Stulz Free-Air-3-IN, Руководство по эксплуатации, Страница: 20 / 31

20
Free-AIr-3-IN
OUTDOOR
INDOOR
50
50
20
M6
M6
20
INDOOR OUTDOOR
EN/02.2018 © STULZ SpA – all rights reserved
5.2. electrical connections
DANGer
It's absolutely necessary, before making any connections, to use a suitable tester to check the
voltage supply. 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 omni-pole automatic switch with
capacity as specified on the technical data plate in order to be able to perform maintenance on
the unit in the absence of electricity.
The ON/OFF key on the C102 keypad is only used for the unit stand-by. Therefore, it must 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).
Any signal cable (temperature probes, alarms, keypad) longer than 3 m must be screened
against electromagnetic disturbs.
Electrical connections have to be carried out only by authorized technical personnel.
Electrical wiring of this unit must be executed in compliance with following norms:
• Machinery Directive (2006/42/EEC – 98/37/EEC)
• Low voltage (2006/95/EEC)
• Electromagnetic compatibility (2004/108/EEC)
• National rules for technical plants
1. Check the supply voltage and verify if it is within the admitted range of the unit.
2. Interrupt power supply before working on the system: make sure that the main switch is turned
off and the system is isolated from power mains; make sure also that all power switches and
control fuses in the electric system have been turned off.