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

Oil condensing boiler with integral boiler control unit
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VIESMANN
Installation and service instructions
for contractors
Vitoladens 300-C
Type BC3, 12.9 to 28.9 kW
Oil condensing boiler
with integral boiler control unit
VITOLADENS 300-C
Please keep safe.
6136330 GB
7/2019

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  • Page 1 VIESMANN Installation and service instructions for contractors Vitoladens 300-C Type BC3, 12.9 to 28.9 kW Oil condensing boiler with integral boiler control unit VITOLADENS 300-C Please keep safe. 6136330 GB 7/2019...
  • Page 2 Safety instructions Safety instructions Please follow these safety instruc- tions closely to prevent accidents and material losses. Safety instructions explained Danger Note This symbol warns against the risk Details identified by the word "Note" of injury. contain additional information. Please note This symbol warns against the risk of material losses and environmen- tal pollution.
  • Page 3 For replacements, use only original Replace faulty components only spare parts supplied or approved by with genuine Viessmann spare Viessmann. parts. Safety instructions for operating the system If you smell flue gas...
  • Page 4 Safety instructions Safety instructions (cont.) Extractors Danger The simultaneous operation of the Operating appliances that extract air to boiler and appliances that extract the outside (extractor hoods, extractors, air to the outside can result in life air conditioning units, etc.) can create threatening poisoning due to a negative pressure.

  • Page 5: Table Of Contents

    Index Index 1. Information Disposal of packaging ................Symbols ....................Intended use ..................Installation, maintenance and cleaning ..........System examples .................. Spare parts lists ..................2. Preparing for installation ........................ 3. Installation sequence Siting the boiler ..................13 Positioning on an on-site plinth ............13 ■...
  • Page 6 Index Index (cont.) Deleting the fault history ..............80 ■ Fault codes .................... 80 Repairs ....................85 Checking the outside temperature sensor .......... 85 ■ Checking the boiler water temperature sensor or cylinder tempera- ■ ture sensor ..................85 Checking the flue gas temperature sensor ......... 86 ■...

  • Page 7: Information Disposal Of Packaging

    Information Disposal of packaging Please dispose of packaging waste in line with statu- tory regulations. Symbols The steps in connection with commissioning, inspec- Symbol Meaning tion and maintenance are found in the "Commission- Reference to other document containing ing, inspection and maintenance" section and identified further information as follows: Step in a diagram:...

  • Page 8: Installation, Maintenance And Cleaning

    Wear a dust mask to protect your respiratory tract. System examples Available system examples: See www.viessmann- schemes.com. Spare parts lists Information about spare parts can be found on the Viessmann spare parts app.

  • Page 9: Preparing For Installation

    Preparing for installation Preparing for installation Clearances Fig. 1 Combustion chamber Boiler DHW cylinder Overview of connections Fig. 2 Air vent valve Heating return Wiring area Flat gasket connection: G 1 ■ ½ Connection with the threaded inserts supplied: Wiring area ■...
  • Page 10 Preparing for installation Preparing for installation (cont.) Condensate drain Drain valve Trap (can be fitted on either the right or left) Neutralising system (accessories), only to the right Plinth (accessories) or left of the boiler, or behind the boiler below the Oil line connection heat exchanger Preparing for installation...
  • Page 11 Preparing for installation Preparing for installation (cont.) Removal under difficult handling conditions If required for easier handling, the casing panels, the burner and the combustion chamber can be removed. Fig. 4...
  • Page 12 Preparing for installation Preparing for installation (cont.) Before removing the burner, disconnect all cables from the burner. Fig. 5...

  • Page 13: Installation Sequence Siting The Boiler

    Installation sequence Siting the boiler Positioning on an on-site plinth > 2 Fig. 6 Align the boiler with a slight incline towards the back. Siting on a DHW cylinder System connection installation instructions Siting on a plinth Installation instructions on the plinth packaging...

  • Page 14: Mounting And Connecting The Safety Equipment Block

    Installation sequence Mounting and connecting the safety equipment block Note Counterhold the safety equipment block when tighten- ing the fittings. Fig. 7 Pressure gauge Safety valve Air vent valve Tee Rp (if the expansion vessel is to be fitted ½ Automatic shut-off valve here) Quick-action air vent valve...
  • Page 15 Installation sequence Mounting and connecting the safety equipment… (cont.) Fig. 8 Heating circuit connections with fittings or Divicon heating circuit distributor (accessories) Heating flow Heating return...

  • Page 16: Making The Safety Connections

    Installation sequence Mounting and connecting the safety equipment… (cont.) Fig. 9 Caps G 1 (if no DHW cylinder is to be connec- ½ ted) Expansion vessel connection Note Service instructions Fit front thermal insulation only after the system has been filled and tested for leaks. Making the safety connections Install the safety lines.

  • Page 17: Condensate Connection

    Installation sequence Condensate connection Connect the condensate pipe to the public sewage Please note system with a constant fall (without sagging) and a Flue gas may escape from the condensate drain pipe vent. Install a neutralising system if required. pipe if it is not equipped with a trap. Mount the condensate drain pipe with the trap Note supplied.

  • Page 18: Connecting The Neutralising System (Accessories)

    Installation sequence Condensate connection (cont.) Connecting the neutralising system (accessories) Note The neutralising system can be installed either to the right or left of the boiler, or behind it. Fig. 11 Condensate drain, boiler Neutralising system (accessories) Plinth (accessories) Condensate drain, neutralising system Condensate supply, neutralising system Flue gas connection Note...

  • Page 19: Open Flue Operation

    Installation sequence Flue gas connection (cont.) Open flue operation Fig. 12 Boiler flue connection Ventilation air aperture Flue gas connection Ventilation air connector Rodent guard Room sealed operation Separate flue gas/ventilation air routing Fig. 13 Boiler flue connection Ventilation air pipe...
  • Page 20 Installation sequence Flue gas connection (cont.) Coaxial flue gas/ventilation air routing 1. Attach ventilation air hose to ventilation air con- nector with spiral hose clamp Tighten the spiral hose clamp. Note The bridge of the spiral hose clamp must not be located where the ventilation air hose bends.

  • Page 21: Installing The Oil Supply As A Single Line System

    Installation sequence Installing the oil supply as a single line system Fig. 15 Fuel oil filter with automatic air vent valve Foot valve Important: Install a single line fuel oil filter R (filter Max. pipe length for suction line with 4 mm ⅜...

  • Page 22: Removing The Top Panel And Opening The Control Unit Enclosure

    Installation sequence Removing the top panel and opening the control unit enclosure Fig. 16 Note The outside temperature sensor, cylinder temperature sensor and plug for the control unit can be found in a pack behind the front panel (see page 10).

  • Page 23: Routing Connecting Cables/Leads

    Installation sequence Routing connecting cables/leads Please note If connecting cables/leads come into contact with hot components, they will be damaged. When routing and securing cables/leads on site, ensure that the maximum permissible tempera- ture for these is not exceeded. Fig. 17 Main PCB Connecting cables Strain relief fittings...

  • Page 24: Inserting Cables And Applying Strain Relief

    Installation sequence Routing connecting cables/leads (cont.) Inserting cables and applying strain relief On-site cables Fig. 18 Strip max. 100 mm of insulation from the cables. Cables with moulded strain relief Fig. 19 Electrical connections Information on connecting accessories Please note When connecting accessories observe the sep- Electronic assemblies can be damaged by elec- arate installation instructions provided with...
  • Page 25 Installation sequence Electrical connections (cont.) Fig. 20 Radio clock connection 230 V~ plugs Heating circuit pump A1 (heating circuit without sÖ Power supply mixer) fÖ ■ Plug (in a pack with other components Circulation pump for cylinder heating fÖ behind the front panel.) DHW circulation pump Danger KM-BUS subscriber (accessories)

  • Page 26: Connecting The Pumps

    Installation sequence Electrical connections (cont.) Connecting the pumps Available pump connections Rated relay out- put breaking ca- ∼ pacity at 230 V ∼ Heating circuit pump A1 2 (1) A sÖ (heating circuit without mix- ∼ Circulation pump for cylin- 2 (1) A der heating ∼...

  • Page 27: Connecting The Vitoconnect 100 Connecting Cable (Accessories)

    Installation sequence Electrical connections (cont.) Connecting the Vitoconnect 100 connecting cable (accessories) Fig. 22 Installing the Vitoconnect 100 Vitoconnect 100 installation and commissioning instructions...

  • Page 28: Connection Of Accessories

    Installation sequence Electrical connections (cont.) Connection of accessories Fig. 23 Boiler control unit EA1 extension and/or solar control module, type Extension kit, mixer M2 Extension kit, mixer M3 ON/OFF switch (on site) If the current flowing to the connected working parts Accessories Internal fuse (e.g.

  • Page 29: Connecting The Fire Safety Switch (For A Only)

    Installation sequence Connecting the fire safety switch (for only) Fig. 25 Note Route cable (on site) so that it cannot come into contact with hot components. Remove the existing jumper before making the con- nection.

  • Page 30: Fitting The Panels And Connecting The Programming Unit

    Installation sequence Fitting the panels and connecting the programming unit Fig. 26...

  • Page 31: Commissioning, Inspec-Steps - Commissioning, Inspection And Maintenance

    Commissioning, inspection, maintenance Steps - commissioning, inspection and maintenance Commissioning steps Inspection steps Maintenance steps Page • 1. Changing the language at the control unit..............32 • • 2. Setting the time and date (if required)................32 • 3. Filling the heating system....................32 •...

  • Page 32: Changing The Language At The Control Unit

    Commissioning, inspection, maintenance Changing the language at the control unit Note 4. Select the required language. At the commissioning stage, the display is in German (factory setting) Extended menu å 2. "Settings" 3. "Language" Sprache Deutsch ê ç Bulgarski ê Cesky ê...

  • Page 33: Checking All Connections On The Heating Water Side For Leaks

    Commissioning, inspection, maintenance Filling the heating system (cont.) Total permissible hardness of the fill and top-up water Total heating output Specific system volume < 20 l/kW 20 l/kW to < 50 l/kW 50 l/kW ≥ ≥ ≤ 3.0 mol/m (16.8 °dH) 2.0 mol/m (11.2 °dH) <...

  • Page 34: Venting The Boiler

    Commissioning, inspection, maintenance Venting the boiler Fig. 29 1. Close the shut-off valves on the heating water side. 4. Open valves and vent at mains pres- sure until the sound of escaping air can no longer 2. Remove front insulation shell (if already fitted).

  • Page 35: Draining The Heating System (If Required)

    Commissioning, inspection, maintenance Draining the heating system (if required) Note To drain the heating system, remove the front panel of the boiler (see page 38). Fig. 30 Drain valve...

  • Page 36: Filling The Trap And Neutralising System (Accessories) With Water

    Commissioning, inspection, maintenance Filling the trap and neutralising system (accessories) with water Fill the trap and neutralising system with water at low water pressure via inspection port in the flue pipe. Fig. 31 Venting the fuel oil filter and suction line Prevent dry-running damage to the fuel oil pump.

  • Page 37: Function Sequence And Possible Faults

    Commissioning, inspection, maintenance Function sequence and possible faults Display Measure Control unit issues a heat Increase set value and en- demand sure heat is drawn off Oil preheating starts After approx. 10 min Check the oil preheater, cables and plug-in con- Fault nections (oil preheater has not switched through;...

  • Page 38: Removing The Front Panel

    Commissioning, inspection, maintenance Removing the front panel Fig. 32 Opening the boiler door Fig. 33 1. Remove cables running to fan from their retain- 2. Undo the screws. ers. 3. Open the boiler door.

  • Page 39: Cleaning The Heating Surfaces

    Commissioning, inspection, maintenance Cleaning the heating surfaces Please note Note Do not scratch or otherwise damage the surfa- Discolouration on the surface of the stainless steel ces of the stainless steel heat exchanger that heat exchanger is a normal sign of use. It has no bear- come into contact with hot gas.
  • Page 40 Commissioning, inspection, maintenance Cleaning the heating surfaces (cont.) Biferral heating surface and stainless steel heat exchanger Fig. 35 1. Use a vacuum cleaner to remove deposits from the heating surfaces (angled nozzle available as accessory). 2. Pull the condensate hose from the neutralising sys- tem.
  • Page 41 Commissioning, inspection, maintenance Cleaning the heating surfaces (cont.) 4. Flush the flue gas silencer and stainless steel heat exchanger with water at low pressure through the inspection port in the flue pipe Note Ensure that no water penetrates the ventilation air gap of the balanced flue system.
  • Page 42 Commissioning, inspection, maintenance Cleaning the heating surfaces (cont.) 3. Clean the trap. 4. Refit the trap, condensate hose and neutralising system. Fill the trap with water. Danger If the trap is not full, flue gas can escape. Escaping flue gas can cause life threatening carbon monoxide poisoning.
  • Page 43 Commissioning, inspection, maintenance Cleaning the heating surfaces (cont.) Stainless steel heat exchanger and neutralising system 1. Finally, flush the stainless steel heat exchanger and neutralising system again with water. Note ■ Minimum slope of the entire condensate pipe 3°. Hoses must not sag or form a U-bend. ≥...

  • Page 44: Closing The Boiler Door

    Commissioning, inspection, maintenance Closing the boiler door Fig. 41...

  • Page 45: Cleaning The Burner

    Commissioning, inspection, maintenance Cleaning the burner Fig. 42 1. Undo the screws, remove the cover with mixer 2. Pull the cables from oil preheater and ignition assembly and secure in the maintenance posi- electrodes tion. 3. Undo Allen screw and remove spinning facility Note If mixer assembly cannot be pulled out, open...

  • Page 46: Replacing The Nozzle And Checking Or Adjusting The Ignition Electrodes

    Commissioning, inspection, maintenance Replacing the nozzle and checking or adjusting the ignition electrodes 2.5 mm Fig. 43 1. Undo nozzle whilst counterholding the oil pre- 5. Position oil burner nozzle centrally in the heater. Prevent the formation of bubbles. restrictor. 2.

  • Page 47: Cleaning And Replacing The Oil Pump Filter (If Required)

    Commissioning, inspection, maintenance Cleaning and replacing the oil pump filter (if required) Suntec oil pump, type ATE2V Fig. 44 Filter (clean or replace) O-rings (replace) Flat gasket (replace) Cover Venting the fuel oil filter and suction line If required due to maintenance work. See page 36. Checking the gaskets and thermal insulation sections 1.

  • Page 48: Checking The Electrical Connections For Firm Seating

    Commissioning, inspection, maintenance Checking the gaskets and thermal insulation… (cont.) Removing the side panels (only if required for maintenance work) Fig. 45 Note Refit in reverse order. Checking the electrical connections for firm seating Checking the neutralising system (accessories) Note Note When installing the neutralising system, ensure that Part no.

  • Page 49: Checking The Activated Carbon Filter (Accessories)

    Commissioning, inspection, maintenance Checking the activated carbon filter (accessories) Note Observe the manufacturer's documentation included for the activated carbon filter. Checking the expansion vessel and system pressure Adjusting the standard burner settings Note To be able to adjust the burner, there must be a heat demand and heat transfer must also be assured.

  • Page 50: Adjusting The Oil Pressure And Checking The Vacuum

    Commissioning, inspection, maintenance Adjusting the standard burner settings (cont.) Rated heating output at T 50/30 °C 12.9/19.3 16.1/23.6 19.3/28.9 at T 80/60 °C 12/18 15/22 18/27 Static burner pressure ap- prox. Min. mbar 17.5 20.5 ■ 0.75 1.75 2.05 Max. mbar 10.5 12.5...

  • Page 51: Adjusting The Air Volume (Static Burner Pressure)

    Commissioning, inspection, maintenance Adjusting the oil pressure and checking the… (cont.) 3. Set the lower heating output: 4. Set the upper heating output: Select "Burner stage 1 ON" and confirm with OK. Select "Burner stage 1 + 2 ON" and confirm with Adjusting the air volume (static burner pressure) 04.

  • Page 52: Fitting The Front Panel

    Commissioning, inspection, maintenance Fitting the front panel Fig. 49 Checking the safety valve function Matching the control unit to the heating system Note The control unit must be matched to the equipment level of the system. Various system components are recognised automatically by the control unit and the codes are set automatically.
  • Page 53 Commissioning, inspection, maintenance Adjusting the heating curves (cont.) Note Factory settings: If the heating system includes heating circuits with ■ Slope = 1.4 mixer, then the flow temperature of the heating circuit ■ Level = 0 without mixer is higher by a selected differential (8 K in the delivered condition) than the flow temperature of the heating circuits with mixer.

  • Page 54: Connecting The Control Unit To Wifi

    Commissioning, inspection, maintenance Adjusting the heating curves (cont.) Adjusting the set room temperature Reduced room temperature Standard room temperature Fig. 53 Example 2: Adjusting the reduced room tem- perature from 5 °C to 14 °C Fig. 52 Example 1: Adjusting the standard room tem- perature from 20 to 26 °C Boiler water temperature or flow temperature in °C Outside temperature in °C...
  • Page 55 Control unit receives outside — temperature. temperature. temperature. Set code "97:2". Set code "97:1". Set code "97:1". Viessmann system number. Viessmann system number. Viessmann system number. — Code "98:1" Code "98:1" Code "98:1" LON subscriber fault monitor- LON subscriber fault moni- LON subscriber fault moni- —...

  • Page 56: Instructing The System User

    Commissioning, inspection, maintenance Instructing the system user The system installer should hand the operating instruc- tions to the system user and instruct the user in oper- ating the system. Calling up and resetting the "Service" display After the limits specified in coding addresses "21" and After a service has been carried out (resetting "23"...

  • Page 57: Codes Code 1

    Codes Code 1 On weather-compensated control units, codes are Calling up code 1 ■ displayed as plain text. ■ Codes that are not assigned, due to the heating sys- Service menu: tem equipment level or the setting of other codes, are not displayed.

  • Page 58: Boiler

    Codes Code 1 (cont.) Value, ad- System ver- Description dress 00: ... sion One heating circuit without mixer A1 (heating circuit 1), one heating circuit with mixer M2 (heating circuit 2) and one heating circuit with mixer M3 (heating circuit 3), without DHW heating (code is set automatically) One heating circuit without mixer A1 (heating circuit 1), one heating circuit with mixer M2 (heating circuit 2) and one heating circuit with mixer M3 (heating circuit...

  • Page 59: Dhw

    Codes Code 1 (cont.) Coding in the delivered condition Possible change Service interval in months 23:0 No time set for burner service in- 23:1 Time interval adjustable from 1 to terval 24 months 23:24 Service status 24:0 "Service" not shown on the dis- 24:1 "Service"...

  • Page 60: Heating Circuit

    Codes Code 1 (cont.) Coding in the delivered condition Possible change Stagnation time reduction 0A:5 Temperature differential for stagna- 0A:0 Stagnation time reduction not active. tion time reduction (reduction in 0A:1 Temperature differential adjustable the speed of the solar circuit pump from 1 to 40 K.
  • Page 61 Codes Code 1 (cont.) Parameter address A5:... With heating circuit pump logic function: Heating circuit pump "OFF" OT > RT + 5 K OT > RT + 4 K OT > RT + 3 K OT > RT + 2 K OT >...
  • Page 62 Codes Code 1 (cont.) Coding in the delivered condition Possible change Economy function room temperature b5:0 With remote control: No room tem- b5:1 For heating circuit pump logic func- perature-dependent heating circuit tion, see the following table: pump logic function (change code b5:8 only for heating circuit with mixer) Parameter address...
  • Page 63 Codes Code 1 (cont.) Coding in the delivered condition Possible change Party mode time limit F2:8 Time limit for party mode or exter- F2:0 No time limit for party mode nal operating program changeover F2:1 Time limit adjustable from 1 to 12 h via pushbutton: 8 h F2:12 Start temperature raising...

  • Page 64: Code 2

    Codes Code 2 (cont.) 6. Set the value according to the following tables and Note confirm with OK. This also resets the codes at coding level 1. Resetting all codes to the factory setting Select "Standard setting". "General" Select "General". Coding Coding in the delivered condition Possible change...
  • Page 65 Codes Code 2 (cont.) Coding in the delivered condition Possible change 3A:2 Function of input DE1: External de- mand with set flow temperature. Setting of set flow temperature for external demand: Coding address "9b". 3A:3 Function of input DE1: External blocking.
  • Page 66 Codes Code 2 (cont.) Coding in the delivered condition Possible change 3d:5 DHW circulation pump runtime for 3d:1 DHW circulation pump runtime ad- brief operation: 5 min justable from 1 to 60 min 3d:60 51:0 Only if low loss header sensor is 51:1 Do not adjust.

  • Page 67: Boiler

    97:2 Control unit transmits outside tem- unit is used internally. perature to Vitotronic 200-H 98:1 Viessmann system number (in 98:1 System no. adjustable from 1 to 5 conjunction with monitoring of sev- eral systems via Vitocom 300) 98:5...

  • Page 68: Dhw

    Codes Code 2 (cont.) Coding Coding in the delivered condition Possible change 04:1 Minimum burner pause time sub- 04:0 Minimum burner pause time set per- ject to boiler load (specified by manently (specified by boiler coding boiler coding card) card) 06:...

  • Page 69: Solar

    Codes Code 2 (cont.) Coding in the delivered condition Possible change 59:0 Cylinder heating: 59:1 Start point adjustable from 1 to 10 K Start point -2.5 K below set value Stop point +2.5 K 59:10 5E:0 Circulation pump for cylinder heat- 5E:1 Circulation pump for cylinder heating ing stays in control mode at "Exter-...
  • Page 70 Frost protection function for solar 0b:1 Frost protection function for solar cir- circuit switched off. cuit switched on (not required with Viessmann heat transfer medium). 0C:1 Delta T monitoring switched on. 0C:0 Delta T monitoring switched off. No flow rate detected in the solar circuit, or flow rate too low.
  • Page 71 Codes Code 2 (cont.) Coding in the delivered condition Possible change 0F:70 Solar circuit flow rate at max. 0F:1 Flow rate adjustable from 0.1 to pump speed 7 l/min. 25.5 l/min. ≙ 0F:255 1 step 0.1 l/min 10:0 Target temperature control switch- 10:1 Target temperature control switched ed off (see coding address "11").

  • Page 72: Heating Circuit

    Codes Code 2 (cont.) Coding in the delivered condition Possible change 26:3 Priority for DHW cylinder 2 with cy- clical heating. 26:4 Cyclical heating without priority for either DHW cylinder. 27:15 Cyclical heating time 15 min. 27:5 The cyclical heating time is adjusta- Once the DHW cylinder with priori- ble from 5 to 60 min.
  • Page 73 Codes Code 2 (cont.) Parameter Heating circuit pump address A3:... "ON" "OFF" -8 °C -6 °C -7 °C -5 °C -6 °C -4 °C -5 °C -3 °C -4 °C -2 °C -3 °C -1 °C -2 °C 0 °C -1 °C 1 °C 0 °C...
  • Page 74 Codes Code 2 (cont.) Coding in the delivered condition Possible change A6:36 Extended economy mode not ac- A6:5 Extended economy mode active: tive The burner and heating circuit pump A6:35 are switched off at a variable value, adjustable from 5 to 35 °C plus 1 °C. Mixer is being closed.
  • Page 75 Codes Code 2 (cont.) Parameter address With heating circuit pump logic function: b5:... Heating circuit pump "OFF" Heating circuit pump "ON" > RT < RT – – actual actual > RT < RT – – actual actual Coding in the delivered condition Possible change C5:20 Electronic minimum flow tempera-...
  • Page 76 Codes Code 2 (cont.) Coding in the delivered condition Possible change F1:0 Screed drying not active F1:1 Screed drying can be set with 6 ad- justable temperature/time profiles F1:6 (see page 94) F1:15 Constant flow temperature 20 °C F2:8 Time limit for party mode or exter- F2:0 No time limit for party mode nal operating program changeover...

  • Page 77: Diagnosis And Service Calling Up The Service Level

    Diagnosis and service checks Calling up the service level Press OK and simultaneously for approx. 4 s. å "Service" "Diagnosis" "General" "Heating circuit 1" "HC1" "Heating circuit 2" "HC2" "Heating circuit 3" "HC3" "DHW" "Solar" "Brief scan" "Reset data" "Actuator test" "Coding level 1"...

  • Page 78: Brief Scan

    Diagnosis and service checks Diagnosis (cont.) 3. Select the required group, e.g. "General". 1. Press OK and simultaneously for approx. 4 s. å Resetting operating data 2. "Diagnosis" Saved operating data (for example, hours run) can be 3. "Reset data" reset to 0.

  • Page 79: Testing Outputs (Relay Test)

    Diagnosis and service checks Diagnosis (cont.) Row (brief Field scan) Heating circuit A1 (without Heating circuit M2 (with Heating circuit M3 (with mix- mixer) mixer) Remote con- Software ver- Remote con- Software ver- Remote con- Software version trol sion trol sion trol Remote control...

  • Page 80: Troubleshooting Fault Display

    Troubleshooting Fault display For some faults, the type of fault is also displayed in In the event of a fault, red fault indicator flashes. " " flashes on the display and "Fault" is shown. plain text. Acknowledging a fault Follow the instructions on the display. Note The fault message is shown on the standard display of the short menu.
  • Page 81 Troubleshooting Fault codes (cont.) Displayed fault System characteristics Cause Measures code Burner locked out Lead break, boiler water Check boiler water temperature temperature sensor sensor (see page 85) Mixer is being closed. Short circuit, flow temper- Check flow temperature sensor ature sensor for heating (see page 89) circuit 2 (with mixer)
  • Page 82 Troubleshooting Fault codes (cont.) Displayed fault System characteristics Cause Measures code Burner locked out Short circuit, flue gas tem- Check flue gas temperature sen- perature sensor sor. Control mode as per deliv- Communication error, pro- Check connections and replace ered condition gramming unit programming unit if necessary.
  • Page 83 Troubleshooting Fault codes (cont.) Displayed fault System characteristics Cause Measures code Control mode Input DE3 at Remedy fault at affected appliance. EA1 extension reports a fault. Control mode without room Short circuit, room tem- Check room temperature sensor, influence perature sensor, heating heating circuit 1.
  • Page 84 Troubleshooting Fault codes (cont.) Displayed fault System characteristics Cause Measures code Burner in a fault state The air pressure switch Check air pressure switch and re- does not respond. place if necessary. Press reset button R. Burner in a fault state Fuel valves are not actu- Check connecting cables and plug- ated or no feedback from...

  • Page 85: Repairs

    Troubleshooting Repairs Checking the outside temperature sensor 2. Test the resistance of the outside temperature sen- sor across terminals "X3.1" and "X3.2" on the dis- connected plug and compare it with the curve. -20 -10 0 10 20 Temperature in °C Fig.

  • Page 86: Checking The Flue Gas Temperature Sensor

    Troubleshooting Repairs (cont.) 3. In the event of severe deviation replace the sensor. Danger The boiler water temperature sensor is directly immersed in the heating water (risk of scalding). Drain the boiler before replacing the sensor. Checking the flue gas temperature sensor The flue gas temperature sensor locks out the boiler if the permissible flue gas temperature is exceeded.
  • Page 87 Troubleshooting Repairs (cont.) 1. Disconnect the leads from temperature limiter 2. Check the continuity of the temperature limiter with a multimeter. 3. Remove faulty temperature limiter. 4. Install a new temperature limiter. 5. After commissioning, press reset button R on the control unit.

  • Page 88: Checking The Fuse

    Troubleshooting Repairs (cont.) Checking the fuse 1. Switch off the power supply. 2. Remove top panel 3. Remove cover 4. Check fuse F1 (see connection and wiring dia- gram). Fig. 63 Mixer extension kit Checking the setting of rotary selector S1 Note The mixer motor can also be started via the actuator The rotary selector on the PCB of the extension kit...

  • Page 89: Checking The Vitotronic 200-H (Accessories)

    Troubleshooting Repairs (cont.) Changing the rotational direction of the mixer motor (if required) 1. Remove the upper casing cover of the extension kit. Danger An electric shock can be life-threatening. Before opening the boiler, disconnect it from the mains voltage, e.g. at the fuse or mains isolator.

  • Page 90: Function Description Control Unit

    Function description Control unit 21°C 14°C Boiler temperature 48 °C Fig. 66 Heating mode The control unit determines a set boiler water tempera- The burner control unit calculates the current heat ture subject to outside temperature or room tempera- demand and actuates the 2-stage burner accordingly. ture (if a room temperature-dependent remote control The burner is started up in burner stage 1.

  • Page 91: External Extension

    Function description External extension EA1 extension Fig. 67 Fuse Power supply for additional accessories fÖ Digital input 1 Central fault message/feed pump/DHW circu- Digital input 2 lation pump (potential-free) Digital input 3 Connect DHW circulation pumps with stand- ∼ 10 V 0 10 V input alone functions directly to the 230 V supply.

  • Page 92: Control Functions

    Function description External extension (cont.) The effect of the operating program changeover is Analogue input 0 10 V – selected via parameter/coding address d5 in the "Heating circuit" group. The 0 10 V hook-up provides an additional set boiler – The duration of the changeover is set via parameter/ water temperature: coding address F2 in the "Heating circuit"...

  • Page 93: External Blocking

    Function description Control functions (cont.) Operating program changeover Code Changeover via input DE1 d8:1 Changeover via input DE2 d8:2 Changeover via input DE3 d8:3 You can select which direction the operating program changeover takes in coding address "d5": Operating program changeover Code Changeover towards "Continually reduced"...

  • Page 94: Screed Drying

    Function description Control functions (cont.) External demand Code Input DE1 3A:2 Input DE2 3b:2 Input DE3 3C:2 The effect on the relevant heating circuit pump is The set minimum boiler water temperature for ext. selected with coding address "d7". demand is selected in coding address "9b". Screed drying The screed drying function enables screeds to be Heat-up data with the relevant flow temperatures...

  • Page 95: Raising The Reduced Room Temperature

    Function description Control functions (cont.) Temperature profile 4: Code "F1:4" Days Fig. 71 Temperature profile 5: Code "F1:5" Days Fig. 72 Temperature profile 6: Code "F1:6" Days Fig. 73 Temperature profile 7: Code "F1:15" Days Fig. 74 Raising the reduced room temperature During operation at reduced room temperature, the The outside temperature limits for the start and end of reduced set room temperature can be automatically...

  • Page 96: Reducing The Heat-Up Time

    Function description Control functions (cont.) Example using the settings in the delivered condition -5 -10 -15 Outside temp. in °C Fig. 75 Heating curve for operation at standard room tem- perature Heating curve for operation at reduced room tem- perature Reducing the heat-up time When changing from operation with reduced room The value and duration of the additional increase of...

  • Page 97: Assigning Heating Circuits To The Remote Control

    Function description Control functions (cont.) Example using the settings in the delivered condition Time in h Fig. 76 Start of operation at standard room temperature Set boiler water or flow temperature in accordance Set boiler water or flow temperature in accordance with coding address "FA": with the selected heating curve 50 °C + 20 % = 60 °C...

  • Page 98: Connection And Wiring Dia

    Connection and wiring diagram Connection and wiring diagram PCB overview Fig. 77 A1 Main PCB A9 Internal H3 extension A3 Programming unit fÖ Power supply 230 V/50 Hz A5 Connection extension Power supply, internal extensions...
  • Page 99 Connection and wiring diagram Connection and wiring diagram (cont.) Internal connection diagram Fig. 78 Boiler water temperature sensor § a-Ö Flue gas temperature sensor A Fan control a-Ö Temperature limiter Flame monitor Ignition unit Air pressure switch...
  • Page 100 Connection and wiring diagram Connection and wiring diagram (cont.) External connection diagram Fig. 79 Main PCB Fuel valve stage 1 Switching mode power supply Fuel valve stage 2 Programming unit X ... Electrical interfaces Burner control unit Outside temperature sensor Coding card Cylinder temperature sensor Connection adaptor...
  • Page 101 Connection and wiring diagram Connection and wiring diagram (cont.) Plug 201 connection diagram Fig. 80 Jumper or fire safety switch Oil pump Fan motor Fuel valve 1 a-Ö Internal connecting cable (on main PCB) Fuel valve 2...
  • Page 102 Connection and wiring diagram Connection and wiring diagram (cont.) Connection diagram, extensions Fig. 81 A5 Connection extension DHW circulation pump A9 Internal H3 extension Power supply 230 V/50 Hz fÖ Heating circuit pump for heating circuit without sÖ Oil preheater mixer Power supply, internal extensions Circulation pump for cylinder heating...

  • Page 103: Commissioning/Service

    Commissioning/service reports Commissioning/service reports Settings and test values Commissioning Maintenance/service Oil pressure Stage 1 actual Stage 2 actual Vacuum actual after maintenance Carbon dioxide content CO Stage 1 actual % by vol. % by vol. Stage 2 actual % by vol. % by vol.

  • Page 104: Specification

    Specification Specification Oil condensing boiler, type B Rated heating output at T 50/30 °C 12.9/19.3 16.1/23.6 19.3/28.9 at T 80/60 °C 12/18 15/22 18/27 Burner stage Rated heat input 12.5 18.7 15.6 22.9 18.7 28.1 Power consumption Rated voltage Rated frequency Rated current Backup fuse (max.) IP rating...

  • Page 105: Disposal Final Decommissioning And Disposal

    Disposal Final decommissioning and disposal Viessmann products can be recycled. Components For decommissioning the system, isolate the system and substances from the system are not part of ordi- from the power supply and allow components to cool nary household waste.

  • Page 106: Certificates Declaration Of Conformity

    This product meets the requirements of the Efficiency Directive (92/42/EEC) for condensing boilers. The product characteristics determined as system values for the product Vitoladens 300-C as part of EC type testing according to the Efficiency Directive (see specification table) can be utilised to assess the energy effi- ciency of heating and ventilation systems in buildings to DIN V 4701-10, as specified by the EnEV [Germany].

  • Page 107: Keyword Index

    Keyword index Keyword index Heating surfaces Accessories, connecting..........28 – Cleaning..............39 Acknowledging a fault display........80 Heating system filling..........32 Activated carbon filter..........49 Heat-up time...............96 Air volume adjustment..........51 Ignition electrodes Boiler door – Adjusting..............46 – Closing..............44 Boiler water temperature sensor........ 85 Boosting DHW heating..........90 Language selection............
  • Page 108 Suction line, venting........... 36 System filling.............. 33 System pressure............33 WiFi connection............54 System schemes............52 Wiring diagram............98 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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