B U R N E R S BRULEURS B R E N N E R QUEMADORES B R U C I AT O R I

MANUAL OF . INSTALLATION . OPERATING . MAINTENANCE GAS BURNERS TYPE:

P90 P91 P92 P510 P515 P520M03904CB Rev.01 Ed.05/96

PREFACES PART I: PART II: PART III: INSTALLATION OPERATIONS MAINTENANCE APPENDIX

P. 2 P 4 . P 15 . P 17 . P 21 .

1

NOTICESTHIS 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. CAREFULLY KEEP THIS MANUAL FOR FUTURE REFERENCE.

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GENERAL INTRODUCTION * This instruction sheet is supplied as an integral and essential part of the product and must be delivered to the user. Carefully read these instructions, as they supply important information on installation, use, safety and maintenance. The equipment must be installed in compliance with the regulations in force, following the manufacturers instructions, by qualified personnel. Qualified personnel means those having technical knowledge in the field of components for civil heating systems and sanitary hot water generation and, in particular, service centres authorised by the manufacturer. Improper installation may cause injury to people and animals, or damage to property, for which the manufacturer cannot be held liable. * Remove all packaging material and inspect the equipment for integrity. In case of any doubt, do not use the unit - contact the supplier. The packaging materials (wooden crate, nails, fastening devices, plastic bags, foamed polystyrene, etc), should not be left within the reach of children, as they may prove harmful. * Before any cleaning or servicing operation, disconnect the unit from the mains by turning the master switch OFF, and/or through the cut-out devices that are provided. * Make sure that inlet or exhaust grilles are unobstructed. * In case of breakdown and/or defective unit operation, disconnect the unit. Make no attempt to repair the unit or take any direct action. Contact qualified personnel only. Units shall be repaired exclusively by a servicing centre, duly authorised by the manufactureer, with original spare parts. Failure to comply with the above instructions is likely to impair the units safety. To ensure equipment efficiency and proper operation, it is essential that maintenance operations are performed by qualified personnel at regular intervals, following the manufacturers instructions. * When a decision is made to discontinue the use of the equipment, those parts likely to constitute sources of danger shall be made harmless. * In case the equipment is to be sold or transferred to another user, or in case the original user should move and leave the unit behind, make sure that these instructions accompany the equipment at all times,so that they can be consulted by the new owner and/or the installer. * For all the units that have been modified or have options fitted then original accessory equipment only shall be used. * This unit shall be employed exclusively for the use for which it is meant. Any other use shall be considered as improper and, therefore, dangerous. The manufacturer shall not be held liable, by agreement or otherwise, for damages resulting from improper installation and use, and failure to comply with the instructions supplied by the manufacturer. 2. SPECIAL INSTRUCTIONS FOR BURNERS *The burner should be installed in a suitable room, with ventilation openings complying with the requirements of the regulations in force, and sufficient for good combustion. * Only burners designed according to the regulations in force should be used. * This burner should be 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 gasoil, or other fuel). *Observe caution with hot burner components. These, are usually near to the flame and the fuel pre-heating system, if any become hot during the unit operation they will remain hot for some time after the burner has stopped. * When the decision is made to discontinue the use of the burner, the user shall have qualified personnel carry out the following operations: a) remove the power supply by disconnecting the power cable from the master b) disconnect the fuel supply by means of the hand-operated shut-off valve and remove the control handwheels from their spindles. SPECIAL WARNINGS * Make sure that the burner has, on installation, been firmly secured to the appliance, so that the flame is generated inside the appliance firebox. * Before the burner is started and, thereafter, at least once a year, have qualified personnel perform the following operations: a) Set the burner fuel flow rate depending on the heat input of the appliance. b) Set the flow rate of the combustion-supporting air to obtain a combustion efficiency level at least equal to the lower level required by the regulations in force. c) Check the unit operation for proper combustion, to avoid any harmful or polluting unburnt gases in excess of the limits permitted by the regulations in force. d) Make sure that control and safety devices are operating properly. e) Make sure that exhaust ducts intended to discharge the products of combustion are operating properly. f) On completion of setting and adjustment operations, make sure that all mechanical locking devices of controls have been duly tightened. g) Make sure that a copy of the burner use and maintenance instructions is available in the boiler room. * In case of repeated burner shut-downs, do not continue re-setting the unit manually. Contact qualified personnel to take care of such defects. * The unit shall be operated and serviced by qualified personnel only, in compliance with the regulations in force. 3. GENERAL INSTRUCTIONS DEPENDING ON FUEL USED

3A ELECTRICAL CONNECTION * For safety reasons the unit must be efficiently earthed and installed as required by current safety regulations. * It is vital that all saftey requirements are met. In case of any doubt, ask for an accurate inspection of electrics by qualified personnel, since the manufacturer cannot be held liable for damages that may be caused by failure to correctly earth the equipment. * Qualified personnel must inspect the system to make sure that it is adequate

2

PREFACES

to take the maximum power used by the equipment shown on the equipment rating plate. In particular, make sure that the system cable cross section is adequate for the power absorbed by the unit. * No adaptors, multiple outlet sockets and/or extension cables are permitted to connect the unit to the electric mains. An omnipolar switch shall be provided for connection to mains, as required by the current safety regulations. The use of any power-operated component implies observance of a few basic rules, for example: - do not touch the unit with wet or damp parts of the body and/or with bare feet; - do not pull electric cables; - do not leave the equipment exposed to weather (rain, sun, etc.) unless expressly required to do so; - do not allow children or inexperienced persons to use equipment; * The unit input cable shall not be replaced by the user. In case of damage to the cable, switch off the unit and contact qualified personnel to replace. * When the unit is out of use for some time the electric switch supplying all the power-driven components in the system (i.e. pumps, burner, etc.) should be switched off. 3B FIRING WITH GAS, GASOIL OR OTHER FUELS GENERAL * The burner shall be installed by qualified personnel and in compiance with regulations and provisions in force; wrong installation can cause injuries to people and animals, or damage to property, for which the manufacturer cannot be held liable. * Before installation, it is recommended that all the fuel supply system pipes be carefully cleaned inside, to remove foreign matter that might impair the burner operation. * Before the burner is commissioned, qualified personnel should inspect the following: a) the fuel supply system, for proper sealing and pressure soundness; b) the fuel flow rate, to make sure that it has been set based on the firing rate required of the burner; c) the burner firing system, to make sure that it is supplied for the designed fuel type; d) the fuel supply pressure, to make sure that it is included in the range shown on the rating plate; e) the fuel supply system, to make sure that the system dimensions are adequate to the burner firing rate, and that the system is equippped with all the safety and control devices required by the regulations in force. * When the burner is to remain idle for some time, the fuel supply tap or taps should be closed. SPECIAL INSTRUCTIONS FOR USING GAS * Have qualified personnel inspect the installation to ensure that: a) the gas delivery line and train are in compliance with the regulations and provisions in force; b) all gas connections are tight; c) the boiler room ventilation openings are such that they ensure the air supply flow required by the currrent regulations, and in any case are sufficient for proper combustion. * Do not use gas pipes to earth electrical equipment. * Never leave the burner connected when not in use. Always close the gas valve. * In case of prolonged absence of the user, the main gas delivery valve to the burner should be closed.

Precautions if you can smell gas: a) do not operate electric switches, the telephone, or any other item likely to generate sparks; b) immediately open doors and windows to create an air flow to purge the room; c) close the gas valves; d) contact qualified personnel. * Do not obstruct the ventilation openings of the room where gas appliances are installed, to avoid dangerous conditions such as the development of toxic or explosive mixtures.

PREFACES

3

PART 1: INSTALLATION MANUALTECHNICAL DATA

BURNER TYPE Input min. low fire kW min.high fire kW max. high fire kW min. low fire kcal/h min. high fire kcal/h max. high fire kcal/h

P90

P91

P92

Fuel Category Gas flow rate min - max (St m3/h) Electric supply Electric comsuption kW Fan motor (2800 rpm) kW Protection Approx weight kg Control available Destination Gas train 50 Size Connection Pressure (min.-max.) mbar Gas train 65 Size Connection Pressure (min.-max.) mbar Gas train 80 Size Connection Pressure (min.-max.) mbar Gas train 100 Size Connection Pressure (min.-max.) mbar

370 480 480 600 810 810 1.770 2.500 2.800 318.200 412.800 412.800 516.000 696.600 696.600 1.522.200 2.150.000 2.408.000 Natural Gas Natural Gas Natural Gas I2H I2H I2H 39 - 187 51 - 265 51 - 296 230/400 V - 50 Hz 230/400 V - 50 Hz 230/400 V - 50 Hz 3.5 4.5 6 3 4 5.5 IP40 IP40 IP40 195 205 225 PR - MD PR - MD PR - MD Italy Italy Italy 50 Rp 2 70 - 500 65 DN65 40 - 200 80 DN80 30 - 200 100 DN100 23 - 200 50 Rp2 115 - 500 65 DN65 60 - 200 80 DN80 40 - 200 100 DN100 28 - 200 50 Rp2 145 - 500 65 DN65 80 - 200 80 DN80 60 - 200 100 DN100 45 - 200

Note: all gas flow rates (Stm3/h) are referred to standard gas conditions: 1013 mbar pressure, 15 C temperature. Flow rates are referred to G20 natural gas ( nett calorific value: 34.02 MJ/Stm3), if G25 is used (n.c.v.: 29.25 MJ/Stm3) flow rates must be multiplied by 1.16 factor.

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BURNER TYPE Input min. low fire kW min.high fire kW max. high fire kW min. low fire kcal/h min. high fire kcal/h max. high fire kcal/h

P510

P515

P520

Fuel Category Gasas flow rate min - max (St m3/h) Electric supply Electric comsuption kW Fan motor (2800 rpm) kW Protection Approx weight kg Control available Destination Gas train 50 Size Connection Pressure (min.-max.) mbar Gas train 65 Size Connection Pressure (min.-max.) mbar Gas train 80 Size Connection Pressure (min.-max.) mbar Gas train 100 Size Connection Pressure (min.-max.) mbar

600 770 1.000 1.500 1.600 1.700 5.000 5.500 6.500 516.000 662.200 860.000 1.290.000 1.376.000 1.462.000 4.300.000 4.730.000 5.590.000 Natural Gas Natural Gas Natural Gas I2H I2H I2H 63 - 529 81 - 582 106 - 688 230/400 V - 50 Hz 230/400 V - 50 Hz 230/400 V - 50 Hz 8 11.5 15.5 7.5 11 15 IP40 IP40 IP40 410 425 440 PR - MD PR - MD PR - MD Italy Italy Italy 50 Rp 2 300 - 500 65 DN65 180 - 200 80 DN80 110 - 200 100 DN100 60 - 200 50 Rp2 350 - 500 65 DN65 190 - 200 80 DN80 110 - 200 100 DN100 60 - 200 50 Rp2 480 - 500 65 DN65 250 - 500 80 DN80 150 - 200 100 DN100 80 - 200

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BURNER MODEL IDENTIFICATION Burners are identified by burner type and model. Burner model identification is described here following.

Type: P90

(2)

(3)

(4)

(5)

(6)

(7)

(8)

6

INSTALLATION MANUAL

OVERALL DIMENSIONS IN mm

w(BURNTYPE)]TJ

NTING DIMENSIONS Fig. 1 BOILER PLATE

PERFORMANCE CURVES

14

P9012 10FIRING RESISTANCE IN C.D.C. mbar

8Fig. 2

6 4 2 0 0 400 800 1200 1600 2000INPUT kW

16

P9114FIRING RESISTANCE IN C.D.C. mbar

12 10Fig. 3

8 6 4 2 0 0 400 800 1200 1600 2000 2400 2800

INPUT kWC.D.C. = COMBUSTION CHAMBER = Minimum high fireINSTALLATION MANUAL 7

16

P9214 12FIRING RESISTANCE IN C.D.C. mbar

10 8 6 4 2 0 0 400 800 1200 1600 2000 2400 2800 3200Fig. 4

INPUT kW

20 18 16FIRING RESISTANCE IN C.D.C. mbar

P510

14 12Fig. 5

10 8 6 4 2 0 0 1000 2000 3000 4000 5000 6000

C.D.C. = COMBUSTION CHAMBER = Minimum high fire8 INSTALLATION MANUAL

INPUT kW

20

P51518 16 14FIRING RESISTANCE IN C.D.C. mbar

12 10 8 6 4 2 0 0 1000 2000 3000 4000 5000 6000INPUT kWFig. 6

20 18 16FIRING RESISTANCE IN C.D.C. mbar

P520

14 12Fig. 7

10 8 6 4 2 0 0 1000 2000 3000 4000 5000 6000 7000 8000

C.D.C. = COMBUSTION CHAMBER = Minimum high fireINSTALLATION MANUAL

INPUT kW

9

MOUNTINGS AND CONNECTIONS

Packing The burners are despatched in wodden crates of dimensions: Type P90 1200-1650-860 mm (lh.x wdth.x ht.) Type P520 1350-1650-970 mm (lh.x wdth.x ht.) Packing cases of this type are affected by humidity and are not suitable for stacking. The following are placed in each packing case: 1 burner with gas train which is detached but already connected to the burner electrically ; 1 gasket made of asbestos-free material to be inserted between the burner and the boiler; 1 set of the following documents: this manual, the Guarantee Certificate and the test certificate. To get rid of the burners packing and in the event of scrapping of the latter, follow the procedures laid down by current laws on disposal of materials

Fitting burner to boiler After fitting the burner to the boiler see that the space between the blast tube and the refractory lining is sealed with appropriate insulating material (ceramic fibre cord or refractory cement).

Legend 1) Burner 2) Fixing nut 3) Washer 4) Seal 5) Stud bolt 6) Sightglass cleaning tube 7) Blast tube

Fig. 8

Electrical connection diagram - Remove the cover of the electrical panel beside the burner. - Effect the electrical connections to the supply terminal board as per the scheme in fig. 9, check the direction of rotation of the fan motor (see note at end of page) and refit the panel cover. WARNING: The burner is fitted with an electrical bridge between terminals 6 and 7, in the event of connecting the high/low flame thermostat remove this bridge before connecting the thermostat. IMPORTANT: In connecting electric supply wires to burner teminal block be sure that ground wire should be longer than phase and neutral ones. Legend: see page 19. Burner PR version supply terminal block Burner MD version supply terminal block

Fig. 9

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. Rotation of fan motor After completing the electrical connection of the burner, remember to check the rotation of the fan motor. The motor should rotate in an anti-clockwise direction looking at cooling fan of the motor. In the event of incorrect rotation reverse the three-phase supply and recheck the rotation of the motor. NOTE. the burners are supplied for three-phase 400 V supply, and in the case of three-phase 230 V supply it is necessary to modify the electrical connections inside the terminal box of the electric motor and replace the thermal overload relay.10 INSTALLATION MANUAL

Gas train installation diagrams In fig. 10-11 they are shown all the components of the gas train included in the supply and those which must be fitted by the installer. The scheme shown satisfy the current provisions of the law .

SUPPLIER LEGEND

INSTALLER

1) Burner 2) Gas twin valve (including gas pressure switch) 3) Leak detection monitor 4) Gas governor and filter 5) Manually Operated Shutt-off Valve Size: see technical data - gas connection

1

2

3

4

5

Fig. 10

SUPPLIER

INSTALLER

LEGEND

1

2

3

5

1) 2) 3) 4) 5)

Burner Gas valve (including gas governor) Gas valve Minimum gas pressure switch Manually Operated Shutt-off Valve Size: see technical data - gas connection

Fig. 11

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ADJUSTMENT

C - RP

T

Double valve Dungs DMVDLE It is a single body valve assembly includung two class A electric gas valves. One of them is slow opening type. The valve assembly can be coupled with leakage control Dungs mod. VPS504 or with a normally open valve. To set gas flow rate use screw RP, under cover C. Clockwise rotation reduces flow rate, counter clock wise rotation increases it. To set slow opening remove cover T, reverse upside down and use it as a tool to rotate screw WR. Clockwise rotation reduces start flow rate, counter clockwise rotation increase it.

Fig. 12

MVD gas valve To adjust the gas flow unscrew the plug T, slacken the lock nut and apply a screwdriver to the adjusting screw VR. By turning in the clockwise direction the flow is reduced and by turning in the anticlockwise direction it is increased. When this operation has been completed lock the lock nut and screw down the plug T. To replace the coil remove the plug T, withdraw the coil B and after replacing the coil refit the plug T.

Fig. 13

INSTALLATION MANUAL

11

LANDIS gas valve Version with SPK10: no adjustment necessary. - Important: Do not remove the cover as oil may leak out. Version with SKP20: (with built in pressure stabiliser). - To increase or decrease gas pressure, and therefore gas flow, remove the cap and use a screwdriver to adjust the regulator screw VR. Turn clockwise to increase the flow, anti-clockwise to reduce it. - Connect up the gas tubing to the gas pressure nipple (TP in Fig.14). - Leave the breather free (SA in Fig.14). - Should the spring that is fitted not permit satisfactory regulation, ask one of our service centres for a suitable replacement.

SA TP

VR

Fig. 14

ELEKTROGAS valve (only DN100) To regulate the throughput of gas, remove the cap "T" and remove the screw "VB" , using a hexagon wrench. Adjust "RP" to give the desired flow. On conpletion, replace "VB" and "T".

Fig. 15 Dungs valve leakage monitor device VPS504 The VPS504 check the operation of the seal of the gas shut off valves costituting the DMV-DLE. This check, carried 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 20 mbar higher than the supply pressure. When wishing to monitor the test, install a pressure gauge ranged to that of the pressure supply, point Pa. If the test cycle is satisfactory after a few seconds the consent light LC (yellow) In comes on. In the opposite case the lockout light LB (red) comes on. To restart it is necessary to reset the appliance by pressing the lamp/button LB.

LC

LB

Fig. 16

PE

PA

Pressure Governor To increase the gas pressure on outlet, adjust with a screwdriver screw TR as indicated in figure 17.

TR

Fig. 1712 INSTALLATION MANUAL

ADJUSTMENT OF GAS AND AIR FLOW RATE NOTA BENE: During commissioning operations, do not to let the burner function with insufficient air flow (danger of formation of carbon monoxide); if this should happen, shut down the burner, increase the opening of the air damper and start up the burner again to ensure the purging of the carbon monoxide from the combustion chamber. Important: Adjusting the air flow refer to the following values: if G20 natural gas is used: minimum CO2 value for high fire: 9.75 %, minimum CO2 value for low fire: 9 %. if G25 natural gas is used: minimum CO2 value for high fire: 9.58 %, minimum CO2 value for low fire: 8.85 %. During testing in the facory the gas butterfly valve, air damper and low flame are set to average valuesusing the cams of the servocontrol. To recalibrate the burner at the time of on-site testing, employ the following procedure.

1. Light the burner and keep the servo-control in the ignition position by using the AUTO-MAN on the servo-control switch (ignition position = 0). 2. To regulate the ignition air flow move the servo-control cam AB (see fig.18) (to increase air flow increase servo- control position angle). To regulate the ignition gas flow turn the adjustable screws V (see fig. 20) to change the opening of the butterfly valve (see Fig.19). Turn clockwise to increase the gas flow and anti-clockwise to reduce it. 3. Switch off the burner, put the AUTO-MAN servo-control switch in AUTO position and start the burner again. If the setting is correct proceed to point 4, on the contrary correct it again. 4. With the servo-control switch in MAN position turn the servocontrol up to high flame (servo-control position = 90). IMPORTANT NOTICE: move the servocontrol by hand slowly, taking care to combustion values in order to be sure not to let the burner function with insufficient air flow. Regulate the gas flow to the required figure by adjusting the pressure stabilizer or the regulator valve (see page 10). To adjust the air flow rate slacken the screw RA and rotate the screw VRA (CW rotation increases air flow, while CCW rotation decreases it) until the desired flow rate is obtained. (fig. 20). 5. Turn the burner down to low flame, to regulate the gas flow act on the adjustable screws V as described at point 2. 6. Should it be necessary to adjust burner capacity at low flame move the servocontrol cam BF accordingly (see Fig.18). The low-flame position should never coincide with the ignition position, so for this reason the cam has be calibrated at least 5 off the ignition position. 7. Put the AUTO-MAN servo-control switch in AUTO position and check burner starting again, if gas or air flow need further adjustment proceed as described at point 2. N.B. On final adjustment, make sure the locking screws RA is fully tightened. V

BF

AB

Fig.18

Fig. 19

VRA

RA

VRAINSTALLATION MANUAL

Fig. 2013

Calibration of air pressure switch Calibration is carried out as follows: Remove the transparent plastic cap. After air and gas setting has been completed , start the burner and, while prepurge phase is running, slowly turn the adjusting ring nut VR in the clockwise direction until the burner lockout . Read the value on the pressure switch scale and reduce it by 15%. Repeat the ignition cycle of the burner and check it runs properly. Refit the cover on the pressure switch.

Calibration of minimum gas pressure switch The minimum gas pressure switch is fitted to the first gas valve. Calibrations is carried out as followes: Remove the transparent plastic cover . With the burner in operation measure the pressure on the pressure port on pressure switch and close the shut off valve (n 4 in installation diagram) slowly until the detected pressure is reduced by 50%. Verify CO emissions of the burner, if the measured value is smaller than 80 ppm screw down the adjusting ring nut until the burner is turned off (on the Elbi pressure siwtch undo screw VB). If CO emissions are greater than 80 ppm slightly open the shut off valve until the CO value is reduced below 80 ppm, then screw down the adjusting ring nut until the burner is turned off. Fully open the valve n 4. Refit the cover on the pressure switch (on Elbi pressure switch remember to tighten screw VB).

Fig. 21

Calibrating the high gas pressure switch (Optional) The high gas pressure switch is fitted on the burner in close to the butterfly valve and is connected by copper tube. For calibration proceed as follows: Remove the transparent plastic cover Bring the burner to maximum output Rotate the adjustment ring nut VR clockwise, until the burner stops (on the Elbi pressure siwtch undo screw VB). Rotate the adjustment ring nut slightly back (increase the value indicated on the scale nut after rotation by 30 % ). In the event of stoppage rotate the adjustment ring nut slightly further back. Refit the cover (on Elbi pressure switch remember to tighten screw VB)

Fig. 22

Adjustment of combustion head The burner is adjusted in the factory with the head in the position MAX, corresponding to maximum output. When operating at reduced power progressively move the combustion head to the positions indicated in the table following

VB

MAX

VRT

Fig. 23

MIN

14

INSTALLATION MANUAL

PART II: OPERATIONS MANUAL

LIMITATIONS OF USE THE BURNER IS AN APPLIANCE DESIGNED AND CONSTRUCTED TO OPERATE ONLY AFTER BEING CORRECTLY CONNECTED TO A HEAT GENERATOR (E.G. BOILER, HOT AIR GENERATOR, FURNACE, ETC.), ANY OTHER USE IS TO BE CONSIDERED IMPROPER AND THEREFORE DANGEROUS. THE USER MUST GUARANTEE THE CORRECT FITTING OF THE APPLIANCE, ENTRUSTING THE INSTALLATION OF IT TO QUALIFIED PERSONNEL AND HAVING THE FIRST COMMISSIONING OF IT CARRIED OUT BY A SERVICE CENTRE AUTHORISED BY THE COMPANY MANUFACTURING THE BURNER. A FUNDAMENTAL FACTOR IN THIS RESPECT IS THE ELECTRICAL CONNECTION TO THE GENERATORS CONTROL AND SAFETY UNITS (CONTROL THERMOSTAT, SAFETY, ETC.) WHICH GUARANTEES CORRECT AND SAFE FUNCTIONING OF THE BURNER. THEREFORE ANY OPERATION OF THE APPLIANCE MUST BE PREVENTED WHICH DEPARTS FROM THE INSTALLATION OPERATIONS OR WHICH HAPPENS AFTER TOTAL OR PARTIAL TAMPERING WITH THESE (E.G. DISCONNECTION, EVEN PARTIAL, OF THE ELECTRICAL LEADS, OPENING THE GENERATOR DOOR, DISMANTLING OF PART OF THE BURNER). DO NOT EVER OPEN OR DISMANTLE ANY COMPONENT OF THE MACHINE.

OPERATIONS MANUAL

15

FUNCTIONING BURNERS WITH PROGRESSIVE OPERATION (M-.PR... MODELS)Turn switch A on the burner control panel to position 1. Check that the mechanism is not blocked (LED B on), and if necessary unblock by pressing the reset button C. Check that the thermostat (or pressostat) series gives the all clear for operating the burner. Check that the pressure in the mains gas supply is above the minimum level (LED E on). The ventilator starts up, the pre-soak phase begins and, at the same time the test cycle is started for the gas valve gastight monitor. Where there is a leak from the gas valve the gas-tight monitor blocks and the warning light on the VPS504 comes on. To release press the reset button D on the burner panel. Since maximum air supply is required for the pre-purge phase the control system brings into play the aperture servocontrol, and maximum aperture must be reached before starting to count the time period of 36 seconds for the preventilation phase. At the end of the pre-ventilation phase the servo control moves to the fully-closed position (ignition position) and, as soon as this happens, the ignition transformer comes on (LED I lights up on the indicator panel). 2 seconds after the opening of the gas valve the ignition transformer cuts out and the LED goes out. The burner is now lit, while at the same time the servo control moves to the high flame position, and after 14 seconds goes into its 2-stage operating mode with the burner switching automatically to high or low flame as the system commands. Operation in high or low flame is signalled by the lighting up/extinguishing of the indicator light F on the mimic panel.

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ML

16

A

PART III: MAINTENANCE MANUAL

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. N.B. All operations on the burner must be carried out with the power disconnected

PERIODIC OPERATIONS - Cleaning and examining the gas filter cartridge, if necessary replace it; - Removal, examination and cleaning of the combustion head (see fig. 25) - Examination of ignition electrodes, cleaning, possible adjustment and, if necessary, replacement (see fig. 26); - Examination of detection electrode, cleaning, possible adjustment and, if necessary, replacement (see fig. 26). In the event of doubt check the detection circuit after putting the burner back into operation, as per the diagram in fig.27; - Cleaning and greasing of sliding and rotating parts NOTE: The check on the ignition and detection electrodes is carried out after removing the combustion head.

C VRT Removal of the combustion head Remove the lid C. Unscrew the screws V which lock the gas manifold G and extract the complete unit as shown in the figure. Note: for subsequent assembly carry out the above described operations in the reverse order. AR V G OR

Fig. 25

Detection electrode

Earth electrode

Ignition electrode

Fig. 26

MAINTENANCE MANUAL

17

TERMINAL BOARD TERMINAL BOARD Check of ionisation current To measure the detection signals follow the scheme in fig. 27. If the signal is less than the value shown, check the position of the FLAME detection electrode, the electrical contacts and if necessary replace the detection electrode.

Model. App. LFL1.322

Minimum signal of detection 6 AFig. 27

FAULT FINDING TABLE

TROUBLE CAUSE BURNER DO NOT START

BURNER MOTOR NO NO IGNITION DOES STARTS BUT IGNITION IGNITION AND CYCLE NOT GO NO ATTEMPT AND AND CYCLE REPETITION TO HI TO IGNITE LOCKOUT REPETITION FIRE

LOCKOUT DURING BURNER RUN

BURNER STOPS AND REPEATS CYCLE DURING RUNNING

MAIN SWITCH OPEN PROTECTION FUSES INTERRUPTED THERE IS NO GAS DEFECTIVE GAS PRESSURE SWITCH DEFECTIVE THERMOSTAT FAN THERMIC RELAY OPEN AUXILIARY FUSE INTERRUPTED DEFECTIVE AIR PRESSURE SWITCH DEFECTIVE CONTROL BOX DEFECTIVE SERVOCONTROL SMOKY FLAME AIR PRESS. SWITCH BAD SET OR DEFECT. GAS PRESSURE SWITCH WRONG SETTING DEFECTIVE IGNITION TRANSFORMER IGNITION ELECTRODES BADLY POSITIONED GAS THROTTLE VALVE WRONG SETTING DEFECTIVE GAS GOVERNOR HI/LO FIRE THERMOSTAT DEFECTIVE SERVOCONTROL CAM WRONG SETTING IONIZATION PROBE BADLY POSITIONED PHOTOCELL IN WRONG POSITION

18

MAINTENANCE MANUAL

LEGENDBV CMF Fan motor remote contactor coil Manual operation switch 0) stoppage 1) high flame 2) low flame 3) automatic Auxiliary relay contacts Fan motor overload contacts Fan motor contactor Flame detection electrode Gas electro-valve upstream DUNGS group Gas electro-valve downstream DUNGS group Fuses UV flame detection Main switch Auxiliary line switch Phase Burner in high flame indicator light Burner lockout indicator light Burner in low flame indicator light Indicator light for opening of electro-valve EV1 Indicator light for opening of electro-valve EV2 LANDIS flame monitor device Indicator light for presence of gas in the network Indicator light for burner in stand-by (STAND-BY) Indicator light for leakage of valves Indicator light for fan overload tripped Ignition transformer indicator light Supply terminal block Terminal block for connection of burner components Fan motor Neutral Combustion air pressure switch High gas pressure switch(optional if used replace connection terminal 156 and 158 of MC terminal block) Low gas pressure switch Lockout reset button Auxiliary relay RWF32 SD # SQL33 SQN30.151 ST STA6B3.41/6 TA TAB TV VPS504 LANDIS modulator Temperature or pressure sensor LANDIS servocontrol for air damper LANDIS servocontrol for air damper Series of thermostat or pressure switches BERGER servocontrol for air damper Ignition transformer High/low thermostat (where supplied, remove the bridge between terminals 6 and 7 in terminal block MA) Fan motor thermal Dungs valve leakage monitor device

CR1 CTV CV ER EV1 EV2 F FC* IG IL L LAF LB LBF LEV1 LEV2 LFL1.322 LPGMIN LS LSPG LT LTA MA MC MV N PA PGMAX PGMIN PS R1

* In the version with photoelectric cell use ER in place of FC in context # The connection between "G" (RWF32 modulator) and "G" (pressure sensor terminal 13A external connection block) applies only if pressure sensor is used. The modulator includes a limit switch (terminals Q13 and Q14), it stops the burner if the work parameter overcomes settted differential. SERVO CONTROL CAMS LANDIS SQL33 Y1 Y2 3

high flame start-up low flame

N.B.

1 - Power supply 400V 50Hz 3N a.c. 2 - Do not reverse phase with neutral 3 - Ensure burner is properly earthed

ELECTRICAL DIAGRAM TYPE P90P520 MOD. M-.PR... (Code. 07-324/1)

MAINTENANCE MANUAL

19

20

P520 MOD. M-.MD... (Code. 07-325/1) ELECTRICAL DIAGRAM TYPE P90

APPENDIX: COMPONENT CHARACTERISTICS Landis&Gyr LFL1.322 flame monitor Landis gas valves Dungs MVD valves & DMV-DLE Dungs VPS504 leakage control Elecktrogas valveLANDIS & GYR LFL 1,322 Automatic programme in the event of interruption and indication of position when interrupted In principle, in the event of any kind of interruption, the flow of fuel is immediately interrupted. At the same time the programmer stops and this indicates the position at the time of the interruption. A symbol on the indicator disc shows each time the type of stoppage: No start-up (for example fault in the CLOSED signal for the limit contact Z terminal 8 or some other contact between the terminals 12 and 4 or 4 and 5 is not closed). Start-up suspended because of a fault in the OPEN signal for the limit contact A at terminal 8. P Block due to absence of air pressure signal. From this moment onwards any absence of air pressure will cause a block. Block due to malfunction of the flame detector circuit. Start-up interrupted because there is a fault in the 1 MINIMUM signal for the auxiliary contact of the damper servo motor at terminal 8. 2 Block due to absence of flame signal at the end of the (1st) safety period. From this moment onwards any absence of a flame signal will cause a block. Block due to absence of flame signal at the end of the 2nd safety period (flame signal of main burner). Block due to absence of flame signal or air pressure during operation. Block at the end of the start-up programme due to parasitic light or faulty flame signal (eg. UV detector is exhausted). Where a block stoppage occurs at any moment between switch on and pre-ignition without registering any symbol, the cause is normally an unscheduled flame signal.

Pag. Pag. Pag. Pag. Pag.

21-22-23 24 25-26 26 26

A response to start-up given by the thermostat or pressostat R A-B start-up programme B-C normal burner operation C regulation stop caused by R C-D programmer returns to start-up position A. During the regulation stop only terminals 11 and 12 are live and the damper, through the limit contact Z of its servo-motor is in the CLOSED position. The flame detector circuit F is activated (terminals 22 and 23 or 23/4) for the detector test and the paracitic light test. Where the burners do not have dampers (or have an independent 00 damper control mechanism) there must be a bridge between terminals 6 and 8, otherwise the mechanism will not start up the burner. For a burner to start up the following conditions must be met: Mechanism not blocked/reset. Damper closed. Limit contact switch Z must be in the CLOSED position and allow current to flow between terminals 11 and 8. Any contacts checking that the fuel valve (bv...) is closed, or other contacts with similar functions, must be closed between terminal 12 and the air pressostat LP. The contact for the air pressostat LP must be in the off position (LP test) so as to feed terminal 4. The gas pressostat contacts GP and the safety thermostat and pressostat contacts W must also be closed.

Start-up programme A Start-up (R closes the start-up control ring between terminals 4 and 5) The programmer starts up. At the same time the ventilator motor is fed through terminal 6 ( only for pre-ventilation) and, after t7, the ventilator motor or the combustion gas exhaust fan is fed through terminal 7 (pre-ventilation and post-ventilation). At the end of t16, the command opening the damper passes through terminal 9; during the damper travel time the programmer does not move since terminal 8, through which the programmer is fed, is dead. Only once the damper is fully open and the limit contact switch A has switched on, feeding terminal 8, does the programme proceed. t1 Pre-ventilation time with damper fully open (nominal air flow). Shortly after the beginning of the pre-ventilation time, the air pressostat should switch off the current between terminals 4 and 13; otherwise the apparatus would block (air pressure monitor). At the same time the terminal 14 should be live since current feeding the ignition transformer and the fuel valves passes through this circuit. During pre-ventilation time the flame detector circuit is checked and in the event of an operational defect the monitor brings about a block. At the end of the pre-ventilation time the monitor automatically moves the damper servo-motor, through terminal 10, to the flame ignition position which is governed by the auxiliary contact M. During this period the programmer stops until terminal 8, is again activated through contact M. After a few seconds the little programmer motor is directly fed by the active part of the apparatus. After this point terminal 8 plays no further part in the burner ignition process. Mono-tube burner Pre-ignition time up to the response from the fuel valve at terminal 18. Safety time (potential flame start-up) At the end of the safety time a flame signal should appear at terminal 22 of the amplifier and that signal should stay on until a regulation stop; if this does not happen the mechanism will block. Interval At the end of t4 terminal 19 is live. It is normally used to feed a fuel valve at auxiliary contact V of the damper servomotor. Interval At the end of t5 terminal 20 is live. At the same time the 21

a-b b-b

Start-up programme For time variants: move the programmer on to the automatic stop after the burner starts up (b = position of the programmer during normal burner operation). b(b)-a Post-ventilation programme after a regulation stop. At the start-up position a the programmer stops automatically. During safety time for mono-tube burners During safety time for twin-tube burners The apparatus can be reset immediately after a block. After resetting (and after the elimination of any problem causing the stoppage or after a power failure) the programmer returns to its start-up position. In this event only the terminals 7, 9. 10 and 11 are live in accordance with the monitoring programme. Only after this will the monitor programme a fresh start-up.

Operation The wiring system and also the control system of the programmer P have already been given in this manual (page--). The response signals required for the active parts and the flame monitor circuit are shown by a broken line. In the absence of these response signals the mechanism interrupts the start-up programme; the exact time of the interruption can be identified from the visual indicator and will cause a block if the safety code requires it.

t3 t2

t4

t5 APPENDIX

monitor outlets from 9 and 11 and terminal 8 into the active part of the apparatus are kept galvanically separated so as to protect the monitor itself from recovery voltage through the capacity regulator circuit. Twin-tube burners (**) Preignition time up to the all clear to the pilot burner valve at terminal 17. 1st safety time (potential pilot flame) At the end of the safety time a flame signal should appear at terminal 22 of the amplifier and that signal should stay on until a regulation stop; if it does not the apparatus will block. Interval Until the all clear to the fuel valve at terminal 19 for the first flame of the main burner. 2nd safety time At the end of the second safety time the principal burner should be lit by the pilot. At the end of this period terminal 17 is dead and therefore the pilot burner will be out. Interval At the end of t5 terminal 20 is live. At the same time the monitor outlets from 9 and 11 and at terminal 8 into the active part the apparatus are galvanically separated so as to protect the apparatus itself from recovery voltage through the capacity regulator circuit. When the capacity regulator LR at terminal 20 gives the all clear, the start-up programme for the apparatus comes to an end. With time variants the programmer stops either immediately or at the end of a set time, without effecting the position of the contacts. Operational position of the burner

base Ionisation monitor Voltage in detector electrode normal working; Short circuit current Ionisation current, min.reqmt Max. premitted length for connecting cables:

c.165g.

t3 t2

330V max. 0,5 mA 6A -normal cable (laid separately**) 80m -armoured cable (high frequency) protection at terminal 22 140m

t4 t9

UV monitor Voltage in UV detector normal working: Detector current, min. reqmt* Max. detector current, normal working: Max.length of connecting cable

t5

330V10%, test: 380V10% 70A 630A, test: 1300A

B

B-C Burner operation (production of heat) While the burner is working the capacity regulator controls the damper according to the demand for heat, by means of the positioning at nominal load of the auxiliary contact V of the damper servocontrol. C Regulation stop for operation of R When there is a regulation stop the fuel valves immediately close. At the same time the programmer starts to programme: t6 Post-ventilation time (post-ventilation with the ventilator G at terminal 7). Shortly after beginning of the post-ventilation time terminal 10 becomes live and moves the damper to the MIN position. The full closure of the damper only happens towards the end of the post-ventilation time and is prompted by an automatic signal from terminal 11 t13 Allowable post-ignition time During this time the flame monitor circuit may still receive a flame signal without the apparatus blocking. D-A End of automatic programme At the end of t6, at the point where the programmer and the automatic contacts have reverted to the starter position, the detector test restarts. During an operational stop even an unscheduled flame signal lasting a few seconds can cause a block so during this period an NTC in the circuit acts as retarder. This means that brief unscheduled influences cannot cause a block. (**) Times t3, t2 and t4 only apply to safety devices in the series 01. Technical characteristics Mains voltage Frequency Absorbed capacity Built-in fuse DIN41571 External fuse Interference Flow permitted at terminal 1 Flow permitted at control terminals Flow at monitor contacts: input at terminals 4 & 5 input at terminals 4 & 11 input at terminals 4 & 14 19 min.1A,250V Emplacement Protection Permitted ambient temp: Min.temperature (trans/storage) Weight: apparatus

- normal cable (laid separately**): 100m - armoured able (high frequency) protected at terminal 22: 200m Weight QRA2: 60g; QRA10: 450g. Ignition spark monitor with QRE1 series 02 detector Minimum detector current 30A * Connect up in parallel to the measuring device a condenser 100F,10...25V. ** The wire connecting up the detector electrode should not be in the same sleeve as the other conductor wires. Operating times t7 initial delay for ventilator G2 t16 initial delay for Damper OPEN response t11 travel time for damper t10 initial delay for air presure monitor t1 pre-ventilation time with damper open t12 travel time for damper to MIN position t3t3' pre-ignition time t3' t2t2' safety time (1st safety time for burners with intermittent pilot lighter t4t4' interval between start of t2 and response to valve at terminal 19 2nd safety time for burners with intermittent pilot lighter interval between end of t4 and response at terminal 20 interval before programmer cuts out after start-up Duration of start-up Post-ventilation time (G2 only) Permitted post-ignition time

2 4 any 8 36 any 4

t3 t2 t2' t4 t4'

2 6 2 10 32 30

t9 t5 t20 t6 t13

220V-15%... 240V+10% 50Hz-6%...60Hz+6% 3,5 VA T6,3/250E slow action No.451915070 max. 16A N-VDE0875 5A (DIN 0660 AC3) 4A (DIN 0660 AC3)

10 10

1A,250V 1A,250V Flow at terminals 16 & Any IP40 -20...+60C -50C c.1,000g.

22

APPENDIX

Key: A AI AR AS BR BV EK FE FR G GP H L LK LP LR M QRA QRE R S SA SM V V W Z Z ZBV (1 (2)

limit contact switch for damper OPEN position advance signal of a block main relay (working network) with contacts ar Monitor fuse block relay with br contacts fuel valve reset button detector electrode of ionisation circuit flame relay with fr contacts ventilator motor or burner motor gas pressostat main interruptor switch block stoppage LED damper air pressostat safety regulator auxiliary contact switch for damper MIN position UV detector ignition spark detector thermostat or pressostat fuse damper servo-motor synchronous programmer motor flame signal amplifier in case of servo-motor: auxiliary contact for response to fuel valve re damper position safety pressostat or thermostat ignition transformer in case of servomotor: end of limit contact switch for damper CLOSED position pilot burner fuel valve for mono-tube burners for twin-tube burners )input for raising QRA detector voltage to test level input for excitation of flame relay during flame detector t e s t circuit (contact XIV) and during safety time (contact I V) Do not press EK for more than 10 seconds

(3)

Programmer diagram t1 pre-ventilation time t2 safety time *t2' 1st safety time t3 pre-ignition time *t3' pre-ignition time t4 interval for creating current between terminals 18 and 19 *t4' interval for creating current between terminals 17 and 19 t5 interval for creating current between terminals 19 and 20 t6 post-ventilation time t7 interval between response and current created at terminal 7 t8 duration of start-up *t9 2nd safety time t10 interval before air pressure monitoring begins t11 damper opening travel time t12 damper closure travel time t13 permissible post-combustion time t16 initial delay of damper OPEN response t20 interval before programmer automatically stops * These times are valid with the use of a series 01 safety device for monitoring burners with intermittent pilot lighter.

APPENDIX

23

LANDIS & GYR GAS VALVE Functions

On-off Valves When the command is given to open the valve, the pump is switched on and the relief valve is simultaneously ciosed. From the nearly filled reservoir below the piston the oil is now pumped into the chamber above the piston, causing the piston to move downward and thus opening the valve - against the force of the return spring. The pump remains energized until the command is given to close the valve. When the valve closes (or when the electrical supply is interrupted), the pump stops and the relief valve opens the bypass thus allowing the return spring with the aid of the pressure of the gas to push the piston upward again. The flow characterstic of the relief valve is such that the valve fully closes in less than 0.8 second. Microswitch IV can be used for the indication of any valve disc position, e.g. as closed position indication (CPI). Actuators with gas pressure governors With these actuators the outlet pressure represents the actual value which acts on a diaphragm. The diaphragm is supported by a spring the force of which is adjustable, representing the setpoint. The movements of the diaphragm are transferred to a lever system which opens and closes a bali valve situated in the bypass between the pressure side and the reservoir. If the actual value is smaller than the setpoint, the bypass is closed so that the actuator can open the valve. If the actual value exceeds the setpoint, the bypass is opened to some extent so that some oil can retum from the pressure side to the reservoir. The piston travels upward and the valve is slightly ciosed. This movement of the piston comes to a standstill as soon as actual value and setpoint are identical. In this position the openmg of the bypass is such Ihat the retum flow through the bypass corresponds to the current oil output of the pump. The control accuracy is very great since small movements of the diaphragm initiate the control functions described above. The control characteristic is that of a P-controller with a very small proportional band. Inspite of this the control stability is good since the piston velocities are small. Design Features Actuator The electro-hydraulic actuator consists of a cylinder filled with oil and an electric oscillatng pump with piston and relief valve. The relief valve is located in a bypass between the inlet and outlet of the pump. With actuators of series B it is usually a valve hydraulically actuated by the pump pressure; with the 2stage opening actuators of series A it is a normally open solenoid valve. The cylinder carries a seal which hydraulically separates the inlet from the outlet side of the pump and serving at the same time as a guidance for the piston. At the bottom the piston is guided by a rod rigidly connected to the piston. This rod transfers the travel of the piston direct to the valve stem. The rod is provided with a disc the position of which is visible through a window in the console (indication of stroke). The disc, with the aid of a lever system, also actuates the auxiliary switch to signal the closed position or other positions, as well as the limit changeover switches for the positioning of the low-fire and high-fire stroke with high-low valves. The switching positions of these switches are adjustable over the entire stroke. The adjusting screws are contained in the terminal box.

Gas pressure governor The govemor has a working diaphragm, a safety diaphragm, a set-point spring and a lever system which actuates a ball valve in the bypass between the pressure side and the reservoir of the hydraulic system (also refer to Functions). The setting can be sealed. The impulse ppe connection is Rpva. Due to the use of a safety diaphragm a vent pipe is not required with inlet pressures of up to 100 mbar. If empioyed in connection with valve proving systems, the maximum permissible vacuum is 200 mbar. The housings of actuator and govemor are made of die-cast alumnium, seals are made of elastomer.

24

APPENDIX

ELECTROMAGNETIC MONO-STAGE VALVE SAFETY VALVE TYPES MV/5, MNVD/5, MVDLE/5 Technical data Thread DIN2999 Rp 3/8, 1/2, 3/4, 1, 1 1/2, 2 Max. working excess pressure up to 0,2 bars or 0,5 bars (see table of types of valve) Degree of pressure Closure time Opening time PN1 < 1 sec. < 21 sec. for type MVDLE, c.20 sec. at ambient temperature 20C and without quick release. manual, regulatable between 0 and 70% of the total aperture of the quick action stroke manual for types MVD and MVDLE base NBR, gas-resistant as per sheet G260/1 -15C to +70C with coil vertical or horizontal or any intermediate position. See diagram built-in with gauze G1/4 DIN ISO 228 on both sides of the intake pressure field and supplementary connector on front G3/4 from flanged DN40 (AC)220V(+10%-15%); 50-60Hz and others on request see table of types of valve 100%ED IP54, IP65 with standard cable length 3m request to junction box with PG11 cableclip type K01/1 in accordance with standard DIN-DVGW.

Warning Do not allow any direct contact between an electronagnetic valve and any cement or concrete wall, partition or flooring! Always calibrate nominal gas pressure using a gas pressure gauge Any specific regulation of the flow should only be done through the valve. To regulate the main flow for the MVD series To regulate the flow first unscrew the cover and loosen the lock nut. As supplied by the manufacturer the regulator is in the fully open position. Turn in a clockwise direction to reduce the flow, anti-clockwise to increase it. After regulating check the burner flame, tighten up the lock nut and replace the cover. To regulate the series MVDLE quick release The quick rel;ease is not regulated before it leaves the factory. To regulate first unscrew the cover D and use the grooving in the top as a regulating tool. Use it to turn the regulator pin. Turn it clockwise to reduce the quick release and anti-clockwise to increase it. Then screw the cover back on. replace the hydraulic brake and the series MVDLE coil Turn off the gas supply. Cut off power to thje valve. Undo the round-headed screw A. Undo the countersunk screw B (painted blue) Bring up the hydraulic brake, without forcing it and following the direction of the arrow-markings. 6. Again without using force insert the new hydraulic brake a/ o magnet. Important: when replacing the hydraulic brake be very careful to get the position of the drag C exactly right and take care not to damage the O rings 7. Turn the hydraulic brake until the threaded hole corresponds to the fixing screws. 8. Screw in the countersunk screw B and tighten it up to the point where the hydraulic brake can just be made to turn without resistance and without forcing it. Fasten the coil firmly. 9. Screw in the round-headed screw A, tighten and then slacken it off one turn. 10. Move the valve into the operational position by adjusting the aperture delay and the main flow. 11. Check that the valve is gas-tight from the outside. 12. Turn on the gas supply. 13. Switch on the current, adjust the gas flow as required, turn the hydraulic brake without forcing it in the direction of the arrow, as shown on the base. 14. Regulate the gas flow and tighten up the round-headed screw A 15 We would recommend that after replacing the hydraulic brake the screw B be sealed with varnish. To replace the series MV,MVD coil Remove the electrical wiring, unscrew the cover and remove the coil. To install reverse the procedure. Approval In accordance with standards DIN-DVGW. Supplementary approval in all the main gas-using countries. To 1. 2. 3. 4. 5.

Quick release

Main flow regulation Gasket on seat of valve Ambient temperature Emplacement

Anti-dust device Connector for meter or burner gas

Voltage/Hz

Absorbed capacity Response time Protection only on Electrical connection Limit switch

Instructions for installation and use Installation When fitting the leads pay special attention to the direction of flow and the arrow marking on the body of the valve, and observe the prescribed mounting positions. When attaching the lead to the valve be sure not to use the magnet as a lever but use a suitable tool. After installing the valve check that it works and it gas-tight. Electrical wiring Wire in with cable clip PG11. Connect up to a suitable junction box mounted on the coil housing. Follow the electrical wiring diagram.

APPENDIX

25

DOUBLE ELECTROMAGNETIC VALVES DMV-DLE/11 Technical data Flange dimensions Max. working pressure Phase pressure Electromagnetic valve V1 Fuse at inlet DN40/50/65/80/100/125 500mbars(50kPa) PN1 automatic lock valve standard EN161 Class A, Group 2 automatic lock valve standard EN161 Class A, Group2