Because of different boiler types existing on the market, with varying combustion chamber designs, it is not possible to state a definite spray angle or spray pattern
Note that the spray angle and the spray pattern change with the pump pressure.
Components:
Shrouded disc
Nozzle
Ignition electrodes
Nozzle assembly
Ignition cable
Ignition transformer
Photo cell
Control box
Reset button
Cover, inspection glass
Fan wheel
Motor
Nozzle assembly adjustment
Blast tube
Air adjustment
Air damper
Solenoid valve
Air intake
Pump
Function:
Switch on operating switch and twin thermostat: The burner motor starts, an ignition spark is formed, the prepurge goes on till the prepurge period expires and the solenoid valve opens
Solenoid valve opens: Oil mist is formed and ignited.
The photocell indicates a flame
The ignition spark goes out 15 s. after flame indication
The ignition spark goes out 2 s. after flame indication when the ignition transformer is connected to terminal
The safety time expires: If no flame is established before this time limit the control cuts out.
If for some reasons the flame disappears after this time limit, the burner will make an attempt to re-start
Operating position: If the burner operation is interrupted by means of the main switch or the thermostat, a new start takes place when the conditions in accordance with point 1 are fulfilled
The oil burner control cuts out: A red lamp in the control is lit.
Press the reset button and the burner re-starts.
Post-ignition: If a post-igniton of 15 s. is wanted, move the ignition transformer from terminal 7 to terminal 6
Two Pipe Operation:
When the solenoid valve is non- activated, the by-pass channel between the pressure and return sides of the valve is open.
No pressure will then be built up to open the valve.
It does not matter which speed the gear set has.
When the solenoid is activated, this by- pass channel will be closed and because of the full speed of the gear-set, the pressure necessary to open the valve will be built up very rapidly