Gas-fired central heating boilers - Specific standard for type C appliances and type B2, B3 and B5 appliances of a nominal heat input not exceeding 1 000 kW1 Scope This European Standard specifies, the requirements and test methods concerning, in particular, the construction, safety, fitness for purpose, and rational use of energy, as well as the classification and marking of gas fired central heating boilers that are fitted with atmospheric burners, fan assisted atmospheric burners or fully premixed burners, and are hereafter referred to as boilers. Where the word boiler is used, it needs to be read as

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BS 5194-3 also provides a method of test for corrosion resistance using copper sulphate solution and a method of test for corrosion resistance using boiling water of dissecting forceps

BS EN 61158-5-21 provides the common elements for basic time-critical and non-time-critical messaging communications between application programs in an automation environment as well as material specific to the Type 21 protocol

What is BS 4163 about

This British standard aims to help its users to meet the production requirements for double-ended open-jawed spanners

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and others

0 mm ≤ t ≤ 6

mechanical resistance to shock

It is used in such applications as telephone trunk lines

Manufacturers of storage batteries

This includes having processes in place to detect and eradicate significant and recurrent issues