Viessmann VITOPEND 200 Installation And Service Instructions For Contractors Download Page 129

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Upper rated output

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27, 39

Venting program

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106

Vitocom 300

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Vitotronic 200-H

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Vitotronic 200-H

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Wiring diagram

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113

Keyword index

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129

Keyword index

5592

817

Summary of Contents for VITOPEND 200

Page 1: ...nstructions for contractors Vitopend 200 W Type WHKA 10 5 to 29 3 kW Gas fired combi boiler for balanced flue operation Natural gas and LPG version For applicability see the last page VITOPEND 200 W 5...

Page 2: ...legal instructions regarding the prevention of accidents all legal instructions regarding environmental protection the Code of Practice of relevant trade associations all current safety regulations a...

Page 3: ...loads Repair work Please note Repairing components which fulfil a safety function can com promise the safe operation of your heating system Replace faulty components only with original Viessmann spare...

Page 4: ...s commissioning inspection and maintenance 18 Further details regarding the individual steps 20 Coding Code 1 53 Code 2 55 Resetting codes to their delivered condition 70 Service scans Service level o...

Page 5: ...nternal connections 113 Connection and wiring diagram external connections 115 Parts lists 117 Commissioning service reports 123 Specification 124 Certificates Declaration of conformity 126 Keyword in...

Page 6: ...pe plate For deliveries to alternative countries an approved con tractor on his own initiative must arrange an individual approval in accordance with the law of the land Preparing for installation Pre...

Page 7: ...ating return Rp F Fill drain valve G Cable entry 1 Prepare the water connections Flush the heating system 2 Prepare the gas connection according to TRGI or TRF or all local regulations Preparing for i...

Page 8: ...3 x 1 5 mm2 fuse max 16 A 230 V 50 Hz Accessory cables NYM with the required number of conductors for the external connections Allow all cables in area G to protrude 1200 mm from the wall Preparing f...

Page 9: ...Installing the boiler and making all connections 9 Installation sequence 5592 817 GB Installation...

Page 10: ...systems 60 100 or 80 125 D Boiler connection bend for the horizontal installation of the flue gas system 60 100 1 Release the tensioning screws on the boiler outlet flange 2 Insert the boiler flue co...

Page 11: ...nal safety solenoid valve in conjunction with internal extension H1 2 Carry out a leak soundness test Please note Excessive test pressure may damage the boiler and the gas valve Max test pressure 150...

Page 12: ...Opening the control unit casing 12 Installation sequence 5592 817 GB...

Page 13: ...arate installation instructions provided Please note Electronic modules can be damaged by electrostatic discharges Touch earthed objects such as heating or water pipes to discharge sta tic loads to ea...

Page 14: ...nit The power supply connection for accessories can be made immedi ately at the control unit if the boil er is installed outside wet areas This connection is controlled directly with the system ON OFF...

Page 15: ...g connecting cables on site ensure that the maximum permissible temperatures for these cables are not exceeded A Low voltage connections B 230 V connections C Internal extension D Main PCB E Communica...

Page 16: ...Fitting the programming unit into the control unit 16 Installation sequence 5592 817 GB...

Page 17: ...Fitting the front panel 17 Installation sequence 5592 817 GB Installation...

Page 18: ...pe 22 08 Changing the gas type see separate installation instructions 09 Function sequence and possible faults 23 10 Checking the static and supply pressure 25 11 Checking the nozzle pressure 27 12 Se...

Page 19: ...ing the external LPG safety valve if installed 26 Matching the control unit to the heating system 41 27 Adjusting the heating curves only for weather compensated control units 45 28 Connecting the con...

Page 20: ...valve A in the heating return on the connection set or on site Minimum system pressure 0 8 bar Note If the control unit has not been switched ON prior to filling the sys tem then the servomotor of the...

Page 21: ...Setting the time and date if required only for weather compensated control units Note During commissioning or after a prolonged time out of use it may be necessary to reset the time and date if the t...

Page 22: ...b for the required language 5 d to confirm Checking the gas type Note The boiler is set up in the factory for natural gas E 1 Check the gas type and Wobbe index Ws with your gas supply uti lity or LPG...

Page 23: ...P 20 3 to 21 3 72 9 to 76 8 Function sequence and possible faults Display screen Measures Control unit is sues heat de mand No Increase set value and ensure heat is drawn off Yes Fan starts No after a...

Page 24: ...an 4 A Symbol A No Fault F4 Check the ionisa tion current check the elec trode adjustment and the gas pipe for airlocks Yes Burner in opera tion Stops below the set boiler water temperature and restar...

Page 25: ...t in the service report Set value max 57 5 mbar 5 Start the boiler Note During commissioning the boiler can enter a fault state because of airlocks in the gas pipe After approx 5 s press E RESET to re...

Page 26: ...mbar below 42 5 mbar Do not start the boiler Notify your mains gas or LPG supplier 17 4 to 25 mbar 42 5 to 57 5 mbar Start the boiler above 25 mbar above 57 5 mbar Install a separate gas pressure gove...

Page 27: ...and then Base load is shown a Full load is shown 5 Remove cap B from the gas train 6 Test the nozzle pressure at the upper rated output In case of deviations from the value shown in the following tabl...

Page 28: ...e screw 14 Open the gas shut off valve and start up the boiler Danger Gas escaping from the test port leads to a risk of explosion Check the test connector for soundness Note The values in the nozzle...

Page 29: ...100 flashes equals 29 kW output and A is displayed On weather compen sated control units the display additionally shows Max output a b for the required output 34 equals 10 5 kW out put d to confirm 3...

Page 30: ...2 or the O2 concentration is at least 20 6 If actual CO2 values are higher or O2 values are lower then pressure test the flue pipe with a static pressure of 200 Pa Draining the heating system Please...

Page 31: ...K d press simultaneously for at least 2 s a b press until Valve in mid dle pos is displayed 2 Wait until the valve has moved into its central position approx 5 s then switch OFF the main ON OFF switc...

Page 32: ...valve and safeguard against reopening 3 Release and remove cover plate H 4 Release control unit E and pivot downwards 5 Unscrew combustion chamber frame G 6 Unscrew combustion chamber cover F 7 Pull p...

Page 33: ...screws A and remove burner C 11 Clean the burner if required with compressed air or with a soapy solution Flush with clean water Note Remove the ignition and monitor ing electrodes when cleaning with...

Page 34: ...plug in connector clip A from the connecting pipe and release fitting D 3 Pull flue gas heat exchanger E forward to remove 4 Clean the flue gas heat exchanger if required with compressed air or with a...

Page 35: ...ean the ignition electrodes with a small brush or emery paper 3 Check the electrode gaps Replace the electrodes if the gaps are not as specified or the electro des are damaged Tighten the elec trode f...

Page 36: ...drain the system 2 Undo Allen screws A 3 Remove flow switch B and the flow limiter downwards 4 Check flow limiter C and replace it in case of excessive scaling or damage 5 Reinstall flow limiter C an...

Page 37: ...ressure at test port C and recharge if required 4 Secure lid B and push the leads onto air pressure switch A Checking all gas equipment for soundness at operating pres sure Danger Escaping gas leads t...

Page 38: ...Select the lower rated output Constant temperature control unit K d press simultaneously 1 is shown Weather compensated control unit K d press simultaneously Relay test and then Base load is shown 4...

Page 39: ...on tent Enter actual values into the service report 8 Press d Operation with the upper rated out put is terminated Maintain limits to EN 483 and EN 297 CO content 1000 ppm If the actual value falls ou...

Page 40: ...it K d press simultaneously Relay test and then Base load is shown a press Full load is shown 3 Ionisation current when the flame is first established min 4 A Steps in case the ionisation current is 4...

Page 41: ...the following diagrams For coding steps see page 53 System version 1 One heating circuit without mixer A1 KW Cold water WW DHW A Vitopend 200 W Outside temperature sensor only for weather compen sate...

Page 42: ...control units B Temperature limiter for limiting the maximum temperature of underfloor heating systems C Extension kit for one heating cir cuit with mixer M2 M2 Flow temperature sensor s M2 Heating ci...

Page 43: ...re sensor only for weather compen sated control units s Heating circuit pump for one heating circuit without mixer connection via internal extension B Temperature limiter for limiting the maximum temp...

Page 44: ...Ligien Str 8 D 63073 Offenbach M Required coding Operation with LPG 1E 1 Internal extension accessories 53 2 System version 4 One heating circuit without mixer A1 one heating circuit with mixer M2 an...

Page 45: ...r Flow temperature sensor for low loss header Required coding Operation with LPG 1E 1 Internal extension accessories 53 2 Adjusting the heating curves only for weather compensated control units The he...

Page 46: ...floor heating systems B Heating curve slope for low tem perature heating systems according to the Energy Savings Order Germany Further details regarding the individual steps cont 46 Commissioning insp...

Page 47: ...f the heating curve 1 Slope Change with coding address d3 in code 1 Setting range 2 to 35 equals slope 0 2 to 3 5 2 Level Change with coding address d4 in code 1 Setting range 13 to 40 K Further detai...

Page 48: ...ith rotary selector ts The value will be automatically accepted after approx 2 s Accordingly the heating curve is adjusted along set room tempera ture axis C which results in modi fied start stop char...

Page 49: ...ther functions via code 2 see the following table Note In the same LON system the same number cannot be allocated twice Only one Vitotronic may be programmed as fault manager Boiler control unit Vitot...

Page 50: ...the following keys 1 L d simultaneously for approx 2 s Subscriber check initiated see page 50 2 e The subscriber list is updated after approx 2 min The subscriber check is completed Carrying out a su...

Page 51: ...and the operating instructions to the system user and instruct him her in the operation of the system Scanning and resetting the Service display The red fault indicator flashes when the limits set via...

Page 52: ...n guishes Note If coding address 24 is not reset the Service message reappears On a constant temperature con trol unit After 24 hours On a weather compensated con trol unit At 07 00 h on Monday 2 Rese...

Page 53: ...simultaneously for approx 2 s 2 a b for the required coding address the address flashes 3 d to confirm 4 a b for the selected value 5 d to confirm the display briefly shows accepted weather compensate...

Page 54: ...e from 1 to 99 1 4 Boiler 5 Cascade 10 Vitotronic 200 H 99 Vitocom Note Allocate each number only once Summer econ A1 A5 5 With heating circuit pump logic function only for weather com pensated contro...

Page 55: ...ant due to the system equipment level or the set ting of other codes will not be dis played Press the following keys 1 L G simultaneously for approx 2 s 2 d to confirm 3 a b for the required coding ad...

Page 56: ...e delivered condition Possible change System design 00 2 System version 1 3 1 heating circuit without mixer A1 with DHW heating 00 4 1 heating circuit with mixer M2 with DHW heating 00 6 System versio...

Page 57: ...disabled 2F 1 Venting program enabled 2F 2 Fill program enabled 32 0 Influence of the signal External blocking on the circulation pumps All pumps in control function 32 1 to 32 15 Influence of the si...

Page 58: ...tion pump Heating circuit pump Heating circuit without mixer Heating circuit pump Heating circuit with mixer 0 Control funct Control funct Control funct 1 Control funct Control funct Control funct 2 C...

Page 59: ...emperature sensor for low loss head er automatic recognition 53 1 No function 53 0 Function relay 2 Central fault 53 2 Function relay 2 External heating circuit pump heating circuit A1 53 3 No functio...

Page 60: ...b 0 Do not transmit time 7F 1 Detached house only for weather compen sated control units 7F 0 Apartment block Separate adjustment of holiday program and time program for DHW heat ing as option 80 1 A...

Page 61: ...heating circuit without mixer and the heating cir cuit with mixer 95 0 Without Vitocom 100 communication inter face 95 1 With Vitocom 100 com munication interface automatic recognition 97 0 With LON...

Page 62: ...ircuit mixer circuit A0 0 Without remote control only for weather com pensated control units A0 1 With Vitotrol 200 auto matic recognition A0 2 With Vitotrol 300 auto matic recognition A3 2 Outside te...

Page 63: ...regarding coding address A3 A5 5 With heating circuit pump logic function economy circuit Heat ing circuit pump OFF when the outside tem perature AT is 1 K higher than the set room temperature RTset...

Page 64: ...ched OFF and the mixer closed at a variable value adjustable be tween 5 and 35 C plus 1 C This value is based on the adjusted outside temperature comprising the actual outside tem perature and a time...

Page 65: ...ng mode reduced operating mode weath er compensated only for weather compen sated control units change the coding only for the heating circuit with mixer M2 b0 1 Heating mode weather compensated Reduc...

Page 66: ...actual RTset 6 RTactual RTset RTactual RTset 1 K 7 RTactual RTset 1 K RTactual RTset 2 K 8 RTactual RTset 2 K RTactual RTset 3 K Coding in the delivered condition Possible change Boiler circuit mixer...

Page 67: ...ather compensated control units E1 0 Set day temperature ad justable from 3 to 23 C E1 2 Set day temperature ad justable from 17 to 37 C E2 50 With remote control No display correction for the actual...

Page 68: ...mperature mode only for weather compensated control units E9 0 to E9 100 Speed adjustable from 0 to 100 of the maximum speed during operation with reduced room tem perature Mixer circuit F1 0 Screed d...

Page 69: ...er day for 10 min respec tively F7 25 In Standby mode the internal circulation pump is permanently ON only for constant temperature control units F7 0 In Standby mode the internal circulation pump is...

Page 70: ...mperature rise adjusta ble from 0 to 50 Fb 30 Duration for raising the set boiler water tem perature or the set flow temperature see cod ing address FA 60 min See example on page 110 only for weather...

Page 71: ...Fault history Press G and d simulta neously for approx 2 s Press d 81 Subscriber check in con junction with LON sys tem Press L and d simulta neously for approx 2 s Press L and d si multaneous ly 50...

Page 72: ...g unit 1 0 Software version Burner control unit External extension software version 0 no exter nal exten sion 0 E 0 no ex ternal de mand 1 external demand 0 no exter nal block ing 1 external blocking...

Page 73: ...lope A1 level A1 Slope M2 level M2 Outside temp adj Outside temp actual The adjusted outside temperature can be reset to the actual outside temperature with e Boiler temp set Boiler temp actual DHW te...

Page 74: ...on Burner control unit Type Burner control unit Equipment type 5 0 no ex ternal de mand 1 exter nal de mand 0 no ex ternal blocking 1 exter nal blocking 0 External 0 to 10 V hook up Display in 0 no ex...

Page 75: ...aneously for approx 2 s 2 a b for the required relay out put 3 d Relay test is completed The following relay outputs can be controlled subject to system design Display screen Explanation 1 Burner modu...

Page 76: ...o DHW mode Heating circuit pump M2 On Mixer extension Mixer OPEN Mixer extension Mixer CLOSE Mixer extension Output int ON Output sK internal extension Heating circuit pump A1 ON External extension H1...

Page 77: ...Participant no Encoded user no in the LON system Holiday program If a holiday program has been entered Departure date Date Return date Date Outdoor temp C Actual value Boiler temp C Actual value Suppl...

Page 78: ...talled Centr fault ind Off On If an external extension is installed Mix valve open closed If an extension kit for one heating circuit with mixer is installed Various languages The respective languages...

Page 79: ...temperature control unit In case of faults the fault code and fault symbol flashes on the program ming unit display Weather compensated control unit The display flashes Fault if a fault message is iss...

Page 80: ...s 2 d All fault messages are acknowledged simulta neously the fault display will be deleted and the red fault indicator continues to flash Weather compensated control unit Press the following keys 1 c...

Page 81: ...char acteristics Cause Measures 0F X X Control mode Service Service the equip ment After the service set cod ing address 24 0 10 X Regulates as if the outside temperature was 0 C Outside tem perature...

Page 82: ...water tempera ture sensor see page 91 40 X Mixer closes Heating cir cuit with mixer M2 flow tem perature sensor shorted out Check flow tem perature sensor 48 X Mixer closes Heating cir cuit M2 flow t...

Page 83: ...ernal fault Replace the con trol unit b7 X X Burner blocked Boiler coding card fault Plug in boiler cod ing card or re place if faulty bA X Mixer regu lates to 20 C flow tempera ture Communica tion fa...

Page 84: ...ch set tings in the pump wiring chamber Switch 1 OFF Switch 2 ON C7 X X Control mode max pump speed Communica tion fault ex ternal vari able speed heating cir cuit pump heating circuit A1 Check coding...

Page 85: ...t A1 lead broken Check the room temperature sen sor heating cir cuit A1 and the remote control DIP switch set tings see page 111 dE X Control mode without room influence Room tem perature sensor heat...

Page 86: ...esent at burner start Check the ionisa tion electrode and connecting cable press E RESET F4 X X Burner in a fault state No flame sig nal Check the ionisa tion electrode ignition ignition module igniti...

Page 87: ...state The fuel valve closes too late Check the gas train and both control paths press E RESET F9 X X Burner in a fault state Fan speed too low dur ing burner start Check the fan fan connecting cables...

Page 88: ...re place control unit if the fault is not removed FE X X Burner blocked or in a fault state Strong inter ference EMC field nearby or faulty main PCB Start the equip ment again Re place the control uni...

Page 89: ...turn K Heating flow H DHW 1 Shut off and drain the boiler on its heating water and DHW side 2 Release side closures and pivot control unit A forward 3 Pull the leads from comfort sensor B 4 Remove the...

Page 90: ...heating return G flushing system for plate type heat exchanger see pri celist 8 Lubricate the new gaskets seals Install in reverse order with new gaskets Checking the outside temperature sensor weath...

Page 91: ...mmediately at the sen sor 4 Subject to result replace the lead or the outside temperature sensor Checking the boiler water temperature sensor comfort sen sor or flow temperature sensor for the low los...

Page 92: ...Flow temperature sensor Pull plug X3 from the control unit and check the resistance across terminals X3 4 and X3 5 2 Compare the actual sensor resis tance with the curve 3 Replace the sensor in case...

Page 93: ...re sensor 2 Check the sensor resistance and compare it with the curve 3 Replace the sensor in case of severe deviation Danger The outlet temperature sen sor is immersed in the DHW risk of scalding Dra...

Page 94: ...display E A Temperature limiter 1 Pull the leads from the temperature limiter 2 Check the continuity of the tem perature limiter with a multimeter 3 Remove the faulty temperature lim iter 4 Coat the...

Page 95: ...wiring diagram Extension kit for heating circuit with mixer Checking the rotational direction of the mixer motor 1 Switch ON OFF switch A at the extension kit first OFF and then ON again The device wi...

Page 96: ...the mixer set is incorrectly fitted Mixer installation instruc tions Changing the rotational direction of the mixer motor if required Danger An electric shock can be life threatening Before opening t...

Page 97: ...ion Switch position II for central heat ing return from the right Checking the Vitotronic 200 H accessories The Vitotronic 200 H is connected to the control unit via the LON cable To test the connecti...

Page 98: ...ting and DHW Comfort mode b a Setting values d Confirmation c Information e Standard settings Reset Heating mode The set boiler water temperature will be maintained in the Heating and DHW program if a...

Page 99: ...ptor accessory and Vitosoft accessory D ON indicator green E Reset button F User interface G Rotary selector for standard room temperature H ON OFF switch Keys at the user interface A Central heating...

Page 100: ...peratures the burner control unit calculates the modulation level and regulates the burner accordingly The electronic temperature limiter inside the burner control unit limits the boiler water tempera...

Page 101: ...nnected to relay output sK The function is allocated via coding address 53 Central fault message coding address 53 0 Heating circuit pump for heating cir cuit without mixer coding address 53 2 An exte...

Page 102: ...d to relay output sK The function is allocated via coding address 53 Central fault message coding address 53 0 Heating circuit pump for heating cir cuit without mixer coding address 53 2 An extractor...

Page 103: ...eating circuit without mixer f Power supply g Central fault message aVD External blocking terminals 2 3 External demand terminals 1 2 External heating program changeover terminals 1 2 only for weather...

Page 104: ...ension A ON OFF switch on site f Power supply aVD External blocking terminals 2 3 External demand terminals 1 2 External heating program changeover terminals 1 2 only for weather compen sated operatio...

Page 105: ...gram changes over in cod ing address D5 Heating program changeover Coding Changeover towards Permanently reduced or Perma nent standby mode subject to the selected set value d5 0 Changeover towards Co...

Page 106: ...ely switched ON and OFF for 30 s respec tively over a period of 20 min For a certain period the diverter valve is alternately set towards heating and DHW heating The burner is switched OFF during the...

Page 107: ...ON and the flow temperature will be held at the selected profile After completion 30 days the mixer circuit will again be regulated automatically via the set parameters Observe EN 1264 The report to...

Page 108: ...profile 2 ZV parquet and flooring technology code F1 2 Temperature profile 3 Code F1 3 Temperature profile 4 Code F1 4 Temperature profile 5 Code F1 5 Control functions cont 108 Function description...

Page 109: ...utomatically raised subject to the outside tempera ture The temperature is raised in accordance with the selected heating curve but no higher than the set stan dard room temperature The outside temper...

Page 110: ...uced room temperature to operation with standard room tem perature the boiler water or flow tem perature will be raised in accordance with the selected heating curve The boiler water or flow temperatu...

Page 111: ...ng curve C Set boiler water or flow tempera ture in accordance with coding address FA 50 C 20 60 C D Duration of operation with raised set boiler water or flow tempera ture in accordance with coding a...

Page 112: ...l affects the heating circuit without mixer A1 The remote control affects the heating circuit with mixer M2 When connecting a separate room temperature sensor set DIP switch 3 to ON Remote control DIP...

Page 113: ...Connection and wiring diagram internal connections 113 Designs 5592 817 GB Service...

Page 114: ...ion electrode d Stepper motor for diverter valve fJ Thermocouple gF Ignition unit a Fan motor for burner a A Fan control aYS Gas pressure switch aCA Air pressure switch aVL Flow switch a Modulation co...

Page 115: ...A1 Main PCB A2 Power supply unit A3 Optolink A4 Burner control unit A5 Programming unit A6 Coding card Connection and wiring diagram external connections 115 Designs 5592 817 GB Service...

Page 116: ...set button Outside temperature sensor Flow temperature sensor low loss header Comfort sensor s Internal circulation pump dG Gas solenoid valve f Power supply lH Power supply accessories and Vitotrol 1...

Page 117: ...nut 031 Push on connector adaptor 032 Connection hoses 033 Cable clip 034 Mounting bracket closure 035 Rear panel lid gasket 036 Rear panel lid with gasket 037 Compensation hose 038 Gas manifold natur...

Page 118: ...nversion kit for natural gas E to LPG 057 Conversion kit for LPG to natural gas E 058 Installation and service instruc tions 097 Cable harness X8 X9 auxiliary earth 099 Linear stepper motor connecting...

Page 119: ...Parts lists cont 119 Parts lists 5592 817 GB Service...

Page 120: ...Parts lists cont 120 Parts lists 5592 817 GB...

Page 121: ...Parts lists cont 121 Parts lists 5592 817 GB Service...

Page 122: ...Parts lists cont 122 Parts lists 5592 817 GB...

Page 123: ...4 25 mbar for LPG mbar 42 5 57 5 mbar Tick gas type Carbon dioxide con tent CO2 at lower rated output vol at upper rated output vol Oxygen content O2 at lower rated output vol at upper rated output v...

Page 124: ...tive to the max load Natural gas E m3 h 1 28 1 34 1 45 1 78 2 13 2 48 2 82 3 39 l min 21 22 24 30 36 41 47 56 Natural gas LL m3 h 1 49 1 56 1 69 2 07 2 48 2 88 3 28 3 94 l min 25 26 28 35 41 48 55 66...

Page 125: ...al heating kW 10 5 29 Efficiency at 100 of rated output 91 3 30 of rated output 91 8 Standby loss qB 70 1 1 2 Power consumption 1 at 100 of rated output W 270 30 of rated output W 132 Specification co...

Page 126: ...89 336 EEC 92 42 EEC This product complies with the requirements of the Efficiency Directive 92 42 EEC for Low temperature boilers LT The product characteristics determined as system values for the p...

Page 127: ...nts 98 99 E Electrode 35 Emissions test 38 Extension 101 Extension kit for heating circuit with mixer 95 Extension external H1 103 external H2 104 internal H1 101 internal H2 102 External blocking 106...

Page 128: ...ature raising 109 Reducing the heat up output 109 Reducing the heat up time 110 Relay test 75 Remote control 111 Repairs 89 Reports 123 Resetting codes 70 Room temperature adjustment 48 Rotational dir...

Page 129: ...U Upper rated output 27 39 V Venting program 106 Vitocom 300 49 Vitotronic 200 H 49 Vitotronic 200 H 97 W Wiring diagram 113 Keyword index cont 129 Keyword index 5592 817 GB...

Page 130: ...130 5592 817 GB...

Page 131: ...131 5592 817 GB...

Page 132: ...entally friendly chlorine free bleached paper 5592 817 GB Subject to technical modifications Viessmann Werke GmbH Co KG D 35107 Allendorf Telephone 49 6452 70 0 Fax 49 6452 70 2780 www viessmann com V...

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