Viessmann Vitoplus 300 Service Instructions Manual
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Viessmann Vitoplus 300 Service Instructions Manual

Wall mounted oil fired condensing boiler for the combustion of low sulphur fuel oil din 51603-el-1 with integral boiler control unit
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VIESMANN
Service instructions
for heating engineers
Vitoplus 300
Type VP3A, 12.9/19.3 kW, 16.1/23.5 kW
Wall mounted oil fired condensing boiler
for the combustion of low sulphur fuel oil DIN 51603-EL-1
with integral boiler control unit
For applicability, see the last page
VITOPLUS 300
Please keep safe
5692 536 GB
7/2005

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Summary of Contents for Viessmann Vitoplus 300

  • Page 1 VIESMANN Service instructions for heating engineers Vitoplus 300 Type VP3A, 12.9/19.3 kW, 16.1/23.5 kW Wall mounted oil fired condensing boiler for the combustion of low sulphur fuel oil DIN 51603-EL-1 with integral boiler control unit For applicability, see the last page...
  • 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 Index Index Initial start-up, inspection, maintenance Steps initial start-up, inspection and maintenance ........Further details regarding the individual steps ..........Coding Code 1......................38 Code 2......................41 Resetting codes to the delivered condition ..........60 Service scans Service level overview ................61 Temperatures, boiler coding card and brief scans ........

  • Page 5: Table Of Contents

    Initial start-up, inspection, maintenance Steps initial start-up, inspection and maintenance For further information regarding individual steps, see the pages indicated. Commissioning steps Inspection steps Maintenance steps Page 1. Filling the heating system ..........2.
  • Page 6 Initial start-up, inspection, maintenance Steps initial start-up, inspection and . . . (cont.) Commissioning steps Inspection steps Maintenance steps Page 22. Checking all connections on the primary side for leaks 23. Checking the burner (recording values on page 108 of the commissioning report) 24.

  • Page 7: Filling The Heating System

    Initial start-up, inspection, maintenance Further details regarding the individual steps Filling the heating system 1. Check the inlet pressure of the dia- phragm expansion vessel. Please note Unsuitable fill water increases the level of depos- its and corrosion and may lead to boiler damage.

  • Page 8: Venting The Boiler

    Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) 4. Continue to fill the system. 5. Close boiler fill & drain valve A. 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.

  • Page 9: Venting The Heating System

    Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Venting the heating system 1. Start the control unit. 3. Check the system pressure. 2. Activate the venting program via coding address "2F:1". Note To call up code 1 and for setting the coding address, see page 38.

  • Page 10: Changing The Language At The Control Unit

    Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) 3. Set the current date with a/b. 4. Confirm with d. Changing the language at the control unit 1. Press c. 4. Select the required language with The display shows "Select heating circuit".

  • Page 11: Adjusting The Standard Burner Settings

    Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) The air pressure After approx. 51 s Check the air switch responds Fault pressure switch, cables and plug- in connections Ignition and oil Check the ignition pump motor start module and oil pump motor, cables and plug-...
  • Page 12 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) A Flue gas test port Rated output 12.9/19.3 16.1/23.5 Burner stage Stage 1 Stage 2 Stage 1 Stage 2 Rated output 12.9 19.3 16.1 23.5 at burner stage Oil burner nozzle Type 80°H LE V 80°H LE V...

  • Page 13: Adjusting The Oil Pressure And Checking The Vacuum

    Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Rated output 12.9/19.3 16.1/23.5 (see page 18) Please note An incorrectly adjusted nozzle gap "a" can result in irregular operation of the burner and even a fault shutdown. Always maintain the stated dimension and check in accordance with the details on page 18.

  • Page 14: Adjusting The Air Volume (Static Burner Pressure)

    Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) 6. If required, adjust the oil pressure for stage 1 at pressure adjusting screw C of the oil pump (for stan- dard values, see page 12). 7. Check the actual emission values after adjusting the oil pressure.
  • Page 15 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) 6. Confirm the set value with d. Note The control unit changes automati- cally to burner stage 2. The display shows "Speed stage 1 + 2 " and a value between 1 and 255.

  • Page 16: Cleaning And Testing The Flame Monitor

    Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Cleaning and testing the flame monitor 1. Pull flame monitor A from the retainer for inspection and clean- ing. 2. Test the function: Tests to be Required re- carried out sponse 1.

  • Page 17: Cleaning The Burner

    Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Cleaning the burner 1. Undo nuts, remove the lid with 3. Undo Allen screw C and remove mixer equipment A and secure in rifling facility D. the maintenance position. 4.

  • Page 18: Adjusting Or Replacing The Nozzle And Checking The Ignition Electrodes

    Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Adjusting or replacing the nozzle and checking the ignition electrodes 1. Undo nozzle E (whilst holding the oil preheater). Prevent the forma- tion of bubbles.
  • Page 19 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) 2. Insert a new LE nozzle E (whilst holding the oil preheater). Select the nozzle in accordance with the details on page 13. Please note Only use nozzles marked "V"...

  • Page 20: Cleaning And Replacing The Oil Pump Filter, If Required

    Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Cleaning and replacing the oil pump filter, if required Oil pump; make: Danfoss, type BFP 52 A Filter plug B O-ring (replace) C Filter (replace)

  • Page 21: Checking The Heating Surfaces For Contamination

    Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Checking the heating surfaces for contamination 1. Pull plug aCA and a-Ö from the 3. Insert burner retainer A (part of fan. Remove the cables from the the cleaning set) into the l.h. side of cable clip on the l.h.

  • Page 22: Cleaning The Heating Surfaces

    Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) 5. Hook burner B into burner retai- 6. Check for heat exchanger contami- ner A or position on a suitable nation. (If contaminated, continue surface. with the following chapter). Cleaning the heating surfaces Please note 1.

  • Page 23: Checking The Condensate Drain And Cleaning The Siphon

    Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) 2. Fit rotary brush D (accessories) to 3. Remove dirt from the heat exchan- a rechargeable power screwdriver ger gaps with a vacuum cleaner or drill and clean the heat exchan- with angled nozzle E (acces- ger with the rotary brush (at low sories).

  • Page 24: Checking The Active Charcoal Filter (Accessories)

    Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Note Part no. for pH test strips: 9517 678. Observe the manufacturer's instructions regarding the neutralising system. Checking the active charcoal filter (accessories) Note Observe the manufacturer's instructions regarding the active charcoal filter. Matching the control unit to the heating system Note Subject to the equipment level, the control unit must be matched to the system.
  • Page 25 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) 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 26 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 thermostat (underfloor Flow temperature sensor heating) Cylinder temperature sensor...
  • Page 27 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) System design 4 With/without DHW heating with one heating circuit without mixer A1 with separate heating circuit pump and one heating circuit with mixer M2 Outside temperature sensor External extension H1 Flow temperature sensor Maximum thermostat (underfloor Cylinder temperature sensor...
  • Page 28 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) System design 5 With/without DHW heating with one heating circuit with mixer M2 (with extension kit), one heating circuit with mixer (with Vitotronic 050) and low loss header Outside temperature sensor Extension kit for a heating circuit Flow temperature sensor with mixer...
  • Page 29 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) System design 6 With one heating circuit without mixer A1, solar collectors and Vitocell-W 100 DHW cylinder (type CVB) installed adjacent to the boiler Outside temperature sensor Cylinder temperature sensor for aVG KM BUS solar operation Solar-Divicon...

  • Page 30: Integrating The Control Unit Into The Lon System

    Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Required coding Address Set DHW temperature 3 at 40 °C (check delivered condition) 67:40 Integrating the control unit into the LON system The LON communication module (accessories) must be plugged in. Installation instructions LON communication module Note...

  • Page 31: Implementing A User Check (In Conjunction With The Lon System)

    Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Boiler control Vitotronic 050 Vitotronic 050 Vitocom unit Control unit is fault Control unit is not Control unit is not Control unit is fault manager manager fault manager fault manager Code "79: 1"...

  • Page 32: Adjusting Heating Curves

    Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) 1. Press L and d simultaneously for approx. 2 s. The user check has been initiated. 2. Select the required user with a and b. 3. Activate a check with d. A Consecutive list number "Check"...
  • Page 33 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Settings in the delivered condition: Generally, the slope of the heating Slope = 1.4 curve lies Level = 0 in the range of A for underfloor heating systems, in the range of B for low tempera- ture heating systems (according to the Energy Savings Order [Ger- many]).
  • Page 34 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Changing slope and level 1. Change the slope with coding address "d3" in code 1 (see page 38). Adjustable value 2 to 35 (equals slope 0.2 to 3.5). 2. Change the level with coding address "d4"...
  • Page 35 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 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 heating circuit pumps if the heating...

  • Page 36: Instructing The System User

    Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) 2. Calling up the set night temperature with E. 3. Change the value with a and b. 4. Confirm the set value with d. Example 2: Adjustment of the reduced room temperature from 5 °C to 14 °C.
  • Page 37 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) 3. Press d, for weather-compen- sated control units also confirm the display "Acknowledge: Yes" with The "Maintenance" display extin- guishes and the red fault indicator continues to flash. Note An acknowledged maintenance message can be redisplayed by pressing d (approx.
  • Page 38 Coding Code 1 Calling up code 1 1. Press K and L simultaneously 3. Change the value with a or b; for approx. 2 s. confirm with d. The display briefly shows "Accepted", then the 2. Select the required coding address address flashes again.
  • Page 39 Coding Code 1 (cont.) Overview Coding Coding in the delivered condition Possible change System designs 00 :1 System design 1: 00 :2 System design 1.6: 1 heating circuit without 1 heating circuit without mixer A1, without DHW mixer A1, with DHW heat- heating 00 :3 System design 5:...
  • Page 40 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 41 Coding Code 1 (cont.) Coding in the delivered condition Possible change Slope M2 d3:14 Heating curve slope = d3:02 Heating curve slope ad- justable from 0.2 to 3.5 d3:35 (see page 32) Level A1 d4:0 Heating curve level = 0 d4: 13 Heating curve level ad- justable from 13 to 40...
  • Page 42 Coding Code 2 (cont.) Function area Coding addresses System design Boiler/burner 06 to 54 56 to 73 General 76 to 9F Boiler circuit (heating circuit A1 without A0 to Fb mixer) Mixer circuit (heating circuit with mixer M2) A0 to Fb Note Codes, which are irrelevant (due to the system equipment level or the setting of other codes) will not be displayed.
  • Page 43 Coding Code 2 (cont.) Coding Coding in the delivered condition Possible change System designs 00 :1 System design 1: 00 :2 System design 1, 6: 1 heating circuit without 1 heating circuit without mixer A1, without DHW mixer A1, with DHW heat- heating 00 :3 System design 5:...
  • Page 44 Coding Code 2 (cont.) Coding in the delivered condition Possible change 24:0 No "Maintenance" dis- 24:1 "Maintenance" display play (the address is automati- cally set and must be manually reset after a service has been carried out) 26:0. Burner fuel consump- 26:1 tion (stage 1);...
  • Page 45 Coding Code 2 (cont.) Coding Internal Heating cir- Heating circuit Cylinder primary circula- cuit pump pump pump tion pump Heating cir- Heating circuit cuit without with mixer mixer Control Control funct. Control funct. Control funct. funct. Control Control funct. Control funct. funct.
  • Page 46 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 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 primary pump circulation cuit pump cuit pump pump Heating cir- Heating cir- cuit without cuit with mixer mixer Control funct. OFF Control funct. Coding in the delivered condition Possible change Boiler/burner 52:0 Without flow tempera-...
  • Page 48 62:15 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 In conjunction with the 67:0 Set DHW value adjusta- Vitosolic solar control ble from 0 to 60 °C...
  • Page 49 Coding Code 2 (cont.) Coding in the delivered condition Possible change 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 50 LON BUS to any connected Vitotronic 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 the delivered condition Possible change 9C:20 Monitoring LON users 9C:0 No monitoring When there is no re- 9C:5 The time is adjustable sponse from a user, va- from 5 to 60 min lues defaulted by the 9C:60 control unit continue to be used for a further...
  • Page 52 Coding Code 2 (cont.) Parameters Heating circuit pump Address A3:... ON at OFF at -8 °C -6 °C -7 °C -5 °C -6 °C -4 °C -5 °C -3 °C -4 °C -2 °C -3 °C -1 °C -2 °C 0 °C -1 °C 1 °C...
  • Page 53 Coding Code 2 (cont.) Coding in the delivered condition Possible change A5:5 With heating circuit A5:0 Without heating circuit pump logic function pump logic function (economy circuit): Heat- A5:1 With heating circuit pump ing circuit pump OFF, if logic function: Heating the outside temperature A5:15 circuit pump OFF, if (see...
  • Page 54 Coding Code 2 (cont.) Coding in the delivered condition Possible change Boiler circuit, mixer circuit A6:36 Extended economy A6:5 Extended economy mode mode disabled is enabled, i.e. the burner A6:35 and heating circuit pump will be switched OFF and the mixer will be closed at a variable value, which is adjustable between 5 and 35 °C plus 1 °C.
  • Page 55 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 in case the set justable from 1 to 15 value is changed (by A9:15 changing the operating...
  • Page 56 Coding Code 2 (cont.) Parameter ad- With heating circuit pump logic function: Heating cir- dress b5:... cuit pump OFF, if enabled RT > RT + 3 K; disabled RT < RT + 2 K actual actual enabled RT > RT + 2 K;...
  • Page 57 Coding Code 2 (cont.) Coding in the delivered condition Possible change E5:0 Without variable speed E5:1 With variable speed cir- circulation pump culation pump; automatic recognition E6:65 Max. speed of the vari- E6:0 Maximum speed adjusta- able speed pump 65% ble from 0 to 100% of of max.
  • Page 58 Coding Code 2 (cont.) Coding in the delivered condition Possible change Mixer circuit F1:0 Screed function inactive F1:1 Screed drying function adjustable in accordance F1:5 with five optional tem- perature/time profiles (see page 93) Note Observe the screed sup- plier's instructions. Observe DIN 4725 2.
  • Page 59 Coding Code 2 (cont.) Coding in the delivered condition Possible change F2:8 Time limit for party F2:0 No time limit for party mode 8 hours or exter- mode nal operating mode F2:1 Time limit adjustable from 1 to 12 h changeover via key F2:12 F5:12...
  • Page 60 Coding Code 2 (cont.) Coding in the delivered condition Possible change FA:20 Raising the set flow FA:0 Raising the set flow tem- temperature for the perature for the transition transition from reduced FA:50 from reduced room tem- temperature to standard perature mode to stan- room temperature mode dard room temperature...
  • Page 61 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. Adjusting the air volume K and F simultaneously K and F...
  • Page 62 Service scans Temperatures, boiler coding card and brief . . . (cont.) Slope A1 level A1 Slope M2 level M2 Adj. outside temperature The adjusted outside temperature can be reset Actual outside temperature to the actual outside temperature with e. Set boiler temp.
  • Page 63 Service scans Temperatures, boiler coding card and brief . . . (cont.) Display screen Brief scan 0: no ex- 0: no ex- External 0 - 10 V hook-up ternal de- ternal Display in % mand blocking 0: no external hook-up 1: exter- 1: exter- nal de-...
  • Page 64 Service scans Checking outputs (relay test) 1. Press K and d simultaneously 2. Control relay outputs with a and for approx. 2 s. 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 Explanation...
  • Page 65 Service scans Scanning operating conditions and sensors (cont.) Heating circuit A1 and heating circuit with mixer M2 Operating condition display Explanation (subject to system equip- ment) User no. Encoded user number in the LON system Holiday program Display only if a holiday program has been set Departure date Date Return date...
  • Page 66 Service scans Scanning operating conditions and sensors (cont.) Operating condition display Explanation (subject to system equip- ment) Central fault OFF or ON Display only, if an external extension is installed Mixer or mixer OPEN or mixer Display only, if an extension kit for one heating CLOSE circuit with mixer is installed Solar circuit pump OFF or ON Display only if a Vitosolic is installed...
  • Page 67 Troubleshooting Fault display Fault display layout A Fault display C Fault number B Fault symbol D Fault code The red fault indicator flashes for every fault. A fault in the burner control unit causes the display to show "E". The display flashes "Fault" if a fault Plain text fault displays: message is issued Burner control unit...
  • Page 68 Troubleshooting Fault display (cont.) 3. d all fault messages are acknowledged simulta- neously, the fault display will be deleted and the red fault indicator continues to flash. Calling up acknowledged fault messages Press the following keys: 2. a/b for the acknowledged fault. 1.
  • Page 69 Troubleshooting Fault codes (cont.) Display fault System char- Cause Measures code acteristics Regulates as if Outside temperature sen- Check the outside the outside sor shorted out temperature sen- temperature sor (see page 75) was 0 °C Outside temperature sen- sor lead broken Regulates System flow temperature Check the low...
  • Page 70 Troubleshooting Fault codes (cont.) Display fault System char- Cause Measures code acteristics Control mode Solar control unit fault See solar control message unit service in- structions Control mode Faulty programming unit Replace program- as per the de- ming unit livered condi- tion Burner Flue gas temperature...
  • Page 71 Troubleshooting Fault codes (cont.) Display fault System char- Cause Measures code acteristics Control mode Communication fault without remote Vitotrol remote control, control heating circuit with mixer Control mode Vitotrol remote control in- Check remote correctly encoded control DIP switch setting (see page 97) Control mode Incorrect LON communi-...
  • Page 72 Troubleshooting Fault codes (cont.) Display fault System char- Cause Measures code acteristics Control mode Communication fault Replace the LON LON communication communication module module Control mode Room temperature sen- Check the room without room sor, heating circuit A1 temperature sen- influence shorted out heating cir-...
  • Page 73 Troubleshooting Fault codes (cont.) Display fault System char- Cause Measures code acteristics Burner control Flue gas temperature lim- Check the heating unit fault iter has responded system fill level. Vent the system. Press reset "E"no sooner than after 20 min- utes.
  • Page 74 Troubleshooting Fault codes (cont.) Display fault System char- Cause Measures code acteristics Burner control No control/feedback of/ Replace fuel unit fault from fuel valve BV 2 valve BV 2. Press "E". Burner control The fuel valve 1 closes Check the nozzle, unit fault too late vent the oil supply...
  • Page 75 Troubleshooting Fault codes (cont.) Display fault System char- Cause Measures code acteristics Burner Strong interference Remove EMC in- blocked (EMC) field nearby or terference. If boiler coding card/main equipment will not PCB faulty restart, check boiler coding card and replace it or the control unit.
  • Page 76 Troubleshooting Repairs (cont.) 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. 3. Where actual values strongly devi- ate from the curve values, discon- nect the wires at the sensor and repeat test immediately at the sen- sor.
  • Page 77 Troubleshooting Repairs (cont.) Checking the boiler water temperature sensor, cylinder tem- perature sensor or the flow temperature sensor for the low loss header 1. Boiler water temperature sensor: Pull the leads from boiler tempera- ture sensor A and check the resis- tance.
  • Page 78 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 79 Troubleshooting Repairs (cont.) 1. Pull the leads from flue gas tem- perature sensor A. 2. Check the sensor resistance and compare it with the curve. 3. Replace the sensor in case of severe deviation.
  • Page 80 Troubleshooting Repairs (cont.) Checking the temperature limiter If the burner control unit cannot be reset after a fault shutdown, although the boiler water temperature is below approx. 90 °C: Pull the leads off temperature limiter Check the continuity of the tempera- ture limiter with a multimeter.
  • Page 81 Troubleshooting Repairs (cont.) Replacing the air vent valve 1. Removing the burner (see page 21). 2. Drain the primary side of the boiler system, until the pressure gauge indicates "0". 3. Grip the silencer and remove safety spring A. 4. Remove air vent valve B with intermediate piece C by pulling it upwards.
  • Page 82 Troubleshooting Repairs (cont.) Checking the fuse 1. Switch OFF the power. 3. Remove cover A. 2. Release the lateral closures and 4. Check fuse F1. pivot the control unit down.
  • Page 83 Troubleshooting Repairs (cont.) Extension kit for heating circuit with mixer Checking the rotational direction of Changing the rotational direction of the mixer motor the mixer motor (if required) Danger An electric shock can be life-threatening. Before opening the equip- ment, switch OFF the ON/ OFF switch and remove the mains voltage, for example by means of the fuse or the...
  • Page 84 Troubleshooting Repairs (cont.) Switch position I for central heating Switch position II for central heating return from the left (delivered condi- return from the right. tion). Checking the Vitotronic 050 (accessories) The Vitotronic 050 is connected to the control unit via the LON system. To test the connection, implement a user check at the boiler control unit (see page 31).
  • Page 85 Function description Control Heating mode The control unit determines a set boil- er water temperature subject to out- side temperature or room temperature (if a room temperature-dependent remote control is connected) and the heating curve slope/level. The deter- mined set boiler water temperature is then transferred to the burner control unit.
  • Page 86 Function description Control (cont.) DHW heating boost The heating booster function is acti- vated, if a switching period is selected for the fourth time phase. This period must lie outside the switching times for standard DHW heating to enable the control unit to recognise the sig- nal.
  • Page 87 Function description Control (cont.) E Control panel: F Rotary selector for the standard Time program, central room temperature heating G ON/OFF switch Time program DHW heating/DHW circulation pump (if connected to the control unit) Holiday program Date/time Reduced room tempera- ture Set DHW temperature O+F Emissions test function...
  • Page 88 Function description Control (cont.) Internal extension H3 The internal extension is integrated into the control unit casing. The fol- lowing functions are connected to the relay outputs: sÖ Internal circulation pump aXA Oil preheater...
  • Page 89 Function description Extensions for external connections (accessories) 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 via the exten- (terminals 1 - 2) sion: External operating mode chan-...
  • Page 90 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 via the exten- (terminals 1 - 2) sion:...
  • Page 91 Function description Control functions External operating mode changeover The "External operating mode chan- geover" function is connected via external extension input aVD. Coding address "91" enables the selection, which heating circuits the operating mode changeover should affect: Coding The op. mode changeover affects: 91:0 No changeover 91:1...
  • Page 92 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 93 Function description Control functions (cont.) Filling with the control unit switched ON If the system is to be filled with the control unit switched ON, the change- over valve will be moved to its central position via coding address "2F:2" and the pump will be started.
  • Page 94 Function description Control functions (cont.) Temperature profile: Diagram 3 code "F1:3" Temperature profile: Diagram 4 code "F1:4" Temperature profile: Diagram 5 code "F1:5" Temperature profile: Factory-set code "F1:6 to F1:15"...
  • Page 95 Function description Control functions (cont.) 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 the coding raised subject to outside temperature.
  • Page 96 Function description Control functions (cont.) 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 operation with standard room tem- temperature or flow temperature can perature, the boiler water or flow tem- be adjusted in the coding addresses perature will be raised in accordance...
  • Page 97 Function description Remote control DIP switch The DIP switches are located on the PCB in the top part of the casing. Remote control DIP switch set- affects ting Heating circuit without mixer A1 Heating circuit with mixer M2 When connecting a separate room temperature sensor, set DIP switch "3"...
  • Page 98 Designs Connection and wiring diagrams internal connections § Boiler water temperature sen- Temperature limiter Ignition unit Flue gas temperature sensor a-Ö dÖ Stepper motor for diverter a-ÖA Fan control valve Air pressure switch...
  • Page 99 Designs Connection and wiring diagrams external connections Main PCB Power supply unit...
  • Page 100 Designs Connection and wiring diagrams external . . . (cont.) Optolink Flow temperature sensor, low Burner control unit loss header Programming unit Cylinder temperature sensor Coding card sÖ Internal circulation pump Connection adaptor fÖ Power supply LON communication module aXA Oil preheater Internal extension H1 aXF Flame monitor ON/OFF switch...
  • Page 101 Parts lists Parts lists Spare parts information 031 Small parts comprising: Quote the part and serial no. (see 31a M Pan-head screw M6 x 20 type plate) and the item number of the 31b Hexagon nut M 8 required part (as per this parts list). 31d Cheese-head screw M5 x Obtain standard parts from your local supplier.
  • Page 102 069 Oil filter changeover set 089 Connection adaptor 070 Oil filter insert; Microtec 090 Coding card 097 Cable harness X8/X9 091 Fuse 098 Vitoplus 300 terminal strip 093 Programming unit 099 Linear stepper motor connecting 095 Locking bracket cable 110 Outside temperature sensor...
  • Page 103 Parts lists Parts lists (cont.)
  • Page 104 Parts lists Parts lists (cont.)
  • Page 105 Parts lists Parts lists (cont.)
  • Page 106 Parts lists Parts lists (cont.)
  • Page 107 Parts lists Parts lists (cont.)
  • Page 108 Commissioning/service reports Commissioning/service reports Setting and test values Initial start-up Date: Oil pressure Stage 1 actual Stage 2 actual Vacuum actual after maint. Carbon dioxide content Stage 1 actual % vol. % vol. Stage 2 actual % vol. % vol. Oxygen content O Stage 1 actual...
  • Page 109 Commissioning/service reports Commissioning/service reports (cont.) Service Service Service Service...
  • Page 110 Commissioning/service reports Commissioning/service reports (cont.) Setting and test values Service Date: Oil pressure Stage 1 actual Stage 2 actual Vacuum actual after maint. Carbon dioxide content Stage 1 actual % vol. % vol. Stage 2 actual % vol. % vol. Oxygen content O Stage 1 actual...
  • Page 111 Commissioning/service reports Commissioning/service reports (cont.) Service Service Service Service...
  • Page 112 Commissioning/service reports Commissioning/service reports (cont.) Setting and test values Service Date: Oil pressure Stage 1 actual Stage 2 actual Vacuum actual after maint. Carbon dioxide content Stage 1 actual % vol. % vol. Stage 2 actual % vol. % vol. Oxygen content O Stage 1 actual...
  • Page 113 Commissioning/service reports Commissioning/service reports (cont.) Service Service Service Service...
  • Page 114 Specification Specification Rated voltage: 230 V ~ Control thermostat Rated frequency: 50 Hz and temperature Rated current : 6.0 A controller settings: 75 °C Safety class: Temperature limiter Protection: IP 20 setting: 100 °C Line fuse (mains): max. 16 A Permissible ambient temperatures during operation: 0 to +40 °C...
  • Page 115 Low temperature (LT) boilers The product characteristics determined as system values for the product Vitoplus 300 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 116 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]. Oil fired condensing boiler Vitoplus Allendorf 11.10.04...
  • Page 117 Keyword index Keyword index Acknowledging a fault display Fault code ..Adjusting the air volume Table ............Adjusting the ignition electrodes Fault display layout .
  • Page 118 Keyword index Keyword index (cont.) Parts list Temperature limiter ........
  • Page 120 12.9 to 19.3 kW from serial no. 7182 214 4 00001 16.1 to 23.5 kW from serial no. 7182 215 4 00001 Viessmann Werke GmbH&Co KG Viessmann Limited D-35107 Allendorf Hortonwood 30, Telford Telefon: +49 6452 70-0 Shropshire, TF1 7YP, GB...

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