Từ ngữ viết tắt trong chuyên ngành HVAC

  1. In. Hg – Inches of mercury vacuum
  2. In. WC – Inches of Water Column
  3. JB – Junction Box
  4. KO – Knock Out
  5. KW – Kilowatts
  6. LL – Low Limit
  7. LP – Low Pressure or Liquified Petroleum
  8. LPS – Low Pressure Steam
  9. LRA – Locked Rotor Amps
  10. LWCO – Low Water Cut Off
  11. MA – Mixed Air
  12. MAT – Mixed Air Temperature
  13. MAU – Make-up Air Unit
  14. MCC – Motor Control Center
  15. MFD – Micro-Farad
  16. MP – Motor Protector
  17. MPT – Male Pipe Thread
  18. NC – Normally Closed
  19. NEC – National Electric Code
  20. NFPA – National Fire Protection Association
  21. NO – Normally Open
  22. NPT – National Pipe Thread
  23. NTC – Negative Temperature Coefficient
  24. OA – Outside Air
  25. OAT – Outside Air Temperature
  26. OP – Oil Pressure
  27. ODP – Ozone Depletion Potential
  28. PCB – Printed Circuit Board
  29. PE – Pneumatic to Electric
  30. PID – Proportional, Integral, & Derivative
  31. PRV – Pressure Reducing Valve
  32. PSC – Permanent Split Capacitor
  33. PSIA – Pounds per Square Inch Absolute
  34. PSIG – Pounds per Square Inch Gauge
  35. PT – Pressure Temperature
  36. PTAC – Portable Terminal Air Conditioner
  37. PTC – Positive Temperature Coefficient
  38. PWM – Pulse Width Modulation
  39. RA – Return Air or Reverse Acting
  40. RAT – Return Air Temperature
  41. RF – Return Fan
  42. RH – Relative Humidity
  43. RPBP – Reduced Pressure Backflow Preventer (sometimes also seen as RPZ)
  44. RPM – Revolutions Per Minute
  45. RTU – Roof Top Unit
  46. RV – Reversing Valve
  47. SA – Supply Air
  48. SAT – Supply Air Temperature
  49. SD – Smoke Damper
  50. SEER – Seasonal Energy Efficiency Ratio
  51. SF – Service Factor or Supply Fan
  52. SH – Super Heat
  53. SP – Static Pressure or Set Point
  54. SPDT – Single Pole Double Throw
  55. SPST – Single Pole Single Throw
  56. SV – Solenoid Valve
  57. TD – Temperature Difference or Time Delay
  58. TDS – Total Dissolved Solids
  59. TEV – Thermostatic Expansion Valve (sometimes also seen as TXV)
  60. Ton – Ton of refrigeration effect
  61. UH – Unit Heater
  62. UV – Ultra-Violet or Unit Ventilator
  63. VAV – Variable Air Volume
  64. VFD – Variable Frequency Drive
  65. VSD – Variable Speed Drive
  66. VVT – Variable Volume/Temperature
  67. W – Watt
  68. WB – Wet Bulb
  69. WC – Water Column
  70. XFMR – Transformer

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