Rev. B 08-2017
30
25
50
100
200
V/~/Hz
230/1/50
230/1/50
230/1/50
230/1/50
V/~/Hz
24V
24V
24V
24V
V/~/Hz
230/1/50
230/1/50
230/1/50
230/1/50
V/~/Hz
230/1/50
230/1/50
230/1/50
230/1/50
mm
2
1,5
1,5
1,5
2,5
mm
2
1,5
1,5
1,5
2,5
MTEC.4680.GB-B-1 Operation and maintenance manual GH serie English
GH
Dehumidi
fi
ers for radiant cooling system
Electric data may change for updating without notice. It is therefore necessary to refer always to the wiring diagram
present in the units.
Model
Power supply
Control board
Auxiliary circuit
Fans power supply
Line section
PE section
4.18 Electrical connections
The power supply must correspond to the electric nominal data (tension, phases, frequency) reported on the label in the front panel of the
unit. Power connections must be made in accordance to the wiring diagram enclosed with the unit and in accordance to the norms in force.
Power cable and line protection must be sized according to the speci
fi
cation reported on the wiring diagram enclosed with the unit.
Electric supply must be in the limits shown: in the opposite case warranty will terminate immediately. Before every
operation on the electric section, be sure that the electric supply is disconnected.
The unit can be correctly activated only if the connections of the dehumidi
fi
cation and ventilation remote contacts
(example: hygrostat, microprocessor control, etc) will be made. In this respect, please, follow very strictly what is
reported in the wiring diagram.
FAN SPEED: The unit is provided of a 3-speed fan which is regularly connected to the medium speed. In case
it’s necessary to change the speed, it’s suf
fi
cient to change the connection in the block located in the electrical
board.
FORCING THE UNIT IN ONLY VENTILATION: in the terminal board, it’s available a contact which allow the unit to
work in only ventilation. Closing this contact, only the fan works. The dehumidi
fi
cation mode is not in function.
WZ version units must be connected to an ambient Hygrostat/Thermostat. Failure to use one of the two components
prevents proper operation in different modes.
