Nibe Contura Ci2, Manual

Page: 8 / 28

GB
15
Recessing the insert
When recessing the insert, adjacent walls that are not classed as fire walls
or are considered unsuitable for exposure to heat must be protected by
non-combustible building material in accordance with the specifications
below.
All joints on the non-combustible material must be sealed using the method
recommended by the manufacturer. The space between the insert and the
recess must be ventilated in accordance with specifications/dimensions
diagrams.
Please refer to the manufacturer’s installation instructions when connecting
a steel chimney to a top outlet. Observe the requirements for the safe
distance from the steel chimney to combustible materials. Because of the
strong heat radiating from the door, combustible materials must be placed a
minimum of 1,4 m from the door.
The insert must be installed with clearance to the building material, not in
direct contact with it, to allow for thermal expansion of the insert.
Material requirements
The building material must not be combustible.
The thermal conductivity coefficient
λ
must be maximum 0.14 W/mK.
The building material must always be at least 100 mm thick.
Where the insulation properties of building material are given as a U-value, it
must be maximum 1.4 W/ m²K.
List of suitable materials:
Aerated concrete:
λ = 0.12–0.14
Vermiculite: λ = 0.12–0.14
Calcium silicate: λ = 0.09
Sealing
The recess must not go all the way up to the ceiling, leave an air gap of at
least 20 mm closest to the ceiling. The recess must be sealed off above the
convection exhaust. The seal must be 100 mm above the convection exhaust’s
upper edge and must be made of 40 mm non-flammable material according
to the material requirements above. Use heat-resistant silicone, for example,
between the seal and chimney.
Convection air
The convection air ventilates the surround, cools the insert and carries hot
air out into the room. The total sum of the effective cross-section area up
and down must not be less than the stated values. The air intake must be
positioned somewhere between floor level and the bottom of the insert, at
the front or on the sides of the recess. The air exhaust must be positioned
above the highest point of the insert at the front or the sides of the recess.
If the air intakes or exhausts are positioned on the sides, the areas for the
left and right side respectively must be the same size to ensure that the
insert is evenly cooled.
Check the minimum distance to the ceiling.
Convection air in: 200 cm²
Convection air out: 200 cm²
Floor and load-bearing base
Combustible flooring beneath the insert must be protected. The examples
show the floor protected by a 40 mm calcium silicate board.
Ensure that the convection box is placed on a base strong enough to bear the
weight of the stove and chimney.
The base must not block the flow of convection air in the space between the
insert and recess.
Steel chimney on the insert
If the insert is to be connected to a module-based steel chimney, it must be
connected via a chimney support panel (accessory). The weight of the steel
chimney on the insert with the chimney support panel must be maximum
100 kg.