• BS DD 189:1990

BS DD 189:1990

Specification for the safety of condensing boilers (2nd and 3rd family gases)

BSI Group , 06/29/1990

Publisher: BS

File Format: PDF

$80.00$160.02


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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