materials to be used are stainless steel or aluminium as specified in BS EN 1856 Part
1 or BS715. The liner must be sealed to the surrounding area above the fireplace
opening and to the top of the chimney. An approved terminal must be fitted.
!
A properly constructed precast concrete or clay flue system conforming to BS1289 or
BS EN 1806. This system is only suitable if the conditions stated in section 4.2.3 are
met.
4.4
The flue must conform to BS 5440: Part 1 in design and installation.
The flue, measured from the bottom of the fireplace opening to the bottom of the
terminal, shall be not less than 3m in actual vertical height. When calculated in
accordance with BS 5440: Part 1 Annex A, the minimum
equivalent
height of the flue
shall be 2.0m of 125mm-dia. flue pipe.
4.5
The flue must not be used for any other appliance or application.
4.6
Any chimney damper or restrictor should be removed. If removal is not possible,
they must be secured in the open position.
4.7
If the appliance is intended to be installed to a chimney that was previously used
for solid fuel, the flue must be swept clean prior to installation. All flues should be
inspected for soundness and freedom from blockages.
4.8
If the fireplace opening is an underfloor draught type, it must be sealed to stop
any draughts.
4.9
The appliance must be mounted behind a non-combustible hearth unless the
conditions of section 4.2.1.1 are met (N.B. conglomerate marble hearths are considered
as non-combustible). The appliance can be fitted to a purpose made proprietary class
“O”-150°C surround. The hearth material must be at least 12mm thick. The periphery of
the hearth (or fender) should be at least 50mm above floor level to discourage the
placing of carpets or rugs over it.
The surface of the hearth must be sufficiently flat to enable the bottom of the fascia and
the bottom front cover to be aligned horizontally. Any excessive unevenness (uneven
tiles, Cotswold stone, etc.) should be rectified.
The appliance must not stand on combustible materials or carpets
.
4.10
The front face of the fireplace should be reasonably flat over the area covered by
the hotbox top and side flange seals to ensure good sealing. These faces should be made
good if necessary.
The fireplace floor should be reasonably flat to ensure that a good seal with the hotbox
can be made.
Page 11
INSTALLER GUIDE
©
Baxi Heating U.K. Limited 2007.
