Technical data

102
CTC EcoZenith i550 Pro
For the installer
16. Electrical installation
This chapter describes how the various electrical components are connected
in line with the designations reproduced in schematic diagrams and wiring
diagrams.
Installation and connection in the EcoZenith must be undertaken by an
authorised electrician. All wiring must be installed according to applicable
regulations. An omnipolar safety switch should be installed. The EcoZenith is
factory set to (3 + 6) + (3 + 6) kW power output.
An additional 9 kW electric heater is available as an accessory. Electrical
connections are made behind the product’s front panel. Undo the screws on
the front (4 screws), bend out and put the front to one side (disconnect any
network cables on the front printed circuit card for easier access). The terminal
blocks and the earth, neutral and phase terminals are located on the circuit
card. Connection cables are inserted in the cable ducts on the unit’s top cover,
which exit at the same height as the bottom of the electrical connections box.
It is important to keep heavy current and extra low voltage cables
apart in order to avoid interference problems; this applies outside the
product also.
• Heavy current power cables must be routed in the cable duct in the
insulation on the top of the unit and on the right side of the unit in the
space between the side insulation and the top insulation (marked with
broken lines).
• Extra low voltage cables are to be routed on the left side of the unit in
the space between the side insulation and the top insulation (marked
by a dotted line).
For higher currents and thicker cables, replace the blanking plug (see
drawing) with an appropriate cable gland with strain relief.
Extra low voltage
10V/sensor
Heavy current
230/400V
Low voltage
Blanking plug
!
It is important to
keep heavy current
and extra low volt-
age cables apart in
order to avoid inter-
ference problems;
this applies outside
the product also.