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