Viessmann CU3A Service Instructions For Contractors Download Page 34

Page: 34 / 148

Equipment required

ID: 4605300_1006_01
Pos.

Designation

Boiler

with

Control unit

Vitocrossal 300 with
Vitotronic 200, type KW6A

Outside temperature sensor ATS

DHW heating by the boiler

DHW cylinder

Cylinder temperature sensor STS

DHW circulation pump ZP

Circulation pump for cylinder heating UPSB

DHW heating by the solar thermal system

Cylinder temperature sensor STS

DHW circulation pump ZP

Circulation pump for cylinder heating UPSB

Dual mode DHW cylinder

Cylinder temperature sensor SOL

High limit safety cut-out STB

Solar collectors

Solar control module, type SM1

Collector temperature sensor KOL

Solar-Divicon

Solar circuit pump

Circulation pump (transfer)

Automatic thermostatic mixing valve

Junction box

Heating circuit I

Heating circuit pump, heating circuit A1
or

Commissioning, inspection, maintenance

Further details regarding the individual steps

(cont.)

5692 860 GB

Summary of Contents for CU3A

Page 1: ...N Vitocrossal 300 Type CU3A Gas condensing boiler with MatriX gas burner and Lambda Pro Con trol Natural gas and LPG version open and balanced flue operation For applicability see the last page VITOCROSSAL 300 5692 860 GB 6 2010 Please keep safe ...

Page 2: ...f accidents all legal instructions regarding envi ronmental protection the Code of Practice of 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 Building Regulations Norther...

Page 3: ...static dis charges Touch earthed objects such as heating or water pipes to dis charge static loads Repair work Please note 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 Ancillary components spare and wearing parts Please note Spare and wearing parts which have not bee...

Page 4: ...1 heating circuit 2 heating circuit 3 84 Diagnosis and service scans Calling up the service menu 91 Diagnosis 91 Checking outputs actuator test 93 Troubleshooting Fault display 95 Fault codes 96 Repairs 105 Function description Weather compensated control unit 113 Internal extensions accessories 114 External extension accessory 116 Control functions 118 Allocating heating circuits to the remote co...

Page 5: ...missioning service reports 138 Specification 143 Certificates Declaration of conformity 144 Manufacturer s certificate according to the 1st BImSchV Germany 144 Keyword index 145 Index Index cont 5692 860 GB ...

Page 6: ...12 10 Function sequence and possible faults 12 11 Checking the static and supply pressure 14 12 Setting the maximum output 16 13 Checking the balanced flue system tightness annular gap check 17 14 Removing the burner and checking the burner gasket 18 15 Checking burner gauze assembly and thermal insulation block 19 16 Checking and adjusting the ignition and ionisation electrodes 21 17 Separating t...

Page 7: ...ng the function of safety valves 27 Fitting the burner 28 28 Checking firm seating of electrical connections 29 Checking all gas equipment for tightness at operating pressure 29 30 Checking the combustion quality 29 31 Checking the ventilation air apertures in the installation room only for open flue operation 32 Checking the external LPG safety valve if installed 33 Matching the control unit to t...

Page 8: ...ts and diaphragms can occur as well as noise during heating operation Viessmann accepts no liability for damage or conse quential damage 1 Check whether the ventilation air supply is unrestricted 2 Check the pre charge pressure of the diaphragm expansion vessel when the system is still cold Note If the pre charge pressure of the dia phragm expansion vessel is lower than the static pressure of the ...

Page 9: ...emove the siphon and fill it with water Note There is a risk of flue gas escaping if the siphon is not filled with water 2 Refit siphon B Changing the language if required Note At the commissioning stage the display is in German default setting Extended menu 1 å 2 Settings 3 Language Sprache Cesky CZ Deutsch DE Dansk English DK GB Wählen mit Ø ç 4 Set the required language with Commissioning inspe...

Page 10: ...boiler is equipped with an electronic combustion controller that adjusts the burner for optimum combustion in accordance with the prevailing gas quality Consequently for natural gas there is no adjustment required across the entire Wobbe index range The boiler can operate in the Wobbe index range 9 5 to 15 2 kWh m3 34 2 to 54 7 MJ m3 Convert the burner for operation with LPG see Gas type conversio...

Page 11: ...11 Removing the front panel 2 1 Commissioning inspection maintenance Further details regarding the individual steps cont 5692 860 GB ...

Page 12: ... code 11 value unequal 9 End service functions 4 Open the gas shut off valve 5 Affix label G31 supplied with the technical documentation below the type plate on the side panel Function sequence and possible faults Display Measures Control unit issues a heat demand 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 pow...

Page 13: ... Ionisation current builds Symbol A no Fault EE Check the ionisa tion electrode adjustment 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 gas system for tight ness flue gas recirculation check the gas flow pressure Commissioning inspection maintenance Further details regarding the individual steps con...

Page 14: ...f required Press reset button R For further details on faults see page 95 Checking the static and supply pressure Danger CO build up as a result of an incorrect burner adjustment can have serious health implications Carry out a CO test before and after work on gas equipment Operation with LPG Flush the LPG tank twice during commissioning replacement Vent the tank and gas supply line thoroughly aft...

Page 15: ...heck the supply flow pressure Set value Natural gas 20 mbar LPG 50 mbar Note Use suitable test equipment with a resolution of at least 0 1 mbar for test ing the supply pressure 7 Record the actual value in the report on page 138 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 9 Open t...

Page 16: ...bar for LPG Notify your gas supply utility or LPG supplier Setting the maximum output You can limit the maximum output for heating operation The limit is set via the modulation range The max adjustable output is limited upwards by the boiler coding card 1 Press OK and å simultaneously for approx 4 s 2 Service functions 3 Max output 4 Change Select Yes A value flashes on the display e g 85 In the d...

Page 17: ...est 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 pressure...

Page 18: ...18 Removing the burner and checking the burner gasket Commissioning inspection maintenance Further details regarding the individual steps cont 5692 860 GB ...

Page 19: ...ntilation air adaptor A 5 Undo four nuts B and remove burner F then hook it into its service retainer L Please note Prevent damage to the burner Always hook the burner into its service retainer 6 Check burner gasket K for possible damage replace if necessary Checking burner gauze assembly and thermal insulation block Replace the burner gauze assembly if the wire mesh is damaged Commissioning inspe...

Page 20: ... insulation block F for damage and replace if required 7 Insert thermal insulating mat E and thermal insulation block F accord ing to the electrode position Note Observe the positioning aid on the thermal insulation block 8 Insert new burner gauze assembly H with new gasket G and secure with three nuts Torque 5 Nm 9 Fit the fan with the gas valve Torque 5 Nm Commissioning inspection maintenance Fu...

Page 21: ...2 Clean the electrodes with a small brush not with a wire brush or sand paper Please note Wire gauze Do not damage 3 Check the electrode gaps If the gaps are not as specified or the electrodes are damaged replace and align the electrodes together with new gas kets Tighten the electrode fixing screws with 2 5 Nm Commissioning inspection maintenance Further details regarding the individual steps con...

Page 22: ...nalloyed iron and scratches on parts in contact with flue gases can lead to corrosion Only use plastic brushes NOT wire brushes or sharp objects 1 Clean the combustion chamber and heating surfaces For normal cleaning flush the heat ing surfaces thoroughly with a water jet However you may use cleaning agents if you notice stubborn resi dues surface discolouration or soot deposits For this observe t...

Page 23: ...r thoroughly with a water jet Danger Loose residues and residual cleaning agents can lead to injury Wear goggles protective gloves and protective clothing Cleaning agent manufacturer s details Note Fauch 600 and Antox 75 E Manufacturer Hebro Chemie GmbH Rostocker Straße 40 D 41199 Mönchengladbach Cleaning and reconnecting the condensate drain system Flue box condensate drain siphon neutralising sy...

Page 24: ...tem and the neutralising system if installed Neutralising system operating instructions 6 Undo drain hose to the building drain from siphon B 7 Reconnect the neutralising system to the siphon B Checking that the condensate drain and neutralising system if installed are not obstructed and that they are free from leaks Add water to the combustion chamber Note The water must flow from the conden sate...

Page 25: ...s 2 Check lip seal D of the boiler flue connection for tightness Note The seals gaskets can also be checked under full load with an inspection mirror If required remove the thermal insulation components Traces of condensate on the outside of flue gas collector C also point towards a leak Commissioning inspection maintenance Further details regarding the individual steps cont 5692 860 GB ...

Page 26: ...fit and correct if required or replace if it is damaged Checking the diaphragm expansion vessel and system pressure Note Carry out this test on a cold system 1 Drain the system or close the cap valve at the diaphragm expansion vessel to depressurise the system until the pressure gauge indicates 0 2 If the pre charge pressure of the dia phragm expansion vessel is lower than the static system pressu...

Page 27: ...mol l The total hardness of the feed and top up water must not exceed the guidelines specified by the VDI 2035 see page 139 The pH value should be between 8 2 and 10 0 Checking the mixer for obstructions and leaks 1 Remove the motorised lever from the mixer handle 2 Check the mixer for ease of opera tion 3 Check the mixer for leaks Replace the O rings if the mixer leaks 4 Snap the motorised lever ...

Page 28: ...28 Fitting the burner 4x Commissioning inspection maintenance Further details regarding the individual steps cont 5692 860 GB ...

Page 29: ...ectronic combustion controller automatically ensures optimum combustion quality During commissioning maintenance only the combustion values need to be checked For this check the CO2 or O2 content For a description of the electronic combustion controller functions see page 125 Note Operate the appliance with uncontaminated combustion air to prevent operating faults and damage CO2 or O2 content The ...

Page 30: ...rom the above ranges by more than 1 implement steps from page 29 8 After testing press OK 9 Enter actual values into the report Select higher lower output 1 Press OK and å simultaneously for approx 4 s 2 Actuator test 3 Select the lower output Select Base load start and confirm with OK 4 Select the upper output Select Full load start and confirm with OK Matching the control unit to the heating sys...

Page 31: ...W heating by the solar thermal system Solar circuit pump wE starts and DHW cylinder qR is heated up if the tempera ture differential between collector tem perature sensor wQ and cylinder temper ature sensor qT exceeds the start tem perature differential Pump wE is stopped according to the fol lowing criteria The actual temperature drops below the stop temperature differential Exceeding the electro...

Page 32: ... 67 defaults a third set DHW temperature setting range 10 to 95 C This value must be below the first set DHW temper ature DHW cylinder qR will only be heated by boiler 1 when this set value is no longer achieved by the solar thermal system Function system components Code Adjust Delivered con dition Operation with LPG 82 1 82 0 Commissioning inspection maintenance Further details regarding the indi...

Page 33: ...0 28 5 230V 24 22 6 5 26 24 KM BUS X3 1 3 2 13 30 31 2 20 2 A1 21 2 X3 1 3 2 10 KM BUS 96 156 Return Flow Note This scheme is a basic example without shut off valves or safety equipment This does not replace the local technical engineering task Commissioning inspection maintenance Further details regarding the individual steps cont 5692 860 GB ...

Page 34: ...temperature sensor STS qW DHW circulation pump ZP qE Circulation pump for cylinder heating UPSB qR Dual mode DHW cylinder qT Cylinder temperature sensor SOL qZ High limit safety cut out STB wP Solar collectors wZ Solar control module type SM1 wQ Collector temperature sensor KOL wW Solar Divicon wE Solar circuit pump wR Circulation pump transfer wT Automatic thermostatic mixing valve wU Junction bo...

Page 35: ...fan requires internal extension H2 zW Central fault message zE External hook up Requires extension EA1 External blocking External demand External heating program changeover zR External set value 0 to 10 V requires extension EA1 zT Vitotrol 200A zZ Vitotrol 300A zU Radio clock receiver zI KM BUS distributor for several KM BUS subscribers KM BUS subscriber Extension EA1 7 Vitotrol 200A zT Vitotrol 3...

Page 36: ...40 40A 157 0 10V 64 63 1 2 145 1 2 26 40 62 S 3 4 DE1 5 6 96 7 40 L N 21 UPSB 13 M 1 28 ZP M 1 62 S 62 S 156 156 A1 12 20 A1 M 1 31 2 96 156 2 96 156 STB KOL SOL M 1 27 15 21 24 16 23 L N L N 3 4 1 2 145 1 2 26 40 24 22 6 5 7 40A 1 2 PWM L N L N L N 1 3 2 1 3 2 1 3 2 L N L N S P Ö 1 2 L N L N L N M 1 L N ID 4605300_1006_01 Commissioning inspection maintenance Further details regarding the individu...

Page 37: ...e burner of boiler 1 starts and circulation pump qE of DHW cylin der qP or qR runs Within the periods selected at control unit 2 DHW is heated with or without priority In the case of absolute priority heating circuit pump rE of the heating circuit with mixer is switched off and mixer rR is closed With modulating priority the heating circuit pump rE of the heating circuit with mixer remains on and ...

Page 38: ...ed heating by collectors wP 2 h boiler 1 will only reheat if the set cylinder temperature coding address 67 selected at boiler circuit control unit 2 is not achieved In control unit 2 coding address 67 defaults a third set DHW temperature setting range 10 to 95 C This value must be below the first set DHW temper ature DHW cylinder qR will only be heated by boiler 1 when this set value is no longer...

Page 39: ... 45 44 20 44 52 2 230V 21 A1 20 28 5 2 20 2 21 A1 KM BUS 41 44 2 10 44 20 44 KM BUS 2 230V 52 20 X3 1 3 2 2 X3 1 3 2 96 156 Return Flow Note This scheme is a basic example without shut off valves or safety equipment This does not replace the local technical engineering task Commissioning inspection maintenance Further details regarding the individual steps cont 5692 860 GB ...

Page 40: ...T Cylinder temperature sensor SOL qZ High limit safety cut out STB wP Solar collectors wZ Solar control module type SM1 wQ Collector temperature sensor KOL wW Solar Divicon wE Solar circuit pump wR Circulation pump transfer wT Automatic thermostatic mixing valve wU Junction box eP Heating circuit I eQ Heating circuit pump heating circuit A1 or Divicon rP Heating circuit II rR Extension kit for one...

Page 41: ...nsion EA1 7 Extension EA1 zP External safety solenoid valve for LPG required internal extension H1 zQ Interlock extractor fan requires internal extension H2 zW Central fault message zE External hook up Requires extension EA1 External blocking External demand External heating program changeover zR External set value 0 to 10 V requires extension EA1 zT Vitotrol 200A zZ Vitotrol 300A zU Radio clock r...

Page 42: ...0 40A 157 0 10V 64 63 1 2 145 1 2 44 40 62 S 3 4 DE1 5 6 96 7 40 L N 21 UPSB 13 M 1 28 ZP M 1 62 S 62 S 156 156 A1 12 20 A1 M 1 31 2 96 156 2 96 156 44 40 40A 1 2 145 1 2 20 52 2 1 2 N L M2 45 VTS M2 41 M 1 42 43 26 40 7 40A 145 26 2 L N L N L N 1 3 2 1 3 2 1 3 2 L N L N S P Ö 1 2 L N L N L N L N N L N M 1 ID 4605301_1006_02 Commissioning inspection maintenance Further details regarding the indivi...

Page 43: ...y boiler heating circuit controller 1 The heating circuits and DHW cylinder are each sup plied by a separate circulation pump eQ rR tR and qE Heating mode The boiler heating circuit controller reg ulates the boiler water temperature in weather compensated mode flow temperature of the heating circuit without mixer and the temperature level of the heating circuit with mixer via an exten sion kit for...

Page 44: ...ion are met by circulation pump wR Suppression of reheating of the DHW cylinder by the boiler in conjunction with solar control module type SM1 Reheating suppression takes place in two stages Reheating DHW cylinder qR by boiler 1 is suppressed as soon as DHW cyl inder qR is heated by collectors wP For this the set cylinder temperature for reheating is reduced by boiler 1 Sup pression remains activ...

Page 45: ...50 54 42 52 45 55 2 20 41 20 41 2 41 52 51 20 51 52 2 21 A1 53 51 2 41 2 52 20 KM BUS 230V 51 2 52 20 KM BUS 230V 10 51 20 2 X3 1 3 2 X3 1 3 2 96 156 Return Flow Note This scheme is a basic example without shut off valves or safety equipment This does not replace the local technical engineering task Commissioning inspection maintenance Further details regarding the individual steps cont 5692 860 G...

Page 46: ...rature sensor SOL qZ High limit safety cut out STB wP Solar collectors wZ Solar control module type SM1 wQ Collector temperature sensor KOL wW Solar Divicon wE Solar circuit pump wR Circulation pump transfer wT Automatic thermostatic mixing valve wU Junction box eP Heating circuit I eQ Heating circuit pump heating circuit A1 or Divicon rP tP Heating circuits II and III rQ tQ Extension kit for one ...

Page 47: ...ension EA1 zP External safety solenoid valve for LPG required internal extension H1 zQ Interlock extractor fan requires internal extension H2 zW Central fault message zE External hook up Requires extension EA1 External blocking External demand External heating program changeover zR External set value 0 to 10 V requires extension EA1 zT Vitotrol 200A zZ Vitotrol 300A zU Radio clock receiver zI KM B...

Page 48: ...40 40A 157 0 10V 64 63 1 2 145 1 2 41 40 62 S 3 4 DE1 5 6 96 7 40 L N 21 UPSB 13 M 1 28 ZP M 1 62 S 62 S 156 156 A1 12 20 A1 M 1 31 2 96 156 2 96 156 41 40 40A 1 2 145 1 2 20 52 2 1 2 N L M2 45 VTS M2 42 M 1 44 51 40 7 40A 145 51 2 L N L N L N 1 3 2 1 3 2 1 3 2 L N L N S P Ö 1 2 L N L N L N L N N L N M 1 ID 4605302_1006_01 Commissioning inspection maintenance Further details regarding the individu...

Page 49: ... the lower the outside temperature the higher the boiler water or flow temperature The room temperature again depends on the boiler water or the flow tempera ture Note If the heating system includes heating circuits with mixers then the flow tem perature of the heating circuit without mixer is higher by a selected differential 8 K in the delivered condition than the flow temperature of the heating...

Page 50: ...0 0 5 10 15 20 5 10 A B 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 A Heating curve slope for underfloor heating systems B Heating curve slope for low temper ature heating systems according to the Energy Savings Order Ger many Commissioning inspection maintenance Further details regarding the individual steps cont 5692 860 GB ...

Page 51: ... according to the system requirements Adjusting the set room temperature Standard room temperature 90 20 26 20 A C D E B Example 1 Adjustment of the standard room temperature from 20 to 26 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 Adjustment of the standard room temperature Opera...

Page 52: ... unit to the LON The 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 300 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 num ber cannot be allo...

Page 53: ...ture Set code 97 1 The control unit receives the outside temperature Set code 97 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 Communication with the system devices connected to the fault manager is tested with a subscriber check Preconditions The control unit must be programmed...

Page 54: ...resetting the Service display After the limits specified in coding addresses 21 and 23 have been reached the red 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 reset ...

Page 55: ...ng the system user The system installer must hand the oper ating instructions to system users and instruct them in the operation of the sys tem Commissioning inspection maintenance Further details regarding the individual steps cont 5692 860 GB ...

Page 56: ...tions the selected des ignation and HC1 HC2 or HC3 appear instead 1 Press OK and å simultaneously for approx 4 s 2 Coding level 1 3 Select group of required coding address General Boiler DHW Solar Heating circuit 1 2 3 All cod or solar In this group all coding addresses from coding level 1 except the cod ing addresses from the Solar group are displayed in ascending order 4 Select coding address 5 ...

Page 57: ... without DHW heating code is adjusted automatically 6 2 One heating circuit without mixer heating circuit 1 and one heating circuit with mixer heating circuit 2 with DHW heating code is adjusted automatically 7 3 One heating circuit with mixer heating circuit 2 and one heating circuit with mixer heating circuit 3 without DHW heating 8 3 One heating circuit with mixer heating circuit 2 and one heat...

Page 58: ...g Separate adjustment of holiday program and time program for DHW heating possible Lock out controls 8F 0 All control elements active 8F 1 All control elements locked out 8F 2 Only standard settings can be controlled Set flow temperature for ext demand 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 ...

Page 59: ...atically set and must be manually reset after a service has been carried out Filling Venting 2F 0 Never adjust DHW Coding Coding in the delivered condition Possible change Set DHW temperature Reheating suppression 67 40 For solar DHW heating Set DHW temperature 40 C Reheating is sup pressed above the selec ted set temperature 67 0 to 67 95 Set DHW temperature adjustable from 0 to 95 C limited by b...

Page 60: ...emperature 08 10 to 08 90 The maximum cylinder temperature can be adjus ted from 10 to 90 C Reducing stagnation time 0A 5 To protect the system components and heat transfer medium the speed of the solar circuit pump is reduced when the differential between the actual cylinder tem perature and set cylinder temperature is less than 5 K 0A 0 to 0A 40 The differential between the set cylinder tempera ...

Page 61: ...itional temperature sensor 20 8 Solar heating via external heat exchanger with addi tional temperature sensor 20 9 Solar heating of two DHW cylinders Heating circuit 1 heating circuit 2 heating circuit 3 Coding Coding in the delivered condition Possible change Summer eco function outside temperature A5 5 With heating circuit pump logic function economy circuit Heating circuit pump OFF when the out...

Page 62: ...ute A6 36 Extended economy mode disabled A6 5 to A6 35 Extended economy control enabled i e the burner and heating circuit pump will be stopped and the mixer closed at a variable value adjustable between 5 and 35 C plus 1 C The base value is the adjusted out side temperature This value is based on the actual outside temperature and a time constant that takes the cooling down of an average building...

Page 63: ... Without pump idle time A9 1 to A9 15 With pump idle time adjustable from 1 to 15 Weather compensated room temperature hook up b0 0 With remote control Heating mode reduced operation weather com pensated change code only for the heating circuit with mixer b0 1 Heating mode weather compensated Reduced mode with room temperature hook up b0 2 Heating mode with room temperature hook up Reduced mode we...

Page 64: ...ters Flow temperature maximum limit C6 74 Electronic maximum flow temperature limit set to 74 C C6 10 to C6 127 Maximum limit adjustable from 10 to 127 C limited by boiler specific parame ters Heating program changeover d5 0 External heating program changeover changes to Constant operation with reduced room tempera ture or Standby mode d5 1 The external heating pro gram changeover changes to Const...

Page 65: ...limit adjusta ble from 10 to 60 C F8 61 Function disabled End temperature raising F9 14 Temperature limit for rais ing the reduced set room temperature 14 ºC see example on page 122 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 Increase set flow temperature FA 20 Raising the set boiler water temperature o...

Page 66: ...increase Fb 30 Duration for raising the set boiler water tempera ture or the set flow tem perature see coding address FA 60 min See example on page 123 Fb 0 to Fb 150 Duration adjustable from 0 to 300 min 1 step 2 min Code 1 Heating circuit 1 heating circuit 2 heating cont 5692 860 GB ...

Page 67: ...for approx 4 s 2 Press OK and ä simultaneously for approx 4 s 3 Coding level 2 4 Select group of required coding address General Boiler DHW Solar Heating circuit 1 2 3 All cod or solar In this group all coding addresses except the coding addresses from the Solar group are displayed in ascending order 5 Select coding address 6 Select value according to the follow ing tables and confirm with OK 7 If...

Page 68: ...3 without DHW heat ing 8 3 One heating circuit with mixer heating circuit 2 and one heat ing circuit with mixer heating circuit 3 with DHW heating 9 3 One heating circuit without mixer heating circuit 1 one heat ing circuit with mixer heating circuit 2 and one heating circuit with mixer heating circuit 3 without DHW heating code is adjusted automatically 10 3 One heating circuit without mixer heat...

Page 69: ... Cod ing address 5F Function heating circuit pumps Coding address D7 3A 3 Function input DE1 Exter nal blocking Function circulation pump for cylinder heating Cod ing address 5E Function heating circuit pumps Coding address D6 3A 4 Function input DE1 Exter nal blocking with fault mes sage input Function circulation pump for cylinder heating Cod ing address 5E Function heating circuit pumps Coding ...

Page 70: ...heating Cod ing address 5F Function heating circuit pumps Coding address D7 3b 3 Function input DE2 Exter nal blocking Function circulation pump for cylinder heating Cod ing address 5F Function heating circuit pumps Coding address D7 3b 4 Function input DE2 Exter nal blocking with fault mes sage input Function circulation pump for cylinder heating Cod ing address 5E Function heating circuit pumps ...

Page 71: ...heating Cod ing address 5F Function heating circuit pumps Coding address D7 3C 3 Function input DE3 Exter nal blocking Function circulation pump for cylinder heating Cod ing address 5F Function heating circuit pumps Coding address D7 3C 4 Function input DE3 Exter nal blocking with fault mes sage input Function circulation pump for cylinder heating Cod ing address 5E Function heating circuit pumps ...

Page 72: ...ule SM1 with auxiliary function e g central heating backup automatic recognition 6E 50 Never adjust 76 0 Without LON communi cation module 76 1 With LON communication module automatic recog nition 77 1 LON subscriber number if a LON communication module is installed 77 2 to 77 99 LON subscriber number adjustable from 1 to 99 1 Boiler 2 5 Never adjust 10 98 Vitotronic 200 H 99 Vitocom Note Assign e...

Page 73: ...l unit receives the time 82 0 Operation with natural gas 82 1 Operation with LPG only adjustable if coding address 11 9 has been set 86 0 Never adjust 87 0 Never adjust 88 0 Temperature displayed in C Celsius 88 1 Temperature displayed in F Fahrenheit 8A 175 Never adjust 8F 0 All control elements active 8F 1 All control elements locked out 8F 2 Only standard settings can be controlled 90 128 Time ...

Page 74: ... tems via Vitocom 300 98 1 to 98 5 System number adjustable from 1 to 5 99 0 Never adjust 9A 0 Never 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 Monitoring LON subscrib ers If a subscriber fails to respond the values specified inside the con trol unit will...

Page 75: ...21 0 No service interval hours run selected 21 1 to 21 100 Number of hours run before the burner should be serviced is adjustable from 100 to 10 000 h One adjusting step 100 h 23 0 No time interval for burner service 23 1 to 23 24 Interval adjustable from 1 to 24 months 24 0 No Service display 24 1 Service display the address is automatically set and must be manually reset after a service has been...

Page 76: ...ng 5E 1 Circulation pump for cylin der heating stops at signal External blocking 5E 2 Circulation pump for cylin der heating starts at signal External blocking 5F 0 Circulation pump for cyl inder heating stays in control mode at signal External demand 5F 1 Circulation pump for cylin der heating stops at signal External demand 5F 2 Circulation pump for cylin der heating starts at signal External de...

Page 77: ...min output to 100 71 0 DHW circulation pump On according to time program 71 1 Off during DHW heating to the first set value 71 2 On during DHW heating to the first set value 72 0 DHW circulation pump On according to time program 72 1 Off during DHW heating to the second set value 72 2 On during DHW heating to the second set value 73 0 DHW circulation pump On according to time program 73 1 to 73 6 ...

Page 78: ... control led 02 1 Solar circuit pump step ped is speed controlled with wave pack control stepped pump 02 2 Solar circuit pump is speed controlled with PWM control 03 10 The temperature differen tial between the collector temperature and actual cylinder temperature is regulated to 10 K 03 5 to 03 20 The differential tempera ture control between col lector temperature and actual cylinder tempera tur...

Page 79: ...protect the system components 09 20 to 09 200 The temperature can be adjusted from 20 to 200 C 0A 5 To protect the system components and heat transfer medium the speed of the solar circuit pump is reduced when the differential between the actual cylinder tem perature and set cylinder temperature is less than 5 K 0A 0 to 0A 40 The differential between the set cylinder tempera ture and the start poi...

Page 80: ...xi mum pump speed is set to 7 l min 0F 1 to 0F 255 Flow rate in the collector circuit adjustable from 0 1 to 25 5 l min 10 0 Target temperature con trol switched off see cod ing address 11 10 1 Target temperature control switched on 11 50 Set cylinder temperature for solar 50 C Target temperature control switched on code 10 1 Temperature at which the solar heated water in the DHW cylinder is to be...

Page 81: ...ture control 2 and auxiliary func tion 20 4 Differential temperature control 2 for central heating backup 20 5 Thermostat function 20 6 Thermostat function and auxiliary function 20 7 Solar heating via external heat exchanger without additional temperature sensor 20 8 Solar heating via external heat exchanger with addi tional temperature sensor 20 9 Solar heating of two DHW cylinders 22 8 Start te...

Page 82: ...re for thermostat function 40 C Start temperature for thermostat function stop temperature for ther mostat function Thermostat function e g for reheating Switching output sS is switched on when the temperature at sensor falls below the start temperature for the thermostat function Start temperature for thermostat function stop temperature for ther mostat function Thermostat function e g for utilis...

Page 83: ...function Thermostat function e g for utilising excess heat Switching output sS is switched off when the temperature at sen sor falls below the start temperature for the thermostat function 25 0 to 25 100 Start temperature for ther mostat function is adjusta ble from 0 to 100 K 26 1 Priority for DHW cylinder 1 with alternate heat ing Only when setting code 20 8 26 0 Priority for DHW cylinder 1 with...

Page 84: ...r nate pause duration 28 1 to 28 60 The alternate pause dura tion is adjustable from 1 to 60 min Heating circuit 1 heating circuit 2 heating circuit 3 Coding Coding in the delivered condition Possible change A0 0 Without remote control A0 1 With Vitotrol 200A auto matic recognition A0 2 With Vitotrol 300A or Vitohome 300 automatic recognition A1 0 All possible settings at the remote control can be...

Page 85: ...4 C 16 C Coding in the delivered condition Possible change A4 0 With frost protection A4 1 No frost protection this set ting is only possible if code A3 9 has been selected Note Please note for code A3 A5 5 With heating circuit pump logic function economy circuit Heating circuit pump Off when the out side temperature AT is 1 K higher than the set room temperature RTset AT RTset 1 K A5 0 Without he...

Page 86: ...alue adjustable between 5 and 35 C plus 1 C The base value is the adjusted out side temperature This value is based on the actual outside temperature and a time constant that takes the cooling down of an average building into consideration A7 0 Without mixer economy function only for heating circuits with mixer A7 1 With mixer economy func tion extended heating cir cuit pump logic Heating circuit ...

Page 87: ...h remote control and for the heating circuit operation with room tem perature hook up must be programmed Room influ ence factor 8 change code only for heating cir cuit with mixer b2 0 Without room influence b2 1 to b2 64 Room influence factor adjustable from 1 to 64 b5 0 With remote control No room temperature dependent heating circuit pump logic function change code only for heating circuit with ...

Page 88: ... curve level adjust able from 13 to 40 see page 49 d5 0 External heating program changeover changes to Constant operation with reduced room tempera ture or Standby mode d5 1 The external heating pro gram changeover changes to Constant operation with standard room tempera ture subject to coding address 3A 3b and 3C d6 0 Heating circuit pump stays in control mode at signal External block ing d6 1 He...

Page 89: ...files see page 120 F1 15 Constant flow temperature 20 C F2 8 Time limit for party mode or external heating pro gram changeover via key 8 h 1 F2 0 No time limit for party mode 1 F2 1 to F2 12 Time limit adjustable from 1 to 12 h 1 F8 5 Temperature limit for ter minating reduced mode 5 ºC see example on page 122 Observe the setting of coding address A3 F8 10 to F8 60 Temperature limit adjusta ble fr...

Page 90: ...operation with standard room temperature by 20 See example on page 123 FA 0 to FA 50 Temperature rise adjusta ble from 0 to 50 Fb 30 Duration for raising the set boiler water tempera ture or the set flow tem perature see coding address FA 60 min See example on page 123 Fb 0 to Fb 150 Duration adjustable from 0 to 300 min 1 step 2 min Code 2 Heating circuit 1 heating circuit 2 heating cont 5692 860...

Page 91: ... data can be scanned in six areas See Diagnosis in the service menu overview Operating data on heating circuits with mixers and solar can only be scanned if the components are installed in the system For further information on operating data see chapter Brief scan Note appears on the display if a sensor that has been scanned is faulty Calling up operating data 1 Press OK and å simultaneously for a...

Page 92: ... for approx 4 s 2 Diagnosis 3 Brief scan 4 Press OK The display shows 9 lines with 6 fields each Diagnose Kurzabfrage 2 1 3 4 Wählen mit Ø 0 0 0 1 F 0 0 0 0 0 0 0 A 0 0 0 0 0 0 1 2 0 0 0 For an explanation of the relevant values in the individual lines and fields see the following table Line brief scan Field 1 2 3 4 5 6 1 Software version Control unit Appliance version Burner control unit ver sion...

Page 93: ...mixer Heating circuit M3 with mixer 7 Remote control 0 w o 1 Vitotrol 200A 2 Vitotrol 300A or Vitohome Software version Remote control 0 no remote control Remote control 0 w o 1 Vitotrol 200A 2 Vitotrol 300A or Vitohome Software version Remote control 0 no remote control Remote control 0 w o 1 Vitotrol 200A 2 Vitotrol 300A or Vitohome Software version Remote control 0 no remote con trol 8 0 0 0 0 ...

Page 94: ...with mixer Mixer HC3 open Mixer open output enabled extension to heating circuit with mixer Mixer HC3 close Mixer closed output enabled extension to heating cir cuit with mixer Outp int exten H1 start Output at internal extension H1 H2 enabled EA1 output 1 start Contact P S on plug aBJ for extension EA1 closed Solar circuit pump start Solar circuit pump sF output at solar control module SM1 enable...

Page 95: ...hort menu A fault messaging facility if connected will be switched off If an acknowledged fault is not remedied the fault message will be re displayed 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 ...

Page 96: ...ature sen sor heating circuit 2 with mixer Check flow temperature sensor 44 Mixer closes Short circuit flow temperature sen sor heating circuit 3 with mixer Check flow temperature sensor 48 Mixer closes Lead break flow temperature sen sor heating circuit 2 with mixer Check flow temperature sensor 4C Mixer closes Lead break flow temperature sen sor heating circuit 3 with mixer Check flow temperatur...

Page 97: ...reak collec tor temperature sensor Check temperature sen sor on solar control module or Vitosolic sen sor 9b Control mode Lead break cylin der temperature sensor Check temperature sen sor at connection S3 to Vitosolic 100 9C No solar DHW heat ing Lead break cylin der temperature sensor Check temperature sen sor on solar control module or Vitosolic sen sor 9E Control mode No flow rate in col lector...

Page 98: ...xtension kit for heating circuit 3 with mixer Check extension kit con nections and code bC Control mode without remote control Communication error remote con trol Vitotrol heating circuit 1 without mixer Check connections lead coding address A0 and remote control settings see page 125 bd Control mode without remote control Communication error remote con trol Vitotrol heating circuit 2 with mixer C...

Page 99: ...cation module d6 Control mode Input DE1 reports a fault at extension EA1 Remove fault at appliance concerned d7 Control mode Input DE2 reports a fault at extension EA1 Remove fault at appliance concerned d8 Control mode Input DE3 reports a fault at extension EA1 Remove fault at appliance concerned dA Control mode without room influence Short circuit room temperature sen sor heating circuit 1 witho...

Page 100: ... mixer Check room temperature sensor for heating circuit 3 and remote control set tings see page 125 E0 Control mode Fault external LON subscriber Check connections and LON subscribers E1 Burner in a fault state Ionisation current too high during cal ibration Check gap between ioni sation electrode and burner gauze assembly see page 21 In open flue mode pre vent very dusty conditions for the combu...

Page 101: ...ly gas pressure and gas flow lim iter gas train and con necting lead Check allocation of gas type see page 12 Check ionisation elec trode Distance to burner gauze assembly see page 21 Contamination of elec trode Press reset button R EA Burner in a fault state Ionisation current outside permissi ble range during calibration devia tion from previous level too great Check flue system rem edy flue gas...

Page 102: ...ing calibration Press reset button R or Replace boiler coding card and press reset but ton R Ed Burner in a fault state Internal fault Replace control unit EE Burner in a fault state Flame signal is not present or too weak at burner start Check gas supply gas pressure and gas flow lim iter Check gas train Check ionisation elec trode and connecting cable Check ignition Connecting leads to ignition ...

Page 103: ...nded Check heating system fill level Vent the system Press reset button R after flue system has cooled down F2 Burner in a fault state Temperature lim iter has responded Check heating system fill level Check circulation pump Vent the system Check temperature limiter and connecting cables Press reset button R F3 Burner in a fault state Flame signal is already present at burner start Check ionisatio...

Page 104: ...train Check flue system Press reset button R Fd Burner in a fault state Fault burner con trol unit Check ignition electrodes and connecting cables Check whether a strong interference EMC field exists near the appliance Press reset button R Replace control unit if fault persists FE Burner blocked or in a fault state Boiler coding card or main PCB faulty Press reset button R Replace boiler coding ca...

Page 105: ...105 Checking the outside temperature sensor X3 A Boiler top panel B Control unit enclosure cover panel Troubleshooting Repairs 5692 860 GB ...

Page 106: ...compare it with the curve 3 Where actual values deviate severely from the curve values disconnect the wires at the sensor and repeat test on the sensor itself 4 Subject to result replace the lead or the outside temperature sensor Checking cylinder temperature sensor 5 1 Cylinder temperature sensor Pull plug and measure the resist ance 2 Check the sensor resistance and compare it with the curve Tro...

Page 107: ... in kΩ 3 Replace the sensor in the case of severe deviation Checking the boiler water temperature sensor 3 1 Boiler water temperature sensor Pull plug and measure the resist ance 2 Check the sensor resistance and compare it with the curve Troubleshooting Repairs cont 5692 860 GB ...

Page 108: ...iation Checking the flue gas temperature sensor The flue gas temperature sensor locks out the boiler when the permissible flue gas temperature is exceeded Reset the interlock after the flue system has cooled down by pressing reset button R 1 Pull the leads from flue gas tempera ture sensor A Troubleshooting Repairs cont 5692 860 GB ...

Page 109: ...not be reset after a fault shutdown although the boiler water temperature is below approx 85 C check the following 47 1 Pull the leads from temperature lim iter fJ 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 reset but ton...

Page 110: ...110 Checking the fuse F1 1 Switch off the power 2 Remove top panel A and cover B 3 Check fuse F1 see connection and wiring diagram Troubleshooting Repairs cont 5692 860 GB ...

Page 111: ...pened and closed again Note the rotational direction of the mixer motor during its self test Then set the mixer manually to Open again Note The flow temperature sensor must now capture a higher temperature If the tem perature drops either the motor is turn ing in the wrong direction or the mixer set is incorrectly fitted Mixer installation instructions Changing the rotational direction of the mixe...

Page 112: ...g the Vitotronic 200 H accessories 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 53 Troubleshooting Repairs cont 5692 860 GB ...

Page 113: ... the modulation level and regu lates the burner accordingly The electronic temperature limiter inside the burner control unit limits the boiler water temperature DHW heating The burner the circulation pump and the three way valve are started or changed over if the cylinder temperature lies 2 5 K below the set cylinder temperature The set boiler water temperature is adjusted 20 K higher than the se...

Page 114: ...if a switching period is selected for the fourth time phase The set temperature value for the heat ing boost is adjustable in coding address 58 Internal extensions accessories Internal extension H1 Function description Weather compensated control unit cont 5692 860 GB ...

Page 115: ...rnal safety valve can be con nected to gD Internal extension H2 The internal extension is integrated into the control unit casing A central fault message facility can be connected to relay output A1 An extractor fan can be switched off via connection aBJ when the burner starts Function description Internal extensions accessories cont 5692 860 GB ...

Page 116: ...2 DE3 Digital input 3 0 10 V 0 10 V input fÖ Power supply fÖ A Power supply terminal for addi tional accessories aBJ Central fault message feed pump DHW circulation pump potential free aVG KM BUS Function description External extension accessory 5692 860 GB ...

Page 117: ... DE3 Code d8 3 Select the effect of the heating program changeover via code d5 Set the duration of the changeover via code F2 Effect on the pumps of external block ing function The effect on the relevant heating circuit pump is selected with code d6 The effect on a circulation pump for cyl inder heating is selected with code 5E Effect on the pumps of the external demand function The effect on the ...

Page 118: ...am changeover function for the respective heating circuit via code d8 at the boiler control unit Heating program changeover Code Changeover via input DE1 d8 1 Changeover via input DE2 d8 2 Changeover via input DE3 d8 3 You can select which direction the heat ing program changeover takes in coding address d5 Heating program changeover Code Changeover towards Permanently reduced or Permanent standby...

Page 119: ...uts available at extension EA1 DE1 to DE3 The function is selected via the following codes External blocking Code Input DE1 3A 3 Input DE2 3b 3 Input DE3 3C 3 External blocking and fault message input Code Input DE1 3A 4 Input DE2 3b 4 Input DE3 3C 4 The effect on a circulation pump for cyl inder heating is selected with code 5E The effect on the relevant heating circuit pump is selected with code...

Page 120: ...ance with the selected profile After comple tion 30 days the mixer circuit will again be regulated automatically via the set parameters Observe EN 1264 The report to be pro vided by the heating contractor must contain the following heat up details Heat up data with respective flow tem peratures Max flow temperature achieved Operating conditions and outside tem perature during handover The various ...

Page 121: ...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 5692 860 GB ...

Page 122: ...ion with reduced 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 the temperature raising can be adjusted via coding addresses F8 and F9 Function descrip...

Page 123: ...om temperature 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 of the set boiler water or flow ...

Page 124: ... with 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 5692 860 GB ...

Page 125: ...ontroller The electronic combustion controller uti lises the physical correlation between the level of the ionisation current and the air factor λ For all gas qualities the max imum ionisation current results with air factor 1 The ionisation signal is evaluated by the combustion controller and the air factor is adjusted to between λ 1 24 and 1 44 This range provides for an optimum com bustion qual...

Page 126: ...timum combustion con trol the system regularly carries out an automatic self calibration also after a power failure shutdown For this the combustion is briefly regulated to max ionisation current equals air factor λ 1 The automatic calibration is carried out shortly after the burner start and lasts approx 5 s During calibration higher than normal CO emissions may occur briefly Function description...

Page 127: ...127 A1 Main PCB A3 Programming unit A4 Burner control unit A5 Coding card A6 Connection adaptor A7 LON communication module Designs Internal connection diagram 5692 860 GB ...

Page 128: ...re sensor Cylinder temperature sensor Plug on the cable harness aG Flue gas temperature sensor fJ Temperature limiter a Ö Fan motor a ÖA Fan motor control aYA Gas pressure switch aVG KM BUS a Ö Modulation coil A1 Main PCB A2 Power supply unit Designs Internal connection diagram cont 5692 860 GB ...

Page 129: ...tion electrode sA Circulation pump for cylinder heating dG Gas solenoid valve fÖ Power supply gD External safety solenoid valve LPG gF Ignition unit lH Power supply of accessories a Ö Fan motor a ÖA Fan motor control Designs Internal connection diagram cont 5692 860 GB ...

Page 130: ...130 A1 Main PCB A5 PCB SA 104 S1 On off switch X Electrical interfaces Outside temperature sensor aA Ionisation electrode Designs External connection diagram 5692 860 GB ...

Page 131: ...ulation pump for cylinder heat ing sK DHW circulation pump dG Gas solenoid valve fÖ Power supply gF Ignition unit lH Power supply of accessories a Ö Fan motor aVG KM BUS aBJ External extractor interlock Designs External connection diagram cont 5692 860 GB ...

Page 132: ...se 121 Hose clip 122 Gasket ignition electrode 5 pce 123 Gasket ionisation electrode 5 pce 200 Front panel 201 Top panel back 202 Top panel front 203 Retaining panel control unit 204 Retaining bracket bottom front 205 Side panel l h and r h side 206 Back panel 207 Cover panel 208 Thermal insulation mat back 209 Thermal insulation mat front 210 Retaining bracket 211 Thermal insulation jacket 212 Vi...

Page 133: ... 411 Cable harness connection exten sion X7 416 Outside temperature sensor NTC 417 Boiler water temperature sensor NTC 10k 418 Cylinder temperature sensor NTC 10k 419 Mating plug A Type plate Parts lists Parts lists cont 5692 860 GB ...

Page 134: ...134 208 206 200 207 209 204 210 205 210 205 211 203 202 201 213 A 408 400 214 212 Parts lists Parts lists cont 5692 860 GB ...

Page 135: ...135 420 413 408 401 404 412 407 409 406 401 403 401 403 401 401 403 404 415 401 404 414 408 420 Parts lists Parts lists cont 5692 860 GB ...

Page 136: ...136 119 009 003 120 002 001 005 010 007 006 008 007 004 003 003 121 121 Parts lists Parts lists cont 5692 860 GB ...

Page 137: ...137 101 106 109 102 114 113 108 115 107 115 105 100 111 115 103 122 123 115 104 115 112 110 115 117 116 118 Parts lists Parts lists cont 5692 860 GB ...

Page 138: ... 5 Tick gas type Carbon dioxide con tent CO2 For natural gas E and LL at lower output by vol 7 7 9 2 at upper output by vol 7 7 9 2 For LPG at lower output by vol 9 3 10 9 at upper output by vol 9 3 10 9 Oxygen content O2 at lower output by vol 4 4 6 9 at upper output by vol 4 4 6 9 Carbon monoxide content CO at lower output ppm 60 at upper output ppm 60 Commissioning service reports Commissioning...

Page 139: ...l l 500 3 0 16 8 50 to 200 2 0 11 2 200 to 600 1 5 8 4 600 0 02 0 11 The standard values assume the follow ing The volume of fill and top up water of the heating system during its service life will not exceed three times the water content of the heating system The specific system volume is less than 20 l kW output In multi boiler sys tems apply the output of the smallest boiler All measures to pre...

Page 140: ...o observe the follow ing during commissioning Commission the system step by step starting with the lowest boiler output and at a high heating water flow rate This prevents a localised concentra tion of limescale deposits on the boiler heating surfaces In multi boiler systems start all boilers simultaneously to prevent the entire lime deposit settling in the heat trans fer area of just one boiler W...

Page 141: ...m if they are correctly sized and oper ate at the correct pressure At every part of the heating system even at the suc tion side of the pump and under all oper ating conditions the system pressure should be above ambient atmospheric pressure The pre charge pressure of the expansion vessel should be checked at least during the annual service The use of permeable components e g plas tic pipes that a...

Page 142: ...e of suitability of the additives with regard to the boiler mate rials and the materials of the other heat ing equipment components We recom mend you refer questions regarding water quality treatment to an appropriate specialist Further details can be found in VDI Directive 2035 2 and EN 14868 Water quality requirements cont 5692 860 GB ...

Page 143: ... 0085 BN 0570 Supply values in relation to the max load Natural gas E m3 h 2 61 3 52 4 47 5 95 Natural gas LL m3 h 3 04 4 1 5 19 6 91 LPG m3 h 1 93 2 6 Product parameters according to EnEV Efficiency η at 100 of rated output 96 8 96 6 96 9 97 1 at 30 of rated output 107 3 107 4 107 3 107 5 Standby loss qB 70 boiler 1 2 0 8 0 7 0 5 Power consumption at full load W 37 56 68 115 at partial load W 16 ...

Page 144: ... is designated _ 0085 92 42 EEC 2006 95 EC 2004 108 EC 2009 142 EC This product meets the requirements of the Efficiency Directive 92 42 EEC for con densing boilers Allendorf 01 June 2010 Viessmann Werke GmbH Co KG pp Manfred Sommer Manufacturer s certificate according to the 1st BImSchV Ger many We Viessmann Werke GmbH Co KG D 35107 Allendorf confirm that the product Vitocrossal 300 complies with...

Page 145: ...Internal H1 114 Internal H2 115 Extension kit for heating circuit with mixer 111 External blocking 119 External demand 119 F Fault codes 96 Fault history 95 Fault manager 53 Fault memory 95 Faults 95 Fill and top up water 27 Fill water 8 Fitting the burner 28 Flue gas temperature sensor 108 Function descriptions 113 Fuse 110 G Gas supply pressure 15 Gas train 15 Gas type 10 Gas type conversion 12 ...

Page 146: ... operating conditions 91 Scanning operating data 91 Screed drying 120 Screed drying function 120 Service scanning 54 Setting the date 10 Setting the time 10 Small softening system 8 Specification 143 Standard room temperature 51 Static pressure 15 Supply pressure 14 System schemes 30 56 T Temperature limiter 109 Tightness test balanced flue system 17 Total hardness of the boiler water 27 V Vitocom...

Page 147: ...147 5692 860 GB ...

Page 148: ... 7439 245 Viessmann Limited 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 5692 860 GB Subject to technical modifications Printed on environmentally friendly chlorine free bleached paper ...

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Summary of Contents for CU3A

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Viessmann CU3A, Service Instructions For Contractors, Page: 34 / 148

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