Operation and maintenance A4 Pellet burner

Transcription

1 Operation and maintenance A4 Pellet burner E MANUAL FOR A4 MODEL WITH 1 MAX. OUTPUT 20 kw

2 Store this manual somewhere easily accessiblefor future use. Please read through the manual carefully before starting up your EcoTec pellet system. The output of your pellet burner is calculated according to the maximum quantity of pellets that can be fed in and burned in the burning cup in 1 hour, (refers to firing using normal wood pellets as an average of our fuel specification). For larger output requirements (between kw), contact Sahlins EcoTec AB. IMPORTANT! The burner s green protective cap and the lid of the control unit must 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 an authorised EcoTec dealer. FOLLOW THE INSTRUCTIONS IN THE MANUAL CAREFULLY AND CARRY OUT THE RECOMMENDED CARE AND MAINTENANCE. 2

3 CONTENTS OVERVIEW OF THE BURNER PAGE 4 CONTENTS 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 PAGE 5 PAGE 6 PAGE 8 PAGE 9 PAGE 10 PAGE 16 PAGE 18 PAGE 20 PAGE 22 PAGE 23 PAGE 24 PAGE 25 3

4 OVERVIEW OF THE BURNER 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 4

5 OVERVIEW OF THE CONTROL SYSTEM Control box 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 the burner 9 Input voltage 230/240 VAC 10 Output external feed 11 Cover, terminal block 5

6 FUNCTIONAL DESCRIPTION PELLET FIRING Pellet firing with EcoTec s pellet burners is extremely similar to oil firing. A pellet burner requires only slightly more maintenance than an oil burner. We recommend maintenance measures such as prudent sweeping of the boiler. EcoTec pellet burners are supplied as standard with automatic ignition, but can always be lit manually. FULLY AUTOMATIC Operation of the burner and associated feedersystems is fully automated and is controlled via an in-built thermostat. Complete combustion takes place in a cost-effective and environment-friendly way by means of preset oxygenation using primary and secondary air. The burner can be adjusted for fuel with varying energy content. See fuel specification, page 23. The burner s control unit is preprogrammed and has default settings. The installation engineer can fine-tune the control function to optimise combustion in the boiler with regard to the fuel being used. Fuel feed of pellets from the external fuel store to the burner is fully automatic; it employs a feedersystem that is adjusted and controlled via the burner s control unit. The burner can also be supplemented with O 2 -regulation (lambda probe - this requires a fully sealed boiler). The burner then adjusts automatically to maintain optimum combustion in relation to fuel quality and actual energy consumption. See separate manual. 6

7 PELLET STORE THE FEEDER SYSTEM The feeder system is based on the safety principle of interrupting the flow of fuel by free fall (in the hose) between the external feed and the burner. NB AN ECOTEC BURNER MUST NOT BE COMBINED WITH ANY FEEDER SYSTEM OTHER THAN AN ECOTECORIGINAL FEEDER SYSTEM. NB Do not switch off the main power switch until maintenance is ready to commence. The following measures and checks should be performed each time ash is removed to ensure safe, trouble-free operation, or at least once a month until you have the necessary experience to judge required maintenance intervals. FUNCTIONAL DESCRIPTION ASH REMOVAL All combustion of solid fuel, even if it takes place in the automated system employed by EcoTec pellet burners, requires maintenance and servicing. The majority of the maintenance relates to the fuel and its quality; see comparison below. Good pellets contain no more than 0.5% ash, meaning that ash only needs to be removed every 3-4 weeks, depending on boiler type. Pellets with 2% ash produce enough ash to require weekly ash removal under the same conditions. Switch off the burner using the STOP button; wait until firing has died down and the burner has stopped. Wait a further 30 mins to allow the burner to cool. A plastic ash collector that can be connected to an ordinary vacuum cleaner is available as an optional accessory. A sheet-metal version is also available with built-in suction fan. NB ALWAYS EXERCISE CAUTION WHEN HANDLING ASHES, AS THEY MAY BE HOT. 7

8 EASY TO MANAGE EASY TO MANAGE Pellet burners from EcoTec are designed in line with the main principles we are accustomed to for oil-fired heating. The benefit of these main principles is convenient handling, where the location of the fuel store is not being restricted by the design of the boiler room. In terms of safety, separation of the burner and fuel store, in combination with a noncontinuous fuel feed between them provides increased protection against the spread of fire in the event of backburning. Damage resulting from incorrect handling, or poor function or installation will be limited to the burner s internal fuel store. In short, the internal store is only refilled with a limited quantity of fuel via the external feeder system at each filling. Fuel is fed through a tight-fitting outfeed that is synchronised with the external feed process. A thermal contact, located just outside the boiler on the fuel feed pipe, detects any heat spreading back into the fuel feed pipe towards the internal store. Should this occur, fuel already present in the fuel feed pipe will be fed into the boiler immediately, and refilling of the internal store will cease. The burner s control unit is linked to the boiler s maximum thermostat. In the event of an error on the operational thermostat, the maximum thermostat will step in and prevent the boiler from overheating. The burner is also designed to revert to normal operating mode following operational disruptions such as a power cut, fuel interruptions, etc. If this process fails, this is indicated in the display and the burner switches off. 8

9 THE FOLLOWING MUST ALWAYS BE CONSIDERED AND CHECKED 1 The main power switch must always be on. 2 Connections between burner and external feeder system must be properly 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: Alarm text Max. thermostat Description 3 The release gate s wings must not be damaged or discoloured and it must form a tight seal against the walls of the feed chamber. The burner has stopped because the max. thermostat has been triggered. The burner can be restarted using START once the max. thermostat has been reset. NB This function interlocks (in the hardware) all motor operations and ignition. SAFETY CHECKS / ALARM Burner NOT in place Back heat Min. Temp. Stop Ignition error No Flame Fault Ext. Feed External Alarm The burner has stopped because the burner and boiler have separated. The burner can be restarted using START once the system has been correctly refitted. The burner has stopped because the thermal contact on the feed pipe has been tripped. The internal motor runs continuously for 15 min. The burner can be restarted using START once the thermal contact is reset. The burner has stopped because the boiler temperature has fallen below the set minimum value. The burner is restarted using START The burner has stopped because the set number of ignition attempts have failed. The burner can be restarted using START once the fault has been dealt 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 too long without any fuel having been fed. The burner can be restarted using START once the fuel is refilled and fed into the burner. NB Option! The burner has stopped because the external unit (e.g. smoke detector) has been tripped. The burner can be restarted using START once the fault has been dealt with. 9

10 CONTROL SYSTEM / OPERATION Important information NB To avoid hazardous situations, the feed current must always be switched off before you touch any part of the equipment. Only authorised persons may carry out changes or repair the equipment. The manual is intended for authorised persons. It describes adjustments to many basic functions in the burner. If these adjustments are used incorrectly, serious operating problems and hazardous situations may arise. NB When the control system is started, the processor part is always disconnected for around 180 seconds to allow any O 2 sensor to heat up before it can be used. If you want to bypass the countdown, press STOP once. Parameter changes in the control system are made using the built-in menu system. Button Description Used to start the burner Used to stop the burner Used to move up through a menu and to change a parameter to a higher value. Removes information texts, e.g. alarm. Used to move downwards through a menu and to change a parameter to a lower value. Used to select a submenu, select a parameter and confirm a changed value Used to return to a previous menu. Used when changing a parameter to return without changing the value. 10

11 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, Standby or Stopped. When O 2 is activated, XXX% (modulation) is shown in the top line of the display. When O 2 is inactive MAN is shown. Menu structure Condition: Operation 85% Temperature 60 C O 2 (Optional) 9.0% Act. Run Time 7 s Act. Stop time 3 s Required O 2 (Optional) 8.5% Setting Main Menu Ignition Start Operation Standby O 2 (Optional) Reset all No Ignition menu Optical sensor 1 Start menu Run Time Int. Stop Time Int 6 s 4 s Operation menu Operating temp. 65 C Run Time Int. 7 s Stop Time Int. 3 s Cleaning time 6 h Min. temp 20 C Time before stop 10 m Standby below 20% Time below 10 m Run Time Ext. 30 s Start External No Manual time 1 m Pause menu Run Time Int. Stop Time Int Delayed action 0 s 999 s 60 s CONTROL SYSTEM / OPERATION O 2 menu (Optional) O 2 control NO O 2 8% Calibrate O 2 NO 11

12 CONTROL SYSTEM / OPERATION IGNITION SETTINGS Use the arrow keys to access the Ignition menu as per the structure tree on page 11. Optical sensor: Signal level when optical sensor indicates flame For O 2 control an alternative flame indication may be activated: This means that at O 2 regulation, the O 2 -signal is used initially to indicate flames. START MODE Press the START button to start the burner. The system s start-up sequence is activated. If the START button is held down, the input feed screw is activated for 15 sec. and fuel is fed into the burning cup. The burner can be ignited manually or automatically. If no flame is registered at start-up, the automatic ignition sequence begins and ignites the burner. Once a flame has been registered, the burner switches from Ignition Mode to Start Mode and then to Operating Mode. Use the arrow keys to access the Start menu as per the structure tree on page 11. Run Time Int: Indicates the run time of the internal screw during the start sequence. Stop Time Int: Indicates the stop time of the internal screw during the start sequence. STOP MODE Pressing the STOP button once stops the burner and the combustion fan continues for a set time. Factory setting is 1 min. If you press the STOP button twice, the fan also stops. The display indicates that the system is in stopped mode. OPERATING MODE When the O 2 -regulation is activated, the burner s combustion fan and input feed screw are controlled in order to achieve set values for system temperature and percentage O 2 -content. The current stop time and run time of the internal screw can be read from the main menu. If the O 2 -regulation is not activated, the burner goes into standby mode once the set system temperature of +6 C has been reached. Use the arrow keys to access the Operation menu as per the structure tree on page 11. Operating temp: The required system temperature is specified here. Run Time Int: Indicates the run time of the internal screw. With the O 2 -regulation activated, the maximum run time is limited to twice the value indicated here. Stop Time Int: Indicates the stop time of the internal screw. Cleaning time: Indicates at what interval the burner fan will operate at 100% for 30 sec. Min temp: For manual operation without O 2 -regulation, the system s min temperature is indicated here. If the system temperature falls below this level, the burner will stop. The burner will also stop if the optical sensor cannot indicate the flame or, with O 2 -regulation, if the O 2 -content exceeds 18% for more than 5 min. Time before stop: Indicates the time the optical sensor must be without light for the burner to stop and an alarm to sound. It is also the time the system temperature must be below the Min temp for the burner to stop and an alarm to sound. 12

13 Standby below: Indicates modulation in % the burner must fall below in order to switch to standby mode. It is also the level that must be exceeded for the burner to switch back to operating mode. Only used when the O 2 -regulation is activated and can be set between 5 and 50%. Time below: Indicates the length of time the modulation must fall below Standby below for standby mode to be activated. Run Time Ext: Indicates the run time of the external screw. The external screw starts when the level sensor is activated and stops when the time has expired. NB During the run time the external screw is synchronised with the run times of the internal screw. STANDBY MODE Once the system reaches the set temperature + 6 C or the percentage modulation is less than the set value the burner switches to standby mode. In standby mode the pilot light is activated. Once the temperature has dropped 2 C below the set value or the percentage modulation has risen over the set value, the burner switches back to operating mode. Use the arrow keys to access the Standby menu as per the structure tree on page 11. Run Time Int: Indicates the run time of the internal screw. If the set operating temperature is exceeded by 8 C, this time is reduced to one third of the set value. If the value is zero this means that the pilot light function is switched off. Stop Time Int: Indicates the standby time of the internal screw. Delayed action: Indicates how long the burner fan will run after the run time of the internal screw. When the burner switches from operating mode to standby, the burner fan will also run for the time set here. 13 O 2 -SETTINGS If O 2 -regulation is activated, certain parameters for this function can be adjusted by the user. The current O 2 -content can be read from the main menu. Use the arrow keys to access the Standby menu as per the structure tree on page 11. O 2 control: Use this to select whether O 2 - regulation should be activated (YES) or not (NO). O 2 : Here the required O 2 -percentage content for 100% combustion air is set. TM3006 recalculates the required O 2 - content in relation to the combustion air, which means that the O 2 -content rises when the combustion air reduces. Calib. O 2 sen: By selecting YES, the O 2 - sensor is calibrated. In order to do this, the O 2 -sensor must be in circulating air (21% oxygen) and the control system must have been switched on for at least three minutes, so that the sensor can reach the correct temperature. Once calibration is complete the text shows O 2 Calibration OK. If the O 2 -sensor does not produce a fixed signal on calibration, control box 3006 judges that the sensor is wrong and continues using the old stored values. If this happens, the O 2 - regulation must be disconnected and the old sensor replaced with a new one before this function is used again. For further instructions regarding the use of O 2 -regulation, see the separate manual RESET Use the arrow keys to access Reset as per the structure tree on page 11. If YES is selected, all parameters in the burner s control system will be reset to their factory settings. CONTROL SYSTEM / OPERATION

14 CONTROL SYSTEM / OPERATION FILL EXTERNAL SCREW WITH FUEL First fill the external screw. Remove the downward hose from the burner. It may be useful to put a bucket under the hose. Set the estimated number of minutes using the parameter Manual time and start the external screw. The screw will operate for the set number of minutes. If you want to stop it early, press STOP. Reattach the downward hose to the burner. STARTING THE BURNER Press START. The burner makes 3 ignition attempts with 2 min fuel feed before each attempt. After that there will be an alarm Ignition error. Remove the alarm text with and start again. This sequence should be repeated until the burner feed pipe is full and there is fuel in the cup. At this point the burner will ignite automatically. During the ignition sequence, the display indicates which phase the burner is in. DESCRIPTION OF THE BURNER S NORMAL IGNITION, OPERATING AND SHUT DOWN SEQUENCE Factory setting A non- running burner is indicated by the text STOPPED in the display START button, Fan for 20 s. to check if there is a flame. If flame=> Start mode, the burner runs at 60% for 2 min. If no flame=>ignition mode Ignition mode=the fan stops, the ignition element starts, material is fed in for three minutes. When the feed/ dosing is complete, the fan starts at low speed and increases to maximum. The ignition element and fan run for 6 min. If there is no flame, the ignition sequence is repeated a maximum of 3 times. If there is still no flame indicated in the system Ignition error The ignition sequence is indicated with the text Ignition attempt X When a flame is indicated, the ignition sequence stops and the start sequence commences. Indicated with text Start. Start mode, the burner runs at 60% for 2 min. When heating is complete, the burner transfers to the set operating mode. Indication with text Operation. In operating mode the normal displayed is MAN. This indicates that feed times are fixed. When O 2 -regulation is activated, a %- figure is shown instead, indicating the current percentage modulation supplied by the burner. 14

15 The burner fan has a delayed running time of 60 s. At rest, no pilot light. Indicated with text Standby When the temperature falls and the system calls for heat = normal start In manual mode (NO O 2 -regulation) the burner works the temperature up to 6 C over the set value. Once the temperature has fallen 2 C below the set value, the burner starts again. For O 2 -regulation, the burner works to maintain continuous combustion. The burner s output power adapts to the current energy consumption. So-called adaptive regulation. For further instructions regarding the use of O 2 -regulation, see the separate manual. EXTERNAL FEED The external motor is controlled by the level sensor, the set run time coincides with the internal motor RESTART If the burner was in operating mode (= started) before the power cut, it restarts automatically when the power resumes. INPUT POWER The burner is pre-installed with a maximum output of around 14.7 kw. The dealer can, if necessary, customise the maximum output between 12 and 20 kw. The input quantity of fuel may be easily adjusted to compensate for varying fuel quality. The recommended values are tested using 8 mm pellets. NB! The pellet quality has a significant effect on the result. CONTROL SYSTEM / OPERATION Fan Output Feed Note 100% 20 kw 60/1 90% 18 kw 9/1 80% 16 kw 8/2 70% 14 kw 7/3 Factory setting 65% 12 kw 6/4 15

16 INSTALLATION ENCLOSURE AND ASSEMBLY The enclosure consists of a plastic box with a separate connection section. The top lid must NOT be opened. It provides mechanical and electrical (static electricity) protection for the printed circuit card. If this part is opened without the approval of EcoTec, ALL guarantees will cease to be valid. The unit is fitted on a vertical wall using three screws. For the upper fixing point there is a recess for the screw head on the rear of the box. Recesses for the two other fixing points are under the lower lid of the box (connection part). The unit contains no parts (except a fuse) that can be replaced by nonprofessionals. A defective unit must always be returned to the manufacturer. Max. ambient temperature is 40 C. CONNECTION INSTRUCTIONS The control system is connected to the home s distribution box using a permanent installation. Feed current: 230 VAC Max. fuse: 10 A The box contains screw-type connection terminal boxes. TRANSIENT PROTECTION In order to protect the control system against disturbances, additional components (the relay, solenoid valves etc.) should be transient-protected. (The DC relay and solenoid valves with a diode and the AC relay and solenoid valves with an RC filter.) MAIN SWITCH The system must be equipped with a main switch. HUVUDBRYTARE (Pelletsbrännare) FÅR ENDAST BRYTAS VID SERVICE IMPORTANT Connect the box with phase and zero in the right place. This does not affect the functions, but as the zero runs unbroken to the motors, there is a risk that there will be full voltage at the motors when you think it is switched off. Check that the load on the outputs never exceeds the system s total maximum 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 16

17 THE MAIN SWITCH MUST ONLY BE SWITCHED OFF IN CONNECTION WITH SERVICING AND MAINTENANCE. REMEMBER TO SWITCH ON THE MAIN SWITCH WHEN SERVICING IS FINISHED. Max. thermostat The max. thermostat cable is preinstalled on connection terminal board 4 and 14 in the control system. Connected to the system s max. thermostat. The max. thermostat must be equipped with a manual reset. Operational thermostat The operational thermostat consists of a separate temperature sensor and cable. For installation on connection terminal board 5 and 15 in the control system. The cable can be extended, if necessary, but should not be shortened. The temperature is measured analoguely. The sensor should be fitted to the plunge pipe to ensure correct temperature measurement. Connecting an alarm unit A buzzer or light is connected to the potential-free contact, connection terminal board K1 and K2. The standard units are adapted for a drive voltage between 12 and 24 VDC. A cable is connected from connection terminal board 13 (+VDC) to K1. (Connection terminal board 13 can also be used in connection with the feed to the external alarm unit, such as a flue detector.) The alarm unit is connected between connection terminal board K2 and 18 ( VDC). (Connection terminal board 18 is also used to connect the O 2 -sensor.) See connection table page Burner wiring The multiconductor for the burner is preinstalled in the control system. The switch is connected to the left side of the burner. Microswitch The burner s assembly on the boiler is monitored using a microswitch. INSTALLATION 17

18 CONNECTION TABLE FOR CONTROL BOX 3006 CONNECTION TABLE Control cabinet Max. thermostat Operating temperature Lambda probe Incoming feed External screw Multi-unit cable 18

19 CONNECTION TABLE *) M:x = Multiconductor for burner T:x = Thermostat cable for max. thermostat S:x = Operating temperature Burner Black Black Red + Black - Red + Black - Brown Brown Red Red Blue Blue White White Orange Orange Green/yellow 19 Burner fan Level sen.trans Level sen.rec. Optical sensor Internal motor Thermo gauge Ignition element Limit position

20 TROUBLESHOOTING TROUBLESHOOTING The majority of all faults that may arise are a direct result of defects in the pellet quality, and its handling or storage. Therefore, check your supply carefully. Preferably before you receive it. Remember it is for your safety that we preprogrammed the burner to stop and emit an alarm if it cannot rectify the fault itself. FAULT: No text in the display CHECK: That the main switch is on and that the current (F1=250 ma) in the burner s control unit is complete. ACTION: Turn on the main switch or replace the broken fuse in the control unit. NB Switch off the main switch when replacing the fuse. Contact an installation engineer. The alarm text: * Back heat * CHECK: Check if the resettable thermal contact has been tripped. ACTION: Press the button on the top of the thermal contact. Switch off the main power. ACTION: Change the release gate s wings if they are discoloured or misshapen. ACTION: Check that the flue damper is not fully open and that the boiler s flues are free from fly ash. Fit backdraft damper. The alarm text: * Max thermostat * CHECK: If the boiler s maximum thermostat has been tripped. ACTION: Reset the button on the boiler s maximum thermostat and restart. Common causes are wood burning in combination with pellet burning. If the cause of overheating cannot be established, the operating temperature sensor must be checked. The alarm text: * No Flame * The burner has received an order to stop because the optical sensor indicated that it cannot see light in the combustion chamber during operation. CHECK: That the combustion chamber is not full of ash. ACTION: Remove the ash. CHECK: That the optical sensor or optical sensor pipe is not sooty and thus cannot detect light. ACTION: Wipe the optical sensor. If correctly installed, the optical sensor should not become sooty between normal inspections. Air leakage or the burner being too close to a cooled combustion chamber surface causes soot to collect, as does poor air supply to the boiler room. Deal with this as soon as possible. If incorrectly installed, the optical sensor may also overheat and stop detecting light. Contact an installation engineer if you suspect incorrect installation. 20

21 CHECK: Start the burner and check that both the drive motor and outfeed shaft and screwshaft turn round in the burning cup. ACTION: In the event of a fault, contact an installation engineer. CHECK: Whether or not the internal store s level sensor indicates low fuel level. ACTION: Start the burner and check that the external screw starts and feeds fuel to the burner. If it does not, the level sensors have reacted to counter pressure in the system and stopped the fuel feed. Open the boiler damper and clean fly ash from the flues. A poor draught is often the result of a defective chimney, which should be dealt with as soon as possible. Even brick chimneys with large cooled surfaces and downdraught can cause counter pressure, especially during warmer times of the year. In this case a flue gas fan should be installed. Consult an installation engineer for further advice. The alarm text: * Ignition error * The burner has received a signal to stop because the optical sensor indicated that it cannot see light in the combustion chamber during the ignition sequence. The burner makes three attempts at ignition. ACTION: If the burner is equipped with hot-air ignition, contact installation engineer for advice. For a manual start, check the optical sensor. The alarm text: * Error Ext. Feed* This fault is due solely to a lack of fuel in the burner s internal store. CHECK: That there are pellets in the external store. ACTION: Fill up with pellets. CHECK: That the gradient of the screw is not too sharp (max 45 ), or whether the feed has stopped due to a dip having formed in the bottom of the external store. ACTION: Place the screw at a gentler angle, and turn it backwards and forwards a few times. The location should be in the middle of the external store. CHECK: That the external screw s drive motor functions and that the motor shaft drives the screw spiral. ACTION: Test the external motor separately for parameters p Tighten the socket head screw on the motor shaft s bevelled section. In the event of a motor fault, contact an installation engineer. CHECK: That the hose to the burner is not too horizontal. ACTION: Change the angle so the pellets do not get stuck. CHECK: That a dip has not formed in the internal store. ACTION: A dip forms in the store only because the pellets are damp or there are too many of them. Tap the store. Change the pellets immediately. Damp pellets may cause a total stop or breakdown. In the event of overfilling, you must contact an installation engineer. A dip may also form when the store s bottom angle is too small. TROUBLESHOOTING 21

22 MAINTENANCE MAINTENANCE Be extra careful after a new delivery or change of pellets. When checking the burning cup, the burner should always be removed. (Check that the three stop screws that hold the burning cup are tight, see picture on page 4.) Knock or scrape away any coking in the burning cup down to the feed screw (This should be done once a month or when necessary.). Check the optical sensor and clean as required. Check release gate s seals on the burner s internal store and clean as required. In the event of any deformation or diiscolouration (leak) the wings must be changed. Check the hose connections between the external feed and the burner, and reset after servicing. Check both the horizontal and bevelled air openings in the primary ring that may have compacted (cleaned using a hacksaw blade). Check that the gear ring is touching the primary ring and can rotate easily, and that the rotary arm does not lift it. Check after cleaning that the primary ring and secondaryair pipe are in place. REMEMBER TO SWITCH ON THE MAIN CURRENT AFTER SERVICING. 22

23 RAW MATERIALS The pellet fuel can be manufactured from various energy-producing raw materials. The most common is raw materials from wood, but there are several alternative raw materials already available on the market. The raw materials have various characteristics that give them both advantages and disadvantages as pellet fuel. Essential factors are energy value, ash content, environmental impact, and, of course, price. You should choose a fuel with the lowest cost per energy unit once you have taken into account the fuel s performance in the boiler, ash content and its environmental impact. The EcoTec pellet burner is designed to be able to burn most types of pellet fuel. process and by separation during storage at the loading site. The occurrence of sintering in the ash is due to silicate impurities and cannot be ascertained prior to combustion. Damp pellets may arise in connectionwith intermediate handling and transport. If possible, check when you purchase the pellets that you are buying clean, dry pellets and not chips. DAMP PELLETS MUST BE DESTROYED IMMEDIATELY. APPROVED FUEL SPECIFICATION WEIGHT kg/m 3 FUEL ADVICE ENERGY CONTENT kwh/kg PELLET QUALITY The majority of the disruptions that can arise due to poor fuel quality are the result of poor production, handling and intermediate storage before the fuel reaches the end customer. With high levels of fine chips, the deficiency is caused by the manufacturing SIZE/DIAMETER SIZE/LENGTH 6 12 mm 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

24 GUARANTEE AND COMPLAINTS GUARANTEE TERMS GENERAL Sahlins EcoTec AB ( EcoTec ) is responsible for faults in the product supplied by EcoTec on the terms specified 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. COMPLAINTS The guarantee only applies on condition that the purchaser complains of any fault in writing without delay no later than 2 weeks after the fault was discovered or should have been discovered. Faults not reported within the specified guarantee period are not covered by EcoTec s guarantee commitment. GUARANTEE PERIOD This guarantee only applies to new products and is valid, unless otherwise specified, for a period of twentyfour (24) months from the date the product is purchased from the retailer and must be confirmed with a receipt, invoice or similar document. SCOPE OF THE GUARANTEE EcoTec shall, without delay, deal with manufacturing and material faults by, at its own discretion, either repairing faults in the product or replacing the product or parts thereof. EcoTec s repair commitment does not include transport of the faulty or replaced product or part thereof, nor removal or assembly of such. At EcoTec s request, the faulty product or part thereof must be sent to EcoTec at the purchaser s expense. In addition, EcoTec is not responsible in any way for direct or indirect losses, and EcoTec s liability is limited to a sum corresponding to the invoice value of the faulty product. LIMITATION OF LIABILITY The guarantee does not cover: faults that do not affect the use of the product and that do not cause the purchaser significant inconvenience. 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 compatibility 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 beyond EcoTec s control, such as transport damage, voltage faults, incorrect fuel, lightning, careless treatment and theft. normal operating maintenance, such as adjustment, normal wear and tear or the need to procure expendable 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 other than the one where the product was purchased. costs as a result of adaptation or modification carried out by a retailer authorised by EcoTec that were necessary to meet a national standard or safety requirements, or other costs for adaptation of the product due 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. OTHER This guarantee does not affect the purchaser s rights in accordance with the Consumer Purchases Act, nor does it affect the purchaser s rights in relation to the retailer as per the purchase terms. In the absence of applicable national legislation, the purchaser s right to a guarantee is limited to what is contained in these guarantee terms. EcoTec cannot be held responsible for direct or indirect damage as per other guarantees or commitments with regard to this product. 24

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28 The green fire Our company concept is simple: Proximity, satisfied customers and respect for the environment. We work with authorised retailers who offer a full service. Our concept of 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 best products on the market, and promise reduced heating costs. We don t view pellets as the energy source of tomorrow, but of today. The Earth s resources are not inexhaustible, and there are limits to what the environment can cope with. It is therefore important to focus on renewable, environment-friendly energy 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 Skene, Sweden Tel Fax +46 (0) info@ecotec.net, EcoTec is environmentally certified in accordance with ISO