1.       free water temperature setting, applicable to diversified projects with flexibleness.

2.       automatic startup as electricity coming, automatic recollection with  electricity cutoff, more reassurance when using the heat pump.

3.       the system hold high-low pressure protection,exhaust temperature protection,current protection and phase sequence protection.

4.       adopt Copeland compressor of  low temperature special for heat pump, which  can be used  at the lowest ambient temperature is -20℃.

5.       easily control by pressing the button.