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23
INSTALLATION INSTRUCTIONS
Additional Refrigerant Per Pipe Length
Connective Pipe
Length (m)
Air Purging
Method
Additional Refrigerant
< Standard Pipe
Length
Vacuum
Pump
N/A
> Standard Pipe
Length
Vacuum
Pump
Liquid Side: Ø 6.35 (ø 0.25 in)
Inverter R410a:
(Pipe Length - SPL) x 20g/m
(Pipe Length - SPL) x 0.21oZ/ft
Liquid Side: Ø 9.52 (ø 0.375 in)
Inverter R410a:
(Pipe Length - SPL) x 30g/m
(Pipe Length - SPL) x 0.32oZ/ft
SPL = Standard Pipe Length
Note: Open valve stems gently. When opening valve stems, turn the hexagonal wrench until it hits against
the stopper. Do not try to force the valve to open further.
Note: Some systems require additional charging depending on pipe lengths. The standard pipe length
varies according to local regulations. For example, in North America, the standard pipe length is 7.5 m
(25 feet). In other areas, the standard pipe length is 5 m (16 feet). The additional refrigerant to be charged
can be calculated using the formula in the below chart.
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