10
KSB
CONNECTION TO POWER MAINS
DISCONNECT THE FAN FROM POWER SUPPLY PRIOR TO ANY ELECTRIC INSTALLATION
OPERATIONS.
INSTALLATION SHALL ONLY BE PERFORMED BY A PROFESSIONAL ELECTRICIAN QUALIFIED
FOR UNASSISTED OPERATIONS WITH ELECTRICAL INSTALLATIONS UP TO 1000 V AFTER
CAREFUL STUDY OF THE PRESENT USER’S MANUAL.
THE RATED ELECTRICAL PARAMETERS ARE STATED ON THE RATING PLATE.
ANY TAMPERING WITH THE INTERNAL CONNECTIONS IS PROHIBITED AND WILL VOID THE
WARRANTY.
The fan is rated for connection to single-phase 230 V/50-60 Hz AC mains.
Depending on the fan configuration there are two possible options for power mains connection:
via the plugged power cable;
via the terminal box.
For electric installations use insulated, durable and heat-resistant electric leads (cables, conductors).
Connect the fan to power mains through the external automatic circuit breaker installed at the power input
and integrated into the house cabling. The circuit breaker location must ensure free access for emergency
shutdown of the fan.
The recommended trip current of the circuit breaker is 2 A for KSB 315 and 1 A for all other modifications.
The recommended minimum conductor cross section is 0.75 mm
2
. The conductor selection shall be based
on the maximum permissible wire heating depending on the wire type, its insulation, length and installation
method (i.e. overhead, in pipes or inside the walls).
The power mains connection steps are as follows:
1. Internal fan connections:
Remove the screws securing the casing bottom panel, Fig. 4.1.
Remove the casing bottom panel (see Fig. 4.2);
Route the power supply cable through the sealed electric lead-in the side wall.
Strip the wire tips for 7 - 8 mm.
Connect the wires to the terminal block in accordance with the electrical wiring diagram and the
terminal designations as shown in Fig. 5. Insert the wires into the respective terminals until the insulation stops
against the metal part and secure the wires with clamping screws.
Assemble the fan.
2. Connection via a terminal box.
In case of the fan connection to the power mains via a terminal box use the same wiring diagram and
terminal markings, see Fig. 5.
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