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.
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.
Special chimney and flue connection requirements apply to
appliances installed for the Northern Ireland Housing
Executive. Please refer to Technical Information Sheet no.45
which is available from Charnwood on request.
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:15287-1:2007 can be used either internally or externally.
These chimneys must be fitted in accordance with the
manufacturers instructions and Building Regulations.
Anki pumice liners or chimney blocks will give a highly
insulated chimney which will work well with all fuels. For
details ring (01983) 527997.
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.
CHIMNEY
®
INSTALLATION INSTRUCTIONS
charnwood
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)
LA50iB
LA45iB
LA45iB with
boiler reduction
brick fitted.
A
B
405 mm
400 mm
Minimum
This Dimension Is The
Minimum Level Area
Required To Enable The
For Overall Sizes Of
Hearth See The
Section Titled "Hearth
& Fire Surround".
Doors To Be Opened.
Dim. A:
Dim. B:
Min. 405mm (16")
660 mm
The shaded area on the face of
the surround is the minimum flat
area required.
750 mm
Min. 555mm (21 - 3/4")
Max. 575mm (22 - 2/3")
Max. 470mm (18 - 1/2")
Fig. 6. Limiting Dimensions Of Hearth
Fig. 7. Limiting Dimensions Of Surround And Opening
11
Summary of Contents for LA 45
Page 1: ...Operating Installation Instructions charnwood ...
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