Introduction – J-III Series VRF System

The J-III series is a dedicated Variable Refrigerant Flow (VRF) / multi-split system engineered for light to mid-sized commercial buildings, retail spaces, multi-unit dwellings and tertiary zones. At its core, the system integrates advanced inverter-driven compressor technology, an optimized refrigerant circuit, and compact outdoor and indoor unit design to achieve high part-load efficiency, installation flexibility and service-ease.

Key Technical Highlights

  • Capacity and refrigerant: The range includes models starting from nominal cooling ~12.1 kW (for example, model AJY040LBLAH) upward. The referenced small capacity unit uses R410A refrigerant, charge ~4.8 kg. fujitsu-general.com+1

  • Efficiency: The 12.1 kW unit demonstrates a cooling EER of 4.17 W/W and a heating COP of 4.86 W/W. fujitsu-general.com

  • Pipe-length / height difference: Supports a total refrigerant pipe length of up to 180 m and a maximum height difference of 50 m for this small-capacity unit. fujitsu-general.com

  • Outdoor-indoor connectivity: For certain models in the series (notably the “L” variant) the number of connectable indoor units is expanded — e.g., up to 40 indoor units in one example of the 14/16 HP class. fujitsu-general.com+1

  • Installation / service advantages:

    • Compact outdoor unit dimensions in L-series (e.g., 1,638 mm high × 1,080 mm wide × 480 mm deep) allow installation in constrained areas. fujitsu-general.com

    • Quiet operation and reduced refrigerant charge (≈ 14% reduction vs prior generation in certain models) to meet European EN-378 refrigerant-safety standards. fujitsu-general.com+1

    • Design flexibility to address multi-zone requirements, retrofit constraints, long refrigerant runs and simplified service access.

Release Timeline

  • The core J-III Series is shown on Fujitsu’s global “AIRSTAGE VRF Systems - J-III Series” product page. fujitsu-general.com

  • A formal press release dated March 30 2018 announced the J-III L Series 14/16 HP models in the European market. fujitsu-general.com+1

  • Earlier, 8 to 12 HP variants of J-III L were introduced in September 2017 (Europe) according to the March 2018 release. fujitsu-general.com

  • A North American launch of the J-III L series for shops/offices from April 2019 is also documented. fujitsu-general.com

  • From these data points, the series became widely available from late 2017 into 2018/19.

Thus, for practical purposes you can reference that the J-III Series was released around 2017-2018, with full “L” variant rollout completed in 2018-19.