Plumbing. Heating. Conditioning. Energy Efficiency.

New Daikin heat pump

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23 July 2012

Daikin sets the standard yet again with the 4th generation of VRV. VRV IV achieves a new benchmark for efficiency, as it features major enhancements to the already industry-leading VRV solution. VRV IV offers three revolutionary innovations: variable refrigerant temperature, continuous heating on heat pump and the VRV configurator for simplified commissioning. The new VRV IV heat pump units are being launched officially in May 2012 and will be available to buy from October 2012, with the heat recovery units becoming available in March 2013.

Variable refrigerant technology allows the installer to customise the system using a choice of presets, to optimise the energy and comfort balance for the individual project. In automatic mode, the system is configured for the highest efficiency levels throughout the year, while allowing rapid response on the hottest days, ensuring comfort at all times. This technology delivers a 25% increase in seasonal efficiency, because the system continually adjusts the refrigerant temperature according to the total required capacity and the external weather conditions. For example, in mid season when little cooling is needed, the room temperature is already close to the setpoint. So a small difference between room and refrigerant temperature is sufficient for the system to operate effectively. Therefore, the system will change its refrigerant temperature from 6° (the current standard in the market) to a higher temperature. As a result, less energy is needed and seasonal efficiency is improved significantly. 

Continuous heating during defrost is another revolutionary innovation that sets a new standard in heating comfort, making VRV IV the best heat pump alternative to traditional heating systems.  Continuous heating finally overcomes any perceived disadvantages of specifying a heat pump, because the heat pump continues to provide heating even when in defrost mode. Why is this important? All heat pumps accumulate ice during heating operation, which must be melted periodically. Previously, defrost operations reverse the refrigeration cycle, causing a temporary temperature drop within the room. VRV IV features a unique heat accumulating element, which provides dedicated energy for the defrost function, so the indoor units continue to provide heating  and a comfortable indoor climate is maintained at all times.
The new VRV configurator completes the trio of innovations and offers an advanced software solution which simplifies commissioning and customisation. This means less time is required on the roof configuring the outdoor unit. Ongoing maintenance is easier too, thanks to a graphical interface that allows engineers to evaluate operational data and errors. The VRV configurator also allows multiple systems within multiple sites to be managed all in exactly the same way, thus offering simplified commissioning for key accounts.

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