Hello everyone,
I am faced with the same old question again. I have a customer that has bought a shut down cold storage that has an empty R22 recirculated system . He has asked me what is the right thing to do. For me it would be convert to ammonia. All the pipe and coils are steel. All the compressors are Frick. He is a little nervous about this. I guess Ammonia has a bad rap for some reason. Has anyone done a conversion of a recirculated system to one of the new refrigerants? Lowest room temp will be 39 deg F.