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j2 - Valve Train NOTE: Component size and layout may vary
Incoming Gas Pressure Test Port. ¼” threaded cap – remove and connect manometer to measure incoming fuel pressure.
Pilot gas Regulator. Reduces incoming line pressure for proper pilot size.
Pilot gas Solenoid. Turns gas on/off to pilot.
Profile Pressure Test Ports Allows technician to connect manometer to view air pressure across the burner.
Burner Manifold Pressure Test Port ¼” threaded cap – remove and connect manometer to measure fuel pressure going into the burner.
Main Gas Inlet. 2 lbs. (56”w.c.) gas pressure typical.
Primary Gas Valve. Turns gas on/off.
Gas Actuator Controls gas flow to burner.
Main Gas Regulator. Controls gas pressure to burner during main flame.
High Gas Pressure Switch Monitors gas pressure entering the burner, if pressure exceeds setting, switch will open and de-energize power to flame controller interlock circuit.
Low Fire Position Set Screw Prevents the actuator from closing all the way to zero. Adjust as needed to increase or decrease low fire setting.
Manometer connected to test port Measure incoming fuel pressure Typical Requirements:
Minimum: 50” w.c. (1.8 PSI) Maximum: 62” w.c. (2.2 PSI
See Unit MFG Tag for proper incoming pressure.
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