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www.contura.eu
C i6
• Installation instruction
• Lighting instructions
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GB
98
CERTIFICATE
DECLARATION OF PERFORMANCE
No. Ci6-CPR-130904-SE-1
PRODUCT
Product type Insert lit with solid biofuels
Type designation Contura i6
Manufacturing number See rating plate on the insert
Intended area of use Heating of rooms in residential buildings
Fuel Wood
MANUFACTURER
Name NIBE AB / Contura
Address Box 134, Skulptörvägen 10
SE-285 23 Markaryd, Sweden
CHECKS
According to AVCP System 3
European standard EN 13229:2001 / A2:2004
Test institute Rein-Ruhr Feuerstätten Prüfstelle, NB 1625,
has checked declared performance and issued test report no. RRF-29 12 3029
The undersigned is responsible for the manufacture and conformity with the declared performance.
Niklas Gunnarsson,
Business area manager NIBE STOVES
Markaryd, 1st July 2013
DECLARED PERFORMANCE
Essential characteristics Performance Harmonised technical
specification
Reaction to fire A1 WT
Minimum distance to combustible material According to the given conditions in the
installation instructions.
Risk of falling embers Approved
Emissions from combustion CO 0.10%
NOx 121 mg/m
3
OGC 109 mg/m
3
PM 19 mg/m
3
Surface temperatures Approved
Cleaning options Approved
Mechanical durability Approved
Emissions of hazardous substances Approved
Nominal output 5 kW
Efficiency 78%
Flue gas temperature in connector at nominal
output
270°C
EN 13229:2001 / A2:2004
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GB
99
List of Contents
Installation instruction
Technical details / Dimensions 100
Supply of combustion air 101
Recessing the insert 102
Recess example 103
Installation in existing open hearth 104
Removing the internal parts 105
Assembly 107
Lighting instructions
Lighting in the right way 110
Maintenance 111
Possible causes for interruption in operation 112
CONTENTS
NOTE:
Report the installation of an insert to
your local building authority.
The owner of the house is personally responsible
for ensuring compliance with the mandatory safety
requirements and must have the installation approved by
a qualified inspector. Your local chimney sweep must also
be informed about the installation as this will affect the
routines for regular chimney-sweeping services.
WARNING!
The insert becomes very hot
During operation, certain surfaces of the insert become
very hot and can cause burn injury if touched. Also,
take heed of the strong heat radiated through the door
glass. Placing flammable material closer than the safe
distance indicated may cause a fire. Smoulder combustion
can cause quick gas ignition with the risk of damage to
property and personal injury.
A warm welcome to Contura.
A warm welcome to the Contura family. We hope
you will get a great deal of pleasure from your new
insert. As a new owner of a Contura insert, you have
secured a product with timeless design and long
service life. Contura also has a combustion process
that is both environmentally friendly and efficient, for
the best heat production.
Read through these installation instructions carefully
before installation. Read how to best light your stove
in the section with lighting instructions.
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465
505
405
320
180
330
Ø125
Air inlet Ø65
400
380
Ø125
590
660
330
595
295
170
Air inlet Ø65
C i6
545
625
GB
100
Type approved in accordance with:
European standard EN-13229 (DE/A),
DINplus,
Part 15a B-VG in accordance with test
report
RRF- 29 12 3029
Norwegian standard, SINTEF 110-0391
Type approved in SE in accordance with
SITAC xxx
Flue connection - Rear Flue connection - Top
Output 3-7 kW
Nominal output 5 kW
Efficiency 78 %
Weight (kg) 80
Width (mm) 595
Depth (mm) 405
Height (mm) 505
FACT S
Dimensions
Technical details
Cast iron front
Connection dimensions
Glass front
Important to remember!
Installation by authorised
technician
This manual contains instructions about
how the insert must be assembled and
installed. To ensure the function and safety
of the insert, we recommend that the
installation is carried out by an authorised
technician. Contact one of our dealers who
can recommend suitable fitters.
Building permission
Before installing a stove or erecting a
chimney, it is necessary for you to make an
application for building permission to your
local authority. Ask your local authority for
advice regarding building regulations and
the application.
Structural support
Check that the wood joists are strong
enough to bear the weight of the stove and
chimney. The stove and chimney can usually
be placed on a normal wooden joist in a
single occupancy house, if the total weight
does not exceed 400 kg.
Hearth plate
Due to the risk of falling embers, a
flammable floor must be protected by
a hearth plate. The hearth plate must
extend 300mm in front of the hearth and
can consist of natural stone, concrete,
metal or glass.
The minimum distance in front of the
hearth to combustible parts of the building
or interior decoration must be at least 1
metre.
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GB
101
INSTALLATION
For optimum function and heat exchange a supply air connection
(accessory) is recommended via a separate duct. The air can be
supplied indirectly via a vent in the outer wall, or directly through a
duct from outside.
The connector on the supply air connector has an outer diameter
of Ø65 mm. When duct routing further than 1 m the pipe diameter
must be increased to 100 mm and a correspondingly larger wall
vent must be selected. The amount of air needed for combustion is
approx. 20 m3/h.
Supply of combustion air
• The insert meets the requirements for connecting to chimneys
dimensioned for 350°C flue gas temperatures.
• The connection sleeve’s outer diameter is 125 mm.
• The insert requires a draft in the chimney of at least –12
Pa. The draft is affected both by the length and area of
the chimney, and by how well sealed it is. The minimum
recommended chimney length is 3.5 m and suitable crosssectional area is 120-175 cm² (125-150 mm in diameter).
• A flue with sharp bends and horizontal routing reduces the
draught in the chimney. The maximum horizontal flue is 1 m,
on the condition that the vertical flue length is at least 5 m.
• It must be possible to sweep the full length of the flue and the
soot doors must be easily accessible.
• Carefully check that the chimney is sealed and that there is no
leakage around soot doors and flue connections.
Requirements for the chimney
Connection kit back
Used when there is sufficient space to the rear.
Connector downward
Used when there is insufficient space to the rear.
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GB
102
RECESSING THE INSERT
If the recess is to extend to the ceiling, a heat shield must be positioned above the convection exhaust. This is to prevent hot air collecting
in the recess closest to the ceiling. The seal must a maximum of 100 mm above the convection exhaust’s upper edge and must be made up
of 20 mm thick building boards made of calcium silicate or a panel with at least a 50 mm thickness of rock wool on top.
Convection air
The convection air ventilates the surround, cools the insert and transports the 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 vent must be positioned above the insert’s highest point at the
front or to the sides of the recess.
If the air intake respectively the vent is positioned on the sides, the areas for the left respectively right sides 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
Load bearing base
Check that the convection box is positioned on a base strong enough to bear the weight of the stove and chimney. The weight of the
chimney must not load the insert with more than 100 kg. The base must not prevent the convection air flow in the area between insert and
recess.
Recessing the insert
When recessing the insert, adjacent walls that are not classed as fire walls or are considered unsuitable for heat loads must be protected by
non-combustible material according to the specification below.
All joints on the non-combustible material must be sealed using the method recommended by the manufacturer. The area between the
insert and the recess must be ventilated according to the specification/dimension diagrams.
When top connecting a steel flue, please refer to the particular manufacturer's installation instructions. Observe the safety distance to
combustible material required by the steel flue Heat radiation from the door is strong and because of this combustible material must not be
placed closer than 1 m in front of the door. When recessing, the building material must not be in direct contact with the insert due to the
thermal expansion of the insert.
Material requirements
The building material must not be combustible.
The thermal conductivity coefficient λ must be a maximum of 0.14 W/mK.
The thickness of the building material must always be at least 100 mm.
In cases where the building material’s insulation properties are given as a U-Value, this must be a maximum of 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
Heat shield
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GB
103
20*
800
100
50
100
300
20*
100
50
100
20*
50
100
300
500
20
max 100
20*
100
100
800
300
20
8
Area out min. 200 cm
2
Area in min. 200 cm
2
Heat shield
Load bearing base
8
100
8
20
100
500
20
100
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C i6
Load bearing base
The dimensions are the minimum
dimensions, unless otherwise
stated.
Wall of non-combustible material that is
not in contact with combustible material
and therefore has no minimum thickness
requirement.
Wall of non-combustible material, made
of 100 mm aerated concrete in the recess
example.
Wall of combustible material
Recess example
RECESS EXAMPLE
* Note: 35 mm applies when installing semi-insulated Premodul chimney.
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610
413
513
Min 300
GB
104
INSTALLATION
The insert is designed to be installed as a stove cassette
in existing approved open hearths. There must be an 8 mm
air gap around the insert, to allow for the expansion of the
insert when hot.
Installation in existing open
hearth
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21
3
GB
105
Hearth bottom
Hearth cladding
Fire bars
Remove internal loose cast iron components and fire bricks as
follows.
INSTALLATION
Removing the internal parts
Handle the hearth cladding with
care.
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4
5
1
2
3
GB
106
INSTALLATION
Then remove the insert from the
convection box
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1a 1b
3
2
4
GB
107
INSTALLATION
Connection to existing masonry chimney
A flexible hose is recommended for ease of installation
(sold as an accessory). Secure the sleeve in the hose. Connect and
seal carefully between the hose and the chimney according to the
separate instruction.
The insert can also be connected with fixed pipe inserted up the
chimney
Seal carefully between the hose
and the chimney using mineral
wool.
Page 12
x6
LEK
Ø 6 mm
1
2
3
GB
108
INSTALLATION
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1 2
3
4
GB
109
It is extremely important that the installation is inspected by an authorised inspection body
before the insert is used. Also read the "Lighting instructions" before lighting for the first time.
Final inspection of the installation
Reinstall the internal
components in reverse order.
INSTALLATION
Page 14
Max. öppenStängd
Förbränningsluftsspjäll
GB
110
Lighting instructions
Correctly sized wood
Note that if too little kindling is used when lighting, or if the wood is too
thickly cut, the fire box will not reach the correct operating temperature.
Incorrect lighting can lead to poor combustion with heavy sooting and may
result in the fire going out when the door is shut.
Lighting logs: Finely chopped wood
Length: 25-33 cm
Diameter: 3-4 cm
Weight per lighting: 1.5 kg (approx. 12-15 finely chopped pieces)
Lighting
If the house has mechanical ventilation, open a window near to the fireplace prior to lighting. Leave the window open for a few minutes until the
fire has caught properly.
1. Open the combustion air damper completely.
2. Insert paper or firelighters and about 1.5 kg of thinly chopped kindling
into the firebox. Stack the wood crosswise.
3. Light the fire.
4. Set the door to the lighting position, that is the door is positioned to
create a gap of
approx 10 mm between the door and the body.
5. When the fire has caught fully after approx 10-15 minutes, close the
door completely.
6. A fresh load of logs should not be put on until the start-up fire has
become a glowing bed of embers.
Adding wood
1. Open the door a few centimetres and allow the vacuum in the firebox to
equalise for a few seconds before opening the door fully.
2. Add one or two logs with a combined weight of approx 1.5 kg. Place one
log diagonally and one parallel to the back plate. Then close the door.
The combustion damper must be completely open for 5 minutes until
the logs turn black and are burning thoroughly.
3. If slower combustion is then required, the supply of combustion air can
be reduced. The nominal output of 5 kW is obtained when the combustion air damper is 50 % open and two logs are lit. In this operating
position it is important that the air intake damper is fully open for the
first 5 minutes so that the wood has time to burn properly before the
supply of combustion air is reduced. A condition for regulating the
output is a thick bed of embers and high temperature in the firebox.
When the fire has died down to embers more wood should be added.
The conditions for controlling combustion vary depending on the temperature in the combustion chamber and the draft in the chimney.
LIGHTING INSTRUCTIONS
Contura i6 is intended to produce secondary heating for the accommodation. It is important that the correct amount of wood is used, especially
when lighting. If you are lighting the fire for the first time you should use
a set of scales to see how much 1.5 kg kindling is. Also check what the
normal and maximum weights look like.
The insert may only be lit with the door closed. Always open the door carefully and slowly to prevent blow back because of the changing pressure in
the stove.
The function of the insert differs depending on the draft conditions in the
chimney. Achieving the correct setting for the combustion air damper usually takes a few attempts.
Lighting in the right way
Feeding Wood: Split logs
Length: 25-33 cm
Diameter: 7-10 cm
Normal weight: 1.5 kg/hour (1-2 pieces per insertion)
Max amount: 2,3 kg/hour (2-3 pieces per insertion)
It is important that the wood catches fire quickly.
Quick lighting is achieved by opening the combustion air damper fully or by leaving the door ajar for
a moment. Pyre lighting gives poor combustion and
produces a lot of smoke and can cause quick gas
ignition in the worst instance resulting in hearth
damage.
Important!
Max. openClosed
Combustion air damper
Page 15
GB
111
Choosing fuel
All types of wood, such as birch, beech, oak, elm, ash, conifers and fruit
trees can be used as fuel in the insert. Different types of trees have different densities, the greater the density of the wood the greater the energy
value. Oak, beech and birch have
the highest density.
The wood’s moisture content
Fresh wood is about 50 per cent water. Some of the water circulates freely
between the fibres and some of the water is bound in the cells. The wood
must always be dried so that the free water evaporates. The timber is
ready for use when the moisture content has fallen below 20 %. If wood
with a higher moisture content is lit, a large part of the energy content of
the wood is used boiling off the water. If the wood is damp, the combustion is also poor, layers of soot and tar build up in the chimney and could,
at worst, lead to a chimney fire. In addition, it causes the glass of the stove
to soot and may cause discomfort to those living nearby.
To ensure thoroughly dry wood, the wood should be cut in the winter and
stored, well aired, under a roof. Never cover the woodpile with a tarpaulin to the ground. The tarpaulin will then act as a sealed cover and the
wood will be prevented from drying. Always store a small amount of wood
indoors for several days before use, so that the surface moisture has time
to evaporate.
Do NOT burn the following
Under no circumstances may pressure impregnated wood, painted or glued
wood, chipboard, plastic or colour brochures be used as fuel. All these
materials can create hydrochloric acid and heavy metals that are damaging
both to the environment and the hearth. Hydrochloric acid can also attack
the steel in the chimney or the mortar in a stone built chimney.
The glass may be come sooty with use, even if lit with dry wood with a
moisture content of 15-20%. Regular cleaning with dry paper is usually sufficient to keep it clean. If the soot has been on the glass for a
prolonged period use a cleaning agent or a special soot removal agent to
remove it. Such agents can be purchased from regular hardware stores or
from your local stove dealer.
Never use cleaning agents that contain any abrasives, these can damage
the glass.
When emptying the ash, ensure that there are no glowing embers. The
ash must be stored in a fireproof container with a lid for at least one week
before being disposed of.
Cast iron parts are cleaned using a steel brush.
It is important from a combustion point of view to check gaskets, as worn
gaskets hinder combustion when the stove draws "extra air".
Painted parts of the insert can be cleaned using a damp cloth, with a small
amount of detergent, if necessary. Damage to painted parts, e.g. small
scratches, can be rectified with Contura touch-up paint. Contact the dealer.
Parts located near the actual seat of the fire may require replacing. Examples of such parts are the hearth surround. The service life of these parts
depends on how much and how the insert is used.
Not too big fires
Fires should not be too big. Large fires are uneconomical and they give off
high flue gas temperatures that can damage the cassette and the environment. Recommended amount of wood for normal use is 1.5 kg/hour, with
the maximum permitted amount of 3 kg/hour when lighting with chopped
birch wood or other broad leaf wood with a moisture content of about 18
%. When lighting with the same wood amounts as above but with, for example, conifer wood, higher fireplace temperatures are achieved. The service
life of the insert can be cut short if the fire is left at full combustion for
long periods and, if the maximum permitted amount of wood is exceeded,
parts in the insert can become damaged thus voiding the warranty.
Managing waste
The insert packaging consists of cardboard, wood and a small amount of
plastic. The materials must be sorted and recycled.
LIGHTING INSTRUCTIONS
Maintenance
Hearth plate glass must
be discarded as waste
material together with
pottery and porcelain
When the insert is new
When new, the insert may emit an odour due to excess paint and oil coating that may remain on the panels. The odour will disappear completely
after several fires.
Page 16
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GB
112
Possible causes of malfunctions and how to
rectify them
Poor draft in the insert after new installation
• Check that the chimney length meets Contura’s recommendation, which
is at least 3.5 m.
• Check that there is nothing in the chimney to restrict the smoke and
that no nearby buildings or trees affect the winds around the chimney.
• Check the chimney area (applies to existing chimneys). The area must
be 120–175 cm².
It is diffi cult to light the fi re and the fi re dies
after a short time
• The wood may not be dry enough, check the wood.
• Another reason is that there may be negative pressure in the house,
for example when using a kitchen extractor fan or other mechanical
ventilation. Open a window near the insert before lighting the fire. Also
try lighting some newspaper and holding it up inside the firebox to get
the draft going.
• The supply air duct from outdoors can be partially or totally blocked.
Remove the hose and try test lighting with combustion air from the
room.
Check that the combustion air damper is in the correct position, see
the instructions
• The smoke outlet of the insert may be blocked with soot, which can
occur after sweeping. Lift the smoke baffle out and check.
• Finally, go through the lighting instructions again. Perhaps the amount
of kindling was too small and therefore the base embers were too weak
and cold to light the next load of wood.
Abnormal amounts of soot form on the glass
There is always a certain amount of soot on the glass and this is added to
with each lighting. Soot on the glass is caused by three things:
• The wood is damp, which causes poor combustion and generates a lot
of smoke as a result.
• Too low temperature in the firebox, which causes incomplete combus-
tion and poor draft in the chimney.
• Handling is not correct, for example the door was not in the lighting
position for 15 min.
Check the moisture content of the wood, ensure that you have good base
embers and go through the lighting instructions one more time.
Smoke odour around the insert for periods
This can occur when wind blows down the chimney and most often occurs
when the wind is from a particular direction. Another reason could be that
the door was opened when there was a lot of flame.
Painted parts have become discoloured
If painted parts have discoloured it is due to excessive temperature in
the firebox. The reason for the excessive temperature can be that the
maximum amount of wood has been exceeded, inappropriate fuel has been
used (for example building waste, large quantities of finely chopped off
cuts). The warranty does not cover damage of this type.
If a problem occurs that you cannot rectify yourself, contact the dealer or
a chimney sweep.
We hope that these lighting tips give you enjoyable, economical and problem free use of your Contura insert.
SWEEPING
Sweeping the chimney ducts and chimney connections should be carried out by a chimney sweep. Sweep
the cassette by scraping and/or brushing. A soot vacuum cleaner is most appropriate however.
If a chimney fire occurs or is suspected, the combustion damper and the door must be closed. If necessary, contact the fire brigade to extinguish it. The chimney must always be inspected by a chimney sweep
after a chimney fire.
• During operation, certain surfaces of the insert become very hot and can cause burn injuries
if touched.
• Also, take heed of the strong heat radiated through the door glass.
• Placing flammable material closer than the safe distance indicated may cause a fire.
• Smoulder combustion can cause quick gas ignition with the risk of damage to property and
personal injury.
LIGHTING INSTRUCTIONS
811216 IAV SE-E X Ci6-4
2015-03-23
Cont ura reserv es the right t o change colou rs, mater ials,
dimens ions and models a t any time wit hout special
notic e. Your dealer can g ive you the mo st up to date
infor mation. St oves shown in b rochures m ay have ext ra
equipment.
NIBE AB · Box 134 · SE-285 23 Markaryd · Sweden
www.contura.eu
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