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Installation and Operating Instructions
Gas burner WG20.../1-C ZM-LN (W-FM 25)

83055116 • 1/2016-05

8 Maintenance and service

8.11 Removing and re-installing the gas butterfly valve stepping motor

Observe the notes on maintenance and servicing (see Ch. 8.1).

Removing

Remove the stepping motor plug

from the combustion manager.

Remove the screws

Remove the stepping motor.

Re-installing

Damage to the stepping motor caused by turning the shaft

The stepping motor could be damaged.

Do not turn the shaft manually or with tools.

Plug in the stepping motor plug

at the combustion manager.

Unplug the bridging plug No. 7 from the combustion manager.

Switch on the power supply.

The combustion manager checks the stepping motor and drives it to the reference

point.

Disconnect the power supply.

Install the stepping motor rotated by approx. 15º.

Install the screws

to the stepping motor.

Plug in the bridging plug No. 7 in the combustion manager.

15°

CAUTION

Summary of Contents for WG20 Series

Page 1: ...C ZM LN W FM 25 83055116 1 2016 05 Installation and Operating Instructions manual Certified for use in USA Canada Conforms to à UL std 795 R2013 UL std 295 R2015 and UL std 296 R2013 Certified certifié CSA std 3 4 R2009 ...

Page 2: ...Front cover WG20 1 C ZM LN 83055116 1 2016 05 2 ...

Page 3: ...omponents 11 3 3 4 Program sequence 12 3 3 5 Inputs and outputs 14 3 4 Technical data 15 3 4 1 Electrical data 15 3 4 2 Ambient conditions 15 3 4 3 Permissible fuels 15 3 4 4 Capacity 16 3 4 5 Dimensions 17 3 4 6 Weight 17 4 Installation 18 4 1 Preparations prior to installation 18 4 2 Burner installation 19 4 2 1 Rotate burner by 180º 20 4 3 Gas supply 21 4 4 Electrical connection 22 5 Operation ...

Page 4: ...1 8 6 Service position 52 8 7 Removing and re installing the blower wheel 53 8 8 Removing the burner motor 54 8 9 Removing and re installing the air damper stepping motor 55 8 10 Removing and re installing the angle drive 56 8 11 Removing and re installing the gas butterfly stepping motor 57 8 12 Removing and re installing the gas butterfly valve 58 8 13 Removing and re installing the air regulato...

Page 5: ...etent personnel according to this operating manual are persons who are familiar with the installation mounting setting and commissioning of the product and have the necessary qualifications and training DANGER CAUTION WARNING u P n indicates imminent hazardous situation which if not avoided will result in death or serious injury indicates potential hazardous situation which if not avoided could re...

Page 6: ...nnected to the burner the gas train shall be pressure tested using either air or an inert gas as ruled by applicable codes The gas manifold pressures listed for each gas or combination gas oil burner are approximate figures obtained from tests on test boilers under ideal conditions Manifold pressures are only to be used as a guide during start up The only accurate method of determining the exact f...

Page 7: ...n Safety measures in normal operation Only use the equipment when all safety devices are fully functional At least once a year the equipment including all safety devices should be checked for signs of visible damage and to ensure that all safety devices are operating correctly More frequent safety checks may be required depending on plant conditions Electrical safety Work on the electrical supply ...

Page 8: ...upplier of the type and extent of the planned installation and the intended work The subcontractor must ascertain that an adequate gas supply to the installation is ensured Installations alterations and maintenance work on gas systems in buildings and below ground must only be carried out by installers who have a contract with the gas supplier The gas train must be subject to a preliminary and mai...

Page 9: ... its capacity range Faults which could affect the safe operation of the burner should be rectified immediately 3 2 Nomenclature WG20N 1 C ZM LN W Type Weishaupt burner G Fuel Gas 20 Burner size N N Natural Gas F LPG 1 Capacity range C Revision ZM Version sliding two stage or modulating LN Version LowNOx 3 3 Basic functions Automatic power gas burner for sliding two stage or modulating operation El...

Page 10: ...on applicable codes regulations 1 Gas shut off valve The gas shut off valves open and shut off the gas supply to the burner and or pilot 2 Gas pressure regulator SKP25 The SKP25 is a motorized valve actuator with integrated pressure regulator It opens and shuts the V2 valve according to the burner startup or shutdown sequence and it also regulates the gas pressure to the burner corresponding to th...

Page 11: ... V2 valve closes and the combustion manager initiates a lockout 3 3 3 Electrical components Combustion manager The W FM combustion manager is the main burner control unit It controls the sequence of burner operations monitors the flame and communicates with all related components in the system Operating interface Via the operating interface the operational related values and parameters of the com ...

Page 12: ...ning pre purge time is displayed 5 The air damper stepping motor drives to ignition position operating point P0 6 Gas valve V1 opens The low gas pressure switch is checked and must be closed Ignition spark starts 7 Gas valve V2 opens The gas is released The safety time begins The display shows the symbol 8 Flame stabilization The high gas pressure switch is checked and must be closed 9 The air dam...

Page 13: ...as valve TP1 1 Test phase 8 sec proving V1 optional K33 External valve LPG optional TP2 2 Test phase 16 sec proving V2 optional M1 Burner motor TV Pre purge time 60 sec M20 Air damper stepping motor TS Safety time 4 sec M38 Gas butterfly valve stepping motor The device is energized P11 Burner status light optional Flame signal is present T1 Ignition unit Current path S32 Proof of Closure switch V2...

Page 14: ...nal valve LPG optional 3C Burner motor for continuous running blower 3N Burner motor for normal blower operation 4 Ignition unit 5 Double gas valves 6 Not used 7 Bridging plug No 7 8 Gas meter impulse generator 11 Air pressure switch 12 Gas valves Proof of Closure switches POC 13 Ionization electrode 14 Low gas pressure switch 15 High gas pressure switch X6 7 pole connection plug power supply On O...

Page 15: ...rnal fuse 15 AT Burner motor ECK04 A 2 1 Mains voltage frequency 110 V 60 Hz 1 Power 0 31 HP 0 23 kW Current 3 7 A 110 V Speed 3 460 rpm External fuse 10 AT 3 4 2 Ambient conditions Operating temperature 5 100 F 15 40 C Transport storage temperature 4 158 F 20 70 C Relative humidity max 80 no condensation 3 4 3 Permissible fuels Natural gas Propane Installation and Operating Instructions Gas burne...

Page 16: ...evel Capacity reduction should be applied depending on the altitude of the installation approx 1 per 328 ft 100 m above sea level Capacity reduction might be required for burners with ducted air intake 0 25 0 0 25 0 100 200 300 400 500 600 700 2 1 0 5 0 75 1 0 1 25 1 Firing rate in MBTU H 2 Combustion chamber backpressure in w c Installation and Operating Instructions Gas burner WG20 1 C ZM LN W F...

Page 17: ... 32 mm 10 5 8 270 mm Rp1 1 Installation and Operating Instructions Gas burner WG20 1 C ZM LN W FM 25 83055116 1 2016 05 1 5 1 2 140 mm without combustion head extension 9 1 2 240 mm with 3 7 8 100 mm combustion head extension 13 3 8 340 mm with 7 7 8 200 mm combustion head extension 17 3 8 440 mm with 11 3 4 300 mm combustion head extension 3 4 6 Weight Approx 61 lbs 28 kg ...

Page 18: ...of the combustion head The refractory can take a conical shape min 60 Refractory may not be required on boilers with water cooled fronts unless the manufacturer gives other instructions The gap 4 between the flame tube and the refractory must be filled with resilient insulation material do not make solid Heat exchangers with deep refractories or thick doors or heat exchangers with reverse flame co...

Page 19: ... must be installed rotated by 180 and additional conversion measures are required u Attach the flange gasket 2 and the burner flange 1 to the heat exchanger using screws 3 u The gap between the flame tube and the refractory should be filled with flame proof resilient insulating material do not make solid u Install burner to the burner flange using screws 1 u Check the ignition and ionization elect...

Page 20: ...e fixing bracket of the burner housing 3 on the opposite side of the burner s housing u Rotate the burner flange 2 by 180 and installed it with the flange gasket u Rotate the burner by 180 and install screws 4 to the burner flange u The gap between the flame tube and the refractory should be filled with flame proof resilient insulating material do not make solid u Check the ignition and ionization...

Page 21: ...he machined faces Evenly tighten screws diagonally opposite Gas trains must be mounted stress free Do not compensate misalignment by over tightening Do not tighten or seal pipe thread connections on the mounted burner The gas train must be fixed and supported securely It must not be allowed to vibrate during operation Supports suitable for the site should be fitted during installation IMPORTANT En...

Page 22: ...tallation must only be carried out by qualified and trained personnel Connecting the W FM combustion manager u Use the cable entry points provided on the burner u Wiring must be performed according to the wiring diagram specific for the job Separate power supply line for the burner motor u Plug the power supply line for the burner motor to connection plug 1 of the motor starter Pre fusing of the s...

Page 23: ...tor 5 Enter Enter key Reset burner call up information press approx 0 5 sec Info level press approx 2 sec Service level 3 and 5 and Enter Press approx 2 sec Parameter level only with display OFF Various actions are only triggered when the key is released for example changing the display and reset 23 2 1 3 4 5 Installation and Operating Instructions Gas burner WG20 1 C ZM LN W FM 25 83055116 1 2016...

Page 24: ...amper setting u Press L A key OFF function u Press Enter L A and G keys simultaneously aImmediate lockout with error 18h Operating status The operating status of the combustion manager can also be displayed which helps in troubleshooting the burner s fault u Press and hold and simultaneously for approx 3 sec aThe combustion manager changes to operating display The display shows the current operati...

Page 25: ...ctivated 4 Stepping motor runs to CLOSED position 5 Stepping motor runs to OPEN position 6 Burner in operation 7 Lockout 8 Service level activated Stand by no call for heat Stand by X3 7 circuit open Plug No 7 removed Unprogrammed condition or programming not completed Shutdown via Fieldbus Insufficient gas pressure Under voltage or internal device error see error memory display flashes Connection...

Page 26: ...X3 8 Reset value uPress L A and simultaneously for approx 2 sec 1 Hours run 2 no function 3 Burner starts 4 Device item number 5 Index of device item number 6 Device number 7 Production date DDMMYY 8 Fieldbus address 9 Valve proving setting 11 Current blower speed only with VSD Display of standardized speed uPress L A 12 Current gas consumption 0 1 m3 h 13 Analogue module EM3 3 or Fieldbus module ...

Page 27: ...g point P1 2 Stepping motor position in operating point P2 3 Stepping motor position in operating point P3 4 Stepping motor position in operating point P4 5 Stepping motor position in operating point P5 6 Stepping motor position in operating point P6 7 Stepping motor position in operating point P7 8 Stepping motor position in operating point P8 9 Stepping motor position in operating point P9 10 18...

Page 28: ... fault memory uPress L A and simultaneously for approx 2 sec 6 Factor for gas consumption 1 65535 200 Impulse rate for meter per m3 200 impulses 1 m3 uAdjust factor depending on the gas meter impulse rate A Low gas pressure switch 0 disabled 3 valve proving gas press sw 1 Proof of closure valve 1 X3 12 2 without low gas pressure switch 3 with low gas pressure switch b Air pressure switch X3 11 0 d...

Page 29: ...s level is activated u Press aParameter E0 is displayed u Press Enter to reach the next information Parameters Information Range of values E0 Burner type 0 single fuel burner 1 dual fuel burner E1 Operating mode 0 intermittent operation display only no adjustment possible 1 continuous operation E2 Flame sensor type 0 ionization electrode flame sensor FLW 1 switch input X3 14 2 flame sensor QRB E3 ...

Page 30: ...ht line is generated from the operating point displayed to P9 The values on the straight line are adopted as the new operating points Initiate a calculation after P9 u Press Enter aThe combustion manager changes to linearization mode The linearization mode can be interrupted by pressing the key u Confirm with key aLinearization is initiated Example 1 Calculation from P1 to P9 2 Calculation from P5...

Page 31: ...tact protection of electrical equipment and of all wiring must be checked Checklist prior to initial commissioning o Heat exchanger must have been correctly installed o Operation procedures of the heat exchanger must be strictly followed o The entire installation must be wired correctly o Heat exchanger and heating system must be adequately filled with heating medium o Flue gas passages must be fr...

Page 32: ... measuring device in series Ionization current Extraneous light detection from 1 μA Minimum ionization current 5 μA Recommended ionization current 9 15 μA Measuring device for the mixing pressure u Open pressure test point for mixing pressure 1 and connect the pressure measuring device Installation and Operating Instructions Gas burner WG20 1 C ZM LN W FM 25 83055116 1 2016 05 1 ...

Page 33: ...ditions Natural gas Propane Calorific value 1 000 BTU cu ft Calorific value 2 500 BTU cu ft Burner firing rate Nat gas manifold pressure Propane manifold pressure in MBTU h kW in w c mbar in w c mbar 273 80 3 3 8 5 3 6 9 3 307 90 3 3 8 5 3 6 9 3 341 100 3 3 8 5 3 6 9 3 375 110 3 3 8 5 3 6 9 3 410 120 3 3 8 5 3 6 9 3 444 130 3 5 8 9 3 8 9 6 478 140 3 6 9 3 3 9 9 9 512 150 3 8 9 6 4 0 10 2 546 160 3...

Page 34: ...c pressure Diffuser setting dimension X 0 0 mm 1 4 5 5 mm Air damper setting 43º 80º 1 Burner firing rate MBTU h 4 Diffuser setting mm dimension X 2 Combustion chamber pressure w c 5 Air damper setting range with diffuser 3 Air damper setting closed X 0 mm 6 Setting range dimension X with air damper setting 80º Setting the diffuser With dimension X 0 mm the indicating bolt is flush with the cover ...

Page 35: ...The combustion manager changes to access level u Press key aThe combustion manager changes into the setting level for step points u Press key aThe factory setting operating point P9 is displayed u Press and hold L A key and set the determined air damper setting using the or keys u Press and hold G key and set the gas butterfly valve to the same value using the or keys u Press key aThe factory sett...

Page 36: ...ating valve u Plug in the bridging plug No 7 on the combustion manager aBurner starts aValve proving is executed if required and enabled u Check the sequence of operation Valves open Gas pressure switch trips Burner start is interrupted Burner doesn t detect a flame and goes to lockout u Reset the burner using the Enter key u Reset the low gas pressure switch if necessary aThe combustion manager d...

Page 37: ...uring device u Open the gas isolating valve u Briefly press and keys simultaneously aThe display shows E ACCESS u Press key aThe burner starts according to the sequence of operation and stops at the operating point P0 ignition position u Preset the determined setting pressure at the gas pressure regulator u Check the CO content in the flue gas and if necessary adjust combustion values via the gas ...

Page 38: ...urer and the capacity graph must be observed while adjusting the burner u Clock the gas meter for the required gas flow u Optimize the setting pressure and or the gas butterfly valve setting G until the required gas flow has been reached u Check the combustion values u Determine the combustion limit and set the excess air via the air damper setting L A u Determine once more the gas throughput and ...

Page 39: ... gas butterfly valve setting G u Check the combustion values u Determine the combustion limit and set the excess air at approx 20 25 via the air damper setting L A 7 Adjusting the ignition position P0 u Press key aThe burner drives to the operating point P0 ignition position u Check the combustion values at operating point P0 ignition position u Set the O2 content at 4 5 above the gas butterfly se...

Page 40: ...P1 aThe calculation from P1 to P9 has completed 9 Optimizing the operating points u Check the combustion values u Press and hold G and optimize the combustion values via the gas butterfly valve setting using or keys u Press key aThe next operating point is selected u Repeat the steps for the operating points P2 to P9 u Press G and L A simultaneously aThe upper operating limit bo is displayed 83055...

Page 41: ...s throughput and adjust if necessary the low fire bu using key u Press G and L A simultaneously aThe combustion manager changes to Operating mode 10 aThe programming of the combustion manager is completed 11 Checking the start behaviour u Switch off and restart the burner u Check the start behaviour and if necessary correct the operating point P0 ignition position If the ignition firing rate has b...

Page 42: ...the setting cam 1 Example Lowest differential pressure 1 7 w c Switching point air pressure switch 80 1 7 w c x 0 8 1 4 w c Site specific conditions such as flue gas system heat exchanger boiler room etc might affect the air pressure switch and therefore it might require a different value than the above recommended setting 6 4 Concluding works u Check the functions of all safety devices Gas pressu...

Page 43: ...t nominal firing rate Flue gas temperature for low fire is the result of control range adjustment The instructions of the manufacturer are to be followed strictly On hot water boiler installations low fire is normally set to 50 65 of the high fire rating some of the data may be on the boiler rating plate On air heater installations the low fire is normally even higher Again the instructions of the...

Page 44: ... volume VN QN VN η x H Actual volume VB Gas temperature in Celsius VN VB tG tF 32 x 0 5556 f Conversion factor f PBARO PG x 273 f 399 273 tG Altitude above sea level 656 ft Barometric pressure PBARO as per table 392 w c 995 mbar Gas pressure PG at meter 5 PSI 135 w c Total pressure PT PBARO PG 527 w c 1339 mbar Gas temperature tG 68 F 20 C Conversion factor f 1 23 Boiler rating QN 1 000 000 BTU h ...

Page 45: ...n manager changes to setting level u Plug the bridging plug No 7 on the combustion manager aThe burner starts and stops in operating point P0 ignition position u Move through the other operating points using the and keys and optimize if necessary Exit setting level u Press G and L A simultaneously aThe upper operating limit bo is displayed u Press G and L A simultaneously aThe lower operating limi...

Page 46: ...ff the power supply to the burner u Close the gas shut off devices 46 Installation and Operating Instructions Gas burner WG20 1 C ZM LN W FM 25 83055116 1 2016 05 46 Installation and Operating Instructions Gas burner WG20 1 C ZM LN W FM 25 83055116 1 2016 05 ...

Page 47: ...rength readings inspection and testing of all safeties including air pressure switch flange switch gas pressure switches flame sensor interlocks motor overloads etc Also the burner should be inspected for any mechanical damage The following components must not be repaired and must be replaced upon failure Stepping motors Flame sensor Combustion manager Pressure regulator Gas valves Gas pressure sw...

Page 48: ...ace Recommendation at least every 2 years Flame tube diffuser Soiling Clean Damage Replace Gas valves Fault identified Replace 100 000 burner starts or 10 years 2 Replace Gas pressure regulator Setting pressure Check Function soundness Replace 15 years Replace Gas pressure switch Switch point Check 50 000 burner starts or 10 years 2 Replace 1 The specified design lifespan applies for typical use i...

Page 49: ...leakage could occur if the gasket 3 is seated incorrectly u Following work at the mixing head ensure that the gasket is clean and seated correctly Replace if damaged u Check for leaks Removing u Unplug ionization cable 5 u Unplug ignition cable 1 u Loosen screws 4 u Turn the mixing head 2 to the left up to the recess and remove Re installing u Re install the mixing head in reverse order ensuring t...

Page 50: ...urner mounted This is only possible with the mixing head removed with the help of the dimension Lx Dimension Lx changes according to the combustion head extension used u Remove the mixing head see Ch 8 3 u Turn the setting screw 1 until the indicating bolt 5 is flush with the nozzle assembly cover dimension X 0 mm u Check dimension Lx If the measured value deviates from dimension Lx u Loosen screw...

Page 51: ...he ionization and the ignition electrodes Observe the notes on maintenance and servicing see Ch 8 1 u Remove the mixing head see Ch 8 3 u Loosen screw 1 u Set the ignition electrode and re tighten screw 1 u Loosen screw 2 u Set the ionization electrode and re tighten screw 2 3 16 5 mm 3 16 5 mm 1 16 3 32 1 5 2 mm 1 16 3 32 1 5 2 mm 1 2 ...

Page 52: ...55116 1 2016 05 8 Maintenance and service 8 6 Service position Observe the notes on maintenance and servicing see Ch 8 1 The burner mounted rotated by 180º cannot be placed into service position u Remove the mixing head see Ch 8 3 u Remove the cover 2 and remove the plugs u Hold the housing cover and remove the screws 1 u Place the housing cover onto the hanging bolts 3 1 2 3 ...

Page 53: ... Observe the notes on maintenance and servicing see Ch 8 1 Removing u Place the housing cover into service position see Ch 8 6 u Remove the set screw 1 and remove the blower wheel Re installing u Re install the blower wheel in reverse order and ensure correct alignment on the motor shaft 2 screw in a new set screw turn the blower wheel to ensure it moves freely 2 1 1 2 ...

Page 54: ... C ZM LN W FM 25 83055116 1 2016 05 8 Maintenance and service 8 8 Removing the burner motor Observe the notes on maintenance and servicing see Ch 8 1 u Remove the blower wheel see Ch 8 7 u Unplug the plugs number 3 and 11 u Disconnect the and hoses u Remove screws 1 and the air pressure switch u Hold the motor and remove the screws 2 u Remove the motor 2 1 ...

Page 55: ... shaft The stepping motor could be damaged u Do not turn the shaft manually or with tools u Plug in the stepping motor plug 4 at the combustion manager u Unplug the bridging plug No 7 from the combustion manager u Switch on the power supply aThe combustion manager checks the stepping motor and drives it to the reference point u Disconnect the power supply u Install shaft 2 to the stepping motor u ...

Page 56: ... Removing and re installing the angle drive Observe the notes on maintenance and servicing see Ch 8 1 Removing u Remove the air damper stepping motor see Ch 8 9 u Remove the frame 1 u Remove the angle drive 2 Re installing u Remove the intake housing u Open the air damper 3 until the position 4 has been reached and hold tight u Install and secure the angle drive u Install the intake housing u Inst...

Page 57: ...talling Damage to the stepping motor caused by turning the shaft The stepping motor could be damaged u Do not turn the shaft manually or with tools u Plug in the stepping motor plug 1 at the combustion manager u Unplug the bridging plug No 7 from the combustion manager u Switch on the power supply aThe combustion manager checks the stepping motor and drives it to the reference point u Disconnect t...

Page 58: ...2 Removing and re installing the gas butterfly valve Observe the notes on maintenance and servicing see Ch 8 1 Removing u Unscrew the double nipple R1 1 NPT 3 from the gas butterfly valve u Remove the mixing head see Ch 8 4 u Remove the screws 1 and remove the gas butterfly valve 2 Re installing u Re install the gas butterfly valve 2 in reverse order screw the double nipple 3 and perform a gas tra...

Page 59: ...installing the air regulator Observe the notes on maintenance and servicing see Ch 8 1 Removing u Remove the burner from the appliance u Remove the stepping motor plug 5 u Remove the screws 2 u Remove the intake housing 1 u Remove the screws 4 u Remove the air regulator 3 Re installing u Re install the air regulator in reverse order 2 4 3 1 5 ...

Page 60: ... slide up the combustion manager out from the mounting bracket u Install the new combustion manager in reverse order u Re connect all the plugs to the combustion manager Presetting the combustion manager u Unplug the bridging plug No 7 from the combustion manager u Switch on the power supply aThe unprogrammed condition of the combustion manager is indicated by a flashing display aThe burner goes t...

Page 61: ... u Press aE3 is displayed u If required set the value 1 blower control using Enter and keys u Press aThe combustion manager changes into the setting level for the step points u Determine the operating points from the commissioning record u Set the burner using these operating points and adjust Deactivate the E Parameters Following commissioning set the parameter E to OFF u Press Enter and keys sim...

Page 62: ...6 1 2016 05 8 Maintenance and service 8 15 Replacing the combustion manager s fuse Observe the notes on maintenance and servicing see Ch 8 1 u Unplug the connection plug X6 from the combustion manager u Replace the blown fuse with the replacement fuse 1 6 3 AT u Reconnect the plug X6 1 ...

Page 63: ...sure on the appliance has tripped limiter on the appliance The Low Water safety interlock on the boiler uTop up the water in the boiler has tripped uReset the Low Water safety interlock on the boiler 1 Notify Weishaupt Customer Service or your Weishaupt representative if this problem occurs repeatedly 9 1 2 Display showing OFF The following faults may be corrected by the operator Fault Cause Recti...

Page 64: ...error code is displayed flashing u Read the error code e g A7h u Rectify the cause of the fault see Ch 9 2 Resetting Damage could result from incorrect servicing The burner could be damaged u Do not reset more than 2 lockouts successively u Faults must be rectified only by qualified personnel u Press Enter aBurner has been reset Fault memory The last 9 faults are saved in the fault memory CAUTION ...

Page 65: ...ode and the second detailed fault code are relevant only for the following faults 18h 41h 65h First detailed fault code operating status u Press key 1 First detailed fault code 2 Operating status Second detailed fault code u Press and keys simultaneously Repetition counter u Press G key 83055116 1 2016 05 Installation and Operating Instructions Gas burner WG20 1 C ZM LN W FM 25 1 2 ...

Page 66: ...ner If the fault re occurs replace the combustion manager see Ch 8 12 Over voltage uSwitch off the power supply temporarily uCheck the power supply s voltage uReset the burner If the fault re occurs replace the combustion manager see Ch 8 12 04h More than 5 resets in the last 15 minutes uWait 3 minutes uRectify the fault cause 0Ch Burner configuration is incorrect uCheck the burner configuration u...

Page 67: ...nd detailed fault code A8h No calibration values stored in EEPROM Second detailed fault code uCheck the bus connection A9h No bus connection Second detailed fault code uSwitch off the power supply temporarily 01h 1Bh uReset the burner If the fault re occurs replace the Internal unit fault combustion manager see Ch 8 12 Second detailed fault code E1h E7h Calibration values in EEPROM incorrect Secon...

Page 68: ...ner motor incorrect 47h Type of air stepping motor invalid uCheck parameter 34 Type of gas stepping motor invalid uCheck parameter 35 48h Plugs of stepping motors for gas and air uChange over the plugs mixed up Tolerance fault stepping motor uCheck freedom of movement of air damper and or angle drive and gas butterfly valve uReplace the stepping motor 49h Stepping motor does not drive correctly uC...

Page 69: ... motor or VSD uCheck the VSD or blower replace if necessary First detailed fault code uCheck freedom of movement of air damper and or 05h angle drive and gas butterfly valve Tolerance fault air stepping motor uReplace the stepping motor First detailed fault code 07h Time run out during speed standardization uPress key within 20 sec during speed std Time in setting mode run out uPress key within 30...

Page 70: ...heck parameter E0 AFh Valve 2 leaking during valve proving uCheck the soundness of the gas train uCheck the setting and function of the gas pressure switch uReplace the valve b6h Fault POC contact uCheck the POC contact uCheck the gas valves bAh Flame simulation or uFind and eliminate the extraneous light source extraneous light at start up uCheck the ionization electrode bbh Burner shutdown via X...

Page 71: ...et incorrectly uSet the mixing head Flame pulsating or burner booming Mixing head set incorrectly uSet the mixing head Incorrect combustion air quantity uAdjust the burner Stability problems Mixing pressure too high uDecrease mixing pressure at ignition position No display at the operating interface Plug connection to the operating panel uPlug the connector correctly incorrect Operating interface ...

Page 72: ...ual fuel burners with patented fuel distribution system WK Modular powerhouses Up to industrial burners Adaptable robust powerful 100 000 MBH Oil gas and dual fuel burners for industrial plant Control technology From control panels to complete building management Building systems at Weishaupt you can find the entire Management spectrum of modern control technology System BMS Future oriented econom...

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