BS_5864-2004.pdf

BS5864:20041 ScopeThis British Standard specifies the selection,installation and maintenance(see Note 1)of flued,gas-fired,ducted-air heaters of rated input not exceeding 70 kW,based on net calorific value,burning 2nd or 3rdfamily gases to heat one or more rooms or internal spaces in either domestic premises(see Note 2)orcommercial premises.It is applicable to warm air heaters that incorporate a fan to circulate the warm air.It is also applicable to combined air heater/circulator installations and to the servicing and maintenance ofheaters that distribute warm air by natural convection(see Annex A).NOTE 1 For the purposes of this standard,installation includes design,inspection and commissioning.It is recognised that each ofthese tasks can be performed by the same person.NOTE 2 As well as normally constructed dwellings,domestic premises include any permanently sited leisure accommodationvehicles,residential park homes and permanently moored boats.Particular and additional requirements exist for these categories ofpremises and can be found in IGE/UP/8 10.Neither this standard nor IGE/UP/8 10applies to gas installations in towed ormotorised caravans2 Normative referencesThe following referenced documents are indispensable for the application of this document.For datedreferences,only the edition cited applies.For undated references,the latest edition of the referenceddocument(including any amendments)applies.BS 5440-1,Installation and maintenance of flues and ventilation for gas appliances of rated input notexceeding 70 kW net(Ist,2nd and 3rd family gases)-Part 1:Specification for installation andmaintenance of flues.BS 5440-2,Installation and maintenance of flues and ventilation for gas appliances of rated input notexceeding 70 kW net(Ist,2nd and 3rd family gases)-Part 2:Specification for installation andmaintenance of ventilation for gas appliances.BS 5482-1,Domestic butane-and propane-gas-burning installations-Part 1:Specification forinstallations at permanent dwellings.BS 5482-2,Domestic butane-and propane-gas-burning installations-Part 2:Code of practice forinstallations in caravans and non-permanent dwellings.BS 5546,Specification for installation of hot water supplies for domestic purposes,using gas-firedappliances of rated input not exceeding 70 kW.BS 5871-3,Specification for the installation of gas fires,convector heaters,fire/back boilers and decorativefuel effect gas appliances-Part 3:Decorative fuel effect gas appliances of heat input not exceeding 20 kW(2nd and 3rd family gases).BS 6891,Specification for installation of low pressure gas pipework of up to 28 mm(R1)in domesticpremises(2nd family gas).BS 7671,Requirements for electrical installations-IEE Wiring Regulations.BS EN 1949,Specification for the installation of LPG systems for habitation purposes in leisureaccommodation vehicles and in other road vehicles.3 Terms and definitionsFor the purposes of this British Standard,the following terms and definitions apply.3.1air heaterappliance for heating air to be used for space heatingNOTE Hereinafter referred to as heater.3.2air ventnon-adjustable,purpose-provided unit/assembly designed to allow permanent ventilationBSI10 December2004