Kober Green 24 User manual

KÖBER SRL VADURI BRANCH
USER MANUAL
CONDENSING GAS BOILER
C34GV24-P
C34GV28-P
Image for presentation only. Product
may look slightly different depending
on the area and the purchase period.
KÖBER SRL, no. 25 Vaduri, Alexandru cel Bun Commune, Neamt 617511, Romania
Tel.:[phone], Fax:[phone]
www.motan.ro
P M0 0 2 4 2 5
18
2726

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Contents
1Safety instructions and symbols................................................................................................................................................... 3
2Valability of instructions................................................................................................................................................................ 3
3EC Marking .................................................................................................................................................................................... 3
4Use according to destination....................................................................................................................................................... 3
5Safety instructions.......................................................................................................................................................................... 3
5.1 Instalation and adjustment....................................................................................................................................................................3
5.2 Gas smell...................................................................................................................................................................................................3
5.3 Changes in the area adjiacent to the heating station.....................................................................................................................3
6Technical and functional characteristics.................................................................................................................................... 4
7Mounting........................................................................................................................................................................................ 5
7.1 Mounting set............................................................................................................................................................................................5
7.2 Dimensions and mounting positions.....................................................................................................................................................5
8Installation...................................................................................................................................................................................... 6
8.1 Conditions for the installation of the central heating station...........................................................................................................6
8.1.1 Installation directions............................................................................................................................................................6
8.1.2 Protection of the station in order to keep the warranty ................................................................................................6
8.2 Gas connection.......................................................................................................................................................................................7
8.3 General directions for the heating installation...................................................................................................................................7
8.4 General directions for the hot water circuit........................................................................................................................................7
8.5 Connecting pipe of the condensation output duct.........................................................................................................................8
8.6 Connecting pipe of the safety valve...................................................................................................................................................8
8.7 Air/ burnt gases input/ output pipes....................................................................................................................................................8
8.8 Electric grid connection.........................................................................................................................................................................8
8.9 Installation filling and emptying............................................................................................................................................................9
9Operation instructions................................................................................................................................................................. 10
9.1 Control Panel
LMC1112-C15 .............................................................................................................................................................10
9.2
Description of functions and of graphic contexts diplayed on the control panel LMC1112 ............................................ 10
9.2.1
LIGHT function LMC1112-C15......................................................................................................................................... 10
9.2.2 Graphic context – station startup LMC1112-C15 ...................................................................................................... 10
9.2.3
Graphic context - Stand-by LMC1112-C15................................................................................................................. 11
9.2.4
Graphic context – error state LMC1112-C15.............................................................................................................. 11
9.2.5 Graphic context – waiting state LMC1112-C15......................................................................................................... 11
9.2.6
Graphic context – functioning state LMC1112-C15 ................................................................................................. 11
9.2.7
Graphic context – adjustment of functioning parameters LMC1112-C15.......................................................... 11
9.2.8
Graphic context - Service submenu LMC1112-C15................................................................................................... 12
9.3 Central heating station startup..........................................................................................................................................................12
9.4 Functioning as domestic hot water preparation boiler (DHW)..................................................................................................... 12
9.5 Functioning as heating preparation boiler (HS)..............................................................................................................................12
9.5.1 Preset functions related to BOILER safety...................................................................................................................... 12
9.6 BOILER switch off in safety conditions...............................................................................................................................................13
9.7 User training...........................................................................................................................................................................................13
9.8 Quality Conditions and Warranty......................................................................................................................................................13
10 INSPECTION AND MAINTENANCE ............................................................................................................................................... 13
10.1 Inspection and maintenance intervals............................................................................................................................................. 13
10.2 Maintenance works.............................................................................................................................................................................14
10.3 ERRORS...................................................................................................................................................................................................14
11 DISPOSAL OF ELECTRICAL AND ELECTRONICAL WASTE (DIRECTIVE 2012/19/EU)..................................................................... 15
12 Drawings necessary for mounting and installation................................................................................................................... 16
12.1 Flue types configurations.................................................................................................................................................................... 16
12.2 Minimum distances recommended for the mounting of the co-axial kit................................................................................... 16
12.3 Hydraulic characteristic of ER P pump (EEI≤0,2)..............................................................................................................................17
12.4 Functioning schemes covered by warranty....................................................................................................................................18
12.4.1 Central heating with radiators and instant preparation of domestic hot water.................................................... 18
12.4.2 Underfloor central heating and instant preparation of domestic hot water.......................................................... 18
12.4.3 Central heating with radiators and accumulated preparation of domestic hot water (accummulation boiler)
19
12.4.4 Underfloor central heating and accumulated preparation of domestic hot water (accummulation boiler).. 19

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1Safety instructions and symbols
When installing the central heating station we ask you to respect the safety instructions contained in this manual!
This manual is the property of KÖBER SRL-Vaduri branch. Copying or reproduction without written consent KÖBER SRL-Vaduri
branch is strictly forbidden.
The following lines explain the symbols used in the text:
Danger! - direct danger for corporal integrity and life.
Danger!- danger of death by electrocution.
Caution! - pontentially dangerous situation for the product and the environment.
Note!- useful notes and information. This symbol indicates a necessary activity.
2Valability of instructions
These instructions are valid exclusively for central heating stations type C34GV24; C34GV28.
3EC Marking
EC marking applied on this product guarantees that the equipment complies with the esential conditions stipulated in
the applicable European legislation:
- Directive regarding gas equipment 2009/142/CE (ex. 90/396/CEE)
- EcoDesign Directive 2009/125/EC
- Directive regarding energy efficiency 92/42/EEC and European Regulations no.811-814/2013
- Directive regarding electromagnetic compatibility 2004/108/EC (ex. 89/366/CEE)
- Directive for low frequency 2006/95/EC (ex. 73/23/EEC).
4Use according to destination
- Central heating stations C34GV24; C34GV28 are designed following current technical standards and observing recognized
safety norms
;
- In case of misuse or inappropriate use, the health or life of users or third parties can be put in danger, as well as the central
heating station and other goods;
- This equipment must not be used by people with limited psychological and sensitive capacities (including children), or by
people with no experience or/ and no knowledge;
- The station provides both heating in closed circuit central heating installations, as well as hot water. Use for other purposes or for
additional purposes other than stipulated is considered inappropriate use. The manufacturer is not responsible for possible
damage resulting from inappropriate use. The user is the only one responsible;
- Compliance with the use and installation instructions, the additional documentation, as well as with the inspection and
maintenance stipulations is part of what is understood by use according to destination.
5Safety instructions
5.1 Instalation and adjustment
Installation and commissioning can be done only by a company authorized and agreed by KÖBER SRL-Vaduri Branch!
This company will assume responsibility for the correct installation and commissioning.
Adjustment work, as well as maintenance and repair are allowed to be performed only by a company authorized and agreed
by KÖBER SRL-Vaduri Branch!
Danger!
Danger of death by poisoning and explosion because of breeches in the gas pipes and connections in case of
incorrect installation!
Danger of deterioration when inappropriate tools are used. For tightening or unscrewing connection screws use
appropriate wrenches (no box wrenches, extensions etc).
5.2 Gas smell
When gas smell appears, take the following into account:
- Do not activate electric switches in the dangerous zone;
- Do not smoke in the dangerous zone;
- Do not use mobile phones in the dangerous zone;
- Turn off the gas tap;
- Air the dangerous zone;
- Notify the gas distribution company.
5.3 Changes in the area adjiacent to the heating station
Modifications of the following installations are not allowed:
- The central heating station;
- The gas or water pipes or electric cables;
- Air/ gas incoming/ outgoing pipes.

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6Technical and functional characteristics
Tab. 1 Technical characteristics
Name
Green 24
Green 28
Type
C34GV24
C34GV28
Gas category
II2H3B/P
Flue type
Forced, variabile speed fan
Burning room
Sealed
Energy efficiency symbol (dir. 92/42/CEE)
****
Class NOx (natural gas)
3
Energy efficiency class on central heating circuit
B
Energy efficiency class on domestic hot water circuit
A
Clasa CONFORT apa calda menajera (EN13203)
***
Thermal efficiency (80/60 °C) (non-condensing)
97 %
97 %
Thermal efficiency (50/30 °C) (condensing)
104 %
104 %
Power (min/max) (kW)
7 – 24 KW
9 – 28 KW
Rated pressure gas input
20 mbar
Pressure (min/max) on thermal circuit
0.5÷3.5 bar
Maximum pressure on DHW circuit
8 bar
Temperature on thermal circuit
30÷80 °C
Temperature on underfloor heating systemcircuit
15-45 °C
Temperature on domestic hot water circuit
35÷55 °C
Hot water flow ∆t = 30 °C
*
12l/min with flow restrictor
12 l/min
12 l/min with flow
restrictor
13,5 l/min without flow
restrictor*
Electric
characteristics
Input
~230VAC/50 Hz
Rated power (EEI pump <0,2)
80 W
Caracteristici constructive
Height
761 mm
Width
430 mm
Depth
391 mm
Capacity primary heat switch
1 l
Capacity of heat recovery module
0,3 l
Greutate
34 kg
35 kg
Conectors
Thermal input, output
3/4‘’
Cold water input, hot water output
1/2'’
Gas input
3/4'’
Expansion vessel with membrane
7 l
Air/ gas incoming/ outgoing pipes
Coaxial - Ø100/Ø60
Length of burnt gases connecting pipe
Coaxial - maxim 3 m
Evacuation type
C12, C12x; C32, C32x
Burnt gases (maximum temperature) (50/ 30 °C regim)
~ 60 °C
Classes of electric protection
IP40
* The boiler is standard delivered with 12l/min flow restrictor.
** The boiler is standard delivered with 1m co-axial flue.

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7Mounting
7.1 Mounting set
Check whether the mounting set is complete and undamaged – see table 2.
7.2 Dimensions and mounting positions
7.2.1 Installation site
When choosing the installation site, please take into consideration the following safety instructions:
Caution!
Do not install the station in spaces that are exposed to freezing! In case of freezing the sation can be damaged.
This equipment can not be installed and used in open air. Outdoor installation can cause functioning flaws.
Caution!
It is not recommended to install the central heating station in bathrooms or kitchens or other areas with high humidity.
The station can be installed only in rooms with
maximum 60% humidity between 20-30°C in order to
prevent the damaging of electronic components.
Caution!
The burning air of the station must not
contain substances such as flourine vapours, chlorine,
sulphur, dissolvants, colorants, adhesives or gasoline.
These substances can lead in time to the corrosion of
the equipment and air/ gas incoming/ outgoing
pipes.
Legend:
A – Thermal input connector
B – Hot water output connector
C - Fuel input connector
D - Cold water input connector
E - Thermal output connector
Fig. 1.2 Dimensions and mounting positions
Tab. 2 Mounting set
Pos.
Item
Name
1
1
Station
2
1
Station support
3 1
Bag of small elements - it contains:
- mounting screws 8x80 - 2 items.
4 1
Printed packet – it contains:
- user manual - 1 item
- conformity statement - 1 item
- warranty certificate – 1item
3
4
Fig.1.1
Fig. 1.2
Slope 3% (aprox 2º)

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7.2.2 Minimum necessary distances/ free spaces for mounting
Both for the mounting/ installation of the central
heating stations and for later maintenance operations
you will need the following minimum distances (fig.
1.3), respectively minimum free spaces for mounting:
– distance to the lateral: 100 mm
– distance to the bottom part: 250 mm
– distance to the upper part: 400 mm
- distance to front part: 500mm
Caution!
Danger of damaging the equipment by
incorrect setting!
The equipment can be mounted only on a flat, fixed
surface.
Note!
Minimum necessary distances/ free spaces
for mounting are valid also for mounting
with/ within pieces of furniture.
8Installation
Danger!
Danger of death by poisoning and explosion because of breeches in the gas pipes and connections in case of
incorrect installation!
Installation and commissioning can be done only by a company authorized and agreed by KÖBER SRL-Vaduri
Branch!
This company will assume responsibility for the correct installation and commissioning.
8.1 Conditions for the installation of the central heating station
8.1.1 Installation directions
The central heating station will be subject to corrosion from the moment it is filled with water!
To receive warranty during the entire warranty period it is essential to take into consideration the following directions in order
not to increase the corrosion!
- The burning gas must have the sulphur content within the limits of the applicable European standard: it is accepted for a short
period of time to have a maximum of 150 mg/m3, but the yearly average must be of 30 mg/m3.
- The burning air must not contain chlorine, ammonia, alkaline agents, halogenated hydrocarbs, freon, plaster particles, lints,
dirt or dust;
- Installation of the central heating station in the proximity of a swimming pool, washing machine or cleaner can result in the
contamination of the burning air with these compounds.
-Water pH must be within the following limits: 7,5<pH<8,5
- It is recommended to check the water and thermal agent pH frequently and if the value does not fall within the limits provided
by the manufacturer, it will be treated again.
- Water asperity must be within the limits 5°F <TH <15°F (5°F (French degrees), equivalent to 50 mg CaCO3or an equivalent
quantity of other Ca and Mg salts).
- It is recommended to have repeated station startup cycles with the fuel tap off in order to air the installation.
- If the central heating station is not used for a long period of time during the cold season, full emptying of the installation is
recommended to prevent damage caused by freezing.
8.1.2 Protection of the station in order to keep the warranty
Before and during installation, the central heating station must be kept away from impurities: construction dust, sand, copper
dust, fats etc as well as welding splashes, scoria. In any of theses cases, the installation must be washed with clean water mixed
with a highly concentrated cleaning agent.
Genereally, in order to keep the warranty it is necessary to apply any neccesary treatment to prevent the contamination of
water with the following:
Black mud (magnetite - Fe3O4) formed as a result of the continuous electrolyte corrosion occurring in any installation
which is not protected with an inhibitor.
Red mud (rust - Fe2O3) produced during oxidation.
Calcarous deposits produced especially on the hottest areas of the central heating station.
Oxides deposits on the outside of the condensate recuperator and the condensate drainage pathways must be
cleaned annually!
A combination of these three factors mentioned above causes the majority of the problems occurring with heating systems.
Caution!
Fig. 1.3

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The presence of these substances (black mud/ red mud/ calcarous deposits / oxides deposits on the condensate recuperator)
means that the standard measures to prevent problems of the heating system were not observed. This is one of the causes
resulting in losing warranty!
8.2 Gas connection
Danger!
Danger of death by poisoning and explosion because of breeches in the gas pipes and connections in case of
incorrect installation!
Installation of gas pipes is allowed to be performed only by an authorized agent. During installation all legal
stipulations, as well as the local regulations of gas distribution companies are to be observed.
When installing the gas pipe it is essential that it is not tensed so as not to create areas of leakage!
Caution!
Maximum safety pressure for the gas valve is 60 mbar! Going above this pressure limit may result in damage.
Work pressure with G20 natural gas functioning must be 20 mbar!
Gas pressure at the entry into the gas valve if GPL gas is used must be maintained between 30÷37 mbar!
Caution!
Is is obligatory to istall a pressure regulator on the fuel input circuit, adjusted at 20 mbar.
Caution!
In case parasite voltage appears on the gas pipe, it can be insulated by installing an electroinsulating piece
(according to the Technical Norms for the planning and execution of natural gas input systems).
Central heating boiler types C34GV24; C34GV28 function on GN natural gas. The gas connecting pipe is made of stainless steel
with an interior diameter of 16.4 mm. The gas input pipe must not have a diameter smaller than that of the gas connecting pipe
of the central heating station.
The fuel input must be done according to applicable legal stipulations.
8.3 General directions for the heating installation
When designing the central heating system, please take in consideration the hydraulic characteristic of the pump that equips
this boiler model! See chapter 11 for pump characteristic.
Caution! Before connecting the central heating station carefully wash the entire heating installation! In this way, you
eliminate from the pipes various debris such as welding splashes, scoria, grummet, putty, dirt or similar. Otherwise,
these substances can form deposits in the heating switcher and can cause damage or malfunctioning.
Caution!
It is obligatory to install an impurity filter on the return of the thermal circuit installation!
When installing connecting pipes it is essential for these not to be tensed to avoid creating areas of leakage!
Maximum working pressure allowed is 3bar.
Recommended working pressure is 1.5 bar!
Caution!
It is forbidden to use the central heating station without thermal agent or partilally filled – danger of explosion!
It is forbidden to use the central heating station if it is not completely aired!
The equipment is provided with a 7l capacity and 1 bar loading pressure expansion vessel. Before installing the equipment,
check whether this volume is sufficient. If not, an additional expansion vessel must be installed on the aspiration side of the
pump. Caution!
Check the pressure inside the expansion vessel before commissioning.
Pressure inside the expansion vessel must be 0.8÷1bar.
8.4 General directions for the hot water circuit
Connect the central heating station to the hot water installation.
It is obligatory to install filters to de-harden the water and a mechanical impurity filter on the cold water input
connecting pipe!
Caution!
When installing connecting pipes it is essential for these not to be tensed to avoid creating areas of leakage!
The apparition of pressure shocks (input pressures higher than 3-4 bars in addition to symoultaneously activating
quick closing taps) can affect the components of the hydraulic circuit inside the central heating station. We recommend the
installation of a pressure regulator adjusted to 3-4 bars!
Damage caused by the apparition of pressure shocks or by the use of higher pressure than recommended on the cold water
input circuit is not covered by the warranty!
We recommend the installation of a pressure regulator! Damage caused by the use of pressure higher than recommended on
the cold water input circuit is not covered by the warranty!
It is forbidden to install one-way valves on the the cold water input circuit.
The cold water input pipe of the hot water preparation circuit will always be open (closing the network is done only by
activating the taps at the consumer points) to allow take-over of possible dilatations on this circuit.
Note!
It is recommended that the distance between the hot water connecting pipe of the central heation station and the
nearest conumer is minimum 6m of pipe. Otherwiswe, there is always the risk of hot water burns.

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8.5 Connecting pipe of the condensation output duct
Danger!
Danger of death by leakage of burning gases!
The condensation output duct must not be water-proof connected to a used water pipe because otherwise the
internal condensation seal box can be emptied by aspiration and the burning gases can get inside the room where
the central heating BOILER is installed.
The condensation resulting from the condensation of water vapours contained by the burning gases is taken out of the BOILER
by means of the condensation output seal box (fig.1.5), which is located in the lower part of the central heating BOILER.
As this condensation is acid with a pH of approximately
3.8÷5.4, the output must be done by means of a plastic tube
(flexible) with an interior diameter of minimum Ø25 mm or
larger, which is connected at one end to the hose of the
seal box and at the other to a sewage pipe.
Before commissioning the central heating BOILER approximately 1/4 liters of water must be introduced by means of the burning
gases output connecting pipe (fig. 1.4), to form a “water plug” inside the seal box – in this way we prevent burning gases to be
evicted in the room.
The route of condensation output must be continuously downwards (so as not to have areas of condensation stagnation,
especially in areas where there is the danger of freezing). The route of the condensation output must respect the applicable
norms regarding residual waters
8.6 Connecting pipe of the safety valve
Caution!
Danger of hot water burns!
The connecting pipe of the pressing of the safety valve is connected to the drain pipe to the sewage system.
Otherwise, there is always the risk of flooding, for which the manufacturer of the central heating station is not responsible.
8.7 Air/ burnt gases input/ output pipes
The central heating station does not use the air in the room where it is placed or adjiacent rooms. To ensure the efficient
functioning of the central heating station is recommended that the air necessary for burning is taken from the outside of the
building.
The equipment is delivered with a 1m co-xial kit.
Caution!
It is obligatory to place central heating BOILER in rooms with proper ventilation systems according to applicable
norms. Study the technical instructions before mounting/ installation, commissioning or maintenance or repair work.
Under no circumstances the total length of the co-axial kit, including elongations, is to be longer than 3 m (without the first
corner).
Danger!
It is completely forbidden to use the central heating BOILER without the burnt gases output pipes because it
endangeres people’s life and health of people.
Replacement is to be performed only by authorized personnel following applicable laws and using only original spare parts
provided by the producer.
8.8 Electric grid connection
The central heating station must be connected to one-phase network of 230V - 50Hz with protection null.
Dispersion withstand of the earthing switch (earthing) must comply with applicable norms (maximum 4 ohm, and the working
null must not have residual current).
Electric powering of the central heating station will be executed from a separate circuit provided with differential protection
fuses of 30 mA.
External connections must comply with applicable norms. Connection to the electric grid of the building must allow the entire
electric insulataion of the central heating station for situations when interventions are required.
Grid connection is done taking into account the symbolism of colours as follows: Brown = phase, Blue = null, Green and Yellow =
earthing.
Fig. 1.4
Fig. 1.5

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The current plug must be accessible so that the user can easily disconnect it.
Caution! Connecting the power plant using a port other than that indicated in the Service Manual for the 230Vac
voltage connection results in irreparable damage to the base electronics board (short circuit).
It is not allowed to mount the central heating BOILER with a defective electric installation or with no earthing.
Danger!
Danger of death by electric shock with electric contacts!
8.9 Installation filling and emptying
The following operations are executed to fill the installation:
- ellectrically power the central heating station;
- open the filling tap (fig. 1.4) of the central heating station
and of the thermal/ house water installation;
- load the boiler with a pressure of about 0.4 bar, indicated
on the display;
- open the pump air vent;
- activate the boiler ventilation module to vent the system:
press the J7( ) key for activation and the pump will
start, the boiler is in the OFF (Stand-by) state, to deactivate it
press the J7( ) or by turning on the POWER button;
- Adjust the pump operation (5, 6 or 7m) depending on the
installation (see chapters 8.3 and 11);
- continue to fill the system, with the ventilation function
switched on up to 1.1-1.5 bar;*figure contains ERP pump
- check the tightness of the entire system. If there are losses, the problems must be
remedied;
In the case of plants equipped with automatic ventilation: keep the pump on until
noises are heard in the installation;
In the case of plants without automatic ventilators: manually operate the manual
air vent to remove the air from the main exchanger until noises are heard in the
installation;
- heat the radiators;
- Make 2-3 cycles of 50-60 seconds of air-venting, following the steps described
above;
- check the system pressure indicated on the display. If necessary, fill with thermal
agent following the above steps.
- Remove the flexible hose.
If necessary, fill with thermal agent following the above steps.
Caution! Obligatory operation!
Check the correct functioning of the pump with no fuel in the central heating station.
If the pump indicates an error code or is blocked, it will be unlocked as indicated in the Service Manual.
Defficient thermal transfer can cause the melting of the vent pipe of the ventilator, errors of the central heating station damage
of the main switch of the station.
Incorrect airing of the installation can cause damage of the main heating switch.
Note!
Recommended pressure on the thermal circuit is 1.5 bars.
When the ERR pump starts to recirculate unheated water (Ttur ~ 19 ° C), the pressure increases by up to 0.4 / 0.5 bar
compared to the static loading pressure of the boiler. Depending on the size of the heating plant, there is still a
regular pressure input of approx. 0.2 / 0.4 bar due to the installation.
So when the pump starts to recirculate unheated water still, a pressure increase of approx. 0.6 / 0.9 bar, relative to the
static boiler pressure, is considered normal.
Emptying the central heating station
Emptying of the station implies the following:
- turn off the station by pressing Power si switch off the electric power, close the gas tap;
- close the thermal tap and the cold water input tap;
- open the filling tap (fig.1.4), and then the consumer point of hot house water.
Caution!
Danger of hot water burns when emptying the station.
Water filling tap
OPEN
Fig. 1.6
OPEN
Filling tap
Fig. 1.7
Vent valve
Flexible
hose

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Fig. 1.8 Control panel LMC1112 - C15
9Operation instructions
9.1 Control Panel LMC1112-C15
The LMC1112 control panel (fig.1.8) allows the visualization and change of parameters defining the functioning of the
central heating station. It consists of:
- 8 keys (J1÷J8) - tab.3
- LCD display, where communication messages (graphic symbols) are displayed. The meaning of the 10 types of symbols
(S1÷S10) is presented in table 4.
Table 3: Control panel keys
Key
Symbol
Description:
J1
CH +
Used to increase the set thermal temperature or to navigate the installation submenu
J2
CH -
Used to decrease the set thermal temperature or to navigate the installation submenu
J3 DHW +
Used to increase the set temperature on hot water circuit or the value of the current parameter
in the installation submenu
J4 DHW -
Used to decrease the set temperature on hot water circuit or the value of the current
parameter in the installation submenu
J5
POWER
Used to switch the station on/ off
J6
RESET
Used to reset the electronic control board from an error state
J7 Used to change the functioning mode winter/ summer
J8
LIGHT
Used to activate/ deactivate the light on the display
Table 4: Description of graphic symbols in the LCD display
Key
Symbol
Description:
S1
It diplays the temperature (°C), set value, parameter values, informative values, various
messages („On”, “SP”, “Co”, “EI”, “SI”, etc.)
S2
It displays informative values, parameter values, pressure
S3
It shows the state of the central heating station (Closed (OFF) = active symbol, Open (ON) =
inactive symbol)
S4 It shows the presence of flame
S5 It shows whether the set functioning mode is SUMMER (active symbol)
S6 It shows whether the set functioning mode is WINTER (active symbol)
S7
The symbol is displayed continuously, which means that the station functions as thermal station.
The symbol is displayed interrupted whenthe thermal temperature is set.
S8
If this symbol is displayed continuously it means that the station functions as hot water station.
The symbol is displayed interrupted whenthe hot water temperature is set.
S9
It shows the fact that the S2 symbol displays the value of the pressure inside the installation
(active symbol)
S10
It shows the fact that there was an unsaved change of parameters in the EEPROM
memory (it flashes)
9.2
Description of functions and of graphic contexts diplayed on the control panel LMC1112
9.2.1 LIGHT function LMC1112-C15
LIGHT key (J8 fig.1.8) is used to activate/ deactivate the light on display function.
9.2.2
Graphic context – station startup LMC1112-C15
When started, the station is in an intermediary state for 5 seconds, necessary to initialise the system.
During this interval the diplay shows only the message “On” on the S1 symbol on the interface (see
figure 1.9).
Fig.1.9

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9.2.3 Graphic context - Stand-by LMC1112-C15
This context is associated with an inactive/ waiting state of the central heating station. In the stand-by
state all the activation elements are inactive and every burning demand is ignored.
An exception to the rule: the anti-freezing function (generated by a value of water temperature in
the installation lower than 9°C, which will initiate a burning cycle to prevent the freezing of the thermal
agent in the installation.
Entering and exiting this regine is done by pressing POWER key for at least one second.
- POWER – comute between ON/OFF states;
- LIGHT – activation or deactivation of light functions.
Figure 1.10 is a good example of display in the stand-by state (pressure on the thermal installation 1,8 bar).
9.2.4
Graphic context – error state LMC1112-C15
The display of an error is asociated with a state of malfunctioning/ error of the station. There are
three types of errors:
- Critical errors: all the activating/state elements of the central heating station are inactive and any
burning request is ignored. Getting out of this critical error state is done by pressing the RESET key;
- Normal errors: all the activating/state elements of the central heating station are active and any
burning request is ignored. Getting out of a normal error state is done by pressing the RESET key;
- Informative errors: all the activating/state elements of the central heating station are active and all burning requests are
accepted. Getting out of an informative state is done automatically when the cause of error disappears.
In this context the diplay flashes a message with the error code
.
Possible actions:
- RESET – reset critical or normal errors;
- LIGHT - activation or deactivation of light functions – possible only if the central heating station is not in a state of critical
error.
Figura 1.11 is a good example of display of an error (in our case E20).
9.2.5
Graphic context – waiting state LMC1112-C15
Waiting state is associated with a functioning state of the station, but with no burning request. All the
activating/state elements of the central heating station are active and all burning requests are accepted
if no error is present. In this state, the display shows pressure and thermal temperature, as well as the
functioning mode summer/ winter.
Possible actions:
- POWER - comute between ON/OFF states;
- IN/SU – comute between summer/ winter functioning modes;
- LIGHT - activation or deactivation of light functions;
- CH+ - display and setting of maximum thermal temperature;
- CH-- display and setting of minimum thermal temperature;
- DHW+ - display and setting of maximum hot water temperature;
- DHW-- display and setting of minimum hot water temperature.
Figura 1.12 is an example of display in the waiting state (pressure in the heating installation is 1,4 bar, working mode is
summer, and the temperature in the installation is 17°C.
9.2.6 Graphic context – functioning state LMC1112-C15
This state is associated with the presence of flame or the functioning of the circulation pump of the station. In this state, all the
activating/state elements of the central heating station are active and the burning request is accepted.
The display shows the
delivered instant temperature on the circuit meeting the request (heating ot hot water – symbols S5 or S6), regardless of the
presence or lack of flame, the pressure inside the installation and the functioning mode summer/ winter
Possible actions:
- POWER - comute between ON/OFF states;
- IN/SU comute between summer/ winter functioning modes;
- LIGHT - activation or deactivation of light functions;
- CH+ - display and setting of maximum thermal temperature;
- CH-- display and setting of minimum thermal temperature;
- DHW+ - display and setting of maximum hot water temperature;
- DHW-- display and setting of minimum hot water temperature.
Figures 1.13 and 1.14 are two examples of graphic display of this context. Figure 1.13 – pressure in the
heating installation is 1,8 bar, central heating station is in winter mode, flame is present, heating demand
is satisfied and the instant thermal temperature is 43°C;
Figura 1.14 – pressure in the heating installation is 1,7 bar, central heating station is set on winter mode, flame is present,
station deliveres hot water, and the instant hot water temperature is 53°C.
9.2.7
Graphic context – adjustment of functioning parameters LMC1112-C15
The adjustment of the main functions of the station (thermal temperature, hot water temperature) can be
done both in the waiting state and in the functioning state.
When we enter the state display of these values, the last value previously set will be displayed. Only in the
period the set value is displayed we can make changes of its value. Practically, at any moment of
functioning of the station, by pressing J1 (CH+) or J2 (CH-) keys, the set value of the thermal temperature
will be displayed and can be changed.
Similarlry, at any moment of functioning of the station, by pressing the J3 (DHW+) or J4 (DHW-) keys, the set
value of the hot water temperature will be displayed and can be changed.
While doing these settings, the display will show the value of the set temperature (thermal or hot water), the
pressure in the installation and the functioning mode of the station (winter/ summer).
Fig.1.10
Fig.1.11
Fig.1.12
Fig.1.13
Fig.1.14
Fig.1.15
Fig.1.16

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Getting out of this setting mode is done automatically if no key is pressed for at least 3 seconds.
Figures 1.15 and 1.16 are two examples of displaying temperature in the setting mode.
Figure 1.15 – pressure in the heating installation is 1,8 bar, central heating station is set on winter mode, set value of thermal
temperature is 42°C;
Figure 1.16– pressure in the heating installation 1,6 bar, central heating station is set on winter mode, set value of hot water
temperature is 60°C.
9.2.8
Graphic context - Service submenu LMC1112-C15
In the Service submenu, various functioning parameters of the central heating station can be viewed/ changed/ checked. This
submenu can be accessed only by service personnel authorised by KOBER SRL Vaduri Branch.
9.3 Central heating station startup
To startup the station press J5(POWER)key fig.1.8.
Choosing the functioning mode winter/ summer
By pressing J7 key ( ) you can change the functioning mode winter/ summer. This can be viewed on the display, symbol
S5/S6 will be activated.
Adjusting temperature on the thermal circuit
The adjustment of temperature is done by pressing J1 and J2 keys. Press J1 to increase temperature and J2 respectively to
decrease temperature. Simbol S9( ) will flash intermitent.
Adjusting water temperature on the hot water circuit
The adjustment of temperature is done by presing J3 and J4 keys. Press J3 to increase temperature and J4 respectively to
decrease temperature. Simbol S10( ) will flash intermitent.
9.4 Functioning as domestic hot water preparation boiler (DHW)
The station can function as WHW in both seasons – winter and summer.
The WHW request has priority over the heating request in the „winter” mode.
The station can function as instant WHW or as accumulation boiler WHW (the boiler is purchased separately). For the
functioning of the station as an accumulation boiler WHW station please contact an authorised service company.
In intant regime, the minimum flow of hot water detected by the station is 2.4 l/min
For confort in using the station as a WHW station we recommend to exploit the station at a flow of approximately 7-8 l/min.
When the station functions with low flows, the station functions continuously at the minimum charge as long as the hot water
temperature is under the threshold limit of 63°C. When the hot water temperature reaches the mentioned limit of 63°C, the
burner is closed and a new burning will happen when the hot water temperature is lower than the limit of 60°C.
When the station functions with high flows, the hot water temperature will be the opposite of the hot water flow, but lower than
the set temperature.
With instant WHW configuration on request the CONFORT function can be activated/ deactivated. Please contact an
authorized service company.
This function allows the delivery of hot water as soon as possible, while keeping the boiler hot. If the function is active, the boiler
starts when the hot water temperature is equal to the set hot water temperature; the boiler stops when the hot water
temperature is 8°C ( fixed value) higher than the set hot water temperature. If the water heated in this way is not consumed
within one hour, the CONFORT function is automatically deactivated.
9.5 Functioning as heating preparation boiler (HS)
The station functions in this mode when „winter” season is selected. For the selection of the type of heating installation (floor or
radiators) please contact an authorised service company.
If a thermoregulator is connected to the electronic board, the stations functions in thermal mode only when the surrounding
temperature is lower than the set temperature in the thermoregulator.
9.5.1 Preset functions related to BOILER safety
1. Anti-freezing protection function. If the temperature in the installation drops below 9°C, the system turns on the heating at
minimum charge until the temperature reaches 30°C.
2. Post-circulation of the hot water and heating pump function. The post-circulation cycle starts only if the system is not in the
BURNING state.
Advantages:
a) it prevents the water from becoming BOILERary at high temperatures inside the heat switch. In this way, calcareous deposits
are reduced significantly
b) it prevents water from boiling inside the heat switch in the post-heat interval.
These advantages have as result the protection of the heat switch.
3. Pump anti-blocking system and three-way valve.
If the BOILER did not go through a burning cycle in the last 24h, the pump will be started for 12 seconds to avoid its blocking. In
this time the three-way valve is also activated and deactivated.
4. Post-ventilation
After each BOILER stop, the ventilator still functions for some time to evacuate completely the burning gases out of the BOILER
and also the water vapours they contain. In this way, both the ventilator control electric circuit and the primary heat switch,
which cools down partially, are protected.
5. “Legionella” bacteria prevention function
This function is active for the functioning of the BOILER as accumulation boiler WHW.
When hot water is prepared in the boiler, the ANTILEGIONELLA function is actived automatically. This function implies that once
a week the temperature of the water in the boiler is kept at the value of 65°C.
6. Deaeration function
This function will be activated whenever the control panel is removed and energized (intentionally by the user, or
unintentionally by dropping the voltage) for 450 seconds. The function will only be activated if, when the power supply is
interrupted, the boiler is in the OFF state and the pressure condition (minimum 0.7 bar) is met.

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9.6 BOILER switch off in safety conditions
If the user observes abnormal functioning of the equipment, if error codes are displayed repreatedly or if the user cannot
understand the actions of the central heating BOILER, the user must stop the functioning of the BOILER immediately and in
maximum safety conditions. For this, the user must perform the following operations:
- Press POWER key and interrupt the functioning of the BOILER;
-Disconnect the central heating BOILER from the main power line by unplugging it (if applicable);
- Interrupt the fuel circuit by turning off the gas taps;
-Interrupt the flow of house water and of heatined water by turning off the corresponding taps for these circuits;
After the BOILER is switched off in safety conditions, the user will contact the authorized service company in the area.
9.7 User training
It is obligatory for the specialized personnel commissioning the BOILER to instruct the user about the following aspects:
1. Central heating BOILER switch on/ off procedure in safety conditions by checking the following elements:
- electrical power connection;
- fuel (gas) connection;
- feeding and filling the thermal circuit;
- the BOILER filling tap must be turned off;
- the pressure in the installation by reading the control panel (1.5bar);
- the BOILER taps on the house water circuit must be turned on.
2. The functioning way of the BOILER and possible problems that may occur. Also each key and symbol on the control panel
must be explained.
3. Warn the user that a drop in the water pressure of the system is caused by loss of thermal agent which needs to be
mended before using the BOILER again.
4. Warn the user on the works performed on the air/ gases input/ output systems. Warn the user that changing them is strictly
forbidden.
5. It is recommended that the user should have the BOILER verified by an authorized person at least once a year.
6. Warn the user about the the precautions that need to be taken against freezing.
7. Hand the user the user manual of the central heating BOILER.
At the end of training a commissioning statement is signed (table 2), by which the user signs that they are aware of the correct
way of using the central heating BOILER. .
This statement is also signed by the authorized person who commissioned the central heating BOILER.
The authorised person who commissions the BOILER has the right to refuse to sign the BOILER commissioning statement if they
notice defects of the local connecting installations and will not sign the commissioning statement until these defects have been
remedied.
9.8 Quality Conditions and Warranty
The company KÖBER S.R.L. - VADURI BRANCH as the manufacturer, guarantees the correct functioning of the central heating
BOILER if are observed ALL conditions for the installation, commissioning, use and periodical technical revision established in the
“Warranty Certificate” given by the manufacturer and signed by the authorized company in the presence of the beneficiary
when the product is purchased.
The Warranty Certificate that comes with the product details all the limits of the warranty. Please carefully follow the directions in
the Warranty Certificate and before reporting any malfunctioning of the BOILER make sure that all the local connecting
installations are of the required quality!
Caution!
Not observing the conditions of the warranty certificate results in losing warranty.
10 INSPECTION AND MAINTENANCE
10.1 Inspection and maintenance intervals
It is obligatory to perform the periodical technical inspection in accordance to applicable law.
In the warranty period of the BOILER the periodical technical inspection will be performed by companies authorised by KÖBER
S.R.L. - VADURI BRANCH.
In order to ensure permanent availability, safety in functioning, efficiency and extended working life, it is recommended that a
yearly technical inspection should be performed by the authorized agreed company. This is why we recommend that you sign
a service and maintenance agreement.
It is recommended that this inspection should be performed before the cold season when the BOILER is used at full capacity.
Danger!
Inspections, maintenabce and repair work are allowed only to technicians authorised and agreed by KÖBER S.R.L. -
VADURI BRANCH.
Not having inspections/ maintenance work can result in material and physical damage.
In order to benefit from all the BOILER function for an extended period of time we recommend the use of original
spare parts.

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10.2 Maintenance works
For keeping the product in perfect state of work, the following maintenance steps must be followed:
Tab.8.1Work stages for maintenance work
No. Work stage
To be done:
General
(each 2 year) On demand
1.
Disconnect from the electric grid and turn off gas power supply
•
2.
Turn off installation connecting taps; gas boiler de-pressurizing and emptying, if
necessary.
•
3.
Check and cleaning of the main heating switch
•
4.
Check the lighting/ ionizing electrode
•
5.
Check pressure in the expansion vessel
•
6.
Check the sieves on the cold water input circuit and thermal output circuit
•
7.
Check connections
•
8.
Check and clean the condensate trap
•
9.
Check safety elements
•
10.
Check electric connections
•
11.
Check pipes and gas valve tightness
•
12.
Check the gas valve closing function
•
13.
Check gas evacuation installation
•
14. Check adjustment devices (ambient thermostat, exterior sensor) if the case may be •
.
10.3 ERRORS
Possible errors of the system are indicated by the following codes which appear on the display.
Meaning of error signals which appear on the display:
Code
Class
Non-
Volatile
Meaning Resetting mode
E01 C YES
-
the quality of the power supply is not in the parameters;
-
the connection between the electronic board and the power
outlet is not correct, generating imperfect contacts.
AUTORESET to the
disappearance of cause
E02 C NO
-
failure of the electronic board due to electromagnetic
interference on the external power supply system of the boiler.
On the same electric circuit with the boiler there are consumers
generating such interference: washing machine, conditioner air
conditioner
s or other appliances.
-
failure of the electronic board due to excessive humidity inside
the electronic box (the environmental conditions for the boiler
installation are not observed).
AUTORESET to the
disappearance of cause
E04 C NO
-
breaking the ribbon cable between the electronic board and
the display;
-
keys on the display locked (manually or mechanically locked
under the display sheet). Any key pressed for more than 17
seconds displays the display E04.
AUTORESET to the
disappearance of cause
E06 C NO
-
Frequent resetting of the electronic board. In 3 hours more than
75 self
-resetting, due to the fact that the power supply is not in
the parameters.
Manual reset from RESET button
E07 N NO
-
EEPROM manufacturer and/or installer parameters corrupted
due
to inadequate communication between processors.
Manual reset from RESET button
E08 C YES
- EEPROM installer parameter corrupted due to an incorrect
connection on the 230Vac supply circuit between the electronic
board and the power supply or other field e
lement, powered by
230Vac, in the boiler.
Manual reset from RESET button
E10 N NO
- water pressure in the system is less than 0.8 bar (due to the
heating system);
-
water pressure in the system is higher than 3.5 bar (due to the
heating system);
-
pressure sensor supply cable with imperfect or interrupted
contact;
- wrong pressure sensor signal (decalibration).
AUTORESET to the
disappearance of cause
E11 N YES
The rapid increase in output water temperature (low flow or
pump lock
- the option with flow switch)
AUTORESET to the
disappearance of cause
E13 N NO
The turn / return temperature difference too high, caused by:
air
in the installation; CH flow too low; low installation pressure;
temperature sensor defective.
Manual reset from RESET button

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Code Class Non-
Volatile
Meaning
Resetting mode
E20 C YES
-
Flag (flame failure after 3 ignition attempts) caused by:
-
problems on the gas supply network: lack of gas; low gas
pressure in the network; gas meter / defective network regulators;
presence of condens
ate (water) in the combustion gas;
-
problems to the elements of the internal combustion circuit of
the boiler: connections / electrodes / ignition transformer / plate;
Specific condensation boilers: problems on the condensate
drain.
Manual reset from RESET
button
E22 C YES
-defence in the flame detection phase, invalid ionization current
signal.
Manual reset from RESET button
E23
C
YES
- the current ionization outside the combustion cycle.
Manual reset from RESET button
E25 C YES
-
supply voltage variation / interruptions / gaps / variations of
frequency / higher / lower frequency variations than standard
ones may lead to permanent blocking in the E25 error,
depending on the state of boiler.
Manual reset from RESET button
E26 C YES
- Flue gas emissions: incorrectly installed kit; with incorrect length
or slope;
-
the interrupted air source;
-
activating the over-temperature thermostat;
- over-temperature defective thermostat.
Manual reset from RESET button
E30
N
YES
Failure of flue gas sensor
Manual reset from RESET button
E31 N NO
Failure turn heating sensor
AUTORESET to the
disappearance of cause
E32 I NO
Failure return heating sensor
AUTORESET to the
disappearance of cause
E35 I NO
Defective external temperature sensor
AUTORESET to the
disappearance of cause
E37 N, I NO
Boiler's temperature sensor 1 faulty
AUTORESET to the
disappearance of cause
E38 N, I NO
Boiler's temperature sensor 2 faulty
Not applied in this chase
AUTORESET to the
disappearance of cause
E40 N YES
Flue gas temperatur
e is too high
Manual reset from the RESET
button, to the disappearance of
E41 N NO
CT heating flow/turn temperature is too high or too low
AUTORESET to the
disappearance of cause
E42 I NO
CH heating return temperature is too high or too low
AUTORESET to the
disappearance of cause
E45 I NO
External temperature too high
AUTORESET to the
disappearance of cause
E47 N, I NO
Boiler's temperature sensor 1 indicated is too low / high
AUTORESET to the
disappearance of cause
E48 N, I NO
Boiler's temperature sensor 2 indicated is too low / high
Not applied in this chase
AUTORESET to the
disappearance of cause
E50 N YES
-problems on fan power supply;
-Function problems.
Manual reset from the RESET
button
E51 N YES
Error in fan command / st
atus
Manual reset from the RESET
b tt
E52 N YES
- Improper fan function
-eg. fan speed set inadequately.
Manual reset from the RESET
button
E88 I YES
This will indicate the need commissioning
Manual reset (Removing strap
connected to outdoor sensor)
11 DISPOSAL OF ELECTRICAL AND ELECTRONICAL WASTE (DIRECTIVE 2012/19/EU)
This symbol indicates that this product should not be disposed of as household waste.
It must be taken to a collection center for the recycling of electrical and electronic equipment.
Proper disposal of the product avoids possible consequences for the environment and health.
Recycling materials allows the conservation of natural resources.
For more information about recycling of this product, please contact your local household waste disposal
service.

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12 Drawings necessary for mounting and installation
12.1 Flue types configurations
12.2 Minimum distances recommended for the mounting of the co-axial kit
GARAGE, ANNEX, ETC
LEGEND:
A – distance under the window/ ventilation hole = 300mm
B - distance over the window/ ventilation hole = 300mm
C – distance left/ right to the window/ ventilation hole =
300mm
D, E – distance from the roof/ gutter = 250mm
F – distance from the garage roof/ balcony = 250mm
G – distance to vertical gutter = 250mm
H – distance to internal/ external corners = 250mm
H* - distance to windows/ doors = 300mm
I – distance to ground/ balcony = 300mm
J – distance over the door = 600mm
L – distance to the door/ window in the garage = 1200mm
M – vertical distance to another terminal = 1500mm
N – horizontal distance to another terminal = 300mm
O – distance to the wall of another construction = 1200m
H

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12.3 Hydraulic characteristic of ER P pump (EEI≤0,2)
When designing the thermal installation, the hydraulic characteristics of the pump need to be taken into consideration.
Pump setting:
The pump can be set to function in four modes (4 steps).
Table 6 – Pump functioning modes
UPM3 Flex As
[m]
LED 1
green
LED 2
yellow
LED 3
yellow
LED 4
yellow
LED 5
yellow
4
•
•
5
•
•
•
6*
•
•
•
•
(*)functioning mode set in the factory.
To set on another curve please contact the authorized service company.
NOTE!
To save on energy and to maintain the possible functioning noises to a low level, please choose a low characteristic
curve.
If the pump has detecte one or more errors, the bi-colour LED 1 changes from green to red. When an error is active, LEDs
indicate the type of error as presented in table 7.
If more alarms are active at the same time, LEDs show the rror with the highest priority.
Tab. 7 Pump error codes
Display
Meaning
Pump action
1 LED red + 1 LED yellow (LEDl 5)
Blocked rotor
Pump tries to restart every 1.5 seconds
1 LED red + 1 LED yellow (LEDl 4)
Feeding voltage too low
Only warning, the pump functions
1 LED red + 1 LED yellow (LEDl 3) Electrical error
Pump is stopped because the feeding
volatage is too low or feeding voltage
is incorrect
LED 1
DEBIT POMPA
PRESIUNE
POMPA

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12.4 Functioning schemes covered by warranty
12.4.1 Central heating with radiators and instant preparation of domestic hot water
12.4.2 Underfloor central heating and instant preparation of domestic hot water

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12.4.3 Central heating with radiators and accumulated preparation of domestic hot water (accummulation boiler)
12.4.4 Underfloor central heating and accumulated preparation of domestic hot water (accummulation boiler)