Kovarson MAKAK Series User manual

KOVARSON s.r.o.
Lhota u Vsetína 4
755 01, Vsetín
tel. ČR: [phone]
tel. SR: [phone]
email: info kovarson.com
Manual for pyrolytic boiler
MAKAK

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Dear customer,
Thank you for purchasing pyrolytic boiler MAKAK and the trust you have put in
KOVAR ON s.r.o.
The boiler you have purchased has been comprehensively tested by our development
department and we believe that you will be satisfied with our product. To avoid any problems,
we advise you to read carefully the installation manual of the boiler, before you start using it.
If you have any questions, please do not hesitate to contact our service engineers who
will help you with your inquiries and always resolve your issue quickly.
Comfortable heating by
KOVAR ON s.r.o.

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Obsah
1) Boiler application and benefits ..................................................... Chyba! Záložka není definována.
2) Boiler description ......................................................................... Chyba! Záložka není definována.
2.1 Boiler construction ............................................................... Chyba! Záložka není definována.
2.2 Function parts of boiler ........................................................ Chyba! Záložka není definována.
2.3 Boiler accesories ................................................................... Chyba! Záložka není definována.
3) Technical parameters .................................................................... Chyba! Záložka není definována.
4) Recommended fuel ....................................................................... Chyba! Záložka není definována.
5) Boiler installation ......................................................................... Chyba! Záložka není definována.
5.1 Rules and regulations ........................................................... Chyba! Záložka není definována.
5.2 Placement options ................................................................. Chyba! Záložka není definována.
5.3 onnecting the boiler to the chimney and outlet of combustion products Chyba! Záložka není
definována.
5.4 Air supply to the boiler ......................................................... Chyba! Záložka není definována.
5.5 onnecting the boiler to the heating system ......................... Chyba! Záložka není definována.
5.6 The cooling loop connection ................................................ Chyba! Záložka není definována.
5.7 onnection to the mains ....................................................... Chyba! Záložka není definována.
5.8 Installation of boiler parts ..................................................... Chyba! Záložka není definována.
5.8.1 Installation of the boiler casing ........................................................................................ 9
5.8.2 Installation of the exhaust fan ........................................................................................ 10
6) Operation of the boiler by user ..................................................... Chyba! Záložka není definována.
6.1 Verification activities before usage of the boiler ................................................................... 11
6.2 Firing .................................................................................... Chyba! Záložka není definována.
6.3 Stoking.................................................................................. Chyba! Záložka není definována.
6.4 ombustion control .............................................................. Chyba! Záložka není definována.
6.5 Power setting and regulation ................................................ Chyba! Záložka není definována.
6.6 Removal of ash ..................................................................... Chyba! Záložka není definována.
6.7 leaning of the boiler ........................................................... Chyba! Záložka není definována.
6.8 Maintenance and inspection of the boiler ............................. Chyba! Záložka není definována.
7) ontrol unit SPARK ..................................................................... Chyba! Záložka není definována.
7.1 ontrol unit SPARK description .......................................... Chyba! Záložka není definována.
7.2 Operation of the controller ................................................... Chyba! Záložka není definována.
7.3 Installation of temperature sensors ........................................................................................ 14
7.4 Technical data ....................................................................... Chyba! Záložka není definována.
7.5 A wiring diagram of the contoller ........................................ Chyba! Záložka není definována.
7.6 ommissioning ..................................................................... Chyba! Záložka není definována.
8) Important alerts ............................................................................. Chyba! Záložka není definována.
9) Disposal of the product after its service life .................................................................................. 18
10) Warranty and liability for defects ............................................. Chyba! Záložka není definována.
12) Trouble shooting ....................................................................... Chyba! Záložka není definována.
13) Recommended connection of the boiler ................................... Chyba! Záložka není definována.

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1) Boiler application and benefits
Czech boiler MAKAK is designed for economical and ecological heating of family
houses, business premises and medium – sized objects, including the ability to heat the water.
2) Boiler description
2.1 Boiler construction
The boiler is based on the principle of two-stage combustion at a high temperature
during a process is a wood gasification followed by combustion flue gases with an exhaust fan
which exhausts gases from the boiler.
Boiler MAKAK is welded boiler plate of high quality. The upper internal part of the
boiler consists of a fuel hopper, which is at the bottom equipped with a heatproof pipe fitting
having an elongated hole for the passage of gases. In the space below the fitting is a burn-out
area and below that is an ashtray. At the rear of the vertical flue gas heat exchanger which is
in the upper part of the collecting channel through which cold gases coming into the chimney.
Most strongly stressed part of the boiler by a high temperature, corrosive gases, acids
and condensates is the upper chamber, which is equipped with stainless steel inserts, which
protects the combustion chamber of the boiler and increases the durability of the boiler.
The inner part of the boiler is made of sheet metal with a thickness of 6mm, flue gas
heat exchanger at the back of the boiler is constructed by 5-exchanger tubes with inner
diameter of 6mm. The boiler has double casing, the inner part is made of 6 mm high quality
steel and any areas which might be in contact with the flame are reinforced by 8mm plate.
The outer part of the boiler is made from metal sheet 4mm.
In front of the boiler are upper stoking door, middle cleaning (ignition) door and
bottom door for the ash.
On the back of top boiler cover is a removable casing under which you will find
cleaning access for flue gas chamber. On the side of the boiler is located a handle for cleaning
turbulators.
The body is insulated with mineral wool 40mm thick and cover by the metalling.

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Pic. No.1 Main dimension of boiler

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Pic.No.2 Main parts of boiler
1) panel for control unit
2) control unit
3) handle for cleaning
4) upper casing of boiler
5) side casing of boiler
6) stoking door
7) cleaning door
8) ash door
9) exhaust fan
10) flue outlet
11) back casing of the
boiler
12) heating water inlet
13) drain valve
14) top cover for cleaning
the exchanger
15) heating water output
16) cooling loop,
connection to the water
order
17) cooling loop,
connection to waste
18) intake of primary and
secondary air
19)regulation of primary
air
20)regulation of
secondary air
2.2 Function parts of boiler
Filling chamber – here is the primary combustion (gasification) process and it also serves as
the fuel hopper.
Refractory concrete fitted with nozzle – intake of secondary air to the nozzle.
Post - combustion area – there is a secondary combustion process and area which serves for
the collection of ash .
Main tube exchanger – transmitting the heat from the flue gases to heated water.
Fan – blows the air which is required for the combustion process, divided into:
a) Primary – air intake to the filling chamber supports the primary combustion.
b) Secondary– air intake into the nozzle is mixed with the woodgas.
Antismo e flap – system using a flap which draws smoke when you open the filling door.
Control unit – regulates the amount of air using the fan speed control, regulates the
efficiency of the boiler on the basis of the output temperatures. Controls pump and mixing
valve + it can also monitoring the storage tank.
Heatexchanger turbulators – additional device, which is located in the rear exchanger tubes.
Turbulators increasing efficiency and simplify cleaning of the boiler.
Cooling loop – The loop should be permanently connected to a water order and to the waste.
This system is monitoring a temperature using a bimetallic sensor to prevent overheating of
the boiler. In case that the boiler is overheated system is able to cool him quickly.

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2.3 Boiler accesories
The boiler is delivered with the following accessories:
teel brush 1pc
craper 1pc
Exhaust fan 1pc
Flange 2pc
Manual for operating 1pc
Manual PARK 1pc
Filling valve 1pc
3) Technical parameters
Chart, No.1 – Dimensions and technical parameters of the boiler
Boiler type
MAKAK
20
MAKAK
25
MAKAK
30
MAKAK
35
MAKAK
40
Wood efficiency % 88,53 89,51 90,63 91,75 92,06
Weig t kg 450
Water volume l 120
Flue diameter mm 156
Combustion c amber
volume dm
3
135,5
Combustion c amber dept mm 550
Boilers dimensions mm See Figure 1
Size of opper loading
window mm 440x300
EN 303-5 boiler class - 4 5 5 5 5
Maximum operating
excess water pressure bar 2
Tested operating excess
water pressure tolerance bar 2
Recommended operating
tem. of eating water °C 50 - 85
Recommended operating
temp. of eating water °C 70 - 90
Minimum temperature of
returning wate °C 55
Noise level dB < 60
C imney draft during t e
ex aust fan running at a
rated power
Pa 20
Boiler connections - water
eating, return water DN G 2"
Filling, Draining DN G 1"
Cooling loop DN G 1/2"
Supply voltage V 230
Electric load W 60
International protection - IP20

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Chart, No.2 Thermal technical parameters of the boiler (wood combustion)
Boiler model
MAKAK
20
MAKAK
25
MAKAK
30
MAKAK
35
MAKAK
40
Nominal output kW 20 25 30 35 39
Minimum output kW - - - - -
Consumption of fuel at
nominal outpu kg.
-1
5,575 6,648 7,879 9,110 9,446
Burning time at nominal
output 2,17 2,16 2,16 2,15 2,15
Temperature of emissions °C 86,6 111 135,4 160 159,7
Volume of emissions
output at nominal level kg.s
-1
0,0181 0,0201 0,0224 0,0246 0,0253
4) Recommended fuel
It is recommended to burn wood in maximum lengths according to the parameters of the
boiler. It is neccesary to burn the wood with a maximal dampness up to 20%. When damp
wood is burned it releases the water that condenses on the walls of a body and chimney. This
combustion reduces the durability and performance of the boiler due to the formation of
aggressive substances.
The vertical axis shows the calorific value of wood kWh \ kg and the horizontal axis
shows percentually the water content in wood. Moreover the comparison between coniferous
and deciduous trees.
FIG. no 3 Calorific alue of wood material in dependence on the water content

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5) Boiler installation
When handling and storing of the product you must be careful to avoid any breaches of
boiler.
The boiler has to be installed by heating specialists with a valid license for the installation
and maintenance of such equipment. The installation project must be undertaken according to
valid regulations. Before the installation, check the completeness and integrity of the boiler
package, if they are correct with the data according to the product label.
Before commissioning a boiler, it meets the requirements of C N. (e.g. chimney revision,
approval of the boiler by chimney office, heating system project, heating test, etc.)
The main condition for boiler installation is the involvement of the mixing valve in the
boiler circuit and wiring of the cooling loop. If there will be no cooling loop connected, it is
necessary to ensure heat dissipation during a blackout which will block the pump and the
mixing valve actuator.
Before the heating season it is necessary to check the water pressure and bleed the heating
system.
The manufacturer is not responsible for demages of the boiler caused by errorneous
installation!!!
5.1 Rules and Regulations
*The solid fuel boiler has to be installed by heating specialists with a valid license for
the installation and maintenance of such equipment. The installation project must be
undertaken according to valid.
The heating system must be filled with water which meets Č N 07 7401 requirements
and, in particular, its mineral content must not exceed the maximum parameters.
Doporučené hodnoty
Hardness mmol/l 1
Ca2+ mmol/l 0,3
Total Fe & Mn concetration mg/l (0,3)*
CAUTION!!! The manufacturer does not recommend the use of antifreeze.
a) About the heating system
Č N 06 0310 Heating systems in buildings - Design and installation
Č N 06 0830 Heating systems in buildings – afety equipment
Č N 07 7401 Water and steam for thermal energy equipment with
working pressure up to 8 MPa.
Č N EN 303-5 CH boilers – Part 5: CH boilers for solid fuel with manual
or automatic delivery, nominal heat output of up to 300 kW
– Terminology, requirements, testing and marking.

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b) About the chimney
Č N 73 4201 Designing chimneys and flues.
c) Due to fire regulations
Č N 06 1008 Fire safety for heating equipment.
Č N 73 0802 Fire safety in building – nonproductive – objects.
Č N 73 0823 Technical fire properties of materials. Flammability rank of building
materials.
d) The power supply
Č N 33 0165 Electrical regulations. Marking of wires with colours or
numbers. The implementing regulations.
Č N 33 1500 Electro-technical regulations. Testing of electrical devices.
Č N 33 2000-3 Electro-technical regulations. Electrical devices. Part 3:
Declaration of the basic characteristics.
Č N 33 2000-4-41 Electrical devices: Part 4: afety ection 41: Protection
against electric shock.
Č N 33 2000-5-51 Electro-technical regulations. Construction of electrical
devices.
Č N 33 2130 Electro-technical regulations. Indoor electrical wiring.
Č N 33 2180 Electro-technical regulations. Connection of electrical
devices and appliances.
Č N 34 0350 Electro-technical regulations. Regulations for mobile
connections and cable placement.
Č N EN 60 079-10 Electro-technical regulations. Regulations for electrical
equipment in potentially explosive areas with flammable
gases and vapours.
Č N EN 60 079-14 Electrical apparatus for explosive gas atmospheres - Part
14: Electrical installations in hazardous areas (other than
mines).
Č N EN 60 252-1 AC motor capacitors - Part 1: General - Performance,
testing and rating - afety requirements - Guide for
installation and operation.
Č N EN 60 335-12 Electric appliances for household and similar purposes -
afety - Part 1: General requirements.
Č N EN 60 335-2-102: Electric appliances for household and similar purposes
afety - Part 2-102: pecific requirements for appliances
burning gas, oil and solid fuel and containing electrical
connections.
Č N EN 60 445 Basic and safety principles for man-machine interface,
marking and identification.
Č N EN 60 446 Basic and safety principles for man-machine systems –
Identification of conductors by colours or numbers.
Č N EN 61000 – 6 – 3 EMC Part 6-3: Generic standards - Emission - for residential,

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commercial and light industry.
Č N EN 61000 -3 – 2 EMC - Part 3-2: Limits - Limits for harmonic current emissions
(equipment input current up to and including 16).
Č N EN 61000 – 3 –3 EMC – Part 3 - Limits - ection 3: Limitation of voltage
fluctuations and flicker in low-voltage supply systems for
devices with nominal current <16A.
e) About the DHW heating system
Č N 06 0320 Heating systems inside buildings – DHW set-up –
Design and planning.
Č N 06 0830 Heating systems inside buildings – afety equipment.
Č N 73 6660 Indoor water systems
5.2 Placement options
The boiler can be installed and operated in a simple environment AA5/AB5 according
to C N 33 2000-3. The boiler is equipped with a portable power cable and plug. The
boiler must be in compliance with EN 60 335-1 ed. 2 Article 7.12.4, positioned so that
the plug is accessible.
The installation and use of the boiler must comply with all Č N 06 1008
requirements.
Location of the boiler in conformance to fire regulations:
1. Positioning on a floor made of non-combustible material:
• The boiler has to be set on a non-combustible insulating mat exceeding the dimensions of
the boiler by 20 mm on all sides.
• If the boiler is located in the basement, it is recommended to placed the boiler on a base at
least 50 mm high. The boiler must be established at horizontally level; any unevenness in
the subsctructure is eliminated using the screws under the fuel hopper.
2. afe distance from combustible materials:
• When installing and operating the boiler, keep a safety distance of 200 mm from
combustible materials
• For easily flammable materials that burn quickly and by themselves even after removal of
the ignition source (such as paper, cardboard, asphalt and tar paper, wood and fibreboard,
plastics, floor coverings) the safe distance is doubled to 400 mm
• The safety distance must be doubled to 400 mm also when the reaction to fire is not proven
Boiler positioning with regard to the necessary handling space:
• In the front of the boiler must be left minimally 1000 mm space for handling.
• The minimum distance between the rear of the boiler and the wall is 400 mm.
• The minimum distance from the side wall of the boiler is 100 mm.
• Above the boiler minimally 450 mm.

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Boiler positioning with respect to the mains:
• The boiler must be positioned so that the plug in the socket (230 V/50 Hz) is always
accessible
Location of fuel:
• For proper combustion, it is necessary to use dry fuel. Manufacturer recommended fuel
stored in cellars or at least sheltered
• It is impossible to store fuel for the boiler or next to the boiler at a distance of less than 400
mm
• The manufacturer recommends to keep the distance between the boiler and fuel minimaly
1000 mm or store the fuel in a different room than the installed boiler
Connecting to the heating system must be made by a heating specialist with a valid
license.
Pic. n.4 Location of the boiler

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5.3 Connecting the boiler to the chimney and outlet of combustion products
The flue must lead to a chimney flue with a minimal possible lenght. The flue must
rise towards the vent, in no case shall fall. The flue must be mechanically strong, tight passes
and the accessible for cleaning. The inner diameter of the flue shall not be greater than the
diameter of the flue and it is forbidden to narrows the flue toward the chimney. The use of
large quantities of knees is not recommended.
Methods of implementation flues are given in Č N 06 1008.
The chimney must be designed so that the chimney flue develop a sufficient draft
(referred to the technical parameters of the boiler) and led the flue gases into the atmosphere.
The manufacturer recommends the chimney inset.
If the chimney draft is big or small it is necessary to install the draft regulator.
5.4 Air supply to the boiler
In the room where the boiler is installed, it must be ensured continuous supply of air
for combustion and ventilation. If it is not provided, it is necessary to ensure air vent from the
outside according to the standards.
5.5 Connecting the boiler to the heating system
The boiler is connected to heating system with 2" mouthpiece. For the filling and
draining of the boiler there is located an inlet (drain) valve beneath the return water. Filling
and draining should be performed using a hose. The heating system must be filled with water
that meets the requirements of Č N 07 7401.
The boiler must be connected to the circuit so the temperature of the return water was
above 55°C. This can be achieved by mechanical or controlled mixing valve, which is
controlled by the control unit. If the minimum temperature of the return water is not reached,
manufacturer can not guarantee the required service life of the boiler.
Boiler construction allows the connection of the boiler with a maximum pressure
according to the technical parameters of the boiler.
Connection the cooling loop as it is described in chapter 5.6
5.6 The cooling loop connection
*Connection of the cooling loop (unless otherwise stated) is performed according to
pic. n.5. On one of two 1/2" outlet serves for the water main connect and the other one 1/2"
outlet serves for joining runoff into drains.
In case the boiler is overheated (temperature above 95°C) the thermostatic valve will
automatically open. This valve is installed on cold water supply pipe. When the overheating
alarm turns on, the fan will stop and boiler remains in stable heat mode. Bimetallic sensor
which senses temperature is placed in the boiler sump. After the end of the cooling proces, is
the boiler temperature lower by 15°C then water flow will stop automatically.
This protection system only works reliably provided a constant supply of pressurized
water from the water main. Due to a mechanical protection which serves mainly for situations
as a power failure. It is necessary to be careful while connecting it to a water system!

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Connect the cooling loop is the only condition for safe operation of the boiler.
Connections must be performed only by authorized personnel.
Pic. No. 5 Cooling loop
5.7 Connection to the mains
The power supply 230 V / 50 Hz with boiler attached by a cord and plug. The plugging
must comply with C N. The plug must always be in reach. Unauthorized intervention in the
electrical installation of the boiler will cause damage and can also cause fatal injuries.
5.8 Installation of boiler parts
ituated the boiler on the substructure (pad) into a horizontal position.
5.8.1 Montáž opláštění kotle
Kotlové těleso je dodáváno již originálně oplechováno. Pokud je potřeba opláštění kotle
sundat, tak postupovat dle následujícího postupu:
1. sundat oba vrchní kryty – nasazen na sponkách, jen vycvaknout
2. odšroubovat zadní část oplechování
3. Odmontovat oplechování levé a pravé strany – každé opláštění připevněno 4ks
šroubu.

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5.8.2 Montáž odtahového ventilátoru
Na vývod kouřovodu kotlového tělesa se nanese kamnářský tmel a poté se nasadí
odtahový ventilátor. Vývod kouřovodu směřovat směrem nahoru! Po usazení ventilátoru
přitáhnout šroub na odtahovém ventilátoru a obtmelit prstem dokola, tak aby nedocházelo
k přisávání vzduchu.
Připojíme kondenzátor dle schématu zapojení kondenzátoru.
NCT4C, NCJ4C
Obr. č. 6 – schéma zapojení kondenzátoru
6) Operation of the boiler by user
The boiler must be operated according to the manufacturer's instructions to avoid any
problem caused by the user, so it is highly recommended to read instructions manual for the
boiler and control unit PARK.
This appliance can not be used by younger children than 8 years old and persons with
reduced physical, sensory or mental disorders or by users without sufficient experience. They
are able to operate wit the boiler only if they are under the supervision or receiving the
instructions from the specialist and they understand the dangers that they come into contact.
Children should not play with the appliance. Cleaning and maintenance of the boiler can not
be perform by the kids.
Once in every 14 days period is needed to check the water pressure in the heating system.
If the pressure is low it is necessary to replenish the water. If the boiler in the winter period is
not operated, it is recommended to drain the water from the system due to freezing. The
discharged of the water is not recommended only when it is necessary and for the shortest
U
~
MOTOR
černý, schwarz, black
hnědý, braun, brown
rudý, rot, red

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period of time. At the end of the heating season, it is necessary to thoroughly clean the boiler
and check the boiler for any damages that might be caused by the operation.
It is recommended to clean the impeller and an air chamber of the exhaust fan twice in a
year.
6.1 Verification activities before usage of the boiler
Before the commissioning of the boiler it must be chec ed:
a) Heating system water level
The mineral content (hardness) of the water used inthe boiler must comply with Č N 07 7401
standards and it is essential that, if the mineral content is not in compliance, the water must be
softened – this is covered in ection 05.01. Heating systems with open expansion tanks allow
direct contact between the water and air in the environment. During the heating season the
expanding water in the tank absorbs oxygen, which hastens the effects of corrosion while
allowing significant water evaporation. If more water is added, it must be treated according to
Č N 07 7401 standards.
The heating system must be thoroughly rinsed out in order to eliminate all impurities.
During the heating period a constant volume of water in the heating system must be
maintained. When adding water to heating system, It must be ensured that no air is drawn into
the system. Water from the boiler and heating system must never be discharged or removed
except in cases of emergency such as repairs etc. Draining the water and replenishing it
increases the risk of corrosion and scaling. If it becomes necessary to add water to the heating
system, do soonly when the boiler is cold to avoid cracking.
b) A tight heating system
c) Connecting the flue – The flue must be approved by a chimney inspector
d) Burner tightness
You must connect the flexible cord with a plug into a standard socket 230 V/50
Hz/10A.

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6.2 Firing
Please note that making fire is strictly forbidden to use flammable substances.
− Check the settings in the boiler control, operating control PARK.
− Check the amount of water in the heating system by looking at the gauge.
− Open the shut-off valves between the boiler and the heating system.
− Check the operation of pumps (mechanical spinning)
− Clean the boiler (if it is not the first firing). The ash door must be permanently closed
during the fire making and operation.
− Primary air slider control set to the open position.
− At the bottom of the filling chamber make fire using the small chips, sawdust or shavings.
− Put a few pieces of small wood in to the filling chamber, close the filling door.
− Ignite the wood throught the middle door.
− tart the control unit, using the fan we will support combustion in the chamber, which
create a hot layer in order to fill up the filling chamber with the wood.
− If we follow the correct procedure we should be able to stoke a wood to the chamber in
about 10 – 15 minutes.
− table combustion indicates that we can set the boiler to the desired performance and
reduce the amount of primary and secondary air.
The shape of the flame gives us information about the correct settings for the nominal
rating. When checking the shape of the flame, make sure that the boiler is set at nominal
power.
6.3 toking
Hopper lasts for about 8 to 12 hours operation at medium power. In energy saving
mode, the boiler should last up to 24 hours.
a) lightly ajar the top door, in order to exhaust the woodgas from the filling chamber.
b) Completly open the upper stoking door.
c) Make sure that the basic layer is burning.
d) Fill up the filling chamber with the fuel.
e) Closed the upper stoking door.
6.4 Combustion control
During the operation of the boiler it is necessary,to ensure the burning was carried out
as perfectly as possible for efficiency reasons and to minimize the harmful substances such as
hydrocarbons and tar which could clogged the boiler and flue. Combustion quality determines
the types and moisture of the material, according to pic. no. 3. Further combustion affects the
way of stoking the filling chamber and self regulation of the boiler.
In warmer seasons it is imperative to firing and stoking to the boiler, so boiler will
work in rated power without an outage at least 2 hours. Therefore the dose of fuel in the
warmer spring and autumn days should be smaller. ee chapter 6.3.
Combustion can also be affected by the amount of primary and secondary air. It could
be regulated by the rod on the left side of the boiler. The burning of harder wood, briquettes
and small materials need a higher levels of secondary air.

13
Recommended settings of primary and secondary air can be seen on pic. 6
Pic. No. 6 – Regulation of primary and secondary air from 0 to 10
6.5 Power setting and regulation
Power control is governed by the exhaust fan speed. When firing up the boiler, boiler
circuit reaches the desired minimum temperature. Then begins the venturing excess heat
energy to the heating circuit. If the heating circuit is heating up, so the control unit switches
off the fan and boiler passes into the so-called attenuation mode. If the water temperature
drops, the boiler will go back into operation.
The boiler can be connected to a room thermostat which is superior to whole heating
system and boiler goes into decline based on achieving the desired temperature in the room.
When is the temperature in the room lower, the boiler starts heating again.
Chart. No. 6 Control unit settings for the wood at nominal power
Označení kotle
MAKAK
20
MAKAK
25
MAKAK
30
MAKAK
35
MAKAK
40
Otáčky odtahového
ventilátoru 40 55 70 5
100
Primární vzduch 6 7 9 10
Sekundární vzduch 3 3-4 4 4-5 6
6.6 Removal of ash
The ash is collected in the middle door. When is the coating thickness of the ash is about 5-7
cm. We take the ash throught the middle door or we can use the nozzle for collecting the ash
in the post combustion area using a ash door.
The bottom door mainly serves for taking off the ash.
6.7 Cleaning of the boiler
Main boiler cleaning is performed by using the lever on the left (right) side of the
boiler. Cleaning is done by using the turbulators which are located in the main heat
exchanger.
Manufacturer is recommending to clean the heat exchanger walls atleast once a month.
6.8 Maintenance and inspection of the boiler
During the operation of the boiler it is necessary to pay attention if there are any
leaking tar or contamination to the air vents. Air valves must open and close smoothly.
Primary and secondary air flap is an important element of the boiler and must be
checked frequently and even the air ducts must be kept clean. If something prevented

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complete opening or closing the valve, it should be cleaned immediately. This may lead to the
achievement of the desired output of the boiler.
Never take the ceramic bricks outside of the boiler and check them visually after the
cleaning. There must be no clogging. The bricks might be demaged during the operation due
to temperature cycles. The changing of the brick is recommended after the worse operation of
the boiler overall.
Check the sealing cord on the door, if necessary it is needed to replace it.
It is recommended to periodically perform a visual inspection of the boiler.
7) Control unit SPARK
Pic. No. 7 Control unit PARK
7.1 Control unit PARK description
Boiler regulator PARK is a modern electronic device intended to control solid fuel
boiler:
-It automatically maintains desired temperature of the boiler by controlling the
combustion process
-It is controlling the exhaust fan speed
- Automatically maintains the set temperature of HUW.
- It automatically maintains preset temperature of several independent mixer heating
cycles up to maximal number of 5.
The preset temperature of heating cycles and boiler can be set on the basis of a
weather sensor readouts. Possibility of cooperation with room thermostats, separate for each
heating cycles facilitates maintaining comfortable temperature in the heated rooms. Moreover,
if need arises, the device enables a reserve boiler (gas or oil-fired). Regulator can cooperate
with an additional control panel situated in living quarters and with additional modul with the
lambda-probe. The device is operated in an easy and intuitive way.
7.2 Operation of the controller
The simular manual for operating of control unit is incluaded in package. To a oid any
problems, we ad ise you to read carefully the installation manual, before you start using it.
7.3 Installation of temperature sensors
CH temperature sensor

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This sensor detects the current water temperature in the boiler. This temperature is
shown on the red LCD control panel. Operating modes are set according to this value. The
sensor is connected to the boiler output to have the best possible contact and heat transfer. It is
either installed in a reservoir or it is taped to pipe. The brass part should have the best contact.
The wire must never come into direct contact with any element of heating system!
To ensure the accurate measurement of temperature, it is recommended to use thermal
grease.Oil must not be used as it can damage the sensor!
DHW temperature sensor
This sensor reads water temperature in the DHW tank. DHW pump start-ups and shut-
offs are initiated according to this sensor’s readings. It is either installed in a reservoir or it is
taped toa pipe. This sensor is set to OFF in the factory settings so, it must be set in the main
menu for use.
Emergency thermostat – thermocouple sensor
The independent thermocouple sensor protects the system against overheating. It
operates independently of the control unit and, when it detects temperatures above 90°C, it
will immediately shut the fan and the feeder down to prevent the burner from heating up any
further. The alarm will switch the control unit to OFF mode!After checking the system, the
user can press to switch the system to HEAT mode.
The first sensor is installed on the boiler’s hot water output. It is placed in the reservoir
or taped onto the tube with insulation. For the best results, remember that the wire must not be
in direct contact with the tubes!
The sensor is installed with the CH sensor!
Pic. No. 8 – Thermal sensor installation
CAUTION:
 The sensors must not be immersed in liquids such including water, oil, etc.
 During assembly and operation, the sensor cables must not come into contact with hot
pipes or other elements of the heating systém.