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 Celsius degree.
5.easily control by pressing the button.