Viessmann Vitovalor PT2 Installation And Service Instructions For Contractors
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Viessmann Vitovalor PT2 Installation And Service Instructions For Contractors

Fuel cell based micro chp unit with integral gas condensing boiler and adjacent cylinder module natural gas version
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VIESMANN
Installation and service instructions
for contractors
Vitovalor PT2
Type F11T, F19T, F25T, F32T, 0.9 to 30.8 kW
Fuel cell based micro CHP unit with integral gas condensing boiler and adjacent
cylinder module
Natural gas version
VITOVALOR PT2
Please keep safe.
5853335 GB
10/2019

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  • Page 1 VIESMANN Installation and service instructions for contractors Vitovalor PT2 Type F11T, F19T, F25T, F32T, 0.9 to 30.8 kW Fuel cell based micro CHP unit with integral gas condensing boiler and adjacent cylinder module Natural gas version VITOVALOR PT2 Please keep safe.
  • 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 Viessmann. water pipes to discharge static loads. Repair work Please note Repairing components that fulfil a safety function can compromise the safe operation of the system. Replace faulty components only with genuine Viessmann spare parts.
  • Page 4 Safety instructions Safety instructions (cont.) Safety instructions for operating the system If you smell gas Condensate Danger Danger Escaping gas can lead to explo- Contact with condensate can be sions which may result in serious harmful to health. injury. Never let condensate touch your Do not smoke.
  • Page 5 Safety instructions Safety instructions (cont.) Danger The simultaneous operation of the boiler and appliances that exhausts air to the outside can result in life threatening poisoning due to a reverse flow of flue gas. Fit an interlock circuit or take suita- ble steps to ensure an adequate supply of combustion air.

  • Page 6: Table Of Contents

    Dimensions of siting options ............... 11 ■ Preparing for installation ................ 14 Notes on connecting to the mains supply ..........17 Vitovalor PT2 in mains parallel mode ..........17 ■ Metering generated power ..............17 ■ Property boundaries and transfer point without power storage sys- ■...
  • Page 7 Index Index Fitting the front panels of the gas condensing and fuel cell module ..50 Fitting the programming unit ............... 50 ■ Fitting the cylinder module front panel ........... 51 Splitting the gas condensing and fuel cell modules ....... 52 Reassemble the gas condensing and fuel cell module in reverse ■...

  • Page 8: Index Index

    Index Index (cont.) Filling program ..................149 ■ Heating curve ..................149 ■ Screed drying ..................151 ■ Raising the reduced room temperature ..........152 ■ Electronic combustion controller of gas condensing module ....154 Electrical output of the fuel cell .............. 154 9.

  • Page 9: 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 10: Product Information

    Note on positioning If the Vitovalor PT2 is installed in close proximity to the If combining with a photovoltaic system, ensure that coast, the appliance should be positioned so that the the electricity meter is arranged correctly.

  • Page 11: Preparing For Installation Handling

    Preparing for installation Handling Gas condensing and fuel cell module: Please note ■ If possible, leave the modules in their packaging dur- Prevent damage to the appliance during han- ing handling. dling. ■ When transporting, keep upright at all times on the Never set the appliance down on its front or pallet or its base.
  • Page 12 Preparing for installation Siting (cont.) Siting options for room heights > 2030 mm Cylinder module to the left of the gas condensing and fuel cell module 1205 Fig. 2 Wiring area Note Height of balanced flue terminal including balanced flue pipe 1000 mm in length...
  • Page 13 Preparing for installation Siting (cont.) Cylinder module to the right of the gas condensing and fuel cell module 1205 Fig. 3 Wiring area Note Height of balanced flue terminal including balanced flue pipe 1000 mm in length...

  • Page 14: Preparing For Installation

    Preparing for installation Siting (cont.) Siting option for room heights 2000 mm 2030 mm ≥ ≤ A special inspection tee (part no. ZK04464) is required for this siting option. The cylinder module can only be installed to the right of the gas condensing and fuel cell module.
  • Page 15 Preparing for installation Preparing for installation (cont.) 1205 Fig. 5 Condensate drain Observe the necessary fall. Clearance for connections on the water side Clearance for condensate drain pipe connection Note All height dimensions have a tolerance of +15 mm on account of the adjustable feet.
  • Page 16 Preparing for installation Preparing for installation (cont.) Connections on the water side with connection set (standard delivery) Fig. 6 Heating return R Heating flow R ¾ ¾ Cold water R Manometer and drain valve ½ DHW circulation R (accessory) Gas shut-off valve ½...

  • Page 17: Notes On Connecting To The Mains Supply

    This operating mode is described ■ LV connection ordinances as well as supplementary as mains parallel mode. For this, the Vitovalor PT2 is conditions of the relevant grid operator mechanically coupled to the grid. Any applicable statutory or local regulations ■...
  • Page 18 S1 Bidirectional energy management meter (not rele- vant for billing by the grid operator) vant for billing by the grid operator) Z1 Balancing bidirectional meter Z1 Balancing bidirectional meter Z2 Export meter (standard delivery on Vitovalor PT2) Z2 Export meter (standard delivery on Vitovalor PT2)

  • Page 19: Property Boundaries And Transfer Point Without Power Storage System

    S1 Bidirectional energy management meter (not rele- vant for billing by the grid operator) Z1 Balancing bidirectional meter (observe meter cir- cuit) Z2 Export meter (standard delivery on Vitovalor PT2) 1~/N/PE Fig. 9 Source: VDE AR-N 4105 Low voltage grid...

  • Page 20: Property Boundaries And Transfer Point With Power Storage System

    S2 Bidirectional energy management meter (not rele- vant for billing by the grid operator) Z1 Balancing bidirectional meter (observe meter cir- cuit) Z2 Export meter (standard delivery on Vitovalor PT2) 1~/N/PE Fig. 10 Source: VDE AR-N 4105 Low voltage grid...

  • Page 21: Connection For Excess Export Without Power Storage System

    Power distribution S1 Bidirectional energy management meter (optional, On-site consumers not relevant to billing by the grid operator) Short circuit protection Z1 Balancing bidirectional meter (observe meter cir- Overload protection, RCD cuit) Vitovalor PT2 Electricity meter for power export and drawing...
  • Page 22 Preparing for installation Notes on connecting to the mains supply (cont.) Z2 Export meter for PV system power generation Z3 Export meter for power generation by Vitovalor PT2 (standard delivery with Vitovalor PT2) Z4 Export meter for Vitovalor PT2 alone...

  • Page 23: Connection For Excess Export With Power Storage System

    Fig. 12 Low voltage grid On-site consumers Main power supply Short circuit protection Domestic distribution box Overload protection, RCD Property boundary Vitovalor PT2 Grid operator GS protection Customer Inverter (DC/AC converter) S = 0.75 kVA EMAX Power distribution Fuel cell...

  • Page 24: Fuse Protection

    Fuse protection The Vitovalor PT2 has been factory-tested as a unit The Vitovalor PT2 must not be installed in the same that is ready for connection. Only an adequately sized final consumer circuit as other consumers.
  • Page 25 RCD . Both conditions ensure RCD for the Vitovalor PT2 responds earlier than upstream RCD l in A Fig. 14 Response characteristics of the residual cur- rent devices...

  • Page 26: Installation Sequence Installing And Aligning The Vitovalor Pt2

    Installation sequence Installing and aligning the Vitovalor PT2 Fitting the connection lines on the gas condensing and fuel cell module The connecting cables are supplied packed separately in the "Tower cylinder connection set" box. Ø 22 Ø 18 Fig. 15 1.

  • Page 27: Routing Drain Lines

    Installation sequence Installing and aligning the Vitovalor PT2 (cont.) Routing drain lines Note Condensate hoses are fastened on the back of the gas condensing and fuel cell module. Fig. 16 180° Fig. 17 Note Pull the hoses out of the appliance far enough to pre- vent unnecessary bends inside the appliance.

  • Page 28: Aligning The Gas Condensing And Fuel Cell Module At The Installation Site

    Installation sequence Installing and aligning the Vitovalor PT2 (cont.) Aligning the gas condensing and fuel cell module at the installation site Fig. 18...

  • Page 29: Fitting The Surface Mounting Connection Set (Accessories) On Left/Right Of The Cylinder Module

    Installation sequence Installing and aligning the Vitovalor PT2 (cont.) Fitting the surface mounting connection set (accessories) on left/right of the cylinder module Fig. 19...
  • Page 30 Installation sequence Installing and aligning the Vitovalor PT2 (cont.) Fig. 20 Note If ordered as accessories: Fit the wiring chamber set DHW circulation pump at the same time.
  • Page 31 Installation sequence Installing and aligning the Vitovalor PT2 (cont.) Fig. 21...
  • Page 32 Installation sequence Installing and aligning the Vitovalor PT2 (cont.) Connections to the right 4x24 Nm 7 Nm Fig. 22...
  • Page 33 Installation sequence Installing and aligning the Vitovalor PT2 (cont.) Connections to the left 7 Nm 4x24 Nm Fig. 23...

  • Page 34: Further Installation On The Cylinder Module

    Installation sequence Installing and aligning the Vitovalor PT2 (cont.) Further installation on the cylinder module The angle connector is supplied in the "Tower cylinder connection set" box. Fig. 24 1. Fit the angle connector on the cylinder module. 4. Stick the spacer to the corners and in the middle of the side panel.
  • Page 35 Installation sequence Installing and aligning the Vitovalor PT2 (cont.) Fig. 25...

  • Page 36: Detaching The Front Panels Of The Gas Condensing And Fuel Cell Modules

    Installation sequence Installing and aligning the Vitovalor PT2 (cont.) Detaching the front panels of the gas condensing and fuel cell modules Fig. 26 Note Hook in the programming unit mounting bracket in the maintenance position. See page 57.

  • Page 37: Removing The Cylinder Module Front Panel

    Installation sequence Installing and aligning the Vitovalor PT2 (cont.) Removing the cylinder module front panel Fig. 27...

  • Page 38: Removing The Module Connection Lines

    Installation sequence Installing and aligning the Vitovalor PT2 (cont.) Removing the module connection lines Cylinder module to the left of the gas condensing and fuel cell module Fig. 28...

  • Page 39: Heating Water And Dhw Connections

    Installation sequence Installing and aligning the Vitovalor PT2 (cont.) Cylinder module to the right of the gas condensing and fuel cell module Fig. 29 Heating water and DHW connections Fig. 30 Heating return R DHW R ¾ ½ Cold water R Heating flow R ½...

  • Page 40: Safety Assembly To Din 1988 And En 806 At The Cold Water Connection

    Note Fit safety assembly on site immediately upstream of the cold water connection on the Vitovalor PT2. No shut-off equipment may be installed between the safety assembly and the Vitovalor PT2. Install a dis- charge line with constant fall and in a frost-free environment.

  • Page 41: Condensate Connection

    Installation sequence Condensate connection Route condensate hoses from the side openings to the building's drainage system. Connect hoses with a con- stant fall and a pipe vent to the building's drainage sys- tem. If required, install a condensate removal pump (acces- sories).

  • Page 42: Opening Heat Management Unit (Hmu) On Gas Condensing And Fuel Cell Module

    Installation sequence Opening heat management unit (HMU) on gas condensing and fuel cell module Fig. 34 1. Swivel the casing forwards across the detente Please note point. Electronic assemblies can be damaged by elec- trostatic discharge. 2. Undo the side release clips (red). Prior to commencing any work, touch earthed objects such as heating or water pipes to dis- 3.

  • Page 43: Connecting The Circulation Pump To P1

    Installation sequence Electrical connections (cont.) Connections to LV plugs Information on connecting accessories Outside temperature sensor When connecting accessories observe the sep- No function arate installation instructions provided with PlusBus them. CAN bus The mains connection and PlusBus wiring chamber of accessories takes place on the M2IO electronics module of the cylinder module.

  • Page 44: Connecting Power Supply Abh And Plusbus Jf To The Cylinder Mod- Ule

    Installation sequence Electrical connections (cont.) Connecting power supply and PlusBus to the cylinder module Fig. 37 Route cables through the openings with edge protec- tion. Connecting outlet temperature sensor of the cylinder module Fig. 38 1. Route the sensor lead through the openings with 2.

  • Page 45: Outside Temperature Sensor

    Installation sequence Electrical connections (cont.) Outside temperature sensor Fitting location for outside temperature sensor Outside temperature sensor connection ■ North or north-westerly wall, 2 to 2.5 m above Connect outside temperature sensor on plug ground level; in multi storey buildings, in the upper heat management unit.

  • Page 46: Connections On The M2Io Electronics Module Of The Cylinder Module

    Installation sequence Electrical connections (cont.) Connections on the M2IO electronics module of the cylinder module The mains connection and PlusBus wiring chamber of accessories takes place on the M2IO electronics mod- ule of the cylinder module. TS4 17 Fig. 40 A Cylinder temperature sensor top (connected in the delivered condition) B Cylinder temperature sensor bottom (con-...

  • Page 47: Power Supply For Accessories (230 V ~)

    Installation sequence Electrical connections (cont.) Connecting the DHW circulation pump (accessories or on site) Specification Rated current Recommended connecting H05VV-F3G 0.75 mm cable H05RN-F3G 0.75 mm Fig. 41 DHW circulation pump Plug on the M2IO electronics module Power supply for accessories (230 V ~) When positioned in wet rooms, the mains connection If the total system current exceeds 6 A, connect one or of accessories outside the wet area must not be car-...

  • Page 48: Power Supply To The System

    Install an isolator in the power cable to provide omnipolar separation from the mains for all active conductors, corresponding to overvoltage cate- gory III (3 mm) for complete isolation. The ON/OFF switches integrated into the Vitovalor PT2 fulfil this function. Routing connecting cables/leads Please note If connecting cables/leads come into contact with hot components, they will be damaged.

  • Page 49: Closing The Wiring Chamber

    Installation sequence Electrical connections (cont.) If the device is not integrated into a CAN bus sys- ■ tem: Switch must not be set to "ON". ■ If the device is integrated into a CAN bus system and is located at the beginning or end of this system (not in the middle) of the CAN bus system (connected to only one plug ): Set switch...

  • Page 50: Fitting The Front Panels Of The Gas Condensing And Fuel Cell Module

    Installation sequence Fitting the front panels of the gas condensing and fuel cell module Fig. 48 Fitting the programming unit Fig. 49 Lightguide at the bottom...

  • Page 51: Fitting The Cylinder Module Front Panel

    Installation sequence Fitting the cylinder module front panel Fig. 50...

  • Page 52: Splitting The Gas Condensing And Fuel Cell Modules

    Installation sequence Splitting the gas condensing and fuel cell modules Only if required for easier handling Note Residual water may escape during dismantling. Fig. 51...
  • Page 53 Installation sequence Splitting the gas condensing and fuel cell… (cont.) Fig. 52...

  • Page 54: Reassemble The Gas Condensing And Fuel Cell Module In Reverse Order

    Installation sequence Splitting the gas condensing and fuel cell… (cont.) Note Move lines with it when removing the gas condensing module. Note on assembly Push the slide coupling on the supply air side all the 8. 3. way down onto the fuel cell connection piece. Check correct position.

  • Page 55: Commissioning, Inspec-Steps - Commissioning, Inspection And Maintenance

    Commissioning, inspection, maintenance Steps - commissioning, inspection and maintenance Commissioning steps Inspection steps Maintenance steps Page • • • 1. Removing the front panels....................57 • 2. Checking the power supply • 3. Filling the trap on the gas condensing module with water..........58 •...
  • Page 56 Commissioning, inspection, maintenance Steps - commissioning, inspection and… (cont.) Commissioning steps Inspection steps Maintenance steps Page • • • 38. Checking the electrical connections for firm seating • • • 39. Checking for tightness the gas-bearing parts of the gas condensing module and connections to the fuel cell module under operating pressure........

  • Page 57: Removing The Front Panels

    Commissioning, inspection, maintenance Removing the front panels See page 36. Placing the programming unit in the service position Fig. 54 Note For commissioning and maintenance, the program- ming unit can be moved to hang on the appliance in the service position. Do not disconnect the connection cable.

  • Page 58: Filling The Trap On The Gas Condensing Module With Water

    Commissioning, inspection, maintenance Filling the trap on the gas condensing module with water Please note Water in the fuel cell module can cause dam- age. Do not fill the trap via the flue system. Fig. 55 1. Remove the mains distribution box for improved 5.

  • Page 59: Filling The Fuel Cell Module Trap

    Commissioning, inspection, maintenance Filling the fuel cell module trap Danger Escaping flue gas can damage your health. If the gas condensing module is going to be operated before commissioning the fuel cell module, also fill the trap on the fuel cell module. 4.

  • Page 60: Overview Of Water Circuits

    Commissioning, inspection, maintenance Overview of water circuits Fig. 57 The system has three separate water circuits, each Fuel cell module process circuit with different requirements in terms of the quality of fill water, plus the DHW water circuit. Gas condensing module and heating circuits (page 62) System separation circuit fuel cell module (page 68)

  • Page 61: Filling The Dhw Cylinder

    Commissioning, inspection, maintenance Filling the DHW cylinder Fig. 58 1. Check whether shut-off valves in the 3. The DHW cylinder has been completely filled when no more air flows out of the DHW draw-off point. cylinder loading circuit are open. Turn the shut-off valves anti-clockwise until the end-stop.

  • Page 62: Measuring Static Pressure

    Commissioning, inspection, maintenance Measuring static pressure Fig. 59 1. Fold down heat management unit . See 6. Measure static pressure and record measured page 42. value in report on page 162. Set value: Max. 30 mbar (3.0 kPa). 2. Remove cover panel 7.
  • Page 63 Commissioning, inspection, maintenance Filling gas condensing module and heating… (cont.) Please note Unsuitable fill water increases the level of deposits and corrosion and may lead to appli- ance damage. ■ Flush the heating system thoroughly before filling. Only use fill water of potable water quality. ■...
  • Page 64 Commissioning, inspection, maintenance Filling gas condensing module and heating… (cont.) Fig. 61 01. Check the pre-charge pressure of the external dia- 09. When fill water runs out without bubbles, fully phragm expansion vessel. See page 85. open shut-off valve and then 02.

  • Page 65: Commissioning The System

    Commissioning, inspection, maintenance Commissioning the system ON/OFF switch, gas condensing module and fuel cell module Fig. 62 ON/OFF switch, gas condensing module Fuel cell module ON/OFF switch Export meter Z2 ON/OFF switch on the fuel cell module Note If the fuel cell module is to be commissioned at a later time, also switch on the fuel cell module ON/OFF switch when operating the gas condensing module.
  • Page 66 Commissioning, inspection, maintenance Commissioning the system (cont.) Commissioning assistant Explanations and references procedure Commissioning Language By panel If commissioning is to be carried out on the heat generator programming unit. by software tool The device automatically switches on the WiFi Access Point. Further commissioning steps in accordance with the software tool instructions Trade fair mode Only for demonstration purposes.
  • Page 67 Commissioning, inspection, maintenance Commissioning the system (cont.) Commissioning assistant Explanations and references procedure Service Interval in burner hours un- Interval adjustable in steps of 100 h. til the next service Interval until the next serv- Interval adjustable in 0, 3, 6, 12, 18 or 24 months. Automatic flue gas sensor check The display shows: "Testing, flue gas temperature sensor"...

  • Page 68: Filling System Separation Circuit Fuel Cell Module

    Commissioning, inspection, maintenance Filling system separation circuit fuel cell module Please note Unsuitable fill water increases the level of deposits and corrosion. This can cause damage to the appliance. ■ The fill and top-up water must be softened, e.g. with a small heating water softener. Permissible total hardness of the fill and top- ■...

  • Page 69: Setting Max. Heating Output (Gas Condensing Module)

    Commissioning, inspection, maintenance Filling system separation circuit fuel cell… (cont.) 13. Regulate pressure again using fill valve 16. Lock filling connector and drain connection 1.5 bar. with the caps. 14. Check whether fill valve and drain valve 17. Once air stops escaping through air vent valve sealed.
  • Page 70 Commissioning, inspection, maintenance Measuring connection pressure (flow pressure) (cont.) Fig. 65 01. Switch off the gas condensing boiler ON/OFF 09. Record the actual value in the report on switch. page 162. 02. Fold down heat management unit . See 10. Shut down the appliance and close the gas shut- page 42.

  • Page 71: Function Sequence And Possible Faults (Gas Condensing Module)

    Commissioning, inspection, maintenance Measuring connection pressure (flow pressure) (cont.) Supply pressure (flow pressure) Measures Below 17.4 mbar (1.74 kPa) Do not commission the appliance. Notify the gas supply utility. 17.4 to 25 mbar (1.74 to 2.5 kPa) Start up the appliance. Above 25 mbar (2.5 kPa) Connect the separate gas pressure governor upstream of the system and set the pre-charge pressure to 20 mbar (2.0 kPa).

  • Page 72: Fuel Cell Module Commissioning

    Fuel cell module commissioning Further commissioning of the fuel cell module may If the gas condensing module is going to be oper- only be carried out by Viessmann Technical Service or ated before commissioning the fuel cell module: a contractor certified by Viessmann.

  • Page 73: Converting The Gas Type On The Fuel Cell Module

    Commissioning, inspection, maintenance Starting maintenance mode (cont.) Note "Fuel cell" If the fuel cell module does not immediately enter maintenance mode (e.g. in the shutdown phase), wait 3. "Maintenance mode ON" until maintenance mode is active. to confirm The following displays appear when maintenance mode is active: Note On condensing module programming unit:...

  • Page 74: Adjusting Parameters For The Mains Monitor (Ens) (Country Setting)

    If fault message F.196 / 13F0 appears: Immedi- ■ ately close gas shut-off valve on the fuel cell module or gas shut-off valve of the entire unit. Inform the Viessmann Technical Service. Fig. 68 08. Use to select "on". 01. Remove the cover of filling aperture 09.
  • Page 75 10 seconds. Initiate new starting procedure. plete. If a fault recurs or the cause of the fault is ■ unclear, notify Viessmann Technical Service. 12. Remove funnel from the filler neck and secure it to the front panel with the screw.

  • Page 76: Terminating Maintenance Mode And Activating Energy Manager

    Commissioning, inspection, maintenance Terminating maintenance mode and activating energy manager Note to confirm The fuel cell module will only start operating again if "Ecological", "Economical" or "Energy manager 5. Check that the "MNT" indicator on the fuel cell OFF" has been selected at the programming unit. module programming unit is OFF.

  • Page 77: Burner Removal (Gas Condensing Module)

    Commissioning, inspection, maintenance Tightness test on balanced flue system (annular… (cont.) Note Only the gas condensing module may be operational during the annular gap test procedure. ■ Disable power generation by the fuel cell module before starting the test. Turn off the ON/OFF switch on the fuel cell module. ■...

  • Page 78: Checking The Burner Gasket And Burner Gauze Assembly (Gas Condensing Module)

    Commissioning, inspection, maintenance Checking the burner gasket and burner gauze assembly (gas condensing module) Fig. 71 Check burner gauze assembly , electrodes 6. Insert thermal insulation ring and burner gauze gasket for damage. Only remove and replace com- assembly with gasket .

  • Page 79: Checking The Back Draught Safety Device

    Commissioning, inspection, maintenance Checking the back draught safety device 1. Undo 2 screws and remove fan 2. Remove back draught safety device 3. Check the damper and gasket of the back draught safety device for contamination and damage. Replace if necessary. 4.

  • Page 80: Cleaning Heating Surfaces (Gas Condensing Module)

    Commissioning, inspection, maintenance Cleaning heating surfaces (gas condensing module) Please note Scratches to the surfaces of the heat exchanger that come into contact with hot gas can result in corrosion damage. Brushing can cause deposits to become lodged in the gaps between the coils. Never use brushes to clean the heating sur- faces.
  • Page 81 Commissioning, inspection, maintenance Checking condensate drain and cleaning the trap… (cont.) Fig. 75 01. Remove the mains distribution box for improved 07. Fill trap with water and refit. accessibility. 08. Refit the hoses. 02. Hook in mains distribution box in the service posi- tion.

  • Page 82: Fitting The Burner (Gas Condensing Module)

    Commissioning, inspection, maintenance Fitting the burner (gas condensing module) Fig. 76 1. Insert the burner and tighten screws diagonally. 4. Connect the cables/leads: Torque: 6.5 Nm ■ Fan motor ■ Ionisation electrode 2. Fit gas supply pipe with a new gasket. Ignition unit ■...
  • Page 83 Commissioning, inspection, maintenance 5-yearly maintenance of fuel cell module (cont.) Draining the distilled water Note 03. Check that the fuel cell module is in maintenance This is required for the following maintenance work. mode: "MNT" indicator should be illuminated. The fuel cell module must be in maintenance mode. If not, switch on maintenance mode: See chapter To save time, the system user can activate mainte- "Switching on maintenance mode".

  • Page 84: Yearly Maintenance Of Fuel Cell Module

    "34" will appear on the display. In such a case, inform Viessmann Technical Service. 4. Press and hold SET for at least 3 s. 1. Turn on the ON/OFF switch on the fuel cell mod- "_CL"...

  • Page 85: Checking The Diaphragm Expansion Vessel And Pressure In The System Separation Circuit

    Commissioning, inspection, maintenance Checking the diaphragm expansion vessel and pressure in the system separation circuit Note Carry out this test on a cold system. The system must be shut down. The top panel can be removed for easier access. See page 52.

  • Page 86: Checking For Tightness The Gas-Bearing Parts Of The Gas Condensing Module And Connections To The Fuel Cell Module Under Operating Pressure

    Commissioning, inspection, maintenance Checking the electrical connections for firm seating Checking for tightness the gas-bearing parts of the gas condensing module and connections to the fuel cell module under operating pressure Danger Note Escaping gas leads to a risk of explosion. Only use suitable and approved leak detection agents Check gas equipment (including inside the appli- (EN 14291) and devices for the tightness test.
  • Page 87 Commissioning, inspection, maintenance Checking the combustion quality (cont.) Fig. 79 1. Connect a flue gas analyser at flue gas port 02. "Service" the boiler flue connection. 03. Enter password "viservice". 2. Open the gas shut-off valve, start the boiler and create a heat demand.

  • Page 88: Checking The Flue System For Unrestricted Flow And Leaks

    Commissioning, inspection, maintenance Checking the combustion quality (cont.) Fuel cell module 1. Connect a flue gas analyser at flue gas port Note A CO or O test on the fuel cell module is not neces- the boiler flue connection. sary. Note The fuel cell module must be in operation (power generation) for the measurement.

  • Page 89: Fitting The Cover Panel And Front Panel

    Commissioning, inspection, maintenance Fitting the cover panel and front panel Fit cover panel. ■ ■ To mount the front panels, see page 50. Instructing the system user The system installer should hand the operating instruc- This includes all components installed as accessories, tions to the system user and instruct the user in oper- e.g.

  • Page 90: System Configuration Calling Up Parameters

    System configuration (parameters) Calling up parameters Parameters are split into the following groups: 03. Enter password "viservice". ■ – "General" – "Boiler" 04. Use to confirm. – "DHW" – "Heating circuit 1/2/3/4" 05. "System configuration" "Fuel cell" – Heating systems with 1 heating circuit without mixer 06.
  • Page 91 System configuration (parameters) General (cont.) 897.0 "Screed drying" Setting Explanations Not active Screed drying can be set in accordance with selecta- ble temperature/time profiles. For individual profile curves, see chapter "Function description". Diagram 1 Diagram 2 Diagram 3 Diagram 4 Diagram 5 Diagram 6 912.0 "Automatic summer/wintertime changeover"...

  • Page 92: Boiler

    System configuration (parameters) General (cont.) 1098.5 "Calorific value" Setting Explanations Value is provided on the gas supplier's bill. Used for gas consumption data. 10.0000 5.0000 to Calorific value adjustable from 5.0000 to 40.0000 40.0000 kWh/m in increments of 0.0001 1139.0 "Outside temperature limit for cancelling reduced set room temperature" Setting Explanations Temperature limit for cancelling reduced set room...
  • Page 93 System configuration (parameters) Boiler (cont.) 522.3 "Interval until the next service" Setting Explanations Interval until the next service No interval selected 3 months 6 months 12 months 18 months 24 months 596.0 "Maximum heating output" Setting Explanations A limit can be set on the maximum heating output for heating mode.

  • Page 94: Dhw

    System configuration (parameters) Boiler (cont.) 1432.2 "Operating mode of primary circuit pump" Setting Explanations Internal circulation pump is operated with constant dif- ferential pressure. 1 to 20 Internal circulation pump is operated with rising differ- ential pressure. Adjustable from 1 to 20 mbar 1503.0 "Minimum heating output"...
  • Page 95 System configuration (parameters) (cont.) 503.0 "Scald protection" Setting Explanations The adjustable water temperature is limited to a maxi- mum value. Scald protection OFF Danger Risk of injury due to increased DHW tempera- ture. Inform the system user of the risk from the high- er outlet temperature at the taps.
  • Page 96 System configuration (parameters) Heating circuit 1, Heating circuit 2, Heating circuit 3, Heating circuit 4 Note Parameter values in bold are factory settings. 424.3 "Set flow temperature increased when switching from operation with reduced room temperature to operation with standard/comfort room temperature, heating circuit 1" Setting Explanations Set flow temperature increased when changing from...
  • Page 97 System configuration (parameters) Heating circuit 1, Heating circuit 2, Heating… (cont.) 428.4 "Duration for set flow temperature increase, heating circuit 3" Setting Explanations Duration for set flow temperature increase See also chapter "Function description" 60 min Delivered condition 60 min 0 to 120 Temperature rise adjustable from 0 to 120 min 430.3 "Set flow temperature increased when switching from operation with reduced room temperature to...
  • Page 98 System configuration (parameters) Heating circuit 1, Heating circuit 2, Heating… (cont.) 934.3 "Priority, DHW heating, heating circuit 2" Setting Explanations Priority of DHW heating over heating circuit pump and mixer Without DHW heating priority With DHW heating priority 934.5 "Differential temperature, heating circuit 2" Setting Explanations The flow temperature of the heat generator is higher...
  • Page 99 System configuration (parameters) Heating circuit 1, Heating circuit 2, Heating… (cont.) 935.6 "Operating mode, heating circuit 3" Setting Explanations See also parameter 935.7 Heating mode: Weather-compensated without room tem- Weather-compensated without room temperature in- perature hook-up fluence Weather-compensated with room tempera- Weather-compensated with room temperature influ- ture hook-up ence...
  • Page 100 System configuration (parameters) Heating circuit 1, Heating circuit 2, Heating… (cont.) 936.7 "Room influence factor, heating circuit 4" Setting Explanations The higher the value, the greater the influence of the room temperature on the set flow temperature of the heating circuit (heating curve). Operation with room temperature hook-up must be set for the heating cir- cuit (parameter 936.6).
  • Page 101 System configuration (parameters) Heating circuit 1, Heating circuit 2, Heating… (cont.) 1193.1 "Maximum flow temperature limit, heating circuit 2" Setting Explanations Maximum flow temperature limit for the heating circuit 74 °C Maximum limit in the delivered condition 74 °C 10 to 100 Setting range limited by heat generator-specific pa- rameters 1194.0 "Minimum flow temperature limit, heating circuit 3"...

  • Page 102: Heating Circuit 1, Heating Circuit 2, Heating Circuit 3, Heating Circuit 4

    System configuration (parameters) Heating circuit 1, Heating circuit 2, Heating… (cont.) 1396.1 "Heating limit: Economy function, outside temperature, heating circuit 2" Setting Explanations Heating circuit pump logic function (summer economy control): Heating circuit pump switches off when out- side temperature 1 K above selected value. Heating circuit pump switches back on when outside tempera- ture 1 K below selected value.
  • Page 103 System configuration (parameters) Fuel cell (cont.) 600.0 "Reset fuel cell service counter" Setting Explanations Reset service counter once service has been carried out. Service counter reset Reset the service counter. 1097.0 "Export price, electrical energy per kWh" Setting Explanations Export price for electrical energy per kWh 0.043 Export price in the delivered condition 0.043 0.001 to...

  • Page 104: Subscriber Numbers Of The Connected Extensions

    System configuration (parameters) Fuel cell (cont.) 1431.3 "CO2 factor power exported to grid per kWh" Setting Explanations factor in g/kWh Factor in the delivered condition 800 g/kWh ≙ 0 to 1000 Adjustable from 0.00 to 10.00 0 to 1000 g/kWh Subscriber numbers of the connected extensions All extensions connected to the heat generator must Rotary switch S1 settings:...
  • Page 105 System configuration (parameters) Subscriber numbers of the connected extensions (cont.) Function Electronics mod- Extension Setting Rotary switch S1 Select the operating status (e.g.): EM-EA1 Fault message input ■ EM-EA1 Fault message output ■ EM-EA1 Operating mode changeover ■...

  • Page 106: Diagnosis And Service Gas Condensing Module

    Diagnosis and service checks Gas condensing module Service menu Calling up the service menu Note to return to "Service, main menu" Tap the following buttons: Exiting the service menu 1. " " Tap the following buttons: 2. "Service" "Exit service menu" or 3.

  • Page 107: Resetting All Passwords To Delivered Condition

    10. Confirm twice with 06. "Service menu" Resetting all passwords to delivered condition Tap the following buttons: 5. Use to confirm. 1. Request master password from the Viessmann 6. "Change passwords" Technical Service. 7. "Reset all passwords" 2. " "...

  • Page 108: Checking Outputs (Actuator And Sensor Test)

    Diagnosis and service checks Gas condensing module (cont.) 5. "Message history" "Faults" to call up saved fault messages. For ■ further details, see the following chapter "Fault The following is displayed in the message lists: messages". ■ Date and time of the occurrence of the notifica- ■...
  • Page 109 Diagnosis and service checks Gas condensing module (cont.) The following actuator functions can be controlled depending on the system equipment: Display Explanation Gas condensing boiler group Fan speed Set value Burner fan speed in rpm (rotations/minute) Burner modulation, set Modulation level (in accordance with specific heat generator settings) ■...

  • Page 110: Fuel Cell Module

    Circulation pump for cyl- inder heating System separation cir- cuit pump Fuel cell module Checking power generated Operating instructions for Vitovalor PT2 Checking the gas consumption to reclaim fuel tax Operating instructions for Vitovalor PT2 Checking operating condition Operating instructions for Vitovalor PT2...

  • Page 111: Checking Grid Monitoring Parameters

    0.0 s Nominal voltage 230 V — Nominal current 3.26 A — Removing the SD card The SD card is delivered already in place. Data stor- age for the fuel cell module begins as soon the Vitovalor PT2 is commissioned.

  • Page 112: Inserting The Sd Card And Saving The Fuel Cell Module Data

    Diagnosis and service checks Fuel cell module (cont.) 1. Remove cover 2. Use to select "04" on the programming unit. 3. Press SET to confirm. 4. On the programming unit, use to select "oFF". 5. Press SET to confirm. 6. When the LED on the PCB flashes, data recording has finished.

  • Page 113: Troubleshooting Fault Display And Other Messages On The Programming Unit

    Troubleshooting Fault display and other messages on the programming unit If there is a fault, the display shows the fault message 2. Tap "Message lists". plus The fault messages appear in chronological order. Note Note If a central fault message facility is connected, this is When troubleshooting, always observe the switched on.
  • Page 114 Troubleshooting Fault display and other messages on the… (cont.) 6. "Faults" to call up saved fault messages. See fol- 7. If you wish to delete the list, tap . lowing table "Gas condensing module/program- ming unit fuel cell module fault messages". to confirm.

  • Page 115: Fault Messages On The Gas Condensing Module/Fuel Cell Module Programming Unit

    Troubleshooting Fault messages on the gas condensing module/fuel cell module programming unit Control unit System characteristics Cause Measures message Regulates without return tem- Lead break, return tem- Check return temperature sensor perature sensor. perature sensor (see page 140). Regulates without return tem- Short circuit, return tem- Check return temperature sensor perature sensor.
  • Page 116 Troubleshooting Fault messages on the gas condensing… (cont.) Control unit System characteristics Cause Measures message F.58 Control mode without room Short circuit, room tem- Check external room temperature influence perature sensor sensor of heating circuit or room temperature sensor of remote con- trol unit.
  • Page 117 Troubleshooting Fault messages on the gas condensing… (cont.) Control unit System characteristics Cause Measures message F.92 Affected extension functions ADIO electronics module Check connections and cables be- in emergency mode communication error tween ADIO electronics module and heat management unit. F.93 Affected extension functions M2IO electronics module...
  • Page 118 F.198/17F0 No power generation Fault, reformer burner ig- Reset the fault once. nition If the fault recurs, notify Viessmann Technical Service. F.199/19F0 No power generation Fault, reformer burner ig- Reset the fault once. nition If the fault recurs, notify Viessmann Technical Service.
  • Page 119 No power generation Air in the distilled water Carry out fuel cell module commis- circuit sioning again. If the fault recurs, notify Viessmann Technical Service. Note The message can only be cleared on the programming unit of the fuel cell module.
  • Page 120 – Outgassing/contamination in the air supply system (e.g. sili- cones, oils, paints, detergents, deposits, etc.) If faults recur, contact Viessmann Technical Service. Note Fault message can only be reset on the programming unit of the fuel cell module.
  • Page 121 – Outgassing/contamination in the air supply system (e.g. sili- cones, oils, paints, detergents, deposits, etc.) If faults recur, contact Viessmann Technical Service. Note Fault message can only be reset on the programming unit of the fuel cell module.
  • Page 122 Troubleshooting Fault messages on the gas condensing… (cont.) Control unit System characteristics Cause Measures message F.349 Control mode Air mass flow rate in fan Check mass flow sensor on the fan Burner is operating with a unit has not been correctly unit.
  • Page 123 Troubleshooting Fault messages on the gas condensing… (cont.) Control unit System characteristics Cause Measures message F.357 Burner in a fault state Insufficient gas supply Check that the gas shut-off valve is open. Optically check input-side screen in the gas train for contamination. Test static gas pressure and gas flow pressure.
  • Page 124 Troubleshooting Fault messages on the gas condensing… (cont.) Control unit System characteristics Cause Measures message F.369 Burner in a fault state Flame is lost immediately Check gas supply (gas pressure after flame formation (dur- and gas flow switch). ing safety time). Check balanced flue system for flue gas recirculation.
  • Page 125 Troubleshooting Fault messages on the gas condensing… (cont.) Control unit System characteristics Cause Measures message F.375 Burner in a fault state Ionisation current calibra- Check ionisation electrode and tion type: Calibration not connecting cable. Check plug-in performed. Minimum val- connection for loose connections. ue or termination criterion Check flue system or flue gas re- not reached.
  • Page 126 Troubleshooting Fault messages on the gas condensing… (cont.) Control unit System characteristics Cause Measures message F.377 Burner in a fault state Post-processing of ionisa- Check ionisation electrode and tion adjustment: Stabilisa- connecting cable. Check plug-in tion conditions for post- connection for loose connections. calibration not met Check flue system or flue gas re- circulation.
  • Page 127 Troubleshooting Fault messages on the gas condensing… (cont.) Control unit System characteristics Cause Measures message F.380 Burner in a fault state Flame is lost immediately Check gas supply (gas pressure after flame formation (dur- and gas flow switch). ing safety time). Check balanced flue system for flue gas recirculation.
  • Page 128 Troubleshooting Fault messages on the gas condensing… (cont.) Control unit System characteristics Cause Measures message F.401 Burner in a fault state Short circuit, ionisation Check ionisation electrode and voltage, signal 2 connecting cable. Reset device. F.402 Burner in a fault state Lead break, ionisation Check ionisation electrode and voltage, signal 2...
  • Page 129 Troubleshooting Fault messages on the gas condensing… (cont.) Control unit System characteristics Cause Measures message F.426 Burner in a fault state Short circuit, external un- Check connection to heat manage- lock signal ment unit. Reset device. F.427 Burner in a fault state Lead break, external un- Check connection to heat manage- lock signal...
  • Page 130 Troubleshooting Fault messages on the gas condensing… (cont.) Control unit System characteristics Cause Measures message F.448 Burner in a fault state Deviation, ionisation cur- Check ionisation electrode. rent signal Reset device. F.449 Burner in a fault state Error in scheduled pro- Reset device.
  • Page 131 Troubleshooting Fault messages on the gas condensing… (cont.) Control unit System characteristics Cause Measures message F.463 Burner in a fault state Ionisation current too low Check ionisation electrode and during calibration connecting cable. Check plug-in connection for loose connections. Heat generator installation and service instructions Check flue system or flue gas re- circulation.
  • Page 132 Troubleshooting Fault messages on the gas condensing… (cont.) Control unit System characteristics Cause Measures message F.464 Burner in a fault state Ionisation current too low Check ionisation electrode and during calibration. Differ- connecting cable. Check plug-in ence compared to previ- connection for loose connections.
  • Page 133 Communication error, Check remote control unit connect- unit not functioning Vitotrol wired remote con- ing cable and setting. trol F.523/18F0 No power generation Fault, reformer burner ig- Reset the fault once. nition If the fault recurs, notify Viessmann Technical Service.
  • Page 134 Cause Measures message F.524/18F1 No power generation Fault, reformer burner ig- Reset the fault once. nition If the fault recurs, notify Viessmann Technical Service. F.527 Burner locked out Update parameters faulty Repeat burner control unit flash or incomplete operation. F.528...

  • Page 135: Service Messages

    Troubleshooting Service messages Message, con- System characteristics Cause Measures trol unit / fuel cell Interval until the next serv- Perform maintenance. — System pressure too low Top up heating water — P.5/05F0 No power generation 5-yearly fuel cell service Carry out the 5-yearly service. required Note The message can only be cleared...

  • Page 136: Warnings

    Troubleshooting Warnings Message, con- System characteristics Cause Measures trol unit / fuel cell A.5/04F0 System in operation 45 days until the 5-yearly Carry out the 5-yearly service. service A.6/04F1 System in operation 30 days until the 5-yearly Carry out the 5-yearly service. service A.7/06F0 System in operation...

  • Page 137: Draining The System On The Heating Water And Dhw Sides

    Troubleshooting Repairs (cont.) Fig. 84 Draining the system on the heating water and DHW sides Only when necessary for repair work.
  • Page 138 Troubleshooting Repairs (cont.) Draining gas condensing module on the heating water side 1. Shut off connections on the heating water side. 2. Fit the supplied short hose to the drain valve and feed into a drain connection. 3. Open drain valve Note If necessary, open the air vent valves on the two outer shut-off valves above the modules.
  • Page 139 Troubleshooting Repairs (cont.) Draining the system separation circuit on the fuel cell module Fig. 88 1. If not yet set: Set maintenance mode. Wait until the 2. Place a sufficiently large, flat container under the fuel cell module is shut down. The cooling process drain opening is completed when the following display appears on the programming unit of the fuel cell module:...

  • Page 140: Checking The Temperature Sensors

    Checking the temperature sensors Outside temperature sensor 4. Depending on the test result, replace the lead or the outside temperature sensor. Temperature sensors inside Vitovalor PT2 For the electrical connection of the temperature sen- sors, see connection and wiring diagrams from page 155.
  • Page 141 Troubleshooting Repairs (cont.) Fig. 93 3. Rotate sensor (anti-clockwise) by turn to remove ¼ it (bayonet fitting). 4. Check the sensor resistance and compare it to the curve. 5. In the event of severe deviation replace the sensor. 6. Rotate sensor (clockwise) by turn to install it.

  • Page 142: Information On Replacing The Hmu Heat Management Unit And Bcu Burner Control Unit

    Troubleshooting Repairs (cont.) 3. Check the flue gas temperature sensor resistance. 6. Check for leaks on the flue gas side. See previous chapter. Replace faulty flue gas tem- perature sensor if required. Note If fault message F.416 continues to be displayed 4.

  • Page 143: Removing The Flow Sensor

    Troubleshooting Repairs (cont.) Fig. 96 1. Shut off and drain the boiler on the heating water 3. Check the connections on the heating water and and DHW sides. See page 137. DHW sides for contamination and scaling; replace the plate heat exchanger if necessary. 2.

  • Page 144: Removing The Hydraulic Unit

    Troubleshooting Repairs (cont.) Removing the hydraulic unit In case hydraulic unit components have to be replaced. 3x 5 Nm 24 Nm Fig. 98 Replacing the power cable When replacing the power cable, use the following cable type: H05V2V2-F 3 G 1.5 mm .

  • Page 145: Checking The Fuse

    Troubleshooting Repairs (cont.) Checking the fuse 1. Switch off the gas condensing module ON/OFF switch: See page 65. 2. Loosen the side locks and fold down the heat man- agement unit. 3. Remove cover 4. Check fuse F1 (see connection and wiring dia- gram).
  • Page 146 Troubleshooting Repairs (cont.) Check flow temperature sensor 1. Disconnect plug from the extension kit. 2. Check the sensor resistance and compare it to the curve. In the event of severe deviation replace the sensor. Temperature in °C Fig. 101 Sensor type: NTC 10 k Ω...

  • Page 147: Function Description Control Unit

    Function description Control unit Heating mode The control unit determines a set flow temperature for The electronic temperature limiter inside the burner the heat generator, subject to the outside temperature control unit limits the flow temperature. or the room temperature and the slope/level of the heating curve.

  • Page 148: External Extensions (Accessories)

    Function description External extensions (accessories) EM-EA1 extension Fig. 102 Digital input 1 Rotary switch for subscriber number Digital input 2 230 V relay output with 230 V input (no function) Power supply fÖ Digital input 3 (no function) Power supply for additional accessories fÖ...

  • Page 149: Filling Program

    Function description Control functions (cont.) Activate venting program: See "Commissioning, inspection and maintenance". Filling program In the delivered condition, the 3-way diverter valve is Activate filling program: See "Commissioning, set to its central position, so the system can be filled inspection and maintenance".
  • Page 150 Function description Control functions (cont.) The heating curve is offset along the set room temper- ature axis. The start and stop points of the heating cir- cuit pumps depend on the Heating limit... outside tem- perature, heating circuit... setting. Outside temperature in °C Fig.

  • Page 151: Screed Drying

    Function description Control functions (cont.) Screed drying When enabling screed drying, observe the information Different temperature profiles can be set via parameter provided by the screed manufacturer. 897.0. When screed drying is activated, the heating circuit pumps of all heating circuits are switched on and the Note flow temperature is maintained at the set profile.

  • Page 152: Raising The Reduced Room Temperature

    Function description Control functions (cont.) Temperature profile 4 Days Fig. 110 Temperature profile 5 Days Fig. 111 Temperature profile 6 Days Fig. 112 Ends after 21 days. 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 temperature raising can be set in parameters 1139.0 raised subject to the outside temperature.
  • Page 153 Function description Control functions (cont.) Example using the settings in the delivered condition Outside temperature in °C Fig. 113 Heating curve for operation at standard room tem- perature or comfort room temperature Heating curve for operation at reduced room tem- perature Reducing the heat-up time The value and duration of the additional increase in the...

  • Page 154: Electronic Combustion Controller Of Gas Condensing Module

    Electrical output of the fuel cell Electrical output is influence by the gas quality and the Vitovalor PT2 is operated with constant heat input (gas geodetic head. Electrical output is also reduced by a input) and constant overall efficiency. This means that...

  • Page 155: Connection And Wiring Dia-Overview Connection Diagrams

    Connection and wiring diagram Overview connection diagrams Fig. 115 A1 Mains distributor box A5 M2IO electronics module (cylinder module) A2 Heat management unit gas condensing module A7 EM-P1 or EM-EA1 extension A3 Burner control unit (BCU) A8 Fuel cell module junction box A4 Programming unit A9 SA 191 extension...

  • Page 156: Gram Mains Distributor Box

    Connection and wiring diagram Mains distributor box Fig. 116 A1 Mains distributor box Power supply Z1 Electricity meter BUS wiring chamber electricity meter Heat management unit gas condensing boiler Fuel cell control unit...

  • Page 157: Connection Scheme Heat Management Unit, Gas Condensing Module

    Connection and wiring diagram Connection scheme heat management unit, gas condensing module Fig. 117 A1 Heat management unit gas condensing module PlusBus A4 Programming module CAN bus A9 Switching mode power supply Floating input 230 V and output 230 V X...
  • Page 158 Connection and wiring diagram Connection scheme heat management unit, gas… (cont.) From mains distributor box To M2IO electronics module (cylinder module) To burner control unit To the fuel cell module To M2IO electronics module (cylinder module) External electricity meter To burner control unit...

  • Page 159: Burner Control Unit Connection Scheme

    Connection and wiring diagram Burner control unit connection scheme Fig. 118 PWM Control signal Power supply fÖ X... Electrical interfaces Ignition unit § A/B Common flow temperature sensor/high limit Fan motor a-Ö safety cut-out A Fan motor control a-Ö Outlet temperature sensor Water pressure sensor Ionisation electrode Burner control unit...

  • Page 160: Electronics Module M2Io Connection Scheme (Cylinder Module)

    Connection and wiring diagram Electronics module M2IO connection scheme (cylinder module) Fig. 119 Cylinder module control unit DHW circulation pump SA 191 extension No function Cylinder module control unit PCB No function SA 191 extension PCB PWM1 No function Cylinder loading pump PWM2 No function...
  • Page 161 Connection and wiring diagram Electronics module M2IO connection scheme… (cont.) Rotary switch Mains voltage output fÖ A Top cylinder temperature sensor PlusBus B Bottom cylinder temperature sensor To heat management unit gas condensing No function module (plug System return temperature sensor To heat management unit gas condensing No function module (plug...

  • Page 162: Commissioning/Service

    Commissioning/service reports Commissioning/service reports Settings and test values Set val- Commis- Mainte- Mainte- Mainte- sioning nance/ nance/ nance/serv- service service Date Signa- ture Static pressure mbar ≤ ≤ Supply pressure (flow pressure) For natural gas E mbar 17.4-25 For natural gas LL 1.74-2.5 Tick gas type.

  • Page 163: Specification

    Specification (cont.) Rated heating output Gas condensing system boiler (TV/TR 60/40 °C) 11.4 19.0 24.5 30.8 th max. (TV/TR 36/30 °C) th min. Rated heating input range 2.0 - 12.3 2.0 - 19.8 2.0 - 25.4 2.0 - 31.9 Rated heating input range for DHW heating 2.0 - 31.9 2.0 - 31.9 2.0 - 31.9...

  • Page 164: 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 165: Certificates Declaration Of Conformity

    Certificates Declaration of conformity We, Viessmann Werke GmbH & Co. KG, D-35107 Using the serial number, the full Declaration of Con- Allendorf, declare as sole responsible body that the formity can be found on the following website: named product complies with the European directives www.viessmann.co.uk/eu-conformity...

  • Page 166: Keyword Index

    Keyword index Keyword index Energy meter..............17 Air filter replacement..........83 Excess export............21, 23 Appliance Excess export system..........18 – Aligning..............26 Extension – Splitting..............52 – EM-EA1..............148 Extension kit for heating circuit with mixer....145 Bidirectional meter......18, 19, 20, 21, 24 Boiler, draining............
  • Page 167 Keyword index Keyword index (cont.) Inverter......... 18, 19, 20, 21, 23, 24 Ionisation electrode............ 79 Parallel mode............. 17 Parameter – Automatic summer/wintertime changeover..... 91 Language selection............ 65 – Burner hours until next service........92 Low voltage grid......18, 19, 20, 21, 23, 24 –...
  • Page 168 Wiring diagram............157 Service position, programming unit......136 WLAN connection............67 Set room temperature WLAN network............67 – Setting..............149 Viessmann Werke GmbH & Co. KG Viessmann Limited D-35107 Allendorf Hortonwood 30, Telford Telephone: +49 6452 70-0 Shropshire, TF1 7YP, GB...

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