Manor 950 - 1250
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Flue Sizing
Each firechest has been tested to establish the optimum flue size required to give best possible performance. The recommended flue sizes are shown in the range table. The minimum flue height required is 4.5m above the fireplace opening.
Regulations and Requirements
Current building regulations require 100mm of solid non-combustible masonry to be built around the sides and back of the firechest. An adequate combustion air supply must be provided in accordance with document J of the building regulations. The inside of the firechest should be lined with firebrick slips. Schiedel Isokern supply buff coloured firebricks. The finished fireplace opening size will be reduced by 70mm when the bricks are installed.
Damper
A flue damper is available with the larger firechests from the 950 upwards. In multi-fuel and wood burning installations the flue damper can be used to control the draft in the flue and avoid excessive heat loss when the fireplace
is not being used. It must not be installed with gas fires. Complementing Isokern firechests are the Schiedel Isokern chimney systems which provide a lightweight, easily installed and versatile chimney which can be used internally or externally. The systems are suitable for use with gas, oil, solid fuel and wood burning appliances in new and refurbished projects.
