Viessmann Vitoladens 300-C Service Instructions Manual
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Viessmann Vitoladens 300-C Service Instructions Manual

Oil condensing boiler
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See also: Technical Manual , Instruction and Installation Manual
VIESMANN
Service instructions
for contractors
Vitoladens 300-C
Type VC3, 12.9 to 28.9 kW
Oil condensing boiler
with integral boiler control unit
For applicability, see the last page
VITOLADENS 300-C
Please keep safe.
5692 774 GB
11/2009

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  • Page 1 VIESMANN Service instructions for contractors Vitoladens 300-C Type VC3, 12.9 to 28.9 kW Oil condensing boiler with integral boiler control unit For applicability, see the last page VITOLADENS 300-C Please keep safe. 5692 774 GB 11/2009...

  • Page 2: Safety Instructions

    Safety instructions Safety instructions Please follow these safety instructions closely to prevent accidents and mate- rial losses. Safety instructions explained ■ all current safety regulations as defined by DIN, EN, DVGW, TRGI, Danger TRF, VDE and all locally applicable This symbol warns against the standards, risk of injury.
  • Page 3 ■ When using gas as fuel, also close the For replacements, use only orig- main gas shut-off valve and safeguard inal spare parts from Viessmann against unauthorised reopening. or those which are approved by ■ Isolate the system from the power sup- Viessmann.

  • Page 4: Table Of Contents

    Index Index Commissioning, inspection, maintenance Steps - commissioning, inspection and maintenance.......... Further details regarding the individual steps............Codes Code 1........................37 Code 2........................40 Resetting codes to their delivered condition............54 Service scans Service level overview ..................55 Temperatures, boiler coding card and brief scans ..........55 Checking outputs (relay test)................

  • Page 5: Commissioning, Inspection, Maintenance

    Commissioning, inspection, maintenance Steps - commissioning, inspection and maintenance For further information regarding the individual steps, see the page indicated Commissioning steps Inspection steps Maintenance steps Page • 1. Filling the heating system..........• • • 2. Checking all connections on the heating water side for leaks •...
  • Page 6 Commissioning, inspection, maintenance Steps - commissioning, inspection and… (cont.) Commissioning steps Inspection steps Maintenance steps Page • • 22. Checking the neutralising system (accessories)..23 • • 23. Checking the active charcoal filter (accessories)..23 • • • 24. Checking the diaphragm expansion vessel and system pressure •...

  • Page 7: Further Details Regarding The Individual Steps

    ■ Only use fill water of potable quality. ■ Soften fill water with hardness exceeding 16.8 °dH (3.0 mol/m ), e.g. using a small softening system for heating water (see Viessmann Vitoset price list). ■ An antifreeze additive suitable for heating systems can be mixed with the fill water.

  • Page 8: Venting The Boiler

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Venting the boiler 1. Close the shut-off valves on the heat- 4. Open valves B and C and vent ing water side. using mains pressure until no more air noise is audible. 2.

  • Page 9: Draining The Heating System (If Required)

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Draining the heating system (if required) A Drain valve Filling the siphon or neutralising system (accessory) with water...

  • Page 10: Setting The Time And Date (If Required)

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Pull the supply hose A (siphon or neu- tralising system) from the boiler conden- sate drain B and fill with a little water. Setting the time and date (if required) 2.

  • Page 11: Changing The Language At The Control Unit

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Changing the language at the control unit Note Press the following keys: When the unit is first taken into operation the display is in German (default lan- 1. c "Heizkreis wählen" (select guage setting): heating circuit) is displayed.
  • Page 12 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Fan starts after no Fault Check the oil pre- more than heater, fan, cables 10 min. and plug-in con- Green LED on nectors ignition trans- (the oil preheater former flashes. has not switched through;...

  • Page 13: Removing The Front Panel

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Burner in opera- tion. The green LED on the ignition trans- former is perma- nently on (a flame is recognised). For further details regarding faults, see page 61. Removing the front panel...

  • Page 14: Opening The Boiler Door

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Opening the boiler door 1. Remove cables running to the fan 2. Remove screws and open the boiler A from their retainers. door. Cleaning the heating surfaces Please note To prevent damage to the heat exchanger, only clean with the cleaning equipment available as accessory Danger Cleaning work may lead to eye injuries.
  • Page 15 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) 1. Clean the biferral heating surface 2. Clean the biferral heating surface and (front area) with brush A. the stainless steel heat exchanger with a vacuum cleaner. Angled noz- zle B is available as an accessory.
  • Page 16 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) 3. Pull condensate hose E from the 6. Check the condensate drain and boiler. hose E for contamination. Clean with a bottle brush, if required. 4. Push on-site hose D on the connec- Never damage the hose with the brush.

  • Page 17: Closing The Boiler Door

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) 7. Reconnect condensate hose E. 8. Insert combustion chamber to the end-stop. Closing the boiler door...

  • Page 18: Cleaning The Burner

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Cleaning the burner 1. Undo screws, remove the lid with 2. Pull the cables from the oil preheater mixing facility B and secure in the A and the ignition electrodes E. maintenance position.

  • Page 19: Replacing The Nozzle And Checking Or Adjusting The Ignition Electrodes

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Replacing the nozzle and checking or adjusting the ignition elec- trodes 2.5 mm 1. Undo nozzle F whilst holding the oil 3. Insert rifling facility D as far as pos- preheater.

  • Page 20: Burner Installation

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) 4. Secure Allen screw C of the rifling Please note An incorrectly adjusted nozzle facility. Check nozzle gap "a". gap "a" can result in irregular operation of the burner and even a fault shutdown.

  • Page 21: Checking Gaskets And Thermal Insulation Components

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Suntec oil pump, type ATE2 A Filter (clean or replace) C O-rings (replace) B Flat gasket (replace) D Cover Checking gaskets and thermal insulation components 1. Check gaskets and the packing cord 3.
  • Page 22 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Removing side panels (only required for maintenance work)

  • Page 23: Checking Electrical Connections For Tightness 21. Checking The Condensate Drain And Cleaning The Siphon (If Installed)

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Note Refit in reverse order. Checking the condensate drain and cleaning the siphon (if instal- led) 1. Check at siphon (see page 9), that 3. Fill the siphon with water. the condensate can freely drain off.
  • Page 24 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Standard burner settings Note Check that the service instructions are valid for the relevant burner (see applicability on the last page and the serial no. on the boiler type plate). A Flue gas test port Rated output 12.9/19.3...

  • Page 25: Adjusting The Oil Pressure And Checking The Vacuum

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Rated output 12.9/19.3 16.1/23.5 19.3/28.9 Nozzle gap +0.2/-0.3 +0.2/-0.3 +0.2/-0.3 "a" (see page 19) Note Due to nozzle tolerances and varying oil characteristics, the oil pressure may vary from the values shown. Please note An incorrectly adjusted nozzle gap "a"...

  • Page 26: Adjusting The Air Volume (Static Burner Pressure)

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) 5. If required, adjust the oil pressure for stage 1 at pressure adjusting screw C of the oil pump (for standard val- ues, see page 24). 6. Check the actual emission values after adjusting the oil pressure.

  • Page 27: Fitting The Front Panel

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) 7. Repeat steps 4 and 5 for burner stage 10. Seal test connector A again with the previously removed plug. 8. Check the set values. Note Do not seal the connector next to 9.
  • Page 28 Further details regarding the individual steps (cont.) System version 1 One heating circuit without mixer A1 (with/without DHW heating) 1 Vitoladens 300-C 5 DHW circulation pump 2 Circulation pump for cylinder heat- 6 Outside temperature sensor 7 Heating circuit without mixer A1...
  • Page 29 System version 2 One heating circuit without mixer A1 and one heating circuit with mixer M2 (with/without DHW heating) 1 Vitoladens 300-C 9 Heating circuit with mixer M2 2 Circulation pump for cylinder heat- qP Temperature limiter for limiting the...

  • Page 30: Adjusting The Heating Curves

    System version 3 One heating circuit without mixer A1 and one heating circuit with mixer M2 with system separation (with/without DHW heating) 1 Vitoladens 300-C qP Temperature limiter for limiting the 2 Circulation pump for cylinder heat- maximum temperature of underfloor...
  • Page 31 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Slope -5 -10 -15 -20 Outside temperature in °C A Heating curve slope for underfloor heating systems B Heating curve slope for low temper- ature heating systems (according to the Energy Savings Order [Ger- many])
  • Page 32 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Changing the slope and level Adjusting the set room temperature Standard room temperature Outside temperature in °C Example 1: Adjustment of standard room A Changing the slope temperature from 20 to 26 °C B Changing the level (vertical parallel A Boiler water temperature or flow offset of the heating curve)

  • Page 33: Linking The Control Unit To The Lon

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) C Set room temperature in °C 5. Adjust the set day temperature with rotary selector "ts". D Heating circuit pump "OFF" The value will be automatically accep- E Heating circuit pump "ON" ted after approx.
  • Page 34 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Note In the same LON system, the same num- ber cannot be allocated twice. Only one Vitotronic may be program- med as fault manager. Boiler control unit Vitotronic 200-H Vitotronic 200-H Vitocom Subscriber no.

  • Page 35: Instructing The System User

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Carrying out a subscriber check Communication with the system devices connected to the fault manager is tested with a subscriber check. Preconditions: 2. a/b for the required sub- ■ The control unit must be programmed scriber.

  • Page 36: Scanning And Resetting The "Service" Display

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Scanning and resetting the "Service" display The red fault indicator flashes when the limits set via coding address "21" and "23" have been reached. "Service" flashes in the programming unit display. Note Set coding address "24:1"...

  • Page 37: Codes

    Codes Code 1 Calling up code 1 Note 4. a/b for the selected value Codes are displayed as plain text. Codes that are irrelevant (due to the heating 5. d to confirm; the display system equipment level or the setting of briefly shows "accepted"...
  • Page 38 Codes Code 1 (cont.) Overview Coding Coding in the delivered condition Possible change System design 00 :1 System version 1: 00 :2 System version 1: 1 heating circuit without 1 heating circuit without mixer A1, without DHW mixer A1, with DHW heat- heating 00 :3 System versions 2 and 3:...
  • Page 39 Codes Code 1 (cont.) Coding in the delivered condition Possible change User no. 77:1 LON user number 77:2 LON subscriber number, adjustable from 1 to 99: 77:99 1 - 4 = Boiler 5 = Cascade 10 - ... = Vitotronic 200-H 99 = Vitocom Note Allocate each number...

  • Page 40: Code 2

    Codes Code 2 Calling up code 2 Note 4. d to confirm; the value Codes that are irrelevant (due to the flashes heating system equipment level or the setting of other codes) will not be dis- 5. a/b for the selected value played.
  • Page 41 Codes Code 2 (cont.) Coding Coding in the delivered condition Possible change System design 00 :1 System version 1: 00 :2 System version 1: 1 heating circuit without 1 heating circuit without mixer A1, without DHW mixer A1, with DHW heat- heating 00 :3 System versions 2 and 3:...
  • Page 42 Codes Code 2 (cont.) Coding in the delivered condition Possible change 24:0 No "Service" display 24:1 "Service" display (the address is automatically set and must be manually reset after a service has been carried out) 26:0 Burner fuel consumption 26:1 Entry of 0.1 to 25.5;...
  • Page 43 Codes Code 2 (cont.) Coding in the delivered condition Possible change Boiler/burner 34:0 Influence of the signal 34:1 Influence of the signal "External demand" on the "External demand" on the circulation pumps: All 34:23 circulation pumps: See the pumps in control function following table Code Heating circuit...
  • Page 44 Codes Code 2 (cont.) Coding in the delivered condition Possible change 54:0 Without solar control unit 54:1 With a Vitosolic 100 54:2 With a Vitosolic 200 (auto- matic adjustment after rec- ognition) 56:0 DHW temperature adjust- 56:1 DHW temperature adjusta- able from 10 to 60 °C ble from 10 to above 60 °C (max.
  • Page 45 Codes Code 2 (cont.) Coding in the delivered condition Possible change 72:0 DHW circulation pump 72:1 "OFF" during DHW heating "ON" according to time to the second set value program 72:2 "ON" during DHW heating to the second set value 73:0 DHW circulation pump 73:1...
  • Page 46 97:2 The control unit sends the connected to the control outside temperature to the unit is utilised internally Vitotronic 200-H 98:1 Viessmann system num- 98:1 System number adjustable ber (in conjunction with from 1 to 5 monitoring several sys- 98:5...
  • Page 47 Codes Code 2 (cont.) Coding in the delivered condition Possible change 9C:20 Monitoring LON subscrib- 9C:0 No monitoring ers. 9C:5 The time is adjustable from If a subscriber fails to 5 to 60 min respond, the values 9C:60 specified inside the con- trol unit will be used after 20 min.
  • Page 48 Codes Code 2 (cont.) Coding in the delivered condition Possible change A2:2 With cylinder priority A2:0 Without cylinder priority applied to heating circuit applicable to heating circuit pump and mixer pump and mixer A2:1 Cylinder priority only appli- cable to mixer A2:3 Modulating priority applied to mixer;...
  • Page 49 Codes Code 2 (cont.) Parameter Heating circuit pump Address A3:... ON at OFF at 1 °C 3 °C 14 °C 16 °C Coding in the delivered condition Possible change Boiler circuit, mixer circuit A4:0 With frost protection A4:1 No frost protection, adjust- ment only possible if cod- ing address "A3: -9"...
  • Page 50 Codes Code 2 (cont.) Parameter address With heating circuit pump logic function: Heating cir- A5:... cuit pump OFF, if AT > RT - 1 K AT > RT - 9 K Coding in the delivered condition Possible change Boiler circuit, mixer circuit A6:36 Extended economy mode A6:5...
  • Page 51 Codes Code 2 (cont.) Coding in the delivered condition Possible change b0:0 With remote control: b0:1 Heating mode: Weather- Heating mode/reduced compensated mode: Weather-compen- Reduc. mode: With room temperature hook-up sated b0:2 Heating mode: With room temperature hook-up Reduc. mode: Weather- compensated b0:3 Heating mode/reduced...
  • Page 52 Codes Code 2 (cont.) Coding in the delivered condition Possible change Boiler circuit, mixer circuit C5:20 Electronic minimum flow C5:1 Minimum temperature limit temperature limit in adjustable from 1 to 127 °C standard mode 20 °C C5:127 (limited by boiler-specific parameters) C6:74 Electronic maximum flow...
  • Page 53 Codes Code 2 (cont.) Coding in the delivered condition Possible change E7:30 Minimum speed of the E7:0 Minimum speed adjustable variable speed pump from 0 to 100 % of max. 30 % of max. speed E7:100 speed E8:1 Minimum speed subject E8:0 Speed subject to the set- to the setting in coding...

  • Page 54: Resetting Codes To Their Delivered Condition

    Codes Code 2 (cont.) Coding in the delivered condition Possible change F9:-14 Below an outside temper- F9:+10 Limit for raising the set ature of -14 °C, the set room temperature to the room temperature will be F9:-60 value selected for standard raised to the value selec- mode adjustable from +10 ted as set room tempera-...

  • Page 55: Service Scans

    Service scans Service level overview Function Key combination Exit Page Temperatures, boiler cod- Press K and G simulta- Press d ing card and brief scans neously for approx. 2 s Press K and d simultane- Press d Relay test ously for approx. 2 s Adjusting the air volume Press K and F simulta- Press K and...
  • Page 56 Service scans Temperatures, boiler coding card and brief… (cont.) The following values can be scanned, subject to the system equipment level: Display Explanation ■ Slope A1 – level A1 ■ Slope M2 – level M2 ■ Adjusted outside temp The adjusted outside temperature can be reset to ■...

  • Page 57: Checking Outputs (Relay Test)

    Service scans Temperatures, boiler coding card and brief… (cont.) Brief scan Display 0: No 0: No External 0 to 10 V hook-up external external Display in °C demand blocking 0: No external hook-up 1: Exter- 1: Exter- nal block- demand Number of LON sub- Check Max.

  • Page 58: Scanning Operating Conditions And Sensors

    Service scans Checking outputs (relay test) (cont.) Subject to the actual equipment level, the following relay outputs can be con- trolled: Display Explanation Burner stage 1 On Burner stage 1 Burner stage 1+ 2 On Burner stage 2 Mix.valve closed Mixer extension Mix.valve open Mixer extension...
  • Page 59 Service scans Scanning operating conditions and sensors (cont.) Display Explanation DHW temp., ... °C DHW temperature - actual value Hours run Burner stage 1 ...h Hours run Burner stage 2 ...h Burner cycles, ... Actual value Consumption Solar energy Indication in kWh Time Date Burner stage 1 Off/On...

  • Page 60: Troubleshooting

    Troubleshooting Fault display Fault display layout Outside temperature sensor ­ A Fault display C Fault number B Fault symbol D Fault code The red fault indicator flashes for every Plain text fault displays: fault. ■ Combustion controller A fault in the burner control unit causes ■...

  • Page 61: Fault Codes

    Troubleshooting Fault display (cont.) Calling up acknowledged fault messages Press the following keys: 2. a/b for the acknowledged fault. 1. d for approx. 3 s Calling up fault codes from the fault memory (fault history) The 10 most recent faults are saved and 2.
  • Page 62 Troubleshooting Fault codes (cont.) Fault code System characteris- Cause Measures on the dis- tics play Control mode Flow temperature Set code "52:0". sensor heating cir- No connection to termi- cuit M2 was incor- nals "X3.4" and "X3.5 rectly connected " (see page 86). Burner blocked Short circuit, boiler Check the boiler water...
  • Page 63 Troubleshooting Fault codes (cont.) Fault code System characteris- Cause Measures on the dis- tics play Control mode Lead break, collec- Check the sensor at the tor temperature Vitosolic. sensor; connects to the Vitosolic at Control mode Lead break, cylin- Check the sensor at the der temperature Vitosolic.
  • Page 64 Troubleshooting Fault codes (cont.) Fault code System characteris- Cause Measures on the dis- tics play Mixer M2 regulates to Communication Check extension kit con- 20 °C flow tempera- fault, extension kit nections and code. Start ture for heating circuit the extension kit. with mixer M2 Control mode without Communication...
  • Page 65 Troubleshooting Fault codes (cont.) Fault code System characteris- Cause Measures on the dis- tics play Control mode Communication Replace the LON commu- fault, LON commu- nication module. nication module Control mode without Short circuit, room Check the room tempera- room influence temperature sen- ture sensor, heating cir- sor, heating circuit...
  • Page 66 Troubleshooting Fault codes (cont.) Fault code System characteris- Cause Measures on the dis- tics play Burner in a fault The temperature Check the heating system state limiter has respon- fill level. Check the circu- lation pump. Vent the sys- tem. Check the tempera- ture limiter and connect- ing cables.
  • Page 67 Troubleshooting Fault codes (cont.) Fault code System characteris- Cause Measures on the dis- tics play Burner in a fault Fan power supply Check fire safety switch or state is interrupted smoke thermostat, check ■ The fire safety jumper across terminals 1 switch or flue gas and 2 in junction box 201 thermostat is...

  • Page 68: Repairs

    Troubleshooting Repairs Checking the outside temperature sensor 1. Pull plug "X3" from the control unit. 2. Test the resistance of the outside temperature sensor across terminals "X3.1" and "X3.2" on the disconnec- ted plug and compare it with the curve. 3.

  • Page 69: Temperature Sensor

    Troubleshooting Repairs (cont.) Checking the boiler water temperature sensor or the cylinder temperature sensor 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.
  • Page 70 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 interlock after flue gas system has cooled down by pressing reset button "E". 1.
  • Page 71 Troubleshooting Repairs (cont.) 3. Replace the sensor in case of severe deviation. 10 30 50 70 90 110 Temperature in °C Checking the temperature limiter If the burner control unit cannot be reset after a fault shutdown, although the boiler water temperature is below approx.
  • Page 72 Troubleshooting Repairs (cont.) 1. Pull the leads from temperature lim- iter A. 2. Check the continuity of the tempera- ture limiter with a multimeter. 3. Remove the faulty temperature lim- iter. 4. Install a new temperature limiter. 5. After commissioning, press reset but- ton "E"...
  • Page 73 Troubleshooting Repairs (cont.) Checking the fuse 1. Switch OFF the power. 2. Remove top panel A. 3. Remove cover B. 4. Check fuse F1 and fuse F on the extension PCB (see connection and wiring diagram).
  • Page 74 Troubleshooting Repairs (cont.) Extension kit for heating circuit with mixer Checking the rotational direction of 2. Note the rotational direction of the the mixer motor mixer motor during its self-test. Then set the mixer manually to "Open" again. Note The flow temperature sensor must now capture a higher temperature.
  • Page 75 Troubleshooting Repairs (cont.) 2. Change over the rotational direc- tion switch: Switch position I for central heating return from the left (delivered condi- tion). A ON/OFF switch Switch position II for central heating B Rotational direction switch return from the right. 1.

  • Page 76: Function Description

    Function description Control unit Control and display elements Boiler water temperature °C ­ A Fault indicator (red) D User interface B ON indicator (green) E Reset button C Optolink interface F ON/OFF switch only in conjunction with the diagnos- G Rotary selector for standard room tic adaptor (accessory) and Vitosoft temperature (accessory)

  • Page 77: Control Functions

    Function description Control unit (cont.) Heating mode The set boiler water temperature is adjusted 20 K higher than the set DHW The control unit calculates a set boiler temperature (adjustable via coding water temperature depending on the out- address "60"). The burner will be side temperature and/or the room tem- switched OFF and the circulation pump perature (if a room temperature-control-...
  • Page 78 Function description Control functions (cont.) Heating program changeover Code Heating circuit with mixer M2 91:2 Heating circuit without mixer and heating circuit with mixer 91:3 You can select in which direction the heating program changes over in coding address "D5": Heating program changeover Code Changeover towards "Permanently reduced"...
  • Page 79 Function description Control functions (cont.) The minimum set boiler water tempera- ture in case of external demand is selec- ted in coding address "9b". Screed drying function The screed function enables screeds to ■ Heat-up data with respective flow tem- be dried.
  • Page 80 Function description Control functions (cont.) Temperature profile 3: Code "F1:3" Days Temperature profile 4: Code "F1:4" Days Temperature profile 5: Code "F1:5" Days...
  • Page 81 Function description Control functions (cont.) Temperature profile 6: Code "F1:6" Days Temperature profile 7: Code "F1:15" Days Raising the reduced room temperature During operation with reduced room The outside temperature limits for the temperature, the reduced set room tem- start and end of the temperature raising perature can be automatically raised can be adjusted via coding addresses subject to the outside temperature.
  • Page 82 Function description Control functions (cont.) Example using the settings in the delivered condition -5 -10 -15 Outside temperature in °C A Heating curve for operation with B Heating curve for operation with standard room temperature reduced room temperature Reducing the heat-up time During the transition from operation with The value and duration of the additional reduced room temperature to operation...

  • Page 83: Remote Control Dip Switches

    Function description Control functions (cont.) Example using the settings in the delivered condition Time in h A Start of operation with standard D Duration of operation with raised set room temperature boiler water or flow temperature in B Set boiler water or flow temperature accordance with coding address in accordance with the selected "Fb":...
  • Page 84 Function description Remote control DIP switches (cont.) Remote control DIP switch setting The remote control affects the heating cir- cuit without mixer A1 1 2 3 4 The remote control affects the heating cir- cuit with mixer M2 1 2 3 4 When connecting a separate room tem- perature sensor, set DIP switch "3"...

  • Page 85: Designs

    Designs Connection and wiring diagram – internal connections Internal connections and sensors X ... Electrical interfaces a-Ö § Boiler water temperature sensor a-ÖA Fan control Flue gas temperature sensor Flame monitor Temperature limiter Air pressure switch Ignition unit...
  • Page 86 Designs Connection and wiring diagram – internal… (cont.) Main PCB Programming unit Power supply unit Combustion controller...
  • Page 87 Designs Connection and wiring diagram – internal… (cont.) Coding card X ... Electrical interfaces Connection adaptor Outside temperature sensor LON communication module Cylinder temperature sensor Internal extension H3 fÖ Power supply [terminals] ON/OFF switch aXA Oil preheater Reset button aXF Flame monitor aVG KM BUS Oil pump aBH Power supply, internal extensions...
  • Page 88 Designs Connection and wiring diagram – internal… (cont.) Internal extensions H1 (PCB A5) and H3 (PCB A9)
  • Page 89 Designs Connection and wiring diagram – internal… (cont.) sÖ Heating circuit pump for the heat- ing circuit without mixer Circulation pump for cylinder heat- DHW circulation pump fÖ Power supply [terminals] gÖ Central fault message aXA Oil preheater aVD ■ External blocking (terminals 2 - 3) ■...

  • Page 90: Parts Lists

    Parts lists Parts lists Spare parts information 033 Siphon Quote the part and serial no. (see type 034 Condensate hose plate) and the item number of the 035 Boiler flue outlet grommets required part (as per this parts list). 037 Brush handle Obtain standard parts from your local 038 Thermal circuit breaker supplier.
  • Page 91 044 Special grease 213 EPP hood 047 Neutralisation maintenance set 214 Edge protector 048 Active charcoal filter maintenance 215 Vitoladens 300-C logo 216 Decorative cap 049 Oil filter changeover set 217 Set of sound deadening mats 050 Oil filter insert; Microtec...
  • Page 92 Parts lists Parts lists (cont.)
  • Page 93 Parts lists Parts lists (cont.)
  • Page 94 Parts lists Parts lists (cont.) 030t 004/021...
  • Page 95 Parts lists Parts lists (cont.) 306 307...
  • Page 96 Parts lists Parts lists (cont.)

  • Page 97: Commissioning/Service Reports

    Commissioning/service reports Commissioning/service reports Setting and test values Commission- Maintenance/ service Oil pressure Stage 1 actual adjusted Stage 2 actual adjusted Vacuum actual after mainte- nance Carbon dioxide content CO Stage 1 actual % by vol. adjusted % by vol. Stage 2 actual % by...

  • Page 98: Specification

    Specification Specification Rated breaking capacity of relay out- puts at 230 V~ for Permissible ambient temperature ■ Heating circuit 2 (1) A~ pump sÖ: ■ during operation: 0 to +40 °C ■ during storage and ■ Circulation pump 2 (1) A~ transport: -20 to +65 °C ■...

  • Page 99: Certificates

    Certificates Declaration of conformity We, Viessmann Werke GmbH & Co KG, D-35107 Allendorf, declare as sole respon- sible body, that the product Oil condensing boiler Vitoladens 300-C complies with the following standards: EN 267 EN 15 034 EN 297 EN 50 165...
  • Page 100 Certificates Manufacturer's certificate according to the 1st… (cont.) Allendorf, 5. May 2007 Viessmann Werke GmbH&Co KG pp. Manfred Sommer...

  • Page 101: Keyword Index

    Keyword index Keyword index Fault memory........61 Acknowledging a fault display....60 Faults..........60 Adjusting the air volume.....26 Filling the heating system....7 Adjusting the ignition electrodes..19 Filling the system.........7 Adjusting the oil pressure....25 Fill water..........7 Flue gas temperature sensor.....70 Flue gas test port.......24 Boiler water temperature sensor..69 Functions testing........57 Boosting DHW heating.......77...
  • Page 102 Keyword index Keyword index (cont.) Siphon Reduced room temperature....33 ■ cleaning..........23 Reduced room temperature raising. . .81 ■ filling..........9 Reducing the heat-up output....81 Small softening system......7 Reducing the heat-up time....82 Standard burner settings....23 Relay test...........57 Standard room temperature....32 Remote control........83 Static burner pressure......26 Removing the front panel....13 System designs......27, 38...
  • Page 104 16.1 to 23.5 kW from serial no. 7248 935 19.3 to 28.9 kW from serial no. 7248 934 Viessmann Werke GmbH&Co KG Viessmann Limited D-35107 Allendorf Hortonwood 30, Telford Telephone: +49 6452 70-0 Shropshire, TF1 7YP, GB Fax: +49 6452 70-2780 Telephone: +44 1952 675000 www.viessmann.com...

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