Airstage™ (VRF Systems) VR-II Series
- High Operating Energy Efficiency
- Energy saving technology that boosted operation efficiency
- Ideal heat exchanger path control
- Sophisticated operating control
- Flexible piping connection
- Flexible installation of refrigerant branch unit
Outdoor Units Line up
|For 208 /230V||For 460V|
Simultaneous cooling and heating operation using 1 refrigerant system
Cooling and heating can be freely selected for each indoor unit to provide simultaneous cooling and heating in the rooms with large temperature differences, etc.
Annual cooling operation
Use annual cooling operation for the rooms and other spaces that require constant temperature control throughout the year.
Handles changes in the temperature difference
The operation mode can be changed when there are large temperature differences during the day, such as between seasons.
High Operating Energy Efficiency
Our Heat recovery systems achieve high operating energy efficiency by drawing heat from the room to be cooled and transferring it as energy for rooms that are to be heated.
Energy saving technology that boosted operation efficiency
Powerful large propeller fan
By using CFD*1 technology, a newly designed fan achieves high performance and low noise operation.
- CFD = Computational Fluid Dynamics
3 phase DC fan motor
Efficiency is substantially improved by using a high efficient motor with sophisticated driver control. In addition, the DC fan motor operates very quietly.
Sine-wave DC inverter control
High efficiency is achieved by the adoption of a reduced switching loss IPM.
4-face heat exchanger
Heat exchange efficiency is significantly improved by the introduction of a new 4-face heat exchanger that increases effective surface area.
Subcool heat exchanger
High Heat Exchange efficiency is achieved by using an internal projection shape double pipe construction.
High efficient and large capacity DC inverter compressor
Large capacity high efficient DC twin rotary compressor with excellent intermediate capability.
Front intake port (corner cut air inhaling structure)
In multiple outdoor unit installations, the unique front intake design improves airflow into the Heat Exchanger.
All inverter compressor
Large capacity DC inverter compressor
Large capacity high efficiency DC twin rotary compressor with excellent intermediate capability.
Ideal heat exchanger path control
Heat exchanger is split into top and bottom. Heat exchange efficiency is improved by optimum heat exchanger path refrigerant control. Refrigerant is more distributed at the top side heat exchanger with a large intake airflow.
Sophisticated operation control
When multiple outdoor units are connected, sophisticated operation is performed by each compressor. Efficiency is improved by all compressors at part load and distributing refrigerant to all of the heat exchangers rather than to one compressor.
Flexible piping connection
Improved flexibility of refrigerant piping is achieved through the use of various piping and heat recovery refrigerant branch (RB) unit connections, for adjustments to the floor layout and building structure.
- The RB unit can be freely positioned between the first branch and the indoor unit.
- The maximum height difference between RB units is 49ft.(15m).
- 1: RB Unit is not necessary for cooling only use.
Flexible installation of refrigerant branch unit
- Small & slim design saves space. Height 7-13/16 in. (198mm)
- A drain pipe is not required
- The control box position can be changed to meet the installation conditions
- Small design saves space
- Simple installation
Installation possible from either side for freedom of the control box
Installation possible on the upper-side for use in narrow space
Up to 2 units can be connected in series.
Easy to maintenance in a narrow space
Maintenance can be performed from the side.
Electrical box can be temporarily fixed by sliding down.
Parts can easily be replaced, even in narrow ceiling spaces.
RB unit (single type)
RB unit (multi type)