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Installation and operating instruction
Combustion manager W-FM 100 und W-FM 200
3 Product description
83054802 1/2018-07 La
39-228
3.4.7 Oil fuel valves
The oil solenoid valves are connected to the outputs X7-01, X7-02, X8-02 and
X8-03. The outputs are controlled according to the program sequence [ch. 3.2.7].
L
1
2
X7
-0
1
3
PE
N
L
V2
1
2
X7
-02
3
PE
N
L
V3
1
2
X8-02
3
4
N
PE
V1
L
1
2
X8-03
3
4
N
PE
V1
2
1
3
2
1
MS
EL
Multi-stage operation
Output
Light oil (EL)
Heavy oil (MS) three stage
Heavy oil (MS) two stage
X7-01
Stage 2
Stage 1
X7-02
Stage 3
Stage 2
X8-02
Stage 1
-
X8-03
Additional solenoid valve
Additional solenoid valve
Nozzle circulation via output X8-03 is not possible on three stage heavy oil burners,
as the combustion manager controls outputs X8-02 and X8-03 simultaneously. The
solenoid valve for nozzle circulation is connected to output X4-02 (ignition) and
parameter
IgnOilPumpStart
must be set to
on in Ph22
1
2
X7-01
3
PE
N
L
V2
L
1
2
X8-02
3
4
N
PE
V1
MS
EL
L
1
2
X8-02
3
4
N
PE
V1
L
1
2
X8-03
3
4
N
PE
V1
Modulating operation
Output
Light oil (EL)
Heavy oil (MS)
X7-01
-
Nozzle solenoid (nozzle head)
X8-02
Nozzle solenoid (nozzle head)
-or-
Solenoid valves
(1
Additional solenoid valves
(1
Bypass valve (only with separate
pump station)
X8-03
Additional solenoid valves
(1
-
(1
The solenoid valve in the supply is always switched electrically in series with the
solenoid valve in the return.