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The impeller rotating direction must correspond to each speed in the direction indicated by the
arrow on the product. A centrifugal backward fan unit with an impeller that does not rotate in the
right direction still creates a airflow and a low pressure in the duct. An incorrect rotating direction
can lead to an abnormal overheating of the motor, resulting in its destruction and cancelling our
manufacturer’s warranty.
If the rotating direction is incorrect, cut off the electrical power supply, make sure no power is present.
Contact after-sales service. Do not modify wirings, as this might seriously damages the unit.
While running, make sure that the motor’s absorbed current is not more than 10% above the identity plate
indicated current .
Once the roof fan is installed and the tests successfully completed, present the main points of the operation
and maintenance manual to the user, and explain:
• How to start up and shut down.
• How to change the operating modes.
4.2 Electrical characteristics
Model
Nom P.
(kW)
Nom. C (V)
Nom. I. (A)
230V
Nom. I. (A)
400V
INTZ
Electrical protection
necessary
355
0,70
1 ph. 230 V
3,05
INTZ 1V15
10 A
400
0,72
1 ph. 230 V
3,05
INTZ 1V15
10 A
450
1.24
1 ph. 230 V
5,40
INTZ 1V15
10 A
500
1,70
2 ph. 400 V
3,52
INTZ 1V15
16 A
630
3,16
2 ph. 400 V
6,99
INTZ 1V15
16 A
710
5,91
2 ph. 400 V
12,43
INTZ 1V22
16 A
The short-circuit protection equipment must at least have a "C" tripping curve in accordance with IEC
60898-1.
The power supply is compatible with IT neutral regime, controller capacity : 500nF.
4.3 Wiring of INTZ safety switch
Safety switch delivered factory wired and mounted.
Note: the safety switch is sized to be used in smoke extract application for a 400V three-phases or 230V
single-phase 50/60Hz power supply. The switch is used to isolate the unit from the electrical network in
case of maintenance operations, not to pilot the unit on/off.
Safety switch access
The switch is located next to the controller.
KUBAIR F400 ECOWATT
®
Motor controller
INTZ - Safety switch
VCHV-A - Pressure or airflow, in
COP and CAV units
PTHV-A - Airflow display, in VAV
unit with display