Charnwood SLX20 - Manual (Page 8)

INSTALLATION INSTRUCTIONS FOR THE
CHARNWOOD SLX20
HEALTH AND SAFETY
PRECAUTIONS
PERFORMANCE
CHIMNEY
HEARTH AND FIRE
SURROUND
PREPARATION OF THE FIREPLACE
WARNING please take care when installing the appliance
that the requirements of the Health and Safety at Work Act
are met.
Some types of fire cement are caustic and should not be
allowed to come into contact with the skin. In case of
contact wash with plenty of water.
If there is a possibility of disturbing any asbestos in the
course of installation then please use appropriate
equipment.
There must not be an extractor fan in the same room as the
appliance as this can cause the appliance to emit fumes into
the room.
There must be an adequate air supply to the room in which
the appliance is installed totalling at least 100 square cm. (16
square inches) to provide combustion air. This is particularly
necessary if the room is double glazed.
In addition to these instructions the requirements of
BS:8303 and BS:6461 Pt 1&2; 1984 must be fulfilled. Local
Authority Bye-laws and Building Regulations regarding the
installation of Solid Fuel burning appliances, flues and
chimney must be observed.
The rated output for the SLX20 is 5.4 kW (18500btu/h) to
the room.
This is the output obtained burning smokeless fuel with the
doors closed over a 4 hourly re-fueling interval.
There is an optional add-in domestic hot water boiler
available with an output of 2.0 kW (6800 btu/h). If this is
fitted then the output to the room will be reduced by a
corresponding amount.
In order for the appliance to perform satisfactorily the
chimney height must not be less than 4 metres measured
from the outlet of the fire to the top of the chimney. The
chimney should preferably be 175mm (7 inches) or 200mm
(8 inches) internal diameter or square with sides of 175mm
or 200mm internally and
If an existing chimney is to be used it must be swept and
checked, it must be in good condition, free from cracks and
blockages, and should not have a excessive cross sectional
area (e.g. Greater than 250mm x 250mm). If you find that
the chimney is in poor condition then expert advice should
be sought regarding the necessity of having the chimney
lined. If it found necessary to line the chimney then a lining
suitable for Solid Fuel must be used.
If there is no existing chimney then a prefabricated block
chimney or a twin walled insulated stainless steel flue to
BS:4543 can be used either internally or externally. These
chimneys must be fitted in accordance with the
manufacturers instructions and Building Regulations.
Single wall flue pipe is suitable for connecting the appliance
to the chimney but is not suitable for using for the complete
chimney.
If it is found there is excessive draw in the chimney then a
draught stabiliser should be fitted.
The appliance must be installed on a fireproof hearth and
must be situated at least 300mm (12 inches) from any
combustible material. The positioning of the appliance and
the size of the hearth are governed by building regulations
for Class 1 appliances. These building regulations state that
the hearth must extend in front of the appliance by at least
300mm (12 inches) and to the sides by at least 150mm (6
inches). If in doubt as to the positioning of the appliance
expert advise should be sought either from the supplier or
the local building inspector.
The fireplace must allow good circulation of air around the
appliance, especially above it, to ensure that maximum heat
is transferred to the room and also to prevent the fireplace
overheating. A gap of 150mm (6 inches) each side and
300mm (12 inches) above the appliance should give
sufficient air circulation. If a wooden mantelpiece, beam or
surround is used in the fireplace it should be a minimum of
460mm (18 inches), and preferably 600mm (24 inches)
above the appliance. In some situations it may be necessary
to shield the beam or mantelpiece to protect it.
Before fitting the appliance into an existing fireplace remove
the fire back and any loose in-fill material.
The surround and opening for the appliance must conform
with Figs. 3. The flat area around the opening must be a
minimum of 750mm wide and 660mm high. Ensure that the
hearth and the base in the opening are flat, level, and at
MUST NOT BE LESS THAN
150mm (6 INCHES) INTERNAL DIAMETER OR 150 x
150MM INTERNAL SQUARE.
Page 8
SLX20 9.03