For fast, cost effective replacement of existing air conditioning systems

VRVIII-Q is specifically designed for R22 replacement use.  Thanks to its unique refrigerant control system, VRV III-Q can be installed using a buildings existing piping* without the need for additional special equipment or major installation work.

This ability makes it ideal for refurbishing a buildings existing air conditioning system as it can be installed quickly and easily, with minimal disruption to the building occupants.  VRVIII-Q is available in either the Heat Pump or Heat Recovery series. 

  • Reuse existing pipework (where applicable)
  • High efficiency, EER & COP
  • Broad range of outdoor systems in both heat pump and heat recovery options
  • Automatic refrigerant charge
  • Simplified test operation
  • High 78.4 Pa external static pressure
  • Compact and light weight, significantly reducing constraints during carry-in
  • Compact form factor for reduced footprint

System Design

In refurbishing an existing R22 system, specialised equipment must be used to clean the entire piping network of the mineral oil used in R22 systems and other contaminants.  VRVIII-Q negates this step by utilising a built-in system flushing function, automatically flushing the piping network of contaminants and other deposits, collecting them in a cylinder for disposal, then recharging the system with new R410a refrigerant.

Automatic refrigerant charge measurement

When charging an existing air conditioning system with refrigerant, determining the necessary refrigerant charge can be difficult as the pipe run of the existing system may not be known.  VRVIII-Q simplifies the process by automatically measuring the exact refrigerant charge required for any given application, reducing the time spent on site during the commissioning stage.

Simplified Test Operation

Thanks to VRVIII-Q’s simplified test operation, system flushing and refrigerant charging are carried out with a single push of a button.  Combined with the automatic measurement of required refrigerant charge, this dramatically simplifies the testing and commissioning process when compared to conventional air systems.

  1. R-22 and R-410A indoor units cannot be combined in a single system due to incompatible communications.
  2. Conventional Branch Selector (BS) Units must be replaced in Heat Recovery systems.
  3. VRVIII-Q requires 3.3MPa or higher rated piping or branch piping.  Existing field piping whose wall thickness do not meet the requirements of VRVIII-Q may require replacement.  Thermal insulation is required for liquid and gas piping.



System Flexibility

Up to 64 indoor units can be connected to a single system, significantly higher than other legacy systems, so depending on your design it is possible to consolidate existing piping into a single piping run.

Enables increased capacity from a buildings existing piping

Thanks to VRVIII-Q's clever design and advanced technology you can increase the cooling capacity output of your air conditioning system whilst using the existing piping*.  That is, you can install a 16 Class (45kW) VRVIII-Q system using the existing refrigerant piping of a conventional 10 Class (28kW) R-22 system, providing enhanced performance without costly rework.


*The existing piping must be capable of handling an operating pressure of 3.3MPa, otherwise it should be replaced.  Thermal insulation must be used for liquid and gas piping.

VRVIII-Q Heat Pump

5 Class 8, 10, 12 Class 14, 16 Class 18, 20, 22, 24 Class 26, 28 Class 30, 32 Class
5 Class 8 Class 14, 16 Class  18, 20, 22, 24 Class 26, 28 Class 30, 32 Class

34, 26, 38, 40 Class 42, 44 Class 46, 48 Class
34, 36, 38, 40 Class  42, 44 Class 46, 48 Class



VRVIII-Q Heat Recovery

10, 13 Class 16, 18, 20, 22 Class 24, 26, 28, 30 Class
10, 13 Class 16, 18, 20, 22 Class 24, 26, 28, 30 Class

Cutting edge technologies to respond to the needs of larger buildings

Cutting Edge Technologies to respond to the needs of larger buildings

Since the launch of the first Daikin Variable Refrigerant Volume (VRV) air conditioner in 1982, Daikin has invested heavily in research and development, leading the way in technology and air conditioning innovation.  The result is a total variable refrigerant volume air conditioning solution with large outdoor capacities, simplified installation and greater energy efficiency than ever before.

Improved Fans and grilles:  Daikin VRV III achieves a high 78.4 Pa external static pressure thanks to reduced internal pressure loss and the use of Daikin's proprietary fans and grilles.


Aero spiral fan and aero asymmetrical fan:  With the introduction of the VRV III range, Daikin increased the surface area of each fan blade, optimising blade design to suit each casing, reducing pressure loss for a higher external static pressure.

Aero asymmetrical fan

Cutting Edge Technologies to respond to the needs of larger buildings

Daikin's 10 class (28kW) VRV III outdoor units all feature four blade, 700mm fans, for a 25% greater fan surface area than previous models

Aero spiral fan (Powerful Dual DC fan)

Cutting Edge Technologies to respond to the needs of larger buildings

14 and 16 class (40 and 45 kW) VRV III units now use dual 540mm fans, increased airflow by 20% over previous models.


Aero Smooth Grille

Cutting Edge Technologies to respond to the needs of larger buildings

Daikin's Aero Smooth Grille is used across the entire VRV III range.  These three-dimensional, woven steel grilles are designed to facilitate smooth, low turbulence airflow.  A durable fire resistant coating protects them from damage or corrosion.

Heat Exchanger:  With a 7-10% effective length increase over previous models, the larger effective area of the heat exchanger is a key factor behind the systems high COP.  Further performance gains have been achieved through the use of an optimised e-Pass heat exchanger.

High efficiency compressors – the key to Daikin VRV-III's high COP and larger capacity

High efficiency compressors the key to Daikin VRV-III's high COP and larger capacity

Reluctance DC scroll compressor:  Daikin's Scroll Compressors are quieter and more efficient than conventional compressors thanks to their heat-loss minimising high pressure dome construction, and the use of high pressure lubrication oil to reduce thrust losses.  Combined with a high efficiency Neodymium motor, these features result in improved efficiency and reduced operating noise levels.

Powerful Magnets:  Daikin motors use Neodymium magnets.  10 times stronger than conventional ferrite, Neodymium means Daikin motors can efficiently deliver more torque.

High speed:  Daikin's high-performance, low-noise scroll compressor can operate at a faster rate thanks to advanced stress analysis during the design process for increased strength and oil film control in the high thrust mechanism*.

High Thrust Mechanism:  By introducing high pressure oil, the reactive force from the fixed scroll is added to the internal force, reducing thrust losses, improving efficiency and suppressing noise.

Heat Transfer circuit:  By sub-cooling refrigerant before expansion, the refrigerant volume required by the indoor units can be reduced without lowering the evaporation temperature.  This permits the use of narrower piping for easier, less intrusive installation.

Compact Aero Box:  By stacking inverter and control PCBs and optimising internal design for airflow speed, Daikin engineers have been able to reduce the overall size of the outdoor unit, operating noise output and power requirements for the large-diameter fanned outdoor unit.

Smooth Sine Wave DC Inverter:  Sine wave operation results in smoother motor rotation, lowering operating noise levels and improving energy efficiency.

High efficiency compressors – the key to Daikin VRV-III's high COP and larger capacity

DC Fan Motor:  Used across Daikin's entire VRV III range, (5-54 class (14-147 kW)), DC Fan Motors can deliver efficiency gains of up to 40% over conventional motors, especially at low speeds.



Download the latest VRV III Q Product Brochure for more information.

Technical Documents:

If you are a registered commercial user or a Daikin Dealer, you also have access to a full range of technical and support materials, including Engineering Data, Service and Installation Manuals via the Daikin Secure Portal.