126
6. Place flaring tool onto the form.
7. Turn the handle of the flaring tool clockwise until the pipe is fully flared.
8. Remove the flaring tool and flare form, then inspect the end of the pipe for cracks and even flaring.
Step 4: Connect pipes
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
1. Align the center of the two pipes that you will connect.
2. Tighten the flare nut as tightly as possible by hand.
3. Using a spanner, grip the nut on the unit tubing.
4. 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 REQUIREMENTS
Outer Diameter of Pipe
(mm)
Tightening Torque (N•m)
Flare dimension(B)
(mm)
Flare shape
Ø 6.35 (Ø 0.25”)
18~20(180~200kgf.cm)
8.4~8.7 (0.33~0.34”)
Ø 9.52 (Ø 0.375”)
32~39(320~390kgf.cm)
13.2~13.5 (0.52~0.53”)
Ø 12.7 (Ø 0.5”)
49~59(490~590kgf.cm)
16.2~16.5 (0.64~0.65”)
Ø 16 (Ø 0.63”)
57~71(570~710kgf.cm)
19.2~19.7 (0.76~0.78”)
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 or damage the refrigerant piping. You must not exceed
torque requirements shown in the table above.
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.
Radius
10cm (4in)
Indoor unit tubing
Flare nut
Pipe
4
man_S60xx SCAN ('21) V4.indd 126
man_S60xx SCAN ('21) V4.indd 126
09-11-2021 09:07
09-11-2021 09:07
