆ
ter. Immediately call a qualified service technician to
inspect the furnace and to replace any part of the
control system and any gas control which has been
under water.
WARNING
If overheating occurs, or if gas supply fails to shut
off, shut off the manual gas valve to the appliance beĆ
fore shutting off electrical supply.
CAUTION
Before attempting to perform any service or mainteĆ
nance, turn the electrical power to unit OFF at disĆ
connect switch.
BEFORE OPERATING 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.
Gas valve may be equipped with either a gas control knob
or lever. Use only your hand to push in or turn the gas conĆ
trol knob or move the gas control lever. Never use tools. If
the knob will not push in or turn or if lever will not move by
hand, do not try to repair it, call a qualified service techniĆ
cian. Force or attempted repair may result in a fire or exploĆ
sion.
G26 units are equipped with a SureLightt ignition sysĆ
tem. Do not attempt to manually light burners on this furĆ
nace. Each time the thermostat calls for heat, the burners
will automatically light. The ignitor does not get hot when
there is no call for heat on units with SureLightt ignition
system.
Gas Valve Operation (Figure 33)
WARNING
If you do not follow these instructions exactly, a fire
or explosion may result causing property damage,
personal injury or death.
1 - STOP! Read the safety information at the beginning of
this section.
2 - Set thermostat to lowest setting.
3 - Turn off all electrical power to furnace.
4 - This furnace is equipped with an ignition device
which automatically lights the burner. Do not try to
light the burners by hand.
5 - Remove the unit access panel.
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