HWAM 4620 User manual

User's Manual EN
01.11.2020 / 97-9685
www.hwam.com
4620 46604640

Table of contents
Drawings ........................................................4-8
HWAM®SmartControlTM ........................................10
Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Firing manual - wood ..............................................16
Firing in general ...................................................19
Maintenance......................................................20
Operational problems .............................................21
Declaration of Performance.........................................22
Product information EcoDesign .....................................23

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B.A.
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E.

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F.
13
15
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G.

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Page 10 of 20 pages
HWAM® SMArtControl™
Congratulations on your new wood-burning stove complete with a HWAM®SmartControlTM
We are pleased that you have chosen a HWAM woodburning stove and condent that it will give you
much pleasure.
The HWAM®SmartControlTM is a digital control of the combustion in your new wood-burning stove.The
purpose of the HWAM®SmartControlTM is to control the combustion in an environmentally optimal and
economically efcient way, with a view to generating greater user comfort.
The HWAM®SmartControlTM is a new patented technology, which electronically adjusts the air supply to
the combustion chamber.Your new wood-burning stove continually measures the temperature and the
oxygen levels of the combustion. Moreover, it is programmed to supply oxygen to the re through three
important air inlets in the right amount, and at the right time and place in the combustion chamber. By
downloading a free app for your smartphone or tablet, you can use the app among other things: to set
the thermostat to the desired room temperature level, choose time for night-time reduction and keep
your stove updated.The app also gives you current information on burning in the stove. See details in
separate manuals for the app IHS Smart ControlTM or in the Quickguide.
.
Your new wood-burning stove and the HWAM®SmartControlTM will ensure the cleanest possible com-
bustion as well as a good fuel economy, regardless of external conditions such as the type of rewood
used, the chimney, the user’s experience, and other external circumstances.
The HWAM®SmartControlTM consists of the following components:
• Air box: the Air box contains a printed circuit board/software, as well as three motors and dampers
that control primary, secondary, and tertiary combustion air.The fresh air system can be mounted
on the Air box to the back or in the bottom.
• Two sensors: a temperature sensor and an oxygen sensor transmit information from the wood-
burning stove to the Air box.
• Room temperature sensor: The room temperature sensor with batteries communicates with the
HWAM®SmartControlTM via a wireless connection. It should be placed so it does not have direct
radiant heat from the stove. Note that the maximum distance between stove and room temperature
indicator is about 4-5 metres.The range is reduced if there are walls or other obstructions between
the stove and the room temperature indicator.
• Electricity supply: from the Air box to the nearest wall socket.
• App "IHS Smart ControlTM:The app can be downloaded free from the App Store or Google Play
Store. See details in separate manuals for the app IHS Smart ControlTM or in the Quickguide.
.

Page 11 of 20 pages
InStAllAtIon
In general
To ensure optimum operation and safety, we recommend that the installation should be carried out by an
authorised HWAM retailer or a tter recommended by the retailer.For an overview of HWAM retailers,
visit www.hwam.com under “Retailer locations”.
Safety
The installation of your HWAM woodburning stove must always comply with all European, national and
local building regulations.The installation must be carried out in accordance with the instructions in the
installation and user manuals and subsequently registered with the local authorities. Upon installation,
the chimney sweep must approve the installation before you can start using the woodburning stove.All
HWAM woodburning stove packaging material must be handled in accordance with local waste manage-
ment regulations.
Room requirements
Always ensure a supply of fresh combustion air to the room where the stove is to be installed. The
woodburning stove uses approx. 7-20 m3 of air per hour.A window that can be opened or an adjustable
air valve will be sufcient. It must not be possible to block the adjustable air valve/grate. In newly built/
airtight dwellings, we recommend that a fresh air system should be installed for the direct supply of
external air to the combustion.This fresh-air system may be bought separately.
Before installing the stove, you must ensure that the load-bearing capacity of the oor can withstand the
weight of the stove and the chimney. The weight of the chimney should be calculated according to its
dimensions and height. Remember to consider that the stove must be connected to power.
Technical measures and data
Test results from nominal test EN 13240
Nominal heating effect 8,0 kW
Flue gas temperature EN 13240 measurement point 278ºC
Flue gas temperature measured in the outlet socket 334ºC
Exhaust gas ow 6,6 g/s
Efciency 81 %
Annual efciency (EcoDesign) 71 %
PM 29 mg/m3
OGC 84 mg/m3
NO2108 mg/m3
CO at 13% O2750 mg/m3
CO at 13% O20,06 %
Energy efciency index 107
Energy efciency class A+
Test result based on NS 3058
Particle emissions 1,88 g/kg
The declaration of performance (DoP) can be downloaded from our website, www.hwam.com.

Page 12 of 20 pages
Model Weight Height Width Depth
HWAM 4620c/4620m 119/117 kg 84.8 cm 63.0 cm 40.6 cm
HWAM 4640c/4640m 133/131 kg 114.3 cm 63.0 cm 40.6 cm
HWAM 4640c/4640m with soapstone cladding 197/195 kg 114.3 cm 63.0 cm 40.6 cm
HWAM 4640c/4640m with natural stone cladding 182/180 kg 114.3 cm 63.0 cm 40.6 cm
HWAM 4660c/4660m 153/151 kg 138.8 cm 63.0 cm 40.6 cm
HWAM 4660c/4660m with soapstone cladding 224/222 kg 138.8 cm 63.0 cm 40.6 cm
HWAM 4660c/4660m with natural stone cladding 209/207 kg 138.8 cm 63.0 cm 40.6 cm
Heat storage stones HWAM 4660 45 kg
Floor plate
European, national and local regulations must be observed in terms of the size and thickness of a non-
combustible oor covering the oor in front of the combustion chamber opening. Ask your HWAM
retailer for assistance.The combustion chamber opening is 45,0 cm wide.
Distance to combustible materials
Min. distances - uninsulated ue gas pipe:
(drawing A)
HWAM 4600
with steel cladding
HWAM 4600
with stone cladding
1. Recommended for brick wall, back 10 cm 10 cm
2. Recommended for brick wall, side 10 cm 10 cm
1. For combustible wall, back 20 cm 20 cm
2. For combustible wall, side 35 cm 45 cm
1.To combustible wall, corner installation 12 cm 15 cm
3. Distance to furnishings in front 130 cm 140 cm
Min. distances - insulated ue gas pipe:
(drawing A)
HWAM 4600
with steel cladding
HWAM 4600
with stone cladding
1. Recommended for brick wall, back 7 cm* 7 cm*
2. Recommended for brick wall, side 7 cm* 7 cm*
1. For combustible wall, back 7 cm* 7 cm*
2. For combustible wall, side 40 cm 45 cm
1.To combustible wall, corner installation 12 cm 15 cm
3. Distance to furnishings in front 130 cm 140 cm
*We recommend 10 cm to facilitate service on the HWAM®SmartControlTM.
Remember to pay attention to applicable regulations concerning the required distance
between the wall and smoke pipe.
Please be aware that not all glass parts are heat-resistant. For this reason, a glass wall should sometimes
be treated as a combustible wall, in which case we ask you to contact your local chimney sweep or glass
producer to hear at what distance the stove should be kept from glass.
Requirements for chimney and smoke pipe
The height of the chimney must ensure sufcient draught and prevent any smoke nuisance.As a general
rule, satisfactory draught conditions are achieved if the chimney is 4 m above the stove and at least 80
cm above the ridge. If the chimney is placed at side walls, the top of the chimney should always be higher
than the ridge or the tallest point of the roof.Always be aware of any national and/or local regulations
applying to thatched roofs and the location of the chimneys.
The stove requires a minimum draught of 12 Pa (measured at EN 13240 measurement point).If measured
just above the smoke ue socket, the chimney draught must be 18-20 Pa.
The chimney must have a minimum clearing of Ø 150 mm. The chimney must be provided with an

Page 13 of 20 pages
easily accessible cleaning door.The chimney and ue duct must be of ue class T400 and be CE marked.
Furthermore, it must have obtained the classication of G in soot re testing.The required distance to
combustible material must be complied with in accordance with the brand label.Ask your HWAM retailer
for further information.
Changing the smoke outlet from top outlet to back outlet (HWAM 4620/4640 IHS) (Drawing F)
1. Lift the top plate (2) off the stove.
2. Remove the rear plate (3) by loosening the two screws (4).The rear plate has a cut-out for the ue
pipe. Cut out the plate (5) within this cut-out.
3. The heat shield has a cut-out for the ue pipe. Cut out the plate (6) within this cut-out.
4. Remove the cover plate (7) on the rear of the stove (behind the cut-out plate in the heat shield) by
removing the three screws (8).
5. Remove the smoke ring (9) above the combustion chamber by removing the three screws (10).
6. Place the smoke ring (9) in front of the ue outlet hole on the rear of the stove and afx using the
three screws (10).
7. Place the cover plate (7) so that it closes the ue outlet on top of the combustion chamber (where
the smoke ring was just removed) and afx using the three screws (8).
8. Place the rear plate (3) on the guide taps (11) on the rear side of the stove's base plate and afx the
rear plate using the two top screws (4).
9. Lie the top plate (2) on the stove.
10. Place the cast-iron or stone top cover (12) in the hole in the top plate.
An accessory top cover is available to cover the hole in the stove top plate if the smoke outlet is con-
nected at the rear of the stove.
Changing the smoke outlet from top outlet to back outlet (HWAM 4660 IHS) (Drawing F)
1. Remove the heat storage compartment front (1) by lifting the front and pulling away from the stove.
2. Lift the top plate (2) off the stove.
3. Remove the rear plate (3) by loosening the two screws (4).The rear plate has a cut-out for the ue
pipe. Cut out the plate (5) within this cut-out.
4. The heat shield has a cut-out for the ue pipe. Cut out the plate (6) within this cut-out.
5. Remove the cover plate (7) on the rear of the stove (behind the cut-out plate in the heat shield) by
removing the three screws (8).
6. Open the metallic tabs (13) and take the wires out.
7. Pull the lambda sensor coupling (14) free of the wire fastener (15).
8. Remove the temperature monitor (16) from the smoke ring (9).
9. Remove the smoke ring (9) above the combustion chamber by removing the three screws (10).
10. Place the smoke ring (9) in front of the ue outlet hole on the rear of the stove and afx using the
three screws (10).
11. Reattach the temperature monitor (16) in the smoke ring, leading the sensor about 3 cm into the
smoke ring.
12. Reposition the lambda sensor coupling (14) in the wire fastener (15).
13. Fix the two wires by closing the metallic tabs (13) again.
14. Place the cover plate (7) so that it closes the ue outlet on top of the combustion chamber (where
the smoke ring was just removed) and afx using the three screws (8).
15. Place the rear plate (3) on the guide taps (11) on the rear side of the stove's base plate and afx the
rear plate using the two top screws (4).
16. Lie the top plate (2) on the stove.
17. Place the cast-iron or stone top cover (12) in the hole in the top plate.
18. Re-attach the front (1) to the heat storage compartment.
An accessory top cover is available to cover the hole in the stove top plate if the smoke outlet is con-
nected at the rear of the stove.

Page 14 of 20 pages
Connection to chimney
All the stoves have both back and top smoke outlet.
that can be connected to an approved steel chimney on top or directly out at the rear to a chimney.
Make sure that the chimney is tight and that no false draft is caused around neither the cover plate, in
connection with a covered smoke outlet, nor the cleanout door and pipe connections. Please note that
bent and/or horizontal smoke pipes will reduce the effect of the chimney draft.
Vertical cross-section of smoke ue (Drawing C)
C1: Top smoke outlet C2: Back outlet
1. Steel chimney.
2. Flue gas elbow. Fits into smoke ue socket.
3. Brick-built jamb of ue.
4. Built-in pipe sleeve. Fits smoke ue.
5. Wall rosette. Covers disruption to wall around pipe sleeve.
6. Joint. Sealed with packing material.
7. Smoke outlets of the HWAM stove.
8. Cover plate in the external rear plate – break off if a rear outlet is required.
9. Cover screwed in position: secure it to the top plate with screws if a back outlet is required.
10. Smoke bushing: to be screwed to the back of the stove if a back outlet is required.
11. Adjusting damper in smoke pipe.
12. Cleaning hatch.
13. Smoke pipe to back outlet.
14. Loose cast iron cover: to be placed on the top plate when there is a back outlet.
Fitting the loose parts
Before the stove is installed, you must ensure that all loose parts are tted correctly. Make sure that
the chimney is tight and that no false draft is caused around neither the cover plate, in connection
with a covered smoke outlet, nor the cleanout door and pipe connections. Please note that bent and/
or horizontal smoke pipes will reduce the effect of the chimney draft.
Vertical cross-section of the stoves (Drawing B)
1. Bottom smoke shelf. Must rest on the steel rail at the back of the combustion chamber.
2. Top smoke shelf. Must rest on the bottom smoke shelf.
3. The steel smoke guide plate is in two parts. Each half hangs on a hook under the top plate and is
equipped with two pins (7) that serve as protection during transportation. Remember to remove
the two pins before you start using the stove.
4. Back outlet. Closed at the factory using a plate afxed with screws.The ue outlet is thus concealed
behind the rear plate.
5. Removable rear plate. Must always be installed if the stove is next to a ammable wall.
6. Loose heat shield under the ash pan.
Connection of the HWAM®SmartControlTM
Before using the stove it must be connected to power. See the instructions in the separate manuals for
the app IHS Smart ControlTM or in the Quickguide in order to connect to stove with the app and the
wireless room temperature sensor.
Chimney
TThe chimney is the “engine” of the stove and it is crucial for the functioning of the woodburning stove.
The chimney draft provides a partial vacuum in the stove. This vacuum removes the smoke from the
stove, sucks air through the dampers in the Air box for the so-called glass pane rinse which keeps the
glass free of soot, and for the combustion.

Page 15 of 20 pages
The chimney draft is created by the differences in temperature inside and outside the chimney.The higher
the temperature within the chimney, the greater the draft (a brick chimney takes longer to warm up than
a steel chimney). On days where the weather and wind conditions create insufcient draught inside the
chimney, it is even more important to warm up the chimney as quickly as possible.The trick is to quickly
get some ames going. Split the wood into extra ne pieces, use an extra relighter, etc.
If the stove has not been used for a longer period, it is important to check that the chimney pipe is not
blocked. It is possible to connect several devices to the same chimney. However, it is important to rst
check the applicable rules.If the stove has not been used for a longer period, it is important to check that
the chimney pipe is not blocked. It is possible to connect several devices to the same chimney. However,
it is important to rst check the applicable rules.
Even a good chimney can function badly if it is not used correctly. Similarly, a bad chimney may function
well if used correctly.
Chimney sweeping
To prevent the risk of chimney res,the chimney must be cleaned every year.The ue duct and the smoke
chamber above the bafe plate must be cleaned together with the chimney. If the chimney is too tall to
be cleaned from above, it must be equipped with a soot door.
In case of a chimney re and overheating, the HWAM®SmartControlTM will enter a security mode and
automatically adjust all dampers in the Air box, effectively quenching the re. Do not open the door for
the burning chamber, since that might cause the re to rekindle. Contact the re brigade. After a re, the
stove should be checked by a chimney sweep before use.

Page 16 of 20 pages
FIrIng MAnuAl - Wood
Your first heating session
The lacquer will be fully hardened after the stove has been used, and the door and the ash pan should be
opened very carefully as there will otherwise be a risk that the gaskets will stick to the lacquer. In addi-
tion the lacquer may initially give off an unpleasant odour, so make sure that the room is well ventilated.
Tips about fuel
Approved fuel types
The wood burning stove is EN approved for combustion of wood only. It is recommended to use dried
chopped wood with a water content of 12-18%. Stoking a re with wet wood results in soot, environ-
mental problems, and a less efcient fuel economy.
Recommended wood types
All types of wood,for instance birch,beech, oak,elm, ash,conifers, and fruit trees can be used as fuel in your
insert.The great difference is not in the fuel value, but in the weight of the wood types per cubic metre.
Beech weighs more per m3of wood than common spruce, for instance.This is why more common spruce
is required, in terms of volume, to obtain an amount of heat similar to that of beech. Heavy types of wood
such as ash, beech, oak and elm are generally not that easy to light up. In addition, they burn more slowly and
give off more embers. Light types of wood such as birch, maple, spruce and pine are more easy to light up.
They burn faster and give off fewer ambers.You may therefore take advantage of the light types of wood for
lighting and use the heavier types of wood to ensure a longer burning time.
Banned fuel types
It is not allowed to stoke a re with the following: printed matter, plywood, plastic, rubber, uid fuels,
and rubbish such as milk cartons, lacquered wood or impregnated wood and fossil fuels.The reason that
you should not apply any of the above is that during combustion they develop substances that are health
hazardous and harmful to the environment.These substances could also damage your wood burning stove
and chimney, rendering the product warranty void.
Storage of wood
A moisture content of 12-18% is achieved by storing recently felled wood outdoors under a lean-to
for at least one year, preferably 2 years. Wood stored indoors has a tendency to become too dry and
combust too quickly. However, it might be advantageous to store fuel for lighting a re indoors for a few
days prior to use.
It is recommended to purchase a wood moisture meter to continuously check that the rewood has the
correct moisture content before using it for ring. Split the wood and measure the moisture content of
the split surfaces.
Recommended dimensions
The dimensions of the fuel are important to good combustion.The dimensions should be as follows:
Fuel type Length in cm Diameter in cm
Wood for kindling a re (nely chopped) 30-45 2-5
Chopped wood 30-45 7-9
Special re lighting guide for stoves with stone cladding
Stone are natural products which need to adjust to temperature changes.We recommend following
the procedure below:

Page 17 of 20 pages
1.The rst stoking
Open the door. Place two pieces of wood (5-8 cm in diameter) horizontally in the
bottom of the combustion compartment (corresponding to 1-1,5 kg). Place 6-10
pieces of kindling randomly on top. Place four relighters between the top layer of
kindling. Light up the re-lighters and close the stove door. Set the temperature
level to level 1.Let the re burn out and do not restoke even if there is a restoking
alarm.When the re has died out completely, the door must be opened and stay
open while the stove cools down to room temperature.
2.The second stoking
Open the door.Place two pieces of wood (5-8 cm in diameter) horizontally in the bottom of the combus-
tion compartment (corresponding to 1-1,5 kg). Place 6-10 pieces of kindling randomly on top. Place four
relighters between the top layer of kindling. Light up the re-lighters and close the stove door. Set the
temperature level to level 2.When there is a restoking alarm, you should restoke. Place 2 pieces of new
rewood (up to 1.2 kg each) with a diameter of approx. 7-9 cm in the combustion chamber. Let the re
burn and let the stove cool down to room temperature before the next lighting.
3.The third stoking
Repeat the second stoking. Set the temperature level to level 3. Let the re burn and allow the stove to
cool down after the re has died out.
Lighting the stove
A successful combustion process requires that the wood is lit in the right way.A cold stove and a cold
chimney challenge the combustion process. Be careful to make a good lighting with suitably dry wood,
using kindling and lighting the re in the top layers of kindling. It is important to achieve a high ue gas
temperature quickly.
Open the door. Place two pieces of wood (5-8 cm in diameter) horizontally in the
bottom of the combustion compartment (corresponding to 1-1.5 kg). Place 6-10
pieces of kindling randomly on top. Place 4 re-lighters in between the top layers
of kindling. Light up the re-lighters and close the stove door. Select the desired
room temperature level.
As soon as the door is opened the HWAM®SmartControlTM is activated. If lighting up does not occur
within 15 minutes, the HWAM®SmartControlTM will automatically go back to standby and the dampers
in the Air box will be closed.
If the smoke temperature does not reach a high enough level after lightning or stoking, the app IHS Smart
ControlTM and the wireless room temperature sensor emit a restoking alarm,even if there is still unburned
wood and ames in the combustion chamber.The restoking alarm is emitted to make you aware that the
re needs more energy. Restoking with small pieces of kindling wood can often provide a more rapid
and sufcient temperature rise.
The HWAM
®
SmartControl
TM
closes all three air dampers in the Air box when the stove is in standby mode.
This prevents hot air from the room to enter the chimney (heat loss). This might on the other hand result in a
very cold chimney when the stove is lit. In certain cases it is necessary to assist the draught in the chimney by
opening the door to the burning chamber 3-5 minutes before lightning the stove. Read more on www.hwam.com
about the function of the chimney.
Important!
The ash pit must not be opened when lighting up. It must always be closed when the stove is in use.
Otherwise the HWAM®SmartControlTM does not function.The door should only be opened when
lighting up, when restoking, and when cleaning the stove. Never leave a stove before there are lasting
ames in the wood after ring!

Page 18 of 20 pages
The Thermostat Function
The HWAM®SmartControlTM will in general have an environmentally friendly combustion and adapt to
the desired room temperature.The thermostat function is designed as a radiator valve.The user enters
a desired heat level, which suits the room in which the stove is installed.When the thermostat is set at
a heat level, the control function will adapt to this temperature.
• If the room temperature is lower than the desired heat level, the HWAM®SmartControlTM increases
the ue gas temperature in order to increase the heat radiation from the stove.
• If the room temperature is higher than the desired heat level, the HWAM®SmartControlTM decreases
the ue gas temperature, thereby giving the layer of embers as long a life as possible before restoking.
This will reduce the heat radiation from the stove and facilitate restoking without having to light up
the re anew. If the room temperature drops below the desired level, the ember phase will be short-
ened, and the HWAM®SmartControlTM will activate a restoking alarm.The HWAM®SmartControlTM
will signal that a restoking is due at the ue gas temperature of 180° C, and at 100° C the HWAM®
SmartControlTM will enter standby mode and all dampers will close.
• Should the room temperature be much lower than the desired heat level, the HWAM®SmartControlTM
increases the ue gas temperature. If a satisfactory increase in temperature does not occur, the control
will activate a restoking alarm, since it expects that more wood is needed to increase the heat level in
the room.
• If the room temperature after a new restoking still does not reach the desired level, the water content
in the rewood may be too high or the draught in the chimney too weak.The HWAM
®
SmartControl
TM
always strives for a sufciently high ue gas temperature to ensure an environmentally friendly combus-
tion.
Stoking
When alarm for restoking sounds the stove is ready for restoking.The alarm for restoking will come via
the room temperature sensor or the acquired remote control.The app IHS Smart ControlTM will also
come with a notication that it is time for restoking if the app is opened. For more information on the
app, see details in separate manuals for the app IHS Smart ControlTM or in the Quickguide.
The amount of wood that is used for restoking should be adjusted based on the current heat demand.
In terms of combustion technique, you should always stoke the stove with at least two pieces of wood
at a time even if you only use a small amount of wood.You can also choose not to restoke. After a while
the stove will then automatically go in stand-by mode.
During combustion, the outer surfaces of the stove will become hot, and due care must
therefore be shown.
Cleaning the glass
We recommend wiping the glass after a re.This is best done using a paper towel.
Fuelling with coal or pet coke
The stove is not approved to use coal or pet coke as a fuel.
Operating the heat compartment damper
There is a damper at the back of the stove between the top plate and the heat compartment that opens
and closes the ow of convection air in the heat compartment.The supply of convection air can be opened
by moving the damper to the left and closed by moving the damper to the right.
To store heat in the heat storage stones in the heat storage compartment as quickly as possible, it is
recommended that the convection vent be kept closed while the re is lit.
With the convection vent closed, the heat storage compartment retains the heat stored in the heat stor-
age stones for the longest possible duration. If the vent is opened, the heat stored in the stones in the
heat storage compartment will be released into the room as quickly as possible.

Page 19 of 20 pages
FIrIng In generAl
Rapid or erce heat
Rapid or erce heat is obtained by burning many small pieces of wood.
Maximum amounts of fuel:
The maximum allowed amount of fuel per hour is:
Wood: 3,1 kg
If these limits are exceeded,the stove will no longer be covered by the factory guarantee, and it may also
become damaged due to excessive heat,the glass may turn white,for example.If the ue gas temperature
exceeds 580oC, the HWAM®SmartControlTM will revert to safety adjustments and automatically turn
down the air valves to avoid overheating.When the temperature is reduced to 450oC, the normal
functions apply again.The stove has been approved for intermittent use.
Typical re-ring interval
Typical re-ring interval at nominal performance
Wood: 45 min (1.8 kg)
Prolonged burning time
You achieve the slowest combustion by setting the desired room temperature at level 0. At this level
the combustion takes place with the lowest possible ue gas temperature and the ember phase will be
drawn out as long as possible.
How to achieve the best combustion
The HWAM®SmartControlTM is purposely designed to generate the cleanest and the most economical
combustion. A good combustion is achieved when the re gets the right amount of oxygen supply at
the right time and place in the combustion chamber.The HWAM®SmartControlTM allows for variations
in external circumstances. Nevertheless, it is important to use clean and dry wood (humidity approx.
12-18%). Read more on www.hwam.com.

Page 20 of 20 pages
MAIntenAnCe
Cleaning
Any maintenance of the stove should only be carried out when it is cold. Daily maintenance is limited to
vacuum cleaning the stove externally, using the soft brush attachment.You can also dust the stove using a
dry, soft cloth or brush. But remember, only when the stove is cold. Do not use water, spirit or any other
kind of cleaner, as this will damage the lacquer.
Once a year, the stove should be thoroughly serviced. The combustion chamber should be cleared of
ashes and soot.
The hinges and the closing hook must be greased with liquid copper fat spray (heat-resistant up to 1100
degrees Celsius), see drawing G. Lift the door approx. ½ cm and spray copper fat onto the hinge leaf.
Service inspection
Your stove should be given a thorough, preventive inspection once every two years.This includes:
• Thorough cleaning of the stove.
• Checking gaskets. Replace gaskets if they are not intact or are no longer soft.
• Checking and/or replacing insulation material.
• Checking the combustion chamber base.
• Use copper grease for hinges and locking hooks (see drawing G).
All service checks must be performed by an authorised tter. Use only original spare parts
Inside cleaning
Unless the safety ttings for transportation (2 split pins) have not already been removed, start by remov-
ing the split pins (drawing B, 7). Remove the top smoke shelf and the two-part steel smoke guide plate
from the stove before cleaning (Drawing E):
• Lift the smoke shelf (1) out of the combustion chamber.
• Unhook each half of the smoke guide plate (2) from the hook (3) under the top plate.
Ashes
It is easiest to empty the ash pan by pulling a plastic bag over it, turning it upside down and then carefully
removing it from the bag. Ashes are disposed of via the domestic waste collection.
Please note that there may be embers in the ashes for up to 24 hours after the re has gone out!
Insulation
The efcient,but porous insulation of the combustion chamber may,in time,be worn and damaged.Cracks
in the insulation are irrelevant to the efciency of the stove. However, it should be replaced, if there are
actual holes due to parts of the lining falling off or when, due to wear and tear, it has been reduced to
less than half its original thickness.
Door/glass
A sooty glass door can easily be cleaned with a piece of moist kitchen roll dipped in ash. Go about it in
vertical movements (up and down). Follow up with a dry piece of kitchen roll.
Seals
Check frequently to ensure that seals in the door and ash pan are intact and not brittle. Failing this, they
should be replaced. Use original seals only.
Guarantee
The guarantee does not cover damage due to insufcient maintenance!