PVI FIREPOWER®

B40 OIL BURNER START-UP

(Refer to Figure 22-1 to identify burner parts)

1.Remove the enclosure panel cover on the water heater or boiler to expose the control circuit. The wiring diagram, located on the backside of the cover, will show the controls used in our circuitry.

2.Visually check that all components are intact and no damage has occurred during transit.

3.Check all connections in control cabinet. A loose connection could cause intermittent shutdowns.

4.Check oil supply lines to insure proper practices have been followed and installation complies with local codes. Use only a two-pipe system. Check for adequate burner intake air supply.

NOTE: Do not tamper with or readjust program dipswitch settings. This will cause the control to become inoperable. Damage resulting from tampering will be excluded from coverage under the warranty of this unit.

5.Remove the flame safeguard control from its base. Check the connections in control mounting base; loose connections can cause nuisance shutdowns. When applicable, check the time card or programmer, for good connection.

6.With electrodes exposed, check them for the proper settings as in Figure 22-4 & 7, pages 7 & 8. Check for any hairline cracks in the insulators. Should replacement of burner electrodes be required, certain procedures must be followed. In all cases, removal of electrodes is accomplished by loosening the electrode mounting clamps. Draw electrodes out of the nozzle assembly through the holes in the pressure plate.

7.Open manual oil valve(s). Make certain check valves are positioned for the correct oil flow. There should not be a manual shut-off valve in the return line from the pump to the tank.

8.Pull the nozzle assembly to check the ignition electrodes. See Figure 22-3 & 6, pages 7 & 8.

9.Inspect the electrodes for cracked ceramic or loose retaining studs that hold the wire within the ceramic. Select the proper pressure plate hole to place each electrode and insert the electrode through the hole, retaining stud end first.

10.Tighten the electrode mounting clamp slightly until electrode ceramics are seated firmly and completely in the mounting bracket without gaps between ceramics and mounting bracket at the bearing faces.

11.Measure and set electrodes according to Figure 22-4 & 7, pages 7 & 8. After gaps and setting are complete, fully tighten electrode mounting clamp.

Do not overtighten or insulation may crack.

12.Replace nozzle assembly; be sure to connect the spark rod wires before installing nozzle assembly fully into blast tube. Check connections on the ends of the flame and spark rod wires for good contact. Look for properly stripped wire ends. Be sure connectors are firmly attached to the ignition rod ends. Insulating boots can give a false feeling of proper seating. DO NOT MOVE ELECTRODES. Be careful not to bump electrodes. Check fan wheel for free rotation.

13.Connect a test meter to the control for reading the flame response signal.

NOTE: Some controls read the flame signal in micro amps and some in volts DC. The MC120 series control has two terminals marked for reading volts DC.

14.Be sure tank is filled with water. Once the burner is reassembled, a gauge to read pressure, preferably a 300 psi gauge, will be needed to read oil pressures. Connect gauge to the pressure side of the oil pump. Connect vacuum gauge to supply side of oil pump (15”HG maximum allowed).

15.Single stage oil burners. Before turning the unit on, make sure all valves in the oil supply and return lines are on. Check the air damper setting against the setup tag attached to the burner. Turn the unit on using the rocker switch on the side of the control cabinet. If the operating control switches are closed, the burner blower should come on and prepurge begins.

If nothing happens, check the control to be sure it is not in the tripped position and reset it by pushing the flame safeguard reset button. Burner should prepurge for no more than thirty seconds.

PV500-22A 08-98

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Section 22A