Connect a relais as follows:
Nc Normally closed contact. Contact will open when status occurs.
C Main contact.
No Normally opened contact. Contact will close when status occurs.
Select the desired status notification (setting) using parameter EP018 and
EP019.
Connecting 0–10 V output
The 0-10 contact can be used to connect a PWM system pump. The
speed of the pump is modulated based on the signal received from the
boiler. Depending on the make and type of pump, the pump can be
controlled by a 0–10 V or a PWM signal.
Connect the system pump controller to connector 0-10.
Select the type of signal that will be sent from the boiler using the
parameter EP029.
Select the type of signal that controls the pump using the parameter
EP028.
Caution
If possible, use the pump modulation signal. This provides the
most accurate pump control.
If the automatic burner unit does not support pump modulation,
the pump will behave as an on/off pump.
5.6.4
The SCB-02 expansion PCB
Fig.56
SCB-02 PCB
AD-3001313-01
C No
Nc
Status A
C No
Nc
Status B
N
L
+
-
0-10
Tout
N
L
N
+
-
0-10
Tdhw
Tflow
R-Bus
The SCB-02 has the following features:
Control of a (mixing) zone for heating (or cooling)
Control of one domestic hot water (DHW) zone
0–10 V output connection for a PWM system pump
Two potential-free contacts for status notifications
Expansion PCBs are automatically recognised by the control unit of the
boiler. If expansion PCBs are removed, the boiler will show an error code.
To resolve this error, an auto-detect must be carried out after removal.
Fig.54
Status notifications
AD-3001312-01
C No
Nc
Status A
C No
Nc
Status B
Fig.55
0–10 V output connector
AD-3001305-01
+
-
0-10
5 Installation
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7734324 - v.03 - 29092020
