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Author Question: A new split system air conditioning system is being installed. The actual line length is 48 feet. ... (Read 81 times)

RODY.ELKHALIL

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on: Jul 26, 2018
A new split system air conditioning system is being installed. The actual line length is 48 feet. The factory charge for the condensing unit is 94 ounces. The installation instructions state that the factory charge assumes a line length of 20 feet and gives the per foot adjustment as 0.6 ounces per foot. How much refrigerant should be added to the system after the lines and coil have been evacuated?
 
  What will be an ideal response?

Question 2

Give an example of a condition that can make a system appear undercharged even though the charge is correct.
 
  What will be an ideal response?


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fdliggud

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Reply #1 on: Jul 26, 2018
Answer to Question 1

Only the line adjustment needs to be added. The line adjustment is calculated by:

Answer to Question 2

Low evaporator airflow due to dirt, improper fan speed, or poor duct design


RODY.ELKHALIL

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Reply 2 on: Jul 26, 2018
Great answer, keep it coming :)

billybob123

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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