Motan OPTIMUS MT Owner's manual

KÖBER LTD DUMBRAVA ROSIE - VADURI BRANCH OFFICE
Branch Office:Vaduri, No. 280, Alexandru cel Bun, Neamt District, Postal Code 617511, Romania
Phone : [phone], Fax : [phone]
E-mail : , [e-mail]
TECHNICAL INSTRUCTIONS
FOR INSTALLATION/ USAGE/ MAINTENANCE
Köber LTD
Vaduri Branch Office
1798
OPTIMUS MT
C15SPV 24MEFM

CONTENTS
General presentation of the wall hung gas boiler
Connection for evacuation of the flue gases ...............................................................
Operating mode
.................................................................................
..........................................................
....................................................
General description of the wall hung gas boiler ...........................................................
Description of the boilers types ..................................................................................
Symbols ....................................................................................................................
General instructions concerning the safety of the wall hung gas boiler ........................
Technical characteristics ...........................................................................................
Functional and constructive characteristics ..............................................................
Constitutive elements of wall hung gas boiler .............................................................
The heat generator ...................................................................................................
The exhaust gases/water heat exchanger .................................................................
The heating and domestic hot water circuits Hydraulic circuits ..................................
The command and control system ............................................................................
The external shell ......................................................................................................
The hydraulic characteristic of circulation pump .........................................................
Mounting/installation instructions ..............................................................................
The location of the unit ...............................................................................................
The central heating ...................................................................................................
The gas supply ..........................................................................................................
The electric power supply .........................................................................................
Instructions for the final user (beneficiary) ..................................................................
Operating instructions ..............................................................................................
The control panel .......................................................................................................
The LCD display board in the user module .................................................................
The LCD display in the user module ................................................
The pressure checking ..............................................................................................
Additional facilities that may be obtained by ...............................................................
Handing over to the beneficiary .................................................................................
Recommendations for the yearly checking ...............................................................
Marking, documents, packing, storage, transport, quality and warranty conditions .....
Marking ......................................................................................................................
Documents ................................................................................................................
Packing ......................................................................................................................
Storage .....................................................................................................................
Shipment ...................................................................................................................
Quality and warranty conditions .................................................................................
Responsibilities during the warranty period ...............................................................
Malfunctions which refer to the manufacturer's responsibility ....................................
Malfunctions which refer to the responsibility of the utilities provider ...........................
Malfunctions for which the manufacturer is not responsible .......................................
List and plans necessary for mounting and putting into service ...................................
Plan 1 ........................................................................................................................
Plan 2 .........................................................................................................................
Plan 3 .........................................................................................................................
Plan 4 .........................................................................................................................
Plan 5 .........................................................................................................................
The domestic hot water module, The heating module, Antifrost function, Auto-checking
and safety functions, The boiler shutting down in safety conditions .....................................
The functioning of the heating unit
Other functions concerning the safety of the boiler
Pg
Pg
Pg.
Pg
Pg 4
Pg 5
Pg 5
Pg 6
Pg 6
Pg 7
Pg 7
Pg 8
Pg 8
Pg 9
Pg 10
Pg 10
Pg 10
Pg 11
Pg 11
Pg 12
Pg 13
Pg 13
Pg 13
Pg 13
Pg 13
Pg 15
Pg 16
Pg 17
Pg 17
Pg 18
Pg 19
Pg 19
Pg 20
Pg 20
Pg 20
Pg 20
Pg 20
Pg 20
Pg 20
Pg 21
Pg 21
Pg 22
Pg 22
Pg 23
Pg 23
Pg 24
Pg 25
Pg 26
Pg 27
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INTRODUCTION TO THE BOILER
General description of the boiler
The wall hung gas boiler is a fuel gas-consuming appliance which has the role of
turning the fuel gas power into thermal energy through burning.
This appliance runs unsupervised due to its protection and control systems.
The boiler is made of many parts that we are going to describe in the following
chapters.
The gas enters inside the boiler through the gas feeding circuit made of a coupling
and a reducing valve which will be set at 20 mbar for G20 A(L) and A(H) subgroups.
The reducing valve will be set at 37 mbar for LPG (propane subgroups and propane-
butane mixtures). Thus it gets into the gas valve which has the role of controlling the
gas discharge at the outlet to the burner.
The ignition achieves by flame activating by an ignition electrode, by means of
an ignition transformer.
During the combustion, the flame sensing is made by an ionization sensor.
The boiler type with forced draft is provided with a fan which evacuates the
exhaust gases. In the initiation phase, this evacuates an air volume to provide an
unexplosive ignition. The explosive ignition may occur due to a gas storage from the
non-operating period.
The combustion chamber, as a plate parallelotope, interior ceramics fibre-lined,
is designed to allow the transfer to the exchanger with less heat leakages.
In case of the CH circuit of the two heat exchangers type, the heat resulted from
fuel gas ignition is taken over by the monothermal heat exchanger and sent to the
thermal agent (water) which is delivered by the circulating pump through the heating
installation. In case of on the DHW circuit, a water discharge is detected by the
flowmeter, the 3- way gas valve is energized. The 3- way gas valve achieves the
transition from the central heating circuit on the short circuit through the plate heat
exchanger (the main plate heat exchanger) and the heat transfer is realized by means
of this to the DHW circuit (the secondary plate heat exchanger).
The scavenging is realized by means of the fan.
The running protection and control are performed electronically. The boiler setting
is made from the control board (see the chapter concerning this subject).
DESCRIPTION OF THE BOILER
3
BOILER
TYPE
C15 SPV 24 MEFM
Useful power
Accessories
[kcal/h] The fan The pump The
expansion
vessel
DHW
instant
production
20670 XXXX
SYMBOLS
S- with instant production of DHW (without cumulation)
P- with pump
V-with closed expansion vessel
24-the maximum power output in kW
M- the burner is supplied by a continuous modulating valve
E- the ignition and the control of the flame are electronically-made
F-the forced scavenging
M-monothermal
OPTIMUS MT

C 15 SPV 24 MEFM
GENERAL INSTRUCTIONS CONCERNING THE BOILER SAFETY
!
!
!
!
!
!
!
!
!
!
!
!
This manual is part of the product and it has to be given to the user.
Read this manual carefully and keep it carefully for a further application by the user and by the
mounting and installing authorized personnel.
The installation, the putting into service, the service-repair operations and a periodical
technical checking are performed only by authorized personnel in accordance with the regulations
in force. All the indications of this manual must be respected; any exception may cause damages
and the producer isn`t responsible for these.
In case of a defective running of the device, shut it down and call up immediately one of the
breakdown services units.
To guarantee the boiler efficiency and its correct running it is recommendable that the boiler be
checked yearly by the qualified personnel, complying with the manufacturer`s conditions.
If the device is sold or given, make sure it is delivered with its technical handbook in order to be
consulted by the new user/ installer.
In case of some components damaging there will be used only the original components. You
must have the manufacturer`s acceptance to use some components from another company, you
must obtain the written acceptance of the producer so that you may use those components.
This boiler will be used properly.Any other use will be considered unsuitable.
There is excluded any contractual or extra-contractual responsibility of the producer for the
damages caused by the installing or usage errors and by the non-observance of his instructions.
The maximum limit of the water hardness inlet is of maximum 5ºF (French degrees) on the
DHW circuit, equal to 50 mg CaCO2 or an equivalent quantity of other salts as Ca and Mg. It is
compulsory to install a softener filter on the domestic water circuit, a mechanical impurities filter (Y
filter) on the CH installation return and a pressure controller on the gas supply circuit.
It is recommendable to use these boilers types presented in this manual to heat areas of 150
mp (at a medium height of 2,5 m of the heat volume).
Unsubmitting to these technical manual regulations as to the warranty certificate leads to
warranty loss.
4
RESETMOD

Name
Type OPTIMUS MT - C 15 SPV 24 MEFM
Forced
Sealed
92,7%
93,7%
10 - 23,7 kw
10,9 - 25,49 kw
20 mbar
35 mbar
30 - 37 mbar
230 VAC, 50 Hz
160 W
40 kg
1 L
1,1- 2,6 Nm /h
0,4 - 1,07 kg/h
Draft
Combustion chamber
Efficiency at maximum load
Efficiency at minimum load
Useful power (min/ max)
Burner nominal load (min/ max)
Gas pressure
NG on coupling ( behind the reducer)
NG on maximum admitted output
LPG
Power-supply
Power consumption
Weight
Heat exchanger output
-
0,5 ºi 3 bar
40 - 80°C
3/4"
1/2"
3/4"
275
415
700
850
7 L
Central heating
Minimum and maximum admitted pressure
Temperature on the heating circuit
Connections - inlet outlet central heating
- inlet outlet DHW
- gas supply
Dimensions - depth (mm)
- Width (mm)
- Height (mm)
- With mounted elbow (mm)
Expansion vessel with membrane
NG consumption (8500 kcal/ Nm3)
At useful power (max/ min)
LPG consumption (20425 kcal/ kg)
At maximum output
3
5
TECHNICAL CHARACTERISTICS
CONSTRUCTIVE AND FUNCTIONAL CHARACTERISTICS
30 - 60°C
13,5 l/min
9,7 l/min
7,5l/min
DHW temperature range
Flow values Ät °C=25
Ät °C=35
Ät °C=45

PRINCIPAL COMPONENTS OF THE BOILER
The heat generator
It is designed to supply the necessary heat for the heating exchange with the heating and DHW
circuits. It is made of the following elements:
The gas feeding circuit will be performed through a reducing valve which will set the inlet
pressure at 20-25 mbar NG, respectively 30-37 mbar for LPG.
It is compulsory to mount a pressure controller on the gas
feeding circuit.
1. The gas valve
2. The burner
is designed to allow a
continuous modulation of combustion,
supplying the minimum, medium and
maximum gas pressures required by the
boiler running at the minimum, medium and
maximum load. The connector between the
gas valve and the burner is the copper pipe
(14x1).
is stainless-made, forced or
atmospherics, with 11 cannular inclines and it
runs with fuel gas (NG or LPG). The burner
output is set in a modulated system by means
of a gas modulating valve so that it supply a
maximum useful power of 23,7 kW.
3. The combustion chamber is design to
allow the heat transfer to the heat exchanger
with less heat leakages. We chose a simple
constructive solution as a rectangular piping
of 170 mm between the burner and the heat
exchanger. To reduce the heat leakages, the
piping walls are isolated indoor with heat
insulating material (ceramics fibres).
4
3
2
1
Domestic cold water pressure
Exhaust gases temperature at rated output
Burned gases connection ( input- output)
Burned gases connection length
Orientative values
Maximum water content in the installation
Maximum surface of the precinct
0,2 - 8 bar
142,4°C
O 100 / O 60
Max 3 m
150 l
150 m²
6

7
4
The boiler is provided with a fan for scavenging.
The flue system and the air supply (for the boiler with forced draft) is made of two concentric
pipes connected to the outside of the room where the boiler is mounted.
is monothermal, the domestic water is
heated through the plate heat exchanger.
From the power point of view the rated output is of 24 kW and the efficiency over 93%.
-
The fan
The exhaust gases/ water heat exchanger
The exhaust gases/ water heat exchanger
The heating and DHW circuits - Hydraulic circuits
- DHW circuit is with plate heat exchanger.
5
7
They are designed to allow the thermal
transfer to the external heating
and DHW installations.
- the loading circuit of the installation is
made of the valve and the copper pipe
connected to the domestic cold water
supply line;
- the relief valve of the circuit is designed
to reduce the pressure from the heating
circuit and to open at 3 bars full
pressure;
- the ventilation circuit of the installation
is made of an air-release valve which
allows the air discharge from the heating
circuit, mounted on the circulating pump
shell;
- The heating agent recirculating pump (7)
is designed to supply the output
necessary for the heating agent recycling
through the heating circuit;
- Expansion vessel is designed to allow
the expansion processes from the heat
installation, preventing from hydraulics
overstraining or damaging. This has a
capacity of 7 litres.
- The automatic by-pass circuit is made of
a copper pipe of 14x1 mm fixed between
the heating circuit turn and return and a
safety valve set to open at 0,3 bar to
allow the heat carrier recycling through
the heat exchanger and pump, in case of
some pressure differences,
between the external heat installation
turn and return at over 0,3 bar.
The heating circuit

8
The command and control system of the boiler running performs:
The command and control system is made of the following components:
- the ignition and the protection when the flame is extinguished, provided by the electronic
ignition;
- the protection when the gas is switched off, provided by electro-valve;
- the water pressure signalling in the boiler, provided by minimum pressure sensor;
- the temperature signalling on the heating and DHW circuits, provided by the electronic board
functions;
- the setting of the heating cycle following the instructions of the temperature control switch;
- the safety of the boiler against excessive temperature, provided by the safety thermostat at
overpressure, through the safety valve and at water leakages through the minimum pressure
switch from the circuit;
-protection against draft deficiency, by the fan derangement or the exhaust piping blockage of
the exhaust gases, provided by the combustion pressure switch .
-the electronic board
-
- heating circuit temperature
sensor
- DHW temperature sensor
- Flowmeter
- Ignition/ ionization electrode
as a
controller of the boiler running
(see the attached drawing).
the measuring and pilot cells
of the functional parameters for the
boiler
which sends the
temperature signal to the electronic
control block of the heating circuit.
which sends the temperature signal
to the electronic control block of the
DHW circuit.
as a detector of
the DHW consumption which sends
the DHW circuit running command
to the electronic control block.
(8) with double role, of combustion
flame activation and sensing.
- Air pressure switch (9)
- Temperature sensors
- Temperature switch (10)
- Programmer ambient sensor
- Water pressure sensor
The external shell
as a detector and controller of the exhaust gases, which
determines the heating and DHW circuits running.
as reading the temperature on the heating circuit (the electronic
board display).
as a detector and controller of the maximum temperature on the
heating circuit which sends the non-running command of the heating circuit in case a maximum
admitted temperature is exceeded.
as setting the ambient temperature from a room (optional).
as a detector of the minimum pressure on the heating circuit.
It has a parallelepipedal shape. It is detachable and electrostatically painted.
The shell covers the pressurized combustion chamber and the enclosed installations.
9
10
8
11

For designing the central heating installation we must be aware of the hydraulic features of the
pump.
9
The hydraulic characteristic of the pump
Pressure pump P[mca]
Pump output Q[mc/h]
the third stage of
the speed
the second stage
of the speed
the first stage of
the speed

10
MOUNTING-INSTALLATION INSTRUCTIONS
The chapter addresses both to the qualified persons which contribute to the boiler installation
and to the beneficiary which is concerned that the effected works to be done following the
safety rules in operation of all the installations which contribute to the good running of the
boiler.
!
!
!
The boiler installation is not the same with the boiler
starting.
The boiler starting must be done by the authorized
personnel in accordance with the current legislation.
There is no guarantee without the authorized personnel
signing the putting into service statement, and the
company withdraws any boiler guarantee or running
responsibilities.
The boiler location
The central heating
In accordance with the current regulations: The norms for the designing and execution of the
NG supply systems, The norms for the NG supply systems utilization and The norms for the
designing and execution of the liquefied petroleum gas supply systems (LPG).
There are several conditions for installing the boilers:
-The appliances have the protection IP 40 level.
-The boiler may be installed in any room with an air humidity of maximum 60% between
20-30º C.
The heating system will be designed by the qualified and authorized personnel, in the
mounting/installing activities.
It is important to pay attention to the pipes dimensions, head losses and heating elements
while designing the heating system.
The installation filling up must be done with softened water.
Couplings may be executed by gluing or compression fittings for the copper pipes, coupling
etc. The pipes must be provided with the necessary inclination for the ventilation and a light
evacuation to the adequate points from the installation.
Couplings and sockets
The evacuation. The evacuation points must be situated in the practicable places which allow
the water drainage from the heating circuit. It is recommendable that the minimum diameter should
be ½.
The ventilation. It is recommendable that the manual ventilators should be introduced on each
heating element (central heating). The water contains a certain quantity of resolved gases at the
first filling as well as the further water fillings of the heating system.
Once the system has been heated, the gases will be collected in the highest points of the
system whence they must discharged. The installation of some (manual or automatic) ventilators
will allow the evacuation both at the first filling and during the running, in these system points.
The filling. After the pipes connecting, the two circuits will be filled up with water gradually (the
boiler and the installation, respectively the coil from the DHW circuit) till the complete filling and it
should be checked so that there are no leakages.

11
!
!
!
You must not use the boiler empty or only partly filled with
water.
THE USE OF EMPTY OR PARTLY FILLED BOILER MAY
LEADS TO EXPLOSION.
The domestic cold water supply pipe of the DHW
processing circuit remains permanently open (the
closing of the net is made only by the valves from the
discharge points) to allow the dilatation taking over from
this circuit.
MOUNTING-INSTALLATION INSTRUCTIONS
The gas supply
The gas supply (NG or LPG) must be done in accordance with the standards.
* The minimum/maximum inlet pressure in the gas valve, in case of using the natural gas
must be between 25-30mbar static and between 20-25 mbar dynamic.
* The minimum/maximum inlet pressure in the gas valve, in case of using LPG, must be
between 30-50 mbar static and 25-45 mbar dynamic.
In case of not subsuming to these standards the combustion performances will lower.
On installing you must know the gas type that the boiler has been set for, to reset it correctly for
another gas type if it needs.
For exchanging the NG running for the LPG running you must follow two operations:
* The setting from the electronic board which is performed by positioning the J6 jumper
(see the Electrical Diagram) on the two pines LPG module. (The J6 jumper is situated on a
single pine methane gas module).
* The mounting of the nozzles set of 0,77 mm diameter used for LPG running. (The
diameter of these nozzles is 1,3 mm for methane gas).
The exchanging for NG is realized by performing the setting operations, from above, in the
reverse sense.
The setting will be performed by the producer following the beneficiary request or the service
authorized according to the current standards, operation which is performed on putting into service.
!You must install a pressure controller on the gas supply
circuit.
!The gas supply pipes must not have diameters smaller than
the boiler coupling.
Electric power supply
The boiler must be connected to a monophase net of 230 V-50 Hz with zero protection,
through the 5A fusible plugs. The colours semantics will be as follow: brown= phase, blue=null,
green-yellow= earthing.
The external connections must be according to the current standards. The connection to the
electrical network of the building must allow a complete electrical isolation of the boiler in case an
intervention must be done.

12
!
!
You must not shut down the exhaust checking device, because
your life and health will be in danger.
Only the qualified personnel will do the replacement, according to
the current legislation and to the original pieces used by the producer.
!It is obligatory to place the boilers in areas with ventilation
according to the current standards. The technical instructions
should be studied before mounting/ installing, starting or servicing.
It`s forbbiden to install the boiler without earthing.
THE COUPLING FOR SCAVENGING
Without coupling to the chimney
The scavenging is made through a pipe of 60 mm diameter, coaxial with the air inlet
pipe of 100 mm diameter. The exhaust pipe is within the inlet one.
The input-output coaxial flue system is delivered with the boiler. It is made of an elbow,
input-output pipe and the necessary fittings.

13
INSTRUCTIONS FOR THE FINAL USER (BENEFECIARY)
The control, protection and automation elements provide:
* The flame ignition
* The flame sensing
* The temperature and water signalling in the boiler
* The temperature regulation on the heating circuit
* The temperature regulation on the DHW circuit
* The pump starting at the heating water demand
* The safety of the boiler at overheating and overpressure
* Draft deficiency (air pressure switch)
* The boiler safety at minimum water level (water pressure switch)
* The DHW demand sensing (flowmeter) and giving priority to this discharge
The indicators and the operating buttons are placed on the control board.
The chronothermostat or the room thermostat may be installed on demand.
UTILIZATION INSTRUCTIONS
The control board
Display board LCD in the user module
SW8
SW 7
SW2
Button - Operation function
This button shuts down/ opens out the boiler (the boiler is still connected to the
tension). In the module Off the board is deactivated completely excepting the symbol 1.
When activating, the activated symbols appear on the LCD display while the symbol 1
disappears
Summer/ winter: Pressing this button, you select summer or winter module. The activated
symbols are two for the summer (in this module, any value of the temperature is
displayed in stand-by, while, if there is any DHW demand, the DHW setting temperature
will appear) and 3 for the winter module.
Reset from blocking: reset if the boiler is in Err E2, otherwise there will be no result.
On/Off:
Fig 1. The control board for OPTIMUS MT
SW3
DISPLAY
SW 5
SW1
SW6
SW4
SW7
SW2
SW8

14
SW 4
SW3
SW6
SW1
SW5
(-)
(+)
(-)
(+)
Comfort: pressing this button, you select the comfort module(symbol 6 on) and the
set range of the domestic circuit may decrease. Press again to cancel it (symbol 6
off).
Heating: Pressing the button once, the temperature preset by the heating is
displayed; the setting will decrease if you keep pressing. While visualizing the set
point by the heating, the symbol 8 is flickering. If the external probe is activated, the
temperature of the core circuit will not be changed directly, but two different
parameters will decrease: the wanted temperature into the room and after 5
seconds the symbol "- -" will appear on the display and it holds for one second,
then the dispersion coefficient into the building is displayed and may be changed.
Heating: Pressing the button once, the temperature preset by the heating is
displayed; the setting increases if you keep pressing. While visualizing the set point
by the heating, the symbol 8 is flickering. The heating, the temperature from the
room and the dispersion coefficient may be increased in the same way as SW3.
DHW: Pressing the button once, the preset temperature of the DHW is
displayed; if you keep pressing the setting will decrease. While visualizing the set
point by the heating, the symbol 7 is flickering.
DHW: Pressing the button once, the preset temperature of the DHW is displayed; if
you keep pressing the setting will decrease. While visualizing the set point by the
heating, the symbol 7 is flickering.
Chimney sweep" function: If you press SW7 and SW8 simultaneously, With the boiler
in Off position, you will activate "Chimney sweep" function, the released temperature is
displayed and the symbol 5 starts flickering. After the normal starting cycle of the
heating it starts at maximum capacity. This situation persists till the temperature of the
core circuit reaches a safety threshold, after which the heat is deactivated and it will be
activated again in the moment that the temperature reduces below the limit. Any DHW
demand activates this function, but it may be done manually by pressing the button
SW7 and the symbol 5 will vanish.
-the heating system 30-80ºC
-the heating from bottom system 15-40ºC
-domestic hot water 30-60ºC
-DHW comfort 35-45ºC
-External sensor:
the temperature in the room 10-30ºC
dispersion coefficient 5-35ºC
-ignition power (soft-start) 0-99% of modulation current
-max. heating power 0-99% of modulation current
-max. fan speed 0-99% of fan speed
-min. fan speed 0-99% of fan speed
SW7+SW8
Values range controlled by the display panel LCD
Electronic board operating

15
DHW module in case of monothermal boilers (symbol 7 on)
The heating module (symbol 8 on)
Comfort plus function (symbol 13)
Anti-frost function (symbol 4)
"Chimney-sweep" function (symbol 5)
The self-checking system and the protection function
Ignition demand in the DHW module takes priority of the heating module. The burner
ignition takes place when a DHW demand appears; the boiler tries to supply hot water to the
user at a preset temperature. The demand is detected through the flowmeter. In this case, the
pump runs. If the hot water temperature is higher than the preset value, the boiler will shut
down. As soon as the heat wasted, the boiler is activated again.
If the boiler is on the winter programme and by deactivating the room thermostat, the domestic
water temperature is lower than the one set before, the boiler will carry out the ignition at soft-
start power, the flame modulation starts and keeps running till the boiler reaches the running
position. If the water temperature is higher than the previous set limit, the boiler will shut down
but the pump will still be active; re-ignition occurs when the water temperature decreases below
the set value, on condition that a lapse of time "of preventing from appearing the frequent
cycles" have passed. The maximum power of the boiler in the heating module is set by means
of the buttons from the control panel during
the heating.
Symbol 13 inermitent - the conthrol system of boiler is achieving the mentain of temperature in
the primary circuit as so, at the request of DHW the time necessary for reaching the setted
temperature to be smaller then 5 seconds. This function is activated automatically at first
request of DHW and remains activated during 60 minutes.
When the sensor of the system detects a temperature lower than (6ºC), the burner is
activated in the heating module and the pump starts running. This state persists until the
cancellation temperature of the anti-frost function is reached (20ºC).
This function is created specially to cancel the normal adjustment of the boiler control,
allowing it function at the maximum heating power. The function is useful during installation and
the moment when the combustion products are verified according to the current standards. The
function may be deactivated manually from the control board or at any other DHW demand.
The system is provided with several diagnostic functions, signalling the operating position of the
boiler and the disturbances type which may occur on the control board display:
-the domestic water temperature:
the heating temperature in ºC (from 0ºC to 99ºC) or the DHW system is displayed ( if available)
-blocking the adequate temperature (irregularity):
in case of a failure in detecting the flame at the end of the three ignition cycles, the mother is
to block and the symbol flickering ErrE2 occurs on the control panel display.
-parasite flame (irregularity)
in case of a presence of a parasite flame, the symbol Err E1 flickering occurs.

16
- insufficient pressure of the water in the hydraulic core circuit (irregularity)
- Absence of draft on start (irregularity):
The boiler shutting-down in safety conditions.
The pressure visualizing
:
in case the pressure sensor measures an insufficient pressure of the water in the system, (<0,5
bar) the burner and the pump are deactivated and the flickering intermittent symbol Err E1
occurs on the display.
Disturbance of a temperature sensor (irregularity):
1.Sensor for the central heating water: any disturbance of the sensor caused by a wrong
contact or a short-circuit leads to the immediate deactivation of the burner, pump and the
flickering intermittent symbol Err E1 occurs.
2.Sensor for DHW: any disturbance of the sensor caused by the wrong contact doesn`t lead to
the immediate deactivation of the burner but to displaying the flickering intermittent symbol Err
E4 for monothermal boilers.
In case the pressure switch doesn`t commute the
TW pre-cleaning in due time, the boiler won`t start running and the intermittent symbol Err E5
will occur after 10 seconds. This irregularity vanishes when the flame is detected at the end of
the operating cycle.
-Removing the combustion products causes the activation of the safety devices (irregularity):
OPEN CHAMBER
The safety devices of the combustion products are activated and cause the boiler automatic
shutting down, the intermittent symbol E5 occurs on display. This irregularity disappears only
pressing the button SW3. In case the limit thermostat (LT) is activated, the system will shut
down automatically and the intermittent symbol Err E8 occurs on the control panel display. This
irregularity persists even if LT is deactivated. To reset the normal operating system it is sufficient
to press the reset button SW2.
In case the final user establishes that the appliance has an abnormal running, if the error codes
keep displaying or if the appliance manifestations can not be understood, he has the obligation
of shutting-down the boiler as soon as possible and in maximum safety conditions. The user
must perform the following operations:
* press STAND BY and the boiler shuts down
* disconnect the boiler from the electric power supply circuit by unplugging
* Disconnect the gas supply circuit by switching on the gas valves
* Interrupt the DHW and the DCW circulation by switching on the gas valves corresponding to
these circuits.
After boiler shutting down in maximum safety conditions, the user will call the service unit he
belongs to (see chapter 1, subchapter 1.4).
The pressure from installation is displayed and it is useful to installation filling up. The
beneficiary will check recurrently whether the pressure in installation has lowered below the
value set on filling.
The pressure will maintain between 1-2 bars. If the minimum pressure lowers below the value of
0,5 bars the boiler will display the E1 signal and it will shut down. If the pressure exceeds the
value of 3 bars, the safety relief valve will open and it will release the system from the
accumulated pressure.

17
THE BOILER RUNNING
ANOTHER FUNCTIONS CONCERNING THE BOILER SAFETY
1) The pump post-circulation
2) The pump anti-blocking function
3) The 3- way valve anti-blocking function
The antifreeze function
The boiler running will be < without permanent control> provided automatically by the controllers
installed on the boiler, and eventually by the environment devices (room thermostat). These
devices must be set at the temperature corresponding to the controlled environment.
a. the temperature setting on the heating circuit will be between 40-80º
b. the room thermostat will be set at the wanted temperature in the room.
In case the central heating installation is drawn off the tension during the cold period or in case,
due to some disturbances, the water temperature from the boiler will be below zero degree for
more than 2-3 hours, the boiler, the heating installation and the domestic water installation will be
exhausted.
Also the boiler supply will be disconnected from the current and gases net.
Each time the boiler is shutting down (in the heating module), the pump keeps running for a
short period of time so that it could prevent from water overheating in the main heat
exchanger.
If the boiler doesn`t effect any cycle during a 24 h period, the pump will start running for a few
seconds to avoid blocking caused by the non-running.
On each pump shutting down, the deflection valve is activated for one second and then it
reverts to the initial position.
4)
When the temperature sensor detect a temperature lower than 6oC,the burner is activated in
the heating module and the circulation pump start to operate.

Additional facilities you may obtain:
-Mounting an exterior temperature sensor, the boiler adjusts the heat carrier temperature
depending on the temperature value from outside the building, the room wanted temperature
and the heat leakage coefficient through the building walls.
90
80
70
60
50
40
30
20
10
0
- 40 - 20 020 40
Outdoor temperature [°C]
Recommended temperature [°C]
90
80
70
60
50
40
30
20
10
0
- 40
- 20 020
40
Outdoor temperature [°C]
Recommended temperature [°C]
T. amb = 30°C
Ke = 35
Ke = 5
T. amb = 10°C
The heating circuit temperature
diagram depending on the
outdoor temperature at
different set room
temperatures and Ke=1
The heating circuit temperature
diagram at different set
dispersion coefficients
Heating temperature=Room temperature +Ke*(room temperature-outdoor temperature)
Room temperature-the temperature of the room
Outdoor temperature-the external temperature
Ke- dispersion coefficient
18

19
Delivering to the user
RECOMMENDATIONS FOR YEARLY CHECKING
It is compulsory that the qualified personnel to instruct the user in great detail about the following
aspects on boiler starting:
The boiler starting and the shutting-down procedures, in safety conditions by checking the
following elements:
* the electric power supply respecting the polarity
* gas supply
* the central heating circuit supply and loading
* the filling valve must be closed
* the pressure in installation by the manometer displaying from the control panel (1-2 bars)
* the valves from the DHW circuit should be opened
The running mode of the boiler and the possible problems which may occur. Also, the
importance of each button or switch from the control panel will be explained.
The user is warned that a water pressure falling in the system is caused by the heat carrier loss
which must be rectified before using the boiler again.
It is recommended that the user should ask for a checking of the boiler running by an
authorized person at least once a year.
The user is warned upon the precautions against freezing.
The instructions manual is delivered to the user.
At the end of the instruction they must sign a document of putting into service, as he
assimilated the proper mode of the boiler utilization. This document is signed by the authorized
person too who performs the putting into service, who trained.
The person who performs the starting has the right of refusing the putting into service of the
boiler if he establishes that there are some irregularities, and he won`t contract the document till
these irregularities are remedied.
The one who performs the putting into service has not the obligation of rectifying the mounting
errors but he assumes the responsibility that the installations correspond to the chosen boiler from
the functional and constructive point of view.
It is compulsory to check the boiler at a least two years period.
For a good running of the boiler and prolonging the boiler life it is necessary to be checked by
an authorized person at least once time a year. It is recommendable that this checking to be done
before the cold period, when the boiler won`t be used at the maximum capacity. The following
operations will be performed as: the main burner running is controlled and the burner is cleaned in
case this thing is compulsory; the boiler exhaust flue is checked and cleaned; the gas valve
controls are verified; the pump is verified; the scavenging system running is verified; the air
pressure switch running and the flue system tightness are verified; the combustion correctness is
checked, by analysing the exhaust gases; the gas supply system tightness is verified, the district
heating and the DHW circuits tightness are checked, the electrical installation is verified..

20
STAMPING, DOCUMENTS, PACKING, STORAGE, QUALITY AND
GUARANTEE CONDITIONS
STAMPING
PACKING
STORAGE
SHIPMENT
QUALITY AND GUARANTEE CONDITIONS:
A designated card is fixed on each product by sticking with following:
* The manufacturer company
* The name of the product
* The serial number and the lot
* Number of CE type examination certificate
* Quality Department authority sign
* The boiler type and size
* The gas type which the input rated pressure has been set for
The boilers will be packed into the cardboard boxes, protected by boxboard angles.
The boiler will be delivered with all the installed components, less those from theAppliance book.
The boilers storage is achieved in dry places and protected by the bad weather and the chemical
agents.
During the shipment all the necessary measures must be taken to avoid the strokes or the
boiler damaging.
The guarantee is given if the following conditions are provided:
* The correct installation and setting by the authorized personnel.
* The yearly examinations are achieved on beneficiary demand and at the expense of the
beneficiary, the first year examination is compulsory to maintain the guarantee for the first two years
of usage.
* The exchanged components will be warranted for one year. This doesn`t mean that the
set guarantee period will prolong for the entire device.
* The guarantee period prolongs from the moment the user has claimed the device
breakdown and till the time the device will be putted into service again.
* The heating installation designing and execution should be performed by qualified
person and a qualified unity (if need be).
* It is necessary to check and clean the installation before mounting the boiler in case of an
existing installations.
* The interventions during the warranty period will be performed only by the authorized
personnel of the manufacturer company.
Any repair by another person except the authorized personnel of the manufacturer company
leads to warranty loss.
DOCUMENTS
Each boiler is delivered with:
Technical manual, quality and guarantee certificates,CE conformity declaration.