Hello Everone
I am looking for a few opinions on Setting TXV superheats on Refrigerants with a wide Glide such as the 407 blends. I work primarily on larger Supermarkets and notice a few differing opinions on setting TXV's
* I have heard people using the Dew/Bubble average. (which is what I use for setting Pressure controls/high side valves)
* I have heard people using the DEW and setting valves 6-8 deg F ( or to the MFG's spec)
I have been setting Superheats with the DEW temp, and I usually set the valves on the lower side 4-6 deg F .
* When the first droplet of vapor occurs (Dew Temperature)
* When the first bubble of vapor happens (Bubble Temperature)
Any Comments are appreciated.
