Tadiran Telecom SUV2-H18/1CFA-N Service Manual page 26

Installation Manual Installation Manual
Table 6 Dimension of the Refrigerant Pipe of the Indoor Unit
Capacity Level of the Indoor Unit
● Piping between the Indoor and Outdoor units
1. Refer to Table 7 for the moments of torque for tightening screws.
2. Let the fl are end of the copper pipe point at the screw and then tighten the screw by hand.
3. After that, tighten the screw by the torque wrench unit it clatters (as shown in Fig.3).
4. The bending degree of the pipe cannot be too small, otherwise it will crack. And please use a pipe tube bender to
bend the pipe.
5. Wrap the exposed refrigerant pipe and the joints by sponge and then tighten them with the plastic tape.
Table 7 Moments of Torque for Tightening Screws
CAUTION!
1. During the connection of the indoor unit and the refrigerant pipe, never pull any joints of the indoor unit by force,
otherwise the capillary pipe or other pipe may crack, which then would result in leakage.
2. The refrigerant pipe should be supported by brackets, that is, don't let the unit withstand the weight of it.
CAUTION!
For the MULTI-S inverter air conditioner unit, each pipe should be labeled to tell which system it belongs to avoid mistaken
inaccurate piping.
● Installation of the Protection Layer of the Refrigerant Pipe
1. The refrigerant pipe should be insulated by the insulating material and plastic tape in
order to prevent condensation and water leakage.
2. The joints of the indoor unit should be wrapped with the insulating material and no gap
is allowed on the joint of the indoor unit, as shown in Fig.4.
CAUTION!
After the pipe is protected well enough, never bend it to form a small angle, otherwise it would crack or break.
● Wrap the Pipe with Tape
1. Bundle the refrigerant pipe and electric wire together with tape, and separate them from the drain pipe to prevent the
condensate water overfl owing.
2. Wrap the pipe from the bottom of the outdoor unit to the top of the pipe where it enters the wall. During the wrapping,
the later circle should cover half the former one.
3. Fix the wrapped pipe on the wall with clamps.
22
07、09、12
18
24
Pipe Flare Nut Pipe
Diameter (mm)
Φ6.35
Φ9.52
Φ12.7
Φ15.9
Gas Pipe (mm)
Φ9.52
Φ12.7
Φ15.9
Torque
Wrench
Fig.3
Pipe
Wall Thickness (mm)
≥0.5
≥0.71
≥1
≥1
Liquid pipe (mm)
Φ6.35
Φ6.35
Φ6.35
Ordinary
Wrench
Flare Nut
Pipe
Moment of Torque (N . m)
15-30
30-40
45-50
60-65
No gap Fig.4