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1.3.

Control panel              

Display

1.

LCD screen

The control panel has 8 keys, 1 screen and 2 buttons.

1

2

3

4

5

6

7

8

9

10

11

12

13

1

2

3

4

5

6
7

8

9

10

11

12

13

14

15

16

17

2

Fig.1

S/N

Description

Indicator for heating programming in winter mode.
Indicator for the program's intervals. Divide a day (24 hours) in 48 time intervals, and the 
indicator will be started simultaneously with the chronometer function indicator.

Time intervals for the heating programming. By setting a time interval, it is possible to 
tart and stop some indicators for the respective individual time interval. If the indicators 
start, there is a heating request. Otherwise, no heating request for the respective interval 

Current time indicator.

Outside temperature indicator. After installing the probe for outside temperature and 
performing the configuration in the main panel, the indicator displays the probe's 
temperature readings of the outside temperature.
Domestic hot water (DHW) indicator. It is permanently displayed in DHW tank configuration, 
summer or winter, and blinks while setting a DHW target temperature.
Inside temperature indicator. When the OT thermostat is connected, it displays the OT 
thermostat's readings to render the room's temperature; the thermostat could also render 
the temperature detected in the room temperature probe mounted in the system.

Domestic hot water (DHW)operating indicator. It blinks when the heating unit operates in 
the DHW mode or when the target temperature for domestic hot water is set.

Heating functioning indicator. It blinks during heating or when the adjusted heating temperature is set.
Heating indicator. Displayed in “winter” mode.
Display of the menu, faults and temperature. When the target heating temperature is set, it blinks 
to indicate the target heating temperature, and when the water target temperature is set, it blinks to 
indicate the target temperature of the domestic hot water. In the status without settings and without 
faults, it indicates the current temperature of the domestic hot water in the summer mode, or in the 
domestic hot water modes during the winter. In the winter mode, it indicates the current temperature 
of the domestic hot water (DHW), and during the heating of the DHW tank, it indicates the 
temperature inside the tank.

Power indicator. It shows the current thermal power, totalizing 3 exchanges.

Circulating pump operation indicator. It is started when the pump operates.

EN

is recorded.

Summary of Contents for LEB 12.0-TS

Page 1: ...12 0 15 0 18 0 21 0 24 0 28 0 WALL MOUNTED ELECTRIC BOILER BEDIENUNGS UND INSTALLATIONSHANDBUCH WANDMONTIERTES ELEKTROHEIZAGGREGAT USER AND INSTALLATION MANUAL Code 433606850 ...

Page 2: ...in order to make sure that all the protection and operating devices work well for their intended purpose 3 Make sure that the heating unit is commissioned by the supplier or by the supplier s authorized personnel 4 For the heating unit commissioning as well as in the event of failures please contact the specialized personnel as indicated by the supplier Any intervention by unauthorized personnel m...

Page 3: ... connection 10 Connection of the temperature controller for the rooms of the 3 way valve and of the NTC domestic hot water DHW tank temperature 10 3 Service and repairs 12 3 1 Commissioning 12 Before starting the heating unit 12 Starting the heating unit 12 Operation check 12 Shut down 12 3 2 Maintenance 12 3 3 Repairs 13 Heating unit seasonal checks 13 3 4 Faults remedy 13 Diagnosis 13 4 Technica...

Page 4: ...nce with the requirements included in this manual and in the manual s annexes It is very important to ensure the proper operation of the heating unit avoiding unauthorized access of children of persons under the influence of drugs and alcohol of all persons without discernment etc The supplier provides the products in compliance with the corresponding regulations and standards as well as the produ...

Page 5: ...When the OT thermostat is connected it displays the OT thermostat s readings to render the room s temperature the thermostat could also render the temperature detected in the room temperature probe mounted in the system Domestic hot water DHW operating indicator It blinks when the heating unit operates in the DHW mode or when the target temperature for domestic hot water is set Heating functioning...

Page 6: ...ure of up to 60ºC for the heating water allowed variation interval is 30 60ºC After heating the temperature value may vary by 8ºC When the floor heating mode is deactivated you can set a temperature of up to 80ºC for the hot water allowed variation interval is 30 80ºC D Set key The key functions in the setting menu For more details please see the next chapter E OK key Shortly press the key to imme...

Page 7: ... target temperature At that moment the heating indicator and the heating functioning indicator flash intermittently To exit the setting status press the reset key On Off key 1 5 Faults remedy The heating unit operates improperly when the following fault codes are displayed intermittently on the LCD screen A means faults resulted from blockages and requires manual intervention F represents automati...

Page 8: ...ng The resistances are decoupled in the case of temperatures 30 ºC and the pump will keep operating for a short period of time During the unit s frost protection function activation the screen displays the temperature if the unit is in the OFF mode E Outdoor temperature compensation Follow the operation 1 7 and enter P07 menu choose a curve by the heated rotary knob When set the curve it shows C C...

Page 9: ...oor temperature probe it will show the fault code F13 every 10S Under this situation the system will not operate according to the pre set outdoor temperature compensation curve and the heated water target temperature will be acquiesced in 60 C Under this situation user can adjust the water target temperature by means of adjusting the rotary knob 6 P01 To set the water pump operation period when th...

Page 10: ...he setting button this operation will cancel all the fault records RES means reset menu If quickly clicking push the setting button this operation can recover all setting items in tS menu to acquiescent data Turn the heating button to select the desired parameter and access it by shortly pressing the set key The parameter s value change is performed by means of the heating potentiometer After the ...

Page 11: ... other objects keeping minimum distances as indicated in fig 4 The heating unit s mounting should be performed solely by specialized and authorized technical personnel The guarantee certificate for the electric heating unit becomes valid after the unit s commissioning by specialized personnel The unit s temperature adjustments may be done by unqualified persons Such persons may operate the control...

Page 12: ...tric heating unit to the wall by means of fixing screws according to Fig 6 Suspend the unit s body and its auxiliary components on tightly fixed screws The unit s housing is fixed with screws to the posterior wall and can be disassembled Before mounting establish a proper place to perform repairs to the unit In the case in which the unit is connected to an open system provide a minimum pressure of...

Page 13: ...additive or an anti frost inhibitor However the provider of such agents should guarantee that such products do not impair the heat exchanger the auxiliary components and the heating devices of the electric heating unit Do not use heat carriers additives or anti frost inhibitors which are not indicated as compatible with the heating devices and with the electric heating unit Check and clean the fil...

Page 14: ...ral devices The supplier undertakes no responsibility for complaints resulted from the unit s improper assembly and mounting 11 You may buy simple and complex control components such as the inside programmable daily or weekly controller from the LEB TS electric heating unit s supplier or from its partners To ensure the proper operation of the LEB TS electric heating unit it is compulsory to instal...

Page 15: ...g of the electric heating unit the circuit board remains on With the heating function inactive the message OFF appears on the LCD screen However the frost protection function remains active When the electric heating system is disconnected from the power supply system the frost protection function is not active To avoid frost caused losses following the unit s long disconnection from the power supp...

Page 16: ...m this check Heating temperature limiter faulted Check if the heating temperature limiter is correctly mounted and actuated There is no circulation in the system Check the circulating pump to see if there is circulation in the heating system There is air in the system The water in the heating system is not recirculated There is air in the heating system Disconnected temperature sensor A08 The heat...

Page 17: ...4 TECHNICAL CHARACTERISTICS AND PARAMETERS 4 1 Dimensions and joints 14 EN ...

Page 18: ...4 2 Heating unit s general drawing and main components 15 EN ...

Page 19: ...16 4 3 Hydraulic scheme EN ...

Page 20: ...17 4 4 Circulating pump diagram Fig 8 Circulating pump speed Load loss in the heating unit Pumping height Flow EN ...

Page 21: ...urrent 28kW max 44 12 15 18 21 24 28 12 15 18 21 24 4x3kW 4x3 75kW 4x4 5kW 4x5 25kW 4x6kW 18 2 22 8 27 3 31 9 36 4 6 6 4 4 4 4 2 5 2 5 2 5 2 5 Net weight no water GW 39 5 43 5 28 4x7kW 44 6 6 18 4 5 Technical parameters EN ...

Page 22: ...board wiring diagram Pump COM Tank CH AC contactor Power AC220V PE earthing Control Panel Interface water pressure switch indoor temp switch outdoor NTC indoor NTC CH NTC Tank NTC Pressure sensor over heat switch EN ...

Page 23: ...20 4 7 Boiler wiring diagram U 2kW 2kW 2kW 2kW 2kW 2kW 2kW 2kW 2kW 2kW 2kW 2kW V W N EN ...

Page 24: ...y for possible inaccuracies included in this manual if they are not printing or transcription errors We reserve the right to modify our products as needed or useful without any prejudice to their essential characteristics District 6 Bucharest ...

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