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INSTALLATIoN
electrical connection
Safety extra low voltage
X1.1
+
+
CAN (connection for heat pump and WPE heat
CAN A
-
-
pump extension)
L
L
H
H
X1.2
+
+
CAN (connection for FET remote control and
CAN B
-
-
ISG Internet Service Gateway)
L
L
H
H
X1.3
Signal
1
Outside sensor
Earth
2
X1.4
Signal
1
Buffer sensor (heating circuit sensor 1)
Earth
2
X1.5
Signal
1
Flow sensor
Earth
2
X1.6
Signal
1
Heating circuit sensor 2
Earth
2
X1.7
Signal
1
Heating circuit sensor 3
Earth
2
X1.8
Signal
1
DHW cylinder sensor
Earth
2
X1.9
Signal
1
Source sensor
Earth
2
X1.10
Signal
1
2nd heat generator (2.WE)
Earth
2
X1.11
Signal
1
Cooling flow
Earth
2
X1.12
Signal
1
DHW circulation sensor
Earth
2
X1.13
Signal
1
FE7 remote control / telephone remote
Earth
2
switch / heating curve optimisation / SG Ready
Signal
3
X1.14
Constant 12 V
+
Analogue input 0-10 V
Input
IN
GND
X1.15
Constant 12 V
+
Analogue input 0-10 V
Input
IN
GND
X1.16
Signal
1
PWM output 1
Earth
2
X1.17
Signal
1
PWM output 2
Earth
2
X1.18
+
+
CAN (FES)
CAN B
-
-
L
L
H
H
X1.19
+
+
CAN (connection for heat pump and WPE heat
CAN A
-
-
pump extension)
L
L
H
H
Mains power supply
X2.1
L
L
L
L
N
N
PE
X2.2
L' (power supply
L'
utility input)
L* (pumps L)
L* (pumps L)
www.stiebel-eltron.com
Power supply
L' (power supply utility input)
L* (pumps L)
Mains power supply
X2.3
L
L
N
N
PE
PE
X2.4
L
L
N
N
PE
PE
X2.5
L
L
N
N
PE
PE
X2.6
L
L
N
N
PE
PE
X2.7
L
L
N
N
PE
PE
X2.8
L
L
N
N
PE
PE
X2.9
L
L
N
N
PE
PE
X2.10
L
L
N
N
PE
PE
X2.11
L
L
N
N
PE
PE
X2.12
L
L
N
N
PE
PE
X2.13
L
L
N
N
PE
PE
X2.14
Mixer OPEN
5
N
N
PE
PE
Mixer CLOSE
6
X2.15
Mixer OPEN
5
N
N
PE
PE
Mixer CLOSE
6
Note
For every appliance fault, output X2.10 issues a 230 V
signal.
In the case of temporary faults, the output switches the
signal through for a specific time.
In the case of faults that result in a permanent appliance
shutdown, the output switches through permanently.
Accessories, STB-FB high limit safety cut-out for underfloor
heating systems (optional)
XD01.1
N
L1
2
3
1
2
Netz
f Remove the jumper at XD01.1 between L1 and 2.
f Connect the STB-FB high limit safety cut-out to XD01.1 be-
tween L1 and L2.
HSBB 180 Plus|HSBB 180 S Plus|
Heating circuit pump 1
Heating circuit pump 2
Heating circuit pump 3
Buffer charging pump 1
Buffer charging pump 2
DHW charging pump
Source pump / defrost
Fault output
DHW circulation pump / 2nd heat
source DHW
2nd heat source heating
Cooling
Not assigned
Not assigned
XD01.2
L
L'
1
2
4
EVU
37
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