Troubleshooting guide

PV500-23 04-2005 Section 23

POWER VT

BOILER

GAS BURNER

CARBON MONOXIDE WARNING: An annual or seasonal combustion checkout must be

performed by a qualified service agency to ensure safe operation. Failure to maintain

proper combustion can result in injury or death.

Typical Construction

Figure 23-6

1. Static fan 11. Manual shutoff valves

2. End cap 12. Main gas pressure regulator

3. Gas nozzle assembly 13. Main gas valve

4. Pressure plate 14. Pilot gas valve

5. Blast tube & burner housing junction 15. Auxiliary gas valve

6. Ignition transformer 16. Electrode clamp

7. Ignition electrode 17. Fresh air vent damper

8. Flame sensing electrode

18. FGR union with orifice

9. Ignition electrode boot (red)

19. Flame electrode boot (black)

10. Electrode clamp

20. Pilot gas pressure regulator