DeDietrich C 330 Series Installation, User And Service Manual page 38

6 Installation
Fig.25 Mains connection
Mains
N L
2
3
4
38
The boiler has phase detection. The boiler is completely pre-wired. The
boiler is suitable for a 230 VAC/50 Hz supply with live/neutral/earth. Other
connection values are only acceptable if an isolating transformer is
installed. Connect the wires of the mains lead to the correct terminal block.
This can be found on the left underneath the MAINS connector. (The
mains lead is not supplied).
1
ON/OFF
PUMP
N L
OT BL
The boiler has several control, protection and regulation connection
options. The heat output of the boiler can be controlled as follows:
Modulating control: the output varies between the minimum and
maximum value on the basis of the value defined by the controller.
Analogue control: where the heat output or the temperature is controlled
by a 0-10 V signal.
AD-0000498-01
(Standard with DIEMATIC iSystem – only available in combination with
the control PCB SCU-05 or IF-01 with IniControl.)
On/off control: where the heat output modulates between the minimum
and maximum value on the basis of the flow temperature set in the
boiler.
Danger of electric shock
The following components of the boiler are connected to a 230 V
power supply:
(Electrical connection of) circulation pump on connector
(Electrical connection of) combined gas valve unit
(Electrical connection of) fan
The majority of components in the control unit
Ignition transformer
(Connection of) supply cable
Caution
Observe the polarities shown on the terminals: live (L), neutral (N)
and earth .
1 Fuse (F1)
2 Pre-wired in the boiler (PW)
3 Main fuse (F2)
4 Three-wired mains lead (M)
Caution
Always order a replacement mains lead from De Dietrich. The
power supply cable should only be replaced by De Dietrich, or
by an installer certified by De Dietrich.
In the case of a fixed connection of the mains lead, you must
always install a main bipolar switch with a contact gap of at least
3 mm.
Important
The boiler has a unique boiler code. This, together with other data,
including the boiler type, counter readings, etc. is stored in what is
known as a PSU that belongs with the boiler. If the control unit is
replaced, the counter readings remain stored in it.
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