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Identification guide for ammonia refrigeration piping

How To Make Right to Know Labels for Ammonia Refrigeration Piping

Ammonia Refrigeration Piping

1. Use Arrows to Indicate the Direction of Flow in the Pipe.

2. Use the Following Abbreviations to Properly Identify System Components.

BD Booster Discharge
  CD Condenser
  DS Defrost Condensate
  ES Economizer Suction
  HGD Hot Gas Defrost
  HPL High Pressure Liquid
  HSD High Stage Discharge
  HSS High Stage Suction
  HTRL High Temperature Recirculated Liquid
  HTRS High Temperature Recirculated Suction
  LTRL Low Temperature Recirculated Liquid
  LTRS Low Temperature Recirculated Suction
  LIC Liquid Injection Cooling
  LSS Low Stage Suction
  RV Relief Vent
  TSR Thermosyphon Return
  TSS Thermosyphon Supply


3. Indicate Whether the Refrigerant is a Liquid, Vapor, or Both.

LIQ - Orange Color Band Indicates Liquid State
  VAP - Blue Color Band Indicates Vapor State
  Use both color bands if both liquid and vapor may be present.

4. Print "Ammonia" in Black Letters on a Yellow Background.

5. Indicate Whether Internal Pipe Pressure is High or Low.

High - Red Color Band Indicates High Pressure
  Low - Green Color Band Indicates Low Pressure

This guide is intended for general information purposes only. This guide is not a substitute for review of applicable government regulations and standards.

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