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Operating the fuel cell module

The fuel cell module is switched on to produce electric-
ity according to the heat-up condition of the connected
DHW cylinder and the energy manager defaults. The
heating energy generated during operation is directed
to the relevant cylinder.
If the energy manager is enabled, the fuel cell module
starts to best meet the power demand. Start times will
depend, among other things, on the consumption pat-
tern in the household mains.

If the energy manager is disabled, the fuel cell module
starts solely on the basis of heat demand.
After operation, the regeneration phase of the fuel cell
module starts.
The fuel cell module process allows an operating
period of 45.5 h per start.

If the maximum return temperature on the fuel cell
module has been reached, the module shuts down.

Electrical output of the fuel cell

Electrical output is influenced by the gas quality and
the geodetic head. Electrical output is also reduced by
a decrease in the fuel cell's electrical efficiency over
time.

Vitovalor PA2 is operated with constant heat input (gas
input) and constant overall efficiency. This means that
the ratio of electrical output to thermal output changes
over the service life. As the overall output remains con-
stant, electrical output decreases over the service life
while thermal output increases.

Function description

Control unit

5839343

Functions

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Содержание E00T

Страница 1: ...Installation and service instructions for contractors VIESMANN Vitovalor PA2 Type E00T Micro CHP unit on fuel cell basis 0 75 kW Pel Natural gas version VITOVALOR PA2 5839343 GB 10 2019 Please keep safe ...

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

Страница 3: ...ase note Repairing components that fulfil a safety function can compromise the safe operation of the system Replace faulty components only with genuine Viessmann spare parts Auxiliary components spare and wearing parts Please note Spare and wearing parts that have not been tested together with the system can compromise its func tion Installing non authorised com ponents and making non approved mod...

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

Страница 5: ...nces that exhausts air to the outside can result in life threatening poisoning due to a reverse flow of flue gas Fit an interlock circuit or take suita ble steps to ensure an adequate supply of combustion air Safety instructions Safety instructions cont 5839343 ...

Страница 6: ...s 26 Aligning the heat generator at the installation site 27 Balanced flue connection 27 Connecting the downstream balanced flue pipe 27 Connecting the Vitovalor and Vitodens to a shared flue system 28 Condensate connection 29 Gas connection 29 Opening the wiring chamber 30 HMU heat management unit electrical connections 30 Overview of electrical connections 30 Routing connecting cables leads 31 C...

Страница 7: ...fault messages 67 Service messages 72 Warnings 74 Repairs 75 Moving the programming unit to the service position 75 Draining the system on the heating water side 76 Checking the temperature sensors 77 Checking the plate heat exchanger system separation 79 Information on replacing the HMU heat management unit 80 Replacing the power cable 80 Replacing the HMI connecting cable 80 Mains distributor bo...

Страница 8: ...8 14 Keyword index 95 Index Index cont 5839343 ...

Страница 9: ...dentified as follows Symbol Meaning Steps required during commissioning Not required during commissioning Steps required during inspection Not required during inspection Steps required during maintenance Not required during maintenance Intended use The appliance is only intended to be installed and operated in sealed unvented heating systems that comply with EN 12828 with due attention paid to the...

Страница 10: ...it by the integral high efficiency circulation pump Depending on the system configuration the heating water can be used for cen tral heating and or for DHW heating Control unit The Vitovalor PA2 is suitable for heat biased and power optimised operation By means of the integrated energy manager the fuel cell can be operated in a manner optimised for own consumption Cylinder A range of cylinders can...

Страница 11: ...11 Spare parts lists Information about spare parts can be found on the Viessmann spare parts app Information Product information cont 5839343 Information ...

Страница 12: ... can cause damage to the outside panels of the appliance Never apply loads weight to the top front or side panels of the appliance Please note Prevent damage to the appliance during han dling Never set the appliance down on its front or sides or apply any load to these surfaces Siting Installation room requirements Required room height At least 1800 mm Ensure there is sufficient space next to the ...

Страница 13: ...ry fall B The balanced flue bend can be positioned to the left or right C Wiring area Note Ensure there is sufficient space next to the appliance for the condensate drain pipe All height dimensions have a tolerance of 15 mm on account of the adjustable feet Preparing for installation Siting cont 5839343 Installation ...

Страница 14: ...by means of an emergency stop switch for the heating system can dam age the appliance Never connect the fuel cell module to any emergency stop switch that may have been fitted in conjunction with an existing heating system Cables for accessories Use flexible cables with the required number of cores for external connections Notes on connecting to the mains supply Vitovalor PA2 in mains parallel mod...

Страница 15: ...ering generated power A net AC meter Z2 is integrated into the Vitovalor PA2 This meter captures total electrical power generated minus that consumed by the Vitovalor PA2 itself This meter is MID calibrated and is licensed for statements to DIN VDE AR N 4105 2011 08 and the combined heat and power act KWKG Germany The calibration of the integral meter is valid for 8 years After expiry of this time...

Страница 16: ...al meter Z2 Export meter standard delivery on Vitovalor PA2 Arrangement of excess export system when con nected into a mains low voltage LV distribution board RCD RCD kWh Z1 L AC 400V 230V M K H kWh Z2 1 F G E kWh S1 O N B C A D Fig 5 A Vitovalor PA2 B Fuel cell module ON OFF switch C Control unit ON OFF switch D Control unit E Internal circulation pump F Internal consumers G GS protection H Meter...

Страница 17: ...mer G Power distribution H On site consumers K Short circuit protection L Overload protection RCD M Vitovalor PA2 N GS protection O Inverter DC AC converter SEMAX 0 75 kVA P Fuel cell stack S1 Bidirectional energy management meter not rele vant for billing by the grid operator Z1 Balancing bidirectional meter observe meter cir cuit Z2 Export meter standard delivery on Vitovalor PA2 Preparing for i...

Страница 18: ...ction L Overload protection RCD M Vitovalor PA2 N GS protection O Inverter DC AC converter SEMAX 0 75 kVA P Fuel cell stack U Power storage system inverter V Power storage unit S1 Bidirectional power storage management meter power storage system standard delivery S2 Bidirectional energy management meter not rele vant for billing by the grid operator Z1 Balancing bidirectional meter observe meter c...

Страница 19: ...tion box D Property boundary E Grid operator F Customer G Power distribution H On site consumers K Short circuit protection L Overload protection RCD M Vitovalor PA2 N GS protection O Inverter DC AC converter SEMAX 0 75 kVA P Fuel cell stack R GS protection for photovoltaic system S Photovoltaic inverter T Photovoltaic system S1 Bidirectional energy management meter optional not relevant to billin...

Страница 20: ... and drawing Z2 Export meter for photovoltaic system power gener ation Z3 Export meter for power generation by Vitovalor PA2 standard delivery with Vitovalor PA2 Z4 Export meter for Vitovalor PA2 alone Preparing for installation Notes on connecting to the mains supply cont 5839343 Installation ...

Страница 21: ...PE kWh S1 U V kWh S2 kWh Fig 9 A Low voltage grid B Main power supply C Domestic distribution box D Property boundary E Grid operator F Customer G Power distribution H On site consumers K Short circuit protection L Overload protection RCD M Vitovalor PA2 N GS protection O Inverter DC AC converter SEMAX 0 75 kVA P Fuel cell stack Preparing for installation Notes on connecting to the mains supply co...

Страница 22: ...idual current device RCD may also be required We recommend installing an AC DC sensitive RCD RCD class B for DC fault currents that can occur with energy efficient equipment The Vitovalor PA2 must not be installed in the same final consumer circuit as other consumers Please note Switching off by means of an emergency stop switch for the heating system can damage the appliance Remove any emergency ...

Страница 23: ...CD F used to protect the Vitovalor PA2 Adjust the response times of both RCDs connected in series in such a way that the disconnection time of RCD F is less than the shortest disconnection time for RCD A These two conditions ensure that RCD F of the Vitovalor PA2 responds earlier than upstream RCD A l in A t in s A F Fig 11 Response characteristics of the residual cur rent devices Preparing for in...

Страница 24: ...g flow R 1 Remove the sealing plug 2 Fit the connection set Note Gasket colours Gas connection White Connections on the heating water side Green 3 Depending on the position of the on site mains connection route the cable connected to the mains distributor box sideways out of the appliance Installation sequence Installing and aligning the Vitovalor PA2 5839343 Installation ...

Страница 25: ...e front panels 2 4 3 7 6 9 5 8 1 Fig 13 Note Hook in the programming unit mounting bracket in the service position See page 40 Installation sequence Installing and aligning the Vitovalor PA2 cont 5839343 Installation ...

Страница 26: ...Fig 14 Please note Bends in the condensate hoses impede draining of the condensate Pull the condensate hoses out of the appliance far enough to prevent bends inside the appli ance Note Connecting hoses to the on site waste water pipe See page 29 Installation sequence Installing and aligning the Vitovalor PA2 cont 5839343 Installation ...

Страница 27: ...il the following conditions are met Free passage through the flue gas pipes Flue system with positive pressure is gas tight Inspection port covers checked for secure and tight seating Apertures for ensuring sufficient combustion air sup ply are open and cannot be closed off Applicable regulations on installing and commission ing flue systems have been followed Danger Leaking or blocked flue system...

Страница 28: ...B are connected to a shared flue system fit a back draught safety device in every Vitodens Note Back draught safety device in standard delivery of flue gas cascade accessories Installing the back draught safety device Installation instructions Diaphragm back draught safety device In conjunction with Vitodens 200 W type B2HA The factory fitted coding card must be replaced with the coding card suppl...

Страница 29: ... the line to the heat generator Danger Uncontrolled escape of desulphurised odourless natural gas can result in breathing difficulties and asphyxiation Ensure adequate ventilation in enclosed spaces Note Only use suitable and approved leak detection agents EN 14291 and devices for the tightness test Leak detection agents with unsuitable constit uents e g nitrides sulphides can cause material damag...

Страница 30: ...r to commencing any work touch earthed objects such as heating or water pipes to dis charge static loads HMU heat management unit electrical connections Overview of electrical connections P2 96 74 5 1 91 91 40 156 156 P1 A B Fig 20 Installation sequence Opening the wiring chamber 5839343 Installation ...

Страница 31: ... come into contact with hot components they will be damaged When routing and securing cables leads on site ensure that the maximum permissible tempera ture for these is not exceeded Checking the CAN bus terminator switch setting 1 91 91 ON A Fig 21 Switch A at the HMU heat management unit must be set to I If the Vitovalor PA2 is integrated in a CAN bus system and is located at the beginning or end...

Страница 32: ... system return temperature sensor TS2 System return temperature sensor TS3 Cylinder temperature sensor middle jF PlusBus Please note Electronic assemblies can be damaged by elec trostatic discharge Prior to commencing any work touch earthed objects such as heating or water pipes to dis charge static loads Note Apply strain relief to on site cables Seal any unnecessary apertures with cable grommets...

Страница 33: ...ystem return temperature sensor TS3 Cylinder temperature sensor middle Cylinder temperature sensor gas condensing system boiler Cylinder temperature sensor middle bottom Vitovalor PA2 gS 3 way mixing valve A Return to cylinder red B Return to heat generator blue C Return from heating circuits red blue Further system examples www viessmann schemes com Installation sequence Electrical connections fo...

Страница 34: ...nnection to the heat generator with an external plug for the BUS connection disconnect plug jF and connect the wires directly Rotary switch S1 for subscriber number addressing Note The rotary switch is on the PCB of the EM MX mixer extension kit Fig 25 Set rotary switch S1 to 1 Installation sequence Electrical connections for EM MX mixer cont 5839343 Installation ...

Страница 35: ... the system power supply for the selected operating mode and with appropriate protection See chapter Preparing for installation on page 14 Select cable cross sections in accordance with applicable VDE IEE or local regulations Ensure the low resistance of the earth connection Danger Incorrectly executed electrical installations can result in injuries from electrical current and damage to the applia...

Страница 36: ...Danger The absence of system component earthing can lead to serious injury from electric current if an electrical fault occurs The appliance and pipework must be connected to the equipotential bonding of the building Note If fault messages are displayed See page 67 Closing the wiring chamber 2 2x 1 3 Fig 27 Installation sequence System power supply cont 5839343 Installation ...

Страница 37: ...37 5 4 1 3 2 Fig 28 Fitting the programming unit A Fig 29 Light bar light guide A faces downward Installation sequence Fitting the front panels 5839343 Installation ...

Страница 38: ...8 If required for easier handling the weight of the Vitovalor PA2 can be reduced For this remove the side panels 4 4x 3 4x 5 2 1 Fig 30 Installation sequence Removing the side panels 5839343 Installation ...

Страница 39: ...ter and starting the system 49 15 Terminating maintenance mode and activating energy manager 50 16 Checking the balanced flue system for tightness annular gap test 51 17 5 yearly maintenance of fuel cell module 52 18 10 yearly maintenance of fuel cell module 53 19 Checking the diaphragm expansion vessel and pressure in the system separation circuit 54 20 Check the external diaphragm expansion vess...

Страница 40: ...For commissioning and maintenance the program ming unit can be moved to hang on the appliance in the service position Do not disconnect the connection cable 2 1 2x 4 3 Fig 31 Checking the power supply Commissioning inspection maintenance Removing the front panels 5839343 ...

Страница 41: ...ease note Only commission the appliance with a fully filled trap Check that the trap has been filled with water Commissioning assistant Fig 33 1 If the device has not been switched on yet Switch the ON OFF switch to ON The commissioning assistant starts automati cally If the device has already been switched on See chapter Calling up the commissioning assistant at a later point 2 Select Language Co...

Страница 42: ...are shown on the display 7 After checking them acknowledge the safety instructions with 8 Confirm Do you want to finish the start up with Calling up the commissioning assistant at a later point If you need to continue commissioning later the com missioning assistant can be reactivated at any time Tap the following buttons 1 2 Service 3 Enter password viservice 4 Commissioning 5 to confirm Switchin...

Страница 43: ...dded to the fill or top up water D B C E F G A H K Fig 35 Note The two fittings with fill valve B and drain valve C can be turned 01 Remove the top front panel and the programming unit mounting bracket See page 25 02 Open the wiring chamber See page 30 03 Close gas shut off valve A 04 Undo the screw cap from fill valve B and connect the fill hose 05 Open the fill valve by turning the top of fittin...

Страница 44: ...t pump running during the flushing process 16 If there is still air in the system separation circuit or the filling pressure is below 1 9 bar 0 19 MPa repeat steps 8 to 15 17 Close drain valve E and fill valve D at the top of the fitting Remove the drain hose and fill hose Note If the threads fail to engage when closing push the connections slightly downwards when closing 18 Fit the screw caps of ...

Страница 45: ...ws on the two quick action air vent valves are open heating water buffer cylinder and heating return 02 Check whether gas shut off valve A is closed 03 Check whether shut off valves C and G on the heating water side are closed 04 Open shut off valves E and K on the heating water side 05 Connect the fill hose to fill valve H 06 Connect the drain hose to drain valve D and link it to a drain outlet 0...

Страница 46: ...actuator test 17 Remove the fill hose and drain hose Filling the fuel cell module trap Danger Escaping flue gas can damage your health If the peak load boiler existing boiler is to be operated before the Vitovalor PA2 has been commissioned and both appliances are connec ted to a shared flue pipe The trap on the fuel cell module must be filled The fuel cell module ON OFF switch must be switched ON ...

Страница 47: ...oftware tool See online help Please note Simultaneous commissioning via the software tool and the fuel cell module programming unit will result in the system malfunctioning Commissioning must only be carried out via one of the options given Danger Escaping flue gas can damage your health If the peak load boiler existing boiler is to be operated before the Vitovalor PA2 has been commissioned and bo...

Страница 48: ...lue E Select adjust value F No function G Power supply indicator H Fault indicator K Commissioning maintenance indicator L Power generation indicator Note The display switches off when in standard mode economy mode no input has been made for 1 min When a button is pressed the display switches back on Changing the gas type on the fuel cell module Delivered condition Gas type E Conversion is only re...

Страница 49: ...eps while you re waiting This includes for example Tightness tests Visual inspections Adjustments at the control unit Instructing the system user During these additional steps watch the filling process on the display and continue with it A B C Fig 40 01 Remove the cover of filling aperture A 02 Remove the closure of vent aperture C 03 Undo funnel B and push it onto filling aperture A 04 Turn on th...

Страница 50: ...rred during the commissioning process if the display alternately shows End and n1 n2 or n3 For explanations see the fol lowing table Find the cause of the fault Turn the fuel cell module off and back on again using the ON OFF switch and initiate a new starting procedure If a fault recurs or the cause of the fault is unclear notify Viessmann Technical Service 19 Terminate maintenance mode if the tr...

Страница 51: ...Checking the balanced flue system for tightness annular gap test A Fig 41 A Combustion air aperture ventilation air Note The fuel cell module must be commissioned before the annular gap check can be carried out For balanced flue systems tested together with the fuel cell module there is no requirement for a tightness test overpressure test during commissioning by the flue gas inspector In this cas...

Страница 52: ...itch on maintenance mode See chapter Switching on maintenance mode Note The cooling process on the fuel cell module lasts approximately 90 min The cooling process is complete when P0 appears under ITEM 30 in STATE Danger If the wait time is not observed there is a risk of scalding and damage to the appli ance Only carry out maintenance work when the fuel cell module is cold 04 Use to select 22 05 ...

Страница 53: ...e In such a case inform Viessmann Technical Service 1 Turn on the ON OFF switch on the fuel cell mod ule 2 Use to select 33 3 Simultaneously press SET and 34 will appear on the display 4 Press and hold SET for at least 3 s _CL will appear on the display The service indicator has been reset Filling with distilled water and re starting the system See page 49 Terminating service mode and activating t...

Страница 54: ... connection D 7 Filling the system separation circuit See page 43 Note If the diaphragm expansion vessel is being replaced Only use the gasket supplied with the spare part Replacing the diaphragm expansion vessel See page 81 Check the external diaphragm expansion vessel heating circuits and the system pressure Note The expansion vessel can lose some of its charge pressure over time When the boiler...

Страница 55: ... to 20 kPa higher than the pre charge pressure of the expansion vessel Permiss operating pressure 3 bar 0 3 MPa Checking the safety valve function Checking the electrical connections for firm seating Checking gas equipment on the fuel cell module for leaks at operating pressure Danger Escaping gas leads to a risk of explosion Check gas equipment including inside the appli ance for leaks Note Only ...

Страница 56: ...flue system for unrestricted flow and leaks Fitting the front panels fuel cell module To fit the front panels See page 37 Instructing the system user The system installer should hand the operating instruc tions to the system user and instruct the user in oper ating the system This includes all components installed as accessories e g remote control units In addition the system instal ler must make ...

Страница 57: ...angeover Setting Explanations No 0 Automatic changeover disabled Yes 1 Automatic changeover enabled 912 1 Earliest day of changeover from winter to summertime Setting Explanations 25 Changeover from 02 00 h to 03 00 h occurs on the Sunday after or on this set date 1 to 31 Day of changeover adjustable from 1st to 31st of the month 912 2 Month of changeover from winter to summertime Setting Explanat...

Страница 58: ...s bill Used for gas consumption data 10 0000 5 0000 to 40 0000 Calorific value adjustable from 5 0000 to 40 0000 kWh m3 in increments of 0 0001 1504 0 Source for date and time Setting Explanations Selection of source for date and time The setting depends on the heat generator and acces sories Local 0 Factory setting The date and time are adopted from the control unit 1 Higher ranking control syste...

Страница 59: ...0 Gas price per m3 Setting Explanations Gas price per m3 0 053 Gas price in the delivered condition 0 053 0 001 to 5 0 Adjustable from 0 001 to 5 0 1411 0 Clear maintenance messages Setting Explanations Clear maintenance messages once maintenance has been performed No 0 Maintenance messages are active if present Yes 1 Clear maintenance messages once 1431 0 CO2 factor gas per kWh Setting Explanatio...

Страница 60: ...00 to 10 00 0 to 1000 g kWh 1585 0 Set system return temperature Setting Explanations Set value for buffer outlet temperature set return temperature for peak load boiler existing boiler 500 Factor in the delivered condition 50 C 100 to 900 Adjustable from 100 to 900 10 0 to 90 0 C in incre ments of 0 5 C System configuration parameters Fuel cell cont 5839343 Parameter ...

Страница 61: ...e history Service functions System log WiFi Information Reset energy statement Change passwords Commissioning Appliances detected Access point ON OFF Exit service Exit test mode Note Tap to return to Service main menu Exiting the service menu Tap the following buttons Exit service Note The system exits the service menu automatically after 30 min Changing the service password In the delivered condi...

Страница 62: ...stalled in the system Note If a called up sensor is faulty appears on the display Calling up operating data Tap the following buttons 1 2 Service 3 Enter password viservice 4 Diagnosis 5 Select the required group e g General Checking outputs actuator and sensor test Note When the actuator and sensor test is started all actua tors are initially disabled or valves moved to their cen tral position Ta...

Страница 63: ...group System separation circuit pump ON System separation circuit pump OFF Secondary circuit pump ON Secondary circuit pump OFF Buffer mixing valve OPEN Buffer mixing valve CLOSE Buffer mixing valve STOP Checking the power generated Operating instructions for Vitovalor PA2 Checking the gas consumption to reclaim fuel tax Operating instructions for Vitovalor PA2 Checking the operating condition Ope...

Страница 64: ...relay and the disconnection time of the coupling switch ITEM Meaning Set value Response time 81 AC undervoltage stage 184 V 2 5 s 83 AC overvoltage stage 1 262 2 V 1 0 s 84 AC overvoltage stage 2 237 7 V 0 5 s 85 Frequency drop stage 1 47 5 Hz 20 0 s 86 Frequency drop stage 2 47 Hz 0 5 s 87 Frequency rise 52 Hz 0 5 s 8a Islanding operation 1 0 Hz s 0 0 s 8b Nominal voltage 230 V 8c Nominal current...

Страница 65: ...cked 8 Remove the SD card Inserting the SD card and saving the fuel cell module data 1 Insert the SD card into the slot See chapter Removing the SD card If the SD card has been inserted correctly the LED on the PCB flashes 2 Use to select 04 on the programming unit 3 Press SET to confirm 4 On the programming unit use to select on 5 Press SET to confirm When the LED on the PCB goes off data recordi...

Страница 66: ...yed rectify the fault if required The subscriber number of the component depends on the rotary switch position of the corre sponding extension module The rotary switch position was set during installation To identify the affected module check the rotary switch position on the module if necessary The following is displayed Date and time of the occurrence of the fault Fault number Description of the...

Страница 67: ...ture sensor middle bottom Check middle bottom cylinder tem perature sensor See chapter Temperature sensors checking F 22 Minimum runtime prediction for fuel cell may be restricted If F 23 or F 24 are addi tionally shown the fuel cell will no longer start Short circuit cylinder tem perature sensor middle bottom Check middle bottom cylinder tem perature sensor See chapter Temperature sensors checkin...

Страница 68: ...93 02F1 Fuel cell not operating Filling with distilled water was not confirmed during commissioning Carry out fuel cell module commis sioning again F 194 02F2 Fuel cell not operating Draining of distilled water was not confirmed Drain out distilled water again and confirm draining F 195 12F0 No power generation Combustion control CO content outside tolerance range Check gas type setting correct if...

Страница 69: ...be re set on the programming unit of the fuel cell module F 198 17F0 No power generation Fault reformer burner ig nition Reset the fault once If the fault recurs notify Viessmann Technical Service F 199 19F0 No power generation Fault reformer burner ig nition Reset the fault once If the fault recurs notify Viessmann Technical Service F 200 1AF0 No power generation Combustion control CO content out...

Страница 70: ...w Gas supply interrupted Check the gas supply F 297 A9F0 No power generation Gas pressure too high Check the gas supply F 299 Wrong time Real time clock fault Set the time Check battery in HMU heat man agement unit F 303 C2F0 No power generation Fault stack voltage 1 fuel cell Check the balanced flue system for Flue gas recirculation Leaks Check ventilation air supply for Ingress of flue gas due t...

Страница 71: ... due to insuf ficient clearance from for example the flue system of a solid fuel boiler Outgassing contamination in the air supply system e g sili cones oils paints detergents deposits etc If the fault recurs contact Viessmann Technical Service Note The fault message can only be cleared on the programming unit of the fuel cell module F 341 Fuel cell in emergency mode Communication error fuel cell ...

Страница 72: ... Viessmann Technical Service F 538 Control mode Lead break system return temperature sensor Check system return temperature sensor on EM MX mixer exten sion kit See chapter Checking the system return temperature sensor F 539 Control mode Short circuit system re turn temperature sensor Check system return temperature sensor on EM MX mixer exten sion kit See chapter Checking the system return temper...

Страница 73: ...f operation Carry out decommissioning P 14 Fuel cell maintenance re quired in less than 45 days Perform maintenance P 15 Fuel cell maintenance re quired in less than 1 month Perform maintenance P 19 Fuel cell overhaul required in less than 3 months P 20 Fuel cell overhaul required in less than 2 months P 22 Fuel cell overhaul required in less than 1 month P 23 6 months until fuel cell de commissio...

Страница 74: ...n 30 days until the 5 yearly service Carry out the 5 yearly service A 7 06F0 Fuel cell module in operation 3 months until required re pair Schedule repair A 8 08F0 Fuel cell module in operation 6 months until decommis sioning after 20 years of operation Schedule decommissioning A 12 Fuel cell module in operation Real time clock battery is flat Replace battery in HMU heat man agement unit Troublesh...

Страница 75: ...g the programming unit to the service position If required for commissioning and servicing the pro gramming unit can be moved to a different position 2 1 2x 4 3 Fig 47 Troubleshooting Repairs 5839343 Diagnosis ...

Страница 76: ... necessary for repair work K M N L A E B C D G H F O P Fig 48 1 Close shut off valves B and F on the heating water side 2 Attach an on site drain hose to drain valve G and route it into a drain 3 Open shut off valve H on the heating water side Troubleshooting Repairs cont 5839343 Diagnosis ...

Страница 77: ... ON OFF switch of the fuel cell module to OFF See page 41 3 Undo the screw cap on drain valve A 4 Connect the on site drain hose and route it into a drain 5 Open the drain valve by turning the top of fitting B anti clockwise 6 Place a shallow container of sufficient size min 5 l below drain port C 7 Undo filter from drain outlet C Checking the temperature sensors For electrical connection of the t...

Страница 78: ... kΩ Fig 50 Sensor type NTC 10 kΩ 1 Disconnect plug and measure the sensor resist ance See connection and wiring diagrams from page 87 2 Compare the sensor resistance with the curve 3 In the event of severe deviation replace the sensor Troubleshooting Repairs cont 5839343 Diagnosis ...

Страница 79: ...n circuit See page 76 3 Remove the top front panel and the programming unit mounting bracket See page 25 4 Open the wiring chamber See page 30 5 Undo 2 screws A 6 Pull plate heat exchanger B towards the back and lift out upwards 7 Check the connections on the heating water side for contamination and scaling replace the plate heat exchanger if necessary 8 Install in reverse order using new gaskets ...

Страница 80: ...r cable When replacing the power cable only use the power cable available as a spare part from Viessmann Replacing the HMI connecting cable Please note Incorrect routing of the cable can lead to heat damage and impairment of the EMC properties For positioning and securing of the cable fixing point of the cable tie see connecting cable installation instructions Mains distributor box service positio...

Страница 81: ...nce 2 Draining the secondary circuit and system separa tion circuit See page 76 3 Remove the top front panel and the programming unit mounting bracket See page 25 4 Open the wiring chamber See page 30 5 Move the mains distributor box into the service position See chapter Mains distributor box service position Note Refit in reverse order Troubleshooting Repairs cont 5839343 Diagnosis ...

Страница 82: ... unit can be removed the secon dary circuit circulation pump must be removed See chapter Removing the secondary circuit circulation pump 24 Nm 1 4 2 1 5 Nm 0 5 5 6 4 2 Nm 0 2 3 Fig 54 Note Refit in reverse order Troubleshooting Repairs cont 5839343 Diagnosis ...

Страница 83: ...h S1 The rotary switch on the PCB of the extension kit defines the assignment to the relevant heating circuit On all extension kits check that a consecutive number is set on rotary switch S1 Checking the rotational direction of the mixer motor After being switched on the appliance implements a self test During this the mixer is opened and closed again Note The mixer motor can also be started via t...

Страница 84: ...0 50 70 90 110 Temperature in C 0 4 0 6 0 8 2 4 6 8 20 Resistance in kΩ Fig 57 Sensor type NTC 10 kΩ 1 Remove plug at slot TS1 on the extension kit 2 Check the sensor resistance and compare it to the curve In the event of severe deviation replace the sensor Checking the system return temperature sensor 10 1 10 30 50 70 90 110 Temperature in C 0 4 0 6 0 8 2 4 6 8 20 Resistance in kΩ Fig 58 Sensor t...

Страница 85: ...ature in C 0 4 0 6 0 8 2 4 6 8 20 Resistance in kΩ Fig 59 Sensor type NTC 10 kΩ 1 Remove plug at slot TS3 on the extension kit 2 Check the sensor resistance and compare it to the curve In the event of severe deviation replace the sensor Troubleshooting Repairs cont 5839343 Diagnosis ...

Страница 86: ...ration phase of the fuel cell module starts The fuel cell module process allows an operating period of 45 5 h per start If the maximum return temperature on the fuel cell module has been reached the module shuts down Electrical output of the fuel cell Electrical output is influenced by the gas quality and the geodetic head Electrical output is also reduced by a decrease in the fuel cell s electric...

Страница 87: ...t management unit A3 EM MX mixer extension kit ADIO electronics mod ule A4 HMI programming unit with RF module wireless module A5 Fuel cell A6 External electricity meter Connection and wiring diagrams Overview connection diagrams 5839343 Appendix ...

Страница 88: ... L N L N S0 S0 N L 2 1 2 1 3 A C D B Fig 61 A1 Mains distributor box Z1 Electricity meter A HMU heat management unit B Power supply C S0 BUS D Fuel cell Connection and wiring diagrams Mains distributor box 5839343 Appendix ...

Страница 89: ...le A9 Switching mode power supply F1 Fuse K1 K2 Relay P1sA Fuel cell circulation pump System separation circuit pump P2 No function X Electrical interfaces No function Cylinder temperature sensor middle bottom Connection and wiring diagrams HMU heat management unit connection diagram 5839343 Appendix ...

Страница 90: ...A2 PCB HMU heat management unit P1 No function P3gS 3 way mixing valve heating water buffer cyl inder PWM1 No function S1 Rotary switch TS1 Raised system return temperature sensor TS2 System return temperature sensor TS3 Cylinder temperature sensor middle F1 Fuse K1 to K3 Relay T1 Switching mode power supply X Electrical interfaces fÖ Power supply fÖA Power supply for accessories jF PlusBus Connec...

Страница 91: ...atural gas LL mbar kPa 17 4 25 1 74 2 5 Tick gas type Carbon monoxide content CO At lower heating output ppm 100 At upper heating output ppm 100 Fuel cell module Electrical output W 750 Power generated kWh Amount of gas consumed m3 Hours run h Distilled water cartridge re placed Air filter A replaced Air filter B replaced CO sensor replaced Commissioning service reports Commissioning service repor...

Страница 92: ...on power mW 10 Supply values relative to the max load Natural gas E m3 h 0 21 Natural gas LL m3 h 0 23 Protection class I Permissible ambient temperature Operation C 5 to 40 Storage and transport C 25 to 70 Product ID CE 0085CP0028 Note The supply values are only for reference e g in the gas contract application or for a supplementary rough estimate to check the volumetric settings Due to factory ...

Страница 93: ...stem are not part of ordi nary household waste For decommissioning the system isolate the system from the power supply and allow components to cool down where appropriate All components must be disposed of correctly Disposal Final decommissioning and disposal 5839343 Appendix ...

Страница 94: ... with Directive 2014 53 EU Using the serial number the full Declaration of Con formity can be found on the following website www viessmann co uk eu conformity Manufacturer s certificate according to the 1st BImSchV Germany We Viessmann Werke GmbH Co KG D 35107 Allendorf confirm that the product Vitovalor PA2 type E00T complies with the NOx limits specified by the 1st BImSchV paragraph 6 Allendorf ...

Страница 95: ...xcess export 19 21 Excess export system 16 Extension kit EM MX mixer ADIO electronics module connection diagram 90 Extension kit for heating circuit with mixer 83 F Fault codes Heat management unit HMU 67 Fault history 66 Fault messages 67 Display 66 Faults Display 66 Fill water 44 Flue gas connection 27 Flue system 28 Front panels Fitting 37 Removing 40 Fuel cell Draining 52 Gas consumption 63 Op...

Страница 96: ...module cover removing 48 Programming unit fuel cell module 48 Programming unit service position 40 Property boundary 17 18 19 21 Protective devices 22 R Relay test 62 Repairs 75 Report 91 Resetting passwords to the factory setting 62 Residual current device 23 Response characteristics 23 Response times 23 Rotational direction mixer motor Changing 84 Checking 83 S SD card insertion 65 SD card remov...

Страница 97: ...97 5839343 ...

Страница 98: ...98 5839343 ...

Страница 99: ...99 5839343 ...

Страница 100: ... 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 5839343 Subject to technical modifications ...

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