111/171
Siemens Building Technologies Basic Documentation LMU54... / LMU64... CC1P7494en
HVAC Products 9 Connection diagrams 07.11.2002
9 Connection diagrams
9.1 LMU...
Mains connection
Functional earth
Exchangeable fuse
7494a02E/0702
Component terminals connector X11:
Contact signal network
PWM heating circuit pump
Pressure sensor
Temperature sensor
PWM - GND
VDC - IN - GND
+5 V
+26 V D.h.w. flow switch
Flue gas sensor
Boiler sensor
Return sensor
BW1
Mains transformer
High-voltage
ignition
transformer
Connection ignition electrode /
detector electrode with
single-electrode operation
Plug-in space
X50
Plug-in space
X40
X30
Clip-in
AGU2.500
Clip-in
OCI420
Line
GND
U-
In
U-
In
U-
IN
ANI
+5 V
ANI
+5 V
X15X14X13X12
DHW stepper motor control
+UB
PWM
GND
HALL
Fan control
Stepper motor control
for combustion optimization
(+26 V)
HC pressure monitor
GND
IN
AN3 (BW1)*
AN1 (Boiler sensor)
AN6 (water
DHW flow switch
PWM pump
VDC
AN4 (flue gas sensor or BW2)***
AN2 (return sensor or BW2)***
(+5 V)
AN5 (outdoor sensor or BW2)***
AN3 (BW1)*
Prog. digital input (e.g. LP)
Safety shutdown (e.g. GP)
Room thermostat / time switch
Room unit (e.g. QAA73)
13
14
1
2
HC pressure monitor
Mains connection for
clip-in supply
AGU2.500-X52-01
AC 230 V fan motor /
primary transformer
K1 (heating circuit pump)***
K2 (system pump or
prog. output) ***
K3 (diverting valve or
DHW charging pump)***
Ionization probe
(double-electrode operation)
SLT, LT
Fuel shutoff valve
AC 230 V / RAC
External ignition AC 230 V
Burner ground
(with integrated ignition)
L
N
PE
L
N
L
N
L
N
L
N
L**
N
L
L
L
N
L
Operating section (HMI)
AGU2.3xx
Transformer AC 24 V (ext.)
X10-01 X10-02 X10-03 X10-04 X10-05 X10-06
X3-01X3-02X3-03X3-04 X2-01X2-02X2-03X2-04X2-05 X1-01X1-02
1231212121212311212121
212121212121
2
3
1
2
3
1
4
2
3
1
4
5
2
3
1
4
5
6
2
3
1
4
5
6
7
8
9
10
11
12
* BW1 sensor can be connected
to X10 or X11
** Phase in idle position
*** According to parameterization
(integrated in LMU...)
02K12 02K13 02K46 02K09 02K15 02K35
02K3902K1602K0301K03 02K0402K3202K0503K0501K02 03K9802K14
(+) N
( ) L
_
The diagram shows the maximum functionality of the LMU... system. For the specific scope of functions, refer to the relevant version / configuration !
Siemens designation
Lumberg designation
To Next Page
Loading...
