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Viessmann VITODENS 100-W Installation And Service Instructions Manual

Wall mounted gas condensing boiler natural gas and lpg version
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See also: Instructions for Installation and Servicing , Installation and Service Instructions Manual
VIESMANN
Installation and service
instructions
for contractors
Vitodens 100-W
Type WB1C, 6.5 to 35.0 kW
Wall mounted gas condensing boiler
Natural gas and LPG version
Gas Council no.: 41-819-26 - 29, 47-819-20 - 22
For applicability, see the last page
VITODENS 100-W
Please keep safe.
5609 059 GB
5/2013

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  • Page 1 VIESMANN Installation and service instructions for contractors Vitodens 100-W Type WB1C, 6.5 to 35.0 kW Wall mounted gas condensing boiler Natural gas and LPG version Gas Council no.: 41-819-26 - 29, 47-819-20 - 22 For applicability, see the last page VITODENS 100-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 ■ 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 Product information................... Preparing for installation................... Installation sequence Fitting the boiler and making connections............12 Opening the control unit casing................18 Electrical connections................... 19 Service instructions Commissioning, inspection, maintenance Steps - commissioning, inspection and maintenance.......... 25 Further details regarding the individual steps............26 Troubleshooting Function sequence and possible faults..............
  • Page 5 Index Index (cont.) Certificates Declaration of conformity..................82 Keyword index....................83...

  • Page 6: Product Information

    ■ 26 kW combi: 47-819-20 systems are also available. ■ 30 kW combi: 47-819-21 If the Vitodens 100-W is installed in an S ■ 35 kW combi: 47-819-22 plan or Y plan system, the DHW primary connections are not used and must be Conversion for other countries capped off.
  • Page 7 Product information Product information (cont.) Accessory connection Cylinder temperature sensor, outside temperature sensor and time switch are connected to the control unit with low voltage.

  • Page 8: Preparing For Installation

    Preparing for installation Preparing for installation Preparing for the boiler installation Dimensions and connections 58 58 A Heating flow D Gas condensing boiler: B Gas condensing boiler: Cylinder return Cylinder flow Gas condensing combi boiler: Cold water Gas condensing combi boiler: E Heating return C Gas connection F Condensate drain/safety valve...
  • Page 9 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 10 Preparing for installation Preparing for installation (cont.) Fitting the wall mounting bracket Ø10 A Vitodens installation template...
  • Page 11 Preparing for installation Preparing for installation (cont.) 1. Position the supplied installation tem- plate on the wall. 2. Mark out the rawl plug holes. 3. Drill 7 10 mm holes and insert the rawl plugs supplied. 4. Fit wall mounting bracket with screws supplied.

  • Page 12: Installation Sequence

    Installation sequence Fitting the boiler and making connections Removing the front panel and mounting the boiler 1. Undo screws at the bottom of the 3. Hook the boiler into the wall mounting boiler; do not remove completely. bracket. 2. Remove front panel.
  • Page 13 Installation sequence Fitting the boiler and making connections (cont.) Making the connections on the water side For fittings on the heating water Gas condensing boiler side and DHW side, see separate installation instructions. ¨ A Heating flow B Gas condensing boiler: Note Cylinder flow Gas condensing combi boiler:...

  • Page 14: Gas Connection

    Installation sequence Fitting the boiler and making connections (cont.) Gas condensing combi boiler F Filling loop Gas connection 1. Connect gas shut-off valve to con- nection A.
  • Page 15 Installation sequence Fitting the boiler and making connections (cont.) 2. Carry out a tightness test. Note Only use suitable and approved leak detection agents (EN 14291) and devices to check for leaks. Leak detection agents with unsuitable con- stituents (e.g. nitrites, sulphides) can cause material damage.
  • Page 16 Installation sequence Fitting the boiler and making connections (cont.) Connection, safety valve and condensate drain ■ If the condensate pipe is routed out- side the building, use a pipe with at least 7 30 mm and protect this pipe from frost. Avoid long external pipe- lines.

  • Page 17: Filling The Siphon With Water

    Installation sequence Fitting the boiler and making connections (cont.) Filling the siphon with water Pour a minimum of 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 18: Opening The Control Unit Casing

    Installation sequence Opening the control unit casing Please note Electronic assemblies can be damaged by electrostatic dis- charge. Before beginning work, touch earthed objects, such as heating or water pipes, to discharge static loads.

  • Page 19: Electrical Connections

    PUMP L N 1 L N 4 3 2 1 % Gas condensing boiler: B OpenTherm device ■ In the case of Viessmann DHW C Connecting cable (accessory) cylinders: Cylinder temperature D Jumper sensor (plug on the cable harness E Power supply (230 V, 50 Hz).
  • Page 20 Installation sequence Electrical connections (cont.) Connection of room temperature controller and DHW cylinder with 230 V cyl- inder temperature controller A Cylinder demand terminal box D Cylinder temperature controller 230 V B Jumper, remove when making this connection E Room temperature controller C Power supply (230 V, 50 Hz).
  • Page 21 Installation sequence Electrical connections (cont.) Connection of room temperature controller with time switch and DHW cylinder with 2-way valve and 230 V cylinder temperature controller A Cylinder demand terminal box E 2-way shut-off valve B Jumper, remove when making this F High limit safety cut-out connection G Time switch...
  • Page 22 Installation sequence Electrical connections (cont.) Cable entry A Power cable, remote control con- necting cable B LV leads (sensor leads) Outside temperature sensor (accessory) 1. Fit outside temperature sensor. 2. Plug the power cable supplied with the outside temperature sensor into Installation location: slot "X21".

  • Page 23: Power Supply

    Installation sequence Electrical connections (cont.) Power supply Regulations and Directives Protect the power cable with an external 3 A fuse to BS 1362. Danger Incorrectly executed electrical Danger installations can result in injuries Incorrect core allocation can from electrical current and in result in serious injury and dam- appliance damage.
  • Page 24 Installation sequence Electrical connections (cont.) Routing connecting cables and closing the control unit enclo- sure Please note When routing and securing Connecting cables will be dam- cables/leads on site, ensure that aged if they touch hot compo- the maximum permissible tem- nents.

  • Page 25: 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..........26 • • • 2. Venting the boiler by flushing........28 •...

  • Page 26: Further Details Regarding The Individual Steps

    Commissioning, inspection, maintenance Further details regarding the individual steps Filling the heating system Please note ■ Soften fill water harder than Unsuitable fill water increases 300 ppm. the level of deposits and corro- ■ An antifreeze additive suitable sion and may lead to boiler dam- for heating systems can be age.
  • Page 27 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Gas condensing boiler 1. Open shut-off valves A and (if fitted) 2. Connect fill hose to valve C and open valve C. 3. Fill heating system [a removable fill- ing loop with double check valve must be used in UK] (system pressure 0.8 to 1.2 bar).

  • Page 28: Venting The Boiler By Flushing

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Venting the boiler by flushing Gas condensing boiler 1. Connect the drain hose on shut-off valve A to a drain. 2. Close shut-off valve B. 3. Open valves A and C and flush at mains pressure, until no sound of escaping air can be heard.

  • Page 29: Changing To Operation With Lpg

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Gas condensing boiler 1. Connect the drain hose on shut-off valve A to a drain. 2. Close shut-off valve B. 3. Open valves A, C and D and flush at mains pressure, until no sound of escaping air can be heard.

  • Page 30: Checking The Static And Supply Pressure

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Checking the static and supply pressure Danger 4. Check the static pressure. CO build-up as a result of incor- Set value: max. 57.5 mbar. rect burner adjustment can have serious health implications. 5.

  • Page 31: Matching The Burner Output To The Flue System

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) 9. Open the gas shut-off valve and start Note the appliance. The maximum pressure drop between the gas shut-off valve and Danger test nipple A at the gas train is Gas escaping from the test 0.5 mbar.

  • Page 32: Reducing The Max. Heating Output

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) 4. Within 2 s, turn rotary selector "tw" to the top left range. The display shows "r", "w", "A", and the selected correction factor flashes. In the delivered condition, factor 0 has been set.
  • Page 33 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) 2. Turn rotary selector "tr" for less than 2 s fully clockwise and then back into its control range on the right. "SERV" and "A" appear on the dis- play. 3.

  • Page 34: Matching The Circulation Pump To The Heating System

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) 5. Transfer selected heating output: Turn rotary selector "tw" for less than 2 s fully clockwise and then back into its control range on the right. During the transfer, the display shows "–...
  • Page 35 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) 1. Turn on the ON/OFF switch. 2. Turn both rotary selectors "tw" and "tr" simultaneously into their respective central positions. "SERV" appears on the display. 3. Within 2 s, turn rotary selector "tr" to the top right range.

  • Page 36: Checking The Co 2 Content

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Checking the CO content Vitodens 100-W is factory-set for natural If the actual CO or O and CO values gas. During commissioning or mainte- deviate from the stated range, check the...
  • Page 37 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) 04. Adjust the upper heating output: Turn rotary selector "tr" to the control range on the right until the display shows 5 bars for the upper heating output. 05. Check the CO content for the upper heating output.

  • Page 38: Burner Removal

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) 11. Turn both rotary selectors "tw" and "tr" into their respective original positions. Burner removal F 4x 1. Switch off the power. 4. Pull venturi extension D from the fan. 2.

  • Page 39: Checking The Burner Gasket And Burner Gauze Assembly

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) 6. Undo four screws F and remove the Please note burner. Prevent damage. Never rest the burner on the burner gauze assembly. Checking the burner gasket and burner gauze assembly Check burner gasket A for damage and Replace the burner gauze assembly if it replace if required.

  • Page 40: Checking And Adjusting Electrode

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) 6. Fit electrode B. 4. Insert and secure new burner gauze assembly D with new gasket E. Please note Please note Fasten screws tightly enough Fasten screws tightly enough to ensure the components are to ensure the components are not being damaged and are not being damaged and are...

  • Page 41: Cleaning The Heat Exchanger

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Cleaning the heat exchanger Please note Scratches on parts that are in contact with flue gas can lead to corrosion. Never use brushes to clean the heating surface. Use a vacuum cleaner to remove deposits from heat exchanger A inside the combustion chamber.

  • Page 42: Burner Installation

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) 7. Check that condensate can drain freely and that the connections are tight. Burner installation A 4x...

  • Page 43: Checking The Diaphragm Expansion Vessel And System Pressure

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) 1. Fit the burner and tighten four screws 6. Check the gas connections for tight- A diagonally. ness. Danger Please note Escaping gas leads to a risk of Fasten screws tightly enough explosion.
  • Page 44 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Note Using key A supplied, you can recharge the gas combi boiler at the fill valve. Checking all gas equipment for tightness at operating pressure Danger Please note Escaping gas leads to a risk of The use of leak detection spray explosion.

  • Page 45: Fitting The Front Panel

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Fitting the front panel 1. Hook the front panel into place. 2. Tighten screws at the bottom. 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 46: Troubleshooting

    Troubleshooting Function sequence and possible faults Display Action 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 47: Fault Messages On The 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 messages on the display Faults are indicated by a flashing fault code with fault symbol "U"...
  • Page 48 Troubleshooting Fault messages on the display (cont.) Displayed System characteris- Cause Measures fault code tics No DHW heating Short circuit, outlet Check the sensor (see temperature sen- page 56). Burner blocked Short circuit, flow Check connections and sensor lead; replace sensor if re- quired.
  • Page 49 Troubleshooting Fault messages on the display (cont.) Displayed System characteris- Cause Measures fault code tics Burner in a fault The temperature Check heating system fill state limiter has respon- level. Check circulation pump. Vent the system. Check the temperature limiter and connecting leads (see page 55).
  • Page 50 Troubleshooting Fault messages on the 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 50).

  • Page 51: Repairs

    Troubleshooting Repairs Removing the front panel 1. Undo screws at the bottom of the 2. Remove front panel. boiler; do not remove completely. Outside temperature sensor 1. Open the control unit casing. See page 18.
  • Page 52 Troubleshooting Repairs (cont.) 2. Disconnect leads from outside tem- perature sensor. 4 3 2 1 3. Check the sensor resistance and compare it with the curve. 4. Replace the sensor in the case of severe deviation. 10 20 30 Temperature in °C...

  • Page 53: 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.
  • Page 54 Troubleshooting Repairs (cont.) 2. Check the sensor resistance and compare it with the curve. 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 immersed in the heating water (risk of scald- ing).
  • Page 55 Troubleshooting Repairs (cont.) 2. Compare the sensor resistance with the curve. 3. Replace the sensor in the case of severe deviation. 10 30 50 70 90 110 Temperature in °C Checking the temperature limiter If the burner control unit cannot be reset after a fault shutdown, although the boiler water temperature is below approx.
  • Page 56 Troubleshooting Repairs (cont.) Checking the outlet temperature sensor (gas condensing combi boiler) 1. Pull leads from outlet temperature sensor A. 2. Check the sensor resistance and compare it with the curve. 3. Replace the sensor in the case of severe deviation. Note Water can leak when replacing the outlet temperature sensor.

  • Page 57: 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.
  • Page 58 Troubleshooting Repairs (cont.) 3. Replace the sensor in the case of severe deviation. 10 30 50 70 90 110 Temperature in °C Replacing the flow limiter (gas condensing combi boiler) 1. Drain the boiler from the DHW side. 2. Pivot the control unit downwards. 3.
  • Page 59 Troubleshooting Repairs (cont.) Checking or replacing the plate heat exchanger (gas condensing combi boiler) E Heating water flow G Cold water F Heating water return H DHW 1. Shut off and drain the boiler on the 4. Turn adaptor B with servomotor A heating water and the DHW side.
  • Page 60 Troubleshooting Repairs (cont.) 5. Remove two screws C from the 7. Check the heating water side for con- tamination and if required clean or plate heat exchanger and remove plate heat exchanger D with gas- replace the plate heat exchanger. kets.

  • Page 61: Gas Type Conversion

    Gas type conversion Converting from LPG to natural gas Removing gas restrictor 1. Pull cable from gas train A. 6. Remove or void gas type sticker on the top of the boiler (next to the type plate). 2. Remove union nut B. 7.
  • Page 62 Gas type conversion Converting from LPG to natural gas (cont.) Changing the gas type at the control unit 1. Turn on the ON/OFF switch. 2. Turn both rotary selectors "tw" and "tr" simultaneously into their respective central positions. "SERV" appears on the display. 3.

  • Page 63: Control Unit

    Control unit Functions and operating conditions in weather-compensated mode In weather-compensated operation, the boiler water temperature is regulated according to the outside temperature. Heating curve of the weather-compensated control unit -5 -10 -15 -20 Outside temperature in °C Setting of rotary selector "tr" Frost protection function becomes active A = 1 at outside temperatures of <...

  • Page 64: Designs

    Designs Connection and wiring diagram Stepper motor diverter valve Vitotrol 100 type UTA or on-site room temperature controller Ignition/ionisation (switched 230 V input)
  • Page 65 Vitotrol 100, type RT or on-site Gas condensing boiler: room temperature controller ■ In the case of DHW cylinders (switched input 230 V) from Viessmann: Cylinder tem- Vitotrol 100 type UTDB or on-site perature sensor room temperature controller ■ In the case of alternative DHW...

  • Page 66: 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 67: Overview Of The Assemblies

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

  • Page 68: Sheet Metal Parts Assembly

    Parts lists Sheet metal parts assembly 0001 Front panel 0005 Air box floor 0002 Profiled seal 0006 Diaphragm grommets (set) 0003 Logo 0007 Wall mounting bracket 0004 Strain relief upper part 0008 Control flap 0007 0002 0001 0002 0008 0005 0006 0004...

  • Page 69: Heat Cell Assembly

    Parts lists Heat cell assembly 0001 Gasket DN 60 0009 Tee 0002 Boiler flue connection 0010 Gas pipe 0003 Boiler flue connection plug 0011 Gasket 17 x 24 x 2 (set) 0004 Flue gas gasket 0012 Burner 0005 Flue gas temperature sensor 0013 Thermal insulation block 0006 Heat exchanger 0014 Heat exchanger mounting (set)

  • Page 70: Burner Assembly

    Parts lists Burner assembly 0001 Burner gasket 0009 Radial fan 0002 Thermal insulation ring 0010 Gas valve 0003 Cylinder burner gauze assembly 0012 Venturi extension 0004 Burner gauze assembly gasket 0013 Gasket A 17 x 24 x 2 (set) 0005 Burner door 0014 Conversion kit G31 0006 Ionisation electrode gasket 0015 Gasket set G27 (not GB)
  • Page 71 Parts lists Burner assembly (cont.) 0003 0002 0001 0004 0007 0006 0005 0004 0006 0013 0008 0009 0010 0014 0013 0012 0015 0016 0015...

  • Page 72: Hydraulic Assembly

    Parts lists Hydraulic assembly 0001 Diaphragm expansion vessel 0011 Air vent valve G ⅜ 0002 Support block, diaphragm expan- 0012 Temperature sensor sion vessel 0013 Round sealing ring 8 x 2 0003 Gasket A 10 x 15 x 1.5 (set) 0014 Moulded hose heating water flow 0004 Connection line;...
  • Page 73 Parts lists Hydraulic assembly (cont.) 0002 0001 0003 0005 0007 0010 0003 0010 0007 0012 0018 0021 0010 0006 0007 0020 0007 0010 0004 0018 0003 0007 0009 0011 0009 0014 0013 0007 0007 0019 0007 0007 0016 0015 0019 0015 0016 0007...

  • Page 74: System Boiler Hydraulic Assembly

    Parts lists System boiler hydraulic assembly 0001 Air vent valve 0015 Linear stepper motor 0002 O-ring 34 x 3 (5 pce) 0016 Oval cap seal (5 pce) 0004 Gasket set, plate heat exchanger 0020 Hydraulics 0005 Safety valve 3 bar 0021 O-ring 19.8 x 3.6 (5 pce) 0007 Special safety valve clip (5 pce) 0022 O-ring 16 x 3 (5 pce)
  • Page 75 Parts lists System boiler hydraulic assembly (cont.) 0015 0014 0004 0014 0016 0001 0002 0002 0005 0009 0022 0007 0012 0022 0023 0020 0001 0023 0004 0007 0012 0009 0022 0021 0015 0016 0012 0031 0026 0031 0021 0008 0026...

  • Page 76: Combi Hydraulic Assembly

    Parts lists Combi hydraulic assembly 0001 Air vent valve 0015 Linear stepper motor 0002 O-ring 34 x 3 (5 pce) 0016 Oval cap seal (5 pce) 0003 Plate heat exchanger 0017 Water volume controller 0004 Gasket set, plate heat exchanger 0018 Temperature sensor 0005 Safety valve 0020 Hydraulics...

  • Page 77: Control Unit Assembly

    Parts lists Combi hydraulic assembly (cont.) 0015 0003 0020 0014 0004 0001, 0004, 0006, 0009, 0010, 0011, 0017, 0018, 0021, 0014 0024, 0026, 0027 0017 0016 0009 0023 0022 0012 0012 0018 0022 0022 0006 0023 0004 0006 0001 0002 0029 0006 0011...
  • Page 78 Parts lists Control unit assembly (cont.) 0005 Cable harness X20 0008 Fan connecting cable 0006 Ignition cable with angled plug 0009 Cable harness stepper motor 5 kΩ 0010 Fuse 2.5 A (slow) 250 V 0007 Gas valve cable 0001 0002 0010 0003 0002...

  • Page 79: Miscellaneous Assembly

    Parts lists Miscellaneous assembly 0001 Spray paint, Vitowhite 0004 Operating instructions 0002 Touch-up paint stick, Vitowhite 0005 Installation and service instruc- 0003 Special grease tions 0001 0002 0003 0004 0005...

  • Page 80: 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 X4 to EN 60529 Permissible ambient temperature ■ during operation: 0 to +40 °C ■...
  • Page 81 Specification Specification (cont.) Rated heating output range in heating mode 50/30 °C 6.5 – 19 6.5 – 26 8.8 – 30 8.8 – 35 80/60 °C 5.9 – 5.9 – 8.0 – 8.0 – 31.9 17.3 23.7 27.3 Min. operating pressure, —...

  • Page 82: Declaration Of Conformity

    Declaration of conformity Declaration of Conformity for the Vitodens 100-W We, Viessmann Werke GmbH&Co KG, D-35107 Allendorf, confirm as sole respon- sible body that the product Vitodens 100-W complies with the following standards: EN 297 EN 55 014-2 EN 483...

  • Page 83: Keyword Index

    Keyword index Keyword index Gas train ...........30 Boiler water temperature sensor ..53 Gas type conversion......61 Burner gasket........39 ■ LPG..........29 Burner gauze assembly.....39 ■ Natural gas........61 Burner installation......42 Burner removal........38 Heating curve........63 Cleaning the combustion chamber..41 Cleaning the heat exchanger.....41 Ignition..........40 Commissioning........26 Ignition electrode........40 Condensate........16...
  • Page 84 Applicability Serial No.: 7499423 7499424 7499425 7499426 7499427 7499428 7499429 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 Fax: +44 1952 675040...

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