See
Manual for the control panel.
Connection options for the SCU-S05 control PCB
The extended SCU-S05 control PCB is available as an accessory.
Important
On removing this PCB, the boiler will display an error code. To
prevent this error, an auto-detect must be carried out after
removing this PCB.
See
Manual for the control panel.
Connecting the flue damper (FgV)
Not applicable.
Connecting the hydraulic valve (HdV)
In a cascade configuration, a hydraulic valve prevents heat loss in the
system when the boiler is not running.
1. Connect the hydraulic valve to the HdV terminals of terminal strip.
2. Change the hydraulic valve running time with a parameter setting.
See
Manual for the control panel.
Connecting the external gas valve (EgV)
DIEMATIC iSystem: This function is available as standard.
IniControl: If there is a heat demand, an alternating voltage of 230 VAC, 1
A (maximum) becomes available at the EgV terminals of the connector to
control an external gas valve.
Connecting a shunt pump
If required, a shunt pump may also be installed on the Pump terminals of
the connector. Only an on/off pump can be controlled. The maximum
power consumption is 300 VA. The pump is activated for certain
blockages.
See
Manual for the control panel.
Operation signal and error signal (status)
DIEMATIC iSystem: Connect to the A.Tel output of the boiler.
IniControl: The choice of an alarm or operation signal can be set on
connectors X4 or X5 using a parameter setting.
See
Manual for the control panel.
Fig.35 SCU-S05 control PCB
AD-0000508-01
X2
SCU-S05
X1
X3
X7X6X4 X5
N L
N
L
EgV
N L
EgV
N L
HdV
N L
HdV
N L
FgV
FgV
X9
X8
+0 S
+0
Wps
S
Gps
Gps
VPS
VPS+0
+0
+0
+0
Ctrl0-10
Pump
N L
N
Pump
L
NoNc C
NoNc C
Status
NoNc C
NoNc C
Status
Tout
Tout
Fig.36 FgV connection
AD-0000546-01
N L
N L
FgV
FgV
Fig.37 Connecting the HdV
AD-0000547-01
HdV
N L
HdV
N L
Fig.38 EgV connection
AD-0000548-01
EgV
N L
EgV
N L
Fig.39 Connecting the pump
AD-0000549-01
Pump
N L
N
Pump
L
Fig.40 Status of connections
AD-0000550-01
NoNc C
NoNc C
Status
NoNc C
NoNc C
Status
6 Installation
7600532 - v.11 - 13122018 43
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