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AIR BOOSTER 2
EN/10.2018/IT30I © STULZ SpA – all rights reserved
4. Push the guide vanes back in their position so that the fins are locked in the desired position.
5. Restore the grille to its original position
7.2. Electrical Connections
DANGER
It's absolutely necessary, before making any connections, to use a suitable tester to check the
supply voltage. This must be the same as the voltage indicated on the technical data plate.
The user must furnish and install, upstream from the unit, an isolating switch with pre-fuse and
capacity as specified on the technical plate in order to be able to perform maintenance on the
unit in the absence of electricity.
The ON/OFF-key on the unit is only used for the unit stand-by. It must therefore not be
considered as a safety element to perform maintenance on the unit. Maintenance must be done
after disconnecting the power supply of the unit (see note above).
Electrical connections may only be performed by authorised technicians.
The system must be connected to an efficient earth circuit.
The unit must be electrically connected in compliance with the regulations at paragraph
"Introduction" and national regulations for technical systems.
• Check that supply voltage and frequency are compatible with those for the unit.
• Interrupt both main power and auxiliary power before working on the system.
• Select connection cables (not supplied) according to EN60204-1 Standards.
• Open the electrical box by undoing its fastening screws.
• Check that power cables are installed with a sufficient distance from alarm cables, communication
and monitoring cables.
• On the main power supply line, install an omnipolar circuit breaker, please refer to the electric
diagram on part 2 manual. Size of main switch must be determined according to the maximum
current consumption of the components.
• To make electrical connection of power supply, use cables with section suitable to the power
