Centrometal PelTec 12 Owner's manual

PelTec 12-48
PelTec-lambda 12-96
TECHNICAL INSTRUCTIONS
for installation, use and maintenance
of hot water boiler
and installation of additional equipment
THE FIRST START-UP MUST BE DONE BY AUTHORIZED PERSON,
OTHERWISE PRODUCT WARRANTY IS NOT VALID.
HEATING TECHNIQUE
Centrometal d.o.o. - Glavna 12, 40306 Macinec, Croatia, tel: [phone], fax: [phone]
TU-PLT/PLT-L-12-96-10-2021-ENG
ENG

2Technical instructions PelTec-lambda
Technical data
TECHNICAL INFORMATION
* possible way of installing the fan (output is directed up)
** possible way of installing the fan (output is directed sideways)
**** PM = particulate matter, OGC = organic gaseous compounds, CO = carbon monoxide, NOx = nitrogen oxides
*** dT=20°C
Contact details: Centrometal d.o.o. - Glavna 12, 40306 Macinec, Croatia
Model identifier (TYPE):
Boiler body
dimensions
Length (A)
Width (B)
Height (C)
n
Boiler
connections
Main/return flow (thread)
Filling/drainage (thread)
Useful heat output at rated heat output - P
Useful heat output at 30 % of rated heat
output - P
Useful efficiency at rated heat output
(Net calorific value "NCVar")
Useful efficiency at 30 % of rated heat output
(Net calorific value "NCVar")
Useful efficiency at rated heat output
(Gross calorific value "GCVar") - η
Useful efficiency at 30 % of rated heat output
(Gross calorific value "GCVar") - η
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
Operating (combustion) time
Min. inlet water tem. at the boiler supply water connection
Setting range for temperature controller
Minimum return flow temperature
Heat loss when the boiler is OFF
Boiler resistance on water side at nominal output ***
Fuel size
Fuel loading chamber capacity
Fuel loading chamber dimensions
Combustion chamber volume
Combustion chamber type
Pellet tank volume
Ash box volume (left/right)
Auxiliray power requirements at Q
Auxiliray power requirements at Q
Supply voltage
Frequency
Total mass - (boiler with tank and screw feeder)
Max. operating overpressure
Test pressure
Max. operating temperature
Flue gas tube - external diameter
Dimension D*/D**
Dimension E
Dimension F
Heating appliance working
Heating appliance working
Stoking mode
The boiler should be operated with a hot water storage tank
of a volume of at least
Condensing boiler
Solid fuel cogeneration boiler
Combination boiler
Preferred fuel
Seasonal space heating energy
efficiency - η
min
N
S
Seasonal space
heating emissions
for preferred fuel ****
Auxiliary electricity
consumption
(%)
mg/m³ (10% O2)
mg/m³ (10% O2)
mg/m³ (10% O2)
mg/m³ (10% O2)
(kW)
(kW)
(kW)
(kW)
p
12
3.6
90.4 / 93.8
90.2 / 90.7
82.6 / 86.4
82.4 / 83.4
3.6-12
78
15.16
5.82
0.025
0.942
41.85
340
9.9 / -
1050
1105
1200
1560
328
130
1515 / 1235
135
555
5/4"
240
78
22 / 19
3 / 5
245 / 167
167 / 138
(kW)
(kW)
(%)
(%)
(%)
(%)
(kW)
(mbar)
(l)
(°C)
(°C)
(g/s)
(g/s)
(h)
(°C)
(°C)
(°C)
(W)
mbar
(mm)
(l)
(mm)
(l)
(l)
(l)
(W)
(W)
(V~)
(Hz)
(mm)
(mm)
(mm)
(kg)
(bar)
(bar)
(°C)
(mm)
(mm)
(mm)
(mm)
(G)
(G)
(l)
PM
OGC
CO
NOx
At rated heat
output - el
At 30 % of rated
heat output - el
Of incorporated secondary
emission abatement equipment
In standby mode - P
0.040 /
0.055
0.025 /
0.039
18
5.4
90.3 / 93.9
90.4 / 92.1
82.6 / 86.5
82.6 / 84.9
5.4-18
76
18.97
6.91
0.055
1.59
58.5
340
6.5 / 9.9
1050
1105
1420
1560
349
130
1040 / 765
125
510
5/4"
360
78 / 80
24 / 21
2 / 3
208 / 117
180 /138
0.043 /
0.066
0.028 /
0.039
24
7.2
90.3 / 94.1
90.6 / 93.5
82.5 / 86.7
82.8 / 86.1
7.2-24
100
22.78
8.0
0.095
1.59
58.5
340
9.9 / 9.9
1050
1080
1400
1560
402
130
1140 / 855
130
495
5/4"
480
79 / 82
25 / 23
1 / 2
170 / 67
192 / 138
0.045 /
0.076
0.030 /
0.039
36
10.8
90.8 / 92.8
90.7 / 94.2
83.0 / 85.5
82.9 / 86.8
10.8-36
108
35.27
13.1
0.205
2.56
91.90
340
11.6 / 17.7
1100
1160
1485
1560
455
150
1160 / 855
120
555
5/4"
720
79 / 83
26 / 22
1 / 2
132 / 90
180 / 139
0.048 /
0.086
0.033 /
0.043
Not applicable
0.005 / 0.006
max
min
48
14.4
91.2 / 91.5
90.7 / 94.9
83.4 / 84.3
82.9 / 87.4
14.4-48
135
47.75
18.05
0.37
2.56
114.13
340
13 / 19.6
1100
1175
1485
1560
478
150
1310 / 995
115
555
5/4"
960
79 / 83
26 / 21
0 / 2
93 / 113
167 / 141
0.050 /
0.096
0.035 /
0.046
69
20.7
92.0
93.9
84.7
86.5
20.7-69
190
59.05
23.85
0.17
4
129.26
430
24.5 / 19.6
1300
1240
1940
1560
730
200
1345 / 1305
150
660
6/4"
1380
83
20
3
110
139
0.098
0.059
96
28.8
92.7
92.7
85.4
85.4
28.8-96
205
73.57
31.34
0.32
5.4
145.33
430
29 / 25
1300
1310
1965
1560
830
200
1345 / 1305
150
660
6/4"
1920
82
18
1
107
136
0.100
0.075
SB
n
p
PelTec /
PelTec-
lambda 12
PelTec /
PelTec-
lambda 18
PelTec /
PelTec-
lambda 24
PelTec /
PelTec-
lambda 36
PelTec /
PelTec-
lambda 48
PelTec-
lambda 69
PelTec-
lambda 96
PelTec /
PelTec-
lambda 31
465x300x300 650x300x300 650x300x300
-
-
65-90
> 0°C
-
Ø6 x 50
620x385x385
underpressure
-
230
50
2.5
5
90
1/2"
with fan
under non-condensing conditions
automatic
no
no
no
compressed wood in the form of pellets: C1 (EN 303-5:2012); A1 (EN ISO 17225-2)
130
100
5
0,02
770x385x385 770x385x385 770x450x410
31
9.4
90.5 / 93.3
90.6 / 93.9
82.7 / 85.9
82.8 / 86.5
9.4-31
108
35.27
13.1
0.205
2.56
91.90
340
11.6 / 17.7
1100
1160
1485
1560
455
150
1160 / 855
120
555
5/4"
620
79 / 83
25 / 22
1 / 2
148 / 78
185 / 139
0.047 /
0.082
0.032 /
0.041
0.006 0.005
620x385x385

Dimensions of the boiler to enter the room
Width (G)
Depth (H)
Height (I)
Min. room height for turbulators removing (J)
650
760
1560
1900
880
760
1275
1700
855
760
1340
1700
945
840
1340
1700
945
840
1490
2000
12 kW 18 kW 24 kW 48 kW31/36 kW
J J J J
Technical data
3
Technical instructions PelTec-lambda

Dimensions of the boiler to enter the room
Width (G)
Depth (H)
Height (I)
Min. room height for turbulators removing (J)
* height can be adjusted +30 mm from this dimension
1220
815
1550 (+30 mm)*
2050 (+30 mm)*
1245
885
1530 (+30 mm)*
2050 (+30 mm)*
69 kW 96 kW
Technical data
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
SG¹ - Safety airvent group (not included in delivery)
PG - Pump group
PE - Connection for expansion vessel
FC - Flexible PVC tube
TP - Thermal protection exchanger (only 69/96)
TU - Temp. sensor tube (probe)
TPC - Cover lid - thermic valve sensor probe
OP - Cover lid - boiler sensor
RE - Regulation
AB
C
B
12kW
B
C
RE
RE
C
RE
Front view Side view
12-48kW18kW 24-48kW
B A
69/96 kW
RE
Front view Side view
I
H
69/96 kW
G
69/96 kW
J
69/96 kW
C
4Technical instructions PelTec-lambda

* possible way of installing the fan (output is directed up)
** possible way of installing the fan (output is directed sideways)
Dimensions and basic parts of the boiler
PVV
PP
PelTec /
Peltec-lambda
12
SG ¹
PT
RP
FC
PVV
PE
PLV
PG
SP
VE DP
E
F
D** D*
PT
SP
RP
SG ¹
E
F
D**
D*
FC PE PP
DP
VE
PG
PLV
SG ¹
RP
PT
SP
FC PE PP
DP
VE
F
D**
D*
E
PVV
PLV
PG
SG ¹
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
TU
TU
TU
TU
PVV
PelTec-lambda
69/96
D** D*
PP
PE
TU
PT
SP
RP
SG ¹
EF
FC
TP
PLV
PLV
TPC OP
NOTE:
- main flow tube (probe) and sensor are used only in scheme 2 (DHC), 3 (DHCIIDHW) and 12 (DHCIIDHW(2))
- at boilers 69/96 for this schemes sensor tube (probe) is delivered and must be installed on the main flow, close after
4-way mixing valve (drill hole and make thread M10x1)
- sensor tube (probe) must be sealed
Back view - PelTec / PelTec-lambda 12-48
Back view - PelTec-lambda 69/96
¹ not included in delivery
5
Technical instructions PelTec-lambda

Basic parts and sensors
1 - Boiler sensor ( 5k)NTC
2 - sensor ( 5k)DHW NTC
3 - Pressure switch
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
10 - Main flow sensor (NTC 5k)
ADDITIONAL EQUIPMENT
*
**
depending on the configuration can be used as: DHW sensor, flow temperature sensor,
accumulation tank sensor (CAS), hydraulic crossover (CRO)
only PelTec-lambda
only PelTec-lambda 69/96 - boiler sensor is located in the sensor tube in the boiler main flow
tube (below boiler casing cover)
*
**
11 - Return flow
sensor (NTC 5k)
12 - Lambda probe
13 - Outdoor sensor (NTC 5k)
69/96
11
4
3
5
12
PelTec-lambda 18-96 kW
12
PelTec-lambda 12 kW
24-96 kW
11
1
2
4
3
5
4
3
5
12 kW 18 kW
***
**
18-48kW
10 *
76
8
11
12 kW
11
10 *
8
76
9
67
8
10 *
11
99
1
13
*
***
***
***
CAL - alarm
box
(speaker/
LED)
CM2K module
for regulation
2+ heating
circuits
CMNET module
for boiler
cascade
GSM Alarm
module
for mobile
network
Pelet
suction
system
Cm wifi-box
(Internet
supervision)
Increasing
volume
of pellet tank
(+77kg, h=300mm)
(12-48 kW)
- Ash screw
(only 69/96)
- Rotary valve
Screw refill
(CPSP-BP 800 -
System for the
pellet supply
by the screw
transporter
from 800
lit. pellet tank)
Room corrector
(CSK-Touch)
6Technical instructions PelTec-lambda

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
7
Technical instructions PelTec-lambda

1.4. STATUS OF DELIVERY
Status of delivery
1.4. STATUS OF DELIVERY 1.4. STATUS OF DELIVERY
Equipment is delivered seperately:
1. Boiler with planking and thermal insulation
With inbuilt and pre-wired:
- color touch screen display control unit
- boiler temperature sensor - NTC 5K - PVC l=1000 (12041)
- flue gas temperature sensor - PT 1000 - Teflon l=1700 (62330)
Additional parts, sensors and connectors in basic delivery:
- lambda probe (only for PelTec-lambda 69/96)
- 1 x return flow temperature sensor - NTC 5K - PVC l=2000 (26226)
- 2 x (main flow temperature sensor / DHW temperature sensor / Acc. (buffer) tank temperature sensor /
Hydraulic crossover temperature sensor) - NTC 5K - PVC l=2000 (26226)
- 1 x outdoor temperature sensor - NTC 5K (31428)
- connector 3 pin female - (blue) (62329)
- connector 3 pin female - (brown) (26979)
- connector 3 pin female - (green) (25850)
2. Grate cleaning mechanism (requires installation on the boiler)
3. Fan (requires installation on the boiler)
4. Pump group (Tubes with 4-way mixing valve with actuator and circulation pump (need to be mounted on boiler,
Obligatory: set the 3-speed pump on the speed 3 or max power for HE pumps.)
5. Thermic protection valve (Caleffi 543, 98°C) - only PelTec-lambda 69/96
6. Pellet tank in a cardboard box (the parts need to be mounted, see instructions for mounting the pellet tank)
7. Feeder screw with a flexible PVC tube (should be placed in the pellet tank)
8. Thermal insulation of the connection flue gas tube between fan and chimney
Figure 1. Status of delivery
12 kW Pellet tank
Boiler
Feeder screw
Grate cleaning
mechanism
Pump groups
12kW 18-36kW
48kW
69/96kW
18-48 kW
Boiler
Fan
Feeder screw
Pellet tank
69/96 kW
Fan
Boiler
Grate cleaning
mechanism
Feeder screw
Pellet tank
Thermal insulation of the connection
flue gas tube between fan and chimney
8Technical instructions PelTec-lambda

Positions of mounted components
Seal
Socket for temp. sensor PelTec 12-48
Socket
PelTec/PelTec-lambda
12
Pump groups
PelTec/PelTec-lambda
18-36 PelTec/PelTec-lambda 48
Example of installation pump group to the boiler
PelTec/PelTec-lambda 18-36
Socket
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 or max. power for HE pumps.
NOTE: check the tightness of connection tubes. Fasten connections binding tubes if necessary, so
that a good seal.
PelTec-lambda
69/96
Socket for temp. sensor PelTec-lambda
69/96
Socket in elbow
(return flow)
*Only PelTec /
PelTec-lambda 48
1 - Boiler pump P1
2
2 - Angled T-piece -
return flow
2
3 - 4-way mixing
valve
2
4 - Motor actuator
2
5 - Connecting pipe
2
6 - T-piece -flow
2
7 - Lower pipe
2
8 - Return flow
sensor tube
2
9 - Main flow
sensor tube
*
LEGEND:
1
2
4
9
5
6
7*
8
3
1
2
5
6
4
9
38
12 9
4
5
6
3
8
6
5
5
5
1
4
3
2
8
9
Socket
(main flow)
9
Technical instructions 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
10 Technical instructions PelTec-lambda

Mounting parts
1.5. MOUNTING COMPONENTS
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 rpm sensor 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
11
Technical instructions PelTec-lambda

1.5.1. MOUNTING MECHANISM FOR GRATE CLEANING
1. Remove the three screws (A), from cover (B) of the grate cleaning mechanism and remove cover
carefully .
A
BB
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
12 Technical instructions 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
13
Technical instructions PelTec-lambda

Setting photocell on the work position
Before first startup, be sure to set the photocell to the position as on
the figures below, otherwise the boiler will not work properly!
The photocell should not be set too deep or too shallow in the box. Because of this, there is an limiter by
which correct photocell dept is set. Check if the limiter is adjusted aacording the photos below. (factory
deliver - black photocell; as a spare part - red photocell).
1.5.2. SETTING PHOTOCELL TO THE WORK POSITION
Limiter Limiter
fastening
screw
57 mm
Mark
Limiter must be set so little black mark
is visible according the picture
(partitialy covered by limiter)
Carefully install photocell into
flange on the box to the limiter (so it clicks)
Photocell at delivery
Carefully install photocell into flange
on the box to the limiter (so it clicks)
Correctly installed photocell
Boiler ready for operation
Correctly installed photocell
Boiler ready for operation
Factory installation position and distance
photocell flange and limiter, ready for
installtion
40 mm
FlangeLimiter
14 Technical instructions PelTec-lambda

Installation of the handle on the casing cover door
1.5.3. INSTALLATION OF THE HANDLE ON THE CASING COVER DOOR
Status of
delivery
(24-48kW)
2.
3.
1.
15
Technical instructions PelTec-lambda

1.6. SAFETY ELEMENTS
1.7. FUEL
Safety elements, fuel
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. Pellets used in pellet boiler must be in
accordance with following norms: ENplusA1, DINplus, ONorm-M-7135 or DIN 51731.
Recommended properties of pellets are following:
- heating value >= 5 kWh/kg (18 MJ/kg)
- diameter <= 6 mm
- max. lenght = 50 mm
- max. moisture content <= 12 %
- max. dust content <= 1,5 %.
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 boiler stops working and the E8, E8-1 or E8-2 and "Pellet
supply tube temperature too high" are displayed on the controller screen.
- Pressure switch - if there is no underpressure in the boiler (eg. chimney is not passable, any boiler
door or cleaning opening is open or the PVC pellet supply pipe is punctured), the controller displayed
E12 and "Safety pressure switch", and the boiler stops working.
- Photocell - in case there is no flame (photocell does not see flame) in the ignition phase at the set
time, the controller displays E18 and "No flame in ignition stage" and stops the boiler, if the flame
disappears in the ignition phase, the control displays E23 and "Flame disappeared in ignition stage"
and stops the operation of the boiler, if the flame disappears in the stabilization phases, the controller
displays E24 and "Flame disappeared stabilization stage" and stops the boiler, and if the flame
disappears in the phases of boiler operation, the controller displays E19 and "Flame disappeared
working phase" and stops the boiler operation.
- Controller 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 error E13 and "Fan error"
- The grate cleaning mechanism has two built-in microswitches that monitor the position of the grate.
If the grate is not in the required position at a certain moment, the controller receives this information
and interrupts the operation process, and E21 and "Error grate cleaner" will appear on the display.
- Flue gas connection have in-built sensor for flue gas temperature meassuring. If flue gas tube
temperature is over 300 °C, controller interrupt proces and display information E4 and "Flue gas
sensor error»
- STB thermostat - When temperature in the boiler exceeds 110°C (+0°C / - 9°C), power supply is
turned off by the safety thermostat (STB).
- Thermal protection (built in coils of the fan electric motor at the burner and the screw feeder motor,
flue pipe cleaning, grate cleaning) protects them against overheating caused by failure or locking.
- Flexible PVC 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.
- PelTec-lambda 69 and 96 have build in thermal protection exchanger. Thermal protection valve
must be installed to it and connected to the water suppy to provide boiler cooling in case of
overheating (thermal protection valve is in standard delivery, Caleffi 543, 98°C ).
16 Technical instructions PelTec-lambda

2.0. BOILER POSITIONING AND ASSEMBLY
2.1. MINIMUM DISTANCE FROM THE ROOM WALLS
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 (FRESH AIR SUPPLY)
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 frost-
proof and well ventilated. Boiler has to be positioned so that it can be properly connected to the chimney
(see Figure 5) 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 5.
Q - boiler output in kW
2
A - opening area in cm
Boiler positioning
Figure 5. Minimum distance from the room walls for PelTec / PelTec-lambda
1
Boiler PelTec / PelTec-lambda
Chimney
Flue gas tube (Chimney connection; must be insulated)
-
-
2
3
-
1
-
-
2
3
-
min.
550 mm
min.
1000 mm
min.
450 mm
3
1
min. 300 mm
max. 1500 mm
1
2 2
3
min. 300 mm
max. 1500 mm
min.
550 mm
min.
1000 mm
min.
450 mm
PelTec/PelTec Lambda 12-48 PelTec-lambda 69/96
17
Technical instructions PelTec-lambda

Figure 6. Dimensioning of the chimney for PelTec / PelTec-lambda
3.0. CONNECTION TO THE CHIMNEY
The chimney must be resistant against flue condensate!
Properly 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 temperature of their condensation point. The choice and the
construction of the chimney has to be performed by the authorized person. Inner diameter of the chimney must
be selected according the possible effective chimney height and boiler power and according diagram below.
Chimney must be dimensioned by "diagram for chimney selection" and maximum permitted length of
connection flue gas tube between connection on fan and chimney is 2000 mm and minimum inner diameter
clear cross-section of 130 mm for PelTec / PelTec-lambda 12/18/24 and 160 mm for PelTec / PelTec-lambda
31/36/48, 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 considering of exit point from fan.
Connection flue gas tube must have openings for cleaning through which is possible to clean entire length 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
10-50 kW
60-100 kW
50
40
30
20
10
3456 7 8 9 10 11 12 13
160
150
130
180
200
3456 7 8 9 10 11 12 13
100
90
80
70
60
200
220
250
Boiler heat output: 24 kW 69 kW
Required usable chimney height: 7,5 m 5 m
Required inner chimney diameter: 130 mm 200 mm
Fuel: wood pellets
Chimney dimensioning examples:
for boiler PelTec / PelTec-lambda 24 and 69
NOTES:
For flue gas tubes up to 2 m and 2 flue gas elbows look at the diagram.
Un case of longer flue gas tube or there is more than 2 flue gas elbows, effective height must be selected from the diagram and for every additional
meter of the flue gas tube and/or every additional flue gas elbow, add following value to the effective height:
- PelTec(-lambda) 12-18: +0,5 m
- PelTec(-lambda) 24-48: +1,0 m
- PelTec-lambda 69-96: +0,5 m
In case of flue gas tubes longer than 5 meters, recommended is (or it’s neccessary) select flue gas tube for 10 mm biger than boiler output because
of ash deposits during the boiler working.
In any case, neccessary is to predict correct amount cleaning openigs for flue gas tube and elbows cleaning.
130
150
160
180
200
220
250
12
4,5
4
3,5
-
-
-
-
18
5,5
4,5
4
3,5
-
-
-
24
7,5
5,5
5
4
-
-
-
36
-
8
6,5
5,5
4,5
-
-
48
-
-
-
8,5
7
-
-
69
-
-
-
-
5
4,5
4
96
-
-
-
-
8
6
5
boiler power (kW)
inner chimney diameter (mm)
min. chimney effective height (m)
Chimney dimensioning examples:
18 Technical instructions PelTec-lambda

Installation of the connection flue gas tube thermal insulation
3.1. INSTALLATION OF THE CONNECTION FLUE GAS TUBE
(BETWEEN FAN AND CHIMNEY) THERMAL INSULATION
1. 2. 3.
1. 2. 3.
B
c
D
A
max. 160 mm
A
1/21/2
a) A </= 1200 b) A > 1200
max. 160 mm
(15 x)
1200 mm
1200 mm
1/21/2
A-1200
(15 x)
B or D
1/21/2
D or B
C
1200 mm
EXAMPLE 1
EXAMPLE 2
19
Technical instructions 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
1
24
3
1 - Safety ventilation group connection
2 - Expansion vessel connection
PelTec /
PelTec-lambda
18-36
1
3
4
2
PelTec /
PelTec-lambda
48
23
4
1
3 - Main flow to installation
4 - Return flow from installation
PelTec-lambda
69/96
1
2
3
4
20 Technical instructions PelTec-lambda