Everyone please read this, what I do in my job it’s my responsibility and if you think I am wrong don’t do what I do please
Most of R 22 coils are design for up to 400 psi. R 22 is a low pressure system and it’s only 300 to 350 PSI but R 410 is a high-pressure refrigerant 350 psi up to 600 psi so when you changing your Txv from R 22 to R 410 coil please check the coil Pressure Rating and make sure your coil rate is between 350 psi to 600 Psi I never had any issues with replacing the R 22 piston to txv R410 and Maybe a few of the R22 Coils are not compatible with R410 system but Most of them are
Thank you