Daikin’s fourth-generation VRV

The fourth generation of Daikin’s VRV air-conditioning system is due to become available in January 2013. It will be available in the UK from Daikin Airconditioning UK and independent distributor Space Airconditioning. Major innovations include variable refrigerant temperature, continuous heating during defrost and the VRV configurator for simplified commissioning and servicing.

In automatic mode, the system is configured for high efficiency throughout the year, while allowing rapid response on the hottest days. This technology can increase seasonal efficiency by 28% by continually adjusting refrigerant temperature according to the required capacity and weather conditions.

For example, when the room temperature is close to the setpoint, a small difference between room and refrigerant temperature is sufficient for the system to operate effectively. In automatic mode, the refrigerant temperature is increased from 6°C (current operating standard) to a high temperature to significantly improve seasonal efficiency.

Another option is ‘high sensible’ mode to maximise energy efficiency. High outblow temperatures with no cold draughts are guaranteed, but the setpoint may not be maintained so accurately.

The VRV configurator offers an advanced software solution to simplify commissioning and servicing. It allows the remote configuration of settings that can be used at multiple site — so less time is required on the roof to configure outdoor units.

Ongoing maintenance is also easier, thanks to a graphical interface that allows engineers to evaluate operational data and errors.

A new intelligent Touch Manager (iTM) provides an intuitive user interface with a visible floorplan. It can manage up to 2560 indoor units and provides energy-management tools to maximise efficiency.

For more information on this story, click here: Dec 2012, 161
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