Refrigerant
piping
Connection
Page 28
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.
Step 2: Remove burrs
Burrs can affect the air-tight seal of refrigerant
piping connection. They must be completely
removed.
1.
Hold the pipe at a downward angle to prevent
burrs from falling into the pipe.
2.
Using a reamer or deburring tool, remove all
burrs from the cut section of the pipe.
Pipe
Reamer
Point down
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 90°
angle.
Oblique Rough
Warped
90°
Bends: no more than 5 places. A minimum pipe run of 3 metres is required to minimise vibration &
excessive noise.
Note on Pipe Length
Ensure that the length of the refrigerant pipe, the number of bends, and the drop height
between the indoor and outdoor units meets the requirements shown in the following table :
The Maximum Length And Drop Height Based on Models. (Unit: m/ft.)
Type of model
Capacity (Btu/ h)
Length of piping
M aximum drop height
North America,
Australia
and the
European frequency
conversion Split
Type
<15K
25/82
10/32.8
≥
15K - <24K
30/98.4
20/65.6
≥
24K - <36K
50/164
25/82
≥
36K -
≤
60K
75/246
30/98.4
Other Split Type
12K
15/49
8/26
18K-24K
25/82
15/49
30K-36K
30/98.4
20/65.6
42K-60K
50/164
30/98.4
