It's been a while since I posted anything here.
I am about to embark on changing some R22 YCAS chillers to R407c and was wondering if anyone out there has some experience they could share with regards to what problems I can expect to come up against. The local York supplier has told me that we will lose about 5 to 6% capacity but that is not a big problem as the units are already oversized for their duty.
I would appreciate any advice regarding the above project. I have been reading some blogs where people are talking about o-rings require changing etc because they change shape with 407c?????