1 Scope
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a) within a builder’s opening and/or fireplace recess and which may, additionally, be suitable for installation in a purpose designed metal flue box conforming to BS 715 and flue conforming to the constructional and temperature requirements of BS EN 1856‑1 and BS EN 1856‑2; or
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b) using a direct flue connection, if specified in the manufacturer’s instructions; or
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c) in the case of a room sealed appliance, using a flue terminal/air duct assembly supplied by the appliance manufacturer.
NOTE 1 Inset live fuel effect gas fires differ from decorative fuel effect gas appliances, which burn gas so as to simulate a solid fuel fire or produce other decorative effects, in that they incorporate a heat exchanger and restrict the passage of the products of combustion between the appliance firebed and the chimney or flue. The only decorative fuel effect gas appliances covered by this part of BS 5871 are those shown in Figure 1b) and detailed in 1d) of the commentary and recommendations on Clause 5 of this standard.
NOTE 2 Unless the context requires otherwise, inset live fuel effect gas fires are hereinafter referred to as fires.
NOTE 3 Heat inputs in this document are based on net calorific value. Figures based on gross calorific value are given in parenthesis where deemed necessary. See also Clause 5, commentary and recommendations g).
NOTE 4 Attention is drawn to the foreword concerning the installation of used appliances.
NOTE 5 As well as normally constructed dwellings, domestic premises include any permanently sited caravan holiday homes, residential park homes and permanently moored boats. See IGE/UP/8 [8].
NOTE 6 BS 5449 has been partly replaced by BS EN 12828 and BS EN 12831, and is to be withdrawn once BS EN 14336 and BS EN 14337 are published.