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Document History

  1. BS 6644:2011


    Specification for the installation and maintenance of gas-fired hot water boilers of rated inputs between 70 kW (net) and 1.8 MW (net) (2nd and 3rd family gases)

    • Most Recent
  2. BS 11/30229801 DC


    BS 6644. Specification for the installation of gas-fired hot water boilers of rated inputs between 70kW (net) and 1.8 MW (net) (2nd and 3rd family gases)

    • Historical Version
  3. BS 6644:2005+A1:2008


    Specification for installation of gas-fired hot water boilers of rated inputs of between 70kW (net) and 1.8 MW (net) (2nd and 3rd family gases)

    • Historical Version
  4. BS 6644:2005


    Specification for Installation of gas-fired hot water boilers of rated inputs between 70 kW (net) and 1.8 MW (net) (2nd and 3rd family gases)

    • Historical Version
  5. BS 6644:1991


    Specification for installation of gas-fired hot water boilers of rated inputs between 60 kW and 2 MW (2nd and 3rd family gases)

    • Historical Version
  6. BS 6644:1990


    Specification for installation of gas-fired hot water boilers of rated inputs between 60 kW and 2 MW (2nd and 3rd family gases)

    • Historical Version
  7. BS 6644:1986

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    Specification for installation of gas-fired hot water boilers of rated inputs between 60 kW and 2 MW (2nd and 3rd family gases)

    • Historical Version
  8. BS CP 332-3:1970


    Selection and installation of town gas space heating.-Boilers of more than 150 000 Btu/h (44 kW) and up to 2 000 000 Btu/h (586kW) output

    • Historical Version