Multi-fuel oil burners NORTEC WB

Transcription

1 Multi-fuel oil burners NORTEC WB Installation manual Models WB60, WB120, WB230, WB

2 Read carefully the Guide before installing and using the burner Nortec WB! Installation and start works have to be carried out only by specialists. Power supply must be switched off before the works start! Neglecting safety rules can cause an accident. Dear customer! Thank you for purchasing NORTEC products. We do everything to make sure you use NORTEC equipment effectively for a long time! 1. Multi-fuel burners NORTEC WB features NORTEC WB burners use waste engine and transmission oil, kerosene, diesel oil, light fuel oil, liquid animal and vegetable oil. Don t use as fuel: flammable liquids such as gas, ester, acetone, spirit etc. The burners combine the functions of fuel supply, heating, spray and air supply, ignition and flame supervision, so achieving automatic control of the combustion process. Thanks to their robust and high-quality design NORTEC burners have the following features: 1. Well-automated fuel supply. NORTEC burners are low pressure burners and compressed air supply with the pressure from 0.15 to MPa is required for good fuel spray. 2. Optimum mix of air and fuel, stable flame and efficient combustion. The burners use air swirl technology with a sparger that provides fine and even mix of sprayed fuel and secondary air, stable, complete and economic combustion. 3. Safe, reliable, automatic control. NORTEC burners are equipped with an advanced control and safety system from Siemens. It stops fuel supply and combustion process in case of emergency. Automatic control of fuel temperature, fuel level in the chamber of preliminary heating, ignition and flame, the system of automatic shutdown and restart make NORTEC WB burner easy and safe to use. 4. Flexible installation. Each burner is equipped with long combustion tube and sliding flange that allows to use the burner with any boiler and heat generator. 5. Easy maintenance. The burners are easy to dismantle for regular cleaning and service. 2

3 2. Multi-fuel burners NORTEC WB description and features NORTEC WB burners are designed in 2 frames of typical sizes (see section 4). Models WB60/120 (pic. 1) have one line to connect compressed air and one pressure regulator. Models WB 230/270 (pic. 2) have two lines to connect compressed air and two pressure regulators what follows the principle of two-stages start. Photocell Combustion tube Ignition transformer Nozzle for adding fuel Control chamber with an indicator of emergency shutdown Electric socket Preliminary fuel heater Electromagnetic valve Fuel heating thermostat Air regulator with a moisture separating filter and manometer Pic. 1 Burners NORTEC WB60 and WB 120 Electromagnetic valves Combustion tube Diffuser Preliminary fuel heater Photocell Ignition transformer Fuel heating thermostats Control chamber with an indicator of emergency shutdown Fan electric engine Air regulators with a moisture separating filter and manometer Electric socket Pic. 2 Burners NORTEC WB230 and WB270 3

4 Technical features of the burners NORTEC WB: Model Heat power kw Air consumption m 3 /h Air pressure MPa Fuel consumption kg/h Power consumption kw (voltage/frequency) V/Hz WB ,15-0,3 3,65 6 1,5 (220/50) WB ,5 0,2-0,3 6, ,5 (220/50) WB ,2-0, ,6(220/50) WB ,2-0, ,6(220/50) Number and value of nozzles Weigh t, kg 1 / о 36 2 / о 37 2 / о 45 3 / о 45,5 The sizes of burners see section Diagram and function of NORTEC WB burners Compressed air line 1 Primary air regulator 1 Solenoid valves Compressed air line 1 Primary air regulator 2* Primary air Lifting unit with a pump and filter fuel float nozzles ** Preliminary fuel heater External fuel tank * *not in the models NORTEC WB60 and WB120 ** model NORTEC WB60 has 1 nozzle, WB120 and WB230 have 2 nozzles each and WB nozzles 1. After getting a signal from the float placed in the preliminary fuel heater box the pump of the lifting unit starts filling the box. At some point depending on the position of the float a micro switch goes off which means that the box is full and the pump is off. 2. The thermostats of the preliminary fuel heating box set the maximum and minimum temperature for heating the fuel. 3. From the thermostats signal the heaters start heating the fuel. At the minimum temperature of the fuel one of the thermostats switches off and only one heater remains to work. 4. As soon as the given temperature of the oil is reached, the second heater switches off and the burner gets ready to blow off the chamber of combustion. At this moment the fan of secondary air works and the primary air valve is closed. 4

5 5. After the blow-off is finished, the control chamber sends a signal to start ignition and opens the electromagnetic valve for compressed air line 1. The air goes through the filter separating moisture that has a pressure regulator and manometer. The amount of pressure for primary air of line 1 is set within MPa. 6. While going through the nozzle primary air causes vacuum on the fuel line and it starts sucking the heated fuel from the preliminary heater. 7. In the flow of primary air the fuel gets atomized (becomes finely dispersed) and mixes up with a swirled flow of secondary air. 8. The spark sent to the ignition electrodes inflames air and fuel mix. The photocell marks the presence of flame, and the ignition process begins. 9. After a while the control chamber sends a signal to open the electromagnetic valve of line 2 (not in NORTEC WB 60/120 burners) and the burner starts working at full power. 10. For models NORTEC WB 60/120 full power of a burner is shown by the amount of primary air pressure in line 1, and for models NORTEC WB 230/270 it is shown by the amount of pressure in both inlets. 11. If the fuel level in the preliminary heater gets lower a certain level, the float goes down and blocks the pump contact. The fuel is added in the heater. 12. If the flame goes out when the fuel runs out because of too high primary air pressure or due to other reasons, the photocell switches the burner off and the error signal turns on. Manual restart is needed. 13. If the temperature of the fuel in the heater is lower than it was given on the thermostat, the burner stops working and heats the fuel up to the given temperature. The restart is automatic. 4. Design, main elements and sizes of NORTEC WB burners Pic.3 NORTEC WB burners elements Pic.4 NORTEC WB burners dimensions 5

6 # Element name (pic.1) 1 Diffuser (not used in models WB60 and WB120) 2 Combustion tube 3 Asbestos heatproof pad 4 Installation flange 5 7-pin socket for power and fuel pump connection 6 А, B Thermostats unit for preliminary fuel heating 7 Preliminary fuel heater 8 Burner shell 9 Fan engine 10 Socket for compressed air connection 11 Control chamber with an indicator of emergency shutdown 12 Drain tap of the preliminary heater 13 Ignition transformer 14 View hole 15 (1),(2)* Electromagnetic valves (solenoids) 1 and 2* of air lines 16 (1),(2)* Air filters separating moisture and regulating primary air pressure in lines 1 and 2* 17 Drain tap of the preliminary heater 18 Fuel way inlet * Air line 2 is in NORTEC burners WB 230 and WB 270 Dimension and set-up sizes of burners NORTEC WB Size WB60/120, mm (pic. 2) WB230/270 A B C D E F G H I L M8 M8 M Burner head (electrodes and dispenser position) adjustment Consistent ignition, optimum flame shape and the most efficient combustion depend on correct adjustment of such elements as dispenser, nozzles, combustion tube and ignition electrodes in relation to each other. An incorrect electrode position causes inconsistent ignition or contamination of the electrodes. An incorrect dispenser position may change the flame shape and burner power, cause drops of unburnt fuel on the bottom of the combustion chamber. To adjust the burner head correctly use the diagrams (pic. 5 and pic.6) and the chart showing distance between the elements. Before starting the adjustment take the combustion tube off by unscrewing 4 fixing screws that attach the tube to the burner shell. Adjustment of the burner with 3 nozzles (WB 270) is similar to the one for the burner with 2 nozzles (WB 230). 6

7 Pic. 5 Burner with 1 nozzle Pic. 6 Burner with 2 and 3 nozzles # Element name (pic. 1) 1 Diffuser (not for models WB60 and WB120) 2 Dispenser 3 Nozzle 4 Electrode 5 Combustion tube Burner model Relative distance between elements (mm) A B C D WB 60/ WB 230/ A dispenser position affects relation of the volumes of straight air going along the outer edge of the dispenser and swirled air going through the dispenser blades. If distance A gets bigger, the volume of straight air grows, fuel mixes with air at lower speed, the flame grows higher and becomes less consistent. If distance A gets smaller, the flame becomes less intensive, air and fuel mix at higher speed, the flame gets shorter and wider. 7

8 6. Secondary air shutter adjustment A secondary air shutter is used to adjust the burner according to back pressure in the combustion chamber to get maximum fuel combustion. NORTEC WB burners are single-stage with manual adjustment of the shutter. To do the adjustment loose screw A (pic. 7) and get the amount of CO 2 in waste gas within 10-11,5% by adjusting the air shutter, then tighten screw A. Pic.7 Secondary air shutter 7. Burner power (primary air pressure) adjustment Pressure regulator cap Air inlet Inlet connector for compressed air Manometer Drain filter valve Pic. 8 Primary air control with air filter 8

9 Burner power is regulated by changing primary air pressure. To maintain combustion primary air pressure in inlet 1 with open electromagnetic valve has to be more than 0.15 MPa and less than 0.3 MPa. This value is set on the regulator for a burner with one air line (NORTEC WB60/120) and on a regulator of line 1 (left manometer) for burners with two air lines (NORTEC WB230/270). To adjust primary air pressure pull the pressure regulator cap up and rotate it to increase or decrease the pressure. To increase pressure rotate the regulator cap clockwise, to decrease it rotate the cap counterclockwise. After adjustment press the cap lightly to get it back to its start position. The set pressure is reflected on the manometer of each regulator. The pressure in the second line of burners NORTEC WB 230/270 can be more than 0.4 MPa and is chosen according to the allowed boiler power. NB! Sometimes the manometer shows the set pressure value with a closed electromagnetic valve, but after it is open, the pressure falls abruptly. It s important to get the set pressure value by rotating the cap when the valve is open. In case of condensed vapor in the drying filter box, pour it out by pressing the drain valve head. 8. Preliminary fuel heating temperature Consistent fuel combustion are provided with fine spray and ignition. For this reason, the fuel is heated in the preliminary heating chamber where fuel viscosity is lowered. The preliminary heating chamber has two heaters each of which is controlled by its own thermostat. Thermostats knobs are placed on the front board of the heater (pic. 9). Thermostat 1 Thermostat 2 Pic. 9. Regulating thermostats 9

10 Thermostat 1 (top thermostat) controls switching on and off the burner automatic system. It must set on 0 if diesel or kerosene are used and in case of other fuel types it must be set on the temperature indicated in the chart below: Fuel type Thermostat 1 Thermostat 2 temperature, о С temperature, о С Diesel 0 0 Kerosene 0 0 Waste motor oil Waste transmission oil Vegetable oil After the burner is turned on, both heaters get switched on and fuel heating begins. As soon as the fuel is heated up to the temperature set on the thermostat 1, the burner control chamber starts working and the ignition begins, then the heater 1 switches off. The heater 2 is on to keep the fuel temperature up to its working value. NB! Fuel characteristics may differ a lot. Generally, starting the burner first time set thermostat 2 on its maximum temperature at which fuel doesn t start boiling yet. Set thermostat grades lower than thermostat 2 9. Photocell, fault indicator and controller Photocell is a flame-monitoring device. If the burner hasn t started up or the flame has gone out suddenly, the photocell sends a signal for emergency shutdown of the burner. In 10 seconds after the photocell discovers flame absence, the burner will be shut down and the emergency indicator will be switched on the control chamber. NB! If the photocell is exposed to intense room light that gets inside the burner through the view hole, the burner may stop working correctly. Keep the view hole away from intense light source. Emergency shutdown indicator is placed on the control chamber surface and it looks like a rubber red button. In case of emergency the control chamber switches off the burner and the emergency light turns on inside the indicator. NB! In case of emergency shutdown the burner s work can be resumed only after a complete fix of the emergency situation. Then the burner can be manually restarted. To restart the burner manually press the emergency indicator button until it clicks. The indicator will switch off and the burner will start up again. If necessary an emergency signal (lamp or ring) can be connected to inlet T1 as it is shown on the diagram of burner electrical wiring (see below). NB! To prevent premature manual restart the control chamber has a restart delay for 3 minutes after emergency shutdown. Control chamber Siemens LOA24.171B27 is placed on the right above the burner electric engine. It controls safety and consistency of the burner work in automatic mode. The control chamber has the following work periods: Emergency shutdown delay, Period before flame sec. Blow-off, sec. Ignition, sec. control start, sec

11 10. Electric wiring diagram NB! Installation, connection and adjustment works on burners NORTEC WB must be carried out only by qualified staff having a pass to electric installation, experience in service and installation of these burner types and authorized by the producer or official distributer of NORTEC equipment. Н3 Burner socket To the pump of a lifting unit Pic. 10 Electric diagram of burners NORTEC WB 60/120 11

12 Н3 Burner socket To the pump of a lifting unit Pic.11 Electric diagram of burners NORTEC WB 230/270 Electric diagram symbols: K1: Heater 1 K2: Heater 2 K3: Heating elements of fuel inlets H1: Thermostat 1 H2: Thermostat 2 H3: Floating switch of a fuel pump LOA24: Control chamber of the burner TA: Ignition transformer V1: electromagnetic valve of air inlet 1 V2: electromagnetic valve of air inlet 2 M: burner fan engine FR: photocell HL: external emergency shutdown signal F: cutout (16A) TC: boiler thermostat TS: safety thermostat Electric diagrams of NORTEC burners WB 230 / 270 have an electromagnetic valve for compressed air inlet 2. 12

13 11. Lifting unit A lifting unit (pic. 12) has a gear pump with its own electric engine, a flange to connect fine fuel filter and a set of flexible tubes one of which has a sieving fuel inlet on the end. Electric engine To the burner (via blue flexible tube) Fuel filter flange To the fuel box (via flexible tube with a fuel inlet) Base box Gear fuel pump Pic. 12 Lifting unit with a fine fuel filter Instead of a fine fuel filter any car oil filter with standard rim diameter and screw can be used. Cargo vehicle filters are more long-lasting because of their large volume. Before installing an oil filter fill it with fuel and put some on a rubber o-ring. Assembling and dismantling the filter should be done with a catch hook that can be bought in a car parts shop. The lifting unit has to be installed on the main fuel box, if it is placed in the room next to the burner, or on the waste fuel box next to it, if the main box is not placed in the room. In the latter case the fuel flow from the main box to the waste one has to be organized. Electric connection of the lifting unit is done according to the burner electric diagram (pic.10 and 11) The base box of the lifting unit must be grounded! NB! To keep fuel clean, a sieving fuel inlet needs to be installed so that its lowest part was no less than cm from the bottom of the fuel box. It will prevent water and solid dregs from getting into the burner. It is better to have a floating fuel inlet. For this purpose, any suitable float (sanitary or an empty plastic bottle) can be adjusted to it. It is recommended to use a limiting chain or wire which will not let the fuel inlet to go down to the bottom of the box. (pic. 13) 13

14 So, the fuel intake will mostly happen from the top, cleanest layers and, thus, service intervals for the burner will increase a lot. It is recommended to do the cleaning and service of the fuel box to get rid of solid dregs and moisture concentrating on the bottom of the box at least once a month. That is why, while installing the fuel box, one of its walls needs to be inclined and a drain tap adjusted to its lowest part. Float limiting chain Fuel tank to the pump sieving fuel inlet fuel dregs and moisture Pic.13 Floating fuel inlet diagram NB! Service intervals and the burner lifetime directly depend on the purity of the fuel. It is recommended to filter the fuel before pouring it into the fuel box, settle the vegetable oil in cold environment at least for 1-2 weeks before use. Change the filtering element of the lifting unit at least once a month. 12. Installation of the burner and fuel system Install the burner on the furnace of a boiler or heat generator using a set-up flange 4 and an asbestos pad 3 (pic. 4). To do that: 1. Loose the flange screw so that the burner combustion tube 2 could move easily in the flange hole. Draw the flange beaks apart with a big screwdriver, if needed. 2. For burners WB230 and WB270, dismantle diffuser 1 by unscrewing three locking screws. 3. Put the flange on the combustion tube with its flat part to the furnace and adjust it on the combustion tube. Length of the combustion tube sticking out into the combustion chamber is indicated in the manual for your boiler (heat generator). Calculating a place for the flange take the thickness of pad 3 and the length of diffuser 1 into account. (pic. 4). 4. Tighten the flange screw so that the burner had a horizontal position after installation. Don t tighten too much to avoid breaking the flange. 5. Put on a pad and diffuser, tighten the locking screws of the diffuser. 14

15 6. Connect the burner and the furnace and fasten the flange with four screws. Tighten the flange screws diagonally so the pad was pressed to the furnace evenly. Don t allow the flange inclination error! After installing the burner, install the lifting unit on the fuel box. (pic. 12). Adjust a fuel inlet in the fuel box as it is shown on pic. 13 and connect the flexible tube of the fuel inlet with the pump nozzle. Set the nozzle in the hole 18 (pic.4) of the burner preliminary heating box. The nozzle is an angle brass unit with carving and a pad. It is screwed onto a blue flexible tube. Disconnect the nozzle from the flexible tube and put its carving part with a pad inside the box into the hole 18 so that the outlet hole of the nozzle looked down. Put a nut of the blue flexible tube on the carving from the outside and tighten until the connection is stationary and leakproof. NB! The nozzle hole must look down for safe fuel entry. Connect the end of the blue flexible tube to the pump nozzle (pic.13). Install the filtering element from the kit on the flange of the lifting unit (pic.13) For that, first fill the element with fuel and put some fuel on a rubber ring pad to make the connection leak-proof. NB! Further on it is possible to use any suitable car oil filter as a filtering element. Using cargo vehicle filters will increase service intervals and help the pump work thanks to their big volume and large surface of the filtering element. Connect an oil-resistant flexible tube to the nozzle for fuel flow (pic.1) and return it to the main fuel box or a metal box with at least 5-liter volume in case of accidental overflow of heated fuel from the heater box. So you will keep your room tidy and avoid losing the fuel. NB! The main fuel box must NOT be higher the drain nozzle of the preliminary heating box (pic.1). Otherwise the fuel will get into the heater uncontrollably and cause fuel overflow what may lead to a fire hazard situation. If the fuel box is below the burner, set up an electromagnetic locking valve on the fuel-supply line by connecting it into a gap of the power-supply circuit of the fuel pump. Examples of correct and incorrect installation of the fuel box in relation to the burner can be found on pic. 14: 15

16 CORRECT Fuel tank Fuel pump Preliminary heater INCORRECT! INCORRECT! Pic. 14 Examples of installation of the fuel box in relation to the burner 13. Electrical connection of the burner ATTENTION! Works on electrical connection and start-up of the burner must be carried out only by competent staff who are allowed to work on electrical connection, have experience in burners installation and are authorized by the producer or an official distributor of NORTEC products! Electricity must be switched off before the works start! Ignoring safety rules may cause emergency! Damage caused by incompetent installation can not be covered by warranty! 16

17 1. Switch off the electricity on the supply line. 2. Connect the cable of the lifting unit pump to suitable inlets of the burner outer part. (pic. 10, 11). 3. Connect the outer security thermostat and the heater thermostat into a gap of the powersupply chain as it is shown on pic.10, Connect the grounding of the lifting unit and burner. 5. Connect the power-supply chain to the burner outer part according to the pictures 10, Check all the connections, tighten the locking screws and check isolation. 14. Burner start-up Add litres of fuel into the preliminary fuel heater box so the fuel fills up to ⅔ of the box. Connect air lines of the compressor. Make sure output pressure of the compressor is at least 4 atm and the compressor capacity is enough for this burner model. Open the compressor tap and set all the necessary values for air pressure in lines 1 and 2 (see section 7). For consistent ignition keep the pressure in lines 1 and 2 at MPa. NB! In some cases when the electromagnetic valve is closed, the manometer shows the set pressure value, but after the valve gets open, the pressure falls immediately. Turning the regulator cap get the pressure value back with the electromagnetic valve open. Set the temperature in the preliminary fuel heater using thermostats 1 and 2 (6A and 6B on pic. 3) as it is shown in section 8. Connect the outer burner part to the relevant part on the burner base. The burner will start working according to the scheme described in section Regulating burner work Due to back pressure from the combustion chamber of the boiler (heat generator) the burner power and secondary air volume may need to be regulated. The burner power depends on the volume of primary air, hence on pressure set on the regulators 16(1) and 16(2) (pic. 3). Setting the burner power at the first stage keep the consistency of ignition. Don t increase the value more than 0.3 MPa to avoid losing the flame. At the second stage (for burners WB 230 and WB 270) the pressure can reach 0.4 MPa and depends on the consistency of this burner work at full power with this boiler model. Current burner power is defined by fuel consumption which is approximately 1 kg of fuel for 10 kw of burner power at rated operation conditions. So, if you know the fuel consumption per hour, you can define burner power in this boiler with this fuel. It is impossible to define exact burner power value because of different heat capacity of fuel types used for these burners. 17

18 NB! Burner power must NOT be more than rated combustion chamber power. Set the burner power at about 80% from the rated boiler power. Otherwise, there may be burnout of the combustion chamber. 4 The amount of secondary air is regulated by changing the position of the secondary air shutter (pic.7) as it is described in section 6. Work diagrams for the burners are shown on pic. 15. mbar WB60 WB120 WB230 WB270 kg/h Pic. 15 Work diagrams of burners NORTEC WB 16. Main troubles and their solving methods Troubles in this section are caused by ignoring the information in this guide or other reasons not connected with equipment faults. In case of an equipment fault trouble we recommend you to call an authorized NORTEC service center or the place where the equipment was purchased to consult a specialist. NB! Non-authorized repair works make your warranty on NORTEC equipment invalid! Restart the burner after trouble shooting by pressing the red button of the emergency shutdown indicator (section 9). 18

19 Trouble Possible reason Solving method Burner does not start after start-up or works inconsistently giving out an error Fuel does is not delivered to the preliminary heater box Fuel flows out via the drain hole of the heater box Primary air pressure in line 1 is set beyond recommended value. Fuel does not heat up to necessary temperature. There is too much moisture in the fuel. There are mud or solid dregs in the fuel. There is too much synthetic oil in the fuel. Fuel does not ignite properly. Littered sieving filter in the preliminary fuel heating box. Moisture in the preliminary heating box. Littered nozzles. Lifting unit pump is not connected. No fuel in the main fuel box. Littered fuel inlet. Fine cleaning filter is exhausted. Fuel tube is pinched. The float is hung up in the heater box. The lifting unit and burner are too far from each other. Fuel is heated up too much. Regulate primary air pressure value according to section 7. Increase fuel heating temperature value according to section 8. Let the fuel stand before use. Adjust the floating fuel inlet according to section 11. Replace the filtering element according to section 11. Clean the fuel box, let the fuel stand and adjust the floating fuel inlet according to section 11. Add some mineral oil into the fuel. It should be 30% fuel, 70% mineral oil. or Add 10-20% of diesel to the fuel volume. Check the fuel. Replace it or add diesel. Combine proportion experimentally. Clean the filter. Replace the filtering element of the lifting unit. Clean the heater box from dregs and soot. Pour moisture out via drain tap 17 (pic.3). Adjust a floating fuel inlet according to section 11. Use an authorized service center NORTEC to clean the nozzles. Clean the fuel system thoroughly, replace a filtering element of the lifting unit. Check the connection and connect the pump according to section 13. Add fuel to the box. Clean the fuel inlet, clean the fuel box from dregs and moisture, set the floating fuel inlet according to section 11. Replace the filtering element according to section 11. Remove the pinch. Release and work on the float. Clean the box from dregs and resin. Move the fuel box closer to the burner or set up another box next to the burner. Make the fuel line cross section bigger. Turn down the temperature of fuel heating according to section 8. 19

20 Compressed air is not delivered to the burner or its pressure is not enough The burner power is lower than indicated The float is hung up in the heater box. The compressor is switched off. The compressor does not comply with the burner by its capacity. Pressure set on the compressor is too low. Air tube is pinched or broken. Condensed water in filters, settlers of regulators 16 (pic. 3). Incorrect burner adjustment in the combustion chamber. Incorrect regulation of secondary air use. Low primary air pressure in lines 1 and 2. Release and work on the float. Clean the box from dregs and resin. Switch the compressor on. Replace the compressor based on the information in section 2. Set the pressure on the compressor within 4-5 atm. Check the air connection and solve the trouble. Press the drain valve and pour condensed water out. If necessary, turn the glass cap of the settler off and clean the sieving filter Regulate the combustion tube position according to the guide on the boiler or heat generator. Regulate the shutter position according to section 15 or call a specialist from NORTEC service center to do the adjustment. Regulate primary air parameters according to section 15 call a specialist from NORTEC service center to do the adjustment. To consult a NORTEC representative, please, call: 8 (495) Service and warranty You have purchased reliable long-life equipment from NORTEC. For long and smooth use of NORTEC WB burners follow service intervals, regularly monitor the burner and fuel systems, timely replace the filtering element of the lifting unit and clean the preliminary heater, fuel inlet, nozzle unit from dregs, soot and mechanical dirt. Do not allow dregs and moisture to accumulate in the fuel box, timely pour condensed water out of the fuel box, the preliminary heater box and moisture separating filter of the air line. Cleaning intervals depend on fuel quality and purity. Normally, a service interval is 1-2 weeks, if waste oils are used. NB! Do not use the burner without cleaning for a long time as it will cause difficult-toremove dregs on heating elements, float, nozzles and sparger. To clean the preliminary heater box use a detergent. To remove dregs and soot from nozzles and sparger use acetone. To clean the sparger and nozzles take the burner off the furnace without changing the flange position on the combustion tube. 20

21 NB! In case of heavy contamination in the nozzles unit which requires dismantling of the burner, call a specialist in an authorized NORTEC service center. Call a specialist from an authorized NORTEC service center at least twice a year to maintain smooth work of the burner. Warranty period of NORTEC WB burner is established by the Russian Federation law as 12 months since the purchase of a burner from an authorized NORTEC distributor. Equipment is repaired under warranty after a buyer shows a filled warranty certificate for the burner with a stamp of the distributor and a receipt (invoice) with the date of purchase. Warranty turns invalid in the following cases: 1. Use and service conditions are different from the indicated in the guide. 2. Using inflammable substances such as gas, spirit, ester, acetone etc. as fuel. The producer is not responsible for an outcome of such substances use in NORTEC burners. 3. Mechanical damage of the burner or pump. 4. Non-authorized dismantling, construction change or repairing of the burner. 5. No documents confirming the fact of purchase from an authorized distributor. 18. Supply package NORTEC WB burner supply package consists of: # Name Amount, pcs 1 NORTEC WB burner assembled 1 2 Set-up flange 1 3 Asbestos flange pad 1 4 Lifting unit assembled 1 5 Fuel tube 2 6 Sieving fuel inlet 1 7 Rubber pad for fuel receiving nozzle 1 8 Fuel receiving nozzle 1 9 Fine cleaning fuel filter pin plug of a burner, outer part with a pump wire 1 11 Box lid of preliminary fuel heater 1 12 Fix screws with disks and nuts 4 13 User guide 1 21

22 19. Vendor details and copyright Exclusive NORTEC equipment distributor on the territory of Russia and CIS is LLC TK-Service INN Address: , Moscow, 2nd Magistralniy dead-end street, bld. 7a Phone: +7 (495) Web: All rights on using TK-Service. trademark on the Russian Federation territory belong to LLC Copyright rights on this User Guide belong to NORTEC trademark owner. Full or partial use of this Guide materials without the knowledge of the owner is prohibited and prosecuted by Russian law on copyright protection. Due to constant upgrade of NORTEC, equipment, its characteristics, construction details and appearance may be different from those described in this Guide. 22

23 Index Chapter Page 1 Multi-fuel burners NORTEC WB features 2 2 Multi-fuel burners NORTEC WB description and features 3 3 Diagram and function of NORTEC WB burners 4 4 Design, main elements and sizes of NORTEC WB burners 5 5 Burner head (electrodes and dispenser position) adjustment 6 6 Secondary air shutter adjustment 8 7 Burner power (primary air pressure) adjustment 8 8 Preliminary fuel heating temperature 9 9 Photocell, fault indicator and controller Electric wiring diagram Lifting unit Installation of the burner and fuel system Electrical connection of the burner Burner start-up Regulating burner work Main troubles and their solving methods Service and warranty Supply package Vendor details and copyright 22 Stamp of a seller and selling date: 201 г.