BLT reference number: 153/04 BLT approval number: 012/05

(replaces BLT reference number: 090/98) (replaces BLT approval number: 016/99)

Pellet burner 

PELLEMATIC PE32

Applicant and manufacturer: 

ÖkoFEN Forschungs- und 

Entwicklungs Ges.m.b.H. 

Mühlgasse 9 

4132 Lembach i. M., Austria 

3250 Wieselburg, Austria Rottenhauser Strasse 1 

Tel.: +43 7416 52175 – 0, Fax: +43 7416 52175 – 45

blt@josephinum.at, http://blt.josephinum.at 

TEST REPORT
The BLT Wieselburg is an accredited burner test centre issued with identification number 112 according to 

accreditation law BGBl. no. 468/1992. The quality management system is compliant with the requirements of 

ÖVE/ÖNORM EN ISOIEC 17 025. 

Rottenhauser Strasse 1 

3250 Wieselburg 

Austria / Österreich

Phone: +43-7416-52175-0

Fax: +43-7416-52175-45

E-mail: blt@josephinum.at

Internet: http://blt.josephinum.at

The test results detailed in this test report exclusively refer to the test piece specified 

in the chapter “Boiler plate information”. 

The test report must be published only literally and unabridged. 

Exceptions must be authorized by FJ-BLT. 

Authorized translation 

In the event of doubt, the German original shall prevail 
Page I 

Pellet burner Pellematic PE32 

BLT reference number: 153/04 

TABLE OF CONTENTS 

Page 

1 DESCRIPTION ...................................................................................................................... 1

1.1 General...........................................................................................................................................1

1.2 Boiler plate information...................................................................................................................1

1.3 Diagram of the burner ....................................................................................................................2

1.4 Technical data................................................................................................................................2

2 TESTS AND RESULTS ......................................................................................................... 3

2.1 Test setup – measurement methods .............................................................................................3

2.2 Performance of heating tests .........................................................................................................4

2.3 Interpretation of emission measurements......................................................................................4

2.4 Investigatory heating tests with wood pellets at nominal heat output.............................................5

2.4.1 Emission measurements...................................................................................................6

2.4.2 Evaluation..........................................................................................................................6

2.4.3 Output-related measurements ..........................................................................................7

2.4.4 Flue gas composition ........................................................................................................8

2.5 Investigatory heating tests with wood pellets at minimum heat output...........................................9

2.5.1 Emission measurements.................................................................................................10

2.5.2 Evaluation........................................................................................................................10

2.5.3 Output-related measurements ........................................................................................11

2.5.4 Flue gas composition ......................................................................................................12

2.6 Surface losses..............................................................................................................................13

2.7 Water-side resistance of boiler ....................................................................................................13

2.8 Electrical power consumption ......................................................................................................14

2.8.1 Average electrical power consumption at nominal heat output, 

minimum heat output, during standby position and ignition ............................................14

2.8.2 Electrical power consumption of main loads ...................................................................14

3 SUMMARY OF RESULTS................................................................................................... 15

3.1 Heating tests ................................................................................................................................15

3.2 Function check of the temperature controller / safety temperature limiter on the boiler ..............16

3.3 Function check to verify the rapid shutdown of the burner system ..............................................16

4 ASSESSMENT .................................................................................................................... 16

5 APPENDIX .......................................................................................................................... 17

5.1 Legal requirements (for information only) ....................................................................................17

5.2 Surface temperature measurement points...................................................................................18
Page II 

Pellet burner Pellematic PE32 

BLT reference number: 153/04 

APPLIED STANDARDS

[1] ÖNORM EN 303-5:1999 Heating boilers for solid fuels, hand and automatically stoked, 

nominal heat output of up to 300 kW. 

[2] ÖNORM EN 304:1992/A1:1998 Heating boilers. Test code for heating boilers for atomising oil 

burners 

[3] EN 267:1999 Forced draught oil burners - Definitions, requirements, testing, 

marking 

[4] ÖNORM M 7135:2000 Compressed wood and compressed bark in natural state - Pellets 

and briquettes - Requirements and test specifications 

[5] DIN 4702-1:1990 Central heating boilers - Terms, requirements, testing, marking 

[6] DIN 4702-2:1990 Central heating boilers - Test code
Page 1 of 18 

Pellet burner Pellematic PE32 

BLT reference number: 153/04 

1 DESCRIPTION 

1.1 General 

The tested pellet burner PELLEMATIC PE32 manufactured by ÖkoFEN Forschungs- und 

Entwicklungs Ges.m.b.H. with a nominal heat output of 32.0 kW comprises a storage container, a 

fuel feeding system with integrated fire protection valve, the burner including burner plate, the flame 

pipe and the attached pipe heat exchanger with cleaning springs. The burner is equipped with 

electric ignition, an automatic cleaning system for the heat exchanger, a speed-controlled 

combustion fan and a microprocessor control system with associated switches and sensors.

A sheet metal storage container was used to perform the tests. An extraction screw transports the 

fuel through the entry pipe with integrated burn-back ball valve to the stoker screw. The stoker 

screw is driven by a gear motor and transports the fuel from below onto the heat-resistant steel 

burner plate. The fuel is ignited by an electric heating cartridge. The burner is regulated by a system 

using a combustion fan, the boiler temperature sensor and the combustion chamber temperature 

and pressure sensors to control the heat output. A radial fan directs the combustion air as the 

primary air flow through the fuel and as a secondary air flow to the fuel gas via a post-combustion 

ring in the flame pipe. The combustion gases then exit the flame pipe and flow into the heat 

exchanger. The heat exchanger is automatically cleaned by internal cleaning springs actuated by a 

motor. The ash from the heat exchanger and burner is collected in an ash drawer below the burner 

plate. The combustion chamber and heat exchanger are thermally insulated from the outside.

The ignition process is monitored by measuring the combustion chamber temperature. Once 

ignition has been successful, the control system switches to heating mode and controls the heat 

output level according to the required heat output. The fuel and combustion air quantities are preset 

for various heat output levels and then regulated during operation according to the boiler 

temperature and combustion chamber temperature.

1.2 Boiler plate information 
Page 2 of 18 

Pellet burner Pellematic PE32 

BLT reference number: 153/04 

1.3 Diagram of the burner 

Secondary air

Retort

Stoker screw

Fire protection valve

Combustion fan

Entry pipe

Intermediate container

1.4 Technical data 

Parameter – Overall dimensions of burner Value Unit

Overall length including burner and intermediate container 1200 mm

Overall depth including flue gas pipe connection 1160 mm

Overall height 1335 mm

Diameter of flue gas pipe 150 mm

Height to centre of flue gas pipe 480 mm

Flow/return connection 5/4 " 

Water capacity 101 l

Emptying outlet 1⁄2 " 

Thickness of sheets exposed to fire (stainless steel) 2 mm

Thermal insulation 40 – 100 mm

Total weight (boiler + burner + storage container) 493 kg

Source: Measurements by BLT Wieselburg

Parameter – Storage container (testbed) Value Unit

Container diameter 390 mm

Container height 740 mm

Source: Measurements by BLT Wieselburg
Page 3 of 18 

Pellet burner Pellematic PE32 

BLT reference number: 153/04 

2 TESTS AND RESULTS

Measurements were taken to determine the heat output, boiler efficiency (direct method), flue gas 

composition, flue gas temperature in the measuring section, feed pressure (draught), emission 

characteristics and electrical power consumption. The surface temperatures were measured at 

nominal heat output and stationary operation; this allowed the surface losses to be estimated.

The measurement equipment and measurement method correspond to ÖNORM EN 303-5:1999, 

ÖNORM EN 304:1992/A1:1998 and EN 267:1999. The measurement accuracy and measurement 

uncertainty are stated in documented procedures for verification in the quality management manual 

issued by the Federal Institute of Agricultural Engineering (Bundesanstalt für Landtechnik). 

2.1 Test setup – measurement methods 

BOILER TEST RIG WITH HEAT EXCHANGER: Heat output measurement by directly measuring 

the amount of water circulated through the heating circuit and its temperature increase (DIN 4702-

2:1990).

FLUE GAS EXTRACTION through a vertical measuring section, generating the feed pressure 

using a flue pipe, diameter 200 mm, height above ground level 9 m, feed pressure limited by 

draught limiting flap. 

HEAT OUTPUT MEASUREMENT: Determining the mass flow using the Coriolis mass flow meter 

PROMASS 63 F from Endress & Hauser, as well as the water temperatures at the boiler flow/return 

using a Pt 100 resistance thermometer, 1/3 DIN, calibrated as a pair.

FLUE GAS TEMPERATURE in the measuring section using a measurement system with 5 Pt 100 

resistance thermometers. 

FEED PRESSURE using ring balance. 

WATER-SIDE RESISTANCE: Differential pressure transducer with ceramic measurement 

membranes, DELTABAR S PMD 230 from Endress & Hauser.

CARBON DIOXIDE AND CARBON MONOXIDE CONTENT: Non-dispersive infrared gas analyser 

NGA 2000 from Emerson; carbon dioxide: lowest measurement range 0 – 5 %, highest 

measurement range 0 – 20 %; carbon monoxide: CO Low - lowest measurement range 

0 – 50 ppm, highest measurement range 0 – 2500 ppm, CO High - lowest measurement range 

0 – 1.0 %, highest measurement range 0 – 10 %; measured in dry flue gas. 

DUST CONTENT: Dust measurement unit from Ströhlein with a nominal extraction rate of 4 m3/h, 

dust separation on plugged quartz wool filter; filter directly behind the sample probe and angled 

section, determination of the partial flow using a dry gas meter and upstream drying tower. The 

sampling point for determining the dust content is immediately after the measuring section.

CONTENT OF ORGANIC GASEOUS SUBSTANCES: Flame ionisation detector from JUM, Type 

VE 5; samples taken via heated filter and heated pipe (thermostatically controlled to 180 °C); 

measured in damp flue gas.

NITROGEN MONOXIDE CONTENT: Gas analyser from ECO PHYSICS, Type CLD 700 El-ht;

chemiluminescent measurement principle, samples taken via heated filter and heated pipe; gas 

cooler; measured in dry flue gas.
Page 4 of 18 

Pellet burner Pellematic PE32 

BLT reference number: 153/04 

ELECTRICAL POWER CONSUMPTION Modular energy meter ULYS ETD from ENERDIS, threephase 100-400 with a measurement accuracy for active energy corresponding to IEC 

61036/EN61036 Cl.1. Maximum resolution of the pulse output: 0.1 Wh. 

AC power analyser D5155 from NORMA with the following characteristics: measurement of voltage, 

current, active power, reactive power with a measurement accuracy of +/- 0.1 % of measured value 

+ 0.1 % of full scale for voltage and current and +/- 0.5 % of measurement range for active power.

DATA LOGGING using TopMessage data logging system from Delphin Technologie AG, sampling 

interval 1 second, average value determined from 10 measurements, average data stored to media. 

2.2 Performance of heating tests 

HEAT OUTPUT: Measurements were carried out in accordance with ÖNORM EN 303-5:1999 at 

nominal and minimum heat output respectively (≤ 30 % of the nominal heat output). The nominal 

heat output measurements were performed after the burner had been operated for at least 3 hours 

in the nominal heat output range. The measurements themselves were taken over a test period of 

at least 6 hours. The efficiency was calculated by taking into account the heat stored in the boiler 

water. 

EMISSIONS: Carbon dioxide, carbon monoxide, organic carbon and nitrogen oxide values were 

averaged over the whole test duration. When determining the dust content, the extraction time per 

filter was limited to 30 minutes. The dust content was determined from 6 half-hourly averages, 

evenly distributed over the test duration. Calibration gases were used to check the gas analysers 

before and after every test period.

SETTINGS: The declared measurements relate to reproducible tests using optimised settings. The 

settings were made during preliminary tests based on manufacturer recommendations. The aim 

was to maximise the carbon dioxide content whilst at the same time minimising the carbon 

monoxide content. 

FUEL: The measurements were performed with wood pellets compliant to ÖNORM M 7135:2000, 

having a diameter of 6 mm and a water content of 6.7 % and 6.6 %. The water content was 

measured; the average values for the basic chemical data relating to the water and ash-free 

substances as well as the calorific value were taken from ÖNORM M 7132:1998.

FUNCTION CHECK of the temperature controller, safety temperature limiter and monitor as well as 

a functional check to verify the rapid shutdown of the burner system. The measurements were 

performed as specified in 5.13 and 5.14 of ÖNORM EN 303-5:1999.

2.3 Interpretation of emission measurements 

The emission measurements were analysed by calculating the complete flue gas analysis using the 

carbon monoxide and carbon dioxide content averaged over the measurement period together with 

the fuel composition data. The speed of the flue gas at the measuring point was calculated from the 

flue gas volume and taking into account the pressure and temperature.

The organic gas substances content was measured in the damp flue gas; the emissions were then 

converted for dry flue gas conditions and declared as organic carbon. The nitrogen oxide content 

was measured in the dry flue gas and declared as NO2.
Page 5 of 18 

Pellet burner Pellematic PE32 

BLT reference number: 153/04 

2.4 Investigatory heating tests with wood pellets at nominal heat output 

Test name Nominal heat output

 Number of test: HKA_1217 

 Name of boiler: Pellet burner PELLEMATIC PE32 

 Nominal heat output: 32 kW 

 Minimum Average Maximum 

 value value value 

Test conditions 

 Start of test: 2005-01-10 10:03 

 End of test: 2005-01-10 16:06 

 Test duration: 06:03 

 Ambient temperature: °C 17.9 20.8 26.8 

 Outside temperature: °C 2.1 5.8 7.2 

 Air pressure: mbar 1003 

Test fuel, heat input 

 Test fuel Wood pellets 

 Water content kg/kg 0.067 

 Ash content kg/kg 0.002 

 Carbon content kg/kg 0.473 

 Hydrogen content kg/kg 0.058 

 Oxygen content kg/kg 0.400 

 Calorific value of anhydrous 

 and ash-free substance MJ/kg 19.0 

 Calorific value of test fuel MJ/kg 17.5 

 Applied fuel quantity kg 43.4 

 Hourly fuel quantity kg/h 7.2 

 Fuel heat input kW 34.9 

Heat output, efficiency 

 Water circulation kg/h 1364.5 1371.4 1377.6 

 Flow temperature °C 51.8 52.7 53.2 

 Return temperature °C 71.6 72.6 73.5 

 Temperature difference K 19.1 20.0 20.7 

 Heat output in the 

 boiler circuit kW 31.9 

 Utilisation % 99.7 

 Boiler efficiency % 91.4 

Measured values flue gas measuring section 

 Flue gas temperature °C 129.6 130.9 131.8 

 Manometric pressure (draught) Pa 12.2 13.3 15.9 

 Carbon dioxide % 11.0 13.2 15.5 

 Carbon monoxide ppm 15.5 36.6 144.3 

 Organic gaseous substances ppm 0.0 0.0 1.7 

 Nitrogen monoxide ppm 80.8 98.2 115.5 
Page 6 of 18 

Pellet burner Pellematic PE32 

BLT reference number: 153/04 

2.4.1 Emission measurements 

Measurement results test: HKA_1217

(Calculation depending on CO2-measurement)

Suction start: hh:mm 10:10 11:10 12:10 13:10 14:10 15:10

Suction period: min 30 30 30 30 30 30

Measured CO2-content: % 13.2 13.2 13.4 13.2 13.5 13.0 

Calculated O2-content: % 7.2 7.2 7.1 7.3 7.0 7.5 

Density of gas sample: 

Dry gas kg/Nm3 1.36 1.36 1.36 1.36 1.36 1.36 

Humid gas kg/Nm3 1.30 1.30 1.30 1.30 1.30 1.30 

Water content g/Nm3 78.9 78.8 79.5 78.5 80.2 77.3 

Velocity: 

at sampling point m/s 1.25 1.25 1.24 1.25 1.22 1.27 

at probe head m/s 1.05 1.01 1.06 1.08 1.18 1.22 

Dust content: 

separated mg 12.7 11.8 12.1 12.3 11.9 12.3

 

Spec. dust content mg/Nm3 22.7 21.9 21.4 21.4 18.9 18.8 

2.4.2 Evaluation 

 relating to relating to 

 applied energy O2-content of 

 10 % 13 % 

 mg/MJ mg/Nm3 mg/Nm3

 Dust 8 17 12 

 Carbon monoxide (CO) 17 37 27 

 Organic 

 gaseous substances(OGC) <1 <1 <1 

 Nitrogen oxides (NOx) 77 162 117 
Page 7 of 18 

Pellet burner Pellematic PE32 

BLT reference number: 153/04 

2.4.3 Output-related measurements 

0 60 120 180 240 300 360

Time [min]

0

10

20

30

40

50

60

[kW]

Heat output

HKA_1217

0 60 120 180 240 300 360

Time [min]

0

50

100

150

200

250

300

[°C]

Flue gas temp.

Flow temp.

Return temp.

HKA_1217
Page 8 of 18 

Pellet burner Pellematic PE32 

BLT reference number: 153/04 

2.4.4 Flue gas composition 

0 60 120 180 240 300 360

Time [min]

0

4

8

12

16

20

24

CO2 [%]

0

25

50

75

100

125

150

CO [ppm]

Carbon dioxide

Carbon monoxide

HKA_1217

0 60 120 180 240 300 360

Time [min]

Dust

0

25

50

75

100

125

150

Dust [mg/Nm3]

Organic C

0

25

50

75

100

125

150

OGC, NOx [ppm]

Nitrogen oxide

HKA_1217
Page 9 of 18 

Pellet burner Pellematic PE32 

BLT reference number: 153/04 

2.5 Investigatory heating tests with wood pellets at minimum heat output 

Test name Minimum heat output

 Number of test: HKA_1218 

 Name of boiler: Pellet burner PELLEMATIC PE32 

 Nominal heat output: 32 kW 

 Minimum Average Maximum 

 value value value 

Test conditions 

 Start of test: 2005-01-11 10:01 

 End of test: 2005-01-11 16:09 

 Test duration: 06:07 

 Ambient temperature: °C 19.5 21.3 26.9 

 Outside temperature: °C 0.6 5.7 8.1 

 Air pressure: mbar 1004 

Test fuel, heat input 

 Test fuel Wood pellets 

 Water content kg/kg 0.066 

 Ash content kg/kg 0.002 

 Carbon content kg/kg 0.473 

 Hydrogen content kg/kg 0.058 

 Oxygen content kg/kg 0.401 

 Calorific value of anhydrous 

 and ash-free substance MJ/kg 19.0 

 Calorific value of fuel MJ/kg 17.5 

 Applied fuel quantity kg 12.2 

 Hourly fuel quantity kg/h 2.0 

 Fuel heat input kW 9.7 

Heat output, efficiency 

 Water circulation kg/h 408.1 411.4 414.1 

 Flow temperature °C 52.1 52.8 53.6 

 Return temperature °C 70.6 71.4 73.3 

 Temperature difference K 18.1 18.6 20.0 

 Heat output in the 

 boiler circuit kW 8.9 

 Utilisation % 27.7 

 Boiler efficiency % 91.2 

Measured values flue gas measuring section 

 Flue gas temperature °C 79.8 80.8 83.1 

 Manometric pressure (draught) Pa 7.2 7.8 11.0 

 Carbon dioxide % 8.7 10.0 11.2 

 Carbon monoxide ppm 52.7 110.5 283.5 

 Organic gaseous substances ppm 0.8 1.0 1.7 

 Nitrogen monoxide ppm 52.6 60.5 67.7 
Page 10 of 18 

Pellet burner Pellematic PE32 

BLT reference number: 153/04 

2.5.1 Emission measurements 

Measurement results test: HKA_1218

(Calculation depending on CO2-measurement)

Suction start: hh:mm 10:05 11:05 12:05 13:05 14:05 15:05

Suction period: min 30 30 30 30 30 30

Measured CO2-content: % 10.0 10.2 10.1 10.0 10.0 10.1 

Calculated O2-content: % 10.6 10.4 10.5 10.6 10.6 10.5 

Density of Gas sample: 

Dry gas kg/Nm3 1.34 1.34 1.34 1.34 1.34 1.34 

Humid gas kg/Nm3 1.30 1.30 1.30 1.30 1.30 1.30 

Water content g/Nm3 60.8 62.1 61.5 61.1 60.8 61.7 

Velocity: 

at sampling point m/s 0.40 0.39 0.39 0.39 0.39 0.39 

at probe head m/s 0.61 0.67 0.63 0.63 0.66 0.67 

Dust content: 

separated mg 27.8 24.2 30.5 27.4 23.3 23.2

Spec. dust content mg/Nm3 51.0 40.4 54.1 48.2 39.0 38.7 

2.5.2 Evaluation 

 relating to relating to 

 applied energy O2-content of 

 10 % 13 % 

 mg/MJ mg/Nm3 mg/Nm3

 Dust 23 48 35 

 Carbon monoxide (CO) 69 146 106 

 Organic 

 gaseous substances (OGC) <1 2 1 

 Nitrogen oxides (NOx) 62 131 96 
Page 11 of 18 

Pellet burner Pellematic PE32 

BLT reference number: 153/04 

2.5.3 Output-related measurements 

0 60 120 180 240 300 360

Time [min]

0

2

4

6

8

10

12

[kW]

Heat output

HKA_1218

0 60 120 180 240 300 360

Time [min]

0

50

100

150

200

250

300

[°C]

Flue gas temp.

Flow temp.

Return temp.

HKA_1218
Page 12 of 18 

Pellet burner Pellematic PE32 

BLT reference number: 153/04 

2.5.4 Flue gas composition 

0 60 120 180 240 300 360

Time [min]

0

2

4

6

8

10

12

CO2 [%]

0

50

100

150

200

250

300

CO [ppm]

Carbon dioxide

Carbon monoxide

HKA_1218

0 60 120 180 240 300 360

Time [min]

Dust

0

25

50

75

100

125

150

Dust [mg/Nm3]

Organic Carbon

0

25

50

75

100

125

150

OGC, NOx [ppm]

Nitrogen oxide

HKA_1218
Page 13 of 18 

Pellet burner Pellematic PE32 

BLT reference number: 153/04 

2.6 Surface losses 

The heat loss through the boiler surface is determined using DIN 4702-2:1990 based on radiation 

coefficients and arrangements of technical surfaces (according to Nusselt). Temperatures were 

measured at 47 points on the boiler surface during the test at nominal heat output. The 

measurement results are shown in the following table and the table of measurements in appendix 

5.2:

Parameter Value Unit

Test number HKA_1217

Ambient temperature 23 °C

Flow temperature 73 °C

Flue gas temperature 131 °C

Heat output in the boiler circuit 31.9 kW

Radiation losses from boiler 0.22 kW

Percentage loss at nominal heat output 0.7 % 

The surface temperature of the handle on the combustion chamber/ash door is 1 K above the 

ambient temperature. 

2.7 Water-side resistance of boiler 

The water-side resistance was determined for the flow rates at nominal heat output which occurred 

at temperature differences of 10 K and 20 K. 

Flow rate Temperature 

difference Water temperature Differential pressure

[kg/h] [K] [°C] [mbar]

1370 20 21.8 95.4 

1370 10 21.9 376.4 
Page 14 of 18 

Pellet burner Pellematic PE32 

BLT reference number: 153/04 

2.8 Electrical power consumption 

2.8.1 Average electrical power consumption at nominal heat output, minimum 

heat output, during standby position and ignition 

Operating status Fuel Meas. 

duration

Electrical 

energy

Average electrical 

power 

consumption

Percentage of 

nominal heat 

output

[min] [Wh] [W] [%] 

Nominal heat output 363 867 143 0.4 

Minimum 

heat output 448 329 44 0.1 

Standby position 60 11.6 11.6 

Ignition procedure

Wood pellets

15.7 98 374 

2.8.2 Electrical power consumption of main loads 

Load Power [W]

Drive motor – stoker screw 21 

Drive motor – extraction screw 49 

Induced draught fan 27 

Combustion fan (primary/secondary air) 61 

Ignition rod 255 

Heat exchanger cleaning motor 39 
Page 15 of 18 

Pellet burner Pellematic PE32 

BLT reference number: 153/04 

3 SUMMARY OF RESULTS

3.1 Heating tests 

The PELLEMATIC PE32 pellet burner from ÖkoFEN Forschungs- und Entwicklungs Ges.m.b.H. 

with a nominal heat output of 32.0 kW, was tested in the power range 8.9 kW – 31.9 kW using 

wood pellets compliant to ÖNORM M 7135:2000 having a diameter of 6 mm and a water content of 

6.7 % and 6.6 %. 

Since the boiler flue gas temperature is less than 160 K above room temperature at nominal heat 

output, the boiler manufacturer shall make recommendations, in accordance with ÖNORM 

EN 303-5:1999, regarding the flue installation in order to ensure sufficient draught and to prevent 

sooting up of the chimney and condensation. 

The results of the emission measurements are as follows: 

Nominal heat output Minimum heat output:

Test fuel [-] Wood pellets

Water content [%] 6.7 6.6 

Heat output [kW] 31.9 8.9 

Load [%] 99.7 27.7 

Flue gas 

temperature [°C] 130.9 80.8 

Boiler efficiency [%] 91.4 91.2 

Carbon dioxide [%] 13.2 10.0 

[mg/MJ] 1) [mg/m3

]

 2) [mg/m3

]

 3) [mg/MJ] 1) [mg/m3

]

 2) [mg/m3

]

 3)

Dust 8 17 12 23 48 35 

Carbon monoxide 17 37 27 69 146 106 

Organic carbon <1 <1 <1 <1 2 1 

Nitrogen oxides 77 162 117 62 131 96 

1) Emission values in mg/MJ (relating to the applied energy), subject to legal requirements in Austria. 

2) Emission values in mg/m3 (relating to 10 % O2, 1013 mbar, dry flue gas), corresponding to ÖNORM EN 

303-5:1999. 

3) Emission values in mg/m3 (relating to 13 % O2, 1013 mbar, dry flue gas), corresponding to various 

domestic and international requirements.
Page 16 of 18 

Pellet burner Pellematic PE32 

BLT reference number: 153/04 

3.2 Function check of the temperature controller / safety temperature limiter on 

the boiler 

The functional check of the temperature controller and safety temperature limiter and monitor on 

the boiler was performed in accordance with section 5.13 of ÖNORM EN 303-5. The requirements 

were fulfilled. 

3.3 Function check to verify the rapid shutdown of the burner system 

Since the tested PELLEMATIC PE32 pellet burner from ÖkoFEN Forschungs- und Entwicklungs 

Ges.m.b.H. is not equipped with a device to dissipate the residual heat as described in section 

4.1.5.11.3 of ÖNORM EN 303-5, the operating and fault conditions associated with a power outage 

and sudden loss of heat extraction were simulated to satisfy the definition of a burner system with a 

rapid shutdown facility. 

No dangerous operating conditions arose with either the water system or the burner during the 

course of the checks on the temperature controller, safety temperature limiter and rapid shutdown 

facility. 

4 ASSESSMENT 

Based on the test results, one can hereby confirm that the 

Pellet burner PELLEMATIC PE32 

from 

ÖkoFEN Forschungs- und Entwicklungs Ges.m.b.H., 

fulfils the requirements governed by the agreements in Art. 15 a BV-G relating to “Protective 

measures for small burners” (1998) and “Saving energy” (1995). 

For the 

factual correctness: 

Amtsdirektor Dipl.-HLFL-Ing. 

Leopold Lasselsberger m.p.

 For the 

report and tests: 

Ing. 

Harald Baumgartner m.p.

Head of the 

accredited test centre: 

Hofrat Dipl.-Ing. Dr. 

Johann Schrottmaier m.p. 

Wieselburg, 27/04/05 
Page 17 of 18 

Pellet burner Pellematic PE32 

BLT reference number: 153/04 

5 APPENDIX

5.1 Legal requirements (for information only) 

Legal requirements relating to small burner systems

for biogenous fuels in Austria

Agreement according to Art. 15 a B-VG concerning an amendment to the agreement 

according to Art. 15 a B-VG relating to protective measures for small burners (1998)

Small solid fuel burners should not exceed the following emission limits: 

Emission limits [mg/MJ]

Solid fuel burners

CO NOx OGC Dust

Biogenous fuels 1100 150*) 80 60 Manually 

loaded Fossil fuels 1100 100 80 60 

Biogenous fuels 500**) 150*) 40 60 Automatically 

loaded Fossil fuels 500 100 40 40 

*) The NOx limit only applies to wood burners. 

**) This limit value can be exceeded by 50 % during partial load operation at 30 % of nominal output. 

Energy saving agreement according to Art. 15 a B-VG

The efficiency of small solid fuel burners should not fall below the following values: 

Small burners used for solid fuel central heating:

Manually loaded

up to 10 kW 73 % 

> 10 to 200 kW (65.3 + 7.7 log Pn) %

> 200 kW 83 % 

Automatically loaded

up to 10 kW 76 % 

> 10 to 200 kW (68.3 + 7.7 log Pn) %

> 200 kW 86 % 

These federal requirements are implemented in local state law. 
Page 18 of 18 

Pellet burner Pellematic PE32 

BLT reference number: 153/04 

5.2 Surface temperature measurement points 

KESSELTYPE:

POSITIONSBESCHREIBUNG TEMP. TEMP.

DES BEDIENUNGSGRIFFES [ °C ] [ °C ]

24

TEMP. TEMP. TEMP. TEMP. TEMP. TEMP.

NR. FLÄCHE [ °C ] NR. FLÄCHE [ °C] NR. FLÄCHE [ °C] NR. FLÄCH E [ °C] NR. FLÄCHE [ °C] NR. FLÄCHE [ °C]

1 A1 30,7 21 E1 28,7 41 I 1 61 M1 61 Q1 61 U1

2 A2 31,0 22 E2 28,4 42 I 2 62 M2 62 Q2 62 U2

3 A3 31,3 23 E3 29,6 43 I 3 63 M3 63 Q3 63 U3

4 A4 24 E4 28,4 44 I 4 64 M4 64 Q4 64 U4

5 A5 25 E5 28,8 45 I 5 65 M5 65 Q5 65 U5

Mittelwert 31,0 Mittelwert 28,8 Mittelwert Mittelwert Mittelwert Mittelwert

6 B1 28,7 26 F1 27,6 46 J1 28,8 66 N1 66 R1 66 V1

7 B2 29,6 27 F2 28,7 47 J2 27,0 67 N2 67 R2 67 V2

8 B3 29,5 28 F3 25,5 48 J3 29,6 68 N3 68 R3 68 V3

9 B4 29,5 29 F4 25,8 49 J4 31,6 69 N4 69 R4 69 V4

10 B5 31,7 30 F5 50 J5 28,5 70 N5 70 R5 70 V5

Mittelwert 29,8 Mittelwert 26,9 Mittelwert 29,1 Mittelwert Mittelwert Mittelwert

11 C1 32,1 31 G1 27,3 51 K1 29,9 71 O1 71 S1 71 W1

12 C2 34,8 32 G2 28,2 52 K2 29,8 72 O2 72 S2 72 W2

13 C3 28,7 33 G3 26,2 53 K3 38,9 73 O3 73 S3 73 W3

14 C4 29,7 34 G4 27,3 54 K4 29,1 74 O4 74 S4 74 W4

15 C5 30,3 35 G5 25,4 55 K5 29,3 75 O5 75 S5 75 W5

Mittelwert 31,1 Mittelwert 26,9 Mittelwert 31,4 Mittelwert Mittelwert Mittelwert

16 D1 26,8 36 H1 40,2 56 L1 76 P1 76 T1 76 X1

17 D2 26,9 37 H2 35,2 57 L2 77 P2 77 T2 77 X2

18 D3 31,6 38 H3 24,8 58 L3 78 P3 78 T3 78 X3

19 D4 27,2 39 H4 24,3 59 L4 79 P4 79 T4 79 X4

20 D5 27,9 40 H5 24,4 60 L5 80 P5 80 T5 80 X5

Mittelwert 28,1 Mittelwert 29,8 Mittelwert Mittelwert Mittelwert Mittelwert

Ökofen Forschungs- u. EntwicklungsGmbH

Griff - Brennraumtür

KESSELFABRIKAT:

MESSPUNKT

BEZ.

 MESS MESS

MATERIAL

(ME / PO / KU)

POSITIONSBESCHREIBUNG 

 DES BEDIENUNGSGRIFFES

Z1

Z2 Z4

ME Z3

 MESS MESS MESS. MESS

BEZ.

MATERIAL MESSPUNKT

(ME / PO / KU)

Pelletskessel PE32

K1...K5 Floor area