Centrometal PelTec-lambda 24, PelTec-lambda 12, PelTec 36, PelTec-lambda 36, PelTec 48 Technical Instructions

PelTec 12-48

PelTec-lambda 12-48

TECHNICAL INSTRUCTIONS

for installation, use and maintenance
of hot water boiler
and installation of additional equipment

THE FIRST START-UP MUST BE DONE B Y AUTHORIZED PERSON
OTHERWISE PRODUCT WARRANTY IS N O T VA LID

HEATING TECHNIQUE

Centrometal d.o.o. - Glavna 12, 40306 Macinec, Hrvatska, tel: [phone], fax: [phone]

2

Technical instructions PelTec-lambda

Technical data

TECHNICAL INFORMATION

Dimensions of the boiler to enter the room

Width (G)
Depth (H)
Height (I)

650
765

1565

880
765

1275

880
735

1345

965
795

1345

965
795

1495

** possible way of installing the fan (output is directed up) *** possible way of installing the fan (output is directed sideways)

HG

I

G

I

G

I

12 kW 18 kW

24 kW

48 kW36 kW

12 kW 24-48 kW18 kW 12-48 kW

Tip

(A)
(B)
(C)

(kW)
(kW)

(mbar)

(lit.)
(°C)

(°C)
(kg/s)
(kg/s)

(h)
(°C)
(°C)
(°C)
(W)

(mbar)

(%)

(mm)

(lit.)

(mm)

(lit.)

(lit.)
(lit.)

(W)
(W)

(V~)

(Hz)
(mm)
(mm)
(mm)

(kg)

(bar)
(bar)

(°C)
(mm)
(mm)
(mm)
(mm)

(R)
(R)

12

3,6-1 2

5

0,05

78
120
100

0,013 1
0,000 5

-

-

65-90

5

0,942

465x3 00x300

41,85

9,9 / -

1050

1105
1200
1560

328

130

1515 / 12 35

135
555

1"

1/2"

18

5,4-1 8

5

0,05

76
120
100

0,016 4
0,002 9

-

-

65-90

9

1,59

650x3 00x300

58,5

6,5 / 9,9

1050

1105
1420
1560

349

130

1040 / 76 5

125
510

1"
1/2"

24

7,2-2 4

5
0,05
100
120
100

0,019 7
0,005 2

-

-

65-90

> 0°C

13

C1, woo d pellets

maxim um 12 %

Ø6 x 50

1.59

650x3 00x300

58.5

under pressur e

340

9,9 / 9.9

by EN 303 -5, point 4 .2.5

1050

220

50
1080
1400
1560

402

2.5
5

90

130

1140 / 8 55

130
495
5/4"
1/2"

with fa n

under n on-cond ensing conditi ons

36

10,8- 36

5
0,05
108
120
100

0,031

0,009 2

-

-

65-90

10

2,56

620x3 85x385

91,90

11,6 / 1 7,7

1100

1160
1485
1560

455

150

1160 / 8 55

120
555
5/4"
1/2"

48

14,4- 48

5

0,05

135
120
100

0,041

0,013 1

-

-

65-90

14

2,56

770x3 85x385

114, 13

13 / 19,6

1100

1175
1485
1560

478

150

1310 / 99 5

115

555
5/4"
1/2"

PelTec /

PelTec-lambda

12

PeTec /

PelTec-lambda

18

PelTec /

PelTec-lambda

24

PelTec /

PelTec-lambda

36

PelTec /

PelTec-lambda

48

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 minimal heat output
Exhaust mass flow at nominal heat output
Exhaust mass flow at minimal heat output
Combustion period
Min. inlet water tem. at the boiler supply water connection
Setting range for temperature controller
Minimal return temp.at boiler return tapping
Standby heat losses
Boiler resistance on water side at nominal output
Fuel type
Fuel moisture content
Fuel size
Firebox volume
Combustion chamber dimensions
Combustion chamber volume
Combustion chamber type
Pellet tank volume
Volume of ash boxes (left / right)
Required minimum accumulation next to boiler
Auxiliray power requirements at Q

N

Auxiliray power requirements at Q

min

Supply voltage
Frequency

Total mass - (boiler with tank and feeder screw)
Max. operating overpressure
Test pressure
Max. operating temperature
Flue gas tube - external diameter
Dimension D**/D***
Dimension E
Dimension F

Heating appliance running
Heating appliance running

Boiler body
dimensions

Lengh t
Width
Heigh t

Boiler
connections

Flow and return pipe (male thread)
Charge/discharge (female thread)

3

Dimensions and basic parts of the boiler

PLV - Boiler flow
PVV - Boiler return
PP - Charge / Discharge
DP - Flue gas tube
VE - Fan (fan output can be mounted in any directions)
SP - Pellet tank
PT - Pellet feeder

RP - Pellet level sensor
SG* - Safety ventilation group (not included in delivery)
PG - Pump group
PE - Connection for expansion vessel
FC - Flexible PVC tube

* not included in delivery

** possible way of installing the fan (output is directed up) *** possible way of installing the fan (output is directed sideways)

A

B

C

B

12kW

B

C

RE

RE

C

RE

Front view

Side view

12-48kW

Back view

PVV

PP

PelTec /

Peltec-lambda

12

SG *

PT

RP

FC

PVV

PE

PLV

PG

SP

VE DP

E

F

D***

D**

PT

SP

RP

SG *

E

F

D***

D**

FC

PE

PP

DP

VE

PG

PLV

SG *

RP

PT

SP

FC

PE

PP

DP

VE

F

D***

D**

E

PVV

PLV

PG

SG *

PT

SP

RP

FC

PE

PP

F

D***

D**

E

PVV

PLV

PG

PelTec /

Peltec-lambda

18

PelTec /

Peltec-lambda

24-36

PelTec /

Peltec-lambda

48

18kW 24-48kW

Technical instructions PelTec / PelTec-lambda

Basic parts and sensors

4

Technical instructions PelTec / PelTec-lambda

1 - Boiler sensor ( 5k)NTC
2 - sensor ( 5k)

1

DHW NTC
3 - Presostat
4 - Photocell

5 - Electric heater
6 - Flue gas sensor (Pt 1000)

7 - Fan speed sensor
8 - tube bimetal sensorPVC
9 - Pellet level in the tank

1

10 - Flow sensor ( 5k)NTC
11 - Return sensor ( 5k)NTC
12 - Lambda probe

ADDITIONAL EQUIPM ENT

Depending on the configuration can be used as: DHW sensor, flow temperature sensor,
accumulation tank sensor (CAS), hydraulic crossover (CRO)
Only PelTec-lambda

*

**

11

4

3

5

12

PelTec-lambda 18-48 kW

12

PelTec-lambda 12 kW

24-48 kW

9

7

6

8

10

11

18-48kW

9

8

10

6

7

11

11

1

2

4

3

5

4

3

5

12 kW 18 kW

*

*

*

**

**

12 kW

*

**

CAL - alarm

box

(speaker/

LED)

CM2K modul

for regulation

2 heating

circuits

CMNET modul

for boiler

cascade

GSM Alarm

modul

for mobile

network

Pelet
suction
system

Cm wifi-box

(Internet

supervision)

Increasing

volume

of pellet tank

(+77kg, h=300mm)

1.0. INTRODUCTION

The PelTec / PelTec-lambda 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.

1.1. BOILER DESCRIPTION

All local regulations, including those referring to national and European standards need to be
complied with when installing the appliance.
The boiler must not be modified unless using the tested original accessories we provide or if the
work is undertaken by our Customer Service.
Only fit original spare parts. These can be obtained from your customer service partner or directly
from ourselves. European standards need to be complied with when installing the appliance.

Regular care and cleaning of the appliance, flue gas outlets, connecting piece and flue.

CAUTION:

The flue may block if the boiler is heated again after a long period of it not being used. Before

starting the boiler, have the flue checked by a specialist (chimney sweep).
Ensure sufficient supply of fresh air in the installation room when heating. The air must be replaced
at least 0.8 times an hour through constant and reliable room venting. Fresh air may have to be
provided from outside if the windows and doors in the room where the boiler is installed are well
sealed or if this room contains other equipment, such as extractor hoods, clothes dryer, fan etc.

1.2. SAFETY PRECAUTIONS

1.3. IMPORTANT INFORMATIONS

This symbol indicates measures for protection against
accidents and warning for the user and / or exposed
persons.

Steel hot water boiler are engineered for wood pellet firing. In the boiler is installed the burner for wood
pellet firing with the automatic firing and automatic self-cleaning function which enables the reliable
operation also with the low quality wood pellets. The function of the automatic cleaning flue gas tubes
provides the unifying exchange of the heat and high and unifying level of boiler efficiency. Digital boiler
controller in a basic construction offers also the possibility of control with the additional equipment likes
lambda probe or level control of the wood pellets in the pellet tank. The pellet tank is the integral part of
the boiler. The boiler is delivered in pieces due to the easier transport into the boiler room.

The boiler and related accessories are state of the art and meet all applicable safety regulations.

The control unit, wiring chamber, el. heater, safety cut-out STB thermostat, fan, grid cleaning
mechanism, flue gas tubes cleaning mechanism and pellet supply mechanism are integrated into the

PelTec / PelTec-lambda . They are operate at a voltage of 230 V AC. Improper installation or repair can
pose the danger of life-threatening electric shock. Installation may beperformed only by appropriately
qualified technicians.

Caution symbols:

Please take careful note of the following symbols in this Operating Manual.

Introduction, boiler description, safety precautions, important informations

5

Technical instructions PelTec / PelTec-lambda

1.4. STATUS OF D ELIVERY

Equipment is delivered seperately:

1. Boiler with planking and thermal insulation

2. Pellet tank in a cardboard box (the parts need to be mounted, see instructions for mounting
the pellet tank)

3. Feeder screw with a flexible PVC tube (should be placed in the pellet tank)

4. Grating cleaning mechanism (requires installation on the boiler)

5. Fan (requires installation on the boiler)

6. Pump group (Tubes with 4-way mixing valve with actuator and circulation pump (need to be mounted
on boiler, Mandatory set the 3-speed pump on the speed 3.)

Status of delivery

6

Technical instructions PelTec / PelTec-lambda

Figure 1. Status of delivery

12kW

Pellet tank

Boiler

Feeder screw

18-48 kW

Boiler

Fan

Grate cleaning
mechanism

Feeder screw

Pellet tank

PelTec /

PelTec-lambda

12

Pump group

PelTec /

PelTec-lambda

18-36

PelTec /

PelTec-lambda

48

Mounting parts

1.5. MOUNTING COMP ONEN TS

Fan

- mount on the back of boiler, is obligatory to use the flange gaskets fan, fastened using M8 bolts and
nuts. Plug-connector for power supply fan and the fan tachometer in the back of the control box. Fan
output can be mounted in any directions.

Fan

(Fan output can be mounted in
any directions)

Flange for mounting
on the boiler

Flange for mounting fan

Mechanism for grating cleaning

- mount on the right side of the boiler (in this side is pellet tank), must be fastened using M8 bolts

and nuts. After assembly, it is necessary to attach the lever burner grid with gear motor trail.
Plug-in two cables with connectors (motor and microswitches).

For ease of handling, transport and import of boiler, PelTec / PelTec-lambda is delivered in parts that
need be mounted on the boiler when the boiler is in the boiler room. These parts need to be installed on
the boiler:

Flange for
mounting
mechanism
for self-cleaning

Flange for mounting on the boiler

7

Technical instructions PelTec / PelTec-lambda

Positions of mounted components

Seal

Socket for temp.sensor

Socket

PelTec /

PelTec-lambda

12

Pump group

PelTec /

PelTec-lambda

18-36

PelTec /

PelTec-lambda

48

Example of installation pump group to the boiler PelTec/PelTec-lambda 18-36

Socket

1

1

1

2

3

4

5

6

2

3

4

5

6

2

4

3

5

6

7

*

*Only PelTec / PelTec-lambda 48

1 - Boiler pump P1
2 - Angled T-piece -return flow
3 - 3-way mixing valve
4 - Motor actuator
5 - Connecting pipe
6 - T-piece -flow
7 - Lower pipe

*

LEGEND:

Pump group

- mount pump group with 4-way mixing valve to the boiler so that the T-piece is in the upper side. On
the upper connector of the T-piece incorporate safety ventilation group. On the back of boiler were
prepared two holenders for mounting connection tubes (connection tubes with 4- way mixing valve).
Be sure to use the seal for holenders. Set return temperature sensor in the socket for the sensor
between the 4-way mixing valve and the boiler. It is obligatory using the included thermal paste.
Plug-in return flow sensor on the back of the box control. Connect the pump cable with connector to
the back of the control box. Mandatory set the 3-speed pump on the speed 3.

NOTE: check the tightness of connection tubes. Fasten connections binding tubes if necessary, so
that a good seal.

8

Technical instructions PelTec / PelTec-lambda

Pellet level in the tank sensor

- mount this sensor on the back side inside of the pellet tank. First set the plastic glass distance for
sensor. After that, put the sensor on this glass. Attach the sensor and the plastic distance with 4 screws
supplied. Attach protective cover. Plug-in the cable with connector of the pellet level sensor on the back
of the box control.

Protection cover
Pellet level sensor
Plastic pad
Mounted position (be
sure to attach the cable
with cable ties

Pellet tank

- mount pellet tank according installation manual for mounting pellet tank. Set up pellet transporter in
the pellet tank. Place the pellet tank to the boiler and set PVC tube to conveyor and tube
supply on the boiler. Set up the PVC tube so as to allow the smooth falling pellet into the burner. If
necessary, cut the PVC tube to the required length. Plug-in the power connector on the back of the
control box.

Positions of mounted components

9

Technical instructions PelTec / PelTec-lambda

1.5.1 MOUNTI NG ME CHANISM F OR GRATE C LEANING

1. Remove the two screws (A), from cover (B) of the grate cleaning mechanism and remove cover
carefully .

A

B

B

2. Remove the two screws (C) and just slightly loosen screws (D) as shown in picture below .
Carefully attach grate cleaning mechanism to loose screws (D), then fasten with screws (C) and
tighten the screws (D).

C

D

C

D

Grate cleaning

10

Technical instructions PelTec / PelTec-lambda

D

E

E

D

F

F

cca 1-2mm

G

A

3. Set the screw (E) into the jagged track (F), set the nut on the screw and tighten. Free space
(G) is required for the proper functioning of the mechanism.

4. Connect the connectors (H) so they have a good contact. Carefully set the cover and tighten with
the screws (A).

H

Grate cleaning

11

Technical instructions PelTec / PelTec-lambda

Setting photocell on the work position

Before first startup, be sure to set the photocell to the position as on
Figure 3, otherwise the boiler will not work properly!

Figure 2. Photocell position on delivery

57mm

The photocell should not be set too deep or too shallow in the box. So, limiter determines
the proper depth of photocell position. Make sure the limiter is set to black mark. Black
mark should be barely visible (see image below).

Limiter

Screw

Mark

The limiter must be set so that the black
mark is barely visible like is shown below
(partially covered by hose clamps)

Figure 3. Carefully put the photocell
until the plastic holder

Figure 4. Photocell ready to work

1.5.3 SETTIN G PHO TOCELL TO THE WORK POSIT ION

12

Technical instructions PelTec / PelTec-lambda

1.6. SAFETY ELEMENTS

1.7. FUEL

Safety elements, fuel

Boiler have a few safety elements:

- Bimetal thermostat built on the burner pellet feeding tube. If the bimetal set temperature (80°C)

is exceeded, pellet feeding is stopped, the burner shuts down and the error E3 appears on the

control unit (LED diode switches on).

- If there is no flame (the built in photo-cell does not detect the flame within set time), control
stops the burner operation and error E2 is displayed or it goes to blowing off and error E6 is

- Displayed (LED diode switched on).Control unit has a built in protective function which protects the
boiler against overheating. If temperature in the boiler exceeds 93°C, regardless heating or
sanitary water is needed the boiler pump and/or the sanitary water turns on and works until
temperature in the boiler falls below 93°C.

- The fan has a built-in RPM counter and, if regulation is informed that the fan does not operate in
accordance with the requirement interrupts the process display fan error

- Drive for grate linear move have in-built two switches by wich control unit monitor position of grate.
If grate at given moment is not on provided place, control unit recieve information that grate is not
on provided place and interrupt proces and display information about grate error.

- Flue gas connection have in-built sensor for flue gas temperature meassuring. If flue gas tube
temperature is over 250°C, control unit interrupt proces and display information about too high flue
gas temperature.

When temperature in the boiler exceeds 110°C (+0°C / - 9°C), power supply is turned off by the
safety thermostat (via control unit).

Thermal protection built in coils of the fan electric motor at the burner and the screw feeder motor,
protects them against overheating caused by failure or locking.

A flexible tube connecting the pellet burner and pellet tank is made of plastic material reinforced with
metal wire which, in case of back flame from the burner to the tank, melts and prevents flame to
penetrate to the pellet tank.

Only wood pellets are used as fuel in PelTec / PelTec-lambda. Wooden pellets are bio-fuel made of
wooden wastes. Pellets can be packed in different packaging: in bags (15 kg or 1000 kg), or as bulk in

3

large (underground) tanks ( 4 - 15 m ) or in basement spaces. Recommended properties of pellets for
firing in PelTec / PelTec-lambda boilers are the following:

- heating value >= 5 kWh/kg (18 MJ/kg)

-diameter <= 6 mm

-max. moisture content <= 12 %

-max. dust content <= 1,5 %.

13

Technical instructions PelTec / PelTec-lambda

2.0. BOILER POSIT IONI NG AND ASSEMB LY

2.1. MINIMUM DISTA NCE FROM THE ROOM WALL S

Figure 5. Minimum distance from the room walls for PelTec / PelTec-lambda

1

Boiler PelTec / PelTec-lambda
Chimney
Flue (Chimney connection; must be insulated)

-

-

2

A = 6,02 x 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.

2.2. OPENING FOR FRESH AIR (FRE SH AIR SUPP LY)

3

-

Boiler positioning, assembly and building in must be performed by a qualified person. We recommend that
boiler is placed on a concrete base with height of 50 to 100 mm above the floor. Boiler room must be frost­proof and well ventilated. Boiler has to be positioned so that it can be properly connected to the chimney (see
Figure 2) and simultaneously, enabling tending of boiler and additional equipment, control during operation,
cleaning and maintenance.

WARNING!
Flammable items must not be placed on the boiler and within the minimum distances shown in
Figure 1.

Q - boiler output in kW

2

A - opening area in cm

1

-

-

2
3

-

min. 550 mm

min. 1000 mm

min. 450 mm

2

3

1

min. 300 mm

max 1500 mm

Boiler positioning

14

Technical instructions PelTec / PelTec-lambda

Figure 6. Dimensioning of the chimney for PelTec / PelTec-lambda

3.0. CONNECTION TO THE CHIMNEY

10

15

20

25

30

35

40

45

50

5 10 15

Wood pellets

15

16

18

20

6 7 8 9

The chimney must be resistant against flue condensate!

IProperly dimensioned and built chimney is the main condition for safe and economical
functioning of the boiler. The thermal insulation of the chimney has to be done properly, it has
to be absolutely gas-proof and smooth. On its lower part there has to be built in the opening for
cleaning with the door. An brick-layed chimney has to have three layers with an insulation of 30 mm
in the middle, if the chimney is built inside the house (i.e. inside the heated area), or an insulation of
50 mm if it is built outside the house (i.e. outside the heated area). The flue gas temperature has to
be at least 30°C higher then the temprerature of their consdensation point. The choice and the
construction of the chimney has to be performed by the authorized person. Inside dimensions of the
chimney intersection selected in accordance with diagram for chimney selection, they depend of its

height and of the capacity of the boiler.

Chimney must be dimenensioned by "diagram for chimney selection" and maximum permetted
lenght of connection flue gas tube between connection on fan and chimney is 2000 mm and
minimum light diameter xx0 mm with maximum two 90° bends. Connection flue gas tube can be
mounted horizontally or at any angle which allows to gas, on his way to chimney, a constant
increase of height with condidering of exit point from fan. Connection flue gas tube must have
openings for cleaning through which is possible to clean entire lenght of flue gas tube or must
ensure easy removal part of flue gas tube which allow complete cleaning of connection flue gas
tube. To prevent entry of condensate form chimney into the boiler, flue gas tube must be mounted 10
mm deeper into the chimney. Connection flue gas tube between fan and chimney must be insulated

with 30-50 mm mineral wool.

Connection to the chimney

Useful height of the chimney (m)

Rated thermal output of the boiler (kW)

Chimney light diameter (cm)

Chimney dimensioning example:
for boiler PelTec / PelTec-lambda 36

Boiler heat output: 36 kW
Fuel: wood pellets

Required usable chimney height: 7 m

Required chimney light
diameter: 18 cm

15

Technical instructions PelTec / PelTec-lambda

In open system it is necessary to put an open expansion vessel min. 0,5 m 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.

4.1.1. CONNECTION TO OPEN HEATING SYSTEM

4.1. CONNECTION TO CENTRAL HEATING SYSTEM

All installation work must be made in accordance with valid national and European standards.
Boiler PelTec / PelTec-lambda can be built in closed and open central heating systems. In both cases
boiler can be fired with wood 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.

4.0. INSTALLATION

All local regulations, including those referring to national and European standards need to be complied
with when installing the appliance.

Installation, connection to central heating system

4.1.2. CONNECTION TO CLOSED HEATING SYSTEM

In closed heating system it is obligatory to build in certified safety valve with opening pressure of 2,5 bar
and a membrane expansion vessel. Safety valve and expansion vessel must be built in accordance with
professional rules and between safety valve and expansion vessel and boiler must not be any valve.
Schemes for possible configurations are on following pages.

Figure 7. Connections to connect the boiler to a closed heating system

PelTec /

PelTec-lambda

12

PelTec /

PelTec-lambda

18-36

PelTec /

PelTec-lambda

48

1

2

4

3

1 - Safety ventilation group connection
2 - Expansion vessel connection

1

3

4

2

2

3

4

1

3 - Main flow to installation
4 - Return flow from installation

16

Technical instructions PelTec / PelTec-lambda

3

6

bar

2

4

5

1 - Boiler PelTec / PelTec-lambda
2 - Air self-venting group 2,5 bar
3 - Motor 4-ways mixing valve
4 - Closed type expansion vessel

5 - Return flow sensor
6 - Flow temperature sensor
7 - Heating circuit
8 - Room thermostat

P1

1 - Boiler PelTec / PelTec-lambda
2 - Air self-venting group 2,5 bar
3 - Motor 4-ways mixing valve
4 - Closed type expansion vessel

5 - Return flow sensor
6 - DHW tank
7 - DHW sensor

3

M

bar

2

4

5

HV

P1

6

1

1

M

P2

7

7

8

Required sensors: - return flow temp. sensor

- DHW sensor

Required sensors: - return flow temp. sensor

- flow temperature sensor

Configuration DHW, DHC

Scheme 1. Configuration DHW

Scheme 2. Configuration DHC

17

Technical instructions PelTec / PelTec-lambda

1 - Boiler PelTec / PelTec-lambda
2 - Air self-venting group 2,5 bar
3 - Motor 4-ways mixing valve
4 - Closed type expansion vessel
5 - Return flow sensor

6 - Flow sensor
7 - DHW tank
8 - DHW tank sensor
9 - Heating circuit
10 - 3-way diverter valve
11 - Room thermostat

3

M

6

bar

2

4

5

HV

P2

P1

7

1

9

P

1 - Boiler PelTec / PelTec-lambda
2 - Air self-venting group 2,5 bar
3 - Motor 4-ways mixing valve
4 - Closed type expansion vessel

5 - Back flow sensor
6 - Accumulation tank CAS
7 - Accumulation tank sensor CAS 1 (upper)
8 - Accumulation tank sensor CAS (lower)

3

bar

2

4

5

P1

6

7

8

1

M

P3

10

8

11

Required sensors: - return flow temp. sensor

- flow temperature sensor

- DHW sensor

Required sensors: - return flow temp. sensor

- accumulation tank sensor (upper)

- accumulation tank sensor (lower)

Configuration DHC || DHW, BUF

Scheme 3. Configuration DHC || DHW

Scheme 4. Configuration BUF

NOTES:

- In this configuration is possible to upgrade up to 4 unit "CM2K-P module for regulation 2 heating circuits“.

- In this configuration is possible to connect external control (external start)

18

Technical instructions PelTec / PelTec-lambda

1 - Boiler PelTec / PelTec-lambda
2 - Air self-venting group 2,5 bar
3 - Motor 4-ways mixing valve
4 - Closed type expansion vessel
5 - Return flow sensor
6 - DHV tank

7 - DHW tank sensor
8 - Accumulation tank CAS
9 - Accumulation tank sensor CAS 1 (upper)
10 - Accumulation tank sensor CAS 2 (lower)
11 - 3-way diverter valve

3

M

bar

2

4

5

HV

P1

1

P

P3

11

7

8

9

10

6

1 - Boiler PelTec / PelTec-lambda
2 - Air self-venting group 2,5 bar
3 - Motor 4-ways mixing valve
4 - Closed type expansion vessel
5 - Return flow sensor

6 - Accumulation tank CAS
7 - Accumulation tank sensor CAS 1 (upper)
8 - Accumulation tank sensor CAS 2 (lower)
9 - 3-way manual mixing valve
10 - Room thermostat

bar

2

4

5

P1

9

10

6

7

8

1

3

M

P2

Required sensors: - return flow temp. sensor

- DHW tank sensor

- accumulation tank sensor (upper)

- accumulation tank sensor (lower)

Required sensors: - return flow temp. sensor

- accumulation tank sensor (upper)

- accumulation tank sensor (lower)

Configuration DHW || BUF, BUF -- IHC

Scheme 5. Configuration DHW || BUF

Scheme 6. Configuration BUF -- IHC

NOTE:

In this configuration is possible to upgrade up to 4 unit "CM2K-P module for regulation 2 heating circuits“.

19

NOTES:

- In this configuration is possible to upgrade up to 4 unit "CM2K-P module for regulation 2 heating circuits“.

- In this configuration is possible to connect external control (external start)

Technical instructions PelTec / PelTec-lambda

1 - Boiler PelTec / PelTec-lambda
2 - Air self-venting group 2,5 bar
3 - Motor 4-ways mixing valve
4 - Closed type expansion vessel
5 - Return flow sensor
6 - DHV tank
7 - DHV tank sensor

8 - Accumulation tank CAS
9 - Accumulation tank sensor CAS 1 (upper)
10 - Accumulation tank sensor CAS 2 (lower)
11 - Heating circuit
12 - 3-way diverter valve
13 - 3-way manual mixing valve
14 - Room thermostat

3

M

bar

2

4

5

HV

P1

1

P

P3

12

7

8

9

10

6

11

13

1 - Boiler PelTec / PelTec-lambda
2 - Air self-venting group 2,5 bar
3 - Motor 4-ways mixing valve
4 - Closed type expansion vessel
5 - Return flow sensor

6 - Accumulation tank CAS
7 - Accumulation tank sensor CAS 1 (upper)
8 - Accumulation tank sensor CAS 2 (lower)
9 - DHV tank
10 - DHV tank sensor

bar

2

4

5

P1

6

7

8

1

3

M

P2

HV

9

P3

10

14

Required sensors: - return flow temp. sensor

- DHW tank sensor

- accumulation tank sensor (upper)

- accumulation tank sensor (lower)

Required sensors: - return flow temp. sensor

- DHW tank sensor

- accumulation tank sensor (upper)

- accumulation tank sensor (lower)

Configuration DHW || BUF -- IHC, BUF -- DHW

Scheme 7. Configuration DHW || BUF -- IHC

Scheme 8. Configuration BUF -- DHW

NOTE:

In this configuration is possible to upgrade up to 4 unit "CM2K-P module for regulation 2 heating circuits“.

20

Technical instructions PelTec / PelTec-lambda

NOTES:

- In this configuration is possible to upgrade up to 4 unit "CM2K-P module for regulation 2 heating circuits“.

- In this configuration is possible to connect external control (external start)

1 - Boiler PelTec / PelTec-lambda
2 - Air self-venting group 2,5 bar
3 - Motor 4-ways mixing valve
4 - Closed type expansion vessel
5 - Return flow sensor
6 - Accumulation tank CAS
7 - Accumulation tank sensor CAS 1 (upper)

8 - Accumulation tank sensor CAS 2 (lower)
9 - DHV tank
10 - DHV tank sensor
11 - Heating circuit
12 - 3-way manual mixing valve
13 - Room thermostat

bar

2

5

P1

13

7

8

HV

9

P3

P2

6

3

4

M

12

1

11

10

1 - Boiler PelTec / PelTec-lambda
2 - Air self-venting group 2,5 bar
3 - Motor 4-ways mixing valve
4 - Closed type expansion vessel

5 - Return flow sensor
6 - Hydraulic crossover
7 - Hydraulic crossover sensor

3

M

bar

2

4

5

P1

1

7

6

Required sensors: - return flow temp. sensor

- DHW tank sensor

- accumulation tank sensor (upper)

- accumulation tank sensor (lower)

Required sensors: - return flow temp. sensor

- hydraulic crossover sensor

Configuration BUF -- IHC || DHW, CRO

Scheme 9. Configuration BUF -- IHC || DHW

Scheme 10. Configuration CRO

21

NOTES:

- In this configuration is possible to upgrade up to 4 unit "CM2K-P module for regulation 2 heating circuits“.

- In this configuration is possible to connect external control (external start)

NOTES:

- In this configuration is possible to upgrade up to 4 unit "CM2K-P module for regulation 2 heating circuits“.

- In this configuration is possible to connect external control (external start)

Technical instructions PelTec / PelTec-lambda

Scheme 12. Configuration DHC || DHW(2)

Configuration CRO / BUF, IHC || DHW (2)

1 - Boiler PelTec / PelTec-lambda
2 - Air self-venting group 2,5 bar
3 - Motor 4-ways mixing valve
4 - Closed type expansion vesse
5 - Return flow sensor
6 - Flow sensor

7 - DHW tank
8 - DHW tank sensor
9 - Heating circuit
10 - Room thermostat
11 - Hydraulic crossover

Required sensors: - return flow temp. sensor

- flow temperature sensor

- DHW sensor

Scheme 11. Configuration CRO / BUF

3

bar

2

4

5

P1

6b

7

8

1

M

Version 1: (display shows 1 temperature, eg hidraulic crossover)

3

M

bar

2

4

5

P1

1

9

6a

Version 2: (Display shows 2 temperatures (eg. accumulation tank)

1 - Boiler PelTec / PelTec-lambda
2 - Air self-venting group 2,5 bar
3 - Motor 4-ways mixing valve
4 - Closed type expansion vessel
5 - Return flow sensor

6a - Hydraulic crossover
6b - Accumulation tank
7 - Accumulation tank sensor 1 (upper)
8 - Accumulation tank sensor 2 (lower)
9 - Hydraulic crossover sensor

Note: Connecting the sensor 9 (version 1) and 7,8 (version 2) is not required because these temperatures
are only informative, if sensors are not connected, regulation will show temperature " - °C". The boiler
regulation will not report any error even if the sensors are defective.

- manually (ON/OFF)

- by scheduled starting times

- by external controller(START/STOP)**

- by cascade manager *

- by external controller (start/stop) + cascade manager**

Possible control:

- by room thermostat

Imposible control:

Additional equipment.

NOTE: USED ONLY IN CASCADES AND EXTERNAL CONTROL

Required sensors: - return flow temp. sensor

- hydraulic crossover sensor (only in version 1)

- accumulation tank sensor (upper)(only in version 2)

- accumulation tank sensor (lower)

*

**

22

Technical instructions PelTec / PelTec-lambda

NOTES:

- In this configuration is possible to upgrade up to 4 unit "CM2K-P module for regulation 2 heating circuits“.

- In this configuration is possible to connect external control (external start)

3

M

bar

2

4

5

HV

P1

7

1

9

P3

8

10

P2

11

1 - Boiler PelTec / PelTec-lambda
2 - Air self-venting group 2,5 bar
3 - Motor 4-ways mixing valve
4 - Closed type expansion vessel
5 - Return flow sensor
6 - Accumulation tank CAS
7 - Accumulation tank sensor CAS 1 (upper)

8 - Accumulation tank sensor CAS 1 (lower)
9 - Heating circuit 1
10 - 3-way manual mixing valve 1.circuit
11- Heating circuit 2
12- 3-way manual mixing valve 2.circuit
13- Room thermostat 1. circuit
14- Room thermostat 2. circuit

bar

2

5

P1

14

7

8

P3

P2

6

3

4

M

10

1

11

9

12

13

2. heating circuit

1. heating circuit

Required sensors: - return flow temp. sensor

- accumulation tank sensor (upper)

- accumulation tank sensor (lower)

Configuration DHC 2X, BUF--IHC 2X

Scheme 13. Configuration DHC 2X

Shema 14. Configuration BUF--IHCX2

1 - Boiler PelTec / PelTec-lambda
2 - Air self-venting group 2,5 bar
3 - Motor 4-ways mixing valve
4 - Closed type expansion vessel
5 - Return flow sensor
6 - Main flow temperature sensor
7 - Heating circuit 1

8 - 3-way manual mixing valve 1.circuit
9 - Heating circuit 2
10 - 3-way manual mixing valve 2.circuit
11- Room thermostat 1. circuit
12- Room thermostat 2. circuit
13 - Hydraulic crossover

Required sensors:

- return flow temp. sensor

- main flow temperature sensor

23

NOTES:

- In this configuration is possible to upgrade up to 4 unit "CM2K-P module for regulation 2 heating circuits“.

- In this configuration is possible to connect external control (external start)

Technical instructions PelTec / PelTec-lambda

3

bar

2

4

5

P1

1

M

12

P3

P2

10

9

7

8

2.krug grijanja

1.krug grijanja

11

6

13

Configuration CRO / DHW

1 - Boiler PelTec / PelTec-lambda
2 - Air self-venting group 2,5 bar
3 - Motor 4-ways mixing valve
4 - Closed type expansion vessel
5 - Return flow sensor

6 - Hydraulic crossover
7 - Hydraulic crossover sensor
8 - DHW tank
9 - DHW tank sensor

bar

2

4

5

P1

1

3

M

8

9

Required sensors: - return flow temp. sensor

- DHW tank sensor

- hydraulic crossover sensor

Scheme 15. Configuration CRO -- DHW

7

6

P3

NOTE:

In this configuration is possible to upgrade up to 4 unit "CM2K-P module for regulation 2 heating circuits“.

24

Technical instructions PelTec / PelTec-lambda

Electrical connections

5.0. ELECTRICAL CONNEC TION S

All electrical works must be performed by a certified professional in accordance with valid national and
European standards. If the supply cord is damaged, it must be replaced by the manufacturer, its service
agent or similarly qualified persons in order to avoid a hazard. A device for switching of all power supply
poles must be installed in electrical installation in accordance with the national regulations on electrical
installations. Pump of heating system should be connected to boiler control unit PelTec / PelTec-lambda .

CAUTION: When connecting any electrical part be sure to unplug the boiler at the main
switch and disconnect the power supply.

Figure 8. Connectors for power supply, el. components and sensors

S1* - Sanitary water sensor
Room thermostat 2.circuit
S2 - Accumulation tank 1 sensor (up) /
Hydraulic crossover sensor
S3 - Accumulation tank 2 sensor (down)
S4 - Flue gas sensor
S5 - Outside temp. sensor
S6 - Flow sensor / External control **

8

9

10
11
12
13

1
2
3

4

5
6
7

POWER SUPPLY
M1 - Pellet feeder
M2 - Actuator for 4-way
mixing valve
M3 - Fan

P1 - Heating pump
P2 - Domestic water pump
P3 - Tank pump

S7 - Return sensor
S8 - tube bimetal sensor PVC
S9 - Room thermostat / External control**
S10 - Alarm 1
S11 - Alarm 2 / Reserve
S12 - Pellet level in the tank sensor

- UTP connector

- Reserve

- Reserve

- Lambda probe cable

14
15
16
17
18
19
20
21
22
23

3

5

6

7

2

4

1

23

14

1615

8

1

2

3

5

13

6

1211

109

7

18 19

17

20

4

22

21

23

8

9

10

11

12

14

15

16

17

18

13

19

2021 22

Note: It is obligatory mount the sensor in the socket for sensors using thermal paste

* If heating system contains DHW, on the connector S1 is connected hot water sensor, and if the heating system

contains 2 heating circuit, on the connector S1 is connected the room thermostat.
**External control can be connected only in configurations: 4: BUF, 6: BUF--IHC, 8: BUF--DHW, 9: BUF-IHC||DHW,
10: CRO, 14: BUF--IHCX2 into the connector S6 and configuration 11:CRO/BUF into connector S9.

***

Only PelTec-lambda

*

**

**

***

The main switch
Display
The main electronic board
Electronic board inputs
Connectors for pump /
diverter valve

25

***

***

Technical instructions PelTec / PelTec-lambda

Main Board
PelTec / PelTec-lambda

Lambda board

(only PelTec-lambda)

*

Fuses

5.1. FUSES

MAIN BOARD

MARK

FUSE DEVICES

F1

fast acting fuse 3,15 A

LAMBDA BOARD (only PelTec-lambda)

MARK

FUSE DEVICES

F1

fast acting fuse 3,15 A

- all pumps

- regulation (power supply)

F2

fast acting fuse 500 mA

- all other devices who are not on the F1
and F3 (motor mechanism for the grating
self-cleaning, pellet conveyor motor, flu
gas tube cleaning motor...)

F3

medium slow fuse 3,15 A

- heater

- fan

IMPORTANT:

When replacing a fuse, be sure turn off the boiler at the main switch and unplug the power cord.

Note:
Be sure to use fast acting fuses!

*

26

Technical instructions PelTec / PelTec-lambda

Mark: F3

Mark: F2

Mark: F1

Medium slow
fuse 3,15 A

Fast acting fuse 500mA Fast acting fuse 3,15A

Mark: F1

Fast acting fuse 3,15A

- lambda probe power supply

Electrical scheme (PelTec)

5.2.a ELECT RICA L SCH EME OUTPUTS 1 (PelTec)

27

Technical instructions PelTec / PelTec-lambda

CENTROMETAL

L

6, 3 A

N

PE

L1 N

3P CR NI

MUŠK I

3P CR NI

ŽENS K I

NL1

L1 N

3P BI J EL I

MUŠK I

3P BI J EL I

ŽENS K I

NL1

L1 N

L1 N

3P BI JE L I

MUŠK I

M1

M 2

PELLET

CONVEYOR

MOTOR

MIXING VALVE

ACTUATOR

FLU GAS

TUBE

CLEANING

MOTOR

ELECTRIC

HEATER

MAIN

SWITCH

SAFETY

THERMOSTAT

Connector

3-bit

white

Connector

3-bit

white

Connector

3-bit

black

Connector

3-bit

black

Connector

3-bit

white

Connector

3-bit

white

Terminal

block

brown

black

blue

black

blue

black

blue

blue blue

black

blue

blue

black

TO 1

T O 3

POW 1

L LL t L t L t L t L t L t L t L t L t L t L tN N N NN N N N NLp Lp

TO 2

TO 4

L t NLt

TO 5

black

blue

blue

black

blue

black

black

blue

black

blue

black

blue

blue

black

black

blue

brown

brown

crna

green

blue

smeđa

SMS motor

mechanism for

the grating

self-cleaning

1 2 3

1 2 3 4 1 2 3 4 5 6

1 2 3 4 1 2 3 4

1 2 3 4 5 6

S C H E M A - Control unit

PelTec

PelTec

OUTPUTS

F3

medium

slow

3,15A

F2

fast

500mA

F1

fast

3,15A

Electrical scheme (Peltec)

5.3.a ELECT RICA L SCH EME OUTPUTS 2 (PelTec)

28

Technical instructions PelTec / PelTec-lambda

L1 N

3P SI V I

MUŠK I

3P SI V I

ŽENS K I

NL1

L1 N

3P Z EL E NI

MUŠK I

L1 N

3P SMĐEI

MUŠK I

L1 N

7P CR / SM

MUŠK I

T1 T 2 S 3 B 4

7P CR / SM

ŽENS K I

NL1 T1 T 2 S 3 B 4

M 3

P1

P 2

P 3

3P SMĐEI

ŽENS K I

NL1

3P Z EL E NI

ŽENS K I

NL1

PUMP

P1

PUMP

P2

PUMP

P3

blue

black

blue

black

blue

black

Connector

3-pin

grey

blue

black

blue

Connector

3-pin

green

Connector

3-pin

brown

Flue gas fan with

RPM (rotates per min) sensor

black

black

blue

blue

black

red

white

blue

black

brown

Connector

7-pin

black/brown

S C H E M A - Control unit

PelTec

blue

brown

PelTec 12-24 C=2uF

PelTec 36-48 C=2,5uF

CENTROMETAL

black

Electrical scheme (PelTec)

5.4.a ELECT RICA L SCH EME INPUTS (PelTec)

29

Technical instructions PelTec / PelTec-lambda

CENTROMETAL

2 1

2P SI V I

MUŠK I

2P SI V I

ŽENS K I

2 1

1

2

3

PelTec - INPUTS

Ai 1 Ai 3 Ai 2

HAL 1

24

+5 V

SI G

UTP1UTP2

BOILER

SENSOR

CODE FOR

BOILER

POWER

PRESOSTAT

Photocell

SHEMA Control unit

PELTEC

blue

black

brown

Connector

2-bit

grey

1

12

3

24

1

3

1

2

3

2P C RNI

ŽENS K I

2 1

2 1

2P CR NI

MUŠK I

MICROSWITCHES

FOR MOTOR

MECHANISM

FOR THE SELF-CLEANING

Connector

2-bit

black

GND

Electrical scheme (PelTec)

5.5.a ELECTRICA L SCH EME SENSORS (PelTec)

30

Technical instructions PelTec / PelTec-lambda

CENTROMETAL

U T P

US B

U T P CABLE

U T P CABLE

1 2

SIG

GND

1 2

SIG

GND

1 2

SIG

GND

1 2

SIG

GND

1 2

SIG

GND

1 2

SIG

GND

1 2

SIG

GND

1 2

SIG

GND

1 2

SIG

GND

1 2

SIG

GND

1 2

SIG

GND

1 2

SIG

GND

1 2

+5 V

3

GND

SIG

UT P 1 U TP 2

1 2

+5V

3

GND

SIG

1 2

+5V

3

GND

SIG

S C H E M A - Control unit

PelTec

PelTec - SENSORS

PelTec Display

PELLET LEVEL IN

THE TANK SENSOR

3 2

+5 V

1

GND

SIG

S1 S2 S3 S4 S5 S6 S7 S8 S9 S10 S11 S12 S13 S14

blue

black

brown

Room thermostat

for second heating

circuit

or

DHW

sensor

Depending

on the type

of installation

heating

S1

Accumulation

tank 1 sensor

(up)

/

Hydraulic

crossover

sensor

S2

Accumulation

tank 2 sensor

(down)

S3

Flue

gas

sensor

S4

The flow

sensor /

External

control

S6

Return

sensor

S7

Bimetallic

thermostat

S8

Room

thermostat

1. circuit /
External control

S9

Alarm sound

max. 100 mA

(12V)

S10

S12

or

Depending

on the type

of installation

heating

Electrical scheme (PelTec)

31

Technical instructions PelTec / PelTec-lambda

5.6.a ELECT RICA L SHE ME preparation for lambda probe (PelTec)

CENTROMETAL

PREPARATION FOR

LAMBDA PROBE BOARD

POWER SUPPLY

blue

black

S C H E M A - Control unit

PelTec

Electrical scheme (PelTec-lambda)

5.2.b ELECTRICA L SCH EME OUTPUTS 1 (PelTec-lambda)

32

Technical instructions PelTec / PelTec-lambda

CENTROMETAL

L

6, 3 A

N

PE

L1 N

3P CR NI

MUŠK I

3P CR NI

ŽENS K I

NL1

L1 N

3P BI J EL I

MUŠK I

3P BI J EL I

ŽENS K I

NL1

L1 N

L1 N

3P BI JE L I

MUŠK I

M1

M 2

S C H E M A - Control unit

PelTec-lambda

SMS motor

mechanism for

the grating

self-cleaning

PELLET

CONVEYOR

MOTOR

MIXING VALVE

ACTUATOR

FLU GAS

TUBE

CLEANING

MOTOR

ELECTRIC

HEATER

MAIN

SWITCH

SAFETY

THERMOSTAT

Connector

3-bit

white

Connector

3-bit

black

Connector

3-bit

white

Terminal

block

brown

black

blue

black

blue

black

blue

blue blue

black

blue

blue

black

black

blue

blue

black

blue

black

black

blue

black

blue

black

blue

blue

black

black

blue

brown

brown

black

green

blue

brown

PelTec-lambda

OUTPUTS

TO 1

T O 3

POW 1

L LL t L t L t L t L t L t L t L t L t L t L tN N N NN N N N NLp L p

TO 2

TO 4

1 2 3 4 1 2 3 4 5 6

1 2 3 4 1 2 3 4

1 2 3 4 5 6

L t NLt

TO 5

1 2 3

F2

fast

500mA

F3

medium

slow

3,15A

F1

fast

3,15A

Electrical scheme (PelTec-lambda)

5.3.b ELECTRICA L SCH EME OUTPUTS 2 (PelTec-lambda)

33

Technical instructions PelTec / PelTec-lambda

CENTROMETAL

L1 N

3P SI V I

MUŠK I

3P SI V I

ŽENS K I

NL1

L1 N

3P Z EL E NI

MUŠK I

L1 N

3P SMĐEI

MUŠK I

L1 N

7P CR / SM

MUŠK I

T1 T 2 S3 B 4

7P CR / SM

ŽENS K I

NL1 T1 T 2 S 3 B 4

M 3

P1

P 2

P 3

3P SMĐEI

ŽENS K I

NL1

3P Z EL E NI

ŽENS K I

NL1

PUMP

P1

PUMP

P2

PUMP

P3

blue

black

blue

black

blue

black

Connector

3-pin

grey

black

blue

black

blue

Connector

3-pin

green

Connector

3-pin

brown

Flue gas fan with

RPM (rotates per min) sensor

black

crna

plava

blue

black

red

white

blue

black

brown

Connector

7-pin

black/brown

blue

brown

PelTec-lambda

12-24 C=2uF

PelTec-lambda

36-48 C=2,5uF

S C H E M A - Control unit

PelTec

Electrical scheme (PelTec-lambda)

5.4.b ELECTRICA L SCH EME INPUTS (PelTec-lambda)

34

Technical instructions PelTec / PelTec-lambda

CENTROMETAL

PelTec-lambda INPUTS

2 1

2P SI V I

MUŠK I

2P SI V I

ŽENS K I

2 1

1

2

3

Ai 1 Ai 3 Ai 2

HAL 1

24

+5 V

SI G GND

UTP1UTP2

BOILER

SENSOR

CODE FOR

BOILER

POWER

PRESOSTAT

Photocell

blue

black

brown

Connector

2-bit

grey

1

12

3

24

1

3

1

2

3

2P C RNI

ŽENS K I

2 1

2 1

2P CR NI

MUŠK I

MICROSWITCHES

FOR MOTOR

MECHANISM

FOR THE SELF-CLEANING

Connector

2-bit

black

S C H E M A - Control unit

PelTec-lambda

Electrical scheme (PelTec-lambda)

5.5.b ELECTRICA L SCH EME SENSORS (PelTec-lambda)

U T P

US B

U TP

1 2

SIG

GND

1 2

SIG

GND

1 2

SIG

GND

1 2

SIG

GND

1 2

SIG

GND

1 2

SIG

GND

1 2

SIG

GND

1 2

SIG

GND

1 2

SIG

GND

1 2

SIG

PelTec Display

S1 S2 S3 S4 S5 S6 S7 S8 S9

or

S1

S2

S3

S4

S7 S8

S9

SENSORS

S C H E M A - Control unit

PelTec-lambda

DHW

sensor

Depending

on the type

of installation

heating

Accumulation

tank 1 sensor

(up)

/

Hydraulic

crossover

sensor

Accumulation

tank 2 sensor

(down)

Flue

gas

sensor

Room thermostat

for second heating

circuit

Return

sensor

Bimetallic

thermostat

Room

thermostat

1. circuit /
External control

UT P

GND

1 2

SIG

GND

1 2

SIG

GND

1 2

+5 V

3

GND

SIG

UT P 1 U T P 2

1 2

+5V

3

GND

SIG

1 2

+5V

3

GND

SIG

3 2

+5 V

1

GND

SIG

S10 S11 S12 S13 S14

blue

black

brown

Alarm sound

max. 100 mA

(12V)

S10

S12

PELLET LEVEL IN

THE TANK SENSOR

4 / 5

35

Technical instructions PelTec / PelTec-lambda

The flow

sensor /

External

control

S6

Depending

on the type

of installation

heating

or

Elektrical sheme (PelTec-lambda)

5.6.b ELECTRICA L SHE ME L AMBDA PROBE (PelTec-lambda)

»

H

H

+

_

UT P

UT P

RS 4 85

A

B G

T f g. S

1

2

DI / AO

G

S T

O

N F

23 0 V

1

1

8

8

blue

UTP 1

UTP 2

Lambda

board

Lambda probe

L AMB D A S E NZ O R

H

H

L-

L+

white

white

grey

black

blue

S C H E M A - Control unit

PelTec-lambda

5 / 5

36

Technical instructions PelTec / PelTec-lambda

Operating the system, safety, startup

6.0. OPERATING THE SYSTEM

6.1. SAFETY INSTRUCTIONS F OR T HE INSTA LLATI ON ROOM

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.

Children must be supervised in the vicinity of the product. If the supply cord is damaged, it must be
replaced by the manufacturer, its service agent or similarly qualified.

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

6.2. INITIAL STARTUP

See technical instructions for PelTec / PelTec-lambda digital control unit where is explained initial
startup.

Note:

The start up has to be done by the authorized person, otherwise the warranty for this product is not valid
and the product must not be used.

Note:

If condensation escapes during the initial heatup phase, this does not indicate a fault.
If this occurs, clean up using a cleaning rag.

6.3. FILLING / R EFILLING PELLET TANK WITH FUEL

CAUTION:

Use only permitted pellets!

37

Technical instructions PelTec / PelTec-lambda

If you smell flue gas:

- shut down the heating system

- Ventilate the boiler room

- Close all doors leading to the living space

6.3. BOILER USE

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. Children must be supervised in the vicinity of the product. If the supply cord is damaged, it
must be replaced by the manufacturer, its service agent or similarly qualified persons in order to avoid a
hazard. Protective gloves are obligatory.
Check whether boiler and equipment are installed and connected in accordance with these Technical
instructions. Check whether chimney meets requirements of point 3.0 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.

Note:

Before every use chech if the boiler doors and cover door are closed (Figure 4).

Slika 9. PelTec / PelTec-lambda boiler door

Left low boiler
door
(Behind the door is a box of ashes)

Upper boiler
door

Flue gas can lead to life-threating poisoning!

Boiler use

Flue gas tubes
door

Right low boiler
door
(Behind the door is a box of ashes)

Turbulators of flue gas
tubes

38

Technical instructions PelTec / PelTec-lambda

Cleaning and maintenance

7.0. CLEANING AN D MAINTENANCE

Every millimeter of soot on the exchange surfaces and in the flues means about 5 % more fuel
consumption. A clean boiler saves fuel and protects the environment.
Save fuel – always clean the boiler in good time!

IMPORTANT! The ash can be disposed of only in a metal container!

Cleaning interval

Boiler type Description

After spent 150-250 kg

of pellets

12kW

Discharge ash boxes

After spent 250-350 kg

of pellets

18kW

After spent 300-450 kg

of pellets

24kW

After spent 400-600 kg

of pellets

36-48kW

Emptying the ash box:

2 3 41

1. Take out ash boxes.

2. For carrying ash boxes, use a protective cover which is located on the inside of front
door. For boilers 18,24, 36 and 48 kW take out one by one box in order to
use the same cover (Figure 2).

3. Attach the cover to the 3 holes (Figure 3.4) .

4. Put the cover and ash box back to original position.

PROTECTIVE GLOVES ARE OBLIGATORY!!

Discharge ash boxes

Discharge ash boxes

Discharge ash boxes

39

Technical instructions PelTec / PelTec-lambda

Cleaning intervals

Checking the correctness of security valve

By briefly turning the cap of safety valve (C) check whether water coming
out from the safety valve. If no water comes out after several repeated
checks, then is necessary to replace the safety valve.

Cleaning interval

Boiler type Description

When needed

12-48 kW

Cleaning the blades and box of

the fan

Cleaning the blades and box of the fan

Cleaning interval Boiler type Description

Every 6 months

12-48 kW

Check the correctness of security

valve

A

C

V

3

Cleaning interval

Boiler type Description

At least once per year

(This procedure is very simple and is

recommends even more often)

12-48 kW

Cleaning of exchanging surfaces

(above the burner)

Claning of exchanging surfaces (above the burner)

1 - Press the ''maintenance'' on the regulation and then ''Boiler Cleaning''.
2 - Press ''START'' (it will start the fan and it will open a grate.)
3 - By using scraper, brush or vacuum cleaner, through the door clean exchanging surfaces
4 - After you finish cleaning, press ''back'' ( ) on regulation to control the boiler back to normal mode
and close the front door of the boiler.

1. Maintenance

Man. Boiler Cleaning

1.

2.

3.

Filling feeder screw

Airvent

Man. Boiler Cleaning

0%

2000

15k

1 2

1. Switch off the boiler and disconnect from electric. power.

2. Pull out the 7 pin connector (Figure 6) from boiler control unit. Then
unscrew four screws (V) and remove the fan, clean the fan blades (A),
check the condition of the fan box (B) and clean it when is necessary
by using vacuum cleaner or remove it from the boiler and clean
thoroughly.

3. Set back the fan into original position and secure it with screws,
then connect 7-pin connector on the M3 (see page 24, figure 5) and
connect the power supply to the boiler.

B

6

3.

Weighing

40

Technical instructions PelTec / PelTec-lambda

Cleaning intervals

Cleaning interval Boiler type Description

At least once per year

12 kW

Cleaning of exchanging surfaces

(around the entire boiler)

1. Press ''Maintenance'' on the regulation and then ''Cleaning the boiler''.

2. Press ''START'' (it will start the fan and it will open a grate.)

3. Lift the top cover (D), then unscrew the four screws and remove the
upper door (E).

4. By using scraper, brush and vacuum cleaner, through the upper side
and trough the front door clean exchanging surfaces(F,G).

5. When you have finished cleaning, set upper door back to
original position and tighten them well, then set the top cover
back to position and close the front door of the boiler. Then press
''back'' on the regulation ( ) to return boiler to normal
mode.

1. Maintenance

Man. Boiler Cleaning

0%

2000

15k

1 2

Metal vacuum cleaner

E

D

F

G

F

G

Cleaning interval Boiler type Description

At least once per year

18-48 kW

Cleaning of exchanging surfaces

(around the entire boiler)

1. Press ''Maintenance'' on the regulation and then ''Cleaning the boiler''.

2. Press ''START'' (it will start the fan and it will open a grate.)

3. Lift the top cover (D), then unscrew the four screws
and remove the upper door (E).

4. By using scraper, brush and vacuum cleaner, through
the upper side clean exchanging surfaces(F,G).

5. When you have finished cleaning, set upper door back to
original position and tighten them well, then set the top cover
back to position. Then press ''back'' on the regulation ( ) to
return boiler to normal mode.

Metal vacuum cleaner

D

E

18-48 kW

F

G

12 kW

Man. Boiler Cleaning

1.

2.

3.

Filling feeder screw

Airvent

3.

Weighing

1. Maintenance

Man. Boiler Cleaning

0%

2000

15k

1 2

Man. Boiler Cleaning

1.

2.

3.

Filling feeder screw

Airvent

3.

Weighing

Metal

tube

Metal

tube

41

Technical instructions PelTec / PelTec-lambda

Cleaning intervals

Cleaning interval

Boiler type Description

At least once per year

12-48 kW

Cleaning and checking the

flue installation sealing

Clean flue installation between the boiler and the chimney through the revision openings
for cleaning or if not incorporated revision opened by removing the flue installation. After
cleaning, inspect flue installation good sealing and seal it if the seal is not satisfactory.

Cleaning and checking the flue installation sealing

The ecological rules and standards must be applied for disposal of
changed spare parts, wrapping material, all parts of the boiler after it’s
expire.

1. Electric heater

2. Failure on distribution power box with digital boiler control unit

3. Fan failure

4. Pellet feeder Motor failure

5. Temperature sensors failure

6. Photocell failure

Every seven years to call an authorized service provider for routine maintenance and
control.

Cleaning interval

Boiler type Description

At least once a year

(or if you have problems

with the ignition)

18-48 kW

Photocell cleaning

Dirty photocell which can result
error in ignition or flame dissapear
error

Valid photocell

Carefully remove the photocell from the box and then gently with a cotton swab clean the body
and lens of photocell. After cleaning, carefully return photocell to work position.

Work position

42

Technical instructions PelTec / PelTec-lambda

Cleaning and maintenance

7.1. EXTRACTION O F TU RBULATORS

NOTE:

Place turbulators back in the same way but in the reverse order!
There are 1 or 2 sets of turbulators (depending on the model of boiler)

PROTECTIVE GLOVES ARE OBLIGATORY!

1 - Remove the casing cover.
2 - Unscrew the 4 srews and remove the flue ducts door.
3,4 - Unscrew the 2 srews and lift turbulators (first pass) with bracket as shown in picture.
5 - Unscrew the 2 srews from carrier on second pass.
6 - Remove all turbulators with carrier. (If you can’t remove all turbulators together, then
unscrew all screws on all turbulators (6.a) and remove turbulators one by one (6b).

4

1

2

3

5

6

6.a

6.a i 6.b Samo u slučaju da nije moguće odjednom izvaditi sve turbulatore (korak 6)

6.b

43

Technical instructions PelTec / PelTec-lambda

7.2. EXTRACTION OF HELICAL METAL PLATE FROM SECOND PASS
TURBULATORS

For extracting of helical metal plate from turbulators is neccessary to unscrew nut and pull out helical
metal plate from the bottom. With this action the flue gas temperature (in boiler work) will be increased
but if there si no other solution for chimney condensation prevention (reduction to acceptable level)
that procedure is neccessary.

Turbulatior with helial metal plate

Extracted helical metal plate

This procedure should do only authorized serviceman!

Extraction of helical metal plate from second pass turbulators

PROTECTIVE GLOVES ARE OBLIGATORY!!

44

Technical instructions PelTec / PelTec-lambda

7.3 REPLACEMENT OF THE ELECTRIC HEATER

7.3.1 REPLACEMENT OF THE EL.HEATER WITH NEW EL. HEATER DIAMETER Ø35mm

Replacement of the electric heater

Electric heater with a diameter of Ø 35 mm

1. Unplug the safety pressure switch tube (detail A), and disconnect the wires of the electric heater
from the terminal block (Detail B).

2. Unscrew the 4 screws and remove the primary air regulation. Then unscrew the 2 heater holder screw
and pull out heaters holder together with the el. heater.

The heater holder

(Heater holder is identical with
heaters diameter Ø20mm and
Ø35mm)

Heater clamp for heater
diameter Ø35mm

The heater holder with clamp for electric heater with
a diameter of Ø35 mm

45

Technical instructions PelTec / PelTec-lambda

Detail A

Detail B

Replacement of the electric heater

3. Unscrew the two screws and remove the heater clamp. Insert the new el. heater, turn it so that

the shaft at the front part of the el heater is turned vertically (see detail C) and gently attach it
to the heater holder (Still not fully tightened).

4. Place the el. heater with the holder in place and fasten it with two screws. The heater set to the inner

edge of the hole burner (see detail D). If necessary, loosen the clamp of the heater holder and push the
holder until the edge of the burner hole and then tighten the clamp. Place the primary air regulation and
connect with 4 screws. Connect the el. heater wires to the terminal block (detail B) and connect pressure
switch tube (detail A).

(Shaft at the front part of the

el. heater is turned vertically)

Detail C

Detail D

To the inner edge of the burner hole.

46

Technical instructions PelTec / PelTec-lambda

Detail A

Detail B

The heater holder with clamp for electric
heater with a diameter of Ø 20 mm

The upper part of the heater
clamp diameter Ø20mm

The lower part of the heater
clamp diameter Ø20mm

Replacement of the electric heater

7.3.2 REPLACEMENT OF THE EL.HEATER WITH NEW EL. HEATER DIAMETER Ø20mm

Electric heater with a diameter of Ø 20 mm

The heater holder

(Heater holder is identical with
heaters diameter Ø20mm and
Ø35mm)

1. Unplug the safety pressure switch tube (detail A), and disconnect the wires of the electric heater
from the terminal block (Detail B).

2. Unscrew the 4 screws and remove the primary air regulation. Then unscrew the 2 heater holder screw
and pull out heaters holder together with the el. heater.

47

Technical instructions PelTec / PelTec-lambda

Detail A

Detail B

(Shafts at the front part

of the el. heater are

turned vertically)

Detail C

3. Unscrew the two screws and remove the heater clamp. Insert the new el. heater, turn it so that

the shafts at the front part of the el heater are turned vertically (see detail C) and gently attach
it to the heater holder (Still not fully tightened).

Replacement of the electric heater

Detail D

To the inner edge of the burner hole.

4. Place the el. heater with the holder in place and fasten it with two screws. Set the heater to the inner

edge of the hole burner (see detail D). If necessary, loosen the clamp of the heater holder and push the
holder until the edge of the burner hole and then tighten the clamp. Place the primary air regulation and
connect with 4 screws. Connect the el. heater wires to the terminal block (detail B) and connect pressure
switch tube (detail A).

48

Technical instructions PelTec / PelTec-lambda

Detail A

Detail B

49

Technical instructions PelTec / PelTec-lambda

HEATING TECHNIQUE

www.centrometal.hr
e-mail: [email protected]

Centrometal d.o.o. Glavna 12, 40306 Macinec, Croatia

central tel: [phone], fax: [phone]
service tel: [phone], fax: [phone]

Company assumes no responsibility for possible inaccuracies in this book originated typographical errors or rewriting, all the pictures and diagrams are principal and it is necessary to adjust each actual situation
on the field, in any case the company reserves the right to enter their own products such modifications as considered necessary.

TUPLT/PLT-L-10-2017-sms-pg-ENG