Service instructions VIESMANN for contractors Vitodens 200-W Type WB2C Wall mounted gas condensing boiler 4.8 to 35 kW natural gas and LPG version Gas Council no.: 41-819-14; 41-819-15; 41-819-16; 41-819-17 (system boilers) 47-819-09; 47-819-10; 47-819-11 (combi boilers) For applicability, see the last page VITODENS 200-W 5692 857 GB 4/2010 Please keep safe.
Safety instructions Safety instructions Please follow these safety instructions closely to prevent accidents and material losses. Safety instructions explained Danger This symbol warns against the risk of injury. ! Please note This symbol warns against the risk of material losses and environmental pollution. Note Details identified by the word "Note" contain additional information.
Safety instructions Safety instructions (cont.) If you smell flue gas Danger Flue gas can lead to life-threatening poisoning. ■ Shut down the heating system. ■ Ventilate the boiler room. ■ Close all doors leading to the living space. Working on the system ■ When using gas as fuel, also close the main gas shut-off valve and safeguard against unauthorised reopening. ■ Isolate the system from the power supply and check that it is no longer 'live', e.g.
Index Index Commissioning, inspection, maintenance Steps - commissioning, inspection and maintenance.......................................... Further details regarding the individual steps....................................................... 6 8 Code 1 Calling up coding level 1...................................................................................... General/Group 1................................................................................................... Boiler/Group 2............
Index Index (cont.) Parts lists............................................................................................................ 138 Commissioning/service reports........................................................................ 144 Specification....................................................................................................... 145 Certificates Declaration of conformity......................................................................................
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 • • • 1. Filling the heating system.............................................. 8 2. Checking power supply connection 3. Selecting the language (if required) - only for weathercompensated control units............................................ 9 9 • • 4.
Commissioning, inspection, maintenance Steps - commissioning, inspection and… (cont.) Commissioning steps Inspection steps Maintenance steps • • • • • • • • • 20. Cleaning the heat exchanger and installing the burner.............................................................................. 21 • • 21. Checking the condensate drain and cleaning the siphon.............................................................................. 23 • • • 22.
Commissioning, 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 it with water. ■ Only use fill water of potable quality. ■ Soften fill water with hardness exceeding 300 ppm (3.0 mol/m3), e.g. using a small softening system for heating water (see Viessmann Vitoset pricelist).
Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) 4. If the control unit had already been switched ON before filling began: Switch control unit ON and activate filling function (see next chapter). 4. Ending filling function: Press OK or ä. Activating filling function with constant temperature control units: 5. Close boiler drain & fill valve A. Activating filling function with weather-compensated control units: 1. Press OK and å simultaneously for approx. 4 s.
Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Setting the time and date (if required) - for constant temperature control units The time and date need to be reset during commissioning or after prolonged time out of use. After starting the system, the display flashes the time ( ). 2. OK to confirm; the new time unit is saved, appears. Press the following keys: 4. OK to confirm; the new date is saved. 1. / 3. / for the required date.
Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) 4. Close valves A and B, remove the filling equipment and open the shutoff valves on the heating water side. Venting the heating system 1. Close the gas shut-off valve and switch the control unit ON. 2. Activate venting program (see next steps). Note For function and sequence of the venting program, see page 126. 3. "Venting" 4. Terminating venting program: Press OK or ä.
Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Filling the siphon with water B A 1. Remove retaining clip A and siphon B. 2. Fill siphon B with water. 3. Fit siphon B and secure with retaining clip A. Designating heating circuits – only for weather-compensated control units In the delivered condition, the heating circuits are designated "Heating circuit 1", "Heating circuit 2" and "Heating circuit 3" (if installed).
Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) 1. Determine the gas type and Wobbe index by asking your local gas supply utility or LPG supplier. 3. Record the gas type in the service report on page 144. 2. Convert the burner for operation with LPG (see page 13). Gas type conversion (only for operation with LPG) 1. Set adjusting screw A at the gas train to "2". 1 A 2. Turn ON/OFF switch 8 ON. 2 3.
Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) yes Fan starts no After approx. 51 s fault F9 Check the fan, fan connecting cables, power at the fan and fan control no Fault EE Check the ignition module (control voltage 230 V across plugs "X2.1" and "X2.
Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) yes Automatic calibration of the combustion controller no Fault Eb Initiate a heat draw-off. Switch the boiler OFF and ON again. Press reset button R. For further fault details, see page 91. Checking the static and supply pressure Danger CO build-up as a result of an incorrect burner setup can have serious health implications. Carry out a CO test prior to and after work on gas equipment.
Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) 6. Check the supply (flow) pressure. A Set value: ■ Natural gas: 20 mbar ■ LPG: 37 mbar Note Use suitable test equipment with a resolution of at least 0.1 mbar to measure the supply pressure. 7. Record the actual value in the service report on page 144. Take the action shown in the following table. 8.
Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Supply pressure (flow pressure) for natural gas for LPG below 17.4 mbar below 25 mbar 17.4 to 25 mbar above 25 mbar 25 to 47 mbar above 47 mbar Measures Do not start the boiler. Notify your gas supply utility or LPG supplier. Start the boiler. Install a separate gas pressure governor upstream of the system and regulate the supply pressure to 20 mbar for natural gas or 37 mbar for LPG.
Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Checking the balanced flue system tightness (annular gap check) A A Combustion air aperture We recommend that your heating engineer carries out a simple leak/tightness test during the commissioning of your system. For this, it would be sufficient to check the CO2 or O2 concentration in the combustion air at the annular gap of the balanced flue pipe.
Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Burner removal G 4x E F D C B A 1. Switch OFF the main power supply and the ON/OFF switch at the control unit. 2. Close the gas shut-off valve and safeguard against reopening. 3. Pull cables from fan motor A, gas train B, ionisation electrode C, ignition unit D and earth tab E. 4. Release gas supply pipe fitting F. 5. Undo four screws G and remove the burner.
Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) B F 1. Remove electrodes B. 2. Undo three retaining clips C at thermal insulation ring D and remove thermal insulation ring D. E D A C 3x 4. Insert and secure a new burner gauze assembly E with a new gasket F. Torque: 3.5 Nm. 5. Refit thermal insulation ring D. 6. Refit electrodes B. Torque: 4.5 Nm. 5692 857 GB 3. Undo four Torx screws and remove burner gauze assembly E with its gasket F.
Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Checking and adjusting the ignition and ionisation electrodes 6 +20 10 ±1 A 4 +0,5 0 A B A Ignition electrodes B Ionisation electrode 1. Check the electrodes for wear and contamination. 3. Check the electrode gaps. If the gaps are not as specified or the electrodes are damaged, replace the electrodes together with new gaskets and adjust them as required. Tighten the electrode fixing screws with 4.5 Nm.
Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) A 1. Use a vacuum cleaner to remove residues from heat exchanger A inside the combustion chamber. 2. If required, spray slightly acidic, chloride-free cleaning agents based on phosphoric acid (e.g. Antox 75 E) onto heat exchanger A and let the solution soak in for approx. 20 min. 3. Thoroughly flush heat exchanger A with water. 4. Install the burner and torque the screws diagonally with 8.5 Nm. 5.
Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Checking the condensate drain and cleaning the siphon B A 1. Check that the condensate can drain freely at the siphon. 2. Remove retaining clip A and siphon B. 3. Clean siphon B. 5692 857 GB 4. Fill siphon B with water and fit it to the boiler. Position retaining clip A.
Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Checking the flow limiter (only for gas combi boilers) 1. Switch OFF the control unit, shut off the cold water line and drain the DHW side of the boiler. 2. Undo Allen screws A. Note Residual water may escape during dismantling. 3. Remove flow switch B and take out flow limiter C downwards. C 4. Check flow limiter C; replace in case of excessive scaling or damage. Refit flow switch B.
Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Checking all gas equipment for tightness at operating pressure Danger Escaping gas leads to a risk of explosion. Check gas equipment for tightness. Note For the tightness test, use only suitable and approved leak detecting agents (EN 14291) and devices. Leak detecting agents with unsuitable constituents (e.g. nitrites, sulphides) can lead to material damage.
Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) A Selecting the upper/lower output for weather-compensated control units: 1. Press OK and å simultaneously for approx. 4 s. 2. "Actuator test" 3. Select the lower output: "Base load start" and confirm with OK. 2. Open the gas shut-off valve, start the boiler and create a heat demand. 3. Select the lower output (see page 26). 4. Check the CO2 content.
Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Matching the control unit to the heating system Subject to the equipment level, the control unit must be matched to the system. Various system components are recognised automatically by the control unit and the relevant codes are adjusted automatically. ■ For the selection of an appropriate scheme, see the following diagrams. ■ For coding steps, see page 39.
Commissioning, inspection, maintenance Further details regarding the individual steps (cont.
Commissioning, inspection, maintenance Further details regarding the individual steps (cont.
Commissioning, inspection, maintenance Further details regarding the individual steps (cont.
Commissioning, inspection, maintenance Further details regarding the individual steps (cont.
Commissioning, inspection, maintenance Further details regarding the individual steps (cont.
Commissioning, inspection, maintenance 35 Boiler water or flow temperature in °C 3 Se 0 t ro 1.6 1.8 2.0 2.8 Slope 2.6 2.4 2.2 3.0 90 3.4 3.2 Further details regarding the individual steps (cont.) 1.4 80 1.2 70 1.0 60 0.8 50 0.6 40 0.4 30 0.
Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Changing the slope and level 90 Adjusting the set room temperature Standard room temperature 3.5 Boiler water or flow temperature in °C 90 A 1.4 A B C 26 +2 0 B -20 0.2 +20 -20 Outside temperature in °C A Changing the slope B Changing the level (vertical parallel offset of the heating curve) Extended menu: 1.
Commissioning, inspection, maintenance Further details regarding the individual steps (cont.
Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Boiler control unit LON Subscriber no. 1 Code "77:1" Control unit is fault manager Code "79:1" Control unit transmits the time Code "7b:1" Control unit transmits outside temperature Set code "97:2" LON subscriber fault monitoring Code "9C:20" Vitotronic 200-H Vitotronic 200-H LON LON Subscriber no.
Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) 4. Select subscriber (e.g. subscriber 10). The subscriber check for the selected subscriber is introduced. ■ Successfully tested subscribers are designated with "OK". ■ Unsuccessfully tested subscribers are designated with "Not OK". Note If the subscriber check is carried out by another control unit, the subscriber number and "Wink" are shown on the display for approx. 1 min.
Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Constant temperature control unit Reset code 24:1 to 24:0. Note The selected service parameters for hours run and time interval restart at 0. Instructing the system user 5692 857 GB The system installer must hand the operating instructions to the system user and instruct him/her in the operation of the system.
Code 1 Calling up coding level 1 Calling up coding level 1 Note ■ On weather-compensated control units, codes are displayed as plain text. ■ Codes that have no function due to the heating system equipment level or the setting of other codes are not displayed.
Code 1 Calling up coding level 1 (cont.) 6. If you want to reset all codes to their delivered condition: Select Ú "7" and confirm with OK. When " " flashes, confirm with OK. Note This also resets codes from coding level 2. General/Group 1 "General" - select for weather-compensated control units (see page 39). "1" - select for constant temperature control units (see page 39).
Code 1 General/Group 1 (cont.) Value System address version 00: ...
Code 1 General/Group 1 (cont.) Coding in the delivered condition Possible change Detached house/apartment building 7F:1 Detached house (only for 7F:0 Apartment building weather-compensated Separate adjustment of control units) holiday program and time program for DHW heating, as option Lock out controls 8F:0 All control elements 8F:1 All control elements locked active out 8F:2 Only standard settings can be controlled Set flow temperature for ext.
Code 1 Boiler/Group 2 (cont.
Code 1 DHW/Group 3 (cont.) Coding in the delivered condition Enable DHW circulation pump 73:0 DHW circulation pump: "ON" according to time program (only for weather-compensated control units and gas condensing boilers) Possible change 73:1 to 73:6 73:7 "ON" from once per hour for 5 min up to 6 times per hour for 5 min during the time program Constantly "ON" Solar/Group 4 "Solar" - select for weather-compensated control units (see page 39).
Code 1 Solar/Group 4 (cont.) Coding in the delivered condition Reducing stagnation time 0A:5 To protect the system components and heat transfer medium, the speed of the solar circuit pump is reduced when the differential between the actual cylinder temperature and set cylinder temperature is less than 5 K. Nominal flow rate 0F:70 The flow rate in the collector circuit at the maximum pump speed is set to 7 l/min.
Code 1 Heating circuit 1, heating circuit 2, heating circuit 3/Group 5 "Heating circuit ..." - select for weather-compensated control units (see page 39). "5" - select for constant temperature control units (see page 39).
Code 1 Heating circuit 1, heating circuit 2, heating… (cont.) Coding in the delivered condition Summer eco function absolute A6:36 Extended economy function disabled (only for weather-compensated control units) 5692 857 GB Mixer eco function A7:0 Without mixer economy function (only for a weather-compensated control unit and heating circuit with mixer) Pump idle time transition red.
Code 1 Heating circuit 1, heating circuit 2, heating… (cont.
Code 1 Heating circuit 1, heating circuit 2, heating… (cont.
Code 1 Heating circuit 1, heating circuit 2, heating… (cont.
Code 1 Heating circuit 1, heating circuit 2, heating… (cont.) Coding in the delivered condition Pump control in "Standby mode" F7:25 In "Standby mode", the internal circulation pump is permanently ON (only for constant temperature control units) F7:0 F7:1 to F7:24 In "Standby mode", the internal circulation pump is permanently OFF In "Standby mode", the internal circulation pump will be started for 10 min each time 1 to 24 times per day.
Code 1 Heating circuit 1, heating circuit 2, heating… (cont.) 5692 857 GB Coding in the delivered condition Possible change Duration set flow temperature increase Fb:30 Duration for raising the Fb:0 Duration adjustable from 0 set boiler water tempera- to to 300 min; ture or the set flow tem- Fb:150 1 step ≙ 2 min perature (see coding address "FA") 60 min.
Code 2 Calling up coding level 2 Calling up coding level 2 Note ■ In coding level 2, all codes are accessible, including the codes from coding level 1. ■ Codes that have no function due to the heating system equipment level or the setting of other codes are not displayed.
Code 2 Calling up coding level 2 (cont.) 4. Select group of the required coding address with V/v. For example, "1" for group "General" (see following section): Confirm selected group with OK. 5. Select coding address with V/v. 7. If you want to reset all codes to their delivered condition: Select Ú "7" and confirm with OK. When " " flashes, confirm with OK. Note This also resets codes from coding level 1. 6. Select value according to the following tables with V/v and confirm with OK.
Code 2 General/Group 1 (cont.) Value System address version 00: ...
Code 2 General/Group 1 (cont.) Coding in the delivered condition 36:0 Function output aBJ at extension EA1: Fault message Function input DE1 at extension EA1: without function 5692 857 GB 3A:0 Possible change 36:1 Function output aBJ: Feed pump 36:2 Function output aBJ: DHW circulation pump 3A:1 Function input DE1: Heating program changeover 3A:2 Function input DE1: External demand with set flow temperature.
Code 2 General/Group 1 (cont.) Possible change 3b:1 Function input DE2: Heating program changeover 3b:2 Function input DE2: External demand with set flow temperature. Function internal circulation pump: Coding address 3F 3b:3 Function input DE2: External blocking.
Code 2 General/Group 1 (cont.) Coding in the delivered condition 3C:0 Function input DE3 at extension EA1: without function 3D:5 5692 857 GB 3E:0 DHW circulation pump runtime for short operation: 5 min Internal circulation pump stays in control mode at signal "External blocking" Possible change 3C:1 Function input DE3: Heating program changeover 3C:2 Function input DE3: External demand with set flow temperature.
Code 2 General/Group 1 (cont.
Code 2 General/Group 1 (cont.
Code 2 5692 857 GB General/Group 1 (cont.
Code 2 General/Group 1 (cont.
Code 2 Boiler/Group 2 (cont.) "2" - select for constant temperature control units (see page 53). Coding 5692 857 GB Coding in the delivered condition 01:1 Do not adjust (only for constant temperature control units) 04:1 Minimum burner pause subject to the boiler load (specified by boiler coding card) 06:...
Code 2 Boiler/Group 2 (cont.) Coding in the delivered condition 2F:0 Venting program/fill program disabled 30:1 Internal variable speed circulation pump (automatic adjustment) 31:... 38:0 Possible change 2F:1 Venting program enabled 2F:2 Fill program enabled 30:0 Internal circulation pump without variable speed (e.g.
Code 2 DHW/Group 3 (cont.) Coding in the delivered condition 5b:0 DHW cylinder directly connected to the boiler 5E:0 5F:0 60:20 62:2 63:0 5692 857 GB 65:...
Code 2 DHW/Group 3 (cont.) Coding in the delivered condition 67:40 For solar DHW heating: Set DHW temperature 40 °C. Reheating is suppressed above the selected set temperature (DHW heating blocked by the boiler). 6C:100 Set speed; internal circulation pump with DHW heating 100 % 6d:0 Draw-off function disabled (only for gas condensing combi boiler 6F:...
Code 2 Solar/Group 4 (cont.) Coding Coding in the delivered condition 00:8 The solar circuit pump starts when the collector temperature exceeds the actual cylinder temperature by 8 K. 01:4 02:0 The solar circuit pump stops when the differential between the collector temperature and the actual cylinder temperature is less than 4 K. Solar circuit pump is not speed-controlled 03:10 The temperature differential between the collector temperature and actual cylinder temperature is regulated to 10 K.
Code 2 Solar/Group 4 (cont.) Coding in the delivered condition 07:0 Interval function of the solar circuit pump switched OFF 08:60 09:130 0A:5 0b:0 5692 857 GB 0C:1 Possible change 07:1 Interval function of the solar circuit pump switched ON. To capture the collector temperature more accurately, the solar circuit pump starts for short cycles.
Code 2 5692 857 GB Solar/Group 4 (cont.) Coding in the delivered condition Possible change 0d:1 Night circulation monitor- 0d:0 Night circulation monitoring switched ON. ing switched OFF. Unintentional flow rate is captured in the collector circuit (e.g. at night).
Code 2 Solar/Group 4 (cont.) Coding in the delivered condition 12:20 Minimum collector temperature 20 °C. The solar circuit pump is not started until the minimum collector temperature set at the collector temperature sensor is exceeded.
Code 2 Solar/Group 4 (cont.) Possible change 23:2 Stop temperature differento tial for central heating 23:30 backup is adjustable from 1 to 29 K 24:0 to 24:100 Start temperature for thermostat function is adjustable from 0 to 100 K 5692 857 GB Coding in the delivered condition 23:4 Stop temperature differential for central heating backup: 4 K. Switching output sS is switched OFF when the temperature at sensor / falls below the stop point.
Code 2 Solar/Group 4 (cont.) Coding in the delivered condition 25:50 Stop temperature for thermostat function 50 °C. Start temperature for thermostat function ≤ stop temperature for thermostat function: Thermostat function e.g. for reheating. Switching output sS is switched OFF when the temperature at sensor / exceeds the start temperature for the thermostat function. Start temperature for thermostat function > stop temperature for thermostat function: Thermostat function e.g. for utilising excess heat.
Code 2 Solar/Group 4 (cont.) Coding in the delivered condition 27:15 Alternate heating time 15 min. The DHW cylinder without priority is heated at most for the duration of the set alternate heating time if the DHW cylinder with priority is heated up. 28:3 Alternate pause duration 3 min. After the set alternate heating time for the DHW cylinder without priority has expired, the rise in collector temperature is captured during the alternate heating time.
Code 2 Heating circuit 1, heating circuit 2, heating… (cont.
Code 2 Heating circuit 1, heating circuit 2, heating… (cont.) Coding in the delivered condition Possible change A4:0 With frost protection (only A4:1 No frost protection; this setfor weather-compensating is only possible if code ted control units) "A3:-9" has been selected.
Code 2 Heating circuit 1, heating circuit 2, heating… (cont.) A7:0 A8:1 A9:7 76 Possible change A6:5 Extended economy control to enabled, i.e. the burner and A6:35 heating circuit pump will be stopped and the mixer closed at a variable value, adjustable between 5 and 35 °C plus 1 °C. The base value is the adjusted outside temperature. This value is based on the actual outside temperature and a time constant that takes the cooling down of an average building into consideration.
Code 2 Heating circuit 1, heating circuit 2, heating… (cont.
Code 2 Heating circuit 1, heating circuit 2, heating… (cont.) Coding in the delivered condition C5:20 Electronic minimum flow temperature limit 20 °C (only for weather-compensated control units) C6:74 Electronic maximum flow temperature limit 74 °C (only for weather-compensated control units) d3:14 Heating curve slope = 1.
Code 2 Heating circuit 1, heating circuit 2, heating… (cont.
Code 2 Heating circuit 1, heating circuit 2, heating… (cont.
Code 2 Heating circuit 1, heating circuit 2, heating… (cont.) Coding in the delivered condition F6:25 In the "Only DHW" operating mode, the internal circulation pump is permanently ON (only for constant temperature control units) F7:25 F8:-5 5692 857 GB F9:-14 Possible change F6:0 In the "Only DHW" operating mode, the internal circulation pump is permanently OFF F6:1 In the "Only DHW" operatto ing mode, the internal cirF6:24 culation pump will be started for 10 min each time, 1 to 24 times per day.
Code 2 Heating circuit 1, heating circuit 2, heating… (cont.) Possible change FA:0 Temperature rise adjustato ble from 0 to 50 % FA:50 Fb:0 to Fb:150 Duration adjustable from 0 to 300 min; 1 step ≙ 2 min 5692 857 GB Coding in the delivered condition FA:20 Raising the set boiler water temperature or the set flow temperature when changing from operation with reduced room temperature to operation with standard room temperature, by 20 %.
Diagnosis and service scans Calling up the service menu Only for weather-compensated control units Press OK and å simultaneously for approx. 4 s. Service menu overview Service Diagnosis Actuator test Coding level 1 Coding level 2 Fault history Service functions Terminate service? General Heating circuit 1 Heating circuit 2 Heating circuit 3 DHW Solar Brief scan Reset data HC1 HC2 HC3 Subscriber check Service PIN Service reset Filling Venting Max.
Diagnosis and service scans Diagnosis (cont.) Note "- - -" appears on the display if a sensor that has been scanned is faulty. Calling up operating data 3. Select required group, e.g. "General". Weather-compensated control unit Constant temperature control unit 1. Press OK and å simultaneously for approx. 4 s. Operating instructions, chapter "Scanning information" 2. "Diagnosis" Resetting operating data Saved operating data (e.g. hours run) can be reset to 0.
Diagnosis and service scans Diagnosis (cont.
Diagnosis and service scans Diagnosis (cont.
Diagnosis and service scans Diagnosis (cont.) 4. Confirm selected scan with OK.
Diagnosis and service scans Diagnosis (cont.
Diagnosis and service scans Diagnosis (cont.) Brief scan F 9 Display Software version Open Therm extension (if installed) DHW heat- External hook-up 0 - 10 V ing status Display in % Checking outputs (relay test) Weather-compensated control unit 5692 857 GB 1. Press OK and å simultaneously for approx. 4 s. 2.
Diagnosis and service scans Checking outputs (relay test) (cont.) Display Start solar circuit pump Start solar circ pmp min Start solar circ pmp max Start sol. output sS Explanation Solar circuit pump sF output at solar control module SM1 enabled Solar circuit pump output at solar control module SM1 switched to minimum speed Solar circuit pump output at solar control module SM1 switched to maximum speed Output sS at solar control module SM1 enabled Constant temperature control unit 1.
Troubleshooting Fault display Weather-compensated control unit If there is a fault, the red fault indicator A flashes. " " flashes on the display and "Fault" is shown. A R 1 2 0 3 4 bar The fault code is displayed with OK. For an explanation of the fault code, see the following pages. For some faults, the type of fault is also displayed in plain text. Calling up acknowledged faults Select "Fault" in the standard menu. The current faults will be displayed in a list.
Troubleshooting Fault display (cont.) Constant temperature control unit If there is a fault, the red fault indicator A flashes. The two-digit fault code and (subject to the type of fault) " " or " " flash on the programming unit display. A A fault messaging facility, if connected, will be switched OFF. If an acknowledged fault is not remedied, the fault message will be re-displayed the following day and the fault message facility restarted. Calling up acknowledged faults R 1 2 0 Press OK for approx.
Troubleshooting Fault codes Displayed fault code 10 Const. Weath.- System charcomp.
Troubleshooting Fault codes (cont.) Const. 4C Weath.- System charcomp.
Troubleshooting 5692 857 GB Fault codes (cont.) Displayed fault code 93 Const. Weath.- System charcomp. acteristics Cause Measures X X Control mode 94 X X No DHW heating Short circuit, cylinder temperature sensor Short circuit, cylinder temperature sensor 98 X X Control mode 99 X X Control mode 9A X X No DHW heating 9b X X Control mode 9C X X No DHW heating 9E X X Control mode Check temperature sensor at connection S3 to the Vitosolic 100.
Troubleshooting Fault codes (cont.) Const. Weath.- System charcomp.
Troubleshooting Fault codes (cont.) Displayed fault code bC Const. Weath.- System charcomp.
Troubleshooting Fault codes (cont.) Displayed fault code C4 Const. Weath.- System charcomp. acteristics Cause Measures X X Control mode Check Open Therm extension C5 X X Control mode, max. pump speed X Control mode, max. pump speed X Control mode, max. pump speed X Control mode, max.
Troubleshooting Fault codes (cont.) Displayed fault code CE Const. Weath.- System charcomp. acteristics Cause Measures X X Control mode Check electrical connections X Control mode Communication error, ext.
Troubleshooting Displayed fault code dd Const. Weath.- System charcomp.
Troubleshooting Fault codes (cont.) Displayed fault code E5 Const. Weath.- System charcomp. acteristics Cause X X E7 X X E8 X X EA X X Eb X X EC X X Burner in a fault Parameter state fault during calibration Ed X X Burner in a fault Internal fault state Replace the control unit. Check the ionisation electrode and cable. Press reset button R. Check the ionisation electrode and cable. Press reset button R. Check the ionisation electrode and cable. Press reset button R.
Troubleshooting Fault codes (cont.) Displayed fault code EE Const. Weath.- System charcomp. acteristics X X EF X X F0 X X F1 X X 102 Cause Measures Check the ionisation electrode and connecting cable, measure the ionisation current, check the gas supply (gas pressure and gas flow limiter), check the gas train, ignition, ignition module, ignition electrodes and the condensate drain. Press reset button R.
Troubleshooting 5692 857 GB Fault codes (cont.) Displayed fault code F2 Const. Weath.- System charcomp. acteristics X X F3 X X F8 X X F9 X X FA X X FC X X Cause Measures Burner in a fault The temperastate ture limiter has responded. Check the heating system fill level. Check the circulation pump. Vent the system. Check the temperature limiter and connecting cables. Press reset button R.
Troubleshooting Fault codes (cont.) Displayed fault code Fd Const. Weath.- System charcomp. acteristics X X Cause Burner in a fault Fault, burner state control unit X X Burner blocked Boiler coding or in a fault card or main state PCB faulty FF X X Burner blocked Internal fault or in a fault or reset butstate ton R blocked Check ignition electrodes and connecting cables. Check whether a strong interference (EMC) field exists near the appliance. Press reset button R.
Troubleshooting Repairs Checking the outside temperature sensor (weather-compensated control unit) 1. Pull plug "X3" from the control unit. X3 200 2. Test the resistance of the outside temperature sensor across terminals "X3.1" and "X3.2" on the disconnected plug and compare it with the curve. 3. Where actual values deviate severely from the curve values, disconnect the wires at the sensor and repeat test on the sensor itself. 20 10 8 6 -20 -10 0 10 20 30 Temperature in °C 4.
Troubleshooting Repairs (cont.
Troubleshooting Repairs (cont.) 1. ■ Boiler water temperature sensor Pull the leads from boiler water temperature sensor A and check the resistance. ■ Cylinder temperature sensor Pull plug % from the cable harness at the control unit and check the resistance. ■ Low loss header flow temperature sensor Pull plug "X3" from the control unit and check the resistance across terminals "X3.4" and "X3.5". 2. Check the sensor resistance and compare the actual values with the curve. 10 8 6 4 2 1 0.8 0.6 0.
Troubleshooting Repairs (cont.) Checking the outlet temperature sensor or comfort sensor (gas combi boilers only) 1. Disconnect the leads from outlet temperature sensor A or comfort sensor B. B 2. Check the sensor resistance and compare it with the curve.
Troubleshooting Repairs (cont.) 10 8 6 4 2 1 0.8 0.6 0.4 10 30 50 70 90 110 Temperature in °C 3. Replace the sensor in case of severe deviation. Note Water can leak when replacing the outlet temperature sensor. Close the cold water shut-off valve. Drain the DHW line and the plate heat exchanger (DHW side).
Troubleshooting Repairs (cont.) Checking the plate heat exchanger 1. Shut off and drain the boiler on its heating water and DHW side. 2. Release the side closures and pivot the control unit forward. A 3. Pull the leads from comfort sensor A. 4. Remove the retaining clip and siphon B. 5. Remove thermal insulation C. 6. Undo screws D and remove plate heat exchanger E through the front. EDC Note During removal, small amounts of water may trickle out and escape from the plate heat exchanger. B 7.
Troubleshooting Repairs (cont.) Checking the flue gas temperature sensor The flue gas temperature sensor locks out the boiler when the permissible flue gas temperature is exceeded. Reset the interlock after the flue system has cooled down by pressing reset button R. A Resistance in kΩ 20 10 8 6 4 1. Pull the leads from flue gas temperature sensor A. 2. Check the sensor resistance and compare it with the curve. 3. Replace the sensor in case of severe deviation. 2 1 0.8 0.6 0.
Troubleshooting Repairs (cont.) 1. Pull the leads from temperature limiter A. A 2. Check the continuity of the temperature limiter with a multimeter. 3. Remove the faulty temperature limiter. 4. Coat the replacement temperature limiter with heat conducting paste and install it. 5. After commissioning, press reset button R on the control unit. Checking the fuse 1. Switch OFF the power. 112 2. Release the side closures and pivot the control unit down.
Troubleshooting Repairs (cont.) 3. Remove cover A. 4. Check fuse F1 (see connection and wiring diagram). Extension kit for heating circuit with mixer Checking the setting of rotary selector S1 The rotary selector on the PCB of the extension kit defines the assignment to the relevant heating circuit.
Troubleshooting Repairs (cont.) 2. At plug gS, swap the cores at terminals "|" and "~". 3. Refit the casing cover. Checking the Vitotronic 200-H (accessories) 5692 857 GB The Vitotronic 200-H is connected to the control unit via the LON cable. To test the connection, carry out a subscriber check at the boiler control unit (see page 36).
Function description Constant temperature control unit °C 48 s A Heating mode The selected set boiler water temperature will be maintained when a demand is being raised by the room thermostat and the heating program is set to DHW and central heating "G". The boiler water temperature will be maintained at the default frost protection temperature when there is no demand. The electronic temperature limiter inside the burner control unit limits the boiler water temperature.
Function description Constant temperature control unit (cont.) In the delivered condition, the set boiler water temperature is 20 K higher than the set DHW temperature (adjustable via coding address "60"). The burner will be switched OFF and the circulation pump run-on time will begin, if the actual cylinder temperature exceeds the set cylinder temperature by 2.5 K.
Function description Weather-compensated control unit (cont.) DHW heating with gas fired combi boilers If the flow switch detects that hot water is being extracted (> 3 l/min) then the burner, circulation pump and 3-way valve are switched on or changed over. The burner modulates according to the DHW outlet temperature and is limited by the temperature limiter (82 °C) on the boiler side.
Function description Internal extensions (accessories) Internal extension H1 ■ Heating circuit pump for a heating circuit without mixer (coding address "53:2") ■ Circulation pump for cylinder heating (coding address "53:3") An external safety valve can be connected to gD. 5692 857 GB The internal extension is integrated into the control unit housing. The following alternative functions can be connected to relay output sK.
Function description Internal extensions (accessories) (cont.) Internal extension H2 ■ Heating circuit pump for heating circuit without mixer (coding address "53:2") ■ Circulation pump for cylinder heating (coding address "53:3") An extractor can be switched OFF via connection aBJ when the burner starts. 5692 857 GB The internal extension is integrated into the control unit housing. The following alternative functions can be connected to relay output sK.
Function description External extensions (accessories) Extension AM1 Circulation pump Circulation pump Power supply [terminals] fÖA Power supply terminal for additional accessories aVG KM BUS 5692 857 GB A1 A2 fÖ 120
Function description External extensions (accessories) (cont.) Functions One of the following circulation pumps can be connected to each of the terminals A1 and A2: ■ Heating circuit pump for the heating circuit without mixer ■ Circulation pump for cylinder heating ■ DHW circulation pump Function DHW circulation pump sK Heating circuit pump sÖ Select the function for these outputs via the codes on the boiler control unit: ■ Output A1: Code 33 ■ Output A2: Code 34 Code Output A2 34:0 (delivered cond.
Function description External extensions (accessories) (cont.
Function description External extensions (accessories) (cont.) Digital data inputs DE1 to DE3 The following functions can be connected alternatively: ■ External heating program changeover for each heating circuit ■ External blocking ■ External blocking with fault message input ■ External demand with minimum boiler water temperature ■ Fault message input ■ Short operation of the DHW circulation pump The hooked-up contacts must correspond to protection class II.
Function description External extensions (accessories) (cont.) Function assignment Select the function of output aBJ via code 36 at the boiler control unit. Control functions External heating program changeover The "External heating program changeover" function is connected via extension EA1. There are 3 inputs available at extension EA1 (DE1 to DE3).
Function description Control functions (cont.) Heating program changeover No heating program changeover Duration of the heating program changeover 1 to 12 hours Code F2:0 F2:1 to F2:12 The heating program changeover stays enabled for as long as the contact remains closed, but at least as long as the duration selected in coding address "F2". External blocking The "External blocking" and "External blocking and fault message input" functions are connected via extension EA1.
Function description Control functions (cont.) External demand Input DE1 Input DE2 Input DE3 The effect on the internal circulation pump is selected with code 3F. The effect on the relevant heating circuit pump is selected with code d7. Code 3A:2 3b:2 3C:2 The minimum set boiler water temperature in case of external demand is selected in coding address "9b".
Function description Control functions (cont.) When the screed drying function is activated, the heating circuit pump of the mixer circuit is switched ON and the flow temperature will be held in accordance with the selected profile. After completion (30 days), the mixer circuit will again be regulated automatically via the set parameters. Observe EN 1264. The report to be provided by the heating contractor must contain the following heat-up details: ■ Heat-up data with respective flow temperatures ■ Max.
Function description Control functions (cont.
Function description Control functions (cont.) Flow temperature °C Temperature profile 6: Code F1:6 60 50 40 30 20 10 1 5 10 15 20 25 30 Days 25 30 Days Flow temperature °C Temperature profile 7: Code F1:15 50 40 30 20 10 1 5 10 15 20 Raising the reduced room temperature The outside temperature limits for the start and end of the temperature raising can be adjusted via coding addresses "F8" and "F9".
Function description Control functions (cont.) Example using the settings in the delivered condition Boiler water or flow temperature in °C 90 80 A 70 60 50 B 40 35 30 30 Se t ro 25 om tem 20 10 5 per 15 atu 1 re in ° 0 5 C 0 -5 -10 -15 -20 Outside temp.
Function description Control functions (cont.
Function description Allocating heating circuits to the remote control The heating circuit allocation must be configured when commissioning the Vitotrol 200A or Vitotrol 300A. Heating circuit Configuration Vitotrol 200A Vitotrol 300A The remote control affects the heating circuit with- H 1 HK1 out mixer A1 The remote control affects the heating circuit with H 2 HK2 mixer M2 The remote control affects the heating circuit with H 3 HK3 mixer M3 Note One heating circuit can be allocated to the Vitotrol 200A.
Function description Electronic combustion controller (cont.) Air factor λ – CO2/O2 content Air factor λ O2 content (%) CO2 content (%) for natural gas H 1.24 4.4 9.2 1.27 4.9 9.0 1.30 5.3 8.7 1.34 5.7 8.5 1.37 6.1 8.3 1.40 6.5 8.1 1.44 6.9 7.8 CO2 content (%) for LPG P 10.9 10.6 10.3 10.0 9.8 9.6 9.3 5692 857 GB To achieve an optimum combustion control, the system regularly carries out an automatic self-calibration; also after a power failure (shutdown).
Designs A1 X...
Designs Connection and wiring diagrams – internal… (cont.
Designs A1 A2 A3 136 Main PCB Power supply unit Optolink A4 A5 A6 Burner control unit Programming unit Coding card 5692 857 GB Connection and wiring diagram – external connections
Designs Connection and wiring diagram – external… (cont.) A7 A8 A9 S1 S2 X...
Parts lists Spare parts information Quote the part and serial no. (see type plate) and the item number of the required part (as per this parts list). Obtain standard parts from your local supplier. 001 002 003 004 058 059 060 061 062 064 070 071 072 073 074 075 076 077 078 079 080 081 082 083 084 085 086 088 100 101 102 103 104 105 Burner flange gasket Burner fan Gas train Burner door Ignition unit Venturi extension Clip 7 8 mm Grommet Gasket A 10x15x1.5 (set) Grommet Air vent valve Grommet O-ring 20.
Parts lists Parts lists (cont.
Parts lists Parts lists (cont.
Parts lists Parts lists (cont.
Parts lists Parts lists (cont.
Parts lists Parts lists (cont.
Commissioning/service reports Commissioning/service reports Setting and test values Static pressure Set value Date: By: mbar Supply pressure (flow pressure) mbar = for natural gas H mbar = for LPG Tick gas type Carbon dioxide content CO2 ■ at lower output ■ at upper output Oxygen content O2 ■ at lower output ■ at upper output Service max. 57.5 mbar 17.4-25 mbar 25-47 mbar % by vol. % by vol. % by vol. % by vol.
Specification Specification Rated voltage Rated frequency Rated current Protection class IP rating 230 V 50 Hz 6A I IP X 4 D to EN 60529 Permissible ambient temperature ■ during operation 0 to +40 °C ■ during storage and transport -20 to +65 °C Gas condensing boiler Rated output range TV/TR 50/30 °C TV/TR 80/60 °C Rated heat input range Power consumption in the delivered condition Connection values in relation to the max.
Specification Specification (cont.) Rated output range TV/TR 50/30 °C kW TV/TR 80/60 °C kW Rated output range for DHW heating kW with natural gas H LPG Product ID m3/h kg/h 6.5 - 26 5.9 - 23.7 5.9 - 29.3 8.8 - 30 7.9 - 27.8 7.9 - 30.5 3.23 3.31 2.38 2.43 _-0085BR0432 8.8 - 35 7.9 - 32.2 7.9 - 35.6 3.86 2.85 5692 857 GB Note The supply values are only for documentation purposes (e.g. in the gas contract application) or to estimate the supplementary volumetric settings.
Certificates Declaration of conformity Declaration of conformity for the Vitodens 200-W We, Viessmann Werke GmbH&Co KG, D-35107 Allendorf, confirm as sole responsible body that the product Vitodens 200-W complies with the following standards: DIN 4753 EN 483 EN 625 EN 677 EN 806 EN 55 014 EN 60 335-1 EN 60 335-2-102 EN 61 000-3–2 EN 61 000-3-3 EN 62 233 In accordance with the following Directives, this product is designated _-0085: 97/23/EC 92/42/EEC 2004/108/EC 2006/95/EC 2009/142/EC This product meet
Certificates Manufacturer's certificate according to the 1st BImSchV [Germany] We, Viessmann Werke GmbH&Co KG, D-35107 Allendorf, confirm that the product Vitodens 200-W complies with the NOx limits specified by the 1st BImSchV paragraph 7 (2) [Germany]. Allendorf, 20 January 2010 Viessmann Werke GmbH&Co KG 5692 857 GB pp.
Keyword index Keyword index A Acknowledging a fault display............91 Allocating heating circuits................132 B Boiler temperature sensor................106 Boosting DHW heating.....................117 Brief scans.........................................84 Burner gasket.....................................19 Burner gauze assembly.....................19 Burner installation..............................21 Burner removal..................................19 C Calling up fault messages............
Keyword index Keyword index (cont.) L Language selection..............................9 LON....................................................35 ■ Fault monitoring..............................36 ■ Setting subscriber numbers............35 LON communication module..............35 LON subscriber check........................36 M Manufacturer's certificate ................148 O Outlet temperature sensor...............108 Output setting.....................................17 Outside temperature sensor........
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Viessmann Werke GmbH&Co KG D-35107 Allendorf Telephone: +49 6452 70-0 Fax: +49 6452 70-2780 www.viessmann.com 152 Viessmann Limited Hortonwood 30, Telford Shropshire, TF1 7YP, GB Telephone: +44 1952 675000 Fax: +44 1952 675040 E-mail: info-uk@viessmann.com chlorine-free bleached paper Printed on environmentally friendly, Gas condensing combi boiler Type WB2C 6.5 to 26.0 kW from serial no. 7124 987 0 00001 ... 8.8 to 30.0 kW from serial no. 7424 989 0 00001 ... 8.8 to 35.0 kW from serial no.
