1.8 FITTING TO PRE-CAST FLUE INSTALLATIONS
When installing this appliance into pre-cast flues, always ensure that the
spigot restrictor baffle has been removed. This is held in place on the spigot
by 2 screws. To install the fire box in to pre-cast flue starter blocks, there
must be at least 125mm from the mounting face of the fire to the rear of the
pre-cast flue starter block
to allow sufficient space for debris collection. If this
dimension is less than 125mm then a fire surround with a deeper rebate to
increase the depth to at least 125mm from the mounting face of the fire. It is
important to consider this depth when choosing a fire surround as the thickness of
the fire surround must be sufficient to give a total depth of
at least 125 mm to the
rear of the starter block
, otherwise there will be insufficient depth. To increase
this depth the fire surround may be packed away from the wall using suitable non-
combustible board, providing the installation is correctly sealed. If in doubt about
the suitability of the fire contact BFM Europe Ltd. for advice before proceeding.
It is important to ensure that the pre-cast flue is in good condition and is free from
extruded mortar or sealant from between the flue blocks.
This appliance has been tested for use in a pre-cast flue block complying
with BS EN 1858. In accordance with BS EN 1858, pre-cast flues built with
directly plastered faces (front or rear) are not correctly installed as to ensure
proper operation with any type of gas fire. In some instances of this flue
construction, temperature cracking of surface plaster may occur through no
fault of the appliance. An air gap or some form of insulation material should
be installed to prevent normal flue temperatures from damaging wall
surfaces.
1.8
HEARTHS
This appliance must only be installed on to a concrete or non-combustible hearth.
The hearth material must be a minimum thickness of 13mm with the top surface at
least 50mm above the floor. The hearth must be fitted symmetrically about the fire
opening and have a minimum width of 770mm and a minimum projection of
300mm forwards from the fire opening.
1.9
SPILLAGE MONITORING SYSTEM
This appliance is fitted with an atmosphere sensing spillage monitoring system in
the form of an oxygen sensing pilot. This is designed to shut the fire off in the
event of a partial or complete blockage of the flue causing a build up of
combustion products in the room in which the fire is operated.
The following are
important warnings relating to this spillage monitoring system
:-
1) The spillage monitoring system must not be adjusted by the installer.
2) The spillage monitoring system must not be put out of operation.
3) When the spillage monitoring system is exchanged only a complete original
manufacturers part may be fitted.
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