104
FTX-N/U, FVXS-N, FDMQ-R Series EDUS091558E
C: 3P379970-7B
12
5.
Flaring the pipe end
1) Cut the pipe end with a pipe cutter.
2)
Remove burrs with the cut surface facing downward, so that the filings do not enter the pipe.
3)
Put the flare nut on the pipe.
4) Flare the pipe.
5)
Check that the flaring has been done correctly.
WARNING
• Do not apply mineral oil to the flare.
•
Prevent mineral oil from getting into the system as this would reduce the service life of the units.
•
Never use piping which has been used for previous installations. Only use parts which are delivered with this unit.
•
Never install a dryer to this R410A unit in order to guarantee its service life.
•
The drying material may dissolve and damage the system.
• Incomplete flaring may result in refrigerant gas leakage.
The flare’s inner
surface must
be flaw-free.
The pipe end must
be evenly flared in
a perfect circle.
Make sure that the
flare nut is fitted.
Set exactly at the position shown below.
A
Flaring
Die
A
0-0.020 inch (0-0.5mm)
Clutch-type
Flare tool for R410A
0.039-0.059 inch (1.0-1.5mm)
Clutch-type (Rigid-type)
0.059-0.079 inch (1.5-2.0mm)
Wing-nut type (Imperial-type)
Conventional flare tool
Cut exactly at right angles.
Remove burrs
Check
6.
Connecting the refrigerant pipe
CAUTION
• Use the flare nut fixed to the main unit. (This is to prevent the flare nut from cracking as a result of deterioration over time.)
• To prevent gas leakage, apply refrigeration oil only to the inner surface of the flare. (Use refrigeration oil for R410A.)
• Use a torque wrench when tightening the flare nuts to prevent damage to the flare nuts and gas leakage.
• Align the center of both flares and tighten the flare nuts 3 or 4 turns by hand, then tighten them fully with a spanner and a
torque wrench.
Torque wrench
Piping union
Flare nut
Do not apply refrigeration
oil to the outer surface.
Flare nut
Apply refrigeration oil to
the inner surface of the
flare.
Do not apply refrigeration oil to
the flare nut to avoid tightening
with excessive torque.
Spanner
Apply oil
Tighten
Piping size
Flare nut tightening torque
Gas side
O.D. 3/8 inch (9.5mm)
24.1-29.4ft • Ibf (32.7-39.9N • m)
O.D. 1/2 inch (12.7mm)
36.5-44.5ft • lbf (49.5-60.3N • m)
Liquid side
O.D. 1/4 inch (6.4mm)
10.5-12.7ft • lbf (14.2-17.2 N • m)
01_EN_3P379970-7B.indd 12
11/12/2015 13:29:57
Summary of Contents for FTX-N/U
Page 1: ...Heat Pump Split Type Air Conditioners FTX N U FVXS N FDMQ R Series EDUS091558E...
Page 2: ......
Page 17: ...FTX N U FVXS N FDMQ R Series EDUS091558E 15 C 3D123383 FTX24UVJU C 3D123379 FTX18UVJU...
Page 19: ...FTX N U FVXS N FDMQ R Series EDUS091558E 17 3D112919B FDMQ18 24RVJU 3D112918B FDMQ12RVJU...
Page 20: ...18 FTX N U FVXS N FDMQ R Series EDUS091558E 3D049611A BRC082A43 C 3D091305A BRC1E73...
Page 22: ...20 FTX N U FVXS N FDMQ R Series EDUS091558E 3D107983A RXL24UMVJUA 3D123362 RXL18UMVJUA...
Page 25: ...FTX N U FVXS N FDMQ R Series EDUS091558E 23 3D112629A FDMQ12 18 24RVJU...
Page 32: ...30 FTX N U FVXS N FDMQ R Series EDUS091558E 3D107985A RXL24UMVJUA...
Page 59: ...FTX N U FVXS N FDMQ R Series EDUS091558E 57 3D113126 FDMQ18RVJU...
Page 60: ...58 FTX N U FVXS N FDMQ R Series EDUS091558E 3D113128 FDMQ24RVJU...
Page 62: ...60 FTX N U FVXS N FDMQ R Series EDUS091558E 3D113129 FDMQ24RVJU...
Page 65: ...FTX N U FVXS N FDMQ R Series EDUS091558E 63 3D123455 FTX18UVJU 3D100354 FTX15NMVJU...
Page 66: ...64 FTX N U FVXS N FDMQ R Series EDUS091558E 3D094737 FVXS09NVJU 3D074866A FTX24UVJU...
Page 67: ...FTX N U FVXS N FDMQ R Series EDUS091558E 65 3D094777A FVXS15NVJU 3D094766 FVXS12NVJU...
Page 70: ...68 FTX N U FVXS N FDMQ R Series EDUS091558E 3D123453 RXL18UMVJUA 3D100636 RXL15QMVJUA...
Page 71: ...FTX N U FVXS N FDMQ R Series EDUS091558E 69 3D123454 RXL24UMVJUA...
Page 394: ...392 FTX N U FVXS N FDMQ R Series EDUS091558E 1P124687 1A...
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Page 401: ...FTX N U FVXS N FDMQ R Series EDUS091558E 399 3P124623 1E 4 Fig 6 Fig 5 Fig 8 Fig 7...
Page 412: ...410 FTX N U FVXS N FDMQ R Series EDUS091558E 3P124623 1E 15...
Page 422: ...420 FTX N U FVXS N FDMQ R Series EDUS091558E 3P124623 1E 25 Fig 9 Fig 12 Fig 10 Fig 11...
Page 423: ...FTX N U FVXS N FDMQ R Series EDUS091558E 421 3P124623 1E 26 Fig 14 Fig 13 Fig 16 Fig 15...
Page 425: ...FTX N U FVXS N FDMQ R Series EDUS091558E 423 1P126474 1B...
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Page 433: ...FTX N U FVXS N FDMQ R Series EDUS091558E 431 3P162015 1A...
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Page 436: ...434 FTX N U FVXS N FDMQ R Series EDUS091558E 3P162015 1A...
Page 455: ...FTX N U FVXS N FDMQ R Series EDUS091558E 453 3P400464 1...
Page 457: ...FTX N U FVXS N FDMQ R Series EDUS091558E 455 3P561172 1...
Page 459: ...FTX N U FVXS N FDMQ R Series EDUS091558E 457 3P534932 1B...
Page 469: ...FTX N U FVXS N FDMQ R Series EDUS091558E 467 3P436077 1...
Page 471: ...FTX N U FVXS N FDMQ R Series EDUS091558E 469 3P436078 1...
Page 472: ...470 FTX N U FVXS N FDMQ R Series EDUS091558E 3P436079 1 14 26 KPS067A44 Snow Hood Outlet...
Page 473: ...FTX N U FVXS N FDMQ R Series EDUS091558E 471 3P436079 1...
Page 475: ...FTX N U FVXS N FDMQ R Series EDUS091558E 473 3P436071 1...
Page 477: ...FTX N U FVXS N FDMQ R Series EDUS091558E 475 3P436072 1...
Page 478: ...476 FTX N U FVXS N FDMQ R Series EDUS091558E 3P436073 1 14 29 KPS063A47 Snow Hood Outlet...
Page 479: ...FTX N U FVXS N FDMQ R Series EDUS091558E 477 3P436073 1...
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