PRE-INSTALLATION CHECKS
1. Flue
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| CL3 | CL5 | CL8 | |
Yeoman CL3 - |
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| Yeoman | Yeoman | Yeoman | ||
Yeoman CL5 - |
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Yeoman CL8 - |
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| Without Liner System | mm | 150 | 150 | 150 | |
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| Round (diameter) | inch | 6 | 6 | 6 | |
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Flue / Chimney Size | Without Liner System (square) | mm | 135 | 135 | 135 | |
Minimum Dimension | inch | 5½ | 5½ | 5½ | ||
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| With Liner or Factory Made | mm | ‡150 | 150 | 150 | |
| System (diameter) | mm | ‡6 | 6 | 6 | |
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Flue / Chimney |
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minimum height* |
| feet | 13 | 13 | 13 | |
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*When measured from the top of the flue, with no horizontal sections and a maximum of 4 bends with angles of less than 45°
‡May be 125mm (5") if burning low volatiles (smokeless) fuels approved for use in Smoke Control Areas.
See web site http://uksmokecontrolareas.co.uk for more information about approved fuels.
2. VENTILATION
2.1This appliance requires a constant supply of air to maintain proper combustion and effective flue performance.
2.2An inadequate air supply can result in poor combustion and smoke entering the room which is potentially dangerous.
2.3This supply of air can come from either:
2.4The amount of air required must comply with local building regulations and the rules in force.
2.5If spillage is detected during commissioning then there may be insufficient natural ventilation and an additional air supply will be necessary.
2.6Many older buildings are sufficiently ventilated by natural leakage of air to provide suitable air supply for an appliance of 5kW output or less.
Modern building techniques have reduced the amount of air that leaks in or out of a house. A modern construction with an air tightness of less than 5m3 per hour per m2 requires an air vent for ALL solid fuel appliances including those with a rated heat output of less than 5kW.
NOTE: The air leakage of a modern house is tested at the completion of construction and a certificate issued confirming this.
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