Shelves
If in doubt always consult the building regulations regarding the proximity of combustible materials.
The minimum height from the top surface of the frame of the re to the underside of any shelf shall be as
follows.
For a shelf depth of 100mm (4”) from wall – Minimum height = 375mm (15”)
For shelves of a greater depth add 50mm (2”) to the shelf height for every 25mm (1”) increase in shelf depth.
In certain cases further protection may be required to guard against heat on combustible materials, such as
increasing the shelf height or shielding with a non combustible material.
This is because of the variability of the heat produced from a solid fuel re.
It is dependent on the quantity of fuel used and the refuelling frequency.
Plastering
Hot air can cause staining above the re in the same manner as on the wall above a radiator.
This often shows more on lighter coloured nished surfaces.
The area directly above the re will become very hot. Therefore to reduce the risk of cracking we advise the
following:
When plastering above the re, t reinforcing mesh (expanded metal lathing) for at least 225mm above the re
and for the full width of the re. This mesh can be continued down the sides of the re.
Use a high temperature or other heat resistant plaster.
Air Supply
All res require a supply of air to support combustion and to allow the chimney to draw correctly.
Air starvation will result in poor ue draw and smokiness in the room.
All installations will require a permanent dedicated air supply for the re of at least 5.5cm2 per kW of rated heat
output over 5kW. The size of air supply duct or ducts recommended for each re is shown in the installation
data table page 5.
The Building Regulations Document J and L must be taken into account when providing ventilation for
the re.
Newly constructed houses, especially those using double-glazing and employing modern draught control
techniques, will need careful planning of air entry.
Extractors or fans when operated in the same room or adjoining room of the re may cause problems.
If there is a fan or extractor tted in the property then allowance for additional air may be required. See
commissioning section.
If there is more than one appliance in the property then each appliance must be supplied with adequate
combustion air and ventilation so that all the appliances can operate simultaneously.
Air Supplied from Room
Bring air in to the room close to the re. The ideal position is just to the sides of the replace opening as shown.
It can be split and brought up in two positions if required, one each side of the replace opening.
Careful positioning of the vents is essential so that they are not liable to become blocked and cause cold
draughts.
Where possible, draw air from two walls at right angles and duct to a mixing chamber beneath the oor before
it enters the room. This will reduce the inuence of strong winds on the supply of air. Where an existing oor
is solid, vents may have to be provided through the walls in a manner, which achieves conditions as close as
possible to the above, perhaps, by the use of ducting or of false skirting.
Where there is a suspended oor over a well ventilated under oor space, it may be sufcient just to set ventilation
openings through the oorboards adjacent to the chimney breast. Older houses with the possibility of draughts
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