MIKOTERM eCompact Plus Series User manual

Guidebook for installation, handling and maintenance –ENG
eCompact Plus
Electric block-boiler for heating systems with thermoregulatory microprocessor
FG-eCompactPlus-01/2020

Content
1. Description of symbols and instructions for safe work
2. Device data
2.1 Typology
2.1.1 Statement on compliance
2.1.2 Regular application
2.2 Instructions for mounting
2.3 Instructions for work
2.4 Anti-frost protection and inhibitors
2.5 Norms, regulations and standards
2.6 Tools, materials and auxiliary measures
2.7 Minimum distances and Inflammability of construction materials
2.8 Product description
2.9 Waste disposal
2.10 Scope of delivery
2.11 Factory data plate
2.12 Dimensions and technical data
2.12.1 Dimensions and technical data for boiler eCompact Plus
2.12.2 Technical data
3. Transportation
4. Device installing
4.1 Warnings before mounting
4.2 Distances
4.3 De-mounting of front casing
4.4 Boiler mounting
4.5 Hydraulic connections testing
4.6 Systems on which the Boiler can be connected
4.7 Installation filling with water and waterproof testing
4.7.1 Filling the boiler with water and testing sealing
4.7.2 Heating pump air emission and de-blocking
4.7.3 Boiler and installation air emission
5. Electrical connection
5.1 Positions of introducer for the introduction of the power cable
5.2 Connecting power (voltage) cable
5.3 Scheme for connecting power (voltage) cable
5.4 Connect boiler's external control (room thermostat)
5.5 Electrical schemes
6. Commissioning
6.1 Before commissioning
6.2 First start
6.3 Start-up log
7. Handling heating installation
7.1 Instruction for work
7.2 Overview of the elements to adjust
7.2.1 Device functions
7.2.2 Basic settings
7.3 Regulation of heating
7.3.1 Boiler temperature adjustment
7.3.2 Boiler power adjustment
7.3.3 Warnings for pressure
7.3.4 Warnings for low temperature
7.3.5 Warnings for high temperature
7.3.6 Warning symbols and codes
7.3.7 Room temperature thermostat
7.3.8 Interruption of heating
7.4 Putting the boiler out of drive
8. Cleaning and maintenance
8.1 Boiler heating
8.2 Check the working pressure; add the water and air-vent
installations
8.3 Add the water and vent installation
8.4 Inspection and maintenance log
9. Environment protection / Waste disposal
10. Troubles and troubleshooting
11. Instruction for projecting
11.1 Pump Wilo-Para MSL/6-43/SC
12.Product data sheet (in accordance with EU regulation
no. 811/2013)
CONTENT

Electric shock danger is marked by lightning
symbol in warning triangle
Warnings in text are marked by gray triangle,
background warnings are framed
1. Description of symbols and instructions for safe work
1.1 Description of symbols 1.2 Instructions for safe work
Warnings
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
S y m b o l
Meaning


Action step

Directives to other places in document or to
other documents
•
Enumeration / Entry from the list
–
Enumeration / Entry from the list ( 2. )
Table1
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 toprofessionals.
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.
Donotclosesecurityvalvesinordertoavoiddamagecaused
by too high pressure. During warming water can leak on
security valve of the hot water circuit and hot waterpipes.
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.
Description of symbols and instructions for safe work

Life threat of electric power shock
Secure electric powerconnecting 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 only original spare parts
Material damages due to freezing
Whenthereisdamageduetofreezingdrainwaterfromthe
boiler, tank and pipelines for heating. Danger of freezing
does not exist only when entire installationis 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
Description of symbols and instructions for safe work


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.
2.1 Typology
These instructions are related to the following kind of device:
2.1.1 Statement on compliances
We hereby state that devices are tested in accordance with the
following directives: 2006/95/EC (low voltage directive, LVD)
and 2004/108/EC (electro-magnetic compatibility directive,
EMC).
2.1.2 Regular application
Theboilercanbeusedonlyforheatingthewaterforheatingsystem
and for indirect use of hot water. To ensure correct use it is
mandatory to comply with instructions for handling, data on the
factory plate and technical data.
2.2 Instructions for mounting
Use only original spare parts of the manufacturer or
spare parts approved bythe manufacturer. There shall
notbeany responsibilityfor damages caused byspare
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
2.3 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 0.7bar to max pressure of
2.6bar, which should be controlled on regular basis
Boiler should be handledonly byadults 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
2.4 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
2.5 Norms, regulations and standards
This product is in compliance with the following regulations:
EN 50110-1:2003 –Handling and work with electrical
installations
EN 55014:2001 –Electrical-magnetic compatibility –
conditions for consumers’ devices for households, electric
devices and similar devices
EN 60 335-1+ed.2:2003 Electric devices for households
EN 60 335-1+ed.2 zm.A1:2005 Electric devices for
households
EN 61000-3-2 ed.3:2006 Electrical-magnetic compatibility
(EMC) –emission limits for harmonic power
EN 61000-3-3:1997 Electrical-magnetic compatibility
(EMC) –Law on determination of fluctuation of voltage
and frequency of low power distributive network
2.6 Tools, materials and auxiliary measures
Standard tools for heating installations, water supply and
electric-installations are needed for mounting and maintenance
of the boiler.
Device data
eCompact Plus
6 ÷ 27 kW


2.7 Minimum distances and burnable
construction materials
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
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
Table 2: Ignitable materials and composition of elements
according to DIN 4102
2.8 Product description
Basic components of boiler:
Boiler body
Device frame and casing
Control unit
Pump
Expansion dish (8 l )
Processor board and boiler electronics
Water pressure sensor
Safety valve
Boilercanbeinstalledasintegralpartofthecentralheatingsystem,
floor heating, hybrid, or accumulation systems.
Boiler is compounded of weld housing of steel tin with thermal
insulation. The boileris fixed on the wall bysuppliedmounting set.
Installedheatinginsulationinboilerjacketreduceslossoftheheat,
and also protects against noise.
Safety elements (vent valve, managing surface fuse and
temperature safety limitation) are mounted at the top of boiler.
Depending on the type of the boiler, different elements of
heating are used. Heating elements’ performance can be
adjusted according to grades.
Different performance grades sets can be obtained through
control panel. Number and division of performance grades are
visible from technical data (see chapter 2.12.2).
Device data

1IN Return boiler’s line
2OUT Start boiler’s line
3Boiler’s exchanger
4Electric heaters
5Expansion dish
6Circulating pump
7Vent valve (on pump)
8Safety valve (on pump)
9Drain faucet
10 Automatic air vent
11 Automatic fuses with voltage trigger
12 Terminal for room thermostat
13 Microprocessor plate
14 Heater relay (9÷18kW) / contactor (24÷27kW)
15 Temperature sensor
16 Safety thermostat (STB)
17 Control panel with display
18 Flexible hose of expansion dish
19 Drainage hose of air vent
20 Power switch (ON/OFF)
21 Electric cable access sleeve
22 Drainage hose of safety valve
Image 1: Open device view
Device data

2.9 Waste disposal
Dispose packaging materials in ecologically sound manner
Components that should be changed dispose in ecologically
sound manner
2.10 Delivery scope
When delivery the boiler stick to the following:
Check if packaging is damaged during delivery
Check if delivery is complete
Part Pieces
Boiler eCompact Plus
1
Assembly Set
1
Instructions for handling
1
2.11 Factory plate
Factory data plate is placed on the external side of the boiler
and contains the following technical data:
Boiler type
Batch / Catalogue number
Power
Input power
Maximum temperature
Working pressure
Water volume
Mass
Electric power supply
Protection grade
Manufacturer
Device data


2.12 Dimensions and technical data
2.12.1
Dimensions and technical data for boiler
Image 2 : Dimensions and connection
Device data


2.12.2 Technicaldata
Unit
eCompact
Plus 6kW
eCompact
Plus 9kW
eCompact
Plus 12kW
eCompact
Plus 18kW
eCompact
Plus 24kW
eCompact
Plus 27kW
Power
k W
6
9
12
18
24
27
Usability level
%
99
99
99
99
99
99
Number of power grades
3
3
3
3
3
3
Division of power grades
kW
3×2
3×3
3×4
3×6
3 × 8
3 × 9
Network voltage
V AC
3 N ~ 400 / 230V 50 H z
Protection level
I P 40
Needed fuses for three
phase supply voltage
A
3×16
3×20
3×25
3×32
3×40
3×50
Minimum cable cross-
section for three phase
power supply
mm²
5 × 2,5
5×2,5
5×4
5×4
5 × 6
5 × 6
Needed fuses for single
phase supply voltage
A
1×32
1×50
-
-
-
-
Minimum cable cross-
section for single phase
power supply
mm²
3×4
3×6
-
-
-
-
Safety valve
bar
3
Max allowed working
pressure
bar
2,6
Min allowed working
pressure
bar
0,4
Max boiler temperature
°C
80
Water volume in boiler
l
12,5
Expansion dish volume
l
8
Connection of start line
DN20 ( 3 / 4 ”)
Connection of return line
DN20 ( 3 / 4 ”)
Device mass (without water)
kg
23
24
24
25
25
25
Dimensions
mm
710x430x230 (Height × Width × Depth)
Microprocessor Unit
EK_CPU_LCTR2 / LCI2
T a ble 3: Technical data of Device
Device data


3. 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 boiler 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
Transportation

4. Installation of device
CAUTION: Human or material damages occurred
because of irregular installation !
Never install boiler without expansion dish (AG)
and safety valve
Boiler must not be installed in protective zone of
important areaor at the place of bath
NOTE: Material damage due to freezing !
Boiler must be installed only in room safe of
freezing
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
4.2 Distances
DANGER: Fire threat due to burnable materials
and liquids!
Do not dispose burnable materials and liquids
close to the boiler
Let know the user the valid regulations for
minimum distances from burnable materials
(section 2.7)
Comply with regulations on electric installations and
minimum distances in force in subject countries
Place boiler on the wall in such manner to leave free space
as illustrated in the Image 3
Image 3 : Minimum distance during installation
A = 500 mm / B = 50 mm / C = 200 mm / D = 500 mm
Installation

WARNING! When connecting boiler to such
system it is mandatory to take care that both
pumps in the system push water in the same
direction to prevent flow crash. Increased
hydraulic tensions are possible including
cracking of some components.
4.3 Demounting front boiler casing
Boiler casing can be removed for simple handling and
installation (image 4)
Unscrew 3 bolts at top lid
Unscrew 3 bolts at bottom lid
With slow pulling toward you demount front casing of the
boiler
Image 4 : Opening the boiler (Demounting front casing)
4.4Mounting boiler
NOTE: Material damage occurred by irregular
installation on the wall!
It is necessary to use proper material for fixing
This chapter describes boiler mounting on the wall
Draw position of drilling holes for mounting set respecting
minimum distances (image 3)
Drill holes upon dimensions given in (image 2)
Put into drilled holes plastic dowel enclosed in device
packaging (or adequate dowel for unusual kind of wall)
Then screw bolts into delivered dowels (or other) in such
way that are left out from the wall min 5 mm-max 10mm
Carefully hang device on the wall
Make sure that boiler is placed vertically
Fixed boiler on the wall by mounting set and screw
4.5 Hydraulic attachments execution
NOTE: Material damages caused by permeable
connections!
Attachment duct lines install without
connecting on boiler connections
Heating duct lines connect as follows:
Connect return line on connection IN
Connect start line on connection OUT
4.6 Systems on which the eCompact Plus
Boiler can be connected
All systems for heating the space designed for 80/60
temperature regime (or lower)
Closed heating systems
Systems with boiler on solid fuel
It can be used as heating device for water in accumulating
boilers over exchanger.
It can also be used in certain technological processes
providing that there is no need for water temperature
higher than 60°C.
It must not be used for direct heating of domestic hot
water.
Installation

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 boiler 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: 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
NOTE: Material damage due to temperature
tension.
If you fill the boiler in hot condition,
temperature tension can cause cracks
due to tensions. Boiler will start to leak
Fill the boiler only in cold condition
(temperature of empty duct can be max
40 °C)
Fill the boiler only through quick valve on
pipe installation (return line) of the boiler
4.7Filling the installations and watertight
testing
Before system filling, the boiler must be connected
on electric installations and turned on (over ON/OFF
switcher at bottom side of the boiler), to STAND BY
regime to follow up with pressure value in
installations on display.
Using buttons ‘‘-’’ and ‘‘+’’ adjust thermo-regulation
to pressure measuring mode (LED diode shines near
the mark „bar“).
4.7.1 Filling the boiler with heating water and
sealing test
Waterproof should be tested prior to put on the boiler.
1. Check pre-pressure of expansion dish. If is pressure
level below recommended (1bar) –inflate
expansion tank. Check whether the expansion
dish volume (integrated in the boiler) is sufficient
for connection to the existing heating system. If
required, an additional expansion tank must
be installed.
2. Open faucet for filling and exhausting
3. Fill the boiler slowly; watch pressure on display (image 5)
Image 5: Display with marked pressure
When working pressure is reached close the faucet.
Use vent valve to air vent the boiler (image 1, position 10)
Air-vent the installation through valve on radiator
When lower working pressure by air vent, water must be
re-filled
Test watertight according to local regulations
After watertight testing, open all elements that were closed
doe to filling
Check if all safety elements work correctly
When the boiler is tested and no leaking was spotted -
adjust correct working pressure
Remove hose from the filling/exhausting faucet
Enter working pressure values and water quality into
instructions for handling
During the first filling of repeated filling or when change
the water
Comply with requests for filling water
4.7.2 Heating pump air emission and de-blocking
Pump that exists in this device has automatic air vent so it is
not necessary to perform any action about this. If not fully
vented, access manual venting according to the instructions
in Chapter 11.
4.7.3 Boiler and installation air emission
On the top plate of the boiler there is an air vent. This pot is
automatic, so if you follow the rule of slow charging installation
and boiler, additional manual venting will not be necessary.
Installation

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
5. Electric connecting
5.1 Positions of introducer for the
introduction of the power cable
This device is equipped with three (3) sets of introducers for
power cable
When connecting boiler on electric installation take
care on connections scheme and connecting plans.
Respect mandatory diameters of cables and fusses
power outside the boiler
This device is manufactured for connection to three-
phase power supply (3N ~ 400/230V 50Hz)
Only devices with nominal power 6kW and 9kW can
be connected to single-phase power supply (1N ~
230V 50Hz)
I set introducers (main set) is on lower side
(below) of device. They are on lower plate of
device in the back left corner (image 6). It is
intended for connecting device when power cable
comes from the lower side of the boiler.
II set introducers is placed on the rear of device
and is used when cables on the wall are prepared
for the boiler. They provide power cable from the
wall to get directly into the boiler. When front lid is
removed, it is visible in lower left side two
openings of dimensions of 28 mm, placed one
above the other. Thismode ofconnecting secures
just aesthetic function because cables are not
visible (image 6).
III set introducers are placed on the top of boiler
in rear left corner (image 6).They are intended for
connecting device when power cable comes from
the upper side of device.
Electric connecting
Ibelow set of cable
introducers
II rear set of cble
introducers
III top set of cable
introducers
Image 6: Illustration of the position of cable introducers on the boiler

WARNING! When connecting phase
conductors
it is demanding to tight well screws
in automatic fusses to achieve better joint
between cable and clamp
DANGER! If there is no good joint between
cable and clamp, then uncontrolled warning of
fusses can occur and its termination at the end
NOTE! Only qualified person may execute
connecting this device
NOTE:
Remote voltage trigger is connected by
manufacturer within safety set of this device
and no cable should be connected with it
5.2 Connecting power (voltage) cable
Commencing should be performed according to the
mounting scheme as given in the image 7
In the boiler, instead of classical row immobilizer are
placed three pole automatic fuses to introduce the power
cable. This set of automatic fuses has remote power
trigger superstructure, enabling safety set having short-
lasting electric power protection and ability to react on
overheating (signal from safety thermostat activates
power trigger) and simultaneously turn off supply of all
three phases into device
Phase conductors are connected tothree-pole fusses (L1,
L2, and L3)
Whenintroducing a power cable into the boiler, through any
selected set of glands, carefully patch the cable to the
three-pole automatic fuses to avoid damaging the cable
sets inside the device
Neutral (zero) duct line is connected to corresponding row
immobilizer (N) which is placed on the right hand side of
the fuses set with voltage trigger. Row immobilizer of zero
duct line is of blue colour
Grounding duct line should be connected in the row
immobilizer clearly labeled with grounding symbol. Row
immobilizer of the duct line for grounding is of green-yellow
colour
NOTE: Room thermostat is connected on
additional clamps (+5V and Signal) and it
interrupts voltage of 5V DC that comes from
boiler table microprocessor
It is recommended to use room
thermostats with independent power
supply like batteries
This boiler is not predicted to work
without room thermostat or external
control unit
When you are finished connecting the power cord and
room thermostat, the fuse set must be lifted together with
the remote voltage trigger before the unit is closed (before
assembling the front panel) to ensure the power supply to
the boiler
Electric connecting
Image 7: Scheme for connecting power cable

5.3 Scheme of power cable connecting
5.4 Connect external control of boiler (room
thermostat)
Electric connecting
Image 10: Connecting scheme of digital programmable
room thermostat (with battery supply )
Image 9: Scheme of boiler connecting on three-phase
power supply
Image 8: Scheme of boiler connecting to single-phase
power supply –ONLY FOR POWER OF 6kW AND
9kW
Image 11: Scheme of room thermostat MIKOTERM
EST 113 R5 connecting
WARNING: Use room thermostat with no-voltage contacts

5.5 Electric schemes of connection
All quoted cross-sections of cables are minimal.
Cross-sections that should be placed depend on
length of the line and placing mode.
Cable cross-sections should be dimensioned according to
local regulations
3P A
Three-pole automatic fuse
DA
Remote power trigger
ST
Safety thermostat (Klixon)
RTH
Room thermostat
RS 1, RS 2, RS 3
Connecting clamps
of room thermostat
WARNING: voltage 5V DC
P1
Main switcher ON/OFF
CP
Circulation pump
RK1, RK2, RK3
Relay contact (for 9,12 and 18kW)
K1, K2, K3
Contact (for 24kW and 27kW)
G1
Heater
-3×1500W for boiler of 9kW
-3×2000W for boiler of 6, 12, 18kW
-3×2667W for boiler of 24kW
-3×3000W for boiler 27kW
G2
Heater
-3×1500W for boiler of 9kW
-3×2000W for boiler of 12, 18kW
-3×2667W for boiler of 24kW
-3×3000W for boiler of 27kW
G3
Heater
-3×2000W for boiler of 18kW
-3×2667W for boiler of 24kW
-3×3000W for boiler of 27kW
LCTR 2
Microprocessor thermoregulator
OS 1
Electric fuse 230V T500mA
OS 2
Electric fuse 230V T2A
OS 3
Electric fuse 24V T500mA
OS 4
Electric fuse 8V T500mA
KON1
Supply connector (230V AC)
KON2
Circulation pump connection
K 101
Pressure sensor connection
SP
Pressure sensor
K 102
Temperature sensor connection
TS
Temperature sensor
K 105
Interface connection (LCI2)
K 106
Room thermostat connection (RTH)
RE 1
- Heater relay (for boiler of 6kW)
- Contact K1 turn on relay (for
boiler of all other power)
RE 2
- Heater relay (for boiler of 6 kW)
- Contact K2 turn on relay (for
boilers of all other power)
RE 3
- Heater relay for boiler of 6kW
- Contact K3 turn on relay (for
boilers of all other power)
Electric connecting
Legend
T a ble 4: Legend of connecting schemes
Legend

Electric connecting
Image 12: Boiler electric scheme eCompact Plus with nominal power of 6kW

Electric connecting
Image 13: Boiler electric scheme eCompact Plus with nominal power of 9kW and 12kW