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Gas Valve
Gas Valve
Terminals
ON/OFF Switch
Gas
Valve
Gas Valve
Inlet
Gas Manifold
Screws
(X4)
Manifold
pressure
Tap
Heat Exchanger
Panel
Flame
Sensor
Flame
Ignitor
Roll-Out
Switch
Burner
Box
Retainer Clip
& Screw Per Tube
(If equipped)
Ori ces
Burner
Figure 8. Burner & Manifold Assembly
2-STAGE GAS VALVE
Model VR9205Q
ON / OFF
Switch
Figure 9. HI & LO Input Adjusting Screws
NOx Ba e
NOx Ba e
Per Tube
(If Equipped)
Screws
(X4)
High Input
Adjusting
Screw
Inlet
Pressure
Tap
Lo Input
Adjusting
Screw
23
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