MCE AGROV2 User manual

revised edition 3, September 2021

CONTENTS
1. INTRODUCTION 4
2. GENERAL INFORMATION 4
2.1 Commercial versions of the AGRO V2 and AGRO V2S boiler series 4
2.2 Application 4
2.3 Fuel 5
2.4 Selection of a boiler for the heating system 5
3. TECHNICAL CHARACTERISTICS OF THE AGRO V2S BOILERS 6
3.1 Description of the construction of boilers 6
3.2 Safety and control fittings 7
3.3 Technical and operational data of boilers 10
4. BOILER INSTALLATION MANUAL 11
4.1 Transport of the boiler 11
4.2 Place of installation of the boiler 11
4.3 Room ventilation 11
4.4 Connecting the boiler to the chimney 12
4.5 Connecting the boiler to the heating system 12
4.6 Filling the boiler 15
4.7 Connecting the boiler to the electrical system 16
4.8 Connection and installation of the controller and blower to the AGRO V2 boiler. 16
4.9 Installing temperature sensors and emergency thermostat 16
4.10 Installation of the air draft regulator in the AGRO V2 boiler 17
5. OPERATION OF THE AGRO V2 and AGRO V2S BOILER 17
5.1 Firing up in the AGRO V2 and AGRO V2S boiler 17
Before starting the fire in the cold boiler, you should: 17
5.2 Continuous burning process in the boiler 18
5.3 Disturbances in boiler operation - before you call the service 19
5.4 Taking the boiler out of operation twenty
5.5 Maintenance of the boiler twenty
6. BASIC PRINCIPLES OF SAFE USE OF THE BOILER 21
7. WARRANTY TERMS 22
8. SERVICE CARD OF THE DEVICE 24
2

LIST OF FIGURES AND TABLES
1. FIG. 1 AGRO V2S boiler cross-section. 6
2. LYNX. 2 Diagram of the boiler installation in an open system in accordance with the existing
regulations 10
2. LYNX. 3 Diagram of boiler installation with the use of a four-way valve 11
3. TABLE 1. Basic technical and operational data of the AGRO V2 and V2S series boilers 7
4. TABLE 2. Disturbances in boiler operation - before you call a service technician 15
1. INTRODUCTION
The assembly and operating manual is intended to familiarize the user with the structure,
operation, installation and operation rules of the heating boiler type AGRO V2 and AGRO
V2S fired with solid fuel -non-wood biomass in the form of briquettes made of straw, hay,
miscanthus.
Before starting the installation and operation of the boiler, each user should read the manual
carefully. It contains recommendations for the correct handling and operation of the boiler.
Failure by the person installing the boiler and the user to follow the recommendations and
instructions contained in this manual may lead to the loss of warranty and pose a threat to
the health and life of people staying in the facility where the boiler operates.
2. GENERAL INFORMATION
Before installing the boiler, carefully read the documentation and check the completeness of
the boiler accessories and the elements and materials used for its assembly, both to the
central heating system and to the chimney.
2.1 Commercial versions of the AGRO V2 and AGRO V2S boiler series
V2 boilers are produced in the following commercial varieties:
● with the possibility of installing an air draft regulator for automatic control of the
water temperature in the boiler - commercial designation AGRO V2-10, AGRO
V2-15; AGRO V2-20; AGRO V2-25; AGRO V2-30,
●with a microprocessor controller controlling the operation of the blow-in fan and
central heating and domestic hot water pumps - commercial designation
AGROV2S-10, AGRO V2S-15; AGRO V2S-20; AGRO V2S-25; AGRO V2S-30,
2.2 Application
AGRO V2 and AGRO V2S boilers are intended for use in gravity or pump central heating
installations in single-family houses, service and commercial outlets, workshops, rural
households, etc., with a supply water temperature not exceeding 95°C. The boiler belongs
to the group of low-temperature water boilers and is not subject to registration at the
regional Office of Technical Inspection.
3

AGRO V2 and AGRO V2S boilers may only be used in open system installations secured
in accordance with PN-91 / B-02413 - Heating and heat engineering. Protection of open
system water heating installations. Requirements.
An example of a security scheme for an open water system heating system is shown
schematically in Figs. 2 and 3.
2.3 Fuel
•coal, wood (humidity <15%)
☝CAUTION:
It should be remembered that the use of unsuitable solid fuels while maintaining low exhaust gas
temperatures and the return water temperature below 500C leads to accelerated wear of the boiler and
reduces its efficiency. It is caused by the condensation of combustion products - with nitrogen and
sulfur, which, when combined with water, create an aggressive environment causing corrosion of
boiler components. In the absence of a chimney insert, the low temperature of flue gas and water on
the return from the heating system causes the condensate from the chimney to penetrate into the
building interior.
2.4 Selection of a boiler for the heating system
The basis for the selection of a boiler for the central heating installation is the heat
balance of heated rooms prepared in accordance with the PN-B-03406: 1994 standard -
"Heating. Calculation of heat demand for rooms with a cubature of up to 600 m3 ”by an
authorized building designer.
In the case of the estimated (approximate) method, the largest possible number of
potential factors affecting heat losses and heat gains in the facility should be taken into
account, so that the selected boiler power corresponds to the actual demand for thermal
energy.
It is recommended that the nominal power of the boiler is equal to the calculated heat
demand for the heated building. Then, even in extreme weather conditions (outside
temperature approx. -20°C) it is possible to provide thermal comfort in heated rooms.
The boiler should be selected depending on the heat demand of the building while
ensuring thermal comfort. The selection of the boiler power depends on many factors,
including wall thickness, building insulation, tightness of windows and doors, type of glass
used, as well as the climatic zone in which the building is located. Selecting a boiler with
too much power will result in higher fuel consumption and higher operating costs, while a
boiler with too low power will not meet the expectations and will not provide thermal
comfort.
4

The estimated selection of the boiler heating power can be based on the formula:
𝑄𝑘𝑜𝑡𝑎 = 𝐹𝑂𝐺𝑅𝑍 ∗ 𝑞
- boiler heating power [kW]
𝑄𝑘𝑜𝑡𝑎
-heated area [m2]
𝐹𝑂𝐺𝑅𝑍
-unit heat demand [kW / m2]
𝑞
3. TECHNICAL CHARACTERISTICS OF THE AGRO
V2S BOILERS
3.1 Description of the construction of boilers
The AGRO V2S series boilers (Fig. 1) are a welded structure. The internal walls of the
boiler water body are made of 6 mm thick P265GH steel sheets. The walls are reinforced
with rod and tubular anchors.
The furnace chamber is built in the shape of a cuboid. The bottom of the furnace chamber
is closed with a water grate made of thick-walled "boiler" pipes. Above the furnace
chamber there is a convection section of the boiler with four horizontal shelves, forming
the flue gas ducts, which discharge the flue gas to the boiler flue with the flue gas throttle
located on the rear wall of the boiler.
The fuel to the boiler is manually fed through the charging door. The grate and the furnace
chamber are operated through the furnace door.For periodic cleaning and shaking of the
grate, a grate reel is operated by a lever on the side wall of the boiler.
The air for fuel combustion is forced by a radial fan, a rectangular air duct into the ash
pan, from where it is distributed to nozzles located in the side walls of the combustion
chamber (secondary air) and under the grate into the combustion zone (primary air).
Alternatively, the operation of the AGRO V2 boiler in manual mode with air suction by the
chimney draft can be monitored by the draft regulator. In this version, a rectangular air
damper is mounted on the ash-pan door. The throttle cover is equipped with a handle for
mounting the draft regulator rod mounted in the stub on the front wall of the boiler. The air
is sucked in by the chimney draft (through the throttle in the furnace door), to the ash pan,
from where it is distributed to the secondary air nozzles and under the grate (primary air).
The boiler is equipped with connectors:
▪ supply and return R1½ "of heating water,
▪ drain connection G½ ",
▪ connector for mounting the G½ ”thermometer,
▪ sensor wells of the temperature controller and the safety temperature limiter.
5

▪ in the AGRO V2 version, a G¾ draft regulator connector,
On the front wall of the boiler, there are ash pan, furnace and charging doors as well as
cleaning doors, enabling cleaning of the convection surfaces of the boiler.
The water body is covered with a heat-insulating material placed in a steel sheet mantle.
The operation of the AGRO V2S boiler in the automatic mode with air supply from the fan
is supervised by an electronic regulator. In emergency states (overheating of water in the
boiler), the controller automatically stops the boiler operation. Restarting is carried out in
automatic mode (depending on the type of controller used. Not every manufacturer offers
the possibility).
The technical and operational parameters of the AGRO V2 and AGRO V2S series boilers
are presented in Table 1.
3.2 Safety and regulating fittings
Boiler temperature controller- ensures economical and automatic operation of the
entire central heating and domestic hot water system. Depending on the fuel used, the
regulator enables the fan power to be set (providing the right amount of air to the
furnace). The regulator can operate in two modes: WINTER and SUMMER. In the winter
mode, operation is carried out with the central heating circuit and the domestic hot water
circuit, and in the summer mode, only with the domestic hot water circuit.
The DHW TEMPERATURE parameter sets the set DHW tank temperature. After the set
temperature is reached, the DHW tank loading pump will be turned off.
The CH PUMP ON TEMPERATURE parameter determines at which temperature of water
in the boiler the circulation pump will be activated. The switch-off temperature of this
pump is 20C lower than the switch-on threshold (according to the controller manual).
Safety thermostat- protects the heating system against overheating. The thermostat
temperature is factory set to 950C, i.e. higher than the maximum temperature that can be
set on the boiler thermostat. After the airflow is turned off by the safety thermostat (an
alarm is displayed on the regulator), it must be unblocked manually. The circulation pump
continues to run after the safety thermostat has been triggered. If the boiler is switched off
repeatedly by the safety thermostat, the boiler must be turned off and the cause of
repeated overheating of the boiler should be found.
Draft regulator- In an alternative version, it regulates the inflow of air necessary for the
combustion process.
By setting the selected temperature on the knob, the regulator will close the air supply flap
after the boiler reaches the temperature set on the regulator. After the temperature in the
boiler drops, the air flap in the ash pan door opens, increasing the air supply.
Circulation pump- works after the boiler reaches the set temperature (450C as standard)
until the temperature drops by 40C below the pump activation temperature (according to
the controller manual).
6

Fig. 1. Cross-section of the AGRO V2S boiler 15 kw 20kw 25kw 30kw
1. thrust regulator connector ¾ "
2. channel cleaning door
3. charging door
4. hearth door
5. ash-pan door
6. flue, exhaust outlet to the chimney
7. steel body with thermal insulation
8. water grate
9. return connection 1 ½ "
10. steel toothed scraper with a lever
11. safety valve connector ¾ "
12. drain valve connection ½ "
13. dial thermometer
14. air flap
15. exhaust throttle
16. microprocessor controller
17. supply connection 1 ½ "
18. fan
7

Fig. 2. Cross-section of the AGRO V2S 10 kw boiler
1. sewer cleaning door 2. charging door 3. flue, exhaust outlet to the chimney
4. exhaust gas throttle 5. water grate 6. toothed steel scraper with a lever 7. steel body with
thermal insulation 8. return connection 1 ½ "9. supply connection 1 ½" 10. drain valve spout ½ "11. safety
valve connection ¾ "12. Microprocessor controller. 13. Dial thermometer. 14. air damper
8

3.3 Technical and operational data of boilers
SPECIFICATION
Jm
BOILER MARKING
AGRO V2
AGRO V2
AGRO V2
AGRO V2
AGRO V2
Rated heat output of the boiler
kW
10
15
20
25
30
Boiler thermal power range
kW
4 ÷ 12
8 ÷ 15
15 ÷ 20
20 ÷ 25
25 ÷ 30
Boiler heating surface
m2
1.36
1.65
2.15
2.65
3.2
The area of heated rooms
M2
50 - 120
70 - 150
140 - 200
180 - 250
240 - 300
Thermal efficiency
%
79-84
Boiler class according to PN-EN 303-5:
2005
-
1
Fuel
Non-wood biomass in the form of briquettes made of straw, hay,
miscanthus
Maximum allowable working pressure
MPa
0.15
The required exhaust draft
Bye
twenty
22
23
26
28
Flue gas temperature at rated power
0C.
250
Flue gas temperature at minimum power
0C.
105
Boiler operating temperature range
0C.
55 - 90
Maximum water temperature
0C.
90
Minimum return temperature
0C.
55
The minimum height of the chimney
m
The height and cross-section of the chimney should be
calculated based on
applicable Polish standards. (see point 4.4 of further manual)
The minimum cross-section in the light of
the flue pipe
mm2
Flue dimensions
mm
127
160
160
180
180
Supply voltage (*)
V
230V / 50 Hz
Electrical power(*)
In
80
Supply and return diameter
G 1 ½ "
Boiler weight without water
kg
200
250
300
350
400
Water capacity
l
38
45
56
74
83
One-time charge weight
kg
18
22
thirty
45
57
Height*
H
.
mm
1275
1260
1330
1330
1330
Height from the base to the axis of the
flue
H
1
mm
1015
1015
1095
1095
1095
Length
A
N
D
mm
780
770
815
865
920
Width
B
mm
460
500
500
550
600
The depth of the combustion chamber
C
.
mm
240
300
340
390
440
* DIMENSION WITHOUT FAN. WHEN MOUNTING THE MPLUSM WPA 120K FAN, ADD 180 mm TO THE DIMENSION
(*)- applies only to the commercial version of the AGRO V2S boiler
TABLE 1. Basic technical and operational data of the AGRO V2 and AGRO V2S series boilers
9

4. BOILER INSTALLATION MANUAL
The boiler is delivered assembled, with additional accessories attached, which must be
connected to the installation when installing the boiler. Before starting the installation of the
boiler, check that the set is complete and undamaged. The data on the boiler's rating plate
must agree with the data in the boiler's documentation.
☝CAUTION:
All work related to setting the boiler, boiler room equipment, connecting the boiler to the installation
and possible repairs should be entrusted to an installer with appropriate knowledge, qualifications and
experience. Proper performance of the above-mentioned works is essential for the safe operation of the
boiler, correct operation of the boiler and central heating system, and user satisfaction
The boiler installation should be performed in accordance with the assembly manual, and the
installations to which the boiler will be connected should be efficient and made in accordance with the
relevant designs.
It is recommended that the installation of the boiler is entrusted to a qualified installer.
4.1 Boiler transport
The AGRO V2 and AGRO V2S boiler is transported on a wooden pallet and packed with
plastic foil. The boiler should be transported in an upright position in a manner that
protects it against mechanical damage. The boiler must be protected against the harmful
effects of weather conditions.
The boilers must not be stacked during transport and storage. Loading and unloading
should be performed with due care. In order to move the boiler in the warehouse and in its
destination, forklifts must be used. Moving should be done carefully and slowly to prevent
the boiler from tipping over. It is forbidden to hit the boiler, overturn or subject it to violent
shocks. Unpacking the boiler may only be performed at the place of destination,
immediately prior to assembly into the system.
4.2 Place of installation of the boiler
According to NormPN-87 / B-02411 "Built-in solid fuel boiler rooms" and in accordance
with the Regulation of the Minister of Infrastructure of April 12, 2002 (Journal of Laws of
2002 No. 75, item 690) on technical conditions to be met by buildings - boiler for solid fuel
should be installed in a separate room, boiler room (e.g. basement, room on the ground
level or the level of heated rooms - rooms in the latter case only up to 25 kW).
The boiler should be placed on a fireproof base, the dimensions of which must exceed the
boiler base by at least 500 mm on the front side of the boiler and 100 mm on the other
sides.
It should be located in such a way that there is free access to the boiler, which is
necessary for proper operation and cleaning of the boiler. The bearing capacity should be
appropriate to the weight of the boiler together with water. The immediate surroundings of
the boiler, i.e. walls and ceiling of the room, should be made of non-flammable materials.
10

4.3 Room ventilation
The room where the boiler is placed should have gravity ventilation ducts (without
shutters):
 air supply - an opening in a window or wall with a cross-section not smaller than
200 cm2 (for boilers up to 25 kW) or 20x20 cm (for boilers over 25 kW)
exhaust - an opening, if possible, located at the chimney under the ceiling of the
room, with a cross-section not less than 14cm x14cm.
☝CAUTION:
It is forbidden to use mechanical exhaust ventilation in the room where the boiler is installed.
4.4 Connecting the boiler to the chimney
Chimney flues should be made in accordance with the requirements of PN-87 / B-02411
and PN-89 / B-10245 "Smoke, exhaust and ventilation pipes made of brick. Requirements
and tests upon acceptance ”and the Ordinance of the Minister of Infrastructure of April 12,
2002 (Journal of Laws No. 75).
The boiler flue should be connected to the chimney by means of a flue gas connector
made of steel sheet, which should be placed over the outlet of the flue, embedded in the
chimney and sealed. The fastener should rise slightly upwards (minimum 1%). If, for
construction reasons, the boiler flue has a length exceeding 400 mm, it is recommended
to insulate the flue with thermal insulation.
The chimney should provide adequate draft for the correct operation of the boiler. The
required chimney cross-section should be recalculated by the designer and depends on
the height of the chimney, type (brick, steel), boiler power and fuel type. Steel chimneys
should be 15-20% higher than brick chimneys, and if they are not thermally insulated,
their cross-section should be 20% larger.
☝CAUTION:
The values of the required flue gas draft for individual sizes of boilers should be supported
by the designer with calculations and selection of the chimney duct parameters
(cross-section and height), taking into account climatic zones and terrain conditions.
The chimney to which the boiler is connected must be tight and free from other
connections. It is recommended to insulate the chimney with thermal insulation.
The boiler flue should be connected directly to the chimney. If it is impossible for some
reason, use a suitable fitting made of steel sheet, approx. 2 mm thick, rising slightly
upwards from the boiler to the chimney. The connection should be sealed and insulated
from the outside with mineral wool. The dimensions of the fitting should enable it to be put
on through the flue.
☝CAUTION:
 Before connecting the boiler, it is recommended to consult the chimneyarza
 The boiler must be connected only to a separate chimney duct ensuring the required draft.
 The technical condition of the chimney to which the boiler is to be connected should be
assessed by a chimney sweep.
11

It is recommended to prepare a construction design of the boiler room and heating system
with the aerodynamic calculations of the flue gas exhaust system.
4.5 Connecting the boiler to the heating system
Central heating installations, depending on the object, may differ from each other,
therefore the place and method of connecting the boiler should be in accordance with the
guidelines in the design
An exemplary diagram of properly made protections for an open-source water heating
device is shown in Figs. 2 and 3.
The water installation of the boiler should be made in accordance with the PN-91 /
B-02413 standard and the BN-71 / 8864-27 standard. Deviations from the
above-mentioned standards, irrespective of the threats to work and service safety, may
cause serious boiler failures, which may result in the loss of the warranty. If for any reason
it is necessary to build an installation containing such deviations, it is absolutely
necessary to present such an installation for acceptance and periodical inspections to the
competent inspectorate of the Office of Technical Inspection. In the latter case, it is very
important to absolutely exclude the possibility of water pressure increase in the system
above the value of the maximum operating pressure of the boiler, even during the
tightness test of the system.
☝CAUTION:
1. The boiler may only be connected to a heating system of the gravity type or with forced water
circulation, in an open system.
The installation in which the boiler will operate must meet the requirements of the Polish Standard
PN-91 / B-02413 regarding the protection of water heating installations of an open system.
2. The boiler cannot be connected to a heating system made of plastics.
In order to connect the boiler with the heating system, perform the following works:
 connect the return pipe from the installation with the boiler return stub pipe using a
threaded joint - a flare nut,
 connect the system supply pipe with the boiler feed pipe using a threaded joint - a
screw connection,
 check and install boiler accessories,
 connect the water supply to the heating system and the boiler.
Remember to properly seal the threaded connections with materials intended for this
purpose, and to plug all unused stubs.
☝CAUTION:
In order to protect the boiler against returning to the exchanger from the water system with a
temperature below 500C, it is recommended to use a heating system with mixing and adjust the
parameters of the heating medium through a mixer or a coupling without interfering with the boiler
operating parameters. Such systems combine two functions:
 they mix hot water from the supply with cooler return water and make it possible for the heating
circuit to do so very smooth control of the heating water temperature in relation to the needs of
the heating system,
 protect the boiler against low-temperature corrosion and increase the efficiency of domestic
water heating in the domestic hot water tank (if such is installed in the system and connected to
12

the boiler circuit).
This allows to increase the efficiency of the system and the service life of the boiler.
LYNX. 2 - Diagram of the boiler installation in an open system in accordance with the existing regulations
(without mixing)
13

LYNX. 3. Diagram of boiler installation with the use of a four-way valve
4.6 Filling the boiler
It is recommended to use soft water for filling the boiler (hardness not higher than 7 pH),
without any mechanical impurities. Possible use of chemicals for water in the heating
system in accordance with the recommendations of the manufacturers of the agents.
14

Water and materials in contact with water must comply with the PN-93 / C-04607
standard.
Water supply can be done through a drain cock mounted on the boiler drain stub, e.g. with
a flexible hose, which, after filling the system, disconnect it from the boiler until the
overflow is obtained from the signal pipe of the expansion vessel and the boiler drain cock
is closed. It is recommended to make a connection for filling the system and filling losses
in the system by means of a permanent connection, provided that the connection is
equipped with a non-return backflow preventer to prevent the backflow of water from the
heating system and shut-off valves (preferably with a pressure hose).
☝CAUTION:
Water quality significantly affects the durability of the central heating installation in this boiler.
If, for any reason, there is a lack of water in the boiler-system system, it is not allowed to refill the
system with cold water. Cool down the boiler as soon as possible to 30oC (remove burning fuel if
necessary) and only after the boiler has cooled down, refill water and start firing up from the
beginning. The inflow of cold water to the boiler walls when they are hot may result in the destruction
of the boiler. In extreme cases, it can result in damage to buildings and injuries to people.
Improper insulation / insulation / expansion vessel / overflow / can also cause the boiler to
explode with all negative consequences.
The water frozen in the expansion vessel breaks the connection of the central heating
system and the boiler with the atmosphere, and when the boiler water temperature
increases, the pressure in the system increases in an uncontrolled manner, which in turn
may lead to an explosion of the boiler.
4.7 Connecting the boiler to the electrical system
The boiler room should be equipped with a 230 / 50Hz electrical installation in accordance
with the applicable regulations. The installation, regardless of its type, should be
terminated with a plug-in socket equipped with a protective contact. Using the socket
without the PE protective terminal connected may result in an electric shock.
The electrical installation may only be connected by an electrician with valid licenses. Any repairs to
the boiler's electric power supply may only be performed with the fuse disconnected from the power
supply.
4.8 Connection and installation of the regulator and blower to the AGRO V2
boiler.
In order to install the fan on the upper casing of the boiler, unscrew the plug of the blower
duct, then install the fan in accordance with the manufacturer's instructions. Then
dismantle the air damper system in the ash pan door and fix the dismantled plug from the
upper part of the boiler with screws. This treatment will prevent the ash from escaping
from the ash pan when the fan is started.
The regulator should be installed in accordance with the manufacturer's recommendations
on the upper casing of the boiler, using sheet metal screws no longer than 10 mm.
15

4.9 Installation of temperature sensors and an emergency thermostat
The sensors should be installed in led out capillaries in the upper part of the boiler. In this
case, the measured temperature will faithfully correspond to the temperature of the water
in the boiler. The sensor should be mounted so as to ensure the best possible contact of
the sensor with the inner surface of the tube intended for its installation.
DHW sensorplace inside the boiler in a special measuring well.
☝CAUTION
The temperature sensors and the emergency thermostat should not be flooded with oil, water or other
liquids. Conductive silicone pastes can be used to improve contact. Do not put nails or other metal
objects into the sensor and thermostat
4.10 Installation of the air draft regulator in the AGRO V2 boiler
In order to assemble the draft regulator it is necessary to:
1. Screw the thread (tapered 3/4 ") into the stub pipe - sleeve on the front wall of the
boiler, the connection should be tight and ensure proper orientation. The draft
regulator must be installed in such a way that the reference point with the arrow
points upwards (the lever from the bottom of the regulator ).
2. Put the lever in the place of the plug, move it to the side so that the chain is in line
with the catch on the air damper in the ash pan door of the boiler and lock it (with a
locking screw). The arm with the chain should point slightly downwards (approx.
2-5O).
5. AGRO V2 AND AGRO V2S BOILER OPERATION
5.1 Firing up in the AGRO V2 and AGRO V2S boiler
Before starting the fire in the cold boiler, you should:
⬥check if the central heating system is properly filled with water - until it flows out of the
expansion vessel with the RS signal pipe (Fig. 3) and that the water in the system is
not frozen.
⬥check whether the remains of unburned fuel and ash remaining after the previous use
of the boiler have been cleaned and that the ash has been removed from the ash box.
Then you need to:
 apply a kindling layer in the form of wooden flaps through the fire door, set fire to it and
turn on the fan on the boiler operation regulator. Gradually sprinkle firewood on the
burning wood.
 During the fire-up period, close all doors, set the chimney draft control throttle in the
flue to the fully open position (set the throttle axis along the flue).
 When the layer of fuel is well ignited, it should be leveled over the entire grate surface
and then, through the charging door, load the boiler chamber with fuel.
 As soon as the required temperature of water in the boiler is obtained, the intensity of
combustion should be adjusted. During normal operation of the boiler, it is necessary to
periodically inspect and refuel as described above.
16

 One-time charging of the boiler depends on the type of fuel. Before each charging of a
new portion of fuel to the boiler, ash from the grate and remove the slag from the
furnace.
 In order to use fuel economically, the furnace chamber and boiler convection channels
should be kept clean. The walls and the grate in the furnace chamber should be
cleaned through the charging and furnace doors. Convection channels and the flue
should be cleaned through the upper door of the boiler. Cleaning should be performed
with the use of generally available tools (wire brush, scraper). The above-mentioned
activities should be performed during the boiler's periodic standstill. Thorough cleaning
of the boiler should be performed once a month, when burning lower types of fuel,
these activities should be performed more often.
In the event of any disturbances in the operation of the boiler (excessive increase in
water temperature, intense smoke escaping into the boiler room, etc.), pull the heat
from the furnace through the furnace door (with the damper closed) to a metal
container, which should be taken outside. The boiler room should be intensively aired
during this time, and the boiler operator should be insured by a second person outside
the boiler room.
A detailed description of the temperature control can be found in the regulator
manual attached to this manual (for the AGRO V2S boiler)
☝CAUTION:
Before loading fuel or clearing the grate, it is absolutely necessary to turn off the blower and exercise
particular caution. After a few seconds from turning off the fan, open the ash pan door and only after
a few seconds the loading door. This avoids an "explosion of exhaust fumes". When opening the
door, do not stand in front of the boiler and do not look into the furnace chamber while the boiler is
operating. It may cause burns.
5.2 Method of adjusting the draft regulator
In the AGRO V2 version of the boiler adapted to the installation of a draft regulator, after
setting the knob to 700C, insert the lever in the place of the plug, move it to the side so
that the chain is in line with the catch on the air flap in the ash pan door of the boiler and
lock it (with a locking screw). The arm with the chain should point slightly down (approx.
2-5O),
The adjustment consists in changing the length of the chain:
Set the knob to 700C,
Fire up the boiler by manually opening the boiler draft door,
When the water temperature reaches 700C and it stabilizes, attach the chain to the
boiler draft door in such a way that, with the chain tightened, the door remains open
for about 1mm (the excess chain can be cut off).
☝CAUTION
⬥When firing up a cold boiler, vapors may condense on the walls of the boiler. In such a case, the
boiler should not be put out of operation, but used further, which will result in the disappearance
of the phenomenon. In the case of a new boiler, depending on the weather conditions and the
temperature of the water in the boiler, the above phenomenon may last several days.
⬥If there is any suspicion that the water in the system may freeze, before firing up the boiler, check
the safety pipes leading to the expansion vessel for patency. For this purpose, water should be
added to the boiler until an overflow is obtained through the signal pipe from the expansion
17

vessel. If the safety pipes are not obstructed, it is forbidden to light the boiler.
5.2 The process of continuous burning in the boiler
During normal operation of the boiler, it is necessary to periodically inspect and refuel.
Before loading the next portion of fuel, you should rake the grate (using a scraper, a lever
on the side of the boiler). Refueling consists in pouring an appropriate portion of it into the
combustion chamber through the loading door.
It is recommended to operate the boiler above the temperature of 60°C. Long-term
combustion at low temperatures causes flue gas condensation and faster boiler corrosion
as well as precipitation of a large amount of tar from the fuel, which causes rapid tar
fouling of the chimney and the boiler water body. Symptoms of such a state of affairs are:
smoke leaking outside and "boiler explosions". In order to remedy this, it is necessary to
clean the flue gas ducts and the surfaces of the water jacket of the boiler more often, as
well as the chimney and the flue.
☝CAUTION:
When opening the charging door, be especially careful, as an explosive ignition of gases (fuel
degassing products) may occur if they are opened suddenly. When opening the charging door,
stand to the side of the boiler, slightly open the door, wait a moment until the exhaust gases are
drained from the fuel container into the chimney, and then slowly open it completely. Also then, do
not stand in front of the door opening. A similar principle should be adopted when opening the
remaining doors while the boiler is in operation.
5.3 Disturbances in boiler operation - before you call the service
☝We remind you that in the event of an unjustified service call, the customer covers the costs of
arrival and work of the service unit. Before you call for help from the factory service, please familiarize
yourself with the following most common disturbances in the operation of the boiler, which are the
result of improper installation of the boiler or incorrectly designed central heating installation.
SYMPTOMS
CAUSE
METHOD OF DELETION
Water (leak) is coming
out of the boiler during
the first start-ups
The so-called boiler sweating
(condensation)
Fire up in the boiler and obtain the temperature
above 80ºC and maintain it for min. 6-8 hours,
repeat if necessary. Reduce heat consumption
Smoke is coming out of
the charging or ash pan
doors
Blocked chimney or channels in
the boiler
Check the chimney patency and its parameters.
Improper connection of the boiler
to the chimney
Check the connection between the boiler and
the chimney.
Residual fuel has got under the
hinge or sealant
Check the cord / sealant that seals the door
The desired temperature
cannot be obtained on
the boiler
Incorrectly selected boiler power
(size)
Calculate the heat demand carefully, in
accordance with the design and select the
correct size of the boiler - replace the boiler.
Fuel calorific value too low
Poor quality of fuel, e.g. high ash content with
low melting point, low calorific value - inferior
fuels should be burned in warmer periods, when
lower efficiency is required.
18

Insufficient chimney draft
Any leaks in the chimney, flue, boiler door or
cleaning openings should be checked and
removed - clean the chimney
Contamination of the convection
surfaces of the boiler
Clean the boiler convection channels.
Sudden increase in
temperature and
pressure in the boiler
Frozen vessel, circulation pump
failure
Check safety tubes for obstruction. Insulate the
expansion vessel
Too little water in the system.
Check the amount of water in the installation
"Explosions" in the
boiler
The occurrence of the so-called
"Boiler explosions" is related to
the lack of patency of the
convection channels and the
chimney.
Cleaning the boiler and chimney, sealing the
walls of the chimney.
Excessive water
temperature in the boiler
Closed valves. No heat is drawn
off. Open air supply.
Open the valves. Close the air damper.
TABLE 1. Disturbances in boiler operation - before you call a service technician
☝CAUTION:
In the event of disturbances in the operation of the boiler - the necessity of its emergency shutdown
(excessive increase in water temperature, intense smoke escaping into the boiler room, etc.),
disconnect the voltage supplying the fan and the boiler controller, through the furnace door, pull the
heat out of the furnace into a tin container, which should be taken outside. The boiler room should be
intensively aired during this time, and the boiler operator should be insured by a second person
outside the boiler room. Only after the boiler and heating system have cooled down, should the
diagnosis of the causes of the failure begin.
5.4 Taking the boiler out of operation
After the end of the heating season or in other cases of the planned shutdown of the
boiler, the fuel portion filled in to the furnace should be burned out, and after the boiler has
expired and cooled down, the remains of the fuel should be removed from the furnace
and ash pan. Then perform a visual inspection of the boiler (inside and outside) and
accessories, and then carry out maintenance activities.
☝CAUTION:
Water should not be emptied from the system unless there is a clear need (such as the need to
eliminate leaks). Water should be in the system all year round because it effectively protects the boiler
and the installation against corrosion (from the inside). The exception to this rule is a break in heating
during frost.
5.5 Boiler maintenance
Each summer break in the boiler operation should be used to protect the device against
excessive wear and tear and prepare it for operation in the next heating season. To
achieve this goal:
 thoroughly clean the grate, furnace, ash pan, convection channels and the boiler
flue,
19

 clean the external surfaces of the boiler and associated devices, fill in any losses of
anti-corrosion coatings and, if necessary, make them anew.
Preserve the internal surfaces of the combustion chamber and convection
channels with a thin layer of oil and graphite
 In order to obtain economical fuel consumption, the furnace chamber and boiler
convection channels should be kept clean. In the furnace chamber, clean the walls,
the grate deck through the charging door and the furnace and ash-pan doors.
Convection channels and the flue should be cleaned through the boiler cleanout,
and the dirt removed through the ash pan.
The channels should be cleaned with wire brushes on extension cords and various
types of scrapers and steel spatulas. The above activities should be performed
while the boiler is in standstill. Thorough cleaning of the boiler should be performed
at least once a month, while burning inferior types of fuel (containing a larger
amount of ash), these activities should be performed more often.
20