Roof Mounted Fans CRVB ECOWATT PLUS Series – Vertical discharge

Centrifugal roof mounted fan in vertical discharge format fitted with:
– EC external rotor motor.
– Centrifugal backward curved impeller.
– Steel finger guard.
– Base manufactured from galvanized sheet steel.
Cowl manufactured from spun aluminium with very low profile design.
– ON-OFF electrical isolated switched.

And supplies with integral control to enable the fan operating in 4 different modes:
– Constant pressure mode.
– Constant volume mode.
– Proportional mode.
– Min-max mode.

Integrated control
– Possibility to connect up to 32 fans together to design a fan network which can be adjusted and controlled with only one programming device.
– 2 analogue inputs, 0-10V or 4-20mA.
– 1 digital input (Night position – min-max operating mode).
– Main supply: 1~230V±15% 50/60Hz.
– Programming device (PROSYS), to adjust settings, as accessory.

Constant pressure operating mode
– Minimum fan speed between 0-50%.
– Maximum fan speed between 50-100%.
– Night position adjustable between 25-100% of the pressure in high speed.

Constant volume operating mode
– Minimum fan speed between 0-50%.
– Maximum fan speed between 50-100%.
– Night position adjustable between 50-100% of the volume in high speed.

Proportional operating mode
– 2 analogical inputs 0-10V or 4-20mA.
– The control operates in function of the maximum demand parameter.
– Minimum fan speed between 0-50%.
– Maximum fan speed between 50-100%.
– Alarm relay output.

Min-max operating mode
– Function of the contact position connected to digital input, the fan runs at high speed or at low speed.
– Minimum fan speed between 0-50%.
– Maximum fan speed between 50-100%.