i-32V5
Air/Water heat pumps wih axial fans
26
5.9
ELECTRICAL CONNECTIONS
Check that the power supply matches the unit’s electric nominal data (voltage, phases, frequency) displayed on the rating plate on the unit’s
side panel. The electric power connections must be made in accordance to the wiring diagram enclosed with the unit and in conformity with
national and international standards (providing general circuit breaker, residual current devices for each line, proper earthing of the plant, etc.).
CAUTION: Before starting any operation, make sure that the power supply is disconnected.
CAUTION: The electric panel is positioned below the cover. Respect the minimum clearances to perform wiring.
CAUTION: The installer is responsible for the disconnection system (e.g. general circuit breaker) upstream of the electrical
connections of the unit.
ATTENZIONE: The supply voltage’s fluctuations cannot exceed ±10% of the nominal value. If this tolerance should not be
respected, please contact our technical department. The power supply must comply with the limits mentioned, otherwise
the warranty will expire immediately.
ATTENZIONE: If the supply cable is damaged, it must be replaced by qualified personnel, in order to prevent any risk.
ATTENZIONE: Any devices placed nearby can cause / suffer electromagnetic disturbances to / from the unit. Be aware of this
risk at the installation site. It is recommended to electrically power the unit with an adequate line and protections and use
an independent cable duct.
ATTENZIONE: The remote control panel is connected to the chiller by 4 cables with a cross-section of 1.5 mm2. The power
cables must be separate from the remote control cables. Maximum distance 50 metres.
ATTENZIONE: The remote control panel must not be installed in an area with strong vibrations, corrosive gases, excessive
dirthy or high moisture. Leave the area near the chiller clear.
5.9.1 Access to the electric panel
The following is the procedure to remove the cover. The images show sizes 14/16 but they also apply to the other sizes.
4. Unscrew the screws which secure the cover. Two on each side of the machine and two which se-
cure the cover to the support of the cable glands. (There is just one fixing screw on the side of the
smaller-sized controllers).
5. Remove the screws fixing the cover of the electric panel and wire to the terminal block.
6. Insert the cables into the PGs provided on the side of the machine to take them outside the unit.
7. Close the electric panel and the cover of the machine by reapplying the screws.
The above-mentioned operations must be carried out with the machine off and pow
-
er disconnected (by means of the specific disconnector applied by the installer).
Operations carried out by qualified personnel.
Remove the cover without removing the support plate of the cable glands.
When the work is finished, close all of the removed covers applying the screws and
gaskets (if included).
5.9.2 Power supply
Electrical connections must only be carried out by QUALIFIED PERSONNEL, in accordance with current regulations.
Make sure to install an adequate ground connection, incomplete grounding can cause electric shock. The manufacturer
cannot be held responsible for any damage caused by failure or ineffective earthing.
