INSTALLATIONI I METHOD
Connection of Refrigerant Piping
❏Flare Processing
1.Cut the pipe using the pipe cutter.
90 | Oblique | Roughness | Burr |
2. Insert the flare nut into the pipe, and then perform the flare processing.
D
A
◆ Unproper flaring
Outer Diameter |
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ø | 9.52 mm(3/8") | 1.8 mm(7/100") | ||
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ø | 19.05 mm(3/4") | 2 | 1 | mm(9/100") |
5 | ||||
Inclined Surface Cracked Uneven
damagedthickness
❏Pipe Bending
1.Perform bending of the pipe using the bender which has a specified bending radius.
2.Be sure to take full care to perform bending of the pipe successfully at one time. Bending and unbending the pipe more than twice makes
the bending work increasingly difficult.
3.You may use the spring inserted into the gas pipe instead of the bender to bend the pipe.
4.When you bend the pipe using the spring, hold the pipe with both hands to prevent any distortion, and secure a minimum bending radius of more than 100mm(4 inch).
Spring
❏Tightening of Connection Parts
◆Align the center of the connection piping, and tighten the flare nut by turning it with hand. Then tighten it again using the spanner in the direction as shown in the figure.
Outer Diameter | Tightening Torque | Final Torque |
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ø | 9.52mm(3/8") | 400 kg • cm(28 | 4 |
| ft•lb) | 450 kg • cm(32 | 1 |
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| ft•lb) |
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5 |
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ø | 19.05mm(3/4") | 700 kg • cm(50 | 3 |
| ft•lb) | 750 kg • cm(54 | 1 |
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5 | 5 |
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