Refrigerant Piping Connection
Refrigerant
Piping
Connection
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
16.5'
(
5 meters
). A minimum pipe run of
10' (
3 meters
)
is required to
minimize
vibration & excessive noise.
Refer to the table
on page 20
for specifications on
the maximum length and drop height of 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.
Connection Instructions –
Refrigerant Piping
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. Refer to
Fig. 5.1
for bad cut examples.
Oblique
Rough
Warped
90°
Fig. 5.1
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
Fig. 5.2
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