Centrometal EKO-CK P 20 Owner's manual

HEATING TECHNIQUE
TUCKP-08/2017-E-N-eng
EKO-CK P
Centrometal d.o.o. - Glavna 12, 40306 Macinec, Croatia, tel: [phone], fax: [phone]
TECHNICAL INSTRUCTIONS
for installation, use and maintenance
of hot water boiler
and installation of additional equipment

2Technical instructions EKO-CK P
Technical data
TECHNICAL DATA
(D)
(E)
(F)
(G)
(mm)
(mm)
(mm)
(mm)
1280
1095
1545
930
(A)
(B)
(C)
TYPE
(mm)
EKO-CK P
20
EKO-CK P
25
EKO-CK P
30
EKO-CK P
35
EKO-CK P
40
EKO-CK P
50
14
4,2-14
11
60
170
80
0,011
-
0,294
7
15,6
75,4/330
89,3
985
470
1255
203
227
150
3
20
6-20
12
64
170
80
0,015
-
0,42
9
22,2
80/330
95,5
1020
470
1255
210
234
150
3
25
7,5-25
13
67
170
80
0,018
-
0,368
10
27,8
92,5/330
110,3
1020
520
1255
230
255
160
4
30
9-30
14
76
170
80
0,023
-
0,63
11
33,33
105/330
125,2
1020
570
1255
241
266
160
4
35
10,5-35
15
78
170
80
0,027
-
0,735
13
38,88
116/330
140
1020
620
1255
267
293
180
5
40
12-40
20
96
180
80
0,031
-
0,84
18
44,44
161/330
172
1142
620
1255
310
337
180
5
1280
1095
1545
930
1280
1145
1545
930
1280
1195
1545
930
1280
1245
1545
930
1440
1245
1545
1025
f6 x max.50
Fuel size
Boiler
dimensions
with casing
Lenght
Width
Height
Boiler
connections
Flow and return pipe (male thread)
Charge/discharge (female thread)
Heat exchanger connector (female thread)
Connector of exchanger sensor
(female thread)
Total system dimensions
Total length
Total width
Total height
Uptake tube height
(kW)
(kW)
(Pa)
(lit.)
(°C)
(°C)
(kg/s)
(kg/s)
(kW)
(mbar)
(kW)
(%)
(l)
(mm)
(l)
(lit./kW)
(W)
(V~)
(Hz)
(mm)
(mm)
(mm)
(kg)
(kg)
(bar)
(bar)
(°C)
(mm)
(R)
(R)
(R)
(R)
(pcs)
1/2"
50
15-50
22
118
180
80
0,034
-
0,596
25
55,55
167/330
203,2
1142
620
1355
327
355
180
5
EKO-CK P
60
1440
1245
1545
1025
5
wood pellets
max.12
overpressure
by EN 303-5 point 4.2.5
250
230
50
~
2,5
5,5
90
5/4"
1/2"
1"
Nominal heat output
Heat output range
Boiler class
Required chimney underpressure
Water amount in boiler
Exhaust gas temperature at nominal heat output
Exhaust gas temperature at minimum heat output
Exhaust mass flow at nominal heat output
Exhaust mass flow at minimum heat output
Standby heat losses
Boiler resistance on water side at nominal output
Fuel type
Maximum heat input
Fuel moisture content
Firebox volume /tank volume
Combustion chamber dimensions
Combustion chamber volume
Combustion chamber type
Required minimum accumulation next to boiler
Electrical power input
Supply voltage
Frequency
Current type
Boiler body mass
Total mass - (boiler with casing and accessories)
Max. operating overpressure
Test pressure
Max. operating temperature
Uptake tube - external diameter
Number of turbulators
321x506x550 321x541x550 371x541x550 421x541x550 471x541x550 471x664x550 471x664x650
EKO-CK P
20
EKO-CK P
30
EKO-CK P
25
EKO-CK P
35
EKO-CK P
40
EKO-CK P
50
EKO-CK P
60

3
Dimensions
Technical instructions EKO-CK P
0
1
08:42
OF F
TM
GV
DV
B
E
A
D
DP
OC
PVV
PR
PVL
PC
TU
TO
DP
U
OC
PVV
PR
C
CE
ZA
GR
U
TP
CD
F
1
3
4
5
Pellet tank CPSP can be
positioned on the left side
Of the boiler (in this case
is necessary to turn supply
tube for pellet loading on the
burner CD for 180°).
NOTE:
2
The boiler EKO-CK P with equipment for wood pellets firing (Cm Pelet-set)
LEGENDE:
1- Boiler EKO-CK P
2- Pellet burner CPPL
3- Pellet control unit CPREG
4- Pellet tank CPSP
5- Feeder screw CPPT
Cm Pelet-set:
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
DV
GV
TM
PRA
PVV
OC
DP
PVL
TU
PC
U
TO
TP
ZA
GR
CE
CD
Lower boiler door
Upper boiler door
Thermometer
Filling / drainage
Outlet line
Cleaning opening
Chimney connection
Inlet line
Sensor sleeve
Plastic flexible pipe
Socket of the pump thermostat
Thermal protection connectors
(not used on boiler with installed
Cm Pelet-set)
Pump thermostat
Poker
Scraper
Cleaning brush
Supply tube for pellet loading

General, boiler description, delivery, additional equipment
4Technical instructions EKO-CK P
1.0. GENERAL
The boiler EKO-CK P is steel hot water boiler. The combustion chamber has a large heating
surface and low combustion chamber resistance. Boiler cleaning is very simple and it is possible to
clean it from the front side.
1.1. BOILER DESCRIPTION
1.2. DELIVERY STATE
1.3. OBLIGATORY ADDITIONAL EQUIPMENT OF THE BOILER EKO-CK P
FOR WOODEN PELLETS FIRING
1. For boilers: EKO-CK P 20
- pellet burner CPPL-14 digital boiler control unit CPREG for pellet burner
CPPL-14
- pellet tank CPSP
- pellet feeder CPPT
2. For boilers: EKO-CK P 25, EKO-CK P 30, EKO-CK P 35 and EKO-CK P 40
- pellet burner CPPL-35, digital boiler control unit CPREG for pellet burner
CPPL-35
- pellet tank CPSP
- pellet feeder CPPT
3. For boilers: EKO-CK P 50 and EKO-CK P 60
- pellet burner CPPL-50, digital boiler control unit CPREG for pellet burner
CPPL-50
- pellet tank CPSP
- pellet feeder CPPT-50
The boiler EKO-CK P has a modern construction and design and is made out of the
controlled materials of high quality, welded with most modern technology and is approved and
tested under EN 303 - 5 norm and fulfil all special request for the connection on the installation of a
central heating system.
The boiler with boiler door is delivered on a wooden pallet, with turbulators in combustion
chamber, cleaning accessoris (poker, scraper and holder for cleaning accssories) and set (sheet
metal screws, screws and plug).

2.0. BOILER POSITIONING AND ASSEMBLY
Boiler positioning and assembly
5
Boiler positioning and assembly and building in must be performed by a qualified person. We
recommend that boiler is placed on a concrete base having height of 50 to 100 mm above the
floor. Boiler room must be frost-proof and well ventilated. Boiler has to be positioned so that it can
be properly connected to the chimney (see point 4.0) and simultaneously, enabling tending of
boiler and additional equipment, control during operation, and cleaning and maintenance (see
Figure 1).
WARNING!
Flammable items must not be placed on the boiler and within the safety distances shown
in Figure 1.
Technical instructions EKO-CK P
min. 1000 mm
min. 1500 mm
min. 100 mm
min. 300 mm max. 600 mm
min. 750 mm
1
2
3
4
5
6
3
4
Pellet control unit CPREG
Pellet feeder CPPT
-
-
5
6
Pellet tank CPSP
Chimney
-
-
1
2
Boiler EKO-CK P
Pellet burner CPPL
-
-
Legend:
Figure 1. Minimum distance from the room walls

Changing of door opening direction
2.1 CHANGING OF DOOR OPENING DIRECTION
6Technical instructions EKO-CK P
Lower boiler door which opens
to the right side (default).
Figure 2. Figure 3.
Lower boiler door readjusted for opens
to the left side.
Handle
1
1
3
2
2
Microswitch breaker
3
4
Hinge
Handle latch holder
(on the boiler)
4*
*
Only on lower boiler door.
*
Figure 4. Universally door parts needed to install on opposite side to change the door
opening direction
Upper and lower boiler door are factory designed so that it can be changed opening direction to left
or right side. Opening direction can be changed. It is neccesary to change positions of universally
parts responsible for direction of door opening. Universally parts are shown in figure 4. Handle,
hinge and handle latch holder are universlly parts which holde upper and lower boiler door. Lower
boiler door have one additional piece (microswitch breaker) which position must be changed. Door
are default mounted to open on right side. On page 7 are shown how to change direction of door
opening on lef side.
Procedure are same for upper and lower boiler door except microswitch on lower boiler door.

7
3
9
95
5
5
5
7
7
6
8
4
2
1
6
4
2
4
7
7
28
1
Technical instructions EKO-CK P
Changing of door opening direction
The procces of converting factory delivered lower boiler door with right opening
direction (default) to door with left opening direction.
1. Removing door from boiler and remove universally parts from door
Unscrew two screws (5) and remove door from boiler. Strike out elastic pins and remove handle (1)
and hinge (2) from boiler door. Unscrew screw (8) and remove microswitch breaker (4).
2. Installing universally parts to the other side
Move handle (1) as shown in Figure and fasten it with elastic pin (6). Move hinge (2) as shown in
Figure and fasten it with 2 elastic pins (7). Move microswitch breaker (4) and fasten it with screw (8).
3. Installing of handle latch holder and door to boiler
Handle latch holder must be rotated
on position with slot up.
Unscrew two screws (9) and take out handle latch holder (3). Put handle latch holder as shown
in Figure (must be rotated on position with slot up). Handle latch holder is always on the the
side wher is handle. Put door on the boiler and fasten it with screws (5).

Installation of casing
8
10
3
7
5
1
4
2
8
b1
b2
8
b3
b4
b5
b6
6
9
X
B
B
BB
AA
BB
C
C
AA A
Detail X
(4.2x32)
B
(3.9x9.5)
C
(4.2x16)
A
Figure 5. Installation of casing to boiler EKO - CK P
Technical instructions EKO-CK P
Fasten insulation support (8) with screws 4,2 x 16 into wholes at the upper side of the
boiler body.
Fix the lateral sides (2) and (3) on girders on the lateral sides of the boiler mount into
rectangular opening of the casing lateral sides (b1) and (b2), hook them up on casing
supports (8), and fix them with two screws on sheet metal 3.9 x 9,5 on the rear casing
supports (8).
The front upper casing side (5) has to be hooked up with hooks into rectangular
openings of the lateral left and lateral right side of the casing (b5) and (b6), and fixed
with one screw on sheet metal 4,2 x 16 into the front casing support (8) through the
lateral side (2) and with one screw for sheet metal 4,2x16 into the front casing support
(8) through the lateral side (3).
The front bottom casing side (4) has to be hooked up with hooks into rectangular
openings of casing lateral sides (b3) and (b4).
We insert the thermometer sensor at the front upper side of the casing (5) and pump
thermostat sensor at the rear casing cover (9) into the probe at the upper side of the
boiler, and secure the sensors with wire delimiter supplied in the set (Detail Y).
We position the front casing cover (6) on the groove of the front upper casing side, and
the rear casing cover (9) on the groove of the front casing cover (6).
We hook the rear casing side (1) on the connecting pipe and fix it with 2 screws for
sheet metal 4,2 x 32 on the lateral side (2) and 2 screws for sheet metal 4,2 x 32 on the
lateral side (3).
We fix the rear casing cover (6) from the upper side with 2 screws for the sheet metal
4,2 x 32 on lateral casing sides (2) and (3).
At the end, we fix the draught regulator protection (7) on the front upper casing side (5)
on the prefabricated holes with three sheet metal screws 3,9 x 9,5.
Finally, we take the base protection (10) and insert it under the boiler between the
supports holding the boiler.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.

Opening for fresh air, connection to chimney
9
Technical instructions EKO-CK P
4.0. CONNECTION TO CHIMNEY
3.0. OPENING FOR FRESH AIR (FRESH AIR SUPPLY)
Q - boiler output in kW
2
A - opening area in cm
A = 6,02 Q
Each boiler room must be equipped with an opening for supply of fresh air which is dimensioned
in accordance with boiler output (minimum opening area according to the below shown equation).
Such opening must be protected with a net or grate. All installation works have to be performed in
accordance with valid national and European standards. Boiler must not operate in flammable and
explosive environment.
Properly dimensioned and built chimney is a precondition for safe boiler operation and heating
efficiency. A chimney must be thermally insulated, gas-tight and smooth. Cleaning door must be
made in the lower part of a chimney. Chimney made of bricks must include 3 layers with central
insulation layer made of mineral wool. Thickness of thermal insulation should be min. 30 mm of
chimneys is built against to interior wall, and min. 50 mm if it is built on the outer side. Internal
dimensions of the chimney light diameter depend on chimney height and boiler output and
they have to be selected in accordance with diagram shown in Figure 3. The chimney usable
height is the measure from connection spot of smoke pipe to the chimney top. As these boilers can
be fired with wooden pellets at any time, chimney has to be selected according to the wooden
pellets diagram. Fuel gas temperature at the chimney exist must be min. 30°C higher than
condensation temperature of combustion gases. Selection and building of a chimney must be
made by a professional. Required maximum distance from boiler to chimney is 600 mm, and
minimum distance is 300 mm. Uptake tube must be installed at an angle (min. 5°) with a gradient
from chimney to boiler (Figure 2). In order to prevent condensate from chimney to enter the boiler,
uptake tube must be placed 10 mm deeper into chimney. Connecting uptake tube between boiler
and chimney must be thermally insulated with a mineral wool layer having thickness of 30 to 50
mm.
All installation works must be made in accordance with valid national and European standards.

Connection to chimney, selection of a chimney
10 Technical instructions EKO-CK P
min. 300 mm
max. 600 mm
10mm
10
15
20
25
30
35
40
45
50
60
70
80
90
100
110
5 10 15
wood pellets
firing
18
20
22
25
30
35
6 7 8 9
Figure 2. Possible ways of connections of boilers EKO-CK P to chimney
Thermal insulation
Opening for cleaning
Thermal insulation
Opening for cleaning
Possible way of connection of boilers EKO-CK P to chimney
(recommendation)
Possible way of connection of boilers EKO-CK P
with pellet burner to chimney
Figure 3. Chimney dimensioning for boilers EKO-CK P
Useful chimney height (m)
Boiler nominal output (kW)
Light chimney diameter (cm)

Installation to closed heating system
11
Technical instructions EKO-CK P
5.0. BOILER INSTALLATION TO CENTRAL HEATING SYSTEM
5.1. BOILER INSTALLATION TO CLOSED HEATING SYSTEM
4.1. AN EXAMPLE OF SELECTION OF A CHIMNEY (see diagram on
Figure 3.)
- BOILER HEAT OUTPUT - 30 kW
- FUEL - WOOD PELLETS
- REQUIRED USABLE CHIMNEY HEIGHT - H = 8 m
- REQUIRED CHIMNEY LIGHT DIAMETER - 18 cm
- Usable chimney height - chimney height from connection spot of smoke pipe
to the chimney top.
- Light chimney diameter - interior chimney diameter.
All installation works must be made in accordance with valid national and European standards.
Boiler EKO-CK P can be built to closed and open central heating systems. In both cases boiler can
be fired with wooden pellets. Installation has to be made, in according to technical standards, by a
professional who will be responsible for proper boiler operation. Before connecting boiler to
central heating system, the system has to be flushed to remove impurities remaining after system
installation. It prevents boiler overheating, noise within the system, disturbances at a pump and
mixing valve. Boiler should always be connected to central heating system by connectors, never
by welding. Figure 1. shows safe distances required for boiler cleaning and maintenance.
In closed heating system (as in example shown in Scheme 1a and 1b) it is obligatory to build in
certified safety valve with opening pressure of 2,5 bar, minimum seat diameter of 15 mm, minimum
inlet connection of 1/2", minimum exit connection of 3/4" and a membrane expansion vessel.
Safety valve and expansion vessel must be built in accordance with professional rules and any
valve must not be located between safety valve and expansion vessel and boiler. In all boiler types
the heating pump must be connected to boiler control unit CPREG (see Technical instructions for
the commissioning and adjustment of Cm Pelet-set for boilers EKO-CK P and EKO-CKB P). If
boiler is connected to the heating system under Diagram 1b., it is recommended that the
environment temperature control is made by a 4-ways manual mixing valve.

Installation to closed heating system
12
bar
4
bar
1
3
7
1
2
1
2
T
6
5
8
9
9
0
1
08:42
OF F
Installation of boiler EKO-CK P to closed heating system
Scheme 1a. An example of building in of accumulation tank into the
central heating system required under EN 303-5
Scheme1b. An example of building in of
accumulation tank into the central
heating system not required under
EN 303-5
Technical instructions EKO-CK P
1
5
3
4
2
6
7
8
9
-Obligatory installation of air self-
venting group (safety valve 2,5 bar)
-Room thermostat
-Manual 3-ways mixing valve
-Thermometer
-Thermostat valve-Temperature of
return line min. 60°C
-Close tightly
-Manual 4-ways mixing valve
-Accumulation tank (CAS)
-Closed-type expansion vessel

Installation to open heating system
13
5.2. BOILER INSTALLATION TO OPEN HEATING SYSTEM
OPC
1
9
4
2
5
8 3
7
OPC
9
2
T
6
1
If boiler is installed in an open central heating system, it is recommended that system is made
according to Scheme 2a or 2b. In open system it is necessary to put an open expansion vessel
above the height of the highest heating body. If expansion vessel is located in a room without
heating, it should be insulated. The system pump could be connected on the inline or back line of
the boiler. The heating pump connected to boiler control unit CPREG (see Technical must be
instructions for the commissioning and adjustment of Cm Pelet-set for boilers EKO-CK P and
EKO-CKB P). If boiler is connected to the heating system under Diagram 2b., it is recommended
that the environment temperature control is made by a 4-ways manual mixing valve.
Scheme 2a. An example when building in of accumulation tank into the central heating
system required under EN 303-5
Example of installation of boiler EKO-CK P in an open heating system
ABOVE THE HIGHEST HEATING BODY
To boiler
room
Scheme 2b. An example when building in of accumulation tank into the central heating system is not
required under EN 303-5-5
To boiler
room
ABOVE THE HIGHEST HEATING BODY
Technical instructions EKO-CK P
1
2
3
4
5
6
8
7
9
-boiler EKO-CK P
-close tightly
-manual 3-ways mixing valve
-manual 4-ways mixing valve
-thermostat valve-ensures temperature
in return pipe min. 60°C
-accumulation tank (CAS)
-room thermostat
-open expansion vessel OPC
-thermometer

Mounting of additional equipment, control of boiler temperature, electric connection
14
6.0. MOUNTING OF OBLIGATORY ADDITIONAL EQUIPMENT WOODEN
PELLETS FIRING
7.0. CONTROL OF BOILER TEMPERATURE
8.0. CONNECTING BOILER TO ELECTRICAL INSTALLATIONS
Technical instructions EKO-CK P
For each boiler EKO-CK P intended for wooden pellets firing need to be further mounted Cm
Pelet-set (pellet burner, pellet control unit, pellet feeder, pellet tank). For details see Technical
instructions for the commissioning and adjustment of Cm Pelet-set for boilers EKO-CK P and
EKO-CKB P.
If the supply cable of Cm Pelet-set control unit (CPREG), supply cable between control unit
(CPREG) and pellet feeder (CPPT) or supply cable between control unit (CPREG) and burner
(CPPL) is damaged, replacement can be done only by manufacturer, authorized serviceman or
qualified persons in order to prevent possible danger.
Temperature in boiler is controlled by a digital boiler control unit CPREG which need to befurther
mounted (with pellet burner, pellet feeder and pellet tank). For detailed description of boiler control
unit CPREG see Technical instructions for use and maintenance of Cm Pelet-set for boilers EKO-
CK P and EKO-CKB P supplied with wooden pellet firing set.
All electrical works must be performed by a certified professional in accordance with valid national
and European standards.
A device for switching of all power supply poles must be installed in electrical installation in
accordance with the national regulations on electrical installations.
If the supply cable of Cm Pelet-set control unit (CPREG), supply cable between control unit
(CPREG) and pellet feeder (CPPT) or supply cable between control unit (CPREG) and burner
(CPPL) is damaged, replacement can be done only by manufacturer, authorized serviceman or
qualified persons in order to prevent possible danger. For detailed description of electric
connection see Technical instructions for the commissioning and adjustment of Cm Pelet-set for
boilers EKO-CK P and EKO-CKB P.

Start up
15
9.0. START UP
Figure 8. - Movable parts of the boile
Lower lid
Upper lid
Turbulators
Ash tray
Protective gloves are obligatory!
Figure 9. Protective gloves
Technical instructions EKO-CK P
Boiler must not be used in flammable and explosive environment.
It must not be used by children or disabled persons (either physically or mentally), as well as by
person without knowledge or experience, unless they are under control or trained by s person
responsible for their safety. Protective gloves are obligatory (Figure 5.). Check whether boiler and
equipment are installed and connected in accordance with these Technical instructions including
all points from 1.0 to this 8.0. Check whether chimney meets requirements of point 4.0 therein.
Check whether boiler room meets all requirements therein. Check if fuel fulfils all requirements
therein. Check whether the boiler and the entire heating system are filled with water and vented.
Check whether safety elements have been correctly installed and in proper working order (see
previous points of instructions). Check whether flue gas tube is sealed and thermally insulated.
Check whether movable parts are placed to foreseen positions (upper lid, lower lid, turbulators in
flue gas tubes grate of burner, ash tray) Figure 4.
Check whether all parts of pellet firing set are properly assembled and installed. Check whether
boiler control unit CPREG is connected to power supply and whether all openings at boiler are
closed tightly. For proper boiler operation it is necessary to set correctly control unit CPREG
according to the boiler size and required output and to select pellets having properties given in point
10.0. Detailed description is given in Technical instructions for the commissioning and adjustment
of Cm Pelet-set for boilers EKO-CK P and EKO-CKB P and Technical instruction for pellet tank and
screw feeder supplied with equipment for firing with wooden pellets.

Process of opening the boiler door
16
Figure 10. Boiler door opening method
-
-
-
-
GV
DV
RGV
RDV
Upper boiler door
Lower boiler door
Handles of upper boiler door
Handles of lower boiler door
GV
RGV
DV
RDV
Open
Left
Close
Right
Technical instructions EKO-CK P
PROCESS OF OPENING BOILER DOOR:
UPPER BOILER DOOR:
1. Pull the handle of the upper boiler door RGV in direction of the arrow "OPEN".
2.Open the upper boiler door GV in direction of the arrow "RIGHT".
LOWER BOILER DOOR:
Lower boiler door - allowed to open only when the burner is not working ( OFF is
displayed in the upper display or control unit is OFF on main switch (0)).
1. Pull the handle of the lower boiler door RDV in direction of the arrow "OPEN".
2.Open the lower boiler door DV in direction of the arrow "RIGHT".
PROCESS OF CLOSING BOILER DOOR:
UPPER BOILER DOOR:
1. Pull the handle of the upper boiler door RGV in direction of the arrow "OPEN".
2. Press upper boiler door GV in direction of the arrow "LEFT".
3. Press the handle of the upper boiler door RGV in direction of the arrow "CLOSE".
LOWER BOILER DOOR:
1. Pull the handle of the lower boiler door RDV in direction of the arrow "OPEN".
2. Press lower boiler door DV in direction of the arrow "LEFT".
3. Press the handle of the upper boiler door RDV in direction of the arrow "CLOSE".

Properties of wooden pellets, boiler use
17
10.0. PROPERTIES OF WOODEN PELLETS
11.0. BOILER USE
Technical instructions EKO-CK P
Wooden pellets are used as fuel in boilers with built-in pellet burner CPPL. Wooden pellets are bio-
fuel made of wooden wastes. Pellets can be packed in different packaging: in bags (15 kg or 1000
3
kg), or as bulk in large (underground) tanks ( 4 - 15 m ) or in basement spaces. Recommended
properties of pellets for firing in EKO-CK P boilers are the following:
- heating value >= 5 kWh/kg (18 MJ/kg)
-diameter <= 6 mm
-max. moisture content <= 12 %
-max. dust content <= 1,5 %.
Boiler must not be used in flammable and explosive environment.
It must not be used by children or disabled persons (either physically or mentally), as well as by
person without knowledge or experience, unless they are under control or trained by s person
responsible for their safety. Protective gloves are obligatory (Figure 9.). Check whether boiler and
equipment are installed and connected in accordance with these Technical instructions including
all points from 1.0 to this 8.0. Check whether chimney meets requirements of point 4.0 therein.
Check whether boiler room meets all requirements therein. Check if fuel fulfils all requirements
therein. Check whether the boiler and the entire heating system are filled with water and vented.
Check whether safety elements have been correctly installed and in proper working order (see
previous points of instructions). Check whether flue gas tube is sealed and thermally insulated.
Check whether movable parts are placed to foreseen positions (upper lid, lower lid, turbulators in
flue gas tubes grate of burner, ash tray) Figure 4.
Check whether all parts of pellet firing set are properly assembled and installed. Check whether
boiler control unit CPREG is connected to power supply and whether all openings at boiler are
closed tightly. For proper boiler operation it is necessary to set correctly control unit CPREG
according to the boiler size and required output and to select pellets having properties given in point
10.0. Detailed description is given in Technical instructions for the commissioning and adjustment
of Cm Pelet-set for boilers EKO-CK P and EKO-CKB P and Technical instruction for pellet tank and
screw feeder supplied with equipment for firing with wooden pellets.

Cleaning and maintenance
18
12.0. CLEANING AND MAINTENANCE OF THE BOILER AND EQUIPMENT
FOR WOODEN PELLETS FIRING
Technical instructions EKO-CK P
Ash remaining in boiler after solid fuel firing should be disposed into metal containers with a cover.
Protective gloves must be used (Figure 9).
Care should be taken of: - Ash amount in ash trash and to empty it as required;
- Deposits in boiler firebox and to clean it as required;
- Deposit at burner grate and to clean it as required;
- Ash amount in the ash tray empty it as required
Cleaning:
First, main switch at boiler control unit has to be turned off.
The combustion chamber can be cleaned through upper and lower boiler door.
Open upper boiler door,take upper lid out, take turbulators out and clean flue gas pipe using
supplied scraper. Open lower boiler door (with burner on it) and clean the combustion chamber,
empty ash tray and clean the burner grate.
It is recommended to clean the burner and boiler combustion chamber after one pellet tank is
consumed (approx. 200 kg).
Intervals between cleaning can be increase or decrease in relation to the recommended ones, as
needed, and it depends on quality of used pellets (see 10.0) and turning on/off frequency of the
burner. For maintenance and cleaning of equipment for pellet firing see Technical instructions for
use and maintenance of Cm Pelet-set for boilers EKO-CK P and EKO-CKB P and Technical
instructions for pellet tank and screw feeder.

Mounting of turbulators
19
13.0. MOUNTING OF THE TURBULATORS
Figure 11. - Take of movable lids from combustion chamber
Figure 12. Mounting of turbulators
Technical instructions EKO-CK P
2
3
1
4
5
1
2
3
-
-
-
-
-
-
-
Upper lid
Lower lid
Upper boiler door
Upper register
Flue gas pipe
Turbulators
Lower register
4
5
7
6
6
7
By wooden pellets firing turbulators must be mounted in the flue gas pipes. To mounting the
turbulators is necessary to open upper boiler door, take out upper lid (position 1) (Figure 11.).
Then, insert the turbulators into the flue gas pipes and push to the end (see figure 12.). After that,
back in upper lid.
4
3
2
1-
-
-
-
-
Boiler EKO-CK P or EKO-CKB P
Upper boiler door
Flue gas pipe
Turbulators
Upper lid
5

Notes
HEATING TECHNIQUE
www.centrometal.hr
e-mail: [email protected]
Centrometal d.o.o. Glavna 12, 40306 Macinec, Croatia
central tel: [phone], fax: [phone]
servce tel: [phone], fax: [phone]
Centrometal d.o.o. shall not be responsible for possible incorrect data caused by printing errors or error made in transcription and all figures and diagrams are for explanatory purposes only and relevant
adjustment have to be made at the spot. In any case, it reserves the right to modify its products as deemed to be required and useful without any prior notification.