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,
cosM>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, cosM>0.8
l PP
2
QX3 DHW pump
230VAC +10% -15%
5mA...1A, cosM>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)
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