Kober Motan BP120L V1 User manual

rev. 02.04.2020 © KÖBER SRL VADURI BRANCH
KÖBER S.R.L.
VADURI BRANCH
INSTALLATION AND USE MANUAL
NAME OF APPARATUS / EQUIPMENT
DOMESTIC HOT WATER STORAGE TANK
Edition: 1
Revision: 3
Date: 27/07/2022
Form code F-POV-05-07
Page: 1 of 20
KÖBER S.R.L. Dumbrava Rosie
Vaduri Branch
DOMESTIC HOT WATER STORAGE TANK
TYPE BP120L_V1
INSTALLATION AND SERVICE TECHNICAL MANUAL
Vaduri, Zorelelor Street no.25, Alexandru Cel Bun Commune, Neamt 617511,
Romania, Tel.: [phone], Fax:[phone]
www.motan.ro

rev. 02.04.2020 © KÖBER SRL VADURI BRANCH
KÖBER S.R.L.
VADURI BRANCH
INSTALLATION AND USE MANUAL
NAME OF APPARATUS / EQUIPMENT
DOMESTIC HOT WATER STORAGE TANK
Edition: 1
Revision: 3
Date: 27/07/2022
Form code F-POV-05-07
Page: 2 of 20
Dear Client:
We congratulate you on your decision to use our product.
The MOTAN brand has been on the market since 2002, offering you quality and performance at a reasonable price. We
hope you will be completely satisfied with this product.
This product was built using high quality components, the highest class technologies, ensuring the product a modern design
and high reliability.
This document comes to your support with complete information related to the use and installation of the boiler.
Please read this manual carefully and keep it for future reference.
Manufacturer: KÖBER SRL Dumbrava Rosie Vaduri Branch
The boilers manufactured by KÖBER S.R.L. DUMBRAVA ROSIE VADURI BRANCH bear the marking of EC conformity.
In this way we guarantee the conformity of the products we offer. The quality of our products is the result of permanent
investment in the implementation of the latest technology in research and development, as well as of our professionalism,
experience and the dedication of our employees.
Please read the information contained in this manual carefully before you use the boiler.
The manual must be kept and be available at every moment.
This manual is the property of KÖBER S.R.L. DUMBRAVA ROSIE VADURI BRANCH. Its copying or reproduction is forbidden
without the written consent of KÖBER S.R.L. DUMBRAVA ROSIE VADURI BRANCH.
COMMERCIAL NAME DESCRIPTION TYPE
BOILER B120L
Monovalent storage tank (with internal coil and electric heater) for domestic
hot water
BP120L V1

rev. 02.04.2020 © KÖBER SRL VADURI BRANCH
KÖBER S.R.L.
VADURI BRANCH
INSTALLATION AND USE MANUAL
NAME OF APPARATUS / EQUIPMENT
DOMESTIC HOT WATER STORAGE TANK
Edition: 1
Revision: 3
Date: 27/07/2022
Form code F-POV-05-07
Page: 3 of 20
CONTENT
1GENERAL.............................................................................................................................................................. 4
1.1 Applicable standards and directives....................................................................................................................................4
2GENERAL PRESENTATION OF THE PRODUCT....................................................................................................... 4
2.1 Use according to specifications............................................................................................................................................4
2.2 Advantages............................................................................................................................................................................4
2.3 Components...........................................................................................................................................................................4
2.4 Technical data........................................................................................................................................................................5
2.4.1 Dimensional and constructive characteristics.....................................................................................................................5
2.4.2 Functional characteristics......................................................................................................................................................6
2.5 Design indications...................................................................................................................................................................7
2.5.1 Boiler principle diagram.........................................................................................................................................................7
2.5.2 Boiler operational modes.......................................................................................................................................................7
2.6 Boiler equiped with Mixing valve kit......................................................................................................................................8
3INSTALLATION INSTRUCTION............................................................................................................................... 9
3.1 Transport to the mounting place...........................................................................................................................................9
3.2 Installation.............................................................................................................................................................................10
3.2.1 Wall mounting.......................................................................................................................................................................10
3.2.2 Boiler connection .................................................................................................................................................................10
3.2.3 Filling the boiler with water ..................................................................................................................................................13
3.2.4 Emptying the boiler ..............................................................................................................................................................13
3.2.5 Electrical diagram................................................................................................................................................................14
4USE INSTRUCTIONS............................................................................................................................................. 15
4.1 Boiler startup..........................................................................................................................................................................15
4.2 Indications regarding boiler decommissioning..................................................................................................................16
5MAINTENANCE .................................................................................................................................................. 16
5.1 Boiler cleaning ......................................................................................................................................................................16
5.2 Anode checking...................................................................................................................... Error! Bookmark not defined.
5.3 Replacing the anode.............................................................................................................. Error! Bookmark not defined.
5.4 Checking heater ..................................................................................................................................................................17
5.5 Checking the hydraulic safety group.................................................................................................................................17
5.6 External cleaning..................................................................................................................................................................17
6DISPOSING OF OLD ELECTRICAL AND ELECTRONIC APPLIANCES (DIRECTIVE 2002/96/EC –DEEE)............ 17
7SPARE PARTS ...................................................................................................................................................... 18
8RECORDS OF INTERVENTIONS........................................................................................................................... 20

rev. 02.04.2020 © KÖBER SRL VADURI BRANCH
KÖBER S.R.L.
VADURI BRANCH
INSTALLATION AND USE MANUAL
NAME OF APPARATUS / EQUIPMENT
DOMESTIC HOT WATER STORAGE TANK
Edition: 1
Revision: 3
Date: 27/07/2022
Form code F-POV-05-07
Page: 4 of 20
1GENERAL
1.1 Applicable standards and directives
- SR EN 60335-1 "Safety of household and similar electrical appliances. Part 1: General prescriptions";
- SR EN 60335-2-21 " Household and similar electrical appliances. Safety. Part 2-21:
Particular prescriptions for water heaters with storage facilities";
- SR EN 625 "Central heating boilers using gaseous fuels. Specific conditions for the hot domestic water function of boilers with
two services, with rated caloric capacity lower or equal to 70 kW";
- EN 305: Heating switches – Definitions of heating switches performances and general procedure to determine heating
switches performances;
- SR EN 306 Heating switches – methods to measure parameters necessary for performance evaluation;
- SR EN 247 – Heating switches – terminology;
- SR EN 307 – Heating switches – regulations for the drafting of installation, operation and maintenance instructions ,
necessary for the maintenance of all heating switches performances.
2GENERAL PRESENTATION OF THE PRODUCT
2.1 Use according to specifications
The hot water boiler BP120L_V1, is designed for the preparation and stocking of hot domestic water hygienically, comfortably
and economically using the energy from solar collectors or from gas boiler and/ or electric heater.
The magnesium anode represents an additional protection for water quality and ensures the product a long life, as long as it is
replaced annually.
Attention!
During the warranty period, annual maintenance and replacement of the magnesium anode is mandatory. The
annual maintenance and replacement of the magnesium anode is done at the end user's expense.
Failure to carry out the annual maintenance and replacement of the magnesium anode leads to the loss of the commercial
warranty.
Failure to submit intervention reports for the annual replacement of the magnesium anode entails the loss of the commercial
warranty.
The boiler is designed to operate only in VERTICAL position.
2.2 Advantages
- Long term operation due to the stainless steel construction that observes the norms of food hygiene;
- Heating of a large volume of water due to the heating switch surfaces that reach the bottom of the boiler;
- Reduced heat losses due to thermo-insulation;
- It can be used for the bivalent preparation of hot domestic water, a combination between storage tank and electric
heater.
2.3 Components
The main constructive elements are presented in figure no.1:
A – heater operation indicator lamp
B – adjustable thermostat 0 - 60 0C - heater
command
C - ON/OFF button for heater command
D - adjustable thermostat 0-60°C – three way
valve/ pump command
E – anode assembly – (integrated airier)
F – temperature sensor casing – stainless steel
casing (DIN 1.4301; EN X5CrNi18-10; AISI/SAE
304) – for the mounting of temperature sensor
with maximum 8mm in diameter;
G – thermometer 0-120oC;
H – thermo-insulation (PU foam);
I – exterior jacket made of sponge foil covered in
ecological leather.
J – c o i l corrugated casing DN 20 (3/4'') open
pitched (DIN 1.4404; EN X2CrNiMo 17.12.2;
AISI/SAE 316) - L unfolded = 12m;
K – electric heater 2000W cu incorporated
thermostat;
L – boiler body made of stainless steel
(DIN 1.4404; EN X2CrNiMo 17.12.2; AISI/SAE 316);
M – boiler emptying plug
N – general feeding connector
O - connector V3C / pomp
P – side fixing support
Fig. 1

rev. 02.04.2020 © KÖBER SRL VADURI BRANCH
KÖBER S.R.L.
VADURI BRANCH
INSTALLATION AND USE MANUAL
NAME OF APPARATUS / EQUIPMENT
DOMESTIC HOT WATER STORAGE TANK
Edition: 1
Revision: 3
Date: 27/07/2022
Form code F-POV-05-07
Page: 5 of 20
Figure 2
2.4 Technical data
2.4.1 Dimensional and constructive characteristics
Table 1 presents the technical specifications for the boiler.
Figure 2 and table 2 show the main dimensions and connections.
Table 1
Boiler capacity
liters
120
Thermo-insulation
PU foam
Dimensions:
- length
mm
541
- width
mm
551
- height
mm
1177
Total weight
kg
~ 50
Thermal agent capacity
litri
3.5
Change heat surface
m
2
1,92
Connections:
- coil, thermal agent flow connection
interior screw thread
G3/4”
- coil, thermal agent return connection
interior screw thread
G3/4”
- cold water input, hot water output
interior screw thread
G3/4”
- electrical heater
interior screw thread
G1,1/4”
Table 2
A
Anode connection
RE
Resistance mounting
connection
AC
Hot water output
connection
AR
Cold water input
connection
TI
Thermal agent
input connection
G
Total emptying
connection
RI
Thermal agent
output
connection
ST
Temperature sensor
mounting jacket

rev. 02.04.2020 © KÖBER SRL VADURI BRANCH
KÖBER S.R.L.
VADURI BRANCH
INSTALLATION AND USE MANUAL
NAME OF APPARATUS / EQUIPMENT
DOMESTIC HOT WATER STORAGE TANK
Edition: 1
Revision: 3
Date: 27/07/2022
Form code F-POV-05-07
Page: 6 of 20
2.4.2 Functional characteristics
Boiler BP120L is recommended for the following installations:
- Maximum temperature HDW - 60ºC
- Maximum temperature thermal agent on the primary circuit - 80ºC
- Working pressure on the HDW circuit – recommended 6 bar
- Testing pressure on the HDW circuit – 6-7 bar
1. Regime power – is the power obtained with the heating of hot domestic water at a temperature of 12ºC, at various
discharges, using a thermal agent with a discharge of 0.78 m3/h at the temperature of 80ºC. If other input data is used,
other values of the regime power will be obtained.
o Coil use – table 3
- Average warming time at Dt = 65ºC – 28 minutes
oUsing boiler only with electrical heater
- boiler performance when used together with the electrical heater are presented in Figure 3.
2. Heat losses in Stand-by – 50.5W/24h, according to SR EN15502-1-2012.
Table 3
Tthermal agent
(°C) - input Tthermal agent (°C) - return
Q
thermal
agent
(l/min)
Q
DHW (l/min)
T DHW (°C) Pboiler (kw)
80
44.5
13
10
58.3
31.15
42.8
12
52.8
33.16
42
13
50.6
33.7
40.8
14
47.8
34.5
39.6
15
45
34.4
39.6
16
43.6
34.6
40.1
17
43.2
34.9
38.5
18
40.2
35.2
37.8
20
37.6
35.4
36.6
22
35.4
35.7
35.4
26
32.1
35.7
Figura 3

rev. 02.04.2020 © KÖBER SRL VADURI BRANCH
KÖBER S.R.L.
VADURI BRANCH
INSTALLATION AND USE MANUAL
NAME OF APPARATUS / EQUIPMENT
DOMESTIC HOT WATER STORAGE TANK
Edition: 1
Revision: 3
Date: 27/07/2022
Form code F-POV-05-07
Page: 7 of 20
3. Using boiler together with electrical heater.
Boiler startup when boiler is not full causes damage to the electrical heater.
It is recommended to install the electrical heater only in water with low hardness or average hardness up to 14°dH.
If the water has a hardness higher than de 20°TH (1°TH = French degree = 10mg CaCO3) it is recommended to have a
softener installed in order to prevent a calcareous crust from forming inside the boiler.
Boiler performance when used together with the electrical heater are presented in table 4.
2.5 Design indications
2.5.1 Boiler principle diagram
– figure 4, table 5
Figure 4
2.5.2 Boiler operational modes
- for operation by connection to a gas boiler / solar panel. In this
case, the boiler is equipped with the following components:
- Boiler body made of stainless steel sheet (DIN 1.4404; EN X2CrNiMo
17.12.2; AISI/SAE 316);
- coil (heat switch) – corrugated pipe DN 20 (3/4'') open pitched (DIN 1.4404; EN X2CrNiMo 17.12.2; AISI/SAE 316);
- automation panel: thermostat 0-600C for the control of the 3 way valve or of the recirculation pump mounted on the outside;
- thermometer to visualize water temperature inside the boiler;
- thermo-insulation (PU foam);
- integrated anode – airier assembly;
- total emptying plug.
- for operation by connection to central heating station/ solar panel and electrical heater. In this case, the boiler is equipped
with the following components:
- Boiler body made of stainless steel sheet (DIN 1.4404; EN X2CrNiMo 17.12.2; AISI/SAE 316);
- coil (heat switch) – corrugated pipe DN 20 (3/4'') open pitched (DIN 1.4404 ; EN X2CrNiMo 17.12.2 ; AISI/SAE 316);
- electrical heater 2 kW;
- automation panel: thermostat 0-60 °C for the control of the 3 way valve or of the recirculation pump mounted on the
outside;
thermostat 0-60°C for the control of the electrical heater;
ON/OFF button;
electrical heater operation signaling LED;
- thermometer to visualize water temperature inside the boiler;
- thermo-insulation (PU foam);
- integrated anode – airier assembly;
- total emptying plug.
- for operation only with electrical heater. In this case, the boiler is equipped with the following components:
- Boiler body made of stainless steel sheet (DIN 1.4404; EN X2CrNiMo 17.12.2; AISI/SAE 316);
- electrical heater 2kW;
- electrical heater: thermostat 0-60°C for the control of the electrical heater;
ON/OFF button;
electrical heater operation signaling LED;
Table 4
Rated power in normal regime operation - kW
2
Capacity to be heated at a difference in temperature of 50ºC - liters
80
Heating time from 19ºC to 60 ºC – minutes
230
Protection type
IP 41
Table 5
Pos. Name Equipment
1
Hot water return connection
Standard
2 Thermal agent flow connection
Optional,
depending on
the type
3 Thermal agent return connection
4 Cold water flow connection Standard
5 Anode – airier assembly Standard
6 Temperature sensor jacket Standard
7 Immersed electrical heater
Optional,
depending on
the type
8 Total emptying connection Standard

rev. 02.04.2020 © KÖBER SRL VADURI BRANCH
KÖBER S.R.L.
VADURI BRANCH
INSTALLATION AND USE MANUAL
NAME OF APPARATUS / EQUIPMENT
DOMESTIC HOT WATER STORAGE TANK
Edition: 1
Revision: 3
Date: 27/07/2022
Form code F-POV-05-07
Page: 8 of 20
- thermometer to visualize water temperature inside the boiler;
- thermo-insulation (PU foam);
- integrated anode – airier assembly;
- total emptying plug.
2.6 Boiler equiped with Mixing valve kit
Description:
This valve is specially designed for this application. Thermostat mixing
valve ensures high thermal performance and is able to precisely
control the temperature of the water mixture supplied in case of
variations in pressure, temperature or flow.
Anti-scalding function:
As a safety device, in case of a sudden failure of the cold water
supply at the entrance, the valve immediately closes the flow of hot
water. This prevents dangerous burns.
This performance is also guaranteed if there is a temperature
difference of at least 10 °C between the hot water and the mixed
outlet water. Also, in the event of failure of the boiler's hot water
supply, the valve closes the mixed outlet to prevent dangerous
thermal shocks (performing in accordance with UK specifications,
NHS D08 and BS 7942:2000 standard).
The mixing valve is certified according to EN1111 and EN1287
standards.
Tabel nr. 2 – Tehnical specification of mixing valve
Water outlet temperature - range
30-50°C
Precision
± 2°C
Maximum working pressure (static)
10 bar
Maximum working pressure (dynamic)
5 bar
Maximum inlet temperature
85°C
Maximum inlet pressure ratio
6:1
Minimum temperature difference between
hot water inlet and mixed water outlet to
ensure anti-rust
10 °C
Minimum flow for optimum performance
4 l/min
Legionella bacteria and the risk of scalding
In installations that produce domestic hot water with storage, to prevent the dangerous infection known as Legionella disease,
hot water must be stored at a temperature of at least 60°C. At this temperature, it is certain that the growth of the bacteria
that causes this infection will be completely prevented, but still it cannot be used directly by the consumer.
Temperatures above 48 ° C cause burns very quickly.
The mixing valve protects the user against burning exposed skin, limiting the temperature of the domestic water to
approx. 48 °C.
For example, at 55 ° C the partial burn will occur in approx. 30 seconds, while at 60 ° C the partial burn appears in approx. 5
seconds. For children and the elderly, these values are halved.
Table no. 3 - Exposure time to create a partial burn
Temperature
Adult
Children
70 °C
1 s
--
65 °C
2 s
0,5 s
60 °C
5 s
1 s
55 °C
30 s
10 s
50 °C
5 min
2,5 min
-For the reasons stated above, it is necessary to use a thermostatic mixing valve capable of reducing the temperature at the
point of use to a value lower than that of storage in the boiler and be suitable for domestic
use;
- to maintain a constant temperature even if there are pressure and temperature variations;
- offers an anti-scalding function in case of failure of the cold water supply at the entrance.
Thermal disinfection
The diagram below shows the behavior of Legionella Pneumophila bacteria
depending on the storage water temperature.
In order to ensure a correct thermal disinfection, the value of the storage water must be at
least 60 ° C.
Boiler equiped with mixing valve kit

rev. 02.04.2020 © KÖBER SRL VADURI BRANCH
KÖBER S.R.L.
VADURI BRANCH
INSTALLATION AND USE MANUAL
NAME OF APPARATUS / EQUIPMENT
DOMESTIC HOT WATER STORAGE TANK
Edition: 1
Revision: 3
Date: 27/07/2022
Form code F-POV-05-07
Page: 9 of 20
Hydraulic characteristic
Considering the flow characteristic, the Caleffi 5213 mixing valve
can be used by the consumer at a limited number of consumption
bridges. For this reason, the flow that passes through the mixing
valve is generally the same as that at the point of consumption, for
example: sink, shower, sink, etc.
In order to ensure an optimal performance, a flow rate of at least 4
l/min must be guaranteed at the mixing valve.
The installation must always be dimensioned in accordance with
the legislation in force regarding the nominal flow rate for each
point of consumption.
Adjusting and blocking the temperature in the mixing valve
The temperature is set to the desired value with the upper hexagon screw, below the protective cap.
For increased comfort, it is recommended to adjust the maximum temperature of the hot water, in order to prevent scalding
according to the use according to the table no. 3.
Tabel nr. 3 – types of hot water use
Types of hot water use
Tmax
Bidet
38°C
Shower
41°C
Sink
41°C
Bath tub
44°C
After setting the temperature to the desired value, it locks using the lock nut.
1 - Adjust the temperature; 3 - Using the lid for adjustment; 4 - Lock the set temperature with the lock nut.
OBS: To adjust the temperature it is necessary to remove the front cover of the boiler.
From the factory - the valve is set to the Hot-max position ~ 48 ° C
3INSTALLATION INSTRUCTION
The installation, commissioning, maintenance and repair will be performed by qualified personnel with competent skills in
the domain. Before performing any work on the equipment, it will be disconnected from the main electric energy supply.
3.1 Transport to the mounting place
Transport the boiler completely packaged to the mounting place. In this way, it is best protected during transport.
For transport use adequate auxiliary means. Ensure the boiler against tipping over during transport.

rev. 02.04.2020 © KÖBER SRL VADURI BRANCH
KÖBER S.R.L.
VADURI BRANCH
INSTALLATION AND USE MANUAL
NAME OF APPARATUS / EQUIPMENT
DOMESTIC HOT WATER STORAGE TANK
Edition: 1
Revision: 3
Date: 27/07/2022
Form code F-POV-05-07
Page: 10 of 20
3.2 Installation
ATTENTION!
The boiler will be installed only indoors, protected against frost
Recommended distances to the walls must be observed in order for the anode and electrical heater to de mounted/
dismounted – figures 6, 7. The floor must be plane and must have the necessary supporting capacity.
The boiler must be placed as close as possible to the heating equipment. For thermal performance, all connections must be
thermally insulated so as to minimize heat loss.
ATTENTION!
Do not extend the support legs more than 80 mm.
The floor where the boiler is installed must be plane and must have
the necessary support capacity.
3.2.1 Wall mounting
3.2.1.1 Mounting on the lateral support
The lateral fixing support is not mounted in the factory, it must be mounted by
the beneficiary.
Mounting of the lateral support pos.1 is done with the help of two screws
M10x20 mm pos. 3 which are screwed into the boiler body - figure 8.
On the exterior jacket the place to mount lateral supports is marked. The
exterior
jacket must be cut in order to mount lateral supports.
Before the boiler is mounted on the wall, you must ensure that the walls are
made of reinforced concrete or brick (solid and safe).
3.2.2 Boiler connection
The boiler connection to the water network and electric energy grid is
done by personnel authorized for the mounting/ installation activity.
Please keep in mind the following indications for the boiler connection to the drinkable water network. These indications are
important to ensure the good functioning of the boiler with no faults.
Pressure inside the running water installation should be minimum 1 bar.
It is obligatory to mount the water softener filter and the impurity filter on the cold water flow connection.
It is recommended to connect the equipment as close as possible to the main hot water consumer in order to avoid
heat loss along the pipes.
Figure 8
Figure 6
Figure 7

rev. 02.04.2020 © KÖBER SRL VADURI BRANCH
KÖBER S.R.L.
VADURI BRANCH
INSTALLATION AND USE MANUAL
NAME OF APPARATUS / EQUIPMENT
DOMESTIC HOT WATER STORAGE TANK
Edition: 1
Revision: 3
Date: 27/07/2022
Form code F-POV-05-07
Page: 11 of 20
The boiler is connected to the domestic water installation (see Figure 2 table 2 for the layout of the
connections).
Figure 2, table 1 presents information regarding the cold water flow connections, hot water return connections, thermal agent
flow and return connections. Connections are marked directly on the boiler body with text type label in accordance with
Table 6:
Table 6
No.
Annotation
Symbol
Significance
Description
1 1
- 3 way valve / pump
- Thermostat command for
three way valve/ pump
- connection three way
valve/ pump
2 2
- electrical heater
- Thermostat command for
electrical heater
3 3
- power supply 230 Vac
- power supply boiler 230V
singlephase grid
4 4
- domestic hot water
- boiler hot domestic water
return connection
5 5
- CH flow
- thermal flow from the heating
station is connected
6 6
- CH return
- thermal return from the
heating station is connected
7 7
- cold water inlet
- cold water inlet is
connected to the network
8 8
- water temperature sensor
- temperature sensor is
introduced in the jacket
9 9
- electrical heater
- electrical heater 2000w,
heats the water in the
boiler.
The recommended hydraulic connection diagram of the equipment is indicated in Figure 11, table 7.
Table 7
Pos.
Name
1
Safety valve
2
Turning off tap
3
Manometer
4
One way valve
5
Pressure reducer
6
Y filter
7
Expansion vessel
8
Automatic air vent
Figure 11

rev. 02.04.2020 © KÖBER SRL VADURI BRANCH
KÖBER S.R.L.
VADURI BRANCH
INSTALLATION AND USE MANUAL
NAME OF APPARATUS / EQUIPMENT
DOMESTIC HOT WATER STORAGE TANK
Edition: 1
Revision: 3
Date: 27/07/2022
Form code F-POV-05-07
Page: 12 of 20
ATTENTION!
The hydraulic safety group is not delivered together with the equipment, but it is obligatory to be mounted in the
installation!
The hydraulic safety group will contain at least the following elements:
- tap, position 2 figure 11;
- pressure reducer, position 5 figure 11;
- impurity filter, position 6 figure 11;
- manometer, position 3 figure 11;
- one way valve, position 4 figure 11;
- safety valve, position 1 figure 11;
- expansion vessel, position 7 figure 11.
- automatic air vent, position 8 figure 11.
Careful!
In order to grant the guarantee, the installation of the following accessories on the cold water supply connection of
the boiler is mandatory: installation sealing valve; pressure reducer; impurities filter, pressure monitoring manometer;
one-way valve; safety valve and expansion vessel.
CAREFUL! Filling the installation with antifreeze agents (antifreeze) is not covered by the warranty.
CAREFUL! Domestic cold water must comply with the requirements regarding the quality of drinking water:
- The pH of the water must fall within the following limits: 7 <pH <8.5. This value of the pH in the installation must also be
correlated with the correct ventilation. The presence of oxygen in the heating system is very harmful and can lead to
corrosion.
- Water hardness must fall within the limits: 5°F <TH <15°F (5°F (French degrees), the equivalent of 50mgCaCO3 or an equivalent
amount of other Ca and Mg salts);
- The maximum allowed free residual chlorine content of 0.5 mg/l and the maximum allowed chloride level of 250ppm.
- also for granting the commercial guarantee, water supply pressures higher than 5 bar are not allowed;
Safety valve
The safety valve must be 0,6 Mpa (6 bar).
The evacuation pipe connected to the evacuation of the safety valve must be facing downwards, protected from
condensation or frost and opened to the atmosphere.
Pressure reducer
Boilers for the preparation of hot domestic water MOTAN have been produced for maximum working pressures of 6
bar and have been tested at a pressure of 7 bar.
If the cold water pressure level fluctuates or it is higher or equal to 0,5 Mpa (5 bar), it is recommended to install a
pressure regulator (position 5 figure 11), at the entrance of the sanitary circuit into the boiler or at the main entrance of
the domestic water pipe. Pressure at the exit from the pressure regulator must be adjusted to a maximum level of 5 bar.
Expansion vessel
In order to avoid overpressure inside the boiler, it is obligatory to install an expansion vessel (position 8 figure 11).
The expansion vessel is necessary to maintain a constant pressure and to prevent ram hits inside the pipes or
accidental overpressure.
One way valve
The one way valve incorporated in the hydraulic safety group will not allow the return of hot water installation.
Automatic air vent
Automatic air vent removes air from the heating system.

rev. 02.04.2020 © KÖBER SRL VADURI BRANCH
KÖBER S.R.L.
VADURI BRANCH
INSTALLATION AND USE MANUAL
NAME OF APPARATUS / EQUIPMENT
DOMESTIC HOT WATER STORAGE TANK
Edition: 1
Revision: 3
Date: 27/07/2022
Form code F-POV-05-07
Page: 13 of 20
3.2.3 Filling the boiler with water
To fill the boiler, proceed as follows:
- connect the return (TI) and return (RI) of the coil to the CH circuit of the gas boiler;
- charge the coil (CH circuit) with a pressure of 1.5 - 2 bar;
- ventilate the coil (Caution! it is mandatory to install the automatic vent pos. 8 – figure.11);
- open the valve located on the hydraulic group (position 2 figure 11) to allow the device to be supplied with water.
- open the general water supply;
- open a hot water tap (sink or bathtub) to allow air to escape from the boiler (valid for the first filling). Act in parallel and the
aerator located on the upper cover of the boiler;
- the boiler is full when water starts to flow through the vent. At this moment, close the tap from the consumer and the aerator;
- check possible water losses along all hydraulic routes and connections.
Attention!
The boiler is filled with cold water only after the coil is connected to the CH circuit and charged with a pressure of 1.5-
2 bar.
Attention! If the water hardness exceeds the value of 15 °TH (where 1 ° TH = French degree = 10 mg CaCo3/l) it is
mandatory to install a softener in order to reduce limescale deposits inside the boiler, to maintain the efficiency of the
electrical resistance and prevent the occurrence corrosion inside the boiler.
ATTENTION! Filling the installation with antifreeze agents (antifreeze) is not covered by the warranty.
ATTENTION! Domestic cold water must comply with the requirements regarding the quality of drinking water:
- The pH of the water must fall within the following limits: 7 <pH <8.5. This value of the pH in the installation must also be
correlated with the correct ventilation. The presence of oxygen in the heating system is very harmful and can lead to
corrosion.
- Water hardness must fall within the limits: 5°F <TH <15°F (5°F (French degrees), the equivalent of 50mgCaCO3 or an
equivalent amount of other Ca and Mg salts);
- The maximum allowed free residual chlorine content of 0.5 mg/l and the maximum allowed chloride level of 250ppm.
- also for granting the commercial guarantee, water supply pressures higher than 5 bar are not allowed;
ATTENTION!
Hot water with a temperature over 48°C at the taps can immediately cause serious burns or scalds!
Vulnerable people (children, the elderly and people with disabilities) are the most exposed to the risk of burns.
The manufacturer cannot be held responsible, if the preventive measures were not taken during the installation and operation
of the product!
3.2.4 Emptying the boiler
To completely empty the boiler, observe the following steps:
- Disconnect the boiler from the electrical supply;
- Turn off the boiler cold water inlet tap;
- With the 22mm wrench open the boiler total emptying plug;
- We recommend to connect a hose to drain the water into the sewage;
- Turn on the hot water tap(sink or tub) sand allow water to drain until complete emptying of the boiler. If you want
partial emptying of the boiler (to the level of the cold water inlet connection) observe the following steps:
- Disconnect the boiler from the electrical supply;
- Turn off the boiler cold water inlet tap;
- Turn on the hot water tap(sink or tub) sand allow water to drain until the boiler is empty.

rev. 02.04.2020 © KÖBER SRL VADURI BRANCH
KÖBER S.R.L.
VADURI BRANCH
INSTALLATION AND USE MANUAL
NAME OF APPARATUS / EQUIPMENT
DOMESTIC HOT WATER STORAGE TANK
Edition: 1
Revision: 3
Date: 27/07/2022
Form code F-POV-05-07
Page: 14 of 20
3.2.5 Electrical diagram
Where:
TR1 0-60°C – Capillary thermostat 0-60°C
TR2 0-60°C - Capillary thermostat 0-60°C
RE 2kW – Electrical heater 2 kW
TR 20-80°C – Thermostat with electrical heater 20-80°C
V3C – Three way valve
"CA" – Infeed connector
"CE" – Auxiliary equipment connector
ATTENTION!
Bench marks: the 3 way valve or the pump are not ensured by the manufacturer. They must be ordered separately
by the beneficiary.
The length and type of the connection cable of the 3 way valve/ pump are established depending on the technical conditions
of the beneficiary.
3.2.5.1 Connecting the boiler to the power supply for the functioning with coil
The boiler will be connected to the single-phased 230V - 50Hz grid, directly in the electrical panel / 16A outlet,
through a rapid 10A fuse, taking into account color significance as follows: Brown (L1) = phase, Blue (N) = null,
Green and Yellow (GND) = earthing.
It is not allowed to mount the boiler without an earthing connection.
The connection cable for the electrical supply must be of type MYYM 3x1,5mm2. The cable will connect to the infeed
connector
on the top cover of the boiler , observing color significance and the connector indications.
3.2.5.2 Connecting the boiler to the power supply for the functioning with coil and electrical heater
The boiler will be connected to the single-phased 230V - 50Hz grid, directly in the electrical panel / 16A outlet,
through a rapid 10A fuse, taking into account color significance as follows: Brown (L1) = phase, Blue (N) = null,
Green and Yellow (GND) = earthing.
It is not allowed to mount the boiler without an earthing connection.
The connection cable for the electrical supply must be of type MYYM 3x1,5mm2. The cable will connect to the infeed
connector
on the top cover of the boiler, observing color significance and the connector indications.
The deflecting valve/ recirculation pump connection cables must have a minimum cross section of 1mm2. The cables will be
connected to the auxiliary equipment connector marked with the sign “3way valve/ pump” on the top cover of the boiler
observing color significance and the connector indications.

rev. 02.04.2020 © KÖBER SRL VADURI BRANCH
KÖBER S.R.L.
VADURI BRANCH
INSTALLATION AND USE MANUAL
NAME OF APPARATUS / EQUIPMENT
DOMESTIC HOT WATER STORAGE TANK
Edition: 1
Revision: 3
Date: 27/07/2022
Form code F-POV-05-07
Page: 15 of 20
3.2.5.3 Connecting the boiler to the power supply for the functioning with electrical heater
The boiler will be connected to the single-phased 230V - 50Hz grid, directly in the electrical panel / 16A outlet,
through a rapid 10A fuse, taking into account color significance as follows: Brown (L1) = phase, Blue (N) = null,
Green and Yellow (GND) = earthing.
It is not allowed to mount the boiler without an earthing connection.
The connection cable for the electrical supply must be of type MYYM 3x1,5mm2. The cable will connect to the infeed
connector
on the top cover of the boiler, observing color significance and the connector indications.
3.2.5.4 Connecting the boiler with a MOTAN gas boiler Type: C38GC35-CH1, C38GC 35-CH2 – coil operation
Attention!
To use the boiler BP120L_V1 with built-in mixing valve, the service parameters of the boiler must be set as follows:
SP:21=13, SP:22=15 (see chapter service parameters in the technical manual of the boiler)
Operation in domestic hot water mode through the boiler
The gas boiler can work in this mode for both seasons ("Winter" and "Summer"). The request for heating in DHW mode through
the boiler has priority over the request for heating in heating mode. Parameter SP:02 dictates the operation of the gas boiler
with an external boiler, as follows:
• parameter SP:02 = 0 - The gas boiler will only work in heating mode when this configuration is set.
• parameter SP:02 = 1 - The gas boiler works in heating and DHW mode.
The activation of the control element for switching from heating mode to DHW mode is done through parameter SP:04 as
follows:
• parameter SP:04 = 0 - the gas boiler will work only on heating, no control element is activated.
• parameter SP:04 = 1 - activates the temperature sensor on the boiler as a control element for switching from heating mode
to DHW mode.
The user sets the temperature of the water stored in the boiler. - The gas boiler will start when the value of the water
temperature sensed by the sensor on the boiler is lower than the value set by the user on DHW + the given value of the service
parameter (SP:21) + 6°C. – The gas boiler stops when the value of the water temperature sensed by the sensor on the boiler is
higher than the value set by the user on DHW + the value given by the service parameter (SP:22) + 7°C. After reaching the
value set by the user, the central pump continues to work for a period of time (indicated by parameter SP:17). In boiler
operation mode, the gas boiler will provide heating agent through the default coil at a temperature of 70°C.
In the case of a continuous operation of the gas boiler at the minimum capacity, in DHW mode, the water temperature of the
boiler can exceed the value of 70°C. Therefore, for safety reasons, the burner is turned off (the gas valve will be closed) when
the water temperature in the boiler reaches 73°C (fixed value); the circulation pump will continue to work. A new ignition will
take place after the water temperature drops below 70°C.
The ANTILEGIONELLA function is activated automatically. This means that the water temperature in the boiler is maintained at
a high temperature for one hour, once every week
- The procedure for connecting the external boiler sensor to the boiler is described in the technical manual of the boiler.
The sensor on the external boiler must be of the following type:
Resistance at 25°C (R25): 10kΩ ± 5%
Constant β25/100: 3988k ± 1%
4USE INSTRUCTIONS
4.1 Boiler startup
Boiler startup is done by connecting it to the power supply.
Before you turn on the boiler please check:
- All the hydraulic connections and ensure there are no leaks in the installation;
- If the boiler is full with water in order to avoid damage to the electrical heater;
- Pressure in the installation is within optimal parameters.
Figure 12

rev. 02.04.2020 © KÖBER SRL VADURI BRANCH
KÖBER S.R.L.
VADURI BRANCH
INSTALLATION AND USE MANUAL
NAME OF APPARATUS / EQUIPMENT
DOMESTIC HOT WATER STORAGE TANK
Edition: 1
Revision: 3
Date: 27/07/2022
Form code F-POV-05-07
Page: 16 of 20
ATTENTION!
It is forbidden to startup the boiler half full in order to avoid damage to the electrical heater!
The boiler is equipped with two adjusting thermostats that automatically control the hot water temperature and
allow the optimization of the energy consumption depending on necessities.
Please set the thermostat at the desired value.
The thermostat is adjusted between 0-600C.
ATTENTION!
Maximum temperature of the hot water is 60 0C. do not spray water directly on the body, at this temperature there
is always the risk of burning!
ATTENTION!
Hot water with a temperature over 48°C at the taps can immediately cause serious burns or scalds!
Vulnerable people (children, the elderly and people with disabilities) are the most exposed to the risk of burns.
The manufacturer cannot be held responsible, if the preventive measures were not taken during the installation and operation
of the product!
If the boiler functions with electrical heater, the boiler automation panel contains a LED which remains lit while the electrical
heater heats the water in the boiler. Temperature adjustment is done by means of the electrical heater command
thermostat fig. 12.
In order to prevent the development of the “legionella” bacteria, it is recommended to avoid low temperature of the water
in the boiler. For this purpose, the following preventive measures are necessary:
- Inside the boiler maintain hot water at a temperature of minimum 50°C;
- in case the boiler is not used for an extended period, adjust the temperature for the maximum for at least 24 hours.
If the boiler functions only with heating station/ solar panel, the thermostat of the electrical heater remains in “zero” position
and temperature adjustment will be done through the V3C/pump thermostat.
4.2 Indications regarding boiler decommissioning
ATTENTION!
During winter, if the product is not used for a longer period of time, water must be evacuated in order to avoid the
freezing of the boiler.
5MAINTENANCE
During the warranty period, annual boiler maintenance by an AUTHORIZED specialist is mandatory. The annual maintenance is
done at the expense of the end user. Inform the user about this aspect.
5.1 Boiler cleaning
For all types of interventions on the boiler, the following steps need to be observed:
- Disconnect the boiler from the main power supply;
- Empty the boiler – turn off the cold water inlet tap and turn on the emptying tap
– see figure 5;
- Disconnect the boiler from the station heating the thermal agent, if necessary;
- Remove the plug of the electrical heater mounting connection or the electrical
heater;
- Wash the interior of the vessel with a high pressure pump;
- Use a chemical cleaning agent, if necessary;
- Dispose of the dirty water using the boiler emptying connection figure13 –
complete emptying connection.
5.2 Annual replacement of the magnesium anode
Attention!
During the warranty period, annual maintenance and replacement of the magnesium anode is mandatory. The
annual maintenance and replacement of the magnesium anode is done at the end user's expense.
Failure to carry out the annual maintenance and replacement of the magnesium anode leads to the loss of the commercial
warranty.
Failure to submit intervention reports for the annual replacement of the magnesium anode entails the loss of the commercial
warranty.
-Defects that cannot be attributed to the manufacturer, caused by defects in the installations to which the equipment is
connected (water supply installation, electrical supply installation), such as:
-- failure of the components as a result of their clogging or corrosion, due to the inadequate quality of the water used: the
use of water with a high degree of hardness; with a PH or a level of chlorides (free residual chlorine and total chlorides)
that do not fall within the specified limits; or with chemical substances that cause or favor the occurrence of corrosion
phenomena;
-- defects caused by supplying the equipment with rain water, well water or water that is very aggressive and does not
comply with the norms in force and that causes or favors the occurrence of corrosion phenomena;
-- defects caused by the rapid wear of the magnesium anode (in a period of time even shorter than the annual term of
preventive intervention);
-- defects caused by not replacing the magnesium anode in time (before its total consumption, which can occur in a
period of time even shorter than the annual term of preventive intervention). By consuming it completely, the cathodic
Figure 13

rev. 02.04.2020 © KÖBER SRL VADURI BRANCH
KÖBER S.R.L.
VADURI BRANCH
INSTALLATION AND USE MANUAL
NAME OF APPARATUS / EQUIPMENT
DOMESTIC HOT WATER STORAGE TANK
Edition: 1
Revision: 3
Date: 27/07/2022
Form code F-POV-05-07
Page: 17 of 20
anti-corrosion protection is canceled and implicitly the corrosion phenomena of the stainless steel body of the boiler are
favored (especially in the area of the welding cords);
The magnesium anode must be replaced ONLY by AUTHORIZED personnel and approved by the manufacturer.
The magnesium anode gets consumed. You must check the diameter of the magnesium anode annually. Observe the
following
steps – see figure 14:
- disconnect the boiler from the electricity;
- close the cold water supply tap;
- open the hot water tap;
- activate the aerator on the upper side of the boiler;
- empty the boiler up to the level of the hot water outlet;
- remove the screws pos. 1 with a cross screwdriver;
- remove the ring pos. 2;
- remove the boiler cover, item 3;
- remove the sealing gasket of the upper cover pos. 4;
- dismantle the fixing connection of the anode pos. 5 with an S=42 key together
with the aerator;
- loosen the lock nut - pos. 7;
- disassemble the anode (8) and replace it with a new one (its initial diameter is
22mm);
- tighten the lock nut;
- screw in place the fixing connection of the anode;
- fill the boiler with water.
After performing the above operations, put the boiler back into operation, following the commissioning instructions.
ATTENTION!
The O-ring pos. 6 must be replaced.
5.3 Checking heater
Even in the case of using the magnesium anode, deposits may appear on the electrical resistance. It is recommended that
this be checked annually, together with the annual replacement of the anode. Perform the following steps - see figure 15:
- Disconnect the boiler from the power supply;
- Turn off the cold water inlet tap;
- Turn on the hot water tap;
- Activate the airier;
- Empty the boiler;
- Dismantle the screws pos.4 with a cross screwdriver;
- Remove the protective cover;
- Dismantle the heater – pos.2 with a S=55mm wrench;
- Check its state and clean it if required;
- Mount the heater back into position;
After completing the steps above, boiler is restarted observing the
commissioning indications.
ATTENTION!
It is necessary to replace the O-ring - pos. 1.
5.4 Checking the hydraulic safety group
The functioning of the hydraulic safety group is very important in order to avoid
internal overpressure inside the boiler body.
The hydraulic safety group is checked annually. During checking clean and remove the calcareous deposits which may
appear.
External cleaning
To clean the outer part of the boiler use neuter soap solutions in order to prevent the use of abrasive products or products
based on organic solvents (alcohol, gas, etc.).
5.5 External cleaning
To clean the outer coating, use neutral soap solutions and avoid the use of abrasive or organic solvents (alcohol, gasoline,
etc).
6DISPOSING OF OLD ELECTRICAL AND ELECTRONIC APPLIANCES (DIRECTIVE 2002/96/EC –DEEE)
This symbol indicates the fact that this product must not be disposed of as domestic waste. It must
be taken to a center for recycling old electrical and electronic appliances. Correct disposal of
the products avoid possible damages to the environment and health. Recycling of materials
allows the conservation of natural resources.
For further information on the recycling of this product please contact your local domestic waste collector.
Figure 14
Figure15

rev. 02.04.2020 © KÖBER SRL VADURI BRANCH
KÖBER S.R.L.
VADURI BRANCH
INSTALLATION AND USE MANUAL
NAME OF APPARATUS / EQUIPMENT
DOMESTIC HOT WATER STORAGE TANK
Edition: 1
Revision: 3
Date: 27/07/2022
Form code F-POV-05-07
Page: 18 of 20
7SPARE PARTS
According to figure 16 and table 8.
Figura 16

rev. 02.04.2020 © KÖBER SRL VADURI BRANCH
KÖBER S.R.L.
VADURI BRANCH
INSTALLATION AND USE MANUAL
NAME OF APPARATUS / EQUIPMENT
DOMESTIC HOT WATER STORAGE TANK
Edition: 1
Revision: 3
Date: 27/07/2022
Form code F-POV-05-07
Page: 19 of 20
Table 8
Poz. Name SAP code
1 Adjustable thermostat 0-60°C PM002310
2 ON/OFF button PM500167
3 Indicator lamp PM500166
4 Top cover ring SIC-BP120
5
Screw M4x8 ISO 7045
PM500355
6
Connector V3C
PM001966
7
Power supply connector 220V
PM001964
8
Top plastic cover
S21200
9
Manual airier
C00270
10
Top cover tightening gasket
PM500665
11
O-ring 23x2 NBR
PM500210
12
Hexagonal nut M8 ISO 4032 stainless steel
PM500664
13
Magnesium anode D22x155
PM002066
14
Lateral fixing boiler support
SSB-BP120
15
Flat washer A10 ISO 7089
PM500699
16
Screw M10x20 ISO 4018
PM500698
17
O-ring 12x3 NBR 70
PM500369
18
Thermometer 0-120°C
PM001958
19
Temperature sensor immersed jacket
STST-BP120
20
Gasket AFM 23.5x17x2
PM500254
21
Temperature sensor preset blocking
PM500700
22
Exterior jacket
SFB-BP120
23
O-ring 37.7x2.65
PM001991
24
Electrical heater2000W
PM500653
25
Electrical heater thermostat
PM001962
26
Electrical heater protective cover
SCPR-BP120
27 Gasket AFM 14x9x2 PM500250
28 Interior screw plug G3/4'' S20929
29 Adjustable leg M10x95 PM003208
30 Hexagonal nut M10 PM500703
31 Flat washer A10 ISO 7089 PM500699
32 Mixing valve kit (include mixing valve) E12228
33 Mixing valve only PM302519

rev. 02.04.2020 © KÖBER SRL VADURI BRANCH
KÖBER S.R.L.
VADURI BRANCH
INSTALLATION AND USE MANUAL
NAME OF APPARATUS / EQUIPMENT
DOMESTIC HOT WATER STORAGE TANK
Edition: 1
Revision: 3
Date: 27/07/2022
Form code F-POV-05-07
Page: 20 of 20
8RECORDS OF INTERVENTIONS
Date Intervention details
(Defect observed, Replaced spare parts)
Intervention type Signature
authorized
personnel
Maintenance Service
1
2
3
4
5