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■ Each outdoor unit is factory charged (nameplate charge)
for the evaporator as well as a 7.5m(25ft) line set.
Any time a line set is used either shorter or longer then
the nominal 7.5m(25ft) line set length the refrigerant
charge has to adjusted.
■ Whether the line set is made shorter or longer you must
adjust the charge based on how many ft of tubing are
either added or removed based on 30g(0.32oz) of R-22
per meter(foot).
Example: A 30ft line set is used
5 additional ft X 0.32 ounces per foot= add
1.6 ounces of R-22
Important:
If you are ever uncertain of the unit charge, reclaim,
evacuate and weigh in the correct charge using the unit
nameplate charge adjusting for line sets longer or shorter
than 7.5m(25ft).
CHARGING
Pipe Size
Capacity
(Btu/h)
30k
Suction
Evap
Max.
length
A m(ft)
Additional
Refrigerant
g/m(oz/ft)
Max.
Elevation
B m(ft)
Standard
Length
m(ft)
5/8" 3/8" 7.5(25) 15(49) 30(98) 30(0.32)