Uses electronic enlargement valve to precisely Handle the stream of R290 refrigerant into the evaporator as well as a 4-way valve to divert the refrigerant stream with the defrost operation A number of[9] indoor condenser heat exchanger coils. They transfer the heat to the indoor air, or an indoor heating https://purethermal.co.uk/media-news/q4-launch-lithium-large-capacity-r290-ashp-from-pure-thermal-and-enerblue/