Electrical connections
Electrical connections – Position the Light Gateway (5) in the housing (4) and close the panel (3). – Pass the BUS cable (8) through the hole (9) on the electrical panel. 3 8 9 4 5 Fig. 80 Fig. 82 – Detach the clips (2) and open the cover (3). – Connect the BUS cable (8) to the Light Gateway (5) respecting the polarity. – Connect the second BUS cable (10) which must be connected to the system interface. 3 5 2 10 8 Fig. 81 Fig. 83 – Install the system interface onto the device (refer to the paragraph "On-board installation"). 44 / EN
Commissioning 6. Commissioning 6.1 Checking for electrical dispersions and gas leakages 6.1.1 Electrical safety checks Upon completing the installation, check that all the power cables have been installed in conformity to the relevant national and local regulations and according to the instructions contained in the installation manual. PRIOR TO THE OPERATIONAL TEST Check the integrity of the earthing circuit. Measure the earth resistance with a visual inspection and with a specific tester. The earth resistance must be below 0.1 Ω. For TT system the earth resistance must be below 15Ω. Please ensure that differential switch is compliant with that ohmic value of earth impedance. DURING THE OPERATIONAL TEST Check for electrical dispersions. During the functional test, carry out a complete electrical check, e.g. with the help of a multimeter, in order to identify any electrical dispersions. If an electrical dispersion is detected, switch off the unit immediately and contact a qualified electrician to identify and solve the cause of the problem. a All electrical connections must be made by an authorised electrician in conformity to the national and local electrical standards. 6.2 Preliminary checks OUTDOOR UNIT – The unit must be positioned on a sturdy and perfectly horizontal base, in a place that is easily accessible for subsequent maintenance operations. – If there are strong draughts, mount a protective screen at a suitable distance. – There must not be any obstacle hindering the flow of air. – The supporting structure must be able to withstand the weight of the outdoor unit. – If the installation site is subject to frequent snowfalls, the outdoor unit must be positioned at least 200 mm above the usual snowfall level. INDOOR UNIT – The unit must be positioned in an enclosed space and in a place easily accessible for subsequent maintenance operations. – The unit must be anchored firmly to the floor or wall. – If the user interface is installed on the appliance, check that the relative humidity in the installation room does not exceed the allowed limit. 6.1.2 Check for gas leakages If a leak detector is used, follow the instructions contained in the user manual of the device. EN / 45
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