ACV E-tech W 09 Installation, Operating And Servicing Instructions page 14

electRIc connectIon
• This appliance must be permanently connected to fixed wiring and must be earthed.
• The wiring must be carried out by a competent person and in accordance with the current IEE Wiring Regulations.
• Isolation device must be provided with a minimum contact clearance of 3 mm.
• The MCB must be readily accessible and adjacent to the appliance.
w
E-Tech 28 Tri
power supply
3 x 400 v
The safety contactor is
not supplied by ACV
The safety contactor must be installed,
outside the boiler and according to the
local regulations.
w
E-Tech 36 Tri
power supply
3 x 400 v
The safety contactor is
not supplied by ACV
The safety contactor must be installed,
outside the boiler and according to the
local regulations.
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 xires 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
664Y4700 • D
INSTALLATIoN
L3 L2
L3
(mm)
1.5
2.5
4
6
10
16
L1 N
L2 L1 N
Nominal current of the MCB
EN • 14
1 3
2 4
1 3 1 1 1 1 1
32A 32A 32A 32A 32A
2 4 2 2 2 2 2
L1 L2
(A)
16
25
32
40
63
80
1
32A
2
L3