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Refer to Torque Requirement to connect pipes
CAUTION
WHEN CONNECTING REFRIGERANT PIPES, BE CAREFUL NOT TO USE EXCESSIVE
TORQUE OR TO DEFORM THE PIPING IN ANY WAY. YOU SHOULD FIRST CONNECT THE
LOW-PRESSURE PIPE, THEN THE HIGH-PRESSURE PIPE.
MINIMUM BEND RADIUS
When bending connective refrigerant piping,
the minimum bending radius is 10cm.
Instructions for Connecting Piping to Indoor Unit
Step 1：
Align the center of the two pipes
●
that you will connect.
Indoor unit tubing
TORQUE REQUIREMENTS
Outer Diameter of Pipe(mm) Tightening Torque(N•m) Flare dimension(B)(mm)
Ø 6.35 (Ø 1/4")
Ø 9.52 (Ø 3/8")
Ø 12.7 ( Ø 1/2")
Ø 16 ( Ø 5/8")
Ø 3/4")
Ø 19 (
DO NOT USE EXCESSIVE TORQUE
Excessive force can break the nut or damage the refrigerant piping. You must not exceed
torque requirements shown in the table above.
Flare nut
Pipe
18~20(180~200kgf.cm)
32~39(320~390kgf.cm)
49~59(490~590kgf.cm)
57~71(570~710kgf.cm)
67~101(670~1010kgf.cm)
Step 2：
Tighten the flare nut as tightly as possible by hand.
●
Using a spanner, grip the nut on the unit tubing.
●
While firmly gripping the nut on the unit tubing, use a
●
torque wrench to tighten the flare nut according to the
torque values in the Torque Requirements table below.
Loosen the flaring nut slightly, then tighten again.
Torque
wrench
Indoor unit tubing
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")
23.2~23.7 (0.91~0.93")
27
≥10cm
Radius
(4")
Spanner (fixed)
Flare nut
Connection pipe
Flare shape
90 ° 4
+ _
B
R0.4~0. 8
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