Advantages of water source heat pump water heater---11.00kw: 1) safe and convenient to use: the water and electricity are seperated section, avoid any danger caused from leakage of electricity and dry burning. 2) automatic control: A. High/low pressure protection and insufficient water flow protection;automatic unit on/off timer clock. B. Automatic reversing defrosting function enables, units to work reliably in hard winter. C. Unit runs automatically according to set water temperature. 3) lcd display controller, convenient to operate and control. 4) qualified components:branded compressor(sanyo, copeland), emerson expansion valve, efficient tube in tube heat exchanger, durable and low noise nylon fans. Parameter list: Rated heating capacity: 11.00kw / 37543 btu Hot water supply: 0.23 t/h Rated heating input power: 2.25 kw Rated heating input current: 11.25 a Cop: 4.80 Power supply: 380v/220v/ 50hz Niose: 40 db(a) Compressor: sanyo, copeland Refrigerant type: r417a, r407c, r410a Throttle type: electronic expansion valves/thermal expansion valves Hot water side heat exchanger: efficient tube to tube heat exchanger Water flow: 1.81 m3/h Water pressure drop: 10 kpa Pipe size: 20 dn