Baxi 748 Installer's Manual page 13

INSTALLER GUIDE
3.15 Normal adventitious ventilation is usually sufficient to satisfy the ventilation
requirements of this appliance. In GB reference should be made to BS 5871 Part 2 and
in IE reference should be made to the current edition of IS 813 "Domestic gas
Installations" which makes clear the conditions that must be met to demonstrate that
sufficient ventilation is available
3.16 Propane gas appliances must not be installed in a room, which is built entirely
below ground level (See BS 5871 Pt2).
3.17 If the appliance is to be fitted against a wall with combustible cladding, the
cladding must be removed from the area covered by the fascia. The cladding must also
not touch the fascia (See figure 4). We suggest that the actual fascia is used as a
template to mark the area for combustible cladding removal and that this area is
increased by at least 2mm all round. Ensure that the depth of the cladding will not
prevent the fitting or subsequent removal of the fascia.
3.18 Proprietary terminals must comply with BS 715 or BS 1289. 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.
3.19 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
part should be fitted. The individual A.S.D components are not replaceable.
3.20 A fireguard complying with BS 8423 should be fitted for the protection of young
children, the elderly the infirm and pet animals.
3.21 The minimum allowable distance from the outside of the fascia to a corner wall
having combustible material or any other combustible surface which projects beyond
the front of the appliance is shown in figure 5.
A 10mm access clearance from a non-combustible surface is necessary at the left side
(See figure 5).
Page 13
©
Baxi Heating U.K. Limited 2006.