Model ZR9W-200TE ZR9W-250WE Rated heating capacity KW 3.0 2.8 BTU 10000 9000 Water tank volume L 200 250 COP 3.3 3.6  Heating power input KW 0.9 0.78 Power supply V/Ph/Hz 220~240/1/50 220~240/1/50 Max outlet water temp ° C 60 60 Applicable ambient temp ° C 一7~43 一7~43 Duct diameter Φ 150 150 Rated running current A 4.2 4.2 Auxiliary electrical heating KW 1~2 1~2 Noise d B(A) 49 49 Air volume M³/H 700 700 Rated tank pressure Mpa 0.6 0.6 Water connections Inch 3/4'' 3/4'' Gross weight KG 88 112 Container loading qty 20/40/40HQ 27/57/57 24/51/51 FAQ 1.Where can heat pump units be used? Heat pump units are widely used, including various types of commercial machines specially designed for hotels, schools, hospitals, saunas, beauty salons, swimming pools, laundry rooms, etc.; there are also various types of household machines specially designed for families.  At the same time, it can also provide free air cooling, which can realize the whole year heating. 2.If there is any problems of the heat pump in the future, how to fix it? We do have unique bar code number for each unit. In case heat pump has any problems, you can describe more details to us together with the bar code number. Then we can trace the record and our technician colleagues will discuss how to solve the problem and update to you.