Viessmann Vitotwin 300-W Installation And Service Instructions For Contractors
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Viessmann Vitotwin 300-W Installation And Service Instructions For Contractors

Micro chp boiler based on stirling engine natural gas version
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VIESMANN
Installation and service
instructions
for contractors
Vitotwin 300-W
Type C3HA
Micro CHP boiler based on Stirling engine
Natural gas version
For applicability, see the last page
VITOTWIN 300-W
Please keep safe.
5618 294 GB
4/2012

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  • Page 1 VIESMANN Installation and service instructions for contractors Vitotwin 300-W Type C3HA Micro CHP boiler based on Stirling engine Natural gas version For applicability, see the last page VITOTWIN 300-W Please keep safe. 5618 294 GB 4/2012...
  • Page 2 Safety instructions Safety instructions Please follow these safety instructions closely to prevent accidents and mate- rial losses. Safety instructions explained ■ all current safety regulations as defined by DIN, EN, DVGW, TRGI, Danger TRF, VDE and all locally applicable This symbol warns against the standards, risk of injury.
  • Page 3 ■ When using gas as fuel, also close the For replacements, use only orig- main gas shut-off valve and safeguard inal spare parts from Viessmann against unauthorised reopening. or those which are approved by ■ Isolate the system from the power sup- Viessmann.

  • Page 4: Table Of Contents

    Index Index Installation instructions Preparing for installation Product information....................Preparing for installation..................Installation sequence Fitting the wall mounting bracket................36 Mounting the boiler....................38 Removing the front panel..................39 Removing the transport brackets................. 42 Filling the siphon with water................. 43 Flue outlet......................
  • Page 5 Index Index (cont.) Repairs......................... 138 Function description Boiler temperature control..................153 Cylinder temperature control................156 Heating circuit control................... 158 Designs Connection and wiring scheme................161 Parts lists Ordering parts...................... 165 Overview of the assemblies................. 166 Sheet metal parts assembly................. 167 Heat cell assembly....................

  • Page 6: Preparing For Installation

    The integral net electricity meter is approved to DIN VDE AR 4105. Destination countries As a general rule, the Vitotwin 300-W may only be supplied to those countries speci- fied on the type plate. For deliveries to alternative countries, an approved contractor must arrange individual approval on his own initiative and in accordance with the law of the country in question.
  • Page 7 Preparing for installation Preparing for installation (cont.) Information regarding system versions ■ The Vitotwin 300-W will be delivered with connection accessories for the relevant system version in accordance with the order. ■ Connect the DHW circulation pump on site (if applicable).
  • Page 8 Preparing for installation Preparing for installation (cont.) System version 1, ID: 4605451_1201_02 System with multi mode heating water buffer cylinder Hydraulic installation scheme --41/2-- --41/20-- --41/52-- WW/Z --2B/B3-- HV2/HR1 --2B/B4-- --2B/B42-- --2B/B41-- HVS/HRS WW/Z DHW/DHW circulation...
  • Page 9 Preparing for installation Preparing for installation (cont.) HV2/HR1 Heating water flow, Cold water Vitotwin 300-W Drain Heating water flow, heating HVS/HRS Heating water return, circuit Vitotwin 300-W Heating water return, heat- ing circuit Equipment required Pos. Designation Vitotwin 300 W...
  • Page 10 Plate heat exchanger for system separation Accessories (optional) Vitocom 100, type GSM Central fault message no pos. Wireless repeater for wireless remote control no pos. 230 V∼ extension Installation of the Vitotwin 300-W with the supplied installation aid: Installation aid installation instructions...
  • Page 11 Vitotwin 300-W A Air vent valve B DHW C Temperature sensor B3 D Heating water flow, Vitotwin 300-W E N/A F Heating water flow, heating circuit G Temperature sensor B4 H Temperature sensor B42...
  • Page 12 Preparing for installation Preparing for installation (cont.) Electrical installation scheme Junction box Vitotwin Low voltage X100 STS B3 230 V/50 Hz PTSO B4 VC 100 PTSU B41 PTSU B10/42 X200 WIRELESS 41 51 X301 X300 Control unit X207 X301 X300 Junction box Low voltage X207...
  • Page 13 Preparing for installation Preparing for installation (cont.) 41 HK M1 230 V/50 Hz VTS M1 51 HK M2 230 V/50 Hz VTS M2 61 HK M3 230 V/50 Hz VTS M3 Required codes Group Code Function "System scheme" "5700:1" System scheme 1 as standard function "HC1"...
  • Page 14 Preparing for installation Preparing for installation (cont.) System version 2, ID: 4605452_1201_02 System with heating water buffer cylinder and DHW cylinder Hydraulic installation scheme --41/2-- --41/20-- --41/52-- --2B/B4-- --2B/B42-- --2B/B3-- --2/QX3-- --2B/B41--...
  • Page 15 Preparing for installation Preparing for installation (cont.) Equipment required Pos. Designation Vitotwin 300 W with Weather-compensated control unit Junction box for sensors and accessories (low voltage) Remote control unit FBE Wireless base station FB Outside temperature sensor ATS Cylinder temperature sensor STS B3 Buffer temperature sensor PTSO B4, top Sensor for power demand function B41 Buffer temperature sensor PTSU B42, bottom...
  • Page 16 Plate heat exchanger for system separation Accessories (optional) Vitocom 100, type GSM Central fault message no pos. Wireless repeater for wireless remote control no pos. 230 V∼ extension Installation of the Vitotwin 300-W with the supplied sub-mounting kit: Sub-mounting kit installation instructions...
  • Page 17 Preparing for installation Preparing for installation (cont.) Electrical installation scheme Vitotwin Junction box Low voltage X100 230 V/50 Hz STS B3 PTSO B4 VC 100 PTSU B41 PTSU B10/42 X200 WIRELESS 41 51 X301 X300 Control unit X207 X301 X300 Junction box Low voltage X207...
  • Page 18 Preparing for installation Preparing for installation (cont.) 41 HK M1 230 V/50 Hz VTS M1 51 HK M2 230 V/50 Hz VTS M2 61 HK M3 230 V/50 Hz VTS M3 Required codes Group Code Function "System scheme" "5700:2" System scheme 2 as standard function "HC1"...
  • Page 19 Preparing for installation Preparing for installation (cont.) System version 3, ID: 4605498_1201_01 System with floorstanding oil/gas boiler, heating water buffer cylinder and DHW cylinder Hydraulic installation scheme --41/2-- --41/20-- --41/52-- --2B/B10-- --2A/QX2-- --2B/B4-- --11/5-- --2B/B3-- --2B/B41-- --2/QX3-- --17/DE1-- --2A/X5--...
  • Page 20 Preparing for installation Preparing for installation (cont.) Equipment required Pos. Designation Vitotwin 300 W with Weather-compensated control unit 230 V∼ extension Junction box for sensors and accessories (low voltage) Remote control unit FBE Wireless base station FB Outside temperature sensor ATS Cylinder temperature sensor STS B3 Buffer temperature sensor PTSO B4, top Buffer temperature sensor PTSU B41, bottom...
  • Page 21 External hook-up: (Requires extension EA1) ■ External blocking ■ External demand ■ External operating program changeover Radio clock receiver no pos. Wireless repeater for wireless remote control Installation of the Vitotwin 300-W with the supplied sub-mounting kit: Sub-mounting kit installation instructions...
  • Page 22 Preparing for installation Preparing for installation (cont.) Electrical installation scheme KO1B / KO2B 230 V/50 Hz 40 A Ö 0-10V X12 41 X5/1 X5/2 UPSB...
  • Page 23 Preparing for installation Preparing for installation (cont.) 41 HK M1 230 V/50 Hz VTS M1 51 HK M2 230 V/50 Hz VTS M2 61 HK M3 230 V/50 Hz VTS M3...
  • Page 24 Preparing for installation Preparing for installation (cont.) Vitotwin 2 A 230 V extension X100 230 V/50 Hz 230 V/50 Hz X200 230 V extension VC 100 EA1 / K1 X301 Control unit Junction box Low voltage X300 STS B3 PTSO B4 Junction box Low voltage PTSU B41...
  • Page 25 Preparing for installation Preparing for installation (cont.) Required codes Group Code Function Vitotwin 300-W coding addresses "Source type" "3750:oil/gas boiler" Oil/gas boiler (only for display pur- poses) "System scheme" "5700:3" System scheme 3 as standard function "HC1" "5710:On" Heating circuit 1 installed "HC2"...
  • Page 26 Preparing for installation Preparing for installation (cont.) System version 4, ID: 4605499_1201_01 System with solid fuel boiler, heating water buffer cylinders and DHW cylinder Hydraulic installation scheme --41/2-- --41/20-- --41/52-- --11/X3./5.6-- --31/S2-- --2B/B4-- --2B/B42-- --2B/B3-- --2/QX3-- --2B/B41-- Equipment required Pos. Designation Vitotwin 300 W with...
  • Page 27 Preparing for installation Preparing for installation (cont.) Pos. Designation 230 V∼ extension Junction box for sensors and accessories (low voltage) Remote control unit FBE Wireless base station FB Outside temperature sensor ATS Cylinder temperature sensor STS B3 Buffer temperature sensor PTSO B4, top Buffer temperature sensor PTSU B42, bottom Sensor for power demand function B41 Sub-mounting kit with 3/2-way valve...
  • Page 28 External hook-up: (requires extension EA1) ■ External blocking ■ External demand ■ External operating program changeover no pos. Radio clock receiver no pos. Wireless repeater for wireless remote control Installation of the Vitotwin 300-W with the supplied sub-mounting kit: Sub-mounting kit installation instructions...
  • Page 29 Preparing for installation Preparing for installation (cont.) Electrical installation scheme Vitotwin 2 A 230 V extension X100 230 V/50 Hz 230 V/50 Hz X200 VC 100 230 V extension SD1 / R1L SD1 / R1N X301 Control unit Junction box Low voltage X300 STS B3...
  • Page 30 Preparing for installation Preparing for installation (cont.) 41 HK M1 230 V/50 Hz VTS M1 51 HK M2 230 V/50 Hz VTS M2 61 HK M3 230 V/50 Hz VTS M3...
  • Page 31 Preparing for installation Preparing for installation (cont.) KKR FSK X1.5 N X1.6 230 V/ 50 Hz X1.7 L X3.6 N X2.4 X3.5 L PROG PROG1 X4.4 X4.3 X4.2 X4.1 230 V/ 50 Hz N 20 N 18 UV / R1 X5 / EX2...
  • Page 32 Preparing for installation Preparing for installation (cont.) Required codes Group Code Function "Source type" "3750:Solid fuel boil- Solid fuel boiler (only for display er" purposes) "System scheme" "5700:4" System scheme 4 as standard function "HC1" "5710:On" Heating circuit 1 installed "HC2"...
  • Page 33 Preparing for installation Preparing for installation (cont.) Dimensions Ø 100 Ø 60...
  • Page 34 Information on the power supply Note ■ The power supply for the Observe the requirements of Vitotwin 300-W must have sepa- DIN VDE 0100. rate MCB/fuse protection. Connect the power supply directly 1. Prepare the water connections. Flush from the distribution board as per the heating system.
  • Page 35 Preparing for installation Preparing for installation (cont.) MCB/fuse max. 16 A, 230 V, 50 Hz. The on-site cable to the building's main meter should have a resist- ance which is as low as possible. Therefore, observe the cable length and cross-section. Recommended cable cross-sec- tion: 3 x 2.5 mm...

  • Page 36: Installation Sequence

    Installation sequence Fitting the wall mounting bracket Depending on the system version, the Note wall mounting bracket is supplied with The supplied screws and rawl plugs are the sub-mounting kit or forms part of the suitable for concrete. installation aid. Use fixing materials for a weight of at least 130 kg in the case of other building materials.
  • Page 37 Installation sequence Fitting the wall mounting bracket (cont.) Installation with installation aid Installation aid installation instructions Installation with self-supporting mounting frame Self-supporting mounting frame installation instructions...

  • Page 38: Mounting The Boiler

    Installation sequence Mounting the boiler 1. Lift the Vitotwin 300-W with its lower 3. Align the Vitotwin 300-W vertically packing segment and suspend from and horizontally in all three axes. the wall mounting bracket. Note 2. Remove lower packing segment.

  • Page 39: Removing The Front Panel

    Installation sequence Removing the front panel...
  • Page 40 Installation sequence Removing the front panel (cont.) Aligning the boiler 1. Align the Vitotwin 300-W vertically and horizontally in all three axes. Note Take any additional measures required on site. 2. Place the supplied circular level on the Stirling engine plate and check levels.
  • Page 41 Installation sequence Removing the front panel (cont.) Pivoting the control unit forwards...

  • Page 42: Removing The Transport Brackets

    Installation sequence Removing the transport brackets...

  • Page 43: Filling The Siphon With Water

    Installation sequence Removing the transport brackets (cont.) Remove the transport brackets and store with the system for servicing work or subsequent transport operations. Filling the siphon with water Please note During commissioning, flue gas may escape from the condensate drain. Fill the siphon with water before commissioning.

  • Page 44: Flue Outlet

    Installation sequence Flue outlet Connect the balanced flue. Flue system installation instruc- tions. Condensate connection Connect condensate drain A and safety valve drain B with a constant fall and connect the pipe vent to the public sewer.

  • Page 45: Gas Connection

    Installation sequence Gas connection 1. Connect gas shut-off valve A. 2. Check the gas connections for tight- See page 66 for converting to other ness. gas types. Note For the tightness test, use only suita- ble and approved leak detecting agents (EN 14291) and devices.
  • Page 46 Installation sequence Gas connection (cont.) Please note 3. Vent the gas line. Excessive test pressure may damage the boiler and the gas valve. Max. test pressure 150 mbar. Where higher pressure is required for tightness tests, disconnect the boiler and the gas valves from the gas sup- ply pipe (undo the fitting).

  • Page 47: Opening The Control Unit Casing

    Installation sequence Opening the control unit casing Terminal connections Note See the connection and wiring diagram on page 161 for an overview and layout of terminals.
  • Page 48 Installation sequence Terminal connections (cont.) Connection of sensors and accessories The sensors and accessories are con- nected to the supplied junction box. Attach the junction box to the wall in an appropriate position. Cable length approx. 1.0 m.
  • Page 49 Installation sequence Terminal connections (cont.) Outside temperature sensor Installation: ■ North or north-westerly wall, 2 to 2.5 m above ground level; in multi storey buildings, in the upper half of the second floor ■ Not above windows, doors or vents ■...
  • Page 50 Installation sequence Terminal connections (cont.) Cylinder temperature sensors and buffer temperature sensors 1 2 3 4 ATS B42/ Funk Regelung A Cylinder temperature sensor B 3 D Buffer temperature sensor B 4 B Buffer temperature sensor B 42 E Junction box C Buffer temperature sensor B 41 See the applicable system scheme from page 8 onwards for use and layout of the...
  • Page 51 Installation sequence Terminal connections (cont.) Common flow sensor (flow temperature sensor, system scheme 1 2 3 4 ATS B42/ Funk Regelung A Common flow sensor (common flow B Junction box temperature sensor) See system version 3 on page 19 for use and layout of the common flow sensor.
  • Page 52 Installation sequence Terminal connections (cont.) 3-way diverter valve in sub-mounting kit Connection to the control unit See separate installation instruc- tions. 4 3 2 M 4 3 2 F 4 3 2 Z X200 A 3-way diverter valve B Plug on plug-in strip X200 in the control unit...
  • Page 53 Installation sequence Terminal connections (cont.) Heating circuit with mixer Note Never interchange wires. See separate installation instruc- 1 2 3 4 tions. A Extension kit for heating circuit with mixer B Junction box C Heating circuit 2 and 3 with mixer...
  • Page 54 Installation sequence Terminal connections (cont.) Wireless transmitter for remote control See separate installation instruc- tions. 1 2 3 4 B42/ Funk A Wireless transmitter B Connecting cable C Junction box...
  • Page 55 Installation sequence Terminal connections (cont.) Central fault message Connection QX1 in the control unit. Code 5890 must be shown at "Alarm output K10" (delivered condition). This is a 'live' connection. Vitocom 100 installation instruc- tions A Vitocom 100 Power supply Danger ■...
  • Page 56 Installation sequence Terminal connections (cont.) 1. Guide the power cable through the opening in the bottom panel and insert a diaphragm grommet in the opening.
  • Page 57 Installation sequence Terminal connections (cont.) 230 V/ 50 Hz X100 A ON/OFF switch in the control unit C AC meter B Internal circulation pump 2. Connect the power cable to an appli- ance junction box on site. Note Replace the main power meter with a bi- directional power meter.

  • Page 58: Mounting The Front Panel

    Installation sequence Terminal connections (cont.) Routing power cables Please note When routing and securing con- Connecting cables will be dam- necting cables on site, ensure aged if they touch hot compo- that the maximum permissible nents. temperatures for these cables are not exceeded.

  • Page 59: Commissioning, Inspection, Maintenance

    6. Checking all connections on the heating water side and DHW side for leaks • 7. Checking the power supply • 8. Switch on the Vitotwin 300-W........65 • 9. Enabling the Stirling burner.......... 65 • 10. Entering a fixed day............65 •...
  • Page 60 Commissioning, inspection, maintenance Steps - commissioning, inspection and… (cont.) Commissioning steps Inspection steps Maintenance steps Page • 21. Check the length of the Stirling engine damping springs................77 • • 22. Checking the neutralising system (if installed) • • • 23.

  • Page 61: Further Details Regarding The Individual Steps

    Commissioning, inspection, maintenance Further details regarding the individual steps Information regarding maintenance work Danger ■ Allow at least 7 min to elapse When working on electrical con- after switching off the appli- nections, injuries may occur as a ance before touching the result of electrical current if the capacitor terminals.

  • Page 62: Filling The Heating System

    ), e.g. using a small water sion and may lead to boiler dam- softening system for heating water age. (see Viessmann Vitoset price list). Note the following comments ■ Antifreeze suitable for heating sys- regarding fill water. tems can be added to the fill water.

  • Page 63: Venting The Boiler

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Venting the boiler...

  • Page 64: Venting The Heating System

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) 1. Close shut-off valves A and B on 4. Close valves C and D, open shut- the heating water side (lever to the off valves A and B on the heating right).

  • Page 65: Switch On The Vitotwin 300-W

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Switch on the Vitotwin 300-W Please note The transport bracket must be To avoid equipment damage: removed. Enabling the Stirling burner Information on commissioning The power generating part of the system...

  • Page 66: Converting The Gas Type

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Wobbe index ranges Gas type Wobbe index range kWh/m MJ/m Delivered condition Natural gas E 12.0 to 16.1 43.2 to 58.0 Natural gas LL 10.0 to 13.1 36.0 to 47.2 Converting the gas type Replace the gas restrictors on both burn- ers.
  • Page 67 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) E 4x 1. Undo union nuts and remove gas 4. Check the CO or O content for both pipes A and B. burners (see page 79). 2. Remove gas restrictor for auxiliary Danger burner C and that of the Stirling Escaping gas leads to a risk of...

  • Page 68: Measuring The Static Pressure And Supply Pressure

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Measuring the static pressure and supply pressure Danger A CO test must be performed CO build-up as a result of incor- before and after work on gas rect burner adjustment can have appliances.

  • Page 69: Checking The Balanced Flue System For Tightness (Annular Gap Check)

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) 6. Check the supply (flow) pressure. Danger Set value: 20 mbar. Gas escaping from the test nipple leads to a risk of explo- Note sion. Use a suitable measuring device with Check for gas tightness.

  • Page 70: Auxiliary Burner Removal

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) For balanced flue systems tested The flue pipe is deemed to be gas-tight together with the wall mounted gas fired if the CO concentration in the combus- boiler, the requirement for a tightness tion air is no higher than 0.2 % or the test during commissioning by the flue concentration is at least 20.6 %.

  • Page 71: Checking The Burner Gasket And Burner Gauze Assembly

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) 1. Switch OFF the main power supply 5. Undo the union nut on gas/air duct and the ON/OFF switch at the control unit. 6. Undo four screws from the burner 2.
  • Page 72 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) 1. Remove electrodes B. 4. Insert new burner gauze assembly E with new gasket F and secure. 2. Undo three retaining clips C on ther- Torque: 3.5 Nm. mal insulation ring D and then 5.

  • Page 73: Checking The Ignition And Ionisation Electrode For Auxiliary Burner

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Checking the ignition and ionisation electrode for auxiliary burner 10,5 ±1 A Ignition electrodes B Ionisation electrode 1. Check the electrodes for wear and 3. Check the electrode gaps. If the gaps contamination.
  • Page 74 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) A Ignition electrodes B Ionisation electrode 1. Pull the cables from the electrodes. 5. If the electrodes are damaged, replace the electrodes with the gas- 2. Release the nuts and remove the ket.

  • Page 75: Cleaning The Heating Surfaces And Fitting The Burner

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Cleaning the heating surfaces and fitting the burner Please note Never use brushes to clean the Scratches on parts that are in heating surface. contact with flue gas can lead to corrosion.
  • Page 76 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) 03. Use a vacuum cleaner to remove 08. Install the burner and tighten the residues from heating surface B screws diagonally with 8.5 Nm. inside the combustion chamber. 09. Fit the gas/air duct with a new gas- ket.

  • Page 77: Siphon

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Checking the condensate drain and cleaning the siphon 1. Check at the siphon that the conden- 3. Fill siphon A with water via the inlet sate can drain freely. port and reinstall. 2.

  • Page 78: Checking The Neutralising System (If Installed) 23. Checking The Diaphragm Expansion Vessel And System Pressure

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) If necessary, change the length by turn- ing the upper nuts on the four retaining rods. Checking the diaphragm expansion vessel and system pressure Check the diaphragm expansion vessel pre-charge pressure (on site) and top up if required.

  • Page 79: 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 pressure Danger Note Escaping gas leads to a risk of For the tightness test, use only suitable explosion. and approved leak detecting agents Check all gas equipment for tight- (EN 14291) and devices.
  • Page 80 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) 4. Check the CO content. Should the actual value deviate from the above ranges, implement steps from page 5. Record the actual value on page 184 of the commissioning/ service report. 6.

  • Page 81: Matching The Control Unit To The Heating System

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Matching the control unit to the heating system Note 6. Confirm with "OK". The control unit must be adjusted subject to the system equipment level. 7. Turn rotary selector until the required See the relevant system version for the parameter is indicated.
  • Page 82 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) 2,75 2,25 Slope 1,75 1,25 0,75 0,25 Outside temperature in °C Heating curve settings Outside temperature in °C Adjust the heating curve separately for each heating circuit.

  • Page 83: Adjusting Screed Drying

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Function (code) Code Setting Deliv- range ered con- dition Heat- Heat- Heat- cir- cir- cir- cuit 1 cuit 2 cuit 3 "Heating curve slope" A (incli- 1020 1320 0.10 - 4.00 1.40 nation) "Heating curve displacement"...

  • Page 84: Instructing The System User

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Setting Meaning/effect "Functional/ Passes through the first and second parts of temperature profiles curing heat- A and B ing" "Manually" Constant flow temperature with value C "Floor curing setp man- ually"...

  • Page 85: Codes

    Codes Calling up codes 1. Press "OK" to access the menu. 4. Confirm the selected control level The display shows "Time of day and with "OK". date". All codes which are identified as "E" 5. Turn rotary selector "G" until the (end user level) can be amended on required function range is indicated.

  • Page 86: Changing Codes

    Codes Changing codes "Time of day and date" Function Code Operat- Setting options Delivered ing level condition "Time" "E" 00:00 to 23:59 – "Date" "E" 01/01 to 31/12 – "Year" "E" 2004 to 2099 – "Start of summertime" "F2" 01/01 to 31/12 25.03 "End of summertime"...
  • Page 87 Codes Changing codes (cont.) Function Code Operat- Setting options Delivered ing level condition "Direct adjustment" "F1" ■ "Automatic "Storage ■ Automatically save: A storage" with confir- code change (via the ro- ■ "Storage with mation" tary selector) is accep- confirmation" ted both by pressing "OK", and without con- firming (time out).
  • Page 88 Codes Changing codes (cont.) Function Code Operat- Setting options Delivered ing level condition "Operation HC3/P" "F1" ■ "Jointly with "Jointly with HC1" HC1" ■ "Independent- ly" "Room temperature de- "F1" ■ "Heating cir- "For all as- vice 1" cuit 1 only" signed HCs"...
  • Page 89 Codes Changing codes (cont.) Function Code Operat- Setting options Delivered ing level condition "Repeater" "F1" "Delete de- vice?" ■ "Yes" ■ "No" "Operator unit 1" "F1" "Delete de- vice?" ■ "Yes" ■ "No" "Operator unit 2" "F1" "Delete de- vice?" ■...
  • Page 90 Codes Changing codes (cont.) Function Code Operat- Setting options Delivered ing level condition "3rd phase off" "E" 00:00 to 24:00 h - -:- - "Standard values" (All "E" ■ "No" "No" time phases in the time ■ "Yes" program for heating circuit 1 are reset to their factory settings) "Time prog heating circuit 2"...
  • Page 91 Codes Changing codes (cont.) Function Code Operat- Setting options Delivered ing level condition "1st phase off" "E" 00:00 to 24:00 h 22:00 "2nd phase on" "E" 00:00 to 24:00 h - -:- - "2nd phase off" "E" 00:00 to 24:00 h - -:- - "3rd phase on"...
  • Page 92 Codes Changing codes (cont.) "Time program 5" (power demand function/external demand) Function Code Operat- Setting options Delivered ing level condition "Preselection" "E" ■ "Mo - Su" "Mo - Su" ■ "Mo - Fr" ■ "Sa - Su" ■ "Every week- day individu- ally"...
  • Page 93 Codes Changing codes (cont.) "Holiday program heating circuit 2" Function Code Operat- Setting options Delivered ing level condition "Holiday period HC2": "E" 01/01 to 31/12 - -.- - "Start" (Day 1) "Holiday period HC2": "E" 01/01 to 31/12 - -.- - "End"...
  • Page 94 Codes Changing codes (cont.) Function Code Operat- Setting options Delivered ing level condition "Flow temp setpoint "F2" 8 to 95 °C min" "Flow temp setpoint "F2" 8 to 95 °C max" "Room temperature in- "F2" - - -/0 to 100 % fluencing factor"...
  • Page 95 Codes Changing codes (cont.) Function Code Operat- Setting options Delivered ing level condition "End - room temp - re- "F2" -30 to 10 °C duced setpoint - in- crease" "Frost prot plant HC "F2" ■ "Off" "On" pump" ■ "On" "Mixer setpoint boost"...
  • Page 96 Codes Changing codes (cont.) Function Code Operat- Setting options Delivered ing level condition "Heating circuit 1 with "F2" ■ "No" "Yes" prim contr/system ■ "Yes" pump" Connecting line to the heating circuit with/without upstream control equip- ment or feed pump. "Optg mode change- "F2"...
  • Page 97 Codes Changing codes (cont.) Function Code Operat- Setting options Delivered ing level condition "Type room controller" 1059 "F2" ■ "Manually" "Radiator (see page 160) ■ "Radiator medium" fast" ■ "Radiator me- dium" ■ "Radiator slow" ■ "Floor heat fast" ■ "Floor heat medium"...
  • Page 98 Codes Changing codes (cont.) Function Code Operat- Setting options Delivered ing level condition "Screed drying func- 1150 "F2" ■ "Off" "Off" tion" (see page 83) ■ "Functional heating" ■ "Curing heat- ing" ■ "Functional + curing heat- ing" ■ "Curing + functional heating"...
  • Page 99 Codes Changing codes (cont.) "Heating circuit 3" Function Code Operat- Setting options Delivered ing level condition "Room temperature 1310 "E" 6 to 35 °C 20.0 comfort setpoint" "Room temperature re- 1312 "E" 6 to 35 °C 14.0 duced setpoint" "Room temperature frost 1314 "E"...
  • Page 100 Codes Changing codes (cont.) Function Code Operat- Setting options Delivered ing level condition "Quick setback" (setback 1380 "F2" ■ "Off" "Down to re- mode) ■ "Down to re- duced set- duced set- point" point" ■ "Down to frost prot setpoint" "Opt start max opt ener- 1389 "F2"...
  • Page 101 Codes Changing codes (cont.) Function Code Operat- Setting options Delivered ing level condition "Flow temp setpoint 1455 "F2" 0 to 95 °C screed drying" "Screed drying day" 1456 "F2" 0 to 32 days "Floor curing days com- 1457 "F2" 0 to 32 days pleted"...
  • Page 102 Codes Changing codes (cont.) Function Code Operat- Setting options Delivered ing level condition "DHW charging priority" 1630 "F2" ■ "Absolute" "Shifting" (see page 156) ■ "Shifting" ■ "None (paral- lel)" "Auxiliary function for 1640 "F2" ■ "Off" "Off" DHW heating" (see ■...
  • Page 103 Codes Changing codes (cont.) Function Code Operat- Setting options Delivered ing level condition "Circulating pump re- 1660 "F2" ■ "Time pro- "DHW re- lease" gram 3/HCP" lease" ■ "DHW re- lease" ■ "Time pro- gram 4/DHW" "Circulating pump cy- 1661 "F2"...
  • Page 104 Codes Changing codes (cont.) Function Code Operat- Setting options Delivered ing level condition "Consumer circuit 2 with 1928 "F2" ■ "No" "Yes" buffer" ■ "Yes" "Consumer circuit 2 with 1930 "F2" ■ "No" "Yes" prim contr/system ■ "Yes" pump" "Boiler" Function Code Operat-...
  • Page 105 Codes Changing codes (cont.) "Burner sequence" Function Code Operat- Setting options Delivered ing level condition "Locking time min supp 3201 "F2" 0 to 40 min bu" (see page 156) "Advanced enable supp 3203 "F2" 0 to 100 % bu DHW" (see page 156) "Rel time min mod supp 3208 "F2"...
  • Page 106 Codes Changing codes (cont.) Function Code Operat- Setting options Delivered ing level condition "With Economy mode" 3702 "F2" ■ "Off" "Off" ■ "On DHW" ■ "On" "Switching diff off" 3722 "F2" 0 to 20 °C "Locking time" 3723 "F2" 0 to 120 min - - - "Source type"...
  • Page 107 Codes Changing codes (cont.) "Configuration" Function Code Operat- Setting options Delivered ing level condition "System scheme" (see 5700 "F1" - - -: no scheme - - - page 8) System ver- sion 1 System ver- sion 2 System ver- sion 3 System ver- sion 4 No function...
  • Page 108 Codes Changing codes (cont.) Function Code Operat- Setting options Delivered ing level condition "Relay output QX2" 5891 "F2" ■ "None" "None" ■ "Alarm output K10" (see page 55) ■ "Circulating pump Q4" ■ "Heat request K27" (see page 155) ■ "DHW ctrl el- em Q3"...
  • Page 109 Codes Changing codes (cont.) Function Code Operat- Setting options Delivered ing level condition "Relay output QX4" 5894 "F2" ■ "None" "None" ■ "Alarm output K10" (see page 55) ■ "Circulating pump Q4" ■ "Heat request K27" (see page 155) ■ "DHW ctrl el- em Q3"...
  • Page 110 Codes Changing codes (cont.) Function Code Operat- Setting options Delivered ing level condition "Cont type input EX2" 5983 "F2" ■ "NC" "NO" ■ NC: Contact closed, ■ "NO" must be opened to acti- vate ■ NO: Contact open, must be closed to activate "Readjustm outside sen- 6100 "F2"...
  • Page 111 Codes Changing codes (cont.) Function Code Operat- Setting options Delivered ing level condition "Reset to default param- 6205 "F2" ■ "No" "No" eters" ■ "Yes" If "Yes" is set, the current parameter settings are re- set to the factory settings or the settings saved under code 6204.

  • Page 112: Service Scans

    Service scans Calling up service scans Calling up service scans, see page 85. Fault messages and fault history Faults "Fault messages" Function Code Operat- Setting options Delivered ing level condition "Reset alarm relay" 6710 "F2" ■ "Yes?" ■ "No?" "Fault history" Faults Code Operating...

  • Page 113: Relay Test

    Service scans Status (operating states) (cont.) Function Code Operating lev- "State buffer" 8010 "F2" "State engine burner" 8012 "F2" "State suppl. burner" 8013 "F2" "State generator" 8014 "F2" "Lockout reason eng bu" (cause of lockout) 8015 "F2" "Lockout reason supp bu" (cause of lockout) 8016 "F2"...

  • Page 114: Input/Output Test

    Service scans Relay test (cont.) Function Code Oper- Setting/function ating level "Relay 7700 "F2" "No test" test" "Everything off" "Relay output QX1" (central fault message facili- "Relay output QX2" "Relay output QX3" (diverter valve) "Relay output QX4" "Relay output QX21" mixer extension 1 "Relay output QX22"...

  • Page 115: Service/Special Operation (Service Functions)

    Service scans Input/output test (cont.) Function Code From/ To/switching Unit switching state state "Sensor temp BX6" (B42/ 7825 200.0 °C B10) "Sensor temp BX7" 7826 200.0 °C (temperature inside the appli- ance) "Sensor temp BX21" 7830 - 28.0 350.0 °C Heating circuit 1 flow tempera- ture "Sensor temp BX21"...

  • Page 116: Diagnostics

    Service scans Service/special operation (service functions) (cont.) Function Code Operating Setting options level "Burner output" 7131 "E" ■ "Eng burner min" ■ "Eng burner max" ■ "Supp burner min" ■ "Supp burner max" ■ "Eng + Supp bu min" ■ "Eng + Supp bu max"...
  • Page 117 Service scans Diagnostics (cont.) Function Code Operat- From/ To/switching Unit ing lev- switch- state ing state "Boiler return temp" 8314 "F2" °C "Pack temp" 8319 "F2" °C "Fan speed" 8323 "F2" 9000 "Eng burner hours run" 8341 "E" 65535 "Eng burner start coun- 8342 "F2"...
  • Page 118 Service scans Diagnostics (cont.) Function Code Operat- From/ To/switching Unit ing lev- switch- state ing state "State heating circuit 8730 "F2" "Off" "On" pump Q2" "State heat circ mix valve 8731 "F2" "Off" "On" 1 open" "State heat circ mix valve 8732 "F2"...
  • Page 119 Service scans Diagnostics (cont.) Function Code Operat- From/ To/switching Unit ing lev- switch- state ing state "State DHW pump Q3" 8820 "F2" "Off" "On" "State circulating pump 8822 "F2" "Off" "On" Q4" "DHW temperature actual 8830 "F2" 140.0 °C value" (B3) "DHW temperature set 8831 "F2"...
  • Page 120 Information on energy generated and used and on runtimes and intervals for various components are displayed under coding addresses 9104 to 9284. This information is only partially relevant for system operation. See the operating instructions for the Vitotwin 300-W for possible scans.

  • Page 121: Troubleshooting

    Troubleshooting Fault display Calling up fault messages Faults are indicated in the display by 2. Correct the fault. A restart follows means of symbols "Î" or "Ϊ". automatically. Î Fault with automatic reset after Fault with display "Ϊ" removal. Ϊ Fault with "User reset" (UR) by 1.

  • Page 122: Carry Out Service Reset

    Troubleshooting Carry out service reset 1. Pivot control unit forward. 2. Remove rear cover of the control unit. 3. Hold down reset button A for at least 5 s. Reset circuit breaker 1. Pivot control unit down and remove 3. Carry out service reset (see above). control unit cover A.

  • Page 123: Fault Messages

    Troubleshooting Fault messages Explanatory notes on resetting (see Press table below) Service reset (see page 122) Automatic restart after the fault NRP No restart possible, replace PCB has been remedied ARP Automatic restart after the fault has been remedied and mains voltage disconnected Fault mes- Cause...
  • Page 124 Troubleshooting Fault messages (cont.) Fault mes- Cause Remedy sage set- ting "83: BSB BUS connection short circuit Check BUS cable short cir- cuit" "84: BSB ad- Programming unit or con- Check remote control - heat- dress con- necting cable to program- ing circuit assignment.
  • Page 125 Troubleshooting Fault messages (cont.) Fault mes- Cause Remedy sage set- ting "121: Flow Set flow temperature for Check flow temperature sen- temp HC1" heating circuit 1 not reached sor and lead (see page 146). Check that the flow tempera- "122: Flow Set flow temperature for ture sensor is installed cor- temp HC2"...
  • Page 126 Troubleshooting Fault messages (cont.) Fault mes- Cause Remedy sage set- ting "164: Flow Flow sensor does not show Check installation and con- press switch any throughput. necting cable for flow sen- HC" sor. Check the system pressure. Vent the heating system. Check whether there is any throughput (code 8366 in di- agnostics heat generation)
  • Page 127 Troubleshooting Fault messages (cont.) Fault mes- Cause Remedy sage set- ting "260: Flow Short circuit or lead break to Check flow temperature sen- sensor 3" flow temperature sensor, sor (see page 146) heating circuit 3. "261: Loss After 5 attempts to start the Check the gas supply.
  • Page 128 Check temperature at bottom of Stirling engine: max. 100 °C. Check whether there is a min. flow rate of 240 l/h (code 8366 in diagnostics heat gen- eration). Notify Viessmann Technical Service. "281: Dyn Dynamic absorber overtravel Check plug-in connection absorber switch actuated.
  • Page 129 122). Check plug-in engine. connection X205, connecting cables and plugs to circuit breaker. Check cable harness. If the fault recurs, notify Viessmann Technical Serv- ice. "284: WCS The temperature of the Stir- Check balanced flue system: overtemp" ling engine is too high.
  • Page 130 Stirling generator. This must be at least 4 Ω. Observe safety instructions on page 61. If the fault recurs, notify Viessmann Technical Serv- ice. "286: Eng Head temperature on the Check spring length; adjust if head over- Stirling engine is too high.
  • Page 131 Troubleshooting Fault messages (cont.) Fault mes- Cause Remedy sage set- ting "287: Eng Head temperature on the Check spring length; adjust if head under- Stirling engine is too low. necessary (see page 77). temp" Check plug-in connection X205, connecting cables and plugs to thermocouples on the Stirling engine.
  • Page 132 Troubleshooting Fault messages (cont.) Fault mes- Cause Remedy sage set- ting "298: False The Eng burner ionisation Check the gas supply. Check flame Eng electrode has detected a gas type setting (see bu" faulty flame. page 66). Check electrodes (see "299: False The auxiliary burner ionisa- page 73).
  • Page 133 (see page 77). SW" Check electrical output (code 8200 in diagnostics engine). If the output < 500 W, notify Viessmann Technical Serv- ice. Check the temperature dif- ferential at the Stirling head thermocouples in steady- state condition (code 7764 and 7764 in input/output test).
  • Page 134 Stirling generator. This must be at least 4 Ω. Observe safety in- structions on page 61. If the fault recurs, notify Viessmann Technical Serv- ice. "308: Stop Stop resistor test failed. Check cables between the resistor in- control unit and the resis- tegrity"...
  • Page 135 Troubleshooting Fault messages (cont.) Fault mes- Cause Remedy sage set- ting "319: Check A fault is displayed after a Reconfigure system. configura- firmware update to indicate Check code 5700 tion" that the system configuration (Page 107), reset if necessa- needs to be adjusted. Check whether all connected components (temperature sensors, mixer extensions,...
  • Page 136 Troubleshooting Fault messages (cont.) Fault mes- Cause Remedy sage set- ting "396: Eng Deviation in actual thermo- Check spring length; adjust if AR (5 head t'c' couple values. necessary (see page 77). cont integ" Check plug-in connection X205 and thermocouple con- "397: Eng necting cables.
  • Page 137 Troubleshooting Fault messages (cont.) Fault mes- Cause Remedy sage set- ting "422: State Faulty communication be- Check the cable to the gas BUC Eng bu tween Stirling burner and valve and replace gas valve incon" control unit. if necessary. If the fault has not been rectified, replace "423: State Faulty communication be-...

  • Page 138: Repairs

    Troubleshooting Repairs Replace control unit PCB To reclaim fuel tax Calculating the amount of heat delivered for heating: Before replacing the control unit PCB, Subtract the "Heat delivered heating calculate the gas used by the Stirling from fixed day 1" (code 9105 on the burner since the last fixed day.
  • Page 139 Troubleshooting Repairs (cont.) Checking the outside temperature sensor -20 -10 10 20 30 Temperature in °C Sensor type: NTC 10 kΩ 1 2 3 4 ATS B42/ 1. Pull plug "2K" from the control unit. 2. Test the resistance of the outside temperature sensor at the disconnec- ted plug and compare it with the curve.
  • Page 140 Troubleshooting Repairs (cont.) Checking cylinder temperature sensors and buffer temperature sensors 1 2 3 4 ATS B42/ Funk Regelung A Cylinder temperature sensor B3 B Buffer temperature sensor B42 or common flow sensor B10 (common flow tem- perature sensor) C Buffer temperature sensor B41 D Buffer temperature sensor B4 E Junction box 1.
  • Page 141 Troubleshooting Repairs (cont.) 2. Test the resistance of the sensor at the disconnected plug and compare it with the curve. 3. Replace the sensor in the case of severe deviation. 10 30 50 70 90 110 Temperature in °C Sensor type: NTC 10 kΩ Checking boiler water temperature sensor...
  • Page 142 Troubleshooting Repairs (cont.) 1. Pull the leads from boiler water tem- perature sensor A and check the resistance. 2. Check the sensor resistance and compare it with the curve. 3. Replace the sensor in the case of severe deviation. Danger The sensor is immersed in the heating water (risk of scald- ing).
  • Page 143 Troubleshooting Repairs (cont.) Checking return temperature sensor 1. Pull the leads from return tempera- ture sensor B and check the resist- ance.
  • Page 144 Troubleshooting Repairs (cont.) 2. Check the sensor resistance and compare it with the curve. 3. Replace the sensor in the case of severe deviation. Danger The sensor is immersed in the heating water (risk of scald- ing). Drain the boiler before replac- 10 30 50 70 90 110 ing the sensor.
  • Page 145 Troubleshooting Repairs (cont.) Checking internal appliance temperature sensor...
  • Page 146 Troubleshooting Repairs (cont.) 1. Pull the leads from internal appliance temperature sensor A and check the resistance. 2. Check the sensor resistance and compare it with the curve. 3. Replace the sensor in the case of severe deviation. 10 30 50 70 90 110 Temperature in °C Sensor type: NTC 10 kΩ...
  • Page 147 Troubleshooting Repairs (cont.) 2. Test the resistance of the flow tem- perature sensor at the disconnected plug and compare it with the curve. 3. Where actual values deviate severely from the curve values, disconnect the wires at the sensor and repeat test on the sensor itself.
  • Page 148 Troubleshooting Repairs (cont.) Checking the temperature limiter If the burner control unit cannot be reset after a fault shutdown even though the boiler water temperature is below approx. 75 °C, check the following: 1. Pull the cables from thermal circuit 3.
  • Page 149 Troubleshooting Repairs (cont.) Replacing the thermocouples 1. Fit transport brackets to the Stirling 2. Mark new thermocouple A 120 mm engine to prevent damage during away from its tip. replacement (see page 42).
  • Page 150 Troubleshooting Repairs (cont.) 3. Remove plug C from thermocouple 5. Remove the transport brackets again. A, undo locking screw B and remove thermocouple. 4. Insert new thermocouple A right up to the mark on the sleeve, tighten locking screw B and insert plug...
  • Page 151 Troubleshooting Repairs (cont.) Checking and replacing resistors...
  • Page 152 Troubleshooting Repairs (cont.) 1. Allow the Stirling engine to cool down 5. Undo screws and remove faulty until the head temperature is resistor B or C, then fit new resis- ≤ 50 °C. tor. 2. Remove plug A and check the 6.

  • Page 153: Function Description

    Function description Boiler temperature control A set value for the boiler water tempera- The boiler water temperature is limited ture is established by the control unit as by the electronic temperature controller a function of the following parameters: (85 °C, can be adjusted in code 2212) ■...
  • Page 154 Function description Boiler temperature control (cont.) Start optimisation To ensure that sufficient heat is available The start time for the auxiliary burner can at the start of operation with standard be selected in codes 790, 1090 and 1390 room temperature, the Stirling burner (delivered condition 0 min).
  • Page 155 It is enabled via terminal (common flow sensor B10) falls below QX4 on Vitotwin 300-W at the external the set flow temperature by hook-up for the boiler and heating circuit the"Switching diff on", the diverter control unit.

  • Page 156: Cylinder Temperature Control

    Function description Boiler temperature control (cont.) The Vitotwin 300-W auxiliary burner remains blocked as long as there is an adequate flow temperature from the solid fuel boiler. Cylinder temperature control DHW heating begins when the cylinder ■ "First charg eng bu only"...
  • Page 157 Function description Cylinder temperature control (cont.) In "Locking time min supp bu" (codes The inertia with which the auxiliary 3201) it is possible to select how long the burner starts for DHW heating can be Stirling burner is permitted to operate amended with code 3203: The lower the after start-up in order to reach the set value, the slower it starts.

  • Page 158: Heating Circuit Control

    Function description Cylinder temperature control (cont.) Auxiliary DHW heating function When the auxiliary function for DHW Note heating is active (code 1640), the DHW Whilst the auxiliary function for DHW cylinder is heated up at preset times heating is active, there is a risk of scald- (codes 1641, 1642, 1644) to the set aux- ing in the vicinity of draw-off points.
  • Page 159 Function description Heating circuit control (cont.) Time programs For central heating, up to 3 changes per At the factory, time phase 1 is set for day between standard and reduced every day from 06:00 to 22:00 h, i.e. dur- room temperature can be programmed ing that time, rooms are heated to the (3 time phases).
  • Page 160 Function description Heating circuit control (cont.) Note A temperature limiter also needs to be used with underfloor heating systems. Frost protection If the outside temperature falls below +1.5 °C, a flow temperature of 3 to 35 °C is ensured. See coding addresses 714, 1014 and 1314 for conversion.

  • Page 161: Designs

    Designs Connection and wiring scheme A1 Control PCB B 3-way diverter valve A Connection to junction box for sen- sors and accessories (junction box see page 163)
  • Page 162 Designs Connection and wiring scheme (cont.) A2 Power supply unit E Internal circulation pump C Vitocom 100 (fault message) F Net electricity meter D Power supply...
  • Page 163 Designs Connection and wiring scheme (cont.) 230 V∼ extension Regelung (QX1) (QX2) EX1 EX2 (QX4) (QX1) Floating contact QX1 Relay output QX1 (QX2) Floating contact QX2 Relay output QX2 (QX4) Floating contact QX4 Relay output QX4 Function input EX1 fÖ Power supply Function input EX2...
  • Page 164 G Buffer temperature sensor B41 C Buffer temperature sensor B42 or common flow sensor B10 (common H Buffer temperature sensor B4 flow temperature sensor) K Vitotwin 300-W control unit D Wireless transmitter E Extension kit for heating circuit with mixer...

  • Page 165: Parts Lists

    Parts lists Ordering parts The following information is required: Standard parts are available from your ■ Serial no. (see type plate A) local supplier. ■ Assembly (from this parts list) ■ Position number of the individual part within the assembly (from this parts list)

  • Page 166: Overview Of The Assemblies

    Parts lists Overview of the assemblies A Type plate B Sheet metal parts assembly...

  • Page 167: Sheet Metal Parts Assembly

    ■ Air distribution valve ■ Gas:air route Sheet metal parts assembly 0001 Front panel 0013 Top panel sound insulation mat 0002 Viessmann logo 0014 Capacitor mounting bracket 0003 Vitotwin logo 0015 Hinged foot 0004 Front panel sound insulation mat 0016 RW sound insulation mat...
  • Page 168 Parts lists Sheet metal parts assembly (cont.) 0007 0022 0013 0017 0016 0012 0021 0021 0017 0022 0018 0022 0011 0014 0012 0020 0007 0005 0006 0010 0015 0015 0007 0022 0001 0005 0007 0009 0007 0008 0006 0009 0005 0010 0007 0004...

  • Page 169: Heat Cell Assembly

    Parts lists Heat cell assembly 0001 Heat exchanger 0009 Vitotwin condensate hose 0002 Matrix cylinder burner 0010 Siphon 0003 Air distribution valve 0011 Level switch 0004 Gas:air route 0012 Hose 19 x 230, corrugated 0005 Flue gas gasket 0013 Diaphragm grommet DG36/14 0006 Boiler flue connection 60/100 0014 Siphon retainer 0007 Boiler flue connection plug...
  • Page 170 Parts lists Heat cell assembly (cont.) 0008 0006 0007 0007 0008 0005 0015 0001 0002 0009 0003 0011 0010 0004 0013 0014 0012...

  • Page 171: Heat Exchanger Assembly

    Parts lists Heat exchanger assembly 0001 Heat exchanger 0008 O-ring 20.6 x 2.6 (set) 0002 Auxiliary heat exchanger flange 0009 Heating water return connection 0003 Stirling connection flange gasket elbow 0004 Separating plate 0010 Cheese head screw M4 x 12 0005 Thermal insulation block (5 pce) 0006 Heat exchanger mounting (set)

  • Page 172: Air Distribution Valve Assembly

    Parts lists Burner assembly (cont.) 0007 Ignition electrode block 0011 Blade terminal 0008 Ignition electrode gasket (5 pce) 0012 Burner door 0009 Ionisation electrode 0013 Seal ring 27 x 38 x 3 0010 Ionisation electrode gasket 0004 0002 0001 0001 0001 0001 0008...
  • Page 173 Parts lists Air distribution valve assembly (cont.) 0007 Geared motor 24 V AC 0.22 W 0008 Grub screw M5 x 10 0007 0008 0008 0001 0003 0005 0006 0005 0008 0002 0003 0003 0005 0004 0005...

  • Page 174: Gas:air Route Assembly

    Parts lists Gas:air route assembly 0001 Auxiliary burner gas supply pipe 0011 Gas valve VGU86S 0002 Seal ring 27 x 38 x 3 0012 Ignition transformer TQG42 0003 Gas:air mixture connection flange 0013 Gas line auxiliary burner 0004 O-ring 51.9 x 3.5 0014 Stirling burner gas supply line 0005 Mixer G3/4 0015 Gas connection manifold...
  • Page 175 Parts lists Gas:air route assembly (cont.) 0004 0005 0002 0004 0004 0007 0005 0004 0002 0003 0004 0007 0002 0004 0002 0008 0007 0007 0006 0007 0017 0007 0007 0001 0018 0007 0002 0007 0009 0010 0007 0007 0007 0007 0011 0007 0012...

  • Page 176: Stirling Unit Assembly

    Parts lists Stirling unit assembly 0001 Stirling engine 0017 Flue gas gasket 0002 Cooled plate 0018 Stirling thermal circuit breaker 0003 Omega seal 0019 Thermocouples 0004 Stirling spring 0020 Hose clip DN 25 0005 Rubber buffer 0021 Set of plug connector retainers 0006 Ring burner 0022 Heating water return profile hose 0007 Profile hose plate...
  • Page 177 Parts lists Stirling unit assembly (cont.) 0016 0017 0027 0006 0008 0017 0028 0029 0008 0005 0011 0005 0005 0011 0005 0010 0012 0011 0002 0011 0014 0014 0025 0014 0026 0014 0009 0020 0020 0021 0024 0015 0030 0023 0023 0019 0004...

  • Page 178: Hydraulic Assembly

    Parts lists Hydraulic assembly 0001 Auxiliary heat exchanger profile 0015 Temperature sensor hose 0016 Clip Ø 18 (5 pce) 0002 Hose 10 x 1.5 x 1500 0017 Safety valve 3 bar 0003 Hose clip DN 25 0018 Connecting pipe 0004 Auxiliary heat exchanger connec- 0019 Circulation pump motor tion pipe UPM2 15-70 PWM...
  • Page 179 Parts lists Hydraulic assembly (cont.) 0026 0003 0005 0002 0028 0004 0027 0026 0015 0027 0011 0028 0006 0007 0026 0001 0029 0011 0010 0029 0003 0029 0003 0022 0018 0021 0009 0008 0021 0020 0030 0024 0023 0019 0020 0025 0025 0015...

  • Page 180: Control Unit Assembly

    Parts lists Control unit assembly 0001 Vitotwin control unit casing 0029 Cable harness X205 X204 0002 Vitotwin PCB RVC 32 0030 Stirling burner ionisation cable 0003 Slider, left 0031 Meter input power cable 0004 Slider, right 0032 Single-core non-sheathed cable 0005 Vitotwin programming unit GN/YE capacitor 0006 Hinged foot...
  • Page 181 Parts lists Control unit assembly (cont.)

  • Page 182: Miscellaneous Assembly

    Parts lists Miscellaneous assembly 0001 Touch-up spray paint, white 0006 Operating instructions 0002 Touch-up paint stick, white 0007 Transport bracket 0003 Special grease 0008 Gauge 0004 Installation and service instruc- 0009 Circular level tions 0005 Wireless remote control unit installation instructions...
  • Page 183 Parts lists Miscellaneous assembly (cont.)

  • Page 184: Commissioning/Service Reports

    Commissioning/service reports Report Setting and test values Commis- Mainte- sioning nance/Serv- Date Softening fill water per- formed Fixed day entered Date Static pressure mbar Supply pressure (flow pressure) = for natural gas E mbar = for natural gas LL mbar Tick gas type Carbon dioxide content CO ■...
  • Page 185 Commissioning/service reports Report (cont.) Setting and test values Commis- Mainte- sioning nance/Serv- Generator output after 15 min. operation ■ "Power" (Code 8200 in "Diagnostics engine") ■ "Voltage" (Code 8201 in "Diagnostics engine") ■ "Current" (Code 8202 in "Diagnostics engine") ■ "Head temperature actual value" °C (Code 8360 in "Diagnostics consum- ers")

  • Page 186: Specification

    Specification Specification Rated voltage 230 V Electronic tempera- Rated frequency 50 Hz ture limiter setting 82 °C Rated current Temperature limiter Safety category setting 100 °C (fixed) IP rating IP X 4 D to Backup fuse (power EN 60529 supply) max.

  • Page 187: Certificates

    Declaration of conformity Declaration of Conformity for Vitotwin 300-W We, Viessmann Werke GmbH&Co KG, D-35107 Allendorf, confirm as sole respon- sible body that the product Vitotwin 300-W complies with the following standards: DIN 4702-6 EN 55 014 DIN V VDE V 0126-1-1...

  • Page 188: 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 product Vitotwin 300-W complies with the NO limits specified by the 1st BImSchV Paragraph 6 [Germany]. Allendorf, 01 May 2011 Viessmann Werke GmbH&Co KG...

  • Page 189: Keyword Index

    Keyword index Keyword index Enabling the Stirling burner....65 3-way diverter valve......52 External demand........92 Boiler control........153 Fault codes........123 Boiler installation........38 Fault message......55, 123 Boiler temperature......153 Faults..........121 Boiler water temperature sensor..141 Filling the heating system....62 Burner gasket........71 Filling the system.......62 Burner gauze assembly.....71 Fill water..........62 Burner removal........70 Fitting the burner........75...
  • Page 190 Keyword index Keyword index (cont.) Start-/Stop resistors......151 Manufacturer's certificate ....188 Start optimisation......154 Mixer circuit........53 Static pressure........68 Mixer motor........53 Stirling springs........77 Stop optimisation......154 Supply pressure.........68 Opening the control unit casing..47 Switching times....89, 157, 159 Operating states.......112 System pressure........62 Outside temperature sensor..49, 139 System scheme....8, 14, 19, 26 System schemes........81 System version....8, 14, 19, 26...
  • Page 192 Applicability These service instructions apply for appliances with the following serial num- bers (see type plate): 7506537 Viessmann Werke GmbH&Co KG Viessmann Limited D-35107 Allendorf Hortonwood 30, Telford Telephone: +49 6452 70-0 Shropshire, TF1 7YP, GB Fax: +49 6452 70-2780 Telephone: +44 1952 675000 www.viessmann.com...

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