Viessmann B2UA Installation And Service Instructions Manual Download Page 74

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System version 2

One heating circuit with mixer M2 and a low loss header

4
5

Vitodens 242-F

Outside temperature sensor

Heating circuit with mixer M2

Temperature limiter to restrict the
maximum temperature of underfloor
heating systems

Flow temperature sensor M2

Heating circuit pump M2

Extension kit for one heating circuit
with mixer M2

Low loss header

Flow temperature sensor, low loss
header

Solar collectors

Collector temperature sensor

Function/system components

Code

Adjust

Group

Operation with LPG

82:1

"General"

System with

only

one heating circuit with mixer, with

extension kit for mixer with DHW heating

00:4

"General"

System

with

DHW circulation pump:

DHW circulation pump connected at internal exten-
sion H1 or H2

—

System

with

low loss header

04:0

"Boiler"

Commissioning, inspection, maintenance

Further details regarding the individual steps

(cont.)

5773 238 GB

Summary of Contents for B2UA

Page 1: ...tractors VIESMANN Vitodens 242 F Type B2UA 3 2 to 26 kW Gas condensing solar storage combi boiler Gas council no 41 819 18 41 819 19 Natural gas and LPG version For applicability see the last page VITODENS 242 F 5773 238 GB 4 2013 Please keep safe ...

Page 2: ...accidents Statutory regulations regarding envi ronmental protection Codes of practice of the relevant trade associations All current safety regulations as defined by DIN EN DVGW TRGI TRF VDE and all locally applicable standards Gas Safety Installation Use Regu lations the appropriate Building Regulation either the Building regulations the Building Regulation Scotland Build ing Regulations Northern...

Page 3: ... can create neg ative pressure If the boiler is operated at the same time this can lead to reverse flow of the flue gas Danger The simultaneous operation of the boiler and appliances that extract air to the outside can result in life threatening poison ing due to reverse flow of the flue gas Fit an interlock circuit or take suit able steps to ensure a sufficient supply of combustion air Working on...

Page 4: ... the system can compromise its function Installing non author ised components and making non approved modifications or conversions can compromise safety and may invalidate our warranty For replacements use only orig inal spare parts supplied or approved by Viessmann Safety instructions Safety instructions cont 5773 238 GB ...

Page 5: ...mmissioning inspection maintenance Steps commissioning inspection and maintenance 42 Further details regarding the individual steps 45 Code 1 Calling up coding level 1 85 General 85 Boiler 88 DHW 89 Solar 89 Heating circuit 90 Code 2 Calling up coding level 2 97 General 97 Boiler 105 DHW 106 Solar 108 Heating circuit 110 Diagnosis and service scans Service menu 119 Diagnosis 120 Checking outputs a...

Page 6: ...ram 170 External connection diagram 171 Connection diagram solar control module 173 Parts lists Ordering individual parts 174 Overview of the assemblies 175 Casing 176 Hydraulics 178 Cylinder module 181 Heat cell 186 Control unit 189 Miscellaneous 191 Commissioning service reports 193 Specification 194 Certificates Declaration of conformity 195 Manufacturer s certificate according to the 1st BImSc...

Page 7: ...nction with permissi ble system specific components has been carried out Commercial or industrial usage for a pur pose other than heating the building or DHW does not comply with regulations Any usage beyond this must be approved by the manufacturer for the individual case Incorrect usage or operation of the appli ance e g the appliance being opened by the system user is prohibited and results in ...

Page 8: ...8 Dividing the boiler into sections 6 7 3 5 2 1 4 2x Preparing for installation Preparing the installation cont 5773 238 GB ...

Page 9: ...9 8 9 4x 8x 12 10 11 Preparing for installation Preparing the installation cont 5773 238 GB Installation ...

Page 10: ...10 13 14 15 Preparing for installation Preparing the installation cont 5773 238 GB ...

Page 11: ...11 16 Preparing for installation Preparing the installation cont 5773 238 GB Installation ...

Page 12: ...12 sF 17 19 21 20 18 Preparing for installation Preparing the installation cont 5773 238 GB ...

Page 13: ...13 24 22 23 Preparing for installation Preparing the installation cont 5773 238 GB Installation ...

Page 14: ...14 27 26 25 Preparing for installation Preparing the installation cont 5773 238 GB ...

Page 15: ...15 28 2x 2x 29 30 Preparing for installation Preparing the installation cont 5773 238 GB Installation ...

Page 16: ...he gas and water sides Fitting accessories Fit all accessories that are installed at the back of the boiler e g connection sets Please note Avoid device damage Connect all pipework free of load and torque stress Preparing the connections on site Connection set installation instructions Preparing for installation Preparing the installation cont 5773 238 GB ...

Page 17: ...d walls with connection to the top or side 65 1930 2008 100 719 46 40 50 1367 1422 1477 1532 1587 1642 1697 1752 1807 1875 1900 1135 1100 140 60 320 370 436 449 A H A H B D F E G C G E C B F D M K K L Preparing for installation Preparing the installation cont 5773 238 GB Installation ...

Page 18: ...ll L Condensate drain to the side M Wiring area Rated heating output range 3 2 to 19 kW 6 5 to 26 kW a mm 201 224 Note All height dimensions have a tolerance of 15 mm due to the adjustable feet 1 Prepare the heating water connec tions Thoroughly flush the heating sys tem Note Should an additional expansion ves sel be required on site connect this vessel in the heating return Preparing for installa...

Page 19: ...ate connection to the on site drain line or siphon Drain towards the back See dimensions for condensate hose O and position K in the dia gram on page 17 Drain towards the side aperture See position L in diagram on page 17 5 Prepare the gas connection accord ing to TRGI or TRF or local regula tions 6 Prepare the electrical connections Power cable NYM J 3 x 1 5 mm2 max fuse rating 16 A 230 V 50 Hz A...

Page 20: ...harge pipe outlet point D Shut off valve E Flow regulating valve installation recommended F Pressure gauge connection G Non return valve H Drain K Cold water L Drinking water filter M Pressure reducer to DIN 1988 2 Dec 1988 issue N Non return valve pipe separator O Cold water connection at connec tion set accessories Preparing for installation Preparing the installation cont 5773 238 GB ...

Page 21: ...21 Removing the front panels 2 4 2x 1 3 5 Installation sequence Installing the boiler 5773 238 GB Installation ...

Page 22: ...22 Siting and levelling the boiler 1 2 SW17 Installation sequence Installing the boiler cont 5773 238 GB ...

Page 23: ...B D E E D B A A B D E C C C Shown with connection sets for finished walls accessories A Heating flow R B DHW R C DHW circulation R separate accessory D Cold water R E Heating return R Installation sequence Installing the boiler cont 5773 238 GB Installation ...

Page 24: ... B Solar flow R or Ø 22 mm smooth pipe Note The following components are instal led inside the appliance at the factory Circulation pump for the solar circuit Expansion vessel in the solar return Safety valve on the solar side Install the pressure gauge for the solar circuit on site Installation sequence Installing the boiler cont 5773 238 GB ...

Page 25: ...nnection is secure GB only The condensate pipe is connected with the discharge pipe of the safety valve The condensate hose supplied meets the temperature requirements that are part of the CE certification We recommend connecting the con densate pipe internally to the domestic waste water system either directly or via a tundish If the condensate pipe is routed out side the building use a pipe with...

Page 26: ...he following conditions are met Free passage through the flue gas pipes Flue system with positive pressure is gas tight Apertures for ensuring sufficient com bustion air supply are open and cannot be closed off Applicable regulations on installing and commissioning flue systems have been followed Danger Leaking or blocked flue systems or an insufficient supply of com bustion air cause life threate...

Page 27: ... below ground level 1 Secure gas shut off valve to gas con nection A 2 Carry out a tightness test Note Only use suitable and approved leak detection agents EN 14291 and devices for the tightness test Leak detection agents with unsuitable con stituents e g nitrites sulphides can cause material damage Remove residues of the leak detec tion agent after testing Installation sequence Installing the boi...

Page 28: ...ssure 150 mbar 15 kPa Where higher pres sure is required for tightness tests disconnect the boiler and the gas valves from the gas supply pipe undo the fit ting 3 Vent the gas line For conversion to a different gas type see page 53 Installation sequence Installing the boiler cont 5773 238 GB ...

Page 29: ...29 2x 4x 4 3 5 2 1 Installation sequence Opening the control unit casing 5773 238 GB Installation ...

Page 30: ...45 40 96 20 35 100 21 A B A Radio clock receiver B Jumper Connections to 230 V plug fÖ Power supply lH Power supply for accessories External demand blocking Connections to LV plug X3 Plug X3 can be removed to facili tate installation Outside temperature sensor Flow temperature sensor for low loss header accessories A Radio clock receiver aVG KM BUS subscriber accessories Installation sequence Elec...

Page 31: ...or wireless accessory Wireless base station installation and service instructions Fitting location for outside tempera ture sensor North or north western wall 2 to 2 5 m above ground level in multi storey buildings in the upper half of the second floor Not above windows doors or vents Not immediately below balconies or gutters Never render over Outside temperature sensor connec tion 2 core lead le...

Page 32: ...te installation instructions Plug lH Burner operation is load dependent if the contact is closed The boiler water is heated to the value set in coding address 9b in group General 1 The boiler water temperature is limited by this set value and the electronic maximum limit coding address 06 in group Boiler 2 Please note Live contacts lead to short cir cuits or phase failure The external connection m...

Page 33: ...led Coding address 5F in group DHW 3 Codes Set 3A DE1 3b DE2 or 3C DE3 in group General 1 to 2 Effect of the function on the relevant heating circuit pump Coding address d7 in group Heating circuit only with weather compensa ted control units Effect of the function on the circulation pump for cylinder heating if installed Coding address 5F in group DHW 3 External demand via 0 10 V input Connection...

Page 34: ...ion instructions The burner is switched off if this contact is closed The heating circuit pump and if installed the circulation pump for cyl inder heating are switched according to the set code see following table Codes Please note Live contacts lead to short cir cuits or phase failure The external connection must be potential free and comply with the requirements of safety cate gory II Installati...

Page 35: ...up Heating circuit only with weather compensa ted control units Effect of the function on the circulation pump for cylinder heating if installed Coding address 5E in group DHW 3 Power supply for accessories at plug lH 230 V Where the boiler is installed in a wet area the power supply connection for accessories must not be made at the control unit If the boiler is installed out side wet areas then ...

Page 36: ...ircuit with mixer M2 C Extension kit for heating circuit with mixer M3 D Extensions AM1 or EA1 E ON OFF switch The output concerned should only be used to control an on site relay if the cur rent flowing to the connected working parts e g circulation pumps is higher than the safety level of the relevant accessory Accessories Internal fuse protection Extension kit for heat ing circuit with mixer 2 ...

Page 37: ...ll an isolator in the power cable which simultaneously separates all non earthed conductors from the mains with contact separation of at least 3 mm In addition we recommend the instal lation of an AC DC sensitive RCD RCD class B for DC fault currents that can be created by energy efficient equipment Max fuse rating 16 A Installation sequence Electrical connections cont 5773 238 GB Installation ...

Page 38: ... and securing cables leads on site ensure that the maximum permissible tem peratures for these cables leads are not exceeded A LV connections B 230 V connections C Internal extension D Main PCB E Communication module accesso ries F Cable grommet for power cable Installation sequence Electrical connections cont 5773 238 GB ...

Page 39: ...39 5 4 2 6 2x 3 1 Installation sequence Closing the control unit casing 5773 238 GB Installation ...

Page 40: ...into the control unit support Note The programming unit can also be inser ted into a wall mounting base accesso ries near the boiler Wall mounting base installation instructions Installation sequence Closing the control unit casing cont 5773 238 GB ...

Page 41: ...41 2x 1 4 2 3 5 Installation sequence Fitting the front panels 5773 238 GB Installation ...

Page 42: ...er 48 10 Venting the heating system 49 11 Filling the siphon with water 50 12 Filling the solar circuit 51 13 Checking all connections on the heating water side and DHW side for leaks 14 Designating the heating circuits 52 15 Checking the gas type 52 16 Gas type conversion only for operation with LPG 53 17 Checking the static and supply pressure 53 18 Function sequence and possible faults 55 19 Se...

Page 43: ...sembling and filling the primary store 68 34 Checking the diaphragm expansion vessel and system pressure 69 35 Checking the pre charge pressure and the DHW expansion vessel if installed 70 36 Checking the function of safety valves 37 Checking firm seating of electrical connections 38 Checking all gas equipment for tightness at operating pressure 70 39 Checking the combustion quality 71 40 Checking...

Page 44: ...Maintenance steps Page 45 Scanning and resetting the Service display 83 46 Fitting the cover panel and front panels 83 47 Instructing the system user 84 Commissioning inspection maintenance Steps commissioning inspection and cont 5773 238 GB ...

Page 45: ...y Fill and top up water with a water hardness in excess of the following values must be softened e g with a small soft ening system for heating water Total permissible hardness of the fill and top up water Total heating output Specific system volume Conversion rate 1 mol m3 100 ppm kW 20 l kW 20 l kW to 50 l kW 50 l kW 50 3 0 mol m3 2 0 mol m3 0 02 mol m3 50 to 200 2 0 mol m3 1 5 mol m3 0 02 mol m...

Page 46: ... the diverter valve will still be in its central position and the system will be completely fil led 5 If the control unit had already been switched on before filling began Switch control unit ON and activate fill program see next chapter Note If the control unit has not been switched on prior to filling the system then the servomotor of the diverter valve will still be in its central position and ...

Page 47: ... display is in German factory setting Extended menu 1 å 2 Einstellungen 3 Sprache 4 Select the required language with Sprache Dansk Cesky Bulgarski Deutsch Wählen mit ê ê ç DE BG CZ DK ê ê Setting the time and date The time and date need to be reset dur ing commissioning or after a prolonged time out of use Extended menu 1 å 2 Settings 3 Time Date 4 Set current time and date Commissioning inspecti...

Page 48: ...he boiler A C B 1 Close the shut off valves on the heat ing water side 2 Remove cover panel A 3 Push the drain hose onto air vent valve B and connect to a drain 4 Open air vent valve B and fill valve C in the heating return and vent using mains pressure flush until no more air noise can be heard 5 First close air vent valve B 6 When the required operating pres sure has built up close fill valve C ...

Page 49: ...t chapter Note For function and sequence of the venting program see page 162 4 Check the system pressure 5 Open the gas shut off valve Activating the venting function Service menu 1 Press OK and å simultaneously for approx 4 s 2 Service functions 3 Venting Venting function is enabled 4 Ending venting function Press OK or ä Commissioning inspection maintenance Further details regarding the individu...

Page 50: ...phon with water and refit 6 Check that the condensate pipe is connected correctly to the siphon and heat exchanger Note Route the drain hose without any bends and with a constant fall 7 Refit cover panel 8 Secure control unit back into the operating position Commissioning inspection maintenance Further details regarding the individual steps cont 5773 238 GB ...

Page 51: ...MPa Permissible operating pressure 6 bar 0 6 MPa Please note To prevent appliance dam age only use Tyfocor LS Never fill with water 3 Close ball valve in fill valve A 4 Open the air vent valve at the solar collector 5 Start the solar circuit pump via the actuator test see page 123 6 Let the solar circuit pump run until the solar circuit is fully vented If the sys tem pressure is below 1 7 bar 0 17...

Page 52: ... optimum combustion in accordance with the prevailing gas qual ity For operation with natural gas no adjustment is therefore required across the entire Wobbe index range The boiler can be operated in the Wobbe index range 9 5 to 15 2 kWh m3 34 2 to 54 7 MJ m3 For operation with LPG the burner must be converted see Gas type conversion on page 53 1 Determine the gas type and Wobbe index by asking yo...

Page 53: ... End service functions 4 Open the gas shut off valve 5 Affix label G31 supplied with the technical documentation adjacent to the type plate on the cover panel Checking the static and supply pressure Danger CO build up as a result of incor rect burner adjustment can have serious health implications Carry out a CO test before and after work on gas appliances Operation with LPG Flush the LPG tank twi...

Page 54: ...eset the burner 6 Check the supply flow pressure Set value Natural gas 20 mbar 2 0 kPa LPG 50 mbar 5 0 kPa Note Use a suitable measuring device with a resolution of at least 0 1 mbar 0 01 kPa to check the supply pres sure 7 Record the actual value in the report on page 193 Take action as shown in the following table 8 Shut down the boiler close the gas shut off valve remove the pressure gauge and ...

Page 55: ...harge pressure to 20 mbar 2 0 kPa for natural gas or 50 mbar 5 0 kPa for LPG Notify your gas supply utility or LPG supplier Function sequence and possible faults Display Action Control unit is sues a heat de mand No Increase set value and ensure heat is drawn off Yes Fan starts No After approx 51 s fault F9 Check the fan fan connecting cables power at the fan and fan control Yes Ignition No Fault ...

Page 56: ... the ionisa tion electrode ad justment and the gas line for air locks Yes Burner in opera tion No Stops below the set boiler water temperature and restarts immedi ately Check the flue sys tem for tightness flue gas recircula tion check the gas flow pressure Commissioning inspection maintenance Further details regarding the individual steps cont 5773 238 GB ...

Page 57: ...lts see page 124 Setting the max heating output The maximum output for heating oper ation can be limited The limit is set via the modulation range The max adjust able output is limited upwards by the boiler coding card Service menu 1 Press OK and å simultaneously for approx 4 s 2 Service functions 3 Max output 4 Change Select Yes A value is shown on the display e g 85 In the delivered condition th...

Page 58: ...ss test during the commissioning of your system For this it would be sufficient to check the CO2 or O2 concentration in the combustion air at the annular gap of the balanced flue pipe The flue pipe is deemed to be gas tight if the CO2 concentration in the combus tion air is no higher than 0 2 or the O2 concentration is at least 20 6 If actual CO2 values are higher or O2 val ues are lower then pres...

Page 59: ...e cables from fan motor A gas train B ignition and ionisation electrode C ignition unit D and earth tab E 4 Undo gas supply pipe fitting F 5 Undo four screws G and remove the burner Please note Prevent damage to the burner Never rest the burner on the burner gauze assembly Commissioning inspection maintenance Further details regarding the individual steps cont 5773 238 GB Service ...

Page 60: ...emove electrodes B 2 Undo two retaining clips C on ther mal insulation ring D and then remove thermal insulation ring D 3 Undo two Torx screws and remove burner gauze assembly E with gas ket F 4 Insert new burner gauze assembly E with new gasket F and secure Torque 5 0 Nm Commissioning inspection maintenance Further details regarding the individual steps cont 5773 238 GB ...

Page 61: ...hem as required Tighten the elec trode fixing screws with 4 5 Nm Cleaning the heating surfaces Please note There should be no scratches or other damage on the heat exchanger surface that comes into contact with hot gases This could lead to corrosion damage Never use brushes to clean the heating surfaces Brushing can cause existing deposits to get stuck in the coil gaps Note Discolouration of the h...

Page 62: ...ning the siphon A B C Flue gas cascade Clean the siphon in the flue gas header as well 1 Check at the siphon that the conden sate can drain freely 2 Remove retaining clip A 3 Pull filler pipe B upwards 4 Remove trap C downwards 5 Remove the condensate hose from trap C 6 Clean the siphon 7 Fill siphon with water and reassemble with retaining clip A Commissioning inspection maintenance Further detai...

Page 63: ...he burner G B D C E 4x F F A 1 Install the burner and tighten screws G diagonally with 8 5 Nm 2 Fit gas supply pipe F with a new gasket 3 Check the gas connections for tight ness Danger Escaping gas leads to a risk of explosion Check all fittings for gas tight ness Commissioning inspection maintenance Further details regarding the individual steps cont 5773 238 GB Service ...

Page 64: ...ode C ignition unit D and earth tab E Checking the anode connection Check that the earth cable is connected to the magnesium anode 1 2 A Magnesium anode B Earth cable Commissioning inspection maintenance Further details regarding the individual steps cont 5773 238 GB ...

Page 65: ... earth current with an anode tester 1 Remove cover A 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 anode is OK If the current measures 0 3 mA or if there is no current at all inspect the anode visually see page 68 Commissioning inspection maintenance Further details regarding the individual steps cont 5773...

Page 66: ...valve from lever position A to lever position B or C as required Lever position B To drain the heating system but not the cylinder via the cold water connection Lever position C To drain the heating system and the cylinder via the hot water connection Cold water connection remains filled Commissioning inspection maintenance Further details regarding the individual steps cont 5773 238 GB ...

Page 67: ...d 2 1 Drain the primary store 2 Remove flange cover A 3 Disconnect the primary store from the pipework to prevent contamination from entering the pipe system 4 Remove loose deposits with a high pressure cleaner Please note When cleaning the inside only use plastic cleaning uten sils Commissioning inspection maintenance Further details regarding the individual steps cont 5773 238 GB Service ...

Page 68: ...ing Checking and replacing the magnesium anode if required Check the magnesium anode If the anode has degraded to between 10 and 15 mm Ø we recommend replacing the magnesium anode Re assembling and filling the primary store 2 1 Reconnect the primary store to the pipework 2 Insert new gasket A underneath flange cover B Commissioning inspection maintenance Further details regarding the individual st...

Page 69: ...ed diaphragm expansion vessel is adequate for the system water volume GB only Note Carry out this test on a cold system 1 Drain the system until the pressure gauge shows 0 2 If the diaphragm expansion vessel pre charge pressure is lower than the static system pressure Top up with nitrogen at connection A until the pre charge pressure is 0 1 to 0 2 bar 10 to 20 kPa higher than the static system pre...

Page 70: ... bar 0 02 MPa 5 Turn operating lever of valve A back to the left position and open the on site shut off valve in the cold water line Checking all gas equipment for tightness at operating pressure Danger Escaping gas leads to a risk of explosion Check all gas equipment for tight ness Note Only use suitable and approved leak detection agents EN 14291 and devi ces for the tightness test Leak detectio...

Page 71: ...ent must be between 4 0 and 7 6 If the actual CO2 or O2 values lie outside their respective ranges proceed as fol lows Check the balanced flue system for tightness see page 58 Check the ionisation electrode and connecting cable see page 61 Note During commissioning the combustion controller carries out an automatic cali bration Only test the emissions approx 30 s after the burner has started 1 Con...

Page 72: ...ull load OFF Then Full load ON appears and the burner operates at its upper heating output 5 Ending output selection Press ä Matching the control unit to the heating system The control unit must be adjusted subject to the system equipment level To do this select the relevant system scheme see the following diagrams Set the codes in conjunction with the accessories fitted Accessories installation a...

Page 73: ...mixer A1 wP Solar collectors wQ Collector temperature sensor Function system components Code Adjust Group Operation with LPG 82 1 General System with DHW circulation pump DHW circulation pump connected at internal exten sion H1 or H2 Commissioning inspection maintenance Further details regarding the individual steps cont 5773 238 GB Service ...

Page 74: ... circuit with mixer M2 8 Low loss header 9 Flow temperature sensor low loss header wP Solar collectors wQ Collector temperature sensor Function system components Code Adjust Group Operation with LPG 82 1 General System with only one heating circuit with mixer with extension kit for mixer with DHW heating 00 4 General System with DHW circulation pump DHW circulation pump connected at internal exten...

Page 75: ...ct the maximum temperature of underfloor heating systems 6 Flow temperature sensor M2 7 Heating circuit pump M2 8 Extension kit for one heating circuit with mixer M2 wP Solar collectors wQ Collector temperature sensor Note The flow rate of the heating circuit with out mixer must be at least 30 greater than the flow rate of the heating circuit with mixer Commissioning inspection maintenance Further...

Page 76: ...ting circuit with mixer M2 and system separation 1 2 3 4 5 7 6 9 M 8 wP wQ 1 Vitodens 242 F 2 Outside temperature sensor 3 Heating circuit without mixer A1 4 Heating circuit with mixer M2 5 Temperature limiter to restrict the maximum temperature of underfloor heating systems 6 Flow temperature sensor M2 7 Heating circuit pump M2 8 Extension kit for one heating circuit with mixer M2 9 Heat exchange...

Page 77: ...ting circuit without mixer A1 one heating circuit with mixer M2 with extension kit one heating circuit with mixer M3 with extension kit and low loss header with without DHW heating M M 1 qT 8 7 6 5 9 qP qQ qW qE qR 2 wP wQ 4 3 1 Vitodens 242 F 2 Outside temperature sensor 3 Heating circuit without mixer A1 heating circuit 1 4 Heating circuit pump A1 5 Heating circuit with mixer M2 heat ing circuit...

Page 78: ...0 8 General System without DHW circulation pump Heating circuit pump A1 connected at internal exten sion H1 or H2 53 2 System with DHW circulation pump Heating circuit pump A1 connected at extension AM1 terminal A1 DHW circulation pump connected at extension AM1 terminal A2 or DHW circulation pump connected at internal exten sion H1 or H2 System with low loss header 04 0 Boiler Adjusting the heati...

Page 79: ... 3 4 90 80 70 60 50 40 30 0 5 10 15 20 5 10 2 0 2 2 Set room temperature in C 35 30 25 20 15 10 5 0 4 0 6 0 8 1 0 1 2 1 4 30 25 1 8 1 6 Slope setting ranges Underfloor heating systems 0 2 to 0 8 Low temperature heating systems 0 8 to 1 6 Selecting the set room temperature Individually adjustable for each heating circuit The heating curve is offset along the axis of the set room temperature With th...

Page 80: ...instructions Reduced set room temperature 20 14 5 90 20 D E A C B Example 2 Adjustment of the reduced set room temperature from 5 C to 14 C A Boiler water temperature or 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 reduced set room temper ature Operating instructions Changing the slope and level Indiv...

Page 81: ... LON communication module accessories must be plugged in Installation instructions LON communication module Note The data transfer via LON can take sev eral minutes Single boiler system with Vitotronic 200 H and Vitocom 200 example Set the LON subscriber numbers and further functions via code 2 see the fol lowing table Note In the same LON system the same sub scriber number must not be allocated t...

Page 82: ... tempera ture Set code 97 1 Viessmann system number Code 98 1 Viessmann system number Code 98 1 Viessmann system number Code 98 1 LON subscriber fault monitoring Code 9C 20 LON subscriber fault monitoring Code 9C 20 LON subscriber fault monitoring Code 9C 20 Carrying out a LON subscriber check The subscriber check is used to test communication with the system devices connected to the fault manager...

Page 83: ...ed fault indicator flashes and Service and appear on the programming unit display Acknowledging and resetting service Press OK to acknowledge a service message Note An acknowledged service message that was not reset reappears the following Monday After a service has been carried out resetting service 1 Press OK and å simultaneously for approx 4 s 2 Service functions 3 Service reset Note The select...

Page 84: ... instruct the user in operating the system This includes all components installed as accessories e g remote control units In addition the system installer must make the user aware of the required mainte nance work Commissioning inspection maintenance Further details regarding the individual steps cont 5773 238 GB ...

Page 85: ...idually named the selected name and HC1 HC2 or HC3 appears instead 1 Press OK and å simultaneously for approx 4 s 2 Coding level 1 3 Select the required coding address group General Boiler DHW Solar Heating circuit 1 2 3 All codes std device In this group all coding addresses from coding level 1 except coding addresses from the Solar group are displayed in ascending order 4 Select coding address 5...

Page 86: ...matically 4 One heating circuit with mixer M2 heating circuit 2 6 One heating circuit without mixer A1 heating circuit 1 One heating circuit with mixer M2 heating circuit 2 code is set automatically 8 One heating circuit with mixer M2 heating circuit 2 One heating circuit with mixer M3 heating circuit 3 10 One heating circuit without mixer A1 heating circuit 1 Two heating circuits with mixer M2 he...

Page 87: ...2 System with heating water buffer cylinder When there is a heat de mand the internal circula tion pump is only started if the burner is operational Circulation pump is switch ed off on expiry of run on time Subscriber no 77 1 LON subscriber number 77 2 to 77 99 LON subscriber number adjustable from 1 to 99 1 4 Boiler 5 Cascade 10 97 Vitotronic 200 H 98 Vitogate 99 Vitocom Detached house apartment...

Page 88: ...ture for external demand 9b 70 Set flow temperature for external demand 70 C 9b 0 to 9b 127 Set value adjustable from 0 to 127 C limited by boiler specific parameters Boiler Select group Boiler see page 85 Coding Coding in the delivered condition Possible change Burner service in 100 hours 21 0 No service interval hours run selected 21 1 to 21 100 The number of hours run before the burner should b...

Page 89: ...perature reheating suppression 67 40 For solar DHW heating Set DHW temperature 40 C DHW reheating is suppressed above the selected set temperature DHW heating by the boil er only if solar energy is not sufficient 67 0 to 67 95 Set DHW temperature ad justable from 0 to 95 C limited by boiler specific parameters Observe the setting of cod ing address 56 Enable DHW circulation pump 73 0 DHW circulati...

Page 90: ...le from 10 to 90 C Stagnation time reduction 0A 5 Temperature differential for stagnation time reduc tion reduction in the speed of the solar circuit pump to protect system components and heat transfer medium 5 K 0A 0 Stagnation time reduction is disabled 0A 1 to 0A 40 Temperature differential adjustable from 1 to 40 K Flow rate solar circuit 0F 70 The flow rate of the solar circuit at the maximum...

Page 91: ...ing cir cuit pump OFF 1 AT RTset 5 K 2 AT RTset 4 K 3 AT RTset 3 K 4 AT RTset 2 K 5 AT RTset 1 K 6 AT RTset 7 to AT RTset 1 K 15 AT RTset 9 K Coding in the delivered condition Possible change Extended economy function adjusted outside temperature A6 36 Extended economy mode disabled A6 5 to A6 35 Extended economy control enabled i e the burner and heating circuit pump stop and the mixer is closed ...

Page 92: ...time Heating circuit pump OFF if set value is modi fied by changing the op erating mode or changing the set room tempera ture A9 0 Without pump idle time A9 1 to A9 15 With pump idle time ad justable from 1 to 15 1 short idle time 15 long idle time Weather compensated room temperature hook up b0 0 Only for heating circuit with mixer and remote control Heating mode reduced mode Weather compen sated...

Page 93: ... 2 K 4 RTactual RTset 2 K RTactual RTset 1 K 5 RTactual RTset 1 K RTactual RTset 6 RTactual RTset RTactual RTset 1 K 7 RTactual RTset 1 K RTactual RTset 2 K 8 RTactual RTset 2 K RTactual RTset 3 K Coding in the delivered condition Possible change Min flow temperature heating circuit C5 20 Electronic minimum flow temperature limit 20 C only in operation with standard room tempera ture C5 1 to C5 12...

Page 94: ...erature Ext heating program changeover to heating circuit d8 0 With extension EA1 No operating program changeover d8 1 Operating program changeover via input DE1 d8 2 Operating program changeover via input DE2 d8 3 Operating program changeover via input DE3 Max pump speed in standard mode E6 Only for heating systems without a heating circuit with mixer Maximum speed of the in ternal variable speed...

Page 95: ... with mixer 6 different temperature time profiles can be selec ted for screed drying see page 163 F1 15 Constant flow temperature 20 C Party mode time limit F2 8 Time limit for party mode or external operating pro gram changeover via but ton 8 h 1 Note Observe settings of cod ing addresses 3A 3b and 3C in group Gen eral as well as d5 and d8 in group Heating circuit F2 0 No time limit 1 F2 1 to F2 ...

Page 96: ...imit for rais ing the set room tempera ture to the value selected for standard mode adjusta ble from 10 to 60 C Set flow temperature increase FA 20 Raising the set boiler wa ter or flow temperature by 20 when changing from operation with re duced room temperature to operation with stand ard room temperature See example on page 166 FA 0 to FA 50 Temperature rise adjusta ble from 0 to 50 Duration se...

Page 97: ...usly for approx 4 s 2 Press OK and simultaneously for approx 4 s 3 Coding level 2 4 Select the required coding address group General Boiler DHW Solar Heating circuit 1 2 3 All codes std device In this group all coding addresses from coding level 1 except coding addresses from the Solar group are displayed in ascending order 5 Select coding address 6 Select value according to the follow ing tables ...

Page 98: ...cuits with mixer M2 heating circuit 2 and M3 heating circuit 3 code is set automatically Coding in the delivered condition Possible change 11 9 No access to the coding addresses for the com bustion controller param eters 11 9 Access open to the coding addresses for the combus tion controller parameters 2A 0 Without wireless outside temperature sensor 2A 1 With wireless outside tem perature sensor ...

Page 99: ...al blocking Internal circulation pump function Coding address 3E in this group 3A 4 External blocking with fault message input Internal circulation pump function Coding address 3E in this group 3A 5 Fault message input 3A 6 Brief operation DHW cir culation pump pushbutton function DHW circulation pump run time adjustment Coding address 3d in this group 3b 0 Function input DE2 at ex tension EA1 No ...

Page 100: ...justment Coding address 3d 3C 0 Function input DE3 at ex tension EA1 No function 3C 1 Operating program changeover 3C 2 External demand with set flow temperature Set value setting Coding address 9b in this group Internal circulation pump function Coding address 3F in this group 3C 3 External blocking Internal circulation pump function Coding address 3E in this group 3C 4 External blocking with fau...

Page 101: ...ump stops 3F 2 At signal External de mand internal circulation pump starts 4b 0 Function input lH No function 4b 1 External demand 4b 2 External blocking 51 0 Internal circulation pump always starts when there is a heat demand 51 1 System with low loss head er When there is a heat de mand the internal circula tion pump is only started if the burner is operational Circulation pump is switch ed off ...

Page 102: ...ication module automatic recog nition 77 1 LON subscriber number 77 2 to 77 99 LON subscriber number adjustable from 1 to 99 1 4 Boiler 5 Cascade 10 97 Vitotronic 200 H 98 Vitogate 99 Vitocom 79 1 With LON communication module Control unit is fault man ager only for weather compensated control units 79 0 Control unit is not fault manager 7b 1 With LON communication module Control unit transmits th...

Page 103: ... not adjust 88 0 Temperature displayed in C Celsius 88 1 Temperature displayed in F Fahrenheit 8A 175 Do not adjust 8F 0 Operation enabled in standard menu and ex tended menu Note The respective code is only activated when you exit the service menu 8F 1 Operation blocked in standard menu and exten ded menu Emissions test mode can be enabled 8F 2 Operation enabled in standard menu and blocked in ex...

Page 104: ...in conjunction with monitoring several sys tems via Vitocom 300 98 1 to 98 5 System number adjustable from 1 to 5 99 0 Do not adjust 9A 0 Do not adjust 9b 70 Set flow temperature for external demand 70 C 9b 0 to 9b 127 Set flow temperature for external demand adjusta ble from 0 to 127 C limited by boiler specific parame ters 9C 20 With LON communication module Monitoring LON subscrib ers If there ...

Page 105: ...r cod ing card 06 Maximum limit of the boil er water temperature de faulted in C by the boiler coding card 06 20 to 06 127 Maximum limit adjustable within the ranges specified by the boiler 0d 0 Do not adjust 0E 0 Do not adjust 13 1 Do not adjust 14 1 Do not adjust 15 1 Do not adjust 21 0 No service interval hours run selected 21 1 to 21 100 The number of hours run before the burner should be serv...

Page 106: ...l program enabled 30 1 Internal circulation pump with variable speed au tomatic adjustment 30 0 Internal circulation pump without variable speed e g temporarily for serv ice 31 Set speed of the internal circulation pump when operated as boiler circuit pump in specified by the boiler coding card 31 0 to 31 100 Set speed adjustable from 0 to 100 38 0 Status burner control unit Operational no fault 3...

Page 107: ...g by the boil er only if solar energy is not sufficient 67 0 to 67 95 Set DHW temperature ad justable from 0 to 95 C limited by boiler specific parameters Observe the setting of cod ing address 56 6C 100 Set speed of internal cir culation pump during DHW heating 100 6C 0 to 6C 100 Set speed adjustable from 0 to 100 6F Max heating output for DHW heating in speci fied by the boiler coding card 6F 0 ...

Page 108: ...justable from 1 to 29 K 02 2 Solar circuit pump is speed controlled with PWM control 02 0 Solar circuit pump is not speed controlled e g tem porarily for service 02 1 Do not adjust 03 10 Temperature differential for the start of speed con trol 10 K 03 5 to 03 20 Temperature differential adjustable from 5 to 20 K 04 4 Controller amplification of the speed control 4 K 04 1 to 04 10 Controller amplif...

Page 109: ...time reduc tion reduction in the speed of the solar circuit pump to protect system components and heat transfer medium 5 K 0A 0 Stagnation time reduction is disabled 0A 1 to 0A 40 Temperature differential adjustable from 1 to 40 K 0b 0 Frost protection function for solar circuit switched off 0b 1 Frost protection function for solar circuit switched on not required with Viessmann heat transfer medi...

Page 110: ...arget temperature con trol switched on code 10 1 Set solar cylinder temper ature 50 C Temperature at which the solar heated water is to be stratified into the DHW cylinder 11 10 to 11 90 Set cylinder temperature adjustable from 10 to 90 C 12 10 Minimum collector tem perature minimum start temperature for the solar circuit pump 10 C 12 0 Minimum limit disabled 12 1 to 12 90 Minimum collector temper...

Page 111: ...alue below 1 C is selected there is a risk that pipes outside the thermal envelope of the house could freeze up Standby mode in particular should be taken into consideration e g during holidays Parameter Heating circuit pump Address A3 ON OFF 9 10 C 8 C 8 9 C 7 C 7 8 C 6 C 6 7 C 5 C 5 6 C 4 C 4 5 C 3 C 3 4 C 2 C 2 3 C 1 C 1 2 C 0 C 0 1 C 1 C 1 0 C 2 C 2 to 1 C to 3 C to 15 14 C 16 C Coding in the ...

Page 112: ...han the set room temperature RTset AT RTset 1 K A5 0 Without heating circuit pump logic function A5 1 to A5 15 With heating circuit pump logic function Heating cir cuit pump OFF see fol lowing table Parameter address A5 With heating circuit pump logic function Heating cir cuit pump OFF 1 AT RTset 5 K 2 AT RTset 4 K 3 AT RTset 3 K 4 AT RTset 2 K 5 AT RTset 1 K 6 AT RTset 7 to AT RTset 1 K 15 AT RTs...

Page 113: ...c Heating circuit pump also OFF If the mixer has been closed for longer than 20 min Heating circuit pump ON If the mixer changes to control function If there is a risk of frost A8 1 Heating circuit with mixer creates a demand for the internal circulation pump A8 0 Heating circuit with mixer creates no demand for the internal circulation pump A9 7 With pump idle time Heating circuit pump OFF if set...

Page 114: ...mpera ture dependent heating circuit pump logic func tion b5 1 to b5 8 Heating circuit pump logic function see the following table Parameter ad dress b5 With heating circuit pump logic function Heating circuit pump OFF Heating circuit pump ON 1 RTactual RTset 5 K RTactual RTset 4 K 2 RTactual RTset 4 K RTactual RTset 3 K 3 RTactual RTset 3 K RTactual RTset 2 K 4 RTactual RTset 2 K RTactual RTset 1...

Page 115: ...eral group Operating program switches to Constant central heating with re duced room tempera ture or Standby mode subject to the setting of the set reduced room temperature d5 1 The operating program switches to Constant op eration with standard room temperature d6 0 At signal External block ing heating circuit pump stays in control mode d6 1 At signal External block ing heating circuit pump stops...

Page 116: ...splay correction 0 1 K E2 51 to E2 99 Display correction 0 1 K to Display correction 4 9 K E5 0 Do not adjust E6 Only for heating systems without a heating circuit with mixer Maximum speed of the in ternal variable speed heating circuit pump in of the max speed in standard mode Value is specified by boiler specif ic parameters only for weather compensated control units E6 0 to E6 100 Maximum speed...

Page 117: ...tion with re duced room temperature only for weather com pensated control units E9 0 to E9 100 Speed adjustable from 0 to 100 of the maximum speed during operation with reduced room temper ature F1 0 Screed drying disabled F1 1 to F1 6 Only for heating circuit with mixer 6 different temperature time profiles can be selec ted for screed drying see page 163 F1 15 Constant flow temperature 20 C F2 8 ...

Page 118: ... temperature 14 C see example on page 165 F9 10 to F9 60 Temperature limit for rais ing the set room tempera ture to the value selected for standard mode adjusta ble from 10 to 60 C FA 20 Raising the set boiler wa ter or flow temperature by 20 when changing from operation with re duced room temperature to operation with stand ard room temperature See example on page 166 FA 0 to FA 50 Temperature r...

Page 119: ...tor test Coding level 1 Brief scan General Heating circuit 1 HC1 Heating circuit 2 HC2 DHW Solar Enter Vitocom PIN code Subscriber check Service PIN Heating circuit 3 HC3 Coding level 2 Fault history Service functions Terminate service Reset data Filling Venting Max output Service reset Multi boiler system Note Do not adjust menu item Multi boiler system This menu point changes the control unit to...

Page 120: ...aneously for approx 4 s 2 Diagnosis 3 Select required group e g Gen eral Resetting operating data Saved operating data e g hours run can be reset to 0 The value Adjusted outside temp is reset to the actual value 1 Press OK and å simultaneously for approx 4 s 2 Diagnosis 3 Reset data 4 Select required value e g Burner starts or All details Brief scan In the brief scan you can scan temper atures sof...

Page 121: ...entification ZE ID 3 0 Number of KM BUS subscribers Software version SM1 solar control module 4 Software version burner control unit Type Burner control unit Burner control unit ver sion 5 Internal details for calibration 0 Software version exten sion AM1 Software version ex tension EA1 6 0 0 0 0 0 0 7 LON Subnet address sys tem number LON Node address 0 8 LON SBVT configu ration LON Software vers...

Page 122: ...0 only for KM BUS circulation pumps Internal circulation pump Heating circuit pump heating cir cuit M2 Heating circuit pump heating circuit M3 Variable speed pump 0 none 1 Wilo 2 Grund fos Software version variable speed pump 0 no var iable speed pump Variable speed pump 0 none 1 Wilo 2 Grund fos Software version variable speed pump 0 no vari able speed pump Variable speed pump 0 none 1 Wilo 2 Gru...

Page 123: ...r HC2 Close Mixer close output enabled extension to heating circuit with mixer Heating circ pump HC3 ON Heating circuit pump output enabled extension to heating circuit with mixer Mixer HC3 Open Mixer open output enabled extension to heating circuit with mixer Mixer HC3 Close Mixer close output enabled extension to heating circuit with mixer Outp int exten H1 ON Output at internal extension enable...

Page 124: ...If an acknowledged fault is not rem edied the fault message will be re dis played the following day and the fault message facility restarted Calling up acknowledged faults Select Fault in the standard menu The current faults will be displayed in a list Calling up fault codes from the fault memory fault history The 10 most recent faults including resolved ones are saved and can be scanned Faults ar...

Page 125: ...de temperature sensor close to the wireless base station Log off outside temperature sensor then log on again Replace if required see Wireless base station installation and service instructions 20 Regulates without flow temperature sensor low loss header Short circuit sys tem flow tempera ture sensor Check low loss header sensor see page 140 28 Regulates without flow temperature sensor low loss he...

Page 126: ...r Check flow temperature sensor 50 No DHW heating Short circuit cylin der temperature sensor Check cylinder tempera ture sensor see page 140 51 No DHW heating Short circuit outlet temperature sen sor Check the outlet tempera ture sensor see page 140 58 No DHW heating Lead break cylin der temperature sensor Check cylinder tempera ture sensor see page 140 59 No DHW heating Lead break outlet temperat...

Page 127: ... page 140 9C No solar DHW heat ing Lead break cylin der temperature sensor tempera ture sensor connection on the solar control mod ule Check cylinder tempera ture sensor see page 140 9E Control mode No flow rate in so lar circuit or flow rate too low or temperature limiter has responded Check solar circuit Acknowledge fault mes sage see separate instal lation and service instruc tions 9F Control m...

Page 128: ...ontinues to be displayed A9 If a heating circuit with mixer is connec ted the burner oper ates at its lower heat ing output If only one heating circuit without mixer is connected the burner is blocked Internal circulation pump blocked Check the circulation pump b0 Burner blocked Short circuit flue gas temperature sensor Check flue gas tempera ture sensor b1 Control mode as per delivered condition ...

Page 129: ...ut remote control Communication er ror remote control Vitotrol heating cir cuit 1 without mix er Check connections cable and coding address A0 in group Heating cir cuit and check remote control configuration see page 168 For wireless remote con trols Check connections place remote control unit close to the boiler bd Control mode without remote control Communication er ror remote control Vitotrol h...

Page 130: ...eck connections Without extension EA1 Set code 5b 0 in the General group C2 Control mode Communication er ror solar control module Check solar control mod ule C3 Control mode Communication er ror extension AM1 Check connections Without extension AM1 Set code 32 0 in the General group C4 Control mode Communication er ror OpenTherm extension Check OpenTherm exten sion C5 Control mode max pump speed ...

Page 131: ...out room influence Short circuit room temperature sen sor heating circuit 2 with mixer Check room temperature sensor heating circuit 2 dC Control mode without room influence Short circuit room temperature sen sor heating circuit 3 with mixer Check room temperature sensor heating circuit 3 dd Control mode without room influence Lead break room temperature sen sor heating circuit 1 without mixer Che...

Page 132: ...it er has shut down Ensure adequate heat transfer Press reset button R E4 Burner blocked Fault 24 V supply voltage Replace control unit E5 Burner blocked Fault flame ampli fier Replace control unit E6 Burner blocked System pressure too low Top up with water E7 Burner in a fault state Ionisation current too low during cali bration Check ionisation elec trode Distance to burner gauze assembly see pa...

Page 133: ...si ble range during calibration devia tion from previous level too great Check flue system reme dy flue gas recirculation if required In open flue operation prevent high incidence of dust in the combustion air Press reset button R Following several unsuc cessful reset attempts re place the boiler coding card and press reset but ton R Eb Burner in a fault state Repeated flame loss during calibra ti...

Page 134: ... Check ionisation elec trode and connecting ca ble Check ignition Connecting leads to ig nition module and igni tion electrode Ignition electrode gap and contamination see page 61 Check condensate drain Press reset button R EF Burner in a fault state Flame is lost imme diately after it has formed during the safety time Check gas supply gas pressure and gas flow switch Check balanced flue sys tem f...

Page 135: ... or lead break water pres sure sensor Check the water pressure sensor and the connect ing cable F8 Burner in a fault state Fuel valve closes too late Check gas train Check both control paths Press reset button R F9 Burner in a fault state Fan speed too low during burner start Check fan fan connecting cables and power supply check fan control Press reset button R FA Burner in a fault state Fan not ...

Page 136: ...er blocked or in a fault state Boiler coding card or main PCB faulty or incorrect boiler coding card Press reset button R If the fault persists check the boiler coding card and replace boiler coding card or control unit if necessa ry FF Burner blocked or in a fault state Internal fault or re set button R blocked Start the appliance again Replace the control unit if the appliance will not re start ...

Page 137: ...137 Putting the control unit in maintenance position If required for commissioning and serv icing the control unit can be put in a dif ferent position 4 3 1 2 Troubleshooting Repair 5773 238 GB Service ...

Page 138: ...water side A 1 Close the shut off valves on the heat ing water side 2 Route hose at drain valve A into a suitable container or drain outlet 3 Open drain valve A and drain the boiler as much as required Troubleshooting Repair cont 5773 238 GB ...

Page 139: ... resistance of the outside temperature sensor across terminals X3 1 and X3 2 on the disconnec ted plug and compare it with the curve 3 Where actual values deviate severely from the curve values disconnect the wires at the sensor and repeat the test on the sensor itself 4 Depending on the result replace the lead or the outside temperature sen sor Troubleshooting Repair cont 5773 238 GB Service ...

Page 140: ...140 Checking the boiler temperature sensor cylinder temperature sensor or low loss header flow temperature sensor X3 5 A Troubleshooting Repair cont 5773 238 GB ...

Page 141: ... the control unit and check the resistance across terminals X3 4 and X3 5 2 Check the sensor resistance and compare it with the curve 3 In the case of severe deviation replace the sensor Danger The boiler water temperature sensor is immersed in the heating water risk of scald ing Drain the boiler on the heating water side before replacing the sensor Checking the collector temperature sensor or cyl...

Page 142: ...ure sensor sen sor type NTC 10 kΩ 1 Cylinder temperature sensor Remove plug from solar control module A and check the resist ance Collector temperature sensor Disconnect the lead from terminal box B and check the resistance 2 Compare the sensor resistance with the curve 3 In the case of severe deviation replace the sensor Troubleshooting Repair cont 5773 238 GB ...

Page 143: ...Ω 1 Pull leads from outlet temperature sensor A 2 Check the sensor resistance and compare it with the curve 3 In the case of severe deviation replace the sensor Danger The outlet temperature sen sor is immersed in the DHW risk of scalding Drain the DHW side of the boiler before replacing the sensor Troubleshooting Repair cont 5773 238 GB Service ...

Page 144: ...e plate heat exchanger C A B 1 Shut off and drain the boiler on the heating water and DHW sides 2 Release the side closures and pivot the control unit forward 3 Remove the siphon see page 50 4 Push thermal insulation panel A upwards and remove 5 Undo two screws B and remove plate heat exchanger C with insula tion through the front Troubleshooting Repair cont 5773 238 GB ...

Page 145: ...Temperature in C 0 4 0 6 0 8 2 4 6 8 20 Resistance in kΩ Sensor type NTC 10 kΩ 1 Pull leads from flue gas temperature sensor A 2 Check the sensor resistance and compare it with the curve 3 In the case of severe deviation replace the sensor Fault A3 during commissioning During commissioning the control unit checks whether the flue gas temperature sensor is correctly positioned If the flue gas tempe...

Page 146: ...control unit cannot be reset after a fault shutdown although the boiler water temperature is below approx 75 C check the following A 1 Pull the leads from temperature lim iter A 2 Check the continuity of the tempera ture limiter with a multimeter 3 Remove the faulty temperature lim iter 4 Coat the replacement temperature limiter with heat conducting paste and install it 5 After commissioning press...

Page 147: ...g the fuse F1 A 1 Switch off the power 2 Release the side closures and pivot the control unit down 3 Remove cover A 4 Check fuse F1 see connection and wiring diagram Troubleshooting Repair cont 5773 238 GB Service ...

Page 148: ...ant heating circuit Heating circuit Rotary se lector S1 set ting Heating circuit with mix er M2 Heating circuit 2 2 2 3 4 5 6 1 0 9 87 Heating circuit with mix er M3 Heating circuit 3 4 4 2 3 5 6 1 0 9 87 Checking the rotational direction of the mixer motor After being switched on the boiler imple ments a self test During this the mixer is opened and closed again Note The mixer motor can also be s...

Page 149: ... or the mixer insert is incorrectly fitted Mixer installation instructions Changing the rotational direction of the mixer motor if required gS BU 1 Remove the upper casing cover of the extension kit Danger An electric shock can be life threatening Before opening the boiler dis connect from the mains volt age e g at the fuse or the mains isolator 2 At plug gS swap the cores at termi nals and 3 Refi...

Page 150: ...low tempera ture sensor 2 Check the sensor resistance and compare it with the curve Replace the sensor in the case of severe deviation Checking the Vitotronic 200 H accessory The Vitotronic 200 H is connected to the control unit via the LON cable To test the connection carry out a subscriber check at the boiler control unit see page 82 Troubleshooting Repair cont 5773 238 GB ...

Page 151: ...level and regu lates the burner accordingly The electronic temperature limiter inside the burner control unit limits the boiler water temperature Heating the DHW primary store from cold The heating circuit pump is switched ON and the 3 way diverter valve will be changed over if the cylinder tempera ture sensor captures a temperature lower than the defaulted set value The cylinder primary pump is s...

Page 152: ...is regulated to the set temperature via the outlet temperature sensor The primary store continues to be heated up after the draw off process has termi nated until the set DHW temperature has been reached at the cylinder tem perature sensor The cylinder primary pump and the 3 way diverter valve remain on for a further 30 s DHW heating via solar collectors If a temperature differential is measured b...

Page 153: ...HW temperature via coding address 58 in group DHW and activat ing the fourth DHW phase for DHW heat ing Heating is boosted during the periods selected in this time phase Internal extensions accessories Internal extension H1 Function description Control unit cont 5773 238 GB Service ...

Page 154: ...in group General Central fault message code 53 0 DHW circulation pump code 53 1 only for weather compensated oper ation Heating circuit pump for heating circuit without mixer code 53 2 Circulation pump for cylinder heating code 53 3 An external gas isolation valve can be connected to connection gD Internal extension H2 Function description Internal extensions accessories cont 5773 238 GB ...

Page 155: ... in group General Central fault message code 53 0 DHW circulation pump code 53 1 only for weather compensated oper ation Heating circuit pump for heating circuit without mixer code 53 2 Circulation pump for cylinder heating code 53 3 An extractor fan can be switched off via connection aBJ when the burner starts Function description Internal extensions accessories cont 5773 238 GB Service ...

Page 156: ...156 Extension AM1 A1 Circulation pump A2 Circulation pump fÖ Power supply fÖ A Power supply for additional accessories aVG KM BUS Function description External extensions accessories 5773 238 GB ...

Page 157: ... DHW circulation pump Select the output functions by means of the codes on the boiler control unit Function assignment Function Code General group Output A1 Output A2 DHW circulation pump sK 33 0 34 0 delivered condi tion Heating circuit pump sÖ 33 1 delivered condi tion 34 1 Circulation pump for cylinder heating sA 33 2 34 2 Function description External extensions accessories cont 5773 238 GB Se...

Page 158: ...ital input 2 DE3 Digital input 3 0 10 V 0 10 V input fÖ Power supply fÖ A Power supply for additional accessories aBJ Central fault message feed pump DHW circulation pump potential free aVG KM BUS Function description External extensions accessories cont 5773 238 GB ...

Page 159: ...de d8 3 The effect of the operating program changeover is selected via coding address d5 in the Heating circuit group The duration of the changeover is set via coding address F2 in the Heating cir cuit group Effect of the external blocking func tion on the pumps The effect on the internal circulation pump is selected in coding address 3E in the General group The effect on the respective heating ci...

Page 160: ...l group at the boiler control unit Control functions External heating program changeover The External heating program change over function is connected via extension EA1 There are 3 inputs available at extension EA1 DE1 to DE3 The function is selected via the following coding addresses in the General group Heating program changeover Code Input DE1 3A 1 Input DE2 3b 1 Input DE3 3C 1 Assign the oper...

Page 161: ...ng program changeover F2 0 Duration of the operating program changeover 1 to 12 hours F2 1 to F2 12 The operating program changeover stays enabled for as long as the contact remains closed but at least as long as the duration selected in coding address F2 External blocking The External blocking and External blocking and fault message input func tions are connected via extension EA1 There are 3 inp...

Page 162: ...ut DE2 3b 2 Input DE3 3C 2 The effect on the internal circulation pump is selected in coding address 3F in group General The effect on the relevant heating circuit pump is selected in coding address d7 in group Heating circuit The minimum set boiler water tempera ture in case of external demand is selec ted in coding address 9b in group General Venting program During the venting program the circul...

Page 163: ...tion provided by the screed manufacturer When the screed drying function is acti vated the heating circuit pump in the heating circuit with mixer is switched on and the flow temperature is held in accordance with the selected profile On completion 30 days the heating circuit with mixer is regulated automatically via the set parameters Observe EN 1264 The report to be pro vided by the heating contr...

Page 164: ...30 Temperature profile 3 Code F1 3 Flow temperature C Days 50 40 30 20 10 1 5 10 15 20 25 30 Temperature profile 4 Code F1 4 Flow temperature C Days 50 40 30 20 10 1 5 10 15 20 25 30 Temperature profile 5 Code F1 5 Flow temperature C 1 5 10 15 20 25 30 Days 50 40 30 20 10 Function description Control functions cont 5773 238 GB ...

Page 165: ...ced room temperature the reduced set room tem perature can be automatically raised subject to the outside temperature The temperature is raised in accordance with the selected heating curve but no higher than the set standard room tempera ture The outside temperature limits for the start and end of temperature raising can be set in coding addresses F8 and F9 in the Heating circuit group Function d...

Page 166: ...re Reducing the heat up time During the transition from operation with reduced room temperature to operation with standard room temperature the boiler water or flow temperature will be raised in accordance with the selected heating curve The boiler water or flow temperature can be automatically increased The value and duration of the additional increase in the set boiler water or flow temperature ...

Page 167: ...h standard room temperature B Set boiler water or flow temperature in accordance with the selected heating curve C Set boiler water or flow temperature in accordance with coding address FA 50 C 20 60 C D Duration of operation with raised set boiler water or flow temperature in accordance with coding address Fb 60 min Function description Control functions cont 5773 238 GB Service ...

Page 168: ... bE Electronic combustion control unit The electronic combustion controller uti lises the physical correlation between the level of the ionisation current and the air ratio λ The maximum ionisation cur rent is achieved at an air ratio of 1 for all gas qualities The ionisation signal is evaluated by the combustion controller and the air ratio is adjusted to a value between λ 1 24 and 1 44 This rang...

Page 169: ...8 7 7 9 3 1 48 7 3 7 6 7 5 9 0 For optimum combustion control the system regularly carries out an auto matic self calibration also after a power failure shutdown For this the combus tion is briefly regulated to max ionisation current corresponding to air ratio λ 1 Automatic calibration is carried out shortly after the burner start and lasts approx 5 s During calibration higher than normal CO emiss...

Page 170: ...sor Outlet temperature sensor aA Ionisation electrode aG Flue gas temperature sensor dÖ Stepper motor for diverter valve fJ Thermal circuit breaker gF Ignition unit a Ö Fan motor a ÖA Fan motor control a Ö Modulation coil Designs Internal connection diagram 5773 238 GB ...

Page 171: ...171 A1 Main PCB A2 Power supply unit A3 Optolink A4 Burner control unit A5 Programming unit A6 Coding card Designs External connection diagram 5773 238 GB Service ...

Page 172: ...nsor Flow temperature sensor low loss header Cylinder temperature sensor plug on the cable harness sÖ Internal circulation pump sK Cylinder primary pump dG Gas solenoid valve fÖ Power supply lH Power supply for SM1 solar con trol module accessories and Vitotrol 100 a Ö Fan motor a ÖA Fan motor control aYA Gas pressure switch aVG KM BUS Designs External connection diagram cont 5773 238 GB ...

Page 173: ... BUS from the control unit B Power supply from the control unit C Terminal box collector tempera ture sensor Cylinder temperature sensor Collector temperature sensor sF Solar circuit pump fÖ Power supply aVG KM BUS Designs Connection diagram solar control module 5773 238 GB Service ...

Page 174: ...ed Serial no see type plate A Assembly from this parts list Position number of the individual part within the assembly from this parts list Standard parts are available from your local dealer Parts lists Ordering individual parts 5773 238 GB ...

Page 175: ...175 B C D E F G A B A Type plate B Casing assembly C Hydraulic assembly with hydraulic block D Primary store assembly Parts lists Overview of the assemblies 5773 238 GB Service ...

Page 176: ...nel top 0003 Adjustable foot 0004 Control unit support 0005 Profiled seal 0006 Cover panel with profiled seal 0007 Toggle fastener 4 pce 0008 Side panel left 0009 Front panel bottom 0010 Retaining clip 0011 Top panel insert 0012 Top panel 0013 Location stud fixings 2 pce 0014 Logo Parts lists Overview of the assemblies cont 5773 238 GB ...

Page 177: ...177 0013 0013 0002 0013 0013 0014 0005 0009 0004 0014 0008 0001 0003 0005 0005 0006 0012 0011 0007 0013 Parts lists Casing cont 5773 238 GB Service ...

Page 178: ...Cartridge non return valve 0025 Shut off valve cold water cylin der 0026 Round sealing ring 8 x 2 5 pce 0027 Connection line DHW charging 0028 Shut off valve DHW cylinder 0029 Flow pipe 0030 Expansion vessel 0031 Connection pipe cold water 0032 Heating water return connection pipework 0033 Thermal circuit breaker 0034 Hose 10 x 1 5 x 1500 0035 Pressure gauge 0036 Safety valve 0037 Connection pipe ...

Page 179: ...047 0042 0049 0049 0048 0041 0007 0042 0046 0042 0007 0015 0042 0046 0002 0041 0047 0004 0007 0027 0041 0013 0028 0045 0041 0042 0021 0046 0007 0015 0023 0024 0031 0002 0047 0044 0016 0044 0041 0025 0012 0012 0012 0011 0004 0014 0014 0010 0015 0038 0040 0041 0012 0009 0044 0016 0044 0012 0012 0017 0041 0035 0006 0047 0008 0009 0043 0005 0033 0029 0003 0047 0002 0036 0008 0012 0030 0020 0005 0046 P...

Page 180: ...retaining bracket 0008 Plate heat exchanger insulation board 0009 Plate heat exchanger insulation shell 0010 Overflow pipe 0011 Flow unit 0012 Valve insert 0013 Overflow valve 0014 O ring 17 86 x 2 62 5 pce 0015 Gasket A 17 x 24 x 2 5 pce 0016 O ring 9 6 x 2 4 5 pce 0017 Temperature sensor 0018 Plate heat exchanger Parts lists Hydraulics cont 5773 238 GB ...

Page 181: ...0010 0015 0013 0001 0016 0005 0005 0003 0007 0016 0003 0005 0011 0012 0002 0018 0009 0008 0016 0003 0016 Cylinder module 0001 Primary store 0002 Pipe clip Ø 18 0003 Sleeve G 1 0004 Pipe clip Ø 18 1 5 0005 Drip pan 0006 Hose 12 x 3 l 1300 Parts lists Hydraulics cont 5773 238 GB Service ...

Page 182: ... elbow 0015 Connection piece solar filling de vice 0016 Drain pipe solar safety valve 0017 O ring 17 86 x 2 62 5 pce 0018 Pipe connector 0019 Connection pipe solar flow 0020 Connection pipe central draw off 0021 Connection pipe solar circuit pump 0022 Gasket A 11 5 x 18 5 x 2 5 pce 0023 Gasket A 17 x 24 x 2 5 pce 0024 Gasket 23 x 30 x 2 5 pce 0025 Gasket A 23 x 30 x 2 5 pce 0026 Cap G 3 4 0027 Gas...

Page 183: ...7 0023 0024 0023 0024 0023 0014 0013 0029 0019 0027 0028 0022 0004 0016 0002 0006 0005 0024 0007 0023 0015 0023 0009 0023 0021 0018 0024 0010 0024 0024 0008 0012 0002 0004 0020 0023 0026 0023 0024 0003 0024 0002 0001 Parts lists Cylinder module cont 5773 238 GB Service ...

Page 184: ...002 Sensor retainer 0003 Magnesium anode 0004 Gasket 0005 Flange with gasket 0006 Cover 0007 Gasket 23 x 30 x 2 5 pce 0008 Sleeve 0009 Flange insulation 0010 Cylinder temperature sensor NTC 10kΩ Parts lists Cylinder module cont 5773 238 GB ...

Page 185: ...185 0010 0004 0001 0003 0004 0005 0009 0006 0007 0008 0007 0002 Parts lists Cylinder module cont 5773 238 GB Service ...

Page 186: ...25 5 pce 0010 Condensate collector 0011 Profile hose heating return 0012 Pipe clip Ø 18 1 5 0013 Gas pipe 0014 Diaphragm grommet 5 pce 0015 Gasket A 17 x 24 x 2 5 pce 0016 Condensate hose 0017 O rings 35 4 x 3 59 5 pce 0018 Condensate hose 0019 Condensate hose 0020 Condensate hose 0021 Spring clip condensate drain 0022 Siphon 0023 O ring 63 x 2 62 5 pce 0024 Heating water return connection elbow P...

Page 187: ...3 0003 0004 0023 0009 0006 0007 0007 0005 0008 0004 0003 0001 0009 0011 0009 0024 0016 0009 0010 0009 0009 0009 0019 0018 0017 0021 0022 0021 0017 0016 0020 0013 0015 0014 0012 0012 0014 0023 0015 Parts lists Heat cell cont 5773 238 GB Service ...

Page 188: ...g part 0007 Gasket burner door flange wear ing part 0008 Radial fan 0009 Gas train 0010 Burner door 0011 Ignition unit 0012 Gasket ionisation electrode 5 pce 0013 Gasket ignition electrode 5 pce 0014 Blade terminal 10 pce 0015 Mixture restrictor 0016 Gas nozzle 13 kW 19 kW 02 yellow 26 kW 04 grey 0017 Venturi extension 0018 Mounting plate thermal insula tion ring 2 pce 0019 Gasket DN 65 Parts list...

Page 189: ...010 0015 0004 0003 0002 0001 0019 0019 0018 0018 0018 0004 Control unit 0001 Control unit 0002 Control unit casing back panel 0003 Coding card 0004 Fuse 6 3 A slow 10 pce 0005 Fuse holder 0007 Programming unit for weather compensated mode 0008 LON module Parts lists Heat cell cont 5773 238 GB Service ...

Page 190: ... fixing 0015 Locking bolts left and right 0017 Wireless outside temperature sensor 0018 Outside temperature sensor hardwired 0019 KM BUS cable 145 0020 Internal extension H1 0021 Internal extension H2 0022 Connecting cable cylinder pri mary pump 0023 Power cable 0024 Adaptor lead collector tempera ture sensor Parts lists Control unit cont 5773 238 GB ...

Page 191: ...04 0015 0002 0013 0009 0005 0015 0019 0022 0023 0024 0010 0011 0012 0007 Miscellaneous 0001 Special grease 0002 Spray paint Vitowhite 0003 Touch up paint stick Vitowhite 0004 Installation and service instruc tions Parts lists Control unit cont 5773 238 GB Service ...

Page 192: ...192 0005 Operating instructions for con stant temperature mode 0006 Operating instructions for weath er compensated mode 0004 0002 0005 0006 0001 0003 Parts lists Miscellaneous cont 5773 238 GB ...

Page 193: ...k gas type Carbon dioxide content CO2 For natural gas At lower heating output by vol 7 5 9 5 At upper heating output by vol 7 5 9 5 For LPG At lower heating output by vol 8 8 11 1 At upper heating output by vol 8 8 11 1 Oxygen content O2 At lower heating output by vol 4 0 7 6 At upper heating output by vol 4 0 7 6 Carbon monoxide content CO At lower heating output ppm 1000 At upper heating output ...

Page 194: ... 2 9 4 3 2 17 2 2 9 4 3 2 17 2 4 7 8 0 2 29 3 Rated heat input range kW 3 1 4 5 2 17 9 3 1 4 5 2 17 9 4 9 8 3 2 30 5 Power consumption In the delivered condi tion W 39 53 68 Maximum W 157 160 209 Supply values relative to the max load Natural gas E m3 h 1 89 1 89 3 23 Natural gas LL m3 h 2 20 2 20 3 75 LPG P kg h 1 40 1 40 2 38 Product ID _ 0085CN0050 Note The connection values are only for doc um...

Page 195: ... 677 EN 61 000 3 2 EN 806 EN 61 000 3 3 EN 12897 In accordance with the following Directives this product is designated with _ 0085 97 23 EC 2006 95 EC 92 42 EEC 2009 142 EC 2004 108 EC This product meets the requirements of the Efficiency Directive 92 42 EEC for con densing boilers Allendorf 01 January 2013 Viessmann Werke GmbH Co KG Authorised signatory Manfred Sommer Certificates Declaration of...

Page 196: ...itodens 242 F type B2UA complies with the NOx limits specified by the 1st BImSchV Paragraph 6 Germany Allendorf 01 January 2013 Viessmann Werke GmbH Co KG Authorised signatory Manfred Sommer Certificates Manufacturer s certificate according to the 1st BImSchV Germany 5773 238 GB ...

Page 197: ...ol unit maintenance position 137 Converting the gas type 53 Cylinder cleaning 67 Cylinder temperature sensor 140 D Diaphragm expansion vessel 46 Draining the boiler Heating water side 138 E Electronic combustion controller 168 Extension AM1 156 EA1 158 Internal H1 153 Internal H2 154 Extension kit for heating circuit with mixer 148 External blocking 161 External demand 162 F Fault codes 125 Fault ...

Page 198: ...ure 165 Reduced set room temperature 80 Reducing the heat up output 165 Reducing the heat up time 166 Relay test 123 Remote control 168 Removing a fault display 124 Removing the front panels 45 Report 193 Rotational direction mixer motor Checking 148 Rotational direction of mixer motor Changing 149 S Safety chain 146 Screed drying 163 Screed drying function 163 Set room temperature selection 79 Se...

Page 199: ...199 5773 238 GB ...

Page 200: ... Hortonwood 30 Telford 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 5773 238 GB Subject to technical modifications ...

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Viessmann B2UA, Installation And Service Instructions Manual, Page: 74 / 200

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