Hi all i am fairly new to HVCA
I was wonering if any one would help explain a query i have. I am aware of the target superheat caculation but i have just got the hvac buddy android app which calculates target superheat i input in the following info. R wet B 16.7c, out door dry 23.9c it gives a target of -4.0 but i dont understand how it can be a negative value should the target be around 8.5 Thanks for any help