Anybody ever use R438A ?

[Eco Friendly]

Hi

Which to find out if anybody out there ever use R438A (M099) on chiller of the following type:
Water Chillers,

Type: Carrier 30HR-140-D-6, each with electric and control centre and 4pcs
of half hermetic compressors.
Cooling Capacity : 422 KW
Water flow: 17.21 L/s
Water Temp: 12.6'C
Press Loss: 19.7kPa
Power Require: 137.2 KW
Condensing Water Flow: 22.41 L/s
Condensing Water Temp: 35 / 41'C

[Brian_UK]

Have you read the retro-fit guidelines?

http://www.idsrefrigeration.co.uk/uploads/ISCEON_MO_99_Retrofit_Guidelines.pdf