Riello 20190698 User Manual Download

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Installation, use and maintenance instructions

20190798 (1) - 07/2021

Forced draught gas burner

Progressive two-stage or modulating operation

CODE

MODEL

20190698

RS 250/M MZ

Summary of Contents for 20190698

Page 1: ...Installation use and maintenance instructions 20190798 1 07 2021 Forced draught gas burner Progressive two stage or modulating operation CODE MODEL 20190698 RS 250 M MZ GB...

Page 2: ...Translation of the original instructions...

Page 3: ...n 14 4 1 Notes on safety for the installation 14 4 2 Handling 14 4 3 Preliminary checks 14 4 4 Operating position 15 4 5 Opening the burner 15 4 6 Preparing the boiler 15 4 6 1 Boring the boiler plate...

Page 4: ...27 5 6 4 Flame present check 28 5 7 Burner operation 29 5 7 1 Burner start up 29 5 7 2 Steady state operation 29 5 7 3 Ignition failure 29 6 Maintenance 30 6 1 Notes on safety for the maintenance 30 6...

Page 5: ...rried out correctly may cause damage to the machine and or injury to people DANGER DANGER LIVE COMPONENTS This symbol indicates operations which if not carried out correctly lead to electric shocks wi...

Page 6: ...vent of damage to things or injury to people if such damage injury was due to any of the following causes incorrect installation start up use and maintenance of the burner improper incorrect or unreas...

Page 7: ...ance Only those parts envisaged by the manufacturer can be replaced 2 2 Personnel training The user is the person body or company that has acquired the machine and intends to use it for the specific p...

Page 8: ...e of auxiliaries 230 50 220 60 R S 250 M TC FS1 3 400 50 230 50 BASIC DESIGNATION EXTENDED DESIGNATION 3 N 400 V 50 Hz 3 N 380 V 60 Hz 230 V 50 Hz 220 V 60 Hz Heavy oil E Electronic cam EV Electronic...

Page 9: ...ed in EN ISO 3746 3 4 Electrical data Tab C Model RS 250 M MZ Power 1 Max kW Mcal h 1250 2650 1075 2279 Min kW Mcal h 600 516 Fuels Natural gas G20 methane gas G25 Gas pressure at max output 2 Gas G20...

Page 10: ...D 1 Blast tube short long 3 6 Burner equipment Flange for gas train No 1 Gasket for gas train No 1 Flange fixing screws M 10 x 40 No 6 Screws M 16 x 50 to fix the burner flange to the boiler No 4 The...

Page 11: ...those indicated in the diagram consult the manufacturer The firing rates were obtained in special test boilers according to EN 676 standard In Fig 3 you can see the diameter and length of the test co...

Page 12: ...he boiler due to the flue draught which draws air from the fan suction inlet 7 Extensions for slide bars 10 8 Electrical control box with lockout pilot light and reset button 9 Flame inspection window...

Page 13: ...3 Switch for automatic manual off operation a button for output increase decrease 4 Main terminal supply board 5 Cable grommets for electrical wiring to be carried out by the installer 6 Minimum air...

Page 14: ...he development of conden sate and humidity Otherwise before switching on again make sure that the entire control box is perfectly dry Static charges must be avoided since they can damage the control b...

Page 15: ...notes Check the relevant national safety standards are respected When assembling the servomotor and connecting the damper the gears can be disengaged by means of a lever allowing the drive shaft to be...

Page 16: ...ANGER The combustion air inside the boiler must be free from hazardous mixes e g chloride fluoride halogen if present it is highly recommended to carry out cleaning and maintenance more frequently ATT...

Page 17: ...not compromise the extraction of the blast tube For boilers with water cooled front piece the refractory protection 13 14 Fig 11 is not necessary unless specifically requested by the boiler manufactu...

Page 18: ...f a phase is missing For calibration 2 see the table in the wiring diagram To reset in case of an intervention of the thermal relay press the RESET button 1 of Fig 13 The red TEST button 3 opens the N...

Page 19: ...part 2 Fig 15 of the head and then calibrate them ATTENTION Check that the probe and the electrode are placed as in Fig 16 according to the dimensions indicated ATTENTION Do not rotate the probe but...

Page 20: ...s 1 and 2 Fig 17 supplied as standard by removing the inner tube 3 Fig 17 If the mains gas pressure is low the head can be left in standard configuration limiting the modulation minimum to 450 Mcal h...

Page 21: ...ews 2 on slide bars 3 Fix the burner to the pipe coupling with screws 1 Fig 19 Reconnect the articulated coupling 7 to the graduated sector 6 Fig 19 ATTENTION When fitting the burner on the two slide...

Page 22: ...rol devices are compulsory for burners with maximum outputs over 1200 kW 9 Gasket for flanged versions only 10 Pressure adjuster 11 Train burner adaptor supplied separately P2 Pressure upstream of val...

Page 23: ...NCV 8 13 kWh Sm3 7 0 Mcal Sm3 DANGER Disconnect the power supply using the system main switch Check that there are no gas leaks Pay attention when handling the train danger of crushing of limbs Make...

Page 24: ...at test point 1 Fig 25 11 8 mbar Pressure in combustion chamber 3 0 mbar 11 8 3 0 8 8 mbar A pressure of 8 8 mbar column 1 corresponds in the table Tab G to an output of 1700 kW This value serves as a...

Page 25: ...m checks of its own start up efficiency Normally burner stopping is guaranteed by the boiler s thermostat pres sure switch If this is not the case a time switch should be fitted in series to TL to sto...

Page 26: ...ng through 5 3 Servomotor adjustment The servomotor provides simultaneous adjustment of the air damper by means of the variable profile cam and the gas butterfly valve The servomotor rotates by 130 in...

Page 27: ...eration output Example MAX operation output of 600 kW Ignition output must be equal to or lower than 300 kW with ts 2 s 200 kW with ts 3 s In order to measure the ignition output disconnect the plug s...

Page 28: ...and finally bring the servomotor to the position of MIN output with the Output reduction key To adjust cam III Fig 31 5 5 5 Intermediate outputs Adjustment of gas delivery No adjustment is required Ai...

Page 29: ...rement read on the gauge when the burner is working at maximum output After making the adjustment remove the pressure gauge and close the tap 5 6 3 Minimum gas pressure switch The purpose of the minim...

Page 30: ...The minimum current for plant operation is 6 A The burner provides a much higher current so that controls are not normally required However if it is necessary to measure the ionisation current disconn...

Page 31: ...essure or temperature in the boiler point C The electric control box carries on checking the presence of the flame and the correct position of the air and gas maximum pressure switches If the temperat...

Page 32: ...3 Checking and cleaning Servomotor Release cam Fig 30 on page 26 from the servomotor by pressing and shifting button Fig 31 on page 26 to the right Manually rotate it backwards and forwards to make su...

Page 33: ...ications in Tab H Tab H 6 2 4 Safety components The safety components should be replaced at the end of their life cycle indicated in the following table Tab I EN 676 Air excess Max output 1 2 Min outp...

Page 34: ...not switch on and the lock out appears Air pressure switch in operating position Adjust or replace The burner switches on but then stops in lockout Air pressure switch does not switch owing to lack o...

Page 35: ...ace The burner continues to repeat the start up cy cle without lockout The gas pressure in the gas mains lies very close to the value to which the gas pressure switch has been set The sudden drop in p...

Page 36: ...nections exceeds 20 metres a protection kit is available as an interface between the control box and the burner Gas trains in compliance with EN 676 Please refer to manual A Appendix Accessories Param...

Page 37: ...Electrical panel layout Contents 2 Indication of references 3 Functional layout RMG M 4 Functional layout RMG M 5 Electrical wiring that is the responsibility of the installer 6 Functional layout RWF...

Page 38: ...9 0 0 0 0 0 2 8 8 2 2 2 0 9 2 9 9 9 8 9 0 9 2 9 9 9 0 8 8 8 9 8 8 9 90 9 9 9 9 0 0 0 0 0 9 8 0 0 A 2 0 2 2 B 9 2 2 9 0 1 9 0 0 1 2 0 1 0 9 0 9 0 9 0 C 2 2 C 2 3 42 C 42 D 2 2 C 2 12 22 2 E 1 C 21 2 C...

Page 39: ...37 20190798 GB Appendix Electrical panel layout 0 0 0 1 2 3422 506 4 701 1 7 1 6 4 0 805 0 41 34 3 4 1 7 1 4 9 1 7 1 1 0 805 1 2 140 93 2 9 0 0 A B B B C B D B B B B B B B B B B C B...

Page 40: ...20190798 38 GB Appendix Electrical panel layout 0 0 1 1 2 34 5 6 7 8 5 1 9 7 6 8 7 7 7 7 6 6 0 1 0...

Page 41: ...0 9 8 8 8 4 7 2 3 0 1 2 3 4 6 7 7 2 3 7 2 3 2 3 7 7 7 2 3 7 7 7 4 4 4 2 3 4 2 3 7 7 2 3 7 7 7 7 7 A 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 5 5 5 5 2 3 5 5 2 3 5 5 2 3 7 84 1 41 8 8 84 4 8 B...

Page 42: ...ockout signal IN Burner manual stop electric switch ION Ionisation probe K1 Clean contacts output relay burner ON K2 Clean contacts output relay burner lockout KM Fan motor contactor MV Fan motor PA A...

Page 43: ......

Page 44: ...p A I 37045 Legnago VR Tel 39 0442 630111 http www riello it http www riello com Manufacturing site Riello Heating Equipment Shanghai CO LTD No 388 Jinbai Road Jinshan Industrial Zone 201506 Shanghai...

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