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round. If the cladding projects forward from the fixing plane of the fire the clearance at
the top of the appliance must be increased to a minimum 15mm. This will allow for
fascia removal.
4.16 The minimum height from the base of the fireplace opening to the underside of
any shelf made from wood or other combustible materials is shown below: -
•
For a shelf up to 150mm deep
Minimum height = 700mm.
•
For a shelf deeper than 150mm
Minimum height = 700mm + 12.5mm for every 25mm depth over 150mm.
(See graph 1).
Graph 1. Combustible shelf clearances
4.17 Proprietary terminals must comply with BS EN 1856 Part 1 . Any terminal or
termination must be positioned in accordance with BS 5440 Part 1 to ensure that the
products of combustion can be safely dispersed into the outside atmosphere. Where the
appliance is connected to an unlined brick chimney it is generally unnecessary for the
chimney pot to be replaced or for a terminal to be fitted unless the flue has a diameter
smaller than 170mm.
4.18 The appliance is fitted with an A.S.D (Atmosphere sensing device). If the
appliance closes down after a period of operation for no apparent reason, the consumer
should be informed to stop using the appliance until the installation and appliance have
been thoroughly checked. The A.S.D will shut the appliance down if an unacceptable
amount of harmful products of combustion accumulate. Under no circumstances should
the A.S.D be altered or bypassed in any way. Only a genuine manufacturers replacement
©
Baxi Heating U.K. Limited 2006.
INSTALLER GUIDE
Page 12
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