Installation, user and maintenance manual FPDF file
Contents
1. F1 21 F131 F141 F151 F161 F181 Burner Pressure mbar 36 5 365 365 35 5 35 5 33 3 mmH O 372 372 372 362 362 339 CO in flue 96 10 1 10 9 10 4 10 9 CO in flue ppm 0 30 Table 7 HONEYWELL VK 4125A Figure 14 User Installation and Service Manual for F1 Gas Unit Heaters SIT 830 TANDEM VALVOLA BM 762 Burner pressure adjustment screw by BM 762 the protection must be removed Inlet gas pressure check tap Burner pressure check CONVERSION TO ANOTHER TYPE OF GAS WARNING Qualified engineers must carry out this operation Wrong and careless assembly of the gas circuit may cause dangerous gas leakage Use adequate seals for all connections If the type of gas on the identification label does not correspond to the one that will be used the unit must be converted and adapted to the type of gas you wish to use For this operation proceed as follows A Cut off power and gas supply B Take off the hexagonal ring nut which clamp the gas pipe to the nozzle support see figure 15 Pay the attention to the internal round gasket don t lose or damage it 20 _ User Installation and Service Manual for F1 Gas Unit Heaters Figure 15 Figure 16 Loosen without removing 4 screws for fastening the gas supply pipe to the gas valve figure 16 D Shove off the gas pipe and take off the nozzle If necessary use the screwdriver as to lever it2. ambient thermostat RL 1 2 3 programming relay Figure 21 WIRING DIAGRAM FOR MULTIPLE HEATERS INSTALLATION WITH ONE PROGRAMMER AND ONE ROOM THERMOSTATS MULTIPLE RELAY SOLUTION 24 2 lt User Installation and Service Manual for F1 Gas Unit Heaters Generatore Generatore Generatore P Programmer TA ambient thermostat RL programming relay Figure 22 WIRING DIAGRAM FOR MULTIPLE HEATERS INSTALLATION WITH ONE PROGRAMMER AND ONE ROOM THERMOSTATS ONE RELAY SOLUTION User Installation and Service Manual for F1 Gas Unit Heaters T P 25 26 User Installation and Service Manual for F1 Gas Unit Heaters SECTION 4 USE AND OPERATION START AND STOP OF THE UNIT WARNING Qualified service engineer must fulfil the first start up of the appliance Before turning on the heater a qualified service engineer must check that electric and gas supply ratings are the same as those given in the data plate that the setting is compatible to the heater s power that the exhaust duct operates correctly that the gas supply pressure is within rating limits that combustion air feed and exhaust occur correctly according to the existing standards Winter W IN lt Set the room thermostat to the highest temperature Check that the gas cock is open Supply the u
3. 12412 N D 848 15415 N D 1415 F131 17 14 11411 10 10 N D 545 747 N D 1414 1 41 15 11 10 10 8 8 N D N P 4 4 N D 1 12 F151 25 23 14 14 N P 15 15 N P 8 8 15 15 1 15 F161 20 18 11 11 N P 12 12 N P 6 6 15 15 1 14 F181 8 6 545 N P 1010 N P n r 14414 146 Table 4 N P INSTALLATION NOT POSSIBLE N D INSTALLATION NOT AVAILABLE NOTE When Your installation does not coincide with values indicated by table 4 for example installation type with air pipe 10m length and flue pipe 16m length must be checked the total amount of the flue system pressure loss It is to be within the maximum loss allowed for the unit see example below CALCULUS EXAMPLE F41 unit with following air flue system is to be installed 8 meters of flue pipe 80 2elbows 90 80 on the flue pipe 8 meters of air pipe 80 Piping calculus is to be done watching out the maximum allowed pressure drop which is 30Pa see table 2 Quantity Pressure drop Flue pipe 80 8 x 2 0 Pa 16 0 Pa 90 Elbow 2 X 41 Pa 8 4 Pa Air pipe O 80 8 x 1 0 Pa 8 0 Total pressure drop 324 Pa The total pressure drop of the system is BIGGER than allowed pressure drop 32 4 Pa HIGHER THAN 30 Pa therefore the installation is NOT POSSIBLE This flue system will be possible only if one of the following actions is taken reduce the flue air pipe length Increase the pipe diameter by using the pipe 2100 14 eS User Installation and Servic
4. Place the ambient The thermostat AND thermostat on NAE thermostat on t requires heating N maximum heating temperature YES Turn on the thermostat Replace the defective A thermostat then check flue fan again Troubleshoot for A overheating excessive NO gas supply fan failure Y etc Replace the YES Does the defective Anyunit Replace the combustion thermostat then overheating mE press blower starts switch check fan again A x NO A YES NO YES Check installation Check for Check the conditions YES i Y correct Check for correct NO pressure switch 1 Pipelength NO ambient YES ENS for correct NO 2 Pipe clogging Is the temp limit thermostat lt combustion thermostat aDeratioa operation 3 Pressure switch blower live operation Is Is th p tact N Pressure switch silicone pipe the contact locked out in obstructed If necessary calibrate the pressure switch N A position open Replace the combustion blower capacitor If this action does not resolve the problem replace the flue fan gt Continues on page 27 32 User Installation and Service Manual for F1 Gas Unit Heaters continued Replace the Ignition electrodes Check the ignition dectrodesand Does the electrode related cable Is the electrode E l sparking Inthe burner E
5. User Installation and Service Manual for F1 Gas Unit Heaters M Note When horizontal pipes with lengths above 1 metre are installed the flue pipe must be mounted with a slope of 2 to 3 cm each 1 metre length see fig 5 to prevent entering the condense drops into the unit In addition to install correctly the flue exhaust and the air intake terminals follow the details given in figure 8 2 3 CM PER METER Figure 5 SLOPE OF THE HORIZONTAL FLUE PIPE Note When vertical pipes with length above 3 metres are installed to prevent that condense drops enter the unit on base of the vertically mounted flue pipe a T shaped piece MUST be fitted in order to collect the condense TOP VIEW SIDE VIEW Figure 6 Figure 7 INSTALLATION TYPE B23 WITH WALL TERMINAL INSTALLATION TYPE B23 WITH ROOF TERMINAL 12 9595 User Installation and Service Manual for F1 Gas Unit Heaters Flue flow weight Max Allowed Mod Flue Temperature C kg h Pressure loss Pa F1 21 195 38 2 19 F1 31 197 51 0 25 F1 41 205 61 6 30 F1 51 195 80 0 60 F1 61 198 101 5 80 F1 81 195 127 7 85 Table 2 TECHNICAL DATA FOR PIPES SUPPLIED ON REQUEST BY MANUFACTURER Component s pressure loss 80 Component s pressure loss 100 Mod Pipe Pa m Elbow 90 Pa Coaxial Pipe Pa m Elb
6. bigger than 80mm for example when the installation requires using the pipe of the larger diameter caused by the longer ducts With this typology for the calculus of the flue air inlet duct refer to the duct manufacturers data and furthermore to the flue composition flue flow and its temperature see table 2 Use only approved ducts for the installation of the units Upon request manufacturer can supply approved rigid pipes coaxial pipes and terminals To determine a correct size of the flue system its total pressure drop has to be calculated The allowed pressure drop in the pipe system depends on the model of the unit see table 2 Table shows the maximum allowed pressure drop for each unit diameters 280 and 100 it shows the losses of the exhaust and air intake flues regarding the coaxial ducts supplied by manufacturer External terminals pressure losses are negligible since it is very low Check the total inlet outlet pipes pressure losses regarding maximum values given by table 2 On the next page follows the example of pressure loss calculation and respective duct project It must be checked that the total amount of the flue system pressure losses are within the minimum and the maximum losses allowed for the unit see table 2 Table 4 gives the lengths of the air supply and flue exhaust ducts for different types of installation These values are APPROXIMATE for the types of installation shown on the figures 6 7 8 9 10 and 11
7. fuse of the flame control unit or the control unit itself d Pressure switch out of setting replace or adjust it User Installation and Service Manual for F1 Gas Unit Heaters 3 TROUBLESHOOTING FLOW CHART The heater does not Main switch ee start neither for heating ON nor for ventilation y YES Check the fuse Is Replace the Consult your it burnt out fuse installer e _ _ _ _ NO NO Y Open the gas supply Check for Electric supply YES Phase reaches NO Exchange the live Main switch f P gt correct electric F p is 230 240 V P the correct HP wire with the OFF supply and phase 50 Hz terminal neutral wire T YES ed Y With unit on and off check for correct Correct pressure using proper Is it correct as in NO the installation pressure reducers as regards manual L P G units trn to the gas T supplier e gt gas pressure YES The Summer Switch the Winter switch is NO gt summer winter in winter switch to winter sition position T YES Is the unit equipped NO with a timer thermostat YES Y NO Place thi
8. governor Disconnect the manometer and close the gas tap by tightening adjustment screw Two or three times turn on and turn off appliance to verify the correct and stabile adjustment If necessary it s possible to check the inlet pressure from the gas tap B WARNING e After setting the gas pressure stop and start the unit and check that burner pressure has stabilised If necessary perform a new adjustment e After completing the gas pressure adjustment seal the valve setting screw e Check the gas leakage using the water soap foam or other suitable method BURNER PRESSURE SETTING TABLE MODELS SERIES F1 SUPPLIED WITH NATURAL GAS G20 GAS SUPPLY PRESSURE 20 mbar F121 F131 F141 F151 F161 F181 Burner Pressure mbar 10 5 9 3 9 6 8 0 8 3 7 0 mmH O 107 95 98 81 85 71 CO in flue 96 8 6 9 4 8 8 9 2 CO in flue ppm 0 30 Table 5 BURNER PRESSURE SETTING TABLE FOR UNITS SUPPLIED WITH LPG G30 BUTANE OR COMMERCIAL MIX SUPPLY PRESSURE 30 mbar F1 21 F131 F141 F151 F161 F1 81 Burner Pressure mbar 28 5 28 5 28 5 27 8 28 0 26 5 mmH 0 290 290 290 283 285 270 CO in flue 96 10 2 11 0 10 5 11 0 CO in flue ppm 0 30 Table 6 18 User Installation and Service Manual for F1 Gas Unit Heaters BURNER PRESSURE SETTING TABLE FOR UNITS SUPPLIED WITH LPG G31 PROPANE OR COMMERCIAL MIX SUPPLY PRESSURE 37 mbar
9. switch RP7 ignition electrode Z9 room thermostat RP8 flame sensor M1 temperature limit thermostat Q1 gas valve M4 flame control unit L El Supply phase L1 lockout warning lamp N El Supply neutral P1 reset button GND ground BSRB Blower Speed regulation Board 22 eS User Installation and Service Manual for F1 Gas Unit Heaters INSTALLATION WIRING DIAGRAM zowy js Szory Zielony Bialy Czarny Pink Roze R Grey Gri CV CV gt c x gt ea z lt x z e LT c x o u x e o o ul pm z gt 2 gt 230V S0Hz gt LK Q oo Le emen al aoe O 0 e N Inverter only for F1 51 61 81 Figure 19 INSTALLATION WIRING DIAGRAM OF F1 SERIES HEATERS SEE LEGEND FOR FIGURE 18 User Installation and Service Manual for F1 Gas Unit Heaters _ 23 WIRING DIAGRAM FOR MULTIPLE UNIT INSTALLATIONS Generatore Generatore Generatore P Programmer TA ambient thermostat RL 1 2 3 programming command relay Figure 20 WIRING DIAGRAM FOR MULTIPLE HEATERS INSTALLATION WITH ONE PROGRAMMER AND MORE ROOM THERMOSTATS RL2 Generatore Generatore Generatore 29
10. time 40 seconds Power supply 230V 50 Hz Flame control box model BRAHMA CM32PR Ignition transformer BRAHMA TC2LTCAF EICHHOFF 4718 2 isse A flame control box B pressure switch C fuse 6 3A 5x20 D speed regulation board E ignition transformer Figure 1 User Installation and Service Manual for F1 Gas Unit Heaters TECHNICAL CHARACTERISTICS MODEL UNIT F1 21 F131 F141 F151 F161 F181 Appliance Category Il23 Appliance type C13 Cas B23 Nominal heat input 5 kW 23 08 30 77 37 15 48 35 61 32 77 14 BTU 78804 105046 126841 165072 209357 263369 Nominal heat output kW 21 28 33 8 44 55 8 70 2 BTU 71698 95597 115407 150224 190520 239668 Efficiency 5 91 91 91 91 91 91 Nominal air flow 1 mh 2120 2860 4180 5100 5200 7800 Temperature rate K 31 1 30 7 29 5 31 31 8 26 7 Gas Consumption 2 Natural Gas mh 2 43 3 25 3 93 5 11 6 49 8 16 LPG kg h 1 80 2 42 2 93 3 81 4 84 6 09 LPG G31 kg h 1 78 2 38 2 87 3 74 4 75 5 97 Inlet gas pressure Natural Gas 20 LPG G30 mbar 30 LPG G31 37 Diameter gas inlet 3 4F Pipe Diameter air mm 80 flue mm 80 Voltage 230V 50Hz Wattage W 250 300 350 410 640 900 Operating temperature 0 4359 Fuse A 6 3 Throw m 14 16 20 22 25 29 residual air speed
11. 0 355 F181 468 435 340 600 720 90 3 4 495 80 80 410 RIGHT SIDE VIEW FRONT VIEW Se segs TEBHIEEHEEE HEISE S dar s Flue Exhaust F Air Supply D G Power Line Gas Connection B maximum 4 4 gt W gt REAR VIEW REAR VIEW F1 21 31 36 41 51 F1 81 61 Figure 2 8 User Installation and Service Manual for F1 Gas Unit Heaters SECTION 3 INSTALLATION GENERAL RULES WARNING A qualified service engineer following the manufacturer s instructions must carry out the installation Qualified engineer means those having specific technical competence according to national international standards In any case all necessary information could be obtained directly by Qualified Engineer or Manufacturer incorrect installation can cause damages to people animals and property In case of erroneous installation the manufacturer cannot be held responsible for such damages The units must be installed according to the national and international norms regarding this type of appliances and applications Install the gas supply lines the electric power lines and a suitable support bracket for the unit according the approved installation project Installat
12. ROBUR caring for the environment Installation use and maintenance manual Heaters Line F1 Series Gas fired unit heaters for heating medium large areas Natural gas LPG fired F1 GAS FIRED UNIT HEATERS TABLE OF CONTENTS SECTION 1 GENERAL WARNINGS J aan J 3 SECTION 2 GENERALITY AND CHARACTERISTIC cerent 5 OPEBRATION OFPTEE UNLT ode re ep taie e i e ette a i eR cect e eec 5 CONSTRUCTIVE CHARACTERISTICS ul S ar A ara eai Ta 5 SAFETY AND CONTROL DEVICES I I n a 6 TECHNICAL CHARACTERISTICS 7 DIMENSIONS OF THE UNITS I nn nn n 8 SECTION 3 INSTALLATION J J J U o rrr paratu J J 9 GENERAL RULES u cite tie eee ets bat etat tatit lee tb 9 SIZE AND INSTALLATION OF THE AIR INLET FLUE EXHAUST 11 SUPPORT BRACKET INSTALLATION u u uu u uu i AD a Miau Aaa 17 INSTALLATION OF REMOTE CONTROL BOX a 17 BURNER PRESSURE ADJUSTMENTT I n sss eser sanas 18 CONVERSION TO ANO
13. THER OF QAS 20 OPERATING WIRING DIAGRAM I I n n 22 INSTALLATION WIRING DIAGRAVM l sisse asini saga dass a 23 WIRING DIAGRAM FOR MULTIPLE UNIT INSTALLATIONS 24 SECTION 4 USE AND OPERATION U J Q 27 START AND STOP OF THE UNIT suu ios ett PER er celis gei e tn eere adus 27 SECTION 5 MAINTENANCE AND SERVICING 29 niteat et tette atit ets rated 29 OPERBATING3FAIEURES 2 452 1 tnit teen Eae ette at dete tanien rie Bia ha dete tasted 30 TYPES OF FAILURES AND SERVICING I a a 30 CASE N 1 The unit locks out during the first ignition phase ssssssseseeneeeeennenennenennenennennns 30 CASE 2 The unit locks out during operation a 30 CASE N 3 The temperature limit thermostat M1 stops the burner 31 CASE N 4 The burner goes out and does not re ignite even if room temperature requires it 31 CASE N5 The exhaust fan will not start enne n
14. afety of the unit To ensure unit efficiency and correct operation it is essential that qualified service engineers carry out annual maintenance following the manufacturer s instructions Should the unit be sold or transferred to another owner please ensure that the manual remains with the unit for use by the new owner and or installer Before turning the heater on a qualified service engineer must check e that electric and gas supply ratings are the same as those given in the data plate e that the exhaust duct operates correctly e that combustion air feed and exhaust occur correctly according to the existing standards e the internal and external tightness of the pass supply line e fuel flow control according to the heater s power requirements e that the heater is supplied with the type of fuel for which it is pre set e that the gas supply pressure is within rating limits e that the gas supply system is suitable to the heater and all safety and check over devices prescribed by existing standards are duly installed Do not use gas pipes to ground the appliance or any other electrical appliance Avoid unnecessary supply when unit is not in use and always close the main gas cock If the appliance is turned off for a longer time period close the main gas supply cock and cut off the electrical supply WARNING If you smell gas do not operate electric switches telephones or any other object or device which may cause sp
15. arks open immediately doors and windows to create a cross current of air to purify the room shut off the gas supply call for a qualified service engineer User Installation and Service Manual for F1 Gas Unit Heaters A 3 User Installation and Service Manual for F1 Gas Unit Heaters SECTION 2 GENERALITY AND CHARACTERISTIC OPERATION OF THE UNIT The F1 gas fired air heater is an independent heater appliance with airtight combustion circuit and forced air draft It s designed for an indoor installation inside the area to be heated It s adjustable for the use of Natural Gas G20 or LPG G30 G31 The combustion circuit is airtight regarding heated room and conforms the standard EN 1020 for the C type appliances the air inlet of the combustion air and the flue exhaust are outdoors and are ensured through the operation of combustion blower The appliance is certified either for the B type installations where is allowed combustion air inlet from indoors from the area to be heated Aroom thermostat not supplied with the unit controls the heater operation When the thermostat is turned on the flame control box after the pre purge period about 40 seconds ignites the burner The flame sensor controls the ignition of the burner If the flame does not appear the flame control unit locks out the heater The combustion products pass through the heat exchangers the air flow given by the axial
16. d at suitable position The wiring numeration between 1 7 must be respected The wiring n 4 and 8 are not connected free WARNING Qualified personnel must carry out this operation Before performing this operation cut off the electrical supply The section of every cable core to be used for this operation must be1 mm To install the remote control box proceed as follows Isolate the unit from power supply Fix the control box in the desired position maximum distance 20 metres from the gas unit heaters using expansion bolts Mount the supplied cable of cable with 8 x 1 mm section maximum length 20 meters In the case you need longer cable than the supplied one please contact your local dealer or Robur SpA Connect the control box to the cable Connect the cables of the terminal board inside the unit following the indications given in the installation diagram see figure 19 Connect the power supply Start the unit Check that when the gas supply is cut off the lock out warning light C on the control box lights up see figure 23 This operation takes about 40 seconds Press reset button C and check that the unit restarts and the light goes out Press the button A 3 in order to control the correct operation of the summer winter function the burner remains off while the fans are running User Installation and Service Manual for F1 Gas Unit Heaters 17 Note The contr
17. e Manual for F1 Gas Unit Heaters TOP VIEW Figure 8 C13 INSTALLATION WITH SEPARATE WALL TERMINAL LE RI BUR Figure 10 C33 INSTALLATION ROOF COAXIAL TERMINAL User Installation and Service Manual for F1 Gas Unit Heaters TOP VIEW A F1 Unit Heater D Pipe 80 E Pipe 80 F Coaxial Pipe Cod P3370 Figure 9 C13 INSTALLATION WITH COAXIAL WALL TERMINAL SIDE VIEW Figure 11 C53 INSTALLATION WITH ROOF FLUE TERMINAL AND WALL AIR SUPPLY PIPE 15 RECOMMENDED ALLOWED FORBIDDEN 1 1 FLUE 2 AIR SUPPLY Figure 12 WALL TERMINAL POSITION Note If the total length of the flue system exceeds 8 metres it is advisable to contact the Authorised Engineer or Manufacturer 16 User Installation and Service Manual for F1 Gas Unit Heaters SUPPORT BRACKET INSTALLATION Manufacturer supplies an optional easy to install bracket specifically designed for each heater Should you wish not to use these accessories please refer to the diagram below Fasten the unit to the support brackets using four M10 bolts FRONT VIEW SIDE VIEW Figure 13 SUPPORT BRACKETS INSTALLATION OF REMOTE CONTROL BOX F1 Series appliances are supplied with remote control box equipped with summer winter switch lockout lamp and the reset button see figure 23 The remote control must be wired according the norms and installe
18. ened Z IIIT min 0 2m A A min 0 4 m p v 2 5 3 5m Ly A LENGTH OF g THE UNIT lt lt Z Figure 3 CLEARANCES TO BE RESPECTED 10 9595 User Installation and Service Manual for F1 Gas Unit Heaters Figure 4 POSITION OF THE UNITS SIZE AND INSTALLATION OF THE AIR INLET FLUE EXHAUST F1 Series gas fired unit heaters can be installed as following Bz type installation combustion air taken directly from the room and flue exhaust gases to the outside This exhaust flue duct can be either horizontal or vertical This type of installation is not sealed regarding the heated room see figures 6 7 Ca type installation room sealed combustion circuit Appliance with inlet air supply and outlet of exhaust gases with either concentric or separate ducts horizontal for C43 see figures 8 9 or vertical ones for see figure 10 type installation room sealed combustion circuit appliance with inlet air supply and outlet of exhaust gases by using separated ducts and terminals n different walls for example the air inlet duct from the wall behind the appliance and the flue exhaust duct on the roof see figure 11 Css type installation allows installing the certified air inlet flue exhaust ducts elbows and terminals purchased on the market Moreover it permits to use the pipe diameters
19. ennen nennen nennen nennen nnns 31 CASE N 6 The exhaust fan starts but the unit does not ignite eessssseeeenennnene 31 TROUBLESHOOTING FLOW CHART l L n 32 User Installation and Service Manual for F1 Gas Unit Heaters 1 User Installation and Service Manual for F1 Gas Unit Heaters SECTION 1 GENERAL WARNINGS This manual is an integral and essential part of the product and must be given to the user Qualified service engineers are those having specific technical experience in the field of heating installation unit for domestic and industrial use In the case of any doubt contact your local agent or Manufacturer This unit must be exclusively used for the purpose it was intended Any other use is to be considered improper and therefore dangerous The manufacturer will not be held responsible for damages resulting from installation errors or failure to comply with the manufacturer s instructions Do not obstruct the fan intake opening or the air delivery grids n case of failure and or poor operation isolate the unit disconnect it from the power supply and close the main gas cock do not attempt any repair or direct servicing Call qualified service engineers only The manufacturer s authorised service centres using only original spare parts must only carry out any repair to the products Misapplication of the above might compromise the s
20. er patented by Robur made of special aluminium alloy fining horizontally on the air side and vertically on the flue side with extremely high capacity of thermal exchange insulated steel casing painted with epoxy powders axial fan with high air flow capacity according to the norms in force regarding the radio interference heat recovering post ventilation User Installation and Service Manual for F1 Gas Unit Heaters r u_ _ O 5 SAFETY AND CONTROL DEVICES High temperature limit switch 100 C with manual reset prevents the overheating of the heat exchangers Pressure differential switch for the control of the correct flue fan operation when fan not operates correctly or the flue air inlet ducts are obstructed the pressure switch stops the gas supply by closing the gas valve Gas valve in the case that one of the safety devices is activated limit thermostat safety thermostat etc the gas valve is automatically de energised with contemporary cut off the burner s gas supply Electrical supply 230 V 50 Hz Operational temperature 0 C to 60 C Model HONEYWELL VK 4125A for the Heaters F1 21 31 41 51 61 BM 762 for the Heater Model F1 81 Ignition and flame control box controls the ignition and flame of the premix burner if the is flame not detected during the safety period the flame control box will stop the appliance with manual reset Safety time ignition 10 seconds Purge
21. fan provides warm air to the room The airflow direction is regulated by means of adjustable louvres A vertical louvres kit is also available on request for horizontal regulation of the airflow The fan control thermostat allows the axial flow fan to start automatically only when the heat exchangers are hot and to turn off when they are cold This prevents cool air being blown into the room If heat exchangers overheat due to malfunction the temperature limit thermostat cuts off the supply to the gas valve thus interrupts fuel flow and turns off the main burner NOTE After removing the cause of overheating Qualified service engineer should carry out resetting of the temperature limit thermostat Ahead of the burner is installed the flue fan which makes the air gas mixture and forces draft of the exhaust flues n case of obstructions in the intake duct or flue fan malfunction a differential pressure switch closes the gas valve and consequently stops fuel flow to the burner Inthe summer time it s possible to activate only the axial fan to provide pleasant and refreshing air movement in the room see Section 4 Paragraph Summer CONSTRUCTIVE CHARACTERISTICS premix burner made of stainless steel high head blower models F1 51 61 81 are provided with electronic board that controls and guarantees constant speed of the blower cylindrical combustion chamber made of stainless steel heat exchang
22. gt 1m s 3 Noise level 6 m distance in free field dB A 41 43 44 46 47 49 in tipycal installation dB A 53 55 56 57 60 63 Weight kg 52 60 63 5 70 90 108 Table 1 1 At20T 1013mbar 2 At 15 1013mbar 3 THROWS FOR GUIDANCE ONLY THROW DEPENDS ON HEIGHT OF THE BUILDING MOUNTING HEIGHT OF THE HEATER ROOM TEMPERATURE AND LOUVRE SETTING WARNING THE ROOM OPERATIONAL TEMPERATURE IS BETWEEN 0 AND 35 C THE APPLIANCE S COMPONENTS OPERATIONAL TEMPERATURE IS BETWEEN 0 AND 60 C DATA REFERED TO THE LOW HEAT VALUE 9 45 kWh m 15 C 1013 mbar WITH THE AIM OF CONTINUOUSLY IMPROVING THE QUALITY OF ITS PRODUCTS THE MANUFACTURER RESERVES THE RIGHT TO VARY ABOVE INFORMATION WITHOUT ANY PRIOR NOTICE User Installation and Service Manual for F1 Gas Unit Heaters PT F 7 o oo 1 gt b ClQ 7 DIMENSIONS OF THE UNITS A B C D E F G H J L N F121 630 651 800 490 370 405 440 430 120 285 95 F131 630 671 800 490 370 405 440 430 120 285 95 F141 770 626 800 490 510 405 580 430 120 285 95 F151 880 658 800 490 620 405 690 430 120 285 95 F161 1070 640 800 490 810 405 880 430 120 285 95 F181 1270 700 800 490 1010 405 1080 430 120 285 95 P Q R S T U V w X Y Z F1 21 390 435 340 600 720 90 3 4 80 80 355 F131 390 435 340 600 720 90 3 4 80 80 355 F1 41 460 435 340 600 720 90 3 4 80 80 410 F1 51 515 435 340 600 720 90 3 4 i 80 80 410 F161 398 435 340 600 720 90 3 4 432 80 8
23. ied once in 2 3 years by normal working conditions or once per year when there is a lot of impurities in the combustion air example B type installation of the heater in factories with welding process User Installation and Service Manual for F1 Gas Unit Heaters 29 WARNING Only qualified service engineer authorised by Manufacturer must carry out the operation of servicing and maintenance OPERATING FAILURES Before checking for possible failures ensure that A Correct electric supply 230 240V 10 50Hz and adequate earthing are provided B The gas is supplied C Pressures and flows are within the limits recommended by the manufacturer A pressure lower than the given limits will result in insufficient gas inlet The causes for this may be the following If the unit is fed with natural Gas a Poor gas meter performance b The length of the pipes and the number of elbows are excessive with respect to the diameter If the unit is fed with L PG a It can happen that after the first time the burner turns off the unit locks out at the moment of ignition In this case it may be that the reducer flow is insufficient b If the required pressure is not reached it may be either that the meter does not provide adequate flow or the length of the pipes and the number of elbows are excessive with respect to the diameter Only at this point proceed with the specific trouble shooting Before openi
24. ion procedures should be as follows A Unpack the unit carefully checking that it has not been damaged Every unit is factory tested before shipment therefore if there are damages report them immediately to the carrier B The minimum distance from the wall behind the unit must be enough for air circulation The minimum distance from the lateral walls is given by Figure 3 C The recommended height from the floor to the heater base is 2 5 to 3 5 m It is not recommended to install the appliance under the 2 5m height D A gas cock and a pipe union must be provided for gas supply E Make sure that an adequate gas supply from the gas network is provided particularly if the unit is supplied with Natural gas G20 Be sure that the pressure of the gas network with the unit in operation is set at 20 mbar 0 29 psig 8 03 in WG allowed tolerance between 17 and 25 mbar 0 25 to 0 36 psig 6 9 to 10 0 in WG LPG Propane Butane mix G30 For the first pressure drop required in the supply it is advisable to install a pressure governor near the liquid gas tank so as to reduce the pressure to 1 5 bar 22 psig A pressure governor for a second pressure drop should be placed near the heater to reduce the pressure to 30 mbar 0 43 psig 12 0 in WG allowed tolerance between 20 and 35 mbar 0 29 to 0 50 psig 8 1 to 14 in WG LPG Pure Propane G31 For the first pressure drop required in the supply it is advisable to install a pre
25. it is disconnected d The gas valve does not open due to a failure of the valve itself or of its electrical connections CASE N3 The temperature limit thermostat M1 stops the burner a The heat exchangers have overheated Check the operation of the fan gas pressure and nozzles b The exchangers overheat due to accumulation of dirt Clean the exchangers dirt can also obstruct and supply grille To reset the thermostat when electricity returns push the reset button which is placed externally on the rear panel under the black screw plug see figure 24 CASE 4 The burner goes out and does not re ignite even if room temperature requires it a Check the performance of the room thermostat and its electrical connections b Check the position of the room thermostat check that it is not influenced by external heat sources CASE N5 The exhaust fan will not start a b C d lt Check that the room thermostat is set on the desired temperature Check the electrical connections of the exhaust fan and its capacitor Check integrity of the unit s protection fuse Make sure that neither the limit nor the safety thermostat have operated 2 CASE The exhaust fan starts but the unit does not ignite a Intake and or exhaust duct are obstructed or too long b The electrical or pneumatic connections of the pressure switch are faulty c The flame control unit does not start the cycle replace the internal
26. ndly energy efficiency products through the commitment and caring of its employees and partners Revision Code D LBR158 14MEDSDCOO3 05 02 2014 Robur Mission fROBUF caring for the environment Robur Spa advanced heating and cooling technologies VEU Via Parigi 4 6 AG 24040 Verdellino Zingonia Bg Italy 39 035 888111 39 035 4821334 001 kak 2000 VIRSI N www roburcom export robur it
27. ned off close the gas cock and disconnect the electric supply by using the omnipolar switch placed on the supply line NOTE It is not good practice to turn the unit off by disconnecting the electric power supply as this may damage the unit In fact this causes the immediate stop of the fans unit overheating and possibly the activation of the temperature limit thermostat Summer operation Close the gas cock and check the power supply Press the button A in the position summer 3 and fan will start End of the season Turn off the appliance and wait the arrest of the fans Cut off the gas supply of the appliance Cut off the electrical supply if summer ventilation is not foreseen Reset of high limit temperature switch High limit temperature switch stops the burner if appliance is overheated It must be reset manually by pushing the reset button placed on the rear panel of the appliance remove the protection cap first see figure 24 After resetting replace the protection cap Figure 24 WARNING The activation of the High Limit Temperature Switch indicates ALWAYS the malfunction of the appliance In case of frequent stops of the unit please contact Client Support service 28 SSS UU LL l II User Installation and Service Manual for F1 Gas Unit Heaters SECTION 5 MAINTENANCE AND SERVICING REMOVABLE BURNER The burner mounted inside the F1 Gas Unit Heaters is removable type this
28. ng the side door to access the control panel CUT OUT THE POWER SUPPLY to the unit using the omnipolar switch TYPES OF FAILURES AND SERVICING In case of a failure call a qualified service engineer CASE 1 The unit locks out during the first ignition phase 2 The ignition electrodes are broken or badly positioned The flame sensor is broken or incorrectly positioned or touches the unit ground Failure in the flame control unit or in its electrical connections Failure in the gas valve or in its electrical connections Check that the unit has a good earth Air is inside the gas pipes Wrong adjustment of the gas pressure on the burner e gt e o o g CASE N 2 The unit locks out during operation a The gas supply is suddenly cut off due to a failure in the gas system The ignition control repeats the ignition cycle after which the gas valve closes locking out the unit accidental gas inlet cut off b The power supply is suddenly cut off due to a failure in the electrical supply mains If the electrical cut off period is prolonged the temperature limit thermostat M1 locks out the unit thus preventing re ignition When electricity returns push the reset button which is placed 30 User Installation and Service Manual for F1 Gas Unit Heaters externally on the rear panel under the black screw plug accidental power supply break see figure 23 c The flame sensor touches the unit ground or
29. nit with electric power by closing the omnipolar switch Press the button A summer winter in the position winter see figure 23 After the pre purge period about 40 seconds the gas solenoid valve opens and the ignition electrode begins to sparkle and lights the burner When flame detected the flame control box is keeping the gas valve opened Otherwise the flame control unit locks out the heater the gas supply to the burner is shut off and a lock out light C on the reset button B lights up see figure 23 When default described at item 7 occurs press the reset button B If ignition has occurred regularly set the room thermostat to the desired temperature WARNING After a long period of inactivity of the unit or at the first start up it may be necessary to repeat the ignition operation a few times due to the presence of air in the piping A summer winter switch winter position for the heating function summer position Xf for the ventilation B reset button C Ick out light Figure 23 REMOTE CONTROL SWITCH User Installation and Service Manual for F1 Gas Unit Heaters 07 Stop of the unit To turn off the unit set the room thermostat to the lowest temperature The burner is turned off while the fan will continue to operate until the unit is completely cold WARNING In case of long inactivity after carrying out the above operation and after the fans have tur
30. ol cables specially those linked to the remote control and to the temperature probe must be kept far away from electrical cables this can be done using e g shielding or separate pipes for the two types of cables BURNER PRESSURE ADJUSTMENT For correct operation the burner pressure must be as given in table n n and n 7 The burner gas pressure of each unit is set at the factory and is shown by the labels on the package and by a label inside the control panel of each unit In the case the pressure adjustment is necessary keep in mind that Natural Gas the pressure is to be adjusted by turning the adjustment screw A figure 14 LPG the adjustment screw is to be screwed down completely to the stop in order to put the pressure regulator out of operation The reduction of the pressure from the mains is possible by adjusting the low pressure governor installed on the gas supply line see section 3 General rules for unit installation page 6 item E Before adjustment of the burner pressure identify TYPE OF THE GAS VALVE installed in the appliance see figure 14 than proceed as following Connect the manometer to the gas pressure tap E after unscrewing valve setting screw Turn on the appliance Turn clockwise counterclockwise the setting screw A in order to set the required pressure value When LPG gas used turn completely the setting screw A and if the pressure needs an ulterior correction adjust the low pressure gas
31. ow 90 Pa Coaxial Pa Wall Roof Roof Flue Air Flue Air OSCR007 OSCRO08 Flue Aur Flue Air OSCR009 F1 21 0 9 0 5 1 0 1 0 1 7 2 1 0 2 0 2 0 5 0 5 1 2 F1 31 1 4 0 7 2 6 1 3 3 2 8 7 0 3 0 3 1 7 0 8 5 1 F1 41 20 1 0 4 2 1 8 4 9 N P 06 0 6 2 8 1 3 10 1 F1 51 23 1 6 6 5 3 5 N P N P 13 1 0 5 0 2 5 16 9 F1 61 35 24 9 9 5 7 N P N P 2 1 1 1 7 4 4 7 N P F1 81 9 3 4 14 8 11 0 N P N P 25 14 10 9 8 1 N P NP INSTALLATION NOT POSSIBLE N D INSTALLATION NOT AVAILABLE TECHNICAL DATA FOR PIPES 130 SUPPLIED ON REQUEST BY MANUFACTURER Components pressure loss 130 Mod Pipe Pa m Elbow 90 Pa Coaxial Pa Flue Air Flue Air 1 ORTOS 4 F1 51 0 8 0 2 2 8 1 2 14 14 F1 61 1 1 0 3 3 2 1 4 19 19 F1 81 1 4 0 5 4 2 1 8 25 25 Table 3A For each T shaped piece an increment of 3 m in length should be added For each 45 elbow an increment of 1 2 m in length should be added Note User Installation and Service Manual for F1 Gas Unit Heaters 13 MAXIMAL PIPE LENGTH BY VARIOUS INSTALLATION Type of Installation B 23 C 13 33 53 Coaxial pipe wall Coaxial pipe Roof Mod pipe 080 Separate 9 125 180 125 150 210 pipe OSCRO07 OKTCO04 oscRoos oscRoos Pipe 60 Hori veni Bee m Um S S flue flue air flue air flue air flue air flue air flue air flue air flue F1 21 21 16 13413
32. particular construction characteristic allows the cleaning of the burner WARNING The cleaning of the burner is to be done by qualified personal Erroneous or not correct operation of the gas pipeline can cause dangerous gas leakages on all circuit and particularly on the tamped segment To clean the burner proceed as follows Cut off the electricity and gas supply Open the side panel of the heater Demount the hexagonal nut which connect gas pipe and the air blower see figure 15 Move the gas pipe and remove the gas nozzle see figure 17 Remove 4 nuts which fix the casing of air blower Remove the deflector and gasket Loose 4 screws which fix the burner and when the burner is leaned on the bottom unscrew and remove them completely 8 Insert a pipe inside the burner ATTENTION don t bend the burner and don t damage the deflectors inside the burner and use the pipe as a lever to pull it up and than to remove the burner 9 Clean the burner with compressed air 10 Reinsert the burner MOTE slot inside the burner must be in the upper position 11 Fix the lower screws first and than the upper ones Cross tighten the screws 12 Reinsert the diaphragm and relative gaskets 13 Fix the casing of the air blower with 4 screws 14 Insert the nozzle and gasket in the holder of the nozzle 15 Screw tight the hexagonal which fix the gas pipe to the blower NO of WD gt This procedure is to be appl
33. properly positioned and does the 1 DT after 30 seconds cable touch any of the unit s metal a arts Reset the unit on the remote control box Reverse the supply connection live and The burner starts but E stops soon after the end of the spark train 3 Replace the flame control box Check the phi Is it correct Is bent or does It touch the burner Reset the unit on the remote control box NO Check gas supply mains Is there gas Check valve voltage Is there voltage In the gas The burner starts or gas Is present YES Replace the capacitor If the failure persists replace the fan motor Check fan thermostat for correct operation Isit locked out Fan starts after a few minutes C om appliance is operatina User Installation and Service Manual for F1 Gas Unit Heaters With the aim of continuously improving the quality of our products Robur S p A reserves the right to vary above instructions and drawings without any prior notice Robur S p A Via Parigi 4 6 24040 Verdellino Zingonia BG Italy Phone 39035888111 Fax 39035884165 http www robur it e mail robur robur it 34 User Installation and Service Manual for F1 Gas Unit Heaters Robur is dedicated to dynamic progression in research devepment and promotion of safe environmentally frie
34. see figure 17 E Take off the gasket and mount it at the new nozzle F Thread the new nozzle at the seat G Re assembly the gas pipe Check that the round gasket inside the ring nut and the square one at the valve fitting are positioned correctly Tight the ring nut whit tightening torque of 62 2Nm tight the valve screws Figure 17 H Proceed then with the adjustment of the unit as described in previous chapter Burner pressure adjustment 1 When appliance is on check for gas leakage with soapy solution or other suitable method Check all fittings even those which were not handled during the operation J Replace the label showing the type of gas for which the unit is set with the other one indicating the type of gas actually used sna rat Fisr Frer Fri Natural Gas G20 mm 440 5 60 6 10 800 9 00 11 10 Code 072 073 075 076 077 078 LPG G30 G31 mm 2 50 3 00 325 3 65 420 4 80 Code 079 080 081 129 098 130 Table 7 User Installation and Service Manual for F1 Gas Unit Heaters Sa OPERATING WIRING DIAGRAM LEGEND M9 fuse 5x20 6 3 AF NP pressure switch M2 fan thermostat CS combustion blower capacitor only for F1 21 31 41 CV fan capacitor 2 pcs for F1 61 81 S combustion blower motor V fan motor 2 pcs for F1 61 81 TR ignition transformer 21 summer winter
35. ssure governor near the liquid gas tank so as to reduce the pressure to 1 5 bar 22 psig A low pressure governor for a second pressure drop should be placed near the heater to reduce the pressure to 37 mbar 0 43 psig 12 0 in WG allowed tolerance between 25 and 45 mbar 0 29 to 0 50 psig 8 1 to 14 in WG NOTE In the case of doubt adjust the appliance as for the propane butane mix F Carry out the electrical connections according to the installation wiring diagram see figure 19 checking that the voltage supply is 230 50Hz single phase For this operation make sure that all electrical supply parameters are according to those required on the type plate of the appliance wire type is H05 VVF 3x1 mm2 with a maximum external diameter of 8 4 mm when connecting ensure that the earth wire is longer than the live wires so that it will be the last wire to break if the supply cable is stretched thus ensuring a good earth continuity User Installation and Service Manual for F1 Gas Unit Heaters 9 NOTE The electrical safety of the unit is attained only when the unit itself is correctly connected and efficiently grounded according to the existing safety standards Do not use gas tubes to earth electrical apparatus G The unit should be connected to the electric supply line by means of an omnipolar switch with a minimum contact opening of 3 mm An omnipolar switch is a Double pole isolating
36. switch i e a switch capable of disconnecting both on phase and neutral This means that when the switch is opened both contacts are disconnected H It is mandatory to install a room thermostat connected to the unit according to the installation wiring diagram figure 19 It is recommended to place the sensor at about 1 5 m from the floor protected against air draughts direct exposure to sun rays and direct heat sources lamps hot air flows from the unit itself etc If possible DO NOT place the thermostat on walls bordering the outside to avoid false temperature readings and therefore system operation IF THE ROOM THERMOSTAT IS PROPERLY INSTALLED UNWANTED STARTING AND STOPPING OF THE SYSTEM WILL BE AVOIDED AND ADEQUATE ROOM COMFORT WILL BE ENSURED As an alternative to the room thermostat it s possible to install the programmable remote control which could be supplied on request as an optional accessory I To obtain the maximum system efficiency it is advisable to comply with the following rules Install units as close as possible to the work area taking care that the air flow does not come directly into the contact with people Take obstacles into consideration columns etc For better heat distribution in the case of multiple unit installation create alternate flows of hot air see figure 4 n some cases it may be suitable to place the units close to the main doors so they can operate as an air barrier when doors are op
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