MIKOTERM TK-eLG Series User manual

Guidebook for installation, handling and maintenance –ENG
TK e LG 6kW –models IP20 / IP54
Electric boiler for heating systems
FU-TK-ELG-09/2023

CONTENT
1. Description of symbols and instructions for safe work
2. Device data
2.1. Typology
2.2.1 Statement on compliance
2.2.2 Regular application
2.3 Instructions for mounting
2.4 Instructions for work
2.5 Anti-frost protection and inhibitors
2.6 Norms, regulations and standards
2.7 Tools, materials and auxiliary measures
2.8 Minimum distances and Inflammability of construction materials
2.9 Product description
2.10 Waste disposal
2.11 Scope of delivery
2.12 Factory data plate
2.13 Transport
3. Dimensions and technical data
3.1 Dimensions of TK-eLG –models IP20 / IP54
3.2 Components
3.3 Technical data of TK-eLG
4. Device installing
4.1 Warnings before mounting
4.2 Distances
4.3 Front door opening procedure
4.4 Montage TK-eLG on wall
4.5 Execution of hydraulic connections
4.5.1 Installation filling with water and waterproof testing
4.5.2 Heating pump air emission and de-blocking
4.5.3 Venting and installations
5. Electrical connection
5.1 Connection to three-phase mains
5.2 Connection to mono-phase mains
5.3 Connecting the power cable - Safety circuit
5.4 Electrical schemes
6. Commissioning
6.1 Before commissioning
6.2 First start
6.3 Start-up log
7. Operating the electric heater
7.1 Operating instructions
8. Cleaning and maintenance
8.1 TK-eLG cleaning
8.2 Testing of working pressure, water replenishment and venting of the installation
8.3 Water filling and venting of the installation
8.4 Inspection and maintenance log
9. Environment protection / Waste disposal
10. Troubles and troubleshooting
11. Product data sheet (in accordance with EU regulation no. 811/2013)

1. Description of symbols and instructions for safe operation
1.1 Description of symbols
Warnings
Warnings in text are marked by gray triangle,
background warnings are framed
Electric shock danger is marked by lightning
symbol in warning triangle
The signal words at the beginning of the warning mean the
way and level of consequences if protective measures are
not applied.
NOTE means that smaller material damages may occur
CAUTION means that smaller to middle injuries may occur
WARNING means that heavy injuries may occur
DANGER means that heavy injuries may occur
Important information
Important information, meaning no danger for people and
things, are marked by the symbol displayed in the following text.
These are limited by lines, above and below the text.
Further symbols
Symbol
Meaning

Action step

Directives to other places in document or to other
documents
.
•
Enumeration/Entry from the list
–
Enumeration/Entry from the list (2.)
Table 1: Symbols
1.2 Instructions for safe work
General safety instructions
Non-compliance with safety instructions may cause heavy
injuries –or lethal outcomes and material damages and
environment pollution.
Electrical installation should be examined by an expert
prior to the device assembly.
All electric works should be performed by authorised
person in accordance with corresponding regulations.
Commissioning and maintenance and repairs should be
done by authorised service only.
Technical acceptance of installations should be performed
in accordance with corresponding regulations.
Danger because of disrespecting security rules in alert
situations, for example fire.
Never expose your-self to life danger. Own security
always has priority.
Damage occurred because of wrong handling
Wrong handling may lead to injuries of persons and/or
installation damage.
Make sure that device is available only to professionals.
Installation and commissioning, and maintenance and
repair, must be done only by service authorised for
electrical works.
Installation and commissioning
Placement of device can be done only by authorised
service.
Boiler can be turned on only if installation is with
corresponding pressure level and working pressure
regular. Do not close security valves in order to avoid
damage caused by too high pressure. During warming
water can leak on security valve of the hot water circuit
and hot water pipes.
Install this device only in the room where freezing is not
possible to occur.
Do not store or dispose inflammable materials or liquids in
the vicinity of this device.
Keep safe distance in accordance with valid regulations.
Life threat of electric power shock
Children aged 8 years and older, persons with reduced
physical, motor or mental abilities, persons with a lack of
experience or insufficient training, can use such devices if
they are supervised or given instructions related to the
safe use of the device, as well as presented the dangers
arising from it. Appliances should not be cleaned or
subjected to user maintenance by children without
appropriate supervision.
Description of symbols and instructions for safe work

Description of symbols and instructions for safe
Secure electric power connecting is done by authorised
service! Comply with connecting scheme.
Prior to any work: turn off electric power supply. Secure
against accidental turn on.
Do not mount this device in moist rooms.
Control examination /Maintenance
Recommendation for user: conclude agreement on
maintenance with authorised service to perform annual
maintenance and controlling examinations.
User is responsible for safety and environmental acceptance
of the installation.
Comply with safety work instruction as given in the chapter
Cleaning and Maintenance.
Authentic spare parts
There shall not be undertaken any responsibility for damage
occurred due to spare parts not delivered by the
manufacturer
Use onlyoriginal spare parts.
Material damages due to freezing
When there is damage due to freezing drain water from the
boiler, tank and pipelines for heating. Danger of freezing does
not exist only when entire installation is dry.
Instructions for service
Inform users about mode of work of device and instruct them
in maintenance
Inform users not to perform any modifications or repair on
their own
Warn users that children cannot stay near heating
installations
Fill in and submit Commissioning log and Handover log
attached in this document
Deliver technical documentation to the user.
Waste disposal
Dispose packaging materials in ecologically Acceptable
manner.
Secure device in ecologically acceptable manner and in
authorised place.
Cleaning
Clean outside of device with wet cloth.

Device data
2. Device data
These instructions contain important information about safe
and professional assembly, commissioning and
maintenance of the boiler.
These instructions are for installers who have knowledge for
work with heating installations due to their professionalism
and experience.
2.4 Instructions for work
When working with heating installation follow next
instructions:
Boiler should work in working range up to max
temperature of 80°C and min pressure of 0.7 bars to max
pressure of 2.6 bars, which should be controlled on
regular basis.
2.1 Typology
These instructions are related to the following kind of device:
TK-eLG
6 kW
2.2.1 Statement on compliances
We hereby state that devices are tested in accordance with
the following directives: 2014/35/EU (low voltage directive,
LVD) and 2014/30/EU (electro-magnetic compatibility
directive, EMC).
2.2.2 Regular application
TK-ELG may only be used in conjunction with a heat
pump, as a supplementary heat source controlled via a
heat pump. Any other use will be considered improper
and the manufacturer assumes no responsibility for
damage caused by improper use.
To ensure proper use, it is necessary to follow the operating
instructions, data on the nameplate and technical data.
Boiler should be handled only by adults who are familiar with
instructions and work of the boiler
Do not close safety valve
Inflammatory objects must not be put on the boiler surface
or close to it (within safety distance)
Boiler surface clean only with non-inflammatory products
Inflammatory substances do not keep in the room for
boiler installation (e.g. petroleum, oil, etc.)
During the work no one lid must be open
Keep safe distance in accordance with regulations
2.5 Inhibitors and anti-frost products
It is not allowed to use protective products against frost
neither inhibitors. Id it is not possible to avoid anti-frost
protection then should use anti-frost products allowed for
heating installations.
Anti-frost products:
Reduce lifetime of the boiler and its parts
Reduce heat transmission
2.3 Instructions for mounting
Use only original spare parts of the manufacturer or
spare parts approved by the manufacturer. There
shall not be any responsibility for damages caused by
spare parts which have not been delivered by the
manufacturer.
When mounting heating installations keep with the following
instructions:
Valid regulations in construction industry
Regulations and norms on safety-technical equipment of
heating installations
Changes on the place of mounting according to valid
regulations propisima

Device data
2.6 Norms, regulations and standards
This product is in compliance with the following regulations:
EN 50110-1:2013 –Operation of electrical installations - Part
1: General requirements
EN 55014-1:2017; EN 55014-2:2015 –Electromagnetic
compatibility - Requirements for household appliances,
electric tools and similar apparatus - Part 1: Emission - Part 2:
Immunity - Product family standard
EN 60335-1:2016 Household and similar electrical appliances
- Safety - Part 1: General requirements
EN 61000-3-2:2019 Electromagnetic compatibility (EMC) -
Part 3-2: Limits - Limits for harmonic current emissions
EN 61000-3-3:2014/A1:2020 Electromagnetic compatibility
(EMC) - Part 3-3: Limits - Limitation of voltage changes,
voltage fluctuations and flicker in public low-voltage supply
systems
2.7 Tools, materials and auxiliary measures
Standard tools for heating installations, water supply and
electric-installations are needed for mounting and maintenance
of the boiler.

2.8 Minimum distances and burnable 2.9 Product description
construction materials
The TK-eLG is designed to support a heat pump and can only
work in conjunction with a heat pump. This device does not
have a working thermostat (it has a protective thermostat), but
forwards the information from the temperature sensor to the
thermoregulator of the heat pump. The heat pump thermostat
decides whether and when the electric heater will be switched
on.
TK-eLG plays an important role in the proper operation of the
heat pump. Its activation is necessary (sometimes desirable) in
the following situations:
• If the water temperature is less than ≈20 ° C, the heat pump
will not be able to start without preparation (heating) using an
electric heater (it is necessary to turn on the electric TK-eLG)
• Defrosting when the air temperature is low can be long-
lasting or impossible without the help of an electric heater (it is
necessary to turn on the electric TK-eLG).
• On extremely cold days when the heat pump COP has the
lowest value, TK-eLG is switched on as a backup to keep the
heating of the building at a comfortable level (preferably
switching on the electric TK-eLG).
• In case of failure (servicing) of the heat pump, the TK-eLG
takes over the heating of the building - until the pump is
operational (preferably switching on the electric TK-eLG).
For these reasons, this device does not have the option of
manual on / off, because in that case - if it is manually turned
off, the heat pump could enter the blockage. The TK-eLG must
always be ready for operation, and the decision to switch on is
made by the heat pump.
TK-eLG is designed for wall mounting. The TK-eLG is wall-
mounted using the supplied mounting kit.
Table 2: Flammability materials and composition of
elements according to DIN 4102 The basic components of TK-eLG are:
Depending on valid regulations, other minimum distances
could be applied, different than mentioned below.
Comply with regulations of electrical installations and
minimum distances which are in force in the subject
country.
Minimum distance for heavy inflammable and self-
extinguishing materials is 200 mm.
The minimum distance for flammable materials is 400 mm.
• TK-eLG body with electric heaters
•Safety valve 3bar
•Switchboard with automatic
The TK-eLG body consists of a welded heat-insulated sheet
steel vessel in which an electric heater is mounted. The built-
in thermal insulation is vapor-tight, reduces heat loss and
prevents condensation on the TK-eLG vessel. This allows the
TK-eLG not to have to be disconnected from the mains (by
bypass valve) when the heat pump is running in cooling
mode.
The safety thermostat and temperature sensor are located on
top of the TK-eLG vessel.
TK-eLG formwork is made of pickled sheet metal, protected
by electrostatic plasticization.
When the TK-eLG door is opened, a switchboard with a safety
assembly, connection terminals and relays for switching on
the heater is available.
Device data
Inflammability of components
A
Non-inflammable
A 1:
Non-inflammable
Asbestos, stone, wall tiles, baked
clay, plaster (with no organic
additives)
A 2:
With smaller
quantity of
added elements
(organic
components)
Plaster cardboards plates, base
felt, glass fibres, plates of
ACUMIN, ISOMIN, RAIOT,
LOGNOS, VELOX, AND
HERACLITUS
B
Inflammable
B 1:
Hardly inflammable
Beech, oak, veneered wood, felt,
HOBREX, VERSALIT and
UMAKARTplates
B 2:
Normally
inflammable
Pine, larch and spruce, veneered
wood
B 3:
Inflammable
Asphalt, cardboard, cellulose
materials, tar-paper, plywood
plates, cork plates, polyurethane,
polystyrene, polyethylene, floor
fibre materials

2.10 Waste disposal
 Dispose packaging materials in ecologically sound
manner
 Components that should be changed dispose in ecologically
sound manner
2.11 Delivery scope
When delivery the TK-eLG, stick to the following:
 Check if packaging is damaged during delivery
Check if delivery is complete
2.12 Factory plate
Factory data plate is placed on the external side of the TK-
eLG and contains the following technical data:
TK-eLG type
Batch / Catalogue number
Power
Input power
Maximum temperature
Working pressure
Mass
Electric power supply
Protection grade
Manufacturer
2.13 Transportation
NOTE: Transportdamages
Pay attention on instructions for transportation
on packaging
Use adequate transportation means, i.e. carts for
bags with tighten strip.
The product should be in horizontal position
during transportation
 Avoid shocks or collisions
Packed TK-ELG put on carts for bags if needed secure
it with strip and drive it to its mounting place.
Remove packaging.
Remove packaging materials and dispose it in
ecologically acceptable manner.
Device data
Part Pieces
Electric boiler TK-eLG
1
Assembly Set
1
Instructions for handling
1

Dimensions and technical data
3. Dimensions and technical data
3.1 Dimensions of TK-eLG models IP20 / IP54
Boilers of the TK-eLG series are intended for wall mounting.
Figure 1a: Boiler dimensions TK-eLG 6kW - model IP20 for indoor installation with hydraulic connections on the top and left side.
IMPORTANT !
Model IP 20 is only for left mounting!
TK-eLG 6 kW - IP20 for indoor installation

Dimensions and technical data
Figure 1b: Boiler dimensions TK-eLG 6 kW - model IP54 for outdoor installation with hydraulic connections on the right or left side
IMPORTANT !
Model IP 54 is produced separately with hydraulic connections left or right!
Table 3b Dimensions (mm) TK-eLG 6 kW - model IP54 for outdoor installation with hydraulic connections on the right or left side
A
B
C
D
E
F
TK-eLG IP54 - 6 kW D
620
260
220
120
390
110
TK-eLG IP54 - 6 kW L
620
260
220
120
390
110
TK-eLG 6 kW - IP54 for outdoor installation

Dimensions and technical data
3.2 Components
1Return line
2Fuse assembly
3Hanging bracket
4Pressure line of the boiler
5Safety thermostat
6Clamps
7Relay for switching heating group
8Boiler vessel
9Thermal insulation TK-ELG
10 Safety valve 3bar
11 Safety valve drain pipe
12 Electric heater in TK-ELG
13 Temperature sensor
14 Power cable inlet
15 Screws for closing the formwork
16 Signal cable entry
Image 2: TK-eLG components 6kW

Dimensions and technical data
3.3 Technical data TK-eLG
Unit
Mono-phase power supply
Three-phase power supply
Power
kW
2
4
6
Usability level
%
99
99
99
Number of power grades
1
2
2
Division of power grades
kW
1 ×2
2 ×2
2+4
Network voltage
VAC
1 N ~ 230V 50 H z
3 N ~ 400 / 230V 50 H z
Ingress protection rating
IP54 / IP20
Main fuse required
A
1 ×16
1 ×25
3 ×16
Min. cable cross-section
mm ²
3 ×2,5
3 ×4
5 ×2,5
Max. allowed working pressure
bar
3,0
Min. allowed working pressure
bar
0,5
Max. temperature
°C
80
Water volume
l
4,5
Discharge line connection
DN25 (1”) SN
Return line connection
DN25 (1”) SN
Device weight (without water)
Kg
10,5
Table 4: technical data TK-eLG 6kW

Installation
4. Installation of device
CAUTION: Human or material damages occurred
because of irregular installation !
Never install TK-eLG without expansion dish (AG)
and safety valve.
TK-eLG must not be installed in protective zone of
important area or at the place of bath.
NOTE: Material damage due to freezing !
TK-eLG must be installed only in room safe of
freezing.
4.2 Distances
DANGER: Fire threat due to burnable materials
and liquids!
Do not dispose burnable materials and liquids
close to the TK-eLG.
Let know the user the valid regulations for
minimum distances from burnable materials
(section 2.8).
Comply with regulations on electric installations and
minimum distances in force in subject countries.
Place TK-eLG on the wall in such manner to leave free
space as illustrated in the Image 3
4.1 Be careful prior to assembly
NOTE: Material damage occurred due to
incompliance with further instructions !
Respect instructions for boiler and all installed
components.
Prior to installing take care of the following:
All electrical connectors, protective measures and fusses should be
done by professional person respecting all valid norms, regulations
and local laws
Electric connector should be done according to the connecting plans
After corresponding installation of device execute grounding of the
plant
Before opening device and all works turn off electric supply
Non-professional and non-authorised attempts to connect device
under voltage can produce material damage of device and hazardous
electrical shocks.
Figure 3a: Minimum free space dimensions for
the model with hydraulic connections on the left
A = 500 mm / B = 250 mm / C = 500 mm / D = 500 mm

Installation
4.3 Front door opening procedure for
TK-eLG
The boiler front cover must be removed due to the
connection to the electrical installation.
Unscrew the 6 screws from the top cover and 6 from the
bottom cover.
Gently pull forward to remove the boiler front cover.
Image 4: Boiler opening (disassembly of the front cover)
4.4 WALL MOUNTING TK-ELG
NOTE: Material damage occurred by irregular
installation on the wall!
It is necessary to use proper material for fixing
This chapter describes mounting the TK-eLG on a wall.
Plot the drill hole positions for the mounting kit respecting
the minimum free space dimensions next to the TK-eLG
(Image 3a).
Drill the holes according to the dimensions for the given
type of TK-eLG.
Insert plastic dowels that are part of the device packaging
(or dowels adequate for a non-standard wall type) into the
drilled holes.
Then fasten the bracket with the screws supplied with the
dowels.
Carefully hang the device on the wall
Make sure the TK-eLG is upright.

Installation
IMPORTANT !
Model IP 54 is produced especially with hydraulic
connections on the left or right!
TK-eLG 6kW - model IP54 for outdoor
installation
Take care of the correct position of the
boiler

Installation
4.5Hydraulic attachments execution
NOTE: Material damages caused by permeable
connections!
Attachment duct lines install without connecting
on TK-ELG connections.
NOTE: Installation damage due to bad quality of
water! Heating installation can be damaged by
corrosion or scale depending on water
characteristics.
Comply with filling requests for water according
to VDI 2035 or project documentation and
catalogue.
Heating duct lines connect as follows:
Connect return line on connection 1(image 2).
Connect start line on connection 4(image 2).
4.5.1 Filling the TK-eLG with heating
water and sealing test
 Impermeability should be tested prior to put on the
boiler.
DANGER: Injuries and/or material damages can
occur with overpressure when testing watertight!
High pressure can damage regulatory and
safety devices and reservoir.
After filling with water set the TK-ELG on
pressure that is equal to the opening pressure
of safety valve.
Comply with maximum pressure of installed
components.
After testing sealing, open again closing
valves.
Make sure that all pressures, regulatory and
safety parts work correctly
DANGER: Health threat due to mix of drinking
water!
It is demanding to respect state norms and
regulations on avoiding mix drinking water
(with water from heating installations).
Comply with EN 1717.
NOTE: Material damage due to temperature
tension.
If you fill the TK-ELG in hot condition,
temperature tension can cause cracks due to
tensions. TK-ELG will start to leak
Fill the TK-ELG only in cold condition
(temperature of empty duct can be max 40°C)
Fill the TK-ELG only through quick valve on
pipe installation (return line) of the TK-ELG
Connect the filling hose to the water supply network
and slowly fill it with water so that all the air comes out of it
and the water starts to flow continuously.
Close the tap on the water supply network and
connect the free end of the hose to the tap for filling and
emptying the heating installation. Secure the hose with a
clamp.
Open the installation filling and draining tap and
slowly charge the TK-ELG. Monitor the pressure rise and
close the tap when the operating pressure is reached.
Bleed the installation via the valve on the radiator.
If the operating pressure drops by venting, the water
must be topped up.
Test for leaks according to local regulations.
After you have tested the tightness, open all the
elements that you closed due to filling.
Check that all safety elements are working properly.
If the TK-ELG is tested for leaks and no leakage is
observed, set the required operating pressure, according to
the pre-pressure of the expansion vessel.
Remove the hose from the filling and emptying tap.
Enter the operating pressure and water quality
values in the operating instructions.
4.5.2 Heating pump air emission and de-
blocking
This device does not have a circulation pump in it.
When the external pump is blocked, do the following:
Unscrew the center screw in the middle of the "head"
of the pump
Carefully try to unlock the pump shaft with a suitable
screwdriver.
4.5.3 TK-ELG venting and installation
This device does not have a built-in vent, because
the construction of the TK-ELG vessel is such that air
cannot remain trapped in the boiler but exits the TK-ELG
through the pressure pipe.
Ventilation must be installed on the installation, so as
to ensure venting of the air that can come out of the
pressure pipe, as well as venting of the entire installation.

In case only 2 phases are available, the boiler can be connected
according to Figure 6b, where the power is limited to 4kW, the
cross-sectional dimensions of the cable and fuse from Table 6 apply.
NOTE:
If the heat pump is supplied via a differential current protection
device - RSD (FID switch), and the SIGMAAIR is supplied
directly from the mains, or via another FID switch, the neutral
line (N) from the heat pump must be connected to the RSP3
clamps - to prevent until the FID switches "fall"
If both the SIGMAAIR and the Heat Pump are supplied from
the same place or there are no FID switches on the installation,
a neutral line from the RSN clamps can be fed to the RSP3
clamps.
Electric connecting
5. Electric connecting
DANGER: Life threat from electric shock!
Electric works must be done only by qualified
person.
Turn off voltage supply before opening
device and secure it against accidental turn
on.
Comply with assembly regulations.
When connecting TK-eLG on electric installation take
care on connections scheme and connecting plans.
Respect mandatory diameters of cables and fusses
power outside the TK-eLG.
This device is manufactured for connection to three-phase
power supply (3N ~ 400/230V 50Hz).
Connection to a single-phase network is possible with
a power limit of 2kW or 4kW, where the connection
must be fixed (no connection is allowed with a socket)
and the cross-section of the connection cable must be
according to Table 7a (7b).
5.1 Connecting TK-eLG to the electrical network
Image 6a: Connection to a three phase network POWER 6kW Image 6b Connecting in two phases POWER 4kW (2kW + 2kW)
RSP1, RSP2 –Temperature sensor connection clamps
(with Heat Pump)
RSP3 –Neutral line connection clamps (from Heat Pump)
RSP4, RSP5 –Signal connection clamps (230V AC) for
switching on the heater relay (from the Heat Pump).
Table 6: Nominal current, el. fuses and cross-section of power cables
for TK-ELG 6kW for three-phase power supply .
3N ~ 400/230V 50Hz
TK - 6
In[A]
3 × 8,7
Main fuses [A]
3 × 16
Min. cable cross section
5 × 2,5mm²
NOARK
fuses
NOARK
fuses
ETI
fuses
ETI
fuses
THREE-PHASE CONNECTION
POWER 6kW
TWO-PHASE CONNECTION
POWER 4kW (2kW + 2kW)

5.2 Connection of TK-eLG to single phase mains
Connection to a single phase network is possible with a power limit of 2kW or 4kW, where the connection must be fixed
(no connection is allowed with a socket) and the cross-section of the connection cable must be according to Table 7a,
or 7b for 4kW power.
ETI fuses
NOARK fuses
Image 7a: Shema for connecting cable to mono-phase
power supply SINGLE PHASE CONNECTION POWER 2kW
RSP1, RSP2 –Temperature sensor connection terminals
(with heat pump)
RSP3–Neutral line connection clamps (from Heat Pump)
RSP4 –Signal connection clamps (230V AC) for switching
on the heater relay (from the Heat Pump).
Table 7a: Nominal current, el. fuses and cross section of
power supplies 2kW limited power cables for single phase
power supply .
NOARK fuses
ETI fuses
Image 7b: Shema for connecting cable to mono-phase power
supply SINGLE PHASE POWER CONNECTION 4kW (2kW +
2kW)
RSP1, RSP2 –Temperature sensor connection terminals (with heat
pump)
RSP3–Neutral line connection clamps (from Heat Pump)
RSP4, RSP5 –Signal connection clamps (230V AC) for switching
on the heater relay (from the Heat Pump).
Table 7b: Nominal current, el. fuses and cross section of
power supplies 4kW limited power cables for single phase
power supply .
Electric connecting
1N ~ 230V 50Hz
LIMITED
POWER –2kW
In[A]
1 × 8,7
Fuses [A]
1 × 16
Min. cable cross section
3 × 2,5mm²
1N ~ 230V 50Hz
LIMITED
POWER –4kW
In[A]
1 × 17,4
Fuses [A]
1 × 25
Min. cable cross section
3 × 4mm²
SINGLE PHASE CONNECTOR
POWER 2kW
SINGLE PHASE CONNECTOR
POWER 4kW (2kW+2kW)

Electric connecting
5.3 Connecting the power cable –
Safety circuit
The connection is made according to the wiring diagram
given for each type of connection.
Phase conductors are connected to circuit breakers, and
line terminals of appropriate dimensions according to TK-
ELG power are provided for connecting neutral and
protective conductors.
A remote voltage trigger has been upgraded to the
automatic fuses, so that together they form a SAFETY
ASSEMBLY. In the event of overheating of the TK-ELG,
the safety thermostat sends a signal to the remote
voltage trigger, which activates and switches off the
"fuse" of the circuit breakers, ie the TK-ELG remains
without power - thus preventing any major breakdown. In
order for the TK-ELG to continue to operate, the
automatic fuses must be activated manually, which must
be done by a service technician, after determining the
cause of the overheating.
ATTENTION! When connecting phase
conductors, be sure to tighten the screws in the
terminal blocks well to achieve the best
possible connection between the conductors
and the clamps.
DANGER! Failure to connect the conductor and
clamps properly may result in overheating of the
terminal and failure.
NOTE! The connection of this device must be
carried out by a qualified person who is qualified to
perform this type of work.
The neutral (neutral) line is connected to the appropriate
clamps block (N). The neutral clamps line is blue.
Connect the earth conductor to the clamps block marked
with the earth sign. The line clamps for grounding the
device is yellow-green.
When inserting the power cord into the TK-ELG, carefully
route the cable to the clamps blocks, taking care not to
damage the cables inside the device.

5.4Electrical scheme
Image 8: Electrical scheme TK-eLG rated power 6 kW
Electric connecting
LEGEND : 3P A - 3-pole automatic fuse ETI ETIMAT C16A DA 10 - Remote voltage release upgraded to 3-pole automatic fuse ST - Safety thermostat (NO 95 °C) RS N - Approx. neutral wire clamp 10mm² RS PE - Approx. protective cable clamp 10mm² RSP 1, RSP 2 - Temperature sensor connection terminals (4mm²) TS - Temperature Sensor (PT-51F 50kΩ) RSP 3 - Connecting terminal (4mm²) of the neutral line (N) for switching on relays RE1 and RE2 RSP 4 - Connecting terminal (4mm²) of signal (230V AC) for switching on relay RE 1 (switching on the first stage of power) RSP 5 - Connection terminal (4mm²) of signal (230V AC) for switching on relay RE 2 (switching on the second power stage) RE 1, RE 2 - Relay for turning on the heater G1 - Heater 6kW (3 × 2000W)
EL. SCHEME TK-eLG