9. WIRING SYSTEM
Electrical installation and connection of the power supply to the unit must be carried out in
accordance with relevant construction standards and regulations.
Electrical connections to the unit can only be carried out by an authorized electrician
familiar with the instruction manual.
Before connecting make sure that the voltage and frequency rating of the power supply
and protection ratings are in accordance with the information given on the unit’s data
plate. Otherwise, do not connect the unit.
The unit’s user shall be responsible for electromagnetic compatibility of the whole
system to the applicable local regulations.
When operating on conductive elements or electrical wires, the operator always must be
accompanied by other person, who would cut the supply off in case of emergency.
Electrical equipment should be inspected on regular basis: fix loosen connections,
replace damaged wires and cables immediately.
The units are fitted with 1-phase fans (1~230V/50Hz) with internal thermal contacts Tk (lead out to
the box or permanently connected to the motor circuit). The electrical connection of the fan should
be carried out taking into account the service switch (WS), as well as the overload and short-circuit
protection inside the power supply/control box.
Failure to provide required motor protections and connect the Tk thermal contact within
the control circuit will render the warranty void.
Insert the power cord of the fan into the terminal box and fix it on protective grate or supports of
the fan with cable ties. The fan thermal contact should be connected to the control circuit for the
fan supply.
Electrical connection of the motor must be in accordance with electrical diagrams provided in the
terminal box.
Example wiring and control diagrams for the units are given in figs. 1 to 3.
Fig. 1. Connection label for BRAVA unit motor
