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10- Remove the burner box assembly. Retain six screws
holding the assembly in place. See figure 3.
11- Remove the vent connector from the combustion air
inducer. See figure 3.
12- Remove the combustion air inducer. See figure 3.
REMOVE BURNER BOX - LG/KG
VESTIBULE
COLLECTOR
COVER
Remove screws secur
ing burner box; 3 on the
top, 3 on the bottom.
FIGURE 3
DISCONNECT WIRING - LG/KG/ZG
HEAT SECTION
S10
PRIMARY LIMIT
LGH/KG/ZG
FS1
FLAME
ROLLOUT
SENSOR
COMBUSTION
AIR INDUCER
VENT
CONNECTOR
AIR TUBING
BURNER
PRESSURE
BOX
FITTING
S47
E1
FLAME
SPARK
IGNITOR
SWITCH
FIGURE 2
13- Remove J19 from the division panel between the
heat and compressor sections. See figure 2.
14- Remove 11 screws securing heat exchanger.
Remove Heat Exchanger - LG/KG
Downflow Air Discharge Applications:
1- Remove the horizontal supply air panel.
2- Lift the back end of heat exchanger over the top of the
supports and slide exchanger slightly toward the front
of the unit. See figure 4.
3- Remove the heat exchanger from the front of the unit.
SIDE VIEW OF HEAT EXCHANGER - LG/KG
LIft the back end of the
heat exchanger over
supports to remove.
Page 2
COMPRESSOR
SECTION
P19
J19
PRIMARY LIMIT
S18
COMBUSTION
AIR BLOWER
PROVE SWITCH
HEAT
EXCHANGER
HEAT
EXCHANGER
SUPPORT
FIGURE 4
S10
LGM
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