Oblique
Rough
Warped
Pipe
Reamer
Point down
Page 27
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. A minimum pipe run of 3 meters is requires to minimise vibration & excessive
noise.
Refer to the table below for specifications on the maximum length and drop height of piping.
Model
Capacity (Btu/h)
Max. Length (m.)
Max. Drop Height (m.)
R-32 Refrigerant Split Air
<15 000
25
10
≥ 15,000 and < 24,000
30
20
≥
24 000 y < 36 000
50)
25
R-32 Fixed-speed Split Air
<18 000
20
8
≥ 18,000 and < 36,000
25
10
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 angle.
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.
Step 3: Flare pipe ends
Proper flaring is essential to achieve an airtight seal
1. After removing burrs from cut pipe, seal the ends with
PVC tape to prevent foreign materials from entering
the pipe.
2. Sheath the pipe with insulating material.
3.
Place flare nuts on both ends of pipe. Make sure they
are facing in the right direction, because you can't put
them on or change their direction after flaring. PVC de
los extremos del tubo.
