Viessmann Vitodens 300-W Service Manual
  1. Manuals
  2. Brands
  3. Viessmann Manuals
  4. Boiler
  5. VITODENS 300-W
  6. Service manual

Viessmann Vitodens 300-W Service Manual

Wall mounted gas fired condensing boiler natural gas and lpg version
Hide thumbs Also See for Vitodens 300-W:
Table of Contents

Advertisement

Quick Links

See also: Technician Manual , Technical Manual
VIESMANN
Service instructions
for contractors
Vitodens 300-W
Type WB3C, 3.8 to 35.0 kW
Wall mounted gas fired condensing boiler
Natural gas and LPG version
For applicability, see the last page
VITODENS 300-W
Please keep safe.
5692 673 GB
5/2008

Advertisement

Table of Contents
loading

Related Manuals for Viessmann Vitodens 300-W

Summary of Contents for Viessmann Vitodens 300-W

  • Page 1 VIESMANN Service instructions for contractors Vitodens 300-W Type WB3C, 3.8 to 35.0 kW Wall mounted gas fired condensing boiler Natural gas and LPG version For applicability, see the last page VITODENS 300-W Please keep safe. 5692 673 GB 5/2008...

  • Page 2: Safety Instructions

    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 Instal- charge static loads. ling non-authorised compo- nents and non-approved modifications/conversion can compromise safety and may invalidate our warranty. 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......................36 Code 2......................39 Service scans Service level overview ................61 Temperatures, boiler coding card and brief scans ........62 Checking outputs (relay test) ..............

  • Page 5: Commissioning, Inspection, Maintenance

    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 21. Checking the diaphragm expansion vessel and system pressure ..............22.

  • Page 7: Further Details Regarding The Individual Steps

    Only use fill water of potable quality. Soften fill water with hardness exceeding 3.0 mol/m , e.g. using a small softening system for heating water (see 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 3. Open valves A and B, and vent heating water side. at mains pressure until no sound of escaping air can be heard. 2.

  • 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". Note To call up code 1 and for setting the coding address, see page 36. For function and sequence of the venting program, see page 97.

  • Page 10: Setting The Time And Date (If Required) Only For Weather-Compensated Control Units

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Setting the time and date (if required) only for weather- compensated control units Note Date (see step 2) During commissioning, or after a prolonged time out of use, it may be necessary to reset the time and date, if the time flashes in the dis- play.

  • Page 11: Checking The Gas Type

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) 3. c press this button again, 4. b for the required language. "Außentemperatur" (outside temperature) is displayed. 5. d to confirm. Checking the gas type The boiler is equipped with an electronic combustion control unit that adjusts the burner for optimum combustion in accordance with the prevailing gas qual- ity.

  • Page 12: Gas Type Conversion (Only For Operation With Lpg)

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Gas type conversion (only for operation with LPG) 1. Set adjusting screw A at the gas train to "2". 2. Switch ON system ON/OFF switch "8". 3. Adjust the gas type (see page "82"): Call up code 2 In coding address "11", select...
  • Page 13 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Ignition Fault F4 Check the ignition module (control voltage 230 V across plugs "X2.1" and "X2.2") Gas train opens Fault F4 Check the gas train (control vol- tage 230 V); check the gas supply pressure Ionisation cur-...

  • Page 14: Checking The Static And Supply Pressure

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) For further details regarding faults, see page 71. Checking the static and supply pressure Danger Higher CO emissions can lead to poisoning. Check the CO emissions before and after any work on gas appliances, to prevent any health hazards and to ensure the perfect operational condi- tion of the system.

  • Page 15: Setting The Maximum Output

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) 6. Check the supply (flow) pressure. 8. Shut down the boiler, close the gas Set values: shut-off valve, remove the pressure Natural gas 20 mbar gauge and close test nipple A LPG 50 mbar with the screw.

  • Page 16: Checking The Balanced Flue System For Tightness (Annular Gap Check)

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) 2. Press K and F simultaneously 5. Record the settings for maximum until a value flashes (e.g. "85") and output on the additional type plate "A" appears. In the delivered con- included with the "technical docu- dition, this value represents 100 % mentation".

  • Page 17: Removing The Burner And Checking The Burner Gasket (Replace Gasket Every 2 Years)

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) The flue pipe is deemed to be gas- If actual CO values are higher or O tight if the CO concentration in the values are lower, then pressure test combustion air is no higher than 0.2 % the flue pipe with a static pressure of or the O concentration is at least...

  • Page 18: Checking The Burner Gauze Assembly

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) 5. Release four nuts G and remove 6. Check burner gasket H for the burner. damage. Generally replace the burner gas- Please note ket every 2 years. Prevent damage to the wire gauze.

  • Page 19: Checking And Adjusting The Ignition And Ionisation Electrodes

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) 4. Insert a new burner gauze assem- bly with a new gasket and secure with three nuts. Note Torque: 4 Nm Checking and adjusting the ignition and ionisation electro- A Ignition electrodes C For 3.8 to 19 kW B Ionisation electrode D For 5.2 to 35 kW...

  • Page 20: Cleaning The Combustion Chamber/Heating Surfaces And Fitting The Burner

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Cleaning the combustion chamber/heating surfaces and fit- ting the burner Please note Scratches on parts that are in contact with flue gas can lead to corrosion. Never use brushes to clean the heat exchanger. 1.

  • Page 21: 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 retaining clip A and siphon B. 3. Clean siphon B. 4.

  • Page 22: Checking All Gas Equipment For Tightness At Operating Pressure

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Checking all gas equipment for tightness at operating pres- sure Danger Escaping gas leads to a risk of explosion. Check gas equipment for tight- ness. Checking the combustion quality The electronic combustion control unit automatically ensures an optimum com- bustion quality.

  • Page 23: Matching The Control Unit To The Heating System

    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 24 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) System version 1 One heating circuit without mixer A1 (with/without DHW heating) 1 Vitodens 300-W 3 Vitotrol 100 (only for constant 2 Outside temperature sensor (only temperature control units) for weather-compensated control...
  • Page 25 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) 1 Vitodens 300-W 7 Temperature limiter for limiting the 2 Outside temperature sensor max. temp. of underfloor heating 3 DHW cylinder systems 4 Cylinder temperature sensor 8 Flow temperature sensor M2...
  • Page 26 (cont.) System version 3 One heating circuit without mixer A1 and one heating circuit with mixer M2 with system separation (with/without DHW heating) 1 Vitodens 300-W 8 Flow temperature sensor M2 2 Outside temperature sensor 9 Heating circuit pump M2...
  • Page 27 System version 4 One heating circuit without mixer A1 with a separate heating circuit pump and one heating circuit with mixer M2 (with/without DHW heating) 1 Vitodens 300-W 8 Temperature limiter for limiting the 2 Outside temperature sensor max. temp. of underfloor heating...
  • Page 28 One heating circuit with mixer M1 (with Vitotronic 200-H), one heating cir- cuit with mixer M2 (with extension kit) and low loss header (with/without DHW heating) 1 Vitodens 300-W qP Temperature limiter for limiting the 2 Outside temperature sensor max. temp. of underfloor heating...

  • Page 29: 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 30 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 31 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 32: 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 33 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Boiler control unit Vitotronic 200-H Vitotronic 200-H Vitocom Control unit trans- Control unit re- Control unit re- mits outside tem- ceives outside tem- ceives outside tem- perature perature perature Set code "97:2" Set code "97:1"...

  • Page 34: Instructing The System User

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Press the following keys: 4. "Check OK" is displayed during communication between both 1. L + d simultaneously for devices. approx. 2 s. The subscriber check has been initiated. "Check not OK" is displayed if there is no communication 2.
  • Page 35 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) 3. d The service display will be Note cleared (for a weather- An acknowledged service message compensated control unit: can be redisplayed by pressing d "Acknowledge: Yes", (approx. 3 s). reconfirm with d).

  • Page 36: Coding

    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 37 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 5:...
  • Page 38 Coding Code 1 (cont.) Coding in the delivered condition Possible change Subscriber no. 77:1 LON subscriber number 77:2 LON subscriber number, adjustable from 1 to 99: 77:99 1 - 4 = Boiler 5 = Cascade 10 - ... = Vitotronic 200-H 99 = Vitocom Note Allocate each number...

  • Page 39: Code 2

    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 40 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 41 Coding Code 2 (cont.) 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 5:...
  • Page 42 Coding Code 2 (cont.) Coding in the delivered condition Possible change 0E:0 System pressure below 0E:1 Max. system pressure maximum value exceeded during opera- tion. Fault message "A4" is displayed as long as the max. system pres- sure is exceeded. After the fault has been removed, reset the cod- ing address manually to...
  • Page 43 Coding Code 2 (cont.) Coding in the delivered condition Possible change 2E:0 Without external exten- 2E:1 With external extension sion (automatic setting on connection) 2F:0 Venting program/fill pro- 2F:1 Venting program enabled gram disabled 2F:2 Fill program enabled 30:2 Internal variable speed 30:0 Internal circulation pump circulation pump with...
  • Page 44 Coding Code 2 (cont.) Value Internal circu- Heating circuit Heating circuit Circulation address lation pump pump pump pump for cylin- 32: ... Heating circuit Heating circuit der heating without mixer with mixer Control funct. Control funct. Control funct. Control funct. Control funct.
  • Page 45 Coding Code 2 (cont.) Value Internal Heating cir- Heating cir- Circulation pump for address circulation cuit pump cuit pump cylinder heating 34: ... pump Heating cir- Heating cir- cuit without cuit with mixer mixer Control funct. Control Control funct. Control funct. funct.
  • Page 46 Coding Code 2 (cont.) Coding in the delivered condition Possible change 51:0 Internal circulation 51:1 When there is a heat de- pump is always started mand, the internal circu- when there is a heat de- lation pump will only be mand started when the burner is operational.
  • Page 47 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: Third 67:0 Without third set DHW...
  • Page 48 Coding Code 2 (cont.) Coding in the delivered condition Possible change 6F:... Maximum output for 6F:0 Max. output during DHW DHW heating in %; de- heating adjustable from 0 faulted by the boiler 6F:100 to 100 % coding card 71:0 DHW circulation pump: 71:1 "OFF"...
  • Page 49 Coding Code 2 (cont.) Coding in the delivered condition Possible change 7b:1 With LON communica- 7b:0 Do not transmit time tion module: The control unit transmits the time (only for weather-com- pensated control units) 7F:1 Detached house (only 7F:0 Apartment block for weather-compen- Separate adjustment of sated control units)
  • Page 50 Coding Code 2 (cont.) Coding in the delivered condition Possible change 85:0 Standard mode 85:1 Manual calibration of the combustion controller (only adjustable if coding address 11:9 has been set). The red fault indicator also flashes during cali- bration. The process has terminated when the red fault indicator no longer flashes (after approx.
  • Page 51 Control unit transmits sensor connected to the outside temperature control unit is utilised internally (only for weather-compensated control units) 98:1 Viessmann system 98:1 System number adjusta- number (in conjunction ble from 1 to 5 with monitoring several 98:5 systems via...
  • Page 52 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 53 Coding Code 2 (cont.) Coding in the delivered condition Possible change Boiler circuit, mixer circuit A4:0 With frost protection A4:1 No frost protection, ad- (only for weather-com- justment only possible if pensated control units) coding address "A3: -9" has been selected. Note Observe the note for code "A3"...
  • 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 function disabled (only is enabled, i.e. the burner for weather-compen- A6:35 and heating circuit pump sated control units) are switched OFF and the mixer will be closed at a variable value that is...
  • 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" if the set value justable from 1 to 15 changes through a A9:15 change in 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 + 5 K; disabled RT < RT + 4 K actual actual enabled RT > RT + 4 K;...
  • Page 57 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 58 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 59 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 60: 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 61: Service Scans

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

  • Page 62: Temperatures, Boiler Coding Card And Brief Scans

    Service scans Service level overview (cont.) Function Key combination Exit Page Resetting codes to their Press L and G simulta- delivered condition neously for approx. 2 s; then e Temperatures, boiler coding card and brief scans Weather-compensated control unit Press the following keys: 2.
  • Page 63 Service scans Temperatures, boiler coding card and brief . . . (cont.) Brief Display screen scan System designs 01 Number Maximum demand temperature to 06 of KM Display in accor- dance with the sys- subscri- tem equipment level bers Software Software Software Software...
  • Page 64 Service scans Temperatures, boiler coding card and brief . . . (cont.) Brief Display screen scan Internal circulation Heating circuit pump to connection ex- pump tension Variable Software Variable Software Variable Software speed version speed version speed version variable pump variable pump variable...

  • Page 65: Checking Outputs (Relay Test)

    Service scans Temperatures, boiler coding card and brief . . . (cont.) Brief scan Display screen 0: no ex- 0: no exter- External 0 to 10 V hook-up ternal de- nal block- Display in °C mand 0: no external hook-up 1: external 1: external demand...
  • Page 66 Service scans Checking outputs (relay test) (cont.) Display screen Explanation Htg. system valve Diverter valve set to heating mode Valve in middle pos. Diverter valve in central position (filling/draining) DHW valve Diverter valve set to DHW mode Htg.cir.pump M2 On Mixer extension Mix.valve open Mixer extension...

  • Page 67: Scanning Operating Conditions And Sensors

    Service scans Scanning operating conditions and sensors Weather-compensated control unit Press the following keys: 3. c press again. 1. c "Select heating circuit" is 4. a/b for the required operating displayed. condition. 2. d to confirm; wait approx. 5. d Scanning is completed.
  • Page 68 Service scans Scanning operating conditions and sensors (cont.) Display screen Explanation Centr. fault ind. OFF/ON If an external extension is installed Mix. valve OPEN/CLOSE If an extension kit for one heating circuit with mixer is installed Solar pump OFF/ON If a Vitosolic is installed Solar pump, ...h Actual hours run Various languages...

  • Page 69: Troubleshooting

    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 a fault, the fault code and fault symbol is displayed at the pro- gramming unit...

  • Page 70: Troubleshooting Fault Display

    Troubleshooting Fault display (cont.) Collector sensor Remote control Solar DHW sensor Fault participant 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 71: 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 72 Troubleshooting Fault codes (cont.) Fault Const. weath.- System char- Cause Measures code comp. acteristics on the display Regulates System flow Check the low without flow temperature loss header sen- temperature sensor lead sor (see page 83). sensor (low broken loss header) Burner Boiler water Check the boiler...
  • Page 73 Troubleshooting Fault codes (cont.) Fault Const. weath.- System char- Cause Measures code comp. acteristics on the display Control mode Collector Check the sensor temperature at the Vitosolic. sensor shorted out; connects to the Vitosolic at S1 Control mode Cylinder Check the sensor temperature at the Vitosolic.
  • Page 74 Troubleshooting Fault codes (cont.) Fault Const. weath.- System char- Cause Measures code comp. acteristics on the display Control mode Temperature Check the sensor sensor lead at the Vitosolic. broken; con- nects to the Vitosolic at Control mode Solar control Check the solar unit fault;...
  • Page 75 Troubleshooting Fault codes (cont.) Fault Const. weath.- System char- Cause Measures code comp. acteristics on the display Burner Air in the in- Vent the system if blocked. The ternal circu- the fault message venting pro- lation pump continues to be gram is started displayed automatically...
  • Page 76 Troubleshooting Fault codes (cont.) Fault Const. weath.- System char- Cause Measures code comp. acteristics on the display Burner Boiler coding Plug in boiler cod- blocked card miss- ing card or re- ing, faulty or place it, if faulty. incorrect boiler coding card Burner Flue gas...
  • Page 77 Troubleshooting Fault codes (cont.) Fault Const. weath.- System char- Cause Measures code comp. acteristics on the display Control mode, Communica- Check the setting max. pump tion fault, of coding address speed variable "30" speed inter- nal pump Control mode, Communica- Check setting of max.
  • Page 78 Troubleshooting Fault codes (cont.) Fault Const. weath.- System char- Cause Measures code comp. acteristics on the display 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...
  • Page 79 Troubleshooting Fault codes (cont.) Fault Const. weath.- System char- Cause Measures code comp. acteristics on the display Burner in a The ionisa- Check the ionisa- fault state tion current tion electrode and lies outside cable. the permissi- Check the flue ble range gas system for during cali-...
  • Page 80 Troubleshooting Fault codes (cont.) Fault Const. weath.- System char- Cause Measures code comp. acteristics on the display Burner in a The tem- Check the heating fault state perature lim- system fill level. iter has Check the circula- responded. tion pump. Vent the system.
  • Page 81 Troubleshooting Fault codes (cont.) Fault Const. weath.- System char- Cause Measures code comp. acteristics on the display Burner in a The fuel Check the gas fault state valve closes train. Check both too late. control paths. Press "E RESET". Burner in a Fan speed Check the fan, fault state...

  • Page 82: Repairs

    Troubleshooting Fault codes (cont.) Fault Const. weath.- System char- Cause Measures code comp. acteristics on the display Burner Boiler coding Press "E blocked or in a card or main RESET". Replace fault state PCB faulty boiler coding card or control unit if the fault persists Burner Internal fault...
  • Page 83 Troubleshooting Repairs (cont.) 2. Test the resistance of the outside 3. Where actual values strongly devi- temperature sensor across term- ate from the curve values, discon- inals "X3.1" and "X3.2" on the dis- nect the wires at the sensor and connected plug and compare it with repeat test immediately at the sen- the curve.
  • Page 84 Troubleshooting Repairs (cont.) 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 resistance. Flow temperature sensor: Pull plug "X3"...
  • Page 85 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. Checking the temperature limiter Check the temperature limiter, if the burner control unit cannot be reset after a fault shutdown, although the boiler water temperature is below approx.
  • Page 86 Troubleshooting Repairs (cont.) 1. Pull the leads from temperature lim- iter A. 2. Check the continuity of the tem- perature limiter with a multimeter. 3. Remove the faulty temperature lim- iter. 4. Install a new temperature limiter. 5. After commissioning, press reset button "E RESET"...
  • Page 87 Troubleshooting Repairs (cont.) 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 2.
  • Page 88 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- A ON/OFF switch ing return from the right. B Rotational direction switch 1.

  • Page 89: Function Description

    Function description Constant temperature control unit Control and display elements A Pressure gauge D ON indicator (green) B Fault indicator (red) E Reset button C Optolink interface F User interface only in conjunction with the diag- G ON/OFF switch nostic adaptor (accessory) and Vitosoft (accessory) Keys at the user interface: Set boiler water tempera-...

  • Page 90: 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 91: Dhw Heating

    Function description Weather-compensated control unit (cont.) DHW only Setting values Heating and DHW Confirmation Party mode Information Economy mode Standard settings (Reset) Heating operation The control unit determines a set boil- The determined set boiler water tem- er water temperature subject to out- perature is transferred to the burner side temperature or room temperature control unit.

  • Page 92: Internal Extension H1

    Function description Weather-compensated control unit (cont.) Internal extension H1 The internal extension H1 is inte- DHW circulation pump (code 53:1, grated into the control unit casing. delivered condition) The following alternative functions Heating circuit pump for a heating can be connected to relay output sK. circuit without mixer (code 53:2) The function is allocated via coding An external safety valve can be con-...

  • Page 93: Extensions For External Connections (Accessories)

    Function description Extensions for external connections (accessories) 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. The Cylinder primary pump (coding function is allocated via coding address "53:3")

  • Page 94: External Extension H

    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 95 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 96: 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 97 Function description Control functions (cont.) External blocking The "External blocking" function is In coding address "32" you can select connected via external extension the influence the "Ext. blocking" sig- input "aVD". nal should have on the connected cir- culation pumps. External demand The "External demand"...
  • Page 98 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 code "2F:2"...
  • Page 99 Function description Control functions (cont.) Temperature profile 2: (ZV parquet and flooring technology) code "F1:2" Temperature profile 3: Code "F1:3" Temperature profile 4: Code "F1:4" Temperature profile 5: Code "F1:5"...
  • Page 100 Function description Control functions (cont.) Temperature profile 6: Code "F1:6" Temperature profile 7: Code "F1:15" 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 raised subject to the outside tempera-...
  • Page 101 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 102: 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 103: Electronic Combustion Control Unit

    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 104 Function description Electronic combustion control unit (cont.) Air factor content Air factor content content content content (%) for natur- (%) for natur- (%) for LPG P al gas E al gas LL 1.24 10.9 1.27 10.6 1.30 10.3 1.34 10.0 1.37 1.40 1.44...

  • Page 105: Designs

    Designs Connection and wiring diagram internal connections Main PCB dÖ Stepper motor for diverter X ... Electrical interfaces valve § Boiler water temperature sen- Temperature limiter Ignition unit Ionisation electrode a-Ö Fan motor Flue gas temperature sensor a-ÖA Fan motor control...
  • Page 106 Designs Connection and wiring diagram internal . . . (cont.) Water pressure sensor a:Ö Modulation coil...

  • Page 107: Connection And Wiring Diagram External Connections

    Designs Connection and wiring diagram external connections Main PCB Power supply unit...

  • Page 108: Connection And Wiring Diagram

    Designs Connection and wiring diagram external . . . (cont.) Optolink DHW circulation pump Burner control unit Programming unit External heating circuit pump Coding card Connection adaptor Circulation pump for cylinder LON communication module heating Internal extension H1 Gas solenoid valve ON/OFF switch fÖ...

  • Page 109: Parts Lists

    Parts lists Parts lists Spare parts information 039 Back panel lid Quote the part and serial no. (see (only for serial no. 7199 537 ... type plate) and the item no. of the and 7199 538 ...) required part (as per this parts list). 041 Plug-in connector gaskets (set) Obtain standard parts from your local 052 Burner gauze assembly...
  • Page 110 Parts lists Parts lists (cont.) 200 Front panel (with item 201) 102 Gas solenoid valve connecting 201 Fixing clip cable dG 103 Power cable, stepper motor Wearing parts 104 Earth/ignition module cable har- 050 Burner gasket ness 051 Insulation ring 105 Cable harness, ionisation cable/ 054 Ignition electrode block KM BUS, internal...
  • Page 111 Parts lists Parts lists (cont.)
  • Page 112 Parts lists Parts lists (cont.)
  • Page 113 Parts lists Parts lists (cont.)
  • Page 114 Parts lists Parts lists (cont.)

  • Page 115: Commissioning/Service Reports

    Commissioning/service reports Commissioning/service reports Setting and test va- Set value Commis- Service lues sioning 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 116: Specification

    Specification Specification Rated voltage: 230 V Permissible ambient temperature Rated frequency: 50 Hz during operation: 0 to +40 °C Rated current: 6.0 A during storage Safety class: and transport: -20 to +65 °C IP X 4 D to Protection: EN 60529 Electronic tempera- ture limiter setting: 82 °C (fixed)

  • Page 117: Certificates

    Certificates Declaration of conformity Declaration of conformity for the Vitodens 300-W We, Viessmann Werke GmbH&Co KG, D-35107 Allendorf, confirm as sole responsible body that the product Vitodens 300-W complies with the following standards: EN 483 EN 55 014 EN 625...

  • Page 118: 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 pro- duct Vitodens 300-W complies with the NO limits specified by the 1st BImSchV paragraph 7 (2) [Germany]. Allendorf, 4. September 2007 Viessmann Werke GmbH&Co KG...

  • Page 119: Keyword Index

    Keyword index Keyword index Acknowledging a fault display Electronic combustion controller ..Extension kit for heating circuit with mixer ......... . Boiler water temperature sensor Extension .
  • Page 120 Keyword index Keyword index (cont.) Ignition Scanning .........
  • Page 124 5.2 to 26.0 kW from serial no. 7199 539 7 00001 7.0 to 35.0 kW from serial no. 7199 540 7 00001 Viessmann Werke GmbH&Co KG Viessmann Limited D-35107 Allendorf Hortonwood 30, Telford Telephone: +49 6452 70-0 Shropshire, TF1 7YP, GB...

This manual is also suitable for:

Wb3c

Table of Contents