Viessmann VITOPEND 200 Installation And Service Instructions Manual
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Viessmann VITOPEND 200 Installation And Service Instructions Manual

Gas fired combi boiler
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VIESMANN
Installation and service
instructions
for heating engineers
Vitopend 200
Type WHKA
Gas fired combi boiler
for balanced flue operation
Natural gas and LPG version
For applicability, see the last page
VITOPEND 200
Please keep safe
5862 831 GB
8/2005

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Summary of Contents for Viessmann VITOPEND 200

  • Page 1 VIESMANN Installation and service instructions for heating engineers Vitopend 200 Type WHKA Gas fired combi boiler for balanced flue operation Natural gas and LPG version For applicability, see the last page VITOPEND 200 Please keep safe 5862 831 GB 8/2005...
  • Page 2 Safety instructions Safety instructions Please follow these safety instructions closely to prevent accidents and material losses. & Safety instructions explained the Code of Practice of relevant trade associations, & Danger all current safety regulations as This symbol warns against the defined by DIN, EN, DVGW, TRGI, risk of injury.
  • Page 3 Viess- mann or those which are Please note approved by Viessmann. Repairing components which fulfil a safety function can com- promise the safe operation of your heating system. Replace faulty components only with original Viessmann spare parts.

  • Page 4: Table Of Contents

    Index Index Installation instructions Preparing the installation Product information ..................Preparing the installation ................Installation steps Installing the boiler and fitting the connections ..........Flue gas connection..................10 Gas connection ..................11 Opening the control unit casing ..............12 Electrical connections ................. 13 Mounting the programming unit in the control unit ........
  • Page 5 Index Index (cont.) Designs Connection and wiring diagram – internal connections ........ 111 Connection and wiring diagram – external connections ....... 113 Parts lists ....................115 Commissioning/service reports ............... 121 Specification ..................... 122 Certificates Declaration of conformity ................124 Manufacturer's certificate according to the 1st BImSchV [Germany]..... 124 Keyword index ..................

  • Page 6: Product Information

    Set up for operation with natural gas E. May be converted with a conversion kit to natural gas LL or LPG. Generally, the Vitopend 200 should only be supplied to the countries stated on the type plate. For delivery to other countries the acceptance in accordance with the statutes of that country must be arranged by an authorised contractor.
  • Page 7 Preparing the installation Preparing the installation (cont.) A Heating flow R E Heating return R ¾" ¾" B Hot water R F Fill & drain valve ½" C Gas connection G Cable arrangement area D Cold water R ½" 1. Prepare the water connections. Flush the heating system.
  • Page 8 Preparing the installation Preparing the installation (cont.) 3. Prepare the electrical connections. & Power supply cable: NYM‐ J 3 x 1.5 mm , fuse max. 16 A, 230 V~, 50 Hz. & Cables for accessories: NYM with the required number of con- ductors for the external connec- tions.

  • Page 9: Installation Steps Installing The Boiler And Fitting The Connections

    Installation steps Installing the boiler and fitting the connections...

  • Page 10: Flue Gas Connection

    Installation steps Flue gas connection 1. Release the tensioning screws on the flue outlet flange. 2. Insert the boiler adaptor. Note Fit parallel boiler adaptor C so that its connector points towards the left or right. 3. Tighten the tensioning screws. Flue gas system installation instructions A Tensioning screws on the flue out-...

  • Page 11: Gas Connection

    Installation steps Gas connection 2. Carry out a gas soundness test. Please note Excessive test pressure may damage the boiler and gas valve. Max. test pressure 150 mbar. If a higher pres- sure is required for leak tests, separate the boiler and the gas train from the A Gas shut‐off valve mains gas supply pipe (undo...

  • Page 12: Opening The Control Unit Casing

    Installation steps Opening the control unit casing...

  • Page 13: Electrical Connections

    Installation steps Electrical connections Notes regarding the connection of accessories For details of accessories, also observe the separate installation instruc- tions provided. A Radio clock connection B Vitotrol 100 UTD (only for con- stant temperature control units) C Vitotrol 100 UTA (only for constant temperature control units)
  • Page 14 Installation steps Electrical connections (cont.) Plug 230 V~ Low voltage plugs fÖ Power supply ! Outside temperature sensor (only for weather‐compensated opera- Danger tion) Incorrect core terminations Installation: & can cause severe injuries North or north‐western wall, 2 to and damage to the equip- 2.5 m above ground level, in ment.
  • Page 15 Installation steps Electrical connections (cont.) Routing connecting cables Please note Connecting cables will be damaged if they are laid onto hot components. When routing and securing connecting cables on site, ensure that the maximum permissible temperatures of the cables are not exceeded. A Low voltage connections D Main PCB B 230 V connections...

  • Page 16: Mounting The Programming Unit In The Control Unit

    Installation steps Mounting the programming unit in the control unit...

  • Page 17: Front Panel Installation

    Installation steps Front panel installation...

  • Page 18: Steps – Initial Start-Up, Inspection And Maintenance

    Initial start-up, inspection, maintenance Steps – initial start-up, inspection and maintenance For further information regarding individual steps, see the pages indicated. Commissioning steps Inspection steps Maintenance steps Page • • • 1. Filling the heating system ..........•...

  • Page 19: Commissioning Steps

    Initial start-up, inspection, maintenance Steps – initial start-up, inspection and . . . (cont.) Commissioning steps Inspection steps Maintenance steps Page • • • 21. Checking the tightness of electrical connections • • • 22. Checking all gas equipment for soundness at operating pressure .

  • Page 20: Filling The Heating System

    Initial start-up, inspection, maintenance Further details regarding the individual steps Filling the heating system Please note Unsuitable fill water increases the level of deposits and corrosion and may lead to boiler damage. & Thoroughly flush the entire heating system prior to filling with water. &...

  • Page 21: Venting The Heating System

    Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) 5. Close the boiler fill & drain 6. Close the shut‐off valves on the pri- valve A. mary side. Venting the heating system 1. Start the control unit. 3. Check the system pressure. 2.

  • Page 22: Checking The Gas Type

    2. d as confirmation; wait approx. 4 s. Checking the gas type Note In the delivered condition, the Vitopend 200 is set up for natural gas E. The boiler can be operated in the Wobbe index range 12.0 to 16.1 kWh/m (43.2 to 58.0 MJ/m 1.

  • Page 23: Function Sequence And Possible Faults

    Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Function sequence and possible faults For further information, see page 78 Display screen Measures Control unit is- Increase set sues heat de- value and ensure mand heat is drawn off Fan starts after approx.

  • Page 24: Checking The Static And Supply Pressure

    Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Ionisation cur- Fault F4 Check the ionisa- rent builds tion current, (higher than check the elec- 4 µA) trode adjustment Symbol A and the gas pipe for airlocks. Burner operates Stops below set Check flue gas boiler water tem-...
  • Page 25 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) 4. Record the static pressure and record it in the service report on page 121. Set value: max. 57.5 mbar 5. Start up the boiler. Note During commissioning, the boiler can enter a fault state because of airlocks in the gas pipe.

  • Page 26: Checking The Nozzle Pressure

    Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) 8. Switch OFF the system at the con- 9. Open the gas shut‐off valve and trol unit (the boiler shuts down), start the boiler. close the gas shut‐off valve, remove the pressure gauge and Danger close test port A with the screw.
  • Page 27 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) 6. Test the nozzle pressure at the 8. Select the lower rated output. upper rated output. In case of Constant temperature control deviations from the value unit: K + d press simultaneously: shown in the following table, adjust the nozzle pressure for the "1"...

  • Page 28: Setting The Maximum Output

    Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Rated output kW 10.5 44.6 MJ/m 21.3 kWh/m 0.89 mbar 3.3 14.8 22.6 76.8 MJ/m 10. Snap cap B into place. 14. Open the gas shut‐off valve and start the boiler. 11.

  • Page 29: Testing The Balanced Flue System (Annular Gap Test) For Soundness

    Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) 3. Record the setting for maximum output on the additional type plate supplied with the "Technical docu- mentation". Affix the type plate next to the type plate on top of the boi- ler.
  • Page 30 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) 1. Switch ON the control unit and call up the relay test: Constant temperature control unit: K + d press simultaneously for at least 2 s press, until "5" is dis- played.

  • Page 31: Checking And Cleaning The Burner

    Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Checking and cleaning the burner A Fixing screws E Control B Plug‐in connection F Combustion chamber cover C Burner G Combustion chamber frame D Ignition unit H Cover 1. Switch OFF the ON/OFF switch 3.
  • Page 32 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) 10. Remove fixing screws A and 5. Unscrew the combustion chamber frame G. remove burner C. 6. Unscrew the combustion chamber 11. Clean the burner, if necessary, cover F. with compressed air or with a soapy solution.

  • Page 33: Checking And Cleaning The Flue Gas Heat Exchanger

    Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Checking and cleaning the flue gas heat exchanger 1. Pull the plug from boiler water tem- perature sensor B and tempera- ture limiter C. 2. Release the plug‐in connection clip A from the connecting pipe and release fitting D.

  • Page 34: Checking The Ignition And Ionisation Electrodes

    Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Checking the ignition and ionisation electrodes A Ignition electrodes B Ionisation electrode C Fixing screws 1. Check ignition A and ionisation 2. Clean the ignition electrodes with a electrodes B for wear and con- small brush or emery paper.

  • Page 35: Flow Limiter

    Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) 3. Check gaps. Replace the electro- 4. Secure the combustion chamber des, if the gaps are not as specified cover. or the electrodes are damaged. Tighten the electrode fixing screws C with 2 Nm.

  • Page 36: Checking The Diaphragm Expansion Vessel And System Pressure

    Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Checking the diaphragm expansion vessel and system pres- sure 1. Pull the cables off pressure switch A. 2. Secure cover B. 3. Check the diaphragm expansion vessel inlet pressure at test port C and recharge, if required.
  • Page 37 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Flue gas emissions test 1. Connect the flue gas analyser to test port A. 2. Open the gas shut‐off valve. Start up the boiler. 3. Select the lower rated output. Constant temperature control unit: K + d press simultaneously:...
  • Page 38 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) 7. Check the CO or O and CO con- If the actual value falls outside the tent. Record actual values in the permissible range, check the follow- service report on page 121. ing: &...
  • Page 39 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) 4. Press d – 5. Record the actual value in the ser- Operation with the upper rated out- vice report on page 121. put is terminated. Matching the control unit to the heating system Note The control unit must be matched to the system equipment.
  • Page 40 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) System version 2 One heating circuit without mixer A1, one heating circuit with mixer M2 and system separation Outside temperature sensor Extension kit for a heating circuit (only for weather‐compensated with mixer control units) Plate‐type heat exchanger for...
  • Page 41 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) System version 3 One heating circuit without mixer A1, one directly connected underfloor heating circuit (injection control) with controller without auxiliary power (three‐way version) ! Outside temperature sensor (only A Max.
  • Page 42 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Required coding Internal extension (accessories) 53:2 System version 4 One heating circuit without mixer A1, one heating circuit with mixer M2 and low loss header Outside temperature sensor Power supply aVG KM BUS (only for weather‐compensated control units)
  • Page 43 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Adjusting the heating curves (only for weather‐compensated control units) The heating curves illustrate the rela- The room temperature, again, tionship between the outside tem- depends on the boiler water or the perature and the boiler water or the flow temperature.
  • Page 44 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Changing slope and level 1. Change the slope with coding address "d3" in code 1 (see page 50). Adjustable value 2 to 35 (equals slope 0.2 to 3.5). 2. Change the level in coding address "d4"...
  • Page 45 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Adjusting the set room temperature Standard room temperature Press the following keys: 1. a "1r" flashes in the display 2. d to select heating circuit A1 (heating circuit without mixer) 3.
  • Page 46 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Reduced room temperature Press the following keys: 1. a "1r" flashes in the dis- play 2. d to select heating circuit A1 (heating circuit without mixer) 3. a "2r" flashes in the dis- play Example 2: Adjustment of the reduced 4.
  • Page 47 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Updating the LON user list Note Only possible, if all users are connected and the control unit is programmed to be fault manager (code "79:1"). 2. e Press the following keys: The user list is updated after approx.
  • Page 48 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Implementing a user check (in conjunction with the LON sys- tem with a weather‐compensated control unit) Communication with the system devices connected to the fault manager is tested with a user check. Preconditions: &...
  • Page 49 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Scanning and resetting the "maintenance" display The red fault indicator flashes when the limits set via coding address "21" and "23" have been reached. As regards the programming unit display: &...

  • Page 50: Coding Code 1

    Coding Code 1 Calling up code 1 2. a/b Note for the required coding On weather‐compensated control address; the address units, codes are displayed as plain flashes text. Codes which are irrelevant (due 3. d to the system equipment level or the to confirm setting of other codes) will not be dis- 4.
  • Page 51 Coding Code 1 (cont.) Coding in the delivered condition Possible change Max. boiler temp. 06:... Maximum limit of the 06:20 Maximum limit of the boi- boiler water tempera- ler water temperature ture, defaulted in °C by 06:127 within the ranges de- the boiler coding card faulted by the boiler Gas type...

  • Page 52: Code

    Coding Code 1 (cont.) Coding in the delivered condition Possible change Slope A1/M2 d3:14 Heating curve slope = d3:2 Heating curve slope ad- 1.4 (only for weather‐ justable from 0.2 to 3.5 compensated control d3:35 (see page 43) units) Level A1/M2 d4:0 Heating curve slope = 0 d4:–13...
  • Page 53 Coding Code 2 (cont.) Function area Coding addresses System design Boiler/burner 06 to 54 Hot water 56 to 73 General 76 to 9F Heating circuit A1 (heating circuit without A0 to F7 mixer) Heating circuit M2 (heating circuit with A0 to F7 mixer) Note For heating systems with one heating circuit without mixer and one heating cir-...
  • Page 54 Coding Code 2 (cont.) Coding in the delivered condition Possible change 24:0 No "Maintenance" dis- 24:1 "Maintenance" display play (the address is automati- cally set and should be manually reset after a service has been carried out) i: No outside tem- 25:0 25:1 Outside temperature sen-...
  • Page 55 Coding Code 2 (cont.) Coding Internal cir- Heating circuit Heating circuit pump culation pump Heating circuit with pump Heating circuit mixer without mixer Control funct. Coding in the delivered condition Possible change Boiler/burner 34:0 Influence of the signal 34:1 Influence of the signal "External demand"...
  • Page 56 Coding Code 2 (cont.) Coding Internal circula- Heating circuit Heating circuit tion pump pump pump Heating circuit Heating circuit with without mixer mixer Control funct. Control funct. Coding in the delivered condition Possible change Boiler/burner 52:0 Without flow tempera- 52:1 With flow temperature ture sensor for low loss sensor for low loss head-...
  • Page 57 Coding Code 2 (cont.) Coding in the delivered condition Possible change 79:0 The control unit is not 79:1 Control unit is fault man- the fault manager (only ager for weather‐compen- sated control units) 7b:1 Without LON communi- 7b:0 Do not send time via LON cation module (only for weather‐compensated control units)
  • Page 58 LON BUS to any connected Vi- totronic 050. 98:1 Viessmann system 98:1 System number adjusta- number (in conjunction ble from 1 to 5 with monitoring of sev-...
  • Page 59 Coding Code 2 (cont.) Coding in the delivered condition Possible change 9C:20 Monitoring LON users. 9C:0 No monitoring If a user fails to re- 9C:5 The time is adjustable spond, the values de- from 5 to 60 min faulted by the control 9C:60 unit will be used after 20 min.
  • Page 60 Coding Code 2 (cont.) Coding in the delivered condition Possible change A3:5 Outside temperature A3:–9 Heating circuit pump below 4 °C: Heating cir- "ON/OFF", see the fol- cuit pump "ON" A3:15 lowing table Outside temperature above 6 °C: Heating cir- cuit pump "OFF"...
  • Page 61 Coding Code 2 (cont.) Coding in the delivered condition Possible change Boiler circuit, mixer circuit A4:0 With frost protection A4:1 No frost protection; this (only for weather‐com- setting is only possible if pensated control units) code "A3:‐9" has been selected. Note Observe the note for code "A3".
  • Page 62 Coding Code 2 (cont.) Coding in the delivered condition Possible change Boiler circuit, mixer circuit A6:36 Extended economy A6:5 Extended economy func- function disabled (only tion enabled, i.e. the bur- for weather‐compen- A6:35 ner and heating circuit sated control units) pump will be switched OFF and the mixer will be closed at a variable...
  • Page 63 Coding Code 2 (cont.) Coding in the delivered condition Possible change A9:7 With pump idle time: A9:0 Without pump idle time Heating circuit pump A9:1 With pump idle time, ad- "OFF" when the set justable from 1 to 15 value changes through A9:15 a change in operating mode or through a...
  • Page 64 Coding Code 2 (cont.) Parameter ad- With heating circuit pump logic function: dress b5:... Heating circuit pump "OFF" Heating circuit pump "ON" > RT + 5 K < RT + 4 K Actual Actual > RT + 4 K < RT + 3 K Actual Actual...
  • Page 65 Coding Code 2 (cont.) Coding in the delivered condition Possible change E1:1 With remote control: E1:0 Set day temperature ad- The set day tempera- justable from 3 to 23 °C ture is adjustable at the E1:2 Set day temperature ad- remote control unit from justable from 17 to 37 °C 10 to 30 °C (only for...
  • Page 66 Coding Code 2 (cont.) Coding in the delivered condition Possible change E9:20 Speed of the external E9:0 Speed adjustable from 0 variable speed heating to 100 % of maximum circuit pump: 20 % of E9:100 speed during operation the maximum speed in with reduced room tem- reduced temperature perature...
  • Page 67 Coding Code 2 (cont.) Coding in the delivered condition Possible change Mixer circuit F1:0 Screed function dis- F1:1 Screed drying function abled (only for weather‐ adjustable in accordance compensated control F1:5 with five optional tem- unit). perature/time profiles (see page 106) Note Observe the screed sup- plier's instructions.
  • Page 68 Coding Code 2 (cont.) Coding in the delivered condition Possible change F2:8 Time limit for party F2:0 No time limit for party mode 8 h or external mode heating mode change- F2:1 Time limit adjustable from over via the keypad 1 to 12 h (only for weather‐com- F2:12...

  • Page 69: Resetting Codes To The Delivered Condition

    Coding Code 2 (cont.) Coding in the delivered condition Possible change F9:–14 Temperature limit for F9:+10 Temperature limit adjus- table from +10 to ‐60 °C raising the reduced set room temp. ‐14 ºC, see F9:–60 example on page 108. (only for weather‐com- pensated control units) FA:20 Raising the set boiler...

  • Page 70: Service Scans Service Level Summary

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

  • Page 71: Temperatures, Boiler Coding Card And Brief Scans

    Service scans Temperatures, boiler coding card and brief scans Weather–compensated control unit 4. d Press the following keys: to select heating circuit with mixer M2 1. a "1r" flashes 5. K + G simultaneously for 2. d to select heating circuit approx.
  • Page 72 Service scans Temperatures, boiler coding card and brief scans (cont.) Display screen Brief scan System designs 1 Number Maximum demand temperature to 6 of KM Display in accor- dance with the sys- users tem equipment level 0: no KM user Flow Software Software...
  • Page 73 Service scans Temperatures, boiler coding card and brief scans (cont.) Display screen Brief scan Internal circulation Heating circuit pump pump to connec- tion extension Variable Software Variable Software speed version speed version pump variable pump variable 0: w/o speed 0: w/o speed 1: Wilo pump...
  • Page 74 Service scans Temperatures, boiler coding card and brief scans (cont.) The following values can be scanned, subject to the actual equipment level: Display screen Brief scan Flow System de- Software version Software switch po- signs 1 to 6 Control version sition Display in Program-...

  • Page 75: Testing Outputs (Relay Test)

    Service scans Testing outputs (relay test) Weather–compensated control unit 4. d Press the following keys: to select heating circuit with mixer M2 1. a "1r" flashes 5. K + d simultaneously for 2. d to select heating circuit approx. 2 s without mixer A1 6.

  • Page 76: Scanning Operating Conditions And Sensors

    Service scans Testing outputs (relay test) (cont.) Display screen Explanation Internal pump / output 20 "ON" Heating mode diverter valve Centre position, valve DHW valve Output sK internal extension Heating circuit pump A1 external extension Central fault external extension Scanning operating conditions and sensors Weather–compensated control unit 3.
  • Page 77 Service scans Scanning operating conditions and sensors (cont.) Display screen Explanation Burner, ...h Actual hours run Burner starts, ... Hours run and burner starts (reset to "0" after maintenance, using e). Time Date Burner OFF/ON Int. pump OFF/ON Output 20 Int.

  • Page 78: Troubleshooting Fault Display

    Troubleshooting Fault display Fault display design A Fault display C Fault number B Fault symbol D Fault code The red fault indicator flashes for every fault. A fault in the burner control unit causes the display to show "E". Constant temperature control units In case of faults, the fault code and fault symbol will be displayed at the programming unit...
  • Page 79 Troubleshooting Fault display (cont.) & Room temperature sensor & User fault Checking and acknowledging faults Note If an acknowledged fault is not removed, the fault message will be re‐displayed after 24 h. Constant temperature control units 2. d Press the following keys: all fault messages are acknowledged simulta- 1.

  • Page 80: Calling Up Fault Codes From The Fault Memory (Fault History)

    Troubleshooting Calling up fault codes from the fault memory (fault history) 1. G + d press simultaneously for The 10 most recent faults are saved and may be scanned. approx. 2 s The faults are ordered according to 2. a/b date, thus the most recent fault is fault press for individual fault number 1.
  • Page 81 Troubleshooting Fault codes (cont.) Display Const. Weath.‐ System char- Cause Remedy fault comp. acteristics code Burner Boiler water Check the boiler blocked temperature water tempera- sensor ture sensor (see shorted out page 91) Burner Boiler water Check the boiler blocked temperature water tempera- sensor lead...
  • Page 82 Troubleshooting Fault codes (cont.) Display Const. Weath.‐ System char- Cause Remedy fault comp. acteristics code Regulates as Internal fault Replace control if the outside unit temperature was 0 °C Regulated op- Internal fault Replace the con- eration as per trol unit delivered con- dition Burner...
  • Page 83 Troubleshooting Fault codes (cont.) Display Const. Weath.‐ System char- Cause Remedy fault comp. acteristics code Regulated op- Communica- Check coding ad- tion fault ‐ eration, max. dress "E5" set- pump speed external vari- tings; check the able speed DIP switch set- heating cir- tings in the pump cuit pump,...
  • Page 84 Troubleshooting Fault codes (cont.) Display Const. Weath.‐ System char- Cause Remedy fault comp. acteristics code Regulated op- Room tem- Check the room eration without perature temperature sen- room influence sensor, heat- sor, heating cir- ing circuit A1 cuit A1 and the lead broken remote control DIP switch set-...
  • Page 85 Troubleshooting Fault codes (cont.) Display Const. Weath.‐ System char- Cause Remedy fault comp. acteristics code Burner control Flame signal Check the ionisa- unit fault is already tion electrode and present at connecting leads; burner start press "E" Burner control No flame sig- Check the ionisa- unit fault nal.
  • Page 86 Troubleshooting Fault codes (cont.) Display Const. Weath.‐ System char- Cause Remedy fault comp. acteristics code Burner control Fan speed Check the fan, fan unit fault too low dur- connecting ing burner cables, fan power start supply and con- trol; press "E" Burner control Fan not at Check fan, fan...
  • Page 87 Troubleshooting Fault codes (cont.) Display Const. Weath.‐ System char- Cause Remedy fault comp. acteristics code Burner Internal fault If equipment will blocked not restart, re- move the EMC field, check the boiler coding card and replace it or the control unit, if required...

  • Page 88: Repairs

    Troubleshooting Repairs Checking the plate‐type heat exchanger A Control F Cold water B Comfort sensor G Heating return C Plate‐type heat exchanger K Heating flow D Screws H Hot water E Thermal insulation 1. Shut off and drain the boiler on the 2.
  • Page 89 Troubleshooting Repairs (cont.) 3. Pull the leads off comfort 7. Check the primary connections for sensor B. contamination and, if necessary, flush via central heating return G 4. Remove thermal insulation E. (flushing system for plate‐type heat exchanger, see pricelist). 5.
  • Page 90 Troubleshooting Repairs (cont.) 1. Pull plug "X3" off the control unit. 2. Test the resistance of the outside temperature sensor across term- inals "X3.1" and "X3.2" on the dis- connected plug and compare it with the curve. 3. Where actual values strongly devi- ate from the curve values, discon- nect the wires at the sensor and repeat the test directly at the sen-...
  • Page 91 Troubleshooting Repairs (cont.) Checking the boiler temperature sensor, comfort sensor or flow temperature sensor for the low loss header A Boiler water temperature sensor % Comfort sensor plug...
  • Page 92 Troubleshooting Repairs (cont.) & Boiler water temperature sen- Pull the leads off the boiler tem- perature sensor and check the resistance. & Comfort sensor Pull the plug % out of the cable harness on the control unit and measure the resistance. &...
  • Page 93 Troubleshooting Repairs (cont.) Checking the outlet temperature sensor 1. Pull the leads off the outlet tem- perature sensor. A Outlet temperature sensor 2. Check the sensor resistance and compare it with the curve. 3. Replace the sensor in case of severe deviation.
  • Page 94 Troubleshooting Repairs (cont.) 1. Pull the leads off the temperature limiter. 2. Check the continuity of the tem- perature limiter with a multimeter. 3. Remove the faulty temperature lim- iter. 4. Coat the replacement temperature limiter with heat conducting paste and install.
  • Page 95 Troubleshooting Repairs (cont.) Checking the fuse A Cover 1. Switch OFF the mains power. 3. Remove the cover. 2. Release the lateral closures and 4. Check fuse F1 (see connection and pivot the control unit down. wiring diagram).
  • Page 96 Troubleshooting Repairs (cont.) Extension kit for heating circuit with mixer Checking the rotational direction of 2. Note the rotational direction of the the mixer motor mixer motor during its self‐test. Then set the mixer manually to "Open" again. Note The flow temperature sensor must now sense a higher temperature.
  • Page 97 Function description Constant temperature control unit Controls and display elements A Pressure gauge E Control panel: B Fault indicator (red) Set boiler water tem- C ON indicator (green) perature D Reset button Set DHW temperature O+F Emissions test function Standby mode DHW only Heating and DHW Comfort mode...

  • Page 98: Function Description Constant Temperature Control Unit

    Function description Constant temperature control unit (cont.) DHW heating If the flow switch recognises that The burner modulates to reach the DHW is drawn off (> 3 l/min), the bur- DHW outlet temperature and is limited ner and circulation pump are switched on the boiler side by the temperature ON and the three‐way valve changes limiter (85 °C).
  • Page 99 Function description Weather–compensated control unit (cont.) E Control panel: F Rotary selector for the standard Time program, central room temperature G ON/OFF switch heating Time program DHW heating/DHW circulation pump (if connected to the control unit) Holiday program Date/time Reduced room tempera- ture Set DHW temperature O+F Emissions test function...

  • Page 100: Extension For External Connections (Accessories)

    Function description Weather–compensated control unit (cont.) DHW heating If the flow switch recognises that The burner modulates to reach the DHW is drawn off (> 3 l/min), the bur- DHW outlet temperature and is limited ner and circulation pump are switched on the boiler side by the temperature ON and the three‐way valve changes limiter (85 °C).
  • Page 101 Function description Extension for external connections (accessories) (cont.) & The internal extension is integrated Central fault message (code 53:0) & into the control unit housing. The fol- Heating circuit pump for a heating lowing alternative functions can be circuit without mixer (code 53:2) connected to relay output sK.
  • Page 102 Function description Extension for external connections (accessories) (cont.) External extension H1 & The external extension is connected External blocking (terminals 2 ‐ 3) to the boiler control unit via the KM & BUS. The following functions can be External demand (terminals 1 ‐...
  • Page 103 Function description Extension for external connections (accessories) (cont.) External extension H2 & The external extension is connected External blocking (terminals 2 ‐ 3) to the boiler control unit via the KM & BUS. The following functions can be External demand (terminals 1 ‐...

  • Page 104: Control Functions

    Function description Control functions External heating program changeover The "External heating program changeover" function is connected via the exter- nal extension input "aVD". Coding address "91" enables the selection, which heating circuits the heating program changeover should affect: The heating program changeover affects: Coding No changeover 91:0...
  • Page 105 Function description Control functions (cont.) External demand The "External demand" function is In coding address "9b", you can select connected via the external extension the minimum set boiler water tem- input "aVD". perature in case of external demand. In coding address "34" you can select the influence the signal "External demand"...
  • Page 106 Function description Control functions (cont.) Screed function The screed function enables screeds You can select various temperature to be dried. For this, always observe profiles. the details specified by the screed manufacturer. Temperature profile: Diagram 1 (DIN 4725 part 4) code F1:1 Temperature profile: Diagram 2 (ZV parquet and flooring technology) code F1:2 Temperature profile: Diagram 3 code F1:3...
  • Page 107 Function description Control functions (cont.) Temperature profile: Diagram 4 code F1:4 Temperature profile: Diagram 5 code F1:5 Temperature profile: Factory setting code F1:6...
  • Page 108 Function description Control functions (cont.) Raising the reduced room temperature During operation with reduced room The outside temperature limits for the temperature, the reduced set room start and end of the temperature rais- temperature can be automatically ing can be adjusted via the coding raised subject to outside temperature.
  • Page 109 Function description Control functions (cont.) Reducing the heat‐up time During the transition from operation The value and duration for the addi- with reduced room temperature into tional increase of the set boiler water operation with standard room tem- temperature or flow temperature can perature, the boiler water or flow tem- be adjusted in the coding addresses perature will be raised in accordance...

  • Page 110: Remote Control Dip Switch

    Function description Remote control DIP switch The DIP switches are located on the PCB in the top part of the housing. Remote control DIP switch set- affects ting Heating circuit without mixer A1 Heating circuit with mixer M2 When connecting a separate room temperature sensor, set DIP switch "3"...

  • Page 111: Connection And Wiring Diagram – Internal Connections

    Designs Connection and wiring diagram – internal connections...
  • Page 112 Designs Connection and wiring diagram – internal . . . (cont.) § Boiler water temperature sen- Ignition unit a-Ö Fan motor for burner a-ÖA Fan control Outlet temperature sensor Comfort sensor Gas pressure switch Ionisation electrode Air pressure switch dÖ Stepper motor for diverter Flow switch a:Ö...

  • Page 113: Connection And Wiring Diagram – External Connections

    Designs Connection and wiring diagram – external connections Main PCB Power supply unit...
  • Page 114 Designs Connection and wiring diagram – external . . . (cont.) Optolink Flow temperature sensor, low Burner control unit loss header Programming unit Cylinder temperature sensor sÖ Coding card Internal circulation pump Connection adaptor Gas solenoid valve fÖ LON communication module Power supply (Vitotronic 200) Power supply accessories and...

  • Page 115: Parts Lists

    Parts lists Parts lists When ordering spare parts Quote the part and serial no. (see type plate) and the item no. of the required part (as per this parts list). Obtain standard parts from your local supplier. 001 Temperature sensor 038 Gas manifold natural gas E 002 Temperature limiter 039 Gas manifold natural gas LL...
  • Page 116 Parts lists Parts lists (cont.) 110 Outside temperature sensor 058 Installation and service instruc- 114 Access guard tions 097 Cable harness X8/X9/auxiliary Wearing parts earth 005 Ionisation electrode 099 Linear stepper motor connecting 006 Ignition electrode cable 100 Ionisation cable with strain relief Parts not shown 101 Internal ionisation lead 021 Fastenings...
  • Page 117 Parts lists Parts lists (cont.)
  • Page 118 Parts lists Parts lists (cont.)
  • Page 119 Parts lists Parts lists (cont.)
  • Page 120 Parts lists Parts lists (cont.)

  • Page 121: Commissioning/Service Reports

    Commissioning/service reports Commissioning/service reports Setting and test values Set value Initial Mainte- start‐up nance/ser- vice Date: Static pressure mbar max. 57.5 mbar Supply pressure (flow pressure) = for natural gas E mbar 17.4‐ 57.5 mbar = for natural gas LL mbar 17.4‐...

  • Page 122: Specification

    Specification Specification Rated voltage 230 V~ Electronic tempera- Rated frequency 50 Hz~ ture limiter setting: Rated current 6 A~ & during heating Protection class operation 84 °C Protection IP X 4 D to & for DHW heating 85 °C EN 60529 Temperature limiter Permissible ambient temperatures setting...
  • Page 123 Specification Specification (cont.) Product characteristics (to EnEV [Germany]) Rated output range for central heating 10.5‐24 Efficiency µ at & 100 % of rated output 92.0 & 30% of rated output 91.3 Standby loss q B,70 Power consumption & 100 % of rated output &...

  • Page 124: Certificates Declaration Of Conformity

    Certificates Declaration of conformity Declaration of Conformity for Vitopend 200 We, Viessmann Werke GmbH & Co KG, D‐35107 Allendorf, confirm as sole responsible body that the product Vitopend 200 complies with the following standards: DIN EN 297 DIN EN 55 014 DIN EN 60 335 DIN EN 61 000‐3‐2...
  • Page 125 Certificates Manufacturer's certificate according to the 1st . . . (cont.) Allendorf 14.06.05 Viessmann Werke GmbH&Co KG pp. Manfred Sommer...

  • Page 126: Keyword Index

    Keyword index Keyword index Acknowledging a fault display Fault codes ........Adjusting the room temperature Fault display design .
  • Page 127 Keyword index Keyword index (cont.) Outlet temperature sensor Safety chain ..........Outside temperature sensor Scanning operating conditions .
  • Page 128 Gas fired combi boiler Type WHKA Balanced flue operation 10.5 to 24 kW Serial number 7193 085 ... Viessmann Werke GmbH&Co KG Viessmann Limited D-35107 Allendorf Hortonwood 30, Telford Telefon: +49 6452 70-0 Shropshire, TF1 7YP, GB Telefax: +49 6452 70-2780 Telephone: +44 1952 675000 www.viessmann.de...

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