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MDS Installation

MDS Installation. Contents. Introduction Outdoor Unit Installation Indoor Unit Installation Refrigerant Pipe Work Gas Charge Wiring Summary. Introduction. Bad installation – System will not operate as per design Waste of Money Waste of Time Bad Image 3 Major Categories

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MDS Installation

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  1. MDS Installation

  2. Contents • Introduction • Outdoor Unit Installation • Indoor Unit Installation • Refrigerant Pipe Work • Gas Charge • Wiring • Summary

  3. Introduction

  4. Bad installation – System will not operate as per design Waste of Money Waste of Time Bad Image 3 Major Categories Unit Installation Piping Installation Wiring Installation INSTALLATION

  5. Outdoor Unit Installation

  6. Outdoor Unit Installation • Outdoor Unit Installation • Sufficient area around the unit. No barrier for supply air and discharge air. • Avoid discharge air return to the unit (Hot Air short-circuiting) • Strong foundation for the unit

  7. Outdoor Unit Installation Handling Outdoor Unit Correct

  8. Outdoor Unit Installation Handling Outdoor Unit Wrong

  9. Outdoor Unit Installation Correct Wrong

  10. Outdoor Unit Installation

  11. Outdoor Unit Installation Outdoor Unit Spacing (Single Unit) Wall / Barrier lower than unit Wall / Barrier higher than unit Side View

  12. Outdoor Unit Installation Outdoor Unit Spacing (Single Unit) Top View (Barrier higher than unit)

  13. Outdoor Unit Installation Outdoor Unit Spacing (Single Unit) Top View (Barrier lower than unit)

  14. Outdoor Unit Installation Outdoor Unit Spacing (More than 1 unit) Top View (Wall / Barrier restriction same as 1 outdoor unit)

  15. Outdoor Unit Installation Outdoor Unit Spacing (More than 1 unit) Top View (Wall / Barrier restriction same as 1 outdoor unit)

  16. Outdoor Unit Installation Outdoor Unit Spacing (More than 1 unit) Top View (Wall / Barrier restriction same as 1 outdoor unit)

  17. Outdoor Unit Installation • Outdoor Unit Foundation • Floor location strength • - Able to withstand the unit weight and vibration

  18. Outdoor Unit Installation • Outdoor Unit Foundation • Layout for drainage, piping & cables • - Different level, avoid blocking Balance piping connection Gas and liquid piping connection

  19. Outdoor Unit Installation • Outdoor Unit Foundation • Screw bolt required to further tighten the unit • - Avoid the unit from falling due to earthquake

  20. Indoor Unit Installation

  21. Indoor Unit Installation • Drainage Pipe Work • Adjust the downward gradient Gradient of 1:100 or more

  22. Indoor Unit Installation Clamp of drain pipe Vent opening ≥ 1/100 Gradient 100mm ≥ Converged drain pipe • Drainage Pipe Work • Group drain pipe

  23. Indoor Unit Installation • EXV Box Installation • MUST install vertically upward

  24. Unit and EXV Selection - 2006

  25. Unit and EXV Selection - 2006

  26. Unit and EXV Selection - New Marketing Bulletin: MBA001-0801

  27. Unit and EXV Selection - New Marketing Bulletin: MBA001-0801

  28. Indoor Unit Installation • EXV Box Installation • 3 types of mounting methods 2 1 3

  29. Indoor Unit Installation EXV Box Installation

  30. Indoor Unit Installation EXV Box Installation

  31. Refrigeration Pipe Work

  32. Refrigerant Pipe Work • Piping Installation • Ensure piping is dry, clean and no air leakage

  33. Refrigerant Pipe Work • Piping Installation • Nitrogen gas replacement Nitrogen gas pressure: about 0.02 MPa (0.2 kg/cm2, 2.8 psi)

  34. Refrigerant Pipe Work • Piping Installation • Covering of refrigerant pipes • - Prevent water, dirt or dust from getting into the pipes Pinching Taping Method

  35. Refrigerant Pipe Work • Piping Installation • Covering of refrigerant pipes

  36. Refrigerant Pipe Work • Piping Installation • Covering of refrigerant pipes

  37. Refrigerant Pipe Work • Piping Installation • Connection

  38. Refrigerant Pipe Work In ±15° In ±15° • Piping Installation • Refnet & distributors joints to be install horizontally

  39. Refrigerant Pipe Work • Piping Installation • Refnet & distributors joints to be install horizontally

  40. Refnet Joint Refrigerant Pipe Work Connection Type of Refnet Joint/Distributors Allow

  41. Distributor Refrigerant Pipe Work Connection Type of Refnet Joint/Distributor Allow

  42. Refrigerant Pipe Work Connection Type of Refnet Joint/Distributors Allow Refnet Joint Distributor

  43. Refrigerant Pipe Work Connection Type of Refnet Joint/Distributors Not Allow Refnet Joint Distributor

  44. Refrigerant Pipe Work • Thermal Insulation Work • Insulation material must be able to withstand the pipe heat • - Heat pump unit – heat resistance polyethylene foamed (> 120°C) • - Cooling only unit – polyethylene (> 100°C) • Insulation method • Thickness of insulation

  45. Refrigerant Pipe Work Insulation Finishing tape Liquid pipe Control wire Gas pipe • Thermal Insulation Work • Both liquid and gas pipe MUST be insulated

  46. Refrigerant Pipe Work Thermal Insulation Work Correct Method Wrong Method

  47. Refrigerant Pipe Work • Thermal Insulation Work • Insulation thickness • Notes: • Hot and wet environment, increase then thickness of the insulation

  48. Refrigerant Pipe Work • Thermal Insulation Work • Connection pipes should be properly fix

  49. Gas Charge

  50. Gas Charge • Additional Refrigerant Charge • The amount of additional charge must be determined by the equation with the total length of liquid pipe. • After calculation, the amount of additional charge should be recorded to the reverse side of the of the outdoor unit control box cover. • Put in liquid state refrigerant from the liquid port to connect the cylinder by using weight scale.

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