FTX-N/U, FVXS-N, FDMQ-R Series EDUS091558E
173
3P379970-10C
8
6.
Refilling refrigerant
Check the type of refrigerant to be used on the machine nameplate.
Precautions when adding R410A
Fill from the liquid pipe in liquid form.
R410A is a mixed refrigerant, so adding it in gas form may cause the refrigerant composition to change, preventing normal
operation.
1)
Before filling, check whether the cylinder has a siphon attached or not. (It should have something like “liquid filling siphon
attached” displayed on it.)
Filling a cylinder with an attached siphon
Stand the cylinder upright when filling.
There is a siphon pipe inside, so the cylinder
need not be upside-down to fill with liquid.
Filling other cylinders
Turn the cylinder
upside-down when filling.
•
Be sure to use the R410A tools to ensure pressure and to prevent foreign objects entering.
7.
Refrigerant piping work
7-1. Cautions on pipe handling
•
Protect the open end of the pipe from dust and moisture.
•
All pipe bends should be as gentle as possible. Use a pipe bender for
bending.
7-2. Selection of copper and heat insulation materials
When using commercial copper pipes and fittings, observe the following:
•
Insulation material: Polyethylene foam
Heat transfer rate: 0.041 to 0.052W/mK (0.024 to 0.030Btu/fth°F (0.035
to 0.045kcal/mh°C))
Be sure to use insulation that is designed for use with HVAC Systems.
•
ACR Copper only.
•
Be sure to insulate both the gas and liquid piping and observe the
insulation dimensions as below.
Wall
If no flare cap is
available, cover
the flare mouth
with tape to keep
dirt and water out.
Be sure to
place a cap.
Rain
Gas side
Piping size
O.D. 3/8 inch
(9.5mm)
O.D. 1/2 inch
(12.7mm)
O.D. 5/8 inch
(15.9mm)
O.D. 1/4 inch
(6.4mm)
1-3/16 inch (30mm)
or more
1-9/16 inch (40mm)
or more
1-15/16 inch (50mm)
or more
1-3/16 inch (30mm)
or more
0.031 inch (0.8mm)
(C1220T-O)
0.039 inch (1.0mm)
(C1220T-O)
0.031 inch (0.8mm)
(C1220T-O)
I.D. 15/32-19/32 inch
(12-15mm)
I.D. 9/16-5/8 inch
(14-16mm)
I.D. 5/8-13/16 inch
(16-20mm)
I.D. 5/16-13/32 inch
(8-10mm)
13/32 inch
(10mm) Min.
Minimum bend radius
Piping thickness
Thermal insulation size
Thermal insulation
thickness
Liquid side
•
Use separate thermal insulation pipes for gas and liquid refrigerant pipes.
Gas pipe
Liquid pipe
Gas pipe
insulation
Liquid pipe
insulation
Finishing tape
Drain hose
Inter-unit wire
01_EN_3P379970-10C.indd 8
10/18/2019 9:18:00 AM
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 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 455: ...FTX N U FVXS N FDMQ R Series EDUS091558E 453 3P400464 1...
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Page 459: ...FTX N U FVXS N FDMQ R Series EDUS091558E 457 3P534932 1B...
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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...
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Page 478: ...476 FTX N U FVXS N FDMQ R Series EDUS091558E 3P436073 1 14 29 KPS063A47 Snow Hood Outlet...
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