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Osburn Matrix Inbuilt Installation and Operation Manual
If non‐combustible material floor protection needs to be added in front of the hearth extension of
the masonry fireplace, it must be made of cement sheet or similar material with a thermal
conductivity of 0,8 m².K/W per 4 mm thick and have a thickness of 24 mm. The floor protection
should be 1070 mm deep (D) x 945 mm width (W)
The standard configuration of the wood inbuilt leaves no projection of the convection air jacket in
front of the fireplace opening. Therefore the minimum projection is 0''. Although it is possible to
position the wood inbuilt to obtain a projection of 51 mm (2'') or 102 mm (4'') of the convection
air jacket in front of the fireplace opening with the use of the "PROJECTION KIT" option AC01323.
The
choice
of the configuration will depend
on, the
previous
installation instructions
and
compliance with building code. To determine the minimum and maximum projection of the wood
inbuilt, refer to table Data for floor protection calculation.
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