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10
Refrigerant piping connection
Outer diameter of
Tightening torque (N•cm) Flare dimension(B)
pipe (mm)
Ø 6.35 (Ø 0.25")
18~20 (180~200kgf.cm)
Ø 9.52 (Ø 0.375")
32~39 (320~390kgf.cm)
Ø 12.7 (Ø 0.5")
49~59 (490~590kgf.cm)
Ø 16 (Ø 0.63")
57~71 (570~710kgf.cm)
Ø 19 (Ø 0.75")
67~101 (670~1010kgf.cm) 23.2~23.7 (0.91~0.93")
Do not use excessive torque:
Excessive force can break the nut
C
or damage the refrigerant piping.
You must not exceed torque
requirements shown in the table
above.
10.2 Instructions for
connecting piping to
outdoor unit
1. Unscrew the cover from the packed valve on
the side of the outdoor unit.
2. Remove protective caps from ends of valves.
3. Align flared pipe end with each valve, and
tighten the flare nut as tightly as possible by
hand.
4. Using a spanner, grip the body of the valve. Do
not grip the nut that seals the service valve.
5. While firmly gripping the body of the valve,
use a torque wrench to tighten the flare nut
Split type air conditioner / User Manual
Torque requirements
(mm)
8.4~8.7 (0.33~0.34")
13.2~13.5 (0.52~0.53")
16.2~16.5 (0.64~0.65")
19.2~19.7 (0.76~0.78")
according to the correct torque values.
6. Loosen the flaring nut slightly, then tighten
again.
7. Repeat Steps 3 to 6 for the remaining pipe.
C
Valve cover
Flare shape
90 ° ± 4
B
Use spanner to grip main body
of valve:
Torque from tightening the flare
nut can snap off other parts of
valve.
R0.4~0.8
49 / EN
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