Description

Patent no.*********3  Ratio control method of pressure for heating and cooling system.

Patent no.*********7 control method of circulation pump for heating.



FEATURES

1) Individual inverter control function : Number of revolution is controlled by inverter. (Possible to control 3 units of inverter.)

2) Selection of operation mode : Setting operation method depending in accordance with use (Heating circulation)

3) Strong control function : Controlling differential pressure, temperature and pressure

4) Automatic restoration operation from power cut : It operates automatically by memorizing previous operational condition when power is connected again.

5) Alternating operation : Alternating operation is achieved by setting operating time of main pump. 6) Broken pump skips its operation : When specific pump is broken down, system is operated normally by skipping its operation.

7) Water shortage protecting operation : Idling is prevented by water shortage sensor.

8) Warning indication : Warning is indicated in case of inverter over current, water shortage, high & low pressure and abnormality of pressure sensor

9 Saving operation data : Operation data is saved and indicated by built-in memory chip.

*0) Operation by communication : Inverter of each pump transmits/receives data by communication. *1) Emergency operation : When pressure transmitter is broken down, it is operated manually by force on operation panel.

*2) Central surveillance : Operational condition is transmitted by communication by means of central control board.

*3) Self diagnosis function Reliability is raised by continuous surveillance of breakdown and operational condition.

*4) Built-in MICOM Strong CPU of *6 bit being equipped inside, it carries out faster order.



For more information, please feel free to contact us.

HNL GLOBAL GROUP