Installation and Service
Contents
1. Turn rotary selector III 4 anti clock wise for less than 2 s and then clock wise back into the control range SERV TI and will appear on the display Filling has been acti vated This function will end automatically after 20 min or after the ON OFF switch has been turned off 5609 059 GB 5609 059 GB Commissioning inspection maintenance Further details regarding the individual steps cont Gas condensing boiler GB OA 1 Open shut off valves A and if fitted 2 Connect fill hose to valve and open valve 0 3 Fill heating system a removable fill ing loop with double check valve must be used in UK system pressure 0 8 to 1 2 bar 4 Close valve 0 1 Open shut off valves A and if fitted 2 Open valves and Note The cold water supply must be open 3 Fill the heating system system pres sure 0 8 to 1 2 bar 4 Close valves and 25 Commissioning inspection maintenance Further details regarding the individual steps cont Venting the boiler by flushing Gas condensing boiler 1 Connect the drain hose on shut off valve A to a drain 2 Close shut off valve 3 Open valves A and and flush at mains pressure until no sound of escaping air can be heard 4 First close valve A and then valve 5 Adjust operating pressure gt 0 8 bar with valve 6 Open shut off valve 62. 10 5 pce Clip 8 5 pce O ring gasket set 20 6 x 2 6 0011 0012 0013 0014 0015 0016 0017 0018 0019 0020 0021 0022 Air vent valve G Temperature sensor Round sealing ring 8 x 2 Moulded hose heating water flow Clip 18 5 pce O ring 17 x 4 5 pce Pressure gauge Clip 8 5 pce Hose connector adaptor Thermal circuit breaker Heating water flow connection elbow Hydraulics 5609 059 GB 5609 059 GB Hydraulic assembly cont 0002 0001 L 0003 0005 0007 0010 Nun 0012 00 0007 S gaa er E 0010 0007 0018 0014 L 0007 0007 amp 0019 S 30007 0007 gs 0015 amp 0016 0015 g 0019 0016 0015 O a pr Lar 0008 0008 0017 Parts lists 71 Parts lists System boiler hydraulic assembly 0001 0002 0004 0005 0007 0008 0009 0012 0014 72 Air vent valve O ring 34 x 3 5 pce Gasket set plate heat exchanger Safety valve 3 bar Special safety valve clip 5 pce Pump motor Bypass cartridge Clip 16 5 pce Stepper motor adaptor 0015 0016 0020 0021 0022 0023 0026 0031 Linear stepper motor Oval cap seal 5 pce Hydraulics O ring 19 8 x 3 6 5 pce O ring 16 x 3 5 pce Check valve Clip 18 5 pce O ring 17 x 4 5 pce 5609 059 GB 5609 059 GB Parts lists System boiler hydraulic assembly cont 0009 0022 0012 t 0022 0023 Y
3. Note During removal small amounts of water may trickle out and escape from the plate heat exchanger Check the DHW side for scaling and if required clean or replace the plate heat exchanger Checking the fuse 58 Switch the power OFF Open control unit casing see page 16 Check fuse F4 Check the heating water side for con tamination and if required clean or replace the plate heat exchanger Install in reverse order with new gas kets Note During installation ensure that fixing holes are aligned and gaskets seated correctly Install the plate heat exchanger the correct way round DN ALD 5609 059 GB 5609 059 GB Converting from LPG to natural gas Removing gas restrictor 7 EE N Pull cable from gas train N Remove union nut 8 3 Undo two screws and remove gas train 4 Remove gas restrictor from gas train 5 Mount gas train A with new gaskets and Please note n Tighten screws sufficiently to prevent the components being damaged and to ensure they function correctly 7 Start the boiler and check for leaks Gas type conversion 6 Remove or void gas type sticker on the top of the boiler next to the type plate Danger Escaping gas leads to a risk of explosion Check gas equipment for tightness 59 Gas type conversion Converting from LPG to natural gas
4. m In the case of DHW cylinders from Viessmann Cylinder tem perature sensor m In the case of alternative DHW cylinders compliant with the G3 Directive Cylinder demand junction box for connection of a 230 V cyl inder temperature controller and a 2 way shut off valve Flue gas temperature sensor Circulation pump 230 V Gas solenoid valve Temperature limiter Fan motor 230 V Fan control Flow sensor 63 Parts lists Ordering parts The following information is required m Serial no see type plate A m Assembly from this parts list m Position number of the individual part within the assembly from this parts list 64 Obtain standard parts from your local supplier 5609 059 GB 5609 059 GB Parts lists Overview of the assemblies Type plate Control unit assembly Sheet metal parts assembly Heat cell assembly Hydraulic assembly Miscellaneous assembly 65 Parts lists Sheet metal parts assembly 0001 Front panel 0002 Profiled seal 0003 Logo 0004 Strain relief upper part 0002 0001 Ir 0002 66 0005 Air box floor 0006 Diaphragm grommets set 0007 Wall mounting bracket 0008 Control flap 0007 0005 7 0006 0004 5609 059 GB 5609 059 GB Heat cell assembly Parts lists 0001 Gasket DN 60 0009 Tee 00
5. cont Converting the gas type at the control unit 3 4 e im 3 4 Ze 5 1 RESET in PITT 5 0 3 in 1 0 ja Checking the CO content See page 34 60 1 2 Turn ON OFF switch ON Turn both rotary selectors J and 3M simultaneously into their respective central positions SERV appears on the display Turn rotary selector I fully anti clockwise within 2 s The set value and flash on the display Adjust the control unit to natural gas or LPG by turning rotary selector a The display shows m 0 for operation with natural gas or m 1 for operation with LPG The set operating mode is saved when the value stops flashing and the control unit returns to standard mode 5609 059 GB 5609 059 GB Control unit Functions and operating conditions in weather compensated mode In weather compensated mode the boiler water temperature is regulated subject to the outside temperature Heating curve of weather compensated control unit 90 40 wo oO Boiler water or flow temperature in C gt N Oo oO 0 20 15 10 5 0 5 10 15 20 Outside temperature in C Setting of rotary selector IT Frost protection function becomes active 1 at outside temperatures of lt 5 C The 2 burner is switched on and the boiler water temperature is held at 20 C OOG00006 3 4 Delivered conditi
6. standards m Gas Safety Installation amp Use Regu lations the appropriate Building Regulation either the Building regulations the Building Regulation Scotland Building Regulations Northern Ire land the Water Fittings Regulation or Water Bylaws in Scotland the current I E E Wiring Regula tions If you smell gas A Danger Escaping gas can lead to explo sions which may result in serious injury m Never smoke Prevent naked flames and sparks Never switch lights or electrical appli ances ON or OFF m Close the gas shut off valve m Open windows and doors m Remove all people from the danger zone m Notify your gas or electricity supplier from outside the build ing m Shut off the electricity supply to the building from a safe place outside the building 5609 059 GB 5609 059 GB Safety instructions cont If you smell flue gas Safety instructions Ancillary components spare and wearing parts Danger Flue gas can lead to life threat ening poisoning n m Shut down the heating system m Ventilate the boiler room m Close all doors leading to the living space Working on the system m When using gas as fuel also close the main gas shut off valve and safeguard against unauthorised reopening m Isolate the system from the power sup ply and check that it is no longer live e g by removing a separate fuse or by means of a main isolator m Safeguard the syste
7. 7 Disconnect drain hose and put to one side 26 5609 059 GB 5609 059 GB Commissioning inspection maintenance Further details regarding the individual steps cont Gas condensing boiler 1 Connect the drain hose on shut off valve A to a drain 2 Close shut off valve 8 3 Open valves A and and flush at mains pressure until no sound of escaping air can be heard 4 First close valve A and then valves and 5 Adjust operating pressure gt 0 8 bar with valves and 6 Open shut off valve 7 Disconnect drain hose and put to one side Changing to operation with LPG In the delivered condition the boiler is Separate installation instruc set up for operation with natural gas For tions operation with LPG change the gas noz zle and convert the gas type in the con Changing from LPG to natural gas see trol unit page 59 27 Commissioning inspection maintenance Further details regarding the individual steps cont Checking the static and supply pressure Danger 4 Check the static pressure CO build up as a result of incor Set value max 57 5 mbar rect burner adjustment can have serious health implications 5 Start the boiler Carry out a CO test before and after work on gas appliances Note During commissioning the boiler can Operation with LPG enter a fault state because of airlocks Flush the LPG tank twice during com in th
8. Burner installation 4x a9 650 6095 40 5609 059 GB Commissioning inspection maintenance Further details regarding the individual steps cont 1 Fitthe burner and tighten four screws diagonally Please note Tighten screws sufficiently to prevent the components being damaged and to ensure they function correctly 2 Insert new gasket and tighten the fit tings on gas supply pipe 3 Plug the venturi extension into the fan 4 Fit electrical cables to fan motor gas valve E and ignition unit F 5 Reopen gas supply and switch on power supply 6 Check the gas connections for tight ness Danger Escaping gas leads to a risk of explosion Check all fittings for gas tight ness Please note a The use of leak detection spray can result in incorrect functions Leak detection spray must not reach electrical contacts or seal diaphragm openings on the gas valve Checking the diaphragm expansion vessel and system pressure Note The diaphragm expansion vessel can lose some charge pressure over a time in use When the boiler heats up the pressure gauge will indicate a higher pressure of 2 or 3 bar The safety valve too can respond and discharge excess pressure Check whether the installed diaphragm expansion vessel is adequate for the system water volume Carry out this test on a cold system 1 Drain the system or close the cap
9. Safety CHAIN eissu tainele 53 Safety valve mmrenvnrvrvvvrvrrnrrvrnnvnnnn 14 SIPMOM EE 15 39 Specficatibnaausnuamdanennive 78 Static Pressure irsinin ia 28 Supply PrESSU Erein 28 System pressure 25 81 Keyword index Keyword index cont T Temperature limiter Troubleshooting V Ventilation air pipe eee Venig eneren irae araea 82 WwW Wall Mounting oeiras 8 Weather compensated mode 61 5609 059 GB 89 690 6095 83 Applicability Serial No 7499423 7499424 7499427 7499428 Viessmann Werke GmbH amp Co KG D 35107 Allendorf Telephone 49 6452 70 0 Fax 49 6452 70 2780 www viessmann com 84 7499425 7499426 7499429 Viessmann Limited Hortonwood 30 Telford Shropshire TF1 7YP GB Telephone 44 1952 675000 Fax 44 1952 675040 E mail info uk viessmann com Subject to technical modifications 5609 059 GB
10. calculated performance verification is required if the max flue lengths in the table are excee ded Reducing the max heating output The max heating output can be reduced according to the system requirements 1 Turn ON OFF switch ON 30 5609 059 GB 5609 059 GB Commissioning inspection maintenance Further details regarding the individual steps cont D RESET Ns RESET a Test selected heating output by Turn rotary selector IT fully clock wise for less than 2 s and then back into the r h control range SERV and gt appear on the dis play Select the required max heating out put with rotary selector IT Bars for the selected heating output flash on the display m Position 1 1 bar lower heating output m Position 6 5 bars upper heating output measuring the gas throughput 31 Commissioning inspection maintenance Further details regarding the individual steps cont 5 Transfer selected heating output Turn rotary selector Jaa fully clock 3 4 2 e5 wise for less than 2 s and then back into the r h control range During the transfer the display 1 6 shows 0 6 Shut down the boiler ja Matching the circulation pump to the heating system Only for gas condensing combi boilers In the delivered condition the circulation pump in heating mode is set to stage 1 If necessary to suit the heating system the circ
11. details regarding the individual steps cont 6 Undo four screws F and remove the Please note burner n Prevent damage Never rest the burner on the burner gauze assembly Checking the burner gasket and burner gauze assembly Check burner gasket A for damageand Replace the burner gauze assembly if it replace if required is damaged 1 Remove electrode 8 3 Undo the two Torx screws and remove burner gauze assembly 0 2 Undo the two Torx screws and with gasket remove thermal insulating ring 37 Commissioning inspection maintenance Further details regarding the individual steps cont 4 Insert and secure new burner gauze 6 Fit electrode assembly D with new gasket E Please note Please note Tighten screws sufficiently 2 Tighten screws sufficiently to prevent the components to prevent the components being damaged and to ensure being damaged and to ensure they function correctly they function correctly 5 Refit thermal insulation ring Please note a Tighten screws sufficiently to prevent the components being damaged and to ensure they function correctly Checking and adjusting electrode 1 Check the electrode for wear and a contamination 2 Clean the electrode with a small L brush not with a wire brush or emery paper 3 Check the electrode gaps If the gaps are not as specified or the electrode is damaged replace and align the
12. 02 Boiler flue connection 0010 Gas pipe 0003 Boiler flue connection plug 0011 Gasket 17 x 24 x 2 set 0004 Flue gas gasket 0012 Burner 0005 Flue gas temperature sensor 0013 Thermal insulation block 0006 Heat exchanger 0014 Heat exchanger mounting set 0007 Condensate hose 0015 O ring gasket set 20 6 x 2 6 0008 Siphon 0016 Condensate hose 400 mm long 0001 0005 0002 0001 0003 eee 14 06 0004 0013 0014 0015 0007 0008 0009 0016 67 Parts lists Burner assembly 0001 0002 0003 0004 0005 0006 0007 0008 68 Burner gasket Insulation ring Cylinder burner gauze assembly Burner gauze assembly gasket Burner door lonisation electrode gasket Ignition and ionisation electrode Burner door flange gasket 0009 0010 0012 0013 0014 0015 0016 Radial fan Gas valve Venturi extension Gasket A 17 x 24 x 2 set Conversion kit G31 Gasket set G27 not GB Conversion kit G2 350 G27 not GB 5609 059 GB 5609 059 GB Burner assembly cont 0007 0006 0005 0004 0006 Parts lists 0012 69 Parts lists Hydraulic assembly 0001 0002 0003 0004 0005 0006 0007 0008 0009 0010 70 Diaphragm expansion vessel Support block diaphragm expan sion vessel Gasket A 10 x 15 x 1 5 set Connection line diaphragm expansion vessel Heating water return connection elbow Moulded hose heating water return Hose clip DN 25 Clip
13. 24 Troubleshooting Function sequence and possible faults isiin 44 Fault mess ges on th display ses td sseveseeant geastes avesetee atv cv aantd eda 45 Repais Picts cek volt eed ee vei est ce anden ene 49 Gas type conversion Converting from LPG to natural aS ariran rnnr senate enneeeeneneeeeeenaees 59 Control unit Functions and operating conditions in weather compensated mode 0 61 Designs Connection and wiring diagram 22 cccadii inci aaniatianiadcaidents 62 Parts lists Ordering DAMS 3 sais cctv costars vastecdnney net oasa rer anaes sepeats a e ar a TOEA ness 64 Overview of the assemblieS 0 0 2 0 isiin ninnaa E 65 Sheet metal parts ASSEMDI ccsececseeceseceedeedeesensecserescoepesesserseeensntessoesenesnerse 66 Heat cell assembly we 67 SP eee sne EE EE 68 Hydraulic assembly is smneremvanirimpan naor anaa peaa 70 System boiler hydraulic assembly rrarannrnnnrvvvrnnnnnvvrnnnnnrnnrrvvennrnnrrnnrrnnrsnertvvnnenn 72 C mibi hydraulic assembly irice etude cpeccaheeeavan etapa ast enetcccters sne amd randen 74 Control unit assembly 75 Miscellaneous assembly 77 SPecNcation k v innser karer aerea ire r e sengs ekke rab ariaa 78 5609 059 GB 5609 059 GB Index cont Certificates Index Declaration of CONFON asia samer kakene 80 Keyword index Product information Product information Vitodens 100 W type WB1C Preset for operation with natural gas Conversio
14. 4405 m a electrode together with a new gasket Tighten electrode fixing screws Please note a Tighten screws sufficiently to prevent the components being damaged and to ensure they function correctly 38 5609 059 GB 5609 059 GB Commissioning inspection maintenance Further details regarding the individual steps cont Cleaning the heat exchanger 1 Please note Scratches on parts that are in contact with flue gas can lead to corrosion Never use brushes to clean the heat exchanger Use a vacuum cleaner to remove res idues from heat exchanger A inside the combustion chamber 2 If required spray slightly acidic chloride free cleaning agents based on phosphoric acid onto heat exchanger A and let the solution soak in for at least 20 min 3 Thoroughly flush heat exchanger A with water Checking the condensate drain and cleaning the siphon 1 Pull siphon upwards out of the drain connection 2 Detach supply hose 8 from siphon 3 Clean siphon A 4 Reconnect supply hose 8 5 Refit siphon A to the drain connec tion 6 Fill siphon with water by pouring about 0 3 of water into the combus tion chamber 39 Commissioning inspection maintenance Further details regarding the individual steps cont freely and that the connections are 7 Check that condensate can drain tight
15. 5 mbar above 47 mbar Install a separate gas pressure governor upstream of the system and regulate the pre charge pressure to 20 mbar for natu ral gas or 37 mbar for LPG Notify your gas supply utility or LPG supplier Matching the burner output to the flue system To match the burner output to the sys tem s flue pipe length a correction factor can be set 1 Turn ON OFF switch ON 2 Turn both rotary selectors J and SIT simultaneously into their respective central positions SERV appears on the display 3 Refer to the following table for the correction factor required for the con nected flue system 29 Commissioning inspection maintenance Further details regarding the individual steps cont 4 Within 2 s turn rotary selector J a to the top left range The display shows III S and the selected correction factor flashes In the delivered condition factor 0 has been set 5 Within 15 s set rotary selector QT to the required correction fac tor 6 The set correction factor is saved when the value stops flashing and the control unit returns to standard mode Correction factor 1 2 3 4 5 6 Flue system Rated Max run length m heating output KW Open flue operation 60 mm 19 26 30 22 25 35 Balanced flue operation 19 16 19 60 100 mm coaxial 26 30 12 13 5 35 14 17 Observe max flue lengths A
16. 73 Parts lists Combi hydraulic assembly 0001 Air vent valve 0002 O ring 34 x 3 5 pce 0003 Plate heat exchanger 0004 Gasket set plate heat exchanger 0005 Safety valve 0006 Clip 8 5 pce 0007 Safety valve clip 5 pce 0008 Pump motor 0009 Bypass cartridge 0010 Flow sensor 0011 Clip 10 5 pce 0012 Clip 16 5 pce 0014 Stepper motor adaptor 74 0015 0016 0017 0018 0020 0021 0022 0023 0026 0027 0029 0031 Linear stepper motor Oval cap seal 5 pce Water volume controller Temperature sensor Hydraulics O ring 19 8 x 3 6 5 pce O ring 16 x 3 5 pce Check valve Clip 18 5 pce O ring 9 6 x 2 4 5 pce Expansion tank O ring 17 x 4 5 pce 5609 059 GB 5609 059 GB Parts lists Combi hydraulic assembly cont 0003 9920 0004 0001 0004 0006 0009 0010 0011 0017 0018 0021 0024 0026 0027 0009 0023 0022 0012 0012 Ke 0022 0022 ec gt 0023 Q 0012 0010 0007 0005 0002 0008 0026 Control unit assembly 0001 Cover wiring chamber 0003 Profiled seal 0002 Clip hinge 0004 Control unit 75 Parts lists Control unit assembly cont 0005 Cable harness X20 0008 Fan connecting cable 0006 Ignition cable with elbow plug 0009 Cable harness stepper motor 5 kQ 0010 Fuse 2 5 A slow 250 V 0007 Gas valve cable 76 5609 059 GB 5609 059 GB Miscellaneous assembly 0001 Spray paint Vitowhit
17. Installation and service VI EMAN Ri instructions for contractors Vitodens 100 W Type WB1C 6 5 to 35 0 kW Wall mounted gas condensing boiler Natural gas and LPG version Gas Council no 41 819 20 22 41 819 26 29 For applicability see the last page VITODENS 100 W 5609 059 GB 2 2012 Please keep safe Safety instructions Safety instructions Please follow these safety instructions closely to prevent accidents and mate rial losses Safety instructions explained Danger This symbol warns against the risk of injury Please note This symbol warns against the risk of material losses and envi ronmental pollution Note Details identified by the word Note con tain additional information Target group These instructions are exclusively designed for qualified personnel m Work on gas equipment must only be carried out by a qualified gas fitter m Work on electrical equipment must only be carried out by a qualified elec trician m The system must be commissioned by the system installer or a qualified per son authorised by the installer Regulations Observe the following when working on this system m all legal instructions regarding the pre vention of accidents m all legal instructions regarding envi ronmental protection m the Code of Practice of relevant trade associations m all current safety regulations as defined by DIN EN DVGW TRGI TRF VDE and all locally applicable
18. al gas During commissioning or maintenance the CO and CO have to be measured at the boiler flue adaptor test point to check the flue integrity Sub ject to the Wobbe index the CO content fluctuates between 7 4 and 10 5 CO of up to 500 ppm during ignition is acceptable We recommend measuring the O as the value is unmistakable regarding lambda air gas The O content fluctuates between 7 5 and 3 2 The CO CO ratio has to be less than 0 004 e 3 4 2 0 I RESET jm If the actual CO or O and CO values deviate from the stated range check the balanced flue systems for leaks If the flue installation is in order change the gas valve Note Operate the appliance with uncontami nated combustion air to prevent operat ing faults and damage 1 Connect a flue gas analyser at flue gas port on the boiler flue con nection 2 Start the boiler and check for leaks AN Danger Escaping gas leads to a risk of explosion Check gas equipment for tightness 3 Turn rotary selector J IT fully clockwise for less than 2 s and then back into the r h control range The display shows SERV gt and the boiler water temperature is displayed 5609 059 GB 5609 059 GB Commissioning inspection maintenance Further details regarding the individual steps cont 3 2 1 0 im 3 4 2 e 5 NN 0 RESET im 10 Adjust the upper heating output Turn rotary selector IT to the
19. aning the heat exchanger 39 COMMISSIONING iin iinn 24 Condensate sssini 14 Condensate drain 0006 14 39 Connection diagram 62 Connections Connections on the water side 11 Cylinder temperature sensor 52 D Declaration of Conformity 80 E Electrical connections 17 F Fault Code aan aent 45 Fault MESSAJ S cioinn 45 Filling function urasrrnrnnnnrrrervrnvennn 24 Filling the system 24 25 Flow limiter iuiussiimeismesmsesnite 56 Flue gas temperature sensot 55 Flue pipenn noain 15 Frostiimit sopes des 61 Frost protectio isisisi eseni 61 Function SeqUeEnCE iiris 44 E A T 58 G Gas COnNECtON mionnan 12 Gas supply pressure 28 Keyword index GaS WAIN amp ccacieisecectaesaatteeaet seceeceensectoces 28 Gas type conversion 59 E LP Gy ecndepapvenccczeascataes cetesheegesteensietes 27 m Natural 9aS oosorrrrrrnvrrrrrrrvvrnnnnnn 59 H Heating CUVE icipin giair 61 l IOA O Missean 38 Ignition electrodes 38 lonisation electrode eee 38 M Max Heating output ee 30 Oo Opening the control unit 16 Outlet temperature sensor 54 Output matching m Flue pipe length eee 29 Outside temperature sensor 49 P Plate heat exchanger 58 Power SUPPlynsanrdnsainiakatntnke 21 Pump Stag 2 t2 cccce cscepeeateesntasieleencas 32 R Reducing the heating output 30 R ST meet 48 S
20. control range on the right until the display shows 5 bars for the upper heating output Check the CO content for the upper heating output The CO content must be between 7 0 and 10 5 Adjust the lower heating output Turn rotary selector IT to the control range on the left until the dis play shows 1 bar for the lower heat ing output Check the CO content for lower heating output The CO content must be between approx 0 3 and 0 9 below the value for the upper heating output m If the CO content is within the given range continue with point 10 m If the CO content is outside the given range check the flue gas ventilation air system for tight ness remedy any leaks Replace gas train if required Test the CO content for upper and lower heating output again Shut down the boiler remove the flue gas analyser and cap flue gas aperture A 35 Commissioning inspection maintenance Further details regarding the individual steps cont 11 Turn both rotary selectors J a and SIT into their respective original positions Burner removal 4x 1 Switch the power OFF 4 Pull venturi extension 0 from the fan 2 Shut off the gas supply 5 Undo gas supply pipe fitting 3 Pull power cables from fan motor A gas valve 8 and electrodes 36 5609 059 GB 5609 059 GB Commissioning inspection maintenance Further
21. d compare it with the curve 55 Troubleshooting Repairs cont A 000 N Resistance in kQ o 90 A 00 10 30 50 70 90 110 Temperature in C 3 Replace the sensor in the case of severe deviation Replacing flow limiter gas condensing combi boiler 1 Drain the boiler from the DHW side 2 Pivot the control unit downwards Undo screws A Remove cap Remove faulty flow limiter Select new flow limiter corre sponding to boiler serial no see type plate and the following table Insert new flow limiter Fit new cap 8 provided Serial no Type plate Flow rate Colour l min 7499425 7499427 7499429 56 5609 059 GB 5609 059 GB Repairs cont Troubleshooting Checking or replacing the plate heat exchanger gas condensing combi boiler Heating water flow F Heating water return 1 Shut off and drain the boiler on the 4 Turn adaptor with servomotor A heating water and the DHW side 2 Flip down control unit 3 Push servomotor A slightly upwards HI Q D gt SAN Cold water H Domestic hot water 1 8 of a turn anti clockwise and remove 57 Troubleshooting Repairs cont 5 Remove two screws C from the plate heat exchanger and remove plate heat exchanger with gas kets
22. e 0002 Touch up paint stick Vitowhite 0003 Special grease LaF xJ 0004 Operating instructions Parts lists 0005 Installation and service instruc 0001 0002 0003 0004 0005 tions 77 Specification Specification Rated voltage 230 V Rated frequency 50 Hz Rated current 2 0 A Safety category IP rating IP X4 to EN 60529 Permissible ambient temperature m during operation 0 to 40 C m during storage and transport 20 to 65 C Gas boiler category Il 243p Temperature limiter setting 100 C fixed Backup fuse power supply 3A Rated heating output range in heating mode Tvy Tg 50 30 C kW 8 8 30 8 8 35 Ty Tr80 60 C kW 8 0 8 0 31 9 27 3 Rated heating output range 8 0 for DHW heating gas con KAN 30 0 80735 0 densing combi boiler Rated heat input range kW ER 8 2 32 7 Connection values relative to the max load with Natural gas E m h 3 0 3 5 LPGP kg h 2 2 2 6 Power consumption max Gas condensing boiler W 106 154 Gas condensing combi W 132 158 boiler Gas condensing combi boiler DHW heating Permiss operating pres bar 10 10 sure 1 The connection values are only for documentation purposes e g in the gas con tract application or to estimate a supplementary volumetric settings check Due to the factory settings the gas pressure must not be altered fro
23. e 49 18 Constant mode Lead break out Check the outside tem side temperature perature sensor and lead sensor see page 49 30 Burner blocked Short circuit boiler Check the boiler water water temperature temperature sensor see sensor page 51 38 Burner blocked Lead break boiler Check the boiler water water temperature temperature sensor see sensor page 51 50 No DHW heating Short circuit cylin Check the sensor see der temperature page 52 sensor 45 Troubleshooting Fault messages on the display cont Displayed System characteris Cause fault code tics 51 No DHW heating Short circuit outlet temperature sen sor Measures Check the sensor see page 54 52 Burner blocked Short circuit flow Check connections and sensor lead replace sensor if required 58 No DHW heating Lead break cylin Check the sensor see der temperature sensor page 52 59 No DHW heating Lead break outlet temperature sen sor Check the sensor see page 54 5A Burner blocked Lead break flow Check connections and sensor lead replace sensor if required AQ Control mode without Communication Check connections and OpenTherm device fault OpenTherm lead replace OpenTherm device device if required bO Burner blocked Short circuit flue Check the sensor see gas temperature sensor b8 Burner blocked Lead break flue gas temperature sensor E3 Burner in a fault Fault
24. e gas line After approx 5 s press missioning or replacement Purge the Reset to reset the burner tank and gas supply line thoroughly after flushing 6 Check the supply flow pressure Set value m Natural gas 20 mbar m LPG 37 mbar Note Use a suitable measuring device with a resolution of at least 0 1 mbar to check the supply pressure 7 Record the actual values in the report on page Take the action shown in the follow ing table 8 Shut down the boiler close the gas shut off valve remove the pressure gauge and close test nipple A with the screw 1 Close the gas shut off valve 2 Undo screw A inside test nipple IN on the gas train but do not remove it and connect the pressure gauge 3 Open the gas shut off valve 28 5609 059 GB 5609 059 GB Commissioning inspection maintenance Further details regarding the individual steps cont 9 Open the gas shut off valve and start the appliance Danger Gas escaping from the test nipple leads to a risk of explo sion Check gas tightness at test nipple Note The maximum pressure drop between the gas shut off valve and test nipple at the gas train is 0 5 mbar Action Supply pressure flow pressure for natural gas for LPG below 17 4 mbar below 25 mbar Do not start the boiler Notify your gas supply utility or LPG supplier 17 4 to 25 mbar 25 to 47 mbar Start the boiler above 2
25. earthing in the system can lead to serious injury from electrical cur rent if an electrical fault occurs Connect the appliance and pipe work to the equipotential bonding of the building in question A 21 c 2 ue s 7 Installation sequence Electrical connections cont Routing connecting cables and closing control unit Please note When routing and securing Connecting cables will be dam cables leads on site ensure that aged if they touch hot compo the maximum permissible tem nents peratures for these cables leads are not exceeded 22 5609 059 GB 5609 059 GB Commissioning inspection maintenance Steps commissioning inspection and maintenance For further information regarding the individual steps see the page indicated Commissioning steps Inspection steps a Maintenance steps Page on nem ne 1 Filling the heating system mmmrssnnrrrnnnnnonrrrrnnnrnntnnnnn 24 on en Es 2 Venting the boiler by flushing 0 eects 26 25 em me 3 Changing to operation with LPG 00 ee 27 on Eo e 4 Checking the static and supply pressure 28 5 Matching the burner output to the flue system 29 e 6 Reducing the max heating output 0000 0 30 e 7 Matching the circulation pump to the heating system 32 8 Checking the CO content 34 ee 9 Burner removal vrnrannrrnnvonvrnnnnnvvvnnnnnnvrnnnrrnnrnners
26. eck both control paths Press Reset see page 48 F9 FA Burner in a fault state Burner in a fault state Fan speed too low during burner start Fan not at stand still Check fan fan connecting cables and power supply check fan control Press Reset see page 48 Check fan fan connecting cables and fan control Press Reset see page 48 FC Burner blocked Electrical fan con trol control unit faulty Check fan connecting cable if required replace or replace control unit 47 Troubleshooting Fault messages on the display cont Displayed System characteris Cause fault code tics Fd Burner blocked Fault burner con trol unit Measures Check ignition electrodes and connecting cables Check whether a strong interference EMC field exists near the appliance Press Reset see page 48 Replace control unit if fault persists FF Burner blocked Fault burner con trol unit Check ignition electrodes and connecting cables Check whether a strong interference EMC field exists near the appliance Press Reset see page 48 Replace control unit if fault persists Press reset o 48 Turn rotary selector IIS to 4 RESET for less than 2 s then back into the control range 5609 059 GB 5609 059 GB Repairs Removing the front panel 1 Undo screws at the bottom of the boiler do not remove compl
27. etely Outside temperature sensor Troubleshooting 2 Remove front panel 1 Open the control unit casing See page 16 49 Troubleshooting Repairs cont Resistance in kQ A 00000 15 50 10 20 30 10 Temperature in C 50 2 Disconnect leads from outside tem perature sensor 3 Check the sensor resistance and compare it with the curve 4 Replace the sensor in the case of severe deviation 5609 059 GB 5609 059 GB Troubleshooting Repairs cont Boiler water temperature sensor 1 Pull the leads from boiler water tem perature sensor A and check the resistance 51 Troubleshooting Repairs cont 20 2 Check the sensor resistance and id compare it with the curve 3 In case of severe deviation drain 4 boiler on the heating water side and replace the sensor 2 3 Danger 5 1 The boiler water temperature 2 ae sensor is immersed in the 04 heating water risk of scald 10 30 50 70 90 110 ing Temperature in C Drain the boiler before replac ing the sensor Checking cylinder temperature sensor gas condensing boiler 1 Remove plugs 5 from the cable har ness and check the resistance 52 5609 059 GB 5609 059 GB Troubleshooting Repairs cont 20 2 Compare the sensor resistance with
28. g connections cont Connection safety valve and condensate drain m The condensate pipe is connected to the discharge pipe of the safety valve The condensate hose supplied meets the temperature requirements that are part of the CE certification m Connecting the condensate pipe inter nally to the domestic waste water sys tem either directly or via a tundish or washing machine trap is recommen ded 14 m f the condensate pipe is routed out side the building use a pipe of at least 30 mm and insulate it against frost Avoid long outdoor pipework Please note Frozen condensate pipes can result in faults and damage to the boiler Always insulate condensate pipes against frost m Observe local building regulations Connect the condensate pipe A with a constant fall and a pipe vent to the public sewage system Observe the local waste water regula tions Note Fill the siphon with water before com missioning 5609 059 GB 5609 059 GB Installation sequence Fitting the boiler and making connections cont Filling the siphon with water Fill the flue outlet with a minimum of 0 3 I of water Please note a At commissioning flue gas may be emitted from the condensate drain Fill the siphon with water before commissioning Flue and ventilation air connection Connect the balanced flue During installation and positioning of the flue system observe building regula
29. in safety state chain page 55 Check the sensor see page 55 Check the temperature limiter and connecting leads see page 53 Check the control unit and replace if required E5 Burner blocked Internal fault FO Burner blocked Internal fault Check the ionisation elec trode and cables Press Reset see page 48 Replace control unit F1 Burner in a fault Max flue gas tem state perature exceeded 46 Check heating system fill level Check circulation pump Vent the system Press Reset see page 48 5609 059 GB 5609 059 GB Fault messages on the display cont Displayed fault code F2 F3 System characteris tics Burner in a fault state Burner in a fault state Cause The temperature limiter has respon ded Flame signal is already present at burner start Troubleshooting Measures Check heating system fill level Check circulation pump Vent the system Check the temperature limiter and connecting leads see page 53 Press Reset see page 48 Check ionisation elec trode and connecting cable Press Reset see page 48 F4 Burner in a fault state No flame signal Check the ignition ionisa tion electrode and cables check the gas pressure check the gas train igni tion ignition module and condensate drain Press Reset see page 48 F8 Burner in a fault state Fuel valve closes too late Check gas train Ch
30. ion on connecting accessories For this connection observe the separate installation instructions provided with the accessories 17 Installation sequence Electrical connections cont Connection of room temperature controller and DHW cylinder with 230 V cyl inder temperature controller Junction box cylinder demand Jumper remove when making this connection Power supply 230 V 50 Hz See page 21 OE 18 Cylinder temperature controller 230 V Room thermostat 5609 059 GB 5609 059 GB Installation sequence Electrical connections cont Connection of room temperature controller with time switch and DHW cylinder with 2 way valve and 230 V cylinder temperature controller Junction box cylinder demand 2 way shut off valve Jumper remove when making this High limit safety cut out connection Time switch Power supply 230 V 50 Hz Room thermostat See page 21 Cylinder temperature controller 230 V 19 Installation Installation sequence Electrical connections cont Cable entry A Power cable remote control con necting cable LV leads sensor leads Outside temperature sensor accessory 1 Fit outside temperature sensor 2 Plug the lead supplied with the out side temperature sensor into slot Installation site X21 m North or north
31. m against unau thorised reconnection Please note a Electronic modules can be dam aged by electro static dis charges Touch earthed objects such as heating or water pipes to dis charge static loads Repair work Please note a Repairing components which ful fil a safety function can compro mise the safe operation of your heating system Replace faulty components only with original Viessmann spare parts Please note Spare and wearing parts which have not been tested together with the heating system can com promise its function Installing non authorised components and non approved modifications con version can compromise safety and may invalidate our warranty For replacements use only orig inal spare parts from Viessmann or those which are approved by Viessmann Index Index Installation instructions Product informati n aeeai rda ET re EEEN EEAS 6 Preparing for installation sroin a aa NE 7 Installation sequence Fitting the boiler and making connectionS rurannrrrrrrvvrrnervvvnnrnnnrrenrtveerersrvnnrrnnn 10 Opening the control unit casing miirserrrnnnvorinnvrnnrnnnvernnvnnvennnnenensnneernanenrnnnensnnnnenk 16 El ctrical connedtibnsususanane meandere a aa eia a 17 Service instructions Commissioning inspection maintenance Steps commissioning inspection and Maintenance 23 Further details regarding the individual steps ursnverrrvvrnnnrvvrnnnnrrrrrrvennerrrnnrennn
32. m these values Ref erence 15 C 1013 mbar 78 5609 059 GB 5609 059 GB Specification cont Rated heating output range in heating mode TylTg 50 30 C Ty Tp80 60 C Rated water volume at AT 35 K to EN 13203 Set flow rate max kW kW I min l min Specification 8 8 30 8 0 27 3 12 3 12 0 8 8 35 8 0 31 9 14 3 14 0 Product ID C 0085BT0029 79 Certificates Declaration of conformity Declaration of Conformity for the Vitodens 100 W We Viessmann Werke GmbH amp Co KG D 35107 Allendorf confirm as sole respon sible body that the product Vitodens 100 W complies with the following standards EN 297 EN 55 014 2 EN 483 EN 60 335 1 EN 625 EN 60 335 2 102 EN 677 EN 61 000 3 2 EN 806 EN 61 000 3 3 EN 12 897 EN 62 223 EN 55 014 1 In accordance with the following Directives this product is designated with C 0085 92 42 EEC 2006 95 EC 2004 108 EC 2009 142 EC This product complies with the requirements of the Efficiency Directive 92 42 EEC for condensing boilers Allendorf 1 January 2012 Viessmann Werke GmbH amp Co KG dhe Als Authorised signatory Manfred Sommer 80 5609 059 GB 5609 059 GB Keyword index B Boiler water temperature sensor 51 Burner gasket 37 Burner gauze assembly 37 Burner installation cce cee 40 Burner removal sssrinin 36 Cc Cleaning the combustion chamber 39 Cle
33. mand i Yes Fan starts V Yes Ignition i Yes Gas train opens V Yes lonisation current builds greater than 2 pA Symbol gt 44 Action No Increase set value and ensure heat is Display drawn off Check the fan fan connecting cables power at the fan and fan control After approx 1 min fault F9 No Fault F4 Check the ignition s module connec tion No Fault F4 Check the gas train control volt age 230 V check the gas supply pressure No Fault F4 Check the ionisa tion current check the electrode adjustment con densate drain and the gas line for air locks 5609 059 GB 5609 059 GB Troubleshooting Function sequence and possible faults cont i Yes Burner in opera tion No Stops below the set boiler water tem perature and Check the flue sys tem for tightness flue gas recircula restarts immedi ately tion check the gas flow pressure Fault messages on the display Faults are indicated by a flashing fault code with fault symbol 4 on the dis play For fault code explanations see the fol lowing table Displayed System characteris Cause Measures fault code tics 10 Constant mode Short circuit out Check the outside tem side temperature perature sensor and lead sensor see pag
34. n to LPG P requires a gas con version kit Conversion for other countries The Vitodens 100 W should generally only be delivered to those countries specified on the type plate For deliveries to alternative countries an approved contractor on his own initiative must arrange individual approval in accord ance with the law of the country in ques tion Product description The Vitodens 100 W is available as a gas condensing boiler for the connection of one DHW cylinder and as a gas con densing combi boiler with an integral plate heat exchanger for DHW heating For the connection of heating circuits and the DHW cylinder or the DHW line see from page 9 In the delivered condition the Vitodens 100 W is set up for operation with constant boiler water temperature By connecting an outside temperature sensor accessory the boiler can be operated in weather compensated mode The following are integrated one sealed unvented hydraulic system with 2 con nections for heating flow and return and 2 connections for cylinder heating gas condensing boiler or DHW heating gas condensing combi boiler These boilers are only intended for installation in sealed unvented heating systems Boilers for open vented heating systems are also available If the Vitodens 100 W is installed in an S plan or Y plan system the DHW primary connections are not used and must be capped off The following components are integra ted into the h
35. nsing boiler Cylinder return Gas condensing combi boiler Cold water Preparing for installation Preparing for installation cont Fitting the wall mounting bracket Vitodens installation template 5609 059 GB 5609 059 GB Preparing for installation Preparing for installation cont 1 Position the supplied installation tem plate on the wall 2 Mark out the rawl plug holes 3 Drill 10 mm holes and insert the rawl plugs supplied 4 Fit wall mounting bracket with screws supplied Fit installation aid or mounting frame Installation aid or mounting frame installation instructions Preparing the connections Please note n To prevent equipment damage install all pipework free of load and torque stresses 1 Prepare the water connections Flush the heating system 2 Prepare the gas connection 3 Prepare the electrical connections m Power cable NYM J 3 x 1 5 mm m Accessory cables NYM O 2 core min 0 5 mm lt fe amp D Installation sequence Fitting the boiler and making connections Removing the front panel and mounting the boiler 1 Undo screws at the bottom of the 3 Hook the boiler into the wall mounting boiler do not remove completely bracket 2 Remove front panel 5609 059 GB 5609 059 GB Installation sequence Fitting the boiler and making connections cont Making connections on the water side For fittings
36. on 5 6 Frost protection function Frost protection function is only possible when an outside temperature sensor is connected 61 Designs Connection and wiring diagram 123456 amp 12 54 35 j 2 09 Sem Z t SJ ipm a i i ji me H OND z Lp gt kom ai gi I 3 I Q 3 Ke Hang DOE p fl os Se n I I x I wo I E 7 i ONO ss Ge ee 7 Lola oy 5 ha I 1 ret Ee i i GND Ham gt Meo mano kat o wo I I N eis I a ne GND eee z i i m Si i i mlte L 7 TCN m x al rad LAE S Si s h O g L Stepper motor diverter valve Vitotrol 100 type UTA or on site Ignition ionisation room temperature controller switched 230 V input 62 5609 059 GB 5609 059 GB Connection and wiring diagram cont Aexo OG 00 OB Vitotrol 100 type RT or on site room temperature controller switched 230 V input Vitotrol 100 type UTDB or on site room temperature controller switched 230 V input Mains input 230 V 50 Hz Remote control OpenTherm device Outside temperature sensor accessory Time switch accessory Gas pressure switch acces sory PCB inside the control unit Electrical interface Boiler water temperature sensor Outlet temperature sensor gas condensing combi boiler 5 20 35 47 100 100 149 A Designs Gas condensing boiler
37. on the heating water Gas condensing boiler side and DHW side see separate installation instructions Da c 2 amp s 7 itil pel A Heating flow Gas condensing boiler Cylinder flow Gas condensing combi boiler Domestic hot water Gas connection Gas condensing boiler Cylinder return Gas condensing combi boiler Cold water Heating return 11 Installation sequence Fitting the boiler and making connections cont Gas condensing combi boiler Filling loop Gas connection EET e O 1 Connect gas shut off valve to con nection A 12 5609 059 GB 5609 059 GB Installation sequence Fitting the boiler and making connections cont 2 Carry out a tightness test Note For the tightness test use only suita ble and approved leak detection agents EN 14291 and devices Leak detection agents with unsuita ble constituents e g nitrites sul phides can lead to material dam age Remove residues of the leak detec tion agent after testing 6 3 Please note T 2 Excessive test pressure may 2 damage the boiler and the gas z valve Max test pressure 150 mbar Where higher pressure is required for tightness tests separate the boiler and the gas valves from the gas sup ply pipe undo the fitting 3 Purge the gas line 13 Installation sequence Fitting the boiler and makin
38. the curve 8 6 3 Replace the sensor in the case of 4 severe deviation g E 9 o O G1 w 0 8 8 0 6 X 0 4 10 30 50 70 90 110 Temperature in C Checking the temperature limiter If the burner control unit cannot be reset after a fault shutdown although the boiler water temperature is below approx 95 C check the temperature limiter 1 Pull the leads from temperature lim iter A 2 Check the continuity of the tempera ture limiter with a multimeter 3 Remove the faulty temperature lim iter 4 Install a new temperature limiter 5 Press Reset at the control unit see page 48 53 Troubleshooting Repairs cont Checking the outlet temperature sensor gas condensing combi boiler Resistance in kQ o 90 54 A 000 N A 00 10 30 50 70 90 110 Temperature in C Pull leads from outlet temperature sensor A Check the sensor resistance and compare it with the curve Replace the sensor in the case of severe deviation Note Water can leak when replacing the outlet temperature sensor Shut off the cold water supply Drain the DHW line and the plate heat exchanger DHW side 5609 059 GB 5609 059 GB Troubleshooting Repairs cont Checking the flue gas temperature sensor 1 Pull leads from flue gas temperature sensor A 2 Check the sensor resistance an
39. tions part L and BS 5440 Flue system installation instruc tions 15 c e amp a Installation sequence Opening the control unit casing Please note Electronic assemblies can be damaged by electrostatic dis charge Before beginning work touch earthed objects such as heating or water pipes to discharge static loads 16 5609 059 GB Installation sequence Electrical connections 35 20 1100 liner gt i Ip c 2 hy s 7 5609 059 GB Gas condensing boiler m In the case of Viessmann DHW cylinders Cylinder temperature sensor plug on the cable harness outside the control unit m In the case of alternative DHW cylinders compliant with the G3 Directive Cylinder demand junction box for connection of a cylinder tempera ture controller and a 2 way shut off valve m Without DHW cylinder For operation without a DHW cyl inder set rotary selector to Oo Only for weather compensated mode Outside temperature sensor acces sory 0000 OpenTherm device Connecting cable accessory Jumper Power supply 230 V 50 Hz See page 21 Vitotrol 100 or on site room temper ature controller 230 V switched input Remove jumper 0 when making this connection Separate installation instruc tions Informat
40. ulation pump can be set to stage 2 A oO N oO wo oO Residual head in mbar ow O O kPa 3 100 O 200 400 600 800 1000 1200 1400 Flow rate in l h A Gas condensing boiler 26 kW Gas condensing combi boiler Gas condensing combi boiler 26 kW pump stage 2 26 kW pump stage 1 0 Gas condensing boiler 35 kW Gas condensing boiler 30 kW Gas condensing combi boiler 30 Gas condensing combi boiler 30 and 35 kW pump stage 2 and 35 kW pump stage 1 Upper operational limit 32 5609 059 GB 5609 059 GB Commissioning inspection maintenance Further details regarding the individual steps cont pop Turn ON OFF switch ON Turn both rotary selectors and QT simultaneously into their respective central positions SERV appears on the display Within 2 s turn rotary selector II to the top right range II appears on the display and the set value flashes Adjust the control unit to stage 1 or stage 2 by turning rotary selector Jaa The display shows m 1 for operation with stage 1 or m 2 for operation with stage 2 The set operating mode is saved when the value stops flashing and the control unit returns to standard mode 33 Commissioning inspection maintenance Further details regarding the individual steps cont Checking the CO content The Vitodens 100 W is factory set for natur
41. valve on the diaphragm expansion vessel and reduce the pressure until the pressure gauge indicates 0 If the pre charge pressure of the dia phragm expansion vessel is lower than the static system pressure top up with nitrogen until the pre charge pressure is raised by 0 1 to 0 2 bar 3 Top up with water until the charge pressure of the cooled system is at least 1 0 bar and 0 1 to 0 2 bar higher than the pre charge pressure of the diaphragm expansion vessel Permiss operating pressure 3 bar 41 Commissioning inspection maintenance Further details regarding the individual steps cont Checking gas equipment for tightness at operating pressure Danger Please note Escaping gas leads to a risk of z The use of leak detection spray explosion can result in incorrect functions Check gas equipment for tight Leak detection spray must not ness reach electrical contacts or seal diaphragm openings on the gas valve Fitting the front panel 1 Hook the front panel into place 2 Tighten screws at the bottom 42 5609 059 GB 5609 059 GB Commissioning inspection maintenance Further details regarding the individual steps cont Instructing the system user The system installer must hand the oper ating instructions to the system user and instruct the user in the operation of the system 43 Troubleshooting Function sequence and possible faults Control unit issues a heat de
42. vvnnnnn 36 oe ee 10 Checking the burner gasket and burner gauze SSSembly utanom ea aE aia e EE SOES 37 a Es 11 Checking and adjusting electrode 00 38 om ne 12 Cleaning the heat exchanget 0 seeeteeeeees 39 on ne 13 Checking the condensate drain and cleaning the SIDON ae 39 on ne 14 Burner installation 000 ee 40 OF 0 15 Checking the diaphragm expansion vessel and system PIESSULe cc cece enere ee ceeceeeeceeeeteseesaeeeeeeeees 41 Checking all connections on the heating water side and DHW side for leaks Checking firm seating of electrical connections Checking gas equipment for tightness at operating POS SUNG oie che ced cx EE seie Vass Bac ectnes AE 42 Fitting the front panel rnenesssnsrnrrnnnonnnonrrnnnnnnrnntnnnnn 42 Instructing the system user rssnnnnnarnnonnrnrnnnnnrnnrn nen 43 23 Commissioning inspection maintenance Further details regarding the individual steps Filling the heating system Please note 2 Unsuitable fill water increases the level of deposits and corro sion and may lead to boiler dam age m Thoroughly flush the entire heating system prior to filling it m Only use fill water of potable quality 24 m Soften fill water harder than 300 ppm a An antifreeze additive suitable for heating systems can be added to the fill water Close the gas shut off valve Switch ON the power supply
43. westerly wall 2 to 2 5 m above ground level in multi 3 Connect the outside temperature storey buildings in the upper half of sensor to terminals 3 and 4 the second floor m Not above windows doors or ven tilation outlets m Not immediately below balconies or gutters m Never render over m Connection 2 core lead length max 35 m with a cross section of 1 5 mm 20 5609 059 GB 5609 059 GB Electrical connections cont Power supply Regulations and Directives Danger Incorrectly executed electrical installations can lead to injury from electrical current and result in equipment damage Connect the power supply and implement all safety measures e g RCD circuit in accordance with the following regulations m IEC 60364 4 41 m VDE regulations m Connection requirements specified by your local power supply utility Install an isolator in the power supply line that simultaneously isolates all non earthed conductors from the mains with at least 3 mm contact separation Installation sequence We additionally recommend installing an AC DC sensitive RCD RCD class B AAI for DC fault currents that can occur with energy efficient equipment Protect the power cable with an external fuse MCB 3 A to BS 1362 Danger Incorrect core allocation can result in serious injury and dam age to the appliance Take care not to interchange wires L1 and N Danger The absence of component
44. ydraulic system m Circulation pump m 3 way diverter valve m Safety valve m Diaphragm expansion vessel m Plate heat exchanger for DHW heating gas condensing combi boiler DHW heating with DHW cylinder If a Viessmann Vitocell is connected a cylinder temperature sensor will issue the heat demand accessory The cylin der temperature sensor is connected to the boiler control unit A 230 V cylinder temperature controller is not required If a different DHW cylinder is connected the cylinder temperature sensor acces sory may also be used on this cylinder Alternatively a 230 V cylinder tempera ture controller should be connected via the cylinder demand junction box part of the boiler standard delivery Connection of accessories Cylinder temperature sensor outside temperature sensor and time switch are connected to the control unit with low voltage 5609 059 GB 5609 059 GB Preparing for installation Preparing for installation Preparing the boiler installation Dimensions and connections A i ND I 350 400 oe 156 fe 8 den c amp D 700 860 ee 125 Heating flow Heating return Gas condensing boiler F Condensate drain safety valve Cylinder flow drain Plastic hose 22 mm Gas condensing combi boiler Domestic hot water Gas connection Gas conde
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