Model ZR9W-200TV ZR9W-250TV ZR9W-300WA ZR13W-300WA Rated heating capacity KW 3.3 3.3 2.9 4.6 BTU 11200 11200 9500 15500 Water tank volume L 200 250 300 300 COP 4 4 3.7 3.6  Heating power input KW 0.82 0.82 0.8 1.3 Power supply V/Ph/Hz 220~240/1/50~60 Max outlet water temp ° C 60 60 60 60 Applicable ambient temp ° C 一7~43 一7~43 一7~43 一7~43 Rated running current A 3.7 3.7 3.7 6 Auxiliary electrical heating KW 1~2 1~2 1~2 1~2 Noise d B(A) 49 49 49 51 Air volume M³/H 700 700 700 700 Rated tank pressure Mpa 0.6 0.6 0.6 0.6 Water connections Inch 3/4'' 3/4'' 3/4'' 3/4'' Refrigerant  coil Internal coil Internal coil External coil External coil Gross weight KG 88 102 110 120 Container loading qty 20/40/40HQ 27/57/57 21/51/51 21/51/51 21/51/51 FAQ 1.Is the use and operation of air source heat pump unit easy? It is very easy. The whole unit adopts automatic intelligent control system. The user only needs to turn on the power supply for the first time, and fully realize the automatic operation in the later use process. When the water temperature reaches the user's specified temperature, the system automatically starts up and runs when the water temperature is lower than the user's specified water temperature, so that hot water can be available 24 hours a day without waiting. 2.Can you tell me the heating time of your all in one heat pump? It needs to be heated from 30 to 60 degrees. Water tank volume*（Outlet water temperature - inlet water temperature）/860/Heating capacity=Heating time.Taking ZR9W-200TV model as an example, the heating capacity of it is 3.3kw, so 200 * (60-30) / 860 / 3.3 ≈ 2.1 hours, so the unit will take about 2.1 hours to heat from 30 ℃ to 60 ℃.