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Flue Transition
Combustion Air Inducer
Combustion Air Orifice
Combustion Air
Prove Switch
Flue Collector Box
Heat Exchanger
Flame Sensor
Gas Valve
Burners
Ignitor
NO
x
Insert
Primary Limit
Blower Assembly
Capacitor
Gasket
Flue Box Gasket
Flame Rollout Switches*
Flame Rollout Bracket
Gas Orifices
Ignitor Bracket
Burner Bottom Shield
Limit Shield
Secondary Limit
(as required)
(NO
x
Units Only)
G50UH(X) PARTS ARRANGEMENT
(UP FLOW POSITION)
FIGURE 1
Gas Manifold
*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.
Air Deflector
ALL G50UH−48C−135,
ALL G50UH−36C−110.
ALL G50UH−60D−155 &
G50UH−60C−110−1, −2, −3
Units Only
SURELIGHT
CONTROL BOARD
TRANSFORMER
CIRCUIT BREAKER
DOOR INTERLOCK
SWITCH
Pressure Port
Pressure Port Location
for −1 to −14 units
