BS 7624:2004

Describes the installation of direct gas-fired tumble dryers of up to 6 Kw net heat input burning 2nd and 3rd family gases for use in permanent domestic dwellings.

This British Standard specifies the installation (see Note 1) of direct gas-fired tumble dryers of up to 6 kW net heat input burning 2nd and 3rd family gases for use in permanent domestic dwellings (see Notes 2 and 3). It applies to any such tumble dryer used in conjunction with a flexible venting hose fitted to a wall or window vent terminal or, where the net heat input does not exceed 3kW, with a venting hose hung out of a window, so that combustion products and moisture are exhausted directly to the outside air.

NOTE 1 For the purposes of this standard, installation includes design, inspection and commissioning. It is recognized that each of these tasks can be performed by the same person.

NOTE 2 As well as normally constructed dwellings, domestic premises include any permanently sited caravans, holiday homes, residential park homes and permanently moored boats. Additional requirements exist for these categories of premises and can be found in IGE/UP/8 [8]. Neither this standard nor IGE/UP/8 [8] applies to gas installations in towed or motorised caravans.

NOTE 3 Whilst this standard specifies installations in domestic premises, it is recognized that it might also be referred to for similar installations in commercial and industrial premises. In such cases, additional legislation might be applicable. Attention is drawn to the hazards that exist in certain locations, e.g. hairdressing salons, where the atmosphere or drying load can contain flammable vapours.