Yeoman YM-CL8MF, YM-CL8W, YM-CL5W PRE-INSTALLATION Checks, Ventilation, Flue / Chimney Size

PRE-INSTALLATION CHECKS

1. Flue

Model			CL3	CL5	CL8
Yeoman CL3 - YM-CL3MF
			Yeoman	Yeoman	Yeoman
Yeoman CL5 - YM-CL5W / YM-CL5MF
Yeoman CL8 - YM-CL8W / YM-CL8MF
	Without Liner System	mm	150	150	150
	Round (diameter)	inch	6	6	6
Flue / Chimney Size	Without Liner System (square)	mm	135	135	135
	Minimum Dimension	inch	5½	5½	5½
	With Liner or Factory Made	mm	‡150	150	150
	System (diameter)	mm	‡6	6	6
Flue / Chimney		m	4	4	4
minimum height*		feet	13	13	13

*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:

—The natural leakage of air into the room in which the product is fitted.

—Purpose provided ventilation.

—Some Stovax appliances can also be fitted with an optional outdoor air kit which allows air to be drawn in from the outside.

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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