CHARNWOOD DX20i INSTALLATION
INSTRUCTIONS
HEALTH AND SAFETY
PRECAUTIONS
WARNING Please take care when installing the appliance that the requirements of the Health and Safety at Work Act 1974 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 protective equipment.
There must not be an extractor fan fitted 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 into 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
PERFORMANCE
The rated output for the DX20i is 5.4 kW (18800 btu/h) to the room.
This is the output obtained burning
Sunbrite Doubles at a rate of 1.0 kg/hr with the doors closed over a 4 hourly
There is an optional
CHIMNEY
In order for the appliance to perform satisfactorily the chimney height must not be less than 4 metres measured vertically from the outlet of the fire to the top of the chimney. The chimney should preferably be 175 mm (7 inches) or 200mm (8 inches) internal diameter or square with sides of 175mm or 200mm internally and MUST NOT BE
LESS THAN 150mm (6 INCHES) INTERNAL DIAMETER OR 150 x 150mm INTERNAL SQUARE.
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 an 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 is 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 that there is excessive draw in the chimney then a draught stabiliser should be fitted.
HEARTH AND FIRE
SURROUND
The appliance must be installed on a fireproof hearth and must be situated at least 300 mm (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 300 mm (12 inches) and to the sides by at least 150 mm (6 inches). If in doubt as to the positioning of the appliance expert advice 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
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