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BS 6644 2011 Edition, November 30, 2011
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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)
Includes all amendments and changes through Reaffirmation Notice , November 1, 2016
Additional Comments: INCLUDES CORRIGENDUM
Page Count:66
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