... R410a, R290, R134a, R22Characters:Anti-freeze thermos Water Source Heat Pump use underground water or circulated water or brine as main ... the user side is complete also with expansion vessel, water pump and water flow switch.ELECTRIC PANELconsists of:Compressor contactor,Compressor ... supply only. Suitable for installing in outspace such as roof, floor and porch, left off the boiler room and the special ...