Viessmann Vitodens 200 Service Manual
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Viessmann Vitodens 200 Service Manual

8.8 to 26.0 kw gas fired wall mounted condensing boiler natural gas and lpg version
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See also: Start-up and Service Instructions , Instruction and Installation Manual
VIESMANN

Service instructions

for heating engineers
Vitodens 200
Type WB2A, 8.8 to 26.0 kW
Gas fired wall mounted condensing boiler
natural gas and LPG version
See applicability on the last page
VITODENS 200
Please keep safe
5692 573 GB
6/2004

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Summary of Contents for Viessmann Vitodens 200

  • Page 1: Service Instructions

    VIESMANN Service instructions for heating engineers Vitodens 200 Type WB2A, 8.8 to 26.0 kW Gas fired wall mounted condensing boiler natural gas and LPG version See applicability on the last page VITODENS 200 Please keep safe 5692 573 GB 6/2004...

  • Page 2: Safety Instructions

    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 the coding to the as delivered condition ........62 Service scans Service level summary ................

  • 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 maintenanc . . . (cont.) Commissioning steps Inspection steps Maintenance steps Page • • 21. Checking the condensate drain and cleaning the siphon ..................•...

  • 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 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) 4. If the control unit had already been 5. Close the boiler fill & drain valve switched ON before filling began: Start the control unit and in code 1, set coding address 2F:2.

  • Page 9: 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 upper valve B with a drain outlet. 3. Open valves A and B, and vent at mains pressure, until no sound of escaping air can be heard.

  • Page 10: Filling The Siphon With Water

    Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) 2. Activate the venting program via 3. Check the system pressure. coding address 2F:1. Note To call up code 1 and for setting the coding address, see page 39. For function and sequence of the venting program, see page 105.

  • Page 11: Setting The Time And Date (If Required) - Only For Weather-Compensated Control Units

    Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Setting the time and date (if required) - only for weather-com- pensated control units Note During commissioning, or after prolonged time out of use, it may be necessary to set the time and date. 1.

  • Page 12: Gas Type Conversion

    Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) 4. Set the gas type via coding 5. Record the gas type in the service address 1E at the control unit. report on page 120. Note To call up code 1 and for setting the coding address, see page 39.
  • Page 13 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Air pressure lim- After approx. Check fan cables iter enables start 51 seconds and fan plug-in (contact closed fault connections, between term- check fan inals X8.10 and X8.11) Ignition Fault Check the ignition module (control...

  • Page 14: Checking Static And Supply Pressure

    Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Operational bur- Stops below set Check flue gas boiler tempera- system for sound- ture and immedi- ness (flue gas ately restarts recirculation), again check gas flow pressure Checking static and supply pressure Danger Higher CO emissions can lead to poisoning.
  • Page 15 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) 5. Start up boiler. Note During commissioning, the boiler can enter a fault state because of airlocks in the gas pipe. After approx. 5 seconds, press E to reset the burner. 6.

  • Page 16: Checking The Co 2 Settings

    A. Checking the CO settings Vitodens 200 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 17 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) 1. Connect a flue gas analyser at flue gas connector A on the flue outlet. 2. Open the gas shut-off valve, com- mission the boiler and create a heat demand.

  • Page 18: Setting The Max. Output

    Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) 7. Check the CO content. Should the actual value deviate by more than 1 % from the above range, imple- ment steps from page 16 (possibly replace the burner). 8.

  • Page 19: 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 gas fired wall mounted boilers, 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 20: 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) 4. Release gas connection pipe F. 1. Switch OFF the control unit ON/ OFF switch and the mains electri- 5.

  • Page 21: Checking The Burner Gauze Assembly

    Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) 6. Check the burner gasket for damage. Generally, replace the burner gas- ket every two years. Checking the burner gauze assembly Replace the burner gauze assembly if it is damaged. 1.

  • Page 22: Checking And Adjusting The Ignition And Ionisation Electrodes

    Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) 6. Refit the electrodes A. Torque: 2.5 Nm. Checking and adjusting the ignition and ionisation electro- A Ignition electrodes B Ionisation electrode 1. Check the electrodes for wear and 3.

  • Page 23: Cleaning The Combustion Chamber/Cleaning The Heating Surfaces And Installing The Burner

    Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Cleaning the combustion chamber/cleaning the heating sur- faces and installing the burner 1. If required, clean combustion chamber A and heating surfaces B with a brush, or flush with water. Important information Scratches on parts which are in contact with flue...
  • Page 24 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) 3. Secure the gas supply pipe with a new gasket. 4. Check the gas connections for soundness. Danger Escaping gas leads to a risk of explosion. Check all fittings for sound- ness.
  • Page 25 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Flow limiter (only for gas combination boilers) 1. Switch OFF the control unit, shut off the cold water supply line and drain the secondary (DHW) side of the boiler. 2.
  • Page 26 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Checking the ionisation current 1. Pull the line off and connect test equipment (adaptor line available as accessory). 2. Set the upper rated output. Constant temperature control unit: Press K and d simultaneously &...
  • Page 27 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) 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 LPG 1E:1 System design 2 With/without DHW heating 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 29 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) System design 3 With/without DHW heating with one heating circuit without mixer A1 and one heating circuit with mixer M2 and system separation Outside temperature sensor Maximum temperature controller Flow temperature sensor (underfloor heating) Cylinder temperature sensor...
  • Page 30 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Outside temperature sensor Extension kit for one heating cir- Flow temperature sensor cuit with mixer Cylinder temperature sensor Vitotronic 050 sÖ Heating circuit pump Maximum temperature controller Mains supply (extension kit) (underfloor heating) aVG KM BUS Required coding...
  • Page 31 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Outside temperature sensor Cylinder temperature sensor for aVG KM BUS solar operation Solar-Divicon Cylinder temperature sensor Collector temperature sensor (accessory) Vitosolic 100 or 200 High limit safety cut-out Connection extension (only for Vitosolic 100, accessory) Required coding Address...
  • 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 (accessory) must be plugged in. Installation instructions for LON communication module Note Data transfer via the LON system can take 2 to 3 minutes.
  • 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 Set code 81:3 Set code 81:3 —...
  • Page 34 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) 5. Press L and d simultaneously for approx. 1 second. User check completed. Adjusting heating curves (only for weather-compensated control units) The heating curves illustrate the rela- Settings in the delivered condition: &...
  • 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.) 2. Adjust the set day temperature with rotary selector ts. The value will be automatically adopted after approx. 2 seconds. Accordingly, the heating curve is adjusted along set room tempera- ture axis C, which results in modi- fied start/shutdown characteristics of the heating circuit pumps, if the...
  • Page 37 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) 2. Call up the set night temperature with E. 3. Change this value with a and b. 4. Confirm the set value with d. Example 2: Modifying the reduced room temperature from 5 °C to 14 °C A Boiler water or flow temperature in °C...
  • Page 38 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) 1. Press c. After maintenance has been carried Maintenance scan is activated. 2. Scan maintenance messages 1. Reset code 24:1 to 24:0 with a or b. The red fault indicator is extin- guished.

  • 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 seconds. shows "adopted", then the address 2. Select the required coding address flashes again.

  • Page 40: Coding Code 1

    Coding Code 1 (cont.) Summary Codes Coding in Function mode Coding Possible change the as change delivered Address: condition value Address: value System design 00:1 System design 1: 00:2 System design 1, 5: 1 heating circuit without 1 heating circuit without mixer A1, without DHW mixer A1, with DHW heat- heating...
  • Page 41 Coding Code 1 (cont.) Coding in Function mode Coding Possible change the as change delivered Address: condition value Address: value 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 - ...

  • Page 42: Code 2

    Coding Code 1 (cont.) Coding in Function mode Coding Possible change the as change delivered Address: condition value Address: value Slope A1 d3:14 Heating curve slope = d3:2 Heating curve slope adjustable from 0.2 to 3.3 d3:35 (see page 34) Slope M2 d3:14 Heating curve slope =...

  • Page 43: Overall Summary

    Coding Code 2 (cont.) Overall summary The coding addresses are grouped in accordance with the following function ranges. The respective function range is displayed. Scroll through the ranges in the following sequence with a or b. Function range Coding addresses System design Boiler/burner 06 to 54...
  • Page 44 Coding Code 2 (cont.) Codes Coding in Function mode Coding Possible change the as change delivered Address: condition value Address: value System design 00:1 System design 1: 00:2 System design 1, 5: 1 heating circuit without 1 heating circuit without mixer A1, without DHW mixer A1, with DHW heat- heating...
  • Page 45 Coding Code 2 (cont.) Coding in Function mode Coding Possible change the as change delivered Address: condition value Address: value 23:0 No time interval for bur- 23:1 Time interval adjustable ner maintenance from 1 to 24 months 23:24 24:0 No "Maintenance" dis- 24:1 "Maintenance"...
  • Page 46 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. Control funct. funct. Control Control funct. OFF Control funct. 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 Control Control funct. Control funct. funct. funct. Control Control Control funct. OFF funct.
  • Page 48 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 change delivered...
  • Page 49 Coding Code 2 (cont.) Coding in Function mode Coding Possible change the as change delivered Address: condition value Address: value Domestic hot water 56:0 DHW temperature 56:1 DHW temperature adjus- adjustable from 10 to table from 10 to above 60 °C 60 °C (subject to boiler coding card;...
  • Page 50 Coding Code 2 (cont.) Coding in Function mode Coding Possible change the as change delivered Address: condition value Address: value 65:... Information regarding 65:0 Without diverter valve the type of diverter 65:1 Diverter valve by Viess- valve (not adjustable) mann 65:2 Diverter valve by Wilo 65:3...
  • Page 51 Coding Code 2 (cont.) Coding in Function mode Coding Possible change the as change delivered 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 52 LON BUS to any connected Vitotro- nic 050. 98:1 Viessmann system 98:1 System number adjusta- numbers (in conjunction ble from 1 to 5 with monitoring of sev- 98:5 eral systems via Vito- com 300).
  • Page 53 Coding Code 2 (cont.) Coding in Function mode Coding Possible change the as change delivered 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 9b:127 demand 9C:20...
  • Page 54 Coding Code 2 (cont.) Coding in Function mode Coding Possible change the as change delivered Address: condition value Address: value A3:5 Outside temperature A3:-9 Heating circuit pump ON/ below 4 °C: Heating cir- OFF (see the following cuit pump ON A3:15 table).
  • Page 55 Coding Code 2 (cont.) Coding in Function mode Coding Possible change the as change delivered Address: condition value Address: value Boiler circuit, mixer circuit A4:0 With frost protection A4:1 No frost protection, adjustment only possible if code "A3:-9" is selected. Note With settings below 1 °C there is a risk of pipes...
  • Page 56 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 change delivered Address: condition...
  • Page 57 Coding Code 2 (cont.) Coding in Function mode Coding Possible change the as change delivered Address: condition value Address: value A7:0 Without mixer econ- A7:1 With mixer economy omy function function (extended heat- ing circuit pump logic): Heating circuit pump also OFF, if the mixer was closed for longer than 20 minutes.
  • Page 58 Coding Code 2 (cont.) Coding in Function mode Coding Possible change the as change delivered 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 temperature hook-up...
  • Page 59 Coding Code 2 (cont.) Parameter With heating circuit pump logic function: Heating cir- address b5:... cuit pump OFF, if active RT > RT - 1 K; passive RT < RT - 2 K Actual Actual active RT > RT - 2 K; passive RT <...
  • Page 60 Coding Code 2 (cont.) Coding in Function mode Coding Possible change the as change delivered Address: condition value Address: value No display correction of E2:99 display correction +4.9 K the actual room tem- perature. Mixer circuit F1:0 Screed function inactive F1:1 Screed drying function (only for weather-com-...
  • Page 61 Coding Code 2 (cont.) Coding in Function mode Coding Possible change the as change delivered Address: condition value Address: value the address is manually set to 0. F1:6 Constant flow tempera- ture 20 °C F1:15 F2:8 Time limit for party F2:0 No time limit for party operation 8 hours or...

  • Page 62: Resetting The Coding To The As Delivered Condition

    Coding Code 2 (cont.) Coding in Function mode Coding Possible change the as change delivered Address: condition value Address: value 10 minutes respectively. F7:25 Internal circulation pump is permanently ON in "Standby mode" Resetting the coding to the as delivered condition 1.

  • Page 63: 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 seconds Press K and d simulta- Press d Relay test neously for approx. 2 seconds Press K and F simulta- Press d...

  • Page 64: 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 seconds. 3. Press d. The following values can be scanned, subject to the actual equipment level: Slope A1 –...
  • Page 65 Service scans Temperatures, boiler coding card and brief scans (cont.) Display screen Brief scan Flow Software Software Software Software Software switch version version version version version position Pro- Mixer Solar Ext. exten- gram- exten- control system sion ming unit sion kit unit Software version Type...
  • Page 66 Service scans Temperatures, boiler coding card and brief scans (cont.) Display screen Brief scan Internal circulation Heating circuit pump Heating circuit pump pump boiler circuit A1 mixer circuit M2 Variable Software Variable Software Variable Software speed version speed version speed version pump Variable...
  • Page 67 Service scans Temperatures, boiler coding card and brief scans (cont.) Display screen Brief scan 0: No ext. 0: No ext. External hook-up 0 to 10 V demand or blocking Display in % operating 1: Ext. mode blocking change- present over 1: Ext.

  • Page 68: Checking Outputs (Relay Test)

    Service scans Checking outputs (relay test) Weather-compensated control unit 1. Press K and d simultaneously 2. Select the relay outputs with a and b. for approx. 2 seconds. Relay test is activated. 3. Press d. Relay test is completed. Subject to the actual equipment level, the following relay outputs can be con- trolled: Display Description...

  • Page 69: Scanning Operating Conditions And Sensors

    Service scans Checking outputs (relay test) (cont.) Display Description Burner modulation - lower output Burner modulation - upper output Diverter valve set to heating mode Valve in central position Valve set to DHW mode Internal pump / output 20 ON Output sK - internal extension Heating circuit pump A1 - external extension Cylinder loading pump - external extension...

  • Page 70: Scanning Operating Conditions And Sensors

    Service scans Scanning operating conditions and sensors (cont.) Operating condition display Description (subject to system equip- ment level) Boiler temperature, ... °C Actual value Flow temperature, ... °C Actual value (only for heating circuit M2) Standard Set value room temperature, ... °C Room temperature, ...
  • Page 71 Service scans Scanning operating conditions and sensors (cont.) Constant temperature control unit 1. Press c. 3. Press c. 2. Select the required operating con- dition scan with a or b. Operating condition display (sub- Description ject to system equipment level) Outside temperature sensor - actual 15 °C/°F value (i: only if an outside tempera-...

  • Page 72: Troubleshooting

    Troubleshooting Downloading fault codes history The latest 10 faults are saved and may be called-up. 1. Press G and d simultaneously for approx. 2 seconds. 2. Call up the individual fault codes with a or b. Fault code order Fault code most recent 10.
  • Page 73 Troubleshooting Call 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 A continues to flash.

  • Page 74: Checking And Acknowledging Faults

    Troubleshooting Call 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 the red fault indicator U continues to flash. A new fault message will be displayed if an Constant temperature control units acknowledged fault is not removed by the following morning.
  • Page 76 Troubleshooting Checking and acknowledging faults (cont.) Fault code Const. Weat- System Cause Remedy in the dis- character- play comp. istics Burner Boiler temperature Check the blocked sensor shorted out boiler tem- perature sen- sor (see page 86) Boiler temperature sensor lead break Mixer Heating circuit M2 Check the...
  • Page 77 Troubleshooting Checking and acknowledging faults (cont.) Fault code Const. Weat- System Cause Remedy in the dis- character- play comp. istics Cylinder tempera- ture sensor lead break Control Solar control unit See solar mode fault message control unit service instructions Control Faulty operating Replace mode...
  • Page 78 Troubleshooting Checking and acknowledging faults (cont.) Fault code Const. Weat- System Cause Remedy in the dis- character- play comp. istics Control Communication Check con- mode with- fault - Vitotrol nections, out remote remote control cable, coding control heating circuit A1 address A0 and the remote con-...
  • Page 79 Troubleshooting Checking and acknowledging faults (cont.) Fault code Const. Weat- System Cause Remedy in the dis- character- play comp. istics Control Communication Check set- mode, fault - variable tings of cod- max. pump speed heating cir- ing address speed cuit pump, heating E5;...
  • Page 80 Troubleshooting Checking and acknowledging faults (cont.) Fault code Const. Weat- System Cause Remedy in the dis- character- play comp. istics Room temperature Check the sensor heating cir- room tem- cuit A1 lead break perature sen- sor for heating cir- cuit A1 Heating circuit M2 Check the room temperature...
  • Page 81 Troubleshooting Checking and acknowledging faults (cont.) Fault code Const. Weat- System Cause Remedy in the dis- character- play comp. istics Burner in Flue gas tempera- Check the fault state ture limiter has heating sys- responded tem water level. Vent the heating system.
  • Page 82 Troubleshooting Checking and acknowledging faults (cont.) Fault code Const. Weat- System Cause Remedy in the dis- character- play comp. istics Burner in No flame signal is Check the fault state present ionisation electrode and leads, mea- sure the ioni- sation cur- rent, check the gas pres- sure, check...
  • Page 83 Troubleshooting Checking and acknowledging faults (cont.) Fault code Const. Weat- System Cause Remedy in the dis- character- play comp. istics Burner in Fan stop not Check the fault state achieved fan, check the fan cables, check the fan control Press E Burner Burner control unit Check the...

  • Page 84: Repairs

    Troubleshooting Checking and acknowledging faults (cont.) Fault code Const. Weat- System Cause Remedy in the dis- character- play comp. istics Burner Internal fault Remove EMC blocked interference. If the equip- ment will not restart, check the boiler coding card and replace, or replace the control unit.
  • Page 85 Troubleshooting Repairs (cont.) 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. 3. Where actual values strongly devi- ate from the curve values, discon- nect the wires at the sensor, and repeat test directly at the sensor.
  • Page 86 Troubleshooting Repairs (cont.) Checking the boiler temperature sensor, cylinder tempera- ture sensor or the flow temperature sensor for the low loss header 1. Boiler temperature sensor: Pull the leads from boiler temperature sensor A and measure the resis- tance. Cylinder temperature sensor: Pull the plug % from the cable harness on the control unit and measure the resistance.
  • Page 87 Troubleshooting Repairs (cont.) 2. Check the sensor resistance and compare actual values with the curve. 3. Replace the sensor in case of severe deviation. Danger The boiler temperature sen- sor is immersed in the heat- ing water (risk of scalding). Drain the boiler before repla- cing the sensor.
  • Page 88 Troubleshooting Repairs (cont.) 3. Replace the sensor in case of severe deviation. Note Water can leak out when replacing the outlet sensor. Close the cold water shut-off valve. Drain DHW pipe and plate heat exchanger (secondary side). Checking the flue gas temperature sensor The flue gas temperature sensor locks out the boiler when the permissible flue gas temperature is exceeded.
  • Page 89 Troubleshooting Repairs (cont.) 1. Pull the leads from the flue gas temperature sensor A. 2. Check the sensor resistance and compare actual values with the curve. 3. Replace the sensor in case of severe deviation.
  • Page 90 Troubleshooting Repairs (cont.) Checking plate heat exchanger K Heating return M Heating flow L Cold water N DHW 1. Shut off and drain the boiler on 4. Remove the retaining clip and siphon C. the primary and the secondary side. 5.
  • Page 91 Troubleshooting Repairs (cont.) 8. Release screws G and pull plate 11. Install in reverse order using new heat exchanger H forward. gaskets. Lubricate the new gas- kets/seals. Note During removal, small amounts of Danger water may trickle out and escape Escaping gas leads to a from the removed plate heat risk of explosion.
  • Page 92 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 thermocouple & Check the continuity of the thermo- couple with a multimeter.
  • Page 93 Troubleshooting Repairs (cont.) Checking the 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 94 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 seconds) &...
  • Page 95 Troubleshooting Repairs (cont.) Checking Vitotronic 050 (accessory) Vitotronic 050 is connected to the control unit via the LON system. To test the connection, implement a user check on the boiler control unit (see page 33).

  • Page 96: Function Description

    Function description Constant temperature control unit Heating mode DHW loading with gas fired combi- The set boiler water temperature will nation boilers be maintained in the heating and If the flow switch recognises that DHW operating program G, when a DHW is drawn off (>...
  • Page 97 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 98: Weather-Compensated Control Unit

    Function description Weather-compensated control unit Heating mode The control unit determines a set boi- DHW loading with a gas fired boiler ler water temperature subject to out- The DHW heating will be activated if side temperature or room temperature the cylinder temperature falls 2.5 K (if a room temperature dependent below the set cylinder temperature.
  • Page 99 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 100: Extensions For External Connections (Accessory)

    Function description Extensions for external connections (accessory) Internal extension H1 & The internal extension is integrated Central fault message (code 53:0) & into the control unit housing. As alter- Cylinder loading pump (code 53:3) & native, the following functions can be DHW circulation pump (code 53:1) connected to relay output sK.
  • Page 101 Function description Extensions for external connections (accessory) (cont.) Internal extension H2 & The internal extension is integrated Central fault message (code 53:0) & into the control unit housing. As alter- Cylinder loading pump (code 53:3) & native, the following functions can be DHW circulation pump (code 53:1) connected to relay output sK.

  • Page 102: External Extension H

    Function description Extensions for external connections (accessory) (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 103 Function description Extensions for external connections (accessory) (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 104: Control Functions

    Function description Control functions External changeover of operating mode The "Ext. changeover of operating mode" function is connected via exter- nal extension input aVD. With coding address 91 you can select the heating circuit to which the changeover of operating mode should apply: Coding Changeover of operating mode affects: 91:0...
  • Page 105 Function description Control functions (cont.) External blocking The "External blocking" function is In coding address 32 you can select connected via input aVD of the exter- the influence the "Ext. blocking" sig- nal extension. nal should have on the connected cir- culation pumps.
  • Page 106 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 107 Function description Control functions (cont.) Temperature profile: Diagram 2 code F1:2 Temperature profile: Diagram 3 code F1:3 Temperature profile: Diagram 4 code F1:4...
  • Page 108 Function description Control functions (cont.) Temperature profile: Diagram 5 code F1:5 Temperature profile: Factory-set code F1:6 to F1:15...

  • Page 109: Designs

    Designs Connection and wiring diagrams – internal connections Main PCB DHW outlet sensor § Boiler temperature sensor...
  • Page 110 Designs Connection and wiring diagrams – internal connectio . . . (cont.) dÖ Cylinder temperature sensor Step motor for diverter valve (gas fired boiler) Temperature limiter Comfort sensor (gas combina- Ignition unit a-Ö Fan motor tion boiler) aCA Air pressure switch (Plug on the cable harness) aVL Flow switch Ionisation electrode...

  • Page 111: Connection And Wiring Diagrams - External Connections

    Designs Connection and wiring diagrams – external connections Main PCB Mains supply unit...
  • Page 112 Designs Connection and wiring diagrams – external connectio . . . (cont.) Optolink Cylinder temperature sensor sÖ Burner control unit Internal circulation pump Operating interface Gas solenoid valve fÖ Coding card Power supply Connection adaptor Mains power supply - acces- LON communication module sories and Vitotrol 100 a-Ö...

  • Page 113: 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 Quick-acting air vent valve 034 Return pipe with gasket (item 002 Connection pipe with gasket 041)

  • Page 114: Type Plate

    Parts lists Parts lists (cont.) 089 Connection adaptor 042 Fastenings 090 Coding card 097 Step motor connecting cable 091 Fuses (10 pieces) 098 Internal ionisation lead 092 Operating interface for constant 099 Ionisation lead with strain relief temperature operation 100 Cable harness X8/X9 093 Operating interface for weather- 101 Cable harness 100/35/34 (aux- compensated operation...
  • Page 115 Parts lists Parts lists (cont.)
  • Page 116 Parts lists Parts lists (cont.)
  • Page 117 Parts lists Parts lists (cont.)
  • Page 118 Parts lists Parts lists (cont.)
  • Page 119 Parts lists Parts lists (cont.)

  • Page 120: 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 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 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 125 Commissioning/service reports Commissioning/service reports (cont.) Maintenance/ser- Maintenance/ Maintenance/ Maintenance/ser- vice service service vice...

  • Page 126: Specification

    Specification Specification Rated voltage: 230 V~ Rated frequency: 50 Hz Electronic tempera- Rated current: 6 A~ ture limiter setting: 82 °C (fixed) Safety class: Temperature limiter IP X 4 D to setting: 100 °C (fixed) Protection level: EN 60 529 Mains fuse: Max.

  • Page 127: Certificates

    Certificates Declaration of conformity Declaration of Conformity for Vitodens 200 We, Viessmann Werke GmbH & Co KG, D-35107 Allendorf, declare as sole responsible body, that the product Vitodens 200 conforms to the following stan- This product is designated in accor-...

  • Page 128: 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 200 Allendorf, 02.06.04 Viessmann Werk GmbH&Co KG...

  • Page 129: Keyword Index

    Keyword index Keyword index Adjusting the room temperature Fault history ........Fault message .
  • Page 130 Keyword index Keyword index (cont.) Parts list Temperature limiter ........
  • Page 132 8.8 to 26 kW 8.8 to 26/28 kW from serial no. from serial no. 7176 543 3 00001 ... 7176 541 3 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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Vitodens 200 wb2a

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