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geoTHERM - Vaillant

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1. gt Electrical circuit diagram VWS 230V x1 S white 3 3 yellow 3 z Is lz J B S esque OJN N O ABB A1230 01 OIL N BN S white else AMU alen SES SE i el SZ vie ellow green yellow green Ibe JS elo Brown S N a K yellow green Fuse PE 9 0 Blue IEF T4A 250V grey JON 2 2 Lis el gt Oo o ge yellow green pE BPE S l white je IS e black S N m eas S IS IS g orange roiz pE o orange D z e oli o Dag O Fuse njo TAA 250V Z High pressure switch a SfN mi gifs d o N S el gt 2 9 a black ez black Jel grey Supply of zg 1 8 Low pressure switch yellow brown Brine pump 2 9 white yellow S N e black an zfs sl Control of 210 black ez ml starting current Fe black tol 2 limiter ES t white Ge ao zale 2 o
2. Fig 6 11 Hydraulic plan 3 Key to Fig 6 11 30 Gravity brake 31 Control valve with position indication 32 Cap valve 33 Air separator Dirt filter 42a Expansion relief valve 42b Expansion vessel AF Outdoor sensor VF2 supply temperature sensor WQ Heat source circuit KW Cold water optional for hydraulic decoupling 27 Heating circuit pump with control line to the heat pump 39 Hydraulic switch Installation instructions geoTHERM VWS 0020046310_01 Note Should hydraulic decoupling of the hea ting circuit be necessary then fit a low loss header and an external heating cir cuit pump as shown in Fig 6 11 6 6 5 Mixer circuit with buffer cylinder and dome stic hot water cylinder Hydraulic plan 4 The unregulated underfloor heating circuits are opera ted with the external heating circuit pump from the buf fer cylinder via a mixer The feed temperature sensor is located behind the external pump The heat pump responds to a buffer cylinder heat re quirement The heat pump also supplies a domestic hot water cylin der 16 AF WO 230 V 230 V
3. Temperature C Resistance ohms Temperature C Resistance ohms 40 87879 40 327344 35 63774 35 237193 30 46747 30 173657 25 34599 25 128410 20 25848 20 95862 15 19484 15 72222 10 14814 10 54892 5 11358 5 42073 0 8778 0 32510 5 6836 5 25316 10 5363 10 19862 15 4238 15 15694 20 3372 20 12486 25 2700 25 10000 30 2176 30 8060 35 1764 35 6535 40 1439 40 5330 45 1180 45 4372 50 973 50 3605 55 807 55 2989 60 672 60 2490 65 562 65 2084 70 473 70 1753 75 400 75 1481 80 339 80 1256 85 289 85 1070 90 247 90 916 95 212 95 786 100 183 100 678 105 158 105 586 110 137 110 509 15 120 15 443 120 104 120 387 125 92 125 339 130 81 130 298 135 71 135 263 140 63 140 232 145 56 145 206 150 50 150 183 155 44 155 163 Table 1 Appendix VR 10 sensor characteristics Installation instructions geoTHERM VWS 0020046310_01 Table 2 Appendix VR 11 sensor characteristics 85 VRC DCF outside temperature sensor Temperature C Resistance ohms 25 2167 20 2067 15 1976 10 1862 5 1745 0 1619 5 1494 10 1387 15 1246 20 1128 25 1020 30 920 35 831 A0 740 Table 3 Appendix VRC DCF sensor characteristics 86 Installation instructions geoTHERM VWS 0020046310_01 Heat pump schematic
4. Fig 1 Appendix Heat pump schematic Key to Fig 1 Appendix Heating circuit pressure sensor Electric auxiliary heating High pressure sensor High pressure switch Compressor Low pressure sensor Low pressure switch Heat source circuit pressure sensor Evaporator Expansion Valve Condenser Filter drier DHW return line Heating return Heating feed OmANaAUKRWN BEE Installation instructions geoTHERM VWS 0020046310_01 87 Electrical circuit diagram
5. mmm E E OF 18 SE Ei lee 19 O O 20 O 21 22 2 O o S L fan all 2 3 4 5 SCH 6 7 8 ASB LIONLIONLIONLI NL 21 LN 21 L N 21 20Q Gaz eog aal loool loo ogl Joe log Joo 23 N sc 32 31 30 E 28 ie 26 25 24 Fig 6 7 Controller PCB Key to Fig 6 7 U tion t inal BEE 18 Check LED for power supply lights green if OK 1 lt ZH gt Electric auxiliary heating 2 LP UV1 3 port diverter valve for hot water generation e Ge SE S es brine Sat it 3 lt ZP gt Circulation pump for hot water ONONO TOE Stebel g cutie nt MILET 21 Controller plug User Interface 4 lt SK2 P gt unused 22 e ti Ke 5 lt HK2 P gt External second heating circuit pump 33 ee GE Ge gt 6 lt HK2 gt Actuation of 3 way mixer valve ehser conne chon pug 7 VF2 External flow sensor must always be installed L tion t inal 8 RFI Temperature at bottom of buffer cylinder A AB GE
6. 4 kW Fig 6 2 Unblocked mains feed supplied configuration This is how the heat pump is wired when delivered The heat pump is connected to the mains on a single ta riff one consumer meter 1 The power company re serves the right to switch off the compressor and the auxiliary heating as required by means of a ripple cont rol signal The duration and frequency of the deactivati on is determined by or must be arranged with the power company Key to Fig 6 2 O Pump O Compressor N o Controller TT Auxiliary heater You can set the output of the auxiliary heating from 4 kW to 2 kW by removing the bypass line if required Am Si Lk aloo EIER E CG Connect the power supply to the principal mains feed Connect the ripple control signal relay to terminal 13 EVU if required by the power company This signal blocks the heat pump when the contact is closed see Fig 6 7 You will find an overview of the complete wiring dia gram in the appendix Installation instructions geoTHERM VWS 0020046310_01 6 4 2 Dual circuit feed heat pump tariff Electroplan 2 S 230 V 50 Hz UIOICORCH HOU fc PR ZJN D BIE GG Q W Gu Fig 6 3 Dual circuit feed heat pump tariff In this instance the h
7. Fig 6 21 Installing the front upper cladding Feed the console connector through the opening in the front lower cladding panel and then press the panel into the spring retainer on the casing frame Screw the cladding panel to the casing with the two screws as shown in the illustration 39 Fig 6 22 Fitting the operating console e If you have mounted the vrnetDIALOG communication unit connect the connection cable to the controller PCB see Chap 6 5 Fig 6 24 Fitting the upper cover e Attach the upper cover and screw it down securely with the two associated screws e Press the pipe access cover into the spring retainer Fig 6 23 Fitting the front lower cladding e Press the lower cladding panel into the spring retainer on the casing and screw the panel frame to the casing using the two screws as shown in the illustration 40 Installation instructions geoTHERM VWS 0020046310_01 Fig 6 25 Fitting and connecting the operating console Connect the supply line to the control panel D Fig 6 26 Fitting the front panel of the operating console e Push the front panel of the control panel on to the frame Installation instructions geoTHERM VWS 0020046310_01 7 Start up Danger Risk of injury The heat pump may only be put into ope ration after all the cladding sections have been fitted
8. Table 8 4 Parameters that can be set in the Code level cont see Figs 1 and 2 in the appendix 60 Installation instructions geoTHERM VWS 0020046310_01 Display shown diagnosis D5 CH circuit Buffer VF1 45 C Buffer RF1 36 C T Flow Mix OffsetVF2 38 C Cylinder temp REAL 52 C lt UV1 gt heat zone Description Buffer VF1 Buffer cylinder top temperature sensor Buffer RF1 Buffer cylinder bottom temperature sensor Flow sensor VF2 Current CH flow temperature Cylinder temp SP Temperature in the domestic hot water cylinder UV1 Status of 3 way valve HK heating circuit WW hot water Factory setting Menu I Display general information In Menus H to 14 you can obtain information regar ding the settings for the heat pump Display of the error memory showing the last 10 er Error History i rors in the order they appeared The error number with error code the date time of Fault number Di See the occurrence and a short description of the error Fault code 96 e can all be read The error number shows the order in 16 02 08 R ene which the errors occurred The error code identifies Error CH circuit the error You will find a listing in Chap 10 Error coolant pressure sensor Turning the El dial shows the next error Statistics i2 Compressor hours Compressor operating hours to date Compresso
9. 7 1 General points regarding start up e Before putting the heat pump into operation first check the Start up Checklist in Chap 14 The heat pump may only be started if all the points noted there have been satisfied Before you actually start up the heat pump familiarise yourself with the controller interface described below 4 7 2 Operating the controller 7 2 1 Finding your way around the controller 1 Vaillant Basic data Date Day of week 6 i Time 3 gt Set day 5 4 Fig 7 1 Operating overview Key 7 2 3 Typical operating sequence on the operator 1 menu name level 2 Cursor indicates the selected parameter 3 menu number 4 ae Turn the dial E until the menu Diale k required has been selected position parameter turn select parameter press 5 Dial El select menu turn activate special operation press 6 Information line in the example a handling request Turn the dial until the para meter to be modified has been selected 7 2 2 Calling up the screens The menus are identified by a number at the top right of the display You can access the next menu by turning the El dial The numbers make it easier to find individual menus during programming Press the dial Fl to mark the parameter to be modified The parameter will be high lighted on a dark background Turn the dial H to mod
10. Floor drying You can dry out a freshly laid screed floor using this function in accordance with Table 8 1 The flow tempera ture corresponds to a routine stored in the controller and is independent of the outside temperature All the selected operating modes are interrupted when this function is activated See Table 8 4 Menu C6 Day after starting the Target flow temperature for this day function Starting 25 C temperature 25 C 1 30 C 2 35 GC 3 40 C 4 45 C 5 12 40 C 13 35 C 14 30 C 15 25 C 16 10 C 17 23 frost protection function pump in operation 24 30 C 25 Abr oC 26 40 C 27 45 C 28 35 C 29 25 C Table 8 1 Progress of the screed floor drying The operating mode is displayed together with the cur rent day and the target flow temperature The current day can be set manually If the brine circuit is not yet finished the drying of the screed floor can be accomplished by means of the auxi liary heating In order that the drying of the screed floor can take place by means of the auxiliary heating select the value ZH only for the Heating mode parameter in Menu C7 Auxiliary heating Caution Overloading of the heat source If too much energy is extracted from the heat source while drying out a floor e g in the winter months the source can be overloaded and its regeneration impaired When the function is started the current time of the start is saved The d
11. Fig 4 7 Transporting the heat pump pushcart Caution Risk of damage Find out the weight of your heat pump from the Technical Data and make sure that the transport equipment you select is appropriately designed When using a barrow take note Only use the barrow on the rear side of the heat pump as the weight distribution is then the most fa vourable e Fasten the heat pump with a restraining strap e Use a ramp when pushing the barrow from the pallet e g a batten and a sturdy board Installation instructions geoTHERM VWS 0020046310_01 17 4 11 Removing the cladding The cladding panels are screwed on and additionally provided with retaining clips Fig 4 10 Removing the front lower cladding e Unfasten the two screws on the console frame and pull it together with the front lower cladding away from the casing Fig 4 9 Removing the upper cover e Remove the pipe access cover which is fastened with retaining clips by pulling it gently upwards e Unfasten the screws for the upper cover which are concealed beneath it e Remove the upper cover in an upwards direction Fig 4 11 Removing the front upper cladding e Unfasten the two screws on the front of the front upper cladding and remove the cladding 18 Installation instructions geoTHERM VWS 0020046310_01 4 12 On site installation Caution Flush the heating system thoroughly be f
12. Vaillant For the heating engineer Installation instructions geoTHERM Heat pump VWS 666868 8 GB Contents 6 3 6 4 6 4 1 6 4 2 6 4 3 6 4 4 Notes on the documentation ccssccsssssoee 3 Storage of the documents 3 Symbols used 3 Applicability of the manual 4 CE lab EE 4 INCOMES KE 4 Description of the appliance sssssssssoees 5 Data lee 5 Functional principle s s ss000050 6 Design of the heat pump 7 General notes on operating modes and TUTICEIONS sesusts tessscsnsadecaasccesissacsaswshssssstagasscdesascstlsnacsiee 9 Safety instructions and regulations 10 Safety instructions uu ccecssssesesceessescssesessseseseesees Regulations rules guidelines ele EI EE Assembly and installation ccccssssssees 12 Lee 12 Requirements of the installation siften 12 Dimensions and clearances s s ssesseseeses Assembly Installation at a glance Preparatory work in the installation area Requirements of the heating circuit Scope of delivery oo cecssesetseseeteeseees Unpacking the unit and checking the delivery 16 Transporting the heat pump 16 Installing the heat PUMP s ssssessessssessesessessesessessesees 17 REMOVING the cladding cceeescesessssceseseeteseeeees 18 On Site installati Nessin 19 Assembly of the heating evstem 20 Assembly brine circuit 20 Fitting the VRC DCF outside temperature S DIS 21 Fitting
13. Auxiliary heating 1 N PE 230 V 50 Hz Alternative operation as delivered condition 4 kW A 16 20 25 25 Parallel operation A 25 35 35 50 Dual circut supply heat pump tariff Compressor single A 16 25 25 Auxiliary heating 2 4 kW single A 16 20 16 20 16 20 Dual circuit supply special tariff Alternative operation as delivered status 4kW A 16 20 25 25 25 25 Parallel operation A 25 35 35 50 35 50 Pumps and controllers A 4 4 4 Start up current without start up current limiter A 58 76 97 with start up current limiter A lt 45 lt 45 lt 45 Rated output min for B 5W35 kW 1 4 1 8 2 4 max for B2ZOW60 kW 2 8 4 0 4 9 Auxiliary heating kW 2 4 2 4 2 4 EN 60529 level of protection IP 20 Hydraulic connections Heating circuit flow and return mm G11 4 diameter 28 Heat source flow and return mm G 11 4 diameter 28 Heat source circuit brine circuit Brine type S Ethylene glycol 30 max operating pressure MPa bar 0 3 3 min inlet temperature oC 10 max inlet temperature C 20 Nominal flow rate dT 3K h 1453 1936 2530 Residual head dT 3K mbar 381 332 263 Nominal flow rate dT 4K h 1090 1452 1898 Residual head dT 4K mbar 461 429 380 Electrical power consumption pump W 132 132 132 CH circuit max operating pressure MPa bar 0 3 3 min flow temperature C 25 max flow temperature oC 62 Nominal flow rate dT 5K h 1061 1375 1803 Residual head dT 5K mbar 382 339 254 Nomin
14. O HEH SP VE O j k LE ig pak KW NI 43 Fig 6 12 Hydraulic plan 4 Key to Fig 6 12 25 Circulation pump 27 CH pump 30 Gravity brake 31 Regulating valve with position indicator 32 Cap valve 33 Air separator Dirt filter 42a Expansion relief valve 42b Expansion vessel 43 Safety group drinking water cylinder 46 Mixer valve SP Cylinder temperature sensor AF Outdoor sensor VF1 Top temperature sensor buffer VF2 supply temperature sensor RF1 Bottom temperature sensor buffer WO Heat source circuit KW Cold water 36 Installation instructions geoTHERM VWS 0020046310_01 Connecting the DCF receiver Fig 6 13 Connecting the DCF receiver e Wire the DCF receiver as shown in Fig 5 13 left enclosed external sensor DCF receiver right alternative solution with separate external sensor An alternative solution with a separate VRC 693 out door sensor in necessary if e g no radio reception is available at the location of the outdoor sensor 6 8 Connecting accessories Caution Risk of damage Switch off the power before connecting additional units to the eBUS You can connect the following accessories Up to six VR 60 mixer modules to expand the system by system circuits factory pre set as mixer circuits Up to eight VR 90 remote control units to control the first eight heating circuits vrnetDIALOG 840 2 or 860 2 Connection in each case to the
15. With the saving function you can set back the heating times for a set Energy saving enabled table period Enter the time for the end of the saving function in the format hh mm hour minute gt Select end time We 16 02 08 9 35 Party function With the party function you can set the heating and hot water times Gary function enabled beyond the next switch off time on to the next start of heating The y party function can only be used for the heating circuits or hot water circuits for which the operating mode Auto or ECO is set We 16 02 08 9 35 One time charging This function allows you to charge the hot water cylinder once regar dless of the current time program one time DHW tank loading enabled Table 8 5 Special functions Installation instructions geoTHERM VWS 0020046310_01 65 Reset to default setting Keep dial El and dial F pressed for longer than 5 seconds After that you can select whether to reset only the timer programme or all values to the default settings Display shown Description We 21 04 08 9 35 The default settings will be reinstated Caution Ensure that a qualified technician performs the default set Factory setting ie ting reset The system specific settings are reset The system can be cancel NO YES Cap Th t d t suffer d Time programme NO YES snu own e system aoes not sutter damage Everything NO YES Press the two dials for at least 5 seconds to
16. is used to programme the mixer circuits For convenient operation you can connect the VR 90 remote control unit for the first eight heating circuits see Chap 4 13 8 4 2 Energy balance controller Energy balance control is applicable only to hydraulic systems without buffer cylinders e g Hydraulic Plans 1 and 3 For economical and fault free operation of a heat pump it is important to regiment the starting of the compres sor The start up of the compressor is the point at which the highest loading occurs With the help of the energy balance controller it is possible to minimise starts of the heat pump without compromising the comfort of a pleasant room atmosphere As with other weather controlled heating controllers the controller determines a supply set target temperature by capturing the outside temperature through a heating curve The energy balance calculation is carried out based on this supply set target temperature and the supply real temperature the difference of which is measured per minute and added up 1 degree minute min 1 K temperature difference in the course of 1 minute The heat pump starts up at a defined heat deficit selec table on the controller see Menu C4 and only switches off again when the supplied heat is equal to the heat de ficit The larger the preset negative numerical value is the longer the periods for which the compressor is kept run ning or at standstill 47 8 4 3 Charging pr
17. 5 g RS pagel A Main power inlet 2 GAGI Y o 1x 230V PEN 20 el oa S oo 21 8 ool oolg w 2 9 S 5 S yellow green HHE TR g ifs QS W Qj aol ES X le blue a fa ZS blue Q oO OQ ZI A grey Tripus TP3250 40 307P002 Le a E vos S WW gl lg EIS z ii de Oo r i Ei Jl GIL D l AE 3 met o WV oF a Qo OW OF me O O ei black o lyellow green Sp Oo W Oo B S grey 3 Safety a jo W o g aci S thermostat STB z CO W OF ellow green eo OW of ASB black black h Fi a Lr 2 O KIA K2A zc O black OD Q z S fe k O a p J i J S ew NTCs black orange O Glo poe LU 5 os WW Gin PTC trown 3 white tT GLI 2 aa whife Sa Oo T cs m O O GI al ile rown capacitor Tl g IS Cas prawn O Cl a blac 5 CR K3B KZ Hee a sl jue running capacitor V ovo R Se W ol Di Cle c 1 L a T a f BS 2 Keg N Diverter Valve O CR Gs O X Heating internal A yellow green yellow green S 220202 Jeallea 2 ojo ojo o ojo o a A E a jue kl S x brown HEHE B S S o s a2 3 E f SlS s uza uzu back a a wn ow OO Heating pump Brine pump Compressor vrnetDIALOG optional Electric auxiliary heating Fig 2 Appendix circuit diagram 88 Installation instructions geoTHERM VWS 0020046310_01 Vaillant Ltd Nottingham Road amp Belper Derbyshire 8 DE561JT Telephone 0845 602 2922 E www vaillant co uk B info vaillant co uk 0020046310_01GB 082008
18. 60 is connected the lower menu appears se veral times for each heating circuit lt HK2 gt c5 Only when using the VR 90 VR 80 remote control None Switch on room temperature None Room temperature from the remote control is not taken into account Switch on In addition to the selected heating curve the heating flow temperature is also affected Remote control Yes 23 C by the difference between the setpoint and current gt Select type room temperatures Thermostat The room temperature from the VR 90 is used directly for controlling i e the function of a room thermostat Remote control Automatically indicates whether a VR 90 remote control unit is connected YES NO If YES the room temperature measured by the VR 90 is also displayed Parameters Switch on room temp gt None This menu occasionally appears on more than one occasion for each heating circuit You can select the starting day for floor drying the O flow temperature setpoint is automatically called up in accordance with the floor drying function daily values 25 30 35 C see Chap 8 3 Settable auxilia ry functions It takes approx 20 seconds for the actual value to be displayed gt Set starting day Deactivating the floor drying function set to Day o Depending on the configuration of the heating sys tem the display will indicate for other heating cir cuits if required Special function c6 Floor
19. Displays in the error memory and under The heat pump including the compressor remains in operation The following errors are displayed in the error memory and in Menu El1 as warning messages system as a result of leakage or air lock Pressure lt 0 6 bar Table 10 2 Display in error memory and under Warning mes sage in Menu EI 1 no shut down Installation instructions geoTHERM VWS 0020046310_01 Fault code Error text description Possible cause Remedy 26 Overheating on compressor Excessively high output with a high Reduce the heating curve Check the required pressure side flow temperature heating output floor drying building shells and reduce if necessary 36 Low brine pressure Pressure drop in the heat source Check heat source system for leaks top up brine bleed 71 10 4 Temporary shut down The compressor shuts down the heat pump remains in operation The compressor can start again after 5 minu tes at the soonest see below for exceptions over source outlet Source outlet temperature T8 too low lt Freeze protect temp parameter in Menu A4 temperature sensor T8 defective Too low a volume flow in the heat source circuit No full dirt filter in source return line Air in brine circuit Fault code Error text description Possible cause Remedy 20 Frost protection heat source Heat source pump defective Check heat source flow rate monitoring source outlet te
20. Factory setting Cancel NO YES Time programme NO YES Everything NO YES gt Select Installer Menu We 16 02 08 Energy input display Sparen aktiviert for gt Select stop time We 16 02 08 9 35 Party function enabled Mo 21 04 08 16 49 BI Flow Temp CH 28 C System pressure 1 2bar Brine pressure 1 4bar CH Comp only OF Parameters Heating mode 3x gt Auto Set value day Night set back temp gt Select operation mode We 16 02 08 One time DHW tank loading enabled Domestic hot water Time programme Mo Basic data Date 21 04 08 Day of week gt Mo Time 09 35 Domestic hot water gt Set day of the week Parameters Operation mode DHW Circulation pump Time programme p t Mo Min DHW temp Current DHW temp gt Select operation mode 06 00 Code layer gt Select day of th k elect day of the weel Code Nummer gt 0000 gt Adjust numeric character HK2 Time programme Mo Holiday programming He for cpl System Periods 1 gt 06 01 08 08 01 08 2 14 01 08 31 01 08 Room Temp setpoint 12 C D Code level only for expert technicians 00 00 24 00 gt Set starting day OF displays in grey are dependent on the set hydraulic plan Fig 8 1 Displays in the Operator level Installation instructions geoTHERM VWS 0020046310_01 49 8 6 Code level sequence diagram HK 2 Parameters Type Heating curv
21. The set back temperature is pre set automatically for each heating circuit if the outside temperature falls below 3 C Cylinder frost protection This function starts automatically when the actual tem perature of the cylinder falls below 10 C The cylinder is Installation instructions geoTHERM VWS 0020046310_01 then heated to 15 C This function is also active in the Off and Auto operating modes regardless of the timer programmes Checking the external sensors The hydraulic basic circuit given by you during commis sioning determines the required sensors The heat pump constantly checks automatically that all sensors are in stalled and functioning Protection from loss of heating water An analogue pressure sensor monitors possible low water pressure and switches the heat pump off if the water pressure on the pressure gauge reads less than 0 5 bar and switches it back on when the water pressu re is over 0 7 bar on the pressure gauge Pump seizing and valve seizing protection To prevent the heating circulation or brine pumps or the hot water diverter valve UV1 from seizing those pumps and the valve that have not been in operation for the last 24 hours are turned on in sequence for approxi mately 20 seconds every day Protection against loss of brine An analogue pressure sensor monitors possible low brine pressure and switches the heat pump off if the brine pressure is ever less than 0 2 bar on the pressure
22. VWS 0020046310_01 10 3 Displays in the error memory and under Warning message 10 4 Temporary shut down 10 5 BIOCKING error uu eesesesesssesssesccesssssesesescscscseseesssceceees 10 6 Other errors MAIFUNCTIONS ss ssss sssesssosssessssesssessse 76 11 2 Packaging UE E Gel EE 77 12 Warranty and customer service ssssse 77 12 1 Vaillant warranty 12 2 Vaillant Service secccsscsssccsesstsedesnconssisscssesszcsazcsiossntedacee 13 Technical data e ssoccsssocessscocessoocessoosesscssessse 78 14 Start up checkliSt ssseessssssoocecsssssssooccccsessse 80 15 R terengEsstehege egeeg deeg ER LIT Ir csscicvsscsiccscocsscvenscoaccodscteoncsescacsossossdassecsetessssses 85 Sensor Charackertstice EEN 85 VRC DCF outside temperature sensgot 86 Heat PUMP SCHEMATIC E 87 Electrical circuit diagram EE 88 Installation instructions geoTHERM VWS 0020046310_01 1 Notes on the documentation The following notes are intended as guidance throug hout the entire documentation Further documents apply in combination with this instal lation manual We accept no liability for any damage caused by fai lure to observe these instructions Other applicable documents For the owner of the system Operating manual No 0020045200 For the heating engineer Installation instructions VPS buffer cylinder No 0020070601 Installation Manual for vrnetDIALOG No 839189 Installation manual for vrDIALOG No 002002300
23. block Table 8 3 Settable parameters in the operator level ctnd Installation instructions geoTHERM VWS 0020046310_01 55 Display shown Holiday programming for cpl System 6 Period of time 1 gt 06 01 08 2 14 01 08 Room Temp setpoint 08 01 08 30 01 08 12 C gt Set start day Description For the controller and its connected system compo nents it is possible to programme two holiday peri ods with the introduction of the date Moreover the desired target room temperature can be set for holi days i e regardless of the preset timer programme After the holiday time has elapsed the controller au tomatically goes back to the previously selected operating mode The holiday program can be activa ted only in auto and eco operating mode Connected cylinder charging circuits or circulation pump circuits are automatically switched to OFF operating mode during the holiday time program Factory setting Period 1 01 01 2003 01 01 2003 Period 2 01 01 2003 01 01 2003 Room Temp setpoint 15 C Basic data El 7 Date 21 04 08 Day of week Mo Time 09 35 gt Settable values You can set the current date the day of the week and the current time if DCF radio clock reception is not pos sible in the Basic Data menu These settings apply to all connected system compo nents Code layer 8 Code number gt 0000 Stand
24. call up the default set tings menu gt Settable values Table 8 6 Reinstating default settings 66 Installation instructions geoTHERM VWS 0020046310_01 8 10 Parameters that can be set with vrDIALOG 810 2 Using its computer supported graphics visualisation and configuration vrDIALOG 810 2 eBUS enables you to optimise heating appliances and control systems and thus make use of their energy saving potential Both of them enable you to create a visual impression of the processes in your control system and influence them at any time The programmes enable you to record and graphically prepare system data to load device configu rations and change and save them online and to save in formation in the form of reports Using vrDIALOG 810 2 you can make all the settings for the heat pump as well as other settings for optimisation Settings via vrDIALOG may only be performed by an ex perienced specialist Parameters Description Factory setting Calibration of temperature sensors Internal sensors can only be calibrated via vrDIA LOG 810 2 Change name CH circuit A maximum of ten HK2 lt HK2 gt letters are available per heating circuit for this purpose A maximum of ten letters are available per heating circuit for this purpose The selected names are saved automati cally and displayed on the corresponding displays Depending on the system configuration the names of ad ditional heating
25. circuit Sensor T3 heat source Fig 10 1 Error message in error memory Menu l1 The geoTHERM control system recognises three diffe rent types of malfunction Malfunction of components which are connected via eBUS Temporary shutdown The heat pump remains in operation The error is dis played and disappears independently when the cause of the fault is removed Fault induced shutdown The heat pump is shut down It can only be restarted by resetting the error after removing the cause of the fault see Menu 1 Moreover other errors malfunctions can occur on the unit or system 70 Installation instructions geoTHERM VWS 0020046310_01 10 2 Malfunctions of eBUS components Fault code Error text description Possible cause Remedy 1 XXX address YY not accessible A component XXX connected via the Check the eBUS cable and plug eBUS e g VR 60 with the address YY Check that the address switch is correctly set is not recognised 4 XXX address YY sensor fault A sensor ZZZ on one of the Check the ProE plugs on the PCBs check the ZZZ components XXX connected via the sensor for correct functioning replace sensor eBUS with the address YY is defective 5 XXXX setpoint not achieved XXXX setpoint not achieved Check temperature setpoint Check position of temperature sensor Deactivate temperature error detection C13 Table 10 1 Malfunctions of eBUS components 10 3 Warning message
26. circuits appear in the display Software version The status provides information about the operating state of the heat pump software Elec Tariff switch Status of power interruption due to activation of the EVU contact blocking initiated by the power company no no blocking yes blocking active activation by means of e g ripple control signal receiver Starting current limiter Soft start status ON OFF E Fixed value day Fixed value night This display only appears if the setting Type Fixed value has been selected via vrDIALOG Here the flow temperature is controlled around a fixed setpoint independently of the outside temperature Fixed value day Flow setpoint temperature e g for ma 35 C nually set screed floor drying Fixed value night Flow setpoint temperature at night 30 C Type HK2 Setting the heating circuit type direct circuit Direct circuit Hydraulic plan 3 Heating mode runs with the setpoint flow temperature determined by the weather controlled energy balance controller Mixer circuit Hydraulic plan 4 Heating mode runs with the setpoint flow temperature determined by the weather controlled controller Fixed value Fixed settings for the setpoint flow tempe ratures for day and night see Menu C5 Table 8 7 Parameters that can be set with vrDIALOG 810 2 Installation instructions geoTHERM VWS 0020046310_01 67 Parameters Minimum flow te
27. cylin der top sensor VF1 T buffer bottom RF1 Temperature at the buffer cy Inder bottom sensor REI see Section 8 4 3 Table 8 4 Parameters that can be set in the Code level Installation instructions geoTHERM VWS 0020046310_01 57 Display shown Description Factory setting lt HK2 gt c4 The lower menu is only displayed when a buffer cy Information linder is used e g Hydraulic Plans 2 and 4 and pos Setpoint flow temp 410c Sibly on more than one occasion when a VR 60 is PENSEME A Eege Hydraulic Plans 1 and Status of pump of the direct heating mode e g Hydraulic Plans 1 an 3 the upper display is shown Setpoint flow temp Setpoint flow temperature for the heating circuit Flow temp VF2 Current flow temperature VF2 mins lag gain 183 min are eA Energy integral The energy integral is the cumula Parameters tive difference between the VF2 flow temperature Setpoint flow temp 41 C and the target flow temperature per minute The Flow temp VF2 29 C heat pump starts when the energy deficit is at a de Status of pump Off fined level see Energy balance control Chap 8 4 2 Status hydr mixer Open Status of pump indicates whether the pump is tur ned on or off ON OFF Status hydr mixer Caution The OPEN CLOSED in dication describes the direction in which the control system is driving the mixer If the mixer is not ac tivated OFF appears If a VR
28. eBUS terminal Fig 6 7 Item 11 connected in parallel 6 8 1 Installing the VR 90 remote control unit The VR90 remote control units communicate with the heating controller via the eBus You can connect them to any interface in the system You need only make sure that the bus interfaces are connected to the heat pump controller The structure of the Vaillant system allows you to run the eBus from component to component see Fig 6 9 Interchanging the cables does not lead to any impair ment in communication Installation instructions geoTHERM VWS 0020046310_01 eBus Fig 6 14 Connecting remote control devices All eBus connector plugs are designed to allow you to wire at least 2 x 0 75 mm per pigtail The use of cable with a cross section of 2 x 0 75 mm is therefore recommended for eBUS cables Setting the bus address In order to ensure perfect communication between all components it is necessary to provide the remote cont rol unit with an address that matches the heating circuit to be controlled Set the bus address on the first additional VR 90 re mote control unit to 2 Set different sequential bus addresses for any further remote control units Observe the VR 90 manual Fig 6 15 Setting the bus address 37 6 8 2 Connecting further mixer circuits Like the VR 90 remote control uni
29. each of the 12 months of the current year black bar White filled bars represent the future months of the year the height of the bar corresponds to the yield for the month in the previous year comparison possible On commissioning the height of the bars is zero for all months as no in formation is available yet The scaling in the example 4000 kWh adapts automatically to the month s highest value Top right the total of the environmental yield since commissioning is displayed in the example 13628 kWh Heating only comp Warning message Warning message Mon 21 04 08 16 49 ER Current flow temp 28 C CH pressure 1 2bar Brine pressure 1 4bar jcurrent operating status The following are possible Day date time as well as flow temperature heating system pressure and heat source pressure are displayed Current flow temp Current flow temperature in the unit Heating system pressure Heating circuit pressure sensor Pressure heat source Heat source pressure Pressure sensor for heat source circuit brine pressure Heating only comp this status message provides information on the Heating only comp Heating comp amp ZH CH ZH only CH Comp amp aux off WW Comp amp aux off WW Comp only WW ZH only Peak Rate WW Peak Rate Stand by Acceleration mode Frost prot Heating Frost prot Cylind Legionella protect Automatic pump spin Floor drying Venting mode Fault shutdown hea
30. expansion tank Clamp for fastening the brine expansion tank 12 1 Insulation matting for heat source connection on the rear wall 13 5 Installation instructions operating manual 14 2 Seals with metal support rings for heat source circuit connection elbows Table 4 2 Scope of delivery The frame for the operating console is already fastened to the heat pump casing on delivery 4 8 Unpacking the unit and checking the delivery Fig 4 5 Removing the transport securing device e Carefully remove the packaging and padding taking care not to damage any parts of the unit Unfasten the transport securing devices brackets with which the heat pump is fixed to the pallet The brackets are no longer required 16 Regardless of the mode of transport the heat pump must never be tilted by more than 45 Otherwise it can cause mal functions in the coolant circuit during later operation which in the worst case can lead to a failure of the whole sy stem Fig 4 6 Transporting the heat pump carrying Installation instructions geoTHERM VWS 0020046310_01 We recommend that the heat pump be transported with 4 10 Installing the heat pump the aid of a suitable barrow Fig 4 8 Adjusting the feet e Pay attention to the minimum wall clearances when installing the heat pump see Fig 4 2 e Align the heat pump horizontally by adjusting the feet
31. jumpers dashed lines 3 Connect the permanent power supply to the controller condary consumers circulation pumps controller mains feed 2 etc must be ensured via a meter The low tariff sup Connect the low tariff power supply to the low tariff ply for the compressor and the auxiliary heating is ef mains feed 1 fected via a second meter and can be interrupted by the Connect the ripple control signal relay to terminal 13 power company at peak times EVU if required by the power company This signal blocks the heat pump when the contact is closed see Key to Fig 6 4 Fig 6 7 You will find an overview of the complete wiring dia Pump gram in the appendix O Compressor NK Controller TT Auxiliary heater You can set the output of the J l 2kW auxiliary heating from 4 kW to 2 kW by removing the bypass line 4kw if required 28 Installation instructions geoTHERM VWS 0020046310_01 6 4 4 Connecting external components ABB Ai2 30 01 PEN L 1 2 e o E P OC GO LG GO GH np NIN L L L L L s s s s a z N E Clala ololoiolal clola ola jolelololalolola IECH EIERE EI EIERE EIS 22d CG Och eco pff ELE EES HOU goea ES GH GH GH GH Fig 6 5 Connecting external components Key to Fig 6 5 Wi Brine Switch XS 3 way valve with solenoid Should you wish
32. low temperature heating sys tems The system must therefore be designed for low flow temperatures ideally around 30 to 35 C Further more it must be ensured that power company outages are bridged over EN 12828 requires the following the heating system in stallation a filling valve in order to fill the heating system with water or be able to drain the water a diaphragm expansion vessel in the return line of the heating circuit an overpressure safety valve opening pressure 3 bar with pressure gauge safety group in the flow line of the heating circuit immediately after the appliance an air dirt separator in the return line of the heating circuit To avoid energy losses and protect against freezing thermal insulation must be installed on all supply lines The lines must be dirt free so flush these through tho roughly before filling if necessary Caution Risk of damage Do not add any antifreeze or corrosion protection agents to the heating water as seals and other components can be damaged as a result and this can lead to water leaks In hydraulic installations that are predominantly equip ped with thermostatically or electrically controlled val ves it is necessary to ensure a constant adequate flow through the heat pump Regardless of the choice of hea ting system the nominal flow rate of heating water must be ensured This is guaranteed by using a professi Onally installed buffer cyl
33. of in the household waste at the end of its useful life In this case make sure that the Vaillant appliance and any ac cessories present are properly disposed of at the end of their useful life As this Vaillant appliance is not covered by the law re garding the marketing return and environmentally friendly disposal of electrical and electronic equipment ElektroG in Germany free disposal at a municipal coll ection point is not provided 11 2 Packaging Make sure that the transport packaging is handed over to a proper disposal organisation 11 3 Coolants The Vaillant heat pump is filled with R 407 C coolant Danger R 407 C coolant Disposal of the coolant must only be by qualified specialists Do not inhale gases or vapours when dis posing of the coolant Risk to health Avoid contact with the skin and eyes Escaping coolant can cause freezing if the exit point is touched R 407 C coolant presents no danger in normal use and under normal conditions With improper use however it can cause injury and damage Caution Environmental hazard Before disposal of the heat pump the coolant must be disposed of at special facilities Installation instructions geoTHERM VWS 0020046310_01 12 Warranty and customer service 12 1 Vaillant warranty Vaillant provide a full parts and labour warranty for this appliance The appliance must be installed by a suitably competent person in accordance with the Gas Safety Ins
34. system vrDIALOG 810 2 vrDialog is a communications unit with software and connecting cable which enables you to carry out diagno sis monitoring and parametrisation of the heat pump from a computer vrnetDIALOG 840 2 860 2 The vrnetDIALOG communications unit enables you to carry out remote diagnosis monitoring and parameter setting on the heat pump from a computer over a tele phone connection or via an integrated GSM modem VPS heating water buffer cylinder The VPS buffer cylinder provides an intermediate sto rage facility for heating water and can be installed between the heat pump and heating circuit It provides the necessary energy to bridge over the power compa ny blocking periods Other accessories Heat transfer fluid Filling pump Safety assembly and tundish Expansion vessel for the heating circuit 4 2 Requirements of the installation site Choose a dry room that is generally frost proof The floor must be level and sufficiently stable to be able to bear the weight of the heat pump together with a DHW and possibly a buffer tank It must be possible to install suitable pipe conduits for heat source DHW and heating When choosing the installation site bear in mind that when operating the heat pump can transmit vibra tions to the floor or nearby walls In accordance with DIN EN 378 T1 the minimum instal lation space for heat pumps Vmin is calculated as follows Vmin G c G c
35. the VR 90 remote control unit 21 Installing the VR 60 mixer module eee 21 Filling the heating and heat source systems 21 Filling the heating circuit een 21 Filling the brine CirCuit ssssessssessessssessessssessesssses 21 Electrical installation cccssccssssssccsssssees 24 Safety and installation pformation 24 Regulations pertaining to electrical instalation Seins iiS a Electronic DOX en Connecting the power supply Unblocked mains supply Electroplan 1 26 Dual circuit feed heat pump tariff El CtrO Pla Keier 27 Dual circuit feed special tariff EIQ CEFOPIAN 21 28 Connecting external Components 29 Simultaneous operation of the compressor AN auxiliary beating EEN Controller PCB at a glance Wiring the Controller PCB ess Connecting the VR 10 standard Sensor 32 Direct heating operation Hydraulic plan 1 33 Mixer circuit with buffer cylinder Hydraulic plan 21 34 Direct heating operation and domestic hot water cylinder Hydraulic plan 321 35 Mixer circuit with buffer cylinder and domestic hot water cylinder Hydraulic plan A 36 Connecting the DCF receiver uu eseceseceseseeeeeee 37 CONNECTING accCessorles EEN 37 Installing the VR 90 remote control unit 37 Connecting further mixer circuits oo eeeees 38 Connecting vrnetDlAl OG 38 Connecting an external boiler en 39 Fitting the cladding and the control panel 39 S
36. 0 C Source inlet temperature temperature sensor T3 9 C in the example see Figs 1 and 2 in the appendix Under the arrow the output of the heat source in the example 10 KW is displayed The extent of darkening of the arrow graphically shows the energy efficiency of the heat pump under the given operating conditions The output of the heat source must not be equa ted with the heating output The heating output corresponds to approx the output of the heat source compressor output When the compressor or the electric auxiliary heating is switched on the arrow is shown filled gt gt gt Left and right flash when the compressor is switched on and energy is consequently being taken from the environment and fed to the hea ting system gt gt gt Right flashes when energy is being fed to the heating system e g only from the electric auxili ary heating The heat pump is in the CH mode Moreover the heating flow temperature is displayed in the ex ample 30 C The symbol indicates that the domestic hot water cylinder is being heated or that the heat pump is in the ready state The temperature in the domestic hot water cylinder is also display ed Table 8 3 Parameters that can be set in the Operator level 52 Installation instructions geoTHERM VWS 0020046310_01 Display shown Description Energy input display Shows the energy extracted from the environment for
37. 3 The manuals for any accessories and controllers used also apply 1 1 Storage of the documents Please pass this installation manual and all other valid documents on to the owner of the installation in order for him or her to store it so that it is available whenever it is required 1 2 Symbols used Please observe the safety instructions in this installation manual for the installation of the appliance Danger Immediate risk of serious injury or death Danger Danger of death by electric shock Danger Danger of burning and scalding Caution Potentially dangerous situation for the product and environment Note Useful information and instructions qe e Symbol for a necessary task 1 3 Applicability of the manual These installation instructions apply exclusively to appli ances with the following part numbers Article number 0010005501 0010005502 Type name VWS 61 2 230 V VWS 81 2 230 V The appliances are intended for operation on a power supply network with a system impedance Zmax at the transfer point house connection of 0 16 ohms maxi mum Intended use includes the observance of the installation manual 0010005503 VWS 101 2 230 V Table 1 1 Type designations and article numbers The part number of the equipment can be taken from the identification plate 1 4 CE label With the CE mark we confirm as equipment manufactu rers that th
38. Parameters that can be set in the Code level cont Installation instructions geoTHERM VWS 0020046310_01 63 Display shown A6 Actuators Sensors Addr 4 Off VF a 29 C VR 60 Select Description The display only appears is several heating circuits and at least one VR 60 are installed You can check the actuators for the connected ac cessories with the component test 2 This interventi on lasts for a maximum of 20 minutes and ignores current controller inputs during this time After wards the heat pump reverts to its previous opera ting condition Factory setting Tool Ventilation AT Venting prog Off Venting prog The brine pump alternates between 50 minutes operating and 10 minutes off 24 hours of intermittent operation of the brine pump and the circulation pump and also UV1 and the coo ling UV mixer if necessary Tool A8 Outside temperature DHW sensor SP T Flow Mix OffsetVF2 Buffer sensor RF1 0 0 K 0 0 K 0 0 K 0 0 K Manual adjustment of the displayed temperatures Offset adjustment range Outside temperature 5 K step size 1 0 K all others 3 K step size 0 5 K Flow sensor VF2 temp is always displayed Internal sensors can only be changed via vrDIALOG buffer sensors and cylinder sensors only if the cor responding hydraulics are installed Turn the right hand dial to display more sensors Setti
39. The user alone bears the risk Caution Any improper use is forbidden The appliances must be installed by a heating engineer who is responsible for adhering to the existing regulati ons rules and guidelines Installation instructions geoTHERM VWS 0020046310_01 2 Description of the appliance 2 1 Data badge An identification plate is attached to the baseplate on the inside of the geoTHERM heat pump The type desi gnation is located at the top on the grey frame of the pillar also see Fig 2 4 Item 1 Vaillant GmbH Remscheid Germany Serial No 21054500100028300006000001N1 VWS 61 2 230 V IT FR NO LV LT EE ES UK IP 20 O 1 N PE 230V 50Hz O NJ 1 N PE 230V 50Hz HT 1 N PE 230V 50Hz 68 kW P Max POON 28 w P I 2 4 kW l 58 A H Fz lt 16 A l Ee MPa bar R407 C 1 9 kg a 2 9 29 MPa bar COP BO W35 4 2 COP B5 W55 3 0 BO W35 6 0 kW B5 W55 6 3 W k 01 N4 Ge DINN SR 210545001000283000060000 Fig 2 1 Example of an identification plate Installation instructions geoTHERM VWS 0020046310_01 Explanation of the symbols on the identification plate Rated voltage compressor O A Rated voltage pumps controller Rated voltage auxiliary heating P Rated maximum power Rated power compressor pumps PC O AJ and controller Rated power auxiliary heating l Start up current without start up current limiter Start up current with
40. VWS 0020046310_01 4 13 Fitting the VRC DCF outside temperature sensor Fit the sensor in accordance with the enclosed installati on manual 4 14 Fitting the VR 90 remote control unit If you install several heating circuits you can connect a separate VR 90 remote control unit for each of the first six circuits It allows the operating mode and target room temperature to be set and takes into account the actual room temperature measured by the built in room sensor if necessary It is also possible to adjust the parameters for the asso ciated heating circuit timer programme heating curve etc and to select the special functions party etc In addition it is possible to query the heating circuit and to display service and fault messages For assembly of the VR 90 remote control unit see its enclosed installation instructions Regarding installation see Chapter 6 8 1 4 15 Installing the VR 60 mixer module With the mixer module you can expand the control sys tem of the heating installation by two mixer circuits You can connect a maximum of six mixer modules A unique bus address is set on the mixer module by means of a rotary switch The setting of the heating programme and all the required parameters is carried out from the operating console All heating circuit con nections sensors and pumps are made directly on the mixer module using a ProE plug For assembly of the VR 60 mixer module see its enc losed installati
41. We S t limit 9 VFI Temperature at top of buffer cylinder EENS 25 8 Compressor contactor 10 SP DHW cylinder temperature sensor Ze 7 P itch nu BUS eBUS ressure switc 27 6 not connected 12 DCF AF Outside temperature sensor DCF signal 38 66H untied 13 EVU EVU contact ripple control signal from power open compressor operation permitted Ower SUpp y S 21 3 Internal heating circuit pump closed compressor operation blocked 32 2 d 14 1xZP Contact for one shot request for SSC See circulation pump e g via button HR PCB components The controller PCB has a protective cover plate which 15 eBUS vrDIALOG has cut outs for the eBUS vrDIALOG Item 15 connec 16 eBUS address rotary switch set to 1 factory setting tion as well as for the power supply LED Item 18 17 Fuse T 4A 250 V The cover plate must be removed to change the fuses Items 17 and 19 Installation instructions geoTHERM VWS 0020046310_01 31 6 6 Wiring the controller PCB The controller has an automatic sensor recognition function You must configure the connected heating cir cuits in accordance with the system combination In the following you will find various options for operating the heat pump 6 6 1 Connecting the VR 10 standard sensor Additional sensors are required as flow return collector or cylinder sensors depending on the configuration of the system The VR 10 standard sensor is so designed that it can be used as an immersion sensor e g as a c
42. Were the brine circuits hydraulically balanced Was the brine expansion tank fitted Was the brine source circuit filled to a pressure of 1 5 bar Was the brine expansion tank filled to 2 3 full Were isolating devices fitted ahead of the heat pump Were the pipes thermally insulated against vapour diffusion Table 14 1 Start up checklist 80 Installation instructions geoTHERM VWS 0020046310_01 Electrical installation checklist Is there an isolation device with at least 3 mm contact opening fitted on the customer side and was it appropriately labelled Were all electrical connections properly made and in accordance with the specified electrical circuit diagrams Was the protective earth properly connected Do all conductors have the required cross sections Were the required automatic safety devices used and labelled in accordance with the conductor cross sections and installation methods used Were all cables fastened using strain relief clamps Was any available ripple control signal from the power company connected to the heat pump Assembly checklist Were all the cladding panels fitted Table 14 1 Start up checklist cont Installation instructions geoTHERM VWS 0020046310_01 81 15 Reference To the technician Please fill in the following tables to facilitate any servicing work that may arise Installation and commissioning were carried out by Heat source con
43. ac cordance with a settable timer programme The heating circuit is switched off during the set back period provided the frost protection function which depends on the outside temperature is not activated Heating The heating circuit operates at the room set target temperature regardless of any settable timer programme Energy sav The heating circuit operates at the set back temperature regardless of any settable timer programme Off The heating circuit is off provided that the frost protection function depending on the external tem perature is not activated Note Additional heating circuits are displayed depending on the system configuration Factory setting Room set target temp 20 C Set back temp 15 C Table 8 3 Settable parameters in the operator level ctnd 54 Installation instructions geoTHERM VWS 0020046310_01 Display shown DHW loading H 4 Parameters Operating mode WW gt Auto Max DHW temp 60 C Min DHW temp 44 C Cylinder temp REAL 51 C gt Select set target temperature Description Factory setting For connected domestic hot water cylinders and the circulation circuit the operating modes Auto On and Off are possible temp 44 C The maximum WW temperature determines the temperature to which the domestic hot water cylin der should be heated The minimum WW temperature determines the limit below which the domestic hot water cylinder is heate
44. accessories Fit the two connecting elbows 4 and 5 with the seals with the metal support ring supplied with the accesso ries The accessory kit contains an insulating pad for insu lating the connection plate Fit this insulating pad to the two right hand screwed connections 6 4 12 1 Assembly of the heating system Caution Risk of damage In order to be able to clear any possible overpressure the heat pump must be connected to an expansion vessel and an expansion relief valve at least DN 20 with a maximum opening pressure of 3 bar not supplied Danger Risk of scalding The blow off line on the expansion relief valve must be the size of the valve s outlet aperture and be installed in a frost free environment It must remain constantly open It must be fitted in such a way that persons are not endan gered by hot water or steam when it blows off We recommend the installation of a Vaillant safety group and a tundish Fit the heating flow and return lines with all compo nents e Insulate all the pipes 4 12 2 Assembly brine circuit e Install the heat source pipes and all their associated components 49 49 58 61 61 Fig 4 14 Fitting the brine expansion tank cr Note The brine expansion tank has a capacity of approx 6 litres and is thus adequate for brine circuits up to a maximum of 1900 litres Caution Material damage resulting from escaping brine The scr
45. account the on site in stallation conditions If the local power company stipulates that the heat pump should be controlled by a blocking signal fit an appropriate contact switch as specified by the power company and connect it to the heat pump with a two core cable 6 2 Regulations pertaining to electrical installa tions The maximum sensor cable length of 50 m may not be exceeded Where lengths are greater than 10m route the connec tion cables carrying 230V separately from the sensor or bus cables Do not use free terminals on the appliance as support terminals for other wiring Installation instructions geoTHERM VWS 0020046310_01 6 3 Electronic box sl Fig 6 1 Electronic box Key to Fig 6 1 Control box upper level 1 Cable clamps Terminal strip for sensors and external components Controller PCB Contactor for electric auxiliary heating Reset button for the auxiliary heating safety thermostat see Item 11 In conjunction with a multi cylinder Connections for a 3 way valve to be fitted on the customer side 7 Power supp
46. age Eege CERN eg 41 General points regarding start up Al Operating the controller Finding your way around the controller Calling UP the Screens EE Carrying out the initial commissioning Bleeding the brine Circuit esessceceseteeeeeeees Bleeding the heating circuit Handing the system over to the operator 44 CONMtrOlle Pvcacciscscnsscecte eege 45 Operating modes and functions eeseceseseeees 45 Automatic auxiliary functions Settable auxiliary FUNCTIONS eceseetseeeteeeees Auxiliary functions in the Operator Level 46 Auxiliary functions via vrDIALOG Description of the controller ue eeeeeeeeeeeeees Possible system circuits eeessesessseeseseeseeseeeees Energy balance controller Charging principle buffer Cylinder cesses Resetting to factory settings ssesssssssessssessesesses Controller structure Operator level Sequence diagram s s ssssesseseesess Code level sequence diagram Displays in the operator level Displays in the code Layer Installer Menu REENEN Parameters that can be set with vrDIALOG 810 2 67 Inspection and maintenance scccccsees Notes for MAINTENANCE EE Carrying out maintenance work Test Operation and restarting ssecccecsseceeeees Troubleshooting and diagnosis c0se00 70 Error messages on the Copntroller en 70 Malfunctions of eBUS components s s ses0000000 71 Installation instructions geoTHERM
47. al flow rate dT 10K h 517 697 848 Residual head dT 10K mbar 486 468 450 Electrical power consumption pump W 93 93 93 refrigerant circuit Coolant type KR R407 C Quantity kg 1 9 2 2 2 05 Number of revolutions EX valve S 9 0 9 0 9 0 Permissible operating overpressure MPa bar 2 9 29 Compressor type 7 Scroll Oil Ester Oil filling quantity 13 1 45 1 45 Table 13 1 Technical Data cont d on next page 78 Installation instructions geoTHERM VWS 0020046310_01 Description Unit VWS 61 2 230 V VWS 81 2 230 V VWS 101 2 230 V Heat pump performance data BOW35 dT5 Heating output kW 6 0 EN 10 5 Power consumption kW 1 4 1 9 2 5 Performance figure COP 4 2 4 2 4 2 B5W55 Heating output kW 6 3 8 6 10 8 Power consumption kW EN 2 8 3 5 Performance figure COP S 3 0 3 0 3 1 Internal sound level dbA 49 51 53 Conforms to safety regulations S CE mark Low Voltage Directive 73 23 EWG EMC Directive 89 336 EWG EN 60335 ISO 5149 Table 13 1 Technical data cont Caution A R 407 C is a chlorine free coolant which does not affect the ozone layer Never theless servicing work on the cooling circuit should only be carried out by aut horised specialists Installation instructions geoTHERM VWS 0020046310_01 79 14 Start up checklist Check the following checklist before putting the heat pump into service Only operate the heat pump when all points have
48. ard code 1000 gt Set figures To access the Code layer Technician level enter the appropriate Code standard code 1000 and press the right hand dial E To view set values without entering the code you must press the F dial once You can then view all pa rameters of the code level by turning the dial but not change them Security function Your code entry is reset again 15 minutes after your last change in the Code level ac tuation of one of the dials To gain entry to the Code level again after that you will have to enter the code once more 1000 Table 8 3 Settable parameters in the operator level ctnd 56 Installation instructions geoTHERM VWS 0020046310_01 8 8 Displays in the code layer The Code layer has different areas in which you can change parameters or merely view them depending on the context The context can always be recognised from the menu name Menu C Set parameters for the heating system Menu D Perform diagnostics Menu I Display general information Menu A Installation assistant Your code entry is reset again 15 minutes after your last change in the Code level actuation of one of the dials To gain entry to the Code level again after that you will have to enter the code once more Display shown Description Factory setting Menu C Set parameters for the heating system In Menus C1 to C9 you can set the parameters for th
49. ay is changed exactly at this time After network off on the floor drying begins as follows Installation instructions geoTHERM VWS 0020046310_01 Last day before mains off Start after mains on 1 15 1 16 16 17 23 17 24 28 24 29 29 Table 8 2 Progress of the screed floor drying following mains off on If you do not wish to carry out the drying with the speci fied temperatures and or times you can specify variab le flow temperature setpoints by means of fixed value controlling see following section When doing this take note of the applicable compressor hysteresis settable via vrDIALOG see Chap 8 10 Legionella protect The purpose of the Legionella protect function is to kill off germs in the DHW tank and in the pipes Once a week the domestic hot water cylinder is raised to a temperature of approx 70 C The expert technician activates the Legionella protect function in the Code level and there can set a starting time and a starting day weekday on which the heating is to take place see Table 8 4 Menu C9 Remote parameter setting alerting diagnostics It is possible to diagnose and adjust the heat pump by remote commands via vrDIALOG 810 2 or vrnetDIALOG 840 2 or 860 2 You will find more detailed information on this in the respective manuals 8 3 3 Auxiliary functions via vrDIALOG Using its computer supported graphics visualisation and configuration vrDIALOG 810 2 eBUS enables
50. been satisfied in essence Heating circuit checklist During planning was consideration given to parts of the building that are to be heated at a later time Was the power for the hot water supply considered Were the heating circuits in the system hydraulically balanced Were leakage pressures determined by pipe network calculations If planning calculations showed that pressure losses were to be expected Was a second pump incorporated to overcome the pressure losses Have you taken the minimum mass flow of the heat pump into consideration Was a dirt filter incorporated in the return line Was the system provided with all the safety devices described in this manual Were an overflow funnel and blow out line incorporated Were the pipes insulated with thermal insulation Was the heating circuit flushed filled and bled Was the heating circuit checked for leaks Brine circuit checklist Was the brine circuit pressure tested with water and checked for leaks Were the water antifreeze mixing proportions 2 1 adhered to Was the frost protection 15 C tested with a frost protection tester Was a pressure switch incorporated in the brine circuit Was the pressure switch connected to the heat pump Was a dirt filter fitted at the brine side input to the heat pump Were stop valves incorporated into the brine circuit Were pressure regulating valves incorporated into the brine circuit
51. ce checklist Installation instructions geoTHERM VWS 0020046310_01 83 Details regarding the heat consuming system Details If a second pump was incorporated to overcome the pressure losses Manufacturer and type of the second pump Heating load of the underfloor heating Heating load of the wall heating Heating load of the combination underfloor heating radiators Was a secondary return installed Yes No Starting up the heat pump system Details Checks before handing over to the user Pressure of the heating circuit in a cold state Does the heating system get warm Does the water in the DHW cylinder get warm Controller settings Were the basic settings made on the controller Was the anti legionella function programmed Interval and temperature Handover to the user Details Was the user instructed on the following points Basic function and operation of the controller Operation of the bleeding device Maintenance intervals Documentation handover Details Was the operating manual handed over to the user Was the installation manual handed over to the user Were the manuals for all the accessories handed over to the user Table 15 1 Reference checklist cont 84 Installation instructions geoTHERM VWS 0020046310_01 Appendix Sensor characteristics VR 10 external temperature sensors VR 11 internal temperature sensors
52. d Note The maximum DHW temperature is only dis played when the auxiliary hot water heating is en abled see Menu C7 Without electric auxiliary hea ting the WW temperature is limited by the pressure sensor control shut off in the cooling circuit and cannot be adjusted Cylinder temp REAL Current temperature in the domestic hot water cylinder Min hot water lt HK2 gt D You can set the heating times for each heating cir ae Fri 0 00 Time programme cuit in the HK2 Timer programme SMon menu Up to three heating times can be programmed per 1 00 00 24 00 S i day or block The control system operates according 2 to the heating curve and the room setpoint tempera 3 ture gt Select weekday block DHW loading D You can set the times ae waich ine domestic hot SE Fri 6 00 Time programme water cylinder is heated in the WW Timer Pro Sat 7 30 gt Mon gramme menu 23 30 Up to three times can be programmed per day or Su 7 30 1 06 00 22 00 22 00 5 block 3 gt Select weekday block Circulation pump H5 You can set the times at Wen the circulation pump SCH Fri 6 00 Time programme is to be operational in the Circulation Pump Timer ea 7 30 Programme menu 23 30 gt Mon i Up to three times can be programmed per day or Su 7 30 block 2 If the hot water operating mode see menu E3 is 3 set to ON the circulation pump runs continuously gt Select weekday
53. d for the operating console the second cable is intended for con nection to the eBUS plug from the vrnetDIALOG unit cr Note Any other eBUS cables already present on the vrnetDIALOG unit are not re quired and can thus be removed e Now connect the aerial or telephone cable 3 to the vrnetDIALOG unit see also the vrnetDIALOG manual These cables must not be fed through the heat pump Installation instructions geoTHERM VWS 0020046310_01 6 9 Connecting an external boiler If your external boiler has a Vaillant eBUS interface you can connect it to the heat pump eBUS via the VR32 ac cessory refer to the VR32 manual for more informati on papoa Vir 2f12 ecroarl7 x 2P Tel BUS pCrag Fig 6 19 Connecting to a boiler with an eBUS interface Boilers without eBUS interfaces are switched by the heat pump controller via the internal auxiliary heating contact ZH see Fig 6 7 using an isolating relay acces sory Vaillant No 306249 Installation instructions geoTHERM VWS 0020046310_01 M G anann E E Ge CO CH D c Fig 6 20 Connecting to a boiler without an eBUS interface Key to Fig 6 20 1 Isolating relay Accessory No 306249 In both cases the heat pump switches in the external boiler depending on the heat demand and the controller setting 6 10 Fitting the cladding and the control panel
54. d mains supply 2 Dual circuit feed heat pump tariff 3 Dual circuit feed special tariff Press the E dial to confirm the selection Adopting the settings Turn the El dial until the cursor gt on the right of the accept menu entry points to NO Press the El dial The parameter will be activated and displayed in inverse video Turn the E dial until YES appears Press the E dial to confirm the selection Note A complete description of the displays Menus A1 to AQ for the initial commis sioning can be found in Table 8 4 cr Make all the necessary settings and continue with the Installation Assistant to the end Installation completed A9 Exit mode gt yes gt Settable values Fig 7 5 Menu A9 Ending the installation e Only set Exit mode to YES if you are sure that everything has been set correctly Once you have confirmed with YES the controller switches to the graphics display The heat pump starts under its autonomous control system 44 7 4 Bleeding the brine circuit To bleed the brine circuit activate the Brine bleeding menu point in Menu A7 The brine pump now alternates between 50 minutes operation and 10 minutes standstill Check whether the fluid level in the brine expansion tank has stabilised Let the brine pump continue to run so that the air trapped in the system can be collected in the expansi on tank The level of the fluid in t
55. down takes place see Chap 10 5 For the geoTHERM VWS heat pumps you can set the value Default setting 10 C for the freezing protection in the installation assistant A4 8 3 Settable auxiliary functions You can set the following auxiliary functions from the controller yourself and thus adapt the system to local circumstances or the operator s wishes Note Operation of the controller is sub divided into three levels Operator level gt for the operator Code level gt for the expert technician vrDIALOG gt for the expert technician Ee 8 3 1 Auxiliary functions in the Operator Level Time programme You can set the heating times for each heating circuit You can store up to three heating periods per day or per block Block Mon Fri or Mon Sun or Sat Sun See Table 8 3 Menu El3 Timer programs Holiday programming You can programme two holiday periods with date entry You can additionally define the set back tempera ture to which the system should be regulated during the period of absence See Table 8 3 Menu E4 Holiday programming Party function The party function permits you to extend the current heating and hot water periods beyond the next switch off time to the start of the next heating period See Chap 8 9 Energy saving function This function allows you to set back the heating for an adjustable period of time See Chap 8 9 46 8 3 2 Auxiliary functions in the Code Level
56. drying Day Temp HK2 gt 1 0 C HK3 HK4 Table 8 4 Parameters that can be set in the Code level cont 58 Installation instructions geoTHERM VWS 0020046310_01 Display shown Auxiliary heater C7 Aux on during CH no CH Aux on during DHW comfort CH start at 600 min gt Settable values Description Aux on during CH no CH CH blocked comfort CH enabled dependent on Out T aux htr on no CH and mins lag gain no CH CH only Heating mode by means of auxiliary hea ting only e g in emergency operation Aux on during DHW no CH CH blocked comfort Auxiliary heating supplies the temperature level that the compressor cannot provide approx gt 58 C cylinder temperature CH only DHW heating by means of auxiliary heating only e g in emergency operation if no CH was previously activated a max DHW temp of approx 58 C applies if CH was activated the max DHW temp set in C6 applies CH start at Setting the degree minutes until the auxiliary heating starts added to the degree minutes for compressor start Example 600 min plus 120 min gt start at 720 min Out T aux htr on The auxiliary heating is only en abled for post heating in heating mode below this temperature can be set in Menu A3 Factory setting Legionella protect c9 Parameters Legionella protect Off Legionella start 04 00 gt Select Legionella protec
57. e Max limit outs temp Comp starts at gt Set heating curve HK2 Parameters Current flow temp Status of pump Status hydr mixer Setpoint flow temp Code layer change Code number Accept change gt Adjust numeric character c2 HK 2 c2 Parameters Direct circuit Type Fixed value gt 0 80 Max limit outs temp 21 C 120 min gt Values can be set gt Values can be set gt Values can be set HK2 CA Information 41 C Setpoint flow temp 41 C 29 C Flow Temp VF2 30 C OFF Status of pump OFF mins lag gain 183 min Special function Floor drying Hk2 gt Set starting day Auxilary heater Cr Aux on during CH no CH Aux on during DHW comfort ZH Starts at 600 min gt Values can be set Legionella protect c9 Legionella protect OFF Legionella start 4 00 gt Select displays in grey are dependent on the set hydraulic plan Fig 8 2 Displays in the Code level 50 Installation instructions geoTHERM VWS 0020046310_01 Diagnosis Refrigerant circuit Test Comp High Pressure T outlet compresor Comp Low Pressure T inlet compressor Diagnosis Refrigerant circuit Error History Fault number Fault code 16 02 05 07 18 Refrigerant pressure sensors fault Overheat Subcooling Temp TEV inlet Diagnosis Central Heating Statistics Compr Hours Compressor starts Aux heater Hours Aux heater starts Current flow t
58. e See Error 29 See Error 29 Error 29 has occurred three times in a row 90 Heating system pressure Pressure drop in the heating system Check heating system for leaks top up too low as a result of leakage air lock or water bleed check the expansion vessel defective expansion vessel Pressure lt 0 5 bar Screw couplings at the rear of the Retighten screw couplings Heat pump shuts down and heat pump are not sealing correctly goes into operation Compression fittings on 3 way valve Retighten compression fittings on 3 way automatically when the are leaking valve pressure rises above 0 7 bar Table 10 5 Fault induced shutdown cont Installation instructions geoTHERM VWS 0020046310_01 75 Table 10 5 Fault induced shutdown cont 10 6 Other errors malfunctions Malfunction sign Possible cause hault Error text description Se Aas Possible cause Remedy code mode 91 Brine pressure too low possible Pressure drop in the heat source Check heat source system for leaks top system as a result of leakage or air up brine bleed Pressure lt 0 2 bar lock Heat pump shuts down and Brine pressure sensor defective Check the plug contact on the PCB and goes into operation the cable harness check pressure automatically when the sensor for correct functioning replace pressure rises above 0 4 bar pressure sensor L1 and N connections on the PCB Check L1 and N connections on the PCB interchanged and connect correctly if
59. e appliances in the geoTHERM range satisfy the basic requirements of the following Directives Electromagnetic Compatibility Directive Council Di rective 89 336 EEC Low voltage directive 73 23 EEC EN 14511 heat pumps with electrically driven compres sors for heating specifications for appliances for space heating and for warming drinking water EN 378 safety and environmentally related specifica tions for refrigerating systems and heat pumps 1 5 Intended use The Vaillant geoTHERM heat pumps are state of the art appliances which have been constructed in accordance with recognised safety regulations Nevertheless there is still a risk of death or serious injury to the user or others or of damage to the device and other property in the event of improper use or use for which it is not in tended This unit is not intended for use by persons including children having limited physical sensory or mental ca pacities or who have inadequate experience and or knowledge unless they are supervised by a person re sponsible for their safety or have been given instruc tions by him regarding the operation of the unit Children must be supervised to ensure that they do not play with the unit The units are intended as heaters for closed hot water central heating installations and for hot water generati on Any other use or extended use is considered to be improper The manufacturer or supplier is not liable for any resulting damage
60. e next menu Installation assistant A2 Hydraulic scheme 0 Electric Wiring Diagram 0 Accept change No gt Select Fig 7 4 Menu A2 Installation assistant ea The heat pump type has already been set at the factory and may not be chan ged Selecting the hydraulic plan Caution A Possible malfunctions Take care to select the correct hydraulic plan as otherwise malfunctions can occur in the system Turn the El dial until the cursor gt points to the hydrau lic plan no Press the E dial The parameter will be activated and displayed in inverse video Turn the E dial until the hydraulic plan matching your system has been selected see Table 7 1 You will find the hydraulic diagram for your installati on in Chap 6 7 2 ff Press the E dial to confirm the selection E 5 a x 3 v E 2 2 2 s o io amp s gt 0 E SE 25 74 D O a EE 2 D D AF VF1 VF2 RF1 6 9 3 X X AF SP VF2 6 10 4 X X X AF SP VF1 VF2 RF1 6 11 Table 7 1 Selecting the Hydraulic plan No Selecting the electroplan e Turn the E dial until the cursor gt points to the number of the electroplan Press the E dial The parameter will be activated and displayed in inverse video Select 43 e Turn the E dial until the electroplan 1 2 or 3 matching your mains supply is selected see Chap 6 4 1 Unblocke
61. e various functions of the heat pump Comp starts at 120 min gt Select temperature Code layer c Menu for changing the code number 1000 change You can replace the standard code 1000 with a user GE defined four digit code here Note If you change the code make a note of the gt 0000 new code otherwise you will not be able to make any more changes in the code level Accept change No gt Set figures lt HK2 gt c2 Type Direct circuit for direct hydraulics Parameters Mixer circuit for buffered hydraulics Type directere Fixed value can only be set via vrDIALOG 810 2 Heating curve Adjustable heating curve not with Heating curve 0 80 fixed value 0 3 Max limit outs temp gt 21 C 22 C Maximum limit outside temperature Temperature limit for switching off heating mode summer func tion Comp starts at Set the degree minutes until com pressor start only with direct hydraulics lt HK2 gt c2 Parameters Type Fixed value Max limit outs temp gt 21 C gt Select temperature This display appears if Fixed value has been set via vrDIALOG 810 2 If a VR 60 is connected this menu appears several times for each heating circuit This display is only shown when a buffer cylinder is used e g Hydraulic Plans 2 and 4 Setpoint flow temp Target flow temperature T buffer top VF1 Temperature at the buffer
62. eat pump is operated on two tariffs two consumer meters A permanent supply 2 for the secondary consumers auxiliary heating circulation pumps controller etc must be ensured via a meter The low tariff supply 1 for the compressor is effected via a second meter and can be interrupted by the power company at peak times Key to Fig 6 3 C Pump O Compressor NK Controller TT Auxiliary heater You can set the output of the auxiliary heating from 4 kW to 2 kW by removing the bypass line if required 2kW mmm gt UT 4w JA Installation instructions geoTHERM VWS 0020046310_01 Remove the jumpers dashed lines 3 Connect the permanent power supply to the high ta riff mains feed 2 Connect the low tariff power supply to the low tariff mains feed 1 Connect the ripple control signal relay to terminal 13 EVU if required by the power company This signal blocks the heat pump when the contact is closed see Fig 6 7 You will find an overview of the complete wiring dia gram in the appendix 27 6 4 3 Dual circuit feed special tariff Electroplan 3 1 2 a l 230 V 50 Hz 230 V 50 Hz PEN L L n pe Di 2 kW Fig 6 4 Dual circuit feed special tariff In this instance the heat pump is operated on two tariffs two consumer meters A permanent supply for the se Remove the
63. eating circuit Out T aux htr on incorrectly set Faulty pump Flush the heating circuit Change Out T aux htr on Menu A3 Check functioning of the pump replace if necessary Traces of water beneath or next to the appliance Outside temperature indicates 60 C The condensate drain is blocked Leaks from the heating circuit Outside temperature sensor defective Condensate in the interior of the unit is collected in the condensate pan and if necessary fed away under the unit not a fault Check the insulation on the pipes in the interior of the unit and re insulate if necessary to reduce the accumulation of condensate Check the heating circuit components pump auxiliary heating pipes for leaks If necessary retighten the screw couplings and replace the seals Check outside temperature sensor Temperatures in the heating circuit too cold or too warm Room target temp not optimally set Change room target temp Menu im Set back temp not optimally set Change set back temp Menu im Heating curve not optimally set Change heating curve Menu C2 Table 10 6 Other errors malfunctions 76 Installation instructions geoTHERM VWS 0020046310_01 11 Recycling and disposal Both your Valliant geoTHERM heat pump and its associ ated packaging consist mainly of raw materials that can be recycled If your heat pump carries this symbol it must not be disposed
64. edy 52 Sensors are not suited to Hydraulic plan not entered correctly Check the hydraulic plan and sensor the hydraulic plan sensors not connected correctly positions using the existing system 60 Frost protection heat source possible monitoring source outlet Error 20 has occurred three See Error 20 See Error 20 times in a row 62 Frost protection heat source possible monitoring source outlet Error 22 has occurred three See Error 22 See Error 22 times in a row 72 Flow temperature too high Flow sensor VF2 fitted too close to Relocate flow sensor in accordance with for underfloor heating the heat pump hydraulic plan Flow sensor VF2 is defective Check flow sensor VF2 replace if Flow temperature is higher necessary than a preset value for Defective heating circulation pump Test heating circulation pump replace if 15 min max HK owen or pump output has reduced necessary COMP Stel s 5 Existing dirt strainers clogged or Clean dirt strainers See Chap 8 10 default incorrectly dimensioned setting 52 C y e Mixer behind buffer cylinder is Test mixer replace if necessary defective Max HK temp set too low Check Max HK temp setting 81 Coolant pressure too high possible Error 27 has occurred three ECHELON ens SEE Error aT times in a row 83 Coolant pressure too low possible Check heat source See Error 28 See Error 28 Error 28 has occurred three times in a row 84 Coolant pressure outside possible the rang
65. emp Current return temp CH pump System pressure Auxiliary heater Diagnosis Heat Source Brine pump T Return Source T outlet Evaporator Brine pressure Software release 1 0 card User Interface Installation assistent Auxiliary heater Integration of the Auxiliary heater gt intern Out T aux htr on 5 gt Select Installation assistent Geothermal settings Freeze protect Temp gt Select Component Test 1 Reset Code 1 0000 Code 2 Codes accepted Diagnosis Direct circuit T Flow Mix Offset VF2 Current DHW temp gt Select Installation assistent Al Language selection Tool Ventilation Venting prog Language gt GB english gt Select language Installation assistent A2 Hydraulic Scheme No 3 App ode 5 Electric Wiring Diagram 1 Accept change YES gt Select gt Select Tool Calibration Outside temperature T DHW Offset SP displays in grey are dependent on the set hydraulic plan Fig 8 3 Displays in the Code level cont Installation instructions geoTHERM VWS 0020046310_01 51 8 7 Displays in the operator level Display shown Description Graphics display Top level display You can read off the instantaneous state of the system from this dis play This is always shown if you have not actuated either of the dials for a long time while another display is showing Outside temperature here 1
66. ends the use of a refractometer for this purpose Then fill the brine mixture from the container 66 into the heat source system This will require a filling pump 67 that simultaneously bleeds the collector circuit as it fills it Vaillant recommends the Vaillant filling pump Art No 307 093 Connect the pressure line of the pump to the stop valve 62 see Fig 5 1 Close stop valve 57 Open stop valves 62 and 64 22 Open stop valve 61 and connect a hose to it with the other end of the hose draining into the glycol mixture Start the filling pump 67 in order to fill the collector hose Allow the filling pump 67 to run until fluid free of air emerges from the hose connected to stop valve 61 Now open valve 57 so that the air between valves 61 and 62 can escape Close valve 61 and pressurise the brine circuit using the filling pump 67 Take care that the pressure does not exceed 3 bar Now close valve 62 as well Switch off the filling pump 67 and remove the filling hose Open the expansion relief valve 60 to allow any pos sible overpressure to discharge The brine expansion tank must be 2 3 full of fluid Make sure that valve 61 is closed Fill any remaining brine fluid into a suitable container e g plastic canister for topping up later and hand it over to the user for safekeeping Further bleeding is carried out after the cladding sec tions have been fitted and the heat pum
67. ew couplings on the brine expan sion tank must be sealed with hemp Sealing with e g teflon tape can lead to leaks in the brine circuit Fig 4 13 VWS heat source circuit Key to Fig 4 13 33 Air separator Dirt filter 42a Expansion relief valve 49 Flow rate adjuster 57 Brine expansion tank 58 Filling and drainage tap 61 Brine circuit 65 Brine collecting tank K Collector 20 Fit the bracket for the brine expansion tank to the wall using the wall plug and the screw Unfasten the pre assembled connection pieces from the brine expansion tank 57 Wind hemp into the outer threads of the connection pieces Fit the first connection piece to the 3bar expansion relief valve 42a enclosed with the heat pump Using the second connection piece fit the brine ex pansion tank 57 from the accessory kit to the pipe 1 running from the heat source to the heat pump Fix the brine expansion tank with the bracket Fit the connection piece with the expansion relief valve to the brine expansion tank Fit the brine collecting tank 65 to the expansion reli ef valve 42a at zero pressure The brine collecting tank must not be completely closed as otherwise the functioning of the expansion relief valve is not guaranteed Provide all the pipes with vapour proof thermal insula tion The accessory kit contains the insulating mat provided for the thermal insulation of the connection plate Installation instructions geoTHERM
68. function should pre vent unnecessary short term operation of the compres sor Delta T T3 T7 Delta T T3 T7 Max permissible difference between the 20K heat source inlet and outlet temperatures An error mes sage appears and the compressor switches off if it is ex ceeded The function is deactivated if 20K is set Brine pump pre run Temperature fault detection after Brine pump pre run Interval by which the brine pump 1 min switches on ahead of the compressor Temp fault detection If the setpoint for the flow tempe Off rature of a heating circuit is not reached after the preset time a corresponding error message appears in the dis play and the error is stored in the error list display of the last ten errors This function can be switched on or off Next service due Quick test With Next service due ON the time intervals for the energy balance integral are changed from 1 minute to 1 second and the energy balancing is thus accelerated by a factor of 60 The minimum run time of 4 minutes and the minimum off time of 5 minutes for the compres sor are unchanged Table 8 7 Parameters that can be set with vrDIALOG 810 2 cont 68 Installation instructions geoTHERM VWS 0020046310_01 9 Inspection and maintenance 9 1 Notes for maintenance An annual inspection maintenance of the unit by a spe cialist is a prerequisite for continuing operational safety reliability and a lon
69. g working life Danger Inspection maintenance and repair work should only be undertaken by an appro ved heating installation company Inspections Maintenance work not car ried out can result in damage to proper ty and personal injury Danger Risk of fatal electric shock from tou ching live connections Before commen cing work on the heat pump disconnect the power supply circuit breaker and secure it against being switched on again inadvertently Only genuine Vaillant spare parts may be used for in spections maintenance and repair work to ensure the long term availability of all functions of your Vaillant ap pliance and to prevent the approved series condition from being changed Any spare parts which might be required are listed in the relevant current spare parts catalogues Information can be obtained from Vaillant Customer Service Centres Installation instructions geoTHERM VWS 0020046310_01 9 2 Carrying out maintenance work Danger Risk of fatal electric shock from tou ching live connections Before commen cing work on the heat pump disconnect the power supply circuit breaker and secure it against being switched on again inadvertently The heat pump is engineered in such a way that only a few maintenance tasks need to be carried out Manually actuate the safety assemblies in the brine and heating circuits at regular intervals Check the dirt filter in the brine circuit re
70. gauge and error 91 is displayed on the error memory The heat pump switches on again when the brine pres sure rises above 0 4 bar gauge pressure If the brine pressure drops below 0 6 bar on the pressu re gauge for more than one minute a warning appears in menu E1 Floor protection circuit for all hydraulics without buf fer cylinder e g in hydraulic plans 1 and 3 If the heating flow temperature in the underfloor hea ting circuit measured by sensor VF2 continuously ex ceeds a value of max HK temp compressor hystere sis 2 K default setting 52 C for longer than 15 minu tes the heat pump switches off with error message F 72 see Chap 10 6 When the heating flow temperature falls below this value again and the error has been reset the heat pump switches back on The maximum heating flow temperature can be changed via vrDIALOG with the Maximum heating circuit tempe rature parameter Caution Danger of damage to the floor Set the value for the floor protection cir cuit ensuring that it is not high enough to damage the floor as a result of exces sively high temperatures 45 Freezing protection function The outlet temperature of the heat source is constantly measured If the heat source outlet temperature falls below a defined value the compressor switches off tem porarily with error message 20 or 21 see Chap 10 4 If these errors appear three times in succession a fault in duced shut
71. gularly Check the pressures in the brine and heating circuits regularly Danger Risk of injury The heat pump may only be put into ope ration again after all the cladding sec tions have been fitted 9 4 Test operation and restarting Danger Risk of injury The heat pump may only be put into ope ration again after all the cladding sec tions have been fitted e Fit all the heat pump cladding sections as described in Chap 6 4 e Start up the heat pump e Check the heat pump for correct functioning 69 10 Troubleshooting and diagnosis Danger Troubleshooting and diagnostics mea sures may only be carried out by a reco gnised expert technician company Danger A Risk of fatal electric shock from tou ching live connections Before commen cing work on the heat pump disconnect the power supply circuit breaker and secure it against being switched on again inadvertently 10 1 Error messages on the controller Error messages appear on the display approximately 20 seconds after the error has occurred and are written to the controller s error memory if the error is present for approximately 3 minutes You can call up the error memory in Menu 11 As long as the fault is present you can call up the fault display by turning the left hand dial 1x to the left starting from the graphics display Error History 1 Fault number gt 1 Fault code 41 16 02 08 07 18 Error CH
72. he expansion tank falls as a result of the discharge of air and must be topped up again as described in Chap 5 2 Open the expansion relief valve to allow any possible overpressure to discharge The tank must be filled to 2 3 full with fluid 7 5 Bleeding the heating circuit e If manual switching of the heating circuit pump and the 3 way valve is necessary to bleed the heating cir cuit perform this via Menu A5 A6 see Table 8 4 7 6 Handing the system over to the operator e Instruct the operator of the system in the handling and function of all the equipment e Hand over all the instruction manuals and documents for the appliance to the operator for safe keeping e Tell the operator to keep the manuals nearby the con troller Inform the owner of the need for regular in spection of the system Installation instructions geoTHERM VWS 0020046310_01 8 Controller To operate the heat pump economically it is important to match the control system to the customer s heating system and to the pattern of use In the following chapter all the functions of the wea ther controlled energy balance controller will be exp lained 8 1 Operating modes and functions There are five operating modes available for the heating circuit Auto the operation of the heating circuit alternates between the Heating and Energy saving modes in accordance with a preset timer programme Eco the operation of the heating circuit alternates be
73. ify the parameter setting value Press the dal to mark the setting value to be accepted Repeat this sequence until all the settings have been made 42 Installation instructions geoTHERM VWS 0020046310_01 7 3 Carrying out the initial commissioning As soon as the heat pump is supplied with power during the initial commissioning an internal self test starts au tomatically whereby the heat pump checks itself and any connected components for functional capability The sensor pin assignment is also checked during the self test and also the sensors used to make sure they are in working order If the self test was not successful an error message ap pears on the controller display see Chap 10 Trouble shooting and diagnosis e Switch on the circuit breaker so that the heat pump is supplied with power The heat pump starts the controller software is initiali sed Vaillant Loading Fig 7 2 Controller being initialised After a short time the controller is ready for operation and detects that this is an initial commissioning During the initial installation the controller always starts with the Installation Assistant Menu A1 Installation Al Language selection Language gt GB English gt Select Fig 7 3 Menu A1 Language selection Installation instructions geoTHERM VWS 0020046310_01 Change the language setting if necessary and turn the E dial to th
74. inciple buffer cylinder The buffer cylinder is controlled depending on the set point flow temperature The heat pump heats when the temperature of the buffer cylinder head temperature sensor VF1is smaller than the set target temperature It heats until the temperature measured by the sensor at the bottom of the buffer cylinder RF1 has reached the setpoint temperature plus 2 K In the connection to a hot water cylinder charging the buffer cylinder is also charged when the temperature of the head temperature sensor VF1 is less than 2 K higher than the set target temperature premature reheating VFI1 lt T VL set 2 K 8 4 4 Resetting to factory settings Caution Inadvertent deletion of specific settings When you reset the control system to the default settings specific system settings can be deleted and the system can shut down The system does not suffer damage e Press both dials simultaneously for at least 5 seconds in the top level display of the graphics display After that you can select whether to reset only the timer programme or all values to the default settings 8 4 5 Controller structure The top level display is a graphics display It is the starting point for all the available displays This display reappears automatically if you do not actuate any of the dials for a long time when setting values In the following illustrations you can see all the control ler screens in an overview in the form of a flow cha
75. inder Installation instructions geoTHERM VWS 0020046310_01 4 7 Scope of delivery Fig 4 4 Checking the supplied material For key see Table 4 2 The heat pump is delivered on a pallet in two packing units e Check the heat pump and the separately packaged operating console for any transport damage Pos Description 1 1 Heat pump 2 1 Operating console pillar cover Gaskets yellow green for heating circuit elbow unions 2 M6 flat headed screws for fitting the operating console to the frame plus one spare screw Self tapping screws for the operating console 3 frame incl one spare screw Self tapping screws for fastening the 2 vrnetDIALOG unit 6 Litre brine expansion tank incl brass adapter max 3 bar VRC DCF outside temperature sensor VR 10 sensors 45 connection elbow with cap nuts 4 9 Transporting the heat pump We recommend that the heat pump be transported with the aid of a suitable barrow The handles on the rear side of the unit are provided as transportation aids see Fig 2 5 Item 4 Danger Risk of injury Depending on type the heat pump weighs 140 195 kg in the unfilled state To avoid injury use several people to lift it Caution Risk of damage gt Expansion relief valve for brine circuit 1 2 3 bar 5 1 6 4 7 1 Control cable for vrnetDIALOG 8 5 9 1 1 Bag of small parts for fastening the brine
76. its ehaviour eg me Comp high pressure Display of coolant pressure Comp High Pressure 11 9 bar Compressor output T outlet compressor 66 C Ur outlet compressor compressor output high pres Comp low pressure 2 3 bar sure Display of temperature sensor T1 T inlet compressor 0 C Comp low pressure Display of coolant pressure Compressor input T inlet compressor compressor input intake side Display of temperature sensor T2 diagnosis p2 Superheating of the coolant calculated from T2 and refrigerant circuit EE Only displayed when the com E e Subcooling of the coolant calculated from TA and i high pressure sensor Only displayed when the com Temp TEV inlet 10 C pressor is operating Temp TEV inlet Temperature at the inlet of the thermal expansion valve diagnosis p3 Current flow temperature Te 7 Central Heating Current return temperature T5 Current flow temp 27 C EEN pomp SE Geen Sioc CH pressure heating circuit pressure sensor Status of auxiliary heating ON OFF CH pump Off CH pressure 1 2bar Auxiliary heater Off diagnosis p4 Status of brine pump ON OFF m Heat Source T return source Temperature of the heat source Brine pump On T3 A iost T outlet evaporator Heat source temperature at the outlet of the heat pump T8 VWS only T outlet Evaporator 9 C Brine pressure Pressure sensor for heat source cir Brine pressure 1 5 bar cuit brine pressure
77. ly for additional electric heating and control dual circuit supply 8 Power supply for heat pump unblocked mains supply UAWN oO Control box lower level 9 Operating capacitor for the compressor 10 Safety thermostat STL for the auxiliary heating 11 Starting capacitor compressor 12 Starting current limiter PCB Additionally there are two coiled cables hanging inside the control box not shown here small two way plug connecting cable for the operating console large three way plug power supply for vrnetDIALOG A control cable for the vrnetDIALOG is also supplied accessories Installation instructions geoTHERM VWS 0020046310_01 6 4 Connecting the power supply Different types of power supply are provided for heat pumps by the power companies The heat pump can be operated with various types of mains feed Three types of connection are described on the following pages e Pass the power supply cable s through the elongated hole in the rear of the unit e Pass the cables through the unit through the approp riate strain relief clamps and on to the connection ter minals on the connector strip e Carry out the wiring of the connection as illustrated in the following wiring diagrams Cr Note The appliance covers are fitted after completion of the installation work 25 6 4 1 Unblocked mains supply Electroplan 1 1 online GO 230 V 50 Hz PE N L M 2 kW JA
78. ment using VR 11 characteristics the heating return line is defective see Appendix replace sensor Short circuit in the sensor or not properly plugged into the PCB 43 Error HP flow sensor T6 possible The internal temperature sensor on the heating flow line is defective or Short circuit in the sensor not properly plugged into the PCB 44 Error external sensor AF The outside temperature sensor or Check the ProE plug on the PCB check its connecting cable is defective or the connecting cable replace the sensor Short circuit in the sensor it is not connected correctly 45 Error DHW tank sensor SP The cylinder temperature sensor is defective or it is not connected Short circuit in the sensor correctly 46 Error HB flow sensor VF1 The upper sensor in the buffer cylinder is defective or it is not ee check Short circuit in the sensor connected correctly 47 Error HB return sensor RF1 The lower sensor in the buffer EE measurement using VR 10 3 A ek characteristics see Appendix replace cylinder is defective or it is not sensor Short circuit in the sensor connected correctly 48 Error flow sensor VF2 WW The contact temperature sensor operation VF2 in the heating circuit is Short circuit in the sensor possible defective or it is not connected Table 10 5 Fault induced shutdown 74 Installation instructions geoTHERM VWS 0020046310_01 Fault code Error text description Feeney Possible cause Rem
79. mp Maximum flow temp Description Factory setting Minimum Maximum temperature 15 C Setting the limiting temperatures min and max that the 43 C heating circuit can request Together with the maximum temperature the value for the floor protection switching is also calculated max HK temp Compr hysteresis 2K Pre loading time Pre loading time O hrs To take account of the inertia of the underfloor heating you can manually set a pre heat before the start of the programmed heating time CH run in HW mode2Or p m Max DHW load time 40r p m Max heating time Maximum time after which the cylin 20 min der heating operation switches back on when there is still a parallel demand present for the cylinder Max DHW load time Time after which the operation switches from cylinder loading to heating mode when there is a parallel demand for heating present 40 mins Compressor hyster Compressor hysteresis only for hydraulic plans 1 and 3 7K Forced switch on of the compressor when Current flow temperature lt Setpoint flow temperature Hysteresis Forced switch off of the compressor when Current flow temperature gt Setpoint flow temperature Hysteresis Compressor starts Comp starts h max allowable no of compressor starts 3 per hour 3 5 Max CH return temp HK46 C Max CH return temp HK Sets the return temperature li 46 C mits for compressor operation This
80. mperature sensor T8 or T3 Check the plug contact on the PCB and the cable defective harness check the sensor for correct position Temperature difference at the Too low a volume flow in the heat and function resistance measurement using heat source T3 T8 gt preset source circuit VR 11 characteristics see Appendix replace value Delta T T3 T7 No full dirt filter in source return line sensor This error message is Air in brine circuit Check the volume flow of the well pump brine deactivated as standard and can pump optimum temp difference approx 3 5 K only be activated via vrDIALOG Fit clean dirt filter parameter permitted temp Bleed the brine circuit difference 20 K difference means deactivated 22 Frost protection heat source Heat source pump defective Check heat source flow rate Check the plug contact on the PCB and the cable harness check the sensor for correct position and function resistance measurement using VR 11 characteristics see Appendix replace sensor Check the volume flow of the well pump brine pump optimum temp difference approx 3 5 K Clean the filter Bleed the brine circuit Table 10 3 Temporary malfunctions 72 Installation instructions geoTHERM VWS 0020046310_01 Fault code Error text description Possible cause Remedy 27 Coolant pressure too high Heat consuming side using too little heat Possible causes i Air in the heating system Bleed the hea
81. necessary 96 Error coolant pressure A pressure sensor in the cooling Check the plug contact on the PCB and sensor circuit is defective or not properly the cable harness check pressure plugged in sensor for correct functioning replace short circuit in the pressure pressure sensor sensor 97 no power for compressor Start up current limiter defective or Check starting current limiter incorrectly connected Remedy The auxiliary heating does not function even though it has been enabled by the controller e g when the supply has been blocked by the power supply company Power company blockage the heating or the domestic hot water cylinder do not reach the desired temperature The auxiliary heating is tied to a low rate tariff which has been blocked by the power company Check whether the auxiliary heating is on a low rate tariff and a power company blockage is in effect The safety thermostat STB on the auxiliary heating has tripped Release the STB by pushing the button Possible causes if the thermostat trips again Air in the heating system Blocked dirt filters in the heating system return line Bleeding heating circuit Clean the blocked dirt filters The heating circulation pump has stopped or is running too slowly check the heating circulation pump and replace if necessary Noise in the heating circuit Air in the heating circuit Bleeding heating circuit Dirt in the h
82. ng the display contrast 0 25 16 Display Installation completed A9 Exit mode gt Settable values gt yes Note regarding initial commissioning Do not set Exit mode to YES unless you are sure that everything has been set correctly Once you have confirmed with YES the controller switches to the graphics display The heat pump starts under its autonomous control system This menu will not appear again once YES has been selected Table 8 4 Parameters that can be set in the Code level cont 64 Installation instructions geoTHERM VWS 0020046310_01 8 9 Installer Menu Special functions can be selected only from the basic display To do so press the left hand dial El To change the parameter you must turn the following special functions can be selected Energy saving function Press El dial once e Party function Press H dial twice One time charging Press E dial 3 x dial The To activate one of the functions you merely have to se lect it In the energy saving function it is additionally ne cessary to enter the time until which the energy saving function regulation to set back temperature is to apply The basic display appears either after the function has elapsed reaching the time or by pressing the dial again El Display shown Description We 16 02 08 9 35 Saving function
83. olation device in the immedi ate vicinity of the heat pump Caution Risk of damage The electrical installation may only be undertaken by an authorised engineer Caution Risk of short circuits When connecting 230 V lines to the ProE plug do not strip the insulation back by more than 30 mm for safety re asons If you strip back by more than this there is a risk of short circuits to the PCB if the lines are not correctly atta ched in the plug 24 Caution Risk of malfunction The lines for the outside temperature sensor and the room thermostat carry small weak currents Interference from the environment can have an effect on the sensor lines and transmit incorrect information to the heat pump controller and for this reason the sensor lines must be run absolutely correctly Low current lines must be run at an ade quate distance from high current lines If low and high current lines are run in par allel a minimum distance of 25 cm ap plies for lengths greater than 10 m Furthermore take note For power connect the heat pump to a 230 V mains supply with one neutral and one earth conductor Fuse this connection as specified in the technical data Install the heat pump with a fixed mains connection The required conductor cross sections must be deter mined by a qualified technician using the values spe cified in the technical data for the maximum rated output In any case take into
84. om freezing Tank frost protection Prevents the connected tanks from freezing Checking the external sensors Checking the connected sensors during initial commis sioning using the basic hydraulic circuit that was entered previously Protection against loss of heating water Shuts down when there is a loss of heating water and switches on again when there is sufficient water pres sure Protection against loss of brine Shuts down if the brine pressure is too low and swit ches on again when the pressure is sufficient Floor protection circuit Overheating protection for the floor important for wooden floors Pump blocking protection Prevents seizing of pumps in the system Freeze protection function Shuts down the compressor if the temperature of the heat source falls below a predetermined value Installation instructions geoTHERM VWS 0020046310_01 Additionally there are further settable auxiliary func tions available see also Chap 8 3 Settable auxiliary functions Timer programmes To set the heating times for each heating circuit Holiday programming Programming of two holiday periods with date entry and set back temperature Party function Carries the heating and hot water times forward to the next shut off point Energy saving function Lowers the flow setpoint temperature for a presettab le period Screed floor drying For drying out screed floors Fixed value controlling Sets a fixed flow temperat
85. on instructions Regarding installation see Chapter 6 8 2 Installation instructions geoTHERM VWS 0020046310_01 5 Filling the heating and heat source systems The heating circuit and the brine circuit must be filled before the heat pump can be put into operation Note The heat pump cladding sections are only fitted after the filling and subse quent bleeding of the heating circuit Cr 5 1 Filling the heating circuit Caution Malfunction Fill the heating circuit via the integrated filling and draining valve so that the he ating circuit is completely bled If there is a DHW cylinder connected make sure that the 3 way valve is in the centre position If there is a DHW cylinder connected set the 3 way valve see Fig 2 6 Item 16 to the centre position Open all the thermostatic valves in the heating sys tem Connect a filling hose to a water tap Attach the free end of the filling hose to the filling valve see Fig 2 6 Item 8 Open the filling valve Turn the water tap on slowly and fill with water until the pressure gauge indicates a system pressure of ap prox 1 5 bar e Close the filling valve and detach the hose e Bleed the system again at the points provided e Re check the water pressure in the system repeat the filling process if necessary 5 2 Filling the brine circuit The brine fluid consists of water mixed with a heat transfer fluid concentrate As an additive we recom mend
86. oolant fill quantity in kg c practical limit in kg m c 0 31 kg m applies for R 407C This yields the following minimum installation space Heat pump type Coolant fill quantity Minimum kg installation space VWS 61 2 230 V 1 9 6 1 VWS 81 2 230 V 2 2 TA VWS 101 2 230 V 2 05 6 6 Table 4 1 Minimum installation space Installation instructions geoTHERM VWS 0020046310_01 4 3 Dimensions and clearances 1200 0 10 650 i 835 88 6 fee 600 gt Fig 4 1 Dimensions and clearances D Adjustable feet adjustable in height by 10 mm Installation instructions geoTHERM VWS 0020046310_01 13 Fig 4 2 Minimum clearances for installing the heat pump 4 4 Assembly Installation at a glance Remove packing material Remove transportation safety devices Transport the heat pump to the installation area Position and align the heat pump in the intended as sembly location Remove the upper cladding Remove the front cladding Connect the on site piping Carry out the electrical installation Fill the heating circuit Fill the heat source circuit Fit the cladding Fit the operating console Carry out the initial commissioning Fill out the start up checklist Hand over system to the user and familia
87. oolant must not be allowed to es cape into the atmosphere R 407 Cis a fluorinated greenhouse gas covered by the Kyoto Protocol with a GWP of 1653 GWP Global Warming Potential Before the appliance is disposed of the coolant it contains must be completely drained into a suitable vessel so that it can then be recycled or disposed of in accordance with the regulations The relevant work in connection with the coolant may only be carried out by offi cially certified specialists Coolant see identification plate for quantity may only be drained off and fresh coolant may only be added via the service valves All warranties become void if any approved replacement coolant other than the R 407 C recommended by Vaillant is used Installation instructions geoTHERM VWS 0020046310_01 4 Assembly and installation 4 1 Accessories You can fit the following accessories to expand the heat pump system You can find more detailed information on the installation of accessories in Chap 5 8 Mixer module VR 60 With the mixer module you can expand the control sys tem of the heating installation by two mixer circuits You can connect a maximum of six mixer modules VR 90 remote control unit You can connect a separate remote control unit for the first six heating circuits HC 1 HC 6 VR 10 standard sensor Additional sensors may be required e g as flow return collector or cylinder sensors depending on the configu ration of the
88. ore connecting the appliance By doing that residue such as welds cinder hemp putty rust rough dust and similar substances are removed from the pipes Otherwise such substances can be deposited in the appliance and cause da mage Caution To prevent leaks take care that no me chanical stresses are created on the connection lines The pipework installation must be carried out in ac cordance with the dimensional and connection dra wings in Fig 4 1 The installation must be performed by a specialist fit ter The applicable regulations must be observed during the installation Note Air in the heating system leads to im paired operation and reduces the heating output Fit bleed valves as required cr Installation instructions geoTHERM VWS 0020046310_01 Fig 4 12 Fitting the connection elbows Key to Fig 4 12 Heating feed Heating return Return to domestic hot water cylinder Heat source to the heat pump Heat source from the heat pump Insulating pad Blanking plugs NOUR WN Caution To avoid leaks take care that the cor rect seals are used on the connecting el bows Leaks can result if the seals with the metal support ring are not used in the heat source circuit Remove the blanking plugs from the appliance con nections 7 They are no longer needed and can be disposed of Fit the three connecting elbows 1 to 3 with the yel low green gaskets supplied with the
89. p has been star ted see Chap 7 4 Installation instructions geoTHERM VWS 0020046310_01 Check the filling level of the brine fluid Caution A Risk of damage The filling level is correct when the brine expansion tank is 2 3 full The installati on can be damaged if the filling level is too high Top up the brine fluid when the filling level has fallen so low that it is no longer visible in the expansion tank Fig 5 2 Fill level of brine expansion tank Key to Fig 5 2 1 Filling level too low 2 Filling level correct The filling level of the brine fluid can fall a little in the first month following commissioning of the system this is quite normal The filling level can also vary depending on the temperature of the heat source but under no cir cumstances should it fall so far that it is no longer visib le in the expansion tank Installation instructions geoTHERM VWS 0020046310_01 23 6 Electrical installation 6 1 Safety and installation information Danger Risk of electric shock Always switch off all power supplies be fore carrying out electrical installation work Make sure that they are secured against inadvertent switching on again Danger Risk of electric shock The electrical connection must be equip ped with a customer supplied isolation device having a contact separation of at least 3 mm on all lines e g a line pro tection switch It makes sense to fit this is
90. propylene glycol alternative ethylene glycol with corrosion inhibiting additives A DN 40 collector hose has a capacity of approx 1 litre per continuous metre The brine fluids that may be used differ greatly from re gion to region Please find out about this from the aut horities responsible Only the following brine media are authorised by Vail lant for operation of the heat pump max 30 ethylene glycol water max 33 propylene glycol water potassium carbonate water max 60 ethanol water 21 Caution Environmental hazard Leakage of brine media must not result in any contamination of the ground water or the soil Substances must be selected that are non toxic and biologi cally degradable WO Fig 5 1 Brine circuit Key to Fig 5 1 29 Brine pump 57 Stop valve 58 Bleed valve 59 Brine expansion tank 60 Expansion relief valve 61 Stop valve 62 Stop valve 64 Stop valve 65 Brine collecting tank 66 Brine reservoir 67 Filling pump WO Heat source circuit Mix the antifreeze used by Vaillant in Germany Aust ria and Switzerland 1 2 propylene glycol with water in the proportion 1 2 This offers frost protection down to 15 C Mix water and antifreeze to the specified concentrati on in a separate container e g plastic canister see Fig 5 1 Item 66 Every batch of the mixture must be carefully blended Check the mixing proportions of the brine fluid Vail lant recomm
91. r and where Auxiliary heater the auxiliary heating is hydraulically connected integration of the internal electric auxiliary heating in the heat intern Auxiliary heater pump S Kat WW HK external auxiliary heating available for DHW CH SC hot water and the heating circuit Out T aux htr on 5 C S e a no auxiliary heating no frost protection during gt Settable values emergency operation DHW external auxiliary heating available only for hot water The controller will only activate the auxiliary heating if it is enabled in Menu C7 Auxiliary heating and the following condition is satisfied Out T aux htr on The auxiliary heating is only en abled for post heating in the heating mode if the outside temperature is below this value Installation assistant a4 Freeze protect temp Minimum permissible heat 10 C Geothermal settings source outlet temperature EE EC 10 er If the temperature falls below this value error mes sage 21 22 or 61 62 appears and the compressor switches off gt Settable values Tool as You can check the heat pump actuators with the Off Component Test 1 component test This intervention lasts for a maxi CHK2 P gt on MUM of 20 minutes and ignores current controller ee de inputs during this time Afterwards the heat pump reverts to its previous operating condition SE Off Note If the compressor is activated the CH pump lt SK2 P gt Off Table 8 4
92. r starts Number of compressor starts Compressor hours 7 hours A Zus R f Aux heating hours Auxiliary heating operating Compressor starts 33 hours to date Aux heating hours 2 hours Aux heating starts Number of auxiliary heating Aux heating starts 21 starts Software release 13 Software release I O card PCB in the heat pump Software release of the User Interface display in 1 0 card 1 3 34 the operating console User Interface 1 2 22 VR 80 displays the software release when a VR 80 VR 80 is connected VR 90 displays the software release when a VR 90 is connected 14 Reset Reset of fault induced shutdowns all running processes are immediately interrupted the heat Reset No pump starts up again Code 1 0000 Code 2 FFFF Code 1 Code 2 No function Values must not be OOOO FFFF Codes accepted No changed No Table 8 4 Parameters that can be set in the Code level cont see Figs 1 and 2 in the appendix Installation instructions geoTHERM VWS 0020046310_01 61 Display shown Menu A Installation assistant Description You will be guided through the Installation Assistant Menus A1 and A2 during the initial commissioning of the heat pump The Installation Assistant appears automatically du ring initial commissioning Factory setting Language Set the local language gt Select Installation Al Language selection n Eea te Panouage gt GB English Du
93. rdness is more than 3 0 mmol l 21 05 e it should be softened You can use the Vail lant ion exchanger Art No 990 349 for this purpose Observe the enclosed instructions for use 3 2 Regulations rules guidelines Pay particular attention to the local specifications pro visions regulations and guidelines on by the following when setting up installing and operating the heat pump electrical connection supply system operator water distribution company geothermal energy utilisation integration of heat sources and heating installations energy conservation hygiene Installation instructions geoTHERM VWS 0020046310_01 3 3 Coolants The heat pump is delivered with an operational filling of R 407 C coolant This is a chlorine free coolant which does not affect the Earth s ozone layer R 407 C is neit her a fire hazard nor an explosion risk However maintenance work and interventions into the coolant circuit may only be undertaken by an expert technician with appropriate protective equipment Danger R 407 C coolant Do not inhale gases or vapours emana ting from leaks in the coolant circuit Risk to health Avoid contact with the skin and eyes Escaping coolant can cause frostbite if the exit point is touched R 407 C coolant presents no danger in normal use and under normal conditions With improper use however it can cause injury and damage Caution This appliance contains R 407 C coolant The c
94. ring the initial installation the controller always starts with this menu Installation Assistant gt Select Installation assistant A2 Urne hydraulic and electroplans must be set by the installer during initial commissioning Hydraulic scheme 3 The heat pump type has already been set at the fac Heat pump type 5 tory and may not be changed Electric Wiring Diagram 1 Accept change Yes Hydraulic plan 1 no buffer cylinder no DHW cylinder 2 with buffer cylinder no DHW cylinder 3 no buffer cylinder with DHW cylinder 4 with buffer cylinder with DHW cylinder See Figs 6 8 to 6 11 Heat pump type Type Description 29 VWS 61 2 230 V 30 VWS 81 2 230 V 31 VWS 101 2 230 V Electroplan 1 all on the high tariff see Fig 6 2 2 low tariff for the compressor see Fig 6 3 3 low tariff for the compressor and electric auxiliary heating see Fig 6 4 Accept change Yes No Yes means that all the set values will be saved Table 8 4 Parameters that can be set in the Code level cont 62 Installation instructions geoTHERM VWS 0020046310_01 Display shown Description Factory setting and the brine pump or well pump will also be turned on automatically UV1 DHW Changeover valve in DHW loading position UV1 HK Changeover valve in CH mode position Installation assistant A3 Auxiliary heating Determines whethe
95. rise him with it 4 5 Preparatory work in the installation area 3 Fig 4 3 Preparatory work in the installation area e Make sure that the substrate is sufficiently stable see Chap 4 2 Requirements for the installation site Drill at least two bore holes bearing in mind the di mensions of the unit and its connections 1 A separate bore hole is required for each heat source pipe Special pipe lead throughs must be used if there is a risk of ground water penetration follow the manufacturer s details Take account of the distances to the core barrels for the rest of the installation Pass the heat source pipes 2 from the outside into the installation area Lay the heat source pipes 2 centrally in the bore holes 1 to facilitate all round thermal insulation Seal the annular gap 1 as shown with foam insulation e g PE foam 3 Install diffusion tight insulation pipes from heat sour ces in cellar areas as condensation will otherwise form pipe temperature may be as low as 15 C Installation instructions geoTHERM VWS 0020046310_01 4 6 Requirements of the heating circuit The heat pump is only suitable for connection to a closed central heating installation To ensure trouble free operation the central heating installation must have been installed by authorised technical personnel in compliance with the applicable regulations A heat pump is suited to
96. rt You will find descriptions of the individual screens in the sections that follow them Controller operation is subdivided into three levels The Operator level is intended for the operator The Code level Menus C1 C9 D1 D5 1 15 and A1 A9 is reserved for the specialist and is protected against unintentional adjustments by means of a code input The following parameters can be displayed in the indivi dual menus but the values cannot be changed if no password is entered i e access to the code level is dis abled In Menus C1 to C9 you can set parameters for the vari ous functions of the heat pump for the heating circuit In Menus D1 to D5 you can operate and test the heat pump in diagnostic mode In Menus l1 to I5 you can obtain general information re garding the settings for the heat pump 48 In Menus A1 to A9 you are guided through the installati on menu during the initial commissioning of the heat pump Furthermore it is possible to display and select special functions such as the energy saving function To do this press the dial once twice or three times starting from the top level display see Fig 8 1 The third level contains functions for optimising the sys tem and can only be set by a specialist using vrDIA LOG 810 2 see Chap 8 10 Installation instructions geoTHERM VWS 0020046310_01 8 5 Operator level sequence diagram Reset to default settings We 16 02 08 Graphics display
97. s As thermal energy can only pass from a body at a high er temperature to a body at a lower temperature the coolant in the evaporator must have a lower tempera ture than the environmental heat source On the other hand the temperature of the coolant in the condenser must be higher than that of the heating water in order to be able to release the heat to it Installation instructions geoTHERM VWS 0020046310_01 These different temperatures are produced in the coo lant circuit by means of a compressor 2 and an expan sion valve 4 which are situated between the evapora tor and the condenser The coolant flows in vapour form from the evaporator into the compressor where it is compressed This causes the pressure and temperature of the coolant vapour to rise sharply The coolant then flows through the condenser where it releases its heat to the heating water by means of condensation It flows as a liquid to the expansion valve where it expands sig nificantly and in so doing loses much of its pressure and temperature This temperature is now lower than the brine water flowing through the evaporator The coo lant can thus take up more heat in the evaporator tur ning into vapour in the process and flowing to the com pressor The cycle starts again If required the electric auxiliary heating can be swit ched in by means of the integrated controller To prevent the formation of condensate in the interior of the unit the pipes of
98. start up current limiter Service water tank capacity Permissible rated overpressure Coolant type Filling quantity Permissible rated overpressure Performance figure at a brine temperature of O C and a heating flow temperature of 35 C COP BO W35 Performance figure at a brine COP B5 W55 temperature of 5 C and a heating flow temperature of 55 C Heating output at a brine BO W35 temperature of O C and a heating flow temperature of 35 C Heating output at a brine B5 W55 temperature of 5 C and a heating flow temperature of 55 C CE mark VDE GS mark Read the Operating and Installation Manual IP 20 Humidity protection class Ensure proper disposal at the end X of its useful life not household waste 21054500100028300006000001N4 Table 2 1 Explanation of symbols Serial Number 2 2 Functional principle Heat pump systems consist of separate circuits in which liquids or gases transport the heat from the heat source to the heating system As these circuits operate with differing media brine water coolant and heating water they are coupled to one another by means of heat exchangers In these heat exchangers the heat passes from a medium at a high temperature to a medi um at a lower temperature The Vaillant geoTHERM heat pump uses geothermal en ergy as its heat source 1 4 Electrical energy D 3 4 Environmental energ
99. struction Date Company Name Telephone Electrical installation Date Company Name Telephone Start up Date Company Name Telephone 82 Installation instructions geoTHERM VWS 0020046310_01 Planning the heat pump system Details Details regarding heat demand Heating load of the property Hot water supply Was a central DHW supply used Was the user s behaviour regarding hot water demand taken into account During planning was the increased hot water demand of Jacuzzis and showers taken into account Equipment used in the heat pump system Details Unit designations of the installed heat pump Details regarding the domestic hot water cylinder Domestic hot water cylinder type Domestic hot water cylinder capacity Information on buffer cylinder Volume of buffer cylinder Details regarding room thermostats VR 90 other none Details regarding the heat source system Ground probe number drilling depth spacing between probes Number of probes Spacing between probes Details Drilling depth of the probes Details regarding the ground collector Details Number of brine circuits Distance of the installed pipes from one another Pipe diameter Installation depth of the collector in the ground Length of the longest brine circuit Table 15 1 Referen
100. t OFF Mo Tu We Th Fr Sa Su Legionella start The preset time of day determines when the anti legionella function will start Off 04 00 The anti legionella function is carried out by the au xiliary heating on the preset day of the week at the preset time if the auxiliary heating has been activa ted For this purpose the controller sets the flow set point to 76 C 74 C 2K hysteresis The anti legio nella function is terminated when the current flow temperature at the cylinder has reached 73 C for a duration of at least 30 min or after 90 minutes if 73 C is not reached e g if hot water is drawn du ring this period Table 8 4 Parameters that can be set in the Code level cont Installation instructions geoTHERM VWS 0020046310_01 59 Display shown Menu D Perform diagnostics Description Factory setting In Menus D1 to D5 you can operate and test the heat pump in diagnostic mode The diagnostic menus cannot be exited with any set ting apart from Test no Menu D1 An auto reset occurs 15 minutes after the last button is actuated In the diagnostic mode the pre minimum and run on times of the compressor pumps and other components are not heeded Malfunctions can occur if the diagnostic mode is fre quently turned on and off Test no off heating mode hot water Set the ope EE circuit ge ee ee for the heat pump in order to test
101. t pump as shown in Fig 6 9 33 6 6 3 Mixer circuit with buffer cylinder Hydraulic plan 2 The unregulated underfloor heating circuits are opera ted by the external heating circuit pump from the buffer cylinder via a mixer The flow temperature sensor sits behind the external pump The heat pump responds to a demand for heat from the buffer cylinder 16 AF WO 230 V 230 V Fig 6 10 Hydraulic plan 2 Key to Fig 6 10 27 CH pump 30 Gravity brake 31 Control valve with position indication 32 Cap valve 33 Air separator Dirt filter 42a Expansion relief valve 42b Expansion vessel 46 Mixer valve AF Outdoor sensor VF1 Top temperature sensor buffer VF2 supply temperature sensor RF1 Bottom temperature sensor buffer WO Heat source circuit 34 Installation instructions geoTHERM VWS 0020046310_01 6 6 4 Direct heating operation and domestic hot water cylinder Hydraulic plan 3 The heat pump is connected directly to the underfloor heating circuit Control system is carried out using ener gy balance control by default see Chap 8 4 2 The VF2 flow temperature sensor must be connected floor pro tection circuit The heat pump also supplies a domestic hot water cylin der AF WO 230 V 230 V
102. tallation and Use Regulations 1998 and the manufacturer s instructions In the UK CORGI regis tered installers undertake the work in compliance with safe and satisfactory standards All unvented domestic hot water cylinders must be installed by a competent person to the prevailing building regulations at the time of installation G3 Terms and conditions apply to the warranty details of which can be found on the warranty registration card in cluded with this appliance Failure to install and commission this appliance in com pliance with the manufacturer s instructions may invali date the warranty this does not affect the customer s statutory rights 12 2 Vaillant Service To ensure regular servicing it is strongly recommended that arrangements are made for a Maintenance Agree ment Please contact Vaillant Service Solutions 0870 6060 777 for further details 77 13 Technical data Description Unit VWS 61 2 230 V VWS 81 2 230 V VWS 101 2 230 V Article number 0010005501 0010005502 0010005503 Height without connections mm 1200 Width mm 600 Depth without pillars mm 650 Depth with pillars mm 840 Weight with packaging kg 156 163 167 without packaging kg 141 148 152 ready for operation kg 147 155 160 Rated voltage S Heating circuit Compressor 1 N PE 230 V 50 Hz Control circuit 1 N PE 230 V 50 Hz
103. the heat source circuit and the coolant circuit are insulated If condensate forms this collects in a pan see Fig 2 6 Item 11 and is led away under the unit Drop formation under the unit is thus possible 2 3 Design of the heat pump The Vaillant geoTHERM heat pump is available in the following models The heat pump are above all diffe rent from each other in their output Type name Heating output kW Brine water heat pumps SO W35 VWS 61 2 230 V 6 0 VWS 81 2 230 V EN 10 5 VWS 101 2 230 V Table 2 2 Type summary You can read the type designation of the heat pump from the sticker see Fig 2 4 Item 1 on the pillar frame The heat pump is designed to implement all current electrical supply tariffs Installation instructions geoTHERM VWS 0020046310_01 Fig 2 4 Front view Key to Fig 2 4 1 Label with heat pump type designation 2 Operating panel 3 vrnetDIALOG mounting plate behind the pillar cladding Fig 2 5 Rear view Key to Fig 2 5 Return to domestic hot water cylinder Heat source to the heat pump Heat source from the heat pump Transportation handles Cable feedthrough for electrical connections Heating return Heating feed NOUR WN Assemblies Fi 16 g 2 6 Front view covers removed Key to Fig 2 6 OANDUBRWN BEE Electrical connections Controller PCB under cover plate Contac
104. ting Error shutdown heating Fault shutdown DHW Error shutdown DHW Malfunction Blocking error Operation interlock CH Comp overrun WW Comp overrun CH return too high Under critical operating conditions a warning message is displayed in both lower display lines These lines are empty when the operating conditions are normal Table 8 3 Settable parameters in the operator level ctnd Installation instructions geoTHERM VWS 0020046310_01 53 Display shown lt HK2 gt Parameters Hl 2 Operating mode hea ting gt Auto Set value day Night set back temp 22 C 15 C gt Select operating mode Description The room set target temperature is the tempera ture to which the heating should be regulated in the operating mode Heat or during the time slots The set back temperature is the temperature to which the heating is regulated during the set back period An individual set back temperature can be set for each heating circuit The set operating mode determines under which conditions the assigned heating circuit or hot water circuit should be regulated The following operating modes are available for hea ting circuits Auto The operation of the heating circuits alter nates between the Heating and Energy Saving ope rating modes in accordance with a settable timer programme Eco The operation of the heating circuits alternates between the Heating and Off operating modes in
105. ting system TE Oe Gra lec high pressure Defective heating pump or pum Check pump replace if necessar switch tripped at 30 bar 9 9 PUMP OC PUmnp PUMP LED y output has reduced The heat pump can start again Radiator heating without low loss Check the system after a 60 minute wait at the header or buffer cylinder earliest Buffer cylinder sensors VF1 and RE Check the sensor positions interchanged Too low a volume flow as a result of Check the system closing individual room controllers in an underfloor heating system Brief heating operation occurs after every DHW charge if the outside temperature falls below the outside temp switch off limit The control system checks if heating operation is required Domestic hot water cylinder with too Check power input low a power input installed Existing dirt strainers clogged or Clean dirt strainers incorrectly dimensioned Stop valves closed Open all stop valves Coolant flow rate too low e g Check coolant circuit thermal expansion valve TEV incorrectly adjusted or defective 28 Coolant pressure too low Heat source providing too little heat Possible causes 3 Air in the heat source circuit Bleed the heat source circuit The integral low pressure switch has tripped at 1 25 bar g Brine pump defective or pump output Check brine pump has decreased The flow in some circuits is not Adjust the brine circuits constant Recognisable by different degrees of icing on individ
106. tion mode Emergency Possible cause Remedy correctly 32 Error heat source sensor T8 possible The internal sensor for the source Check the plug contact on the PCB and outlet temperature is defective or the cable harness check the sensor for Short circuit in the sensor not properly plugged into the PCB correct position and function resistance measurement using VR 11 characteristics see Appendix replace sensor 33 Error heat circuit pressure The pressure sensor in the heating sensor circuit is defective or not properly short circuit in the pressure plugged in Check the plug contact on the PCB and Sensor the cable harness check pressure sensor 34 Error brine pressure sensor The pressure sensor in the heat E functioning replace pressure source circuit is defective or not i short circuit in the pressure properly plugged in sensor 40 Error comp outlet sensorT1 The internal temperature sensor on the high pressure side of the Short circuit in the sensor compressor is defective or not properly plugged into the PCB Al Error heat source sensor T3 possible The internal sensor for the source inlet temperature is defective or not Check the plug contact on the PCB and Short circuit in the sensor properly plugged into the PCB the cable harness check the sensor for correct position and function resistance 42 Error HP return sensor T5 possible The internal temperature sensor on measure
107. to connect an external brine pressure switch to the heat pump use the terminals 1 for this Installation instructions geoTHERM VWS 0020046310_01 Only if the VPA multi cylinder or some other multi cylinder is installed Connect the external 3 way valve for the multi cylin der to the terminals 2 Ga Note When using an external 3 way valve the proper functioning of the heat pump is only assured if the valve supplied with the VPA Multi cylinder is used 29 6 4 5 Simultaneous operation of the compressor and auxiliary heating PE N L AI BE D OQ D BE N ABB Ai12 30 01 RIDIN JE GE m Te T3 Fig 6 6 Simultaneous operation of the compressor and auxiliary heating In the as delivered condition simultaneous operation of the compressor and the auxiliary heating is barred If the supply mains permits it and comfort requires it you can enable simultaneous operation by fitting a jumper 1 30 Installation instructions geoTHERM VWS 0020046310_01 6 5 Controller PCB at a glance 2R e be EE EE EE DOO 888 822 822 GO OOOO 2 OO 2 82 GO OO 92 L N ZuAUNO L N O L NOJ L N ZuAuf N 12 1 2 1 2 1 2 pcroa i 2 1 2 ZH LP UV 1 ZP SK2 P HK2 P HK2 VF2 RF1 VFI SP BUS DCF AF EVU 1xZP C ki C C 15 al kJ
108. tor for electric auxiliary heating Safety thermostat STL for the auxiliary heating Electric auxiliary heating Condenser CH pump Fill drain valve for heating circuit Data badge Compressor Condensate pan Expansion Valve Fill drain valve for brine circuit Brine pump Evaporator 3 way valve Installation instructions geoTHERM VWS 0020046310_01 2 4 General notes on operating modes and func tions There are five operating modes available for the heating circuit and these can be used for time and temperature control of the heat pump see Chap 8 Control sys tem Three additional operating modes are available for the connected domestic hot water cylinder and circulation circuit During start up you will tell the heat pump which of the connection configurations listed in the appendix cor responds to your installation by entering the number of the corresponding hydraulic plan into the controller Thus all the operating parameters will be set to prede termined values so that the heat pump can work opti mally However you can individually set and adapt the operating modes and functions afterwards You will find all the information on operating modes au xiliary and special functions in Chapter 8 Control sys tem The heat pump is equipped with numerous automatic auxiliary functions to ensure trouble free operation see also Chap 8 2 Automatic auxiliary functions Frost protection Prevents the heating system fr
109. ts the VR 60 mixer modules also communicate with the heating controller via the eBUS When installing observe the same proce dure as for connecting the remote control units see Chap 5 8 1 The system structure can be seen in Fig 5 16 Observe the mixer module manual Le Ji UV V exe BUS eBus Fig 6 16 Connecting further mixer circuits 6 8 3 Connecting vrnetDIALOG The vrnetDIALOG communications unit accessory is fastened to the mounting plate provided on the frame of the operating console and connected to the control ler PCB Fig 6 17 Fitting vrnetDIALOG 38 Fig 6 18 Connecting vrnetDIALOG Fasten the casing of the vrnetDIALOG to the mounting panel of the operating console using the self tapping screws 1 and 2 from the accessory bag For fixing see also the vrnetDIALOG manual Pass the power supply cable present within the heat pump 5 through the opening in the upper front clad ding and connect it to the vrnetDIALOG unit Next pass the connecting cable 6 from the operating console through the opening in the upper front clad ding and connect to it the adapter cable from the ac cessory pack 4 for connecting between the vrnetDI ALOG unit and the heat pump The connector on the adapter cable is intende
110. tween the Heating and Off modes in accordance with a preset timer programme The heating circuit is switched off during the set back peri od provided the frost protection function which de pends on the outside temperature is not activated Energy saving the heating circuit is operated at the set back temperature independently of any preset timer programme Heating the heating circuit is operated at the flow temperature setpoint independently of any preset timer programme Off the heating circuit is out of operation provided that the frost protection function which depends on the external temperature is not activated The Auto On and Off operating modes are availa ble for connected domestic hot water cylinders Auto the commands for recharging the cylinder or enabling the circulating pump are given according to a preset timer programme On recharging is constantly enabled i e the cylinder is immediately re heated when needed and the circu lating pump is constantly in operation Off the cylinder is not heated and the circulation pump is not in operation Only when the storage tank temperature falls below 10 C is the storage tank reheated to 15 C for frost protection reasons 8 2 Automatic auxiliary functions Frost protection The controller is equipped with a frost protection func tion This function ensures that your heating installation is protected from frost in all operating modes
111. ual brine circuits Existing dirt strainers clogged or Clean dirt strainers incorrectly dimensioned Not all the required stop valves are Open all stop valves open Coolant flow rate too low e g Check coolant circuit thermal expansion valve TEV incorrectly adjusted or defective 29 Coolant pressure outside the Coolant pressure too high or too low See Errors 27 and 28 range If the error occurs twice in a row the heat pump cannot be started until after 60 min at the earliest all above mentioned causes possible Errors 27 and 28 Table 10 3 Temporary malfunctions cont Installation instructions geoTHERM VWS 0020046310_01 73 10 5 Blocking error The heat pump is shut down It can only be restarted by resetting the error after removing the cause of the fault see Menu 1 With the exception of Errors 90 and 91 these do not need to be reset The heat pump starts again when the cause of the error has been removed Emergency mode Depending on the nature of the malfunction there are settings that can be made to allow the heat pump to continue operating in an emergency mode by means of the integrated electrical heating until the fault is cleared either in heating operation display CH priori ty hot water operation display DHW priority or both display CH priority DHW priority see the fol lowing tables Emergency operation column Fault code Error text descrip
112. ure Anti legionella function Kills germs in the tank and in the pipes Quick test Test function for maintenance Remote maintenance Diagnostics and setting via vrDIALOG or vrnetDIALOG 3 Safety instructions and regulations 3 1 Safety instructions The heat pump must be installed by an approved techni cian who will be responsible for adhering to the existing standards and regulations We accept no liability for any damage caused by failure to observe these instructions When full the heat pump weighs roughly 140 195 kg Take this into consideration when transporting and set ting up the unit Pay particular attention to Chap 4 2 Requirements of the installation site before assembly Danger The coolant circuit is pressurised Fur thermore high temperatures can arise The appliance may only be opened and serviced by Vaillant factory customer service or by a qualified specialist tech nician Work on the coolant circuit may only be carried out by a qualified refrige ration engineer Danger Risk of electric shock Always switch off all power supplies be fore carrying out electrical installation work Make sure that they are secured against inadvertent switching on again Caution Risk of damage Do not add any antifreeze or corrosion protection agents to the heating water as seals and other components can be damaged as a result and this can lead to water leaks If the heating water ha
113. y linder sensor in a cylinder sensor tube or as a flow sen sor in a hydraulic switch Using the enclosed cable tie you can also attach it as a contact sensor to the heating flow or return pipes We recommend that the pipe toge ther with the sensor be insulated to ensure optimum temperature measurement lt 4 i T 5 Fig 6 8 VR 10 standard sensor 32 Installation instructions geoTHERM VWS 0020046310_01 6 6 2 Direct heating operation Hydraulic plan 1 The heat pump is connected directly to the underfloor heating circuit Control system is carried out using ener gy balance control by default see Chap 8 4 2 The VF2 flow temperature sensor must be connected floor pro tection circuit 16 AF WO 230 V 230 V Fig 6 9 Hydraulic plan 1 Key to Fig 6 9 30 Gravity brake 31 Control valve with position indication 32 Cap valve 33 Air separator Dirt filter 42a Expansion relief valve 42b Expansion vessel AF Outdoor sensor VF2 supply temperature sensor WQ Heat source circuit optional for hydraulic decoupling 27 Heating circuit pump with control line to the heat pump 39 Hydraulic switch Installation instructions geoTHERM VWS 0020046310_01 Cr Note Should hydraulic decoupling of the hea ting circuit be necessary then fit a low loss header and an external heating cir cui
114. y 4 4 Heating energy aN a N Maes 18 l A es gudds VAM a Fig 2 2 Utilisation of heat sources such as geothermal energy or ground water Cold water gt Heating system Additional heating Domestic hot water cylinder Switching valve Heating water circui Condenser Expansion valve 4 Evaporator 2 Compressor Coolant circuit Heat source circuit Heat source Fig 2 3 Mode of operation of the heat pump The system consists of separate circuits which are coup led to one another by means of heat exchangers These circuits are The heat source circuit by means of which the energy from the heat source is transported to the coolant cir cuit The coolant circuit which releases its heat to the hea ting water circuit by means of evaporation compressi on liquefaction and expansion The heating water circuit which supplies the heating and the hot water generation for the domestic hot water cylinder The coolant circuit is connected by means of the evapo rator 1 to the environmental heat source from which it extracts thermal energy At the same time the physical state of the coolant changes it evaporates The coolant circuit is connected by means of the condenser 3 to the heating system to which it releases the heat again In so doing the coolant becomes liquid again it con dense
115. you to optimise heating appliances and control systems and thus make use of their energy saving potential Both of them enable you to create a visual impression of the processes in your control system and influence them at any time The programmes enable you to record and graphically prepare system data to load device configu rations and change and save them online and to save in formation in the form of reports Using vrDIALOG 810 2 you can make all the settings for the heat pump as well as other settings for optimisation See Chap 8 10 Acceleration mode This operating mode simplifies the diagnosis of heat pump functions by speeding up the energy balancing in hydraulic plan 1 or 3 by a factor of 60 It is used as a test function See Chap 8 10 Fixed value controlling Using this function you can set via vrDIALOG a fixed flow temperature independently of the weather control led control system See Chap 8 10 Installation instructions geoTHERM VWS 0020046310_01 8 4 Description of the controller 8 4 1 Possible system circuits The controller can control the following system circuits a heating circuit an indirectly heated hot water storage tank a hot water circulation pump a buffer circuit In order to extend the system a buffer circuit can be used to connect up to six additional mixer circuit mo dules VR 60 accessories each with two mixer circuits The controller on the operating panel of the heat pump

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