33
User manual/
Installation manual
Refrigerant Piping Connection
When connecting refrigerant piping,
do not
let substances or gases other than the specied
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 efciency of the
unit. Nominal efciency is tested on units with a pipe length of 5 meters (16.5ft) to minimise
vibration & excessive noise.
Refer to the table below for specications 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)
R32 Inverter Split Air
Conditioner
< 15,000 25 (82ft) 10 (33ft)
≥ 15,000 and < 24,000 30 (98.5ft) 20 (66ft)
≥ 24,000 and < 36,000 50 (164ft) 25 (82ft)
Connection Instructions – Refrigerant Piping
Step 1: Cut pipes
When preparing refrigerant pipes, take extra
care to cut and are them properly. This will
ensure efcient 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 90° angle.
Oblique Rough Warped
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 efciency of the
unit.