### BLT reference number : 131 /0 6 BLT approval number : 044 /0 7



## Pell et burner

EVOTHERM P 50

Applicant and manufacturer :

EVOTHERM

Heiztechnik Vertriebs GmbH

Seeleiten 24

A T 5120 St. Pantaleon

A T 3250 Wieselburg, Rottenhauser Straße 1

Tel.: + 43 7416 52175

– 0, Fax: +43 7416 52175

– 45

blt@josephinum.at, http://blt.josephinum.at TEST REPORTThe BLT Wieselburg is an accredited burner test centre issued with identification number 112 according

a c creditation law BGBl. No. 468/1992. The quality management system complies with the requirements

d e fined in ÖVE/ÖNORM EN ISOIEC 17 025.

Rottenhauser Straße 1

A 3250 Wieselburg

Austria / Österreich Tel.: +43

- 7416

- 52175

- 0

Fax: +43

- 7416

- 52175

- 45

E

- Mail: blt @josephin um.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 have to be authorized by Francisco Josephinum BLT.

Authorized translation

In the event of doubt the German original shall prevail.Pag e I

Pellet burner EVOTHERM P 50

BLT reference number: 131/06 

### TABLE OF CONTENTS

Pag e



### 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 TEST AND RESULTS

................................ ................................ ................................ ........... 3

2.1 Test setup

– measurement method s

................................ ................................ ......................... 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 compositio n

................................ ................................ ................................ .... 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,

on standby and ignition

................................ ................................ ............................... 14

2.8.2 Electrical power consumption of main loads

................................ ................................ 14



### 3 SUMMARY OF RESULTS

................................ ................................ ................................ ... 14

3.1 Heating tests

................................ ................................ ................................ ........................... 14

3.2 Function check / safety temperature limiter on the boiler

................................ ......................... 15

3.3 Function check to verify the rapid shutdown of the system

................................ ...................... 15



### 4 ASSESSMENT

................................ ................................ ................................ .................... 16

5 APPENDIX

................................ ................................ ................................ .......................... 17

5.1 Legal requirements (for information only)

................................ ................................ ................ 17

5.2 Surface temperature measuring points

................................ ................................ .................... 18Pag e II

Pellet burner EVOTHERM P 50

BLT reference number: 131/06 

### APPLIED STANDARDS

[1] ÖNORM EN 303

- 5:1999 Heating boilers for solid fuels, hand and automatically stoked,

nom i nal heat output of up to 300 kW

[2] Ö NORM EN 304: 2005 Heating boilers. Test code for heating boilers for atomising oil

bur n ers

[3] EN 267:1999 Forced draught oil burners

– definitions, requirements, testing,

mar k ing

[4] ÖNORM M 7135:2000 Compressed wood and compressed bark in natural stat e

– 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 codePag e 1 of 18

Pellet burner EVOTHERM P 50

BLT reference number: 131/06 

### 1 DESCRIPTION

1.1 General

The tested pelle t burner EVOTHERM P 50 manufactured by Evotherm Heiztechnik Vertriebs

GmbH with a nominal heat output of 49,5 kW comprises a hopper for pellets, the fuel feeding sy stem with an integrated rotary gate valve, a drop shaft, the stoker screw, the burner with t he co mbustion chamber and a vertically set up pipe heat exchanger. The burner is equipped with an ele ctric ign i tion, an automatic cleaning system for the heat exchanger, a speed

- controlled draught fan,

a Lambda sensor and a microprocessor control system wi th associated switches and sensors.

A cuboid sheet metal storage container was used to perform the tests. The pellets are taken off

from the storage container by a flexible screw conveyor situated in a ductile PLT

- plastic pipe. This

screw conveyor is lead ing to a driving motor situated on the back of the boiler which is then co nnected with the stoker screw by a horizontally and vertically slewable ball coupling system. In this

drive unit the rotary gate valve, powered by a 12

- Volt DC motor, is connected wi th the driving

shaft of the screw by a chain drive. The stoker screw transports the fuel upwards from where it

falls through a drop shaft and a down pipe on the boiler front side which is equipped with a phot ocell and an inspection glass. From there it can fall into the heat resistant metal burner. The boiler

is period i cally cleaned by turning down the grate, the residues fall into the ash drawer.

The speed

- controlled combustion fans direct the combustion air as primary air flow through the

burner and as secondary air flow to the fuel gases. After reversing the combustion gases above

the burner, the gases are directed through the three

- pipe heat exchanger wherefrom they are su ctioned by a speed

- controlled draught fan towards the chimney. The burner and th e heat exchanger

are automatically cleaned by a separate motor which also opens the burner and cleans the heat

e x changer pipes with rotating turbulators. The ash finally falls into an ash drawer which is installed

b e low the heat exchanger. Both ash boxes c an be extracted at the boiler front.

The fuel is ignited with a hot air blower. The combustion is monitored by a photo cell. The volume

of the fuel and the fuel gases are controlled by a Lambda sensor and regulated by a microproce ssor system according to the required heat output level. The negative pressure in the combustion

cha m ber is monitored by a load cell. The flames can be inspected through a sight glass fixed at

the boiler front.

The combustion chamber and the heat exchanger are thermally insulate d from the outside.



### 1.2 Boiler plate informationPag e 2 of 18

Pellet burner EVOTHERM P 50

BLT reference number: 131/06 

### 1.3 Diagram of the burner

1.4 Techni cal data

Parameter

– Overall dimensions of burner Value Un it

Overall width incl. storage container 1 547 mm

Overall wi d th of burner 709 mm

Overall depth inc l. induced draught fan 984 mm

Overall depth inc l. stoker unit 1294 mm

Overal l height 1412 mm

Diameter of flue gas pipe 180 mm

Height to centre of flue gas pipe 885 mm

Flow / r eturn connection 5/4 "

Water capacity (measured ) 54 l

E mptying outlet 1⁄2 "

Thickness of sheets exposed to fire 5 mm

Thermal insulation 20

– 80 mm

Total weight incl. h opper 577 kg

Source: Measurements by BLT WieselburgPag e 3 of 18

Pellet burner EVOTHERM P 50

BLT reference number: 131/06 

### 2 TEST AND RESULTS

Measurements were taken to determine the heat output, boiler e fficie ncy (direct method), flue gas composition, flue gas temperature in the measuring section, feed pressure (draught), emission

characteristics and the electrical power consumption. The surface te m peratures were measured at

nominal heat output and at stationar y operation; this allowed the surface losses to be estimated.

The measurement equipment and the measurement methods correspond to ÖNORM EN 303

- 5:1999, ÖNORM EN 304:2005 and EN 267:1999. The measurement accuracy and the measur ement uncertainty are stated i n the procedures for verification in the quality management manual

i s sued 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 u sing a prefabricated flue pipe, diame ter 200 mm, height above ground level 9 m, feed pressure li mited by draught r e striction flap.

HEAT OUTPUT MEASUREMENT: Determining the mass flow using the Co riolis mass flow meter

PROMASS 8 3 F from Endress & Hauser, as well as the water temperatures at th e 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 with a ring balance meter.

WATER

- SID E RESISTANCE: Differential pressure transducer with ceramic measuring me mbranes DELTABARS PMD 70 from Endress & Hauser.

CARBON DIOXIDE AND CARBON MONOXIDE CONTENT: Non

- dispersive infrared gas analyser

NGA 2000 from Emerson; carbon dioxide: lowest measurem ent range 0

- 5 %, highest measur ement 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 mea surement range 0

- 10 %; measured in dry fl ue gas.

DUST CONTENT: Measuring device for gravimetric determination of total dust by company Paul

Gothe GmbH with a nominal suction quantity of 6 m 3 / h, dust separation on stuffed quartz wool fi lter; filter is located directly after sampling probe and el bow, determination of partial flow volume

by dry gas meter and upstream drying tower. The sampling point for determination of dust content

is arranged directly after the measuring section.

CONTENT OF ORGANIC GASEOUS SUBSTANCES: Flame ionisation detector J UM, Type VE

5 ; samples taken via heated filter and heated pipe (thermostatically controlled to 180 °C); mea sured in damp flue gas.

NITROGEN MONOXIDE CONTENT: Gas analyser from ECO Physics Type CLD 700 E1

- ht;

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

cooler; measured in dry flue gas.Pag e 4 of 18

Pellet burner EVOTHERM P 50

BLT reference number: 131/06

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 C1.1. Maximum resolution of the pulse output: 0,1 Wh.

Power Analyzer Norma 4000 with 3 Power Phase PP40 with following specifications: 8 measur ement ranges for voltage (0,3 / 1 / 3 / 10 / 100 / 300 / 1000 V), 6 measurement ranges for current

(30

– 100 mA

– 0,3

– 1

– 3

– 10 A). The measurement accuracy of +/

- 0,1 % of measured value

and 0,1% of measuring range, Sample Rate 341 kHz, bandwidth for voltage 3 MHz.

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 m edia.



### 2.2 Performance of heating tests

HEAT OUTPUT: The measurements were carried out in accordance with ÖNORM EN 303

- 5:1999

at nominal and minimum heat output ( < 30 % of the n ominal heat output) respectively. The nom inal heat output measurements were performed after the burner had been in operation for at least 3

hours in the nominal heat output range. The measurements themselves were taken over a test p eriod of at least 6 hour s. 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. For determining the dust content the extraction time per fi lter was limited to 30 minutes. The dust content was determined by 6 half

- hourly averages, evenly

di s tributed over the test duration. Calibration gases were used to check the gas analysers before

and after every test period.

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

settings were made during preliminary tests based on recommendations of the manufacturer. It

was aspired to maximise the carbon dioxide content whilst at the same ti me minimising the carbon

monoxide content.

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

with a diameter of 6 mm and a water content of 5,8 % and 6,1 %. The water content, the ash co ntent and the calorific value w ere determined; the average values of the chemical data relating to

the water

- and ash

- free su b stance were taken from ÖNORM M 7132:1998.

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

installation to verify th e 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 u sing

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 taking into account the pressure and temperature.

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

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

oxides was measured in dry flue gas and declared as NO 2

.Pag e 5 of 18

Pellet burner EVOTHERM P 50

BLT reference number: 131/06 

### 2.4 Investigatory heating tests with wood pellets at nominal heat output

Number of test : HKA_1395

Name of boiler : Pellet burner EVOTHERM P 50

Nominal heat output : 49.5 kW

Minimum Average Maximum

value value value

Test conditions

Start of test : 2006

- 06

- 21 07:28

End of test : 2006

- 06

- 21 13:32

Test d uration : 06:03

Ambient temperature : °C 23,3 25,5 27,6

Outside temperature : °C 20,2 24,7 28,7

Air pressure : mbar 992

Test fuel , heat input

Test fuel Wood pellets 06_387

Water content kg/kg 0,058

Ash content kg/kg 0,004

Carbon content kg/kg 0, 477

Hydrogen content kg/kg 0,058

Oxygen content kg/kg 0,403

Calorific value of anhydrous

and ash

- free substance MJ/kg 18,8

Calorific value of test fuel MJ/kg 17,5

Applied fuel quantity kg 61,9

Hourly fuel quantity kg/h 10,2

Fuel heat input kW 49,8

Heat output, efficiency

Water circulation kg/h 2077,5 2100,1 2120,8

Flow temperature °C 57,4 57,6 57,9

Return temperature °C 7 5,9 77,1 77,8

Temperature difference K 18,3 19,5 20,3

Heat output kW 47,8

Utilisation % 96,6

Boiler efficiency % 96,2

Measured values at flue gas measuring section

Flue gas temperatur e °C 94,1 94,7 95,8

Manometric pressur e Pa 6,4 7,0 8,6

Carbon dioxid e % 11,8 14,4 16,5

Carbon monoxid e ppm 9,9 27,3 313,4

Organic gaseous substances ppm 0,5 0,7 1,0

Nitrogen monoxid e ppm 77,7 98,9 119,5Pag e 6 of 18

Pellet burner EVOTHERM P 50

BLT reference number: 131/06 

### 2.4.1 E mission measurements

Measurement results test : HKA_1 3 95

(Calculation depending on CO 2 

### - measurement )

Suction start: hh:mm 07:35 08:35 09:35 10:35 11:35 12:35

Suction period : min 30 30 30 30 30 30

Suctioned gas sample : m3 0,470 0,489 0,480 0,458 0,471 0,475

Measured CO 2 - content: % 14,2 14,5 14,4 14,2 14,4 14,4

Calculated O 2 - content: % 6,2 5 ,9 6,0 6,2 6,1 6,0

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 1,31 1,30 1,30 1,30 1,30

Water content g/Nm3 82,8 84,6 84,0 82,9 83,6 84,0

Flue gas mass flow:

Dry gas kg/kg 8,5 8,3 8,4 8,5 8,4 8,4

Velocity:

At sampling point m/s 1,07 1,05 1,06 1,07 1,06 1,06

At probe head m/s 0,97 1,00 0,98 0,94 0,96 0,97

Dus t content:

separated mg 4,8 4,9 5,3 5,5 5,8 7,0

separated relating

to sample volume mg/Nm3 12,1 12,0 13,2 14,3 14,7 17,7



### 2.4.2 Evaluation

relating to relating to

applied energy O 2 - content of

10 % 13 %

mg/MJ mg/Nm 3 mg/Nm 3

Dust 5 1 0 7

Carbon monoxid e (CO) 12 25 18

Organic gaseous

substances (OGC) <1 1 1

Nitrogen oxide s (NO

x ) 73 153 111Pag e 7 of 18

Pellet burner EVOTHERM P 50

BLT reference number: 131/06 

### 2.4.3 Output

- related meas urements

0 6

0 12

0 18

0 24

0 300 36

0 Time [min] 0 1

0 2

0 3

0 4

0 5

0 6

0 [kW]

Heat output HKA_1395



### 0 6

0 12

0 18

0 24

0 300 36

0 Time [min] 0 5

0 10

0 15

0 20

0 25

0 30

0 [°C]

Flue gas temp.

Flow temp.

Return temp. HKA_1395Pag e 8 of 18

Pellet burner EVOTHERM P 50

BLT reference number: 131/06 

### 2.4.4 Flue gas compositio n

0 6

0 12

0 18

0 24

0 300 36

0 Time [ min] 0 4 8 1

2 1

6 2

0 2

4 CO2 [%]

0 10

0 20

0 30

0 40

0 50

0 60

0 CO [ppm]

Carbon dioxide

Carbon monoxide HKA_1395



### 0 6

0 12

0 18

0 24

0 300 36

0 Time [min] Dust

0 2

5 5

0 7

5 10

0 12

5 15

0 Dust [mg/Nm3]

Organic C

0 2

5 5

0 7

5 10

0 12

5 15

0 OGC, NOx

[ppm]

Nitrogen oxide HKA_1395Pag e 9 of 18

Pellet burner EVOTHERM P 50

BLT reference number: 131/06 

### 2.5 Investigatory heating tests with wood pellets at minimum heat output

Number of test : HKA_ 1394

Name of boiler : Pell et burner EVOTHERM P 50

Nominal heat output : 49.5 kW

Minimum Average Maximum

value value value

Test conditions

Start of test : 2006

- 06

- 20 07:03

End of test : 2006

- 06

- 20 13:03

Test duration : 06:00

Ambient temper a t ure : °C 24,1 26,1 27, 6

Outside temperature : °C 24,3 27,4 31,4

Air pressure : mbar 995

Test fuel, heat input

Test fuel Wood pellets 06_387

Water content kg/kg 0,061

Ash content kg/kg 0,004

Carbon content kg/kg 0,475

Hydrogen content kg/kg 0,058

Oxygen content kg/kg 0,402

Calorific value of anhydrous

and ash

- free substance MJ/kg 18,8

Calorific value of test fuel MJ/kg 17,4

Applied fuel quantity kg 19,0

Hourly fuel quantity kg/h 3,2

Fuel heat input kW 15,3

Heat output, efficiency

Water circulation kg/h 617,3 621,4 624,9

Flow temperature °C 57,0 57,1 57,2

Return temperature °C 7 5,7 76,5 77,5

Temp erature difference K 18,6 19,4 20,3

Heat output in the

boiler circuit kW 14,0

Utilisation % 28,3

Boiler efficiency % 91,9

Measured values flue gas measuring section

Flue gas temperatur e °C 76,3 76,8 77,3

Manometric pressure ( draught) Pa 5,4 6,6 8,8

Carbon dioxid e % 5,5 7,7 11,0

Carbon monoxid e ppm 20,6 48,2 139,0

Organic gaseous substances ppm 0,8 1,4 3,3

Nitrogen monoxid e ppm 30,5 44,3 63,1Pag e 10 of 18

Pellet burner EVOTHERM P 50

BLT reference number: 131/06 

### 2.5.1 Emission measurements

Mea surement results test : HKA_1394

(Calculation depending on CO 2 

### - measurement )

Suction start: hh:mm 07:10 08:10 09:10 10:10 11:10 12:10

Suction period : min 30 30 30 30 30 30

Suctioned gas sample : m3 0,461 0,476 0,472 0,455 0,476 0,496

Measured CO 2 - content: % 7,6 7,7 7,5 7,8 7,7 7,7

Calculated O 2 - content: % 13,1 13,0 13,1 12,9 13,0 12,9

Density of gas sample:

Dry gas kg/Nm3 1,33 1,33 1, 33 1,33 1,33 1,33

Humid gas kg/Nm3 1,30 1,30 1,30 1,30 1,30 1,30

Water content g/Nm3 46,8 47,1 46,5 47,7 47,3 47,5

Flue gas mass flow:

Dry gas kg/kg 15,5 15,4 15,6 15,2 15,3 15,2

V elocity:

At sampling point m/s 0,56 0,55 0,56 0,55 0,55 0,55

At probe head m/s 0,43 0,43 0,43 0,41 0,43 0,45

Dust content:

separated mg 2,7 3,5 2,9 2,1 2,0 2,3

s eparated relati ng

to sample volume mg/Nm3 7,0 8,9 7,4 5,6 5,1 5,6



### 2.5.2 Evaluation

relating to relating to

applied energy O 2 - content of

10 % 13 %

mg/MJ mg/Nm 3 mg/Nm 3

Dust 4 9 7

Carbon monoxid e (CO) 40 83 60

Organic

g as eous substances (OGC) 2 3 2

Nitrogen oxide s (NO

x ) 61 127 93Pag e 11 of 18

Pellet burner EVOTHERM P 50

BLT reference number: 131/06 

### 2.5.3 Output

- related measurements

0 6

0 12

0 18

0 24

0 300 36

0 Time [min] 0 4 8 1

2 1

6 2

0 2

4 [kW]

Heat output HKA_1394



### 0 6

0 12

0 18

0 24

0 30

0 36

0 Time [min] 0 5

0 10

0 15

0 20

0 25

0 30

0 [°C]

Flue gas temp.

Flow temp.

Return temp. HKA_1394Pag e 12 of 18

Pellet burner EVOTHERM P 50

BLT reference number: 131/06 

### 2.5.4 Flue gas composition

0 6

0 12

0 18

0 24

0 300 36

0 Time [min] 0 2 4 6 8 1

0 1

2 CO2 [%]

0 2

5 5

0 7

5 10

0 12

5 15

0 CO [ppm]

Carbon dioxide

Carbon monoxide HKA_1394



### 0 6

0 12

0 18

0 24

0 30

0 36

0 Time [min] Dust

0 2

5 5

0 7

5 10

0 12

5 15

0 Dust [mg/Nm3]

Organic C

0 2

5 5

0 7

5 10

0 12

5 15

0 OGC, NOx

[ppm]

Nitrogen oxide HKA_1394Pag e 13 of 18

Pellet burner EVOTHERM P 50

BLT reference number: 131/06 

### 2.6 Surface losses

The heat loss through the boiler surface is determined using DIN 4702

- 2:1990 basing on radiation

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

measured at 38 points on the boiler surface during the test at nominal heat output. The measur ement results are shown in the following table and the table of measurements in appendix 5.2:

Parameter Value Un it

Test number HKA_1 3 95

Ambient temperatur e 25,4 °C

Flow t emperatur e 7 7 °C

Flue gas temp eratur e 95 °C

Heat output in the boiler circuit 4 7

, 8 kW

Radiation losses from boiler 0, 15 kW

Percentage loss at nominal heat output 0, 3 %

The surface temperature of the handle s on the combustion chamber/ash door w as ma x. 4 K above

the ambient temperature.



### 2.7 Wa ter

- side resistance of boiler

The water

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

at temperature differences of 10 K and 20 K respectively.

Flow rate Temperatur e

dif f e rence Water temperatur e Differential pressure

[kg/h] [K] [°C] [mbar]

21 2 0 20 36

, 4 7

, 7

42 40 10 3 5

, 9 2 9

, 9Pag e 14 of 18

Pellet burner EVOTHERM P 50

BLT reference number: 131/06 

### 2.8 Ele ctrical power consumption

2.8.1 Average electrical power consumption at nominal heat output, minimum

heat output, on standby and ignition

Operat ing status Fuel Meas.

duration Ele ctrical

energy Average

electrical power

co n sumption Percentage of

nominal heat

output

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

N ominal heat output

Wood pe l lets 36 5 780 1 28 0, 3

Minimum heat output 36 1 502 83 0,2

S tandby position 6 0 8 8

Ignition procedure 14 66 280



### 2.8.2 Ele ctrical power consumption of main loads

Load Leistung [W]

Draught fan 8 2

S econdary air fan 63

Drive motor

– stoker screw 17

Drive motor

– extraction screw 29

Drive motor

– cleaning of heat exchanger 7

Ignition rod 1 653



### 3 SUMMARY OF RESULTS

3.1 He ating tests

The tested EVOTHERM P 50 pellet burner from the company Evotherm Heiztechnik Ve r triebs

GmbH , with a nominal heat out put of 49,5 kW, was tested in the power range of 14,0 to 47,8 kW

using wood pellets compl iant to ÖNORM M 7135:2000 having a diameter of 6 mm and a water

co n tent of 5,8 % and 6,1 %.

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 accor dance 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.Pag e 15 of 18

Pellet burner EVOTHERM P 50

BLT reference number: 131/06

The results of the emission measurements are as follows:

Nominal heat output Minimum heat output

Test fuel [

- ] Wood pellets

Water content [%] 5, 8 6,1

Heat output [kW] 4 7

, 8 14

, 0

Fuel heat input [kW] 49

, 8 1 5

, 3

Flue gas mass flow [kg/h] 92

, 1 50

, 2

Load [%] 9 6

, 6 2 8

, 3

Flue gas temperature [°C] 94

, 7 7 6

, 8

Boiler efficiency [%] 9 6

, 2 9 1

, 9

Carbo n dioxide [%] 1 4

, 4 7

, 7

[mg/MJ]

1) [mg/m 3 ] 2) [mg/m 3 ] 3) [mg/MJ]

1) [mg/m 3 ] 2) [mg/m 3 ] 3)

Dust 5 10 7 4 9 7

Carbon monoxid e 1 2 25 18 4 0 83 60

Organic carbon < 1 1 1 2 3 2

Nitrogen oxide s 73 1 5 3 1 11 61 127 93

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

2) Emission values in mg/m 3 (relating to 10 % O 2 , 1013 mbar, dry flue gas), according to ÖNORM EN 303

-

5:1999.

3) Emission values in mg/m 3 (relating to 13 % O 2 , 1013 mbar, dry flue gas), correspondin g to various n ational and international requirements.



### 3.2 Function check / safety temperature limiter on the boiler

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

on the boiler was performed in accordance w ith section 5.13 of ÖNORM EN 303

- 5

. The requir ements were fulfilled.



### 3.3 Fun ction check to verify the rapid shutdown of the system

Since the tested pellet burner EVOTHERM P 50 from the company Evotherm Heiztechnik Ve rtriebs GmbH is not equipped with a devic e to dissipate the residual heat as described in section

4.1.5.11.3 of ÖNORM EN 303

- 5 :1999 , the operating and fault conditions associated with a power

outage and sudden loss of heat extraction were simulated in order to satisfy the definition of a

burner s ystem with a rapid shutdown faci l ity.

During the course of the checks on the temperature controller, the safety temperature limiter and

the rapid shutdown facility no dangerous operating conditions arose neither with the water system

nor the burner.Pag e 16 of 18

Pellet burner EVOTHERM P 50

BLT reference number: 131/06 

### 4 ASSESSMENT

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

Pellet burner EVOTHERM P 50

from

Evotherm Heiztechnik Vertriebs GmbH

fulfils the requirements governed by the agreements in Art. 15 a BV

- G relating to “Protective

mea s ures 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, 20 / 06 / 200 7

Translation: 31/07/2009Pag e 17 of 18

Pellet burner EVOTHERM P 50

BLT reference number: 131/06 

### 5 A PPENDIX

5.1 Legal requirements (for information only )

Legal requirements relating to small burner systems

for biogenous f u els in Austria

Agreement according to Art. 15 a B

- VG concerning an amendment to the agreement a ccor d ing to Art. 15 a B

- VG relating to protective measures for small burners (1998)

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

Solid fuel burners Emission limits [mg/MJ]

CO NO

x OGC Dust

Manually

loaded Biogen ous fuels 1100 150*) 80 60

Fossil fuels 1100 100 80 60

Autom atically

loaded Biogen ous fuels 500**) 150*) 40 60

Fossil fuels 500 100 40 40

*) The NOx limit only applies to wood burners.

**) This limit value can be ex ceeded by 50% during partial load operation at 30% of nominal heat

ou t put.

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 cen tral 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 r equirements are implemented in local state law.Pag e 18 of 18

Pellet burner EVOTHERM P 50

BLT reference number: 131/06 

### 5.2 Surface temperature measuring points

H 1... H 5 Floor area