Parts Identification; Heating Components - Lennox G40UH(X) Unit Information

HEAT EXCHANGER ASSEMBLY
PROVE
SWITCH
COMBUSTION AIR
INDUCER
FLUE COLLECTOR BOX
COMBUSTION AIR INDUCER
PRIMARY LIMIT SHIELD
PRIMARY LIMIT
MANIFOLD/BURNER
G40UH(X) PARTS IDENTIFICATION
(HORIZONTAL POSITION)
SECONDARY LIMIT
PRIMARY LIMIT
GAS VALVE
FIGURE 2
G40UH(X) HEATING COMPONENTS
PROVE SWITCH
ROLLOUT SWITCHES*
GAS VALVE
ASSEMBLY
FIGURE 3
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BLOWER ASSEMBLY
BURNER
ASSEMBLY
BURNER
ACCESS PANEL
HEAT EXCHANGER
NO Insert
x
(NO Units Only)
x
*135 and 155 kBtuh units only −−
Flame rollout switches are located
on brackets on the inner sides (one
on the left and one on the right) of
the burner box.
BLOWER
ACCESS PANEL
CONTROL
BOARD
Air Deflector
G40UH−48C−135,
G40UH−36C−110,
G40UH−60D−155 &
G40UH−60C−110−1,
−2, −3 Units Only