Service instructions VIESMANN for contractors Vitodens 200-W Type WB2B, 4.8 to 35.0 kW Wall mounted gas fired condensing boiler Natural gas and LPG version For applicability, see the last page VITODENS 200-W 5692 672 GB 5/2008 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. Target group These instructions are exclusively designed for qualified personnel.
Safety instructions Safety instructions (cont.) 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. by removing a separate fuse or by means of a main isolator. & Safeguard the system against unauthorised reconnection. & Please note Electronic modules can be damaged by electro-static discharges.
Index Index Commissioning, inspection, maintenance Steps - commissioning, inspection and maintenance ................................... Further details regarding the individual steps .............................................. 5 7 Coding Code 1........................................................................................................ 36 Code 2........................................................................................................
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 ! • • • • • • ! ! • 7 02. Venting the boiler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 03. Venting the heating system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Commissioning, inspection, maintenance Steps - commissioning, inspection and . . . (cont.) Commissioning steps Inspection steps Maintenance steps ! Page ! ! 21. Flow limiter (only for gas combi boilers) . . . . . . . . . . . . . . . . . . . . . 22 • • • • • • • • • • • • 23. Checking the function of all safety valves • • • • • • 26. Flue gas emissions test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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 3.0 mol/m 3 , e.g. using a small softening system for heating water (see Viessmann Vitoset price list).
Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Venting the boiler 1. Close the shut-off valves on the heating water side. 2. Connect the drain hose between top valve B and a drain outlet. 3. Open valves A and B and vent using mains pressure until no more air noise is audible. If required, move the 3-way valve into its central position to achieve complete venting. For this, set code "2F:2". 4. Close valves A and B and open the heating water shut-off valves.
Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) 2. Activate the venting program via coding address "2F:1" in code 1. 3. Check the system pressure. Note To call up code 1 and for setting the coding address, see page 36. For function and sequence of the venting program, see page 99. Whilst the venting program runs, the display shows "EL" (constant temperature control unit) or "Entlüftung" (Venting) (weathercompensated control unit).
Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Setting the time and date (if required) – only for weathercompensated control units Note & During commissioning, or after a prolonged time out of use, it may be necessary to reset the time and date, if the time flashes in the display. & When the unit is first taken into operation the display is in German (default language setting): Date (see step 2) Press the following keys: Time (see step 1) 1.
Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) 3. c press this button again, "Außentemperatur" (outside temperature) is displayed. 4. b for the required language. 5. d to confirm. Checking the gas type The boiler is equipped with an electronic combustion control unit that adjusts the burner for optimum combustion in accordance with the prevailing gas quality. & The boiler can be operated with natural gas in the Wobbe index range 10.0 to 16.1 kWh/m 3 (36.
Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Gas type conversion (only for operation with LPG) 1. Set adjusting screw A at the gas train to "2". 2. Switch ON system ON/OFF switch "8". 3. Adjust the gas type (see page 82): & Call up code 2 & In coding address "11", select value "9" & In coding address "82", select value "1" (operation with LPG) & Set code "11" ≠ "9". & Terminate code 2. 4. Open the gas shut-off valve.
Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Yes Ignition No Fault F4 Check the ignition module (control voltage 230 V across plugs "X2.1" and "X2.
Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) For further details regarding faults, see page 69. 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. Operation with LPG Flush the LPG tank twice during commissioning/replacement. Thoroughly vent the tank and gas supply lines after flushing. 1.
Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) 6. Check the supply (flow) pressure. Set values: & Natural gas 20 mbar. & LPG 50 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. Take the action shown in the following table. 8. Shut down the boiler, close the gas shut-off valve, remove the pressure gauge and close test nipple A with the screw. 9.
Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Setting the maximum output Note You can limit the maximum output for heating operation. The limit is set via the modulation range. The max. adjustable heating output is limited upwards by the boiler coding card. 1. Start the boiler. 4. Confirm the set value with d. 2. Press K and F simultaneously until a value flashes (e.g. "85") and "A" appears.
Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) For balanced flue systems tested together with the wall mounted gas fired boiler, the requirement for a tightness test during commissioning by the flue gas inspector is not applicable. We recommend that your heating engineer carries out a simple leak/ tightness test during the commissioning of your system.
Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) 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. 5. Undo four screws G and remove the burner. ! Please note To prevent damage, never rest the burner on the gauze assembly. 5692 672 GB 3. Pull cables from fan motor A, gas train B, ionisation electrode C, ignition unit D and earth tab E. 4.
Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Checking the burner gasket and the burner gauze assembly Check burner gasket A and burner gauze assembly E for damage and replace, if required. Generally replace the burner gasket every 2 years. 1. Remove electrodes B. 2. Undo three retaining clips C at thermal insulation ring D and remove thermal insulation ring D. 4. Insert and secure a new burner gauze assembly E with a new gasket F. Torque: 3.5 Nm.
Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Checking and adjusting the ignition and ionisation electrodes 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 and align the electrodes together with new gaskets. Tighten the electrode fixing screws with 2.5 Nm. 2.
Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) 1. Use a vacuum cleaner to remove residues from the 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 the heat exchanger A and let the solution soak in for approx. 20 min. 3. Thoroughly flush the heat exchanger A with water. 4. Install the burner and torque the screws diagonally with 4 Nm. 5.
Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Checking the condensate drain and cleaning the siphon 1. Check that the condensate can drain freely at the siphon. 2. Remove retaining clip A and siphon B. 3. Clean siphon B. 4. Fill siphon B with water, fit it and secure with retaining clip A. 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.
Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Checking the diaphragm expansion vessel and system pressure Note Carry out this test on a cold system. 1. Drain the system, or close the cap valve on the diaphragm expansion vessel and reduce the pressure, until the pressure gauge indicates "0". 2. If the inlet pressure of the diaphragm expansion vessel is lower than the static system pressure, top up with nitrogen until the inlet pressure is raised by 0.1 to 0.
Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Note During commissioning, the combustion control unit carries out an automatic calibration. Only test the emissions approx. 30 s after the burner has started. 4. Check the CO 2 content. Should the actual value deviate from the above ranges by more than 1 %, implement steps from page 23. 5. Enter actual values into the service report. 6. Adjust the upper output. 1.
Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Matching the control unit to the heating system Note 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. In the following system designs, DHW heating is illustrated with a separate DHW cylinder.
Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) System version 2 One heating circuit without mixer A1 and one heating circuit with mixer M2 (with/without DHW heating) Note The volume flow of the heating circuit without mixer must be at least 30% greater than the volume flow of the heating circuit with mixer.
Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) System version 3 One heating circuit without mixer A1 and one heating circuit with mixer M2 with system separation (with/without DHW heating) 1 2 3 4 5 6 7 Vitodens 200-W Outside temperature sensor DHW cylinder Cylinder temperature sensor Heating circuit without mixer A1 Heating circuit with mixer M2 Temperature limiter for limiting the max. temp.
Commissioning, inspection, maintenance Further details regarding the individual steps (cont.
Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Adjusting the heating curves (only for weather-compensated control units) The heating curves illustrate the relationship between the outside temperature and the boiler water or flow temperature. To put it simply: The lower the outside temperature, the higher the boiler water or flow temperature. The room temperature, again, depends on the boiler water or the flow temperature.
Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Changing the slope and level 1. Slope: Change with coding address "d3" in code 1. Setting range 2 to 35 (equals slope 0.2 to 3.5). 2. Level: Change with coding address "d4" in code 1. Setting range -13 to +40 K.
Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Adjusting the set room temperature Standard room temperature 5. Adjust the set day temperature with rotary selector "ts". The value will be automatically accepted after approx. 2 s. Accordingly, the heating curve is adjusted along set room temperature axis C, which results in modified start/stop characteristics of the heating circuit pumps if heating circuit pump logic function is active.
Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) to select heating circuit A1 (heating circuit without mixer) or 5. E 3. a "2r" flashes. 7. d 4. d to select heating circuit with mixer M2. 2. d Call up the set night temperature. 6. a/b Change the value. Confirm the value. Connecting the control unit to the LON system (only for weather-compensated control units) The LON communication module (accessories) must be plugged in.
Commissioning, inspection, maintenance Further details regarding the individual steps (cont.
Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Press the following keys: 1. L + d simultaneously for approx. 2 s. The subscriber check has been initiated. 2. a/b for the required subscriber. 3. d Check is enabled "Check" flashes until its completion. The display and all key illuminations for the selected subscriber flash for approx. 60 s. 4. "Check OK" is displayed during communication between both devices.
Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) 3. d The service display will be cleared (for a weathercompensated control unit: "Acknowledge: Yes", reconfirm with d). The red fault display continues to flash. Note An acknowledged service message can be redisplayed by pressing d (approx. 3 s). After a service has been carried out 1. Reset code "24:1" to "24:0". The red fault indicator extinguishes.
Coding Code 1 Calling up code 1 Note & On weather-compensated control units, codes are displayed as plain text. & Codes that are irrelevant due to the system equipment level or the setting of other codes will not be displayed. & Heating systems with one heating circuit without mixer and one heating circuit with mixer: & Initially, the possible coding addresses "A0" to "d4" for the heating circuit without mixer A1 are scanned; then the coding addresses for the heating circuit with mixer M2 are scanned.
Coding Code 1 (cont.) Overview Coding Coding in the delivered condition System design 00 :1 System version 1: 1 heating circuit without mixer A1, without DHW heating Possible change 00 :2 00 :3 00 :4 00 :5 00 :6 06:20 to 06:127 Maximum limit of the boiler water temperature within the ranges defaulted by the boiler 2F:1 2F:2 Venting program enabled Fill program enabled 5692 672 GB Max. boiler water temp. 06:...
Coding Code 1 (cont.) Coding in the delivered condition Possible change Subscriber no. LON subscriber number, 77:1 LON subscriber number 77:2 adjustable from 1 to 99: to 1 - 4 = Boiler 77:99 5 = Cascade 10 - ... = Vitotronic 200-H 99 = Vitocom Note Allocate each number only once.
Coding Code 2 Calling up code 2 Note & On weather-compensated control units, codes are displayed as plain text. & Codes that are irrelevant due to the system equipment level or the setting of other codes will not be displayed. Press the following keys: 1. L + G simultaneously for approx. 2 s. 2. d to confirm. 3. a/b for the required coding address; the address flashes. 4. d to confirm; the value flashes. 5. a/b for the selected value. 6.
Coding Code 2 (cont.
Coding Code 2 (cont.) Coding Coding Coding in the delivered condition System design 00 :1 System version 1: 1 heating circuit without mixer A1, without DHW heating Possible change 00 :2 00 :3 00 :4 00 :5 5692 672 GB 00 :6 Boiler/burner 06:...
Coding Code 2 (cont.
Coding Code 2 (cont.) Internal circuValue address lation pump 32: ... 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Control funct. Control funct. Control funct. Control funct. Control funct. Control funct. Control funct. Control funct. OFF OFF OFF OFF OFF OFF OFF OFF Heating circuit pump Heating circuit without mixer Control funct. Control funct. Control funct. Control funct. OFF OFF OFF OFF Control funct. Control funct. Control funct. Control funct.
Coding Code 2 (cont.) Internal Value address circulation pump 34: ... 3 8 Control funct. Control funct. Control funct. Control funct. Control funct. OFF 9 OFF 10 OFF 11 OFF 12 13 14 15 16 OFF OFF OFF OFF ON 17 ON 18 ON 19 ON 20 21 22 23 ON ON ON ON 4 5 6 Heating circuit pump Heating circuit with mixer OFF OFF Control funct. Control funct. OFF Control funct. OFF OFF OFF Control funct. OFF OFF OFF Control funct. Control funct. Control funct. Control funct.
Coding Code 2 (cont.) 5692 672 GB Coding in the delivered condition Possible change Boiler/burner 38:≠0 Fault burner control unit 38:0 Status burner control unit: Operational (no fault) 51:1 When there is a heat de51:0 Internal circulation mand, the internal circupump is always started lation pump will only be when there is a heat destarted when the burner mand is operational. System with heating water buffer cylinder.
Coding Coding in the delivered condition 58:0 Without auxiliary function for DHW heating 59:0 5b:0 60:20 62:2 Cylinder heating: Starting point -2.5 K Stopping point +2.5 K DHW cylinder directly connected to the boiler During DHW heating, the boiler water temperature is max. 20 K higher than the set DHW temperature Circulation pump with 2 min run-on time after cylinder heating 63:0 Without auxiliary function for DHW heating (only for constant temperature control units) 65:...
Coding Code 2 (cont.) Coding in the delivered condition 6F:... Maximum output for DHW heating in %; defaulted by the boiler coding card 71:0 DHW circulation pump: "ON" in accordance with the time program (only for weather-compensated control units) 72:0 DHW circulation pump: "ON" in accordance with the time program (only for weather-compensated control units) Possible change Max.
Coding Code 2 (cont.
Coding Code 2 (cont.) Coding in the delivered condition 85:0 Standard mode Possible change 85:1 Manual calibration of the combustion controller (only adjustable if coding address 11:9 has been set). The red fault indicator also flashes during calibration. The process has terminated when the red fault indicator no longer flashes (after approx. 1 min). Note Heat must be drawn off during manual calibration.
Coding Coding in the delivered condition 95:0 Without Vitocom 100 communication interface 97:0 With LON communication module: The outside temperature of the sensor connected to the control unit is utilised internally (only for weather-compensated control units) 98:1 Viessmann system number (in conjunction with monitoring several systems via Vitocom 300) 9b:0 No minimum set boiler water temperature for external demand Possible change 95:1 With the Vitocom 100 communication interface; automatic recognition
Coding Code 2 (cont.) Coding in the delivered condition A3:2 Outside temperature below 1 °C: Heating circuit pump "ON" Outside temperature above 3 °C: Heating circuit pump "OFF" ! Possible change Heating circuit pump A3:-9 "ON/OFF" (see the folto lowing table) A3:15 Please note When selecting a value below 1 °C, there is a risk of pipes outside the thermal envelope of the building being damaged by frost. The standby mode, in particular, should be taken into consideration, e.g. during holidays.
Coding Code 2 (cont.) Coding in the delivered condition Boiler circuit, mixer circuit A4:0 With frost protection (only for weather-compensated control units) Possible change A4:1 No frost protection, adjustment only possible if coding address "A3: -9" has been selected.
Coding Code 2 (cont.) Coding in the delivered condition Boiler circuit, mixer circuit A6:36 Extended economy function disabled (only for weather-compensated control units) Possible change A6:5 to A6:35 A7:0 Without mixer economy A7:1 function (only for weather-compensated control units) A8:1 Heating circuit with mixer M2 creates a demand for the internal circulation pump (only for weather-compensated control units) 5692 672 GB A8:0 Extended economy mode is enabled, i.e.
Coding Code 2 (cont.
Coding 5692 672 GB Code 2 (cont.) Parameter address b5:...
Coding Code 2 (cont.) Coding in the delivered condition E1:1 With remote control: The set day temperature is adjustable at the remote control unit from 10 to 30 °C (only for weather-compensated control units) E2:50 With remote control: No display correction for the actual room temperature (only for weather-compensated control units) F1:0 Screed drying function disabled (only for weather-compensated control units).
Coding Code 2 (cont.) Coding in the delivered condition F6:25 In the "DHW only" operating mode, the internal circulation pump is permanently ON (only for constant temperature control units) F7:25 In "Standby mode", the internal circulation pump is permanently ON (only for constant temperature control units) F8:-5 Temperature limit for terminating the reduced mode -5 ºC, see example on page 102. Observe the setting of coding address "A3".
Coding Code 2 (cont.) 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 %. See example on page 103 (only for weather-compensated control units). Fb:30 Duration for raising the set boiler water temperature or the set flow temperature (see coding address "FA") 60 min. See example on page 103 (only for weather-compensated control units).
Service scans Service level overview Function Temperatures, boiler coding card and brief scans Relay test Key combination Press K and G simultaneously for approx. 2 s Press K and d simultaneously for approx. 2 s Press K and F simultaneously for approx. 2 s Press c Max.
Service scans Service level overview (cont.) Function Resetting codes to their delivered condition Key combination Press L and G simultaneously for approx. 2 s; then e Exit – Page 58 Temperatures, boiler coding card and brief scans Weather-compensated control unit Press the following keys: 2. a/b for the required scan. 1. K + G simultaneously for approx. 2 s. 3. d Scanning is completed.
Service scans Temperatures, boiler coding card and brief . . . (cont.
Service scans Temperatures, boiler coding card and brief . . . (cont.
Service scans Temperatures, boiler coding card and brief . . . (cont.) Brief scan E Display screen 3 A 4 5 b C c 0: no external demand 1: external demand 0 0 0 0 0 0 0 d 0 0: no exter- External 0 to 10 V hook-up Display in °C nal block0: no external hook-up ing 1: external blocking 0 Set boiler water temperature 0 Highest demand temperature Burner control unit type Equipment type 0 Set cylinder temperature 0 Max.
Service scans Checking outputs (relay test) (cont.) Display screen Htg. system valve Valve in middle pos. DHW valve Htg.cir.pump M2 On Mix.valve open Mix.valve closed Intern.output On Htg.cir.pump A1 On DHW pump On Recirc.pump On Centr.fault ind.
Service scans Scanning operating conditions and sensors 5692 672 GB Weather-compensated control unit Press the following keys: 3. c press again. 1. c "Select heating circuit" is displayed. 4. a/b for the required operating condition. 2. d to confirm; wait approx. 4 s. 5. d Scanning is completed. The following operating conditions can be scanned, subject to the actual system equipment level for heating circuit A1 and heating circuit with mixer M2: Display screen Explanation Participant no.
Service scans Scanning operating conditions and sensors (cont.) Display screen Centr. fault ind. OFF/ON Mix. valve OPEN/CLOSE Solar pump OFF/ON Solar pump, ...h Various languages Explanation If an external extension is installed If an extension kit for one heating circuit with mixer is installed If a Vitosolic is installed Actual hours run The respective languages can be selected as permanent display language with d Constant temperature control unit Press the following keys: 1. c 2.
Troubleshooting Fault display Fault display layout A Fault display B Fault symbol C Fault number D Fault code The red fault indicator flashes for every fault. A fault in the burner control unit causes the display to show "E".
Troubleshooting Fault display (cont.) & & Collector sensor Solar DHW sensor & & Remote control Fault participant Checking and acknowledging faults Note If an acknowledged fault is not removed, the fault message will be redisplayed: & With a constant temperature control unit after 24 h & With a weather-compensated control unit at 7:00 h the next day Constant temperature control unit Press the following keys: 2.
Troubleshooting Fault display (cont.) Calling up fault codes from the fault memory (fault history) The 10 most recent faults are saved and may be scanned. The faults are ordered by date, thus the most recent fault is fault number 1. Press the following keys: 1. G + d simultaneously for approx. 2 s. 2. a/b for individual fault codes. 3. Note All saved fault codes can be deleted with e. 4. d Scanning is completed. Fault codes Const. weath.comp.
Troubleshooting Fault codes (cont.) Fault code on the display 28 Const. weath.comp. System characteristics Cause Measures X Regulates without flow temperature sensor (low loss header) Burner blocked System flow temperature sensor lead broken Check the low loss header sensor (see page 80).
Troubleshooting 5692 672 GB Fault codes (cont.) Fault code on the display 58 Const. weath.comp.
Troubleshooting Fault codes (cont.) Fault code on the display 9b Const. weath.comp. System characteristics Cause Measures X X Control mode Check the sensor at the Vitosolic.
Troubleshooting 5692 672 GB Fault codes (cont.) Fault code on the display b5 Const. weath.comp. System characteristics Cause Measures X X Internal fault Replace the control unit.
Troubleshooting Fault codes (cont.) Const. weath.comp. System characteristics Cause Measures X X Control mode Check connections and coding address "54". X Control mode, max. pump speed Communication fault, solar control unit Communication fault – external variable speed heating circuit pump, heating circuit with mixer M2 Communication fault – external variable speed heating circuit pump, heating circuit A1 Communication fault Vitocom 100 (KM BUS) Communication fault – ext.
Troubleshooting Fault codes (cont.) weath.comp. System characteristics Cause Measures X Control mode without room influence Check the room temperature sensor, heating circuit with mixer M2.
Troubleshooting Fault codes (cont.) Const. weath.comp. System characteristics Cause X X Burner in a fault state The ionisation current lies outside the permissible range during calibration EA X X Burner in a fault state Eb X X Burner in a fault state EC X X Burner in a fault state Ed X X F0 X X F1 X X Burner in a fault state Burner blocked Burner in a fault state 76 Measures Check the ionisation electrode and cable. Check the flue gas system for tightness. Press "E RESET".
Troubleshooting Fault codes (cont.) Fault code on the display F2 Const. weath.comp. System characteristics Cause X X Burner in a fault state The temperature limiter has responded. F3 X X Burner in a fault state F4 X X Burner in a fault state F8 X X Burner in a fault state Measures 5692 672 GB Check the heating system fill level. Check the circulation pump. Vent the system. Check the temperature limiter and connecting cables. Press "E RESET".
Troubleshooting Fault code on the display F9 Const. weath.comp. System characteristics Cause Measures X X Burner in a fault state Fan speed too low during the burner start FA X X Burner in a fault state Fan not at standstill FC X X Burner in a fault state Check the fan, check the fan cables and supply; check the fan control. Press "E RESET". Check the fan, fan connecting cables and fan control. Press "E RESET". Check the gas train. Check the flue gas system. Press "E RESET".
Troubleshooting Fault codes (cont.) Fault code on the display FF Const. weath.comp. System characteristics Cause X X Internal fault Burner blocked or in a or "E RESET" key fault state blocked Measures Start the equipment again. Replace the control unit, if the equipment will not restart. Repairs Checking the outside temperature sensor (weather-compensated control unit) 5692 672 GB 1. Pull plug "X3" from the control unit. 2.
Troubleshooting Repairs (cont.) 3. Where actual values strongly deviate from the curve values, disconnect the wires at the sensor and repeat test immediately at the sensor. 4. Subject to result, replace the lead or the outside temperature sensor.
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. & 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. 3.
Troubleshooting Repairs (cont.) Check the outlet temperature sensor or comfort sensor (gas combi boilers only) 1. Disconnect the leads from outlet temperature sensor A or comfort sensor B. 5692 672 GB 2. Check the sensor resistance and compare it with the curve.
Troubleshooting Repairs (cont.) 3. Replace the sensor in case of severe deviation. 5692 672 GB Note Water can leak when replacing the outlet temperature sensor. Close the cold water shut-off valve. Drain the DHW line and the plate-type heat exchanger (DHW side).
Troubleshooting Repairs (cont.) Checking the plate-type 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. 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-type heat exchanger E through the front. Note During removal, small amounts of water may trickle out and escape from the removed plate-type heat exchanger.
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 gas system has cooled down by pressing "E RESET". 1. Pull the leads from flue gas temperature sensor A. 2. Check the sensor resistance and compare it with the curve. 5692 672 GB 3. Replace the sensor in case of severe deviation.
Troubleshooting Repairs (cont.) Checking the temperature limiter If the burner control unit cannot be reset after a fault shutdown, although the boiler water temperature is below approx. 75 °C, check the following: 1. Pull the leads from thermocouple A. 3. Remove the faulty thermocouple. 4. Install a new thermocouple. 5. After commissioning, press reset button "E RESET" at the control unit. 5692 672 GB 2. Check the continuity of the thermocouple with a multimeter.
Troubleshooting Repairs (cont.) Checking the fuse 1. Switch OFF the power. 3. Remove cover A. 2. Release the side closures and pivot the control unit down. 4. Check fuse F1 (see connection and wiring diagram). Extension kit for heating circuit with mixer 5692 672 GB Checking the rotational direction of the mixer motor 1. Switch ON/OFF switch A at the extension kit first OFF and then ON again.
Troubleshooting Repairs (cont.) Then standard control mode resumes. 2. Note the rotational direction of the mixer motor during its self-test. Then set the mixer manually to "Open" again. Note The flow temperature sensor must now capture a higher temperature. If the temperature drops, either the motor is turning in the wrong direction or the mixer set is incorrectly fitted.
Troubleshooting Repairs (cont.) 2. Change over the rotational direction switch: Switch position I for central heating return from the left (delivered condition). Switch position II for central heating return from the right. Checking the Vitotronic 200-H (accessories) 5692 672 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 33).
Function description Constant temperature control unit Control and display elements A Pressure gauge B Fault indicator (red) C Optolink interface only in conjunction with the diagnostic adaptor (accessory) and Vitosoft (accessory) D E F G ON indicator (green) Reset button User interface ON/OFF switch Keys at the user interface: O Set boiler water temperature F Set DHW temperature O+F Emissions test function K Standby mode L DHW only G / b/a d c e Heating and DHW Comfort mode Setting values Confirmat
Function description Constant temperature 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 Weather-compensated control unit (cont.
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 Extensions for external connections (accessories) Internal extension H1 Heating circuit pump for a heating circuit without mixer (coding address "53:2") & Cylinder primary pump (coding address "53:3") An external safety valve can be connected to gD. & 5692 672 GB The internal extension is integrated into the control unit housing. The following alternative functions can be connected to relay output sK.
Function description Extensions for external connections . . . (cont.) Internal extension H2 Heating circuit pump for heating circuit without mixer (coding address "53:2") & Cylinder primary pump (coding address "53:3") An extractor can be switched OFF via connection aBJ when the burner starts. & 5692 672 GB The internal extension is integrated into the control unit housing. The following alternative functions can be connected to relay output sK.
Function description Extensions for external connections . . . (cont.) External extension H1 aVD External blocking (terminals 2 - 3) & External demand & (terminals 1 - 2) & External heating program changeover (terminals 1 - 2) (only for weather-compensated operation) & The allocation of the function "External heating program changeover" is set via coding address "91".
Function description Extensions for external connections . . . (cont.) External extension H2 aVD External blocking (terminals 2 - 3) & External demand & (terminals 1 - 2) & External heating program changeover (terminals 1 - 2) (only for weather-compensated operation) & The allocation of the function "External heating program changeover" is set via coding address "91". aVG KM BUS & & 5692 672 GB The external extension is connected to the boiler control unit via the KM BUS.
Function description Control functions External heating program changeover The "External heating program changeover" function is connected via external extension input "aVD".
Function description Control functions (cont.) External blocking The "External blocking" function is connected via external extension input "aVD". In coding address "32" you can select the influence the "Ext. blocking" signal should have on the connected circulation pumps. External demand The "External demand" function is connected via external extension input "aVD". In coding address "34" you can select the influence the "Ext. demand" signal should have on the connected circulation pumps.
Function description Control functions (cont.) Filling with the control unit switched ON If the system is to be filled with the control unit switched ON, the diverter valve will be moved to its central position via code "2F:2" and the pump will be started. The burner shuts down if this function is enabled via coding address "2F". The program is automatically disabled after 20 min, and coding address "2F" is set to "0". Screed drying function The screed function enables screeds to be dried.
Function description Control functions (cont.
Function description Control functions (cont.) Temperature profile 6: Code "F1:6" Temperature profile 7: Code "F1:15" 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". 5692 672 GB During operation with reduced room temperature, the reduced set room temperature can be automatically raised subject to the outside temperature.
Function description Control functions (cont.) Example using the settings in the delivered condition A Heating curve for operation with standard room temperature B Heating curve for operation with reduced room temperature Reducing the heat-up time The value and duration of the additional increase of the set boiler water or flow temperature can be adjusted in coding addresses "FA" and "Fb".
Function description Control functions (cont.
Function description Remote control DIP switches (cont.) Remote control The remote control affects the heating circuit without mixer A1 DIP switch setting The remote control affects the heating circuit with mixer M2 When connecting a separate room temperature sensor, set DIP switch "3" to "ON". Electronic combustion control unit To check the combustion quality, the CO 2 content or the O 2 content of the flue gas is measured. The actual values enable the prevailing air factor to be determined.
Function description Electronic combustion control unit (cont.) Air factor λ – CO 2 /O 2 content Air factor λ O 2 content CO 2 content (%) (%) for natural gas E 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 CO 2 content (%) for LPG P 10.9 10.6 10.3 10.0 9.8 9.6 9.3 The combustion control unit can also be calibrated manually. e.g. after maintenance or service work (coding address "85").
Designs 5692 672 GB Connection and wiring diagram – internal connections A1 X...
Designs Connection and wiring diagram – internal . . . (cont.
Designs 5692 672 GB Connection and wiring diagram – external connections A1 Main PCB A2 Power supply unit 109
Designs Connection and wiring diagram – external . . . (cont.) A3 A4 A5 A6 A7 A8 % Cylinder temperature sensor (gas fired condensing boiler) or Comfort sensor (gas fired condensing combi boiler) (plug on the cable harness) sÖ Internal circulation pump dG Gas solenoid valve fÖ Power supply lH Power supply accessories and Vitotrol 100 a-Ö Fan motor a-ÖA Fan motor control aYA Gas pressure limiter aVG KM BUS 5692 672 GB A9 S1 S2 X...
Parts lists Parts lists 5692 672 GB 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.
Parts lists Parts lists (cont.
Parts lists 5692 672 GB Parts lists (cont.
Parts lists 5692 672 GB Parts lists (cont.
Parts lists 5692 672 GB Parts lists (cont.
Parts lists 5692 672 GB Parts lists (cont.
Commissioning/service reports Commissioning/service reports Setting and test values Static pressure Supply pressure (flow pressure) = for natural gas E = for natural gas LL = for LPG Tick gas type Carbon dioxide content CO 2 & at lower output & at upper output Oxygen content O 2 & at lower output & at upper output Date: By: mbar max. 57.5 mbar mbar mbar mbar 17.4-25 mbar 17.4-25 mbar 42.5-57.5 mbar Commissioning Service % by vol. % by vol. % by vol. % by vol.
Specification Specification Rated voltage: Rated frequency: Rated current: Safety class: Protection: 230 V~ 50 Hz 6A I IP X 4 D to EN 60529 Electronic temperature limiter setting: Temperature limiter setting: Line fuse (mains): 82 °C (fixed) 100 °C (fixed) max.
Certificates Declaration of conformity Declaration of conformity for the Vitodens 200-W We, Viessmann Werke GmbH & Co KG, D-35107 Allendorf, declare as sole responsible body, that the product Vitodens 200-W complies with the following standards: EN 483 EN 625 EN 677 EN 13 203 EN 50 165 EN 55 014 EN 60 335 EN 61 000-3-2 EN 61 000-3-3 This product is designated _-0085 in accordance with the following directives: 90/396/EEC 92/42/EEC 2004/108/EC 2006/95/EC This product meets the requirements of the Effici
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 NO x limits specified by the 1st BImSchV paragraph 7 (2) [Germany]. Allendorf, 01.12.06 Viessmann Werke GmbH&Co KG 5692 672 GB pp.
Keyword index Keyword index A Acknowledging a fault display . . . . . . . 68 B Boiler water temperature sensor . . . Boosting DHW heating . . . . . . . . . . . . . . . . . Brief scans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Burner gasket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Burner gauze assembly . . . . . . . . . . . . . . . . Burner installation . . . . . . . . . . . . . . . . . . . . . . . . Burner removal . . . . . . . . . . . . . . . . . . . . . . . .
Keyword index Keyword index (cont.) I Ignition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Ignition electrodes . . . . . . . . . . . . . . . . . . . . . . . 20 Ionisation electrode. . . . . . . . . . . . . . . . . . . . . . 20 L Language selection . . . . . . . . . . . . . . . . . . . . . . LON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . LON communication module . . . . . . . . . LON & Fault monitoring . . . . . . . . . . .
5692 672 GB
Viessmann Werke GmbH&Co KG D-35107 Allendorf Telephone: +49 6452 70-0 Fax: +49 6452 70-2780 www.viessmann.com 124 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 fired condensing combi boiler Type WB2B 6.5 to 26.0 kW from serial no. 7194 475 7 00001 ... 8.8 to 35.0 kW from serial no. 7194 477 7 00001 ...
