Hole-In-The-Wall' Installations; Metal Flue Box And Hearth - Valor Homeflame Dream Installation And Owner's Manual

3.10.1.1 'Hole-in-the-wall' Installations.

It is recommended that a hearth should be installed as in section 3.8.
-
Homeflame Dream/Masquerade/Excelsior/Classica firefront
- If a reduced depth hearth is fitted, the fire must be installed so that the distance
from the base of the fireplace opening in the wall to the finished floor level is at least
100mm. It is recommended that the reduced hearth has a depth from the fixing plane
of the fire of 100mm minimum. This is necessary to support the lower front casting.
Where there is no floor covering or carpet and the floor is of a type that is likely to be
covered in such a way in the future then the distance from the base of the fireplace
opening in the wall to the floor level should be increased to at least 175mm.
Homeflame Harmony firefront
-
If a hearth is not fitted, the fire must be installed so that the distance from the
base of the fireplace opening in the wall to the finished floor level is at least 100mm.
Where there is no floor covering or carpet and the floor is of a type that is likely to be
covered in such a way in the future then the distance from the base of the fireplace
opening in the wall to the floor level should be increased to at least 175mm.

3.10.2 Metal flue box and hearth.

The appliance can be installed to a fireplace incorporating a metal flue box complying
with the constructional requirements of the current edition of BS 715 and with a flue
conforming to BS EN 1856 part
1. The dimensions of the flue
box must conform to those
shown in figure 7.
The top, sides and rear surface
of the metal flue box must be
covered with a 50mm layer of
mineral wool or equivalent
insulation (See figure 7).
Important Note: Where the
flue box has a base sheet that
is single wall (i.e. a single
metal sheet) the flue box must
be mounted on a non-
combustible hearth. The hearth
material must be at least 12mm
thick.
© GDC Group Ltd. 2012
INSTALLER GUIDE
Figure 7. Metal flue box dimensions
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