Refrigerant Piping Connection - EAS ELECTRIC ML Serie Manual De Instrucciones

Refrigerant Piping Connection

Safety Precautions
WARNING
• All field piping must be completed by a licensed
technician and must comply with the local and
national regulations.
• When the air conditioner is installed in a small
room, measures must be taken to prevent the
refrigerant concentration in the room from
exceeding the safety limit in the event of
refrigerant leakage. If the refrigerant leaks and
its concentration exceeds its proper limit,
hazards due to lack of oxygen may result.
• When installing the refrigeration system, ensure
that air, dust, moisture or foreign substances
do not enter the refrigerant circuit. Contami-
nation in the system may cause poor operating
capacity, high pressure in the refrigeration
cycle, explosion or injury.
• Ventilate the area immediately if there is refrige-
rant leakage during the installation. Leaked
refrigerant gas is both toxic and flammable.
Ensure there is no refrigerant leakage after
completing the installation work.
Refrigerant Piping Connection Instructions
CAUTION
The branching pipe must be installed
•
horizontally. An angle of more than 10° may
cause malfunction.
DO NOT install the connecting pipe until both
•
indoor and outdoor units have been installed.
Insulate both the gas and liquid piping to
•
prevent water leakage.
Step1: 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.
CAUTION
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.
1. Make sure that the pipe is cut at a perfect
90° angle. Refer to Fig. 7.1 for examples of
bad cuts
90°
Oblique
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.
Point down
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.
See Fig. 7.3
Flare nut
Copper pipe
V.2
V.1
7
Rough
Warped
Fig. 7.1
Pipe
Reamer
Fig. 7.2
Fig. 7.3
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