Megatherm MPB 90 Pro Instruction Manual

Megatherm wood-pellet burner MPB 90 Pro
Wood pellet burner
MPB 90 Pro
Installation & User
Manual
This manual is for the Installer. Read, understand, and follow these instructions for safe installation and operation.
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Megatherm wood-pellet burner MPB 90 Pro
Contents
1. Warnings, Cautions, and Notes...................................................... 3
2. The principle of working .............................................................. 4
3. Technical specifications ................................................................ 5
4. Boiler .......................................................................................
5. Chimney ..................................................................................
. Description of the controller ........................................................ 7
7. Operation functions ................................................................... 9
8. Parameter's .............................................................................. 11
9. Manufacturer's menu .................................................................. 14
10. Room thermostat ....................................................................... 18
11. First use .................................................................................. 19
12. Start of the burner .................................................................... 19
13. Stop of the burner .................................................................... 19
14. Cleaning burner's chamber ......................................................... 20
15. Restart the burner after an error ................................................. 21
1 . Feeder's filling rocedure ............................................................. 21
17. Self cleaning system ................................................................. 22
18. Burner's safety systems ............................................................. 22
19. Errors ...................................................................................... 23
20. Electrical diagram ...................................................................... 24
21. Warranty .................................................................................. 25
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MPB Pro Wood Pellet Burner Installation Manual - November 2015 - Version 3
Megatherm rreserves the right to change part or parts of this manual at any time without prior notice

Megatherm wood-pellet burner MPB 90 Pro
1. Warnings, Cautions, and Notes
3
Read the safety instructions carefully before
installation. Always follow the safety
instructions during installation and during
maintenance
Installation, operation, service, and other
work must be carried out by qualified
personnel in accordance with local codes and
regulations.
All electrical installation and service work
shall be done by certified and qualified
personnel inaccordance with local codes and
regulations.
Do not perform electrical work unless you
have the required qualifications. Perform a
complete burner shutdown and disconnect
the power supply prior to performing any work
on the burner. Observe all guidelines with
respect to installation, service, or cleaning.
Children and adults should be alerted to the
hazards of high surface temperatures and
should stay away to avoid contact to skinand /
or clothing.
Always follow the instructions for operations
and service.
Only wood pellets are to be
used with this burner. No
other fuel is to be used in
the burner.
NEVER BURN ANY TYPE
OF CORN, CHERRY PITS, STICKS OR
OTHER TYPES OF FUEL IN THE
BURNER.
Burning wood pellets according to
recommendations and the specifications set
forth will assure longer burner life and lessen
potential maintenance issues.
There is a risk of burn from touching the
equipment during operation.
The burner casing, burner body, flange, and
flame trap pipe are hot surfaces during
operation. Keep children away and do not
touch the equipment during operation.
DO NOT install in a
sleeping room.
DO NOT connect to any air
distribution duct or
system.
DO NOT terminate the vent
in any enclosed or
semi enclosed area, such as; carports,
garage,
attic, crawl space, under a sun deck or porch,
narrow walkway or closed area, or any
location
that can build up a concentration of fumes
such
as a stairwell, covered breezeway etc.
Young children should be carefully supervised
when they are in the same room with the
burner.

Megatherm wood-pellet burner MPB 90 Pro
2. The principle of working
The principle of work of MPB 90 Pro burner is based on providing fuel via steering the
feeders appropriately and the work of a fan which steers the burning process. The MPB Pro
burners are supplied with 2 feeders:
The
st
feeder (external feeder), which supplies wood pellet from the storage tank to the
burner
The 2nd feeder (internal feeder) which drives the wood pellet to the burner's fire
chamber. The operation of the internal feeder is depended on the external feeder's
operation time. The parameter “FEEDER MULTIPLIER” is used to set the operation time of
the internal feeder regarding the operation of the external feeder.
MPB Pro burners have 3 ways of operating:
Single mode: The burner reaches the desired “HEATING WATER TEMPERATURE “(i.e 65
o
C)
and burns off. Then, it starts its operation again when the temperature of the boiler goes
down to the temperature “HEATING WATER TEMPERATURE - CH FURNACE HYSTERESIS”
(i.e 65
o
C- 0
o
C=55
o
C) . The “CH FURNACE HYSTERESIS” must be more than 0
o
C
Continuous mode: The burner reaches the desired “HEATING WATER TEMPERATURE “ and
goes down at 3kW (maintain).When the boiler's temperature goes down to the temperature
“HEATING WATER TEMPERATURE - CH FURNACE HYSTERESIS” (i.e65
o
C-3
o
C=62
o
C) , the
burner increases its power from 3kW (maintain) to the maximum burner power (i.e30kW).
The “CH FURNACE HYSTERESIS” must be no more than 5
o
C
Analogue mode: The burner reduces its power /3 (for example: from 50kW to 00kW)
0
o
C before the furnace reaches the “HEATING WATER TEMPERATURE “. When the
temperature of the furnace is 5
o
C before “HEATING WATER TEMPERATURE “, the burner
reduces its power again /3 (for example: from 00kW to 50kW).
It is also possible to stipulate the working mode of the WUW pump with a priority or
without it. The driver enables the control of the furnace's work thanks to the room
thermostat. It is possible to steer the heating in relation to the actual temperature in the
room. The regulator is also equipped with the self-control systems (detecting the
malfunction of the temperature's sensors) and mechanisms monitoring the furnace's work
preventing from going beyond the range of safety for the installation of the central heating.
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Megatherm wood-pellet burner MPB 90 Pro
3. Technical specifications
Type
MPB 90 Pro
Heat outup
40-90kW
34,400-77,400Kcal
Maximum pellet consumption 8-18kg/hr
Lenght
(total
)
745mm
Width
270mm
Height with feeding pipe 360mm
Height without feeding pipe 290mm
Diameter
Φ180
mm
Power supply
230
Volt / 80Hz
Average power consumption
50-60
Watt (approx.
)
Fuel Wood pellet
φ
6-8mm, hymidity <10%
Weight
27kg
Fedder's length
1.5m
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Megatherm wood-pellet burner MPB 90 Pro
4. Boiler
It is important to check that the combustion chamber in the boiler is big enough to ensure
that the flame does not come in contact with the water-cooled walls. Verify that the boiler’s
capacity range complies with the burner. There must be enough space for the ash to
accumulate. The exhaust gas channels should not be so narrow that they can easily be
clogged with ash.
The distance between the front edge of the burner and the rear part of the combustion
chamber should be at least 800mm for the PB 150 Pro and 170mm for the PB 250 Pro
burner.
The minimum distance to the bottom of the fireplace depends on the boiler design.
There must be enough space for the quantity of ash build up that is created during at least
one week’s use in the winter heating season.
5. Chimney
We recommend that you have a local chimney sweeper or other corresponding authority
make an inspection and provide advice and instructions on the chimney measurements in
accordance with local codes and regulations.
The chimney should then of a length and diameter that gives a draught of 15 - 35 Pa.
easures have to be taken if the chimney is smaller or much larger in diameter in order to
give the proper draught and flow.
If there is not enough draught in the chimney, exhaust gases stack in boiler's combustion
camber or in the chimney with the risk of explosion. Also, gas flow into the boiler's room
can happened.
Always check the exhaust gas temperature. Directly after the boiler it should be
from 160° C to 250° C.
Too high a temperature can damage the chimney and is not economical.
Too low a temperature, a very high chimney, or a large chimney diameter creates a risk for
condensation that can cause corrosion and damage due to freezing.
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Megatherm wood-pellet burner MPB 90 Pro
6. Description of the controller
Description:
Diodes signalising the status of outputs and the working mode of the driver,
LCD screen used for communication between the device and the user,
Buttons steering the driver's work.
6.1 DESCRIPTION OF BUTTONS:
Πλήκτρο Λειτουργία
1Changes the burner's working mode – “STOP”, “IGNITION”,
“AUTOMATIC WORK”.
2eturn to the previous menu
1Entry on the Menu's parameters
2Saves the change of a parameter
1In the Ignition MODE activates the feeder for the time specified on the
parameter “Filling Feeder Time”
2•Go to the previous menu or parameter
•Decreases the value of a parameter
1•In the Ignition MODE activates the ignition procedure
2•Go to the menu menu or parameter
•Increases the value of a parameter του καυστήρα.
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Megatherm wood-pellet burner MPB 90 Pro
6.2 TECHNICAL CHARACTERISTICS OF THE CONTROLLER
Sensors: KTY-210
Measurement range: 0 – 120 °C
Measurement resolution: 0.1 °C
Time of measurements: 1 s
ata's reading: LCD screen 2x20 signs
Steering outputs:
• Igniter: ~230V 2A (0.8A
• External Feeder: ~230V 2A (0.8A)
• Internal Feeder: ~230V 2A (0.8A)
• Burner's fan: ~230V 2A (0.8A
• CH pump: ~230V 2A (0.8A
• Thermostat 2 contacts (open/close
max. 24V 2A
Protection:
• Temperature STB (95°C
• Electric Fuse 6A
Inputs:
• Room thermostat: Open contact
• Temperature sensors: KTY-210
Visual signalling:
• LED diodes Signalling the status of
outputs
• LCD screen Messages,
measurements, settings
Power supply: ~230 V 50Hz 2VA
Working temperature: 5°C - 50°C
Casing protection: IP20
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Megatherm wood-pellet burner MPB 90 Pro
7. Operation functions
After switching the driver on, on the LCD screen appears the program's logo defining the
type of the driver, current version of software and the manufacturer's logo.
While activating, the driver carries out a test of the connected sensors. In case of one
lacking, on the screen appears an appropriate message ---). The work of the driver
without a heating water temperature sensor CH) is blocked and an emergency mode is
activated CH pump is still on).
Correct connection of sensors causes displaying of actual CH furnace's temperature and the
temperature of useful warm water of the WUW buffer if the function is active). On the
screen appears which function is currently used by the driver.
The driver may work in three working modes “STOP”, “IGNITION”, “AUTOMATIC WORK”).
The change of the working mode happens when the “MODE/ ” button is pressed on the
regulator's panel. Activating the “STOP” mode is possible in all modes after pressing the
“MODE/ ” button for 3 seconds. This mode activates procedures connected with the
burner's putting out i.e. burning off and cleaning.
While activating the driver for the first time, the “STOP” mode is activated. Every next
time, its status is saved in the regulator's non-volatile memory. Activating the driver again,
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PELLETS DRIVER
** REG-03/G v4.0 **
CH:---- C WUW:---- C
STOP
CH:39.5 C WUW:23.6 C
IGNITION...
CH temperature WUW temperature
Burner function

Megatherm wood-pellet burner MPB 90 Pro
automatically causes switching on of the lately used working mode.
In the table beneath a short description of particular functions of the burner, activated
depending on the working mode of the driver, is shown.
FUNCTION'S
NAME DESCRIPTION OF FUNCTIONS
STOP Burner stopped.
EEDER ILLING illing the feeder.
illing stops automatically after about 10 minutes.
IGNITION Ignition of pellet. The mode would be automatically changed after
detecting a flame by the sensor.
CLEANING The cleaning of the burner from he left ashes. The cleaning function
also as a blow down before ignition.
WORK Heating the boiler up to the set temperature. Showing the actual
power of the burner.
MAINTAIN Sustaining the set temperature (if the burner's working mode is in
the mode of continuous work)
BURNING O Putting off the burner. Active in the “STOP” mode or in the
temporal working mode of the burner.
STANDBY Standby of the burner for the decline of the temperature of a
hysteresis (if the burner's working mode is in the temporal mode).
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Megatherm wood-pellet burner MPB 90 Pro
8. Parameter's
To move round the menu and to set particular parameters there are four buttons placed on
the driver's panel: “MODE/ ”, “MENU/OK”, “+”, “-”. The parameters chosen by the
user are divided into four groups: (A) “CH FURNACE SETTINGS”, (B) “WUW BUFFER
SETTINGS”, (C) “BURNER SETTINGS”, ( ) “DRIVER SETTINGS”. The division of
particular parameters in groups is shown in the “Settings table”.
➢CH FURNACE SETTINGS (A)
FUNCTION
NO.
FUNCTION
NAME
SETTING
UNIT
SETTING
RANGE
MANUFACTURER
SETTING
1HEATING WATER
TEMPERATURE ºC35 - 85 65*
2CH PUMP ACTIVATION
TEMPERATURE ºC 20 - 60 35*
3CH FURNACE
HYSTERESIS ºC 1 - 20 5*
4FURNACE
MO E --- Winter/Summer Winter*
➢BURNER SETTINGS (B)
FUNCTION
NO.
FUNCTION
NAME
SETTING
UNIT
SETTING
RANGE
MANUFACTURER
SETTING
1BURNER POWER
(WORK) kW 10 - 90 30*
2BURNER POWER
(MAINTAIN) kW 2 - 19 10*
3BURNER
MO E** --- Continuous/ Single/Analogue Continuous*
4MAXIMUM MAINTAIN
TIME hours Off – 8 Off *
5SELF CLEANING FREQ
TIME min 10 – 480 240*
6SELF CLEANING
TIME sec Off – 60 off
7BURNER FLAME
MEASUREMENT % --- ---
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Megatherm wood-pellet burner MPB 90 Pro
** Burner has 3 modes: continuous mode, single mode and analogue mode.
Single mode: The burner reaches the desired “HEATING WATER TEMPERATURE “ and
burns off. Then, it starts its o eration again when the tem erature of the boiler goes down
to the tem erature “HEATING WATER TEMPERATURE - CH FURNACE HYSTERESIS”. The CH
FURNACE HYSTERESIS must be more than 10
o
C
Continuous mode: The burner reaches the desired “HEATING WATER TEMPERATURE “ and
goes down at 3kW (maintain).When the boiler's tem erature goes down to the tem erature
“HEATING WATER TEMPERATURE - CH FURNACE HYSTERESIS”, the burner increases its
ower from 3kW (maintain) to the maximum burner ower (i.e30kW). The CH FURNACE
HYSTERESIS must be no more than 5
o
C
Analogue mode: The burner reduces its ower 1/3 (for exam le: from 30kW to 21kW) 10
o
C before the furnace reaches the “HEATING WATER TEMPERATURE “. When the
tem erature of the furnace is 510
o
C before “HEATING WATER TEMPERATURE “, the
burner reduces its ower again 1/3 ((for exam le: from 21kW to 12kW).
➢DEVICE SETTIN S (C)
FUNCTION
NO.
FUNCTION
NAME
SETTIN
UNIT
SETTIN
RAN E
MANUFACTURER
SETTIN
1LANGUAGE
SETTINGS ---
Polish/
English/
Germany/Greek
English*
2FACTORY
SETTINGS --- Yes/No ---
3ENABLE SERVICE
MODE --- 000 - 999 112
➢MANUFACTURER SETTIN S (D)
FUNCTION
NO.
FUNCTION
NAME
SETTIN
UNIT
SETTIN
RAN E
MANUFACTURER
SETTIN
1FILLING FEEDER
TIME minutes 5 - 20 11*
2PELLETS IGNITION
TIME minutes 1 - 15 6*
3FAN POWER
(IGNITION) % 5 - 50 10*
4 PELLETS DOSE g 50 - 500 180*
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Megatherm wood-pellet burner MPB 90 Pro
(IGNITION)
5FEEDER
PERFORMANCE kg/h 5.0 – 99.0 20.0*
6PELLETS FEEDING
PERIOD s conds 10 - 60 20*
7OVERFLOW AIR
(WORK) multipli r 0.2 - 4 0.4*
8OVERFLOW AIR
(MAINTAIN) multipli r 0.2 - 4 1.0*
9FLAME DETECTOR
TRESHOLD % 5 – 90 10*
10 FURNACE PROTECTION
(OVERHEAT) ºC 60 - 90 80*
11 STB
TEMPERATURE ºC 90 – 110 90*
12 FEEDER MULTIPLIER - 1 – 5 2*
13 IGNITION STABILIZATION S conds 0 - 250 30*
14 MAINTAIN STABILIZATION S conds 0 - 250 90*
15 MAXIMUM BURNER POWER KW 30 – 250 90*
16 MINIMUM BURNER POWER KW 2 – 50 19*
17 MINIMUM FURNACE
TEMPERATURE ºC 20 – 60 35*
18 SENSOR TYPE - KTY/PT KTY*
17 EXTERNAL CONTROL - Y s / No No*
18 TEMPERATURE
CALIBRATION ºC - 10.0 – 10.0 - *
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Megatherm wood-pellet burner MPB 90 Pro
9. Manufacturer's menu
Activation of Manufacturer's menu
In order to activate the manufacturer's settings menu, go to the menu "DRIVER
SETTINGS" and sub-menu "EN BLE SERVICE MODE" and with the help of buttons
"MENU/OK" and "+" or "-" choose the code 112. Then, press "MODE/ " and leave
the sub-menu, go to the menu "M NUF CTURER SETTINGS"
* CAUTION!!
Manufacturer's settings are exclusively the suggestion. All of the values depend on the kind
of solid fuel, the sytem, the user's & installationsrequirements, etc.
The producer of the burner reserves the changes of the ranges of settings in next versions
of the driver.
Description of manufacturer's settings
1. FEEDER FILLING TIME
n this menu the manufacturer sets the time of the feeder's filling. The time is the
protection from filling up of the burner. This time depends on the angle of arrival of the
large feeder. The parameter is set in the bracket of 5 to 20 minutes.
Manufacturer Advise: 10-12min
2. PELLETS IGNITION TIME
n this menu the manufacturer sets the time of the pellet's ignition. After the lapse of
time, the ignition cycle restarts. The cycle is repeated once again. Unsuccessful trials of
ignition are seen on the screen as a message: larm!no pellets. The cause of this
condition may be also a broken or dirty flame's sensor. The time of ignition is set in the
bracket of 1 to 15 minutes.
Manufacturer Advise: 6-7min
14
E. MANUFACTURER
SETTINGS

Megatherm wood-pellet burner MPB 90 Pro
3. FAN POWER (IGNITION)
In this parameter the producer sets the power of the fan during the pellet's ignition. The
fan's power is set in the bracket of 5 to 50%.
If chimney's draught is over - 5Pa, then the parameter stays at 0%
If chimney's draught is from 0 to - 5Pa, then the parameter must change to 5-20%.
Manufacturer Advise: 10%
4. PELLETS DOSE (IGNITION)
In this parameter the manufacturer sets the dose of fuel needed to ignite the burner. The
parameter is set in the bracket of 50 to 500 grams. Depending the pellet's quality the
parameter can change.. The default value is 80grams
Manufacturer Advise: 180-200gr. Depends on pellet quality
5. FEEDER PERFORMANCE
In this parameter the manufacturer sets the performance of the feeder. The whole work of
the burner is based on this parameter. The parameter is set in the bracket of 5 to 99 kg/h
with the step of 500grams.
Manufacturer Advise: C n not be given ny dvise since it is depended on the
feeder's ngle nd pellet qu lity. Ple se follow the procedure on p r gr ph 11
“First use”
6. PELLETS FEEDING PERIOD
In this parameter the manufacturer sets the period of feeding the pellet. After the lapse of
time, the driver releases the next dose of fuel. In the cycle of maintain, the parameter is
ten times multiplied. The feeding period of the pellet is set in the bracket of 0 to 60
seconds.
Manufacturer Advise: 10-20s
7. OVERFLOW AIR (WORK)
In this parameter the manufacturer sets the overflow of the air needed to burn the
specified amount of the pellet during m ximum work power of the burner. This
parameter should be increased if during the working cycle too low capacity of the fan would
be noticed. The overflow of the air is set in the bracket from 0. 0 to 4.00
Manufacturer Advise: C n not be given ny dvise since it is depended on power,
pellet, chimney dr ught, etc..
8. OVERFLOW AIR (MAINTAIN)
In this parameter the manufacturer sets the overflow of the air needed to burn the
15

Megatherm wood-pellet burner MPB 90 Pro
specified amount of the pellet during maintain mode. This parameter should be increased if
during the working cycle too low capacity of the fan would be noticed. The overflow of the
air is set in the bracket from 0.10 to 4.00
Manufacturer Advise: Can not be given any advise since it is depended on power,
pellet, chimney draught, etc..
9. FLAME DE EC ION RESHOLD
n this parameter the manufacturer sets the flame's detection threshold. Beneath the pre-
set threshold's value, the burner detects the vanishing of the flame. The parameter is set in
the bracket of 5 to 90%.
Manufacturer Advise: 10%
10. FURNACE PRO EC ION (OVERHEA )
n this parameter, the user sets the furnace's temperature which protects from the
overheating. The protection is activated when a higher temperature than the one that was
previously set is reached and when the CH pump is turned off. The driver starts the CH
pump automatically and switches off the burner. The protection of the furnace from the
overheating is set in the bracket of 60 to 90 ºC. The furnace's protection can be activated
when:
•working of room thermostat and simultaneously surpassing the protection
temperature of the furnace,
•setting ”Summer” function and simultaneously surpassing the protection
temperature of the furnace,
•setting the ”S OP” mode and simultaneously surpassing the protection temperature
of the furnace,
•surpassing the temperature of the heating water over 90 ºC.
Manufacturer Advise: 80-90 ºC
11. S B EMPERA URE
t is the temperature where the Overheating Alarm is activated. At the same time the
controller activates the CH pump and the WUW pump. For water boiler the default value is
90
o
C.
f sensor type PT is chosen then, the value of this parameter can change depending the
application.
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Megatherm wood-pellet burner MPB 90 Pro
12. FEEDER MULTIPLIER
In this parameter, we set the value of the operation time of the Internal feeder regarding
the operations time of the External Feeder. The operation time of the internal feeder must
be enough, so the wood-pellet is supplied from the external feeder, to be driven by the
internal feeder to the burners fire chamber.
Manufacturer dvise: 1.5 – 2.5
13. IGNITION STABILIZATION
When ignition has occurred, the air-fan works for the time is set by this parameter. This
operation drives the ignition gases out of the boiler faster.
Manufacturer dvise: 10-30sec
14. MAINTAIN STABILIZATION
When the burner goes from work mode to maintain mode, the air fan works for the time is
set in this parameter, so to burn the wood-pellet which is located in the burner's fire
chamber, before starts the maintain mode.
Manufacturer dvise: 60-240sec.
15. MAXIMUM BURNER PO ER
In this parameter the installer can set the maximum burner power, where the user can set
by visiting the burner's menu. This prevents the user to set the burner at a maximum
power, than the one it is required by the system.
Manufacturer dvise: 90k
16. MINIMUM BURNER PO ER
In this parameter the installer can set the minimum burner power, where the user can set
by visiting the burner's menu. This prevents the user to set the burner at a maximum
power, than the one it is required by the system.
Manufacturer dvise: 19k
17. MINIMUM FURNACE TEMPERATURE
In this menu the manufacturer sets the minimal temperature of the furnace which can be
set by the user. The activity of the room thermostat causes the setting of the boiler into
this parameter. The minimal temperature of the boiler is set in the bracket of 20 to 60 °C.
Manufacturer dvise: 35
o
C
17

Megatherm wood-pellet burner MPB 90 Pro
18. SENSOR TYPE
In this parameter the installer can choose between KTY ant PT 1000 temperature sensors.
KTY is the default sensor which is used for measuring temperatures up to 100
o
C.
The PT 1000 sensor is given by the manufacturer under re uest and it is used to
measure temperature higher than 100
o
C (industrial applications).
19. EXTERNAL CONTROL (Industrial application)
This parameter, it is activated onl for industrial aplication
If external control No(Manufacturer's settings):
1. When thermostat is ON, the burner works at the maximum power it is set.
2. When thermostat is OFF, the burner burns off
This is mostl suggested for low consumption houses (less than 3.000kg/ ear) or for
connecting with timer.
If external control Yes(Manufacturer's settings):
1. When thermostat is ON, the burner works at the maximum power it is set.
2. When thermostat is OFF, the burner goes at maintain mode and keeps a small fire.
In both cases, when the thermostat is OFF, the CH pump stops.
Manufacturer Advise: Can not be given any advise, since It is depended on the
application the burner has been installed
20. TEMPERATURE CALIBRATION
In this menu the manufacturer calibrates the temperature sensors. It is possible to add a
regular offset for the temperature of the furnace and the warm useful water. The parameter
is set in the bracket of -10 to +10°C.
10. Room thermostat
The room thermostat (or a timer) can be connected on the connector which is at the back
of the controller, b replacing the “bridge (or on the PINs 1&2 in the controller).
It is forbidden to give voltage to this connection. The connection with the room thermostat
must be onl a “Cold junction”
When a room thermostat is connected in the controller, we have the two following options:
If external control No(Manufacturer's settings):
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Megatherm wood-pellet burner MPB 90 Pro
3. When thermostat is ON, the burner works at the maximum power it is set.
4. When thermostat is OFF, the burner burns off
This is mostly suggested for low onsumption houses (less than 3.000kg/year) or for
onne ting with timer.
If external control Yes(Manufa turer's settings):
1. When thermostat is ON, the burner works at the maximum power it is set.
2. When thermostat is OFF, the burner goes at maintain mode and keeps a small fire.
In both ases, when the thermostat is OFF, the CH pump stops.
11. First use
1. Ensure that the installation has been done a ording to this manual
2. Ensure that the plasti pipe is not onne ted to burner's feeding pipe
3. Fill the external feeder up with wood-pellet, by following the dire tion of paragraph
14 16, “Feeder filling pro edure”.
4. Ensure that the feeder is full. Let the feeder working after the first pellets ome out
of the feeder for 10-15 minutes (lo ate a plasti bag at the exit of the feeder)
5. Empty the plasti bag and pla e it ba k at the exit of the feeder.
6. Conne t again the power supply able of the ontroller with the
feeder's able for 2 minutes.
7. Weight the wood pellet whi h is in the bag (for example 0.8kg)
8. Multiply it by 30 minutes (0.8x30 = 24kg/hr). This is the feeder's performance
9. Repeat the steps 4-8, 2-3 times until you make sure that you weight the right
quantity.
10. Place this value (i.e 24kg/hr) on manufacturer's settings menu, in the
parameter “5. Feeder Performance”
11. Set the parameter “Feeder multiplier” at the right value so the wood-pellet
is supplied from the external feeder to be driven by the internal feeder to
the burners fire chamber without keeping any wood pellet inside the
internal feeder.
12. When the maximum power of the burner is rea hed , then adjust the burners flame
by alibrating the air. The burning air is alibrated by hanging the value of “Overflow
pellet's air” at Manufa turer's menu
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Megatherm wood-pellet burner MPB 90 Pro
12. Start of the burner
1. Activate the controller by pressing the button
2. It is written on the LCD screen the following
3. By pressing the button “MODE “ once changes the operation from “Stop” to
“ignition”. By pressing the button “MODE “ changes the operation from
“Ignition” to “Automatic”.
4. In “Automatic mode”, starts the operation of the burner.
5. When the photo sensors detects fire, then the burner starts its “Work” by increasing
its power gradually to the power it has been set (i.e 30kW)
6. When the boiler's water temperature reaches the desired temperature “HEATING
WATER TEMPERATURE “, the the power of the burner goes down ta 3kW (Maintain
mode)
7. The burner works at “Maintain mode” till the boiler's water temperature goes down
to the temperature:
“HEATING WATER TEMPERATURE - CH FURNACE HYSTERESIS”
13. Stop of the burner
1. The burner can be either at “Work” or “Maintain” or “standby”
2. Press the button “MODE “ continuously till “STOP MODE” appears on the
screen.
3. It is written “Burning off” till the photo sensor stops to detect fire (3-5 min)
4. When he photo sensor stops to detect fire, “cleaning procedure takes place for few
seconds.
20
CH:---- C WUW:---- C
STOP
CH:39.5 C WUW:23.6 C
IGNITION...
CH temperature WUW temperature
Burner function