The compressor in an existing split system air conditioning ...

[brutforce]

The compressor in an existing split system air conditioning system is being replaced. The actual line length is 35 feet. The factory charge for the condensing unit is 100 ounces. The installation instructions state that the factory charge assumes a line length of 15 feet and gives the per foot adjustment as 0.6 ounces per foot. How much refrigerant should be added to the system after the system has been evacuated?
 
  What will be an ideal response?

Question 2

Who is the most reliable source of information regarding the charge for any particular piece of equipment?
 
  What will be an ideal response?

[Harbringer]

Answer to Question 1

Since the entire charge was removed, the factory charge plus the line adjustment should be added. The line adjustment is calculated by:

Answer to Question 2

The equipment manufacturer

[brutforce]

Both answers were spot on, thank you once again

[Harbringer]

Great! Please up vote