4.8. PREPARING OF THE FIREBOX (FIG. 48)
A personalised fireplace must:
- be made of M0 (non-combustible) class materials.
- provide for a free cross section of at least 600 cm
2
in its lower part to enable
the free circulation of the air.
4.9. HOOD (FIG. 4.6 REP. 2)
We recommend the use of M0 (non-combustible) class materials as well
as the placing of insulation.
The design of a personalised hood must:
- allow free access to the inside or include a trap door,
- be independent of the fire, which must not be serve to support the hood.
The appliance must be able to dilate freely.
- for appliances with side opening doors, the brick fascia or hood will be
placed at least 1 cm forward of the front of the fire so that the air can
circulate.
- for appliance with lift-up doors, the brick fascia or hood will be placed at
least 3 cm forward of the front of the fire so that the air can circulate.
The hood must include the following elements (fig. 4.6):
4.9.1. False ceiling (rep. 9)
The hood must have a false ceiling fixed at least 30 cm below the ceiling
of the room.
This false ceiling channels the warm air towards the outside, avoids it being
confined to the upper part of the hood and protects the ceiling of the room.
Make the false ceiling using class M0 (non-combustible) materials and then
insulate it. The chamber thus formed must:
- include effective ventilation openings, communicating with the outside of
the hood.
- be airtight as regards the
lower part of the hood in
order to avoid warm air
escaping upwards.
Insulate the side resting
against the wall, the pipe
and the ceiling.
4.9.2. Warm air distri-
bution (rep. 10)
The hood must include, in its
upper part, close to the
ceiling, one or more outlets
for the distribution of warm
air with a total, non-closable
cross section of 600 cm².
4.9.3. Inspection door
The connecting pipes to the
chimney must be visible
along all their length, either
directly, or by an inspection
door or by means of a grille
fitted into the hood. If required
for sweeping, the connecting
pipes must be accessible
(French regulations DTU 24.2).
4.10. PROTECTION OF THE BEAM
No part of the wooden beam (C) must be subject to heat coming in parti-
cular from the smoke collector, the pipe or rising air (window convection).
An installation must be made (cf. fig. 4.11) using an insulating material (A),
rock wool, and our standard protection kit (D) available from your dealer.
(E) brick fascia, (B) hood.
W
W
ARNING
ARNING
In order to allow the fire to dilate, none of its parts must be in contact
with the fireplace.
A clearance of 5 mm must be allowed, in particular between the
jambs of the fireplace and the body of the fire (fig. 6.1).
7cm
A
B
C
D
E
F
G
1
cm
GB 10/12
39417-05-16
4.1
4.1
1
1
A rock wool
B hood
C beam
D protection kit
E non-combustible pediment
F smoke collector compartment
G rock wool
Ø 180
170
175
Ø 180
Ø 150
220
150
550
80
Ø 75
490
1000
1000
170
500
105
105
490
135
Ø 75
300
770
310
830
4.10
