INsTALLATIoN
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41
EN
GL
ISH
Power supply
D
00000
88
85
9
XD03
Power supply (mains)
L', L, N, PE
WW
DHW
The signal for DHW heating can be taken from the "WW" terminal.
When DHW heating is active, 230 V is applied to the terminal.
10.6.3 Connecting external components
WARNING Electrocution
Only components that operate with safety extra low
voltage (SELV) and that ensure secure separation from
the mains voltage supply may be connected to the low
voltage terminals of the appliance.
Connecting other components can make parts of the ap-
pliance and connected components live.
f
f
Only use components which have been approved by
us.
!
Material losses
Before connecting the control voltage to the function
module terminal area, you must have connected the XD05
heat pump bus cable connector and the XD01 heat pump
power supply to the heat pump control panel (see chapter
"Specification / Wiring diagram").
X2.2 X2.3
X2.4
X2.5
X2.6
X2.7
X2.8
X2.9
X2.10 X2.11 X2.12 X2.13
X2.14
X2.15
X1.1
CAN A
X1.19
CAN A
X1.18
CAN B
X1.17
X1.16
X1.15
X1.14
X1.13
X1.12
X1.2
CAN B
X1.3 X1.4 X1.5 X1.6 X1.7 X1.8 X1.9 X1.10 X1.11
X2.1
D
00000
71
84
1
safety extra low voltage
X1.1
CAN A
+
-
L
H
+
-
L
H
CAN (connection for heat pump and WPE heat
pump extension)
X1.2
CAN B
+
-
L
H
+
-
L
H
CAN (connection for FET remote control and
ISG Internet Service Gateway)
X1.3
Signal
Earth
1
2
Outside sensor
X1.4
Signal
Earth
1
2
Buffer sensor (heating circuit sensor 1)
X1.5
Signal
Earth
1
2
Flow sensor
X1.6
Signal
Earth
1
2
Heating circuit sensor 2
X1.7
Signal
Earth
1
2
Heating circuit sensor 3
X1.8
Signal
Earth
1
2
DHW cylinder sensor
X1.9
Signal
Earth
1
2
Source sensor
X1.10
Signal
Earth
1
2
2nd heat generator (HG2)
X1.11
Signal
Earth
1
2
Cooling flow
X1.12
Signal
Earth
1
2
DHW circulation sensor
X1.13
Signal
Earth
Signal
1
2
3
FE7 remote control / telephone remote
switch / heating curve optimisation / SG Ready
X1.14
Constant 12 V
Input
GND
+
IN
Analogue input 0-10 V
X1.15
Constant 12 V
Input
GND
+
IN
Analogue input 0-10 V
X1.16
Signal
Earth
1
2
PWM output 1
X1.17
Signal
Earth
1
2
PWM output 2
X1.18
CAN B
+
-
L
H
+
-
L
H
CAN (connection for FET remote control and
ISG Internet Service Gateway)
X1.19
CAN A
+
-
L
H
+
-
L
H
CAN (connection for heat pump and WPE heat
pump extension)
Mains voltage
X2.1
L
L
N
N
PE
PE
L
L
N
N
Power supply
X2.2
L' (power supply
utility input)
L* (pumps L)
L'
L* (pumps L)
L' (power supply utility input)
L* (pumps L)
X2.3
L
N
PE
L
N
PE
Heating circuit pump 1
X2.4
L
N
PE
L
N
PE
Heating circuit pump 2
X2.5
L
N
PE
L
N
PE
Heating circuit pump 3
X2.6
L
N
PE
L
N
PE
Buffer charging pump 1
