Lennox G23(X) User Manual

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4 - This appliance is equipped with an ignition device
which automatically lights the furnace. Do not try to
light the furnace 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 switchto OFF.Do not force. See fig-
ure 33.
21
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FIGURE 33
HONEYWELL VR8204 SERIES GAS VALVE
GAS VALVE SHOWN IN OFF POSITION
WHITE RODGERS
36E GAS VALVE
GAS VALVE
SHOWN
IN OFF
POSITION
7 - Wait five (5) 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
.
9 - Replace upper access panel.
10- Turn on all electrical power to unit.
11- Set thermostat to desired setting.
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12- If the appliance still willnot operate, follow the instruc-
tions “To Turn Off Gas To Unit” and call your service
technician or gas supplier.
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 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.
C-Safety or Emergency Shutdown
Turn off unit power. Close manual and main gas
valves.
D-Extended Period Shutdown
Turnoff thermostat or set to “UNOCCUPIED”mode.Close
allgas valves (both internaland external to unit) to guaran-
tee no gas leak into combustion chamber. Turn off power
to unit. All access panels, covers and vent caps must be in
place and secured.
IV-HEATING SYSTEM SERVICE CHECKS
A-A.G.A Certification
All units are A.G.A. design certified without modifications.
Refer to the G23(X) Operation and Installation Instruction
Manual Information.
B-Gas Piping
Gas supply piping should not allow more than
0.5W.C. drop in pressure between gas meter and
unit. Supply gas pipe must not be smaller than unit
gas connection. See table 16 for gas pipe capacity.
Compounds used on gas piping threaded joints should be
resistant to action of liquefied petroleum gases.
C-Testing Gas Piping
IMPORTANT
In case emergency shutdown is required, turn off
the main shut-off valve and disconnect the main
power to unit. These controls should be properly
labeled by the installer.
When pressure testing gas lines, the gas valve must be
disconnected and isolated. Gas valves can be damaged if
subjected tomorethan0.5psig(14” W.C.).See figure 34
. If
thepressureis equal to orless than 0.5psig (14”W.C.),use
the manual shut-off valve before pressure testing to iso-
late furnace from gas supply.
FIGURE 34
GAS PIPING TEST PROCEDURE (Typical)
1/8” NPT
PLUGGED
TAP
MANUAL MAIN
SHUT-OFF
VALVE
UNION
CONDENSATE
TRAP
TEE
CAP
GAS VALVE
GAS VALVE WILL NOT HOLD
TEST PRESSURE IN EXCESS
OF 0.5 PSIG (14W.C.)

Lennox G23(X) Specifications

General

Brand	Lennox
Model	G23(X)
Category	Furnace
Language	English