Ferroli LEB 28.0-TS, LEB 24.0-TS, LEB 18.0-TS, LEB 21.0-TS, LEB 15.0-TS User And Installation Manual

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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

Dear Customer,

Thank you for choosing the wall-mounted electric boiler (heating unit) intended to be used in the heating system and designed to provide comfort.

The LEB TS electric heating unit is manufactured with state-of-the-art technology to guarantee reliability and satisfy your needs. Please follow the installation and maintenance basic requirements. So, please read carefully this manual before using the unit and follow its instructions.

We hope that the LEB TS electric heating unit will create an environment in which you will enjoy thermal comfort.

Please observe the following warnings and recommendations:

1. Install and maintain the heating unit and its auxiliary devices according to the indications that correspond to this model, following all regulations and standards in force and the supplier's technical specifications.

2. Mount the heating unit in the specified conditions 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 may lead to the heating unit breakdown (and possible failures of the auxiliary devices).

5. Check the accessories integrity.

6. Check the delivered models to make sure that they are what you ordered.

7. In case you have any doubts as to the safe operation of the heating unit, please read carefully this manual and follow its instructions.

8. Please do not remove or destroy the stickers and the identification plates attached to the heating unit.

9. The heating unit complies with the following standards: EN 60335-2-35: 2002, EN 60335-1: 2002 + A1:2004+A2:2006+A13:2008.

10.At the end of the service life, please recycle the heating unit and its accessories in compliance with the legislation in force.

Content

1. User instructions.......................................................................................1

1.1. Introduction ......................................................................................1

1.2. Safety of goods and persons ...........................................................1

1.3. Control panel ...................................................................................2

1.4. Keys functions .................................................................................3

1.5. Faults remedy ..................................................................................4

1.6. Functions..........................................................................................4

1.7. Menu.................................................................................................6

1.8. Filling of the installation ...................................................................7

2. Mounting ..................................................................................................8

2.1. Operating conditions and mounting location ....................................8

2.2. Mounting the heating unit ................................................................9

2.3. Water pipes connection ...................................................................10

A. Water pipes mounting .........................................................................10

B. Water quality in the hydraulic system .................................................10

C. Frost protection system, heat carrier, additive and anti-frost inhibitor 10

2.4. Performance of the electric connections ..........................................10

Power supply cable 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. Technical characteristics and parameters.................................................14

4.1. Dimensions and connections ...........................................................14

4.2. Heating unit general drawing and main components........................15

4.3. Hydraulic scheme ............................................................................16

4.4. Circulating pump diagram ................................................................17

4.5. Technical parameters........................................................................18

Recommended sections for circuit breakers and conductors..................18

4.6. .......................................................19Controller board wiring diagram

4.7. ............................. ...............................20Boiler wiring diagram ............

1. USER INSTRUCTIONS

1.1. Introduction

In order to follow the development trends in the field, Ferroli decided to launch the LEB TS series direct heating electric units with capacities of 12kW, 15kW, 18kW,

21kW,24kW and 28kW This is a highly efficient heating boiler, which means that the entire operation system is designed independently of the heating system. The heating unit's use with its intended applications is easy, through the LCD screen

1.2. Safety of goods and persons

Make sure and check if the heating unit operates according to its intended purpose by implementing the ISO9001 quality management system. Use the heating unit in accordance 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 products from the series as per the ISO9001 quality management system. After you gained access to the contractual party's network, to which you agreed, make sure you remain informed with regard to the products improvements (for instance, those concerning mounting, commissioning, and when you use the heating unit, those concerning the unit's adjustment and control, with a view to local conditions, during and after the guarantee period).

control panel.

1.3. Control panel Display

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

12 13

1 2 3

6 7

12 13 14 15 16 17

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.

is recorded.

2. Background light

The background light is off when the heating unit is off, and the background light is on when the heating unit is on. The background light is automatically put off when no key is pressed for 20 minutes, and is put on when any key is pressed.

1.4. Keys functions

Heating

programming

Water tank

Floor heating

Setting

Enter

Winter/summer mode selection

Reset

On/Off

Radiators

temperature setting

Domestic hot water temperature setting

A: Key for the activation of the heating program: Press the key to activate/deactivate the heating program. Keep the key pressed for 3 seconds

to activate the setting of hour and heating intervals. In the summer mode, the key has no function.

B: Domestic hot water (DHW) tank key: To connect the DHW tank to the electric heating unit, press the DHW key to activate or

deactivate the DHW tank mode. C: Floor heating key: Press the floor heating key to switch between radiator and floor heating when the electric

heating unit is in the heating mode. When the floor heating mode is activated, you can set a temperature 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 immediately exit the setting menu, if you are in the setting menu, and

save the most recently performed changes. F: Key to select the winter and the summer modes: Press the key to select the winter and the summer modes, to switch between the electric

heating unit's winter and summer modes. G: Reset key: Shortly press the key to erase the fault status. In the case of faultless status and setting status,

shortly press the key to exit the setting status. Keep the key pressed for 10 seconds to activate the setting menu.

Winter mode indicator. It is started when the boiler is set in the winter mode.

Summer mode indicator. It is started when the boiler is set in the summer mode.

Floor heating indicator. It is started when the floor heating mode is selected. Usually it is off.

Dometic hot water (DHW) tank connection indicator. It is on when the system uses a DHW tank.

Fig.2

Press the On/Off key to activate the switch between the electric heating unit's start and stop. In the status without settings and faults, press the key once to go to the Off mode and end all requests, and the LCD screen will show the message “Stopped”. Only the water pump's anti-blocking device and the anti-blocking device of the anti-freeze protection will continue to function. While in the “Stopped” mode, for the protection against frost of the electric heating unit or of the domestic hot water (DHW) tank, the LCD screen will show the message “FD”, indicating the fact that the anti-freeze protection device is in operation. To return to the standby mode, press again the On/Off key. I: Heating button: The button can be freely turned and can be used to set the temperature of the heating water and of other parameters. In the status without settings and faults, turn the button to change the heating water target temperature. At that moment, the indicator for heating and the indicator for heating functioning could blink. To exit the setting status, press the reset key. J: Domestic hot water button: The button can be turned freely and can be used to set the domestic hot water temperature and other parameters. In the status without settings and faults, turn the button to change the domestic hot water 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 automatically remedied faults. The fault codes disappear automatically after the remedy of the faults.

A03

A06

A08

F10

F11

F14

F37

F41

Electric leakages

Temperature limiter (decoupled mechanic temperature limiter)

Heating sensor or domestic hot water sensor disconnected from the flow pipe (normally, after a 10-minute heating order, the temperature increases on the flow pipe sensor and on the domestic hot water sensor do not exceed 3ºC. No temperatures above 40ºC are detected).

Faulted heating temperature sensor (faulted NTC sensor, shortcircuited cables, unconnected cables, or interrupted cables).

Sensor for temperature inside faulted heating unit (faulted NTC sensor, short-circuited cables, unconnected cables, or interrupted cables).

Faulty temperature sensor for the water inside the domestic hot water (DHW) tank (faulted NTC sensor, short-circuited cables, unconnected cables, or interrupted cables).

The water pressure inside the installation is not correct (pressure too low, water pressure switch not connected or defective).

System out of operation (in case of a temperature gradient higher than the reference value). Make sure that there is circulation in the heat exchanger; check the open position of the valves, check the Y filter and the circulating pump operation). In such a case, the fault can be

automatically remedied after the temperature decreases below 5ºC.

1.6. Functions

A: Hour and heating program intervals setting: During normal operation, keep the heating activation program key pressed for 3 seconds in order to activate the hour setting, starting with the setting of the hour. Turn the heating button to change the parameters. Shortly press the set key once to store the hour setting data and continue with the minutes setting. Turn the heating button to change the parameters. Shortly press the set key once to store the minutes setting data. If the heating unit is in the summer mode, you can activate the setting of the heating program intervals. Turn the heating button through the points of the heating program intervals. Shortly press once the set key to activate/deactivate the selected point of the heating program interval. After finishing the setting, press the OK key to exit and store the performed changes. If you do not want to store the performed changes, shortly press the reset key to exit the menu.

Fault code

Fault description

Type

A01

Temperature in the heating unit above 90ºC

Blockage

Reset after fault remedy

B: Domestic hot water (DHW) tank key use: The DHW tank key can be used if the tank is connected (P05 from the menu is set in the Stopped mode). If the DHW tank is not allocated for other purposes, the key has no function. C: Temperature setting and control:

1. Heating temperature set interval: 30~80ºC. Temperature difference between the flow pipe and the return pipe: 5~20ºC.

2. Temperature set interval inside the DHW tank 30~60ºC. Temperature difference between the flow pipe and the return pipe: 5~20ºC.

3. Heating temperature to start: Tw<Ts-ΔT * Note: Tw=working temperature; Ts=set temperature; ΔT=temperature difference between the flow pipe and the return pipe. D: Frost protection function:

Class I frost protection: for temperatures ≤8ºC, the water pump keeps operating until heating temperature reaches ≥10 ºC, and in such conditions the frost protection function becomes active and the FD message is displayed on

the screen, while the anti-freeze function is active, when the unit is in the OFF mode. Class II frost protection: for temperatures ≤5ºC, the water pump is activated and the resistances coupled to start heating. 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--, C01-C10) in the first digit. C--means close the outdoor temperature compensation function. The boiler will operate automatically according to the target temperature which set by the users with the rotary knob.

C01-C10 means to adjust the target water temperature by the means of curve 1 to 10. Please refer to Picture 3 for the compensation curve

Follow the operation 1.7 and enter to P06 menu, adjust the offset by the domestic heated rotary knob. When set the offset, it shows O in the first digit (setting range is O30-O50). O30-O50 means to operate with relative offset data base on the current curve.

补偿曲线（偏移＝0）

Outdoor temperature

8910

采暖目标温度

Outdoor temperature Outdoor temperature

Compensation curve

Heated water target temperature

Compensation curve Compensation curve

Heated water target temperature

+ 16 hidden pages

Ferroli LEB 28.0-TS, LEB 24.0-TS, LEB 18.0-TS, LEB 21.0-TS, LEB 15.0-TS User And Installation Manual

Specifications and Main Features

Frequently Asked Questions

User Manual