Weishaupt WM-L20/2-A R User Manual

Installation and operating instruction
Oil burner WM-L20/2-A R (W-FM100/200)
3 Product description
83252902 1/2019-09 La
11-84
Sequence of operation
During the pre-purge time all solenoid valves are closed. For burner ignition, the
combustion manager opens the solenoid valves.
The oil quantity regulator is in the open position (ignition position).
Due to the low resistance of the oil quantity regulator in the return only a small
quantity of oil is atomised at the nozzle, the larger quantity flows to the pump return.
If the load increases, the metering slot in the oil quantity regulator is reduces, this
reduces the oil flow in the return and thus increases the oil quantity at the nozzle
outlet.
M
P
P
3
1
2
5
6
5
7
4
1 Oil pump
2 Minimum oil pressure switch (optional)
3 Solenoid valve supply (fitted in flow direction)
4 Nozzle head with nozzle
5 Solenoid valve return (fitted against flow direction)
6 Oil quantity regulator
7 Max. oil pressure switch
One solenoid valve in the supply is always switched electrically in series with one
solenoid valve in the return. The voltage of the solenoid coil is therefore 115 V at
230 V / 50 Hz mains voltage.

Weishaupt WM-L20/2-A R Specifications

General

Brand	Weishaupt
Model	WM-L20/2-A R
Category	Burner
Language	English