Weishaupt W-FM 100 Installation And Operating Instruction page 29

QRA73
M
UV
+
AGM23
1
QRB
2
POWER QRI
3
L
4
N
5
PE
6
QRI / FSV
1
ION
83054802 1/2018-07 La
Installation and operating instruction
Combustion manager W-FM 100 und W-FM 200
QRA73
The flame sensor QRA73 (UV cell) is connected to input X10-02:2-6 using
plug AGM23.
The flame sensor QRA73 is suitable for continuous operation. The combustion
manager tests the flame sensor in cycles in operating position (Phase 60) by simu-
lating a flame failure. The voltage at output X10-02:2 is increased 14 V to 21 V for
0.5 seconds. The signal voltage at the flame sensor therefore drops to 0 V
and the combustion manager receives the expected Off signal at input X10-02:6.
If the combustion manager is installed in a control panel, the connection must be
divided into 2 lines after the AGM23 plug and routed separately (max 100 m):
Supply line: Core 1, 2 and PE (L / N / PE),
Signal line (screened): Core 3, 4 and 5 (POWER QRI / N / QRI).
Flame Signal
Min. signal voltage: DC 3.5 V (X10-02:6)
Ionisation electrode
The ionisation electrode is connected to input X10-03:1.
If the combustion manager is installed in a control panel, the sensor cable must be
routed separately:
Max. length: 100 m,
Line capacity: 100 pF/m.
Flame signal
Minimum flame signal
Maximum flame signal
29-228
Sensor current
DC 6 μA
DC 85 μA
3 Product description
Display
approx. 50 %
Display
approx. 50 %
approx. 100 %