Hearths; Pre-Cast Flue Installations; Spillage Monitoring System - Flavel Linear Installation, Maintenance & User Instructions

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 760mm and a minimum projection of
300mm forwards from the fire opening.
1.9 FITTING TO PRE-CAST FLUE INSTALLATIONS
When installing this appliance into pre-cast flues, always ensure that the
spigot restrictor baffle has been removed. To install the fire box in to pre-
cast flue starter blocks, there must be at least 170mm from the mounting
face of the fire to the rear of the pre-cast flue starter block to allow sufficient
space for debris collection. 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 170 mm to the rear of the starter block, otherwise there will be
insufficient depth. To increase this depth the optional black 50mm spacer frame
may be purchased (only suitable for, this will reduce the depth required to 120mm
or 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 Flavel Fires for advice before proceeding. This fire has been
designed to fit standard 100mm pre-cast starter blocks with 3 inch rebated
surrounds. 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.
1.10

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. It is not possible to replace
individual parts on the pilot system on this appliance, only a complete
pilot assembly (including the thermocouple) may be fitted.
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