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Full Description

Details test and examination criteria for Category I, Category II, Category III and Category IV low-pressure steam and hot water boilers for use with natural, manufactured and mixed gases, liquefied petroleum gases and LP gas-air mixtures. A boiler is defined in the standard as a boiler operating at or below the following pressures or temperatures: steam heating boiler - 15 psi (103.42 kPa) steam pressure; hot water heating or supply boiler - 160 psi (1.10 MPa) water pressure, 250F (121C) water temperature.
 

Document History

  1. CSA ANSI Z21.13:22/CSA 4.9:22


    Gas-fired low pressure steam and hot water boilers

    • Most Recent
  2. CSA ANSI Z21.13-2017/CSA 4.9-2017


    Gas-fired low pressure steam and hot water boilers

    • Historical Version
  3. CSA ANSI Z21.13-2014/CSA 4.9-2014


    Gas-fired low pressure steam and hot water boilers

    • Historical Version
  4. CSA ANSI Z21.13-2013/CSA 4.9-2013


    Gas-Fired Low Pressure Steam and Hot Water Boilers

    • Historical Version
  5. CSA ANSI Z21.13-2010/CSA 4.9-2010


    Gas-Fired Low Pressure Steam and Hot Water Boilers

    • Historical Version
  6. CSA ANSI Z21.13-2004/CSA 4.9-2004


    Gas-Fired Low Pressure Steam and Hot Water Boilers

    • Historical Version
  7. CSA ANSI Z21.13A-2002/CSA 4.9A-2002

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    Addenda 1 to ANSI Z21.13-2000/CSA 4.9-2000, Gas-Fired Low Pressure Steam and Hot Water Boilers

    • Historical Version
  8. CSA ANSI Z21.13-2000/CSA 4.9-2000


    Gas-Fired Low-Pressure Steam and Hot Water Boilers

    • Historical Version
  9. CSA ANSI Z21.13-1991


    Gas-Fired Low-Pressure Steam and Hot Water Boilers

    • Historical Version