1. Service Section Technical Training

2. Good Air Conditioning Installation Practices

3. Contents Location of installationLocation of installation PipingPiping CleanlinessCleanliness ElectricalElectrical Refrigerant CircuitRefrigerant Circuit

4. Storage and Transportation

5. Condensing units must be stored and transport in an upright positionCondensing units must be stored and transport in an upright position

6. Storage and Transportation The air conditioner should not be over-stackThe air conditioner should not be over-stack Prevent drop of unitPrevent drop of unit

7. Location of Installation

8. Indoor unit Ceiling too highCeiling too high

9. Location of Installation Indoor unit Unit installed in an enclosed areaUnit installed in an enclosed area

10. Location of Installation Indoor unit Dirty or chemically hazardous environmentDirty or chemically hazardous environment

11. Location of Installation Indoor unit Avoid high electrical interference environment ( infra red bar code scanning machine, lighting with electronic ballast)Avoid high electrical interference environment ( infra red bar code scanning machine, lighting with electronic ballast)

12. Location of Installation Indoor unit No service openingNo service opening

13. Location of Installation Indoor unit Duct work too shortDuct work too short

14. Location of Installation Outdoor unit Select a suitable installation siteSelect a suitable installation site A place where …... …… Easy for service

15. Location of Installation Outdoor unit Select a suitable installation siteSelect a suitable installation site A place where …... …… Comply to installation clearance

16. Location of Installation Outdoor unit Select a suitable installation siteSelect a suitable installation site A place where …... …… Do not block the air discharge

17. Location of Installation Outdoor unit Select a suitable installation siteSelect a suitable installation site A place where …... …… The return air is not short cycle

18. Location of Installation Outdoor unit Select a suitable installation siteSelect a suitable installation site A place where …... …… To avoid strong wind

19. Location of InstallationDrainage A proper drainage system is crucialA proper drainage system is crucial

20. Location of InstallationDrainage A proper drainage system must be slopedA proper drainage system must be sloped

21. Location of InstallationDrainage Beware of where it endsBeware of where it ends

22. Location of InstallationDrainage Proper length is crucialProper length is crucial

23. Piping

24. Piping Keep the piping as short as possibleKeep the piping as short as possible

25. Piping Provide oil traps if height of installation exceed 10mProvide oil traps if height of installation exceed 10m 10m 5m Condenser Evaporator Condenser Evaporator

26. Piping Insulate the pipe and insulate it separatelyInsulate the pipe and insulate it separately

27. Piping Bend the pipe using pipe bender instead of hands.Bend the pipe using pipe bender instead of hands.

28. Piping Do not size up or size down the pipe (especially for heatpump model)Do not size up or size down the pipe (especially for heatpump model) >Pipe size up - refrigerant velocity down >Pipe size up - more refrigerant needed - refrigerant floodback >Pipe size up - dilution of oil

29. Cleanliness

30. Cleanliness Do not expose pipes or components to environment over an prolong period.Do not expose pipes or components to environment over an prolong period.

31. Cleanliness Keep moisture out of pipes or componentsKeep moisture out of pipes or components

32. Cleanliness When laying pipes through walls, end of pipes must be properly sealedWhen laying pipes through walls, end of pipes must be properly sealed

33. Cleanliness When cutting a copper pipe, use copper cutter instead of saw.When cutting a copper pipe, use copper cutter instead of saw.

34. Cleanliness Always vacuum before charge in refrigerantAlways vacuum before charge in refrigerant

35. Cleanliness Always braze with present of nitrogenAlways braze with present of nitrogen

36. Electrical

37. Electrical Remote control wiring should be separated from power cableRemote control wiring should be separated from power cable

38. Electrical Screw must be tight at terminalsScrew must be tight at terminals

39. Electrical Examine the power sourceExamine the power source Determine the maximum load the power source can handleDetermine the maximum load the power source can handle

40. Refrigerant Circuit

41. Proper leak checkProper leak check Properly charge the systemProperly charge the system For no pre-charge system which is using scroll compressor, must contain 80% charge before startFor no pre-charge system which is using scroll compressor, must contain 80% charge before start For system that using TXV, make sure the TXV is properly installedFor system that using TXV, make sure the TXV is properly installed

42. Thank you