Viessmann BWT 241.A Series Installation And Service Instructions Manual Download Page 4

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Installation instructions

Use.......................................................................................................................

Requirements concerning on-site connections....................................................

Overview of possible system schemes................................................................

Markings in the system examples........................................................................ 10
System example, ID: 4605091_1102_03............................................................. 11

Installation sequence

Service instructions

Commissioning, inspection, maintenance

Steps - commissioning, inspection and maintenance.......................................... 52
Further details regarding the individual steps....................................................... 53

Troubleshooting

Repairs................................................................................................................. 67

Parts lists type BWT (400 V~)

Parts lists type BWT-M (230 V~)

Index

Index

5601 598 GB

Summary of Contents for BWT 241.A Series

Page 1: ...e instructions for contractors VIESMANN Vitocal 242 G Type BWT 241 A06 to A10 Type BWT M 241 A06 to A10 Compact heat pump 400 V and 230 V For applicability see the last page VITOCAL 242 G 5601 598 GB...

Page 2: ...working on this system National installation requirements Legal instructions regarding the pre vention of accidents Legal instructions regarding environ mental protection The Code of Practice of relev...

Page 3: ...place faulty components only with original 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...

Page 4: ...heat pump 51 Service instructions Commissioning inspection maintenance Steps commissioning inspection and maintenance 52 Further details regarding the individual steps 53 Troubleshooting Repairs 67 P...

Page 5: ...set 104 Commissioning service reports Hydraulic parameters report 106 Control parameters report 106 Specification 111 Declaration of Conformity Declaration of conformity 117 Keyword index 118 Index I...

Page 6: ...a heat ing system DHW heating with the integral DHW cylinder also through the utilisation of solar energy Any other use is considered inappropri ate Note The Vitocal 242 G is exclusively inten ded fo...

Page 7: ...387 134 159 62 D E G F A B C H K D E F G A H K 29 61 111 80 42 V 230 V 400 V A DHW B DHW circulation C Cold water D Primary circuit return heat pump brine outlet Preparing for installation Requiremen...

Page 8: ...ngth inside the appli ance plus wall clearance 2 25 m Height wall outlet 2100 mm see Technical guides for heat pumps Recommended power cables Type BWT BWT M 242 A06 242 A08 242 A10 Heat pump control u...

Page 9: ...X X M2 HC2 X X DHW cylinder X X X X Heating water buffer cylinder 0 X X Solar thermal system with integral solar control module 0 0 0 0 Cooling A1 HC1 0 0 M2 HC2 0 0 Sep cooling circuit SKK 0 0 0 0 X...

Page 10: ...F14 2 211 2 2 F0 2 211 4 94 20 2 F8 F6 F0 F8 F14 212 3 211 2 211 4 2 X3 8 3 9 2 145 A1 2 X3 8 3 9 2 1 qE qW 6 4 3 7 5 eU eQ eP oR iE oE oP oQ oW oE 2 F14 oE oE 2 H F YF F Preparing for installation Ma...

Page 11: ...hut off valves or safety equipment This does not replace the need for local engi neering Hydraulic installation scheme 43 42 44 45 P1 21 20 22 27 49 KW WW 2 X3 8 3 9 37 2 212 3 4 1 12 13 3 2 P1 X3 8 3...

Page 12: ...circuit wW Brine distributor for geothermal probes geothermal collectors wU Geothermal probe geothermal collector DHW heating eU Connection set with DHW circulation pump ZP DHW heating with a solar t...

Page 13: ...t without mixer A1 oP Radiator heating circuit oQ Vitotrol 200A remote control oZ Heating circuit pump Electrical installation scheme For an overview of the electrical connec tions and more informatio...

Page 14: ...77 73 M 1 74 76 M2 VTS M2 20 230 V 50 Hz 1 2 1 N PE NTC 20 100 W 75 2 L N HK M2 KM BUS distributor 1 3 2 1 3 2 1 3 2 1 3 2 L N N M 1 R L1 N 1 N PE 230 V 50 Hz L1 N PE R Mains terminals for compressor...

Page 15: ...ns Time program DHW circulation if a DHW circulation pump is installed Set time program see oper ating instructions DHW Enable booster heaters for DHW heating 6014 1 Enable electric heaters for DHW he...

Page 16: ...the appliance horizon tally If the adjustable feet are used to compensate for an uneven floor max 10 mm the pres sure load on the feet must be distributed evenly The total weight must be con sidered...

Page 17: ...e cylinder module can be removed see from page 18 In addition the heat pump module can be removed see page 24 Please note Prevent damage to the appliance during handling Never put weight on the top fr...

Page 18: ...18 Removing the cylinder module 3 1 5 4 2 2x Installation sequence Siting the heat pump cont 5601 598 GB...

Page 19: ...19 6 X3 sG sH lJ aYH 7 F6 F18 8 Installation sequence Siting the heat pump cont 5601 598 GB Installation...

Page 20: ...20 aCH 11 10 193C SLP N 224 6 9 Installation sequence Siting the heat pump cont 5601 598 GB...

Page 21: ...21 X20 2x 16 17 2x 12 14 18 13 15 Installation sequence Siting the heat pump cont 5601 598 GB Installation...

Page 22: ...22 4x 4x 6x 2x 22 19 21 20 Installation sequence Siting the heat pump cont 5601 598 GB...

Page 23: ...23 4x 23 2x 26 25 24 Installation sequence Siting the heat pump cont 5601 598 GB Installation...

Page 24: ...24 Removing the heat pump module 6 1 4 kK aYH sH 3 1 5 2 Installation sequence Siting the heat pump cont 5601 598 GB...

Page 25: ...4x 2x 12 11 4x aJ 10 Note on step 10 Use heat conducting paste when fitting the sensor after transporting the appli ance to its installation site Installation sequence Siting the heat pump cont 5601 5...

Page 26: ...the heat pump and cylinder modules With pipe outlets ensure dia phragm grommets C are seated correctly see diagram below Please note To prevent the formation of condensate and the exces sive developme...

Page 27: ...27 C D BB Installation sequence Siting the heat pump cont 5601 598 GB Installation...

Page 28: ...the transport brackets Please note If transport brackets are not removed they cause vibrations and excessive noise Remove the transport brackets 4 1 3 2 Installation sequence Siting the heat pump cont...

Page 29: ...th hose outlets ensure that their diaphragm grommets are seated correctly seal with seal ing tape if required see chapter Assembly and sealing faces to note 4x 4x 2 1 A B A Straight pipe sections supp...

Page 30: ...rmal and sound insulation of all pipes routed through walls 3 Connect primary pipes to heat pump 4 Insulate pipes inside the building to provide protection from heat and vapour diffusion Connecting th...

Page 31: ...cation Connections on the DHW side For connecting the DHW side observe DIN 1988 and DIN 4753 M A N B C L K D H O N H P R H M O H G F E A DHW B DHW circulation pump C Spring loaded check valve D Heat p...

Page 32: ...nder does not then need to be drained when working on the safety valve Connecting the solar circuit Connect the solar circuit on site Connecting a heating cooling circuit if required The connection is...

Page 33: ...and cables 42 V 230 V 400 V separately Strip the insulation from the cables as close to the terminals as possible and bundle tightly to the corresponding terminals Secure cables with cable ties This...

Page 34: ...ther at the terminals This ensures that in case of failure for example when detaching a wire the wires can not drift into the adjacent voltage area Strip the insulation as close to the ter minals as p...

Page 35: ...F13 F14 F0 F4 X31 X3 X2 X1 F1 6 7 8 9 F3 F16 aVG sYS sYA F D C B A 3 4 18 1 1PE N D 400 V 50 Hz 230 V 50 Hz A Expansion PCB on main PCB Installation sequence Electrical connection cont 5601 598 GB In...

Page 36: ...mp con trol unit must not exceed 1000 W e g pumps valves message facilities contactors If the total output is 1000 W the indi vidual rating of a component e g pump valve message facility contac tor ca...

Page 37: ...al 212 2 Connect temperature limiter as maxi mum temperature limiter for underfloor heating circuit if installed in series see the following chapter Connection values Output 130 W Voltage 230 V Max sw...

Page 38: ...on values Output 100 W Voltage 230 V Max switching current 4 2 A Connect on site 212 3 DHW circulation pump Connection values Output 50 W Voltage 230 V Max switching current 4 2 A Connect on site 212...

Page 39: ...ng the temperature limiter part no 7151 728 7151 729 B M 1 C B s X2 N A X1 Heating circuit without mixer A1 HC1 Connection A to control unit Circulation pump C Without heating water buffer cylin der 2...

Page 40: ...ect plug s to mixer extension kit B Temperature limiter C Heating circuit pump for heating cir cuit with mixer Expansion PCB on main PCB Make no on site connections Luster terminals Set the required p...

Page 41: ...per Floating contact required Closed Heat pump in operation Open Heat pump shut down Breaking capacity 230 V 0 15 A Connect on site remove jumper when con necting Note No parameters need to be set The...

Page 42: ...F17 on site Sensors Plug Sensor Type F0 Outside temperature sensor connect on site Ni 500 PTC F4 X5 6 X5 7 Buffer temperature sensor top connect on site Pt 500 PTC F13 System flow temperature sensor w...

Page 43: ...upply with a minimum contact separation of 3 mm We additionally recommend installing an AC DC sensitive RCD RCD class B for DC fault currents that can occur with energy efficient equip ment If no main...

Page 44: ...e cable for the power OFF signal and for the heat pump control unit power supply 3 x 1 5 mm2 in a 5 core cable The allocation of the power OFF for compressor and or instantaneous heating water heater...

Page 45: ...the compressor output see specification Low tariff and power OFF can be used No parameters need to be set when using economy tariff with power OFF facility The compressor is shut down during the powe...

Page 46: ...Jumpers Max fuse rating 16 A see specifica tion Low tariff and power OFF can be used Recommended power cable 7 x 2 5 mm2 Max cable length 25 m Power supply with power OFF Power OFF without on site lo...

Page 47: ...tact open power OFF enabled Feed TNC system H Economy tariff meter K Feed TNC system Power OFF with on site load disconnection The power OFF signal is connected to the on site contactor of the economy...

Page 48: ...ol receiver contact open power OFF enabled with backup fuse H Economy tariff meter K Feed TNC system L Mains isolator Phase monitor if installed The phase monitor is used to monitor the mains power su...

Page 49: ...display asymmetry Asy H Fault display over undervoltage U LEDs explained LED Rel illuminates green All voltages and the rotating field clockwise are healthy LED Ph illuminates red The relay has respon...

Page 50: ...low if the phase sequence is correct Does not illuminate if the phase sequence is incorrect Connecting to terminals X3 8 X3 9 After connecting the power supply one of the following components must be...

Page 51: ...densate and the excessive devel opment of noise tightly seal the shield Danger An absence of component earth ing in the system can lead to seri ous injury from electrical current if an electrical fau...

Page 52: ...ing and venting the solar circuit 56 7 Checking the expansion vessel and heating circuit pressure 57 8 Cleaning the DHW cylinder 57 9 Replacing the magnesium anode 59 10 Checking the tightness of elec...

Page 53: ...and commissioning of the appliance to prevent equip ment damage Work on the refrigerant circuit must only be carried out by quali fied personnel in accordance with Ordinances EC 842 2006 and 303 2008...

Page 54: ...nces EC 842 2006 and 303 2008 1 Check the floor area valves and all visible solder joints for traces of oil Note Traces of oil indicate a leaking refrig erant circuit Have your heat pump checked over...

Page 55: ...l of deposits and corrosion and may lead to system damage Regarding the quality and amount of heating water incl fill and top up water observe the VDI 2035 or local regula tions Thoroughly flush the e...

Page 56: ...may have become dis lodged 5 Check the system pressure and top up with water if required Minimum system pressure 0 8 bar Permiss operating pressure 3 bar Filling and venting the solar circuit Danger O...

Page 57: ...ections with a depres surised DHW cylinder Please note Negative pressure in the DHW cylinder can cause material dam age The air vent valve must always be open when draining with a vac uum pump Please...

Page 58: ...ads to corrosion damage on the DHW cylinder Before inserting the electrical cables measure the resistance between terminals A and B If the resistance is significantly less than infinity check whether...

Page 59: ...me ter settings and function checks can be carried out with or without the commis sioning assistant see following chapter and service instructions for the Vitotronic 200 heat pump control unit Note Ty...

Page 60: ...ng on the heat pump control unit progress bar appears When the unit is first commissioned the display is in German Sprache Cesky CZ Deutsch DE Dansk English DK GB W hlen mit Manually switching some ap...

Page 61: ...Start commissioning Parameter group select Language set Date time set Temperature sensors Signal inputs Actuator test Subscriber check LON Commissioning terminated Control mode OK OK OK OK OK OK OK OK...

Page 62: ...so assigned to each parameter Service menu 1 Press OK simultaneously for approx 4 s 2 Select Coding level 1 3 Select parameter group System definition 4 Select parameter System scheme 7000 5 Set syste...

Page 63: ...Time prog DHW circ Setting a time program Remote control e g Vitotrol 200A Heating circuit 1 Remote control 2003 or Heating circuit 2 Remote control 3003 or Heating circuit 3 Remote control 4003 1 Not...

Page 64: ...onents System definition System components for external changeover 7011 0 to 10 System definition Operating status for external changeover 7012 0 to 3 System definition Duration of external changeover...

Page 65: ...Cooling Cooling circuit 7101 1 heating circuit A1 2 heating circuit M2 4 separate cooling circuit Instantaneous heating water heater Parameters for instantaneous heating water heater Setting Electr b...

Page 66: ...e instantaneous heating water heater may respond Heat up the high limit safety cut out to above 20 C and press reset button A of the high limit safety cut out A Instructing the system user The system...

Page 67: ...67 Overview of electrical connections Type BWT 400 V E D G B C B B B H M N K A F aCH sG sH lJ aYH X3 kK Troubleshooting Repairs 5601 598 GB Service...

Page 68: ...Control module with power supply instantaneous heating water heater M Type BWT 241 A08 A10 Full wave soft starter N Motor overload relay sG Plug secondary pump sH Plug primary pump kK Plug compressor...

Page 69: ...69 Type BWT M 230 V aCH kK sG sH lJ aYH X3 D G B C B B B H M K A O P N E F Troubleshooting Repairs cont 5601 598 GB Service...

Page 70: ...Control module with power supply instantaneous heating water heater M Starter N Motor overload relay O Run capacitor P Start capacitor sG Plug secondary pump sH Plug primary pump kK Plug compressor l...

Page 71: ...71 Opening programming unit 2 2x 1 3 Troubleshooting Repairs cont 5601 598 GB Service...

Page 72: ...72 Removing cover from programming unit if necessary 5 4 4x Troubleshooting Repairs cont 5601 598 GB...

Page 73: ...73 Overview of internal components M K G A H D C B F 193C 5A 116 5 116 6 116 3 116 4 5 88 116 1 116 2 12 26 2 17 25 97 Troubleshooting Repairs cont 5601 598 GB Service...

Page 74: ...J 3 way diverter valve for Heating DHW aYH Connection at terminals 1 2 Klixon hot gas 3 4 Low pressure switch 5 6 Safety high pressure switch a DC Cylinder primary pump A Primary circuit air vent valv...

Page 75: ...to drain or fill the cylinder Draining the heat pump on the secondary side 1 Close the on site drain fill valve 2 Drain heat pump at secondary flow drain valve see page 73 Checking sensors For sensor...

Page 76: ...r temperature sensor F21 Flow temperature sensor secondary circuit upstream of the instantaneous heating water heater Hot gas temperature sensor Pt 500 Temperature sensors type Ni 500 400 40 20 0 Resi...

Page 77: ...is also at zero volt Removing the fuse does not switch the power circuit to zero volt Appliance too noisy Possible causes Transport bracket not removed See page 28 Shield not tightly sealed See page...

Page 78: ...uired Serial no see type plate A Assembly from this parts list Position number of the individual part within the assembly from this parts list Standard parts are available from your local dealer Parts...

Page 79: ...F A A Type plate B Assembly casing C Assembly electrical equipment D Assembly heat pump module E Assembly hydraulics F Assembly cylinder Parts lists type BWT 400 V Overview of the assemblies 5601 598...

Page 80: ...ce instructions Casing 0001 Front panel top 0002 Front panel bottom 0003 Side panel left 0004 Side panel right 0005 Top panel front 0006 Top panel back 0007 Support heat pump control unit 0008 Viessma...

Page 81: ...81 0001 0005 0006 0003 0008 0009 0010 0007 0004 0002 Parts lists type BWT 400 V Casing cont 5601 598 GB Service...

Page 82: ...Vitotronic 200 type WO1B 0046 Control module for instantaneous heating water heater 0048 Expansion PCB with cover SA135 Parts not shown 0005 PCB with connection adaptor SA136 A10 0006 PCB with connec...

Page 83: ...39 0001 0017 0015 0016 0003 0008 0002 0007 0041 0025 0046 0009 0036 0040 0031 0030 0026 0023 0024 0022 0042 0044 0043 0023 0024 0025 0026 0029 Parts lists type BWT 400 V Electrical equipment cont 5601...

Page 84: ...ntaneous heating water heater 0047 Service instructions Vitotronic 200 type WO1B 0048 Operating instructions Vitotronic 200 type WO1B Parts not shown 0005 PCB with connection adaptor SA136 A10 0006 PC...

Page 85: ...40 0001 0017 0015 0016 0003 0008 0002 0007 0042 0034 0046 0009 0041 0031 0030 0025 0024 0023 0043 0048 0047 0024 0025 0034 0022 0037 0026 0029 Parts lists type BWT 400 V Electrical equipment cont 5601...

Page 86: ...turn line 0023 Secondary return line 0024 Secondary flow line 0025 Primary return hose 0026 Primary flow line 0027 Primary flow hose 0028 Secondary return hose 0029 Line filter drier electronic expan...

Page 87: ...0021 0020 0040 0033 0027 0039 0042 0004 0031 0029 0005 0038 0039 0003 0002 0024 0039 0039 0028 0039 0016 0023 0016 0039 0006 0032 0034 0034 0035 0036 0014 0042 0014 0012 0011 0013 0042 0016 0010 0018...

Page 88: ...rommet 7 70 21 external internal 0021 Diaphragm grommet 7 54 18 external internal 0022 Flow instantaneous heating water heater 0023 Heat exchanger for primary store system 0024 Line instantaneous heat...

Page 89: ...26 0036 0028 0034 0036 0020 0017 0009 0016 0031 0007 0032 0017 0019 0018 0006 0019 0018 0036 0036 0040 0036 0034 0013 0037 0038 0035 0001 0003 0005 0002 0034 0034 0036 0036 0034 0034 0036 0035 0036 00...

Page 90: ...32 x 1 5 mm 0018 Clip for threaded pipe D 21 23 M8 EPDM insert 0019 Cap G with retaining loop 0020 Magnesium chain anode 0021 Safety equipment block 0022 Non return valve 30 mbar con nection G1 0023 S...

Page 91: ...0029 0031 0025 0034 0034 0034 0009 0028 0033 0033 0010 0032 0015 0032 0032 0032 0019 0032 0018 0033 0024 0023 0008 0028 0033 0033 0026 0026 0020 0007 0034 0022 0034 0034 0006 0032 0034 0034 0032 0027...

Page 92: ...red Serial no see type plate A Assembly from this parts list Position number of the individual part within the assembly from this parts list Standard parts are available from your local dealer Parts l...

Page 93: ...B C D E F G A A Type plate B Assembly casing C Assembly electrical equipment D Assembly heat pump module E Assembly hydraulics Parts lists type BWT M 230 V Overview of the assemblies 5601 598 GB Servi...

Page 94: ...nstallation and service instructions Casing 0001 Front panel top 0002 Front panel bottom 0003 Side panel left 0004 Side panel right 0005 Top panel front 0006 Top panel back 0007 Support heat pump cont...

Page 95: ...95 0001 0005 0006 0003 0008 0009 0010 0007 0004 0002 Parts lists type BWT M 230 V Casing cont 5601 598 GB Service...

Page 96: ...ating instructions Vitotronic 200 type WO1B 0048 Control module for instantaneous heating water heater 0052 Expansion PCB with cover SA135 Parts not shown 0005 PCB with connection adaptor SA136 A10 00...

Page 97: ...1 0017 0015 0016 0003 0008 0002 0007 0044 0028 0048 0009 0039 0043 0033 0032 0027 0026 0047 0046 0026 0027 0028 0025 0022 0024 0023 0045 0037 0031 Parts lists type BWT M 230 V Electrical equipment con...

Page 98: ...urn line 0023 Secondary return line 0024 Secondary flow line 0025 Primary return hose 0026 Primary flow line 0027 Primary flow hose 0028 Secondary return hose 0029 Line filter drier electronic expan s...

Page 99: ...021 0020 0040 0033 0027 0039 0042 0004 0031 0029 0005 0038 0039 0003 0002 0024 0039 0039 0028 0039 0016 0023 0016 0039 0006 0032 0034 0034 0035 0036 0014 0042 0014 0012 0011 0013 0042 0016 0010 0018 0...

Page 100: ...rommet 7 70 21 external internal 0021 Diaphragm grommet 7 54 18 external internal 0022 Flow instantaneous heating water heater 0023 Heat exchanger for primary store system 0024 Line instantaneous heat...

Page 101: ...6 0036 0028 0034 0036 0020 0017 0009 0016 0031 0007 0032 0017 0019 0018 0006 0019 0018 0036 0036 0040 0036 0034 0013 0037 0038 0035 0001 0003 0005 0002 0034 0034 0036 0036 0034 0034 0036 0035 0036 003...

Page 102: ...2 x 1 5 mm 0018 Clip for threaded pipe D 21 23 M8 EPDM insert 0019 Cap G with retaining loop 0020 Magnesium chain anode 0021 Safety equipment block 0022 Non return valve 30 mbar con nection G1 0023 Se...

Page 103: ...0029 0031 0025 0034 0034 0034 0009 0028 0033 0033 0010 0032 0015 0032 0032 0032 0019 0032 0018 0033 0024 0023 0008 0028 0033 0033 0026 0026 0020 0007 0034 0022 0034 0034 0006 0032 0034 0034 0032 0027...

Page 104: ...104 0001 Flange for magnesium anode 0002 Magnesium anode 0003 Flange gasket 0004 T P valve 0005 Extension R x 30 0006 Flange insulation Parts lists type BWT M 230 V Fitting set 5601 598 GB...

Page 105: ...105 0006 0005 0004 0001 0003 0002 0002 0003 Parts lists type BWT M 230 V Fitting set cont 5601 598 GB Service...

Page 106: ...10 C K 3 to 5 Secondary circuit flow temperature 35 C when primary circuit flow temperature 0 C K 2 to 4 Testing the mixer heat pump and cylinder heating Checked under the following conditions Room te...

Page 107: ...tus for external change over 7012 2 Effect of external blocking on pumps compressor 701A 0 Duration of external changeover 7013 8 h Effect of external demand on heat pump heating circuits 7014 4 Effec...

Page 108: ...der 6016 0 Start attempts for DHW after high pres sure shutdown 6017 1 Operating mode cylinder primary pump 6020 Do not adjust Solar Type solar control unit 7A00 0 Max collector temperature 7A01 1300...

Page 109: ...7208 100 10 C Heating circuit 1 Standard room temperature 2000 200 20 C Reduced room temperature 2001 160 16 C Remote control 2003 0 Heating curve level 2006 0 0 K Heating curve slope 2007 6 0 6 Infl...

Page 110: ...ture hook up cooling circuit 7104 0 Cooling curve level 7110 0 0 K Cooling curve slope 7111 12 1 2 Time Automatic changeover summertime wintertime 7C00 1 Start summertime month 7C01 3 Start summertime...

Page 111: ...ty l 2 8 3 1 3 4 Minimum flow rate at a spread of 5 K always maintain l h 820 1120 1450 Maximum external pressure drop RFH at minimum flow rate mbar 680 630 590 Max inlet temperature C 15 15 15 Min in...

Page 112: ...ower consumption control unit W 1000 1000 1000 Rated output control unit PCB W 10 10 10 Refrigerant circuit Refrigerant R410A R410A R410A Fill volume kg 1 8 1 8 2 05 Compressor type Hermetically seale...

Page 113: ...ulti connect system Sound power level Test with reference to DIN EN 12102 DIN EN ISO 9614 2 Weighted total sound power level at B0 C 3 K W35 C 5 K At rated heating output dB A 43 43 43 Vitocal 242 G 2...

Page 114: ...op RFH at minimum flow rate mbar 580 580 540 Max flow temperature C 60 60 60 Instantaneous heating water heater Heating output kW 8 8 Rated voltage 1 N PE 230 V 50 Hz Fuse protection 3 B16A 1 pole Sol...

Page 115: ...220 220 Continuous output for DHW heating from 10 to 60 C l h 241 275 309 Performance factor NL to DIN 4708 1 0 1 1 1 3 Max draw off rate at the stated per formance factor NL and DHW heating from 10 t...

Page 116: ...urn mm Cu 28 x 1 Cold water DHW RP DHW circulation G 1 Solar flow and return DN 20 multi connect system Sound power level Test with reference to DIN EN 12102 DIN EN ISO 9614 2 Weighted total sound pow...

Page 117: ...1 with A1 13 2009 05 BGR 500 chapter 2 35 In accordance with the following Directives this product is designated with _ 2004 108 EC 2006 42 EC 97 23 EC 2006 95 EC Details according to the Pressure Equ...

Page 118: ...imit safety cut out 38 Connecting the solar circuit pump 38 Connection At control unit 34 Cooling circuit 32 DHW 31 Electrical 33 Hydraulic 29 Overview 7 Primary circuit 29 Secondary circuit 29 30 Sol...

Page 119: ...ter 65 Enable electric booster heater 65 Expansion PCB 40 Extended menu 62 External blocking Parameter settings 64 External changeover in operating status Parameter settings 64 External demand Paramet...

Page 120: ...it 40 N Ni 500 75 Noise 77 Noise volume 77 Non return valve 31 O Off signal 47 ON OFF switch 60 On site connections 7 Opening programming unit 71 Opening the heat pump 18 53 Operator s log 53 Outside...

Page 121: ...emoving programmining unit cover 72 Repairs 67 Repair work 53 Replacing the magnesium anode 59 Reports 106 Control parameters 106 Writing commissioning reports 53 Required parameter settings For syste...

Page 122: ...0 Curve 76 Temperature sensor type Pt 500 Curve 76 Terminating service 62 Three phase monitor 48 TNC system 47 48 Total sound power level 113 116 Total weight 16 Transport brackets 28 77 U Underfloor...

Page 123: ...123 5601 598 GB...

Page 124: ...d 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 c...

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Viessmann BWT 241.A Series, Installation And Service Instructions Manual

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