1. Manuals
  2. Brands
  3. Viessmann Manuals
  4. Boiler
  5. VITODENS 200
  6. Service instructions manual

Viessmann Vitodens 200 Service Instructions Manual

Type wb2a, 8.8 to 20.0 kw wall mounted gas fired condensing boiler natural gas and lpg version
Hide thumbs Also See for Vitodens 200:
Table of Contents

Advertisement

Quick Links

Download this manual See also: Service Manual, Start-up and Service Instructions
VIESMANN
Service instructions
for contractors
Vitodens 200
Type WB2A, 8.8 to 20.0 kW
Wall mounted gas fired condensing boiler
Natural gas and LPG version
For applicability, see the last page
VITODENS 200
Please keep safe.
5692 580 GB
4/2006

Advertisement

Table of Contents
loading

Related Manuals for Viessmann Vitodens 200

Summary of Contents for Viessmann Vitodens 200

  • Page 1 VIESMANN Service instructions for contractors Vitodens 200 Type WB2A, 8.8 to 20.0 kW Wall mounted gas fired condensing boiler Natural gas and LPG version For applicability, see the last page VITODENS 200 Please keep safe. 5692 580 GB 4/2006...
  • Page 2 Safety instructions Safety instructions Please follow these safety instructions closely to prevent accidents and material losses. Safety instructions explained the Code of Practice of relevant trade associations, Danger all current safety regulations as This symbol warns against the defined by DIN, EN, DVGW, TRGI, risk of injury.
  • Page 3 For replacements, use only ori- ginal spare parts from Viessmann or those which are approved by Viessmann.

  • Page 4: Table Of Contents

    Index Index Commissioning, inspection, maintenance Steps - commissioning, inspection and maintenance ........Further details regarding the individual steps ..........Coding Code 1......................35 Code 2......................38 Resetting codes to their delivered condition ..........57 Service scans Service level overview ................58 Temperatures, boiler coding card and brief scans ........
  • Page 5 Commissioning, inspection, maintenance Steps - commissioning, inspection and maintenance For further information regarding the individual steps, see the page indicated Commissioning steps Inspection steps Maintenance steps Page 1. Filling the heating system ..........2.
  • Page 6 Commissioning, inspection, maintenance Steps - commissioning, inspection and . . . (cont.) Commissioning steps Inspection steps Maintenance steps Page 20. Checking the condensate drain and cleaning the siphon ..................21.

  • Page 7: Filling The Heating System

    Only use fill water of potable quality. Soften fill water with a hardness above 3.0 mol/m , e.g. with a small softening system for heating water (see the Viessmann Vitoset price- list). An antifreeze additive suitable for heating systems can be mixed with the fill water.

  • Page 8: Venting The Boiler

    Commissioning, 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 between top valve B and a drain outlet. 3. Open valves A and B, and vent at mains pressure until no sound of escaping air can be heard.

  • Page 9: Filling The Siphon With Water

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) 2. Activate the venting program via 3. Check the system pressure. coding address "2F:1" in code 1. Note To call up code 1 and for setting the coding address, see page 35. For function and sequence of the venting program, see page 94.

  • Page 10: Selecting The Language (If Required) - Only For Weather-Compensated Control Units

    2. d to confirm; wait approx. 4 s. Checking the gas type Note In the delivered condition, the Vitodens 200 is set up for natural gas E. 1. Check the gas category and 3. Adjust the gas type via coding Wobbe index (Wo) with your mains address "1E"...

  • Page 11: Gas Type Conversion

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Gas type conversion Gas restrictor installation instructions Gas restrictor allocation Gas type Internal 7 gas restric- Natural gas Natural gas LPG P Function sequence and possible faults Display screen Measures Control unit is- Increase set sues heat de-...
  • Page 12 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Ignition Fault F4 Check ignition module (control voltage 230 V across plugs "X2.1" and "X2.2") Gas combination Fault F4 Check the gas valve opens combination valve (control voltage 230 V); check the gas supply pres- sure Ionisation cur-...

  • Page 13: Checking Static And Supply Pressure

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Checking static and supply pressure Danger CO build-up as a result of an incorrect burner setup can have serious health implications. Carry out a CO test prior to, and after, work on gas equipment. Operation with LPG Flush the LPG tank twice during commissioning/replacement.

  • Page 14: Setting The Maximum Output

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Danger Gas escaping from the test port leads to a risk of explo- sion. Check for soundness. Open the gas shut-off valve, start the boiler and check the soundness of test port A. Supply (flow) Supply (flow) Measures...

  • Page 15: Checking The Balanced Flue System For Soundness (Annular Gap Check)

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Checking the balanced flue system for soundness (annular gap check) A Combustion air port For balanced flue systems tested The flue pipe is deemed to be sound if together with the wall mounted gas the CO concentration in the combus- fired boiler, some authorities waive...

  • Page 16: Burner Removal

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Burner removal 1. Switch OFF the control unit ON/ 4. Release the gas supply pipe F fit- OFF switch and the power supply. ting. 2. Close the gas shut-off valve and 5.

  • Page 17: Checking The Burner Gasket And The Burner Gauze Assembly

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Checking the burner gasket and the burner gauze assembly Check burner gasket A for damage. Generally replace the burner gasket every 2 years. Replace the burner gauze assembly if it is damaged. 1.

  • Page 18: Checking And Adjusting The Ignition And Ionisation Electrodes

    Commissioning, 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 clearances. If the gaps are contamination. not as specified or the electrodes are damaged, replace and align the 2.
  • Page 19 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) 1. If required, clean heating surfaces A with a brush or flush with water. Apply a solvent-/potassium-free cleaning agent if residues remain: Remove soot deposits with alka- line cleaning agents with addi- tional surfactants (e.g.

  • Page 20: Checking The Condensate Drain And Cleaning The Siphon

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Checking the condensate drain and cleaning the siphon 1. Check that the condensate can drain freely at the siphon. 2. Remove the retaining clip and the siphon. 3. Clean the siphon. 4.

  • Page 21: Checking All Gas Equipment For Soundness At Operating Pressure

    Flue gas emissions test The Vitodens 200 is set up in the factory for natural gas E and can be converted to natural gas LL or LPG P with the aid of a conversion kit. During commissioning or maintenance, check the CO level at the boiler flue outlet.
  • Page 22 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Weather-compensated control Weather-compensated control unit: unit: K + d press simultaneously: press: "Relay test" and then "Full load" is shown. "Base load" is shown. 7. Check the CO content. Should the 4.

  • Page 23: Checking The Ionisation Current

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Checking the ionisation current 2. Adjusting the upper output: Constant temperature control unit: K + d press simultaneously: "1" is shown. press: "2" is shown. Weather-compensated control unit: K + d press simultaneously: "Relay test"...

  • Page 24: Matching The Control Unit To The Heating System

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Matching the control unit to the heating system Note Subject to the equipment level, the control unit must be matched to the system. Various system components are recognised automatically by the control unit and the relevant codes are adjusted automatically.
  • Page 25 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) System version 2 One heating circuit without mixer A1 and one heating circuit with mixer M2 (with/without DHW heating) 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 26 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) System version 3 One heating circuit without mixer A1 and one heating circuit with mixer M2 with system separation (with/without DHW heating) Outside temperature sensor Extension kit for one heating ? M2 Flow temperature sensor circuit with mixer M2 Cylinder temperature sensor...
  • Page 27 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Outside temperature sensor sÖ M2 Heating circuit pump heating ? M1 Flow temperature sensor heat- circuit with mixer M2 ing circuit with mixer M1 Vitotronic 050 ? M2 Flow temperature sensor heat- Extension kit for one heating ing circuit with mixer M2 circuit with mixer M2...

  • Page 28: Adjusting The Heating Curves (Only For Weather-Compensated Control Units)

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Adjusting the heating curves (only for weather-compensated control units) The heating curves illustrate the rela- The room temperature, again, tionship between the outside tem- depends on the boiler water or the perature and the boiler water or flow flow temperature.
  • Page 29 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Changing the slope and level 1. Slope: Change with coding address "d3" in code 1. Setting range 2 to 35 (equals slope 0.2 to 3.5). 2. Level: Change with coding address "d4" in code 1.
  • Page 30 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Adjusting the set room temperature 5. Adjust the set day temperature with Standard room temperature rotary selector "ts". The value will be automatically accepted after approx. 2 s. Accordingly, the heating curve is adjusted along set room tempera- ture axis C, which results in modi- fied start/stop characteristics of the...

  • Page 31: Connecting The Control Unit To The Lon System (Only For Weather-Compensated Control Units)

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) 2. d to select heating circuit A1 5. E Call up the set night tem- (heating circuit without perature. mixer) 6. a/b Change the value. 3. a "2r" flashes. 7. d Confirm the value.
  • Page 32 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Boiler control unit Vitotronic 050 Vitotronic 050 Vitocom Control unit trans- Control unit re- Control unit re- Device re- mits the time ceives the time ceives the time ceives the Coding address Set coding address Set coding address...

  • Page 33: Instructing The System User

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Preconditions: 2. a/b for the required user. The control unit must be pro- grammed as fault manager (coding 3. d Check is enabled address "79:1") "Check" flashes until its The LON user number must be pro- completion.
  • Page 34 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) On a constant temperature control unit: The defaulted hours run or the defaulted interval with clock symbol "u" (sub- ject to setting) On a weather-compensated control unit: "Maintenance" Note Set coding address "24:1" and then coding address "24:0" if a service is carried out before "Maintenance"...
  • Page 35 Coding Code 1 Calling up code 1 Note 2. a/b for the required coding On weather-compensated control address; the address units, codes are displayed as plain flashes. text. Codes that are irrelevant due to the 3. d to confirm. system equipment level or the set- ting of other codes will not be dis- 4.
  • Page 36 Coding Code 1 (cont.) Overview Coding Coding in the delivered condition Possible change System design 00 :1 System version 1: 00 :2 System version 1: 1 heating circuit without 1 heating circuit without mixer A1, without DHW mixer A1, with DHW heat- heating 00 :3 System version 4:...
  • Page 37 Coding Code 1 (cont.) Coding in the delivered condition Possible change User no. 77:1 LON user number 77:2 LON user number, adjus- table from 1 to 99: 77:99 1 - 4 = Boiler 5 = Cascade 10 - ... = Vitotronic 050 99 = Vitocom Note Allocate each number...

  • Page 38: Code

    Coding Code 2 Calling up code 2 Note On weather-compensated control units, codes are displayed as plain text. Codes that are irrelevant due to the system equipment level or the set- ting of other codes will not be dis- played. Press the following keys: 1.
  • Page 39 Coding Code 2 (cont.) The areas are scanned in the following sequence with a/b: Function area Coding addresses System design Boiler/burner 06 to 54 56 to 73 General 76 to 9F Heating circuit A1 (heating circuit without A0 to Fb mixer) Heating circuit with mixer M2 A0 to Fb...
  • Page 40 Coding Code 2 (cont.) Coding Coding Coding in the delivered condition Possible change System design 00 :1 System version 1: 00 :2 System version 1: 1 heating circuit without 1 heating circuit without mixer A1, without DHW mixer A1, with DHW heat- heating 00 :3 System version 4:...
  • Page 41 Coding Code 2 (cont.) Coding in the delivered condition Possible change 24:0 The maintenance dis- 24:1 Maintenance display (the play has been reset value is displayed auto- matically) 25:0 With outside tempera- 25:1 Outside temperature sen- ture sensor for constant sor and fault monitoring temperature control recognised...
  • Page 42 Coding Code 2 (cont.) Coding Internal circu- Heating circuit Heating circuit Cylinder pri- lation pump pump pump mary pump Heating circuit Heating circuit without mixer with mixer Control funct. Control funct. Control funct. Control funct. Control funct. Control funct. Control funct. Control funct.
  • Page 43 Coding Code 2 (cont.) Coding Internal Heating cir- Heating cir- Cylinder primary pump circulation cuit pump cuit pump pump Heating cir- Heating cir- cuit without cuit with mixer mixer Control Control funct. funct. Control funct. Control Control funct. Control funct. funct.
  • Page 44 Coding Code 2 (cont.) Coding in the delivered condition Possible change 53:1 Function connection sK 53:0 Function connection sK: of the internal exten- Central fault sion: DHW circulation 53:2 Function connection sK: pump External heating circuit pump (heating circuit A1) 53:3 Function connection sK: External cylinder primary...
  • Page 45 2 x daily 65:... Information regarding 65:0 Without diverter valve the type of diverter 65:1 Diverter valve by valve (not adjustable) Viessmann 65:2 Diverter valve by Wilo 65:3 Diverter valve by Grund- 67:40 With the Vitosolic: 67:0 Without third set DHW...
  • Page 46 Coding Code 2 (cont.) Coding in the delivered condition Possible change 73:0 DHW circulation pump: 73:1 During the time program "ON" in accordance 1x/h "ON" for 5 min with the time program 73:6 up to 6x/h "ON" for 5 min (only for weather-com- 73:7 Permanently "ON"...
  • Page 47 Coding Code 2 (cont.) Coding in the delivered condition Possible change 81:1 Automatic summer/win- 81:0 Manual summer/winter ter time changeover time changeover 81:2 The radio clock module will be recognised auto- matically 81:3 With LON communication module: The control unit receives the time 88:0 Temperature displayed...
  • Page 48 Coding Code 2 (cont.) Coding in the delivered condition Possible change 98:1 Viessmann system 98:1 System number adjusta- number (in conjunction ble from 1 to 5 with monitoring several 98:5 systems via Vitocom 300) 9b:0 No minimum set boiler 9b:1...
  • Page 49 Coding Code 2 (cont.) Coding in the delivered condition Possible change A3:2 Outside temperature A3:-9 Heating circuit pump below 1 °C: Heating cir- "ON/OFF" (see the fol- cuit pump "ON" A3:15 lowing table) Outside temperature above 3 °C: Heating cir- cuit pump "OFF"...
  • Page 50 Coding Code 2 (cont.) Parameter Heating circuit pump Address A3:... "ON" at "OFF" at 1 °C 3 °C 14 °C 16 °C Coding in the delivered condition Possible change Boiler circuit, mixer circuit A4:0 With frost protection A4:1 No frost protection; this (only for weather-com- setting is only possible if pensated control units)
  • Page 51 Coding Code 2 (cont.) Coding in the delivered condition Possible change Boiler circuit, mixer circuit A6:36 Extended economy A6:5 Extended economy mode function disabled (only is enabled, i.e. the burner for weather-compen- A6:35 and heating circuit pump sated control units) will be switched OFF and the mixer will be closed at a variable value, which is...
  • Page 52 Coding Code 2 (cont.) Coding in the delivered condition Possible change A9:7 With pump idle time: A9:0 Without pump idle time Heating circuit pump A9:1 With pump idle time, ad- "OFF" if the set value justable from 1 to 15 changes through a A9:15 change in operating...
  • Page 53 Coding Code 2 (cont.) Parameter ad- With heating circuit pump logic function: Heating cir- dress b5:... cuit pump OFF, if enabled RT > RT + 5 K; disabled RT < RT + 4 K actual actual enabled RT > RT + 4 K;...
  • Page 54 Coding Code 2 (cont.) Coding in the delivered condition Possible change E1:1 With remote control: E1:0 Set day temperature ad- The set day tempera- justable from 3 to 23 °C ture is adjustable at the E1:2 Set day temperature ad- remote control unit from justable from 17 to 37 °C 10 to 30 °C (only for...
  • Page 55 Coding Code 2 (cont.) Coding in the delivered condition Possible change E9:45 Speed of the external E9:0 Speed adjustable from 0 variable speed heating to 100 % of the maximum circuit pump 45 % of the E9:100 speed during operation max.
  • Page 56 Coding Code 2 (cont.) Coding in the delivered condition Possible change F7:25 In "Standby mode", the F7:0 In "Standby mode", the internal circulation internal circulation pump pump is permanently is permanently OFF ON (only for constant F7:1 In "Standby mode", the temperature control internal circulation pump units)

  • Page 57: Resetting Codes To Their Delivered Condition

    Coding Code 2 (cont.) Coding in the delivered condition Possible change Fb:30 Duration for raising the Fb:0 Duration adjustable from set boiler water tem- 0 to 300 min; perature or the set flow Fb:150 1 step 2 min) temperature (see cod- ing address "FA") 60 min.

  • Page 58: Service Scans Service Level Overview

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

  • Page 59: Temperatures, Boiler Coding Card And Brief Scans

    Service scans Temperatures, boiler coding card and brief scans Weather-compensated control unit Press the following keys: 2. a/b for the required scan. 1. K + G simultaneously for 3. d Scanning is completed. approx. 2 s. The following values can be scanned, subject to the actual system equip- ment level: Display screen Explanation...
  • Page 60 Service scans Temperatures, boiler coding card and brief . . . (cont.) Display screen Brief scan Software Software Software Software Software version version version version version Program- Mixer Solar External ming unit exten- control module extension sion unit 0: no 0: no exter- 0: no 0: no...
  • Page 61 Service scans Temperatures, boiler coding card and brief . . . (cont.) Constant temperature control unit Press the following keys: 2. a/b for the required scan. 1. K + G simultaneously for 3. d Scanning is completed. approx. 2 s. The following values can be scanned, subject to the actual system equip- ment level: Display screen...

  • Page 62: Checking Outputs (Relay Test)

    Service scans Temperatures, boiler coding card and brief . . . (cont.) Display screen Brief scan Variable Software speed version pump Variable 0 w/o speed pump 1 Wilo 0: no vari- 2 Grundfos able speed pump Checking outputs (relay test) Weather-compensated control unit Press the following keys: 2.

  • Page 63: Scanning Operating Conditions And Sensors

    Service scans Checking outputs (relay test) (cont.) Constant temperature control unit Press the following keys: 2. a/b for the required relay out- put. 1. K + d simultaneously for approx. 2 s. 3. d Relay test is completed. The following relay outputs can be controlled, subject to the actual system equipment level: Display screen Explanation...
  • Page 64 Service scans Scanning operating conditions and sensors (cont.) The following operating conditions can be scanned, subject to the actual system equipment level for heating circuit A1 and heating circuit with mixer M2: Display screen Explanation User no. Encoded user no. in the LON system Holiday program If a holiday program has been entered Departure date...
  • Page 65 Service scans Scanning operating conditions and sensors (cont.) Constant temperature control unit Press the following keys: 2. a/b for the required operating condition. 1. c press. 3. d Scanning is completed. The following operating conditions can be scanned, subject to the actual system equipment level: Display screen Explanation...

  • Page 66: Troubleshooting Fault Display

    Troubleshooting Fault display Fault display layout A Fault display C Fault number B Fault symbol D Fault code The red fault indicator flashes for A fault in the burner control unit every fault. causes the display to show "E". Constant temperature control unit In case of faults, the fault code and fault symbol is displayed at the pro- gramming unit...
  • Page 67 Troubleshooting Fault display (cont.) Collector sensor Remote control Solar DHW sensor User fault Checking and acknowledging faults Note If an acknowledged fault is not removed, the fault message will be re- displayed: With a constant temperature control unit after 24 h With a weather-compensated con- trol unit at 7:00 h the next day Constant temperature control unit...

  • Page 68: Fault Codes

    Troubleshooting Fault display (cont.) Calling up fault codes from the fault memory (fault history) The 10 most recent faults are saved Press the following keys: and may be scanned. The faults are ordered by date, thus 1. G + d simultaneously for the most recent fault is fault number 1.
  • Page 69 Troubleshooting Fault codes (cont.) Display Const. Weath.- System char- Cause Measures fault comp. acteristics code Regulates System flow Check the low without flow temperature loss header sen- temperature sensor lead sor (see page 79). sensor (low broken loss header) Burner Boiler water Check the boiler blocked...
  • Page 70 Troubleshooting Fault codes (cont.) Display Const. Weath.- System char- Cause Measures fault comp. acteristics code Control mode Collector Check the sensor temperature at the Vitosolic. sensor short circuit; con- nects to the Vitosolic at Control mode Cylinder Check the sensor temperature at the Vitosolic.
  • Page 71 Troubleshooting Fault codes (cont.) Display Const. Weath.- System char- Cause Measures fault comp. acteristics code Control mode Solar control Check the solar unit fault; control unit (see displayed if a solar control unit fault without service instruc- fault code tions). occurs at the solar control unit...
  • Page 72 Troubleshooting Fault codes (cont.) Display Const. Weath.- System char- Cause Measures fault comp. acteristics code Mixer M2 reg- Communica- Check the exten- ulates to a tion fault - sion kit connec- flow tempera- extension kit tions and coding. ture of 20 °C. for heating Start the exten- circuit with...
  • Page 73 Troubleshooting Fault codes (cont.) Display Const. Weath.- System char- Cause Measures fault comp. acteristics code Control mode, Communica- Check coding ad- max. pump tion fault - dress "E5" set- speed external vari- tings; check the able speed DIP switch set- heating cir- tings in the pump cuit pump,...
  • Page 74 Troubleshooting Fault codes (cont.) Display Const. Weath.- System char- Cause Measures fault comp. acteristics code Control mode Room tem- Check the room without room perature temperature sen- influence sensor, heat- sor, heating cir- ing circuit cuit with mixer with mixer M2 shorted Control mode Room tem-...
  • Page 75 Troubleshooting Fault codes (cont.) Display Const. Weath.- System char- Cause Measures fault comp. acteristics code Burner in a Flue gas Check the heating fault state temperature system filling limiter has level. Vent the responded. system. Press reset but- ton "E" after the flue gas system has cooled down.
  • Page 76 Troubleshooting Fault codes (cont.) Display Const. Weath.- System char- Cause Measures fault comp. acteristics code Burner in a Air pressure Check the air fault state switch is not pressure switch open at and the intercon- burner start. necting cable. Check the fan. Check the fan connecting cables.
  • Page 77 Troubleshooting Fault codes (cont.) Display Const. Weath.- System char- Cause Measures fault comp. acteristics code Burner Fault at the Check the ignition blocked burner con- electrodes and trol unit connecting cables/leads; check whether there are strong interference (EMC) fields near the equipment;...

  • Page 78: 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 dis- connected plug and compare it with the curve.
  • Page 79 Troubleshooting Repairs (cont.) Checking the boiler water temperature sensor, cylinder tem- perature sensor or the flow temperature sensor for a low loss header Boiler water temperature sensor: Pull the leads from boiler water temperature sensor A and check the resistance. Cylinder temperature sensor: Pull plug % from the cable harness at the control unit and check the...
  • Page 80 Troubleshooting Repairs (cont.) 2. Check the sensor resistance and compare the actual values with the curve. 3. Replace the sensor in case of severe deviation. Danger The boiler water tempera- ture sensor is immersed in the heating water (risk of scalding).
  • Page 81 Troubleshooting Repairs (cont.) 3. Replace the sensor in case of severe deviation.
  • Page 82 Troubleshooting Repairs (cont.) Checking the temperature limiter If the burner control unit cannot be 2. Check the continuity of the thermo- reset after a fault shutdown, although couple with a multimeter. the boiler water temperature is below approx. 75 °C, check the following: 3.
  • Page 83 Troubleshooting Repairs (cont.) Checking the fuse 1. Switch OFF the power. 3. Remove cover A. 2. Release the side closures and 4. Check fuse F1 (see connection and pivot the control unit down. wiring diagram). Extension kit for heating circuit with mixer Checking the rotational direction of the mixer motor 1.
  • Page 84 Troubleshooting Repairs (cont.) Then standard control mode 2. Note the rotational direction of the resumes. mixer motor during its self-test. Then set the mixer manually to "Open" again. Note The flow temperature sensor must now capture a higher temperature. If the temperature drops, either the motor is turning in the wrong direc- tion or the mixer set is incorrectly fitted.
  • Page 85 Troubleshooting Repairs (cont.) 2. Change over the rotational direc- tion switch: Switch position I for central heating return from the left (delivered con- dition). Switch position II for central heat- ing return from the right. Checking the Vitotronic 050 (accessories) The Vitotronic 050 is connected to the control unit via the LON cable.

  • Page 86: Function Description Constant Temperature Control Unit

    Function description Constant temperature control unit Controls and display elements A Pressure gauge D Reset button B Fault display (red) E User interface C ON indicator (green) F ON/OFF switch Keys at the user interface: Set boiler water tempera- Heating and DHW ture No function Set DHW temperature...

  • Page 87: Weather-Compensated Control Unit

    Function description Constant temperature control unit (cont.) DHW heating The burner, the circulation pump and The set boiler water temperature is the three-way valve are started or adjusted 20 K higher than the set changed over, if the cylinder tempera- DHW temperature (adjustable via ture lies 2.5 K below the set cylinder coding address "60").
  • Page 88 Function description Weather-compensated control unit (cont.) Setting values Information Confirmation Standard settings (Reset) Heating mode The control unit determines a set boil- The boiler water temperature will be er water temperature subject to out- limited: side temperature or room temperature To 74 °C by the control thermostat (if a room temperature-dependent inside the burner control unit.

  • Page 89: Extensions For External Connections (Accessories)

    Function description Extensions for external connections (accessories) Internal extension H1 The internal extension is integrated Heating circuit pump for a heating into the control unit housing. The fol- circuit without mixer (coding lowing alternative functions can be address "53:2") connected to relay output sK. The Cylinder primary pump (coding function is allocated via coding address "53:3")
  • Page 90 Function description Extensions for external connections . . . (cont.) Internal extension H2 The internal extension is integrated Heating circuit pump for heating cir- into the control unit housing. The fol- cuit without mixer (coding address lowing alternative functions can be "53:2") connected to relay output sK.
  • Page 91 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) neously via the extension:...
  • Page 92 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) neously via the extension:...

  • Page 93: Control Functions

    Function description Control functions External heating program changeover The "External heating program chan- geover" function is connected via external extension input "aVD". You can select which heating circuits the heating program changeover affects in coding address "91": Heating program changeover Coding No changeover 91:0...
  • Page 94 Function description Control functions (cont.) External blocking The "External blocking" function is In coding address "32", you can select connected via the 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 95 Function description Control functions (cont.) Filling with the control unit switched ON If the system is to be filled with the The burner shuts down if this function control unit switched ON, the diverter is enabled via coding address "2F". valve will be moved to its central posi- The program is automatically disabled tion via coding address "2F:2"...
  • Page 96 Function description Control functions (cont.) Temperature profile 2: (ZV parquet and flooring technology) coding address "F1:2" Temperature profile 3: Coding address "F1:3" Temperature profile 4: Coding address "F1:4"...
  • Page 97 Function description Control functions (cont.) Temperature profile 5: Coding address "F1:5" Temperature profile 6 (delivered condition): Coding address "F1:6" Raising the reduced room temperature During operation with reduced room The outside temperature limits for the temperature, the reduced set room start and end of the temperature rais- temperature can be automatically ing can be adjusted via coding...
  • Page 98 Function description Control functions (cont.) Example using the settings in the delivered condition A Heating curve for operation with B Heating curve for operation with standard room temperature reduced room temperature Reducing the heat-up time During the transition from operation The value and duration of the addi- with reduced room temperature to tional increase of the set boiler water...

  • Page 99: Remote Control Dip Switches

    Function description Control functions (cont.) Example using the settings in the delivered condition A Start of operation with standard C Set boiler water or flow tempera- room temperature ture in accordance with coding B Set boiler water or flow tempera- address "FA": ture in accordance with the 50 °C + 20 % = 60 °C...
  • Page 100 Function description Remote control DIP switches (cont.) Remote control DIP switch setting The remote control affects the heating circuit without mixer A1 The remote control affects the heating circuit with mixer M2 When connecting a separate room temperature sensor, set DIP switch "3" to "ON".
  • Page 101 Designs Connection and wiring diagrams internal connections Main PCB dÖ Stepper motor for diverter X... Electrical interface valve § Boiler water temperature sen- Temperature limiter Ignition unit Ionisation electrode a-Ö Fan motor Flue gas temperature sensor a-Ö A Fan motor control Air pressure switch...

  • Page 102: Connection And Wiring Diagrams External Connections

    Designs Connection and wiring diagrams external connections Main PCB Power supply unit...
  • Page 103 Designs Connection and wiring diagrams external . . . (cont.) Optolink Flow temperature sensor, low Burner control unit loss header Programming unit Cylinder temperature sensor Coding card (plug on the cable harness) Connection adaptor sÖ Internal circulation pump LON communication module Gas solenoid valve (Vitotronic 200) fÖ...

  • Page 104: Parts Lists

    Parts lists Parts lists Spare parts information 050 Burner gasket Quote the part and serial no. (see 051 Insulating ring type plate) and the item number of the 052 Burner gauze assembly required part (as per this parts list). 053 Burner gauze gasket Obtain standard parts from your local 056 Air pressure switch supplier.
  • Page 105 Parts lists Parts lists (cont.) Parts not shown 150 Installation instructions 016 Special grease 151 Service instructions 042 Fixing elements 152 Operating instructions for con- 097 Stepper motor connecting cable stant temperature mode 098 Internal ionisation lead 153 Operating instructions for 099 Ionisation cable with strain relief weather-compensated mode 100 Cable harness X8/X9...
  • Page 106 Parts lists Parts lists (cont.)
  • Page 107 Parts lists Parts lists (cont.)
  • Page 108 Parts lists Parts lists (cont.)
  • Page 109 Parts lists Parts lists (cont.)

  • Page 110: Commissioning/Service Reports

    Commissioning/service reports Commissioning/service reports Setting and test va- Set value Initial Service lues start-up Date: Static pressure mbar max. 57.5 mbar Supply pressure (flow pressure) = for natural gas E mbar 17.4-25 mbar = for natural gas LL mbar 17.4-25 mbar = for LPG mbar 42.5-57.5 mbar...

  • Page 111: Specification

    Specification Specification Rated voltage: 230 V~ Rated frequency: 50 Hz Electronic tempera- Rated current: ture limiter setting: 82 °C (fixed) Safety class: Temperature limiter IP X 4 D to setting: 100 °C (fixed) Protection: EN 60529 Line fuse (mains): max. 16 A Permissible ambient temperature Power consumption during operation:...
  • Page 112 Specification Specification (cont.) Product characteristics (to EnEV [Germany]) Rated output range 8.8 to 20 Efficiency 100 % of rated output 95.8 30% of rated output 106.8 Standby loss q (max. limit according to EnEV B,70 [Germany]) Power consumption (max. limit according to EnEV [Germany]) 100 % of rated output 30 % of rated output...
  • Page 113 Condensing boilers. The product characteristics determined as system values for the product Vitodens 200 as part of EC type testing according to the Efficiency Direc- tive (see specification table), can be utilised to assess the energy consumption of heating and ventilation equipment to DIN V 4701 10 which is specified by the EnEV [Germany].

  • Page 114: 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 the 1st BImSchV paragraph 7 (2) [Germany]. Vitodens 200 Allendorf, 3 April 2006 Viessmann Werke GmbH&Co KG...

  • Page 115: Keyword Index

    Keyword index Keyword index Acknowledging a fault display Fault codes ........Fault display layout .
  • Page 116 Keyword index Keyword index (cont.) Language selection Safety chain ............Scanning .
  • Page 120 Applicability Gas fired condensing boiler Type WB2A 8.8 to 20 kW from serial no. 7186 846 4 00001 ... Viessmann Werke GmbH&Co KG Viessmann Limited D-35107 Allendorf Hortonwood 30, Telford Telephone: +49 6452 70-0 Shropshire, TF1 7YP, GB Fax: +49 6452 70-2780 Telephone: +44 1952 675000 www.viessmann.com...

Table of Contents