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MHI announces new R32 multi-split AC

JAPAN: Mitsubishi Heavy Industries Thermal Systems has started mass production of its KXZ3 series of commercial multi-split air conditioners for worldwide markets. 

The newly added lineup, which adopts R32 refrigerant, will be available in three models: 22.4kW, 28kW and 33.5kW. By combining individual units, a maximum 100.05kW can be achieved to accommodate a wide range of applications. 

The new series will be launched in the European market this summer, to be followed by successive launches in Australia, New Zealand and Turkey.

The new series increases energy savings through a near 18% improvement in SEER compared to previous 28kW versions. The increased energy efficiency is said to be due to the adoption of a new compressor optimised for R32, plus a new air flow path design, including a newly configured impeller and bell mouth.

The KXZ3 also features a new exterior design, while the required installation space has been cut some 28% from the previous models. This is said to be due to adoption of a single-fan structure and a compact yet highly efficient heat exchanger with reduced diameter copper tube. 

Newly added features include a variable temperature and capacity control which automatically balances energy saving performance and indoor comfort by the automatic adjustment of refrigerant pressure according to the indoor and outdoor temperatures. In addition, a new hot gas bypass defrost mode alleviates the fall in indoor temperature common to earlier defrosting operation. 

Under certain conditions, the KXZ3 series, like other products adopting the R32 refrigerant, also requires additional safety features in order to satisfy European safety standards. MHI Thermal Systems has a lineup of dedicated safety devices. Among them is a shutoff valve that can be connected to multiple indoor units. In these and other ways, the KXZ3 series has specifications enabling customers to curb initial installation costs.

Mitsubishi Heavy Industries Thermal Systems

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