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2.3 Connections
24 V
L1 L2
L1'
L2'
TB
1
2
3
15
16 17
No.
Connections
DEU
7
Temperature limiter
ENG
4
Protective
conductor 1 and 2
FRA
5
Mains connection N/L Only 230 V version: Connection for mains supply
NDL
6
Output 230 V
ITA
8
Pump
ESP
9
Boiler
10
ECO
11
Change over
12
Dew point sensor
13
syBUS
14
Actuators
15
RJ45 connection
(optional)
16
RJ12 connection
17
microSD card slot
26
230 V
pump
boiler
ECO
CO
H %
pump
1
2
1
2
1
2
1
2
1
2
1
2
N
L
N
L TB
4
5 6 7
8
Function
Connections for temperature limiter for the protection of sensitive surfaces,
to be provided by the customer (optional)
Only 230 V version: Protective conductor connections
Only 230 V version: Optional assignment for a direct energy supply of
the pump
Pump activation connection
Boiler control connection, or output for CO pilot function
Potential-free input for the connection of an external timer
Potential-free input (according to SELV) for an external change-over signal
Potential-free input (according to SELV) for dew point sensor
Connects several base stations in order to exchange global system
parameters
6 to 18 connections for thermal actuators
Ethernet interface for the Integration of the base station into the home
network
Connection for active antenna
Allows the introduction of firmware updates and individual system settings.
boiler
ECO
CO
H %
HZ 1
HZ 2
System BUS
1
2
1
2
1
2
1
1
2
2
1
2
1
2
1
24V A
9 10 11 12
HZ 3
HZ 4
HZ 1
HZ 2
HZ 5
HZ 3
2
1
2
1
2
1
2
1
2
1
2
1
1
2
2
1
1
B GND
13
14
HZ 4
HZ 6
HZ 7
HZ 8
HZ 5
2
2
1
1
2
2
1
2
1
2
1
2
1
2
1
2
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