Product features: 1. Safety: water and electric separately. 2. Hot water(75 degree) can be provided directly 3. Patent mixed refrigerant using for high temperature&high pressure system. 4. Convenient: intelligent microprocessor with touch screen display. Trouble shoot shows on display board automatically. 5. World famous brand compressor, 4-way valve, motor, pcb, heat exchanger, emerson alco expansion valve use to ensure top quality an high efficiency (energy-saving as much as 75%). 6. Multiple protection function: high pressure, low pressur, overheating, overload anti-freezing, phase sequence, discharge temperature, suction temperature and so on. 7. All weather operation: stable operation without being influenced by weather. 8. Metal case and stainless steel case are available. 9. Refrigerant of r22, r407c, r134a are for optional. 10. Automatically defrosting function included. Technical parameter: Unitsdbt-90wl Heating capacitykw90.00 Heating power inputkw6.45*4 Operating currenta9.90*4 Copw/w3.5 Power supply v/ph/hz380/3/50-60 Rated output water temp. ?c75 Maximum output water temp. ?c80 Compressortypescroll Refrigerant typer22/r407c/r407c/r134a Lengthmm2000 Widthmm1005 Heightmm1975 Unit noise level de(a)70 Net /gross weight kg570/620 Certification cb, ce, emc, rohs, saso, ccc