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• Do not use mineral oil on
fl
ared part.
• Prevent mineral oil from getting into the system as this would
reduce the lifetime of the units.
• Never use piping which has been used for previous installations.
• Only use parts which are delivered with the unit.
• Do never install a drier to this R32 unit in order to guarantee its
lifetime.
• The drying material may dissolve and damage the system.
• Incomplete
fl
aring may cause refrigerant gas leakage.
WARNING
Do not reuse joints which have been used once already.
CAUTION
4
REFRIGERANT PIPING
1) Use the
fl
are nut
fi
xed to the main unit. (To prevent cracking of the
fl
are nut by aged deterioration.)
2) To prevent gas leakage, apply refrigeration oil only to the inner surface of the
fl
are. (Use refrigeration oil for R32.)
3) Use torque wrenches when tightening the
fl
are nuts to prevent damage to the
fl
are nuts and gas leakage.
CAUTION
Align the centres of both flares and tighten the flare nuts 3 or 4 turns by hand. Then tighten them fully with the torque
wrenches.
1. Cautions on pipe handling
1) Protect the open end of the pipe against dust and moisture.
2) All pipe bends should be as gentle as possible.
Use a pipe bender for bending.
2. Selection of copper and heat insulation materials
When using commercial copper pipes and
fi
ttings, observe the following:
1) Insulation material: Polyethylene foam
Heat transfer rate: 0.041 to 0.052W/mK (0.035 to 0.045kcal/(mh •
˚
C)
Refrigerant gas pipe’s surface temperature reaches 110
˚
C max.
Choose heat insulation materials that will withstand this temperature.
2) Be sure to insulate both the gas and liquid piping and to provide insulation dimensions as below.
Piping size, mm (in) Minimum bend
radius
Piping thickness Thermal insulation
size
Thermal insulation
thickness
6.40 (1/4")
30mm or more
0.8mm
(C1220T-O)
I.D. 8-10mm
10mm Min.
9.52 (3/8")
30mm or more
I.D. 12-15mm
12.70 (1/2")
40mm or more
I.D. 14-16mm
15.88 (5/8")
50mm or more
1.0mm
(C1220T-O)
I.D. 16-20mm
19.05 (3/4")
50mm or more
I.D. 20-24mm
3) Use separate thermal insulation pipes for gas and liquid refrigerant pipes.
Ø Tube, D
A (mm)
Inch
mm
Imperial
(Wing-nut Type)
Rigid
(Clutch Type)
1/4"
6.40
1.3
0.7
3/8"
9.52
1.6
1.0
1/2"
12.70
1.9
1.3
5/8"
15.88
2.2
1.7
3/4"
19.05
2.5
2.0
Flare’s inner surface
must be
fl
aw-free
The pipe end must
be evenly
fl
ared in
a perfect circle.
Make sure that the
fl
are nut is
fi
tted.
Check
[Apply oil]
Apply refrigeration oil to the
inner surface of the
fl
are.
Do not apply refrigeration
oil to the outer surface.
Do not apply refrigeration oil to
the
fl
are nut to avoid tightening
with excessive torque.
Flare nut
[Tighten]
Torque wrench
Spanner
Pipe union
Flare nut
Wall
Rain
Be sure to
place a cap.
If no
fl
are cap is
available, co ver the
fl
are mouth with tape to
keep dirt or water out.
Pipe Size, mm (in) Torque, Nm/(ft-lb)
6.40 (1/4")
18 (13.3)
9.52 (3/8")
42 (31.0)
12.70 (1/2")
55 (40.6)
15.88 (5/8")
65 (48.0)
19.05 (3/4")
78 (57.6)
Inter-unit wire
Drain hose
Liquid pipe
insulation
Gas pipe
insulation
Finishing tape
Gas pipe
Liquid pipe
Summary of Contents for FTXC20BV1B
Page 2: ......
Page 30: ...1 28 MEMO...
Page 58: ...2 28 MEMO...
Page 86: ...3 28 MEMO...
Page 114: ...4 28 MEMOR NDUM...
Page 142: ...5 28 M MO...
Page 170: ...6 28 ZET...
Page 172: ...7 2 FTXC20 25 35 50 785 250 288 FTXC60 71 1005 288 297...
Page 174: ...7 4 RXC71 930 695 66 12 610 241 350 23 350 75 98...
Page 175: ...7 5 R32 DAIKIN AIR CONDITIONER...
Page 176: ...7 6 R32 2 3 1 1 X 2 R32...
Page 177: ...7 7 ON OFF OFF...
Page 179: ...7 9 1 1 AAA 2 T T 1 M3 16L 2 2 1 1 1 1 1 2 3 7...
Page 180: ...7 10 3 2000...
Page 183: ...7 13 2 1 65 2 3 4 65 3 1 2 3 4 5 6...
Page 184: ...7 14 1 2 3 1 2 3 4 5 6 Mounting plate 7 8 M4 12L 1 50 M4 12L 2 4...
Page 185: ...7 15 50 50 55 4 16 16 16 16 16 16...
Page 192: ...7 22 R32 13 25 OFN...
Page 193: ...7 23 a b c d e f g h 80 i j k...
Page 194: ...7 24 1 2...
Page 195: ...7 25 ON OFF 1 OFF ON 2 1 LED INDICATOR LIGHTS ON OFF SWITCH MODE DISPLAY IR RECEIVER TIMER...
Page 197: ...7 27 10 CO2 GWP 1000 1 2 PCB 10 3...
Page 198: ...7 28...
Page 200: ...8 2 FTXC20 25 35 50 785 250 288 FTXC60 71 1005 288 297 mm mm...
Page 202: ...8 4 RXC71 930 695 66 12 610 241 350 23 350 75 98 mm...
Page 203: ...8 5 R32 DAIKIN AIR CONDITIONER...
Page 204: ...8 6 R32 2 3 1 m 1m Xm2 R32...
Page 205: ...8 7 OFF...
Page 207: ...8 9 1 1 AAA 2 T T 1 M3 16L 2 2 1 1 1 1 inverter 1 2 3 7...
Page 208: ...8 10 3 2000...
Page 211: ...8 13 2 1 65mm 2 3 4 A 65 3 1 2 3 4 5 6...
Page 212: ...8 14 1 2 3 1 2 3 4 5 6 7 8 M4 12L 1 4mm 50 mm VP 30 M4 12L 2...
Page 213: ...8 15 50 50 55 mm 4 16 16mm 16mm 16 16mm 16mm...
Page 220: ...8 22 t LFL R32 LFL 13 25 OFN OFN OFN OFN OFN...
Page 221: ...8 23 a b c d e f g h 80 i j k...
Page 222: ...8 24 1 2...
Page 225: ...8 27 10 CO2 GWP kg 1000 1 2 PCB 10 3...
Page 226: ...8 28...
Page 254: ...9 28 MEMO...
Page 282: ...10 28 MEMO...
Page 310: ...11 28 NOTATKI...
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