Nibe Contura Ci60, Installation Instructions Manual

Page: 15 / 20

!
GB
95
Service
Make sure it is possible to access the damper control and
counterweight through hatches or ventilation grilles in the surround.
RECESSING THE INSERT
Convection air
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 a 50
mm non-combustible material (see material requirements above) and must be placed no more than 100 mm above the upper edge of
the convection exhaust. Use heat-resistant silicone, or a suitable
equivalent, between the seal and chimney.
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 50 mm thick.
Where the insulation properties of building material are given as a
U-value, it must be maximum 1.4 W/ m²K.
Material requirements
The convection air ventilates the surround, cools the insert and
carries hot air out into the room. The effective cross-section area
on the air intake and exhaust 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.
The distance between the exhausts on the sides and a combustible
wall behind should be at least 100 mm.
Observe the minimum distance up to the ceiling (see the diagram
on page 95).
Convection air in: 300 cm²
Convection air out: 300 cm²
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 indicated by the manufacturer. The space between
the insert and the recess must be ventilated in accordance with
specifications/dimensions diagrams on page 97. When connecting a steel flue, please refer to the particular
manufacturer’s installation instructions. Observe the
requirements for safe distances from the steel flue to combustible
materials. Because of the strong heat radiating from the door,
combustible materials must be placed a minimum of 1 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.
Note that the area below and in front of the insert must comply
with building regulations. See section “Hearth plate”.
Recessing the insert
List of suitable materials:
Aerated concrete
λ
= 0.12-0.14
Vermiculite
λ
= 0.12-0.14
Calcium silicate
λ
= 0.09