Dovre 425 CB Parts list manual

INSTALLATIEVOORSCHRIFTEN EN GEBRUIKSAANWIJZING HOUTKACHEL
INSTALLATION INSTRUCTIONS AND OPERATING MANUAL WOOD STOVE
INSTALLATION ET MODE D’EMPLOI POELE A BOIS
EINBAUANLEITUNG UND GEBRAUCHSANWEISUNG HOLZ-FEUERSTÄTTE
INSTRUCCIONES DE INSTALACIÓN Y USO ESTUFA DE LEÑA
ISTRUZIONI PER L'INSTALLAZIONE E L'USO STUFA A LEGNA
03.27986.100 - 02/2012
09.20008.000
Houtkachel 425CB en 550CB

Table of contents
Introduction 3
Declaration of conformity 3
Safety 4
Installation requirements 4
General 4
Flue or chimney 4
Ventilation of the area 5
Floor and walls 6
Product description 6
Installation 7
Preparation 7
Fitting the legs 7
Fitting the handle and handle holder (model
550CB) 8
Preparing the connection to chimney 8
Installing and connecting 10
Use 10
First use 10
Fuel 10
Lighting 10
Burning wood 11
Extinguishing the fire 12
Removing ashes 12
Fog and mist 13
Solving problems 13
Maintenance 13
Chimney 13
Cleaning and maintenance 13
Appendix 1: Technical data 16
Appendix 2: Measurements 17
Appendix 3: Distance from combustible
material 19
Appendix 4: Diagnostic diagram 21
Index 22
2Subject to change because of technical improvements

Introduction
Dear user,
In buying this DOVRE heating appliance, you have
chosen a high quality product. This product is part of a
new generation of energy saving and environmentally
friendly heating appliances. These appliances make
optimal use of convection heat as well as thermal
radiation (radiant heat).
Your DOVRE appliance has been manufactured
with state-of-the-art production equipment. In the
unlikely event of a malfunction, you can always
rely on DOVRE for support and service.
The appliance is not to be modified; always use
original parts.
The appliance is intended for use in a living room. It
must be connected hermetically to a well-
functioning chimney.
We advise you to let an authorized and competent
installation company install the appliance.
DOVRE cannot be held liable for any problems or
damage resulting from incorrect installation.
Observe the following safety rules when installing
and using the appliance.
In this manual, you can read how the DOVRE heating
appliance can be installed, used and maintained
safely. Should you require additional information or
technical data, or should you experience an
installation problem, please contact your supplier first.
© 2012 DOVRE NV
Declaration of
conformity
Notified body: 2013
The undersigned
Dovre nv, Nijverheidsstraat 18 B-2381 Weelde hereby
declares
that the wood stoves 425CB and 550CB have been
produced in accordance with EN 13240.
Weelde 16-09-2005
Due to continuous product improvement,
specifications of the appliance supplied may vary
from the description in this brochure without prior
notice.
DOVRE N.V.
Nijverheidsstraat 18 Tel: [phone]
B-2381 Weelde Fax: [phone]
Belgium E-mail: [e-mail]
Subject to change because of technical improvements 3

Safety
Please note: All safety regulations must be
complied with strictly.
Carefully read the instructions for installation,
use and maintenance before you start using
the appliance.
The appliance must be installed in accordance
with the laws and requirements of your
country.
All local regulations and the regulations relating
to national and European standards must be
observed when installing the appliance.
Read the instructions for installation, use and
maintenance supplied with the appliance.
It is preferable to have the appliance installed
by an authorized and competent installation
company. They will be aware of the applicable
regulations and requirements.
The appliance is designed for heating
purposes. All surfaces, including the glass and
the connecting tube, can get very hot (over
100°C)! For operation, use a so-called "cold
hand" or an oven glove.
Don't place any curtains, clothes, laundry or
other combustible materials on or near the
appliance.
Don't use flammable or explosive substances
near the appliance when it is in use.
Avoid a chimney fire by having the chimney
swept regularly. Never burn wood with an open
door.
In the case of a chimney fire: close all air inlets
of the appliance and alert the fire brigade.
If the glass in the appliance is broken or
cracked, it must be replaced before you can
use the appliance again.
Make sure there is adequate ventilation in the
room where the appliance is installed. The
combustion will be incomplete in case of
insufficient ventilation, which results in toxic
gases being produced and spread through the
room. See the chapter "Installation
requirements" for more information on
ventilation.
Installation
requirements
General
The appliance must be connected tightly to a well-
functioning chimney.
For the connection measurements: see the
appendix "Technical data".
Ask the fire brigade and/or your insurance
company about any specific requirements and
regulations.
Flue or chimney
The flue or chimney is needed for:
Disposing of the combustion gases through natural
draught.
The warm air in the flue or chimney is lighter
than the outside air so it rises.
The intake of air, needed for the combustion of fuel
in the appliance.
A poorly functioning flue or chimney can cause smoke
to escape into the room when the door is opened.
Damage caused by smoke emissions into the room is
not covered by the warranty.
Do not connect multiple appliances (such as a
boiler for central heating) to the same flue,
unless local or national regulations allow this.
Ask your installer for advice regarding the flue. Refer
to the European norm EN13384 for a correct
calculation for the flue.
The flue must satisfy the following requirements:
4Subject to change because of technical improvements

The flue or chimney must be made of fire resistant
material, preferably ceramics or stainless steel.
The flue or chimney must be airtight and well
cleaned and guarantee sufficient draught.
A draught/vaccuum of 15-20Pa during normal
operation is ideal.
Starting from the flue spigot, the flue must run as
vertically as possible. Changes in direction and
horizontal pieces disrupt the outward flow of
combustion gases and may cause the deposit of
soot.
The interior measurements should not be too big, to
prevent the combustion gases from cooling down
too much, thereby reducing the draught.
The flue or chimney must ideally have the same
diameter as the connection collar.
For the nominal diameter: see the appendix
"Technical data". If the smoke channel is well
insulated, the diameter may be slightly bigger
(up to 2x the section of the connection collar).
The section (area ) of the smoke channel must be
constant. Wider segments and (in particular)
narrower segments disrupt the outward flow of
combustion gases.
When using a cover plate or exhaust hood: make
sure that the cover does not restrict the flue outlet
and that the cap does not impede the outward flow
of combustion gases.
The chimney must end in a zone that is not
affected by surrounding buildings, adjacent trees or
other obstacles.
The chimney part outside the house must be
insulated.
The chimney must be at least 4metres high.
As a rule of thumb: 60cm above the ridge of the
roof.
If the ridge of the roof is more than 3metres away
from the flue: stick to the measurements in the
following figure. A = the highest point of the roof
within a distance of 3 metres.
Ventilation of the area
For good combustion, the appliance needs air
(oxygen). That air is supplied via adjustable air inlets
from the area where the appliance is installed.
The combustion will be incomplete in case of
insufficient ventilation, which results in toxic
gases being produced and spread through the
area.
As a rule of thumb, the air supply should be
5.5cm²/kW. Extra ventilation is needed when:
The appliance is in an area that is well insulated.
There is mechanical ventilation, for example a
central extraction system or an extraction hood in
an open kitchen.
You can provide extra ventilation by having a
ventilation louvre installed in the outside wall.
Make sure that other air consuming appliances (such
as tumble-driers, other heating appliances or a bath
room fan) have their own supply of outside air, or are
switched off when you use the appliance.
Subject to change because of technical improvements 5

Floor and walls
The floor on which the appliance is placed must have
sufficient load bearing capacity. For the appliance
weight: see the appendix "Technical data".
Protect a flammable floor from heat radiation
by means of a fireproof protective plate. See
the appendix "Distance from combustible
material".
Remove combustible material such as
linoleum, carpets/rugs and similar materials
below the fireproof protective plate.
Keep enough distance between the appliance
and combustible materials such as wooden
walls and furniture.
The connecting tube radiates heat too. Ensure
that there is sufficient distance or a shield
between the connecting tube and combustible
material.
The rule of thumb for a single-walled tube is a
distance of 3x the diameter. If a lining shell is
fitted around the tube, a distance of 1x the
diameter is permissible.
Carpets and rugs must be at least 80 cm away
from the fire.
Protect a flammable floor from possible falling
ash in front of the fire with the aid of a fireproof
protective plate. The protective plate must
comply with national standards.
For the dimensions of the fireproof protective
plate: see the appendix "Distance from
combustible material".
For further requirements in connection with fire
safety: see the appendix "Distance from
combustible material".
Product description
1. Secondary air slide
2. Door
3. Adjustable leg
4. Primary air slide
5. Fire basket
6. Bolt
Features of the appliance
The appliance is supplied with height-adjustable
legs.
The appliance can be connected to the chimney at
the rear or at the upper side.
The appliance is suitable for the burning of wood.
The appliance is supplied with a scraper for
removing excess ash.
The appliance is supplied with a detachable
handle, the so-called "cold hand", in order to
6Subject to change because of technical improvements

operate the bolt when it is warm and to remove the
ash pan; see the following figure.
Additional features of the 550CB
model
This appliance is suitable for a side connection to
the flue gas outward flow, but can also alternatively
be connected on the upper or rear side.
The appliance is supplied with a loose handle, the
so-called "cold hand".
In order to open the door, place the "cold hand" (A)
in the bolt (B) on the door; see the following figure.
Installation
Preparation
Please check the appliance for damage caused
during transport or any damage or defects
immediately after delivery.
If you detect damage caused during transport
or any other damage or defects, do not use the
appliance and notify the supplier.
Remove the removable parts (fire-resistant inner
plates, fire basket, ash pan, fire grate) from the
appliance before you start installing the appliance.
By removing removable parts, it is easier to
move the appliance and to avoid damage.
Note the location of those removable parts, so
that you have no difficulties in installing the
parts in the right place later on.
1. Open the door.
2. Remove the fire-resistant inner plates.
Cast iron inner plates protect the combustion
chamber and dissipate heat to the
environment.
Fitting the legs
Fit the legs to the appliance; see the following figure.
1. Using the bolts supplied M6, fit the two parts of
the legs to the desired height.
2. Tilt the stove on its back.
3. Fit the four legs on the bottom plate using the
washers and the M8 nuts that are found on the
bottom plate.
Subject to change because of technical improvements 7

Fitting the handle and handle
holder (model 550CB)
The appliance is supplied with a loose handle, the so-
called "cold hand".
1. Fit the wooden handle to the adaptor using screw
M8x50 provided; see following figure.
09-20015.088
2. Fit the handle holder (A) supplied to the bottom
plate using the nut and bolt M8; see the following
figure.
Preparing the connection to
chimney
When connecting the appliance to the chimney you
have the choice of connecting via either the upper side
or the rear. See the paragraphs "Connecting on the
upper side" and "Connecting at the rear".
Model 550CB also has the option of connecting at the
side. See the instructions in the paragraph
"Connecting on the side (model 550CB)".
The appliance is not supplied with a flue gas
opening at the rear or on the upper side. However,
model 550CB has two flue gas openings on its
sides (one on the left and one on the right). If you
do not use one or both of the side connections,
cover the side connections(s) that you are not
using with the cover supplied.
Model 550CB is supplied with two covers that have
the Dovre logo on them.
Sealant and materials supplied.
When connecting to the upper side an opening has
to be made in the heat shield. At the spot when the
opening has to be made an incision has been made
in the heat shield.
Preparation for connection at the
rear side
Make the necessary opening in the heat shield.
8Subject to change because of technical improvements

1. Unhook the heat shield from the appliance.
2. Make the opening in the heat shield by cutting the
pre-cut section out of the heat shield using plate
shears.
3. Replace the heat shield back onto the appliance.
Connecting on the upper side or
the rear side
First make the flue gas opening in the appliance by
removing the connection cover. Use the equipment
provided: the tension piece, the washer, the nut and
bolt; see following figure.
1. In the centre of the connection cover, drill a hole
with a diameter of 10 mm.
2. Place the tension piece and the bolt on the inner
side of the connection cover.
3. Slide the washer over the bolt and tighten the nut
onto the bolt.
On enamelled appliances, place a piece of
cardboard measuring a minimum of 20 cm by
20cm between the washer and the appliance to
protect against chipping of the enamel.
4. Tighten the nut by hand. Use a small amount of
grease to make it easier to turn the nut.
5. Using a ring spanner, tighten the nut so that the
connection cover breaks out.
6. Once made a flue gas opening can be closed off
again with the supplied shut-off cover. Use the
mounting place and bolt M6x25 to fit the cover to
the appliance.
For model 550CB: cover the two flue gas
openings on the sides with the supplied covers
that have the Dovre logo on them.
7. Fit the connection collar (C)to the flue gas
opening (D) using the two brackets supplied (E)
and the fixing materials (A) and (B); see the
following figure.
8. Use the supplied stove sealant for sealing the
connection collar and the cover with the appliance.
Connecting on the side (model
550CB)
The appliance is supplied with a flue gas opening on
the left and right side.
1. Fit the connection collar (C)to the flue gas
opening (D) using the two brackets supplied (E)
and the fixing materials (A) and (B); see the
Subject to change because of technical improvements 9

previous figure.
2. Shut off the flue gas opening that is not being used
with one of the covers supplied that has the Dovre
logo on it. Use the materials supplied.
3. Use the supplied stove sealant for sealing the
connection collar and the cover with the appliance.
Installing and connecting
1. Install the appliance in the right place, and make
sure it is level.
2. Connect the appliance hermetically to the flue.
3. Install all the parts you removed in the right places
in the appliance.
Never use the appliance without the fire-
resistant inner sheets.
The appliance is now ready for use.
Use
First use
When you use the appliance for the first time, make
an intense fire and keep it going for a good few hours.
This will cure the heat-resistant paint finish. This may
result in some smoke and odours. You could open
windows and doors for a while in the area where the
appliance is located.
Fuel
This appliance is only suitable for the burning of
natural wood; sawn and chopped wood that is
sufficiently dry.
Do not use other fuels, as they can lead to serious
damage to the appliance.
You are not allowed to use the following fuels, as they
pollute the environment and because they heavily soil
the appliance and flue, which may lead to a chimney
fire:
Treated wood, such as scrap wood, painted wood,
impregnated wood, preserved wood, plywood and
chipboard.
Plastics, scrap paper and domestic waste.
Wood
Hardwood, such as from oaks, beeches, birches
and fruit trees, is the ideal fuel for your stove. This
type of wood burns slowly with calm flames.
Softwood contains more resins, burns faster and
gives off more sparks.
Use dried wood that contains no more than 20%
moisture. The wood must have dried for at least 2
years.
Saw the wood to size and split it when it is still
fresh. Fresh wood is easier to split, and split wood
dries more easily. Store the wood under a roof
where the wind has wind free access.
Do not use damp wood. Damp logs do not produce
heat as all of the energy is used in the evaporation
of the moisture. This will result in a lot of smoke
and soot deposits on the door of the appliance and
in the chimney. The water vapour will condense in
the appliance and can leak away through chinks in
the appliance, causing black stains on the floor. It
may also condense in the chimney and form
creosote. Creosote is a highly flammable
compound and may cause a chimney fire.
Lighting
You can check whether the flue has enough draught
by lighting a ball of paper above the baffle plate. A cold
flue often does not have enough draught and
consequently, some smoke may escape into the room
instead of up the chimney. By lighting the fire in the
way described here, you can avoid this problem.
1. Stack two layers of medium sized logs crosswise.
2. Stack two layers of kindling crosswise on top of
the logs.
3. Place a firelighter cube in the lower layer of
kindling and light the cube according to the
instructions on the packaging.
10 Subject to change because of technical improvements

4. Close the door of the appliance and open the
primary air inlet and the secondary air inlet of the
appliance; see the following figure.
5. Let this fire develop into a good blaze until there is
glowing bed of charcoal. You can then add fuel
and adjust the appliance, see the chapter "Stoking
with wood".
o= Open l= Closed
Burning wood
After you have followed the instructions for lighting:
1. Slowly open the door of the appliance.
2. Spread out the charcoal bed evenly across the
bottom of the fire compartment.
3. Stack a few logs on the charcoal bed.
Open stacking
If the logs are stacked openly, the wood will burn
quickly as the oxygen can reach each log easily. If
you want to use the stove for a short while, make an
open stack.
Compact stacking
If the logs are stacked tightly, the wood will burn more
slowly as the oxygen can only reach some logs
easily. If you want to burn wood for a longer period,
make a compact stack.
Subject to change because of technical improvements 11

4. Close the door of the appliance.
5. Close the primary air inlet and leave the secondary
air inlet open.
Fill the appliance up to one third capacity.
Advice
Never burn wood with an open door.
Regularly burn wood with intense roaring fires.
If you frequently have low intensity fires, tar
and creosote may be deposited in the chimney.
Tar and creosote are highly combustible
substances. Thicker layers of these
substances might catch fire when the
temperature in the chimney increases
suddenly and steeply. Therefore it is
necessary for the fire to regularly burn very
intensely, so that layers of tar and creosote
disappear.
Low intensity fires also cause tar deposits on
the stove window and door.
When the outside temperature is not very low,
it is better to burn wood intensely for a few
hours instead of having a low intensity fire for a
long period of time.
Control the air supply with the secondary air inlet.
The secondary air inlet not only supplies air to
the fire but to the glass as well, so that it does
not get dirty so quickly.
Open the primary air inlet for the time being if the air
supply by the secondary air inlet is inadequate or if
you want to fan the fire.
It is better to add a small amount of logs regularly
than to add many logs at the same time.
Extinguishing the fire
Do not add fuel and just let the fire go out. If a fire is
damped down by reducing the supply of air, harmful
substances will be produced and released. Therefore,
let the fire go out naturally. Keep an eye on the fire
until it has gone out. When the fire has died
completely, all air inlets can be closed.
Removing ashes
After the wood has been burnt, a relatively small
amount of ashes is left over. This bed of ashes is a
good insulating layer for the bottom of the fire
compartment and improves combustion. Therefore,
you can leave a thin layer of ashes on the bottom of
the fire compartment.
However, the air supply through the bottom of the fire
compartment must not be impeded and no ash should
be allowed to accumulate behind a cast iron inner
plate. Therefore, remove any excess ash frequently.
The appliance is fitted with a de-ashing grate to
remove the excess ash.
1. Open the door of the appliance.
2. Slide open the de-ashing grate (A); see the
following two figures.
12 Subject to change because of technical improvements

3. Using the scraper supplied, sweep the redundant
ashes through the ash removal port into the ash
pan underneath the grate.
4. Close the ash removal port.
5. Remove the ash pan using the "cold hand"
provided and empty the ash pan; see next figure.
6. Install the ash pan and close the appliance door.
Fog and mist
Fog and mist hinder the flow of flue gases through the
flue. Smoke can blow back and cause a stench. If it is
not strictly necessary, it is better not to use the stove
in foggy and misty weather.
Solving problems
Refer to the appendix "Diagnostic diagram" to solve
any problems in using the appliance.
Maintenance
Follow the maintenance instructions in this chapter to
keep the appliance in good condition.
Chimney
In many countries, people are legally required to have
their chimney checked and maintained.
At the beginning of the heating season: have the
chimney swept by an expert.
During the heating season and after the chimney
has not been used for a long time: have the
chimney checked for soot deposits.
After the heating season: seal off the chimney with
a ball of paper.
Cleaning and maintenance
Do not clean the appliance when it is still
warm.
Clean the exterior of the appliance with a dry lint-
free cloth.
At the end of the heating season, you can clean the
interior of the appliance thoroughly:
If necessary, first remove the fire-resistant inner
plates.
If necessary, clean the air supply ducts.
Remove the baffle plate at the top of the appliance
and clean it. See the chapter "Installation" for
instructions on removing and installing the baffle
plate.
Checking fire-resistant inner plates
The fire-resistant inner plates are consumables and
subject to wear. Check the fire-resistant inner plates
frequently and replace them when necessary.
See the chapter "Installation" for instructions on
removing and installing the inner plates.
The insulating vermiculite inner plates may
develop hairline cracks, but that does not
affect their performance adversely.
Cast-iron inner plates go a long way if you
frequently remove the ash that may pile up
behind them. If accumulated ash behind a
cast-iron plate is not removed, the plate cannot
dissipate the heat anymore to its surroundings
and that may cause the plate to warp or crack.
Never use the appliance without the fire-
resistant inner plates.
Removing the baffle plate
The baffle plate is secured with a bolt located between
the rear connection and the secondary air duct. The
bolt is fixed to the baffle plate.
1. Remove the nut on the rear side; see the following
figure.
Subject to change because of technical improvements 13

2. Pull the baffle plate forwards so that the bolt
comes free from the rear side.
3. Remove the baffle plate via the front door.
Cleaning glass
Dirt clings less easily to well-cleaned glass. Proceed
as follows:
1. Remove dust and loose soot with a dry cloth.
2. Clean the glass with stove window cleaner:
a. Apply stove window cleaner to a kitchen
sponge, rub down the entire glass surface and
give the cleaning agent time to react.
b. Remove the dirt with a moist cloth or kitchen
tissue.
3. Clean the glass again with a normal glass cleaning
product.
4. Rub the glass clean with a dry cloth or kitchen
tissue.
Do not use abrasive or aggressive products to
clean the glass.
Wear household gloves to protect your hands.
If the glass in the appliance is broken or
cracked, it must be replaced before you can
use the appliance again.
Make sure that no stove window cleaner runs
between the glass and the cast-iron door.
Maintaining enamelled fire
Never clean the appliance when it is still hot. The
enamelled surface of the fire can be cleaned most
effectively with a mild green soap and lukewarm
water. Use as little water as possible, rub the surface
dry and prevent the formation of rust. Wire wool or
other abrasives should never be used. Never place a
kettle directly onto an enamelled fire; use a stand and
prevent damage from occurring.
Lubrication
Although cast-iron is slightly self-lubricating, you will
still have to lubricate moving parts frequently.
Lubricate the moving parts (such as guide
systems,hinge pins, latches and air slides) with
heat resistant grease that is available in the
specialist trade.
Adjusting the air slider
If the air slider (C) of the secondary air inlet does not
move easily, you can adjust the air slider using the
two screws (A) and (B) in the front plate; see following
figure.
Touching up damaged paint
Small areas of damaged paint finish can be touched
up with a spraying can of special heat-resistant paint
finish available from your supplier.
Touching up the enamelled surface
Enamelling is a process carried out by traditional
methods, meaning that it is possible that small colour
14 Subject to change because of technical improvements

differences and damage may occur. The appliances
undergo a visual inspection in the factory, that is to
say, the inspector looks at the surface for a period of
10 seconds from a distance of 1 metre.
Any damage that does not stand out is regarded as
OK. A special heat-resistant paint is supplied along
with the apparatus, with which minor damage caused
during transport can be touched up.
Apply the heat-resistant paint in thin layers and leave
to dry well before using the appliance.
Checking the seal
Check whether the sealing rope of the door is still
in good condition and works well. The sealing rope
is subject to wear and needs to be replaced in time.
Check the appliance for air leaks. Close any
chinks with stove sealant.
Let the sealant harden fully before you start a
fire in the appliance, because otherwise any
moisture in the sealant will form bubbles in the
sealant and cause a new air leak.
Subject to change because of technical improvements 15

Appendix 1: Technical data
Model 425CB and 550CB
Nominal output 8 kW
Flue connection (diameter) 150 mm
Weight +/- 115 kg
Recommended fuel Wood
Fuel property, max. length 40 cm
Mass flow of flue gases 5.6 g/s
Temperature increase measured in measuring section 257 K
Temperature measured downstream from the flue spigot 415
Minimum draught 13 Pa
CO emission (13%O2) 0,09 %
NOx emission (13%O2) 140 mg/Nm³
CnHm emission (13%O2) 114 mg/Nm³
Particulate emission 36 mg/Nm³
Particulate emission in accordance with NS3058-NS3059 8.28 gr/kg
Efficiency 78,8 %
16 Subject to change because of technical improvements

Appendix 2: Measurements
425CB
09.20017.009
Subject to change because of technical improvements 17

550CB
550
765-845
220-300
445
380
640-720
Ø150
Ø150
150
09-00085-000_550CB
18 Subject to change because of technical improvements

Appendix 3: Distance from combustible material
425CB and 550CB - Minimum distances in millimetres
09.20017.039
*Protective (insulated) connection pipe
Combustible material
Incombustible material, thickness 100 mm
Subject to change because of technical improvements 19

425CB and 550CB - Dimensions of fireproof protective plate
A
B B
09-20002-004
Minimal dimensions of fireproof protective plate
A (mm) B (mm)
Din 18891 500 300
Germany 500 300
Finland 400 100
Norway 300 100
20 Subject to change because of technical improvements