1MANUAL FOR A4 MODEL WITH MAX. OUTPUT 20 kW

Operation andmaintenanceA4 Pellet burner

1-14-3009E

2005-03

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Store this manual somewhere easilyaccessiblefor future use.

Please read through the manual carefullybefore starting up your EcoTec pellet system.

The output of your pellet burner is calcu-lated according to the maximum quantity ofpellets that can be fed in and burned in theburning cup in 1 hour, (refers to firing usingnormal wood pellets as an average of ourfuel specification).

For larger output requirements (between 25-300 kW), contact Sahlins EcoTec AB.

IMPORTANT!

The burner’s green protective cap and the lid of the control unitmust not be removed unless the voltage (main power) to the

system has been switched off.

The guarantee is valid provided that the product is installed by anauthorised EcoTec dealer.

FOLLOW THE INSTRUCTIONS IN THE MANUAL CAREFULLY AND CARRYOUT THE RECOMMENDED CARE AND MAINTENANCE.

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OVERVIEW OF THE BURNER

OVERVIEW OF THE CONTROL PANEL

FUNCTIONAL DESCRIPTION

EASY TO MANAGE

SAFETY CHECKS/ALARMS

CONTROL SYSTEM / OPERATION

INSTALLATION

CONNECTION TABLE

TROUBLESHOOTING

MAINTENANCE

ADVICE ON FUEL PELLETS

GUARANTEE AND COMPLAINTS

OPERATION LOG

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PAGE 5

PAGE 6

PAGE 8

PAGE 9

PAGE 10

PAGE 16

PAGE 18

PAGE 20

PAGE 22

PAGE 23

PAGE 24

PAGE 25

CONTENTS

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1 Burning cup

2 Rotary arm

3 Gear ring

4 Primary ring

5 Stop screws, burning cup

6 Primary air pipe

7 Secondary air pipe

8 Hot-air ignition

9 Optical sensor

10 Combustion fan

11 Release gate

12 Internal fuel store

13 Drive motor

14 Level sensor (receiver), black

15 Level sensor (transmitter), white

16 Connector

17 Feeder screw

18 Thermal contact

19 Microswitch

20 Quick-release bracket

21 Swivel arm bracket

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1 Start

2 Stop

3 Display

4 Control buttons for display manipulation

5 Input operational thermostat cable

6 Input Max. thermostat cable

7 Input Lambda probe (optional)

8 Input/Output multi-unit cable for theburner

9 Input voltage 230/240 VAC

10 Output external feed

11 Cover, terminal block

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Control box 3006

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PELLET FIRING

Pellet firing with EcoTec’s pellet burners isextremely similar to oil firing. A pelletburner requires only slightly more main-tenance than an oil burner. We recom-mend maintenance measures such asprudent sweeping of the boiler.

EcoTec pellet burners are supplied asstandard with automatic ignition, butcan always be lit manually.

FULLY AUTOMATIC

Operation of the burner and associatedfeedersystems is fully automated and iscontrolled via an in-built thermostat.Complete combustion takes place in acost-effective and environment-friendlyway by means of preset oxygenationusing primary and secondary air.

The burner can be adjusted for fuel withvarying energy content.See fuel specification, page 23.

The burner’s control unit is preprogram-med and has default settings. The instal-lation engineer can fine-tune the controlfunction to optimise combustion in theboiler with regard to the fuel being used.Fuel feed of pellets from the external fuelstore to the burner is fully automatic; itemploys a feedersystem that is adjustedand controlled via the burner’s controlunit.

The burner can also be supplementedwith O2-regulation (lambda probe - thisrequires a fully sealed boiler). The burnerthen adjusts automatically to maintainoptimum combustion in relation to fuelquality and actual energy consumption.See separate manual.

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PELLETSTORE

THE FEEDER SYSTEM

The feeder system is based on the safetyprinciple of interrupting the flow of fuelby free fall (in the hose) between theexternal feed and the burner.

NB ALWAYS EXERCISE CAUTIONWHEN HANDLING ASHES, AS

THEY MAY BE HOT.

NB AN ECOTEC BURNER MUSTNOT BE COMBINED WITH ANY

FEEDER SYSTEM OTHER THAN ANECOTECORIGINAL FEEDER

SYSTEM.

ASH REMOVAL

All combustion of solid fuel, even if ittakes place in the automated systememployed by EcoTec pellet burners,requires maintenance and servicing. Themajority of the maintenance relates tothe fuel and its quality; see comparisonbelow. Good pellets contain no morethan 0.5% ash, meaning that ash onlyneeds to be removed every 3-4 weeks,depending on boiler type. Pellets with2% ash produce enough ash to requireweekly ash removal under the sameconditions.Switch off the burner using the STOPbutton; wait until firing has died down andthe burner has stopped. Wait a further30 mins to allow the burner to cool.

NB Do not switch off the main powerswitch until maintenance is ready tocommence.The following measures and checksshould be performed each time ash isremoved to ensure safe, trouble-freeoperation, or at least once a month untilyou have the necessary experience tojudge required maintenance intervals.

A plastic ash collector that can be con-nected to an ordinary vacuum cleaner isavailable as an optional accessory.A sheet-metal version is also available withbuilt-in suction fan.

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EASY TO MANAGE

Pellet burners from EcoTec are designedin line with the main principles we areaccustomed to for oil-fired heating. Thebenefit of these main principles is con-venient handling, where the location ofthe fuel store is not being restricted bythe design of the boiler room. In termsof safety, separation of the burner andfuel store, in combination with a non-continuous fuel feed between themprovides increased protection against thespread of fire in the event of backburn-ing.

Damage resulting from incorrect hand-ling, or poor function or installation willbe limited to the burner’s internal fuelstore.In short, the internal store is only refilledwith a limited quantity of fuel via theexternal feeder system at each filling.Fuel is fed through a tight-fitting outfeedthat is synchronised with the externalfeed process.

A thermal contact, located just outsidethe boiler on the fuel feed pipe, detectsany heat spreading back into the fuelfeed pipe towards the internal store.Should this occur, fuel already present inthe fuel feed pipe will be fed into theboiler immediately, and refilling of theinternal store will cease.

The burner’s control unit is linked to theboiler’s maximum thermostat.

In the event of an error on the opera-tional thermostat, the maximum thermo-stat will step in and prevent the boilerfrom overheating.

The burner is also designed to revert tonormal operating mode following opera-tional disruptions such as a power cut,fuel interruptions, etc. If this processfails, this is indicated in the display andthe burner switches off.

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1 The main power switch must alwaysbe on.

2 Connections between burner andexternal feeder system must be prop-erly mounted and tight.

ALARMS

If a breakdown occurs, this is indicated by text in the display.There are eight different alarm messages. To remove alarm texts:

3 The release gate’s wings must not bedamaged or discoloured and it mustform a tight seal against the walls ofthe feed chamber.

Alarm text Description

The burner has stopped because the max. thermostat has beentriggered.The burner can be restarted using START once the max. thermostathas been reset.NB This function interlocks (in the hardware) all motoroperations and ignition.

The burner has stopped because the burner and boiler haveseparated. The burner can be restarted using START once the systemhas been correctly refitted.

The burner has stopped because the thermal contact onthe feed pipe has been tripped. The internal motor runs continuouslyfor 15 min. The burner can be restarted using START once the thermalcontact is reset.

The burner has stopped because the boiler temperature hasfallen below the set minimum value.The burner is restarted using START

The burner has stopped because the set number of ignition attemptshave failed.The burner can be restarted using START once the fault has beendealt with.

The burner has stopped because the fire has gone out.The burner is restarted using START

The burner has stopped because the external feed has run for toolong without any fuel having been fed.The burner can be restarted using START once the fuel is refilled andfed into the burner.

NB Option!The burner has stopped because the external unit (e.g. smoke detec-tor) has been tripped.The burner can be restarted using START once the fault has beendealt with.

Max. thermostat

Burner NOT in place

Back heat

Min. Temp. Stop

Ignition error

No Flame

Fault Ext. Feed

External Alarm

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THE FOLLOWING MUST ALWAYS BE CONSIDERED AND CHECKED

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Important information

NB To avoid hazardous situations, the feed current must always be switchedoff before you touch any part of the equipment. Only authorised persons maycarry out changes or repair the equipment.

The manual is intended for authorised persons. It describes adjustments to many basicfunctions in the burner. If these adjustments are used incorrectly, serious operatingproblems and hazardous situations may arise.

NB When the control system is started, the processor part is always discon-nected for around 180 seconds to allow any O2 sensor to heat up before it canbe used. If you want to bypass the countdown, press STOP once.

Parameter changesin the control systemare made using thebuilt-in menu sys-tem.

Button Description

Used to start the burner

Used to stop the burner

Used to move up through a menu and to change a parameterto a higher value. Removes information texts, e.g. alarm.

Used to move downwards through a menu and to change aparameter to a lower value.

Used to select a submenu, select a parameter andconfirm a changed value

Used to return to a previous menu. Used when changing a param-eter to return without changing the value.

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In the menus, the cursor is used to highlight the command line that can be changed.

When a parameter is changeable, the cursor changes from to .

The control system may be in one of the following modes: Start, Operation, Standbyor Stopped.When O2 is activated, XXX% (modulation) is shown in the top line of the display.When O2 is inactive MAN is shown.

Menu structure

Condition: Operation 85%

Temperature 60°C

O2 (Optional) 9.0% Act. Run Time 7 s Act. Stop time 3 s Required O2 (Optional) 8.5% Setting

Main Menu

Ignition

Start

Operation

Standby

O2 (Optional)

Reset all No

Ignition menu

Optical sensor 1

Start menu

Run Time Int. 6 s

Stop Time Int 4 s

Operation menu

Operating temp. 65°C

Run Time Int. 7 sStop Time Int. 3 sCleaning time 6 hMin. temp 20°CTime before stop 10 mStandby below 20%Time below 10 mRun Time Ext. 30 sStart External NoManual time 1 m

Pause menu

Run Time Int. 0 s

Stop Time Int 999 s

Delayed action 60 s

O2 menu (Optional)

O2 control NO

O2 8%

Calibrate O2 NO

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IGNITION SETTINGS

Use the arrow keys to access the Ignitionmenu as per the structure tree on page 11.

Optical sensor: Signal level when opticalsensor indicates flame• For O2 control analternative flame indication may be acti-vated: This means that at O2 regulation,the O2-signal is used initially to indicateflames.

START MODE

Press the START button to start the burner.The system’s start-up sequence is acti-vated.If the START button is held down, theinput feed screw is activated for 15 sec.and fuel is fed into the burning cup.The burner can be ignited manually orautomatically. If no flame is registered atstart-up, the automatic ignition sequencebegins and ignites the burner.Once a flame has been registered, theburner switches from Ignition Mode toStart Mode and then to Operating Mode.Use the arrow keys to access the Startmenu as per the structure tree on page 11.

Run Time Int: Indicates the run time ofthe internal screw during the start se-quence.

Stop Time Int: Indicates the stop time ofthe internal screw during the start se-quence.

STOP MODE

Pressing the STOP button once stops theburner and the combustion fan continuesfor a set time. Factory setting is 1 min. Ifyou press the STOP button twice, the fanalso stops. The display indicates that thesystem is in stopped mode.

OPERATING MODE

When the O2-regulation is activated, theburner’s combustion fan and input feedscrew are controlled in order to achieve setvalues for system temperature and percent-age O2-content. The current stop time andrun time of the internal screw can be readfrom the main menu. If the O2-regulation isnot activated, the burner goes into standbymode once the set system temperature of+6°C has been reached.Use the arrow keys to access the Operationmenu as per the structure tree on page 11.

Operating temp: The required systemtemperature is specified here.

Run Time Int: Indicates the run time of theinternal screw. With the O2-regulation acti-vated, the maximum run time is limited totwice the value indicated here.

Stop Time Int: Indicates the stop time ofthe internal screw.

Cleaning time: Indicates at what intervalthe burner fan will operate at 100% for 30sec.

Min temp: For manual operation withoutO2-regulation, the system’s min temperatureis indicated here. If the system temperaturefalls below this level, the burner will stop.The burner will also stop if the optical sensorcannot indicate the flame or, with O2-regula-tion, if the O2-content exceeds 18% formore than 5 min.

Time before stop: Indicates the time theoptical sensor must be without light for theburner to stop and an alarm to sound. It isalso the time the system temperature mustbe below the Min temp for the burner tostop and an alarm to sound.

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Standby below: Indicates modulation in %the burner must fall below in order to switchto standby mode. It is also the level thatmust be exceeded for the burner to switchback to operating mode. Only used whenthe O

2-regulation is activated and can be set

between 5 and 50%.

Time below: Indicates the length of timethe modulation must fall below Standbybelow for standby mode to be activated.

Run Time Ext: Indicates the run time of theexternal screw. The external screw startswhen the level sensor is activated and stopswhen the time has expired. NB During therun time the external screw is synchro-nised with the run times of the internalscrew.

STANDBY MODE

Once the system reaches the set temperature+ 6°C or the percentage modulation is lessthan the set value the burner switches tostandby mode. In standby mode the pilotlight is activated.Once the temperature has dropped 2°Cbelow the set value or the percentage modu-lation has risen over the set value, the burnerswitches back to operating mode.

Use the arrow keys to access the Standbymenu as per the structure tree on page 11.

Run Time Int: Indicates the run time of theinternal screw. If the set operating tempera-ture is exceeded by 8°C, this time is reducedto one third of the set value. If the value is“zero” this means that the pilot light func-tion is switched off.

Stop Time Int: Indicates the standby time ofthe internal screw.

Delayed action: Indicates how long theburner fan will run after the run time of theinternal screw. When the burner switchesfrom operating mode to standby, the burnerfan will also run for the time set here.

O2-SETTINGS

If O2-regulation is activated, certain pa-rameters for this function can be adjustedby the user. The current O2-content canbe read from the main menu.

Use the arrow keys to access the Standbymenu as per the structure tree on page11.

O2 control: Use this to select whether O2-regulation should be activated (YES) ornot (NO).

O2: Here the required O2-percentagecontent for 100% combustion air is set.TM3006 recalculates the required O2-content in relation to the combustion air,which means that the O2-content riseswhen the combustion air reduces.

Calib. O2 sen: By selecting YES, the O2-sensor is calibrated. In order to do this,the O2-sensor must be in circulating air(21% oxygen) and the control systemmust have been switched on for at leastthree minutes, so that the sensor canreach the correct temperature. Oncecalibration is complete the text shows O2

Calibration OK. If the O2-sensor does notproduce a fixed signal on calibration,control box 3006 judges that the sensoris wrong and continues using the oldstored values. If this happens, the O2-regulation must be disconnected and theold sensor replaced with a new one be-fore this function is used again.

For further instructions regarding the useof O2-regulation, see the separate manual

RESET

Use the arrow keys to access Reset as perthe structure tree on page 11.If YES is selected, all parameters in theburner’s control system will be reset totheir factory settings.

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FILL EXTERNAL SCREW WITH FUEL

First fill the external screw. Remove thedownward hose from the burner. It maybe useful to put a bucket under thehose.Set the estimated number of minutesusing the parameter Manual time andstart the external screw. The screw willoperate for the set number of minutes. Ifyou want to stop it early, press STOP.Reattach the downward hose to theburner.

STARTING THE BURNER

Press START. The burner makes 3 ignitionattempts with 2 min fuel feed beforeeach attempt. After that there will be analarm Ignition error. Remove the alarmtext with and start again. Thissequence should be repeated until theburner feed pipe is full and there is fuelin the cup.At this point the burner will ignite auto-matically.

During the ignition sequence, the displayindicates which phase the burner is in.

DESCRIPTION OF THE BURNER’SNORMAL IGNITION, OPERATING ANDSHUT DOWN SEQUENCE

Factory setting

A non- running burner is indicated bythe text STOPPED in the display

• START button, Fan for 20 s. to checkif there is a flame.

• If flame=> Start mode, the burnerruns at 60% for 2 min.

• If no flame=>Ignition mode

• Ignition mode=The fan stops, theignition element starts, material is fedin for three minutes. When the feed/dosing is complete, the fan starts atlow speed and increases to maxi-mum. The ignition element and fanrun for 6 min. If there is no flame, theignition sequence is repeated a maxi-mum of 3 times. If there is still noflame indicated in the system Ignitionerror The ignition sequence is indi-cated with the text Ignition attempt X

• When a flame is indicated, the igni-tion sequence stops and the startsequence commences. Indicated withtext Start.

• Start mode, the burner runs at 60%for 2 min.

• When heating is complete, theburner transfers to the set operatingmode. Indication with text Operation.

• In operating mode the normal dis-played is MAN. This indicates thatfeed times are fixed.

When O2-regulation is activated, a %-figure is shown instead, indicating thecurrent percentage modulation sup-plied by the burner.

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• The burner fan has a delayed runningtime of 60 s.

• At rest, no pilot light. Indicated with textStandby

• When the temperature falls and thesystem calls for heat = normal start

• In manual mode (NO O2-regulation) theburner works the temperature up to 6°Cover the set value. Once the temperaturehas fallen 2°C below the set value, theburner starts again.

• For O2-regulation, the burner works tomaintain continuous combustion. Theburner’s output power adapts to thecurrent energy consumption. So-calledadaptive regulation.

For further instructions regarding the use ofO2-regulation, see the separate manual.

EXTERNAL FEED

The external motor is controlled by thelevel sensor, the set run time coincideswith the internal motor

RESTART

If the burner was in operating mode (=started) before the power cut, it restartsautomatically when the power resumes.

INPUT POWER

The burner is pre-installed with a maxi-mum output of around 14.7 kW. Thedealer can, if necessary, customise themaximum output between 12 and 20kW. The input quantity of fuel may beeasily adjusted to compensate for varyingfuel quality.The recommended values are testedusing 8 mm pellets. NB! The pellet qual-ity has a significant effect on the result.

Fan Output Feed Note100% 20 kW 60/190% 18 kW 9/180% 16 kW 8/270% 14 kW 7/3 Factory setting65% 12 kW 6/4

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ENCLOSURE AND ASSEMBLY

The enclosure consists of a plastic boxwith a separate connection section.

The top lid must NOT be opened. Itprovides mechanical and electrical(static electricity) protection forthe printed circuit card.

If this part is opened without theapproval of EcoTec, ALL guaranteeswill cease to be valid.

The unit is fitted on a vertical wall usingthree screws. For the upper fixing pointthere is a recess for the screw head on therear of the box. Recesses for the two otherfixing points are under the lower lid of thebox (connection part).

The unit contains no parts (except afuse) that can be replaced by non-professionals.

A defective unit must always be returnedto the manufacturer.Max. ambient temperature is 40°C.

CONNECTION INSTRUCTIONS

The control system is connected to thehome’s distribution box using a permanentinstallation.Feed current: 230 VACMax. fuse: 10 A

The box contains screw-type connectionterminal boxes.

TRANSIENT PROTECTION

In order to protect the control systemagainst disturbances, additional compo-nents (the relay, solenoid valves etc.)should be transient-protected. (The DCrelay and solenoid valves with a diode andthe AC relay and solenoid valves with anRC filter.)

MAIN SWITCH

The system must be equipped with amain switch.

IMPORTANT

• Connect the box with phase and zero inthe right place. This does not affect thefunctions, but as the zero runs unbrokento the motors, there is a risk that therewill be full voltage at the motors whenyou think it is switched off.

• Check that the load on the outputsnever exceeds the system’s total maxi-mum load for the outputs (2000 W).Max. load per output is 1000 W.

Max. load (resistive) on the alarm output(potential-free relay output):1 A, 230 VAC, 30 VDC

HUVUDBRYTARE(Pelletsbrännare)

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THE MAIN SWITCH MUSTONLY BE SWITCHED OFF IN CONNECTION

WITH SERVICING AND MAINTENANCE.

REMEMBER TO SWITCHON THE MAIN SWITCH WHEN

SERVICING IS FINISHED.

Max. thermostatThe max. thermostat cable is prein-stalled on connection terminal board 4and 14 in the control system.Connected to the system’s max. ther-mostat.The max. thermostat must be equippedwith a manual reset.

Operational thermostatThe operational thermostat consists ofa separate temperature sensor andcable. For installation on connectionterminal board 5 and 15 in the controlsystem. The cable can be extended, ifnecessary, but should not be short-ened.The temperature is measured ana-loguely.The sensor should be fitted to theplunge pipe to ensure correct tempera-ture measurement.

Connecting an alarm unitA buzzer or light is connected to thepotential-free contact, connection termi-nal board K1 and K2.

The standard units are adapted for adrive voltage between 12 and 24 VDC.A cable is connected from connectionterminal board 13 (+VDC) to K1. (Con-nection terminal board 13 can also beused in connection with the feed to theexternal alarm unit, such as a flue detec-tor.)The alarm unit is connected betweenconnection terminal board K2 and 18(–VDC). (Connection terminal board 18 isalso used to connect the O2-sensor.)See connection table page 18-19.

Burner wiringThe multiconductor for the burner ispreinstalled in the control system. Theswitch is connected to the left side of theburner.

MicroswitchThe burner’s assembly on the boiler ismonitored using a microswitch.

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CONNECTION TABLE FOR CONTROL BOX 3006

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Control cabinet

Max. thermostat

Operating temperature

Lambda probe

Incoming feed

External screw

Multi-unit cable

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EBurner fan

Level sen.trans

Level sen.rec.

Optical sensor

Internal motor

Thermo gauge

Ignition element

Limit position

*) M:x = Multiconductor for burner

T:x = Thermostat cable for max. thermostat S:x = Operating temperature

Black -

Black

Burner

Red +

BrownBrown

BlueBlueWhiteWhiteOrangeOrange

Green/yellow

Black

Red +Black -

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TROUBLESHOOTING

The majority of all faults that may ariseare a direct result of defects in the pelletquality, and its handling or storage.Therefore, check your supply carefully.Preferably before you receive it.Remember it is for your safety that wepreprogrammed the burner to stop andemit an alarm if it cannot rectify the faultitself.

FAULT: No text in the display

CHECK: That the main switch is on andthat the current (F1=250 mA) in theburner’s control unit is complete.

ACTION: Turn on the main switch orreplace the broken fuse in the controlunit. NB Switch off the main switchwhen replacing the fuse. Contact aninstallation engineer.

The alarm text: * Back heat *

CHECK: Check if the resettable thermalcontact has been tripped.

ACTION: Press the button on the top ofthe thermal contact. Switch off the mainpower.

ACTION: Change the release gate’swings if they are discoloured or mis-shapen.

ACTION: Check that the flue damper isnot fully open and that the boiler’s fluesare free from fly ash.Fit backdraft damper.

The alarm text: * Max thermostat *

CHECK: If the boiler’s maximum thermo-stat has been tripped.

ACTION: Reset the button on the boiler’smaximum thermostat and restart. Com-mon causes are wood burning in com-bination with pellet burning. If the causeof overheating cannot be established,the operating temperature sensor mustbe checked.

The alarm text: * No Flame *

The burner has received an order to stopbecause the optical sensor indicated thatit cannot see light in the combustionchamber during operation.

CHECK: That the combustion chamber isnot full of ash.

ACTION: Remove the ash.

CHECK: That the optical sensor or opti-cal sensor pipe is not sooty and thuscannot detect light.

ACTION: Wipe the optical sensor. Ifcorrectly installed, the optical sensorshould not become sooty between nor-mal inspections. Air leakage or theburner being too close to a cooled com-bustion chamber surface causes soot tocollect, as does poor air supply to theboiler room. Deal with this as soon aspossible. If incorrectly installed, theoptical sensor may also overheat andstop detecting light. Contact an installa-tion engineer if you suspect incorrectinstallation.

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CHECK: Start the burner and check thatboth the drive motor and outfeed shaftand screwshaft turn round in the burn-ing cup.

ACTION: In the event of a fault, contactan installation engineer.

CHECK: Whether or not the internalstore’s level sensor indicates low fuellevel.

ACTION: Start the burner and check thatthe external screw starts and feeds fuelto the burner. If it does not, the levelsensors have reacted to counter pressurein the system and stopped the fuel feed.Open the boiler damper and clean fly ashfrom the flues. A poor draught is oftenthe result of a defective chimney, whichshould be dealt with as soon as possible.Even brick chimneys with large cooledsurfaces and “downdraught” can causecounter pressure, especially duringwarmer times of the year. In this case aflue gas fan should be installed. Consultan installation engineer for further ad-vice.

The alarm text: * Ignition error *

The burner has received a signal to stopbecause the optical sensor indicated thatit cannot see light in the combustionchamber during the ignition sequence.

The burner makes three attempts atignition.

ACTION: If the burner is equipped withhot-air ignition, contactinstallation engineer for advice.

For a manual start, check the opticalsensor.

The alarm text: * Error Ext. Feed*

This fault is due solely to a lack of fuel inthe burner’s internal store.

CHECK: That there are pellets in theexternal store.

ACTION: Fill up with pellets.

CHECK: That the gradient of the screw isnot too sharp (max 45°), or whether thefeed has stopped due to a dip havingformed in the bottom of the externalstore.

ACTION: Place the screw at a gentlerangle, and turn it backwards and for-wards a few times. The location shouldbe in the middle of the external store.

CHECK: That the external screw’s drivemotor functions and that the motor shaftdrives the screw spiral.

ACTION: Test the external motor sepa-rately for parameters p 11-13. Tightenthe socket head screw on the motorshaft’s bevelled section. In the event of amotor fault, contact an installation engi-neer.

CHECK: That the hose to the burner isnot too horizontal.

ACTION: Change the angle so the pelletsdo not get stuck.

CHECK: That a dip has not formed in theinternal store.

ACTION: A dip forms in the store onlybecause the pellets are damp or there aretoo many of them. Tap the store. Changethe pellets immediately. Damp pelletsmay cause a total stop or breakdown. Inthe event of overfilling, you must contactan installation engineer. A dip may alsoform when the store’s bottom angle istoo small.

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MAINTENANCE

• Be extra careful after a new deliveryor change of pellets.

• When checking the burning cup, theburner should always be removed.(Check that the three stop screws thathold the burning cup are tight, seepicture on page 4.)

• Knock or scrape away any coking inthe burning cup down to the feedscrew (This should be done once amonth or when necessary.).

• Check both the horizontal and bevel-led air openings in the primary ringthat may have compacted (cleanedusing a hacksaw blade).

• Check that the gear ring is touchingthe primary ring and can rotate easily,and that the rotary arm does not liftit. Check after cleaning that the pri-mary ring and secondaryair pipe are inplace.

REMEMBER TO SWITCH ON THE MAINCURRENT AFTER SERVICING.

• Check the optical sensor and clean asrequired.

• Check release gate’s seals on theburner’s internal store and clean asrequired. In the event of any deforma-tion or diiscolouration (leak) the wingsmust be changed.

• Check the hose connections betweenthe external feed and the burner, andreset after servicing.

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RAW MATERIALS

The pellet fuel can be manufacturedfrom various energy-producing rawmaterials. The most common is rawmaterials from wood, but there areseveral alternative raw materials alreadyavailable on the market.The raw materials have various character-istics that give them both advantagesand disadvantages as pellet fuel. Essen-tial factors are energy value, ash content,environmental impact, and, of course,price.

You should choose a fuel with the lowestcost per energy unit once you have takeninto account the fuel’s performance inthe boiler, ash content and its environ-mental impact.

The EcoTec pellet burner is designed tobe able to burn most types of pellet fuel.

PELLET QUALITY

The majority of the disruptions that canarise due to poor fuel quality are theresult of poor production, handling andintermediate storage before the fuelreaches the end customer.With high levels of fine chips, the defi-ciency is caused by the manufacturing

process and by separation during storageat the loading site. The occurrence ofsintering in the ash is due to silicateimpurities and cannot be ascertainedprior to combustion. Damp pellets mayarise in connectionwith intermediatehandling and transport.

If possible, check when you purchase thepellets that you are buying clean, drypellets and not chips.

DAMP PELLETS MUST BEDESTROYED IMMEDIATELY.

APPROVED FUEL SPECIFICATION

WEIGHT 600 – 750 kg/m3

ENERGY CONTENT 4.7 – 5.0 kWh/kg

SIZE/DIAMETER 6 – 12 mm

SIZE/LENGTH NB max. 35 mm

MOISTURE CONTENT max. 12%

ASH CONTENT/WEIGHT: (wooden pellets) 0.5 – 1%

FINES CONTENT/WEIGHT max. 3%

ASH MELTING TEMPERATURE min 1100°

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GUARANTEE TERMS

GENERALSahlins EcoTec AB (“EcoTec”) is responsible for faults in the product supplied by EcoTec on the termsspecified below.

The guarantee applies on condition– that the attached certificate of installation is completed and returned to EcoTec no later than one (1)

month after the installation has been completed.– that the product has been installed by an EcoTec authorised retailer.

COMPLAINTSThe guarantee only applies on condition that the purchaser complains of any fault in writing without delayno later than 2 weeks after the fault was discovered or should have been discovered. Faults not reportedwithin the specified guarantee period are not covered by EcoTec’s guarantee commitment.

GUARANTEE PERIODThis guarantee only applies to new products and is valid, unless otherwise specified, for a period of twenty-four (24) months from the date the product is purchased from the retailer and must be confirmed with areceipt, invoice or similar document.

SCOPE OF THE GUARANTEEEcoTec shall, without delay, deal with manufacturing and material faults by, at its own discretion, eitherrepairing faults in the product or replacing the product or parts thereof. EcoTec’s repair commitment does notinclude transport of the faulty or replaced product or part thereof, nor removal or assembly of such. AtEcoTec’s request, the faulty product or part thereof must be sent to EcoTec at the purchaser’s expense. Inaddition, EcoTec is not responsible in any way for direct or indirect losses, and EcoTec’s liability is limited toa sum corresponding to the invoice value of the faulty product.

LIMITATION OF LIABILITYThe guarantee does not cover:– faults that do not affect the use of the product and that do not cause the purchaser significant inconven-

ience.– faults caused as a result of changes made by the purchaser or interventions in the product not carried out

by a retailer authorised by EcoTec.– faults caused by the use of spare parts or consumables not compatible with the product. Such compatibil-

ity only applies concerning consumables and spare parts recommended by EcoTec.– faults caused by abnormal wear and tear, the purchaser’s use of the product in any way other than shown

in the user documentation or neglect by the purchaser or a third party or other circumstances beyondEcoTec’s control, such as transport damage, voltage faults, incorrect fuel, lightning, careless treatment andtheft.

– normal operating maintenance, such as adjustment, normal wear and tear or the need to procureexpendable accessories and simpler components such as fuses, cords, etc.

– damage caused by the product not meeting a national standard or safety requirements in a country otherthan the one where the product was purchased.

– costs as a result of adaptation or modification carried out by a retailer authorised by EcoTec that werenecessary to meet a national standard or safety requirements, or other costs for adaptation of the productdue to specifications being changed after the product has been supplied.

– costs caused as a result of the product being connected to a product not approved for connection by EcoTec.

OTHERThis guarantee does not affect the purchaser’s rights in accordance with the Consumer Purchases Act, nordoes it affect the purchaser’s rights in relation to the retailer as per the purchase terms. In the absence ofapplicable national legislation, the purchaser’s right to a guarantee is limited to what is contained in theseguarantee terms. EcoTec cannot be held responsible for direct or indirect damage as per other guarantees orcommitments with regard to this product.

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Our company concept is simple: Proximity, satisfied customers and respect for theenvironment. We work with authorised retailers who offer a full service. Our conceptof quality is based on high levels of technical competence and constant development.We manufacture burners from 7 kW up to 300 kW. We reckon these are the bestproducts on the market, and promise reduced heating costs.

We don’t view pellets as the energy source of tomorrow, but of today. The Earth’sresources are not inexhaustible, and there are limits to what the environment cancope with. It is therefore important to focus on renewable, environment-friendlyenergy sources that are also cheap.

If you have any views on our products, please ring, write or fax us.

Sahlins EcoTec AB Box 2103, SE-511 02 Skene, SwedenTel. +46 0320-20 93 40. Fax +46 (0)320-421 60

info@ecotec.net, www.ecotec.net.

EcoTec is environmentally certified in accordance with ISO 14001

The green fire