Technical parameters: air to water heat pumpModel: DE-46W/D Voltage: 380/50 Rated current (A): 8.6 Rated power (kW): 4.6 Rated heating quantity (kW): 20.7 Max. current (A): 55 Max. power (kW): 60 Anti-shock grade: 1 Protection grade: IP x 4 Machine weight (kg): 140 Machine size (mm): 800 x 780 x 1,000 Water feed speed (L/h): 450 Cycle water pump flow rate (cbm/h): 3.2 Actuating medium/fluorine quality (g): R417A/3000 Deployed water tank (MT): 3 - 5 Machine water pipe joint: G1-1/2 Ambient temperature: -10 - 45C Noise: 64dB