Viessmann VITODENS 300 WB3A Service Instructions Manual
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Viessmann VITODENS 300 WB3A Service Instructions Manual

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VIESMANN

Installation instructions

for heating engineers
Vitodens 300
Type WB3A, 49 and 66 kW
Gas fired wall mounted condensing boiler
natural gas and LPG version
VITODENS 300
Dispose after installation
5862 570 GB
5/2004

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Summary of Contents for Viessmann VITODENS 300 WB3A

  • Page 1: Installation Instructions

    VIESMANN Installation instructions for heating engineers Vitodens 300 Type WB3A, 49 and 66 kW Gas fired wall mounted condensing boiler natural gas and LPG version VITODENS 300 Dispose after installation 5862 570 GB 5/2004...
  • Page 2 Safety instructions Please follow these safety instructions closely to prevent accidents and material losses. Safety instructions explained Before working on the equipment/ heating system, isolate the mains Important information electrical supply (e.g. by removing a This symbol warns against the separate mains fuse or by means of a risk of material losses and mains electrical isolator) and safe-...

  • Page 3: Table Of Contents

    Index Preparing for installation Product information ..................Preparations for boiler installation ............... Installation Installing the boiler and making all connections ........... & Wall mounting bracket installation ............& Hanging the boiler into the wall mounting bracket ........Heating water (primary) connection............. Flue gas connection..................

  • Page 4: Product Information

    Product information Vitodens 300, Type WB3A Set up for operation with natural gas E or LPG P. The natural gas E version can be converted to natural gas LL using a conver- sion kit. The LPG P version can be converted to natural gas E or LL using a conversion kit.
  • Page 5 Preparations for boiler installation (cont.) C DHW cylinder flow G1½" G Expansion vessel D Gas connection H Cable arrangement area E DHW cylinder return G1½" K Recommended dimension F Heating return G1½" L Condensate drain 1. Prepare the water connections. 3.

  • Page 6: Installing The Boiler And Making All Connections

    Installing the boiler and making all connections Wall mounting bracket installation Note The enclosed screws and rawl plugs are only suitable for concrete. For other construction materials, use fixings which are suitable for 110 kg loads. A Reference point: boiler top edge C Top edge finished floor B Boiler installation template D Recommendation...

  • Page 7: Hanging The Boiler Into The Wall Mounting Bracket

    Installing the boiler and making all connections (cont.) Hanging the boiler into the wall mounting bracket...

  • Page 8: Heating Water (Primary) Connection

    Heating water (primary) connection Connect the boiler to the on-site pipe- work. A Heating flow B DHW flow C Gas connection D DHW return E Heating return F Expansion vessel Flue gas connection Connect the balanced flue pipe. Flue gas system installation instructions Condensate connection Connect the condensate drain with a...

  • Page 9: Gas Connection

    Gas connection Information regarding operation with LPG We recommend the installation of an external safety solenoid valve when installing the boiler in rooms below ground level. 1. Carry out a leak test. Important information Excessive test pressure leads to damage to the boi- A Gas connection ler and gas train.

  • Page 10: Opening The Control Unit Housing

    Opening the control unit housing...

  • Page 11: Electrical Connections

    Electrical connections Notes regarding the connection of accessories For details of accessories, also observe the separate installation instruc- tions provided. A Radio clock connection B Heating circuit pump or boiler cir- cuit pump...
  • Page 12 Electrical connections (cont.) C Vitotrol 100 UTD (only for control units operating with a constant temperature) D Vitotrol 100 UTA (only for control units operating with a constant temperature) Plug 230 V~ Low voltage plug fÖ Power supply Outside temperature sensor &...

  • Page 13: Routing Connecting Cables

    Electrical connections (cont.) Routing connecting cables Important information Connecting cables are damaged if they touch hot components. When routing and securing connecting cables on site, ensure that the maximum permissible cable temperatures are not exceeded. A Low voltage connections D Main PCB B 230 V connections E Communications module C Internal extension...

  • Page 14: Closing Control Unit Housing And Inserting User Interface

    Closing control unit housing and inserting user interface...

  • Page 15: Front Panel Installation

    Front panel installation Commissioning and adjustments For commissioning and adjustment, see service instructions.
  • Page 16 Viessmann Limited Hortonwood 30, Telford, TF1 7YP, GB Telephone: +44 1952 675000 Fax: +44 1952 675040 www.viessmann.co.uk...
  • Page 17 VIESMANN Service instructions for heating engineers Vitodens 300 Type WB3A, 49 and 66 kW Gas fired wall mounted condensing boiler natural gas and LPG version See applicability on the last page VITODENS 300 Please keep safe 5692 550 GB 5/2004...
  • Page 18 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 19 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 20 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......................42 Resetting the coding to the delivered condition ........... 62 Service scans Service level summary ................63 Temperatures, boiler coding card and brief scans ........

  • Page 21: 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 22: Commissioning Steps

    Initial start-up, inspection, maintenance Steps - initial start-up, inspection and maintenanc . . . (cont.) Commissioning steps Inspection steps Maintenance steps Page • • 20. Cleaning the combustion chamber/heating surfaces and installing the burner ....... . . •...

  • Page 23: Further Details Regarding The Individual Steps

    Initial start-up, inspection, maintenance Further details regarding the individual steps Filling the heating system 1. Check the charge pressure of the diaphragm expansion vessel. 2. Close the gas shut-off valve. Important information Unsuitable fill water increases the level of depos- its and corrosion and may lead to boiler damage.

  • Page 24: 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 to the boiler fill & drain valve B. 3. Open valves A and B, and vent at mains pressure, until no sound of escaping air can be heard.

  • Page 25: Filling The Siphon With Water

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

  • Page 26: Checking The Gas Type

    Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Checking the gas type Important information The natural gas version cannot be converted to LPG. 1. Enquire about the gas type and 3. If these details do not match the Wobbe index (Wo) from your local fuel provided, the burner must be mains gas or LPG supplier.
  • Page 27 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Display screen Remedy Control unit Set value issues heat demand Fan starts After approx. Check cables and 51 seconds plug-in connec- Fault tions Differential pres- After approx. Check fan cables sure sensor 51 seconds and fan plug-in...

  • Page 28: Checking Static And Supply Pressure

    Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Ionisation cur- Fault Check electrode rent builds adjustment and (higher than gas pipe for air- 5 µA) locks Symbol A Operational bur- Stops below set Check flue gas boiler tempera- system for sound- ture and restarts ness (flue gas...
  • Page 29 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) 1. Close the gas shut-off valve. 2. Release the screw inside test nip- ple PE A on the gas combination valve , but do not remove, and con- nect the pressure gauge. 3.

  • Page 30: Checking The Co 2 Settings

    Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Supply (flow) Supply (flow) Remedy pressure for nat- pressure for ural gas Below 17.4 mbar Below 42.5 mbar Do not start up. Notify your mains gas or LPG supplier. 17.4 to 57.5 mbar 42.5 to Start up boiler.
  • Page 31 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) & 6.6 to 10.0 % for natural gas E & 7.0 to 10.0 % for natural gas LL and & approx. 10.0 % for LPG P. Compare the actual CO value with the above CO value ranges for the indivi- dual gas groups (check the gas group with your mains gas or LPG supplier).

  • Page 32: Setting The Max. Output

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

  • Page 33: Checking The Balanced Flue System For Soundness (Annular Gap Check)

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

  • Page 34: 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) 1. Switch OFF the control unit ON/ OFF switch and the mains electrical supply. 2. Close the gas shut-off valve and safeguard against reopening.

  • Page 35: Checking The Burner Gauze Assembly

    Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Checking the burner gauze assembly Replace the burner gauze assembly if the wire mesh is damaged. 1. Remove electrodes A. 2. Turn thermal insulation ring B clockwise and remove. 3.
  • Page 36 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) 1. Check the electrodes for wear and 3. Check all clearances. If the gaps contamination. are not as specified or the electro- des are damaged, replace and 2. Clean the electrodes with a small align the electrodes together with brush (not with a wire brush) or new gaskets.
  • Page 37 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Cleaning the combustion chamber/heating surfaces and installing the burner 1. If required, clean combustion chamber A and heating surfaces B with a brush or flush with water. Important information Scratches on parts which are in contact with flue gases can lead to corrosion.
  • Page 38 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 39 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Checking the ionisation current 1. Remove the cable and connect the test equipment. 2. Set the upper rated output. Constant temperature control units: Press K and d simultaneously & for at least 2 seconds.

  • Page 40: Matching The Control Unit To The Heating System

    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 41 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Required coding Address Function relay of the internal extension: Cylinder loading 53:3 pump System design 2 With/without DHW heating with 1 heating circuit with mixer and system separation Outside temperature sensor Internal extension H1 or H2 Flow temperature sensor Cylinder temperature sensor...
  • Page 42 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Required coding Address 1 heating circuit with mixer & with DHW cylinder 00:4 & without DHW cylinder 00:3 Function relay of the internal extension: Cylinder loading 53:3 pump System design 3 With/without DHW heating with low loss header, 1 heating circuit without mixer and 1 heating circuit with mixer Outside temperature sensor...
  • Page 43 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Heating circuit pump heating cir- cuit with mixer Heating circuit pump heating cir- cuit without mixer (connection via external extension H1) Required coding Address — —...
  • Page 44 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) System design 4 With/without DHW heating with 3 or more heating circuits with mixer and low loss header ! Outside temperature sensor sK Cylinder loading pump (connec- ? Flow temperature sensor tion via internal extension H1 or % Cylinder temperature sensor sÖ...
  • Page 45 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) C Vitotronic 050 E Heating circuit pump D Maximum temperature controller F Mixer motor (underfloor heating) Required coding Address Function relay of the internal extension: Cylinder loading 53:3 pump...
  • Page 46 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) System design 5 Multi-boiler system with/without DHW heating with several heating circuits with mixer and low loss header fÖ Outside temperature sensor Power supply Flow temperature sensor heat- Mixer motor ing circuits KM BUS ?/§...
  • Page 47 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Required coding Address Multi-boiler system with Vitotronic 333 01:2 Note Codes for multi-boiler system, see Vitotronic 333 installation and operat- ing instructions. Connecting the control unit to the LON system (only for weather-compensated control units) The LON communication module (accessory) must be plugged in.
  • Page 48 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Boiler control Vitotronic 050 Vitotronic 050 Vitocom unit User no. 1 User no. 10 User no. 11 User no. 99 Code 77:1 Code 77:10 Set code 77:11 Control unit is Control unit is not Control unit is not Control unit is...
  • Page 49 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) 1. Press L and d simultaneously for approx. 2 seconds. User check initiated. 2. Select the required user with a and b. 3. Activate checking with d. "Check" flashes until its comple- A Consecutive list number tion.
  • Page 50 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 38). Value adjustable from 0.2 to 3.5. 2. Modify the slope in code 1 with cod- ing address d4 (see page 38).
  • Page 51 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Adjusting the set room temperature Standard room temperature: 1. Select a heating circuit: Press a. & 1r flashes on the display. & Select heating circuit A1 (heating circuit without mixer): Press d.
  • Page 52 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Reduced room temperature: 1. Select a heating circuit: Press a. & 1r flashes on the display. & Select heating circuit A1 (heating circuit without mixer): Press d. & Select heating circuit M2 (heating circuit with mixer): –...
  • Page 53 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Scanning and resetting the "Maintenance" display The red fault indicator flashes when the limits set via coding address 21 and 23 have been reached. As regards the operating interface display: &...
  • Page 54 Coding Code 1 Call 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 55 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 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...

  • Page 56: Coding Code 1

    Coding Code 1 (cont.) Coding in Function mode Coding Possible change the as change delivered Address: condition value Address: value Gas type 1E:0 Natural gas operation, 1E:1 LPG operation, defaulted defaulted by the boiler by the boiler coding card coding card Venting/filling 2F:0 Venting program dis-...
  • Page 57 Coding Code 1 (cont.) Coding in Function mode Coding Possible change the as change delivered Address: condition value Address: value Summer econ. M2 A5:5 With heating circuit A5:0 Without heating circuit pump logic function pump logic function Min. flow temp. A1 C5:20 Electronic limit of the C5:1...
  • Page 58 Coding Code 2 Calling up code 2 1. Press L and G simultaneously 3. Change this value with a and b; confirm with d. The display briefly for approx. 2 seconds; confirm with d. shows "adopted", then the address flashes again. Select additional addresses (if required) with a 2.

  • Page 59: Code 2

    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: 1 heating circuit without 1 heating circuit without mixer A1, without DHW mixer A1, with DHW heat- heating 00:3...
  • Page 60 Coding Code 2 (cont.) Coding in Function mode Coding Possible change the as change delivered Address: condition value Address: value 21:0 No maintenance indica- 21:1 The number of hours run tion before the burner should Burner 21:100 be serviced is adjustable from 100 to 10000 hours (each step represents 100 hours)
  • Page 61 Coding Code 2 (cont.) Coding in Function mode Coding Possible change the as change delivered Address: condition value Address: value 32:0 Signal "External lock- 32:1 Signal "External lockout" out" on circulation on circulation pumps: pumps: All pumps are 32:15 See the following table controlled Coding Internal...
  • Page 62 Coding Code 2 (cont.) Coding in Function mode Coding Possible change the as change delivered Address: condition value Address: value Boiler/burner 34:0 Signal "External 34:1 Signal "External demand" demand" on circulation on circulation pumps: pumps: All pumps are 34:23 See the following table controlled Coding Internal...
  • Page 63 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. Control Control funct. Control funct. funct. Control Control funct.
  • Page 64 Coding Code 2 (cont.) Coding in Function mode Coding Possible change the as change delivered Address: condition value Address: value 53:1 Function relay 2 of the 53:0 Function relay 2: Central internal extension: fault DHW circulation pump 53:2 Function relay 2: External heating circuit pump (heating circuit without mixer)
  • Page 65 Coding Code 2 (cont.) Coding in Function mode Coding Possible change the as change delivered Address: condition value Address: value 62:2 Circulation pump with 2 62:0 Circulation pump without minutes run-on time run-on 62:1 Run-on time adjustable from 1 to 15 minutes 62:15 63:0 Without auxiliary...
  • Page 66 Coding Code 2 (cont.) Coding in Function mode Coding Possible change the as change delivered Address: condition value Address: value 73:0 DHW circulation 73:1 During the time program pump: ON according to 1x/h ON for 5 minutes time program 73:6 up to 6x/h ON for 5 min- utes 73:7...
  • Page 67 Coding Code 2 (cont.) Coding in Function mode Coding Possible change the as change delivered Address: condition value Address: value 80:1 With 5 seconds' time 80:0 Without time delay delay for fault message; 80:2 Time delay adjustable message will be issued, from 10 to 995;...
  • Page 68 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...
  • Page 69 Coding Code 2 (cont.) Coding in Function mode Coding Possible change the as change delivered Address: condition value Address: value A2:2 With DHW cylinder A2:0 Without DHW cylinder priority applicable to priority applicable to heating circuit pump heating circuit pump and and mixer mixer A2:1...
  • Page 70 Coding Code 2 (cont.) Parameters Heating circuit pump Address A3:... ON at OFF at -10 °C -8 °C -9 °C -7 °C -8 °C -6 °C -7 °C -5 °C -6 °C -4 °C -5 °C -3 °C -4 °C -2 °C -3 °C -1 °C...
  • Page 71 Coding Code 2 (cont.) Coding in Function mode Coding Possible change the as change delivered Address: condition value Address: value 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...
  • Page 72 Coding Code 2 (cont.) Coding in Function mode Coding Possible change the as change delivered Address: condition value Address: value Boiler circuit, mixer circuit A6:36 Extended economy A6:5 Extended economy cir- circuit inactive cuit enabled, i.e. the bur- A6:35 ner and heating circuit pump will be switched OFF, and the mixer will be closed at a variable...
  • Page 73 Coding Code 2 (cont.) Coding in Function mode Coding Possible change the as change delivered Address: condition value Address: value A8:1 Heating circuit M2 A8:0 Heating circuit M2 (mixer (mixer circuit) creates a circuit) creates no demand for the internal demand for the internal circulation pump circulation pump...
  • Page 74 Coding Code 2 (cont.) Coding in Function mode Coding Possible change the as change delivered Address: condition value Address: value b5:0 With remote control: b5:1 Heating circuit pump Without room tempera- logic function - see the ture-dependent heating b5:8 following table circuit pump logic func- tion Parameter...
  • Page 75 Coding Code 2 (cont.) Coding in Function mode Coding Possible change the as change delivered Address: condition value Address: value d3:35 (see page 33) d4:0 Heating curve level = d4:–13 Heating curve level adjustable from –13 to 40 d4:40 (see page 33) d5:0 The external operat- d5:1...
  • Page 76 Coding Code 2 (cont.) Coding in Function mode Coding Possible change the as change delivered Address: condition value Address: value E9:45 Speed of the variable E9:0 Speed adjustable from 0 speed pump = 45 % of to 100 % of max. speed max.
  • Page 77 Coding Code 2 (cont.) Coding in Function mode Coding Possible change the as change delivered Address: condition value Address: value screed-drying function has been completed or if the address is manually set to 0. F1:6 Constant flow tempera- ture 20 °C F1:15 F2:8 Time limit for party...

  • Page 78: Resetting The Coding To The Delivered Condition

    Coding Code 2 (cont.) Coding in Function mode Coding Possible change the as change delivered Address: condition value Address: value F7:24 will be started 1 to 24 times per day for 10 minutes respectively F7:25 In "Standby mode", the internal circulation pump is permanently ON Resetting the coding to the delivered condition 1.

  • Page 79: 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 80: Temperatures, Boiler Coding Card And Brief Scans

    Service scans Temperatures, boiler coding card and brief scans Weather-compensated control units 1. For two heating circuits – select 2. Press K and G simultaneously heating circuit: for approx. 2 seconds. Press a. & 3. Select the required scan with a 1r flashes on the display.
  • Page 81 Service scans Temperatures, boiler coding card and brief scans (cont.) Display screen Brief scan Boiler coding card Software version Version Version Control unit Boiler (EEPROM) Burner control unit (EEPROM) System design 1 to Display Max. demand temperature KM BUS indication in accor- users dance with the rele- vant design...
  • Page 82 Service scans Temperatures, boiler coding card and brief scans (cont.) Display screen Brief scan Heating circuit 1 Heating circuit 2 (boiler circuit A1) (mixer circuit M2) Remote Software Remote Software control version control version 0: excl. Remote 0: excl. Remote 1: Vito- control 1: Vito-...
  • Page 83 Service scans Temperatures, boiler coding card and brief scans (cont.) Display screen Brief scan System Software version Software design, Control unit version indication User inter- in accor- face dance with the design Software Software version Software Software version Burner control unit version version Solar...

  • Page 84: Checking Outputs (Relay Test)

    Service scans Temperatures, boiler coding card and brief scans (cont.) Display screen Brief scan Variable Software speed version pump Variable 0: excl. speed pump 1: Wilo 2: Grund- Checking outputs (relay test) Weather-compensated control units 1. Press K and d simultaneously 2.
  • Page 85 Service scans Checking outputs (relay test) (cont.) Display Description Solar pump ON Vitosolic Constant temperature control units 1. Press K and d simultaneously 2. Select the relay outputs with a and b. for approx. 2 seconds. Relay test enabled. 3. Press d. Relay test enabled.

  • Page 86: Scanning Operating Conditions And Sensors

    Service scans Scanning operating conditions and sensors Weather-compensated control units 2. Press c. 1. Select a heating circuit: Press a. & 1r flashes on the display. 3. Select the required operating con- dition scan with a or b. & Select heating circuit A1 (heating circuit without mixer): Press d.
  • Page 87 Service scans Scanning operating conditions and sensors (cont.) Operating condition display Description (subject to system equip- ment level) Burner OFF or ON Int. pump OFF or ON Output 20 Int. output OFF or ON Internal extension Heating pump OFF or ON External extension or extension kit for one heat- ing circuit with mixer installed Cylinder loading pump OFF...
  • Page 88 Service scans Scanning operating conditions and sensors (cont.) Operating condition display (sub- Description ject to system equipment level) 263572 Burner hours run 030529 Burner starts 001417 Hours run - solar circuit pump 002850 Solar energy in kW/h...

  • Page 89: Troubleshooting

    Troubleshooting Calling up fault code history The most recent 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 10th from most...
  • Page 90 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 91: 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 92 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 93 Troubleshooting Checking and acknowledging faults (cont.) Displayed Const. Weat- System Cause Remedy fault code her- character- comp. istics Burner Boiler temperature Check the blocked sensor shorted out boiler tem- perature sen- sor (see page 87) Boiler temperature sensor lead break Mixer Heating circuit M2 Check the...
  • Page 94 Troubleshooting Checking and acknowledging faults (cont.) Displayed Const. Weat- System Cause Remedy fault code her- character- comp. istics Control Solar: Cylinder Check sensor mode temperature sensor shorted out Cylinder tempera- ture sensor lead break Control Solar control unit See solar mode fault message control unit...
  • Page 95 Troubleshooting Checking and acknowledging faults (cont.) Displayed Const. Weat- System Cause Remedy fault code her- character- comp. istics Mixer M2 Communication Check the continues fault - extension kit extension kit to regulate for mixer circuit M2 connections and coding. Start the extension kit.
  • Page 96 Troubleshooting Checking and acknowledging faults (cont.) Displayed Const. Weat- System Cause Remedy fault code her- character- comp. istics Control Communication Check coding mode, fault - variable address E5 max. pump speed heating cir- settings; speed cuit pump, heating check the circuit M2 heating cir- cuit pump...
  • Page 97 Troubleshooting Checking and acknowledging faults (cont.) Displayed Const. Weat- System Cause Remedy fault code her- character- 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 room tem-...
  • Page 98 Troubleshooting Checking and acknowledging faults (cont.) Displayed Const. Weat- System Cause Remedy fault code her- character- comp. istics Burner in Flue gas tempera- Check the fault state ture limiter has heating sys- responded tem water level. Vent the heating system. Press reset E no sooner than after...
  • Page 99 Troubleshooting Checking and acknowledging faults (cont.) Displayed Const. Weat- System Cause Remedy fault code her- character- 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 the gas com-...
  • Page 100 Troubleshooting Checking and acknowledging faults (cont.) Displayed Const. Weat- System Cause Remedy fault code her- character- comp. istics Burner in Fan speed too high Check the fault state at burner start fan, check the fan cables, check the fan control. Press E.

  • Page 101: Repairs

    Troubleshooting Checking and acknowledging faults (cont.) Displayed Const. Weat- System Cause Remedy fault code her- character- 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 102 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 103 Troubleshooting Repairs (cont.) Check the boiler temperature sensor, cylinder temperature sensor or the flow temperature sensor for 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 104 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 105 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 106 Troubleshooting Repairs (cont.) Checking the thermocouple 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 from thermocouple A. & Check the continuity of the thermo- couple with a multimeter.
  • Page 107 Troubleshooting Repairs (cont.) 1. Pull off the electrical plug A. Checking O-rings: 2. Remove sensor B by pulling it upwards. 3. Ensure that both O-rings C are properly inserted into aperture adaptor retainers D. 4. Insert the sensor with connection nipples into the gas combination valve adaptor and push in until it clicks into place.
  • Page 108 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 109 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 110 Troubleshooting Repairs (cont.) Checking Vitotronic 050 (accessory) Vitotronic 050 is connected with the control unit via the LON system. To test the connection, implement a user check on the boiler control unit (see page 32).

  • Page 111: Function Description

    Function description Constant temperature control units Heating mode DHW heating The set boiler water temperature will The DHW heating will be activated if be maintained in the "central heating the cylinder temperature falls 2.5 K and DHW heating" G program, below the set cylinder temperature.

  • Page 112: Weather-Compensated Control Units

    Function description Weather-compensated control units Heating mode DHW heating The control unit determines a set boi- The DHW heating will be activated if ler water temperature subject to out- the cylinder temperature falls 2.5 K side temperature or room temperature below the set cylinder temperature.
  • Page 113 Function description Weather-compensated control units (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 114: 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 115 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 116: 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 via this exten- (terminals 1 - 2) &...
  • Page 117 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 via this exten- (terminals 1 - 2) &...

  • Page 118: Control Functions

    Function description Control functions External operating mode changeover The "External operating mode chan- geover" function is connected via external extension input aVD. With coding address 91 you can select the heating circuit to which the change- over of operating mode should apply: Coding Changeover of operating mode affects: 91:0...
  • Page 119 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 signal "Ext. block- input aVD. ing" should have on the connected cir- culation pumps. External demand The "External demand"...
  • Page 120 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 pump will be started via coding address 2F:2. The burner shuts down if this function is activated via coding address 2F.
  • Page 121 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...
  • Page 122 Function description Control functions (cont.) Temperature profile: Factory-set code F1:6 to F1:15...

  • Page 123: Designs

    Designs Connection and wiring diagrams – internal connections Main PCB Cylinder temperature sensor § Boiler temperature sensor Ionisation electrode...
  • Page 124 Designs Connection and wiring diagrams – internal connectio . . . (cont.) Flue gas temperature sensor Ignition unit a-Ö Fan motor Flow switch aNF Differential pressure sensor Temperature limiter...

  • Page 125: Connection And Wiring Diagrams - External Connections

    Designs Connection and wiring diagrams – external connections Main PCB Mains supply unit...
  • Page 126 Designs Connection and wiring diagrams – external connectio . . . (cont.) sÖ Optolink Internal circulation pump Burner control unit (heating circuit pump or boiler Operating interface circuit pump) Coding card Circulation pump or central fault Connection adaptor message LON communication module Flow switch Internal extension H1 Gas solenoid valve...

  • Page 127: 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. 006 Burner (with item 007, 009 to 044 Pressure gauge and fem.

  • Page 128: Type Plate

    Parts lists Parts lists (cont.) 020 Set of small burner parts 075 Cable harness X8/X9 040 Touch-up spray paint, Vitowhite 076 Mains cable - motor electronics 041 Touch-up paint stick, Vitowhite 077 Connecting cable - motor 045 Special grease 078 Internal ionisation lead 051 Gasket set 079 Cable harness aux.
  • Page 129 Parts lists Parts lists (cont.)
  • Page 130 Parts lists Parts lists (cont.)
  • Page 131 Parts lists Parts lists (cont.)
  • Page 132 Parts lists Parts lists (cont.)
  • Page 133 Parts lists Parts lists (cont.)

  • Page 134: 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 135 Commissioning/service reports Commissioning/service reports (cont.) Maintenance/ser- Maintenance/ Maintenance/ Maintenance/ser- vice service service vice...
  • Page 136 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 137 Commissioning/service reports Commissioning/service reports (cont.) Maintenance/ser- Maintenance/ Maintenance/ Maintenance/ser- vice service service vice...
  • Page 138 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 139 Commissioning/service reports Commissioning/service reports (cont.) Maintenance/ser- Maintenance/ Maintenance/ Maintenance/ser- vice service service vice...

  • Page 140: Specification

    Specification Specification Rated voltage: 230 V~ Electronic tempera- 81 °C Rated frequency: 50 Hz ture limiter setting: Rated current : 6.3 A~ Temperature limiter 100 °C (fixed) Safety class: setting: Protection level: IP X 4 D to Mains fuse: max. 16 A EN 60529 Power consumption &...

  • Page 141: Certificates

    Certificates Declaration of conformity Declaration of conformity for Vitodens 300 We, Viessmann Werke GmbH & Co KG, D-35107 Allendorf, declare as sole responsible body, that the product Vitodens 300 conforms to the following stan- This product is designated in accor-...

  • Page 142: 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) [Germany]: Vitodens 300 Allendorf, 14.01.04 Viessmann Werk GmbH&Co KG...

  • Page 143: Keyword Index

    Keyword index Keyword index Adjusting the room temperature Fault history ........Fault messages 73, 75 .
  • Page 144 Keyword index Keyword index (cont.) Relay test Temperature scans ........
  • Page 148 7176 778 3 00001 7176 779 3 00001 LPG version LPG version from serial no. from serial no. 7176 780 3 00001 7176 781 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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