Note On Adding Refrigerant - Airwell HDLA-022N-09M25 Bedienungsanleitung

Note on Adding Refrigerant

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 7.5m (25').
In other areas, the standard pipe length is 5m (16'). The refrigerant should be charged from the service
port on the outdoor unit's low pressure valve. The additional refrigerant to be charged can be
calculated using the following formula:
ADDITIONAL REFRIGERANT PER PIPE LENGTH
Connective Pipe Air Purging
Additional Refrigerant
Length (m) Method
< Standard pipe length Vacuum Pump N/A
Liquid Side: Ø 6.35 (ø 0.25") Liquid Side: Ø 9.52 (ø 0.375")
> Standard pipe Vacuum Pump R32: R32:
length
(Pipe length – standard length) x 12g/m (Pipe length – standard length) x 24g/m
(Pipe length – standard length) x 0.13oZ/ft (Pipe length – standard length) x 0.26oZ/ft
CAUTION
mix refrigerant types.
DO NOT
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