Yeoman YM-CL5MF - Manual (Page 17)

17
PRE-INSTALLATION CHECKS
1. FLUE
Model
Yeoman CL3 - YM-CL3MF
Yeoman CL5 - YM-CL5W / YM-CL5MF
Yeoman CL8 - YM-CL8W / YM-CL8MF
Yeoman
CL3
Yeoman
CL5
Yeoman
CL8
Flue / Chimney Size
Without Liner System
Round (diameter)
mm 150 150 150
inch 6 6 6
Without Liner System (square)
Minimum Dimension
mm 135 135 135
inch 5½ 5½ 5½
With Liner or Factory Made
System (diameter)
mm ‡150 150 150
mm ‡6 6 6
Flue / Chimney
minimum height*
m 4 4 4
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
2.1 This appliance requires a constant supply of air to maintain
proper combustion and effective flue performance.
2.2 An inadequate air supply can result in poor combustion and
smoke entering the room which is potentially dangerous.
2.3 This 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.
2.4 The amount of air required must comply with local building
regulations and the rules in force.
2.5 If spillage is detected during commissioning then there may
be insufficient natural ventilation and an additional air supply
will be necessary.
2.6 Many 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 5m 3 per hour per m 2 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.