BS 5978-2:1989 - Safety and performance of gas-fired hot water boilers (60 kW to 2 MW input) - Specification for additional requirements for boilers with atmospheric burners
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This Part of BS 5978 specifies the additional requirements
that, together with those in BS 5978: Part 1, apply to the
following gas-fired hot water boilers that are within the
scope of BS 5978: Part 1.
(a) boilers with atmospheric burners but not
incorporating a fan;
(b) boilers of heat input 150 kW and below with a
non-automatic atmospheric burner system together with
a fan located downstream of the combustion chamber
but upstream of any draught diverter.
BS 5978-2:1989 - Safety and performance of gas-fired hot water boilers (60 kW to 2 MW input) - Specification for additional requirements for boilers with atmospheric burners