Product features:  1. Safety: water and electric separately.  2. Hot water ( 55° c ) an be provided constantly even ambient temperature down to -25° c. 3. Evi special compressor of copelnd, sanyo or hitachi will be used, relibale quality with high performance. 4. Auxiliary eletric heater, insulation materials used for compressor protection. 5. Convenient: intelligent microprocessor with touch screen display. Trouble shoot shows on display board automatically.  6.World famous brand compressor, 4-way valve, motor, pcb, heat exchanger, emerson alco expansion valve used. 7. Multiple protection function: high pressure, low pressur, overheating, overload anti-freezing, phase sequence,   Discharge temperature, suction temperature and so on.  8. All weather operation: stable operation without being influenced by weather.  9. Anti-corrosion: plastic case, coated steel or sus304# stainless steel case are available.  10. Refrigerant of r22, r407c, r134a are for optional.  11.  automatically defrosting function included.  Technical parameter: Unitsdbt-24wl Heating capacitykw24.00 Heating power inputkw5.70 Operating currenta8.70 Copw/w4.2 Power supply v/ph/hz380/3/50-60 Rated output water temp.°c55 Maximum output water temp.°c60 Compressortypescroll(evi compressor) Refrigerant typer407/410a Lengthmm715 Widthmm715 Heightmm1050 Unit noise level de(a)56 Net /gross weight kg135-160 Certificationcb, ce, emc, rohs, saso, ccc