1-5
English
Piping Works And Flaring Technique
Do not use contaminated or damaged copper tubing. If any
piping, evaporator or condenser had been exposed or had
been opened for 15 seconds or more, vacuum the system.
Generally, do not remove plastic, rubber plugs and brass
nuts from the valves, fittings, tubings and coils until it is
ready for connection.
If any brazing work is required, ensure that the nitrogen gas
is passed through piping and joints while the brazing work
is being done. This will eliminate soot formation on the
inside walls of the copper tubings.
Cut the pipe stage by stage, advancing the blade of pipe
cutter slowly. Extra force and deep cut will cause more
distortion of pipe and therefore extra burr.
Remove burrs from cut edges of pipes with a remover as
shown in Fig. R. This will avoid unevenness on the flare
faces which will cause gas leak. Hold the pipe on top position
and burr remover at lower position to prevent metal chips
from entering the pipe.
Insert the flare nuts mounted on the connection parts of both
indoor and outdoor unit, into the copper pipes.
The exact length of pipe protruding from the face of the
flare die is determined by the flaring tool.
Fix the pipe firmly on the flare die. Match the centers of
both the flare die and the flaring punch, and tighten flaring
punch fully.
1/4t
Cutting Copper Tube
Copper Tube
Swaging Block
Ø Tube, D
A (mm)
Inch
mm
Imperial
Rigid
1/4"
6.35
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
Piping Connection To The Units
Align the center of the piping and sufficiently tighten the
flare nut with fingers.
Finally, tighten the flare nut with torque wrench
until the wrench clicks.
When tightening the flare nut with the torque wrench,
ensure that the direction for tightening follows the arrow on
the wrench.
The refrigerant pipe connection are insulated by
polyurethane (ARMAFLEX type or similar).
!
Caution
ELECTRICAL CONNECTION
Cooling Only Units, CC 10 / 15 / 20 / 25 C
Indoor unit
CC 10C
CC 15C
CC 20C
CC 25C
Outdoor unit
SL 10B
SL 15B
SL 20B
SL 25B
Voltage range**
220V–240V /1Ph /50Hz +
!
or 208V–230V /1Ph /60Hz +
!
Recommended fuse*
A
10
10
16
20
Power supply cable size*
mm
2
1.5
1.5
2.5
2.5
Number of conductors
3
3
3
3
Interconnection cable size*
mm
2
1.5
1.5
2.5
2.5
Number of conductors
3
3
3
3
Ensure the color of wires of the outdoor unit and the terminal markings are same to
the indoors respectively.
Pipe Size, mm (in)
Torque (Nm)
6.35 (1/4)
18
9.53 (3/8)
42
12.7 (1/2)
55
15.88 (5/8)
65
19.05 (3/4)
78
Spanar
Torque Wrench
Indoor Piping
Flare Nut
Flared Tube
Flare Joint
Fig. R
Remove Burr
Copper Tube
Summary of Contents for A08019025457
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