Appendix: Installation
5.REFRIGERANT TUBE
5.1 Flaring the tube
(1)Cut the tube with a tube cutter to the desired length (30.50cm is recommended)
(2)Smooth the edge of the copper tube with a reamer or a file. Hold the pipe vertically with one end downward to make sure that no copper scraps fall into the copper tube.
Copper | Before |
| After |
tube
Reamer
Figure 18a | Figure 18b |
(3)Put the tube flarer on the copper tube.
(4)Flare the copper tube ( Figure 19)
Tapered nuts
Copper tube
Flarer
Figure 19
Note: The flared tube should have:
Smo oth internal surface
Smooth edges
C onsistent length of the tapered surface
5.2 Connection of the tubes
(1)The sealing tube must be used to prevent dust or water from getting into the tube.
(2)Before connecting the tube, apply some refrigerant oil on the surface of the flared tube and connections to prevent air leakage.( Figure 20)
(3)Align the connecting tube and the flared tube, and then turn the tapered nut to connect tightly. (Figure 21)
Application
of refrigerant oil Connecting Flared tube tube
Figure 21
(4) Fasten the nuts with a spanner.
5.3 Heat insulation of the refrigerant tube
All refrigerant tubes must be insulated heat with at least 8mm thick insulation materials. (Figure 22)
Heat insulation materials
Min. 8mm | Thickness | |
of 8mm | ||
| ||
| Figure 22 |
5.4 Wrapping the tubes
(1)Tie the two refrigeration tubes (including electrical wire if permitted as regulated), water drainage hose with white tape.
(2)Wrap half of the tubes outside the room starting from the end. (Figure 23)
Clip
Covering tubes with heat insulation materials
Figure 23
(3)Fix the wrapped tubes on the wall in clips with a space of 120cm.
Note: Do not tie the tubes too tight as this may reduce heat insulation. Separate water drainage hose and refrigeration tubes to prevent formation of water droplets.
5.5 Ending of installation
After completion of wrapping and insulation, seal the hole on the wall with a suitable sealant.
5.6 Discharge gas
Place appliance A and then B. Air purging method is as follows:
(1)Turn down the nuts on the wide and narrow tubes.
(2)Loose the nut of the flared wide tube one complete turn with a spanner.
(3)Turn counterclockwise to open the core of the valve with a socket screw wrench. Some gas will come out from under the nut of the flared end of the wide tube. Tighten the nut 10 to 15 seconds later.
(4)Test for leakage at the tube connector with soapy water or a meter. If there is no leakage, turn counterclockwise to open the tube core of the valve on the wide tube with a socket screw wrench.
(5)Tighten the nuts on the wide , narrow tube valves and the valve cover.
Please contact the technical service for further information.
26
