AIRSTAGE™  (VRF Systems)

AIRSTAGE™ J-II Series

Fujitsu General provides air conditioning systems for a wide range of applications from small office buildings and stores to large houses.

Photo of outdoor unit


System Outline

High Energy Efficiency
Heat pump inverter control is used to achieve an efficient cooling and heating operation in any indoor unit combination.
Flexible systems for small- and medium-size buildings air conditioning
Space saving design and long piping design allow for flexible installation on the roofs or balconies of smalland medium-size buildings.
Multiple indoor units of various capacities and types can be connected.


Outdoor units lineup


 

Features

Load curve (a typical office building)

The building load is in the range of 40% to 80%.
Therefore, most air conditioners do not operate at maximum load, but operate at low to medium loads. Especially, for multi system, operation performance at partial load is important because air conditioners do not always operate at full load all the time.
Aiming at energy saving performance matched to actual operation, Fujitsu General has developed a high performance air conditioner corresponding not only during the rated performance at 100% load, but also at low to medium load.

Illustration of Load curve.

High EER / COP

Comparison of High part load performance. 4HP-(EER 3.72,COP 4.29). 6HO-(EER 3.60,COP 4.20). 8HO-(EER 3.45,COP 3.95).

Conditions :
Connected indoor units: AUXA30GALH+AUXD24GALH
Cooling : indoor temp. of 27°CDB / 19°CWB, outdoor temp. of 35°CDB / 24°CWB
Heating : indoor temp. of 20°CDB / 15°CWB, outdoor temp. of 7°CDB / 6°CWB

Advanced high efficiency technology

Outdoor unit illustration

Large propeller fan

High performance and low noise realized by large propeller and optimization of angle.


DC fan motor

Miniaturized, low noise, high efficiency, multi-stage DC fan motor is mounted.


Large heat exchanger

Heat exchange performance is substantially improved by mounting of 3-row large heat exchanger.


DC inverter control

Efficiency is improved by mounting of new active filter module.


Subcool heat exchanger

Cooling performance is improved by mounting of dual tube heat exchanger.

Graph of Cooling performance improved.


DC twin rotary compressor

Efficiency in all load regions is good. Especially good performance from low to medium at normal operation.

Compressor efficiency graph of DC twin rotary compressor.


Long Piping Length

Our advanced refrigerant control technology allows us to achieve a total refrigerant piping length of 180m. This opens up new possibilities in system design.

Total pipe length 180m max.

More Comfort

Non-stop oil recovery operation

A comfortable room condition is maintained during oil recovery mode because the product continues to operate without stopping the cooling or heating operation.

Difference in oil recovery operation of the J-2 series and Previous model.

Easier Installation

Connection check function : Possible to confirm whether wiring connection and address setting are correct by a quick check run function.

  • Display connected indoor unit numbers
  • Duplicately set address number of indoor unit can be displayed


 

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