Health and safety precautions performance, Chimney, Hearth and fire surround central heating system – Charnwood Country 15B User Manual
Page 6
HEALTH AND SAFETY
PRECAUTIONS
PERFORMANCE
Please take care when installing the
stove 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 stove 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.
Do not light the fire before the boiler
has been connected to the system and
filled with water, as this can cause
serious damage to the boiler.
In addition to these instructions the
requirements of BS.8303 and BS.6461
Pt 1&2; 1984 must be fulfilled. Local
Authority Bylaws and Building
Regulations regarding the installation
of Solid Fuel burning appliances, flues
and chimneys must also be observed.
The output of the Country 15B is 13.0
kW (44,400 Btu/h) to water and 2.5
kW (8,500 Btu/h) to the room. The
outputs were obtained burning
smokeless fuel over a four hourly re-
fuelling cycle with the doors closed.
The heat output to the room is directly
proportional to the heat output to
water as shown in Fig. 4. This means
that if the water heating load is less
than the rated output then the room
heating will be reduced by the same
proportion. This must be borne in
mind when calculating the heating
requirements.
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 stove
to the top of the chimney. The internal
dimensions of the chimney should
preferably be 175 mm (7 inches) or
200mm (8 inches) either square or
round and MUST NOT BE LESS
THAN 150 mm (6 INCHES).
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 stove 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
stabilizer should be fitted.
It is important that there is sufficient
draw in the chimney and that the
chimney does not suffer from down-
draught. When the chimney is warm
the draw should be not less than 2.54
mm (0.10 inches) water gauge. If in
doubt about the chimney seek expert
advice.
The stove must stand on a fireproof
hearth and must be situated at least
300mm (12 inches) from any
combustible material. The positioning
of the stove 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 stove by at least
300mm (12 inches) and to the sides of
the stove by at least 150mm (6
inches). If in doubt as to the
positioning of the stove 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
to ensure that maximum heat is
transferred to the room and also to
prevent the fireplace from
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 or beam is used
in the fireplace it should be a
minimum of 460mm (18 inches), and
preferably 600mm (24 inches) from
the appliance. In some situations it
may be necessary to shield the beam
or mantelpiece to protect it.
The central heating system must
comply with BS:5449 part 1.
If the system is to be a combined
heating and domestic hot water system
then a double feed indirect hot water
storage cylinder to BS:1556 part 1
should be used. In order to prevent the
build up of scale and corrosion a
HEARTH AND FIRE
SURROUND
CENTRAL HEATING
SYSTEM
INSTALLATION INSTRUCTIONS FOR THE
CHARNWOOD COUNTRY 15B
2.0
4.0
6.0
8.0
10.0
12.0
14.0
0
1.0
2.0
3.0
0
Boiler
Output
Space Output
(kW)
(kW)
Fig. 4. Performance Chart
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Country 15B 09/03