Viessmann Vitodens 333 Service Instructions Manual
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Viessmann Vitodens 333 Service Instructions Manual

Compact gas fired condensing boiler natural gas and lpg version
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VIESMANN
Service instructions
for heating engineers
Vitodens 333
Type WS3A, 4.2 to 13.0 kW
Compact gas fired condensing boiler
natural gas and LPG version
See applicability on the last page
VITODENS 333
Please keep safe
5692 579 GB
11/2004

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  • Page 1 VIESMANN Service instructions for heating engineers Vitodens 333 Type WS3A, 4.2 to 13.0 kW Compact gas fired condensing boiler natural gas and LPG version See applicability on the last page VITODENS 333 Please keep safe 5692 579 GB 11/2004...
  • Page 2 Safety instructions Safety instructions Please follow these safety instructions closely to prevent accidents and material losses. Safety instructions explained Regulations Danger Observe the following during service This symbol warns against the work: & risk of injury. all legal instructions regarding the prevention of accidents, &...
  • Page 3 It is not permitted to carry out repairs on parts that fulfil a safety function. Ancillary components, spare and Use only original Viessmann spare wearing parts parts, or equivalent parts that have been approved by Viessmann. Important information...

  • Page 4: Table Of Contents

    Index Index Initial start-up, inspection, maintenance Steps - initial start-up, inspection and maintenance ........Further details regarding the individual steps ..........Coding Code 1......................39 Code 2......................42 Resetting coding to as delivered condition ..........61 Service scans Service level summary ................62 Temperatures, boiler coding card and brief scans ........

  • Page 5: Initial Start-Up, Inspection, Maintenance

    Initial start-up, inspection, maintenance Steps - initial start-up, inspection and maintenance For further instructions on individual steps, see pages indicated Commissioning steps Inspection steps Maintenance steps Page • 1. Filling the heating system ..........•...

  • Page 6: Commissioning Steps

    Initial start-up, inspection, maintenance Steps - initial start-up, inspection and . . . (cont.) Commissioning steps Inspection steps Maintenance steps Page • • 21. Checking and adjusting the ignition and ionisation electrodes ................•...

  • Page 7: Further Details Regarding The Individual Steps

    Initial start-up, inspection, maintenance Further details regarding the individual steps Filling the heating system Important information Unsuitable fill water increases the level of deposits and corrosion and may lead to boiler damage. & Thoroughly flush the entire heating system prior to filling with water. &...

  • Page 8: Venting The Boiler

    Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Venting the boiler 1. Close the shut-off valves on the heating water side. 2. Connect the drain hose on valve A with a drain outlet. 3. Open valve A and fill valve in the heating return, and vent at mains pressure, until no sound of escap- ing air can be heard anymore.

  • Page 9: Filling The Siphon With Water

    Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Filling the siphon with water 1. Remove the retaining clip and siphon A. 2. Fill the siphon with water. 3. Fit siphon A and secure with the retaining clip. Language selection (if required) –...

  • Page 10: Pivoting The Control Unit Down To Carry Out Commissioning And Maintenance Work

    Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Pivoting the control unit down to carry out commissioning and maintenance work 1. Open flap A. 3. Release the side screws and pivot control unit C down with its retain- 2.

  • Page 11: Checking The Gas Type

    Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Checking the gas type 1. Enquire about the gas type and 3. If these details do not match the Wobbe index (Wo) from your local fuel provided, the burner must be mains gas or LPG supplier.

  • Page 12: Function Sequence And Possible Faults

    Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Gas restrictor allocation Internal 7 Gas type gas restric- & Natural gas E & Natural gas LL & LPG P Function sequence and possible faults For further details regarding faults, see page 74. Display screen Remedy Control unit is-...

  • Page 13: Checking Static And Supply Pressure

    Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Gas combination Fault Check the gas valve opens train (control vol- tage 230 V) and gas supply pres- sure Ionisation cur- Fault Check the ionisa- rent builds tion current, (higher than check the elec- 2 µA)
  • Page 14 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) 1. Close the gas shut-off valve. 2. Release the screw inside test nip- ple PE A on the gas combination valve, but do not remove, and con- nect the pressure gauge. 3.

  • Page 15: Checking The Co Settings

    Checking the CO settings Vitodens 333 is set up in the factory for natural gas E, and can be converted to natural gas LL or LPG P using a conversion kit. During commissioning or maintenance, check the CO level at the boiler adap- tor.
  • Page 16 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) & 6.6 to 10.0 % for natural gas E & 7.0 to 10.0 % for natural gas LL and & 8.5 to 10.5 % for LPG P. Compare the actual CO value with the above CO value ranges for the indivi- dual gas groups (check the gas group with your mains gas or LPG supplier).

  • Page 17: Setting The Max. Output

    Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) 6. Set the upper rated output. Constant temperature control unit: With a/b in the display, select & Weather-compensated control unit: With a/b in the display, select & "Full load". 7.

  • Page 18: Checking The Balanced Flue System For Soundness (Annular Gap Check)

    Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Checking the balanced flue system for soundness (annular gap check) For balanced flue systems tested together with the gas fired wall mounted boiler, some Federal States (e.g. Northrhein-Westphalia) waive the requirement for a soundness test (overpressure test) during commis- sioning by the flue gas inspector.

  • Page 19: Removing The Burner And Checking The Burner Gasket (Replace Gasket Every Two Years)

    Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Removing the burner and checking the burner gasket (replace gasket every two years) 5. Release four nuts H and remove 1. Switch OFF the control unit ON/ OFF switch and the mains electri- the burner.

  • Page 20: Checking The Burner Gauze Assembly

    Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Checking the burner gauze assembly Replace the burner gauze assembly if the wire mesh is damaged. 1. Remove electrodes A. 4. Insert a new burner gauze assem- bly with a new gasket, and secure 2.
  • Page 21 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Checking and adjusting the ignition and ionisation electro- A Ignition electrodes B Ionisation electrode 1. Check the electrodes for wear and 3. Check all clearances. If the gaps contamination. are not as specified or the electro- des are damaged, replace and 2.
  • Page 22 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Cleaning the combustion chamber/heating surfaces and installing the burner 1. If required, clean combustion chamber and heating surfaces A with a brush or flush with water. Important information Scratches on parts which are in contact with flue gases can lead to corrosion.
  • Page 23 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) 4. Check the gas connections for soundness. Danger Escaping gas leads to a risk of explosion. Check all fittings for sound- ness. 5. Connect the electrical cables/leads to each corresponding component. Checking the condensate drain and cleaning the siphon 1.
  • Page 24 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) 1. Remove cover A. 2. Pull earth cable B from connecting tab C. 3. Connect the tester (up to 5 mA) in series between connecting tab C and earth cable B. &...
  • Page 25 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) 5. Remove hard deposits that cannot be removed by a high pressure cleaner, with a chemical cleaning agent. Important information Never use hydrochloric cleaning agents. 6. Thoroughly flush the DHW cylinder after cleaning.
  • Page 26 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Checking all gas equipment for soundness at operating pres- sure Danger Escaping gas leads to a risk of explosion. Check gas equipment for soundness. Checking the ionisation current 1. Pull the line off and connect test equipment (adaptor line available as accessory).
  • Page 27 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) 4. After testing, press d. 5. Record the actual value in the ser- vice report. Matching the control unit to the heating system Note The control unit must be matched to the system equipment. Various system components are automatically recognised by the control unit, and codes are automatically set.
  • Page 28 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Required coding Address Operation with natural gas (as delivered condition) 1E:0 Operation with LPG 1E:1 System design 2 With one heating circuit with mixer M2 and low loss header Outside temperature sensor Low loss header Flow temperature sensor...
  • Page 29 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Required coding Address Operation with LPG 1E:1 System design 3 With one heating circuit without mixer A1 and one heating circuit with mixer M2 Note The volume flow of the heating circuit without mixer must be at least 30 % greater than the volume flow of the heating circuit with mixer.
  • Page 30 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Required coding Address Operation with LPG 1E:1 System design 4 With one heating circuit without mixer A1 and one heating circuit with mixer M2 with system separation Outside temperature sensor Extension kit for one heating cir- Flow temperature sensor cuit with mixer...
  • Page 31 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) System design 5 With one heating circuit with mixer M2 (with extension kit), one heating cir- cuit with mixer (with Vitotronic 050) and low loss header Outside temperature sensor Extension kit for one heating cir- Flow temperature sensor cuit with mixer...
  • Page 32 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Connecting the control unit to the LON system (only for weather-compensated control units) The LON communication module (accessories) must be plugged in. Installation instructions Communication module LON Note Data transfer via the LON system can take 2 to 3 minutes. Setting up LON user numbers Adjust the user number via coding In a LON system, the same number...
  • Page 33 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Boiler control Vitotronic 050 Vitotronic 050 Vitocom unit Sent time via LON Time received via Time received via Time received Code 7b: 1 via LON Code 81: 3 Code 81: 3 –...
  • Page 34 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) 1. Press L and d simultaneously for approx. 2 s. User check initiated. 2. Select the required user with a and b. 3. Activate checking with d. "Check" flashes until its comple- A Consecutive list number tion.
  • Page 35 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Changing slope and level 1. Modify the slope in code 1 with cod- ing address d3 (see page 39). Adjustable value: 2 to 35 (equals slope 0.2 to 3.5). 2.
  • Page 36 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Adjusting the set room temperature Standard room temperature: 1. In case of two heating circuits – select the relevant one: Press a. & 1r flashes on the display. & Select heating circuit A1 (heating circuit without mixer): Press d.
  • Page 37 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Reduced room temperature: 1. In case of two heating circuits – select the relevant one: Press a. & 1r flashes on the display. & Select heating circuit A1 (heating circuit without mixer): Press d.
  • Page 38 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Instructing the system user The system installer must hand the operating instructions to the system user and instruct them in the operation of the system. Scanning and resetting the "Maintenance" display The red fault indicator flashes when the limits set via coding address 21 and 23 have been reached.

  • Page 39: Coding

    Coding Code 1 Calling up code 1 1. Press K and L simultaneously 3. Change this value with a and b; confirm with d. The display briefly for approx. 2 s. shows "adopted", then the address 2. Select the required coding address flashes again.
  • Page 40 Coding Code 1 (cont.) Coding in Function mode Coding Possible change the as de- change livered Address: condition value Address: value Gas type 1E:0 Operation with natural 1E:1 Operation with LPG Venting/filling 2F:0 Venting program/filling 2F:1 Venting program active program inactive 2F:2 Filling program active User no.
  • Page 41 Coding Code 1 (cont.) Coding in Function mode Coding Possible change the as de- change livered Address: condition value Address: value Level A1 d4:0 Heating curve level = d4:–13 Heating curve level ad- justable from –13 to 40 d4:40 (see page 34) Codes Coding in Function mode...

  • Page 42: Code 2

    Coding Code 2 Calling up code 2 1. Press L and G simultaneously 3. Change this value with a and b; for approx. 2 s, confirm with d. confirm with d. The display briefly shows "adopted", then the address 2. Select the required coding address flashes again.
  • Page 43 Coding Code 2 (cont.) Codes Coding in Function mode Coding Possible change the as de- change livered Address: condition value Address: value System design 00 :2 System design 1: 00 :4 System design 2, 5: 1 heating circuit without 1 mixer circuit M2, with mixer A1, with DHW DHW heating heating...
  • Page 44 Coding Code 2 (cont.) Coding in Function mode Coding Possible change the as de- change livered Address: condition value Address: value 25:0 No recognition of out- 25:1 Recognition of outside side temperature sen- temperature sensor and sor or fault monitoring fault monitoring (only in i) 28:0...
  • Page 45 Coding Code 2 (cont.) Coding Internal Heating cir- Heating circuit Cylinder loading circula- cuit pump pump pump tion pump Heating cir- Heating circuit cuit without with mixer mixer Control Control funct. OFF Control funct. funct. Control Control funct. OFF funct. Control Control funct.
  • Page 46 Coding Code 2 (cont.) Coding Internal Heating cir- Heating cir- Cylinder loading pump circulation cuit pump cuit pump pump Heating cir- Heating cir- cuit without cuit with mixer mixer Control Control Control funct. Control funct. funct. funct. Control Control Control funct. OFF funct.
  • Page 47 Coding Code 2 (cont.) Coding Internal Heating cir- Heating cir- Cylinder loading pump circulation cuit pump cuit pump pump Heating cir- Heating cir- cuit without cuit with mixer mixer Control funct. OFF Control funct. Coding in Function mode Coding Possible change the as de- change livered...
  • Page 48 63:14 63:15 2 x daily 65:... Information regarding 65:0 Without diverter valve the type of diverter 65:1 Viessmann diverter valve valve (not adjustable) 65:2 Wilo diverter valve 65:3 Grundfos diverter valve 6C:100 Set speed internal DHW 6C:0 Set speed adjustable...
  • Page 49 Coding Code 2 (cont.) Coding in Function mode Coding Possible change the as de- change livered Address: condition value Address: value 77 :1 LON user number 77 :2 LON user number, adjus- table from 1 to 99: 77 :99 1-4 = boiler 5 = cascade 10 - ...
  • Page 50 LON BUS to any connected Vitotro- nic 050. 98:1 Viessmann system 98:1 System number adjusta- number (in conjunction ble from 1 to 5 with monitoring of sev- 98:5...
  • Page 51 Coding Code 2 (cont.) Coding in Function mode Coding Possible change the as de- change livered Address: condition value Address: value 9b:0 No minimum set boiler 9b:1 Set temperature adjusta- water temperature in ble from 1 to 127 °C case of external de- 9b:127 mand 9C:20...
  • Page 52 Coding Code 2 (cont.) Coding in Function mode Coding Possible change the as de- change livered Address: condition value Address: value A3:2 Outside temperature A3:-9 Heating circuit pump ON/ below 1 °C: Heating cir- OFF (see the following cuit pump ON A3:15 table) Outside temperature...
  • Page 53 Coding Code 2 (cont.) Coding in Function mode Coding Possible change the as de- change livered Address: condition value Address: value Boiler circuit, mixer circuit A4:0 With frost protection A4:1 No frost protection, ad- justment only possible if code A3: -9 has been se- lected.
  • Page 54 Coding Code 2 (cont.) Parameter address With heating circuit pump logic function: Heating A5:... circuit pump OFF, if AT > RT - 1 K AT > RT -9 K Coding in Function mode Coding Possible change the as de- change livered Address: condition...
  • Page 55 Coding Code 2 (cont.) Coding in Function mode Coding Possible change the as de- change livered Address: condition value Address: value A7:0 Without mixer econo- A7:1 With mixer economy my function function (extended heat- ing circuit pump logic): Heating circuit pump also OFF, if the mixer was closed longer than 20 min.
  • Page 56 Coding Code 2 (cont.) Coding in Function mode Coding Possible change the as de- change livered Address: condition value Address: value b0:0 With remote control: b0:1 Heating mode: Weather- Heating mode/reduced compensated mode: Weather-com- Reduced mode: With room temperature hook- pensated b0:2 Heating mode: With room...
  • Page 57 Coding Code 2 (cont.) Parameter ad- With heating circuit pump logic function: Heating cir- dress b5:... cuit pump OFF, if active RT > RT - 1 K; passive RT < RT - 2 K Actual Actual active RT > RT - 2 K;...
  • Page 58 Coding Code 2 (cont.) Coding in Function mode Coding Possible change the as de- change livered Address: condition value Address: value E5:0 Without variable E5:1 With variable speed cir- speed circuit pump cuit pump; automatic re- cognition E6:65 Maximum speed of E6:0 Maximum speed adjusta- the variable speed...
  • Page 59 Coding Code 2 (cont.) Coding in Function mode Coding Possible change the as de- change livered Address: condition value Address: value & Heat-up data with respective flow tem- peratures & Max. flow temperature achieved & Operating condition and outside tempera- ture during handover.
  • Page 60 Coding Code 2 (cont.) Coding in Function mode Coding Possible change the as de- change livered Address: condition value Address: value will be raised to the dard mode adjustable value selected as set from +10 to -60 °C room temperature, if the system is in standard room temperature mode.

  • Page 61: Resetting Coding To As Delivered Condition

    Coding Code 2 (cont.) Coding in Function mode Coding Possible change the as de- change livered Address: condition value Address: value F6:25 In "DHW only" operating mode, the internal circu- lation pump is perma- nently ON F7:25 Internal circulation F7:0 Internal circulation pump is permanently pump is permanently...

  • Page 62: Service Scans

    Service scans Service level summary Function Key combination Exit Page Press K and G simulta- Press d Temperatures, boiler cod- ing card and brief scans neously for approx. 2 s. Press K and d simulta- Press d Relay test neously for approx. 2 s. Press K and F simulta- Press d Max.

  • Page 63: Temperatures, Boiler Coding Card And Brief Scans

    Service scans Temperatures, boiler coding card and brief scans Weather-compensated control unit 1. Press K and G simultaneously 2. Select the required scan with a and b. for approx. 2 s. 3. Press d. The following values can be scanned, subject to the actual equipment level: Slope A1 –...
  • Page 64 Service scans Temperatures, boiler coding card and brief . . . (cont.) Display screen Brief scan System design 1 to Display Max. demand temperature KM BUS Display in accor- users dance with the rele- vant design Flow Software Software Software Software Software switch...
  • Page 65 Service scans Temperatures, boiler coding card and brief . . . (cont.) Display screen Brief scan Heating circuit 1 Heating circuit 2 (boiler circuit A1) (mixer circuit M2) Remote Software Remote Software control version control version 0: excl. Remote 0: excl. Remote 1: Vito- control...
  • Page 66 Service scans Temperatures, boiler coding card and brief . . . (cont.) Display screen Brief scan Flow System de- Software version Software switch po- sign, dis- Control unit version sition play in Program- accordance ming unit with the de- sign Software Software version Software...

  • Page 67: Checking Outputs (Relay Test)

    Service scans Temperatures, boiler coding card and brief . . . (cont.) Display screen Brief scan Variable Software speed version pump Variable 0: excl. speed pump 1: Wilo 2: Grund- Checking outputs (relay test) Weather-compensated control unit 1. Press K and d simultaneously 2.
  • Page 68 Service scans Checking outputs (relay test) (cont.) Display Description Solar pump ON Vitosolic Constant temperature control units 1. Press K and d simultaneously 2. Select the relay outputs with a and b. for approx. 2 s. Relay test is activated. 3.

  • Page 69: Scanning Operating Conditions And Sensors

    Service scans Scanning operating conditions and sensors Weather-compensated control unit 1. In case of two heating circuits – 2. Press c. select the relevant one: Press a. & 3. Select the required operating con- dition scan with a or b. 1r flashes on the display.
  • Page 70 Service scans Scanning operating conditions and sensors (cont.) Operating condition display Description (subject to system equip- ment level) Time Date Burner OFF or ON Output sÖ Int. pump OFF or ON Int. output OFF or ON Internal extension Heating pump OFF or ON External extension or extension kit for one heat- ing circuit with mixer installed Cylinder loading pump OFF...
  • Page 71 Service scans Scanning operating conditions and sensors (cont.) Operating condition display (sub- Description ject to system equipment level) Actual value – collector sensor 70 °C/°F 263572 Burner hours run Burner starts 030529 Hours run – solar circuit pump 001417 002850 Solar energy in kW/h Display in °F if the relevant code has been selected and with the fourth display digit.

  • Page 72: Troubleshooting

    Troubleshooting Downloading fault codes history The most recent 10 faults are saved and may be called up. 1. Press G and d simultaneously for approx. 2 s. 2. Call up the individual fault codes with a or b. Fault code order Fault code most recent 10th most recent...
  • Page 73 Troubleshooting Calling up current fault codes (cont.) Control unit faults 1. Find current fault with c. 2. Select additional fault codes with a and b. 3. Acknowledge fault The fault can be acknowledged with d. The fault message in the display will be hidden, but red fault indicator continues to flash.

  • Page 74: Checking And Acknowledging Faults

    Troubleshooting Calling up current fault codes (cont.) 4. E in the display indicates that the burner control unit is locked out. After the fault has been removed, acknowledge by pressing reset E. Fault display design Plain text fault display & Burner control unit &...
  • Page 75 Troubleshooting Checking and acknowledging faults (cont.) Note The fault can be acknowledged with d. The fault message in the dis- play will be hidden, but red fault indi- cator U continues to flash. A new fault message will be displayed if an Constant temperature control unit acknowledged fault is not removed by the following morning.
  • Page 76 Troubleshooting Checking and acknowledging faults (cont.) Display Const. Weat- System Cause Remedy fault code character- comp. istics Burner Boiler temperature Check boiler blocked sensor shorted out temperature sensor (see page 84) Boiler temperature sensor lead break Mixer Heating circuit M2 Check flow closes flow temperature...
  • Page 77 Troubleshooting Checking and acknowledging faults (cont.) Display Const. Weat- System Cause Remedy fault code character- comp. istics Cylinder tempera- ture sensor lead break Control Solar control unit See solar mode fault message control unit service in- structions Control Faulty program- Replace pro- mode ming unit...
  • Page 78 Troubleshooting Checking and acknowledging faults (cont.) Display Const. Weat- System Cause Remedy fault code character- comp. istics Control Communication Check con- fault – Vitotrol re- mode with- nections, out remote mote control heat- cable, coding control ing circuit A1 address A0 and remote control DIP switches...
  • Page 79 Troubleshooting Checking and acknowledging faults (cont.) Display Const. Weat- System Cause Remedy fault code character- comp. istics Control Communication Check coding fault – variable mode, address E5 max. pump speed heating cir- settings; speed cuit pump, heating check heating circuit A1 circuit pump DIP switch settings...
  • Page 80 Troubleshooting Checking and acknowledging faults (cont.) Display Const. Weat- System Cause Remedy fault code character- comp. istics Burner Internal fault Check ionisa- blocked tion electrode and leads. Check flue gas system for sound- ness. Press E. Burner in Flue gas/air supply Check flue fault state system blocked...
  • Page 81 Troubleshooting Checking and acknowledging faults (cont.) Display Const. Weat- System Cause Remedy fault code character- comp. istics Burner in Flame signal is al- Check ionisa- fault state ready present at tion electrode burner start and leads. Press E. Burner in No flame signal is Check ionisa- fault state...
  • Page 82 Troubleshooting Checking and acknowledging faults (cont.) Display Const. Weat- System Cause Remedy fault code character- comp. istics Burner in Fan not at standstill Check fan, fault state check fan cables, check fan control. Press E. Burner Burner control unit Check igni- blocked or boiler coding tion electro-...

  • Page 83: Repairs

    Troubleshooting Repairs Checking the outside temperature sensor (weather-compen- sated control unit) 1. Pull plug X3 from the control unit. 2. Test the resistance of the outside temperature sensor across term- inals X3.1 and X3.2 on the discon- nected plug and compare with the curve.
  • Page 84 Troubleshooting Repairs (cont.) Checking boiler temperature sensor, cylinder temperature sensor or flow temperature sensor for low loss header...
  • Page 85 Troubleshooting Repairs (cont.) 1. Boiler temperature sensor: Pull the leads from boiler temperature sensor A and measure the resis- tance. Cylinder temperature sensor: Pull plug % from the cable harness on the control unit and measure the resistance. Flow temperature sensor: Pull plug X3 from the control unit and measure the resistance across terminals X3.4 and X3.5.
  • Page 86 Troubleshooting Repairs (cont.) Checking loading temperature sensor 1. Pull the cables off loading tempera- ture sensor A. 2. Check the sensor resistance and compare actual values with the curve. 3. Replace the sensor in case of severe deviation. Danger The loading temperature sensor is immersed in the heating water (risk of scald- ing).
  • Page 87 Troubleshooting Repairs (cont.) Checking the flue gas temperature sensor The flue gas temperature sensor locks out the boiler when the permissible flue gas temperature is exceeded. Reset the interlock after the flue gas system has cooled down, by pressing reset button E. 1.
  • Page 88 Troubleshooting Repairs (cont.) Checking plate heat exchanger 1. Shut off and drain the boiler on the 5. Check the secondary side for scal- primary and the secondary side. ing and, if necessary, replace the plate heat exchanger. 2. Release the side closures and pivot the control unit forward.
  • Page 89 Troubleshooting Repairs (cont.) Check the temperature limiter If the burner control unit cannot be reset after a fault shutdown, although the boiler water temperature is below approx. 75 °C: & Pull the leads from temperature lim- iter A. & Check the continuity of the tempera- ture limiter with a multimeter.
  • Page 90 Troubleshooting Repairs (cont.) 1. Pull off electrical plug A. Checking O-rings: 2. Remove sensor B by pulling it upwards. 3. Ensure that both O-rings C are properly inserted into aperture adaptor retainers D. 4. Insert the sensor with connection nipples into the gas combination valve adaptor and push in until it clicks into place.
  • Page 91 Troubleshooting Repairs (cont.) Checking fuse 3. Remove cover A. 1. Switch OFF the mains power. 2. Release the lateral closures and 4. Check fuse F1. pivot the control unit down.
  • Page 92 Troubleshooting Repairs (cont.) Extension kit for heating circuit with mixer Checking the rotational direction of the mixer motor 1. Switch OFF the motor and restart it at the main ON/OFF switch. The device will carry out the following self-test: & Mixer close (150 s) &...
  • Page 93 Troubleshooting Repairs (cont.) Checking Vitotronic 050 (accessory) Vitotronic 050 is connected with the control unit via the LON system. To test the connection, implement a user check on the boiler control unit (see page 33).

  • Page 94: Function Description

    Function description Constant temperature control unit Heating mode The cylinder is then loaded up to the The set boiler water temperature will set DHW temperature. Heating stops be maintained in the "Central heating when the set temperature has been and DHW heating" G program, reached at the cylinder temperature when a demand is raised by the room sensor and at the loading temperature...
  • Page 95 Function description Constant temperature control unit (cont.) A Heating programs F Setting values B Comfort mode G DHW temperature C Information H Emissions test function D Basic settings K Boiler water temperature E Confirmation/acknowledgement...

  • Page 96: Weather-Compensated Control Unit

    Function description Weather-compensated control unit Heating mode The control unit determines a set boi- The cylinder is then loaded up to the ler water temperature subject to out- set DHW temperature. Heating stops side temperature or room temperature when the set temperature has been (if a room temperature-dependent reached at the cylinder temperature remote control is connected) and the...
  • Page 97 Function description Weather-compensated control unit (cont.) A Heating circuit time program H Party mode B DHW time program K Basic settings L Confirmation/acknowledgement and DHW circulation (if connected M Setting values to the control unit) C Holiday program N DHW temperature D Information O Emissions test function E Heating programs...

  • Page 98: Internal Extension H1

    Function description Internal extension H1 Internal extension H1 The internal extension is integrated An external safety valve can be con- nected to connection gD. into the control unit housing. The cylinder loading pump is connected to relay output sK.

  • Page 99: Extensions For External Connections (Accessories)

    Function description Extensions for external connections (accessories) Internal extension H2 The internal extension is integrated Set coding address 53 to 3. into the control unit housing. The An interlock for extractors can be con- nected to connection aBJ. cylinder loading pump is connected to relay output sK.
  • Page 100 Function description Extensions for external connections . . . (cont.) External extension H1 & The external extension is connected External blocking to the boiler control unit via the KM (terminals 2 - 3) & BUS. The following functions can be External demand controlled or processed simulta- (terminals 1 - 2)
  • Page 101 Function description Extensions for external connections . . . (cont.) External extension H2 & The external extension is connected External blocking to the boiler control unit via the KM (terminals 2 - 3) & BUS. The following functions can be External demand controlled or processed simulta- (terminals 1 - 2)

  • Page 102: Control Functions

    Function description Control functions External operating mode changeover The "External operating mode chan- geover" function is connected via external extension input aVD. With coding address 91 you can select the heating circuit to which the operating mode changeover should apply: Coding Operating mode changeover affects: 91:0...
  • Page 103 Function description Control functions (cont.) External blocking The "External blocking" function is In coding address 32 you can select connected via external extension the influence the "Ext. blocking" sig- input aVD. nal should have on the connected cir- culation pumps. External demand The "External demand"...
  • Page 104 Function description Control functions (cont.) The diverter valve can be moved into its central position via coding address 2F:2. The system can be filled com- pletely if the control unit is switched OFF in this position. Filling with the control unit switched ON If the system is to be filled with the control unit switched ON, the diverter valve is moved into its central position...
  • Page 105 Function description Control functions (cont.) Temperature profile: Diagram 2 (ZV parquet and flooring technology) code F1:2 Temperature profile: Diagram 3 code F1:3 Temperature profile: Diagram 4 code F1:4...
  • Page 106 Function description Control functions (cont.) Temperature profile: Diagram 5 code F1:5 Temperature profile: Factory-set code F1:6 to F1:15...

  • Page 107: Designs

    Designs Connection and wiring diagrams – internal connections Main PCB Flue gas temperature sensor § dÖ Boiler temperature sensor Step motor for diverter valve Loading temperature sensor Thermocouple Cylinder temperature sensor Ignition unit Ionisation electrode...
  • Page 108 Designs Connection and wiring diagrams – internal . . . (cont.) a-ÖA Fan motor Air pressure sensor...

  • Page 109: Connection And Wiring Diagrams - External Connections

    Designs Connection and wiring diagrams – external connections Main PCB Optolink Mains supply unit Burner control unit...
  • Page 110 Designs Connection and wiring diagrams – external . . . (cont.) Programming unit Cylinder temperature sensor sÖ Coding card Internal circulation pump Connection adaptor Loading pump Communication module LON Gas solenoid valve fÖ Internal extension H1 or H2 Mains power supply Mains power supply –...

  • Page 111: Parts Lists

    Parts lists Parts lists Spare parts information Quote the type and serial no. (see type plate) and the item no. of the required part (as per this parts list). Obtain standard parts from your local supplier. 001 Heat exchanger connection pipe 036 Plate heat exchanger 037 Gasket set –...
  • Page 112 Parts lists Parts lists (cont.) 125 Fuse holder 039 Heat conducting paste 151 Outside temperature sensor 062 Burner maintenance set 152 Cylinder temperature sensor 063 Set of small burner parts 115 Adaptor – ionisation current test 153 Flue gas temperature sensor 154 Thermocouple cable 155 Temperature sensor...
  • Page 113 Parts lists Parts lists (cont.)
  • Page 114 Parts lists Parts lists (cont.)
  • Page 115 Parts lists Parts lists (cont.)
  • Page 116 Parts lists Parts lists (cont.)
  • Page 117 Parts lists Parts lists (cont.)

  • Page 118: Commissioning/Service Reports

    Commissioning/service reports Commissioning/service reports Setting and test values Set value Initial start-up Date: Static pressure mbar max. 57.5 mbar Supply pressure (flow pressure) = for natural gas E mbar 17.4 to 57.5 mbar = for natural gas LL mbar 17.4 to 57.5 mbar = for LPG mbar...
  • Page 119 Commissioning/service reports Commissioning/service reports (cont.) Maintenance/ser- Maintenance/ Maintenance/ Maintenance/ser- vice service service vice...
  • Page 120 Commissioning/service reports Commissioning/service reports (cont.) Setting and test values Set value Maintenance/ service Date: Static pressure mbar max. 57.5 mbar Supply pressure (flow pressure) = for natural gas E mbar 17.4 to 57.5 mbar = for natural gas LL mbar 17.4 to 57.5 mbar = for LPG...
  • Page 121 Commissioning/service reports Commissioning/service reports (cont.) Maintenance/ser- Maintenance/ Maintenance/ Maintenance/ser- vice service service vice...
  • Page 122 Commissioning/service reports Commissioning/service reports (cont.) Setting and test values Set value Maintenance/ service Date: Static pressure mbar max. 57.5 mbar Supply pressure (flow pressure) = for natural gas E mbar 17.4 to 57.5 mbar = for natural gas LL mbar 17.4 to 57.5 mbar = for LPG...
  • Page 123 Commissioning/service reports Commissioning/service reports (cont.) Maintenance/ser- Maintenance/ Maintenance/ Maintenance/ser- vice service service vice...

  • Page 124: Specification

    Specification Specification Rated voltage: 230 V~ Electronic tempera- 82 °C Rated frequency: 50 Hz ture limiter setting: Rated current : 6.3 A~ Temperature limiter 100 °C (fixed) Safety class: setting: Protection level: IP X 4 D to Mains fuse: max. 16 A EN 60529 Power consumption Permissible ambient temperature...

  • Page 125: Certificates

    Certificates Declaration of conformity Declaration of conformity for Vitodens 333 We, Viessmann Werke GmbH & Co KG, D-35107 Allendorf, declare as sole responsible body, that the product Vitodens 333 conforms to the following stan- In accordance with the following di-...

  • Page 126: Manufacturer's Certificate According To The 1St Bimschv [Germany]

    Certificates Manufacturer's certificate according to the 1st BImSchV [Germany] We, Viessmann Werke GmbH & Co KG, D-35107 Allendorf, confirm that the fol- lowing product meets the NO limits specified by 1st BImSchV Paragraph 7 (2): Vitodens 333 Allendorf, 12.10.04 Viessmann Werke GmbH&Co KG...

  • Page 127: Keyword Index

    Keyword index Keyword index Adjusting the room temperature Fault history ........Anode replacement Fault message 72, 74...
  • Page 128 Keyword index Keyword index (cont.) Operating conditions scanning Safety chain ........Operating mode changeover Scanning .
  • Page 132 Applicability Compact gas fired condensing boi- Type WS3A 4.2 to 13 kW from serial no. 7185 299 4 00001 Viessmann Limited Hortonwood 30, Telford, TF1 7YP, GB Telephone: +44 1952 675000 Fax: +44 1952 675040 www.viessmann.co.uk...

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Ws3a

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