HEALTH AND SAFETY
PRECAUTIONS
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 fire 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 Byelaws and Building
Regulations regarding the installation
of Solid Fuel burning appliances, flues
and chimneys must also be observed.
PERFORMANCE
The rated output for the DX45iB is
10.1 kW (34500 btu/h) to water and
3.1 kW (10600 btu/h) to the room.
The rated output for the DX50iB is
12.0 kW (41000 btu/h) to water and
2.2 kW (7500 btu/h) to the room.
These are the outputs obtained during
testing in accordance with BS 3378
burning the standard test fuel with the
doors closed over a 4 hourly
re-fuelling interval. The heat output to
the room is directly proportional to
the heat output to water as shown in
Fig. 5. 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
appliance 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 (eg.
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
stabilizer should be fitted.
INSTALLATION INSTRUCTIONS FOR THE
CHARNWOOD DX45iB & DX50iB
Fig. 5. Performance Chart
0
2.0
4.0
6.0
8.0
10.0
12.0
1.0
2.0
3.0
Boiler
Output
(kW)
Space Output (kW)
DX50iB
DX45iB
Fig. 7. Limiting Dimensions Of
Surround And Opening
Fig. 6. Limiting Dimensions
Of Hearth
Minimum
400 mm
265 mm
This Dimension Is The
Minimum Level Area
Required To Enable The
Ashpit Door To Be
Opened.
For Overall Sizes Of
Hearth See The
Section Titled "Hearth".
A
B
Dim. A:
Dim. B:
Max. 575mm (22 2/3")
Min. 555mm (21 3/4")
Max. 470mm (18 1/2")
Min. 405mm (16")
The shaded area on the face of
the surround is the minimum flat
area required.
750 mm
660 mm
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DX50iB 3/99
