Installation and operating instruction
Dual fuel burner WGL30/1-C ZM
3 Product description
83260202 1/2019-02 La
14-144
3.3.3 Oil supply
Oil pump
The pump draws the oil through the supply line and carries it under pressure to the
oil nozzle. The pressure regulating valve keeps the oil pressure constant.
Solenoid valves
The solenoid valves open and close the oil supply.
For ignition, the combustion manager opens the stage 1 solenoid valve and the
safety solenoid valves. Stage 2 solenoid valve opens or closes depending on heat
demand.
Minimum oil pressure switch
The minimum oil pressure switch monitors the pump pressure in the supply. If the
preset pressure is not achieved, the combustion manager initiates a lockout.
Sequence diagram
P
1
2
6
5
4
3
7
8
1
Oil pump on burner
2
Additional safety solenoid valve on the oil pump
3
Minimum oil pressure switch
4
Additional safety solenoid valve
5
Stage 1 solenoid valve
6
Nozzle head with 2 nozzles
7
Throttle orifice (Ø 1.2 mm) incorporated in screwed union
8
Stage 2 solenoid valve
