... energy efficiency ratio, energy-saving, widely used. (2)Mainly applied to house,home, villas etc. 1. ... Occupy small area,easy installation and maintenance;2.Electricity will not contact water directly during heating process ... VL-RN020FRated imput power 1.75kwMax imput power 2.45kwRated current 8.3AMax input current 11.5AWater ... 12.7Size of liquid pipe connect(mm) G1/2N W 39kgTank volumn 150-320L