Space Airconditioning plc

Daikin – a history of world firsts Always innovating, never imitating
July 14th 2006

Space Airconditioning, established in 1980 and Daikin's only UK independent distributor reviews the technology used in the latest VRV systems (Variable Refrigerant Volume)

VRV History

Daikin pioneered VRV technology in 1982 and introduced its highly advanced VRV direct expansion air conditioning system to the European market place in 1987. Due to their extraordinary operating efficiency and design flexibility, Daikin's VRV systems have made savage inroads into the traditional central air conditioning market throughout Europe. Today through Space Air, Daikin offers an extensive range of VRV systems, all operating with the efficient and safe refrigerant R410A.

The VRV System Range Mini VRV Heat Pump technology (VRVII-S)

Ideal for the home or small commercial applications. Cooling Capacity Modules - 11.2, 14.0, 15.5 kW Heating Capacity Modules - 12.5, 16.0, 18.0 kW VRVII-S connects up to 9 indoor units to a single outdoor unit.

Water cooled/ground source Heat Pump (VRV-WII)

For taller buildings or refurbishment projects. Cooling Capacity Modules - 26.7, 53.4, 80.1 kW Heating Capacity Modules - 31.5, 63.0, 94.5 kW Using water as its heat source VRV-WII, connects up to 32 indoor units, can be 'piped-in' to enable floors or areas to be conditioned as required, has no limitations on water pipe lengths and can connect to an existing water source loop or ground source systems.

Latest VRVIII Heat Pump / Heat Recovery

Incorporating features of earlier VRV systems with additional new design features to improve installation, maintenance, capacity and overall performance. Cooling Capacity - 14.0 ~ 147.0 kW Heating Capacity - 16.0 ~ 170.0 kW VRVIII has greater capacity than its predecessor and connects up to 64 indoor fan coil units. Total piping length has been increased from 300m to 1000m and vertical separation between outdoor and indoor units from 50m to 90m. With the exception of VRVIII size 5, any outdoor unit can be combined with any other unit size, maximising choice on system priorities be it efficiencies, footprint or price. VRV-III system flexibility is unparalleled.

Environmental Benefits

An important environmental and installation feature of VRVIII is the ability to control the amount of additional refrigerant charging during commissioning. Leakage prevention is also further supported by the use of brazed joints in place of flanged and flared connections. Refinements to the system's purpose designed inverter driven 'G' type scroll compressor means losses are reduced by a further 2%, this is due to a higher operating speed. Furthermore the innovative method of supplying oil to the scroll by means of differential pressure improves lubrication and unit reliability. These developments enable VRV-III to return maximum COPs at full load.

Control Systems

Compatible with the complete Daikin suite of advanced air conditioning monitoring and control systems (Intelligent Touch Controller, Intelligent Manager, BACnet Gateway and LONWorks Compatible Gateway), the new VRV-III offers high energy saving, precisely controlled and monitored air conditioning solutions.

All Daikin VRV systems feature on the Enhanced Capital Allowance Scheme Energy Technology List. Full details are available from any Space Air office or web site www.spaceair.co.uk

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