Centrometal El-Cm Classic Owner's manual

El-Cm Classic
Technical instructions
HEATING TECHNIQUE
Centrometal d.o.o. - Glavna 12, 40306 Macinec, Croatia, tel: [phone], fax: [phone]
for installation, handling and maintenance
of electric block-boiler for heating systems with thermoregulatory microprocessor

CONTENT
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 Dimensions and 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 Installation filling with water and waterproof testing
4.6.1 Filling the boiler with water and testing sealing
4.6.2 Heating pump air emission and de-blocking
4.6.3 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 Modifying elements
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. Instructions for design

Description of symbols and instructions for safe work
1. Description of symbols and instructions for safe work
1.1 Description of symbols 1.2 Instructions for safe work
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
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!


Description of symbols and instructions for safe work
Life threat of electric power shock
 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 only original 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 :
El-Cm El-Cm Classic
6 - 27k W
2.2.1 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).
2.2.2 Regular application
The boiler can be used only for heating the water for heating
system 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.
 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!
2.3 Instructions for mounting
2.5
Inhibitors and anti-frost products
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
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
• Changes on the place of mounting according
To valid regulations




Device data
2.6 Norms, regulations and standards
This product is in compliance with the following regulations:
• E N 50110 - 1:2003 – Handling and work with
electrical installations
• E N 55014:2001 – Electrical-magnetic compatibility –
conditions for consumers’ devices for households, electric
devices and similar devices
• E N 60 335 - 1 + e d .2:2003 Electric devices for
households
• E N 60 335 - 1 + e d .2 z m . A 1:2005 Electric devices for
households
• E N 61000 - 3 - 2 e d .3:2006 Electrical-magnetic compatibility
( E M C ) – emission limits for harmonic power
• E N 61000 - 3 - 3:1997 Electrical-magnetic compatibility ( E M C )
– Law on determination of fluctuation of voltage and frequency
of low power distributive network
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
.

Device data
2.8
Minimum distances and burnable
construction materials
2.9 Product description
Basic components of boiler :
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 , H OB REX , V ER S A L I T and
U M A K A R T plates
B 2:
Normally
inflammable
Pine , larch and spruce ,
veneered wood
B 3: Inflammable A s pha l t , cardboard, c e l lulose
m a t e r ials, t a r- p a p e r , plywood
plates , cork plates,
polyurethane , polystyrene,
p o l y e thy l e n e, floor fibre
materials
T a ble 2: Ign itable materials and composition of elements
according to
D I N 4102
• Boiler body
• Device frame and casing
• Control unit
• P u m p
• Expansion dish ( per capacity )
• Processor board and boiler electronics
• Water pressure sensor
• Safety valve
Boiler can be installed as integral part of the central
heating system, floor heating, hybrid, or accumulation
systems.
Boiler is compounded of weld housing of steel tin with thermal
insulation. The boiler is fixed on the wall by supplied mounting set.
Installed heating insulation in boiler jacket reduces loss of the heat,
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 2.13.2).

Device data
1 U L Return boiler’s line
2 I Z Start boiler’s line
3 Boiler’s exchanger
4 Electric heaters
5 Expansion dish
6 Circulating pump
7 Vent valve ( on pump )
8 Safety valve ( on pump )
9 Drain faucet
10 Automatic air vent
11 Automatic fuses with voltage trigger
12 Terminal for room thermostat
13 Microprocessor plate
14 Electric heaters contacts
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 D rainage hose of safety valve
Figure 1: Open device view

Device data
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 boiler stick to the following:
 Check if packaging is damaged during delivery.
 Check if delivery is complete.
Part Pieces
Boiler El-Cm Classic 1
Assembly Set 1
Instructions for handling 1
2.12 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
2.13 Dimensions and technical data
2.13.1 Dimensions and technical data for boiler El-Cm El-Cm Classic
Figure 2: Dimensions and connections

Device data
2.13.2 Technical data
Power
Usability level
Number of power grades
Division of power grades
Unit CVM - 6 CVM - 9
KW 6 9
% 99 99
3 3
3 × 2 3 × 3
CVM - 12 CVM - 18 CVM - 24 CVM - 27
12 18 24 27
99 99 99 99
3 3 3 3
3 × 4 3 × 6 3 × 8 3 × 9
Network voltage
Protection level
Needed fuses
V AC 3 N ~ 400 / 230V 50 H z
I P 40
A
16 20 25 32 40 50
Min diameter of input cable
Safety valve
Max allowed
working pressure
Min allowed
working pressure
Max boiler
temperature
Water volume in
boiler
Expansion dish
volume
Connection of start
line
Connection of return
line
Device mass
( without water )
mm² 5 × 2.5
Bar
Bar
Bar
°C
l
l
K
g 23
5 × 2.5 5 × 4 5 × 4 5 × 6 5 × 6
3
2, 6
0, 4
80
12, 5
8
DN20 ( 3 / 4 ”)
DN20 ( 3 / 4 ”)
24 24 25 25 25
D i m e n sions mm
Microprocessor Unit
Table
3 : Technical dataof El-Cm El-Cm Classic Device
7 710 × 430 × 230 ( Height × Width × Depth )
EK_CPU_LCTR1

T r a n s p o r tation
3. T r a n s p o r tation
N OTE : T ransport damages
 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.

In s t a llation
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 area or at the place of bath.
N OTE : Material damage due to freezing !
 Boiler 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 boiler
.
 Let know the user the valid regulations for
minimum distances from burnable materials
(Section 2.8, p.7)
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
• 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 Figure 3.
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.
S
l
i
k
S
l
Figure3
: Minimum distance during installation
A = 500 mm / B = 50 mm / C = 200 mm / D = 500 mm

In s t a l lation
4.3 Demounting front boiler casing 4.4 Mounting boiler
Boiler casing can be removed for simple handling and
installation.
 Unscrew 3 bolts at top lid
 Unscrew 3 bolts at bottom lid .
 With slow pulling toward you demount front casing of the
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
(Figure 3) .
 Drill holes upon dimensions given in Figure 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
Figure 4: Opening the boiler ( Demounting front casing )





Installing
4.5
Hydraulic attachments execution
NOTE: Material damages caused by
permeable connections
!
 Attachment duct lines install without connecting
on boiler 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 I N .
 Connect start line on connection O U T .
 Check pre-pressure of expansion dish
 Open faucet for filling and exhausting
 Fill the boiler slowly; watch pressure on display (Figure 5):
4.6 Filling 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)
4.6.1 Filling the boiler with heating water and sealing
test


Waterproof 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 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 E N 1717
Figure 5 Display with marked pressure
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
When working pressure is reached close the faucet.
 Use vent valve to air vent the boiler (   Figure 5 and Figure 6 ) .
 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
.



Installation
 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
4.6.2 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.
When heating pump is blocked do the following :
 Carefully try to release axis using screwdriver
4.6.3 Boiler and installation air emission
 Carefully, using screw on air vent cup release the
valve and air vent the boiler. This valve is automatic
so, if respect the rule of slow filling of installation
and boiler, additional manual air-vent will not be
needed.

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 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
)
5.1 Positions of introducer for the introduction of the power cable
Figure
6 Illustration of the position of cable introducers on the boiler
I below set of cable
introducers
II rear set of cble
introducers
III top set of cable
introducers

Electric connecting
This device is equipped with three (3) sets of
introducers for power cable
.
I s e t introducers ( main s e t ) is on lower side (below) of
device. They are on lower plate of device in the back left
corner (See Figure 6). It is intended for connecting device
when power cable comes from the lower side of the boiler.
II s e t 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. This mode of connecting
secures just aesthetic function because cables are
not visible (See Figure 6).
III s e t introducers are placed on the top of boiler in rear
left corner (See Figure 6) they are intended for
connecting device when power cable comes from the
upper side of device.

Electric connecting
5.2 Connecting power (voltage) cable
- Commencing should be performed according to the
mounting scheme as given in the Figure7
.
- 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.
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 to three-pole fusses ( L 1, L 2, and
L3
)
WARNING
! When connecting phase conductors;
- 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 : Remote voltage trigger is connected by
manufacturer within safety set of this device
and
no cable should be connected with it
NOTE : Room thermostat is connected on additional
row immobilizers (5V IN) and it interrupts voltage of
5V DC that comes from boiler table microprocessor.
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.
- 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
Figure 7: Scheme for connecting power cable
- When connect power cable into the boiler through any of - When connect power cable and room thermostat, it is
Three selected introducing sets carefully pull the cable necessary, prior to closing device, or prior
To three-pole fuses avoiding to damage to mount front casing, to lift fusses set together with
Cable sets within device. Remote power triggers in order to secure power
NOTE! Only qualified person may execute supply into boiler.
This device connecting