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VRV R-22 replacement and water cooled VRV ranges upgraded to fourth generation VRV technology

Daikin’s VRV Q replacement system, which enables cost-effective R-22 system replacement, and its water cooled VRV series for tall buildings and geothermal applications, both now incorporate the latest VRV IV innovations to improve energy efficiency by more than 70%.

Since its launch in autumn 2012, the fourth generation of Daikin’s VRV heat pump has proved popular with consultants and end users alike, with its class-leading efficiencies, operational costs and reduced carbon emissions. VRV IV introduced three revolutionary innovations: 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 and the water-cooled VRV IV series.

Variable refrigerant temperature technology allows VRV systems to be customised using a choice of eight different modes, which can be selected at any time. Most of the modes are weather dependent, thus meeting a building’s needs in the most intelligent way.

Automatic mode, for example, can deliver a 28% increase in ESEER, by continually adjusting the refrigerant temperature according to the required capacity and weather conditions. This factory set mode ensures the highest efficiencies are achieved throughout the year while  the system can react quickly on the hottest days.

High Sensible mode, on the other hand, maximises energy efficiency and guarantees high outblow temperatures with no cold draughts, although the set point may not be maintained so accurately. Changing settings is easy and allows the VRV system to be customised  to meet end-user requirements. 

VRV IV Q series, for fast, cost-effective upgrading of R-22 systems
Time is running out for systems running on R-22, with a total European ban coming into force on 1 January 2015. While systems using R-22 can still be used after the ban, they can no longer be maintained or serviced. In case of a breakdown, this means possible long and unplanned downtime, so businesses should consider replacing their systems now.

Daikin’s VRV IV Q series is a fast and cost-effective alternative to complete system replacement. It uses R-410A refrigerant gas, which is the most efficient refrigerant that is widely available on the market. R-410A gas has lower global warming impact than R-22, yet 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. Less waste is produced and cost savings of up to 50% can be achieved when compared with replacing an entire system. Changing to VRV IV also means energy bills can be reduced by up to 70%.

The new VRV Configurator software allows settings to be configured remote from the installation and makes maintenance easier too, with a graphical interface allowing operational data and errors to be evaluated.

These innovations mean now, more than ever-before, that the VRV IV Q series is the obvious choice for businesses looking to upgrade and future-proof their climate control systems. The range can help both public and private sector organisations meet environmental legislation requirements for many years to come. 

VRV IV W series: the ideal solution for tall commercial buildings
High seasonal efficiencies through Variable Refrigerant Temperature technology and easier installation and configuration using the VRV configurator are also features of the latest version of Daikin’s water-cooled VRV range, the VRV IV W series. Completing the efficiency package is Variable Water Flow technology which regulates water flow, depending on the required capacity at any one time, saving even more energy.

The water-cooled range is ideal for tall buildings where the allowable refrigerant piping of air-cooled systems is too short 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. They are also quiet, making them suitable for areas with stringent noise restrictions.

The geothermal models have also been upgraded, giving superior efficiency, even in the most extreme climates, as the temperature of groundwater remains relatively stable. In geothermal mode the inlet water temperature can be as low as -10°C in heating and 6°C in cooling. Additionally, the geothermal and standard series are now available as one model, making stock management easier.

As with all VRV IV systems, VRV IV-Q and VRV IV-W heat pumps are designed specifically for the European market and are manufactured in Europe, so lead-in times are short. Both models can be used with Daikin’s wide range of fan coil, ventilation and air handling units and Biddle air curtains and can be used to produce hot water.