Model FR9W-150T FR13W-250T FR18W-300T FR25W-500T Rated heating capacity KW 3 4.3 6 8 BTU 10000 14500 20000 27500 COP 3.3 3.3 3.3 3.2  Heating power input KW 0.9 1.3 1.8 2.5 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 running current A 4.2 6 8.4 11.7 compressor qty PC 1 1 1 1 fan motor qty PC 1 1 1 1 fan speed RPM 850 890 890 890 Water connections Inch G3/4'' G3/4'' G3/4'' G3/4'' gas pipe dimension Inch 1/4''+3/8'' 1/4''+3/8'' 1/4''+3/8'' 1/2''+3/8'' tank volume L 150 250 300 500 rated tank pressure Mpa 0.6 0.6 0.6 0.6 auxiliary electrical heating KW 1~2 1~2 1~2 1~2 PCCE  level I I I I water-proof grade IP*4 IP*4 IP*4 IP*4 outdoor gross weight KG 28 37 41 52 FAQ 1.How much the air to water heat pump power consumption? Mainly influenced by outdoor temperature.When the outdoor temperature is lower,the heating time is longer,the power consumption is more,and vice versa. 2.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.