ATTACK FD20 User manual

www.attack.sk
FD SOLID FIRE
Instructions for use
EN
EN 06/2019

2
CONTENTS
CONTENTS ......................................................................................................................................................................2 
INTRODUCTION.............................................................................................................................................................3 
IMPORTANT WARNINGS.............................................................................................................................................3 
1  USE AND PREFERENCES OF THE BOILER .....................................................................................................4 
2  TECHNICAL PARAMETERS OF ATTACK FD SOLID FIRE ...........................................................................5 
3  DIMENSIONS OF BOILERS ATTACK FD SOLID FIRE...................................................................................6 
4  HEAD LOSSES.......................................................................................................................................................6 
5  DESCRIPTION........................................................................................................................................................7 
5.1  HOW TO CHOOSE THE RIGHT SIZE OF A BOILER ..............................................................................7 
6  LOCATION AND INSTALLATION OF THE BOILER ATTACK FD SOLID FIRE ........................................8 
6.1  BOILER LOCATION ACCORDING TO FIRE SAFETY REGULATIONS...............................................9 
7  SUPPLY AND PACKAGING............................................................................................................................. 10 
8  APPLIANCE FOR EXCESSIVE HEAT REMOVAL – COOLING CIRCUIT................................................. 11 
9  BOILER ATTACK FD SOLID FIRE USED IN SYSTEM OF OPEN AIR EXHAUSTION AND NATURAL
WATER FLOW......................................................................................................................................................... 11 
9.1  DIMENSIONS OF COOLING CIRCUIT ..................................................................................................12 
10  BOILER ASSEMBLY ...........................................................................................................................................12 
11  ACCESORRIES ASSEMBLY..............................................................................................................................12 
11.1  CASING ASSEMBLY..................................................................................................................................13 
11.2  ASSEMBLY OF THE CONTROL ROD OF CHIMNEY FLAP............................................................... 13 
12  DRAUGHT REGULATOR..................................................................................................................................14 
13  PUTTING THE BOILER INTO OPERATION – INSTRUCTIONS FOR A SERVICE ORGANIZATION .14 
14  ATTENDANCE OF THE BOILER BY A USER................................................................................................15 
15  MAINTENANCE..................................................................................................................................................17 
16  INSTRUCTIONS FOR PRODUCT LIQUIDATION AFTER ITS SERVICE LIFE ....................................... 18 
17  WARRANTY AND RESPONSIBILITY FOR DEFECTS..................................................................................18 
18  REPAIRS............................................................................................................................................................... 19 
19  KIT FOR 3 CLASS ASSEMBLY.........................................................................................................................20 
19.1  ASSEMBLY PROCEDURE......................................................................................................................... 26 
20  APPENDIXES ...................................................................................................................................................... 27 
20.1  APPENDIX NO. 2 ....................................................................................................................................... 27 
20.2  APPENDIX NO. 3 ....................................................................................................................................... 28 
20.3  APPENDIX NO 3. ....................................................................................................................................... 29 
20.4  APPENDIX NO. 5. ...................................................................................................................................... 30 
20.5  APPENDIX NO. 6. ...................................................................................................................................... 31 
20.6  APPENDIX NO. 7. ...................................................................................................................................... 31 
20.7  APPENDIX NO. 8. ...................................................................................................................................... 32 
20.8  APPENDIX NO.9. ....................................................................................................................................... 32 
20.9  APPENDIX NO.10...................................................................................................................................... 33 

3
INTRODUCTION
Dear customer,
Thank you for your trust and purchase of universal boiler ATTACK FD SOLID FIRE .
Boiler ATTACK FD SOLID FIRE is certified for burning wood and black coal.
For right operation of your new product read at first instruction for use. Please follow the information
below to ensure long-term trouble-free boiler operation to your and also our satisfaction.
IMPORTANT WARNINGS
•You learn important information about construction, use and safe operation of the boiler by
proper study of the instruction of use.
•After the boiler’s unpacking check if the delivery is complete
•Check if the boiler is the required type
•Installation must be performed by the technician with valid authorization to do so
•Start-up and putting the boiler in operation as well as mandatory service inspections can be
performed only by a serviceman with a valid manufacturer’s contract
•Putting the boiler in operation must comply with the valid regulations, standards, operating
instructions or amendment to the instructions
•The manufacturer is not responsible for damages caused by incorrect putting the boiler in
operation
•In case of damage contact your serviceman, unprofessional intervention may damage the
boiler
•For correct operation, safety and log-term operation ensure the regular inspection and
maintenance at least once a year by the service organization of the company you bought the
boiler from
•Only originals spare parts can be used for repair work.
•If the boiler has not been working for a long time (switched-off, out of service) it is necces-
sary to take extra care during the next putting in operation
WARNING: The manufacturer reserves the right to make design changes to the
boiler and changes in this document.
The boiler ATTACK FD SOLID FIRE is cast-iron, low-pressure boiler with elements intended for
burning solid fuel – coal and wood. Burning other types of materials e.g. plastic material is for-
bidden!

4
1USE AND PREFERENCES OF THE BOILER
Four-element size of ATTACK FD is suitable for reconstructions of heat sources in dwellings, for
smaller flats and recreation facilities. Bigger size of the boiler suits to requirements for heating in
family houses, shops, schools and similar. The boiler is produced as a hot-water boiler with natu-
ral as well as forced heating water passage and working overpressure up to 4 bar. Before delivery
it is tested for tightness by a testing overpressure of 8 bar.
Boiler preferences:
•Modern design
•High lifetime of cast iron heat exchanger, with extra low-temperature corrosion re-
sistance
•High efficiency up to 85%
•Wide output range depending on number of elements
•High reliability of regulating and safety components
•Simple attendance and maintenance
•Simple assembly of casing during the boiler assembly in the boiler room
•Low demand on chimney draught
•Good position of the output regulator
•Enlarged combustion chamber for big wood pieces loading
•Sophisticated production technology with a stable and verified quality of production
process( ISO 9001)

5
2TECHNICAL PARAMETERS OF ATTACK FD SOLID FIRE
Boiler type Unit
FD20
FD26 FD32 FD36 FD42
Number of elements pcs 3 4 5 6 7
Nominal output – black coal* kW 23 34 45 56 67
Nominal output – wood** kW 12 19 26 32 38
Fuel consumption at nominal output –
black coal*
ŬŐŚ ϯϵϰ ϱϳϭ ϳϲϮ ϵϮϱ ϭϭϭϮ
Volume of combustion chamber – black
coal* dm
3
43 66 90 114 138
Volume of combustion chamber with using
of kit for the fuel wood – 3 class according
to STN EN 303-5:2012
dm3 37,5 58,3 79,2 100 121
Boiler water volume l 30 39 48 57 66
Max. working pressure bar 4
Weight kg
226
288 350 412 474
Height mm 1 023
Width mm 500
Depth L mm 425 575 725 875 1075
Lenght of combustion chamber mm 260 410 560 710 860
Dimensions of door (width × height) mm 347 × 392
Width of combustion chamber mm 347
Heating water connection Js G 2“
Connection of cooling loop Js
G ½“ inner thread
* Class 1 according to STN EN 303-5:2012. For black coal, the boiler is only for markets outside
the EU.
**For wood fuel using the expansion kit (FSK001-FSK005), the boiler meets class 3 according to
STN EN 303-5:2012 and in this version it is for markets in EU.

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3DIMENSIONS OF BOILERS ATTACK FD SOLID FIRE
4HEAD LOSSES

M - C.H. passage 2’’
R - C.H. return 2’’
S - Boiler drain ½’’

7
5DESCRIPTION
Boiler construction
The main part of the boiler is a cast-iron - element boiler body produced of grey cast iron ac-
cording to STN EN 1561
- middle elements – quality 150
- front and rear elements – quality 200
Pressure parts of the boiler suit to the requirements for tightness by standards:
STN EN 303-5:2000 Boilers for Central Heating, Part 5: Boiler for central heating for solid fuel with
manual or automatic delivery with nominal output up to 300 kW terminology, requirements,
testing and marking.
The boiler body is composed of elements with the help of pressed nipples of 56 mm diameter,
ensured by anchor bolts. The elements create combustion and ash collection space, water space
and convection part. Inlet and outlet of heating water is situated in the rear part of the boiler.
The whole boiler body is insulated by a mineral insulation not harmful for health that eliminates
losses caused by heat emission into surroundings. Steel casing is painted by a paint of a good
quality.
5.1 HOW TO CHOOSE THE RIGHT SIZE OF A BOILER
The right size of a boiler, i.e. of heat output, is a very important condition for economic opera-
tion and right work of the boiler. A boiler has to be chosen in order for its nominal output to
respond to losses of a heated object.When you choose a boiler with a too high nominal out-
put, it can cause higher tarring and dew of the boiler

8
6LOCATION AND INSTALLATION OF THE BOILER ATTACK
FD SOLID FIRE
Rules and standards
Boilers for solid fuels can be installed only by a company with a valid certificate for installation
and maintenance. Installation must be procceded according to valid standards. Before the instal-
lation of the boiler to an older system of heating the whole system must be cleaned by the com-
pany. The heating system must be filled with watersuitable to the requirements by STN 07
7401:1991 a and its hardness must not exceed required parameters.
Recommended values
Parameter Unit Value
Hardness mmol/l 1
Ca
2+
mmol/l 0,3
Concentration of total Fe +
Mn mg/l (0,3)*
*) recommended value
a) for heating system
STN EN 12828+A1 Heating systems in buildings. Design for water-based heating systems
STN 06 0830 : 1998 Safety devices for central heating and heating of service water
STN 07 7401 : 1992 Water and steam for hot water and steam boilers with nominal steam
pressure of up to 8 Mpa
STN EN 303-5: 2012 Heating boilers. Part 5: Heating boilers for solid fuels, manually and
automatically stoked, nominal heat output of up to 500 kW. Terminol-
ogy, requirements, testing and marking
b) for chimney
STN 73 4201: 2012 Design of chimneys and flue gas ducting
c) according to fire regulations
STN 73 0823: 1984 Fire resistance properties of materials. Flammability degree of building
materials
Notice 95/2004 laying down technical conditions, fire safety requirements for the in-
stallation and operation of fuel appliances, electrothermal appliances
and central heating equipment and for the construction and use of
chimneys and flue gas ducts
Possibilities of location
The boiler ATTACK FS is certified for installation in non-residential spaces (cellar, halls, etc.) ac-
cording to Notice 84/1997m) appendix, no. 2, 3, 4, 5, 6, 7, 8, 9, 10 – these appendixes are the part
of this document.

9
6.1 BOILER LOCATION ACCORDING TO FIRE SAFETY REGULATIONS
1. Location on a floor of an incombustible material
•Put the boiler on an incombustible pad exceeding dimensions of the lateral sides of the
boiler in 20 mm and only for the lenght of combustion chamber
•If the boiler is located in a cellar, we recommend to set it up on an elevated step of the min-
imum height of 50 mm
•The boiler is located into the middle of the stand
2. Safe distance from combustibles
During the installation as well as during the operation of the boil-
er it is necessary to keep the safe distance from combustibles. For
easy combustible substances of combustibility level C that burn
quickly and go on burning even after removing the source (e.g.
paper, cardboard, asphalt cardboard, tar paper, wood and wood-
fibre boards, palstics, floor coverings), the safe distance is dou-
bled. It is also necessary to double the safe distance in the case
when the combustibility level is not known.
Location of the boiler to keep necessary manipulation space:
•Basic space AA5/AB5 podľa STN 33 2000-1:2009-04
•In front of the boiler there must be manipulation space of min. 800 mm
•minimum distance between the rear part of the boiler and the wall must be 800 mm
•at least form one lateral side keep space for approach to the rear part of the boiler - min. 800
mm
Location of fuel:
•to put fuels behind the boiler or keep them near the boiler in the distance shorter than 800
mm is not allowed
•to put fuels between two boilers in a boiler room is not allowed
•it is recommended by the manufacturer to keep the distance of min. 800 mm between the
boiler and fuels or to locate fuels in a room other than where the boiler is installed
Requirements for the boiler room
Before installation it is needed to check that the room has the requirements in accordance to the
rules. Furthermore, the room should be aired in order to have a regular combustion. Therefore it
is necessary to do some openings in the wallls of the room which must meet the following re-
quirements:
They should have a free section of at least 6 cm
2
for each 1,163 kW (1000 kcal/h).
•The minimum opening section shouldn t be smaller than 100 cm
2
.
The section can also be calculated using the following formula:
- where "S" is expressed in cm
2
- "Q" is expressed in kcal/h

10
The opening should be situated in the lower part of an outer wall, preferably opposite the com-
bustion gas discharge.
Flue connection
A flue should correspond to the following parameters:
•it should be from waterproof materials resistant to the temperature of smokes and conden-
sations,
•it should have sufficient mechanical resistance and a weak thermal conductivity,
•it should be hermetic in order to avoid cooling of the flue,
•it should be vertical and the terminal part should have a static aspirator which ensures an
efficient and constant discharge of the combustion product
•In order to avoid the air streams and a high pressure around the chimney pot to prevent the
upward force of the combustion gas, it is necessary the discharge opening needs to hang
above at least 0.4 m of any adjacent structure. (including the roof ridge) and the height of
the chimney itself was at least 8 meters
•The flue shouldn ғt have a diameter inferior to the boiler connection.For flues with square or
rectangular sections, the internal section should be higher than 10% compared to the boil-
er connection section.
The net section of the flue can be obtained from the following:
S – section in cm
2
K – reduction coefficient (0,045 for wood, 0,030 for coal)
P – boiler’s output in kcal/h
H – height of the chimney in meters measured from the flame axis at the
exhaust of the chimney in the atmosphere. For the dimensioning of the
flue you should consider the effective height of the chimney in meters
measured from the flame axis to the top, diminished in:
•0,5 m for each direction changing of the connection tube between
boiler and flue,
•1 m for each horizontal meter of the connection itself.
7SUPPLY AND PACKAGING
Supply of the boiler consists of:
•cast iron body
•on the cast iron body there is a set of fire sticks and a bag with the documentation (instruc-
tion of use, the list of service companies, production label)
•inside the cast iron body there is an ash collector and 2 bags:
•The 1st bag includes: a screw with a bakelite end for manually adjusting the air con-
trol door, a contact spring and an M6 lever that will be attached to the draft control
door.
•The 2.bag contains:a thermomanometer, thermostatic draught regulator, 2 flanges
for the boiler, 2 flange packings, 8 screws with hexagonal head, 8 fan-shaped wash-
ers, return valve
•Boiler casing (sidewall right and left, top cover, front panel with the logo of the manufactur-
er, rear cover, protective bar and 3 selftapping screws) in a cardboard box.

11
8APPLIANCE FOR EXCESSIVE HEAT REMOVAL – COOLING
CIRCUIT
WARNING: For admitting claim there must be used a cooling circle and thermoregulation
circle with ATTACK FD SOLID FIRE boiler used in closed ventilation system.
A cooling circuit serves to excessive heat removal so that the highest water temperature 110°C
in the boiler was not overreached. The cooling circuit is connected to the boiler flanges. In case
the pump stops working, discharge water is cooled by the cooling circuit, as overheating could
cause opening the thermoregulating valve by 95°C. Return water is carried with the help of an
interconnection between cooling circuit and the flange of return water.
9BOILER ATTACK FD SOLID FIRE USED IN SYSTEM OF OPEN
AIR EXHAUSTION AND NATURAL WATER FLOW
In the system of open air exhaustion and natural water flow it is not necessary to use a cooling
circuit with a thermoregulation valve.
WARNING: Follow the rules against water pollution!
Outlet of heating water to the system
Thermoregulation valve STS20
Inlet of cooling wate
r
Inlet of return water to the boiler fromthe system
Inlet of return water from cooling circui
t
Outlet of cooling wate
r
Thermoregulation valve STS20
Min. temperature –10 °C
Set-up temperature
(initial opening) 97 °C
Max. flow temperature 110 °C
Max. operation pressure 10 bar
Max. flow 6,5 m
3
/h
Hydraulical chart of cooling
circuit’s connection

12
9.1 DIMENSIONS OF COOLING CIRCUIT
10 BOILER ASSEMBLY
Set the boiler body on the place, connect heating and return water with the help of flanges with
the G2" internal thread. To the outlet of heating water in the upper part of the boiler body, ad-
just a pipe on the G2 thread and a cooling loop on the pipe, then connect to the heating system.
Into the tube in the body of the cooling loop insert a sensor of the thermostatic valve which
connect to the cooling water feed. The outlet of cooling water connect to the drainage. Connect
return water from the heaters and cooling loop to the bottom part of the body.
Attach a discharge cock into the G1/2" opening in the rear bottom part of the boiler.
Attach the boiler to the chimney with the help of the flue pipe with 150 mm diameter.
11 ACCESORRIES ASSEMBLY
Assembly of screw with end piece proceed as following (fig. 5):
•Remove the screw M8×60, fixing the air blast damper to the ash box port and fix on the
screw with the bakelite knob (1), which is supplied in the packaging. Place the blind nut with
cap (2) at the end of M10 screw. Fix M6 lever to the air blast damper (3) placing it in a hori-
zontal direction on the right. The lever has an opening at the end where the chainlet of the
thermostatic regulator will be connected.
LEGEND:
1 – Screw with M10 × 70 knob
2 – Blind nut with cap
3 – Air blast damper

13
11.1 CASING ASSEMBLY
Two superior tie rods are screwed on three nuts at the front side of the boiler: the second and
the third nut serve to place correctly the lateral sides of the casing. Two nuts, one for fixing the
clamp holders for the lateral sides are screwed on the inferior tie rods, both form the front side
and from the rear side. The assembly of the casing components has to be carried out in the fol-
lowing way:
•unscrew with some rotations the second or third nut of each tie rod,
•hook the left side of the (2) on the lower tie rod and superior of the boiler and adjust the po-
sition of the nut and locknut of the upper tie rod,
•fix the lateral side in blocking the locknut,
•in order to assembly the right side (5) proceed in the same way,
•carry out the same operation to fix the back lower board (1)
•the protection cover (6) is fixed to sides with pins and pressure stakes
•insert a thermometer (4) into the upper cover (3) then unwind the capilary of the thermome-
ter and introduce it in the left sheath of the posterior head, introducing the contact spring.
To the right sheath fix a return valve and screw a manometer into the return valve. Fix the
cover at the lateral sides of the boiler with pins and pressure stakes.
WARNING: Keep the test certification together with the boiler documents.
11.2 ASSEMBLY OF THE CONTROL ROD OF CHIMNEY FLAP
Assembly of the control rod of chimney
flap:
•punch holes in the skeleton (in the right
lateral side)
•insert the rod pos. 2 through holes
•at the end of the rod fix a ball pos. 3
•mount the lever pos.1 on the axis of the
chimney flap
•the rod pos. 2 insert into the lever pos. 1.
Slip a washer pos.7 on the rod from both
sides. After slipping lock with a pin pos.
8. On the rod put a screw, washer, and a
nut pos. 4, 5 a 6. Tighten the screw
slightly. Test the function of the flap. If
needed, adjust the angle of slipping and tighten the screw firmly.

14
12 DRAUGHT REGULATOR
Draught regulator – the thermostatic regulator is equipped with a thermostatic head adjustable
between 30 and 100 ° C.
Screw the regulator into the ¾" opening of the front head and put it with red index on the upper
part. The lever with the chainlet should be introduced in the regulator holder after removing the
plastic lock. If the joint which fixes the lever with the chainlet is taken out, take care in assem-
bling it again in the same position.
After adjusting the knob to 60°C, block the lever with the chainlet in a slightly inclined position
downwards so that the chainlet will be in axis with the air gate damper. For the adjustment of
the regulator that basicly depends on the determination of the chainlet length, proceed in the
following way:
•adjust the knob at 60°C,
•burn the boiler with open air gate damper,
•when the temperature of heating water reaches 60°C, fix the chainlet in such a position that
the air gate damper will be open with the opening of cca.1mm.
After this setting the regulator is calibrated and it is possible to choose the desired operating tem-
perature by a rotating head.
13 PUTTING THE BOILER INTO OPERATION – INSTRUCTIONS
FOR A SERVICE ORGANIZATION
WARNING: Putting the boiler into operation can be performed only by a service organi-
sation certified for this activity.
Checking activities before start
Before putting the boiler into operation it is necessary to check:
a) filling the heating system with water (check by a manometer) and tightness of the set
b) connection to the chimney - this connection can only be carried out with the approval of a
chimney-sweeping company, to measure the draught of the chimney by a chart of fuels
Filling the heating system with water:
• Water hardness must correspond to standards and in case of unsuitable hardness it is necessary
to treat water
•Heating systems with an open expansion tank enable a direct contact of heating water with
the atmosphere. In the period of heating expanding water in the tank absorbs oxygen that
increases corrosive effects and in the same time water is evaporated significantly. To refill,
only water treated to values by STN 07 7401: 1992 can be used.
•The heating system must be thoroughly rinsed, to wash out all the dirt.

15
•During the heating period it is necessary to keep constant volume of water in the heating
system. When refilling the heating set with water it is necessary to avoid sucking the air in
the system. Water from the boiler and heating system must never by drained or taken for use
except for unavoidable situations such as repairs and so on. Draining water and feeding with
new one increases the danger of corrosion and incrustation.
WARNING: If refilling is necessary, it can be done only to a cooled boiler to prevent
breaking the elements.
•After filling the boiler and heating system check the tightness of all joints
•Finishing the assembly and testing of heating must be recorded to the Letter of warranty
Connection to the chimney:
Connection of the boiler to the chimney must be performed by the standard and with the ap-
proval of a chimney-sweeping company. Boilers in the central heating system must be connect-
ed to a separated chimney vent. The chimney with the right draught is a basic condition for a
good operation. It influences the performance of the boiler as well as its effectivity.
Putting the boiler into operation
•Heating the boiler up
•Bring the boiler to the required operating temperature, recommended outlet water temper-
ature 80 ° C
•Adjust the lenght of the chainlet of the draught regulator (according to the instructions for
the draught regulator).
• Keep the boiler in the operation state by the proper standards.
• Check again the boiler’s tightness.
•Inform the customer with the boiler’s attendance
•Make a record into the Letter of Warranty
14 ATTENDANCE OF THE BOILER BY A USER
WOOD – To reach the nominal output it is necessary to keep the max. 20% moisture content of
wood. Fuel must be stored in dry place. Cleaning of the grid is made not to let burning fuel drop
down to the ash collection basin.
BLACK COAL - The most proper fuel is black coal of 24-60mm grain-size
How to start fire
1. Check the pressure of water in the heating system.
2. Open boiler fittings between the boiler and heating system.
3. Clean the grid, ash collection basin, flues and walls of the boiler (after cleaning the boiler
check the tightness of the cowl).
4. Spread wood through the ash port and chamber port along all the lenght on the cleaned
grid.
5. Flue flap in the cowl adjust into the position of open and close the load port.
6. Ignite wood through open ash port and chamber port.
7. Close the chamber port and ash port and open the fuel cut-off slide fully.
8. On burning wood load a thin layer of basic fuel.

16
9. After inflaming it, load other dose of fuel up to the bottom edge of a load port and arrange
the fuel into an even layer.
10. As soon as fuel gets deep red glare, open a little the air disk of secondary air inlet on the load
port by means of a tool.
11. After the flame turns yellow, close the air disk of secondary air.
Operation:
1. After reaching the temperature of heating water adjust the inlet of combustion air. The boiler
output is regulated by the change of draught with the help the flue flap in the cowl. A slight
output regulation is carried out with a fuel cut-off slide that regulates the air inlet under the
grid either manually or with a draught regulator. Adjust the draught regulator so that the
cut-off slide in the ash port was almost closed in the moment when the required tempera-
ture is reached.
2. Reloading the boiler during operation depends on the need for heat and burning intensity.
When reloading, the layer of fuel must be equally thick.
3. When using coke, black coal, wood, it is necessary to open partially the inlet of secondary air
inlet in the loading port during all the time of inflamation of reloaded fuel. (The air inlet
must be controlled by a tool due to the surface temperature.)
4. When starting the night operation, clean the grid, let the reloaded fuel burn thoroughly and
then decrease the boiler output by cutting off the draught by the cut-off slide and turning
down the air inlet of the secondary air inlet. The level of opening of the cut-off slide and air
inlet must be tested and it is necessary to prevent escape of flue gases into the boiler room.
The draught regulator should be turned off (close the cut-off slide).
5. To restart operation of the boiler in the morning, open the cut-off slide and air inlet and rake the
grid after opening the ash port.
6. The ash port must be permanently closed during the operation of the boiler.
7. If necessary, empty the ashtray out (use protective gloves).
Dew creation and tarring of the boiler
After first burnings in a cold boiler water condenses on the walls and flows down into the ash
collection space which can make the impression that the boiler is leaking. This dew disappears
after setting ashes down on the inner walls of the boiler. When the boiler runs with low tempera-
ture of water under 65°C and with wet wood, water condensates in flue gases, condensate flows
down cold walls of the boiler. Heating with low temperatures is also not suitable for the lifetime
of the chimney body.
Tarring of the boiler occurs under similar conditions (low output, low temperature) furthermore
during insufficient burning (lack of combustion air) Tar from the boiler can be removed best un-
der the minimum temperature of 90°C in the boiler. This temperature can be reached fast by
turning off the radiator. To prevent dew creation and tarring of the boiler, it is recommended to
run the boiler with the temperature over 65°C and choose the boiler according to the needed
output of the heating system. Overlarge boiler then is deteriorated at low temperatures.
Interrupting the operation of the boiler
The operation is interrupted when the fuel in the boiler is let to burn up. We do not recommend
to haste the interruption of the operation in any way.
Shorttime interruption of the operation
For shorttime interruption of the operation clean from burnt fuel, empty the ashtray, clean sur-
faces of load port, clean the ash collection space and close the load and ash port.

17
Longtime interruption of the operation
For longtime interruption of the operation (e.g. end of heating season) clean the boiler properly,
so as moisture causing excessive corrosion is not kept in soot and ash.
IMPORTANT WARNING:
1. Attendance of the boiler can be only carried out by adults familier with this instruction. To
leave children without a supervision of adults near the boiler is not allowed. Any interven-
tions endangering the health of people attending others are not allowed.
2. If there is a danger of creating or coming of combustible vapours into the boiler room or dur-
ing works when there is a temporary danger of fire or explosion (glueing of floor coverings,
painting by inflammable paints), the boiler must be put out of the operation before start-
ing the works.
3. Forignition of the boilerit is FORBIDDEN to use inflammable liquids
4. During theoperation it is FORBIDDEN to overheat the boiler.
5. No combustible objects can be put on the boiler or in its very near distance.
6. When taking ashes out of the boiler there can be no combustible materials within the min-
imum distance of 1500 mm from the boiler.
7. When the boiler runs with the temperature lower than 65 °C, dew creation can occur on the
boiler body as well as corrosion that shortens the lifetime of the boiler body. Therefore we
recommend to run the boiler with the temperature over 65 °C and higher.
8. After the end of the heating season, it is necessary to clean the boiler, flues and a cowl thor-
oughly. Grease swivel pins, the chimney flap and other movable parts of the boiler with
graphite grease. Keep the boiler room clean and dry.
15 MAINTENANCE
Remove ashes from the ashtray during the operation
even more times a day according to the kind of the used
fuel because a full ashtry in interferes with right distribu-
tion of combustion air under fuel and causes unequal
burning of fuel on the grid. All the residuals, especially
cinder, are removed before each new ignition and dur-
ing restarting the boiler in the morning. Ashes need to
be put into incombustible containers with covers. Dur-
ing the work it is necessary to use protective aids and
regard personal safety.
For heating with black coal and wood clean the walls of
the boiler in the grate, draughts and the cowl regular-
lywith brushes. If after the use of some fuels with more
gas released tar creates on the walls of the combustion
space, remove it with a scraper or by burning dry hard
wood (or coke) with the boiler set on maximum opera-
tion temperature. Measure the draught (by a service or-
ganization) according to the chart.

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16 INSTRUCTIONS FOR PRODUCT LIQUIDATION AFTER ITS
SERVICE LIFE
As this product is made of common metal materials , we recommend to liquidate single
parts in this way:
• heat exchanger (grey cast iron) –by a company dealing with collection and liquidation of waste
• piping, casing – by a company dealing with collection and liquidation of waste
• other metal parts – by a company dealing with collection and liquidation of waste
•insulating material – to common waste
By disposal of the package please follow these rules:
•plastic foil, cardboard package and wooden pallet – to common waste
•metal tape – by a company dealing with collection and liquidation of waste
17 WARRANTY AND RESPONSIBILITY FOR DEFECTS
•User is obliged to order boiler’s putting into operation by specialized company,
•Maintenance of the boiler must be performed regularly by the user.
•Each damage must be always announced immediately after the detection in written form
and its repair agreed later by phone.
•if these rules are not followed the warranty will not be accepted by the manufacturer.
•The manufacturer reserves the right for changes made as the innovation of the product that
are not involved in this instruction for use.
The producer is not responsible for:
•damages caused by a wrong assembly and attendance of the product
•product’s damage caused during transport or other mechanical damages
•damages caused by inappropriate storage
•damages caused by low-quality water in heating system
More information about conditions of warranty are stated in Letter of Warranty.

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18 REPAIRS
A person performing the attendance of the boiler can carry out only the repairs consisting of
simple exchange of parts like packing cord. Other necessary defects can be only removed by a
service company from the list that is delivered as a supplement of the instructions for use. For
the repairs, use only original spare parts.
Defect Cause Removal
Insufficient output of the
boiler
Low fuel efficiency
Low pressure
Heat exchanger and flue branch with flap
covered by soot
Use fuel with higher efficiency for
lower outside temperatures Adjust
chimney
Clean the elements of exchanger as
well as the flue branch
Boiler cannot be regulated Doors to ashtray is not tight
Strong draught
Check and adjustment of packing
cords
Adjust chimney
High temperature in boiler,
low one in radiators
High hydraulical resistance mainly in sys-
tems with gravity circulation,
Strong draught, high fuel efficiency
Decrease hydraulical resistance. by a
circuit pumpDecrease the draught
with a flap