... Durable,Economical,High-COP CE,RoHS approval DC INVERTER R410A AIR TO WATER 20KW (split type)Inside ... plate heat Exchanger and inside connectionOutside unit with DC inverter R410a, electrical expansion valve, compressor heater, bottom ... 78CompressortypeScrollQuantity2(one is on/off type, Another is inverter)BrandHitachiOperation ambient range°C-20- 43Sound pressure ...