29
GB
Connection terminals XX and XX.1
L-N-PE
Power supply boiler
+10% -15% 50Hz Fuse 10A
1-2
Power supply EM Clipln
11-16
Lockout input (X18)
230VAC, 5mA...1A,
cos
M
>0.6
7-9
Boiler pump
230VAC, 2A max.
129-128
PWM boiler pump
128-127
PWM EM Clipln load feedback
115-114
LPB-bus
XX.1
Earth terminal
Connection LMS (PCB)
QX2
Free programmable
(default Alarm)
230VAC +10% -15%
5mA...1A, cos
M
>0.8
l
PP
2
QX3
DHW pump
230VAC +10% -15%
5mA...1A, cos
M
>0.8
l
PP
2
AUX 2
230VAC
5A
H6
Interlock input
BX2
Header temp. sensor
B3/B38
DHW thermostat or DHW
temp. sensor (parameter)
B9
Outside temp. sensor
H1
External influence
0.15 - 10VDC
H5
Boiler enable
X11
OCI345
X7
BSB bus room unit QAA75
X50
BSB-EM Clipln
Components
X2.1
Gas Valve
Op. 01
Load feedback
(optional)
X2.3
Ignition transformer
Op. 02
Alarm
(optional)
X2.3.1
Ionization electrode
Op. 03
Zone 2
(optional)
X3
Ignition electrode
Op. 04
Zone 1
(optional)
BX3
Flue gas temp. sensor
Op. 05
Unit QAA75
(optional)
B9.1
Resistor
PCB
PCB LMS14 Card
H3
Min. water pressure sensor
F. 01
Fan: Type 50
B7
Return temp. sensor
F. 02
Fan: Other types
H7
Thermostat
Dp. 01
Display
B2
Row temp. sensor
P.
Boiler pump
S1
On / off switch
MR1
Pump relay
1 When connecting, remove
jumper or resistor.
2 Optional, see “Accessories”.
3 When connecting a thermostat,
high quality contact material is requi-
red. (i.g. gold-plated contacts).
Low voltage contacts according to
standards and directives for SELV.
Cable cross-sectional area for exter-
nal sensors. See table.
Ø
ܿ
0.25 mm
2
20 m
0.5 mm
2
40 m
1 mm
2
P
1.5 mm
2
120 m
Installation
Wiring diagram - Boiler (Legend)