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, reliable quality with high performance.
4. Auxiliary electric 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 ex-changer, Emerson ALCO expansion valve used.
7.Multiple protection function: high pressure, low pressure, 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, r410a,r417A are for optional. 
11. Automatically defrosting function included. 
Technical parameter:
Heating capacity:18.0KW    Heating power input:4.29KW    COP:4.2W/W    Operating current:6.55A      Power supply:380V/3Ph/50~60Hz     Refrigerant:R407C&R410a   
Unit noise level:55dB(A)   Net/Gross weight:128/153kg    Working temperature range: -25~45℃    Rated output water temperature:55℃
Note: 1.Rated test condition: Ambient temperature 20℃,Water temperature: inlet/outlet:15℃/55℃           2.The above designs and specifications might be changed  without prior notice for product improvement.