Daikin Europe NV has achieved a quantum leap forward in commercial air conditioning technology by the introduction of its VRV II, the worlds first R410A operated variable refrigerant flow system. Available in both heat pump and heat recovery versions, the new systems, which represents a considerable advance over earlier VRV systems, demonstrates Daikin’s innovative application of new technology and the latest HFC refrigerants to its VRV product programmes. Deliveries to the European Market are expected to commence mid 2003.
Loaded with new features
Many new features and installation benefits are incorporated in VRV II. Its operating range for example – 5Hp to 48Hp increment steps (22 system combinations), is wider than any of its contemporaries. Furthermore, its ability to run no less than 40 indoor fan coil units in heat recovery as well as heat pump cannot at present be matched by other comparable systems.
Technically advanced
The use of purpose designed dc reluctance inverter controller scroll compressors throughout the range is an important factor and results in high COPs. The dc motor of course, maintains high efficiency levels in the most frequently used ‘mid’ to ‘low’ settings, thereby reducing electricity consumption and costs. Powerful neodymium magnets (7 times more powerful than ferrite types) within the motor, increase torque and produced much higher power output to electrical input than can be generated by conventional motors. Optimising the sine wave curve of the motor also results in smoother rotation and enhanced motor efficiency. A significant improvement in heating mode is also realised with the extension of the operation range down to –20oC.
Continuous system operation
Continuous operation is ensured by the provision of double back up for compressors and outdoor units in order to maintain minimum emergency capacity. The new system also offers high reliability by balancing compressor duty by varying the starting sequence of multiple outdoor unit systems.
