Related Manuals for Unigas H455A
Summary of Contents for Unigas H455A
- Page 1 H455A H630A H685A Gas - light oil burners MANUAL OF INSTALLATION - USE - MAINTENANCE BURNERS - BRUCIATORI - BRULERS - BRENNER - QUEMADORES - ГОРЕЛКИ M039618CA 0.3 09/2022...
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Page 2: Risk Analysis
DANGERS, WARNINGS AND NOTES OF CAUTION - Powering of the burner with unsuitable fuels; - Faults in the fuel supply system; - Use of the burner even after an error and/or fault has occurred; This manual is supplied as an integral and essential part of - Repairs and/or overhauls incorrectly carried out;... - Page 3 sure that these instructions accompany the equipment at all times so for an accurate inspection of electrics by qualified personnel, since the that they can be consulted by the new owner and/or the installer. manufacturer cannot be held liable for damages that may be caused by failure to correctly earth the equipment.
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Page 4: Symbols Used
Do not obstruct the ventilation openings of the room where gas ATTENTION: while running, the parts of the burner near the appliances are installed, to avoid dangerous conditions such as the generator (coupling flange) are subject to overheating. development of toxic or explosive mixtures. Where necessary, avoid any contact risks by wearing suita- ble PPE. - Page 5 PART I: SPECIFICATIONS PART I: SPECIFICATIONS Note: the figure is indicative only Mimic panel with startup switch Gas filter Gas valve group Cover Flange Blast tube-Combustion head group Oil pressure governor Actuator Adjusting cams 10 Air intake 11 Air pressure switch 12 Oil manifold 13 Head adjusting ring nut 14 Pump...
- Page 6 Burners are identified by burner type and model. Burner model identification is described as follows. Type H630A Model MD. SR. BURNER TYPE H455A, H630A, H685A, FUEL MG: Natural gas-Light oil, LG: LPGLight oil, CG: Off-gas - Light oil OPERATION (Available versions) PR - Progressive MD - Fully modulating BLAST TUBE...
- Page 7 Overall dimensions (mm) Boiler recommended drilling template Burner flange *DN = gas valves size TIPO (AS) (BS) H455A 1712 1217 1561 H455A 1712 1217 1584 H455A 1712 1217 1617 1002 H455A 1712 1217 1697 1082 H630A 1747 1217 1561 H630A...
- Page 8 Fig. 4 - 3I2MG-24 v0 Hydraulic diagram 3I2MG24 rev.0 - LEGEND OIL TRAIN Filter Flexible hose Pump and pressure governor Electrical motor Flexible hose oil inlet Solenoid valve Flexible hose oil outlet 3-way solenoid valve Flexible hose Oil distributor 19.1 Flexible hose Pressure gauge Pressure governor...
- Page 9 PART I: SPECIFICATIONS How to read the burner “Performance curve” To check if the burner is suitable for the boiler to which it must be instal- Campo di lavoro bruciatori lled, the following parameters are needed: Tipo P60 Mod. M-xx.x.IT.A.0.50 - M-.xx.x.IT.A.0.65 furnace input, in kW or kcal/h (kW = kcal/h/860);...
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Page 10: Performance Curves
PART I: SPECIFICATIONS Performance Curves H455A M- H630A M- H685A M- 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 11 Pressure in the Network / gas flow rate curves(natural gas) WARNING: the diagrams refers to natural gas. For different type of fuel please refer to the paragraph “Fuel” at the beginning of this chapter. H455A H630A Gas rate Stm Gas rate Stm...
- Page 12 (quoted on the y axis). The data obtained must be considered when adjusting the gas flow rate. Gas pressure burner head vs natural gas flow rate Curves are referred to pressure = 0 mbar in the combustion chamber! H455A MG.. H630A MG.. H685A MG..
- Page 13 PART II: INSTALLATION PART II: INSTALLATION MOUNTING AND CONNECTING THE BURNER Packing The burners are despatched in wooden crates whose dimensions are: series: 1810mm x 1310mm x 1060mm (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 detached gas train;...
- Page 14 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) on boiler’s door, according to the burner drilling template described on paragraph “Overall dimensions”;...
- Page 15 PART II: INSTALLATION GAS TRAIN CONNECTIONS The diagrams show the components of the gas train included in the delivery and which must be fitted by the installer.The diagrams are in compliance with the current laws. Note: the figure is indicative only ”direction”...
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Page 16: Mounting Positions
PART II: INSTALLATION GAS TRAIN CONNECTIONS The diagrams show the components of the gas trai included in the delivery and which must be fitted by the installer.The diagrams are in compliance with the current laws. Gas train with valves group VGD and MBE with built-in gas pressure governor + gas leakage pressure switch (PGCP) by others supplied by burner constructor gas inlet... - Page 17 PART II: INSTALLATION MultiBloc MBE ALLA V. FARFALLA Example of gas train MBE 501939 GAS BRUCIATORE ø185 VD-R VD-V VD-R VD-V Gas filter PGMAX PGMAX PGMI PGMIN PS pressure sensor PGCP PGCP ATTENTION: once the gas train is mounted according, the gas proving test mus be performed, according to the procedure set by the laws in force.
- Page 18 PART II: INSTALLATION 1. Gas pressure regulation is possible with VD-R and PS pressure sensor only. WARNING! For US/CN installation, the output pressure must be monitoried by min. and max. pressure switches set to +/- 20% of the setpoint. 2. Mounting on pipe. Sensor position: 5x DN according to MBE. Pipe fitting with female thread size ¼, mount sensor with seal, observe torque.
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Page 19: Gravity Circuit
PART II: INSTALLATION Siemens VGD SKPx5 (Auxiliary-optional micro switch) Actuator connection Valve drive End of stroke Plug connection Plug connection (only with SKPxx.xx1xx) A Valve closed OIL TRAIN CONNECTIONS Hydraulic diagrams for light oil supplying circuits GRAVITY CIRCUIT RING CIRCUIT 1 Manual valve 2 Light oil filter 3 Light oil feeding pump... - Page 20 PART II: INSTALLATION Installation diagram of light oil pipes please read carefully the “warnings” chapter at the beginning of this manual. Fig. 5 - 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 21 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 ...
- Page 22 PART II: INSTALLATION Suntec TA.. Oil viscosity 3 ÷ 75 cSt Oil temperature 0 ÷ 150°C Min. suction pressure - 0.45 bar to avoid gasing Max. suction pressure 5 bar Max. return pressure 5 bar Rotation speed 3600 rpm max. 1.
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Page 23: 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 24 PART III: OPERATION PART III: OPERATION LIMITATIONS OF USE THE BURNER IS AN APPLIANCE DESIGNED AND CONSTRUCTED TO OPERATE ONLY AFTER BEING CORRECTLY CONNEC- TED TO A HEAT GENERATOR (E.G. BOILER, HOT AIR GENERATOR, FURNACE, ETC.), ANY OTHER USE IS TO BE CONSIDE- RED IMPROPER AND THEREFORE DANGEROUS.
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Page 25: Gas Operation
PART III: OPERATION Fig. 7 - Burner control panel Keys Burner Modulator (only on fully modulating burners) Lock-out LED Hi-flame operation LED Lo-flame operation LED “Ignition transformer operation” LED “Fan motor overload tripped” LED Stand-by signalling lamp Main switch (0=Off, 1=GAS, 2=OIL) Reset pushbutton for control box B2 B3 B4 CMF switch... -
Page 26: Adjustments For Gas Operation
PART III: OPERATION Integrated proving system (burners equipped with LME7x, LMV, LDU) This paragraph describes the integrated proving system operation sequence: At the beginning both the valves (EV1 and EV2) must be closed. Test space evacuating: EV2 valve (burner side) opens and keep this position for a preset time ... - Page 27 PART III: OPERATION Air and Gas Flow Rate Settings by means of Berger STM30../Siemens SQM40.. actuator check the fan motor rotation. Only for burners provided with Multibloc MB-DLE gas valves: before starting the burner up, set the slow opening. To set the slow opening, remove cover T, reverse it upside down and use it as a tool to rotate screw VR.
- Page 28 PART III: OPERATION 13 If necessary, adjust the combustion head position (see the dedicated paragraph).. Attention! if it is necessary to change the head position, repeat the air and gas adjustments described above. TTENZIONE 14 The air and gas rate are now adjusted at the maximum power stage, go on with the point to point adjustement on the SV1 (gas side) adjusting cam as to reach the minimum output point.
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Page 29: Pressure Taps
PART III: OPERATION MultiBloc MBE Regulation VD-R whith PS Setting scale is „Not“ linear! Various sensors available. Output pressure according to sensor‘s measuring range. Increasing pressure Adjust the outlet pressure to the value specified by the burner or equipment manufacturer! Decreasing pressure While making outlet pressure adjustments, do not exceed a value that creates a hazardous condition to the... - Page 30 PART III: OPERATION Setting air and gas pressure switches The air pressure switch locks the control box if the air pressure is not the one requested. If it happens, unlock the burner by means of the control box unlock pushbutton, placed on the bur- ner control panel.
- Page 31 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. Only if necessary, change the combusiton head position: to let the burner operate at a lower output, loose the VB screw and move pro- gressively back the combustion head towards the MIN position, by turning clockwise the VRT ring nut.
- Page 32 PART III: OPERATION Adjustment procedure for light oil operation The light oil flow rate can be adjusted choosing a by-pass nozzle that suits the boiler/utilisation output and setting the delivery and return pressure values according to the ones quoted on the below diagrams. FLUIDICS NOZZLE: REFERENCE DIAGRAM (INDICATIVE ONLY) Atomisation angle FLOW RATE kg/h...
- Page 33 PART III: OPERATION Oil Flow Rate Settings 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 34 PART III: OPERATION 15 The low flame position must never match the ignition position that is why the cam must be set 20°- 30° more than the ignition posi- tion. 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 CMF switch on the burner control panel (see next picture), instead of the TAB thermo- stat as described on the previous paragraphs about the progressive burners.
- Page 35 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 36 PART IV: MAINTENANCE Thecnical procedure of self cleaning filters substitution (valid for all models) 1 Close the bowl valve before the self cleaning filter 2 Switch off any electrical equipment on board on the filter (example motorization or heaters) WARNING! Drain the system by unscrewing the drain screw on the bottom of the self cleaning filter 3 Disconnect the outlet pipe from the cover of the self cleaning filter 4 Remove the cover with all the filter pack, leaving only the bowl on the line 5 Clean any residue on the bottom of the bowl and clean the seat of the O-ring seal...
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Page 37: Electrodes Adjustment
PART IV: MAINTENANCE Removing the combustion head Remove the top H. Remove the UV detector out of its housing: disconnect electrode cables and the light oil flexible hoses. Loosen the screws V holding the gas manifold G, loosen the connectors E. Some models are provided with the T baffle. -
Page 38: Seasonal Stop
PART IV: MAINTENANCE Checking the detection current To check the detection signal follow the scheme in the picture below. If the signal is less than the value indicated, check the position of the detection electrode or detector, the electrical contacts and, if necessary, replace the electrode or the detector. Control box Minimum detection signal 70µA (with UV detector) - Page 39 PART IV: MAINTENANCE TROUBLESHOOTNG GUIDE Gas operation * No electric power supply * Restore power supply * Main switch open * Close switch * Thermostats open * Check set points and thermostat connections * Bad thermostat set point or broken thermostat * Reset or replace the thermostat * No gas pressure * Restore gas pressure...
- Page 40 PART IV: MAINTENANCE * No electric power supply * Wait for electric power supply is back * Main switch open * Close the switch * Thermostats open * Check set points and thermostat connections * Bad thermostat set point or broken thermostat * Set or replace the thermostat * No gas pressure * Restore gas pressure...
- Page 44 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 excepted.