Morso 3440 User manual

MORSØ JERNSTØBERI A/S . DK-7900 NYKØBING MORS
E-Mail: [email protected] · Website: www.morsoe.com
MORSØ JERNSTØBERI A/S . DK-7900 NYKØBING MORS
E-Mail: [email protected] · Website: www.morsoe.com
Instructions for Installation and Use
3410 & 3440
EN 13240 · (80,1% Efficiency)
DEFRA approved for use in United Kingdom smoke control areas
Distributed by: Morsø UK
Valley Drive · Swift Valley · Rugby, Warks CV21 1TW · England

2
ENG
CONTENTS
1.0 Installing your Morsø stove Page
1.1 Unpacking the stove 3
1.2 Installing the stove 3
1.3 Chimneysweep 3
1.4 Stove placement/clearance requirements 3
1.5 The chimney 5
1.6 Pipe connections 5
1.7 Connecting to a masonry chimney 6
1.8 Connecting to a steel chimney 6
1.9 Draft conditions 7
2.0 Firing the stove 8
2.1 Lighting instructions and fuelling intervals 9
3.0 Routine stove maintenance
3.1 External maintenance 12
3.2 Internal maintenance 12
3.3 Cleaning the stove 13
4.0 Alternative fuel types 14
5.0 HETAS amendments 16
Enjoy your new Morsø stove!
Morsø, the largest stove manufacturer in Denmark,
has been making cast-iron stoves of the highest qual-
ity since 1853. By carefully following the instructions
below, we are certain that you will enjoy many years of
comfortable warmth from your new Morsø stove.
Additional accessories
Morsø also offers a comprehensive line of floor plates and accessory products that can facili-
tate the safe and efficient operation and maintenance of your Morsø stove.
Cast iron
Cast iron is a live material. There are no two ovens that are identical. This is partly due to the
tolerances of the casting process, partly because the ovens are a work of craftsmanship.

3
ENG
1.1 Unpacking the stove
3410: After removing the outer packaging, flatten it and lay onto the floor close to the stove;
this can then act as protective work surface during the assembly process.
Next, remove the legs and bolts from inside the stove. Gently lay the stove onto its back and
unscrew it from the wooden pallet. Using the bolts supplied, now screw the legs into position
on the underside of the base. The stove should now be lifted and moved into the upright po-
sition, avoiding excess load on the back legs.
3440: Remove the stove from the pallet and place it carefully into the right position.
The stoves are heavy and therefore it is strongly recommended that when lifting, it is under-
taken by two people. Morsø 3410 weighs 100 kg, Morsø 3440 weighs 116 kg,
The stove is intended for intermittent use.
1.2 Installing the stove
The stove and chimney installations MUST comply to all current National and Local Build-
ing Regulations; your approved Morsø dealer or your local building control officer can advise
regarding this. Ultimately, it is you and your installer who is responsible that the installation
complies.
1.3 Chimney sweep
It may also be wise to consult your local chimney sweep before installing the stove. After your
stove has been installed, it is advisable to have the chimney checked and swept at least once
a year. In any case, if your chimney has not been used for some time, it should be inspected
for cracking, bird nests, etc. before it is put back into use.
1.4 Stove placement/clearance requirements
Minimum Clearance requirements apply if the stove is placed near to combustible materials.
Permitted clearances to combustible materials are also indicated on the data plate on the rear
of the stove.
In situations where the stove is to be fitted into a brick or non-combustible recess, we recom-
mend that the stove is installed with at least 10 - 15 cm clearance to the wall, this will allow
heat to circulate around the stove; also the maintenance of the outside stove is easier. When
applied to masonry, a layer of wallpaper is normally classified as a non-combustible surface.
Howerver, thery may be a degree of discolouration particularly where blow vinyl papers are
used.
1.0 Installing your Morsø stove

4
ENG
Minimum clearances to combustible surfaces:
On the floor
National and Local Building Regulations must again be observed when considering the type,
thickness and area of the hearth to be used in the installation. The hearth temperature under
safety test was less than 65°C.
One should of course always make certain that the underlying floor surface can bear the
weight of the stove.
Clearances to Furniture
The clearance requirement from the stove to any furniture should be no less than 800 mm. It
is always necessary to assess whether or not any furniture or other objects situated close-by
can be affected by heat, i.e. dried out.
The distance to any combustible material in front of the stove is minimum 800 mm.
The surface of a wood burning stove gets extremely hot when used and therefore special at-
tention to safety is paramount, especially where children or the infirm are present.
3410 corner installation 3440 corner installation
Stove type Behind the
stove (A)
To the sides Above the stove
of the stove (B)
Clearances to
furniture
Morsø 3410
uninsolated flue
400 mm 600 mm 600 mm 800 mm
Morsø 3410
insulated flue
Morsø 3440
uninsulated flue
Morsø 3440
insulated flue
200 mm
350 mm
200 mm
600 mm 600 mm
350 mm 600 mm
300 mm 600 mm
800 mm
800 mm
800 mm
B
B
45°
Revisions
Rev.
Sign.:
Title:
Drawing no.:
Dim. without indication of margin acc. to DS/ISO 2768-1 m
1:10
Afstand til hjørnevæg
Distance to Corner wall
Morsø 3400
RSV
26.11.2009
A4
Dimension Skecth
Date of print: 27-11-2009
U:\udv\Tegninger\Diverse\Afstand til brandbare vægge\Afstand til hjørnevæg.SLDASM
3400-152 a
Itemno.:
This drawing is Morsø Jernstøberi A/S' property and must not be sold, lended or copied without any written authorization from the company.
Material:
Weight:
Model no.
Drawingtype:
Location of file:
Scale:
Format:
Released:
Construction:
Date:
Side 2 of 6
B
A
Revisions
Rev.
Sign.:
Title:
Drawing no.:
Dim. without indication of margin acc. to DS/ISO 2768-1 m
1:10
Afstand til hjørnevæg
Distance to Corner wall
Morsø 3400
RSV
26.11.2009
A4
Dimension Skecth
Date of print: 27-11-2009
U:\udv\Tegninger\Diverse\Afstand til brandbare vægge\Afstand til hjørnevæg.SLDASM
3400-152 a
Itemno.:
This drawing is Morsø Jernstøberi A/S' property and must not be sold, lended or copied without any written authorization from the company.
Material:
Weight:
Model no.
Drawingtype:
Location of file:
Scale:
Format:
Released:
Construction:
Date:
Side 1 of 3
45°
A
A
Revisions
Rev.
Sign.:
Title:
Drawing no.:
Dim. without indication of margin acc. to DS/ISO 2768-1 m
1:10
Afstand til hjørnevæg
Distance to Corner wall
Morsø 3400
RSV
26.11.2009
A4
Dimension Skecth
Date of print: 27-11-2009
U:\udv\Tegninger\Diverse\Afstand til brandbare vægge\Afstand til hjørnevæg.SLDASM
3400-152 a
Itemno.:
This drawing is Morsø Jernstøberi A/S' property and must not be sold, lended or copied without any written authorization from the company.
Material:
Weight:
Model no.
Drawingtype:
Location of file:
Scale:
Format:
Released:
Construction:
Date:
Side 3 of 6

5
ENG
1.5 The chimney
Only if National or Local Regulations permit are you permitted to connect a stove into a chim-
ney that is shared by another appliance. YOU MUST be aware of any applicable Regulations
in this respect.
The wood-burning stove must never be connected to a chimney to which a gas-burning stove
or appliance is connected. An efficient modern stove places heavy demands on the chimney,
and you should have the chimney regularly swept and inspected by your approved chimney
sweep. The cross-sectional area of the chimney (at its narrowest point) must comply with Na-
tional and Local Building Regulations. Generally, the area needed for a Morsø wood-burning
stove installation should measure at least 175 cm2 (150 mm diameter).
An over-sized chimney is generally hard to keep warm and results in poor draft. In cases
where there is an oversized masonry chimney, it is recommended that the chimney be lined
using an appropriate chimney lining system with the correct internal diameter.
With respect to the chimney termination, all chimneys should terminate in accordance with
National and Local Building Regulations. Note that National and Local Regulations also apply
with regard to the placement of chimneys and flues in connection with thatched roofs. See
the section on Draft Conditions, 1.9.
The chimney or flue system must be equipped with access doors for inspection and cleaning.
The size of the cleaning door in the chimney must at least equal to that of the cross-sectional
area of the chimney. In the event that a chimney fire occurs resulting from faulty operation or
prolonged use of damp wood fuel, close the air vents completely and contact your local fire
department immediately.
1.6 Fluepipe connections
The stove comes standard with a smoke outlet (1) and a ball lock (3) at the top, and a cast-
iron cover mounted on the cast-iron back panel behind the convection back panels. If you
want to install the stove with the smoke outlet at the back, knock the iron plates on the con-
vection back panels out of the small “bridges”
which hold the plates in place, using light,
steady hammer taps. Unbolt the cast-iron
cover from the back panel by turning it anti-
clockwise, and install it in the top plate by
pushing it down and turning it clockwise. The
cover can work as a clean-out cover, making
access easier for the annual cleaning of the
stove. Centre the smoke outlet in the hole at
the back of the stove and bolt it securely in
place with the bolts and clamps provided. The
ball lock is not used, if the stove is fitted with
the outlet at the back.
Please note: During firing, the cleaning val-
ve (2) must always be installed correctly in
the baffle as the top cover may otherwise
overheat and sustain permanent damage.

6
ENG
1.7 Connecting the stove to a masonry chimney
A wall sleeve should be bricked securely into the wall of the chimney at the appropriate height
and the stovepipe inserted centrally. The pipe must not extend into the actual chimney open-
ing, but rather must reach only to the inside of the chimney aperture. The gap between the
stovepipe and sleeve must be sealed using glass fibre packing rope.
Only use stovepipe components that comply to National and Local Building Regulations.
1.8 Connecting to a stainless steel insulated chimney system
If your installation involves taking the chimney straight up and through the ceiling, you must
comply with National, Local Building Regulations or flue manufacturers instructions concern-
ing clearances to combustible materials such as walls, floor joists and ceilings. The joint be-
tween the stove flue collar and the stovepipe must also be sealed using the glass fibre rope
provided. It is important that the insulated flue system is properly supported both at ceiling
level and at roof level. THE STOVE MUST NOT BEAR THE WEIGHT OF THE CHIMNEY SYS-
TEM (See chimney manufacturer’s instructions). Excessive weight on the stove will inhibit ex-
pansion and could lead to damage of the stove top. Damage caused to the stove in this way
would not be covered by the manufacturers guarantee.
In the event that a chimney fire occurs resulting from faulty operation or prolonged use of
damp wood fuel, close the air vents completely and contact your local fire department im-
mediately.
Be aware of the following:
Cleaning procedure: Discuss this with chimney sweep or qualified installer prior
to or during the stove installation.
Chimney draft: If the chimney draft is naturally poor it is better to install the flue
from the top of the stove so as to minimise any internal resistance of the flue gases.
Avoid having any more than 2 bends in the flue system and limit the length of the
offset between bends.
Fresh air supply
A wood-burning stove requires air for combustion and therefore you may need to
install additional ventilation to the room, especially so in well insulated houses. If
the air supply is inadequate the chimney draft may be too weak, with the possible
result that the stove will not burn properly; smoke spillage may also occur during
the refuelling process.
On a positive note, a properly installed wood-burner will give even the most ef-
ficient houses a pleasant and natural ventilation.

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ENG
1.9 Draft conditions
If smoke spillage occurs when the fire door is opened, it is probably due to poor chimney
draft. This type of stove requires at least 12 pa of chimney draft to achieve satisfactory com-
bustion and smoke spillage prevention. However, in cases where the stove door is opened
too vigorously you could expect that slight smoke spillage may occur. The flue gas tempera-
ture at the rated output is 272˚ C relative to 20˚ C. The flue gas flow is 6.7 gr/sec.
If you have some doubts you can ask you local sweeper to measure the draught of the chim-
ney.
Draft conditions
The chimney’s draft is the resulting effect within the flue caused by the difference in
temperature within the flue and the cooler temperature outside. Other factors that
can influence the level of draft include the length of the flue, insulation of the chim-
ney, adverse weather conditions or tall buildings or trees nearby the flue terminal.
Poor draft occurs when:
• Theatmospherictemperaturedifferenceistoolow,e.g.apoorlyinsulatedchim-
ney. If the chimney is excessively cool, it may help to ‘prime’ the flue before the
fire is lit. Just place a screwed-up sheet of newspaper in the flue-ways of the sto-
ve and ignite.
• Theoutsidetemperatureistoohigh,e.g.duringthesummermonths.
• Thereisnoairmovement(wind)outside.
• Thechimneyisnottallenough,withtheresultthattheterminalsitsintheleeof
the roof surface or in the vicinity of tall trees or neighbouring buildings. These
conditions are also associated with downdraft where the flue gases are pushed
back down the chimney.
• Fluedraftisdilutedbyresidualairenteringthechimney,e.g.duetoinadequate
flue-pipe joints or leaks at the cleaning door or flue collar.
• Unsealed,unusedreplacesareconnectedtothechimney.
• Theueisblocked,e.g.bysoot,duetoinadequatecleaning,loosedebrisoreven
a birds nest.
•Thehouseistootightlysealed(seesectiononFreshairsupply).
A good draft is achieved when:
• Thetemperaturedifferencebetweenthechimneyandoutsideishigh.Thisalso
applies during firing, when the need is greatest.
• Theweatherisclearandthereisagoodwind.
• Thechimneyisoftheproperheight,i.e.minimum4metersoverthestoveand
the termination adequately clear of the roof line.

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ENG
2.0 Firing the stove/Using your stove
The heat output of your stove is regulated by means of the 3 air inlets. The primary air supply,
i.e. the air which passes through the shaking grate, is controlled by left handle under the ash lip,
while the secondary air supply, i.e. the air supplied to the fire across the glass window, is con-
trolled by the right handle.
A third flow of air is supplied right over the fire and takes care of burning the gasses that are
freed last from the wood when it is heated. This flow may be regulated with the handle behind
the stove in the left side; however, on EN approved stoves, it must be set in the lowest position.
The stove’s rated heat output is 6,5 kW. The efficiency is 74%. Your new Morsø stove is EN-
tested and recommended to be fired with wood. The stove is intended for intermittent use.
The stove is equipped with a removable handle; for safety reasons it should be removed dur-
ing use, especially where children are nearby.
N.B!
Wood is a material that contains a great deal of gas (approximately 75 %). The gas-
es are released when the wood is lit and heated up. For this reason, it is important
that the gases are ignited quickly after stoking. If the wood just lies smouldering,
especially after re-stoking, a lot of smoke is created, which, in the worst case, may
cause an explosive ignition of the gasses, resulting in damage to the stove. In or-
der to ignite the gases that are released from the wood, and to keep clear, lasting
flames during the combustion process, it is important to let in the required quantity
of oxygen (air supply) at all times.
The setting of the air supply, the method of ignition and the lighting intervals de-
pend on the draught in the chimney, the wind and weather, the amount of heat re-
quired, the fuel, etc. This means that it may take some time before you get to know
the correct functioning of the stove under any given circumstances.
Although you can fire your Morsø stove with almost all kinds of wood, you should
not fire with wet wood, or unseasoned wood. Wood ought to be stored under a roof
for at least 1 year, and preferably 2 years, with free access to wind. Wood should
be chopped as soon as possible after felling if it is to dry quickly. The wood can be
used once the moisture content is less than 20%. During the EN test, all stoves are
tested with wood with a moisture content of (16 ± 4)%.
Never use driftwood, as it usually has a high salt content, which damages both the
stove and the chimney. Impregnated and painted wood and chipboard emit poison-
ous smoke and fumes, so they should not be used as fuel either.
Please note that liquid fuel may not be used in the stove.
Pieces of wood with a diameter greater than 10 cm should always be chopped.
The pieces of wood should be short enough to be able to lie flat over the layer of
embers, with air at both ends. The maximum length of fuel in the stove is 36 cm.
The maximum quantity of fuel is 2.5 kg/hour (max. 3 pieces of wood each time you
re-stoke). The first few times you light the stove, the fire should be moderate, so
that the heat-resistant paint can harden before firing more vigorously. During the
hardening phase, the paint may develop obnoxious smoke and smell the first time
it is lit, which is very normal. Make sure that the room is well ventilated during this
period.

9
ENG
1. A layer of embers will form rapidly if the stove is lit
with 2 - 4 fire lighters or 7 - 10 rolled up sheets of
newspaper, underneath roughly 1-2 kg of dry kind-
ling.
2. Fully open the secondary air supply that is control-
led by the right handle beneath the ash lip.
3. After the paper/fire lighters have caught fire, leave
the fire door ajar about 2-3 cm, so that the chim-
ney draws well.
4. After 5-10 minutes the chimney draft should be es-
tablished, at this point close the fire door. If all the
necessary conditions are met, a nice layer of em-
bers will start to accumulate after another 15 - 20
minutes.
2.1 Lighting and refuelling intervals
Kindling (dry sticks) requires a large volume of air for quick combustion. When lighting the
stove from cold it will help to keep the main door ajar (2-3cm) for the first few minutes and
the air supply should be fully open during lighting (right handle). When only burning wood it is
recommended that a 1 cm deep ash bed be established and maintained on the grate of the
stove.
When firing with wood, the riddling grate must be closed, i.e. the riddling lever must be
pushed all the way in. When draught is poor, letting in a little primary air through the grate
may facilitate firing; however, it should be noted that this supply of air may cause temporary
sooting of both stones and glass. If primary air is used, the riddling grate must be opened by
pulling out the riddling lever.

10
ENG
5. Refuelling of your stove should be done while
there are still glowing embers in the bed. Spread the
embers across the bottom, but concentrated most-
ly towards the front of the stove.
6. Place three pieces of fuel weighing roughly 0.7 kg
and measuring about 30 cm in length across the
embers in one layer, with spacing of roughly 1 cm
between the pieces of wood.
7. When the secondary air supply is opened all the
way and the door is closed, the new fuel will ignite
in a few minutes.
8. Once the new fuel has taken, adjust the secondary
air amount to the desired setting; optimal combus-
tion will continue until glowing charcoals are pro-
duced.
Under normal chimney draft conditions, expect to
refuel your stove every 70 - 80 minutes.
9. A new charge of wood can be added by repeating
steps 5 & 6.

11
ENG
Comparison between wood-burning and oil-burning
Type of wood (moisture content 20%) No. of cubic metres per 1000 litre of oil
Oak 7.0
Beech 7.0
Ash 7.2
Sycamore 7.5
Birch 8.0
Elm 8.9
Common spruce 10.4
Silver fir 10.9
The stove door should normally be opened gently the first 2 - 3 centimetres, then you should
wait until the pressure has equalised before opening the door all the way. This technique will
prevent smoke from getting out, particularly when there is a poor draught.
The stove door should never be opened when the stove is being fired vigorously.
Once the wood has burned out, it becomes glowing charcoal. If a good layer of embers has
already formed on top of a sufficient layer of ash, the stove can keep warm for a very long
time, not least due to the favourable qualities of the cast iron.
We would strongly recommend that you do not leave your stove alit at night.
It harms the environment, and constitutes very poor use of the wood, as the
gases in the wood do not ignite at the low temperature, but settle as soot
(unburned gases) in the chimney and stove. Extreme conditions, such as
poor draught in the chimney, large quantities of wood or wet wood, may, in
the worst-case scenario, cause an explosive ignition.
When firing in the summer period, when there is minimal need for heat, the
combustion will be poor. The stove provides too much heat, so the combus-
tion should be reduced. But always remember to make sure that there are
lasting flames until the wood becomes charcoal. If you want a weaker fire,
stoke up using less wood.
If you fire the stove using wet wood, a lot of the fuel’s thermal energy will be
spent forcing the water out of the wood, without releasing any heat to the
stove. This incomplete combustion results in a layer of soot being left in the
stove, pipe and chimney.

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ENG
3.0 Routine stove maintenance
3.1 External maintenance
The surface of the stove is painted with heat-resistant Senotherm paint. If the stove is used
too vigorously, the painted surface may take-on a greyish tinge. It is easily maintained by sim-
ply vacuuming the surface with a soft brush attachment and applying two light layers of paint.
Morsø stoves are painted in Morsø dark grey. The touch-up paint is available either as aerosol
spray or as regular brush-on.
3.2 Internal maintenance
Glass
If the stove is used and installed onto a flue with the correct draft, very little or no deposits
should appear on the Glass. It is usual for soot deposits to appear during long slumbering
fires however, once the fire has been re-established to a burn brightly, these deposits should
burn off.
If the glass window becomes thoroughly covered in soot due to faulty operation or poor draft,
the soot can be easily removed using, e.g. Morsø Glass Cleaner, but please ensure that the
glass is cold before cleaning. Avoid fuelling the stove with wood that is so long that it presses
against the glass when the door is closed.
Ceramic glass replacement
Ceramic glass cannot be recycled because it has a higher melting point that ordinary glass.
If ceramic glass is mixed with ordinary glass, the raw material is spoiled, and the reclaiming
process may be halted. Take care that the ovenproof glass does not end up among ordinary
recycled waste. That will be a great benefit to the environment.
Note: Should be handed in to a recycling station as ceramic glass.
Internal cast-iron parts and/or wear components
The shaking grate, baffle plate and other internal components that are in direct contact with
the fire are all constituted as ‘wear’ components or consumables, as, they are exposed to the
most wear. When used properly, these parts will last for many years, but overly vigorous use
will naturally shorten the lifespan. The aforementioned parts are all easily replaceable. If the
baffle plate is damaged or warped and is not replaced in time, the top plate could become
subject to excessively high temperatures, which may lead to damage here also.
Note: that no unauthorised alterations to the stove design should be undertaken, and
always ensure that any replacement parts purchased are Morsø original parts.
Reasons for sooted glass window:
• fuelistoowet(green)
• piecesoffuel/uncutwoodaretoothick
• operatingtemperatureofthestoveistoolow
• toomuchaircomingthroughbottomgrate
• POORCHIMNEYDRAFT

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ENG
Reasons for premature wear of internal parts
• Stovebeingused/redtoovigorously
• Toolittleairpassingthroughthebottomgrate
• Useofexcessivelydrywood(woodfromoldfurniture)
• Excessivedebriscollectiononbafeplateorinnerreback
(see section on cleaning)
• Ashleveltoohighintheashpan(seesectiononash)
Gaskets
The rope gaskets in the door will need regular inspection in order to ensure and maintain full
control of your stove’s burning rate; over time the rope gaskets will harden and will become
less airtight, at this point you will need to remove and replace with new. Use only the genuine
Morsø gasket kit, which comes with detailed replacement instructions.
NOTE:
Normal wear components (inner parts) are not covered by Morsø’s 10-year guarantee.
Maintenance products (Spare Parts, Glass Cleaner, Paint, Gasket Kit, etc) are all available
from your authorised Morsø dealer.
3.3 Cleaning the stove
During normal use and sweeping of your stove and chimney, a layer of ash, soot or debris
can form, particularly on the top of the baffle plate or inner fireback. Any deposits allowed to
build-up over time will have an insulating effect on these parts, thus restricting expansion; this
will ultimately result in a shorter lifespan. The cast access door in the baffle plate can eas-
ily be removed from the stove and should be regularly checked for debris and cleaned. You
must ensure that your chimney sweep removes all soot and debris from the stove after the
sweeping process.
Your chimney should be swept at least once a year; however a regular inspection of your
stovepipe and chimney will determine whether a more frequent approach should be adopted.
Ash
In order to achieve the highest combustion temperature possible when burning solely wood,
it is important that a 1cm deep bed of ash is established on top of the grate area. Excess ash
should be removed by simply agitating the grate by moving the riddling rod on the outside
of the stove; surplus ash will fall into the ash pan below the grate where it can be easily and
safely removed.
Be sure to empty the ash pan before it gets completely full; if the ash level reaches the under-
side of the grate, air flow through the grate will be restricted and will lead to over-heating and
premature wear of the grate parts.
When emptying the ash pan always dump the waste ash into a metal container (dustbin)
where it can fully cool before being taken away by your refuse collector. Ash from a wood-
burning stove does not benefit your garden as fertiliser.

14
ENG
4.0 Alternative fuel types
Your new Morsø stove is EN-approved for burning wood.
However, the stove is capable of burning other solid fuels as manufactured smokeless coal
or good quality anthracite (stove nuts). If you fire your stove with any fuel other than wood, it
may help to use coal insert/fuel economisers (available for most models), which simply fit into
the left and right sides of the firebox. Designed primarily to guide the solid fuel over the grate
area they also slightly reduce the firebox capacity allowing you to have smaller fires.
This is an additional accessory and can be purchased from your authorised Morsø dealer.
BITUMINOUSHOUSECOALSHOULDNEVERBEUSEDINYOURSTOVE.
Before burning solid fuel
Install the coal insert (where available) into the left and right sides of the firebox.
All stove models are supplied with 1 front grate bar, however in the case of the 1400 series an
optional second front grate bar can be purchased from your Authorised Morsø Dealer. A sec-
ond front grate bar will allow for a deeper fire bed and a longer burn time.
IN ALL MODELS NEVER LOAD THE FUEL ABOVE THE FRONT GRATE BAR LEVEL.
Lighting with solid fuel
All air vents must be fully open during the lighting process.
Start by placing 5-10 crumpled sheets of newspaper or 2 Morsø firelighters on the grate of
the stove; then carefully spread approximately 1 kg of well-dried kindling on the top. Light the
paper/firelighters. Once the kindling has fully ignited, gradually add a small quantity of solid
fuel, adding a little bit more once it has ignited. Continue in this manner until the entire grate
is covered with glowing coals. The level of fuel in the stove should never exceed the level of
the front grate(s). Once the bottom half of the fuel bed is glowing, you should partly close the
bottom vent (on the ash pit door). Once the stove has reached your desired temperature you
can maintain the output by opening further for more heat or closing for less heat. The top air
regulator must always be open just enough so that the flames burn almost clearly and the
ceramic glass window stays clean.
Note: In cases where smokeless fuels containing petrocoke are burned, a pale
greyish layer may be deposited on the inner glass surface when the stove is lit.
Fuels containing a high content petrocoke may cause a glistening in the sur-
face of the ceramic glass. Although visible, the structure of the glass will remain
intact and the stove safe. Glass is not covered by the manufacturer’s 10-year
guarantee.

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Maintenance parts
Description Product Code
Riddling grate 44162500
Intermediate Grate Frame 34341300
Inner Grate Frame 44132100
Baffle plate, complete 54346161
Access door (at baffle) 34341400
Door Glass 79340000
Side brick - front 79341100
Side brick - rear 79341000
Back brick 79341200
Brick securing bar 54340100
Front grate 34342000
In order to maintain the combustion process, the entire grate area must remain covered by
glowing coals. If the coal layer is too shallow you will have less heat and it would not be nec-
essary to supply air via the top vent.
You must empty the ash pan whenever it becomes full. Different fuels have different ash con-
tent and therefore the regularity of the de-ashing process can vary.
Fuel storage
Your fuel supply should always be stored in a suitable, weather-tight coal bunker. These are
usually available through your approved coal merchant.

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Health and safety precautions
Special care must be taken when installing the stove such that the requirements of the Health
and Safety at Work Act are met.
Handling
Adequate facilities must be available for loading, unloading and site handling.
Fire Cement
Some types of fire cement are caustic and should not be allowed to come into contact with
the skin. In case of contact wash immediately with plenty of water.
Asbestos
This stove contains no asbestos. If there is a possibility of disturbing any asbestos in the
course of installation then please seek specialist guidance and use appropriate protective
equipment.
Metal Parts
When installing or servicing this stove care should be taken to avoid the possibility of per-
sonal injury.
Note of references to the current UK regulations
In all cases the installation must comply with current Building Regulations, Local Authority
Byelaws and other specifications or regulations as they affect the installation of the stove.
It should be noted that the Building Regulations requirements may be met by adopting the
relevant recommendations given in British Standards BS 8303, BS EN 15287-1:2007 as an
alternative means to achieve an equivalent level of performance to that obtained following the
guidance given in Approved Document J.
Please note that it is a legal requirement under England and Wales Building Regulations that
the installation of the stove is either carried out under Local Authority Building Control ap-
proval or is installed by a Competent Person registered with a Government approved Com-
petent Persons Scheme. HETAS Ltd operate such a Scheme and a listing of their Registered
Competent Persons can be found on their website at www.hetas.co.uk.
This stove must not be installed into a chimney that serves any other heating appliance.
More detailed advice about existing chimney usage
NOTE: A chimney height of not less than 4.5 metres measured vertically from the outlet of the
stove to the top of the chimney should be satisfactory. Alternatively the calculation procedure
given in EN 13384-1 may be used as the basis for deciding whether a particular chimney de-
sign will provide sufficient draught.
The outlet from the chimney should be above the roof of the building in accordance with the
provisions of Building Regulations Approved Document J.
If installation is into an existing chimney then it must be sound and have no cracks or other
faults which might allow fumes into the house. Older properties, especially, may have chim-
ney faults or the cross section may be too large i.e. more than 230 mm x 230 mm. Remedial
action should be taken, if required, seeking expert advice, if necessary. If it is found neces
5.0 HETAS amendments

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sary to line the chimney then a flue liner suitable for solid fuel must be used in accordance
with Building Regulations Approved Document J.
Any existing chimney must be clear of obstruction and have been swept clean immediately
before installation of the stove. If the stove is fitted in place of an open fire then the chimney
should be swept one month after installation to clear any soot falls which may have occurred
due to the difference in combustion between the stove and the open fire.
If there is no existing chimney then any new system must be to the designation described
above and in accordance with Building Regulations Approved Document J.
A single wall metal fluepipe is suitable for connecting the stove to the chimney but is not
suitable for use as the complete chimney. The chimney and connecting fluepipe must have a
minimum diameter of 150 mm and its dimension should be not less than the size of the outlet
socket of the stove.
Any bend in the chimney or connecting fluepipe should not exceed 45°. 90° bends should
not be used.
Combustible material should not be located where the heat dissipating through the walls of
fireplaces or flues could ignite it. Therefore when installing the stove in the presence of com-
bustible materials due account must be taken of the guidance on the separation of combu-
stible material given in Building Regulations Approved Document J and also in these stove
instructions.
If it is found that there is excessive draught in the chimney then a draught stabiliser should
be fitted. Fitting of a draught stabiliser will affect the requirement for the permanent air supply
into the room in which the stove is fitted in accordance with Approved Document J (see also
combustion air supply).
Commissioning and handover
Ensure all parts are fitted in accordance with the instructions.
On completion of the installation allow a suitable period of time for any fire cement and mor-
tar to dry out, before lighting the stove. Once the stove is under fire check all seals for sound-
ness and check that the flue is functioning correctly and that all products of combustion are
vented safely to atmosphere via the chimney terminal.
On completion of the installation and commissioning ensure that the operating instructions
for the stove are left with the customer. Ensure to advise the customer on the correct use of
the appliance and warn them to use only the recommended fuel for the stove.
Advise the user what to do should smoke or fumes be emitted from the stove. The customer
should be warned to use a fireguard to BS 8423:2002 (Replaces BS 6539) in the presence of
children, aged and/or infirm persons.
Warning note on fume emission
Properly installed, operated and maintained this appliance will not emit fumes into the dwel-
ling. Occasional fumes from de-ashing and re-fuelling may occur. However, persistent fume
emission is potentially dangerous and must not be tolerated. If fume emission does persist,
the following immediate actions should be taken:-

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a) Open doors and windows to ventilate room.
b) Let the fire out or eject and safely dispose of fuel from the appliance.
c) Check for flue or chimney blockage, and clean if required.
Do not attempt to relight the fire until the cause of the fume emission has been identified and
corrected. If necessary seek expert advice.
Extractor fan
There must not be an extractor fan fitted in the same room as the stove as this can cause the
stove to emit smoke and fumes into the room.
Permanent air vent
The stove requires a permanent and adequate air supply in order for it to operate safely and
efficiently.
In accordance with current Building Regulations the installer may have fitted a permanent air
supply vent into the room in which the stove is installed to provide combustion air. This air
vent should not under any circumstances be shut off or sealed.
Chimney cleaning
The chimney should be swept at least twice a year. It is important that the flue connection
and chimney are swept prior to lighting up after a prolonged shutdown period.
If the stove is fitted in place of an open fire then the chimney will require sweeping after a
month of continuous operation. This is a precaution to ensure that any “softer” deposits left
from the open fire usage have not been loosened by the higher flue temperatures generated
by the closed stove.
Periods of Prolonged Non-Use
If the stove is to be left unused for a prolonged period of time then it should be given
a thorough clean to remove ash and unburned fuel residues. To enable a good flow of air
through the appliance to reduce condensation and subsequent damage, leave the air controls
fully open.
Use of fireguard
When using the stove in situations where children, aged and/or infirm persons are present a
fireguard must be used to prevent accidental contact with the stove. The fireguard should be
manufactured in accordance with BS 8423:2002 (Replaces BS 6539).
Use of operating tools
Always use the operating tools provided when handling parts likely to be hot when the stove
is in use.
Aerosol sprays
Do not use an aerosol spray on or near the stove when it is alight.

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MORSØ JERNSTØBERI A/S . DK-7900 NYKØBING MORS
E-Mail: [email protected] · Website: www.morsoe.com
Morsø Jernstøberi A/S - 15.07.2010 - 72341600