Operation and Maintenance Manual, OnyX Sky Heat Recovery Units, 2022/01
Frapol Sp. z o.o. reserves the right to introduce changes without any prior notice.
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5.6.4
Electrical Connection
The controller is powered with 230 V~ / 50 Hz voltage
–
it is connected to the following terminals: L, N, PE.
The installation should:
•
use a three-wire cable with a protective conductor, and
•
be carried out in accordance with applicable laws.
DANGER
If the controller is switched off using the keyboard, dangerous voltage may occur at the terminals of
the controller.
Before any installation work, it is essential to disconnect power supply and make sure that there is no
dangerous voltage in the cables.
DANGER
Connecting the mains voltage to the digital input terminals and to the analogue and transmission
outputs will damage the controller and pose a risk of electric shock.
DANGER
Connect the protective conductor of the power supply cable to the PE input of the module, the housing
terminal and the protective conductors of the connected devices.
DANGER
All peripheral devices must be connected by the installer, in accordance with the applicable
regulations. Follow the safety precautions for electric shock.
NOTE
The controller is equipped with screw-in splice connectors adapted for accepting cables with a sleeve
tip, plugged in sockets.
Cable ends, especially those transferring mains voltage, must be protected against fraying with insulated
ferrules, for example. Use the cable diameters and tightening torques for screw terminals specified in the
technical data.
NOTE
When using a ground fault interrupter in the supply system, it is recommended to use the B-type
circuit breaker
Protection of cable ends: a) correct, b) incorrect.
Insulated ferrule