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en
15
E-Tech W
: 664Y6500 • B
EN
FR
NL
ES
IT
DE
PL
RU
INSTALLATION
SIZING OF SUPPLY WIRES
The supply wires are sized depending of the type and current of the MCB. This last firstly sized depending
of the nominal current of the boiler. The admissible current of the supply wires depends of the ambient
temperature, the section and length of the wires, the wires insulation, the wires canalisation, the
mounting and the environment.
The following values are given for information for an ambient temperature of 30°C and a maximal
length of 5 meters. In all the cases, the installation must be in accordance with the current IEE Wiring
Regulations.
Nominal section
(mm)
Nominal current of the MCB
(A)
1.5
16
2.5
25
4
32
6
40
10
63
16
80
1-2 : Time clock or controller supply (optional)
3-4 : DHW kit (optional)
5-6 : Stop Bridge or time clock switch control (optional)
7-8 : Room thermostat (optional)
9-10-11 : Heating pump
12-13 : Relay K3 deactivated
14-15 : Relay K4 deactivated
Models :
• E-Tech W 28 - 36 kW Tri Phase
TB1
