Convection Space; Lateral And Rear Thermal Insulation Layers; Protecting The Installation Floor; Expansion Joints - Austroflamm 65x Montagehandbuch

EN

6.2 Convection space

• If the convection jacket (accessory) is not used, a convection space of at least 6 cm deep must
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be provided between the fireplace insert and the insulation layer
•
The convection space (5) must be thermally insulated against all surfaces that do not have heat-
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emitting cladding.
•
The heating chamber walls, floor and ceiling must be clean and abrasion-resistant (see Tech-
nical Rules of the Furnace and Air Heating Construction Trade). For this reason, the insulation
layer must be protected with an abrasion-resistant material (radiant sheet metal/heating cham-
ber sheet metal or similar), unless calcium silicate boards are used.
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Convection air duct with convection jacket
All convection air conduits must be made of dimensionally stable, non-flammable building materials.
The warm air pipes must be fixed firmly to the warm air (supply air) outlets of the convection jacket and to the grids
(preferably with a connecting plate).
Fireplace without air grid (hypocausts)
The convection air circulates within the sealed cladding. The heat is released through the cladding by means of
radiation.
6.3

Lateral and rear thermal insulation layers

•
The building wall (1) to be protected must be done so with a 9 cm thick insulation layer (4,16).
•
The cladding (11) must also be protected with an insulation layer. The cladding does not need to be protected if the
open fireplace is such that the free surfaces of the cladding and the surfaces of the niches for fuel storage can heat
up to a maximum of 85 °C. For surfaces made of mineral building materials, e.g. stove tiles, with the exception of
surfaces on which objects can be placed, the value of 85 °C is replaced by 120 °C. This increase in the maximum
permissible temperature from 85 °C to 120 °C only applies to the more inclined or vertical surfaces of cladding
made of mineral building materials. This allows the cladding to be designed as a heated tiled wall or similar.
6.4

Protecting the installation floor

•
Installation floors (8) containing flammable building materials must be protected as follows:
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By a concrete slab (7) at least 6 cm thick (dimension E), which must be reinforced above instal-
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lation floors without sufficient lateral distribution, and above this a thermal insulation layer (9) at
8 least 5 cm thick (dimension D). For models 71X51/57 S3, this must be at least 2 cm thick (di-
mension D)).
•
Supporting concrete or reinforced-concrete floors (8) must be protected as follows:
A thermal insulation layer (9) at least 5 cm thick. For models 71X51/57 S3, this must be at least
2 cm thick.
6.5

Expansion joints

The fireplace insert must not be in direct contact with the cladding (11). To this end, all points of contact between the
appliance and the cladding must be separated by means of sealing tape (glass-fibre tape). Similarly, the supporting
frame (23) must not rest on the unit or be screwed or welded to it.
6.6

Cladding

The room-side cladding (11) must be made of non-combustible materials of construction material class A1. These are
e.g. bricks, masonry blocks, ceramic stove tiles, metal and plaster on plaster substrates.
6.7

Fireplace apron

The fireplace apron (11) must not come into direct contact with the fireplace insert. It must be self-supporting. The
manufacturer offers different supporting frames (23) for this purpose.
FIREPLACE INSERTS / SLIDING DOOR
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at the rear and both sides.
(4,16)
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