Gas valve inlet Nut retainer
Gasket Gas valve outlet pipe
Inlet gas pressure test port Brass union nut
Manifold gas pressure test port Gasket
Low fire adjustment (offset pressure) Mixer
High Fire Adjustment Fan O-ring
Gas valve Fan coupler
O-ring Fan
Figure 42 Gas valve and fan components
6.3.3.1 Measuring the inlet gas pressure
To perform a gas pressure test, you will need to use a Torx 15 screwdriver and a manometer.
6.3.3 Adjusting the gas valve
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