Air Renewal System ec fan 355mm Primary Air Central Ventilation System

1． Enable the selection of different power levels thus to get the best match of price and performance according to customers’load requirements

2． As the rotor is mounted to interior, the external rotor fan is more compact constructed, smaller and easy to abstract heat., thus ensure to maximum the reliability of fan operation,

Sustainable speed control benefits to achieve low operating costs, reduce CO2 emissions protect the environment, enable the direct, simple communication between the host controller and the system

3. Our Service

Safe-common necessity of company and customers

Excellent –worker and product

Efficiency-worker and product

Environment-enterprise and society

OFAN provides the most comprehensive services, includes: product diversification, against the clock delivery, documents support, and technical consulting service. “Customer is partner” is key to our success; ”Win the contract for customer” is our ultimate goal.

4. Protection: over voltage, over temperature, over current, phase loss detection, communication failures.

5. The basic interface: 0-10V/PWM, RS485/Modbus, 4-20Ma

6.The basic parameters of field programmable: Maximum speed, minimum speed, maximum power, maximum current,resonance avoid

7. Constant air pressure controlling function

8. Embedded design

9. Electro magnetic compatibility (EMC)

10.The safety grade of this series if IP54 and the insulation classes are available among B,F and H.

11. The products have got the CCC certificate in China and CE approval in Europe.

The GL Gamma EC Series of centrifugal roof mounted exhaust fans incorporate the latest state of the art, energy saving EC motor technology.
They feature integrated infinitely variable speed control and eliminate the need for external VSDs, current overloads and motor phase protection.
The compact and low profile GL Gamma EC Series is a simple "plug and play" system which means installers do not need to have specialised control programing knowledge.
Matching sensors can easily be connected to monitor the ambient conditions in a space and provide real time feedback to the fan. The fan's on-board microprocessor can adjust the speed and therefore modulate the ventilation rate to match the specific requirements of the area.
They are suited to ducted vertical exhaust applications, include a removable windband that provides easy access for cleaning and maintenance, and are available in 315, 355, 450, 560 and 630mm fan sizes.