... water source heat pump (water to water) 4.5kw-75kw,LCD automatic controller,famous scrow compressor, energy saving. Water Source Heat ... heat exchanger, factory insulated with flexible close cell material.CONDENSERHigh efficiency tube in tube heat exchanger, factory insulated with ... CIRCUIT Built with user side and source side water inlet/outlet connectors, water discharge connectors, air vent valve, ...