BS EN 676:2020 pdf free.Forced draught burners for gaseous fuels.
BS EN 676 1 Scope This document specifies the terminology, the general requirements for the construction and operation
of forced draught gas burners and also the provision of control and safety devices, and the test procedure for these burners.
This document is applicable to: automatic gas burners with a combustion air fan (hereinafter called “burners”) and gas line
components, intended for use in appliances of different types, and that are operated with gaseous fuels; 一pre-mixed burners and nozzle mixed burners; – single burners with a single combustion chamber;  -single-fuel and dual-fuel burners when operating only on gas; the gas function of dual-fuel burners designed to operate simultaneously on gaseous and liquid fuels, which, for the latter, the requirements of EN 267 also apply. This document deals with all significant machine hazards, hazardous situations and events relevant to burners, when they are used as intended and under conditions of misuse which are reasonably
foreseeable, see Annex ]. This document specifies the requirements to ensure the safety during commissioning, start-up,
operation, shut-down and maintenance. This document does not apply to burners specifically designed for use in industrial processes carried out on industrial premises. This document deals also with the additional requirements for the burners in the scope with
pressurized parts and /or firing pressurized bodies, see Annex K. This document deals also with forced draught burners intended to be used with biogenous gaseous  fuels, mixtures with line-conveyed gas and special gaseous fuels. This document deals also with  urners and their equipment to increase the total appliance efficiency, see Annex M. 2，Normative references The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments)  pplies. EN 88-1:201 1+A1:2016, Pressure regulators and associated safety devices for gas appliances一Part 1: Pressure regulators for inlet pressures up to and including 50 kPa EN 88-2:2007, Pressure regulators and associated safety devices for gas appliances一 Part 2: Pressure regulators for inlet pressures above 500 mbar up to and including 5 bar EN 126:2012, Multifunctional controls for gas burning appliances .BS EN 676 pdf download.