Sri, I have one general question supply and return lines are header which is coming from the chiller. Suppose if it's coming from the VRF one outdoor and multiple indoor copper pipes connection how we can size the pipe diameter. Please Answer.
Brother you don't have to size them manufacturer decides the size of refrigerant pipes, however if you still want to size them refer ashrae fundamentals piping chapter and for pipe sizes refer datasheets
Assalamualaikum Sir My name is Shaik Sohail I am from India Sir I have Subscribed your Channel I have a One Request Please Make a Video on Plumbing Project with Calculations May Allah Bless you.