neil74
23-04-2009, 07:47 PM
Hi everyone,
We have recently converted a DX water chiller from R22 to R422D and we are having problems with getting the correct duty/superheat/suction presure when the chiller is fully loaded, it appears we need to increase the capacity of the exspansion valve which isn't to much of a problem but l would appreciate anyone else's experiences with this refrigerant and also if anybody could shed some light on using an R404a expansion valve which l've heard suggested instead of an R22 valve?
Thanks for any comments they will be very appreciated.
We have recently converted a DX water chiller from R22 to R422D and we are having problems with getting the correct duty/superheat/suction presure when the chiller is fully loaded, it appears we need to increase the capacity of the exspansion valve which isn't to much of a problem but l would appreciate anyone else's experiences with this refrigerant and also if anybody could shed some light on using an R404a expansion valve which l've heard suggested instead of an R22 valve?
Thanks for any comments they will be very appreciated.