Energy Manager

Daikin’s Magnitude WMT: water-cooled chiller

A magnetic bearing centrifugal chiller designed for low GWP refrigerant.

December 18, 2023  By Energy Manager

Daikin Applied has introduced the Magnitude WMT, a magnetic bearing centrifugal chiller designed for the low global warming potential (GWP) refrigerant R-1233zd(E).

The use of low-GWP refrigerants is one of the pillars of building decarbonization, and the WMT refrigerant has an ultra-low GWP of 1.

Plus, the chiller’s magnetic bearing compressor with a variable frequency drive provides additional energy efficiency gains, and eliminates lubrication, mechanical seals, wear surfaces and gears.


The WMT’s compressor features a two-stage impeller layout enhanced by a refrigerant economizer. The dual-stage setup maximizes part-load performance, which is important because most chillers operate at off-design conditions approximately 99% of the time.

The WMT’s low in-rush current at startup is suited for operations with backup or emergency power systems decreasing disruptions to cooling of data centres and other vital services.

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