Oblique
Rough
Warped
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9. Refrigerant Piping Connection
When connecting refrigerant piping, do not let substances or gases other than the specified refrigerant enter the unit.
The presence of other gases or substances will lower the unit's capacity, and can cause abnormally high pressure in the
refrigeration cycle. This can cause explosion and injury..
Note on Pipe Length
The length of refrigerant piping will affect the performance and energy efficiency of the unit. Nominal efficiency is tested
on units with a pipe length of 5 meters (16.5ft), A minimum pipe run of 3 metres is required to minimise vibration &
excessive noise.
Refer to the table below for specifications on the maximum length and drop height of piping.
Maximum Length and Drop Height of Refrigerant Piping per Unit Model
Model
Capacity (Btu/h)
Max. Length (m)
Max. Drop Height (m)
R-32 Inverter Split Air Conditioner
<15,000
25
10
≥
15,000 and < 24,000
30
20
≥
24,000 and < 36,000
50
25
Connection Instructions - Refrigerant
Piping
Step 1: Cut pipes
When preparing refrigerant pipes, take extra care to
cut and flare them properly. This will ensure efficient
operation and minimize the need for future maintenance.
1. Measure the distance between the indoor and
outdoor units.
2. Using a pipe cutter, cut the pipe a little longer than
the measured distance.
3. Make sure that the pipe is cut at a perfect 90º of the
unit.
DO NOT DEFORM PIPE WHILE
CUTTING
Be extra careful not to damage, dent, or deform the
pipe while cutting. This will drastically reduce the
heating efficiency of the unit.