Service manual Gryp 2006 GB - Energlo Diesel Heaters Inc.
Contents
1. CAUTION In any case flames must never exit the front flame protection plate because the combustion would be incomplete and would waste fuel and send unburnt gas in the environment It is very important to regulate all air filters specially if the unit is working in a dusty or humid environment This allows the machine to work better and the actual air flow becomes equal to the nominal air value For cleaning air filter check chapter 6 10 Clean air filters according to the following chart Air Suction filter every 200 hours Air outlet filter every 500 hours Oil filter every 1000 hours Every 1000 hours replace all filters 10 5 TROUBLESHOOTING SWITCH ON THE UNIT DOES NOT START Check for correct voltage rating see data plate 10 nom value Chech for the correct voltage on the control panel Check fuse burn outs damages etc Check the burner control unit Check that the red lock out warning light is not alight Check that the overheat thermostat has not been activated Check that the remote thermostat is properly connected and adjusted Only on AP and PV models For operation without remote thermostat check that the thermostat socket cover is correctly inserted in the socket Only on AP and PV models Check that following parts are working Motor and capacitor Electrical cable and plug Internal cables2. 11 Check all connections Replace with a new one with identical ratings See charter 6 20 Replace the control unit Switch on O wait 10 seconds and switch on 1 Leave the unit to cool Position on 0 and then on 1 Check connections Turn the thermostat tap Check the metal jumper Reinsert and block Replace 1f not functioning correctly THE HEATER STARTS THE PREPURGE SEOUENCE STARTS BUT THEN THE HEATER STOPS WITHOUT Check the following parts are working e Ignition transformer HT cables Ignition electrode Check that the oil tank is full Check for air bubbles in the air filter Check that the nozzle is clean Check that the combustion head is clean Check that the electrovalve opens after the prepurge seguence Only on AP and PV models Check for the presence of external spurious lights sunlight lamps Check that oil flows to the nozzle 12 Replace 1f not functioning See chapter 6 16 Tighten the oil line fittings Check for damages craks in the oil hoses Check charter Cleaning the combustion head Clean the combustion head with compressed air or a brush dipped in oil Check the electrical tester See chapter 6 13 Look for and eliminate light reflectors due to sunrays lamps etc that could disturb the flame sensor Look for fires inside the machine Check the position of air and oil hoses on the combustion head Check that the o ri
3. all open GB version n 1 flat plate Ait openings 40 None all open GB version n 1 flat plate COMPRESSOR AIR SIZE PRESSURE 5 blades 190mm 15 Thickness 17mm 0 28 0 30 bar 5 blades 190mm 34 Thickness 17mm 0 28 0 29 bar 5 blades 210mm 34 Thickness 17mm 0 30 0 31 bar 5 blades 254mm 38 Thickness 215mm 0 31 0 32 bar DELAVAN 0 40 GPH cod 30609 4 DELAVAN 0 65 GPH cod 30609 7 DELAVAN 0 75 GPH cod 30609 8 DELAVAN 1 00 GPH cod 30609 11 SAFETY THERMOSTAT 265 C 265 C 265 C 315A ILSA Du Direct fired heaters with post ventilation 60 PV BURNER HEAD Ait openings all open Ait openings all open enlarged AIR LOCK n 1 L bracket 5 blades 254mm 34 4 blades 250mm 23 COMPRESSOR SIZE Thickness 21mm Thickness 21mm 31 AIR PRESSURE 0 31 0 32 bar 0 34 0 35 bar DELAVAN 1 00 GPH cod 30609 11 DELAVAN 1 50 GPH cod 30609 49 SAFETY THERMOSTAT 265 C 5A 8 WIRING DIAGRAMS Direct fired heaters GE WHITE Nis BLUE FC flame sensor FS fuse IN switch M motor TR ignition transformer IS safety thermostat CF flame control unit Indirect fired heaters and direct fired heaters with postventilation FC flame sensor FS fuse IN switch M motot EV solenoid valve E EI blus H brown F 5 HT brown irl FL Je
4. chamber R air regulation valve S exhaust flue EV solenoid valve General functioning system The rotating compressor driven by the motor compresses the air and sends it to the nozzle through a cut out solenoid valve The air creating vacuum sucks the fuel from the tank The mixture air fuel enters the combustion chamber and the spark ignites The motor fan generates the air flow necessary for the functioning of the heater which receives heat flowing alongthe surfaces of the heat exchanger the warm air is clean and by the exhaust gas are vented outside through the exhaust flue Detailed functioning system When the switch is on the 1 position the motor begins to rotate and drives the compressor and the fan The compressor takes in air from outside cleaning it with the filter and compresses it in the storage chamber the eccess air is discharged by the air valve and the remaining air is directed to the combustion head The air going to the nozzle passes through channels of different sizes creating a Venturi effect taking in the fuel filtered from the tank Inside the nozzle the air and fuel mix and exit atomized The mixture is ignited by a spark generated by the ignition system The photocell has the task to recognize the flame within 10 seconds and send a signal to the control card If the mixture air fuel does not ignite the photocell does not send a signal to the control card which blocks the unit lock out At this point it is impo
5. heaters If you have no pressure gauge available proceed as follows e Fill the tank completely e Switch the unit on and let it warm up 22 e Increase the air pressure as long as the flames start getting out of the front shield fig 36 e Decrease the pressure 1 4 turn back the adjusting screws as long as the flame do not get out of the front outlet e Check there are no flame exiting and the front shield is red or red orange e Otherwise decrease the pressure and re check See also chapter 3 1 6 12 CHECKING ADJUSTING VALVE THE PRESSURE The adjusting valve consists of e Screw e Nut e Spring e Ball fa 37 fig 39 Recommended maintenance To replace e Cleaning the ball seat e Disassemble the valve connector form the e Checking the spring elasticity integrity solenoid valve e Disassemble the two fittings form the falutly valve and fix them to the new one 6 13 CHECKING AND HEPLACING THE e Riconnect the hoses AIR SOLENOID VALVE only for indirect WARNING and post ventilation models The air shall enter the valve on side marked 1 and follow the arrow direction e Switch the unit on by main switch or remote thermostat e Riconnect the electrical connector e Check that during the pre ventilation time when the solenoid valve is closed 10 s the air 6 14 CHECKING CLEANING flows through the vent hole on the solenoid CONTROLLO ADJUSTING AND valve body REPLACING IGNITION ELECTRODE
6. hi THE Ex Uptianal a TR ignition transformer TS safety thermostat CF flame control unit TH room thermostat 33 ror Fal E black
7. CING THE FAN e Check the fan conditions and look for damages ot blocking causes To replace a damaged fan e Unscrews the fixing screw on the fan hub e Remove the faulty fan and replace it with a new Ill 17 one e Check that the fan can rotate freely with out e Connect an extension for the exhaust gas interference analysis to the flue collar on the heater PI HA AO AED e Insert the end of the suction pipe of the pump into the extension 6 5 EXHAUST GAS ANALYSIS only for indirect heaters OGA Ge AA eg L ri 1 Perform the exhaust gas analysis using the Shell Bacharach test to check the quality of combustion e Use the special test pump shown on picture 17 17 e While the heater is on pull and push the pump piston 10 times in sequence IMPORTANT 10 TIMES EXACTLY with slow movements using the complete piston stroke e Extract the test paper and check the colour comparing it with the reference scale to find the smoke number fig 19 Diesel heaters are factory set to give a 0 smoke number of the Shell Bacharach scale A smoke number 1 means the combustion is acceptable while a smoke number 2 means the combustion is too smoky In this case find out the causes of the problem and fix it see flow chart A smoky combustion can be due to gt Clogged combustion chamber due to bad installation blocked or badly designed exhaust pipe see operator s manual for guideines gt Operation wi
8. S e Extract the burner head fig 95 e Check that during the ignition time the solenoid is powered fiz 40 e Check that at ignition the solenoid is powered at the correct voltage e Check that the electrodes are clean 25 e If required clean them using a brush or similar and the blowing compressed ait e Check the the distance between electrode and the distance between electrodes and nozzle e Adjust the distances according to the diagram below fig 41 To check that the electrodes spatk regularly e Fix the burner head in its normal position e Disconnect and remove the fan from the motor shaft e Switch the unit on and start sequence the igntion e Visually check that there are sparks betweeen the electrodes WARNING ELECTRICAL SHOCK DANGER The ignition voltage between electrodes is 14 kV Follow electrical safety regulations during servicng and maintenance operations e Unplug the unit e Fix the fan properly and reassemble To replace the electrodes e Disconnect thge high voltage cables e Unscrews the electrode fiwing screw 24 fig 42 e Replace the electrodes and reconnect the cables e Receonnect the earthing cable to the burner head e Fix the burner head 6 15 CHECKING AND REPLACING HIGH VOLTAGE IGNITON CABLES e Chechk the cable connections e Check the conditions of cables e Disconnect the high voltage cables form electrodes and igntion transform
9. SPACE HEATERS WITH COMPRESSOR MAINTENANCE AND SERVICE MANUAL THE MAINTENANCE OPERATIONS DESCRIBED IN THIS MANUAL MUST ONLY BE CARRIED OUT BY QUALIFIED TECHNICIANS RESPECTING ALL SAFETY RULES USE ONLY ORIGINAL SPARE PARTS RECOMMENDED BY THE MANUFACTURER INDEX Functioning scheme of direct fired heaters Functioning scheme of indirect fired and post ventilated heaters Installing the unit Rotary compressor 4 1 Assembling seguence 4 2 Tuning 4 3 Cleaning the air filters 4 4 Troubleshooting Maintenance and service operations 6 1 Checking the supply voltage 6 2 Checking and replacing the power cord 6 3 Checking and replacing the motor 6 4 Checking and replacing the fan 6 5 Exhaust gas analysis 6 6 Cleaning the tank 6 7 Checking and replacing the fuel filter 6 8 Check and replace the fuel hose 6 9 Checking replacing and cleaning the fuel nozzle 6 10 Checking and cleaning the air compressor 6 11 Replacing and adjusting the air compressor 6 12 Checking the pressure adjusting valve 6 13 Checking and replacing the air solenoid valve 6 14 Checking cleaning adjusting and replacing ignition electrodes 6 15 Checking and replacing high voltage ignition cables 6 16 Checking and replacing the ignition transformer 6 17 Replacing the fuse 6 18 Checking cleaning and replacing the flame sensor 6 19 Checking and replacing the safety thermostat 6 20 Checking and replacing the flame control unit 6 21 Burner head old typ
10. arged by the air valve and the remaining air is drawn to the combustion head The air going to the nozzle drives through channels of different sizes creating a Venturi effect taking in the filtered fuel from the tank Inside the nozzle the air and fuel mix and exit atomized The mixture is ignited by the spark generated by the ignition system The photocell has the task to recognize the flame within 10 seconds and transmit a signal to the control unit If the mixture air fuel does not ignite the photocell does not send a signal to the control card which stop the unit lock out In this case it is important to discover why the ignition does not take place 1 e no fuel dirty nozzle etc Following this operation place the switch on the O position wait approximately 10 seconds for the control card to be released and repeat again ignition The motor fan produces both the airflow necessary for combustion and the air flow to be warmed flowing through the chamber and casing for cooling surfaces and heating the environment The front shield becoming incandescent acts as a catalyzer for the fuel products and traces of carbon monoxide 2 FUNCTIONING SCHEME OF INDIRECT AND POST VENTILATED HEATERS F1 po fg M electrical motor A ignition transformer C centrifugal compressor V fan C1 accumulation chamber P photocell F1 suction filter T combustion head F2 felt delivery filter E electrodes F3 tank filter U nozzle F4 fuel filter B combustion
11. ate screw I back grid 0 150 m 0 230 m 0 280 m 0 430 m 0 600 m sphere spring air regulating screw fixing nut fixing back grid screw filter plate felt outlet filter o5 mwNovuozzt fixing stator screw Stator 4 1 Assembling Careful maintenance must be carried out on the compressor The coupling in plastic sequence enters the graphite rotor with a gentle connection so there is no clearance Special attention is given when mounting the unit to garantee a perfect functioning system and avoid abrasion ot seizing The connection is then inserted on the shaft until the the rotor and the motor plate touch At this point the stator ring is mounted and regulates the distance with the rotor see illustration below Theoretically the smaller the distance the better the efficiency of the compressor compatible with the precision when mounting a good compressor has a distance between 0 2 mm to 0 5 mm f At this point of the assemblage it is important to check that the rotor is 0 1 mm back compated to the stator this is to avoid that the compressor cover blocks the rotor when functioning fig Z WLLL lll 4 2 Tuning If the rotation of the rotor is stiff levigat
12. ber gasket was interposed between nozzle and nozzle holder to provide tightness between the air and fuel lines fig 50 e The heater shall immediately lock out Different types of flame control units gt Detail of flame control unit for direct fired heaters 21 fig 23 On the nozzle stem the following part were fitted e 2 spacing washer e 1 spring e 1 side washer e 1 rubber seal If there are combustion problems the heater puffs or the fuel cannot be drawn to the nozzle check the integrity of the rubber seal that could be impaired due to the thermal stress or to rubber aging In this case the solution is to replace the rubber gasket and to oil it before inserting the nozzle 28 Indirect fired heaters AIR LOCK Ait openings 5 blades 210mm all closed 34 Ait openings 5 blades 25 AP ESL 254mm all open bracket 34 Ait openings 5 blades n 1 straight 254mm all closed bracket 38 7 SETTING CHARTS COMPRESSOR AIR SIZE PRESSURE Thickness 17mm 0 30 0 32 bar Thickness 21mm 0 32 0 34 bar Thickness 21mm 0 32 0 33 bat DELAVAN 0 40 GPH code 30609 4 DELAVAN 0 75 GPH code 30609 8 DELAVAN 1 00 GPH code 30609 11 SAFETY THERMOSTAT 265 C 265 C 5A Bux Direct fired heaters BURNER HEAD AIR LOCK Flat head n 2 blades on chamber Ait openings 20 None all open GB version n 1 flat plate Ait openings 28 None
13. e Setting charts Wiring diagrams 1 FUNCTIONING SCHEME OF DIRECT FIRED HEATERS D fa M electtic motor A ignition transformer C centrifugal compressor V fan C1 accumulation chamber P photocell F1 suction filter T combustion head F2 felt delivery filter E electrodes F3 tank filter U nozzle F4 fuel filter B combustion chamber R air regulation valve D flame protecting plate General functioning system The rotating compressor driven the motor draws compressed air to the nozzle positioned on the combustion head The air creating a vacuum effect sucks the fuel from the tank The mixture air fuel enters the combustion chamber and the spark ignites The fan produces the required airflow Detailed functioning system When the switch is on the 1 position the motor begins to rotate and activates the compressor and the fan mounted on the shaft The compressor takes in air from outside through the filter and then blows it to the storage chamber the excess air is disch
14. e Only use original e Remove the upper panel spare parts see specification chart e Remove the air and fuel hoses from the e Check the integrity of the O ring on the nozzle combustion head stem It must provide a perfect tightness between the air circuit and the fuel circuit e Reassemble the nozzle e Reassemble the burher and the panels WARNING Make sure not to exchange the connections of ait and oil hose with each other on the burner head 19 inlet 1 ait inlet 2 fuel fig 26 6 10 CHECKING AND CLEANING THE COMPRESSOR The basic maintenance Operations are Cleaning the filters with following frequencies e every 200 hours for the inlet filter e every 500 hours for the outlet filter e every 1000 replace all filters More frequent cleaning is required if units are operated in dusty or dirty environments Cleaning the suction filter e Remove the rear plastic guard e Extract the filter and clean it with compressed air 20 fig 27 Cleaning the outlet filter e Remove the plastic rear guard e Remove the 3 screws fixing the filter plate fig 28 e Extract the felt filter and blow comprresed air On it fig 29 Check the integrity of the sealing gasket located below the filter plate Jig 30 6 11 REPLACING AND ADJUSTING THE AIR COMPRESSOR To disassemble the air compressor proceed as follows e Remove the plastic guard e Extract the suction fi
15. e plastic protection and remove the protection 14 10 To replace power cord e Only use HO7RN power cords with waterproof plug e Disconnect live neutral and earth cables form terminals e Remove the faulty cable e ix the replacement cable to the cample clamp Inserire il cavo di ricambio nel passacavo inner lenght 5 cm approx Fix the cable clamp in its seat Connect live and neutral cables Check operation Reassemble control panel 6 3 CHECKING AND REPLACING THE MOTOR e Extract the control panel e Check supply voltage using a multimeter I 11 I 13 Check capacitor for possible faults cracks etc e Unscrew motor from motor bracket To replace motor e Unplug the heater e Disconnect motor cables from terminal boards e Remove upper shell unscrewing 6 M5 screws Ii 14 e Replace motor and fix it to motor bracket Fix motor bracket to support Connect motor cables gt on terminal board follwing wiring diagram Il 12 i e Check operation e Reassemble all parts e Remove fan see par 6 4 To replace capacitor e Disassemble compressor see par 6 11 e Unscrew capacitor cover e Unscrew motor bracket form lower support 16 Dl 75 m Ill 16 e Extract the capacitor from its casing e Insert the special paper in the pump slot e Disconnect terminals e Replace the capacitor with one of the same capacity e Connect check operation and reassemble 6 4 CHECKING AND REPLA
16. e the surface of the rotor with an abrasive plate n 600 as shown in the illustration below g J e lt gt KA According to the capacity of the machine there are two different values that relate to A 15 20 28 A 17mm 25 40 60 kW A 21mm Four blades must be inserted very carefully with the edge pointing towards the center of the rotor and then it must be closed with the compressor cover It is necessary to check the machine has been assembled correctly by letting the motor run power the machine until the flame control card stops put the switch on the O position for about 10 seconds and then reposition the switch on 1 repeat this operation 2 or 3 times After this operation it is possible to replace if it is dirty the felt filter mount the filter plate holder the suction filter and the air regulator formed by a sphere a spring and a nut The first operation to be followed is the pressure regulation this can be done by expelling part of the air moved by the compressor This operation consists of inserting in the hole at the back of the unit see illustration a manometer 0 0 6 bar and tuning the regulation screw until you obtain the pressure indicated on the chart in this manual at chapter 7 4 3 Cleaning the air filter NON Om Il YV vl XY V
17. er located on the electrical board e Coennct the new cable and check operation WARNING Do not touch the igniton cable near their when the ignition system is powered as you could be injured by electrical discharges connectors 6 16 CHECKING AND REPLACING THE IGNITION TRANSFORMER e Disconnect the high voltage cables e Disconnect the transformer supply cable from the flame control unit fig 43 e Replace the transformer and reconnect all cables 6 17 REPLACING THE FUSE Open the electrical board e Extract the fuse from the fuseholder jig 44 e Check the fuse e If the fuse is burnet replace it with one of the same amp rating 6 18 CHECKING CLEANING AND REPLACING THE FLAME SENSOR e Extract the flame sensor from its seat rotate 34 turn to unlock the plastic casing 25 fig 45 e Extract the flame sensor from its casing pushing gently the two cables Clean the glass surface using a cloth and ethylic alcohol to remove soot ot dirt deposits jig 46 You can check the flame sensor using a multimeter Connect the tester terminals to the flame sensor cables and proceed as follows Set the multimeter for ohmic measurements Expose the flame sensor to a bright light You should read a decrease in the resistance reading as long as the light increases To replace the flame sensor Disconnect the flame sensor cables from the flame control unit Replace the faulty sensor Re co
18. ification chart Wrong fuel pressure too high see specification chart Insufficient ventilation due to motor fault Insufficient ventilation due to fan failure Blockage of airways due to dirt or foreign objects Exhaust pipe partially obstructed Combustion chamber clogged by soot see charter 3 10 Room temperature too high 6 MAINTENANCE AND SERVICE OPERATIONS THE MAINTENANCE OPERATIONS DESCRIBED IN THIS MANUAL MUST BE CARRIED OUT BY QUALIFIED PERSONNEL ONLY IN COMPLIANCE WITH THE ELECTRICAL SAFETY STANDARDS IN FORCE ONLY USE ORIGINAL OR RECOMMENDED SPARE PARTS 6 1 CHECKING THE SUPPLY VOLTAGE The supply voltage must match with the rated voltage indicated on the data plate 230V The actual input voltage must be within 220V and 240V for good and safe operation e Measure the mains voltage inserting the multimeter tips into the electrical socket and compare it with the rated voltage written on the data plate If no voltage is found e Check the electrical system fuse s and the main distribution board e Check the electrical socket Note Only carry out maintenance repairs on the heater and not on the electrical system for which servicing by authorized personnel is required 6 2 CHECKING AND REPLACING THE POWER CORD e Check conditions of cable and plug and identify any fault e Unscrew the fixing screw on the control panel and extract the electrical board e Unscrew the fixing screw on th
19. inuity between the 26 thermostat terminals at normal room temperature Make sute there was no overheating before replacing the thermostat 6 20 CHECKING AND REPLACING THE FLAME CONTROL UNIT To check the correct operation of the flame control unit you can carry out the following tests Continuity test Unplug the heater then Turn on off switch to I gt Set the room thermostat on high temperature contact closed gt Check electricla continuity between the terminals marked by yellow arrows with connected wires fig 45 Power supply to load Plug the heater gt Turn on off switch to I gt Set the room thermostat temperature contact closed gt Check supply voltage to the flame control unit on high jig 49 AA fig 51 gt Check voltage between terminals of transformer motot solenoid valve if Detail of flame control unit for indirect fired applicable heaters The supply voltage to loads shal be the same as the mains voltage If not replace the flame control unit Lock out test e Turn the heater on and wait for teh end of the ignition cycle e Disconnect the wires marked with a yellow arrow sensor cable see fig 50 fig 52 6 21 BURNER HEAD OLD TYPE This chapter is intended to help technicians who have to setvice repair a heater with the previously used type of burner head In the old desing the fuel nozzle had not an O ring gasket directly fitted on the stem but a rub
20. lter e Remove the filter plate unscrewing the 3 M5 screws e Remove the compressor cover unscrewing the 4 M5 screws e Remove the stator ring unscrewing the two M4 screws To reassemble the air compressor e Insert the plastic joint into the central slot of the rotor and fix it to the motor shaft e Position the stator ting so that the minimum distance between stator and rotor is 0 2 0 5mm You can use special spacing plates to do this or simply a folded sheet of paper WARNING Do not use abrasive paper on the inner surface of the stator ring as it would damage the surface finish and cause operational problems production of carbon dust and blocking of outlet filter 21 fig 31 Fix the stator ring by two M4 screws washers fig 32 EA fig 33 Insert the four blades correctly into their slots Fix the filter plate and fix it by 4 M5 screws and KR 9 i E mme mt FIX IN THE CORRECT POSITION f 34 e Insert the outlet filter e Fix the filter plate by 3 M5 screws e Insert the suction filter Fix the plastic rear guard Adjusting the air pressure e Unscrew the threaded cap on the plastic guard e Connect a pressure gauge scale 0 0 6 bar to the pressure measuring point on the rear guard Using a size 13 key and a screwdriver adjust the pressure according to the setting chart included in this manual Practical procedure for direct fired
21. ng on the nozzle is not damaged THE HEATER START IGNITES AND THEN STOPS THE HEATER STARTS THE FLAME IGNITES BUT COMBUSTION IS NOT GOOD Check that the photocell is not damaged clean and fixed to the combustion head Check that the nozzle is clean Wrong air pressure of the compressor Check the nozzle size Check the nozzle is clean Check that the oil filter is clean Check that there are no air bubbles in the fuel line Wrong air pressure of the compressor Oil is not correct dirty polluted or contains water Pulsating combustion 13 Clean the photocell with alcohol Replace if necessary See chapter 6 9 Replace oil nozzle Measure and regulate pressure Look for correct nozzle size on the See chaper6 9 Replace oil nozzle See chapter 6 7 Tighten fittings Replace the faulty pipes hoses Measure and regulate pressure Empty tank and refill with correct fuel Check and clean oil nozzle Check if o ring on nozzle is damaged Check that the nozzle holder is not damaged THE HEATER STOPS SUDDENLY Photocell activated Overheat thermostatincorrectly activated Excessive overheating of combustion chamber overheat thermostat activated 14 Dirty photocell clean with alcohol No flame caused by e Dirty nozzle e Nooil Wrong location of overheat thermostat after incorrect servicing repairs etc Damaged electrical connection cable Wrong nozzle too large see spec
22. nnect following the wiring diagram reassemble and check operation 6 19 CHECKING AND REPLACING THE SAFETY THERMOSTAT e Remove the heater cover e Check the thermostat is fixed properly To replace the thermostat e Disconnect the thermostat cables e Replace the thermostat e Reconnect and reassemble fig 47 Operation of safety thermostat The safety thermostat functions when for some reason the heater overheats If this occurs you have to find out what has cuased the overheating and fix the problem A unit overheats when 1 an amount of heat higher than the one required to warm the rated airflow is produced viene sviluppata una quantita di calore superiore a quella richiesta per riscaldare la portata di aria nominale 2 the actual airflow is lower than the rated airflow The case 1 can occur if the air pressure is too high in this case you could also see the flames coming out of the front outlet The case 2 can occur anytime the ventilation is insufficient due to an improper use of the heater ex inlet or outlet partially or completely blocked Of on tate cases due to a faulty component ex low motor rpm damaged or locked fan See the specific chapters of the manual for the solution of these problems If the safety thermostat trips under normal operational conditions then it could be faulty and should be replaced A simple practical way to check this is to test the electrical cont
23. rtant to discover why the ignition does not take place i e no fuel dirty nozzle etc Following this operation place the switch on the O position wait approximately 10 seconds for the control unit to be reset and repeat ignition The motorfan produces the airflow necessary fro combustion and the air flow to be warmed flowing along the chamber and heat exchanger The front shield becoming incandescent acts as a catalyzer for the fuel products and traces of carbon monoxide The fuel is filtered when filling the tank 3 INSTALLING THE UNIT Safety precautions For safety reasons it is not advisable to leave any type of inflamable substance within the space indicated below m Ji2 3 side of the unit 2 mt ait intake 2 mt above the unit 2 mt hot ait outlet 2 mt WARNING direct fired heaters Do not connect ducts or extensions to the air inlet or outlet Ventilation To obtain a good ventilation in any environment it is necessary to have an reguirements opening at the same level of the floor for the air to enter and one higher up for it to exit the free surface of the opening must be 2 0 01m i KW heating power The minimum opening for ventilating must be as follows 15 kW 23 kW 28 kW 43 kW 60 kW 4 ROTARY COMPRESSOR Exploded view A coupling B rotor C blade D compressor cover E fixing screw for compressor cover F gasket G suction filter H fixing filter pl
24. thout exhaust extension Dirty combustion head fuel circuit or nozzle see chapters 6 7 6 5 6 9 Lack of combustion ait due to incotrect installation too close to a wall ot in a small room without free openings 6 6 CLEANING THE TANK To clean the trank e Lift the heater at about 1 m using proper lifting means e Puta container below the tank e Unscrew the lower drian cap to empty the tank completely 18 fig 20 To clean the filler filter remove the tank cap and extract the inner filter Clean wash the filter and reinsert 1t fig 21 6 7 CHECKING AND REPLACING THE FUEL FILTER fig 22 e Unscrew the right side panel e Check the filter cartridge is clean clean or replace it if required To replace the complete filter e Disconnect the hoses by pulling them out of the filter e Reassemble the filter 6 8 CHECKING AND REPLACING THE FUEL HOSE Check the the integrity of the fuel hose There shall be no cracks or damages to prevent improper ait suction and bad combustion Check the suction fitting is correctly fitted on the Je 24 hose end and that the suction end is correctly positioned and free to allow the compressor to e Extract the burner head by rotating it clockwise draw the correct fuel flow to unlock it e Unscrew the nozzle e Clean the nozzle using compressed air fig 23 6 9 CHECKING REPLACING AND fig 25 CLEANING THE NOZZLE e If require replace the nozzl
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