Siemens LFS1.11A2

44 ซ.บรมราชชนนี 70 ถ.บรมราชชนนี ศาลาธรรมสพน์ ทวีวัฒนา กทม. 10170.
website: https://www.add-furnace.com/ โทร: 02-888-3472
Line ID: @add11 Wechat ID: add0883001122
Connection diagram and internal diagram
LFS1.2 with QRA2 /
HS
QRA4 / QRA4M /
L
N
QRA10
T / B
12
10
6
1 L
EK
FR
fr1
fr2
HR
LED
hr1
Si
119
7
BCI
2 N
3
0...10 V
ION
LFS1.2...
7782a08/1215
4 5
QRA...
Key
BCI
Communication interface
HS
All-polar main switch
(Burner Communication Interface)
ION
Ionization probe
EK
Lockout reset button (internal)
LED
Internal LED (three-colored)
FS
Flame signal
QRA
UV flame detector
FSV
Flame signal amplifier
RAR9
Photocell detector
FR
Internal flame relay
Si
Internal fuse
fr1
Flame relay NO contact
T/B
Flame signal amplifier test mode switchover
fr2
Flame relay NC contact
(QRA, RAR9: Only required in case of replacement by
HR
Internal auxiliary relay (test mode switchover)
LEC1
hr1
Auxiliary relay NO contact
0...10 V
Voltage output for outputting flame signal strength
+
Terminal labeling on QRA
24/40
Building Technologies CC1N7782en 18.04.2018