10 KSB
CONNECTION TO POWER MAINS
THE FAN MUST BE CONNECTED TO THE POWER MAINS ONLY BY QUALIFIED PERSONS
HAVING BEEN MADE FAMILIAR WITH THE PRESENT OPERATION MANUAL. THE UNIT IS
INTENDED FOR CONNECTION TO AC MAINS SUPPLYING THE VOLTAGE COMPLIANT WITH
THE TECHNICAL SPECIFICATION CHART. CHECK THE ENTIRE POWER CORD LENGTH FOR
CHOKING. DO NOT SWITCH ON THE UNIT IF THE POWER CORD IS DAMAGED. DISCONNECT
THE FAN FROM THE POWER SUPPLY PRIOR TO ANY WORK ON THE UNIT! THE NOMINAL
ELECTRICAL PARAMETERS OF THE UNIT ARE GIVEN ON THE MANUFACTURER’S LABEL.
ANY TAMPERING WITH THE INTERNAL CONNECTIONS IS PROHIBITED AND WILL VOID THE
WARRANTY.
The fan is intended for connection to a single-phase 230 V/50 Hz AC mains.
Depending on the conguration there are two possible options for fan connection to the power mains:
via the plugged power cord;
via the junction box.
The fan connections (cables and wires) must be durable, insulated and heat-resistant. The external lead-in
must be equipped with an automatic cutout switch built into the stationary wiring to disconnect all the power
mains phases. The external switch position must ensure free access for quick power-o of the unit.
The recommended automatic switch nominal current is 2 A for for KSB 315 and 1 A for all other modications.
The recommended minimum conductor section is 0.75 mm2. 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:
Undo the screws securing the upper casing panel (see Fig. 4.1);
Remove the upper panel (see Fig. 4.2);
Run the power supply cable through the sealed lead in the side wall; Strip the wire tips to 7 - 8 mm;
Connect the wires to the terminal block in accordance with the electrical connections diagram and
the terminal markings (see Fig. 5). To do this 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 the junction box.
In case of the fan connection to the power mains via the junction box the connection diagram and the
terminal markings also apply (see Fig. 5).
