DD 189:1990
Date published:
Specification for the safety of condensing boilers (2nd and 3rd family gases)
Requirements and associated methods of test for central heating boilers designed to utilise a proportion of the latent heat of condensation of the water vapour in the combustion products.
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27.060.30 Boilers and heat exchangers
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DD 189:1990
Get this standard
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PDF
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