HWAM 7150 User manual

User's Manual EN
01.11.2020 / 97-9672
www.hwam.com
7150
AUTOPILOT

Table of contents
Drawings ....................................................4-7
Installation....................................................8
Firing manual - wood ..........................................11
Firing in general...............................................14
Maintenance .................................................15
Operational problems..........................................17
Declaration of Performance .....................................18
Product information EcoDesign ..................................19

Page 4 of 20 pages
B. C.
A.
3
1
1
4
45˚
4
3
2
1
9
11
10
17
16
14 12
13
5
6
7
8
2
15
14
13
12
11
5

Page 5 of 20 pages
F.
3
1
2
4
5
E.
1

Page 6 of 20 pages
G.
30°
4
4
4
4
4
2
23
1
3
1

Page 7 of 20 pages
H.

Page 8 of 20 pages
InstallatIon
In general
Congratulations on your new HWAM woodburning stove.We are pleased that you have chosen a HWAM
woodburning stove and confident that it will give you much pleasure.To ensure optimum operation and
safety, we recommend that the installation should be carried out by an authorised HWAM retailer or
a fitter 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. 6-23 m3 of air per hour.A window that can be opened or an adjustable
air valve will be sufficient. 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 floor can withstand
the weight of the stove and the chimney. The weight of the chimney should be calculated according to
its dimensions and height.
Technical measures and data
Test results from nominal test EN 13240
Nominal heating effect 4,5 kW
Flue gas temperature EN 13240 measurement point 254ºC
Flue gas temperature measured in the outlet socket 300ºC
Exhaust gas flow 5,1 g/s
Efficiency 78,1%
Annual efficiency (EcoDesign) 68,1 %
PM 22 mg/m3
OGC 85 mg/m3
NOx 130 mg/m3
CO at 13% O2875 mg/m3
CO at 13% O20,07 %
Energy efficiency index 103
Energy efficiency class A
Test result based on NS 3058
Particle emissions 2,05 g/kg
The declaration of performance (DoP) can be downloaded from our website, www.hwam.com.
Modell Gewicht Hohe Breite Tiefe
HWAM 7150c/7150m with soapstone cladding 462/459 kg 151,3 cm 56,0 cm 56,0 cm
Heat storage stones, 50 kg

Page 9 of 20 pages
Floor plate
European, national and local regulations must be observed in terms of the size and thickness of a non-
combustible floor covering the floor in front of the combustion chamber opening. Ask your HWAM
retailer for assistance.The combustion chamber opening is 34.0 cm wide.
Distance to combustible materials
Min. distances - uninsulated flue gas pipe (drawing A) HWAM 7150
1. Recommended for brick wall 5 cm
1. For combustible back wall 5 cm
2. For combustible side wall 31 cm
1.To combustible wall,corner installation, 45º 5 cm
3. Distance to furnishings in front 80 cm
5. Distance to combustible ceiling 38 cm
Remember to pay attention to the applicable regulations concerning the required distance
between the wall and smoke pipe.
The distance to a brick wall is set to faciliate the servicing of the HWAM®Autopilot™.
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 sufficient 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 woodburning stove requires a minimum draught of 12 Pa (measured at EN 13240 measurement
point). If measured just above the smoke flue 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
easily accessible cleaning door.The chimney and flue duct must be of flue class T400 and be CE marked.
Furthermore, it must have obtained the classification of G in soot fire testing.The required distance to
combustible material must be complied with in accordance with the brand label.Ask your HWAM retailer
for further information.
Connection to chimney
All the stoves have both rear 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 flue (Drawing B and C)
B: Top smoke outlet
C: Rear smoke outlet
• Steel chimney (9).
• Flue gas elbow (10).

Page 10 of 20 pages
• Brick-built jamb of flue (11).
• Built-in pipe sleeve (12). Fits smoke flue.
• Wall rosette (13). Covers disruption to wall around pipe sleeve.
• Joint (14). Sealed with gasket.
• Smoke outlets (15) of the HWAM stove.
• Smoke flue regulating damper (16).
• Soot door (17).
Fitting the loose parts
Before the stove is installed,you must ensure that all loose parts are fitted correctly. Check that all insula-
tion plates of the combustion chamber have been properly placed, i.e.that the bottom plate is horizontal
and that the side plates are vertical and reach all the way up to the steel sides of the combustion chamber
and down to the bottom plate.
Vertical cross-section of the stoves (Drawing B):
• The smoke shelf (5).To be placed on top of the steel rail and on the holders in the sides.
• Two-piece smoke defector plate (6).Each half is hung on the hooks located beneath the top plate.The two
halves join in the holders behind the air pipe. Once the stove has been installed, twist the protection off
the two hooks by using pliers or a screwdriver.
• Removable rear plate (2), covering Autopilot controls. This must always be mounted if the stove is
placed next to a combustible wall.
• Loose heat shield (8) under the ash pan.This can be used as a lid when the ash pan is removed for
emptying.This must always be mounted when the stove is burning
Chimney
The 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 for the so-called glass pane rinse which keeps the glass free of soot, and
sucks in air through both primary and secondary dampers for the combustion.
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. It is crucial, therefore,that the chimney is warmed
up properly before closing the damper and limiting the combustion in the stove (a brick chimney takes
longer to warm up than a steel chimney).On days where the weather and wind conditions create insufficient
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 flames going. Split the wood into extra fine pieces, use an extra firelighter, 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 first check the
applicable rules.
Chimney sweeping
To prevent the risk of chimney fires,the chimney must be cleaned every year.The flue duct and the smoke
chamber above the baffle 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 fire, close all dampers and call the firefighters. Before any further use, have the
chimney checked by the chimney sweeper.

Page 11 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 ashpan 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 a maximum of 18%. Stoking a fire with wet wood results in soot,
environmental problems, and a less efficient 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 fire with the following: printed matter, plywood, plastic, rubber, fluid 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 fire indoors for a few
days prior to use.
It is recommended to purchase a wood moisture meter to continuously check that the firewood has the
correct moisture content before using it for firing.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 fire (finely chopped) 25-30 2-5
Chopped wood 25-30 7-9
Special lighting guide for wood-burning stoves with stone cladding
Stones are a natural product that must be allowed to adapt to fluctuations in temperature.We recom-
mend following the procedure below:

Page 12 of 20 pages
1. First stoking
Turn the air control knob (drawing E, 1) clockwise to maximum. Place two pieces
of wood (5-8 cm in diameter) horizontally in the bottom of the combustion com-
partment (corresponding to 1-2 kg). Place 5-8 pieces of kindling randomly on top.
Place two firelighters between the top layer of kindling. Light up the fire-lighters
and close the stove door. If condensation forms on the glass, keep the door ajar
for a little while and close again.When the fire has gone out, open the door and
leave it open while the stove cools to room temperature.
2. Second stoking
Turn the air control knob (drawing E, 1) clockwise to maximum. Place two pieces of wood (5-8 cm in
diameter) horizontally in the bottom of the combustion compartment (corresponding to 1-2 kg). Place
5-8 pieces of kindling randomly on top. Place two firelighters between the top layer of kindling. Light
up the fire-lighters and close the stove door. If condensation forms on the glass, keep the door ajar for
a little while and close again.When there are no more visible yellow flames, and a right ember is there,
you can fire again.The layer of embers is suitable when the pieces of wood begin to disintegrate and the
bottom of the stove is covered by embers.Put at least two pieces of wood into the stove, weighing up to
1 kg each.When all of the wood has caught fire, turn the air control knob (1) to middle position.Allow
the fire to burn and let the stove cool to room temperature before stoking again.
3.Third stoking
Repeat the procedure for the second stoking. Allow the fire to burn and let the stove cool to room
temperature after the fire has gone out.
Restoking:
Follow the general instructions, see the sections “Lighting the stove” and “Stoking”.
Lighting the stove (drawing E)
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 fire in the top layers of kindling. It is important to achieve a high flue gas
temperature quickly.
Turn the air control knob (1) clockwise to maximum. Place two pieces of wood
(5-8 cm in diameter) horizontally in the bottom of the combustion compartment
(corresponding to 1-2 kg). Place 5-8 pieces of kindling randomly on top.Place two
firelighters between the top layer of kindling. Light up the fire-lighters and close
the stove door. If condensation forms on the glass, keep the door ajar for a little
while and close again.
When the kindling is burning well,turn the air control knob (1) to middle position.
If the fire goes out when the air control knob is turned, return it to maximum position again until the
fuel catches fire and then turn it to middle position again.Allow the kindling to burn up completely until
there are no longer any visible flames.The stove can then be stoked again.
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®Autopilot™ 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
flames in the wood after firing!
Stoking (drawing E)
When there are no more visible yellow flames, and a right ember is there, you can fire again.The layer of
embers is suitable when the pieces of wood begin to disintegrate and the bottom of the stove is covered
by embers. Put at least two pieces of wood into the stove, weighing up to 1 kg each. Do not regulate the
stove again as the HWAM®Autopilot™ will do this, but the temperature can be adjusted with the air
control knob (1).Turning it to minimum (counter-clockwise) will reduce the rate of combustion and make

Page 13 of 20 pages
the stove burn slower.Turning to maximum (clockwise) will increase the rate of combustion and make
the stove burn faster.Wait until the layer of embers is suitably low before stoking again.
During combustion, the outer surfaces of the stove will become hot, and due care must
therefore be shown.
When burning is complete
When the stove is not in use, turn the air control knob all the way to the left.
Cleaning the glass
We recommend wiping the glass after a fire.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.

Page 14 of 20 pages
FIrIng In general
Rapid or fierce heat
Rapid or fierce heat is obtained by burning many small pieces of wood.
Maximum amounts of fuel:
The maximum allowed amount of fuel per hour is:
Wood: 2.0 kg
IIf 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..The stove has been
approved for intermittent use.
Typical re-firing interval
Typical re-firing interval at nominal performance
Wood: 54 min (1,3 kg)
Prolonged burning time
The longest burning time is achieved by turning the air control knob counter-clockwise (to the left) when
the flames are about to die.This will ensure the longest period with embers.When adding new firewood,
always remember to check that the wood has caught fire properly. If not, the air supply must be increased
by turning the air control knob to the right.When the air control knob is turned all the way to the left,
no primary air will enter the wood-burning stove through the bottom plate in the combustion chamber.
The stove cannot be lit after a new firing without the air control knob being turned to the right, which
allows primary air to enter the unit.
If the air control knob is turned 45º from its minimum position (i.e. set at 25% capacity), the stove can
restart following a new firing without further adjustment.
Insufficient firing
If the fireproof materials in the combustion chamber are blackened after a fire, then the stove is polluting,
and the HWAM®Autopilot™ is malfunctioning.Therefore, more air must be supplied by turning the air
control knob clockwise (to the right). It may also be necessary to burn more wood.
How to achieve the best combustion
• Use clean and dry wood.
Wet wood results in inefficient combustion, plenty of smoke, and soot. Furthermore, the heat will dry
the wood, not heat up the room.
• The fire should only be stoked with a little wood at a time.
You achieve the best combustion by starting up a fire often and using only a little wood. If you use
too much firewood, it will take some time before the temperature reaches a level where you achieve
a good combustion.
• Make sure there is the right amount of air.
You should also make sure that there is plenty of air – especially in the beginning - so the temperature
in the wood burning stove climbs quickly. In this way the gasses and particles released during the
combustion will be consumed by the fire. Otherwise they build up soot in the chimney (constituting
a chimney fire risk) or will be released in a non-combusted state into the environment. The wrong
amount of air supply creates inefficient combustion and a modest effect.
• Don’t savour the fire during night time
We advise against adding fire wood to your stove and reducing the air supply at night in an attempt to still
have some embers left in the morning. If you do so, large amounts of hazardous smoke will be emitted,and
your chimney will be exposed to unnecessarily large amounts of soot with the risk of a chimney fire.

Page 15 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.
For proper maintenance of the soapstone cladding, see the separate instructions that accompanied the
soapstone set.
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°C), see drawing H. 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.
• Check the spring in the HWAM®Autopilot™ unit and replace if necessary.
• Checking gaskets. Replace gaskets if they are not intact or have softened.
• Checking of heat insulating material and possibly replacement.
• Checking of the bottom/shaking grate.
• Lubricating the hinges and the locking hook with cobber grease (drawing K).
All service checks must be performed by an authorised fitter. Use only original spare parts.
Inside cleaning
Before chimney sweeping can be performed, the air control knob must be set to its minimum position to
prevent soot and ash from entering the HWAM
®
Autopilot™. Unless the safety fittings for transportation
have not already been removed,twist the safety fittings for transportation off the two hooks by using pliers or
a screwdriver.The smoke shelf and baffle plate is to be removed from the stove before cleaning (drawing F).
• First lift the smoke shelf (1) out of the steel rail (2) at the back of the combustion chamber. Next, lower
it beneath the holders (3) and slide it out.
• Lift each half of the steel smoke plate (4) off the holder (5) behind the smoke pipe, and remove them
from the hook (6) beneath the top plate.
Ashes
The ash pan is best emptied by pulling a waste bag over the pan, tipping it and then carefully pulling it out
of 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 fire has
gone out!
Insulation
The efficient,but porous insulation of the combustion chamber may, in time,be worn and damaged.Cracks
in the insulation are irrelevant to the efficiency 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.
HWAM®Autopilot™ (Drawing G)
If the stove has top outlet, lift off the convection grate (1), remove the rear part of the top plate (2)
and replace the convection grate so that it rests on the flue duct and the front part of the top plate. Lift
off the slabs (4) on the rear left-hand side of the stove by first lifting the slabs and then removing them.

Page 16 of 20 pages
Start with the uppermost slab, two slabs in all for HWAM 7150 and three slabs for HWAM 7180. Please
be careful; the stone slabs are quite heavy.
If the stove has rear outlet, lift off the convection grate (1) and both top plates (2 + 3). Lift off the
slabs (4) on the front left-hand side of the stove by first lifting the slabs and then removing them. Start
with the uppermost slab, two slabs in all for HWAM 7150 and three slabs for HWAM 7180. Please be
careful; the stone slabs are quite heavy.
On a cold stove, the starting point of the feeler is controlled.The starting point on a cold stove is about
300 above horizontal. It should feel easy going and bouncy when you push it, no matter if the stove is
cold or hot. By rising or falling temperatures it must not move at a bound.The damper plates must be
dry and clean and slide together unhindered. Control bars and slide gates may have to be smeared with
WD40 (never oil).
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.
Surface
Usually,it is not necessary to any treatment to the painted surfaces of the wood-burning stove.Any damage
to the paint may, however, be remedied with spray paint, which can be bought from your stove retailer.
Guarantee
The guarantee does not cover damage due to insufficient maintenance!

Page 17 of 20 pages
operatIonal problems
Blackened glass
• The wood is too damp. Only use wood stored for at least 12 months under cover and with a
moisture level not exceeding 18% RH.
• Faulty seal in door. Fit new seal.
Smoke in the room when opening door
• The grate in the chimney may be closed. Open the grate.
• Insufficient chimney draft. See section on chimney or contact chimney sweep.
• Soot door leaking or dislodged. Replace or refit.
• Never open the door when there are still flames on the wood.
Uncontrollable combustion
• Faulty seal in door or ash pan. Fit new seal.
• If there is an excessive chimney draft, it may be necessary to set the regulator to its minimum position.
Also do this all when the stove is not in use.
• If the steel plates in the combustion chamber develop scales or become deformed, this is due to
excessive heat. Stop using the stove and contact the dealer.
At interruptions that you cannot yourself rectify, you should contact the dealer.

Page 18 of 20 pages
declaratIon oF perFormance
The DoP can be downloaded from our website via the following links:
www.hwam.com/dop/7150

Page 19 of 20 pages
Model
Direct heat output [kW]
Indirect heating functionality
Indirect heat output [kW]
Type of heat output/room temperature control
Wood logs with moisture content 12-18 % 70,9
Emissions
Particulate matter (PM)
Organic gaseous compounds (OGC)
Carbon monoxide (CO)
Nitrogen oxides (NOₓ)
Energy efficiency index
Energy efficiency class
HWAM 7150
4,5
No
-
Two ore more manual stages, no temperature control
Preferred fuel
Yes
mg/m
3
(13% O
2
)
19
74
750
114
Product information on solid fuel local space heaters
according to Comission regulation (EU) 2015/1185
Nominal heat output [kW]
Electric power consumption nominal heat output [kW]
• Dispose of the items correctly i.e. separate the parts to be disposed of in material groups
4,5
-
-
-
80,9
107
A+
Specific Precautions during Assembling, Installing & Maintenance:
Product End-of-Life/Recycling:
• Always dispose of items in a way that is as sustainable as possible and that is in line with the current
environmental protection, reprocessing/recycling and disposal technology
Space heating performance at nominal heat output
Fuel
Seasonal space heating energy efficiency
[%]
Characteristics when operating with the prefered fuel only
See installation instructions for more information
To dispose of the stove after the product life has expired, please observe the following information
Electric power consumption minimum heat output [kW]
Electric power consumption standby mode [kW]
Useful efficiency at nominal heat output [%]
HWAM A/S • Nydamsvej 53 • DK-8362 Hørning

www.hwam.com