Use and Care Manual

www.ventilation-system.com
12
TwinFresh Expert
CONNECTION TO POWER MAINS AND CONTROL
DISCONNECT THE UNIT FROM POWER SUPPLY PRIOR TO ANY OPERATIONS WITH
THE UNIT.
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 OF THE UNIT ARE GIVEN ON THE
MANUFACTURER’S LABEL. ANY INTERNAL CONNECTION MODIFICATIONS ARE NOT
ALLOWED AND RESULT IN WARRANTY LOSS.
The ventilator is rated for connection to single-phase AC 100-240 V/ 50-60 Hz power mains. The routing of the power and signal
cables is shown in the «Mounting and set-up» section, page 9.
For electric installations use insulated, durable and heat-resistant electric leads (cables, conductors) with the minimum cross section
0.5 up to 0.75 mm
2
for the power cable and 0.25 mm
2
for the control cables. The cable cross-section is given for reference only. The
signal cable must be shielded. The actual conductor cross-section selection must be based on its type, maximum permissible heating,
insulation, length and installation method.
Use copper wires for all the electric connections!
Connect the unit to power mains via the terminal block installed in the control board in compliance with the wiring diagram and
terminal designation.
Connect the unit to power mains through the external automatic circuit breaker with a magnetic trip integrated into the fixed wiring
system. The circuit breaker trip current must exceed the consumption current of the ventilator. For details, please refer to the table on
page 5.
The ventilator design enables connecting any external controls with a
normally opened contact (NO-contact), such as an external CO
2
sensor,
humidity sensor, relay switch, etc.
When the contacts NO1 and NO2 close the ventilator switches to high
speed.
The ventilators can be connected in series and in parallel with a
central control by the master ventilator.
In case of in series or in parallel connection of several ventilators
power is supplied either from a previous ventilator or from power
mains.
N
L
N
L (~)
N (~)
L
In
Gnd
NO1
NO2
+12V
Power
to the next
ventilator
Input for 0-10 V
analogue sensor
NO contact
of an external control
unit
Power
1~100-230 V
50-60 Hz
Gnd
Out
Control signal output
to the next ventilator
EXTERNAL CONNECTIONS DIAGRAM
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