retrofit

[AIRTECH222]

Hi,

can me somebody help:

We want to do retrofit on two cooling chillers with axial fans, 30 kw and 200 kw. Now works with R-22.
With which refrigerant we must do retrofit ? Which spare parts must we replace on chillers when we do retrofit?
Thank you for quick reply

Best regards

[nike123]

http://refrigerants.dupont.com/Suva/en_US/pdf/h75326.pdf

http://tinyurl.com/c4hoc4

[AIRTECH222]

This chillers are for climatisation only cooling, why 404a ?

[NoNickName]

Why retrofit? If they run, let them run.

[nike123]

This chillers are for climatisation only cooling, why 404a ?
That are retrofitting refrigerant. You could also use DROP IN refrigerants.

Also, you cannot use R407C if you have flooded type evaporator like shell and tube evaporator.