BS 5546:2010
Specification for installation and maintenance of gas-fired water-heating appliances of rated input not exceeding 70 kW net

Standard No.

BS 5546:2010

Release Date

2010

Published By

British Standards Institution (BSI)

Latest

BS 5546:2010

Replace

09/30166542 DC-2009 BS 5546:2000

Scope

This British Standard specifies requirements for the selection, installation, inspection, commissioning and maintenance of gas‑fired water-heating appliances, which have a rated heat input not exceeding 70 kW, based on net calorific value. It applies to water-heating appliances utilizing 1st, 2nd or 3rd family gases designed to operate in the condensing or non‑condensing mode for the supply of hot water for domestic purposes in domestic dwellings or domestic dwellings in commercial premises. This standard does not apply to: a) water-heating appliances with a rated input of over 70 kW; b) hot water supply systems in multiple dwellings supplied from a central source. It does not cover the detailed design and installation of the whole hot water distribution system, which was specified in BS 5449. This standard applies to water-heating appliances which carry a CE mark and also to previously used water-heating appliances which do not carry the CE mark (see 5.3.1).

BS 5546:2010 Referenced Document

• BS 1179 Glossary of terms used in the gas industry
• BS 1566-2 Copper indirect cylinders for domestic purposes — Part 2 : Specification for single feed indirect cylinders
• BS 2879 Specification for Draining taps (screw - down pattern)
• BS 3198 Specification for Copper hot water storage combination units for domestic purposes
• BS 476-4 Fire tests on building materials and structures — Part 4 : Non - combustibility test for materials
• BS 5422 Thermal insulating materials for pipes, tanks, vessels, ductwork and equipment operating within the temperature range –40 °C to +700 °C. Method for specifying*， 2022-11-30 Update
• BS 5871-1 Specification for the installation and maintenance of gas fires, convector heaters, fire/back boilers and decorative fuel effect gas appliances - Gas fires, convector heaters, fire/back boilers and heating stoves (2nd and 3rd family gases)
• BS 5970 Thermal insulation of pipework, ductwork, associated equipment and other industrial installations in the temperature range of -100°C to +870°C. Code of practice*， 2012-09-30 Update
• BS 6283-2 Safety and control devices for use in hot water systems — Part 2 : Specification for temperature relief valves for pressures from 1 bar to 10 bar
• BS 6700 Design, installation, testing and maintenance of services supplying water for domestic use within buildings and their curtilages Specification
• BS 6891 Specification for the installation and maintenance of low pressure gas installation pipework of up to 35 mm (R1¹₄) on premises*， 2019-07-31 Update
• BS 7671 Requirements for Electrical Installations. IET Wiring Regulations*， 2022-03-28 Update
• BS EN 12828 Heating systems in buildings. Design for water-based heating systems*， 2012-01-01 Update
• BS EN 12897 Water supply. Specification for indirectly heated unvented (closed) storage water heaters*， 2016-01-01 Update
• BS EN 1490 Building valves - Combined temperature and pressure relief valves - Tests and requirements
• BS EN 50379-3 Specification for portable electrical apparatus designed to measure combustion flue gas parameters of heating appliances. Performance requirements for apparatus used in non-statutory servicing of gas fired heating appliances*， 2012-04-30 Update

BS 5546:2010 history

• 2010 BS 5546:2010 Specification for installation and maintenance of gas-fired water-heating appliances of rated input not exceeding 70 kW net
• 2000 BS 5546:2000 Specification for installation of hot water supplies for domestic purposes, using gas-fired appliances of rated input not exceeding 70 kW