Mareli Systems ONYX HYDRO 12 User manual

ONYX HYDRO 12/18/24/30 Pellet stove
Assembly and exploitation manual
e present stove is designed and manufactured according to
Standards: BNS (Bulgarian National Standard) EN 14785-2006
Mareli Systems

2
Mareli Systems
Observing the prescriptions of the present manual is in the user’s favour and is one of
the warranty conditions. Compliance with this instruction is in the interest of the con-
sumer and one of the warranty terms.
• is appliance is not intended for use by people (including children) with limited physical, senso-
ry or mental abilities or lack of experience and knowledge. e installation must be performed by
a qualied expert in the eld of heating installations or authorized by “Marelli Systems’ service. e
place and way of connecting the stove should be selected carefully in accord with the safety instruc-
tions. Install away from ammable objects!
• Before starting any operation, the user must read and fully understand the contents of this in-
struction manual. Incorrect setup may cause hazardous conditions and / or incorrect function of
the stove;
• Do not wash the stove with water. Water can get inside the replace and damage the electronics
and cause an electric shock;
• Do not put clothes to dry on the stove. Any clothes hangers and other objects must be located
within a reasonable distance from the replace. Fire hazard;
• e user is fully responsible for the proper use of the product which exempts the company from
liability of any users errors or misbehaviour or omissions;
• Any intervention or replacement that is made by unauthorized people or using non original spare
parts for the product can be risky for the user and release the company from all liability;
• Most surfaces of the stove are extremely hot (the door handle, glass, ue pipe, etc.). Avoid contact
with these parts before assuring yourself that you us temperature resistant gloves as well as suitable
temperature resistant instruments;
• Under no circumstances should the re be ignited with the door open or broken glass;
• e product must be electrically connected to a system equipped with an eective earth conduc-
tor. (Must be grounded);
• Turn o the stove in case of failure or malfunction;
• All unburned pellets in the burner aer each unsuccessful attempt ignition must be removed
before a new ignition;
• When installing the product all re safety requirements must be respected
If there is a re in the ue pipe, extinguish the stove, disconnect the power cord and never open the
door. Call competent authorized service technicians;
• Do not light the stove with ammable materials if the ignition system failed;
• Periodically check and clean the smoke outlet ducts of the stove (connection to the ue pipe);
• Pellet stove is not a cooker;
• Always keep the cover closed;
SAFE DISTANCES:
When installing the product a safe distance of at least 600 mm must be respected. is
distance applies to the product located near materials of B or C ammability level. e
safe distance is doubled if the product is close to materials of C3 combustion level.
INSTRUCTIONS FOR SECURITY:

3
Mareli Systems
1. PURPOSE
e stove is purposed to heat domestic and public premises by the means of pellets.
e stove is equipped with a steel water jacket designed for heating systems with water
temperature up to 90º C at a maximum super pressure up to 0,15 Mpa. Tests are run at
pressure of 0,3 Mpa.
e stove is designed and manufactured to work with A-class pellets only
( DIN plus 51731 ) with the following characteristics:
What are the pellets.
e pellets are produced by compressed wood-
en waste le from the production of various
furniture, sawmills and others. is type of
fuel is environmentally friendly because in
the production process no agglutinate agents
(glues, resins and others) are added. Actual-
ly, the integrity of the pellets is guaranteed by
the lignite – a natural ingredient contained in
the wood itself. While the wood has a calorie
capacity of 4.4 kW/kg (15% humidity at 18
months drying), the pellets have 5.2 kW/kg.
• Material 100% pure conifer or broad-leaf
wood;
• Diameter Ф6/8 mm;
• Length 20-30mm;
• Calorie capacity 5.2 kW/kg;
• Ash content < 8%;
e use of pellets with characteristics dierent from the recommended may result in
power decrease, unstable and inconsistent work of the stove.
Info: To ensure the proper work of the stove the pellets must be stored in a dry place!
Recharging of pellets can be done during work, with the following sequence:
1. Open the bunker (located at the top rear of the product);
2. Fill the hopper, using non-combustible container;
3. Close the lid of the bunker;
Attention!!! Use gloves! Beware of hot surfaces!

4
Mareli Systems
2. TECHNICAL DATA
Maximum output
KW
12
15
18
24
30
Heated area
m³
250
300
350
500
600
Height H
mm
1047
1047
1127
1127
1177
Width W
mm
534
534
584
584
624
Depth D
mm
631
631
631
631
672
Pellet bunker volume
kg
19
19
30
30
30
Fresh air pipe
ф mm
60
60
60
60
76
Exhaust gas pipe
ф mm
80
80
80
80
80
Weight
kg
165
165
175
175
192
Fuel type
Pellets
Φ6-Φ8
Pellets
Φ6-Φ8
Pellets
Φ6-Φ8
Pellets
Φ6-Φ8
Pellets
Φ6-Φ8
The chimney draft
Pa
12
12
12
12
12
Electrical consumption
V/Hz
60/310
60/310
60/310
60/310
60/310
Electrical supply
V/Hz
230/50
230/50
230/50
230/50
230/50
Water jacket capacity
L
30
30
41
41
48
Working pressure
bar
0,5-2,0
0,5-2,0
0,5-2,0
0,5-2,0
0,5-2,0
Space heating output
Kw
1
1
2
3
4
Working at environment temperature
C
5-40
5-40
5-40
5-40
5-40
Humidity at 30O C environment temperature
%
85
85
85
85
85
Energy conversion efficiency
%
>93
>93
>94
>94
>93
Co Emissions
Mg/m3
<300
<300
<300
<300
<300
Temperature of the flue gas
C
91
91
129
131
119
Max. water temperature
C
90
90
90
90
90
Display
Pellet Bunker
Auger
Exhaust gas fan
Combustion
Chamber
Igniter
MANUAL
cleaning system
turbulators
Automatic
combustion
chamber cleaning

5
Mareli Systems
3. ASSEMBLY
3.1 General conditions.
All national, regional and European requirements for safe operation of the appliance
must be respected during installation and operation.
Prior to installation, load capacity of the place where the stove will be intended must be
ensured. e weight of the stove is specied in the technical data table.
To ensure the correct and safe operation of the stove, the following conditions must be
met:
e installation of the stove and its accessories must be carried out by authorized per-
sons.
e oor where the stove is installed should be at and horizontal, made of re-resist-
ant materials at least 1500 mm in front of the replace and not less than 400 mm on
both sides and at the back of the wall.
Minimum distances from the wall to the stove should be at least 400 mm. e mini-
mum space in front of the replace should be 1500 mm. e minimal distance of the
stove from combustion materials should be no less than 1500 mm.
e door of the replace should be closed tightly during the work process. Opening it
during work is absolutely forbidden.
When installing the stove, the connections between the individual pipes and the chim-
ney rooop must be dense.
When the re is rst ignited, a smell occurs as a result of the paint being heated.
e replace is painted with heat-resistant paint, which achieves its ultimate resist-
ance aer repeated use of the stove. THEREFORE KEEP OUTSIDE INTERACTIONS
WITH THE COATING TO A MINIMUM in order not to damage it.
A. A neighboring wall.
B. e rear wall.
C. Sidewall.
D. Floor protection.
E. Ignitable element.
1 = 400 (mm)
2 = 600 (mm)
3 = 400 (mm)
4 = 300 (mm)
5 = 1500 (mm)
6 = 120 (mm)
7 = 800 (mm)

6
Mareli Systems
Mareli Systems
CHECK ITEMS
BEFORE INSTALLATION
Chimney exit
Chimney
Connection to
chimney
Connection to
the stove
Security
distances
e oor
Inlet air
e chimney
revision door

7
Mareli Systems
3.2 Basic rules and prescriptions.
e stove with water jacket operates on water heating boiler principle.
e advantage of this type of heating system is the maximum utilization of the heat that is pro-
duced during the combustion process. With this method the heat from the combustion chamber
is taken to remote and hard to reach for a normal heat exchange premises in order to maintain an
even temperature and warmth comfort.
• Ensure that every branch and element of the installation is airtight at every single moment of its
exploitation.
• All elements of the installation must be protected from freezing, especially if the enlarging pot or
other parts are situated in non-heated premises.
• e circulation pump can be chosen by the capacity required by using the following formula:
G=0,043. P , (m³/h), in which:
P, kW is the heat output of the water jacket. e circulation pump can be turned on and o
by the means of a thermostat in combination with an electric switch
• e rst service cleaning of the pump’s lter must be done immediately aer testing the installation.
• If an old installation is going to be used it must be washed several times to ensure the removal of any
accumulated dirt on the surfaces of the water jacket.
• Do not drain the circulating water of the installation during the non-heated season.
• Chemical treatment of the circulating water is not recommended.
Chart 1 is a basic combined chart for heating with solid fuel stove, electrical boiler equipped with
water serpentine and a solar panel. For economy and eciency of the system and a constant avail-
ability of cheap hot water a qualied assembly of the automatic shier controlling the thermal
ows to and out of the solar panel and the boiler is required.
Chart 2 shows a one storey heating with a compulsory circulation. e advantage of this chart is
that the water-conducting elements can be hidden.
e enlarging pot must have a direct atmosphere connection which means that it must be placed
on the highest spot in the system. Its capacity can be determined as 0,1 part of the total capacity
of the system.
e lling or unloading of the system is done via a hose through a facet mounted in the lowest
area. Mounting a membrane enlarging pot is permitted when constructing a closed type system.
During the initial 3-4 start-ups a condensation on the surfaces of the water jacket may occur
which depending on the fuel’s humidity and the temperature of the incoming water may reach
0,3 litr on a single start-up. e accumulating char reduces the temperature dierence and the
condensation.
• “Mareli Systems” provides a warranty and out of warranty service and replacement of the
water jackets.
• e warranty is not valid in case of a stove with a swollen water jacket which is a result of
pressure increase in the system and improper connecting.
• e water jackets are tested under pressure of 400 kPa (4 bar).
It is recommended that the assembly is performed by an authorized specialist.
Radiator
Deaerator
Expansion vessel
Return Valve
Lyra
Boiler
Stove
Pump
RadiatorRadiatorRadiator

8
Mareli Systems
3.3 Assembly of the duct components.
Duct components and pipes
For the assembly of the duct pipes the use of non-ammable materials, resistant to the ammable
products and condensation is obligatory. e assembly must be performed in such a manner so
it guarantees the airtight sealing and prevents condensation. If possible, avoid adding horizontal
sections. Direction shi is done by using knee joints with a max angle of 45˚.
For heating devices equipped with a smoke ventilator, i.e all of the “MARELI” stoves, the follow-
ing instructions must be observed:
Chimney
e chimney or the duct component must conform with the
following requirements: to be airtight, waterproof and prop-
erly insulated, to be constructed with materials resistant to
the normal mechanical wear and to the heat coming from the
combustion products and condensation.
• To be kept away from ammable materials.
e recommended chimney dra at work - from 12-20 Pa.
• Horizontal sections must have a minimum incline
of 3° upwards;
• e length of the horizontal sections must be as
short as possible, but without exceeding 3 m;
• More than four direction shis are forbidden,
including the cases where a T-shaped element is
used;
• e duct components must be airtight and to be
insulated if extending outside the premises in
which the replace is installed;
• e duct components must allow a soot cleaning;
• e duct components must have a constant sec-
tion. A section change is allowed only in the
chimney joint;
CHIMNEY EXITS (ANTI-WIND)
45
5 m (MAX)
(MAX)
Attention!!! In case of a re hazard turn o the product from the display. is will stop the oxygen
ow to the product.
Roof incline ≥ 10 °
Height above the roof = 40 cm
90°
Distance measured at 90 ° from
roof area = 1.3 m

9
Mareli Systems
3.4 Types of connection to the chimney
Chimney exit
Moisture channel
Chimney
ermal insulation
External wall
Connection to chimney
Flue gas connection
Heat generator
“T”
connection
e chimney
revision door

10
Mareli Systems
3.5 Air intake
Suction pipe or air intake is placed in the back and has a circular section with a diameter of 48 mm.
e combustion air can be aspirated:
• From the camera, as long as it is near an air intake communicating with the outside wall having a minimum area of 100 cm2,
properly positioned and protected by a grid.
• Or by connecting directly outside with a suitable tubing having an inner diameter of 48 mm and a maximum length of 1.5 M.2
4. Cleaning
Cleaning the replace should be done only when cold. e cleaning of the combustion chamber must be carried out daily. For
this purpose, make sure the replace has ceased operation and is completely cold. Pull up the combustion pot and remove it
from the stove and then clean it from soot. When removed fuel pot at the bottom of the combustion chamber opens a hole
designed for the accumulated ash. Collect ashes in the ashtray and return fuel pot in place and then close the door. e re-
place is ready for operation.
Cleaning of ues and chimneys are conducted once every 1.5 tons of fuel used.
Once clean audits and close the cleaning lid. Check that the bolts are tightened well. Every time you open check for violations
of the isolation seal. If this happens do not use the product until the isolation seal is repaired.
12
Manual system for
cleaning the
turbulators
Automatic
combustion
chamber cleaning

11
Mareli Systems
Clean the ue gas
outlet
Cleaning the glass
Use an non-abrasive
cloth
Cleaning the
pellet bunker
Combustion
chamber
Clean the
ashtray

12
Mareli Systems
5 Safety and unexpected risks
Terms of danger may arise in the following cases:
• Automated pellet stove is used incorrectly;
• e unit is installed by unqualied personnel;
• e safety instructions described in this management are not met;
Unforeseen risks:
Pellet replace “Mareli” has been designed and manufactured in accordance with the safety re-
quirements on the national, regional and European levels. Although considered possible risks
arising from improper use, you may experience the following risks:
• Risks of spreading combustion outside replace - opening the door of the chamber of the
replace may fall hot / burning particles (as hot ash and small particles burning coal), which
could lead to a re in the heated room. It is therefore necessary that the product always works
with a tightly closed door. It can only be opened when the product has completely cooled
down;
• Risks of burns caused by high temperatures as a result of the combustion process in the
combustion chamber and / or access to the door of this burn chamber when the product is
not completely cool;
In case of re hazard the product should be stopped by the controller and power supply until the
cause of the problem is determined.
Maintenance program
At each
ignition
Twice
per season
Weekly Annual
Combustion chamber
Clean the ashtray
Glass
e Door
Clean the ue gas outlet
Door seals
Chimney
V
V V
V
VV
V
V
V

13
Mareli Systems
K400 TOUCH SCREEN
DISPLAY
1. HOMEPAGE
Errors CodeDate & Time
HOMEPAGE 1/2
Main
Temperature
Main
ermostat
Functioning
State
ON/OFF Settings Display Info Chrono
11:24 Fri 14 Oct 2016
65°
21°
C
IGNITION
Er.01

14
Mareli Systems
Main Commands
In order to go to Homepage 2 a horizontal swipe must be performed to the
right side of the screen.
12:18 Fri 14 Oct 2016 Er.01
Igniter
Pump 3
Auger
Aux1
Pump 1
Aux1
Pump 2
Aux3
HOMEPAGE 2/2
L6 L7 L8
System activity LEDS
e Quick visualization of the system main function is accessed through a
vertical swipe to the top side of the screen.
SPECIAL LEDS
65°
22°
C
IGNITION
12:18 Ven 14 Ott 2016 Er52
Function
Winter
Mode Power Chrono
Wood PA Week ly
Winter
Wood/Pellet
Pellet
Wood Chrono enable
Chrono disable
Summer

15
Mareli Systems
Quick visualization of the system main function
2. ERROR LIST
Blocking or non-blocking error
is highlighted with a and the
related error code. When pressed
the error window opens
12:18 Fri 14 Oct 2016
65°
21°
C
IGNITION
Er.01
Er10 10:50
11:20
11:20
11:20
11:20
Er 53
Er 53
Er 53
Er 53
Error List
By clicking on ( ) you can see
the errors stored by date / time
and description
Scroll to unlock
Error 16 - Auger speed regulation failure
When this message is on screen
this means that the product is in
blocking mode and you can remove
the error. You can do this by swiping
to the right in the center of the
screen.

16
Mareli Systems
Blocking / Removing Error
4. MAIN COMMANDS
ON/OFF Menu
65°
IGNITION
Swipe to Ignite Screen image :
• System power ON
• System power OFF
• Alarms reset
Display Menu
PANEL
SETTING
DISPLAY MENU
SYSTEM MENU
Display Menu
11:24 Ven 14 Ott 2016
65°
21°C
IGNITION
Er.01
In this screen you can view all the
variables of the control panel.
Furthermore, it is possible to
access the SYSTEM MENU which
is reserved exclusively for technical
personnel.
Settings Menu
12:18 Ven 14 Ott 2016
28°
22° C
RECUPERO ACCENSIONE
Er52
12:18
Ven 14 Ott 2016
28°
22°
C
RECUPERO ACCENSIONE
Er52
COMBUSTION HEATING REMOTE PANEL MANUAL
LOADING
RESET
SERVICE
Setting Menu
11:24 Ven 14 Ott 2016
65°
C
IGNITION
Er.01
From this screen it is possible
to view all the variables for the
proper functioning of the heating
system.
Info Menu
Water Pressure
Smoke Temperature Boiler Temperature Buer
Temperature
OxygenExhaust pressure
Security Temperature
FreqAC
31 °C
19 mBar
64 °C
103 mBar
20 ° C
0.4 %
210 °C
2.0 Hz
Info Menu
11:24 Ven 14 Ott 2016
65°
IGNITION
Er.01
From this screen it is only possible
to display the values of all inputs
and outputs.

17
Mareli Systems
5. CHRONO
12:18 Ven 14 Ott 2016
28°
22°C
RECUPERO ACCENSIONE
Er52
12:18
Ven 14 Ott 2016
28°
22°
C
22°C 22°
RECUPERO ACCENSIONE
Er52
RECUPERO ACCENSIONE
WEEKLY
RECUPERO ACCENSIONE
22°
22°
22°
22°
22°
22°
22°
22°
22°
22°
22°
22°
22°
22°
22°
22°
22°
22°
22°
22°
22°
22°
22°
22°
22°
22°
22°
22°
22°
WEEKEND
DAILY
Chrono - Daily
65°
IGNITION
CHRONO
To select the desired CHRONO
program, press on the respective tabs:
• Daily
• Weekly
• Weekend.
To change the chrono program, press
on .
If the Chrono function is disabled all the
tabs are grey.
DAILY
Wednesday
Tuesday
Friday
ursday
Saturday
03:15 - 04:30
09:00 - 11:30
21:15 - 23:30
DAILY
03:15 - 04:30
09:00 - 11:30
21:15 - 23:30
Start Stop
01
02
04
03
05
15
30
00
45
15
02
03
05
04
06
00
15
45
30
00
To edit the time slots, press on the
corresponding Frame Time.
Scroll Up or Down to change the System
on/o Time
5. INTERNAL MENU STRUCTURE
Potenza Pellet 5
5
5
5
Ricetta Pellet
Calibrazione Coclea
Calibrazione Ventilatore
Gestione Combustione
Potenza Pellet
5
Gestione Combustione
Pellet Recipe Boiler ermostat
5
50 80
65
63
64
66
67
Potenza Pellet 5
5
5
5
Ricetta Pellet
Calibrazione Coclea
Calibrazione Ventilatore
Gestione Combustione
Potenza Pellet
5
Gestione Combustione
Pellet Recipe Functioning states
Pellet
Combi
Wood
Here are the types of interface used to access, select and modify menu items.
Pellet Power P1
1
3
5
Pellet Recipe
Auger Calibration
Combustion Fan Settings
Combustion

18
Mareli Systems
5. INTERNAL MENU STRUCTURE
From the display Menu the user can access the panel settings and select one of 24
languages.
Brightness.
Minimum brightness: this function allows you to choose the minimum brightness
level which the device automatically sets to aer 30 sec. of inactivity.
Standby display: if enabled, this function will set the screen to standby aer 1 minute
of inactivity.
Control panel address: password-protected menu (1810) and used to set the control
panel address.
In modbus, the address reserved for the local control panel is 16. e address of the
rst remote control panel is 17 and subsequently the others according to the number
provided by the system.
Control panel restart: this function allows the control panel to be restarted.
Sound: this function allows the user to enable / disable the sounds emitted from the
control panel.
Delete error list: this password protected function (the same as in the technical menu)
allows the user to delete the list of errors recorded by the control panel. e errors
recorded are 64.
Nodes list: this menu allows the user to view all the devices connected via Modbus, with their
related rmware and revision.
Wallpaper: menu used to select wallpapers loaded in the device. 8 backgrounds are available.
Control panel info: this menu allows the user to view the rmware and revisions that make up
the control panel in detail.

19
Mareli Systems
The main frame shows:
time and date, chrono activation, combustion
power and recipe, functioning state, error code,
main temperature, main thermostat,
summer/winter mode.
Button
Function
P1
P2
P3
P4
P5
P6
Exit Menu/Submenu;
Ignition and extinguishing (push for 3 seconds), Reset errors (push for 3 seconds), Enable/disable chrono;
Enter in User Menu 1/submenu, Enter in User Menu 2 (push for 3 seconds), Save data;
Enter in Visualizations Menu, Increase
Activation chrono time band
Enter in Visualizations Menu, Decrease
Led
Function
D1
D9
D2
D10
D3
D11
D5
D12
Auger ON
V2: Pump 1 ON
R: Igniter ON
Aux2: Pump 2 ON
External Chrono reached
Lack of pellet
Local Room Thermostat reached
Sanitary water demand
Er01 - Security Error High Voltage 1. It may also intervene with the system o;
Er02 - Security Error High Voltage 2. It can only intervene if the Combustion fan is active;
Er03 - Extinguishing for low exhaust temperature or missing light in the brazier;
Er04 - Extinguishing for water over temperature;
Er05 - Extinguishing due to high exhaust temperature;
Er06 - Pellet Thermostat open (ame return from the brazier);
Er07 - Encoder Error. The error may occur due to lack signal from Encoder;
Er08 - Encoder Error. The error can occur due to problems of adjustment of the number of revolutions;
Er09 - Water pressure low;
Er10 - Water pressure high;
Er11 - Clock Error. The error occurs due to problems with the internal clock;
Er12 - Extinguishing for ignition failure;
Er15 - Extinguishing due to power failure for more than 50 minutes;
Er16 - RS485 communication error (Display);
Er17 - Adjusting the Air Flow Failed;
Er18 - No more Pellet in the bunker;
Er23 - Boiler probe or Back boiler probe or probe Buer open;
Er25 - Engine cleaning brazier broken;
Er26 - Engine cleaning broken;
Er27 - Engine cleaning 2 broken;
Er34 - Depression below the minimum threshold;
Er35 - Depression above the maximum threshold;
Er39 - Sensor Flowmeter broken;
Er41 - Minimum air ow in Check Up is not reached;
Er42 - Maximum air ow exceeded;
Er44 - Open door error;
Er47 - Error Encoder Auger: missing signal Encoder;
Er48 - Error Encoder Auger: Auger regulation speed not achieved;
Er52 - Error Module I/O I2C;
Er57 - Test ’Forced Draught High’ in Check Up fail ;
Service - Service error. It noties that the planned hours of functioning is reached. It is necessary to call for service.
ALARMS
CONTROL PANEL: USE AND FUNCTIONS
Description
Code
Sond
Hi
Clean
Port
Ignition
block
Cleaning on
Link Error
Anomaly of the probes checking, during Check Up phase.
Room temperature greater than 99 °C.
This message noties that the planned hours of functioning are reached.
Door Open.
The message appears if the system is turned o during Ignition (after Preload) not manually:
the system will stop only when it goes in Run Mode.
Periodical Cleaning in progress.
No communication between motherboard and keyboard
MESSAGES
Exhaust T. [°C] - Exhaust temperature;
Room T. [°C] - Local room temperature; it is visible only if;
Buer T. [°C] - Buer Temperature;
Pressure [mbar] - Water pressure;
Air Flux - Air ow;
Fan Speed [rpm] - Exhaust fan speed;
Auger [s] - Auger work time;
Recipe [nr] - Combustion recipe set;
Product Code: 510 - Product code;
VISUALIZATIONS
USER MENU 1
Combustion Management
Power - In this menu is possible to modify the combustion power of the system. It can be set in automatic or
manual modality . In the rst case the system chooses the combustion power. In the second case the user selects
the desired power. On the left side of the display are signalled the combustion modality (A=automatic combustion,
M=manual combustion) and the working power of the system.
Recipe - Menu to select the combustion recipe. The maximum value is the number of recipes visible to the user.
Auger Calibration - It allows to modify the value set in rm of Auger’s speed or On times. The values are in the
range – 7 ÷ 7. The rm’s value is 0.
Fan Calibration - It allows to modify the value set in rm of Combustion Fan’s speed. The values are in the range
– 7 ÷ 7. The rm’s value is 0.
Heating Management
Boiler thermostat - Menu to change the value of the boiler thermostat .
Buer thermostat - Menu to change the value of the Buer Thermostat.
Room Thermostat - This Menu allows to modify the Local Room Thermostat’s value. It is visible only if the ambient
probe is select.
Summer-Winter - Menu that allows the selection Summer-Winter.
Manual Load
The procedure activates the pellet manual loading with activation in continue modality of the Auger engine. The
loading is stopped automatically after 600 seconds. The system must be OFF for the function can be activated.
Cleaning Reset
Menu to reset the ‘System Maintenance 2’ function.

20
Mareli Systems
1
2N
L
LINEA
3
4FF
NN
V1
5
6FF
NN
V2
7
8FF
NN
P/V3
9
10F
N
R
11
12
13
14
H1H2
15
16
C
FF
NN
17
18F
N
19
20
AUX 2
COM
N.C.
21N.O.
22
23
AUX 1
N
F
24
OFF
FON
RS485CN1
45 44 43
GND
S8
+Vc
IN 8
26
25 +
IN 1
28
27 GND
S2
IN 2
30
29 GND
S3
IN 3
32
31 GND
S4
IN 4
35
34
33
GND
S5
+V
IN 5
38
37
36
GND
S6
+Vc
IN 6
39
+V
42
41
40
GND
S7
+V
IN 7
RS232
47
46
49
48
51
50
52
54
53
47
46
49
48
51
50
52
54
53
AUX 3
COM
N.O.
GND
S9
GND
S10
S11
+Vc
+V
IN 9IN 10-11
POWER CABLE
COMBUSTION
FAN
PUMP 1
IGNITER
WATER OVERHEATING
PROTECTION
AUGER
THREEWAY
VALVE
OR PUMP 2
DISPLAY
EXHAUST
PROBE
ROOM
THERMOSTAT
BOILER
PROBE
BUFFER PROBE
PROGRAMMER
TURBULATOR CLEANING MOTOR
FAN ENCODER
GND
+V
VOUT
FUSE
MOTOR FOR
CLEANING MECHANISM
PROTECTION
RETURN FLAME
AUX1
BOMBA P2
22
23
N
F
24
OFF
FON
WHITE
BLUE
RED
RED
WHITE
SENSOR OF
WATER
PRESSURE
AIR FLOW SENSOR
BLACK
BROWN
RED
ONYX HYDRO (MB250)