7
Electrical Supply Sizing
The following table shows the specification for a boiler installed on three phase single phase N~.
The following table shows the specification for a boiler installed on single phase 230V~ supply.
*
The standard configuration of the boiler only allows a maximum of 12kW when connected SINGLE-PHASE
230V~.
Connection to Boiler
WARNING:
Touching live connections can cause serious personal injury.
Before establishing a mains connection switch off the power supply. Secure the power supply against being
switched on again. Mains connection terminals remain live even if the on/off switch is turned off.
The boiler is delivered ready for operation on 3x400V three phase supply. For operation on 230V single phase the
bridging connection supplied must be connected across the terminals of the connection block as shown.
The terminal connection block is accessed after removing the boiler front panel . The supply cable should be safely
routed to this point through the cable entry point on the right hand bottom of the boiler.
CAUTION: A mains voltage at the incorrect plug terminal can destroy the electronics.
Make sure the connectin cables are securely fastened to the plug terminals.
i
Rated output of boiler
4kW 5kW 6kW 7kW 8kW 9kW 10kW 11kW 12kW 13kW 15kW 18kW
Supply current
13.0A 13.0A 13.0A 13.0A 13.0A 13.0A 21.7A 21.7A 21.7A 21.7 21.7A 26.0A
RCD rating
16A 16A 16A 16A 16A 16A 25A 25A 25A 25A 25A 32A
Minimum cable size
4mm 4mm 4mm 4mm 4mm 4mm 6mm 6mm 6mm 6mm 6mm
10mm
Rated output of boiler
4kW 5kW 6kW 7kW 8kW 9kW 10kW 11kW 12kW 13kW 15kW 18kW
Supply current
17.4A 21.7A 26.1A 30.4A 34.8A 39.1A 43.5A 47.8A 52.2A 56.5A* 65.2A* 78.3A*
RCD rating
20A 25A 32A 32A 40A 50A 50A 50A 63A 63A* 80A* 80A*
Minimum cable size
4mm 6mm 10mm 10mm 10mm 16mm 16mm 16mm 16mm 25mm 25mm
35mm
Summary of Contents for MATTIRA MAS18
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