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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BS DD 189:1990
Original price was: $160.02.$80.00Current price is: $80.00.
Specification for the safety of condensing boilers (2nd and 3rd family gases)
BSI Group , 06/29/1990
Pages: 10
