Viessmann B2TF Installation And Service Instructions Manual Download

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Opening the HMU wiring chamber

Please note

Electronic assemblies can be damaged by elec-
trostatic discharge.
Prior to commencing any work, touch earthed
objects, such as heating or water pipes to dis-
charge static loads.

Fig. 10

Note

For further information on the connections, see the fol-
lowing chapters.

6 5 4 3 2 1

156

Fig. 11

Connections to 230 V~ plugs

fÖ

Power supply

230 V input, floating
230 V output

aBH

Switched power outlet

P1 Cylinder loading pump (connected in the deliv-

ered condition)

Installation sequence

Electrical connections

6151778

Installation

Summary of Contents for B2TF

Page 1: ...ce instructions for contractors VIESMANN Vitodens 222 F Type B2TF 1 9 to 32 kW Gas condensing storage combi boiler with 7 inch colour touchscreen Natural gas and LPG version VITODENS 222 F 6151778 GB 5 2020 Please keep safe ...

Page 2: ... system installer or a qualified per son authorised by the installer Regulations to be observed National installation regulations Statutory regulations for the prevention of accidents Statutory regulations for environmental protection Codes of practice of the relevant trade associations Relevant country specific safety regu lations Safety instructions for working on the system Working on the syste...

Page 3: ...ase 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 Auxiliary components spare and wearing parts Please note Spare and wearing parts that have not been tested together with the system can compromise its func tion Installing non authorised com ponents and making non approved mod...

Page 4: ...ater escapes from the appliance there is a risk of scalding Never touch hot heating water Condensate Danger Contact with condensate can be harmful to health Never let condensate touch your skin or eyes and do not swallow it Flue systems and combustion air Ensure that flue systems are clear and cannot be sealed for instance due to accumulation of condensate or other external causes Ensure an adequa...

Page 5: ...nces 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 Safety instructions Safety instructions cont 6151778 ...

Page 6: ...pump to P2 22 Floating switching contact connection 22 Checking the CAN bus terminator switch setting 22 Power supply for accessories at plug lH aBH 230 V 23 Power supply fÖ 25 WiFi operational reliability and system requirements 25 Routing connecting cables leads 26 Closing the wiring chamber 26 Fitting the front panel and programming unit 27 4 Commissioning inspec tion maintenance Steps commissi...

Page 7: ...5 Filling program 105 Heating curve 105 Screed drying 107 Raising the reduced room temperature 109 DHW heating 110 Heating the DHW loading cylinder from cold 110 Reheating when DHW is drawn off 110 Increased DHW hygiene 111 External heating circuit hook up if installed 111 9 Connection and wiring dia gram HMU heat management unit 112 BCU burner control unit 114 10 Commissioning service reports 115...

Page 8: ...ion and identified as follows Symbol Meaning Steps required during commissioning Not required during commissioning Steps required during inspection Not required during inspection Steps required during maintenance Not required during maintenance Intended use The appliance is intended solely for installation and operation in sealed unvented heating systems that comply with EN 12828 with due attentio...

Page 9: ...ociated nominal gas pressure are given on the boiler type plate The type plate also shows the other gas types and pressures with which the boiler can be operated A conversion within the stated natu ral gas groups is not required For conversion to LPG without conversion kit see Commissioning inspec tion and maintenance The Vitodens 222 F can only be delivered to the coun tries specified on the type...

Page 10: ...ance The condensate drain can be routed out of either the right hand or left hand side of the appliance When installing in recesses ensure that accessibility is guaranteed recommended wall clearance 100 mm Otherwise relocate the ON OFF switch and electrical connections The ON OFF switch can be relocated to the right hand side or the top The electrical connec tions can be relocated to the right han...

Page 11: ... boiler installation Use a connection set available as an accessory to make the connections on the gas and water sides The following overview shows sample connection sets for surface mounting with connection to the top or side Attaching accessories Before final siting attach all of the accessories that are to be mounted from the back of the boiler e g connec tion set First fit the connection set f...

Page 12: ...2 A Heating flow R B DHW R C Gas connection R D Cold water R E Heating return R F DHW circulation R separate accessories G External plug H Condensate drain to the side K Area for electrical cables on site junction box Note All height dimensions have a tolerance of 15 mm on account of the adjustable feet Preparing for installation Preparing for boiler installation cont 6151778 Installation ...

Page 13: ...hange the position of hose L used for ventilation 3 Route condensate hose M to side opening H see diagram on page 12 Connect condensate hose with a fall to the on site waste water pipe or trap Note The on site waste water pipe must have min Ø 40 mm to allow inflow with no risk of backing up Keep the drainage route from the appliance as short as possible Do not connect the drain hose directly to th...

Page 14: ...ugh guide N Safety assembly to DIN 1988 and EN 806 C F B D E GH D K D H L M D N K A O Fig 4 A Safety assembly to DIN 1988 and EN 806 acces sories for connection sets for flush mounting B Safety valve C Visible discharge pipe outlet point D Shut off valve E Flow regulating valve installation recommended F Pressure gauge connector G Non return valve H Drain outlet K Cold water L Drinking water filte...

Page 15: ... access to product spe cific information and product registration on the inter net The QR code contains the credentials for the registra tion and product information portal and the 16 digit serial number Attaching the additional type plate 1 Take the additional type plate from the documenta tion supplied with the boiler Note The documentation with the additional type plate and QR code marked with ...

Page 16: ...te to the outside of the appliance The additional type plate must be visible to the flue gas inspector Affix another QR code to the installation and serv ice instructions Removing the front panel 3 2 1 Fig 6 Installation sequence Siting the boiler cont 6151778 Installation ...

Page 17: ...h DHW circulation pump connection set accessories Separate installation instructions Filling the trap with water Note If there is a risk of frost only fill the trap just before commissioning Fig 8 Pour at least 0 3 l of water into the flue gas connection Danger During commissioning flue gas may escape from the condensate drain Always fill the trap with water before commis sioning Installation sequ...

Page 18: ...m In the commissioning assistant select the Multiple connections setting under Flue system type Do not carry out commissioning until the following conditions are met Free passage through the flue gas pipes Flue system with positive pressure is gas tight Inspection port covers checked for secure and tight seating Apertures for ensuring sufficient combustion air sup ply are open and cannot be closed...

Page 19: ...gas leads to a risk of explosion Check all connections on the gas side also inside the appliance for tightness Note Only use suitable and approved leak detection agents EN 14291 and devices for the tightness test Leak detection agents with unsuitable constit uents e g nitrides sulphides can cause material damage Remove residues of the leak detection agent after testing Please note Excessive test p...

Page 20: ...c loads 3 1 2x 2 Fig 10 Note For further information on the connections see the fol lowing chapters A B C 6 5 4 3 2 1 6 5 4 3 2 1 1 M 1 M 5 40 156 156 P1 96 74 1 91 91 5 P2 Fig 11 Connections to 230 V plugs fÖ Power supply lH 230 V input floating 230 V output aBH Switched power outlet P1 Cylinder loading pump connected in the deliv ered condition Installation sequence Electrical connections 615177...

Page 21: ... 3 2 1 6 5 4 3 2 1 C Fig 12 C Plug located externally on the right or left hand side of the appliance supplied separately Required plugs are supplied in separate packaging Provide strain relief for cables in the wiring chamber of the HMU heat management unit using cable ties Outside temperature sensor Fitting location for outside temperature sensor North or north westerly wall 2 to 2 5 m above gro...

Page 22: ... selected in the commissioning assistant by selecting the connected component Specification Rated current 1 A Rated voltage 230 V Floating switching contact connection Connection at plug lH One of the following functions can be connected External demand External blocking DHW circulation pump external demand pushbutton function pump runs for 5 min Not for Vitodens 222 W Room temperature controller ...

Page 23: ...d of the CAN bus system both plugs lA connected Do not set switch A to ON A C C B B 91 91 ON Fig 17 Power supply for accessories at plug lH aBH 230 V When positioned in wet rooms accessories outside the wet area must not be connected to the power sup ply at the HMU heat management unit If the boiler is not sited in a wet room the power supply for accesso ries can be connected directly to the HMU h...

Page 24: ...Bus system length max 50 m for 0 34 mm2 cable cross section and unshielded cable If the current flowing to the connected working parts e g circulation pumps is higher than the fuse rating of the relevant accessory only use the output con cerned to control an on site relay Accessories Internal fuse protec tion EM M1 EM MX mixer exten sion kit 2 A EM EA1 extension 2 A EM S1 extension not for Vitoden...

Page 25: ...tor and the WiFi router Internet connection with high availability Flat rate flat rate tariff without restriction on time or data volume Dynamic IP addressing DHCP delivered condition in the network WiFi Have this checked on site and if required set up by an IT expert prior to commissioning Set routing and security parameters in the IP net work LAN Enable port 80 port 123 port 443 and port 8883 fo...

Page 26: ...e of penetration C B A Fig 21 A WiFi router B Heat generator C Wall 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 tures for these cables leads are not exceeded Closing the wiring chamber 1 3 2x 2 Fig 22 Installation sequence ...

Page 27: ...27 2 1 A Fig 23 Lightguide A at the bottom Installation sequence Fitting the front panel and programming unit 6151778 Installation ...

Page 28: ...ze assembly 45 21 Checking and adjusting the ignition and ionisation electrodes 46 22 Checking the back draught safety devices 46 23 Cleaning the heating surfaces 47 24 Checking the condensate drain and cleaning the trap 47 25 Installing the burner 49 26 Checking the neutralising system if installed 27 Checking anode connection and anode earth current with anode tester 50 28 Draining the boiler on...

Page 29: ...e control unit to the heating system 57 41 Adjusting the heating curves 57 42 Calling up and resetting the maintenance display 57 43 Fitting the front panel 58 44 Instructing the system user 58 Commissioning inspection maintenance Steps commissioning inspection and cont 6151778 ...

Page 30: ...mati cally If the appliance has already been switched on See chapter Calling up the commissioning assistant at a later point page 34 3 Commission the heat generator and follow the commissioning assistant See the overview below Note Depending on the type of heat generator the accessories connected and other settings not all menu points will be displayed Note After the commissioning assistant has fi...

Page 31: ...ime program for DHW heating Apartment building A separate holiday program can be set for each heating circuit Gas type If operating with LPG switch to LPG Flue system type only Vitodens 2xx Single connection Only one heat generator is connected to the flue system factory setting Multiple connections Several heat generators are connected to the flue system Filling and venting System pressure Set va...

Page 32: ...g upstream of low loss header DHW heating with e g separate DHW cylinder connected upstream of the low loss header DHW heating down stream of low loss head er DHW heating with e g separate DHW cylinder connected downstream of the low loss header Buffer cylinder heating only System with heating water buffer cylinder without DHW heating DHW heating upstream of buffer cylinder DHW heating with e g se...

Page 33: ...ult message F 416 appears For further details regarding the flue gas temperature sensor test see Repairs Note If fault message F 416 continues to be displayed although the flue gas temperature sensor is correctly positioned Initial commissioning may result in burner faults e g caused by air in the gas line Eliminate the fault and reset the appliance Note The burner remains locked out until the tes...

Page 34: ... 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 Special antifreeze suitable for heating systems can be added to the fill water The antifreeze manufacturer must verify its suitability Fill and top up water with a water hardness in excess of the following values must be soft ened e ...

Page 35: ...tant or following chapter 7 Fill the heating system via boiler drain fill valve A Minimum system pressure 1 0 bar 0 1 MPa Check the system pressure at pressure gauge D Indicator must be in the green band Note Close air vent valve C and adjust system pres sure at boiler drain fill valve A 8 Close boiler drain fill valve A Activating the filling function Tap the following buttons 1 2 Service 3 Enter...

Page 36: ...e operating instructions 4 Open shut off valves B on the heating water side 5 Remove drain hose from air vent valve C and keep safe Venting the heating system A Fig 27 1 Check whether the air vent screw in quick action air vent valve A of the heating circuit pump is open 2 Close the gas shut off valve Switch the appliance on 3 Activate venting function see following steps 4 Call up the pressure di...

Page 37: ...r DHW When commissioning and after carrying out maintenance work check all water side connec tions for leaks Naming the heating circuits In the delivered condition the heating circuits are des ignated Heating circuit 1 Heating circuit 2 Heating circuit 3 and Heating circuit 4 if installed If the system user prefers the heating circuits can be renamed to suit the specific system To enter names for ...

Page 38: ...s type needs to be changed on the control unit see following chapter 1 Determine the gas type and Wobbe index by ask ing your local gas supply utility or LPG supplier 2 Record the gas type in the service report Converting the gas type only for operation with LPG 1 To change the gas type on the control unit see Commissioning the system with the commission ing assistant Note No mechanical adjustment...

Page 39: ...he boiler Note During commissioning the appliance can enter a fault state if there are airlocks in the gas line Reset the appliance after approx 5 s see operat ing instructions 07 Check the supply flow pressure For set values see the following table Note Use a suitable measuring device with a resolution of at least 0 1 mbar 0 01 kPa to check the supply pressure 08 Record the actual value in the re...

Page 40: ...rease set value Ensure heat transfer Yes Fan starts No Fault F 59 F 457 Check connection cables on fan Check power supply on fan Yes Ignition No Fault F 359 Check ignition module con trol voltage 230 V across plugs X18 1 and X18 3 on the burner control units Check the gas supply Yes Gas train opens No Fault F 357 Check the gas supply pres sure Yes Ionisation current builds No Fault F 369 F 380 Che...

Page 41: ...vice 03 Enter password viservice 04 Use to confirm 05 Select System configuration 06 Select Boiler 07 Parameter 596 0 Maximum heating output 08 Check that a sufficient flow rate is ensured If nec essary increase the heat transfer Confirm the message with 09 10 Set required value as a of the rated heating out put and confirm with Factory setting 100 11 End service functions Activating screed drying...

Page 42: ...ed heating output in kW Speed settings in the delivered condition in Min pump rate Max pump rate 11 60 60 19 60 70 25 60 85 32 60 100 In conjunction with a low loss header heating water buffer cylinder and heating circuits with mixer the internal circulation pump runs at a constant speed Speed setting Parameter 1100 2 in the Boiler group Residual head of integral circulation pump Residual head 0 k...

Page 43: ...t during system commissioning For this check the CO2 or O2 concentration in the combus tion air at the annular gap of the balanced flue pipe If the CO2 concentration is less than 0 2 or the O2 concentration is greater than 20 6 the flue pipe is deemed to be sufficiently gas tight If actual CO2 values are greater or O2 values are lower then pressure test the flue pipe with a static pressure of 200 ...

Page 44: ...el 4 Disconnect cables and leads from Fan motor A Adaptor CAN bus fan Ionisation electrode B Ignition unit C Earth D 5 Undo gas supply pipe fitting E 6 Detach Venturi extension F from fan unit 7 Undo 4 screws G and remove the burner Note Cover gas connection E so that no small parts can fall into it Commissioning inspection maintenance Removing the burner 6151778 ...

Page 45: ... and thermal insulation ring F Check components for damage 5 Install new burner gasket G Observe correct installation position Align the tab as per the dia gram 6 Insert thermal insulation ring F and burner gauze assembly D with gasket E Observe correct installation position Align the tab as per the dia gram 7 Align the hole in burner gauze assembly D with the burner door pin Secure burner gauze a...

Page 46: ...ack draught safety devices Only for multiple connections to a flue system or multi boiler systems with a flue gas cascade Back draught safety device in the mixing shaft of the burner A B Fig 36 1 Undo 2 screws and remove fan A 2 Remove back draught safety device B 3 Check the damper and gasket for dirt and damage Replace if necessary 4 Refit back draught safety device B Note Observe correct instal...

Page 47: ...er use brushes to clean the heating sur faces Please note Prevent damage due to cleaning water Cover electronic components with suitable watertight material Note Discolouration on the heat exchanger surface is a nor mal sign of use It has no bearing on the function and service life of the heat exchanger The use of chemical cleaning agents is not required A Fig 38 1 Use a vacuum cleaner to remove c...

Page 48: ...ach the supply hose with the retainer 8 Check that connections on the trap and the heat exchanger are seated correctly Note Route the drain hose without any bends and with a constant fall 9 Flush the heating surface again with min 0 3 l of water This will also fill the trap with water Please note If the trap is not filled with water flue gas can escape Only start the appliance when the trap has be...

Page 49: ...nit 4 Fit gas supply pipe E with a new gasket Torque 30 Nm 5 Check the gas connections for leaks Danger Escaping gas leads to a risk of explosion Check the fitting for gas tightness 6 Connect the cables leads Fan motor A Connect CAN bus fan to adaptor Ionisation electrode B Ignition unit C Earth D 7 Fit cover panel Checking the neutralising system if installed Commissioning inspection maintenance ...

Page 50: ...art design up to 26 kW 2 Remove earth cable B from tab C 3 Connect tester up to 5 mA in series between tab C and earth cable B If the current measures 0 3 mA the protective magnesium anode is OK If the current measures 0 3 mA or if there is no current at all inspect the protective magnesium anode visually see page 52 Draining the boiler on the DHW side 1 Shut off the DHW supply upstream of the app...

Page 51: ... ance excluding the DHW cylinder is drained via the cold water connection Lever position C The DHW circuit in the appli ance and the DHW cylinder are drained via the hot water connection The cold water connection remains filled Cleaning the loading cylinder Note According to EN 806 a visual inspection and if neces sary cleaning must be carried out no later than 2 years after commissioning and as r...

Page 52: ...re cleaner Please note Do not damage the cylinder Only use plastic cleaning equipment to clean the inside Never use cleaning agents containing hydrochloric acid 5 Thoroughly flush the loading cylinder after clean ing Checking and replacing the protective magnesium anode if necessary Visual inspection of protective magnesium anode If the anode has degraded to between 10 and 15 mm Ø we recommend rep...

Page 53: ...flange cover B 3 Fit flange cover B and tighten 8 screws D with a maximum torque of 25 Nm 4 Push earth cable C onto the tab 5 Fit cover E two part design up to 26 kW 6 Fill the loading cylinder with potable water Commissioning inspection maintenance Re assembling and filling the loading cylinder 6151778 ...

Page 54: ... valve of the diaphragm expan sion vessel until the pre charge pressure is 0 1 to 0 2 bar 10 to 20 kPa higher than the static system pressure 3 Top up with water until the charge pressure of the cooled system is at least 1 0 bar 0 1 MPa and is 0 1 to 0 2 bar 10 to 20 kPa higher than the pre charge pressure of the expansion vessel Permiss operating pressure 3 bar 0 3 MPa Note The expansion vessel i...

Page 55: ...of explosion Check gas equipment including inside the appli ance for gas leaks Note Only use suitable and approved leak detection agents EN 14291 and devices for the leak test Leak detec tion agents with unsuitable constituents e g nitrides sulphides can cause material damage Remove residues of the leak detection agent after test ing Checking the combustion quality The electronic combustion contro...

Page 56: ... Connect a flue gas analyser at flue gas port A on the boiler flue connection 2 Open the gas shut off valve Start the boiler Cre ate a heat demand 3 Adjust the lower heating output See the following chapter 4 Check the CO2 content If the actual value deviates from the permissible ranges implement steps lis ted above 5 Enter the actual value into the report 6 Adjust the upper heating output See the...

Page 57: ...vice instructions Adjusting the heating curves Tap the following buttons 1 2 Heating 3 Select Heating circuit 1 or Heating circuit for the required heating circuit 4 Heating curve 5 Set the heating curve according to the require ments of the system using Slope or Level 6 to confirm Calling up and resetting the maintenance display In the following cases will be displayed red indica tor flashes The ...

Page 58: ... hygiene For optimum DHW hygiene avoid DHW temperatures that are 50 C For larger systems and systems with low water exchange the temperature should not drop below 60 C Hygiene function The DHW can be heated to a specified higher set DHW temperature for a period of one hour To activate the function see the operating instructions Inform the system user what DHW temperatures should be set and the ris...

Page 59: ...eters 7 8 for the required value according to the fol lowing tables 9 to accept the set value General Note Parameter values in bold are factory settings 508 0 UTC time zone Setting Explanations Setting of the UTC time zone in which the appliance is located 2 The factory setting is UTC 1 h 24 to 24 Time difference adjustable from 12 h to 12 h in in crements of 0 5 h 528 0 Set flow temperature for e...

Page 60: ... changeover from winter to summertime Setting Explanations 3 Month of changeover March 1 to 12 Month of changeover adjustable from January to De cember 912 3 Earliest day of changeover from summer to wintertime Setting Explanations 25 Changeover from 03 00 h to 02 00 h occurs on the Sunday after or on this set date 1 to 31 Day of changeover adjustable from 1st to 31st of the month 912 4 Month of c...

Page 61: ...ure Setting Explanations Temperature limit for raising the reduced set room temperature see function description 14 Temperature limit in the delivered condition 14 C 60 to 10 Temperature limit adjustable from 60 to 10 C in 1 C increments 1504 0 Source for date and time Setting Explanations Selection of source for date and time The setting depends on the heat generator and acces sories Local 0 Fact...

Page 62: ... of the primary circuit pump in heating mode Setting Explanations Set speed of internal circulation pump In heating mode With external demand With demand in conjunction with a low loss header Delivered condition specified by settings specific to the appliance 20 to 100 Set speed adjustable from 20 to 100 1240 0 Operating mode of primary circuit pump Setting Explanations 1 Automatic Switched on reg...

Page 63: ...ssure Adjustable from 1 to 20 mbar 1503 0 Minimum heating output Setting Explanations A limit can be set on the minimum heating output for heating mode Delivered condition specified by settings specific to the appliance 5 to 100 Adjustable from 5 to 100 1606 0 Minimum burner pause time Setting Explanations The minimum burner pause time can be set subject to boiler load 0 Fixed setting for minimum ...

Page 64: ...ump for DHW heating Setting Explanations DHW circulation pump Off 0 In accordance with the selected time program On 1 ON during DHW heating to standard set value 503 0 Scald protection Setting Explanations The adjustable water temperature is limited to a maxi mum value OFF 0 Scald protection OFF Danger Risk of injury due to increased DHW tempera ture Inform the system user of the risk from the hig...

Page 65: ...temperature increased when changing from operation at reduced room temperature to operation at standard room temperature or comfort room tempera ture See also chapter Function description 0 K 0 Delivered condition increase 0 K 0 to 20 Temperature rise adjustable from 0 to 20 K 424 4 Duration for set flow temperature increase heating circuit 1 Setting Explanations Duration for set flow temperature ...

Page 66: ...erature increase heating circuit 3 Setting Explanations Duration for set flow temperature increase See also chapter Function description 60 min 60 Delivered condition 60 min 0 to 120 Temperature rise adjustable from 0 to 120 min 933 3 Priority DHW heating heating circuit 1 Setting Explanations Priority of DHW heating over the heating circuit Note If several heating circuits are connected only adju...

Page 67: ...able differential temperature See also chapter Function description 8 K 8 Differential temperature in delivered condition 8 K 0 to 20 Differential temperature adjustable from 0 to 20 K 934 6 Operating mode of heating circuit 2 Setting Explanations Heating mode Weather compensated without room tem perature hook up 4 Weather compensated without room temperature in fluence Weather compensated with ro...

Page 68: ...e 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 935 6 Change value for heating cir cuit with mixer only For a sample calculation see chapter Heating curve in the Function description 8 Room influence factor 0 to 64 Room influence adjustable fro...

Page 69: ...ange limited by heat generator specific pa rameters 1193 1 Maximum flow temperature limit heating circuit 2 Setting Explanations Maximum flow temperature limit for the heating circuit 74 C 74 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 Setting Explanations Minimum flow t...

Page 70: ...era ture 1 K below selected value 25 C 25 Delivered condition Heating limit at outside tempera ture 25 C 10 to 35 Heating limit adjustable from 10 to 35 C in 1 C incre ments 1397 1 Heating limit Economy function outside temperature heating circuit 3 Setting Explanations Heating circuit pump logic function summer economy control Heating circuit pump switches off when out side temperature 1 K above ...

Page 71: ...rcuit 3 with mixer Rotary switch on extension kit to 2 Note EM EA1 extensions may have the same subscriber number as the EM P1 EM M1 or EM MX extensions The following table shows an example of how a sys tem may be equipped Function Electronics mod ule Extension Setting Rotary switch S1 System with solar collectors ADIO EM S1 0 Heating circuit 2 with mixer ADIO EM M1 EM MX 1 Heating circuit 3 with ...

Page 72: ...tions System pressure setting Reset service Filling Air vent valve System log WLAN Information Energy statement reset Change passwords Commissioning Appliances detected Exit service Access point ON OFF Note Tap to return to Service main menu Changing the service password In the delivered condition viservice is preset as the password for accessing the Service menu Tap the following buttons 01 02 Se...

Page 73: ...as See Diagnosis in the service menu overview Operating data on heating circuits with mixer can only be called up if such components are installed in the system Note If a called up sensor is faulty appears on the display Calling up operating data Tap the following buttons 1 2 Service 3 Enter password viservice 4 Use to confirm 5 Diagnosis 6 Select required group e g General Calling up messages mes...

Page 74: ...t messages Service messages to call up saved service messages Status to call up the saved status messages Warnings to call up saved warning messages Information to call up saved service informa tion For messages see chapter Further messages 7 If you wish to delete messages tap 8 to confirm Checking outputs actuator test Note When the actuator test is started all actuators are ini tially disabled a...

Page 75: ...heating circuit pump heating circuit 2 with mixer in Heating circuit 3 pump speed Set value Speed heating circuit pump heating circuit 3 with mixer in Heating circuit 4 pump speed 2 Set value Speed heating circuit pump heating circuit 4 with mixer in Mixer HC2 Open Output for Mixer open enabled mixer extension kit Stop Current position is maintained Close Output for Mixer close enabled Mixer HC3 O...

Page 76: ...speed Set value Speed solar circuit pump in Circulation pump hy giene function On Off Circulation pump solar On Off 3 way valve solar Open Target position Close Stop Diagnosis and service checks Checking outputs actuator test cont 6151778 Diagnosis ...

Page 77: ...ing extension module The rotary switch position was set during installation To identify the affected module check the position of rotary switch S1 on the module if required Note See also page 73 The following is displayed Date and time of the occurrence of the fault Fault code Description of the fault Subscriber number of the component on which the fault has occurred PlusBus subscriber components ...

Page 78: ...78 C A B Fig 50 A HMI programming unit B BCU burner control unit C HMU heat management unit Troubleshooting Overview of electronics modules 6151778 Service ...

Page 79: ...5 wires 3 and 4 Replace faulty component if re quired F 11 No solar DHW heating or central heating backup Lead break collector tem perature sensor Check collector temperature sen sor Measure voltage at sensor input on electronics module Set value 3 3 V with sensor disconnected F 12 No solar DHW heating Short circuit collector temperature sensor Check collector temperature sen sor Measure voltage a...

Page 80: ...nsor Check flow temperature sensor low loss header Measure voltage at sensor input on electronics module Set value 3 3 V with sensor disconnected F 49 Burner in a fault state Lead break flue gas tem perature sensor Check flue gas temperature sen sor Reset the appliance F 50 Burner in a fault state Short circuit flue gas tem perature sensor Check flue gas temperature sen sor Reset the appliance F 5...

Page 81: ... cient flow sensor and circulation pump Check 3 way diverter valve func tion in actuator test Vent the system Reset the appliance once the flue system has cooled down F 67 Burner in a fault state Ionisation current lies out side the permissible range Check gas supply gas pressure and gas flow switch check gas solenoid valve and inlet strainer Check ionisation electrode for the following Clearance ...

Page 82: ...e Fan idle state not reached Reset the appliance If fault occurs repeatedly replace fan unit F 73 Burner in a fault state Internal communication error Reset the appliance If fault recurs replace BCU burner control unit See page 100 F 74 Burner locked out Internal circulation pump off No central heating and no DHW heating System pressure too low Top up with water Vent the system If the fault occurs...

Page 83: ...nect one by one Check that there aren t more than 2 Vitotrol 200 E connected to the HMU Check whether there is a short cir cuit at the PlusBus cable F 104 Depending on configuration of EM EA1 extension DIO electronics module External fault message in put active Check connected external device F 142 Burner in a fault state Communication error CAN bus Check the fan unit for correct function For this...

Page 84: ... incorrect Real time clock setting in correct Set the time and date F 342 No central heating no DHW heating Communication error burner control unit BCU Check connecting cable to the burner control unit plug X4 on BCU Check all plug in connections and cables of the internal CAN Remove all plugs except X4 X2 X16 and X18 from the BCU burn er control unit Check whether fault persists Note Several othe...

Page 85: ...mbly for contamination Reset the appliance If the fault oc curs repeatedly replace the gas fan unit F 350 F 351 Burner in a fault state Ionisation current lies out side the permissible range Replace BCU burner control unit See page 100 F 352 Burner in a fault state CO limit within appliance exceeded Check entire flue gas path for the following Flue gas recirculation Leaks Flue gas back pressure ca...

Page 86: ... the ignition elec trode insulation is damaged Check for a voltage of 230 V at the ignition module during the ig nition phase If not replace the BCU burner control unit If 230 V is present at the igni tion module but there is still a fault replace the ignition module Check connection cables and leads from ignition module and ignition electrode Reset the appliance F 361 Burner in a fault state Flam...

Page 87: ...ck system for condensate backup Visually inspect gas solenoid valve inlet and strainer on the in let side for contamination Note To prevent water damage detach fan unit before removing the burn er Deposits on the electrodes indi cate foreign bodies in the combus tion air Check the installation room and flue system for causes of the de posits For example Laundry de tergents cleaning agents toilet r...

Page 88: ...k ionisation electrode burner gauze assembly Clearance to burner gauze as sembly Contamination on electrode Reset the appliance F 381 Burner in a fault state Flame loss during operat ing phase Check gas supply gas pressure and gas flow switch Check balanced flue system for flue gas recirculation Check ionisation electrode burner gauze assembly Clearance to burner gauze as sembly Contamination on e...

Page 89: ...appliance F 401 Burner in a fault state IO electrode earth fault BCU burner control unit faulty Check IO electrode for earth fault If fault persists replace BCU burn er control unit See page 100 Reset the appliance F 402 Burner in a fault state BCU burner control unit faulty Replace BCU burner control unit See page 100 Reset the appliance F 403 Burner in a fault state Ionisation electrode earth fa...

Page 90: ... F 450 F 451 F 452 Burner in a fault state Error in scheduled pro gram run monitoring Reset the appliance If fault recurs replace BCU burner control unit See page 100 F 453 Burner in a fault state Synchronisation error se quence Reset the appliance If fault recurs replace BCU burner control unit See page 100 F 454 Burner in a fault state Incorrect software version Flash the correct software versio...

Page 91: ...required Reset the burner Note Deposits on the electrodes indicate foreign bodies in the combustion air Check the installation room and flue system for causes of the de posits For example Laundry de tergents cleaning agents toilet ries deposits in the ventilation air supply chimney If burner gauze assembly and ioni sation electrode have been re placed also clean fan unit gas air channel and Ventur...

Page 92: ...s indicate foreign bodies in the combustion air Check the installation room and flue system for causes of the de posits For example Laundry de tergents cleaning agents toilet ries deposits in the ventilation air supply chimney If burner gauze assembly and ioni sation electrode have been re placed also clean fan unit gas air channel and Venturi extension F 467 Burner in a fault state Gas supply ins...

Page 93: ...5 V F 473 No heat demand HMU heat management unit communication error Check connecting cable between burner control unit and HMU heat management unit F 474 Burner in a fault state Error in scheduled pro gram run monitoring Reset the appliance If fault recurs replace BCU burner control unit See page 100 F 517 Control mode remote control unit not functioning Lead break PlusBus ca ble incorrect appli...

Page 94: ...ADIO rotary switch F 545 Mixer closes Heating circuit pump is operational Short circuit flow temper ature sensor for heating circuit 2 with mixer Check flow temperature sensor mixer 2 Measure voltage at sensor input on electronics module Set value 3 3 V with sensor disconnected F 546 Mixer closes Heating circuit pump is operational Lead break flow tempera ture sensor heating circuit 3 with mixer C...

Page 95: ... messages Message on the display Meaning P 1 Service due after interval P 4 Top up heating water P 8 Service due after burner hours run Status messages Message on the display Meaning S 60 Summer mode active outside temperature economy function S 74 Heating suppression heating S 75 DHW circulation pump active S 94 No demand external hook up heating circuit 1 S 95 No demand external hook up heating ...

Page 96: ...oiler or one of the following components is fitted or removed Water filled pipework Heat exchanger Circulation pumps Plate heat exchanger Components fitted in the heating water or DHW circuit Water ingress can result in damage to other components Protect the following components against ingress of water Control unit components especially in the service position Electrical components Plug in connec...

Page 97: ... heating water side 2 Connect hose to air vent valve A and route it into a suitable container or drain outlet 3 By means of an actuator test move the 3 way valve to its centre position 4 Open air vent valve A and drain the boiler as much as required Troubleshooting Repairs cont 6151778 Service ...

Page 98: ...sition of guide lug B Sensor 1 Connections 1 and 3 Sensor 2 Connections 2 and 4 Compare the resistances with the value for the cur rent temperature from the following diagram In the event of severe deviation 10 replace the dual sensor Danger The dual sensor is directly immersed in the heating water risk of scalding Drain the boiler on the heating water side before replacing the sensor Danger Risk ...

Page 99: ...wing diagram If the results are very different from the curve 10 disconnect the wires from the sensor Repeat the test directly on the sensor Check the on site lead 2 core lead length up to 35 m with a cross section of 1 5 mm2 Depending on the test result replace the lead or the outside temperature sensor Flue gas temperature sensor 1 Check the lead and plug of flue gas temperature sensor C 2 Disco...

Page 100: ...flue gas tem perature sensor 3 Check the flue gas temperature sensor resistance See previous chapter Replace faulty flue gas tem perature sensor if required 4 Turn off the ON OFF switch 5 Turn the ON OFF switch back on Restart the commissioning assistant 6 Check for leaks on the flue gas side Note If fault message F 416 continues to be displayed although the flue gas temperature sensor has been co...

Page 101: ...intenance position see page 30 3 Undo the fixing screws 4 Detach the plate heat exchanger and remove towards the front 5 Check the connections on the heating water and DHW sides for contamination and scaling replace the plate heat exchanger if necessary 6 Install in reverse order using new gaskets Torque for fixing screws 3 2 Nm Troubleshooting Repairs cont 6151778 Service ...

Page 102: ...102 Removing the hydraulic unit and return pipe If components of the hydraulic unit have to be replaced 3x 5 4 2 3x 1 3 Fig 54 Troubleshooting Repairs cont 6151778 Service ...

Page 103: ...A B 2 5 Fig 55 Note After replacing the return pipe use a new cable tie Replacing the power cable When replacing the power cable only use the power cable available as a spare part from Viessmann Troubleshooting Repairs cont 6151778 Service ...

Page 104: ...he HMU heat management unit down 4 Remove cover A 5 Check fuse F1 see connection and wiring dia gram Danger Incorrect or improperly fitted fuses can lead to an increased risk of fire Insert fuses without using any force Posi tion fuses correctly Only use structurally identical types with the specified response characteristics Troubleshooting Repairs cont 6151778 Service ...

Page 105: ...ee Commissioning inspection and maintenance Filling program In the delivered condition the 3 way diverter valve is set to its central position so the system can be filled completely After the control unit has been switched on the 3 way diverter valve no longer goes into its central position If the system is to be filled with the control unit switched on the 3 way diverter valve is moved to its cen...

Page 106: ... Heating limit outside tem perature heating circuit setting 90 20 26 20 A C D E B Fig 58 Example 1 Adjusting the set room tempera ture from 20 to 26 C A Flow temperature in C B Outside temperature in C C Set room temperature in C D Heating circuit pump OFF E Heating circuit pump ON Changing the set room temperature Operating instructions Reduced room temperature 20 14 5 90 20 D E A C B Fig 59 Exam...

Page 107: ...ture via heating curve value 20 18 x 1 1 4 x 8 4 9 6 Increase in flow temperature via heating curve value 9 6 K Screed drying When enabling screed drying observe the information provided by the screed manufacturer When screed drying is activated the heating circuit pumps of all heating circuits are switched on and the flow temperature is maintained at the set profile After completion 30 days the h...

Page 108: ... Flow temperature C Days 50 40 30 20 10 1 5 10 15 20 25 30 Fig 62 Temperature profile 3 Flow temperature C Days 50 40 30 20 10 1 5 10 15 20 25 30 Fig 63 Temperature profile 4 Flow temperature C Days 50 40 30 20 10 1 5 10 15 20 25 30 Fig 64 Temperature profile 5 Flow temperature C 1 5 10 15 20 25 30 Days 50 40 30 20 10 Fig 65 Function description Control functions cont 6151778 Functions ...

Page 109: ...rt room temperature Depending on which set room temperature will become active in the next time phase The outside temperature limits for the start and end of temperature raising can be set in parameters 1139 0 and 1139 1 Example using the settings in the delivered condition A B 20 Outside temperature in C 80 70 60 50 40 30 0 5 10 15 5 10 Set room temperature in C 35 30 25 20 15 10 5 0 90 Flow temp...

Page 110: ...defaulted set value The cylinder loading pump is switched ON if the boiler water temperature set cylinder temperature The burner is switched ON if the boiler water temper ature set cylinder temperature and the cylinder loading pump is switched ON when the required boiler water temperature is reached The loading cylinder is heated up to the set cylinder temperature Heating stops when the specified ...

Page 111: ... is active plug 96 or digital input on DIO electronics module closed the heat ing circuit is supplied with heat If the external demand is inactive contact open heat supply to the heating circuit ends regardless of the current set room temperature or the switch ing time The following status messages are shown on the display of the control unit S 94 heating circuit 1 S 95 heating circuit 2 S 96 heat...

Page 112: ...with RF module TCU 200 A3 Power supply unit X Electrical interfaces Outside temperature sensor Cylinder temperature sensor fÖ Power supply jF PlusBus lA CAN bus lH Floating input 230 V output 230 V Connection and wiring diagram HMU heat management unit 6151778 Appendix ...

Page 113: ...ing pump P2 Parametrisable output for DHW circulation pump or Circulation pump for heating circuit without mixer A To BCU burner control unit B To BCU burner control unit Connection and wiring diagram HMU heat management unit cont 6151778 Appendix ...

Page 114: ... sÖ Internal circulation pump primary pump dÖ 3 way diverter valve dG Gas solenoid valve fÖ Power supply gF Ignition unit a Ö Fan motor a ÖA Fan motor control aND Water pressure sensor aNDA Water pressure sensor A BCU burner control unit B HMU heat management unit plug aBH C HMU heat management unit plug X4 Connection and wiring diagram BCU burner control unit 6151778 Appendix ...

Page 115: ...rbon dioxide content CO2 For natural gas At lower heating output by vol See Check ing the com bustion qual ity Com mission ing At upper heating output by vol For LPG At lower heating output by vol At upper heating output by vol Oxygen content O2 At lower heating output by vol At upper heating output by vol Carbon monoxide content CO At lower heating output ppm 1000 At upper heating output ppm 1000...

Page 116: ...tegory 6 Gas supply pressure Natural gas mbar kPa 20 2 20 2 20 2 LPG mbar kPa 50 5 50 5 50 5 Max permiss gas supply pressure 3 Natural gas mbar kPa 25 0 2 5 25 0 2 5 25 0 2 5 LPG mbar kPa 57 5 5 75 57 5 5 75 57 5 5 75 Sound power level to EN ISO 15036 1 At partial load dB A 38 8 38 8 38 8 At rated heating output DHW heating dB A 49 2 50 7 52 6 Power consumption in the delivered condi tion incl cir...

Page 117: ...ing wa ter side PMS bar MPa 3 0 3 Weight Excl heating water and DHW kg 111 5 111 5 111 5 Incl heating water and DHW kg Water capacity excl diaphragm expansion vessel l 3 0 3 0 3 0 Max flow temperature C 82 82 82 Max flow rate Limit for the use of hydraulic separation l h See residual head graphs Nominal circulating water volume At TF TR 80 60 C l h 818 1076 1374 Expansion vessel Capacity l 18 18 1...

Page 118: ... h 1 76 2 29 2 71 Flue gas parameters Temperature at a return temperature of 30 C At rated heating output C 41 46 59 At partial load C 38 38 38 Temperature at a return temperature of 60 C C 67 72 77 Mass flow rate for DHW heating Natural gas At rated heating output kg h 40 4 54 2 62 1 At partial load kg h 3 2 3 2 3 2 LPG At rated heating output kg h 39 8 53 2 61 1 At partial load kg h 3 9 3 9 3 9 ...

Page 119: ...lumetric settings Due to fac tory settings the gas pressure must not be altered from these values Reference 15 C 1013 mbar 101 3 kPa Flue system types Available in the following countries Type of flue system AE AM AZ BA BG BY CH CY CZ DK EE ES FI FR GB GR HR HU IE IS IT KG KZ LI LT LU LV MD ME MT NL NO PL PT RO RS RU SE SK TR UA UZ B23 B23P B33 C13 C33 C53 C63 C83 C83P C93 BE B23 B23P B33 C13 C33 ...

Page 120: ...ed gas volume subject to the prevailing gas quality To check the combustion quality the CO2 content or the O2 content of the flue gas is measured The pre vailing air ratio is determined using the actual values To achieve optimum combustion control the system regularly carries out an automatic self calibration also after power failures shutdown For this the combus tion is briefly regulated to maxim...

Page 121: ...ystem are not part of ordi nary household waste For decommissioning the system isolate the system from the power supply and allow components to cool down where appropriate All components must be disposed of correctly Disposal Final decommissioning and disposal 6151778 Appendix ...

Page 122: ...iance with Directive 2014 53 EU Using the serial number the full Declaration of Con formity can be found on the following website www viessmann co uk eu conformity Manufacturer s certificate according to the 1st BImSchV Germany We Viessmann Werke GmbH Co KG D 35107 Allendorf confirm that the product Vitodens 222 F complies with the NOx limits specified by the 1st BImSchV paragraph 6 Allendorf 1 Fe...

Page 123: ...ault codes 79 Fault message calling up 77 Fault messages Display 77 Fault messages calling up 73 Faults Display 77 Filling function 35 105 Fill water 34 Flow pressure 40 Flow temperature sensor 98 Flue gas temperature sensor 99 Function descriptions 105 Fuse 104 G Gas supply pressure 39 Gas train 39 Gas type 38 Gas type conversion 38 H Heating circuit pump for heating circuit without mixer 105 Hea...

Page 124: ... local time 59 Parameters calling up 59 Parameters for commissioning 57 Password Changing 72 Passwords Reset to delivered condition 73 Plate heat exchanger 101 Port 123 25 Port 443 25 Port 80 25 Port 8883 25 Protective anode Anode current and anode checking 50 Checking anode 52 Replacing anode 52 R Raising flow temperature Operation with room temperature hook up 107 Raising reduced room temperatur...

Page 125: ...125 6151778 ...

Page 126: ...126 6151778 ...

Page 127: ...127 6151778 ...

Page 128: ... Shropshire TF1 7YP GB Telephone 44 1952 675000 Fax 44 1952 675040 E mail info uk viessmann com Viessmann Werke GmbH Co KG D 35107 Allendorf Telephone 49 6452 70 0 Fax 49 6452 70 2780 www viessmann com 6151778 Subject to technical modifications ...

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