Viessmann Vitodens 050-W BP JD Installation And Service Instructions Manual
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Viessmann Vitodens 050-W BP JD Installation And Service Instructions Manual

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VIESMANN
Installation and service
instructions
for contractors
Vitodens 050-W
Type BPJD, 6.5 to 35.0 kW
Wall mounted gas condensing boiler
For natural gas and LPG
Gas Council Number: 47 819 31, 47 819 32
For applicability, see the last page
VITODENS 050-W
Please keep safe.
5675 991 GB
2/2015

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Summary of Contents for Viessmann Vitodens 050-W BP JD

  • Page 1 VIESMANN Installation and service instructions for contractors Vitodens 050-W Type BPJD, 6.5 to 35.0 kW Wall mounted gas condensing boiler For natural gas and LPG Gas Council Number: 47 819 31, 47 819 32 For applicability, see the last page VITODENS 050-W Please keep safe.

  • Page 2: Safety Instructions

    Safety instructions Safety instructions Please follow these safety instructions closely to prevent accidents and mate- rial losses. Safety instructions explained ■ Codes of practice of the relevant trade associations Danger ■ All current safety regulations as This symbol warns against the defined by DIN, EN, DVGW, TRGI, risk of injury.
  • Page 3 ■ Open windows and doors. tem. ■ Evacuate any people from the Replace faulty components only danger zone. with genuine Viessmann spare ■ Notify your gas or electricity parts. supply utility from outside the building. Auxiliary components, spare and ■...
  • Page 4 Safety instructions Safety instructions (cont.) What to do if water escapes from the Danger appliance The simultaneous operation of the boiler and appliances that Danger extract air to the outside can When water escapes from the result in life threatening poison- appliance there is a risk of elec- ing due to reverse flow of the flue trocution.

  • Page 5: Table Of Contents

    Index Index Installation instructions Information Symbols........................ Intended use......................Product information....................Disposal of packaging..................10 Preparing for installation................... 11 Installation sequence Mounting the boiler and making the connections..........15 Opening the programming unit................20 Electrical connections................... 21 Service instructions Commissioning, inspection, maintenance Steps - commissioning, inspection and maintenance..........
  • Page 6 Index Index (cont.) Miscellaneous assembly..................85 Specification....................... 86 Certificates Declaration of conformity..................87 Keyword index....................88...

  • Page 7: Information

    Information Symbols Sym- Meaning Reference to other document containing further information Step in a diagram: The numbers correspond to the order in which the steps are car- ried out. Warning of material losses and environmental pollution Live electrical area Pay particular attention. ■...

  • Page 8: Intended Use

    Information Intended use The appliance is only intended to be Any usage beyond this must be installed and operated in sealed unven- approved by the manufacturer in each ted heating systems that comply with individual case. EN 12828, with due attention paid to the associated installation, service and Incorrect usage or operation of the appli- operating instructions.
  • Page 9 Information Product information (cont.) The following components are integra- ■ Cupboards (open at the top) ted into the hydraulic system: ■ Recesses without compulsory clear- ■ Circulation pump ance towards combustible materials ■ 3-way diverter valve ■ Attic rooms (pitched attics and long ■...

  • Page 10: Disposal Of Packaging

    Information Product information (cont.) When installing the Vitodens in wet VDE 0100 specifies that cables supply- areas, observe the safety zones and ing permanently installed consumers in minimum wall clearances according to zones 1 and 2 should only be run verti- VDE 0100 [or local regulations] (see also cally and routed into the equipment from "Electrical safety zone").

  • Page 11: Preparing For Installation

    Preparing for installation Preparing for installation Preparing for boiler installation Dimensions and connections 58 58 Shown without fittings A Heating flow 7 22 mm E Heating return 7 22 mm B DHW 7 15 mm F Condensate drain/safety valve C Gas connection 7 22 mm drain: Plastic hose 7 22 mm D Cold water 7 15 mm...
  • Page 12 Preparing for installation Preparing for installation (cont.) Minimum clearances Maintain a clearance of 700 mm in front of the Vitodens for maintenance purpo- ses. Maintenance clearances to the l.h. or r.h. side of the Vitodens are not required.
  • Page 13 Preparing for installation Preparing for installation (cont.) Fitting the wall mounting bracket Ø10 A Vitodens installation template 1. Position the supplied installation tem- 2. Mark out the rawl plug holes. plate on the wall.
  • Page 14 Preparing for installation Preparing for installation (cont.) 3. Drill 7 10 mm holes and insert the Installation in a cupboard rawl plugs supplied. Any cupboard enclosing the appliance must be designed and constructed spe- 4. Fit wall mounting bracket with screws cifically for this purpose.

  • Page 15: Installation Sequence

    Installation sequence Mounting the boiler and making the connections Removing the front panel and mounting the boiler 1. Undo the screws at the bottom of the 3. Hook the boiler onto the wall mount- boiler; do not remove completely. ing bracket. 2.
  • Page 16 Installation sequence Mounting the boiler and making the connections (cont.) Making the connections on the water side ¨ A Heating flow G ¾ C Cold water G ½ B DHW G ½ D Heating return G ¾ 1. Mount fittings with gaskets. 2.

  • Page 17: Gas Connection

    Installation sequence Mounting the boiler and making the connections (cont.) Gas connection ¨ 1. Mount gas shut-off valve with bend to 3. Carry out a tightness test. connection A. Note 2. Connect gas supply to connection Only use suitable and approved leak detection agents (EN 14291) and devices for the tightness test.
  • Page 18 Installation sequence Mounting the boiler and making the connections (cont.) Please note 4. Purge the gas line. Excessive test pressure will damage the boiler and the gas train. Max. test pressure 150 mbar (15 kPa). If a higher pressure is required for tightness tests, disconnect the boiler and the gas train from the main supply pipe (undo the fitting).

  • Page 19: Filling The Siphon With Water

    Installation sequence Mounting the boiler and making the connections (cont.) Filling the siphon with water Pour at least 0.3 l of water into the flue outlet. Please note During commissioning, flue gas may escape from the condensate drain. Always fill the siphon with water before commissioning.

  • Page 20: Opening The Programming Unit

    Installation sequence Mounting the boiler and making the connections (cont.) Danger Ensure the flue system functions Leaking or blocked flue systems correctly. Apertures for combus- or an insufficient supply of com- tion air supply must not be able to bustion air cause life threatening be closed off.

  • Page 21: Electrical Connections

    Installation sequence Electrical connections 4 3 2 1 A Terminals on underside of appli- Information on connecting ance accessories B Outside temperature sensor When connecting accessories C Vitotrol 100 or on-site room temper- observe the separate installation ature controller with LV switching instructions provided with them.

  • Page 22: Power Supply

    Installation sequence Electrical connections (cont.) Outside temperature sensor (accessories) 1. Fit outside temperature sensor. 2. Connect the outside temperature sensor across terminals 3 and 4 Installation site: (underside of appliance). ■ North or north-westerly wall, 2 to 2.5 m above ground level; in multi storey buildings, in the upper half of the 2nd floor ■...

  • Page 23: Routing The Connecting Cables

    Installation sequence Electrical connections (cont.) Danger The appliance and pipework The absence of component must be connected to the equi- earthing can lead to serious injury potential bonding of the building. from electric current if an electri- cal fault occurs. Routing the connecting cables Please note Connecting cables will be dam-...

  • Page 24: Commissioning, Inspection, Maintenance

    Commissioning, inspection, maintenance Steps - commissioning, inspection and maintenance For further information regarding the individual steps, see the page indicated Commissioning steps Inspection steps Maintenance steps Page • • • 1. Filling the heating system..........25 • • • 2. Converting to operation with LPG........ 27 •...

  • Page 25: Further Details Regarding The Individual Steps

    Commissioning, inspection, maintenance Further details regarding the individual steps Filling the heating system Please note ■ Fill water with a hardness Unsuitable fill water increases above 300 ppm must be soft- the level of deposits and corro- ened. sion and may lead to boiler dam- ■...
  • Page 26 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) 4. Open shut-off valves B and C.

  • Page 27: Converting To Operation With Lpg

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) 5. Fill and vent the heating system using the on-site valve. System pressure 0.8 to 1.2 bar (0.08 to 0.1 MPa). The system can be filled using a sep- arate filling point fitted at a convenient position on the heating circuit.
  • Page 28 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Gas train viewed from behind 1. Close the gas shut-off valve. 5. Start the boiler. 2. Undo screw A inside test connector Note "IN" on the gas train, but do not During commissioning, the boiler can remove it.

  • Page 29: Reducing The Max. Heating Output

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) 6. Check the supply (flow) pressure. 8. Shut down the boiler, close the gas shut-off valve, remove the pressure Set value: gauge and tighten screw in test con- ■ Natural gas: 20 mbar (2.0 kPa) nector A.

  • Page 30: Matching The Burner Output To The Flue System

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) 4. Press MODE and simultaneously 5. Start the boiler. for 3 s. Service mode is terminated. Service 6. Check the selected burner output by mode also terminates automatically measuring the gas throughput at a after 30 min.

  • Page 31: Burner Adjustment When Connecting Multiple Flues To A Flue System

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Room sealed operation 7 60 mm coaxial Correction fac- Rated heating Flue length (m) output (kW) ≤ 4 > 4 ≤ 8 > 8 ≤ > 12 ≤ Do not adjust ≤...
  • Page 32 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) One boiler per floor Rated heating output 24 kW Number of boilers Correction factor (setting value) Flue length a (m) ≤ 21 > 21 ≤ 25 ≤ 19 ≤ 13 –...
  • Page 33 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) 3 m...
  • Page 34 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Two boilers per floor Rated heating output 24 kW Number of boilers Correction factor (setting value) Flue length a (m) ≤15 ≤5 – > 5 ≤ 9 – > 9 ≤ 14 –...

  • Page 35: Checking The Co 2 Content

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) 3 m Checking the CO content The Vitodens 050-W is factory-set for We recommend measuring O as the natural gas. During commissioning or value is unmistakable regarding lambda maintenance, the CO and CO have to (air/gas).
  • Page 36 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Note Operate the appliance with uncontami- nated combustion air to prevent operat- ing faults and damage. 1. Connect a flue gas analyser at flue gas port A on the boiler flue con- nection.
  • Page 37 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) 4. Set the higher heating output and check the CO content. Subject to gas type, the CO content must be within the following range. See table. Gas type content in % E or H (G20) 7.5 –...

  • Page 38: Burner Removal

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Burner removal 1. Switch ON/OFF switch to OFF. 5. Undo the fitting from gas supply pipe 2. Shut off the gas supply. 6. Undo 4 screws G and remove the 3.
  • Page 39 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) 1. Remove electrode B. 4. Insert and secure new burner gauze assembly D with new gasket E. 2. Undo the 2 Torx screws and remove thermal insulation ring C. Please note Tighten screws just enough 3.

  • Page 40: Checking And Adjusting The Electrode

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) 5. Mount thermal insulation ring C. 6. Fit electrode B. Please note Please note Tighten screws just enough Tighten screws just enough to ensure the components do to ensure the components do not suffer damage and will not suffer damage and will function correctly.

  • Page 41: Cleaning The Heat Exchanger

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Cleaning the heat exchanger Please note Note Do not damage the surfaces of Discolouration on the heat exchanger the heat exchanger that come surface is a normal sign of use. It has no into contact with hot gas.

  • Page 42: Checking The Condensate Drain And Cleaning The Siphon

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Checking the condensate drain and cleaning the siphon 1. Unclip burner control unit A and 6. Refit siphon B to the drain connec- remove. Protect against escaping tion. condensate. 7. Install burner control unit A. Check 2.

  • Page 43: Installing The Burner

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Installing the burner 1. Fit burner and tighten 4 screws A 4. Install the power cables of fan motor D, gas train E, ignition unit F and diagonally. electrodes G. Please note Tighten screws just enough 5.

  • Page 44: Checking The Diaphragm Expansion Vessel And System Pressure

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) 6. Check the gas connections for Please note leaks. The use of leak detection spray can result in faulty oper- Danger ation. Escaping gas leads to a risk of Leak detection spray must not explosion.

  • Page 45: Fitting The Front Panel

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Leak detection spray must not come into contact with electrical contacts or seal the diaphragm opening on the gas valve. Fitting the front panel 1. Hook the front panel into place. 2.

  • Page 46: Instructing The System User

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Instructing the system user The system installer should hand the operating instructions to the system user and instruct the user in operating the system.

  • Page 47: Troubleshooting

    Troubleshooting Function sequence and possible faults Display Measures Control unit issues Increase set value a heat demand and ensure heat is drawn off Fan starts After approx. 1 min Check the fan, fan fault F9 connecting cables, power at the fan and fan control Ignition Fault F4...

  • Page 48: Fault Display

    Troubleshooting Function sequence and possible faults (cont.) Burner in opera- Stops below the set Check the flue sys- tion boiler water tem- tem for tightness perature and re- (flue gas recircula- starts immediately tion); check the gas flow pressure Fault display Display ■...
  • Page 49 Troubleshooting Fault display (cont.) Displayed System characteris- Cause Measures fault code tics Burner blocked Short circuit, flow Check connections and sensor lead; replace sensor if re- quired. No DHW heating Lead break, outlet Check sensor (see temperature sen- page 57). Burner blocked Lead break, flow Check connections and...
  • Page 50 Troubleshooting Fault display (cont.) Displayed System characteris- Cause Measures fault code tics Burner in a fault Flame signal is al- Check ionisation elec- state ready present at trode and connecting ca- burner start ble. Press "Reset" (see page 51). Burner in a fault No flame signal de- Check the ignition/ionisa- state...
  • Page 51 Troubleshooting Fault display (cont.) Displayed System characteris- Cause Measures fault code tics Burner blocked Fault, burner con- Check ignition electrodes trol unit and connecting cables. Check whether a strong interference (EMC) field exists near the appliance. Press "Reset" (see page 51). Replace control unit if fault persists.
  • Page 52 Troubleshooting (cont.) Please note Water ingress can result in dam- Residual water will escape when age to other components. the boiler or one of the following components is fitted or Protect the following components removed: against ingress of water: ■ Water-filled pipework ■...

  • Page 53: Repairs

    Troubleshooting Repairs Removing the front panel 1. Undo screws at the bottom of the 2. Remove the front panel. boiler; do not remove completely.

  • Page 54: Outside Temperature Sensor

    Troubleshooting Repairs (cont.) Outside temperature sensor 4 3 2 1 1. Disconnect leads from outside tem- perature sensor A. -20 -10 0 10 20 Temperature in °C Sensor type: NTC 10 kΩ 2. Check the sensor resistance and 3. In the event of severe deviation compare it with the curve.

  • Page 55: Boiler Water Temperature Sensor

    Troubleshooting Repairs (cont.) Boiler water temperature sensor 1. Pull the leads from boiler water tem- perature sensor A and check the resistance. 10 30 50 70 90 110 Temperature in °C Sensor type: NTC 10 kΩ 2. Check the sensor resistance and compare it with the curve.
  • Page 56 Troubleshooting Repairs (cont.) 3. In the case of severe deviation, drain the boiler on the heating water side and replace the sensor. Danger The boiler water temperature sensor is in direct contact with the heating water (risk of scalding). Drain the boiler before replac- ing the sensor.
  • Page 57 Troubleshooting Repairs (cont.) Checking the outlet temperature sensor 1. Pull leads from outlet temperature sensor A. 2. Check the sensor resistance and compare it with the curve. 10 30 50 70 90 110 Temperature in °C Sensor type: NTC 10 kΩ 3.

  • Page 58: Check Flue Gas Temperature Sensor

    Troubleshooting Repairs (cont.) Check flue gas temperature sensor 1. Pull leads from flue gas temperature sensor A. 2. Check the sensor resistance and compare it with the curve. 10 30 50 70 90 110 Temperature in °C Sensor type: NTC 10 kΩ 3.

  • Page 59: Replacing The Flow Limiter

    Troubleshooting Repairs (cont.) Replacing the flow limiter 1. Drain the boiler on the DHW side. 2. Pull off spring clip A. 3. Remove flow sensor B. 4. Remove faulty flow limiter C. 5. Check fitted strainer for dirt/contami- nation. Clean strainer if required. 6.
  • Page 60 Troubleshooting Repairs (cont.) Replacing the flow sensor 01. Drain the boiler on the DHW side. 02. Pull the leads off faulty flow sensor 03. Pull off spring clip B. 04. Remove enclosure C with flow sensor A. 05. Pull off spring clip D and remove faulty flow sensor A.
  • Page 61 Troubleshooting Repairs (cont.) Checking or replacing the plate heat exchanger C Heating water return E DHW D Heating water flow F Cold water 1. Shut off and drain the boiler on the 2. Undo screw A on the plate heat heating water and the DHW side.
  • Page 62 Troubleshooting Repairs (cont.) 3. Check the connections on the DHW 5. Install in reverse order using new side for scaling; clean or replace the gaskets. plate heat exchanger if required. Note 4. Check the connections on the heat- During installation, ensure the fixing ing water side for contamination;...

  • Page 63: Gas Type Conversion

    Gas type conversion Converting from LPG to natural gas Removing the gas restrictor 1. Pull cable from gas train A. 7. Mount gas train A with new gas gas- ket F. 2. Undo union nut B and remove gas gasket. Please note Tighten screws just enough 3.
  • Page 64 Gas type conversion Converting from LPG to natural gas (cont.) 9. Start the boiler and check for leaks. Please note The use of leak detection Danger spray can result in faulty oper- Escaping gas leads to a risk of ation. explosion.

  • Page 65: Control Unit

    Control unit Functions and operating conditions in weather-compensated mode If an outside temperature sensor is con- The heating curve is set at the control nected to the control unit, the boiler unit as a code. In the delivered condition, water temperature is regulated subject to the heating curve with code 20 is set.
  • Page 66 Control unit Functions and operating conditions in… (cont.) Frost protection function The frost protection function requires an outside temperature sensor to be con- nected. The frost protection function becomes active at outside temperatures of < 5 °C. The burner starts and the boiler water temperature is held at 20 °C.

  • Page 67: Designs

    Designs Connection and wiring diagrams Overview Power supply Programming unit ON/OFF switch Main PCB in control unit enclosure X ... Electrical interface on side panel...
  • Page 68 Designs Connection and wiring diagrams (cont.) Programming unit Power supply...
  • Page 69 Designs Connection and wiring diagrams (cont.) Gas pressure switch (accesso- Jumper, remove when connecting ries) room temperature controller Outside temperature sensor Main PCB (accessories) Programming unit Room temperature controller ON/OFF switch (accessories) X ... Electrical interface Time switch or wireless receiver (accessories)
  • Page 70 Designs Connection and wiring diagrams (cont.) Control unit Programming unit connection Flow sensor...
  • Page 71 Designs Connection and wiring diagrams (cont.) Diverter valve stepper motor Flue gas temperature sensor Ionisation electrode sÖ Circulation pump 230 V~ Main PCB Gas solenoid valve Power supply unit fÖ Power supply Programming unit Temperature limiter PWM Circulation pump switching Ignition X ...

  • Page 72: 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 73: Overview Of Assemblies

    Parts lists Overview of assemblies A Type plate D Hydraulic assembly B Casing assembly E Control unit assembly C Heat cell assembly F Miscellaneous assembly...

  • Page 74: Casing Assembly

    Parts lists Casing assembly Pos. Part 0001 Front panel 0002 Profiled seal 0003 Viessmann logo 0004 Wall mounting bracket 0004 0002 0003 0001 0002 0003...

  • Page 75: Heat Cell Assembly

    Parts lists Heat cell assembly Pos. Part 0001 Gasket DN 60 0002 Boiler flue connection 0003 Boiler flue connection plug 0004 Flue gasket 0005 Flue gas temperature sensor 0006 Heat exchanger 0007 Condensate hose 0008 Splash siphon 0009 Tee connector 7 19 0010 Gas connection 0011...
  • Page 76 Parts lists Heat cell assembly (cont.) 0005 0001 0001 0003 0002 0003 0014 0004 0014 0015 0014 0006 0004 0013 0013 0014 0012 0015 0018 0011 0007 0010 0011 0008 0009 0016 0017...

  • Page 77: Burner Assembly

    Parts lists Burner assembly Pos. Part 0001 Burner gasket 7 187 0002 Thermal insulation ring 0003 Cylinder burner gauze assembly 0004 Burner gauze assembly gasket 0005 Burner door 0006 Gasket, ionisation electrode (5 pce) 0007 Ignition/ionisation electrode 0008 Burner door flange gasket 0009 Radial fan NRG 118 0010...
  • Page 78 Parts lists Burner assembly (cont.) 0004 0003 0002 0001 0001 0004 0006 0006 0008 0007 0006 0005 0004 0012 0008 0010 0008 0012 0009 0012 0012 0011 0013 0011...

  • Page 79: Hydraulic Assembly

    Parts lists Hydraulic assembly Pos. Part 0001 Diaphragm expansion vessel CRI 8 0002 Diaphragm expansion vessel padding profile 0003 Gasket A 10 x 15 x 1.5 (5 pce) 0004 DEV connection line G 3/8 0005 Connection elbow HR brass 0006 Profile hose HR 0007 Spring clip DN 25 (5 pce)
  • Page 80 Parts lists Hydraulic assembly (cont.) 0002 0001 0003 0003 0003 0009 0007 0012 0010 0004 0005 0010 0007 0009 0010 0009 0011 0016 0007 0009 0009 0010 0012 0007 0007 0013 0015 0018 0007 0006 0018 0018 0018 0017 0008 0008 0014...

  • Page 81: Grundfos Hydraulic Assembly

    Parts lists Grundfos hydraulic assembly Pos. Part 0001 Flow casing EU1 0002 Temperature sensor 0003 Expansion tank 0004 O-ring 19.8 x 3.6 (5 pce) 0005 O-ring 16 x 3 (5 pce) 0006 Clip 7 8 narrow (5 pce) 0008 Plate heat exchanger 0009 Circulation pump motor 0010...
  • Page 82 Parts lists Grundfos hydraulic assembly (cont.) 0002 0003 0006 0006 0004 0002 0003 0005 0019 0004 0006 0001 0005 0019 0009 0011 0012 0030 0004 0015 0018 0005 0020 0028 0010 0010 0011 0015 0010 0010 0011 0015 0018 0020 0012 0010 0010...

  • Page 83: Control Unit Assembly

    Parts lists Control unit assembly Pos. Part 0001 Programming unit 0002 Burner control unit 0003 Cable harness X1/X17/stepper motor 0004 Cable harness 100/35/54/ion 0005 Cable harness, connecting cable X21/GFA/programming unit 0006 Outside temperature sensor lead 0007 Connecting cable, heating circuit pump 20 0008 PWM BUS cable 0009...
  • Page 84 Parts lists Control unit assembly (cont.) 0002 0010 0001 0003 0004 0005 0006 0007 0008 0009...

  • Page 85: Miscellaneous Assembly

    Parts lists Miscellaneous assembly Pos. Part 0001 Touch-up spray paint, Vitowhite, 150 ml can 0002 Touch-up paint stick, Vitowhite 0003 Special grease 0004 Operating instructions 0005 Installation and service instructions 0001 0004 0002 0005 0003...

  • Page 86: Specification

    Specification Specification Rated voltage: 230 V~ Temperature limiter Rated frequency: 50 Hz setting: 100 °C (fixed) Rated current: 2.0 A~ Backup fuse (power Safety category: supply): IP rating: IP X4D to EN 60529 Permissible ambient temperature ■ During operation: -5 to +40 °C ■...

  • Page 87: Certificates

    Certificates Declaration of conformity Declaration of Conformity for the Vitodens 050-W We, Viessmann Werke GmbH & Co KG, D-35107 Allendorf, confirm as sole respon- sible body that the product Vitodens 050-W complies with the following standards: EN 297 EN 55 014-2...

  • Page 88: Keyword Index

    Keyword index Keyword index Boiler water temperature sensor ..55 Heat exchanger cleaning....41 Burner gasket........38 Heating curve........65 Burner gauze assembly.....38 Heating output reduction....29 Burner installation......43 Burner removal........38 Ignition..........40 Ignition electrode........40 Combustion chamber cleaning..41 Ionisation electrode......40 Commissioning........25 Condensate........18 Condensate drain......18, 42 Max. heating output......29 Connection diagram......67 Multiple flue system connection..31 –...
  • Page 89 Keyword index Keyword index (cont.) Ventilation air pipe......19 Wall mounting........13 Water side connections......16 Weather-compensated mode.....65...
  • Page 92 Applicability These service instructions relate to appliances with the following serial num- bers (see type plate): 7202938 7202939 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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