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1. Burner housing
2. Air intake
3. Oil pump opening plug
4. Mounting flange
5. Mounting flange gasket
6. Blast tube screw
7. Blast tube
8. Nozzle assembly
9. Nozzle mount bolt
10. Air inlet cone
11. Air screen
12. Fan wheel
13. Motor, 3450 rpm CWSE rotation
14. Air nipple
PV500-9 04-2000
PVI FIREPOWER GAS BURNER
TYPICAL CONSTRUCTION
Figure 9-1
15. Air switch
16. Door assembly *
17. Flame sensing electrode
18. Ignition electrode
19. Ignition transformer
20. On-off switch *
21. 1/4" NPT pressure port plug
22. Motor mounting plate *
23. Motor relay or starter *
24. Pressure plate
25. Primary gas ports
26. Secondary gas ports
27. Gas regulator
28. Gas valve
(1)
29. Orifice location *
30. Electrode retaining bracket
31. Burner cover
32. Burner sight glass
33. Air shutter
34. Union
35. Flame safeguard control
36. Flame cone
37. Manual gas valve
38. Lifting eye bolt
39. Power connector
40. Manifold test port
(gas spider)
* On some models
Section 9
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Summary of Contents for PVI Industries FIREPOWER PV500-9
- Page 1 1. Burner housing 2. Air intake 3. Oil pump opening plug 4. Mounting flange 5. Mounting flange gasket 6. Blast tube screw 7. Blast tube 8. Nozzle assembly 9. Nozzle mount bolt 10. Air inlet cone 11. Air screen 12. Fan wheel 13.
- Page 2 (Refer to Figure 9-1 to identify burner parts) Remove the enclosure panel cover on the water heater or boiler to expose the control circuit. Located on the back side of this cover is a wiring diagram of the unit. This diagram will show the controls used in our circuitry.
- Page 3 POWER GAS BURNER START-UP (Con’t) clearance). Ensure plate is seated firmly against the gas spider and tighten the plate retaining screws. Recheck electrode setting as to gap and position. 15. Replace nozzle assembly; be sure to connect the flame and spark rod wires before installing nozzle assembly fully into blast tube.
- Page 4 POWER GAS BURNER START-UP (Con’t) 20. Direct Spark Ignition – (DSI) Burners – No pilot: Connect a manometer to the manifold test port. Set the air shutter as shown on the tag attached to the gas train. This may not be the exact setting you end up with, but it is a good starting point.
- Page 5 REMOVAL OF THE NOZZLE ASSEMBLY (EXCEPT “L” SERIES BURNERS) Figure 9-2 ELECTRODE POSITIONS “L,P,Q,R,S,T” SERIES BURNER Figure 9-3 PV500-9 04-2000 Section 9...
- Page 6 No routine service is necessary on the blower system other than cleaning the blower wheel or oiling the motor when necessary. Blowers using three-phase motors will run in either direction depending on the connection of the power supply. On new installations, motor replacement or power supply disturbance, the rotation must be checked. Corrections can be made by interchanging any 2 wires of the three-phase power supply.
- Page 7 Figure 9-6 NOTE: Nomograph is limited for use with Natural Gases with the following characteristics: Heating Value (gross) Btu/SCF - 970-1100; Specific Gravity - 0.57-0.70; Ultimate CO - 11.7-12.2. PV500-9 04-2000 Section 9...
- Page 8 NOMOGRAPH FOR DETERMINING FLUE LOSSES FROM CO AND FLUE TEMPERATURE FOR L.P. GAS (STEADY STATE EFFICIENCY CAN BE DETERMINED FROM THE FLUE LOSS) Figure 9-7 NOTE: Nomograph is limited for use with L.P. Gas with the following characteristics: Heating Value (gross) Btu/SCF – 2466-2542; Specific Gravity – 1.522-1.574; Ultimate CO –...
- Page 9 1. BURNERS FAILS TO START Defective On/Off or fuel transfer switch. Replace switch. Control circuit has an open control contact. Check limits, low water cutoff, proof of closure switch and others as applicable. Bad fuse or switch open on incoming power source. Correct as required. Motor overloads tripped.
- Page 10 5. CARBON MONOXIDE READINGS ON GAS FIRING Flame impingement on "cold" heat transfer surfaces caused by excessive firing rate. Reduce firing rate to correct input volume. Incorrect gas/air ratios. Readjust burner to correct CO 6. GAS HIGH FIRE INPUT CANNOT BE ACHIEVED Gas company pressure regulator or meter operating incorrectly, not allowing required gas pressure at burner train inlet.
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