Daikin Europe’s VRV Q heat pump replacement system for R-22 system replacement, and its water cooled VRV-W series for taller buildings and geothermal applications, both now incorporate VRV IV technology.
VRV IV technology incorporates weather dependent Variable Refrigerant Temperature technology, continuous heating during defrost and the VRV Configurator for simplified commissioning and servicing.
Both Variable Refrigerant Temperature and the Configurator are now features of replacement VRV IV-Q for heat pump replacement and the water-cooled VRV IV-W series.
For installers, the VRV configurator software is said to simplify commissioning, allowing settings to be configured remote from the installation, so less time is required configuring the outdoor unit on site.
Daikin claim that several installations can be also be commissioned using the same settings, saving even more time.
On-going maintenance is easier too, thanks to a graphical interface allowing installers to evaluate operational data and errors.
Variable Refrigerant Temperature technology delivers a 28 per cent increase in ESEER. Any of the eight different modes, which can be selected at any time, increase flexibility and available options depending on whether priority is on efficiency, comfort or reaction to load variations.
Daikin Europe’s VRV IV Q series uses R-410A, which is said allows existing R-22 pipework to be retained.
The VRV IV Q series also potentially allows controllers and indoor units installed since 1996 to be retained, so only outdoor units and heat recovery branch selector boxes have to be replaced, thus spreading costs and minimising disruption to business operations.
Daikin also claim that changing to VRV IV-Q also means energy bills can be reduced by up to 70 per cent.
High seasonal efficiencies through Variable Refrigerant Temperature technology and easier installation and configuration using the VRV IV configurator are also features of Daikin Europe’s water-cooled VRV IV-W series.
The water-cooled range is suitable for taller buildings where the maximum allowable refrigerant piping of air-cooled systems could be exceeded or where there is little space to site outdoor units. The compact and lightweight units can be stacked to save even more space, with the 8HP unit weighing just 149kg and being under 1m high.