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 by a single refrigerant system
Cooling and heating operation can be selected individually for each indoor unit to provide a comfortable room environment in each room by accommodating widely varying temperatures among them.
Year-round cooling operation
Choose the year-round cooling option for 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.
Highly energy-efficient operation
Our heat recovery systems achieve outstanding energy efficiency by transferring heat energy from rooms to be cooled to rooms to be heated.
Energy-saving technologies for boosting operational efficiency
Large powerful propeller fan
The fan using CFD*1 technology achieves both 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
The 4-face heat exchanger increases the effective surface area and significantly improves heat-exchanging efficiency.
Subcooling heat exchanger
The double-pipe structure with internal projections achieves great heat-exchanging efficiency.
High-efficiency, large-capacity DC inverter compressor
A high-efficiency, large-capacity DC twin-rotary compressor offers excellent intermediate capability.
Front intake port with a slanted-corner air-inhaling structure
When multiple outdoor units are installed, the uniquely shaped front intake improves the airflow into the heat exchanger.
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.
*1. No RB Unit is required 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
An RB Unit can be installed on either side of the control box.
An RB Unit can be installed on top of the control box to save space.
2 sets of connection terminals for greater flexibility
Two RB Units can be connected in series.
Easy to maintain in tight spaces
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)