Mareli PB18 User manual

1
PB18 Pellet stove assembly and exploitation manual
The present stove is designed and manufactured according to
Standards:
BNS (Bulgarian National Standard) EN 14785-2006

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Observing the prescriptions of the present manual is in the user’s favor and is one of
the warranty conditions.
Compliance with this instruction is in the interest of the consumer and one of the
warranty terms.
INSTRUCTIONS FOR SECURITY:
- This appliance is not intended for use by persons (including children) with limited physical,
sensory or mental abilities or lack of experience and knowledge. The installation must be
performed by a qualified expert in the field of heating installations or authorized by "Marelli
Systems' service. The place and way of connecting the stove should be selected carefully in
accord with the safety instructions. Install away from flammable objects!
- Before starting any operation, the user must read and fully understand the contents of this
instruction 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 fireplace 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 fireplace. Fire hazard;
- The 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 persons 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, flue 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 fire be ignited with the door open or broken glass;
- The product must be electrically connected to a system equipped with an effective earth
conductor. (Must be grounded);
- Turn off the stove in case of failure or malfunction;
- All unburned pellets in the burner after each unsuccessful attempt ignition must be removed
before a new ignition;
- When installing the product all fire safety requirements must be respected
- If there is a fire in the flue pipe, extinguish the stove, disconnect the power cord and never
open the door. Call competent authorized service technicians;
- Do not light the stove with flammable materials if the ignition system failed;
- Periodically check and clean the smoke outlet ducts of the stove (connection to the flue pipe);
- Pellet stove is not cooker;
- Always keep the cover closed;
Safe distances:
When installing the product a safe distance of at least 600 mm must be respected. This distance
applies to the product located near materials of B or C flammability level. The safe distance is
doubled if the product is close to materials of C3 combustion level.

3
1. Purpose
The stove is purposed to heat domestic and public premises by the means of pellets. The
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.
The stove is designed and manufactured to work with A-class pellets only
( DIN plus 51731 ) with the following characteristics:
-Material 100% pure conifer or broadleaf wood;
-Diameter Ф6/8 mm;
-Length 20-30mm;
-Calorie capacity 5.2 kW/kg;
-Ash content < 8%;
The use of pellets with characteristics different from the recommended may result in power
decrease, unstable and inconsistent work of the stove.
What are the pellets.
The pellets are produced by compressed wooden waste left from the production of various
furniture, sawmills and others. This type of fuel is environmentally friendly because in the
production process no agglutinant agents (glues, resins and others) are added. Actually, 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.
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 noncombustible container;
3. Close the lid of the bunker;
Attention!!!
Use gloves! Beware of hot surfaces!

4
2.Technical data
MAXIMAL CAPACITY
KW
18
HEATED AREA UP TO
m³
350
HEIGHT H
mm
1010
WIDTH W
mm
568
DEPTH D
mm
665
MAX. PELLETS LOAD
kg
30
AIR INLET
ф mm
48
FUME EXHAUST OUTLET
ф mm
80
WEIGHT
kg
180
FUEL
Pellets ф6-ф8
THE CHIMNEY DRAFT
Pa
12
MIN/MAX FUEL CONSUMPTION PER H
kg/h
1,6-6,0
POWER CONSUMPTION
V/Hz
60/310
ELECTRIC POWER SUPPLY
V/Hz
230/50
VOLUME WATER
L
41
PRESSURE
bar
0,5-2,0
MAX POWER WATER JACKET
Kw
17
WORKING ENVIRONMENTAL TEMPERATURE
C
5-40
HUMIDITY LEVEL, WORKING RANGE 30 C
%
85
EFFICIENCY
%
>91
CO EMISSIONS
ppm
<383
TEMPERATURE OF THE FLUE GAS
C
160
MAX WATER TEMPERATURE
C
90
3.Assembly

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3.1 General conditions.
For ensuring the proper and safe work of the stove the observation of the following prescriptions
is required:
The assembly of the stove and the related equipment must be performed by authorized personnel
only.
The foundation upon which the stove is going to be placed must be even and horizontal, made out
of non-flammable materials with a dimension of at least 40 cm. in front of the stove and not less
than 20 cm from both sides and the rear side.
If flammable materials or constructions are present, the distance between them and the stove must
be at least 80 cm.
When assembling the stove make sure that the joints between the separate pipes and the chimney
socket are well insulated.
A smell on first startup of the stove is due to the burning of the paint.
The stove is painted with thermal resistant paint which reaches its final resistance after a couple
startups and warm ups. THAT IS WHY THE OUTER SURFACES MUST NOT BE TOUCHED
in order to avoid damage to the casing.
The periodic cleaning of the ash tray must be done only when the stove is cold.
3.2 Basic rules and prescriptions.
The stove with water jacket operates on water heating boiler principle.
The advantage of this type of heating system is the maximum utilization of the heat that is
produced 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.
1. Ensure that every branch and element of the installation is airtight at every single moment
of its exploitation.
2. All elements of the installation must be protected from freezing, especially if the enlarging
pot or other parts are situated in non-heated premises.
3. The 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. The circulation pump can be turned on and off
by the means of a thermostat in combination with an electric switch
5. The first service cleaning of the pump’s filter must be done immediately after testing the
installation.
6. 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.
7. Do not drain the circulating water of the installation during the non-heated season.
8. Chemical treatment of the circulating water is not recommended.

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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 efficiency of the system and a constant
availability of cheap hot water a qualified assembly of the automatic shifter controlling the
thermal flows to and out of the solar panel and the boiler is required.
Chart 2 shows a one storey heating with a compulsory circulation. The advantage of this
chart is that the water-conducting elements can be hidden.
The 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.
The filling or unloading of the system is done via a hose through a faucet mounted in the
lowest area. Mounting a membrane enlarging pot is permitted when constructing a closed type
system.
During the initial 3-4 startups 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 startup. The accumulating char reduces the temperature difference and the
condensation.
-“Mareli Systems” provides a warranty and out of warranty service and replacement
of the water jackets.
-The 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.
-The water jackets are tested under pressure of 400 kPa (4 bar).
It is recommended that the assembly is performed by an authorized specialist.
Chart 1
3.3 Assembly of the duct and duct components.
Duct components and pipes
For the assembly of the duct pipes the use of non-flammable materials, resistant to the
flammable products and condensation is obligatory. The assembly must be performed in such a
manner so it guarantees the airtight sealing and prevents condensation. If possible, avoid adding
horizontal sections. Direction shift 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
following instructions must be observed:
Horizontal sections must have a minimum incline of 3° upwards;

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The length of the horizontal sections must be as short as possible, but without exceeding 3 m;
More than four direction shifts are forbidden, including the cases where a T-shaped element is
used;
The duct components must be airtight and to be insulated if extending outside the premises in
which the fireplace is installed;
The duct components must allow a soot cleaning;
The duct components must have a constant section. A section change is allowed only in the
chimney joint;
Chimney
The chimney or the duct component must conform with the following requirements: to be
airtight, waterproof and properly 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 flammable materials.
The recommended chimney draft at work - from 12-20 Pa.
Attention!!!
In case of a fire hazard turn off the product from the display. This will stop the
oxygen flow to the product.
4. Cleaning
Cleaning the fireplace should be done only when
cold. The cleaning of the combustion chamber must
be carried out daily. For this purpose, make sure the
fireplace 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. The fireplace is
ready for operation.
Cleaning of flues and chimneys are conducted once
every 1.5 tons of fuel used.
Cleaning of flues:
1. Open the top cover of the fireplace by
pulling it up;
2. Loosen the screws on the lid for cleaning
(key number 10);
3. Remove decorative shutters;

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4. Loosen the screws on small and large revision
door;
5. Cleaning flues:
Remove the Turbulators channels and clean
them
Use appropriate cleaning tools.
Clean ash that has fallen through (part of
the ash falls into the combustion chamber);
6. 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.
5 Safety and unexpected risks
Terms of danger may arise in the following cases:
• Automated pellet stove is used incorrectly;
• The unit is installed by unqualified personnel;
• The safety instructions described in this management
are not met;
Unforeseen risks:
Pellet fireplace "Mareli" has been designed and manufactured in accordance with the safety
requirements 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 fireplace - opening the door of the chamber of the
fireplace may fall hot / burning particles (as hot ash and small particles burning coal), which could
lead to a fire 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 fire hazard the product should be stopped by the controller and power supply until the
cause of the problem is determined.

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Controller for Pellet Combustion System
UniPelGD/EasyPel/Proxel
The manual is intended for end users
Front panel
UnipelGD EasyPel
The front panel is shaped as a separate module with a display and five control buttons.
The front panel is shaped in a module with a
display, four control and timer buttons.
Description of the control panel:
#
Unipel GD
Easypel
1
Display
2
Decrease (-) / an arrow down
3
Increase (+) / an arrow up
4
Selection of desired operational level
5
Switching on/off and exit
Switching on/off and confirmation "OK"
6
Confirmation "OK"
Exit and selection of a level for the int. fan Not
used at H2O mode

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Description of the screens
The main screen is designed in two versions of the displayed information - selectable by the user.
- basic
- service/diagnostic
Additionally, the text messages are changed according to the language selected.
The additional screens are used for set-up and check-up of the system's work at:
-Switching on/off
-Setting up of desired temperature inside the boiler
-Setting up of desired temperature inside the hot water supply
-Selection of the maximum operational level
-Checking up of the system condition
-Main menu for basic settings
-Service menu for system parameter setting
1. Main screen # 1

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#
Description
Visualization
Explanation
1
System's condition
ON
''On'' condition
OFF
''Off'' condition
2
Operational mode icon
15
Text message for the operational mode
2 /
15
Operational mode and messages
Description
Text message
In a graphic
symbol
STOP
The system's operation is stopped
PAUSE
The system's operation is temporarily
interrupted - the desired temperature
has been reached or the indoor
thermostat is switched off
ALARM
/
An alarm is activated - a problem in the
system's operation, detailed information
is available in the Alarms screen
EXTING./RESTART
Venting of the working chamber, with a
subsequent de-activating, restarting
CLEAN
The cleaning system is activated
IGNITE
Lighting the fire
IGNITE2
Relighting the fire
STABIL.
Stabilization of burning
HEAT
Combustion
EXTING.
/
Burning out of fuel with a subsequent
switching off
HEAT / CLEAN
/
Cleaning during main operation
3/4
Momentary flame value
indication
At photo-sensor - illuminance.
At flue gases - temperature.
5
Flue gases temperature -
coefficient of performance
120’с
Additional indication of flue gases'
temperature when working with a photo-
sensor.
6
Setting of the desired
temperature inside the boiler
65’с
7
Visualization of the separate elements' operation at diagnostic mode, code=1
Fan power

12
Feeding screw
Circulation pump
Ignition stick
Cleaning
8
Maximum operational level set
and momentary system degree
From bottom - maximum level -
4, from top - operational level - 2
9
Current temperature inside the
boiler
23’с
- temperature
- ‘SC’ : short-circuited sensor
- ‘NO’ : interrupted sensor
10
Internal fan operational level -
for air-operated fireplace
11
Outer alarm activated
12
Temperature at hot water
supply
45’с
- hot water supply temperature
- ‘SC’ : short-circuited sensor
When sensor is missing the value is not
visualized
13
Hot water supply pump
operation
The symbol blinks at operation, hot
water supply is not visualized if sensor is
missing
14
Inlet condition from indoor
thermostat
If symbol is shown, the indoor
thermostat is switched off
If the indoor thermostat is active, the
symbol is not shown
Screen # 2 for switching on/off.
If switching on/off button is pressed and hold, this
screen is visualized to suggest that the system
condition will change from ON to OFF or
backwards
Pos. 16 - New condition
* Please hold ON/OFF button until state is changed

13
Screen # 3: for changing of minimal temperature
to start circulation pump.
Pos. 17с – Minimal temperature to start circulation
pump
Screen # 4: for changing of desired temperature if system type is HYDRO.
Select this screen using +/- (B2/B3) buttons.
Press OK button on this screen to activate change of
the desired temperature - the value will start blinking,
set the desired temperature using +/- (B2/B3) buttons
and confirm using ОК.
Pos. 17 - Desired temperature inside the boiler
Pos. 17a –Temperature to stop combustion
Pos. 17b –Current season selection –
Summer/Winter
Screen # 4a: for changing of the desired fan's operational level in air-operated
fireplace.
Pos. 19a. Room temperature
Select this screen using +/- (B2/B3) buttons.
Press Ok button on this screen to activate change of
the desired temperature - the value will start blinking,
set the desired temperature using +/- (B2/B3) buttons
and confirm using ОК.
Screen # 5: for changing of desired temperature for hot water supply.
Select this screen using +/- (B2/B3) buttons.
Press Ok button on this screen to activate change of
the desired temperature - the value will start
blinking, set the desired temperature using +/-
(B2/B3) buttons and confirm using ОК.
Pos. 18 - Desired temperature of hot water supply
–Temperature to stop combustion
–Current season selection (Summer/Winter)

14
Screen # 6: for changing of the desired fan's operational level in air-operated
fireplace.
Select this screen using +/- (B2/B3) buttons.
Press Ok button on this screen to activate change of
the desired fan speed - the value will start blinking,
set the desired fan speed using +/- (B2/B3) buttons
and confirm using ОК.
Pos. 19 - Desired level of operation
Screen # 7: for setting of timer zone operation function.
Select this screen using +/- (B2/B3) buttons.
Pos.20: Setting of operational time zones - Time zone
1 and Time zone 2.
Pos.21: Enable/Disable time zone operation
- If Enabled –symbol is active.
- If Disabled –symbol is have „Х” blinking.
Note: If system is EasyPel this function is available
only with expansion unit EB7/2C
Enable/Disable timer zones: Press Ok button to select time zone change, symbol will go
inverse . Use +/- (B2/B3) to change state (do not use OK to confirm!)
Change of timer zones: Press Ok button two times. Time zone 1 start time will blink. Use +/-
(B2/B3) to set time. Confirm each time zone by OK
Screen # 8: for adjusting of current time .
Select this screen using +/- (B2/B3) buttons.
Press Ok button to select hour then press OK button
to select minutes - the selected value will start
blinking, set selected value using +/- (B2/B3)
buttons and confirm using ОК.
Pos.22: Current time
Note: If system is EasyPel this function is available
only with expansion unit EB7/2C

15
Screen # 9: for mixing valve output temperature .
Select this screen using +/- (B2/B3) buttons.
Press Ok button on this screen to activate change of
the sett temperature - the value will start blinking, set
the desired value using +/- (B2/B3) buttons and
confirm using ОК.
Pos 26: Input temperature of boiler
Pos 23: PreSet temperature
Pos 24: Current output temperature
Pos25: Position of valve.
Screen # 10: system messages or
current alarms, alarms archive .
Pos 20: Messages
SYSTEM MESSAGES,
ALARMS AND TROUBLESHOOTING
E
MESSAGE
DESCRIPTIO
N
POSSIBLE CAUSE
POSSIBLE SOLUTION
0
SYSTEM
OK
Everything is in good working condition, no alarms
1
Е1
BAD H2O
SENZ
Problem
detected with
temperature
sensor of boiler
or room
(depending of
application
HYDRO/AIR)
1. No sensor or sensor
short circuit
2. Defective sensor
3. Temperature
reading is extreme low
or extreme high
4. Defective control
board
1. Check sensor’s cable and
board terminal
2. Check temperature by other
means
3. Check sensor and replace if
needed.
4. Replace control board if
needed
2
Е2
BAD FLUX
SENZ
Problem
detected with
temperature
sensor of flux
gas
1. No sensor or sensor
short circuit
2. Defective sensor
3. Temperature
reading is extreme
high
4. Defective control
board
1. Check sensor’s cable and
board terminal
2. Check temperature by other
means
3. Check sensor and replace if
needed.
4. Replace control board if
needed
3
Е3
BAD
IGNITION
Un successful
ignition
1. Fuel is consumed
2. Combustion pot is
placed in a wrong way.
3. Igniter failure
4. Excess/Less air
supplied
5. Wrong set of
1. Load up fuel and fill up
feeding screw.
2. Place combustion pot correctly
3. Check igniter operation and
replace if necessary
4. Check fuel quantity during
ignition

16
parameters
5. Check air
6. Check parameters
4
Е4
FLUX
OVERHEA
T
Flux
temperature
readed is very
high
1. Excess flue gas
temperature
2. Wrong set of
parameters
3. Defective flux
sensor
1. Check parameters.
2. Check sensor’s position
3. Replace sensor
5
Е5
ALARM
INPUT
The input for
external Alarm
is activated (no
connection)
1. Overheating - back
fire
2. Overheating of
pellet bin
1. Chimney is stuck
2. Pellet house is loose
3. Other technical failure
6
Е6
BAD LINE
230V
Power supply is
of bad quality
1. Frequency
supplied or voltage is
bad
2. Applied UPS or
generator is not
sinusoidal or frequency
is out of ±5% limits
3. Defective
control board
1. Supply the unit from normal
mains outlet 230V/50Hz
2. Use pure sinewave UPS or
generator with frequency
regulation to match ±5% limits
(48Hz52Hz)
3. Replace control board if
needed
7
Е7
BLOCKAG
E
Cleaning is
stuck
Not implemented
SWITCHING ON AND OFF THE SYSTEM
1. Press and hold the ON/OFF (B5) button for 4-5 seconds (until you select the desired mode).
* Screen # 2 will be visualized.
SETTING THE DESIRED TEMPERATURE INSIDE THE BOILER
1. Select screen # 3 by pressing +(B3) button once.
2. Press OK button.
3. Correct the value by + and - (B2/B3) buttons.
4. Confirm the change by ОК.
5. Go back to the main screen by pressing - (B2) button once.
SETTING THE DESIRED TEMPERATURE FOR HOT WATER SUPPLY
1. Select screen # 4 by pressing + (B3) twice.
2. Press OK button.
3. Correct the value by + and - (B2/B3) buttons.
4. Confirm the change by ОК.
5. Go back to the main screen by pressing - (B2) button twice.
RECOVERY AFTER ALARM
1. Remove the alarm source.
2. Press OK button.
Service screen # 7
Select this screen by holding + and - (B2/B3) buttons. Select the desired item by using + and -
(B2/B3) buttons, confirm the selection by ОК, correct the value by + and - (B2/B3) buttons
and confirm the change by ОК, select EXIT to exit this mode.

17
“SYSTEM SETINGS”
MAIN MENU
Description
0.0s
MAN/FEED
Selected element is “Manual Feeding”
Press OK to initiate manual feeding for 10 sec.
FUEL/AIR
MODE
PARAMETER
EXIT
LANG/ЕЗИК
CODE 01-JUN15
MAIN MENU
Description
100/100
MAN/FEED
Selected element is “AIR/FUEL”
Adjust air/fuel ration during heating.
FUEL/AIR
MODE
PARAMETER
EXIT
LANG/ЕЗИК
CODE 01-JUN15
MAIN MENU
Description
MAN/FEED
Selected element is –„MODE”
Select current season SUMMER / WINTER, room
thermostat operational mode, deice protection
and pump operation.
FUEL/AIR
MODE
PARAMETER
EXIT
LANG/ЕЗИК
CODE 01-JUN15
MAIN MENU
Description
MAN/FEED
Selected element is –„PARAMETERS”menu
Press OK to reach system parameters
FUEL/AIR
MODE
PARAMETER
EXIT
LANG/ЕЗИК
CODE 01-JUN15
MAIN MENU
Description
MAN/FEED
Selected element is –EXIT to main menu
Press ОК to go back to main menu
FUEL/AIR
MODE
PARAMETER
EXIT
LANG/ЕЗИК
CODE 01-JUN15

18
MAIN MENU
Description
001
MAN/FEED
Selected element is –“CODE” access code
Set correct CODE to access certain parameters.
Displays software date
FUEL/AIR
MODE
PARAMETER
EXIT
LANG/ЕЗИК
CODE 01-
JUN15
2. Setting of system’s mode
Please make sure all settings match exactly installed heating systems. This is very important for
correct operation of all logics and priorities used.
To maximize flexibility if possible use two separate pumps for heating and hot water supply (P2).
MODE
Description

SUMMER
Selected element is „SUMMER”. Press ОК to confirm
The symbol „” shows which the selected season –in
this case „SUMMER”.
WINTER
AUTO
ANTI ICE
STOP
ROOM TERM.

DHW=P2/
EXIT
Operation during season „ SUMMER”:
System operates according to following notes:
-Boiler temperature changes with respect to DHW’s temperature settings.
-Room thermostat is ignored
-Both temperatures of DHW and boiler determine the conditions for boiler ignition/extinction.
-If DHW mode is selected as “P2”, the main pump (P1) will not be activated, only P2 is
activates
-If DHW mode is selected as valve ” ” , the main pump (P1) will be activated together with
P2. It is necessary to manually cut the circulation for heating circuit.
MAIN MENU
Description
EN
MAN/FEED
Selected element is –“Language” –English (EN)
Changes used language for texts
FUEL/AIR
MODE
PARAMETER
EXIT
LANG/ЕЗИК
CODE 01-JUN15

19
MODE
Description
SUMMER
Selected element is „WINTER”. Press ОК to confirm
The symbol „” shows which the selected season –in
this case „WINTER”.

WINTER
AUTO
ANTI ICE
STOP
ROOM TERM.

DHW=P2/
EXIT
Operation during season „ WINTER”:
System operates according to following notes:
-Room thermostat input is used to control boiler operation
If Room Thermostat mode is selected as “TANK+ROOM TERM.”
- if DHW tank temperature goes below the DHW set value and boiler temperature is not
sufficient and boiler is extinguished a new ignition is initiated no matter of room thermostat’s
state.
- If DHW tank temperature reaches DHW set value and room temperature is fine (ROOM
THERMOSTAT is OFF) –the boiler is extinguish no matter of boiler’s temperature
If Room Thermostat mode is selected as “STOP ROOM TERM.”
- system’s operation is according to room temperature (ROOM THERMOST’S STATE) and
temperature setting of boiler.
- the temperature of DHW tank cannot initiate systems ignition or extinction.
MODE
Description
SUMMER
Selected element is –„ANTI ICE”. Press ОК to change
this function operation state
„AUTO/OFF”–the function is selected
Set to „AUTO” to activate anti ice function
Set to „OFF” to deactivate anti ice function
* Function: Automatic ignition of system if temperature
reads < 5’С

WINTER
AUTO
ANTI ICE
STOP
ROOM TERM.

DHW=P2/
EXIT
MODE
Description
SUMMER
Selected element is –„ROOM TERMOSTAT”. Press ОК
to change this function operation state
„STOP/TANK+” –the function is selected
Set to:
- „STOP” to control by priority by external room thermostat
-„TANK+” to combine the operation of external room
thermostat and sanitary water tank temperature

WINTER
AUTO
ANTI ICE
STOP
ROOM TERM.

DHW=P2/
EXIT
* Sets systems operation and relations between temperatures of boiler, sanitary tank and room
thermostat

20
Note: please check operation during “WINTER”
MODE
Description
SUMMER
Selected element is –„Type of DHW output”. Press ОК
to change this function operation state
„ /P2”–the function is selected
Set to:
- „P2” if two pumps are available (P1 for circulation of
heating and P2 for DHW tank)
- „” systems with only one pump

WINTER
AUTO
ANTI ICE
STOP
ROOM TERM.

DHW=P2/ ..
EXIT
Notes:
-If you set DHW output controls a pump (P2) the main pump (P1) can be activated
independently of DHW pump output
-If you set DHW output controls un electrical valve () the main pump (P1) is activated
together with DHW valve output.
MODE
Description
SUMMER
Selected element is –„EXIT”.
Press OK to go back to previous menu

WINTER
AUTO
ANTI ICE
STOP
ROOM TERM.

DHW=P2/
EXIT
3. Operating parameters
PARAMETERS
Description
Parameter name
[number]
Select the desired parameter by + and - (B2/B3) –the
parameter number will keep changing.
Confirm by B6 button.
Change the VALUE by + and - (B2/B3) buttons.
Confirm correction by B6.
To EXIT press B5 button.