EVA Stampaggi 8KW User manual

INSTRUCTION MANUAL
WOOD STOVES
8KW
12.5KW
EN
8.5KW

CONTENTS
1
01. SAFETY WARNINGS .................................................................................................................................. 2
02. GENERAL SAFETY PRECAUTIONS ........................................................................................................... 3
03. VENT PIPE .................................................................................................................................................. 5
04 CHIMNEY COWL ........................................................................................................................................ 8
05. DRAUGHT .................................................................................................................................................. 9
06. STOVE EFFICIENCY ................................................................................................................................. 10
0 . FUEL .......................................................................................................................................................... 11
08. INSTALLATION INSTRUCTIONS ............................................................................................................ 12
08.1 HERMETIC STOVES .................................................................................................................. 12
08.2 INFORMATION ........................................................................................................................ 12
09. USING THE STOVE .................................................................................................................................. 14
09.1 IGNITION .................................................................................................................................. 14
09.2 COMBUSTION .......................................................................................................................... 15
10. DATA PLATES .......................................................................................................................................... 1
11. CLEANING AND MAINTENANCE .......................................................................................................... 18
11.1 FOREWORD .............................................................................................................................. 18
11.2 DAILY CLEANING ..................................................................................................................... 18
11.3 Manufacturer liability ............................................................................................................ 18
12. TROUBLESHOOTING .............................................................................................................................. 19
13. INSTALLATION AND TESTING CERTIFICATE ....................................................................................... 20
14. YEARLY PROGRAMMED MAINTENANCE ........................................................................................... 22
15. WARRANTY CERTIFICATE ...................................................................................................................... 23

01.
SAFETY
INSTRUCTIONS
2
The stoves are man fact red in compliance with EN 13240 (wood stoves), EN 14785 (pellet stoves) and EN 12815
(cookers and wood-b rning cookers) sing high-q ality, non poll ting material. For best se of yo r stove we
recommend following the instr ctions in this man al.
Caref lly read this man al before se or maintenance.
Eva Stampaggi's intent is to provide as m ch information as possible to ens re safer se and prevent inj ry and
damages to property or parts of the stove itself.
Each stove is s bject to internal testing before shipping so there may be resid es inside.
KEEP THE MANUAL FOR FUTURE REFERENCE
FOR ANY NEED OR CLARIFICATION CONTACT THE
AUTHORIZED DEALER
•Installation and connection m st be carried o t by q alified staff in compliance with local reg lations,
national and E ropean standards (UNI 10683) and with the installation instr ctions contained herein. It m st
also be performed by a thorized staff that is professionally prepared for the type of work to be performed.
•The comb stion of waste, especially of plastic materials, damages the stove and the vent pipe. Moreover, it is
forbidden by the law against the emission of harmf l s bstances.
•Do not se alcohol, petrol or other highly inflammable liq ids to light the fire or poke it d ring operation.
•Do not exceed the amo nt of f el indicated in the man al when loading the stove.
•Do not modify the prod ct.
•Do not se with the door open or the glass broken.
•Do not se to hang la ndry, rest items on or as a ladder, etc.
•Do not install the stove in bedrooms or bathrooms.
Eva Stampaggi S.r.l. declines any liability for any damage to persons or property arising from the
fail re to comply with the points mentioned above and from non-compliant prod ct installation.

02.
GENERAL
SAFETY
PRECAUTIONS
3
•Use the stove only as described in this man al. Any other se not recommended by the man fact rer may
ca se fires or accidents to people.
•This appliance is not a toy. Make s re children are not left nattended and do not se the appliance as a toy.
•This device is not intended for se by persons (incl ding children) with red ced physical or mental
capacity, or witho t specific experience and knowledge, nless s pervised or d ly instr cted on the se of
the appliance by a person responsible for their safety.
•Never block the comb stion air inlets and f me o tlets.
• ATTENTION! DO NOT TOUCH the FIRE DOOR, the GLASS, the HANDLE or the FUME OUTLET DURING
FUNCTIONING if not wearing adequate protective devices since they become extremely hot.
•Keep flammable materials, s ch as f rnit re, c shions, pillows, blankets, paper, clothing, c rtains, etc., at
least 1.5 m away from the stove front and 40 cm from the stove sides and back.
•Do not se the stove in d sty environments or wherever inflammable vapo rs are generated (e.g. a
workshop or a garage).
•The stove being covered by or in direct contact with flammable materials, incl ding c rtains, blankets, etc, d ring
normal operation may res lt in a fire hazard. KEEP THE APPLIANCE AWAY FROM THE MATERIALS MENTIONED
ABOVE.
•The stove is fitted with components that generate arcs and sparks. Do not install the stove in areas posing
a significant fire or explosion hazard d e to a high chemical s bstance concentration or to a high h midity
level.
•Do not se the appliance close to batht bs, showers, basins, sinks or swimming pools.
•Do not install the appliance nderneath an air vent. Do not install the stove o tdoors.
•Do not repair, disassemble or modify the appliance. The appliance is not fitted with components that can be
repaired by sers.
• ATTENTION! This stove only uses wood. DO NOT USE ANY FUEL OTHER THAN WOOD since it would
damage the appliance and cause its malfunctioning.
•Store wood in a cool, dry place. Storing pellets in a damp or too cold place may reduce the stove potential
heat output.
•Clean the firebox at every ignition.
•Open the firebox only pon ref elling or removal of resid es to prevent f mes from escaping.
•Do not se the appliance as waste incinerator or for any other p rpose other than the intended one.
•Do not se liq id f els.
•Do not modify the appliance witho t prior a thorisation.
•Use only original spare parts recommended by the man fact rer.
•The f el is wood with a maxim m length of 250mm for 8kW stoves and 330mm for 12.5kW stoves and with a
maxim m h midity of 8%;
•Make s re that the stove is transported in compliance with safety reg lations. Avoid any improper transfers
or knocks that may damage the ceramics or the str ct re.
•The metal str ct re is coated sing high temperat re paints. When switching on the stove for the first
times, npleasant odo rs may be emitted as the paint starts to harden on the metal parts. This does not
create a hazard. Simply air o t the rooms. After the first heating cycles, the paint will reach its maxim m
adhesion and all its chemical and physical feat res.
• ATTENTION! Being a heating appliance, some parts of the stove can become extremely hot. We
therefore recommend paying special attention d ring operation.

02.
GENERAL
SAFETY
PRECAUTIONS
4
WHEN THE STOVE IS WORKING:
•do not open the door;
•do not to ch the door glass since it becomes extremely hot;
•keep children away from it;
•do not to ch the f me o tlet;
•do not po r any liq id inside the firebox;
•do not perform any maintenance operations if the stove is not cold;
•only q alified technicians are allowed to perform any operation;
•follow all the instr ctions contained herein.

03.
VENT
PIPE
5
The vent pipe is one of the key feat res for g aranteeing the proper f nctioning of the stove. Thanks to the
q ality of the materials, the strength, the d rability, the easy cleaning and maintenance, the best vent pipes are
made of steel, either stainless steel or al minised.
•Use telescopic joint connections to facilitate connection to the steel rigid vent pipe and co nterbalance the
thermal expansion of both the firebox and the vent pipe.
•Seal the vent pipe joint connection with high temperat re silicone sealant (1,000°C). Sho ld the existing fl e
opening not be perfectly perpendic lar to the firebox f me o tlet, se an elbow to connect them.
Inclination m st never exceed 45°, with respect to the vertical axis and there m st be no constrictions.
•Use 10cm thick ins lating sleeves if the pipe vent passes thro gh floors.
•The vent pipe m st be ins lated along its entire length. Thanks to the vent pipe ins lation f me temperat re will
remain high optimising dra ght, preventing condensation and red cing b ild- p of barely ignited particles along
the vent pipe walls. Use proper ins lating materials (glass wool, ceramic fibre, Class A1 non-comb stible
materials).
•The vent pipe m st be weather-proof and as linear as possible.
•Flexible and length-adj stable metal pipes may not be sed.
CONSTRICTION
INCLINATION
LOWER THAN 45°

03.
VENT
PIPE
6
EXISTING VENT PIPE (TRADITIONAL)
EXTERNAL VENT PIPE

03.
VENT
PIPE
TYPES OF VENT PIPES:
Examples of vent pipes:
Steel vent pipe with do ble ins lated chamber in material resistant to 400C. Excellent
efficiency.
Refractory vent pipe with do ble ins lated chamber and external coating in lightweight
concrete. Excellent efficiency.
Traditional clay vent pipe with cavities. Excellent efficiency.
Vent pipes with an internal rectang lar section with a ratio of over 1.5 between the long
side and short side are to be avoided. Mediocre efficiency
INCORRECT INSTALLATION
Exha st pipes m st never be fitted pointing downwards or horizontally so that f mes are discharged directly thro gh
the external wall.

04.
CHIMNEY
COWL
8
A properly installed chimney cowl ens res optim m stove f nctioning. The anti-downdra ght chimney cowl consists of
a n mber of components whose o tlet section s m always do bles the vent pipe section. Make s re the chimney cowl
is at least 150cm above the roof top so that it is f lly exposed to the wind.
Roof pitch α
[°] Horizontal width of reflux zone measured from top A
axis [m]
Minimum height from roof
for discharging exhaust
fumes H min =Z+0.50m
Height of reflux zone Z [m]
15 1,85 1,00 0,50
30 1,50 1,30 0,80
45 1,30 2,00 1,50
60 1,20 2,60 2,10
YES
NO

05.
DRAUGHT
9
F mes heat p d ring comb stion, increasing their vol me. Their density is therefore lower than the one of the
s rro nding colder air.
This difference between the inside and o tside temperat res of the chimney res lts in a negative press re which
increases proportionally to the vent pipe length and the temperat re.
The dra ght m st be stronger than the f me circ lation resistance so that all exha st f mes generated d ring
comb stion inside the stove are drawn pwards thro gh the o tlet and the vent pipe. Many weather conditions affect
the vent pipe f nctioning, s ch as rain, fog, snow, altit de, and wind being the most important since it can create both
negative press re and dynamic loading.
The wind action varies depending on whether it is ascending, descending or horizontal.
•Ascending wind always res lts in an increased negative press re and dra ght.
•Horizontal wind res lts in an increased negative press re as long as the chimney cowl was properly
installed.
•Descending wind always diminishes the negative press re, sometimes inverting it.
Excess dra ght ca ses an increase in the comb stion temperat re and conseq ently a loss in stove efficiency.
A part of the comb stion f mes are drawn p thro gh the vent pipe together with small f el particles before
comb stion red cing stove efficiency, increasing f el cons mption and res lting in the emission of poll ting f mes.
At the same time the high f el temperat re, d e to an excess amo nt of oxygen, wears down the comb stion
chamber sooner than expected.
On the other hand, poor dra ght slows down comb stion res lting in a decrease in the stove temperat re, f me
spillage inside the room, a loss of stove efficiency and dangero s b ild- p in the vent pipe.
To avoid an excessive dra ght it is best to se:
-damper -dra ght reg lator

06.
STOVE
EFFICIENCY
10
Highly efficient stoves may pose diffic lties for f me extraction.
In order for a vent pipe to work properly its internal temperat re m st increase as a conseq ence of the f mes
generated d ring comb stion.
Now, a stove's efficiency is determined by its ability to transfer the majority of the heat it prod ces to the area to be
heated: as a conseq ence the more efficient the stove, the colder the comb stion exha st f mes, res lting in a
red ced dra ght.
A traditional chimney fl e, with a ro gh design and ins lation, is more efficient if sed with a traditional open
fireplace or a poor q ality stove where most of the heat is lost with the f mes.
Therefore, p rchasing a q ality stove often entails modifying the existing chimney fl e to obtain a better ins lation,
even when it already works properly with old appliances. Poor dra ght res lts in the stove not operating when hot or
in smoke spillage.
Connecting the stove pipe to an existing chimney fl e that has already been sed with an old appliance is a common
mistake. In this way two solid-f el appliances share the same chimney fl e, which is wrong and dangero s.
If the two appliances are sed sim ltaneo sly, the f me load might exceed the existing chimney fl e capacity res lting in
downdra ght. If only one stove is sed, the f me heat will facilitate dra ght b t the cold air coming from the other
appliance not in se will cool down exha st f me temperat re again blocking the dra ght.
Besides the problems described so far, if the two appliances are placed on different levels the comm nicating vessel
principle might be interfered with, ca sing comb stion f mes to be drawn in an irreg lar and nforeseeable way.

07.
FUEL
11
For a good yield, the wood m st be dry beca se it prod ces less f mes, less soot and less carbon monoxide. Dry wood
will g ide yo in making a correct choice and will let yo get the most o t of yo r stove. Always remember to split the
wood so that it loses h midity. The higher the water contact, the more heat is needed to ignite it and there is less heat
for yo .
Based on the weight in kg of a c bic metre of material, wood can be classified as "soft wood" and "hard wood".
"Soft wood" (300-350 kg/m3 e.g., fir, pine, poplar, alder, chestn t, and willow) b rns q ickly prod cing more heat and
so is great for starting a fire b t when sed as f el the stove needs to be replenished more often. "Soft wood" also
prod ces more creosote, which means the fl e needs to be cleaned more often.
"Hard wood", on the other hand, (350-400 kg/m3, e.g., elm, holm oak, beech, and ash) b rns slower so it prod ces
longer-lasting heat. This characteristic is preferred for home heating.
For heating p rposes, woods can be classified as follows:
• Excellent q ality: oak, ash, beech, maple.
• Average q ality: chestn t, birch and alder.
• Acceptable q ality: lime, poplar and willow.
CALORIFIC VALUE:
The calorific val e val e of wood is dependent pon the density d e to the type of wood and its dryness. Boiler and
stove power is directly infl enced by these variables. Based on the h midity, this can be:
humidity % Calorific value kcal/kg
15% 3490
20% 3250
25% 3010
30% 2780
35% 2450
40% 2300
On average, for aged wood, the calorific val e is 3200 kcal/kg.

08.
INSTALLATION
INSTRUCTIONS
12
08.1 HERMETIC WOOD STOVE
The hermetic wood stove is available in 8 and 12.5 kW. If properly connected via a s ction pipe, making s re oxygen
from the environment is not sed, these stoves draw the comb stion and glass cleaning air directly from the o tside,
not from the room where they are installed. Using air coaxial pipes, the air will be pre-heated, leading to better
comb stion and less emissions. They are ideal for passive homes, ens ring greater comfort at low cost.
08.2 INFORMATION
Follow the instr ctions below before installing yo r stove.
Select the position where the stove is to be installed and:
•Choose whether the appliance will have a rear or top f me exha st.
•Arrange the connection to the vent pipe for f me extraction
•Prepare the external air intake (comb stion air) and check its presence. Make s re that the stove can draw
the necessary q antity of comb stion air from an open space (i.e. a space witho t exha st blowers or
providing adeq ate ventilation) or directly from o tside.
•Place the stove on the floor in a convenient position for the connection to the vent pipe and close to the
comb stion air intake.
•The appliance m st be installed on a floor with an adeq ate loading-bearing capacity. Sho ld the existing floor not
comply with the req irement above, proper meas res m st be taken (for instance, the installation of a load
distrib tion plate).
•All the str ct res which can catch fire if exposed to excessive heat m st be protected. Floors made from wood or
inflammable materials m st be protected sing non-comb stible materials (e.g. 4mm-thick sheet metal or
ceramic glass).
•The appliance installation m st ens re easy access for cleaning the stove, exha st pipes and vent pipe.
•This appliance is not s itable to be installed on a shared vent pipe.
•D ring normal operation, the stove draws air from the room where it is installed. Therefore, an external air
intake m st be positioned at the same height of the pipe located on the stove back. When working the stove
may create a negative press re inside the room where it is installed. Therefore there sho ld not be any other
open flame appliances in the same room.
•The comb stion air intake (Ø 80mm) m st be connected directly to the o tside
or to adjacent rooms provided they are fitted with external air s pply vents (Ø
80mm) and are not sed as bedrooms or bathrooms or, whenever a fire hazard
exists, as storage rooms, garages, comb stible material wareho ses, etc. The air
vents m st be placed in s ch a way that they cannot be clogged either from the
o tside or inside and m st be protected sing a grille, a metal mesh or other
s itable means provided they do not red ce the minim m section. For the
connection to the external o tlet the pre-c ts in the lower part of the back of the
stove m st be broken and the t bes connected to the o tlet with a special gasket.
•If the stove is to be installed in rooms where it is s rro nded by comb stible materials (e.g. f rnit re, wood
cladding, etc.), the following minim m clearances m st be complied with:
“See stove data plate”.
•The 8.5 kw stove does not require connection to the combustion air intake.
•Besides complying with the minim m clearances set above, we also recommend installing heat-resistant
fireproof ins lating panels (rock wool, cell lar concrete, etc.).
We recommend sing the following model:
Promasil 1000
Classification temperat re: 1000 °C
Density: 245 kg/m3
Shrinkage at reference temperat re, 12 h: 1000°C / 1.3%
Cold compression resistance: 1.4 MPa
Flexion resistance: 0.5 MPa
Thermal expansion coefficient: 5.4x10-6 m/mK
Specific heat: 1.03 Kj/kgK
Thermal cond ctivity λ:
200°C  0.07 W/mK
400°C  0.10 W/mK
600°C  0.14 W/mK
800°C  0.17 W/mK
Thickness: 40 mm

08.
INSTALLATION
INSTRUCTIONS
13
Unpack the stove: be caref l not to damage the prod ct when npacking.
Check the feet on the stove and adj st them so the stove is stable.
Position the stove so that the door and any hatches are not against the walls.
After connecting the stove to the comb stion air intake, connect the co pling to
the vent pipe.
ATTENTION: 8 kW and 12.5 kW stoves m st be installed with a minim m of 1
metre of Ø150 pipe certified according to EN 1856-2.
Exha st f me pipes m st be s itable for wood stoves and therefore made from
coated steel or stainless steel, with a diameter of 150 mm and fitted with
adeq ate gaskets.
8.5 kW stoves have a f me exha st diameter of 120 mm. Follow the previo s instr ctions.
STOVE CHARACTERISTICS FOR VENT PIPE SIZING
8 kW stoves have the following characteristics:
Fl e dra ght: 12 Pa
F me temperat re: 212°C
Contin o s f me flow: 6.1 g/s
8.5 kW stoves have the following characteristics:
Fl e dra ght: 10 Pa
F me temperat re: 357°C
Contin o s f me flow: 5.49 g/s
12.5 kW stoves have the following characteristics:
Fl e dra ght: 12 Pa
F me temperat re: 274°C
Contin o s f me flow: 8.1 g/s

09.
USING
THE
STOVE
14
09.1 IGNITION
Stove ignition req ires small wood logs (dry) and fire starter, possibly eco-friendly. Open the primary and secondary
air registers sing the levers and set the logs as shown in the photo. After setting the logs, place the fire starter below
the wood and light it. Close the door and wait ntil the all of the logs start b rning then close the primary air register.
Good ignition depends on the vent pipe dra ght. If ignition is diffic lt, the vent pipe, being cold, will not have the
recommended dra ght and more time will be needed for the stove to heat p. In this case, we recommend opening
the ash pan or keeping the fire door slightly open.
ATTENTION:
Never se flammable liq ids to light the logs. Also, after igniting the stove, remember to close the primary air register.
Fail re to close this register co ld lead to the stove overheating and co ld ca se its parts to break. The paint may still
be fresh and this co ld lead to intense odo rs. Therefore, on first ignition, we s ggest that the room is well-aired.
Open doors and windows to get air flow in the room and remove odo rs.
The prod ct may also ndergo slight deformations since the str ct re is made of steel and yo may hear slight noises
or cracking. This is absol tely normal and sho ld not be considered a defect

09.
USING
THE
STOVE
15
09.2 COMBUSTION
For best comb stion, follow these parameters:
8 kW stoves 8.5 kW stoves 12.5 kW stoves
Wood q antity (kg/h) 1,9 2 2,9
Primary air register Closed ½ open Closed
Secondary air register Almost open (80%) / Open
Reloading interval (min) 45 45 45
Wood length (cm) 25 25 33
Dra ght (Pa) 12 10 12
Once the prod ct is ignited and hot, comb stion can be reg lated sing the secondary air register on the pper part of
the stove. The right knob works like a lever. T rning it clockwise closes the comb stion air and t rning it co nter
clockwise opens it.
For 8.5 kW stoves, comb stion cannot be reg lated with the secondary air register beca se it does not have one. The
only way to reg late it is to se the primary air register on the firebox door.
When reloading wood, it is best to open the secondary (NOT PRIMARY) air register. Open the door slightly so the stove
gets oxygen, load the wood and close the firebox door. It is also recommended that the fire is not b rning strongly at
the time of reloading since, depending pon the fl e efficiency f mes co ld leak into the room from the fire.
Therefore we recommend loading when there are only hot coals.

09.
USING
THE
STOVE
16
ATTENTION:
• Do not exceed the amo nt of f el indicated in the man al when loading the stove.
• Do not s ffocate the fire by closing the air intakes in the chamber.
• Do not leave the primary register open (in 8 kW and 12 kW stoves) d ring normal operation, th s avoiding
overheating and deformation of the appliance or other parts s ch as the glass.
• Do not leave the firebox door open.
• Use proper protections when loading wood. The firebox door handle or the registers can be very hot d ring
operation.
• If the coals have gone o t, they sho ld be relit with new wood kindling so the fire starts. If this does not
occ r, gases co ld form in the comb stion chamber, which co ld ca se an explosion in extreme cases.
• It is yo r responsibility to seek the proper flame and air q antity (by adj sting the registers) so that yo r
stove operates properly based on yo r fl e and wood characteristics.
• The firebox chamber is made of a material called vermic lite. While it is resistant, we recommend not
throwing the wood on it while reloading. Breakage d e to improper ser behavio r while loading wood is not
covered nder the warranty.
• As time passes, small cracks co ld occ r in the vermic lite. This is absol tely normal and does not impact
proper stove operation.
Embers R ined glass

10.
DATA
PLATES
1

11.
CLEANING
AND
MAINTENANCE
18
11.1 FOREWORD
The stove req ires a simple yet constant cleaning to g arantee top efficiency and proper f nctioning.
Constant maintenance by a q alified technician is recommended.
The stove sho ld be cleaned before the cold season beca se it can sometimes get clogged d ring the s mmer (by
nests for example) preventing exha st f mes to flow reg larly.
At the beginning of the season and in case of wind, a b ild- p of resid e in the pipe may lead to fires. Sho ld this
happen, find below a few pieces of advice to follow:
•Block air supply to the pipe immediately;
•Throw sand or kitchen salt, and not water, to extinguish fire and coals;
•Keep objects and furniture away from the burning pipe.
THE YEARLY CLEANING OF THE VENT PIPE IS THEREFORE FUNDAMENTAL TO PREVENT THIS FROM HAPPENING BY
REMOVING INCRUSTATIONS AND ANY OBSTRUCTIONS.
11.2 DAILY CLEANING
Any cleaning operation m st be performed when the stove is completely cold.
•Empty the ash pan: vac ming it or throwing the ashes in the trash bin.
•Vac m the comb stion chamber. Make s re there are no hot coals. If so, yo r ash vac m co ld be set on
fire.
•Remove the ash inside firebox and on the door.
•Clean the glass with a damp cloth or a ball of newspaper that has been wet and dipped in the ash. If the stove
is hot, this co ld ca se the glass to explode.
ATTENTION : ONLY USE A DRY CLOTH TO CLEAN THE STOVE EXTERNALLY DO NOT USE ABRASIVE MATERIALS OR
PRODUCTS THAT COULD CORRODE OR WHITEN THE SURFACE.
11.3 MANUFACTURER LIABILITY
The manufacturer shall not be held liable against any direct and/or indirect, criminal and/or third party liability
arising from:
•fail re to abide by the instr ctions contained herein.
•na thorised repairs or changes.
•se not compliant with safety r les.
•installation not compliant with c rrent national reg lations and safety r les.
•lack of maintenance.
• se of non original spare parts or spare parts not s itable for the stove model.

12.
TROUBLESHOOTING
19
•The stove does not heat: damp or low q ality wood, ins fficient fl e dra ght.
•Stove heats too m ch: excessive fl e dra ght, replacement of door or pan gaskets.
•Lower grille blocked: inspect the grille and make s re there are no nails or wood trapped in it.
•Black glass: damp or low q ality wood, low dra ght, ins fficient comb stion air, register closed too early.