Viessmann VITODENS 333 Service Instructions Manual
  1. Manuals
  2. Brands
  3. Viessmann Manuals
  4. Boiler
  5. VITODENS 333
  6. Service instructions manual

Viessmann VITODENS 333 Service Instructions Manual

Compact gas fired condensing boiler natural gas and lpg version
Hide thumbs Also See for VITODENS 333:
Table of Contents

Advertisement

Quick Links

See also: Instruction Manual , Instruction and Installation Manual
VIESMANN

Service instructions

for heating engineers
Vitodens 333
Type WS3A, 6.6 to 26.0 kW
Compact gas fired condensing boiler
natural gas and LPG version
See applicability on the last page
VITODENS 333
Please keep safe
5692 548 GB
3/2004

Advertisement

Table of Contents
loading

Related Manuals for Viessmann VITODENS 333

Summary of Contents for Viessmann VITODENS 333

  • Page 1: Service Instructions

    VIESMANN Service instructions for heating engineers Vitodens 333 Type WS3A, 6.6 to 26.0 kW Compact gas fired condensing boiler natural gas and LPG version See applicability on the last page VITODENS 333 Please keep safe 5692 548 GB 3/2004...

  • Page 2: Safety Instructions

    Safety instructions Safety instructions Please follow these safety instructions closely to prevent accidents and material losses. & Safety instructions explained all legal instructions regarding the prevention of accidents, & Danger the TRGI, TRF and special regula- This symbol warns against the tions, e.g.
  • Page 3 It is not permitted to carry out repairs on parts that fulfil a safety function. Ancillary components, spare and Use only original Viessmann spare wearing parts parts, or equivalent parts that have been approved by Viessmann. Important information...

  • Page 4: Table Of Contents

    Index Index Initial start-up, inspection, maintenance Steps - initial start-up, inspection and maintenance ........Further details regarding the individual steps ..........Coding Code 1......................39 Code 2......................41 Resetting the coding to the as delivered condition ........61 Service scans Service level summary ................

  • Page 5: Initial Start-Up, Inspection, Maintenance

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

  • Page 6: Commissioning Steps

    Initial start-up, inspection, maintenance Steps - initial start-up, inspection and maintenanc . . . (cont.) Commissioning steps Inspection steps Maintenance steps Page • • 20. Cleaning the combustion chamber/Cleaning the heating surfaces and installing the burner ....•...

  • Page 7: Further Details Regarding The Individual Steps

    Initial start-up, inspection, maintenance Further details regarding the individual steps Filling the heating system 1. Check the charge pressure of the 4. If the control unit had already been diaphragm expansion vessel. switched ON before filling began: Start the control unit and in code 1, 2.

  • Page 8: Venting The Boiler

    Initial start-up, 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 on valve A with a drain outlet. 3. Open valve A and fill valve in the heating return, and vent at mains pressure, until no sound of escap- ing air can be heard anymore.

  • Page 9: Filling The Siphon With Water

    Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Filling the siphon with water 1. Remove the retaining clip and siphon A. 2. Fill the siphon with water. 3. Fit siphon A and secure with the retaining clip. Language selection (if required) - only for the weather-com- pensated control units 1.

  • Page 10: Pivot The Control Unit Down To Carry Out Commissioning And Maintenance Work

    Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Pivot the control unit down to carry out commissioning and maintenance work 1. Open flap A. 3. Release the side screws and pivot control unit C down with its retain- 2.
  • Page 11 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Fan starts After approx. Check cables and 51 seconds plug-in connec- Fault tions Differential pres- After approx. Check fan cables sure sensor 51 seconds and fan plug-in enables start Fault connections, (0.75 V across...

  • Page 12: Checking The Gas Type

    Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Operational bur- Stops below set Check flue gas boiler tempera- system for sound- ture and immedi- ness (flue gas ately restarts recirculation), again check gas flow pressure Checking the gas type 1.

  • Page 13: Checking Static And Supply Pressure

    Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) 5. Record the gas type in the commis- sioning/service report on page 120. Checking static and supply pressure Danger Higher CO emissions can lead to poisoning. Measure the CO value before and after any work on gas equipment to prevent any health hazards and to ensure the perfect operational condi- tion of the system.
  • Page 14 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) 6. Check the supply (flow) pressure; it should be & 20 mbar for natural gas, & 50 mbar for LPG. Note Use suitable test equipment with a resolution of at least 0.1 mbar to measure the supply pressure.

  • Page 15: Checking The Co 2 Settings

    (cont.) Checking the CO settings Vitodens 333 is set up in the factory for natural gas E, and can be converted to natural gas LL or LPG P using a conversion kit. During commissioning or maintenance, check the CO level at the boiler adap- tor.
  • Page 16 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) 1. Connect a flue gas analyser at the flue gas aperture A on the boiler adaptor. 2. Open the gas shut-off valve, com- mission the boiler and create a heat demand.

  • Page 17: Setting The Max. Output

    Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) 7. Check the CO content. Should the actual value deviate by more than 1 % from the above range, imple- ment steps from page 15 (possibly replace the burner). 8.

  • Page 18: Checking The Balanced Flue System For Soundness (Annular Gap Check)

    Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Checking the balanced flue system for soundness (annular gap check) For balanced flue systems tested together with the gas fired wall mounted boiler, some Federal States (e.g. Northrhein-Westphalia) waive the requirement for a soundness test (overpressure test) during commis- sioning by the flue gas inspector.

  • Page 19: Removing The Burner And Checking The Burner Gasket (Replace Gasket Every Two Years)

    Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Removing the burner and checking the burner gasket (replace gasket every two years) 5. Release four nuts H and remove 1. Switch OFF the control unit ON/ OFF switch and the mains electri- the burner.

  • Page 20: Checking The Burner Gauze Assembly

    Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Checking the burner gauze assembly Replace the burner gauze assembly if the wire mesh is damaged. 1. Remove electrodes A. 5. Insert a new burner gauze assem- bly with a new gasket, and secure 2.

  • Page 21: Checking And Adjusting The Ignition And Ionisation Electrodes

    Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Checking and adjusting the ignition and ionisation electro- A Ignition electrodes B Ionisation electrode 1. Check the electrodes for wear and 3. Check all clearances. If the gaps contamination. are not as specified or the electro- des are damaged, replace and 2.
  • Page 22 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Cleaning the combustion chamber/Cleaning the heating sur- faces and installing the burner 1. If required, clean combustion chamber and heating surfaces A with a brush or flush with water. Important information Scratches on parts which are in contact with flue...
  • Page 23 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) 4. Check the gas connections for soundness. Danger Escaping gas leads to a risk of explosion. Check all fittings for sound- ness. 5. Connect the electrical cables/leads to each corresponding component. Checking the condensate drain and cleaning the siphon 1.
  • Page 24 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) 1. Remove cover A. 2. Pull earth cable B from connecting tab C. 3. Connect the test equipment (up to 5 mA) in series between connecting tab C and earth cable B. &...
  • Page 25 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) 5. Remove hard deposits that cannot be removed by a high pressure cleaner, with a chemical cleaning agent. Important information Never use hydrochloric cleaning agents. 6. Thoroughly flush the DHW cylinder after cleaning.
  • Page 26 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Checking all gas equipment for soundness at operating pres- sure Danger Escaping gas leads to a risk of explosion. Check gas equipment for soundness. Checking the ionisation current 1. Pull the line off and connect test equipment (adaptor line available as accessory).
  • Page 27 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) 4. After testing, press d. 5. Record the actual value in the ser- vice report. Matching the control unit to the heating system Note The control unit must be matched to the system equipment. Various system components are automatically recognised by the control unit, and codes are automatically set.
  • Page 28 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Required coding Address Operation with natural gas (as delivered condition) 1E:0 Operation with LPG 1E:1 System design 2 With one heating circuit with mixer M2 and low loss header Outside temperature sensor Low loss header Flow temperature sensor...
  • Page 29 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Required coding Address Operation with LPG 1E:1 System design 3 With one heating circuit without mixer A1 and one heating circuit with mixer M2 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.
  • Page 30 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Required coding Address Operation with LPG 1E:1 System design 4 With one heating circuit without mixer A1 and one heating circuit with mixer M2 with system separation Outside temperature sensor Extension kit for one heating cir- Flow temperature sensor cuit with mixer...
  • Page 31 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) System design 5 With one heating circuit with mixer M2 (with extension kit), one heating cir- cuit with mixer (with Vitotronic 050) and low loss header Outside temperature sensor Extension kit for one heating cir- Flow temperature sensor cuit with mixer...
  • Page 32 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Connecting the control unit to the LON system (only for weather-compensated control units) The LON communication module (accessory) must be plugged in. Installation instructions LON communication module Note Data transfer via the LON system can take 2 to 3 minutes. Setting up LON user numbers Adjust the user number via coding In a LON system, the same number...
  • Page 33 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Boiler control Vitotronic 050 Vitotronic 050 Vitocom unit Sent time via LON Time received via Time received via Time received Code 7b: 1 via LON Set code 81: 3 Set code 81: 3 —...
  • Page 34 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) 5. Press L and d simultaneously for approx. 1 second. User check completed. Adjusting heating curves (only for weather-compensated control units) The heating curves illustrate the rela- Settings in the delivered condition: &...
  • Page 35 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) Changing slope and level 1. Modify the slope in code 1 with cod- ing address d3 (see page 39). Adjustable value 2 to 35 (equals slope 0.2 to 3.5). 2.
  • Page 36 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) 2. Adjust the set day temperature with rotary selector ts. The value will be automatically adopted after approx. 2 seconds. Accordingly, the heating curve is adjusted along set room tempera- ture axis C, which results in modi- fied start/shutdown characteristics of the heating circuit pumps, if the...
  • Page 37 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) 2. Call up the set night temperature with E. 3. Change this value with a and b. 4. Confirm the set value with d. Example 2: Modifying the reduced room temperature from 5 °C to 14 °C A Boiler water or flow temperature in °C...
  • Page 38 Initial start-up, inspection, maintenance Further details regarding the individual steps (cont.) 1. Press c. After maintenance has been carried Maintenance scan is activated. 2. Scan maintenance messages 1. Reset code 24:1 to 24:0. with a or b. The red fault indicator is extin- guished.

  • Page 39: Coding

    Coding Code 1 Call up code 1 1. Press K and L simultaneously 3. Change this value with a and b; confirm with d. The display briefly for approx. 2 seconds. shows "adopted", then the address 2. Select the required coding address flashes again.

  • Page 40: Coding Code 1

    Coding Code 1 (cont.) Coding in Function mode Coding Possible change the as change delivered Address: condition value Address: value Gas type 1E:0 Operation with natural 1E:1 Operation with LPG Venting/filling 2F:0 Ventilation program/fill- 2F:1 Venting program active ing program inactive 2F:2 Filling program active User no.

  • Page 41: Code 2

    Coding Code 1 (cont.) Coding in Function mode Coding Possible change the as change delivered Address: condition value Address: value Max. flow. temp. M2 C6:75 Electronic maximum C6:1 Maximum limit adjustable flow temperature limit at from 1 to 127 °C 75 °C C6:127 Slope A1...

  • Page 42: Overall Summary

    Coding Code 2 (cont.) 4. Press L and G simultaneously for approx. 1 second. Coding is terminated. Overall summary The coding addresses are grouped in accordance with the following function ranges. The respective function range is displayed. Scroll through the ranges in the following sequence with a or b. Function range Coding addresses System design...
  • Page 43 Coding Code 2 (cont.) Codes Coding in Function mode Coding Possible change the as change delivered Address: condition value Address: value System design 00 :2 System design 1: 00 :4 System design 2, 5: 1 heating circuit without 1 mixer circuit M2, with mixer A1, with DHW DHW heating heating...
  • Page 44 Coding Code 2 (cont.) Coding in Function mode Coding Possible change the as change delivered Address: condition value Address: value 25:0 No recognition of out- 25:1 Recognition of outside side temperature sen- temperature sensor and sor or remote fault monitoring monitoring (only in i) 28:0 No burner interval igni-...
  • Page 45 Coding Code 2 (cont.) Coding Internal Heating cir- Heating circuit Cylinder loading circula- cuit pump pump pump tion pump Heating cir- Heating circuit cuit without with mixer mixer Control Control funct. OFF Control funct. funct. Control Control funct. OFF funct. Control Control funct.
  • Page 46 Coding Code 2 (cont.) Coding Internal Heating cir- Heating cir- Cylinder loading pump circulation cuit pump cuit pump pump Heating cir- Heating cir- cuit without cuit with mixer mixer Control Control Control funct. Control funct. funct. funct. Control Control Control funct. OFF funct.
  • Page 47 Coding Code 2 (cont.) Coding Internal Heating cir- Heating cir- Cylinder loading pump circulation cuit pump cuit pump pump Heating cir- Heating cir- cuit without cuit with mixer mixer Control funct. OFF Control funct. Coding in Function mode Coding Possible change the as change delivered...
  • Page 48 Coding Code 2 (cont.) Coding in Function mode Coding Possible change the as change delivered Address: condition value Address: value 59:0 DHW cylinder loading: 59:1 Starting point adjustable Starting point -2.5 K from 1 to 10 K below the Stopping point +2.5 K 59:10 set value 60:10...
  • Page 49 Coding Code 2 (cont.) Coding in Function mode Coding Possible change the as change delivered Address: condition value Address: value 71:0 DHW circulation 71:1 OFF during DHW loading pump: According to to set value 1 DHW time program: ON 71:2 ON during DHW loading (Vitotrol 300 enables to set value 1...
  • Page 50 Coding Code 2 (cont.) Coding in Function mode Coding Possible change the as change delivered Address: condition value Address: value 7F:1 Detached house 7F:0 Multi-occupancy house Separate adjustment for holiday program and time program for DHW load- ing, as option 80:1 With 5 seconds time 80:0...
  • Page 51 LON BUS to any connected Vitotro- nic 050. 98:1 Viessmann system 98:1 System number adjusta- numbers (in conjunction ble from 1 to 5 with monitoring of sev- 98:5...
  • Page 52 Coding Code 2 (cont.) Coding in Function mode Coding Possible change the as change delivered Address: condition value Address: value 9C:20 Monitoring LON users 9C:0 No monitoring When there is no 9C:5 Time adjustable from 5 to response from a user, 60 minutes values defaulted inside 9C:60...
  • Page 53 Coding Code 2 (cont.) Coding in Function mode Coding Possible change the as change delivered Address: condition value Address: value A3:2 Outside temperature A3:-9 Heating circuit pump ON/ below 1 °C: Heating cir- OFF (see the following cuit pump ON A3:15 table) Outside temperature...
  • Page 54 Coding Code 2 (cont.) Coding in Function mode Coding Possible change the as change delivered Address: condition value Address: value Boiler circuit, mixer circuit A4:0 With frost protection A4:1 No frost protection, adjustment only possible if code "A3 : -9" is selected.
  • Page 55 Coding Code 2 (cont.) Parameter address With heating circuit pump logic function: Heating A5:... circuit pump OFF, if AT > RT - 1 K AT > RT - 9 K Coding in Function mode Coding Possible change the as change delivered Address: condition...
  • Page 56 Coding Code 2 (cont.) Coding in Function mode Coding Possible change the as change delivered Address: condition value Address: value A7:0 Without mixer econ- A7:1 With mixer economy omy function function (extended heat- ing circuit pump logic): Heating circuit pump also OFF, if the mixer was closed for longer than 20 minutes.
  • Page 57 Coding Code 2 (cont.) Coding in Function mode Coding Possible change the as change delivered Address: condition value Address: value b0:0 With remote control: b0:1 Heating mode: Weather- Heating mode/reduced compensated mode: Weather-com- Reduced mode: With room temperature hook- pensated b0:2 Heating mode: With room temperature hook-up...
  • Page 58 Coding Code 2 (cont.) Parameter With heating circuit pump logic function: Heating cir- address b5:... cuit pump OFF, if active RT > RT - 1 K; passive RT < RT - 2 K Actual Actual active RT > RT - 2 K; passive RT <...
  • Page 59 Coding Code 2 (cont.) Coding in Function mode Coding Possible change the as change delivered Address: condition value Address: value No display correction of E2:99 Display correction +4.9 K the actual room tem- perature E5:0 Without variable E5:1 With variable speed cir- speed circuit pump cuit pump;...
  • Page 60 Coding Code 2 (cont.) Coding in Function mode Coding Possible change the as change delivered Address: condition value Address: value must contain the follow- ing heat-up details: & Heat-up data with respective flow tem- peratures & Max. flow temperature achieved &...

  • Page 61: Resetting The Coding To The As Delivered Condition

    Coding Code 2 (cont.) Coding in Function mode Coding Possible change the as change delivered Address: condition value Address: value 20 minutes F6:0 In the "DHW only" F6:1 In the "DHW only" operat- operating mode, the ing mode, the internal cir- internal circulation F6:24 culation pump will be...

  • Page 62: Service Scans

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

  • Page 63: Temperatures, Boiler Coding Card And Brief Scans

    Service scans Temperatures, boiler coding card and brief scans Weather-compensated control unit 1. Press K and G simultaneously 2. Select the required scan with a and b. for approx. 2 seconds. 3. Press d. The following values can be scanned, subject to the actual equipment level: Slope A1 –...
  • Page 64 Service scans Temperatures, boiler coding card and brief scans (cont.) Display screen Brief scan System design 1 to Display Max. demand temperature KM BUS Display in accor- users dance with the rele- vant design Software Software Software Software Software version version version version...
  • Page 65 Service scans Temperatures, boiler coding card and brief scans (cont.) Display screen Brief scan Heating circuit 1 Heating circuit 2 (boiler circuit A1) (mixer circuit M2) Remote Software Remote Software control version control version 0: excl. Remote 0: excl. Remote 1: Vito- control 1: Vito-...
  • Page 66 Service scans Temperatures, boiler coding card and brief scans (cont.) Display screen Brief scan System Software version Software design, dis- Control unit version play in Operating accordance interface with the design Software Software version Software Software version Burner control unit version ext.

  • Page 67: Testing Outputs (Relay Test)

    Service scans Temperatures, boiler coding card and brief scans (cont.) Display screen Brief scan Variable Software speed version pump variable 0: excl. speed pump 1: Wilo 2: Grund- Testing outputs (relay test) Weather-compensated control unit 1. Press K and d simultaneously 2.
  • Page 68 Service scans Testing outputs (relay test) (cont.) Display Explanations Solar pump ON Vitosolic Constant temperature control units 1. Press K and d simultaneously 2. Select the relay outputs with a and b. for approx. 2 seconds. Relay test is activated. 3.

  • Page 69: Scanning Operating Conditions And Sensors

    Service scans Scanning operating conditions and sensors Weather-compensated control unit 1. For two heating circuits – select 2. Press c. heating circuit: Press a. & 3. Select the required operating con- dition scan with a or b. 1r flashes on the display. &...
  • Page 70 Service scans Scanning operating conditions and sensors (cont.) Operating condition display Explanations (subject to system equip- ment level) Date Burner OFF or ON Int. pump OFF or ON Output 20 Int. output OFF or ON Internal extension Heating pump OFF or ON External extension or extension kit for one heat- ing circuit with mixer installed Cylinder loading pump OFF...
  • Page 71 Service scans Scanning operating conditions and sensors (cont.) Operating condition display (sub- Explanations ject to system equipment level) 030529 Burner starts 001417 Hours run - solar circuit pump 002850 Solar energy in kW/h...

  • Page 72: Troubleshooting

    Troubleshooting Call up fault history of fault codes The last 10 faults are saved and may be called up. 1. Press G and d simultaneously for approx. 2 seconds. 2. Call up the individual fault codes with a or b. Order in which Fault code fault codes...
  • Page 73 Troubleshooting Call up current fault codes (cont.) Control unit faults 1. Find current fault with c. 2. Select additional fault codes with a and b. 3. Acknowledge fault The fault can be acknowledged with d. The fault message in the display will be hidden, but red fault indicator A continues to flash.

  • Page 74: Checking And Acknowledging Faults

    Troubleshooting Call up current fault codes (cont.) 4. E in the display indicates that the burner control unit is locked out. After the fault has been removed, acknowledge by pressing reset E. Fault display design Fault display in plain text &...
  • Page 75 Troubleshooting Checking and acknowledging faults (cont.) Note The fault can be acknowledged with d. The fault message in the dis- play will be hidden, but the red fault indicator U continues to flash. A new fault message will be displayed if an Constant temperature control units acknowledged fault is not removed by the following morning.
  • Page 76 Troubleshooting Checking and acknowledging faults (cont.) Fault code Const. Weat- System Cause Remedy in the dis- character- play comp. istics Burner Boiler temperature Check the blocked sensor shorted out boiler tem- perature sen- sor (see page 85) Boiler temperature sensor lead break Mixer Heating circuit M2 Check the...
  • Page 77 Troubleshooting Checking and acknowledging faults (cont.) Fault code Const. Weat- System Cause Remedy in the dis- character- play comp. istics Cylinder tempera- ture sensor lead break Control Solar control unit See solar mode error message control unit service instructions Control Faulty operating Replace mode...
  • Page 78 Troubleshooting Checking and acknowledging faults (cont.) Fault code Const. Weat- System Cause Remedy in the dis- character- play comp. istics Control Communication Check con- mode with- fault - Vitotrol nections, out remote remote control cable, coding control heating circuit A1 address A0 and the remote con-...
  • Page 79 Troubleshooting Checking and acknowledging faults (cont.) Fault code Const. Weat- System Cause Remedy in the dis- character- play comp. istics Control Communication Check coding mode, fault - variable address E5 max. pump speed heating cir- settings; speed cuit pump, heating check the circuit M2 heating cir-...
  • Page 80 Troubleshooting Checking and acknowledging faults (cont.) Fault code Const. Weat- System Cause Remedy in the dis- character- play comp. istics Room temperature Check the sensor heating cir- room tem- cuit A1 lead break perature sen- sor - heating circuit A1 Heating circuit M2 Check the room temperature...
  • Page 81 Troubleshooting Checking and acknowledging faults (cont.) Fault code Const. Weat- System Cause Remedy in the dis- character- play comp. istics Burner in Temperature limiter Check the fault state has responded heating sys- tem water level. Check the circula- tion pump. Vent the heat- ing system.
  • Page 82 Troubleshooting Checking and acknowledging faults (cont.) Fault code Const. Weat- System Cause Remedy in the dis- character- play comp. istics Burner Differential pres- Check the dif- blocked sure sensor faulty ferential pres- sure sensor and lead. Burner in Fuel valve closes Check gas fault state too late...
  • Page 83 Troubleshooting Checking and acknowledging faults (cont.) Fault code Const. Weat- System Cause Remedy in the dis- character- play comp. istics Burner Strong interference Remove EMC blocked (EMC) field nearby; interference. alternatively boiler If the equip- coding card or ment will not main PCB faulty restart, check the boiler...

  • Page 84: Repairs

    Troubleshooting Repairs Checking the outside temperature sensor (weather-compen- sated control unit) 1. Pull plug X3 from the control unit. 2. Test the resistance of the outside temperature sensor across term- inals X3.1 and X3.2 on the pulled plug and compare with the curve. 3.
  • Page 85 Troubleshooting Repairs (cont.) Check the boiler temperature sensor, cylinder temperature sensor or the flow temperature sensor for low loss header 1. Boiler temperature sensor: Pull the leads from boiler temperature sensor A and measure the resis- tance. Cylinder temperature sensor: Pull the plug % from the cable harness on the control unit and measure the resistance.
  • Page 86 Troubleshooting Repairs (cont.) 2. Check the sensor resistance and compare actual values with the curve. 3. Replace the sensor in case of severe deviation. Danger The boiler temperature sen- sor is immersed in the heat- ing water (risk of scalding). Drain the boiler before repla- cing the sensor.
  • Page 87 Troubleshooting Repairs (cont.) 3. Replace the sensor in case of severe deviation. Danger The loading temperature sensor is immersed in the heating water (risk of scald- ing). Drain the boiler before repla- cing the sensor. Checking the flue gas temperature sensor The flue gas temperature sensor locks out the boiler when the permissible flue gas temperature is exceeded.
  • Page 88 Troubleshooting Repairs (cont.) 1. Pull the leads from the flue gas temperature sensor A . 2. Check the sensor resistance and compare actual values with the curve. 3. Replace the sensor in case of severe deviation.
  • Page 89 Troubleshooting Repairs (cont.) Checking plate heat exchanger 1. Shut off and drain the boiler on the 5. Check the secondary side for scal- primary and the secondary side. ing and, if necessary, replace the plate heat exchanger. 2. Release the side closures and pivot the control unit forward.
  • Page 90 Troubleshooting Repairs (cont.) Checking the thermocouple If the burner control unit cannot be reset after a fault shutdown, although the boiler water temperature is below approx. 90 °C: & Pull the leads from thermocouple A. & Check the continuity of the thermo- couple with a multimeter.
  • Page 91 Troubleshooting Repairs (cont.) 1. Pull off the electrical plug A. Checking O-rings: 2. Remove sensor B by pulling it upwards. 3. Ensure that both O-ringsC are properly inserted into aperture adaptor retainers D. 4. Insert the sensor with connection nipples into the gas combination valve adaptor and push in until it clicks into place.
  • Page 92 Troubleshooting Repairs (cont.) Checking the fuse 3. Remove cover A. 1. Switch OFF the mains power. 2. Release the lateral closures and 4. Check fuse F1. pivot the control unit down.
  • Page 93 Troubleshooting Repairs (cont.) Extension kit for heating circuit with mixer Checking the rotational direction of the mixer motor 1. Switch OFF the motor and restart it at the main ON/OFF switch. The device will carry out the following self-test: & Mixer close (150 seconds) &...
  • Page 94 Troubleshooting Repairs (cont.) Checking Vitotronic 050 (accessory) Vitotronic 050 is connected with the control unit via the LON system. To test the connection, implement a user check on the boiler control unit (see page 33).

  • Page 95: Function Description

    Function description Constant temperature control unit Heating mode The cylinder is then loaded up to the The set boiler water temperature will set DHW temperature. Heating stops be maintained in the Central heating when the set temperature has been and DHW heating G program, when reached at the cylinder temperature a demand is raised by the room tem- sensor and at the loading temperature...
  • Page 96 Function description Constant temperature control unit (cont.) A Heating programs F Setting values B Comfort mode G DHW temperature C Information H Emissions test function D Basic settings K Boiler water temperature E Confirmation/acknowledgement...

  • Page 97: Weather-Compensated Control Unit

    Function description Weather-compensated control unit Heating mode The control unit determines a set boi- The cylinder is then loaded up to the ler water temperature subject to out- set DHW temperature. Heating stops side temperature or room temperature when the set temperature has been (if a room temperature-dependent reached at the cylinder temperature remote control is connected) and the...
  • Page 98 Function description Weather-compensated control unit (cont.) A Heating circuit time program H Party mode B DHW time program K Basic settings L Confirmation/acknowledgement and DHW circulation (if connected M Setting values to the control unit) C Holiday program N DHW temperature D Information O Emissions test function E Heating programs...

  • Page 99: Internal Extension H1

    Function description Internal extension H1 Internal extension H1 The internal extension is integrated An external safety valve can be con- nected to connection gD. into the control unit housing. The cylinder loading pump is connected to the relay output sK.

  • Page 100: Extensions For External Connections (Accessory)

    Function description Extensions for external connections (accessory) Internal extension H2 The internal extension is integrated Set coding address 53 to 3. into the control unit housing. The An interlock for extractors can be con- nected to connection aBJ. cylinder loading pump is connected to relay output sK.

  • Page 101: External Extension H

    Function description Extensions for external connections (accessory) (cont.) External extension H1 & The external extension is connected External blocking to the boiler control unit via the KM (terminals 2 - 3) & BUS. The following functions can be External demand controlled or processed via this exten- (terminals 1 - 2) &...
  • Page 102 Function description Extensions for external connections (accessory) (cont.) External extension H2 & The external extension is connected External blocking to the boiler control unit via the KM (terminals 2 - 3) & BUS. The following functions can be External demand controlled or processed via this exten- (terminals 1 - 2) &...

  • Page 103: Control Functions

    Function description Control functions External operating mode changeover The function External operating mode changeover is connected via input aVD of the external extension. With coding address 91 you can select, for which heating circuit the changeover of operating mode should apply: Coding Changeover of operating mode applies 91:0...
  • Page 104 Function description Control functions (cont.) The changeover of operating mode remains active as long as the contact remains closed, but no less than the default duration selected with coding address F2. External blocking The function External blocking is con- In coding address 32 you can select nected via input aVD of the external the influence the signal Ext.
  • Page 105 Function description Control functions (cont.) Filling program Note The diverter valve can be moved into Close the gas shut-off valve when its central position via coding address operating the filling program. 2F:2. The system can be filled com- pletely, if the control unit is switched In the delivered condition, the diverter OFF in this position.
  • Page 106 Function description Control functions (cont.) Temperature profile: Diagram 1 (DIN 4725 part 4) code F1:1 Temperature profile: Diagram 2 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 settings code F1:6 to F1:15...

  • Page 108: Designs

    Designs Connection and wiring diagrams – internal connections Main PCB Cylinder temperature sensor § Boiler temperature sensor Loading temperature sensor...
  • Page 109 Designs Connection and wiring diagrams – internal connectio . . . (cont.) Ionisation electrode Ignition unit a-Ö Fan motor Flue gas temperature sensor dÖ aNF Air pressure sensor Step motor for diverter valve Thermocouple...

  • Page 110: Connection And Wiring Diagrams - External Connections

    Designs Connection and wiring diagrams – external connections Main PCB Optolink Mains supply unit Burner control unit...
  • Page 111 Designs Connection and wiring diagrams – external connectio . . . (cont.) Operating interface Cylinder temperature sensor sÖ Coding card Internal circulation pump Connection adaptor Loading pump LON communication module Gas solenoid valve fÖ Internal extension H1 or H2 Power supply ON/OFF switch Mains power supply - acces- Reset button...

  • Page 112: Parts Lists

    Parts lists Parts lists Spare parts information Quote the type 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 Heat exchanger connection pipe 036 Plate heat exchanger with gaskets 037 Gasket set - plate heat exchan-...

  • Page 113: Type Plate

    Parts lists Parts lists (cont.) 153 Flue gas temperature sensor 039 Heat conducting paste 154 Thermocouple 062 Burner maintenance set 155 Temperature sensor 063 Set of small burner parts 200 Side panel 115 Adaptor - ionisation current test 201 Front top panel cable 202 Rear panel, top 116 Cable harness X8/X9...
  • Page 114 Parts lists Parts lists (cont.)
  • Page 115 Parts lists Parts lists (cont.)
  • Page 116 Parts lists Parts lists (cont.)
  • Page 117 Parts lists Parts lists (cont.)
  • Page 118 Parts lists Parts lists (cont.)
  • Page 119 Parts lists Parts lists (cont.)

  • Page 120: Commissioning/Service Reports

    Commissioning/service reports Commissioning/service reports Setting and test values Set value Initial start-up Date: Static pressure mbar max. 57.5 mbar Supply pressure (flow pressure) = for natural gas E mbar 17.4 to 57.5 mbar = for natural gas LL mbar 17.4 to 57.5 mbar = for LPG mbar...
  • Page 121 Commissioning/service reports Commissioning/service reports (cont.) Maintenance/ser- Maintenance/ Maintenance/ Maintenance/ser- vice service service vice...
  • Page 122 Commissioning/service reports Commissioning/service reports (cont.) Setting and test values Set value Maintenance/ service Date: Static pressure mbar max. 57.5 mbar Supply pressure (flow pressure) = for natural gas E mbar 17.4 to 57.5 mbar = for natural gas LL mbar 17.4 to 57.5 mbar = for LPG...
  • Page 123 Commissioning/service reports Commissioning/service reports (cont.) Maintenance/ser- Maintenance/ Maintenance/ Maintenance/ser- vice service service vice...
  • Page 124 Commissioning/service reports Commissioning/service reports (cont.) Setting and test values Set value Maintenance/ service Date: Static pressure mbar max. 57.5 mbar Supply pressure (flow pressure) = for natural gas E mbar 17.4 to 57.5 mbar = for natural gas LL mbar 17.4 to 57.5 mbar = for LPG...
  • Page 125 Commissioning/service reports Commissioning/service reports (cont.) Maintenance/ser- Maintenance/ Maintenance/ Maintenance/ser- vice service service vice...

  • Page 126: Specification

    Specification Specification Rated voltage: 230 V~ Electronic tempera- 82 °C Rated frequency: 50 Hz ture limiter setting: Rated current : 6.3 A~ Temperature limiter 100 °C (fixed) Safety class: setting: Protection level: IP X 4 D to Mains fuse: Max. 16 A EN 60529 Power consumption Permissible ambient temperature...

  • Page 127: Certificates

    Certificates Declaration of conformity Declaration of conformity for Vitodens 333 We, Viessmann Werke GmbH & Co KG, D-35107 Allendorf, declare as sole responsible body, that the product Vitodens 333 conforms to the following stan- This product is designated in accor-...

  • Page 128: Manufacturer's Certificate According To The 1St Bimschv [Germany]

    Certificates Manufacturer's certificate according to the 1st BImSchV [Germany] We, Viessmann Werke GmbH & Co KG, D-35107 Allendorf, confirm that the fol- lowing product meets the NO limits specified by 1st BImSchV Paragraph 7 (2) [Germany]: Vitodens 333 Allendorf, 14.01.04 Viessmann Werk GmbH&Co KG...

  • Page 129: Keyword Index

    Keyword index Keyword index Adjusting the room temperature Fault history ........Fault message .
  • Page 130 Keyword index Keyword index (cont.) Operating mode changeover Safety chain ........Outside temperature sensor Scanning .
  • Page 132 Applicability Compact gas fired condensing boi- Type WS3A 6.6 to 26 kW from serial no. 7177 362 3 00001 Viessmann Limited Hortonwood 30, Telford, TF1 7YP, GB Telephone: +44 1952 675000 Fax: +44 1952 675040 www.viessmann.co.uk...

This manual is also suitable for:

Ws3aVitodens 333 ws3a

Table of Contents