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Unigas P75A Manual Of Installation - Use - Maintenance Download Page 21

PART II: INSTALLATION

21

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.

Key

              

    

 

Gas train with valves group MB-DLE (2  gas pressure governor) 

 Gas train with valves group VGD with built-in gas pressure governor

Gas train with valves group MB-DLE (2 gas  pressure governor) +  VPS504 gas proving system

 Gas train with valves group VGD with built-in gas pressure go gas proving system VPS504 

1

Filter (*optional)

6

Butterfly valve

2

Pressure switch - PGMIN

8

Main burner

3

Safety valve with built in gas governor 9

Manual 

valve(*optional)

4

Proving system (*if provided)

10

Bellows unit(*optional)

5

Pressure switch PGMAX:included MBE, for VGD e MB-DLE Optional

GAS INLET

BY BURNER CONSTRUCTOR

BY OTHERS

GAS INLET

SUPPLIED BY BURNER 

BY OTHERS

GAS INLET

BY BURNER CONSTRUCTOR

BY OTHERS

GAS INLET

SUPPLIED BY BURNER 
CONSTRUCTOR

BY OTHERS

Summary of Contents for P75A

Page 1: ...M039277CF Rel 0 0 10 2019 BURNERS BRUCIATORI BRULERS BRENNER QUEMADORES GAS BURNERS MANUAL OF INSTALLATION USE MAINTENANCE P75A P75R R75A R75R RX75 RX75S RX75R...

Page 2: ...e employed exclusively for the use for which it was designed Before connecting the burner make sure that the unit rating is the same as delivery mains electricity gas oil or other fuel Observe caution...

Page 3: ...gaseous fuels 2014 35 UE Low Tension Directive 2014 30 UE Electromagnetic compatibility Directive 2006 42 EC Machinery Directive Harmonized standards UNI EN 676 Automatic forced draught burners for ga...

Page 4: ...s oil and solid fuel burning appliances having electrical connections UNI EN ISO 12100 2010 Safety of machinery General principles for design Risk assessment and risk reduction National Standard UNI 7...

Page 5: ...its The electric actuator that moves proportionally the air damper and the gas butterfly valve uses an adjusting cam with variable shape This one allows the optimisation of the gas flue values as to g...

Page 6: ...e versions PR Progressive MD Fully modulating AB Double stage 4 BLAST TUBE S Standard L Extended 5 DESTINATION COUNTRY see data plate 6 BURNER VERSION A Standard Y Special 7 EQUIPMENT 0 2 gas valves 1...

Page 7: ...3 EN676 BURNER TYPE R75R M R75A M R75A L Output min max kW 320 1650 320 2050 320 2050 Fuel Natural gas Natural gas LPG Category see next paragraph I3B P Gas flow rate min max Stm3 h 34 175 34 217 34 7...

Page 8: ...h Dungs MBDLE 500 mbar with Siemens VGD or Dungs MultiBloc MBE Minimum gas pressure see gas curves Note3 Burners are suitable only for indoor operation with a maximum relative humidity of 80 GAS CAT C...

Page 9: ...42 526 608 210 155 65 69 1362 1428 372 400 500 928 352 1162 800 362 259 280 233 300 453 M10 330 216 250 233 562 130 432 593 292 608 210 155 80 69 1362 1428 372 400 500 928 352 1136 774 362 259 280 233...

Page 10: ...334 234 264 287 300 420 M10 330 216 250 233 558 130 428 565 310 575 210 155 P75R PR MD 1 40 40 69 1216 1326 354 385 495 831 330 1050 716 334 234 264 233 300 420 M10 330 216 250 233 457 130 327 541 57...

Page 11: ...385 495 928 350 1136 774 362 234 264 233 300 420 M10 330 216 250 233 558 130 428 565 292 575 210 155 R75A 50 69 1431 403 503 928 350 1013 651 362 254 270 233 300 453 M10 330 216 250 233 472 130 342 5...

Page 12: ...ailable gas pressure value upstream the burner s gas valve Then subtract the backpressure The result is called pgas Draw a vertical line matching the furnace input value 600kW in the example quoted on...

Page 13: ...mum output point is usually reached by adjsuting the combustion head to its MAX position see paragraph Adjusting the combustion head the minimum output point is reached setting the combustion head to...

Page 14: ...PRESSURE IN THE NETWORK mbar R75R P75R Gas rate Stm3 h R75A P75A Gas rate Stm3 h ATTENTION the gas rate value is quoted on the x axis the related network pressure is quoted on the y axis pressure valu...

Page 15: ...ressure outlet on the butterfly valve 4 Differential pressure gauge Measuring gas pressure in the combustion head In order to measure the pressure in the combustion head insert the pressure gauge prob...

Page 16: ...GAS RATE MUST BE READ AT THE GAS FLOW METER WHEN IT IS NOT POSSIBLE THE USER CAN REFERS TO THE PRESSURE RATE CURVES AS GENERAL INFORMATION ONLY Curves are referred to pressure 0 mbar in the combustion...

Page 17: ...PART I SPECIFICATIONS 17 Pressure rate in combustion head curves LPG Curves are referred to pressure 0mbar in the combustion chamber R75A L P75A L Stm3 h...

Page 18: ...y cement ATTENTION The equipment must be installed in compliance with the regulations in force following the manufac turer s instructions by qualified personnel All handling operations must be carried...

Page 19: ...manufacturer To choose the blast tube lenght follow the instructions of the boiler manufacturer In absence of these consider the following Cast iron boilers three pass flue boilers with the first pass...

Page 20: ...gas trai included in the delivery and which must be fit ted by the installer The diagrams are in compliance with the current laws Procedure to install the double gas valve unit two 2 gas flanges are...

Page 21: ...LE 2 valves gas filter pressure governor VPS504 gas proving system Gas train with valves group VGD with built in gas pressure governor gas proving system VPS504 1 Filter optional 6 Butterfly valve 2 P...

Page 22: ...functional test 5 disassembly in reverse order 2 MULTIBLOC DUNGS MB DLE 415 420 Mounting 1 Loosen screws A and B do not unscrew Fig 11 Fig 12 2 unscrew screws C and D Fig 11 Fig 12 3 Remove MultiBloc...

Page 23: ...aneous material drops inside the valves during maintenance and cleaning operation of the filters both the filters outside the valves group and the ones built in the gas valves WARNING Slowly open the...

Page 24: ...ncludes a vent limiter according to UL 353 and ANSI Z21 18 CSA 6 3 No venting required in locations where vent limiters are accep ted by the jurisdiction 4 Only PS pressure sensors specified by DUNGS...

Page 25: ...rmally installed upstream from all the control and on off devices Once the train is installed connect the gas valves group and pressure switches plugs Caution the SKP2 diaphragm D must be vertical see...

Page 26: ...out as soon as the boiler thermostat gives a start signal to the burner creates by means of the diaphragm pump inside it a pressure in the test space of 20 mbar higher than the supply pressure When wi...

Page 27: ...RC circuit Siemens between the terminal 2 terminal X3 04 4 in case of LMV2x LMV3x LMV5x LME7x of the base and the earth terminal RC466890660 For LMV5 control box please refer to the clabeling recommen...

Page 28: ...cycle of the gas proving system starts the end of this check is signalled by the light of the lamp on the device When the valves check is finished the startup cycle of the burner begins In the case of...

Page 29: ...increasing too much or that the flues temperature gets too low to cause condensation in the chimney To change the burner setting during the testing in the plant follows the next procedure according to...

Page 30: ...requires PS 10 40 or PS 50 200 Outlet pressure MIN 10 25 50 75 MAX PS 10 40 4 mbar 0 4 kPa 2 w c 10 mbar 1 0 kPa 4 w c 25 mbar 2 5 kPa 10 w c 50 mbar 5 0 kPa 20 w c 75 mbar 7 5 kPa 30 w c 100 mbar 10...

Page 31: ...ckwise rotation reduces start flow rate anticlockwise rotation incre ases it Do not use a screwdriver on the screw VR The pressure stabilizer is adjusted by operating the screw VS located under the co...

Page 32: ...position is factory set as shown in figure A x 10 mm If different settings are required it is possible to change the position loosen the VB screw and slightly move the combustion head backwards turnin...

Page 33: ...which the burner is designed For natural gas burners plate holes are fully opened R75A L Center head holes gas flow regulation To adjust the gas flow partially close the holes as follows 1 loosen the...

Page 34: ...5 Perform leakage and functional test pmax 360 mbar 6 Pay attention that dirt does not fall inside the valve Check the filter at least once a year Change the filter if the pressure difference between...

Page 35: ...MBEMultiBloc VD Mounting position to push 1 Position VD on VB fig 2 3 2 Slide VD forward up to the stop fig 4 3 Screw VD on with 2 M5 screws for each max 5 Nm 44 in lb fig 5 6 4 VD can be mounted rot...

Page 36: ...ing the locking screw VB by a number of turns By unscrewing the regulator RP the valve opens screwing the valve closes The pressure stabilizer is adjusted by operating the screw VS located under the c...

Page 37: ...ignition cam position that is why it must be set at about 30 more than the ignition cam 13 Turn the burner off and then start it up again If the adjustment is not correct repeat the previous steps Be...

Page 38: ...tch the ignition cam position that is why it must be set at about 30 more than the ignition cam 15 Turn the burner off and then start it up again If the adjustment is not correct repeat the previous s...

Page 39: ...ced by 15 Repeat the ignition cycle of the burner and check it runs properly Refit the transparent plastic cover on the pressure switch Calibration of low gas pressure switch As for the gas pressure s...

Page 40: ...E FUEL MANAUL CUTOFF VALVES CLOSED ATTENTION READ CAREFULLY THE WARNINGS CHAPTER AT THE BEGINNIG OF THIS MANUAL DANGER Incorrect motor rotation can seriously damage property and injure people ATTENTIO...

Page 41: ...n 5 Perform leakage and functional test pmax 360 mbar 6 Pay attention that dirt does not fall inside the valve Check the filter at least once a year Change the filter if the pressure difference betwee...

Page 42: ...7 Remove the lid C Unscrew the screws V holding in position the manifold G and pull out the complete group as shown in figure Note for the subsequent assembly carry out the above described operations...

Page 43: ...contact metallic parts blast tube head etc other wise the boiler operation would be compromised Check the electrodes position after any intervention on the combustion head ER EA G M the gap between i...

Page 44: ...ble the burner by fllowing the procedure in the reversed order WIRING DIAGRAMS Refer to the attached wiring diagrams WARNING 1 Electrical supply 230V 400V 50Hz 3N a c 2 Do not reverse phase with neutr...

Page 45: ...echnical diagnosis and if necessary an overall repair The burner status is considered to be at its limit if it is technically impossible to continue using it due to non compliance with safety requirem...

Page 46: ...tch damaged or bad links Check air pressure switch functions and links Burner control damaged Replace burner control BURNER LOCKS OUT WITHOUT ANY GAS FLOW Gas valves don t open Check voltage on valves...

Page 47: ...ART IV MAINTENANCE 47 BURNER EXPLODED VIEW R75A R75R A B C E F A B C E F 10 6 7 6 2 6 7 6 6 7 6 5 2 6 5 4 5 4 3 5 7 15 4 5 4 4 4 2 14 8 1 5 11 4 9 11 2 2 11 2 1 11 2 13 18 12 2 4 2 5 2 1 2 2 2 3 6 5 1...

Page 48: ...8 1 AIR PRESSURE SWITCH 1 1 5 5 PROTECTION 9 SILENCER 1 1 5 6 SWITCH 10 STANDARD BLAST TUBE 1 1 5 7 FUSE 11 1 LEVERAGE 1 2 COVER 11 2 ADJUSTING CAM 1 3 CONTROL BOX 11 2 1 ADJUSTING CAM 2 1 FLANGE 11 2...

Page 49: ...ing time air pressure monitor LP and flame relay FR are tested for correct contact positions t11 Programmed opening time for actuator SA Only with LME22 The air damper opens until the nominal load pos...

Page 50: ...d time for air pressure signal t11 Programmed opening time for actuator SA t12 Programmed closing time for actuator SA SB R W GP AL M LP BV1 Z FS tw t1 t3n TSA t4 7 t10 EK2 12 10 3 7 4 6 1 8 t3 A B B...

Page 51: ...W Limit thermostat pressure switch Z Ignition transformer LME22 connection diagram NT PC control RESET EK FSV ION 1 2 3 M 4 BV1 5 7 Z 10 AL T 12 R W GP STB 9 7101 24 0606 pa 6 LP 8 EK 11 K1 K2 1 K3 K...

Page 52: ...lt status is showed by the red LED inside the LME s lockout reset buttonaccording to the Error code table RESETTING THE BURNER CONTROL When lockout occurs the burner control can immediately be reset b...

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Page 56: ...a 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 an...

Page 57: ...MANUAL FOR OPERATION AND CALIBRATION MODULATOR SIEMENS RWF 40 M12905CH Rev 07 11 09...

Page 58: ...ns given on the burner s wiring diagrams INSTRUMENT FRONTAL PANEL Current value or value of parameter red Setpoint or name of parameter green Decrease value down arrow Programming key Burner start ena...

Page 59: ...sensor set G030 4 C112 and C113 configurations tables 3 4 attached Configurations C112 and C113 enable use of an auxiliary contact terminals Q63 Q64 and LED K6 on the front panel which is fully config...

Page 60: ...manual mode press the EXIT key z NB Every time the controller switches the burner off start enabled LED off Q13 Q14 contact open manual mode is disa bled when the burner is switched back on 7 Instrum...

Page 61: ...from 0 to 9999 sec 350 Typical value for temperature Dead band db from 0 to 999 9 digit 1 Typical value Servocontrol running time tt from 10 to 3000 sec 15 Set servocontrol running time Switch on diff...

Page 62: ...3 external set point 0 10 V 4 external set point 0 1 V 5 analog shift set point WFG 6 analog shift set point 0 20 mA 7 analog shift set point 4 20 mA 8 analog shift set point 0 10 V 9 analog shift set...

Page 63: ...6 lk7 function for input 1 7 lk8 function for input 2 8 lk7 function for input 2 9 lk8 function for input 2 A lk7 function for input 3 b lk8 function for input 3 C Type of instrumentoutput control 3 p...

Page 64: ...ment addresses for RWF 40 003 only address 0 0 address 1 0 1 address address 99 9 9 Unit of measurement and decimal place C without decimal 0 C and 1 decimal 1 F without decimal 2 F and 1 decimal 3 Ac...

Page 65: ...0 80 600kPa Danfoss Siemens 4 20mA p 16 bar F030 0100 0 1600 0 1600 0 80 5 20 80 600kPa Danfoss Siemens 4 20mA p 25 bar F030 0100 0 2500 0 2500 0 125 5 20 80 600kPa Danfoss Siemens 4 20mA p 40 bar F03...

Page 66: ...electric connection With 7 pins connector version With terminals version TRASDUCER PASSIVE CONNECTION ONLY TRASDUCER PASSIVE CONNECTION ONLY TRASDUCER PASSIVE CONNECTION ONLY TRASDUCER PASSIVE CONNECT...

Page 67: ...ith setpoint modified by independent management system C111 configuration code X1X1 C111 configuration code X9XX SCH2 0 5x SPH SPL SCL2 0 5 x SPH SPL Example SPH max 130 C SPL min 30 C SCH2 0 5 x 130...

Page 68: ...ing is of paramount importance It s good to be admired even better to be effective Heating systems the room sensor must not be installed in rooms with heating units complete with thermostatic valves A...

Page 69: ...t by hot air coming from the pipe Bend 0 4m sensor by hand never use tools as illustrated Installing differential pressure sensors for water z Installation with casing facing down not allowed With tem...

Page 70: ...tor on a min 100mm length of pipe Sensors come with straps for pipes up to 100 mm in diameter Placing the probes QAD22 QAE21 QAP21 RCA With pumps on outlet with 3 ways valves with 4 ways valves Panel...

Page 71: ...downstream C Measurement of difference in pressure between two ducts D Measurement of difference in pressure between two rooms or of inside of duct and outside Basic principles Measuring static press...

Page 72: ...560162 Pressure probe Danfoss MBS3200 p 1 6 0 1 6bar segnale 4 20mA 2560189 Pressure probe Danfoss MBS3200 p 10 0 10bar segnale 4 20mA 2560190 Pressure probe Danfoss MBS3200 p 16 0 16bar segnale 4 20m...

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