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Worcester-Bosch Greenstyle Bewdley Manual

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INSTALLATION
LOCATION AND SHIELDING OF CONNECTING
FLUEPIPES
Connecting uepipes should be used only to connect appliances
to their chimneys. They must not pass through any roof space,
partition, internal wall or oor, except to pass directly into a
chimney through either a wall of the chimney or a oor supporting
the chimney. Connecting uepipes should also be guarded if they
could be at risk of damage or if the burn hazard they present to
people is not immediately apparent.
Connecting uepipes should be located so as to avoid igniting
combustible material. Ways of meeting the requirement include
minimizing horizontal and sloping runs and:
• Following the guidance as noted above where the connecting
uepipe is a factory-made metal chimney is at least equal
to designation BS EN 1856-1:2003 and installed to BS EN
15827-1; or
• Separation by shielding in accordance with the diagram below:
AIR REQUIREMENTS AND ASSESSING AIR
PERMEABILTY OF OLDER DWELLINGS IN RELATION
TO PERMANENT VENTILATION REQUIREMENTS
It is important to note for proper operation, this appliance requires
room air to function efciency. Therefore, a calculation of the air
requirements should be performed before and after installation for
proper and efcient operation of this product.
As a guide, this appliance requires 3410mm² of permanently open
vent in a well-sealed house, but this reduces to 660mm² for a
house with much higher air permeability. It is unlikely that a house
built before 2008 will be well-sealed unless extensive measures
have been taken to improve air tightness.
Older houses are unlikely to have been tested but are unlikely to
achieve an air permeability of less than 5.0 m3/(h.m2) at 50Pa
unless the building fabric has been substantially upgraded.
Elevation
without shield
Elevation
with shield
Plan without
shield
Shields should either:
a) extend beyond the fluepipe by at least 1.5 x D; or
b) make any path betweeb fluepipes and combustible
material at least 3 x D long.
Air space of at least 12mm
between non-combustible
shield and combustible
material
Plan with
shield
Indicates combustible
material
Protecting combustible material from uninsulated uepipes for solid fuel appliances
1 2 3 4 5 6 7 8
9 10 11 12 13 14 15 16
Always follow the manufacturer’s instructions when installing the factory built chimney system and related components. Document
J can also be a good reference for installation. All local codes must be followed during installation.
216720818040 C 11/2017
… 21 …


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