Centrometal BioTec Plus Owner's manual

TECHNICAL INSTRUCTIONS
HEATING TECHNIQUE
Centrometal d.o.o. - Glavna 12, 40306 Macinec, Croatia, tel: [phone], fax: [phone]
Description and using of BioTec Plus
control unit
- USER
THE FIRST START-UP MUST BE DONE BY AUTHORIZED PERSON
OTHERWISE PRODUCT WARRANTY IS NOT VALID
TUBTP-CU-08-2017-1.08h-ENG
BioTec Plus

If the language selection is "disabled" (display > language sel > disabled), initial message wil appear
in the screen as long as the set in the menu "Welcome time" (display > welcome time).
Button’’OK’’
Initial message duration
(countdown)
Boiler power
(25, 29, 31, 35, 45 kW)
Software version
Software version
Language selection
Boiler power
(25, 29, 31, 35, 45 kW)
When turning the main switch the screen should not be pressed (by finger ...). If
the screen when you turn the main switch is pressed (on the screen labeled
"Firmware update ') regulation is in ”software update“ that can be used by
authorized personnel only. If this happens, it is necessary to turn off the main
switch and restarted without any pressure on the display.
After turning on the main switch, screen will display language selection menu and software version.
To select the language, press the flag of language you want.
SWITCHING ON
DESCRIPTION
vx.xx xx kW
vx.xx xx kW
23
RIGHT SIDE TOOLBAR
1
2
3
4
5
LEGEND:
1 - Time & Date
2 - Display selection - Main menu / Main screen
3 - Button for change fuel (WOOD(w) / PELLETS(p))
4 - State of the current boiler status (working phase)
5 - Boiler Start / Stop

If the language selection is "disabled" (display > language sel > disabled), initial message wil appear
in the screen as long as the set in the menu "Welcome time" (display > welcome time).
Button’’OK’’
Initial message duration
(countdown)
Boiler power
(25, 29, 31, 35, 45 kW)
Software version
Software version
Language selection
Boiler power
(25, 29, 31, 35, 45 kW)
When turning the main switch the screen should not be pressed (by finger ...). If
the screen when you turn the main switch is pressed (on the screen labeled
"Firmware update ') regulation is in ”software update“ that can be used by
authorized personnel only. If this happens, it is necessary to turn off the main
switch and restarted without any pressure on the display.
After turning on the main switch, screen will display language selection menu and software version.
To select the language, press the flag of language you want.
SWITCHING ON
DESCRIPTION
vx.xx xx kW
vx.xx xx kW
23
RIGHT SIDE TOOLBAR
1
2
3
4
5
LEGEND:
1 - Time & Date
2 - Display selection - Main menu / Main screen
3 - Button for change fuel (WOOD(w) / PELLETS(p))
4 - State of the current boiler status (working phase)
5 - Boiler Start / Stop

A
1a
1b
A
2Button for change fuel
(WOOD(w) / PELLETS(p))
2
Main menu on BioTec Plus boiler control unit is composed of two parts - changeable part (1a and
1b) and static part (2). By pressing button for change fuel (see image below) displayed parameter
will be changed. Displaying parameters can be changed regardless of boiler working phase and
which fuel are choosen as active for work.
1a - WOOD(w) menu (changeable menu) - menu for using parameters at wood firing (left side of
the boiler)
1b - PELLETS(p) menu (changeable menu) - menu for using parameters at wood pellet firing
(right side of the boiler)
2 - static part of main menu - this part of main menu is always same
MAIN MENU
45
BUTTONS
Button ’’START’’/’’STOP’’
Button ’’ON / OFF’’
options: on / off boiler operation’’
Button ’’DISPLAY SELECTION’’
options: main menu / work
Button ’’BOILER OPERATION DISPLAY’’
options: graphic / numeric
Button ’’ENTER’’
Button ’’BACK’’
Button’’PREVIOUS SCREEN’’
Button ’’NEXT SCREEN’’
Button ’’OK’’
Navigation buttons:
’’LEFT’’, ’’RIGHT’’, ’’UP’’, ’’DOWN’’
Button ’’DELETE’’
Button ’’FACTORY SETTINGS’’
Button ’’INFORMATION’’
Button ’’COPY’’ Button ’’PASTE’’

A
1a
1b
A
2Button for change fuel
(WOOD(w) / PELLETS(p))
2
Main menu on BioTec Plus boiler control unit is composed of two parts - changeable part (1a and
1b) and static part (2). By pressing button for change fuel (see image below) displayed parameter
will be changed. Displaying parameters can be changed regardless of boiler working phase and
which fuel are choosen as active for work.
1a - WOOD(w) menu (changeable menu) - menu for using parameters at wood firing (left side of
the boiler)
1b - PELLETS(p) menu (changeable menu) - menu for using parameters at wood pellet firing
(right side of the boiler)
2 - static part of main menu - this part of main menu is always same
MAIN MENU
45
BUTTONS
Button ’’START’’/’’STOP’’
Button ’’ON / OFF’’
options: on / off boiler operation’’
Button ’’DISPLAY SELECTION’’
options: main menu / work
Button ’’BOILER OPERATION DISPLAY’’
options: graphic / numeric
Button ’’ENTER’’
Button ’’BACK’’
Button’’PREVIOUS SCREEN’’
Button ’’NEXT SCREEN’’
Button ’’OK’’
Navigation buttons:
’’LEFT’’, ’’RIGHT’’, ’’UP’’, ’’DOWN’’
Button ’’DELETE’’
Button ’’FACTORY SETTINGS’’
Button ’’INFORMATION’’
Button ’’COPY’’ Button ’’PASTE’’

MAIN SCREEN
1a
1b
2
4
3
6
7
8
9
10
11
19 2018
17
16
15
5
12 13 14 2221
23
1a - Boiler (Wood firing side)
1b - Boiler (Pellet firing side)
2 - Buffer tank
3 - Boiler pump P1
4 - 3 - way protection valve
(thermic or with actuator)
5 - Boiler temperature (Wood firing
side)
6 - Symbol of fan operation
(simbol is rotate when fan working)
7 - Fan speed (rpm)
8 - Simbol and opening percentage of
primary air actuator
9 - Simbol and opening percentage of
secondary air actuator
10 - Glow option (if is enabled)
11 - Combustion chamber temperature
12 - Flue gas temperature
13 - The percentage of oxygen in the flue gases
(lambda probe)
14 - Boiler side activity indicator
15 - Wood pellet tank
16 - Boiler temperature (Wood pellet firing side)
17 - Fuel level sensor (Wood pellets)
18 - Feeder screw
19 - Photocell
20 - Electric heater
21 - Outer temperature
22 - Errors and warnings
23 - Boiler working phase
24 - Wood pellet feeding system (if is installed -
additional equipment)
24
67
The pump has a request for work (next to the pump symbol bright yellow square when
the consumer given the demand for work the pump, the pump does not work if you have
not met all the conditions for work, for example. low temp. in the boiler, otherwise the
pump normally works)
Pump (when pump is working symbol is rotating, otherwise idle)
70°C
50°C
Accumulation tank with current
temperature at top of the tank and
at the bottom of the tank.
55°C
Domestic hot water tank
with current temperature
Heating circuit
Room thermostat
Next to the room thermostat
symbol bright blue circle (the
room thermostat has requested
for operating the pump, the pump
does not work if you have not met
all the conditions for its operation,
for example. low temp. in the
boiler, otherwise normally works)
SYMBOLS
External control require burner
operation (this symbol
is visible only if external control
is installed and configured)
Burner operation is not required
by external control (this symbol
is visible only if external control
is installed and configured)
Cleaning of flue pass.
(this symbol is located in
left side-wood)
Pellets reffil
(this symbol is located in
left side-wood)

MAIN SCREEN
1a
1b
2
4
3
6
7
8
9
10
11
19 2018
17
16
15
5
12 13 14 2221
23
1a - Boiler (Wood firing side)
1b - Boiler (Pellet firing side)
2 - Buffer tank
3 - Boiler pump P1
4 - 3 - way protection valve
(thermic or with actuator)
5 - Boiler temperature (Wood firing
side)
6 - Symbol of fan operation
(simbol is rotate when fan working)
7 - Fan speed (rpm)
8 - Simbol and opening percentage of
primary air actuator
9 - Simbol and opening percentage of
secondary air actuator
10 - Glow option (if is enabled)
11 - Combustion chamber temperature
12 - Flue gas temperature
13 - The percentage of oxygen in the flue gases
(lambda probe)
14 - Boiler side activity indicator
15 - Wood pellet tank
16 - Boiler temperature (Wood pellet firing side)
17 - Fuel level sensor (Wood pellets)
18 - Feeder screw
19 - Photocell
20 - Electric heater
21 - Outer temperature
22 - Errors and warnings
23 - Boiler working phase
24 - Wood pellet feeding system (if is installed -
additional equipment)
24
67
The pump has a request for work (next to the pump symbol bright yellow square when
the consumer given the demand for work the pump, the pump does not work if you have
not met all the conditions for work, for example. low temp. in the boiler, otherwise the
pump normally works)
Pump (when pump is working symbol is rotating, otherwise idle)
70°C
50°C
Accumulation tank with current
temperature at top of the tank and
at the bottom of the tank.
55°C
Domestic hot water tank
with current temperature
Heating circuit
Room thermostat
Next to the room thermostat
symbol bright blue circle (the
room thermostat has requested
for operating the pump, the pump
does not work if you have not met
all the conditions for its operation,
for example. low temp. in the
boiler, otherwise normally works)
SYMBOLS
External control require burner
operation (this symbol
is visible only if external control
is installed and configured)
Burner operation is not required
by external control (this symbol
is visible only if external control
is installed and configured)
Cleaning of flue pass.
(this symbol is located in
left side-wood)
Pellets reffil
(this symbol is located in
left side-wood)

Using of BioTec Plus boiler are consist of using of left part of the boiler (fuel: wood) and using of
right part of the boiler (fuel: wood pellets). On boiler control unit is necessary to choose which side
of the boiler will be used (which fuel will be used). Below is shown procedure for choosing boiler
side for work when is boiler turned off (working phase „OFF”).
PROCEDURE FOR CHOOSING BOILER SIDE FOR WORK (USED FUEL):
Example: Selecting wood pellets for active fuel (right side of the boiler).
Left and right side of the boiler have indicators (A and B) which shows which of these two side are
active (which fuel are choosen). Active side have green indicator, inactive side have red indicator
(red „x”). On figure above is example for switching from left side of the boiler to the right side of the
boiler (from wood to wood pellets). It’s necessary to press and hold for 3 seconds indicator on
inactive boiler side (figure 1, indicator B). On display will be displayed message „Do you want
choose wood pellets for active fuel?” (figure 2). Press „OK” button (figure 2). Now left side of the
boiler have red inactive indicator, right side of the boiler have green indicator of activity (figure 3.).
2
CHOOSING BOILER SIDE (choosing fuel)
1
Hold this button for 3s!
A B
3
A B
89
TAKING OVER
Note: Option „Taking over” is possible only from left side of the boiler (fuel: wood) to right
side of the boiler (fuel: wood pellets) (wood pellets taking over wood).
„Taking over” option is used for automatic switching operation from one fuel to another fuel.
Automatic switch is possible only from wood to wood pellets.
For use of „Taking over” option is neccesary to activate it (see „Activating „Taking over” option”).
„Taking over” option works on the way that when left part of the boiler (fuel: wood) runs out of the
fuel, right side of the boiler (fuel: wood pellets) automatic take over work activity and right side of
the boiler (fuel: wood pellets) continues with work.
ACTIVATING „TAKING OVER” OPTION
Activating „Taking over” option can be done on two ways:
a) through main menu (menu: WOOD(w), „Taking over” submenu)
b) through main screen by pressing boiler side status indicator
a) activating „Taking over” option through main menu
On main menu (menu: WOOD(w)) (see Point „8.1.4. Main menu”) choose submenu „4. Taking
over”, select „Pellet On” and confirm it by pressing „Confirm” button.
b) activating „Taking over” option through main screen (boiler side activity indicator)
Press green activity indicator on right boiler side (fuel: wood) and hold it for 3 seconds. On display
will be desplayed „Do you want to ENABLE „pellets take over?”. Confirm it by pressing „Confirm”
button.
Hold this button for 3s!

Using of BioTec Plus boiler are consist of using of left part of the boiler (fuel: wood) and using of
right part of the boiler (fuel: wood pellets). On boiler control unit is necessary to choose which side
of the boiler will be used (which fuel will be used). Below is shown procedure for choosing boiler
side for work when is boiler turned off (working phase „OFF”).
PROCEDURE FOR CHOOSING BOILER SIDE FOR WORK (USED FUEL):
Example: Selecting wood pellets for active fuel (right side of the boiler).
Left and right side of the boiler have indicators (A and B) which shows which of these two side are
active (which fuel are choosen). Active side have green indicator, inactive side have red indicator
(red „x”). On figure above is example for switching from left side of the boiler to the right side of the
boiler (from wood to wood pellets). It’s necessary to press and hold for 3 seconds indicator on
inactive boiler side (figure 1, indicator B). On display will be displayed message „Do you want
choose wood pellets for active fuel?” (figure 2). Press „OK” button (figure 2). Now left side of the
boiler have red inactive indicator, right side of the boiler have green indicator of activity (figure 3.).
2
CHOOSING BOILER SIDE (choosing fuel)
1
Hold this button for 3s!
A B
3
A B
89
TAKING OVER
Note: Option „Taking over” is possible only from left side of the boiler (fuel: wood) to right
side of the boiler (fuel: wood pellets) (wood pellets taking over wood).
„Taking over” option is used for automatic switching operation from one fuel to another fuel.
Automatic switch is possible only from wood to wood pellets.
For use of „Taking over” option is neccesary to activate it (see „Activating „Taking over” option”).
„Taking over” option works on the way that when left part of the boiler (fuel: wood) runs out of the
fuel, right side of the boiler (fuel: wood pellets) automatic take over work activity and right side of
the boiler (fuel: wood pellets) continues with work.
ACTIVATING „TAKING OVER” OPTION
Activating „Taking over” option can be done on two ways:
a) through main menu (menu: WOOD(w), „Taking over” submenu)
b) through main screen by pressing boiler side status indicator
a) activating „Taking over” option through main menu
On main menu (menu: WOOD(w)) (see Point „8.1.4. Main menu”) choose submenu „4. Taking
over”, select „Pellet On” and confirm it by pressing „Confirm” button.
b) activating „Taking over” option through main screen (boiler side activity indicator)
Press green activity indicator on right boiler side (fuel: wood) and hold it for 3 seconds. On display
will be desplayed „Do you want to ENABLE „pellets take over?”. Confirm it by pressing „Confirm”
button.
Hold this button for 3s!

Methods for parameters input
PARAMETERS MANAGMENT
x.x.x. Working phase
xx Factory:
xx
xx
xx
2
1
3
4
x.x.x. Working phase
xx xx %
6
1
5
7
8
1 - Working phase bar
- on this bar will be showned name of working phase for which changing parameters value
2. Parameter value
- in this box are shown currently adjusted value
3. Factory adjusted value
- in this box are shown factory adjusted value of this parameter
4. Possible selection (Method 1)
- in this box are located available options for choose
5. Parameter value
- in this box are shown currently write value
6. Currently adjusted value
- in this box are shown currently adjusted value of paramete (last confirmed)
7. Info button
- info button telling us value of factory adjustment, max. possible value for adjustment and min.
possible value for adjustment
8. Factory settings
- by pressing this button parameter value will be adjusted to factory value
Method 1: entering parameters by
choosing offered values.
Method 2: entering parameters by
numerical keyboard (numerical values).
10 11
WOOD(w) MENU
1. TEMPERATURE
1.1. (w) BOILER TEMPERATURE
In this parameter is possible to adjust boiler working
temperature.
Possible adjustment:
- Factory adjusted: 85°C
- Minimal adjustment value: 75°C
- Maximal adjustment value: 90°C
1.2. (w) DIFFERENCE OF BOILER TEMPERATURE
1.3. (w) MINIMAL BUFFER TANK TEMPERATURE
X
X - only if „DHW” (domestic hot water) exist on heating system (must be configured like additional
equipment)
In this parameter is possible to adjust difference of
boiler working temperature.
Possible adjustment:
- Factory adjusted: 5°C
- Minimal adjustment value: 5°C
- Maximal adjustment value: 7°C
In this parameter is possible to adjust minimal buffer
tank temperature.
Possible adjustment:
- Factory adjusted: 20°C
- Minimal adjustment value: 5°C
- Maximal adjustment value: 85°C