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LARGE COMBUSTION APPLIANCE INSTALLATIONS
(F2.1) The requirements of F2.1 will be met where the large combustion appliance installation is constructed and installed in accordance with the guidance contained in the Chartered Institution of Building Service Engineers (CIBSE) Design Guide and the Practice Standards produced by the British Standards Institution (BSI) and the Institution of Gas Engineers (IGE).
GENERAL REQUIREMENTS FOR SMALL COMBUSTION APPLIANCE INSTALLATIONS
(F3.1) The requirements of F3.1 will be met where -
a. the solid fuel appliance installation is in accordance with BS8303: Parts 1 to 3: 1994;
b. the oil-fired appliance installation is in accordance with BS5410: Part 1: 1997 or BS5410: Part 2: 1978 as appropriate;
c. the gas-fired appliance installation is in accordance with -
i. the requirements of the Gas Appliances (Safety) Regulations 1995, and
ii. the Gas Safety (Installations & Use) Regulations 1998.
REMOVAL OF PRODUCTS OF COMBUSTION
(F3.4) The requirements of F3.4b will be met by a terminal guard that will prevent a sphere more than 16mm from passing through and has no sharp edges.
PROTECTION FROM PRODUCTS OF COMBUSTION
(F3.5) The requirements of F3.5a will be met where the chimney is constructed and installed in accordance with BS6461: Part 1: 1984.
The requirements of F3.5b will be met where the chimney is constructed and installed in accordance with -
a. for a precast concrete flue-block chimney, Clause 5.6 of BS6461: Part 1: 1984;
b. for a precast concrete flue-block chimney serving a gas-fired appliance, BS1289: Part 1: 1986;
c. for a clay flue-block chimney serving a gas-fired appliance, BS1289: Part 2: 1989.
(F3.6) The requirements of F3.6 will be met where the factory-made chimney is manufactured in accordance with -
a. BS4543: Part 2: 1990;
b. where it serves a decorative fuel-effect gas appliance, BS4543: Parts 2 or 3: 1990;
c. where it serves an oil-fired appliance producing a flue gas temperature not more than 450º C or any other gas-fired appliance, BS4543: Part 3: 1990.
(F3.7) The requirements of F3.7 will be met where the factory-made chimney is installed in accordance with BS7566: Parts 1 to 4: 1992.
The requirements of F3.7b will be met where the casing is located at a distance Xmm (as declared by the chimney manufacturer when testing to the procedures specified in Section 3 of BS4543: Part 1: 1990) from any part of a factory-made chimney; and
a. where the chimney passes through the storage space or cupboard, by an imperforate casing;
b. where the chimney passes through the roof space, by a casing of rigid mesh that will prevent a sphere more than 8mm diameter from passing through.
(F3.8) The requirements of F3.8 will be met where the flue system is installed in accordance with -
a. for masonry and flue block chimneys, BS6461: Part 1: 1984;
b. for factory-made chimneys, BS7566: Part 4 1992;
c. where serving an oil-fired appliance, BS5410 Part 1: 1997;
d. where serving a gas-fired appliance, BS5440 Part 1: 1990.
RELATIONSHIP TO COMBUSTIBLE MATERIAL
(F3.9) The requirements of F3.9 will be met by maintaining a distance Xmm (as declared by the chimney manufacturer when testing to the procedures specified in Section 3 of BS4543: Part 1: 1990) between the outer face of a factory-made chimney and combustible material.
Diagram to (F3.9): Relationship of a factory-made chimney to combustible materials
(F3.11) The requirements of F3.11 will be met, in a building containing an open-flued combustion appliance and a mechanical extract fan(s), by testing to the procedures set out in -
a. for a solid fuel appliance, BRE Information Paper IP 7/94;
b. for an oil-fired appliance, Clause 4.4.7 of BS5410: Part 1: 1997 and OFTEC Technical Information Note TI/112;
c. for a gas-fired appliance, Clause 4.3.2.3 of BS5440: Part 1: 1990.
IDENTIFICATION OF COMBUSTION APPLIANCE INSTALLATIONS
(F3.12) The requirements of F3.12 will be met where the label is provided in accordance with the diagram to this specification -
Diagram to (F3.12): Identification of combustion appliance installation
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IMPORTANT SAFETY INFORMATION This label must not be removed |
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Property address |
20 Main Street New Town |
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The health and chimney liner installed in the |
name of room |
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are suitable for |
dfe gas fire |
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Suitable for condensing mode |
yes/no |
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Chimney liner |
xx mm diameter |
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Installed on |
date |
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Any other information (optional) |
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The label should be fixed in a secure position, such as adjacent to the gas or electricity consumer unit, the water supply stopcock or next to the chimney or hearth described.
SOLID FUEL COMBUSTION APPLIANCE INSTALLATIONS
(F4.2) The requirements of F4.2 will be met where the solid fuel appliance is included in ‘The official guide to approved solid fuel products and services’, published by HETAS Ltd. (Heating Equipment Testing and Approval Scheme).
(F4.3) The requirements of F4.3 will be met where air is provided in accordance with the table to this specification -
Table to (F4.3): Supply of air for combustion
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Type of appliance |
Minimum ventilation opening sizes [Note 2] |
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Open appliance without a throat [Note 1] |
A permanent air entry opening or openings with a total free area of 50% of the cross-sectional area of the flue. |
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Open appliance with a throat [Note 1] |
a permanent air entry opening or openings with a total free area of 50% of the throat opening area. |
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Any other solid fuel appliance |
a permanent air entry opening or openings with a total free area of 550mm2 for each kW of combustion appliance rated output more than 5 kW. (A combustion appliance with an output rating of not more than 5 kW has no minimum requirement, unless stated by the appliance manufacturer) |
Notes:
1. In the table -
THROAT means the contracted part of the chimney flue lying between the fireplace opening and the main chimney flue.
2. Where a draught stabiliser is fitted to a solid fuel appliance, or to a chimney or flue-pipe in the same room as a solid fuel appliance, additional ventilation opening must be provided with a free area of at least 300mm2/kW of solid fuel appliance rated output.
3. Nominal fire size is related to the free opening width at the front of the fireplace opening.
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