Related Manuals for Unigas RG75
Summary of Contents for Unigas RG75
- Page 1 RG75 Light oil burners MANUAL OF INSTALLATION - USE - MAINTENANCE BURNERS - BRUCIATORI - BRULERS - BRENNER - QUEMADORES - ГОРЕЛКИ M039338CA Rel. 0.3 10/2020...
-
Page 2: General Introduction
DANGERS, WARNINGS AND NOTES OF CAUTION THIS MANUAL IS SUPPLIED AS AN INTEGRAL AND ESSENTIAL PART OF THE PRODUCT AND MUST BE DELIVERED TO THE USER. INFORMATION INCLUDED IN THIS SECTION ARE DEDICATED BOTH TO THE USER AND TO PERSONNEL FOLLOWING PRODUCT INSTALLATION AND MAINTENANCE. -
Page 3: Directives And Standards
DIRECTIVES AND STANDARDS bare feet; Gas burners do not pull electric cables; European directives do not leave the equipment exposed to weather (rain, sun, etc.) -2009/142/EC (Gas Directive) unless expressly required to do so; -2014/35/UE (Low Tension Directive) do not allow children or inexperienced persons to use equipment; -2014/30/UE (Electromagnetic compatibility Directive) The unit input cable shall not be replaced by the user. -
Page 4: Symbols Used
-EN 60204-1:2006 (Safety of machinery – Electrical equipment of machi- nes.) Failure to observe the warning may -CEI EN 60335-1 (Specification for safety of household and similar electri- result in serious injuries or death. DANGER! cal appliances); -CEI EN 60335-2-102 (Household and similar electrical appliances. Safety. - Page 5 PART I: SPECIFICATIONS PART I: SPECIFICATIONS BURNERS FEATURES Fig. 1 Note: the figure is indicative only. Control panel with startup switch Pump Electrical panel Silencer Flange Blast tube + Combustion head Pressostato (progressive/fully modulating burners only) Actuator Oil pressure governor Light oil operation:the fuel coming from the supply line, is pushed by the pump to the nozzle and then into the combustion chamber, where the mixture between fuel and air takes place and consequently the flame.
-
Page 6: Burner Type
PART I: SPECIFICATIONS Burner model identification Burners are identified by burner type and model. Burner model identification is described as follows. RG75 MD. S. Type Model RG75 BURNER TYPE FUEL G - Light oil OPERATION (Available versions) PR - Progressive... - Page 7 O min O max Burner flange AA AB AC AD AE AH AM Omin Omax RG75 1508 69 282 217 28 527 385 307 489 960 352 938 361 254 270 300 453 M10 330 233 187 608 221 155...
- Page 8 Boiler recommended drilling tem- O min O max Burner flange AA AB AC AD AE AH Omin Omax RG75 1380 69 314 217 28 527 385 489 833 352 938 361 254 270 300 453 M10 330 233 187 608 221 155...
- Page 9 Progressive/Fully modulating version Fig. 2 - 3I2G-25 v0 Hydraulic diagram OIL TRAIN Filter Flexible hose Pump and pressure governor Solenoid valve Flexible hose Solenoid valve oil inlet Oil distributor Flexible hose oil outlet Pressure gauge Pressure governor Pressure switch One-way valve 16.1 One-way valve Flexible hose...
- Page 10 Double stage Version Fig. 3 - 3I2G-26 v0 Hydraulic diagram OIL TRAIN Filter Flexible hose Pump and pressure governor Solenoid valve Solenoid valve oil inlet Solenoid valve Flexible hose COMBUSTION AIR TRAIN oil outlet Air damper Actuator Draught fan with electromotor Burner combustion air BY OTHERS...
-
Page 11: Performance Curves
Data are referred to standard conditions: atmospheric pressure at 1013mbar, ambient temperature at 15°C. Performance Curves RG75 To get the input in kcal/h, multiply value in kW by 860. Data are referred to standard conditions: atmospheric pressure at 1013mbar, ambient temperature at 15°C NOTE: The performance curve is a diagram that represents the burner performance in the type approval phase or in the laboratory tests, but does not represent the regulation range of the machine. - Page 12 PART II: INSTALLATION PART II: INSTALLATION MOUNTING AND CONNECTING THE BURNER Packing The burners are despatched in wooden crates whose dimensions are: 1672mm x 1072mm x 1016mm (L x P x H) Packing cases of this type are affected by humidity and are not suitable for stacking. The following are placed in each packing case: burner with gas train;...
- Page 13 PART II: INSTALLATION Fitting the burner to the boiler To install the burner into the boiler, proceed as follows: make a hole on the closing door of the combustion chamber as described on paragraph “Overall dimensions”) place the burner to the boiler: lift it up and handle it according to the procedure described on paragraph “Handling the burner”; place the 4 stud bolts (5), according to the burner’s drilling plate described on paragraph “Overall dimensions”;...
- Page 14 PART II: INSTALLATION Matching the burner to the boiler The burners described in this manual have been tested with combustion chambers that comply with EN676 regulation and whose dimensions are described in the diagram . In case the burner must be coupled with boilers with a combustion chamber smaller in dia- meter or shorter than those described in the diagram, please contact the supplier, to verify that a correct matching is possible, with respect of the application involved.
- Page 15 PART II: INSTALLATION Hydraulic diagrams for light oil supplying circuits Fig. 5 - Gravity circuit Fig. 6 - Ring circuit Fig. 7 - Suction circuit Manual valve Light oil filter Light oil feeding pump One way valve Flexible hoses Relief valve NOTE: in plants where gravity or ring feed systems are provided, install an automatic interception device.
- Page 16 PART II: INSTALLATION Installation diagram of light oil pipes PLEASE READ CAREFULLY THE “WARNINGS” CHAPTER AT THE BEGINNING OF THIS MANUAL. From tank To tank Fig. 8 - Double-pipe system The burner is supplied with filter and flexible hoses, all the parts upstream the filter and downstream the return flexible hose, must be installed by the customer.
- Page 17 PART II: INSTALLATION About the use of fuel pumps Do not use fuel with additives to avoid the possible formation over time of compounds which may deposit between the gear teeth, thus obstructing them. After filling the tank, wait before starting the burner. This will give any suspended impurities time to deposit on the bottom of the tank, thus avoiding the possibility that they might be sucked into the pump.
- Page 18 PART II: INSTALLATION Connecting the oil flexible hoses to the pump To connect the flexible oil hoses to the pump, proceed as follows, according to the pump provided: remove the closing nuts A and R on the inlet and return connections of the pump; screw the rotating nut of the two flexible hoses on the pump being careful to avoid exchanging the lines: see the arrows marked on the pump.
-
Page 19: Electrical Connections
PART II: INSTALLATION ELECTRICAL CONNECTIONS WARNING! Respect the basic safety rules. make sure of the connection to the earthing system. do not reverse the phase and neutral connections. fit a differential thermal magnet switch adequate for connection to the mains. WARNING! before executing the electrical connections, pay attention to turn the plant’s switch to OFF and be sure that the burner’s main switch is in 0 position (OFF) too. - Page 20 PART III: OPERATION PART III: OPERATION WARNING: before starting the burner up, be sure that the manual cutoff valves are open and check that the pressure upstream the gas train complies the value quoted on paragraph “Technical specifications”. Be sure that the mains switch is closed.
-
Page 21: Light Oil Operation
PART III: OPERATION Light oil operation Set to the ON position the switch S1 on the control panel of the burner. Check the control box is not in the lockout position (light B1 must be off); in such a case reset it by the reset pushbutton S2. Check the series of thermostats (or pressure switches) sends the burner the signal to operate. - Page 22 PART III: OPERATION Double stages burner Fig. 10 - Burner front panel Keys Lock-out LED Hi-flame operation LED Lo-flame operation LED “Ignition transformer operation” LED “Fan motor overload tripped” LED Main switch Reset pushbutton for control box EVG1 solenoid valve operation LED EVG2 solenoid valve operation LED “Pump motor overload tripped”...
- Page 23 PART III: OPERATION AIR FLOW AND FUEL ADJUSTMENT WARNING! During commissioning operations, do not let the burner operate with insufficient air flow (danger of formation of carbon monoxide); if this should happen, make the fuel decrease slowly until the normal combustion values are achieved.
- Page 24 PART III: OPERATION RETURN PRESSURE bar Nozzle sizeNozzl 12,4 13,8 15,2 e size (GPH) 0,75 10,5 10,8 12,4 13,5 10,7 10,0 11,9 13,8 15,3 11,0 11,3 12,4 13,7 18,4 19,7 12,1 10,3 11,6 13,0 14,1 17,3 20,2 21,0 12,8 10,0 11,0 11,9 12,9...
- Page 25 PART III: OPERATION Fig. 11 Example (Bergonzo): if a 220kg/h flow rate BERGONZO nozzle is provided, set the return pressure at 11bar, supply at 20bar on the delivery to get a 220kg/h flow rate. If the return pressure needed is 5bar, instead, act on the V adjusting screw on the pressure governor (see chapter on page 23).
- Page 26 PART III: OPERATION FLUIDICS KW3...60° NOZZLE SUPPLY PRESSURE = 20 bar. VISCOSITY AT NOZZLE = 5 cSt The nominal size of the nozzle is indicated at the ends of the curve Pressure on return (bar)
- Page 27 PART III: OPERATION FLUIDICS KW3...60° NOZZLE SUPPLY PRESSURE = 20 bar. VISCOSITY AT NOZZLE = 5 cSt The nominal size of the nozzle is indicated at the ends of the curve Pressure on return (bar) Pressure on return (bar)
- Page 28 PART III: OPERATION Double-stage burners Once the air and gas flow rates are adjusted, turn the burner off, switch to the oil operation (OIL, on the burner control panel). with the electrical panel open, prime the oil pump acting directly on the related CP contactor (see next picture): check the pump motor rotation and keep pressing for some seconds until the oil circuit is charged;...
- Page 29 PART III: OPERATION actuator will close to the new position of ST1; to increase the low flame position, move the cam higher to the required position, make the bridge between the 6 and 7 terminals only for a while and then remove it immediately: the actuator will move for just few degrees towards the high flame, then it will move down to the new ST1 low flame position;...
- Page 30 SQM40.265 CSW Actuator cams High flame II Stand-by III Low flame - gas VI Ignition - gas MAN-AUTO Only if necessary, adjust the supply pressure as follows;insert a pressure gauge into the port shown on figure and act on on the pump adjusting screw VR.
- Page 31 PART III: OPERATION Turn the burner off; then start it up again. If the adjustment is not correct, repeat the previous steps. Fully modulating burners To adjust the fully-modulating burners, use the S3 switch on the burner control panel (see next picture), instead of the TAB thermostat as described on the previous paragraphs about the progressive burners.
- Page 32 PART III: OPERATION Adjusting the combustion head Attention! if it is necessary to change the head position, repeat the air and fuel adjustments described above. The burner is factory-adjusted with the combustion head in the "MAX" position, accordingly to the maximum power. To operate the bur- ner at a lower power, progressively shift back the combustion head, towards the "MIN"...
- Page 33 PART IV: MAINTENANCE PART IV: MAINTENANCE At least once a year carry out the maintenance operations listed below. In the case of seasonal servicing, it is recommended to carry out the maintenance at the end of each heating season; in the case of continuous operation the maintenance is carried out every 6 months.
-
Page 34: Electrodes Adjustment
ATTENTION: avoid the ignition and detection electrodes to contact metallic parts (blast tube, head, etc.), other- wise the boiler’s operation would be compromised. Check the electrodes position after any intervention on the combustion head. Adjust the electrodes position, according to the quotes shown in the next picture. RG75..AB RG75..PR/MD RG75..AB RG75..PR/MD 9 ÷... - Page 35 PART IV: MAINTENANCE Cleaning/replacing the electrodes ATTENTION: avoid the electrodes to get in touch with metallic parts (blast tube, head, etc.), otherwise the boiler operation would be compromised. Check the electrodes position after any intervention on the combustion head. To clean/replace the electrodes, proceed as follows: remove the combustion head as described in the previous paragraph;...
-
Page 36: Wiring Diagrams
PART IV: MAINTENANCE WIRING DIAGRAMS Refer to the attached wiring diagrams. WARNING 1 - Electrical supply 230V / 400V 50Hz 3N a.c. 2 - Do not reverse phase with neutral 3 - Ensure burner is properly earthed... - Page 37 APPENDIX SIEMENS OIL BURNERS AUTOMATIC CONTROLLER SIEMENS LMO14 - LMO24 - LMO44 Yellow The LMO... burner controls are designed for the start-up and supervision Green of single- or 2-stage forced draught oil burners in intermittent operation. Yellow-burning flames are supervised with photoresistive detectors Colour code table QRB..., blue-burning flames with blue-flame detectors QRC...
-
Page 38: Control Sequence
LMO24 - LMO44 A ´ μC control μC1 μC2 t 3n t 3n t 3n 7130a01e/0700 LMO24 - LMO44 7130d03e/ 0700 µC cont r ol µC 1 µC 2 Alarm device kbr... Cable link (required only when no oil pre-heater is used) BV... - Page 39 General unit data Mains voltage AC 230 V +10 % / -15 % AC 120 V +10 % / -15 % Mains frequency 50...60 Hz ±6 % External primary fuse (Si) 6.3A (slow) Power consumption 12 VA Mounting orientation optional Weight approx.
- Page 40 C.I.B. UNIGAS S.p.A. Via L.Galvani, 9 - 35011 Campodarsego (PD) - ITALY Tel. +39 049 9200944 - Fax +39 049 9200945/9201269 web site: www.cibunigas.it - e-mail: cibunigas@cibunigas.it Note: specifications and data subject to change. Errors and omissions exceptd.