7
OPERATING
PROCEDURES
The fan is intended for connection to a 220...240 V 50 Hz AC Mains and allows continuous
operation without disconnection from the power mains.
The fans are suitable for operation at ambient temperatures ranging from +1°C to +45°C.
The fan must be grounded.
Protection Class - IP55.
ELECTRONICS
OPERATION
ALGORITHM
Basic Models:
Two- and Three-Speed Fans.
The speed is set using an external speed selector.
Note: Options T, TR, I, F and H are available with two-speed fans only.
T - with a timer:
Depending on the connection pattern the fan remains off or constantly operates at speed 1.
When turned on with an external switch the fan switches to speed 2 after 50 second delay.
Following turning-off the fan continues running at speed 2 for 6 minutes and then reverts
to the initial state automatically.
TR - with an adjustable timer:
Depending on the connection pattern the fan remains off or constantly operates at speed 1.
Following activation with an external switch and on
elapsing of the timer delay which can be set within the range from 0 to 150 seconds the fan
switches to speed 2.
Following turning-off the fan continues at speed 2 for an interval from 2 to 30 minutes and
then reverts to the initial state automatically.
The fan operation duration and speed 2 turn-on delay are set by the built-in regulator.
VNVN
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