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KOSPEL EKCO.LN3 Electric Central Heating Flow Boiler Manual

KOSPEL EKCO.LN3 Electric Central Heating Flow Boiler Manual Image

KOSPEL EKCO.LN3 Electric Central Heating Flow Boiler

Safety instructions

  • Read and strictly follow the installation and operating instructions to ensure long life and reliable boiler operation.
  • An efficient electrical installation has been completed in accordance with the binding norms of electric installation.
  • Central heating system equipped with an appropriate expansion vessel completed in accordance with the binding norm of hydraulic installation.
  • Rinse the heating installation thoroughly before installing the boiler.
  • Do not install any barrier fittings (e.g. valves) on the outlet of the safety valve.
  • The boiler must be installed on the flat surface.
  • The boiler must not be installed in a humid place, in a place exposed to the danger of explosion, or in which the temperature may drop below 0°C
  • Boiler installation and all electrical and hydraulic work must be performed by a qualified professional installer in accordance with the manufacturer’s instructions.
  • All installation work must be performed when the power and water supply are turned off.
  • Electric installation should be equipped with residual current protective devices and other solutions which will ensure disconnecting the heater from the source of power (intervals between all their poles should not be less than 3 mm).
  • The boiler is preset by the manufacturer to work with the central heating system. Change the factory settings in the advanced settings to shift to the boiler’s cooperation with DHW Cylinder.
  • The electronically controlled boiler is an electrical surge sensitive device, therefore the electrical installation must contain surge protection devices.
  • Do not drain the water from the central heating system after the heating season.
  • Leave the controller in standby mode and do not cut off the power supply between the heating seasons.

Installation notes

EKCO.LN3 boilers are equipped with an expansion vessel (capacity: 5l, pressure: 1.5bar). The expansion vessel is sufficient for following capacities of the heating system at given temperatures of the medium and central heating system pressure.

The temperature of the heating medium

(feed and return)

The capacity of the central heating system Pressure in central heating system
[°C] [l] [bar]
85/70 56 1,5
70/55 80
55/45 127
50/40 153
45/35 188

Shall the capacity of the wet central heating installation be larger, an extra expansion vessel should be installed on it as applicable in accordance with the binding norm.

Boiler connection to the central heating system

  • PI – manometer
  • ZK – cut-off valve
  • RW – expansion pipe
  • NW – built-in expansion vessel
  • NW1 – expansion vessel
  • ZT – thermostatic valve
  • ZP – passage valve
  • F – filter
  • G – radiator
  • ZS – drain valve
  • Z3D – three-way valve
  • ZAS – DHW Cylinder
  • TWV – three-way valve
  • RT – alternative room temperature sensor
  • Tcyl – DHW cylinder temperature sensor

The filter should be installed that the heating medium flow direction matches the arrow cast on the hull, and the cover was at the bottom of the filter. Filters can be mounted on horizontal and vertical pipelines. It is recommended that using shut-off valves immediately behind and ahead of the filter, will make it easy to clean the filter insert or replace it.

Assembly and installation

  1. Hang the boiler up in a vertical position on fixing screws with the inlet and outlet pipes to the bottom, maintaining clearances from the walls and the ceiling.
  2. Connect the boiler to the central heating system equipped with cut-off valves.
  3. Fill the central heating system with treated water or non-freezing liquid which influences the durability of immersion heaters.
  4. Vent the central heating system.
  5. Connect a boiler to the electrical system.
  6. Assembly and connect the room regulator sensor and other devices cooperating, according to the Connection point external sensors and devices.
  7. After completing the above steps start the boiler, set up boiler language and maximum output, and vent the pump [CONFIGURATION> PUMP> VENTING> TURN ON].
  8. Set the maximum temperature factor in the installation [CONFIGURATION> CENTRAL HEATING> MAX BOILER TEMP.].

Do not connect any voltage into MA, RT, Tcyl entries! This can result in permanent controller damage

Connection to one-phase electrical system (for boilers of 2kW, 4kW, 6kW, and 8kW)

PNL – points of neutral and protective conductor connection

  1. temperature limiter
  2. additional conductors (for one-phase system only)

Connection to the three-phase electrical system (for boilers of 4, 6, 8kW, you should delete conductors (2) and switch no. 3 ON, p. 8).PNL – points of neutral and protective conductor connection
PF – points of phase conductors connection

  1. temperature limiter

Selecting the type of power supply installation

  • MA – master appliance
  • RT – alternative room temperature sensor
  • Tcyl – DHW cylinder temperature sensor
  • TWV – the place of assembly three-way valve
  • PUMP.C – the place of the circulation pump assembly

Do not connect any voltage into MA, RT, Tcyl, entries! This can result in permanent controller damage.

Tcyl – DHW cylinder temperature sensor
The connection cable of the temperature sensor should be as short as possible, it should not be routed in close proximity to the power cords and do not twist around other cords. The DHW cylinder temperature sensor can be optionally replaced thermostat, to do this switch the input type Tcyl [CONFIGURATION> DHW TEMPERATURE> REGULATION> OUTSIDE] and connect the NO contacts of the thermostat to the Tcyl terminals.

MA – Master appliance (entry MA)
In order to limit the power used, i.e. the boiler can cooperate with other appliances such as an electric water heater. In order to do so, an electrician should install in line an extra open contact to the MA entry (voltage free entry), so that when a master appliance gets on, the contact opens, and the boiler switches off- it results in heating blockage and pump’s standstill.

RT – room temperature regulator
Optional controlling the boiler operation depending on the room temperature. RT entry should be activated [CONFIGURATION> ROOM TEMP.> TEMP. SENSOR> RT] – then opening the voltage free contact will result in the switch off heating up the CH.

Three-way valve control (TWV entry)
Switching the boiler operation to central heating or heating water in the coil of DHW cylinder is carried out using a three-way dividing valve with an actuator. Depending on the model used, the device should be connected as shown on the diagrams, page no. 8and the manual of valve and servomotor. Note: In case of activation DHW cylinder you should follow Service / Configuration – cylinder. Valves can be purchased in KOSPEL.

Control panel

  1. display
  2. navigation dial to preview dial and settings
  3. dial to choose the operating mode

Entering individual functions takes place after selecting a corresponding function screen and pressing the navigation dial. The boiler’s error is signaled on the main function screen. After pressing the navigation dial, there is a list of detected errors.Use the operating dial [3] to set one of the modes: winter + / summer / off . By turning the navigation dial [2] (left or right), with winter or summer mode active, change between function screens on the display [1].

  • main: informs about the basic boiler’s parameters (details in the table),
  • settings: it allows on the customization of boiler’s parameters and additional heating circuits to user’s preferences,
  • service/configuration: allows to heating system configuration to object’s conditions (available for installation company and specialized services after entering the access code) and a preview of input and output boilers’ signals and current parameters,
  • PARTY / HOLIDAY / MANUAL: it allows for the fast change of work’s algorithm depending on the needs.


  1.  heat reception signaling
  2. the temperature of return from installation
  3. the temperature of charging installation
  4. the preset temperature in the installation or symbol (when heating is blocked by a signal from the main device)
  5. DHW cylinder temperature
  6. executing of heating program
  7. signaling of closed controller contact room (order to heat the room)

SETTINGS: Adjusting boiler parameters to user preferences.

  • BOILER TEMPERATURE: Target temperature
  • DHW CYLINDER TEMPERATURE: (only available in systems with a DHW cylinder and with switched on internal adjustment [CONFIGURATION> DHW TEMPERATURE> REGULATION> INSIDE])

  1. no. of time frame according to schedule (max 5)
  2.  start time of the selected temperature
  3. finish time of the selected temperature
  4.  temperature selection:
  • No. 1 … No. 8> setting 8 of daily programs in each daily program where there are 3 editable time frames, which can have one of the room temperature sets ( , ). The procedure for setting daily programs is described in the Daily schedule. In any other case, the economic temperature will be activated ( ).
  • WEEKLY: assign one of for each day of the week daily programs.

CIRCULATION PROGRAM (available only within active circulation in system DHW):

  1. no. of time frame according to schedule (max 5)
  2. start time of circulation pump operation
  3. finish time of circulation pump operation
  • No. 1 … No. 8> setting of 8 daily programs in each daily program. There are 3adjustable time intervals in which it will work circulation pump. The procedure for setting daily programs is described in the Daily schedule.
  • WEEKLY: assign one for each day of the week from set daily programs.
  1. DISINFECTION (only available in systems with DHW):
    • TEMPERATURE: the value of the temperature in the cylinder during disinfection,
    • WEEKDAY: the day for disinfection during the automatic program,
    • TIME: the time it takes to disinfect with the automatic program,
    • WORKING TIME: time of disinfection (calculated from the moment the temperature is reached disinfection),
    • AUTOMATIC WORK: automatic work start of disinfection at the set time (time,day of the week),
    • CIRCULATION: it is possible to set disinfection of the entire installation or only DHW,
    • ACTIVATE NOW: manual start of disinfection (independent of the day’s or time’s set.
  2. TIME/ DATE:
    • setting of the current system time (YEAR / MONTH/ DAY / HOUR / MINUTE).
    • AUTOMATIC TIME CHANGE: Yes > automatic system time changeover from summer to winter and vice versa.
    • BRIGHTNESS MIN: Set the brightness of the display in standby mode.
    • BRIGHTNESS MAX: setting of the brightness of the display during the work.
    • SOUND:
      Yes – the sound of working dial
      No – there is no sound of the working dial.
    • DIAL SENSITIVITY: 1 – high / 4 – low.
    •  the choice of menu’s language.
  5. SYSTEM:
    • TYPE: EKCO.Lx3 (identity),
    • MSK PROGRAM shows the version of boiler’s controllers program,
    • PW PROGRAM shows the version of the panel’s program,
    •  MAX RATED POWER: shows the settled power of boiler,
    • RESET: boiler’s start-up,
    • FACTORY SETTINGS: restore.


PREVIEW OF PARAMETERS: a preview of the boiler’s input and output signals.
CONFIGURATION:  adaptation of the boiler to the heating system in the facility:

Changes in the configuration menu are possible after entering an access code. When prompted for an access code, turn the navigation dial to the required code and confirm the code by pressing the dial. If you want to retract from the code request screen, hold the navigation dial or wait until automatic return to the main function screen.

Code: 987

    • MAX BOILER TEMP.: maximum CH temperature Attention: adjustment of too high-temperature parameters not compatible with the type of building, central heating installation, and building’s insulation may lead to high exploitation costs.
    • MAN the temperature of charging: set point of temperature flow CH.
      Yes – if the temp of inside’s sensor of boiler drops below 5, the circulation pipe will be turned-on
      No – protection turned-off. The need for configuration in case of central heating installation filled in with the non-freezing liquid.
    • HW COIL TEMPERATURE: the setting of coil’s power.
    • REGULATION: DHW cylinder temperature control – INSIDE> according to Tcyl sensor/ OUTSIDE> according to the external thermostat (not available when OUTSIDE there are items in the menu: DHW CYLINDER TEMPERATURE, DHW CYLINDER PROGRAM, DISINFECTION, and MANUAL mode).
    • CANCEL: turning off the function of DHW.
      If function DHW is turned-off, there will be only a possibility to turn it on.
  • CIRCULATION: switching the circulation “YES” or “NO”,
  • PUMP:
    • PUMP OVERRUN: time when the pump is switched on for a short period of time with a long standstill (blocking protection),
      Yes – works depending on the demand,
      No – continuous work.
    • TYPE: pump’s type,
    • REGULATION: CONST P. – constant pressure,
    • VARIABLE P. – variable pressure. In the regulation mode (CONST P.)the pressure difference produced by the pump is maintained at the constant set level in terms of performance to pump’s maximum characteristics. This type of regulation is recommended for floor heating circulations or older heating systems with pipes of larger diameters, as well as for all applications with constant characteristics. In regulation mode (VARIABLE P.) the pressure’s difference produced by the pump is maintained at the level of settings changing linearly between 1/2H and H. Setting pressure differences decreases or increases depending on the flow. This regulation type is recommended for heating systems with heaters, thanks to which flow noise in thermostatic valves is reduced.
    • VENTING: TURN ON / CANCEL During the venting procedure (10 min) the pump works alternately with a maximal and minimal rotation speed. Thanks to this air bubbles are concentrated and easier to remove from the installation.
    • H MAX- pump’s raising the height
  • MAX RATED POWER: the setting of the boiler’s rated power.
    No – switching the control off- pressure control should be switched off only when the boiler works in the open installation.

Exit any menu item by pressing „END” or by pressing and holding the navigation dial.
When not operated by the user, the main function screen will appear after about 3 min.


Fast switching algorithm of work depending on the needs.

  • PARTY: SET DURATION TIME (from 1 to 24 hours or until the user’s change).
  • HOLIDAY: SET DURATION TIME (from 1 to 60 days or until the user’s change).

if any of the above modes is turned on, after entering the „PARTY/ HOLIDAY” we can turn it off.
the symbol of the activated mode is signaled on the main function screen.

Daily schedule:

  1.  time period panel
  2. no. of time frame according to schedule (max 5)
  3. start time
  4.  finish time
  5. temperature selection (applies to DHW cylinder)
  6. command (active when editing): accept delete add

For the hot water circuit in the daily schedule, the start time is defined (3) and the end time (4) of keeping the selected temperature (5) in the tank. Outside the set time intervals, the temperature will be maintained in the tanking economy. The start time is set in the schedule for the circulation circuit and end of circulation pump operation. To change the parameters for the daily schedule select chosen program number and press the navigation dial.  The first parameter flashes (starting time) – use the navigation dial to set the new time frame value (hour and minutes separately) by turning the dial left/right and confirming it by pressing the dial again. At the same time, the next screen starts to flash allowing an edition of the next parameters (finishing time). The last editable position is a command. In order to save changes select the command ‘save’ and press the dial to finish editing. To delete the selected time frame start editing chosen time frame and by pressing the dial goes to the command position, the select command ‘delete’, and press the dial. To add new time frame, select last defined time frame and by pressing the dial to go to a command position, the select command ‘add’, and press the dial to add a new time frame (edition of new time frames described above).

If there are no defined time frames, then after selecting „new” the time frame 00:00 am to 23:59 pm will be set, which should be edited in accordance with the user’s needs.
The daily program will be saved to the boiler’s settings by pressing the command „END”.

Technical data

Max. pressure MPa 0,3 (3 bar)
Min. pressure (concerns to the closed system) MPa            0,05 (0,5 bar)
Outlet temperature °C 20 ÷ 85
Max. temperature °C 100

Dimensions (height x width x depth)




716 x 316 x 235
EKCO.L3 716 x 316 x 191
EKCO.LN3 ~20,5
Weight EKCO.L3 kg ~15,8
Boiler’s connections G 3/4″ (inside thread)
Expansion vessel EKCO.LN3 l ~5
Safety class IP 22
Boiler 4 / 6 / 8

Rated power


















Rated voltage




400V 3N~


Rated current

















Min. power supply cable cross-section  










Max. power supply cable cross-section mm2  

5 x 16

Max. allowed network impedance  









Boiler 12 / 16 / 20 / 24

Rated power






16             20




Rated voltage


400V 3N~


Rated current






3×23,1       3×28,8



Min. power supply cable cross-section  



5 x 2,5


5 x 4


5 x 6

Max. power supply cable cross-section mm2  

5 x 16

Max. allowed network impedance  





KOSPEL S.A. 75-136 Koszalin, ul. Olchowa 1
tel. +48 94 31 70 565
[email protected] www.kospel.pl