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Disconnect the unit from the power mains prior to any work.
The unit must be plugged into a properly installed power socket with an earthed
terminal.
The rated electrical parameters of the unit are stated on the sticker.
Any tampering with the internal connections is prohibited and will void the warranty.
The unit is designed for connection to 230 V / 50 Hz single-phase AC mains.
Proper connection is ensured by the power cable with a Euro plug supplied by the manufacturer.
The unit must be connected to the power mains through an automatic cut-out switch integrated
into the stationary wiring with a magnetic breaker with the nominal trip current at least equal to the
unit consumption current, refer table 1.
The unit has extra electric connection options. The contact designations are enclosed in brackets
on the X3 terminal block sticker, fig. 8.
connection of the automatic fire-fighting system contact (PK)
connection of the humidity relay/sensor or CO2 sensor contact (H)
While connecting the automatic fire-fighting system contact remove the jumper between the
X3:1 and X3:2 terminals of the X3 terminal block; in case of fire the dry contact breaks the control
circuit from the central fire-fighting board and cuts off power supply to the unit.
The humidity sensor or CO2 sensor is connected to the X3:3 and X3:4 terminals of the X3 terminal
block; if the dry contact is closed, the unit turns to the maximum speed.
Extra contacts must be connected in compliance with the wiring diagram, fig. 8. Route the cable
through a cable sealing gland on the unit top.
While connecting the NC contact to
the re- ghting system remove the
jumper
Fig. 8. External wiring diagram
to the re- ghting
board
X3
ÐÊ
CONNECTION TO POWER MAINS
to the humidity
sensor or CO2
sensor
H
Í
11
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