User manual geoTHERM 6-10 kw user manual Size 3.73 MB
Contents
1. 24 5 10 2 Activating emergency mode 25 5 10 3 Errors malfunctions that you can remedy 25 5 10 4 Warning messages 5 10 5 Temporary malfunctions 5 10 6 Blocking error 6 Warranty and customer service 27 yA 1 111 ee 28 74 Technical datansiirrossa 28 7 2 Data badge Operating Manual geoTHERM VWS 0020045200_00 General information The Vaillant geoTHERM heat pumps in this manual are referred to in general as heat pumps and are available in the following models Type name Article number VWS 61 2 230V 0010005501 VWS 81 2 230V 0010005502 VWS 101 2 230 V 0010005503 Table 0 1 Type designations and article numbers The heat pumps state of the art appliances which have been constructed in accordance with recognised safety regulations Conformity with the applicable standards has been demonstrated DACH seal of approval VDE seal and Tested Safety With the CE mark we confirm as equipment manufac turers that the appliances in the geoTHERM range satis fy the requirements of the Directive on Electromagnetic Compatibility Council Directive 89 336 EC The appli ances meet the basic requirements of the Low Voltage Directive Council Directive 73 23 EEC Furthermore the appliances satisfy the requirements of EN 14511 Heat pumps with electrically driven compre2. For the owner Operating manual geoTHERM Heat pump VWS 6668 B B GB Contents General information 3 Data Dadga ia iee AEA E ARER Liisa 3 1 Notes on this manual 1 1 Storage of the documents 1 2 Symbols used 1 3 Applicability of the manual 2 Safety instructions 2 1 COOlANES snina 2 2 Prohibition on alterations 3 Notes on operation 5 3 1 Intended use 5 32 Requirements of the installation site 6 33 Cleaning and care 6 3 4 Checking the operational condition of the heatrpunmbpbDa uya ana a aniaya 6 3 4 1 Filling pressure of the heating system 6 3 4 2 Filling level and filling pressure of the brine circuit unine 6 3 4 3 Accumulation of condensate condensation water 7 3 5 Energy SAVING tipSaissisiiisssisereccrsirssiensrecsrsssissss 7 3 5 1 General energy SAVING tips 7 3 5 2 Economising by the correct use of the control system 3 6 Recycling and disposal 3 6 1 APpliANC ni ccccesesseesssseteseeees 3 6 2 Packagin
3. Operating Manual geoTHERM VWS 0020045200_00 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 op erating mode The holiday program can be activated only in auto and eco operating mode Connected cylinder charging circuits or circulation pump circuits are automatically switched to OFF op erating mode during the holiday timer programme Connected cylinder charging circuits or circulation pump circuits are automatically switched to OFF op erating mode during the holiday timer programme Prolonged periods of absence can be set in the dis play Programme holidays The target temperature during this period should be selected to be as low as possible During this period hot water generation is not in operation Factory setting Period 1 01 01 2003 01 01 2003 Period 2 01 01 2003 01 01 2003 Room Temp set point 15 C Basic data El 7 Date 21 04 08 Day of week Mo Time 09 35 gt
4. compressor is kept running or at standstill 5 3 3 Charging principle buffer cylinder The buffer cylinder is controlled depending on the sup ply set target temperature The heat pump heats when the temperature of the buffer cylinder head tempera ture sensor VF1 is smaller than the set target tempera ture It continues to heat until the buffer cylinder floor temperature sensor RF1 has reached the set target tem perature plus 2K 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 2K higher than the set target temperature premature reheating VF1 lt T VL set 2K 5 3 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 In the basic display on the graphic display press both dials at the same time for min 5sec After that you can select whether to reset only the timer programme or all values to the default settings 5 3 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 Controller operation is subdivided into four levels The operato
5. electric power from the heat pump in stallation then switch off the circuit breaker on your heating system Cr 5 9 Inspection An annual inspection maintenance of the unit by a spe cialist is a prerequisite for continuing operational safety reliability and a long working life Danger Inspections Maintenance work not car ried out can result in damage to proper ty and personal injury Have the inspection maintenance and repairs carried out only by a recognised expert technician company Only genuine Vaillant spare parts may be used for in spections maintenance and repair work to ensure the perfect long term working order of all functions of your Vaillant appliance 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 24 5 10 Troubleshooting and diagnosis 5 10 1 Error messages on the controller Error messages appear ca 20 seconds after the error has occurred on the display and are written in the error memory of the controller when the error has been present for ca 3min where the engineer can view it at a later date Error History H Fault number gt 1 Fault code 41 16 02 08 07 18 Error CH circuit Sensor T3 heat source Fig 5 3 Error message in the error memory Menu I1 The geoTHERM control system has various
6. general behaviour Ventilate correctly Do not leave windows or French windows tilted open but rather open the windows wide 3 or 4 times a day for 15 minutes and turn down the thermostatic valves or room thermostats while ventilating Do not block the radiators to ensure that heated air can circulate in the room Use a ventilation system with heat recovery The optimum exchange of air in the building is always guaranteed by the use of a ventilation system with heat recovery windows no longer need to be opened for ventilation purposes If necessary the air flow can be matched to your individual requirements with the ventilation unit s remote control Check that windows and doors are airtight Keep shut ters and blinds closed at night so that as little heat as possible is lost If a VR 90 remote control unit is installed as an acces sory do not obstruct it with furniture etc so that it can measure the circulating room air unhindered Think when using water for example take a shower instead of a bath promptly renew the seals on drip ping taps 3 5 2 Economising by the correct use of the control system Further economies can be made by the correct use of the control system on your heat pump The control of the heat pump helps you to make savings by The correct selection of the heating flow temperature Your heat pump controls the heating flow tempera ture depending on the room temperature you have s
7. is constantly measured If the heat source outlet temperature falls below a specific value the compressor temporarily shuts off with the error message 20 or 21 If these er rors occur three times in a row there is a fault induced shutdown For the geoTHERM VWS heat pumps you can set the value Default setting 10 C for the freezing protection in the installation assistant A4 Operating Manual geoTHERM VWS 0020045200_00 4 4 Design of the geoTHERM heat pump The heat pump is available in the following models The heat pump are above all different from each other in their output Type name Heating output kW VWS 61 2 230V 6 0 VWS 81 2 230V 8 1 VWS 101 2 230V 10 5 Table 4 1 Type summary Fig 4 3 Front view Key to Fig 4 3 1 Label with heat pump type designation 2 Operating panel Operating Manual geoTHERM VWS 0020045200_00 Fig 4 4 Rear view Key to Fig 4 4 Return to domestic hot water cylinder Coolant to heat pump Coolant from heat pump Transportation handles Cable duct for electrical connections Heating return Heating feed NOUR WN 11 5 Operation 5 1 Familiarising yourself with and operating the controller All programming of the heat pump is carried out by means of the two dials El and on the controller The dial Elis used to select the parameter by pressing and to alter the parameter by turning The dial El is use
8. temp difference 20K difference means deactivated 22 Frost protection heat source over source outlet Source outlet temperature too low lt parameter freezing protection in menu A4 27 Coolant pressure too high The integrated high pressure switch tripped at 30 bar g The heat pump cannot be restarted until after 60 min at the earliest 28 Coolant pressure too low The integrated low pressure switch tripped at 1 25 bar g 29 Coolant pressure outside the range If the error occurs twice in a row the heat pump cannot be started until after 60 min at the earliest Table 5 6 Temporary malfunctions 25 5 10 6 Blocking error Fault code Error text description es hia Errors could occur which result in the shutdown of the 72 Flow temperature too high for un _ heat pump derfloor heating E Flow temperature is for 15 min Fault code Error text description ieee higher than a set value max HK mo e temp compr hysteresis 2K 32 Error heat source sensor T8 possible 81 Coolant pressure too high Sorte cut inthe Sensor Error 27 has occurred three times in a row 33 Error heat circuit pressure sensor 83 Coolant pressure too low check short circuit in the pressure sensor heat source 34 Error brine pressure sensor possible re ee nas occurred threetime short circuit in the pressure sensor 84 Coolant pressure outside the range 40 Error comp outlet sensorT1 p
9. temperature of 35 C Fig 7 1 Example of an identification plate titi Thermal output with a brine tem B5 W55 perature of 5 C and a heating flow temperature of 55 C 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 OTOT seria Number 21054500100028300006000001N4 Table 7 2 Explanation of symbols 30 Operating Manual geoTHERM VWS 0020045200_00 Vaillant Ltd Nottingham Road E Belper Derbyshire B DE561JT Telephone 0845 602 2922 W www vaillant co uk E info vaillant co uk 0020045200_00 GB 082008
10. 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 displayed Table 5 1 Settable parameters in the operator level Operating Manual geoTHERM VWS 0020045200_00 Display shown Mon 21 04 08 16 49 Eli Current flow temp 28 C CH pressure 1 2bar Brine pressure 1 4 bar Heating only comp Warning message Warning message Description Energy input display Shows the energy extracted from the environment for 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 information 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 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 Pressure sensor heating circuit Pressure heat source Pressure of the heat source pressure sensor heat source circuit brine pressure Heating only comp this status message provides infor
11. 0 gt Select weekday block You can set the heating times for each heating cir cuit in the HK2 Timer programme menu Up to three heating times can be programmed per day or block The control system operates according to the heating curve and the room setpoint tempera ture The set back times can be dispensed with depending on the tariff agreement with power company VNB or the construction of the house Power companies offer their own discounted tariffs for heat pumps It can make sense on economic grounds to make use of the more favourable off peak power In low energy houses in Germany standard as from 1st February 2002 energy conservation regulation the room temperature reduction can be dispensed with owing to low heat losses The desired set back temperature must be set in menu 2 Mon Sun 0 00 24 00 Table 5 1 Settable parameters in the operator level ctnd Operating Manual geoTHERM VWS 0020045200_00 Display shown Description Factory setting 3 j i i Mon Fri DHW loading E 5 You can set the times at which the domestic hot Eo 2 SO BES Time programme water cylinder is heated in the WW Timer Pro gt Mon gramme menu Sat Up to three times can be programmed per day or 1 06 00 22 00 N Wen prog per ay ae 2 i 3 8 9 9 Su f 7 30 22 00 gt Select weekday block The hot water generation should only be active at times when really hot wa
12. 0020046310 Other applicable documents are all the manuals that describe the operation of the heat pump as well as other manuals for all the accessories used 1 1 Storage of the documents Please store this operating manual and all related docu ments in such a way that they are available whenever required You can store the documents inside the pillar cover Lah ee Fig 1 1 Removing the pillar cover 1 2 Symbols used The following hazard classification symbols are used for information activities and energy saving tips in this operating manual Danger Immediate risk of serious injury or death Danger Danger of burning and scalding Caution Potentially dangerous situation for the product and environment Note Useful information and instructions oy gt P P This symbol points you to energy saving tips You can put this setting into effect by means of the heat pump control system among other things e Symbol for a necessary task 1 3 Applicability of the manual This operating manual applies exclusively to units with the following article numbers 0010005501 0010005502 0010005503 The part number of your unit can be obtained from the identification plate 2 Safety instructions Observe the following safety instructions and regula tions when operating the heat pump e Take advantage of the extensive instruction in the operation of the heat pum
13. 01 2 230 V Article number g 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 230V 50 Hz Control circuit 1 N PE 230 V 50 Hz Auxiliary heating 1 N PE 230 V 50 Hz Fuse slow blow Connected mains supply Alternative operation Supply status 4kW A 16 20 25 25 Parallel operation A 25 35 35 50 Dual circuit supply WP charge rate Individual compressor A 16 25 25 booster heating 2 4kW individual A 16 20 16 20 16 20 Dual circuit supply special charge rate Alternative operation Supply 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 power min for B 5W35 kW 1 4 1 8 2 4 max for B20W60 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 G11 4 diameter 28 Heat source circuit brine circuit Brine type Ethylene glycol 30 max operating pressure MPa bar 0 3 3 min inlet temperature e 10 max inlet temperature SG 20 No
14. C presents no danger in normal use and under normal conditions With improper use however it can cause injury and damage Cr 2 2 Prohibition on alterations Danger Inappropriate alterations can cause inju ries Under no circumstances should you attempt to make changes or alterations to the heat pump or other parts of the heating and hot water system yourself The prohibition applies to the geoTHERM heat pumps the vicinity of the geoTHERM heat pumps the supply lines for water and power For alterations to the heat pump or its peripherals you must call on a qualified engineer Do not damage or remove seals or locking devices on components Only suitably qualified heating engineer or our customer service may remove sealed compo nents Operating Manual geoTHERM VWS 0020045200_00 3 Notes on operation The Vaillant geoTHERM heat pumps are state of the art appliances which have been constructed in accordance with recognised safety regulations and must be installed by a qualified expert technician in compliance with the existing regulations rules and directives Danger Risk to life as a consequence of using unqualified personnel Installation inspection and repair may only be carried out by a qualified engi neer In particular working on the elec trical components and on the coolant circuit requires an appropriate qualifica tion 3 1 Intended use The Vaillant heat pumps are buil
15. Settable values You can set the current date the day of the week and the current time if DCF radio clock reception is not possible in the Basic Data menu These settings apply to all connected system compo nents Code layer 8 Code number 0000 gt Set figures To access the Code level Installer level the appro priate code must be entered To view setting parameters without entering the code you must press the dial F once You can then view all parameters of the code level by turning the dial El but not change them As operator without en tering the code you can view all menus in the code level however not modify them Caution Do not try to access the code level by making arbitrary entries in the code level Uninten tional modification of the system specific parame ters can cause malfunctions or damage to the heat pump Table 5 1 Settable parameters in the operator level ctnd Operating Manual geoTHERM VWS 0020045200_00 21 5 6 Installer Menu Special functions can be selected only from the basic display To do so press the left hand dial El You must turn the dial tJ to alter the parameter The following special functions can be selected Energy saving function Press dial E 1 x e Party function Press dial E 2 x One time charging Press dial El 3 x To activate one of the functions you merely have to sel
16. ating Manual geoTHERM VWS 0020045200_00 15 5 5 Displays in the user level The individual menus on the controller are described and explained below 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 10 C Source inlet temperature Temperature sensor in the example 9 C 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 heat ing system gt gt gt Right flashes when energy is being fed to the heating system e g only from the electric auxil iary heating The heat pump is in the CH mode Moreover the heating flow temperature is displayed in the example 30 C The symbol indicates
17. d to select the menu by turning and to activate special functions by pressing Vaillant Basic data Date Day of week Time Fr 16 55 Fig 5 1 Operating overview Key 1 Menu name 2 Cursor indicates the selected parameter 3 Menu number 4 Dialt 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 Typical operating process operator level O Q Turn the dial E until the menu required has been selected Turn the dial H until the parameter to be modified has been selected Press the dial H to mark the parameter to be modified The parameter background is darkened Turn the dial H to modify the parameter setting value Press the dial E to mark the setting value to be accepted fiai o N Operating Manual geoTHERM VWS 0020045200_00 5 2 Setting menus and parameters setting to date modified setting Select menu gt Set weekday Holiday programming El 6 Basic data 7 for cpl System Or Period of time Biel dist Setect Date gt 21 04 08 Turn the ial Selec 1 gt 06 01 08 08 01 08 menu e g from menu Day of week Mo 2 14 01 08 30 01 08 6 t
18. e must be dimensioned such that the heat pump can be properly installed and maintained e Ask your heating engineer which currently applicable national building regulations must be observed The installation site must be dry and generally frost proof 3 3 Cleaning and care Do not use any scouring or cleaning agents that could damage the cladding Note Clean the exterior of your heat pump with a damp cloth and a little soap Cr 3 4 Checking the operational condition of the heat pump In contrast to heaters based on fossil fuels no expen sive maintenance work is necessary for the Vaillant geoTHERM heat pump Note Have your installation checked regularly by an expert technician company to ensure efficient operation of your heat pump C 3 4 1 Filling pressure of the heating system The filling pressure of the heating installation should be checked at regular intervals The filling pressure of the heating installation can be checked from the reading on the heat pump controller see sect 5 5 It should be be tween 1 and 2bar If the water pressure falls below O 5bar the heat pump will be shut down automatically and an error message will be displayed Caution Risk of damage from water escaping from leaks in the system Close the cold water stop valve in the event of leaks in the hot water pipework In the event of leaks in the heating installation switch off the heat pump to avoid any further leaki
19. ect it In the energy saving function it is additionally necessary 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 E again Display shown Description We 16 02 08 9 35 Saving function Energy saving enabled gt Select end time With the saving function you can set back the heating times for a set table period Enter the time for the end of the saving function in the format hh mm hour minute We 16 02 08 9 35 Party function enabled Party function With the party function you can continue the heating and hot water times beyond the next switch off time up to the next heating start The 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 DHW tank loading enabled One time charging This function allows you to charge the hot water cylinder once re gardless of the current time program Table 5 2 Special functions 22 Operating Manual geoTHERM VWS 0020045200_00 Reset to default setting Keep dial El and dial H 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 s
20. et Therefore select a room temperature that is just sufficient for your comfort for example 20 C Every degree over and above that means an increase in en ergy consumption of around 6 per annum For floor heating use heating curves of lt 0 4 For radi ator heating we recommend that they are laid out to manage with a maximum flow temperature of 50 C at the lowest outside temperature this corresponds to heating curves of lt 0 7 An appropriate setting of the hot water temperature Only heat hot water as much as is required for con sumption Any further heating results in unnecessary power consumption and hot water temperatures of more than 60 C also lead to increased lime scale pro duction We recommend that hot water generation be achieved without the electric auxiliary heating by this method the maximum hot water temperature is de termined by the high pressure cut out in the heat pump cooling circuit This cut out corresponds to a maximum hot water temperature of approx 58 C Setting of individually suited heating times Select the correct operating mode For the times that you are asleep or away we recom mend that you switch the heating to set back mode Heat uniformly By means of a meaningfully constructed heating pro gramme you can arrange for all the rooms in your house to be uniformly heated in accordance with your pattern of use Set the thermostatic valves You can adjust the room temperature to suit your
21. f the transport packaging to the qualified servicing company which installed the appliance 3 6 3 Coolants The Vaillant heat pump is filled with R 407 C coolant Danger Risk of injury from freezing as a result of contact with the R 407 C coolant Escaping coolant can cause freezing if the exit point is touched Do not inhale gases or vapours emanat ing from leaks in the coolant circuit Avoid contact with the skin and eyes The disposal of coolant must only be by qualified specialists Cr Note R 407 C presents no danger in normal use and under normal conditions With improper use however it can cause inju ry and damage Operating Manual geoTHERM VWS 0020045200_00 4 Equipment and functional description 4 1 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 energy as its heat source 1 4 Electrical energy D FS I hi 5 gt gt Fig 4 1 Using a geothermal heat source The system consists of separate circuits which are cou pled w
22. g aseisiin 36 3 COOlAMES nenen eenen a Qua a Ei 4 Equipment and functional description 9 4 1 Functional principle 9 4 2 Operation mode of the coolant circuit 9 43 Automatic auxiliary functions 10 4 4 Design of the geoTHERM heat pump 11 5 Operation k S N k Sl Su 2 12 5 1 Familiarising yourself with and operating the controller 12 5 2 Setting menus and parameters 13 5 3 Description of the controller 5 3 1 Possible system circuits 5 3 2 Energy balance Controller 5 3 3 Charging principle buffer cylinder 14 5 3 4 Resetting to factory settings 14 5 3 5 Controller structure 14 5 3 6 Setting energy saving functions 14 54 Flow diagralfiuzu sl n snieni 15 5 5 Displays in the user level 16 5 6 Installer Menu 22 5 7 Starting up the heat pump 24 5 8 Shutting down the heat pump 24 5 9 ns petti Messner k a a au a a 24 2 5 10 Troubleshooting and diagnosis 24 5 10 1 Error messages on the controller
23. hown Description We 21 04 08 9 35 The default settings are re established 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 hut d Th t d t suffer d Time programme NO YES snu own e system aoes not sutter damage Everything NO YES Press both dials for at least 5 seconds to request the menu default setting gt Settable values Table 5 3 Re establishing the default setting Operating Manual geoTHERM VWS 0020045200_00 23 5 7 Starting up the heat pump The start up of your heat pump was carried out after installation by your expert technician company A repeated start up will not even be necessary in the event that your heat pump disconnects from the mains unexpectedly for example as a result of a voltage drop power cut circuit breaker defective circuit breaker de activated Your geoTHERM heat pump has an automat ic reset function i e the heat pump reverts automatical ly to its starting condition provided no fault is present in the heat pump itself Find out what to do in the event of a fault in Chap 5 10 5 8 Shutting down the heat pump A shutdown of the heat pump is only possible via the operating panel by deactivating heating and hot water generation in the respective menus see Sect 5 4 User Level Displays Note Should it be necessary to remove all
24. in dividual requirements and ensure effective operation of your heating installation using the thermostatic valves in combination with a room temperature regu lator weather compensator The operating times of the circulation pump can thus be optimally matched to the actual need Consult a qualified engineer He will adjust your heat ing installation to suit your personal requirements You will find these and other energy saving tips in Chap 5 5 The controller settings that can potentially save energy are described there 3 6 Recycling and disposal Both your heat pump and all its accessories and associ ated transport packaging consist overwhelmingly of raw materials that can be recycled and thus have no place in your household waste Cr Note Please observe the applicable national legal regulations Make sure the old appliance and any accessories are disposed of properly Caution Environmental hazard due to improper disposal The disposal of coolant must only be by qualified specialists 3 6 1 Appliance If your heat pump is identified with this sym bol it does not belong with your household waste at the end of its useful life As this heat pump is not covered by the law regarding the marketing return and environ mentally friendly disposal of electrical and electronic equipment ElektroG in Germany free disposal at a municipal collection point is not provided 3 6 2 Packaging Leave the disposal o
25. ing circuit should only be carried out by authorised specialists Operating Manual geoTHERM VWS 0020045200_00 29 7 2 Data badge Explanation of the symbols on the identification plate O Rated voltage compressor O A Rated voltage pumps controller VWS 61 2 230 V IT FR NO LV LT EE ES UK TU Rated voltage auxiliary heating IP 20 J 1 N PE 230V 50Hz P Vaillant GmbH Remscheid Germany Serial No 21054500100028300006000001N1 Rated maximum power O AJ 1 N PE 230V 50Hz Max LU UNPE 290V 50Hz Rated power compressor pumps PC O w and controller P 68 kW Max POQ 28 kW P LLL Rated power auxiliary heating PLO 7 l Start up current without start up current limiter l oo A E ford Start up current with start up current limiter I xt _ MPa bar Service water tank capacity Z R407 C Permissible rated overpressure X 19 kg 2 9 29 MPa bar Coolant type O X Filling quantity COP BO W35 4 2 za Permissible rated overpressure COP BENIS Performance figure at a brine tem BO W35 6 0 kW COP BO W35 perature of 0 C and a heating flow B5 W55 is w temperature of 35 C Performance figure at a brine tem COP B5 W55 perature of 5 C and a heating flow temperature of 55 C N4 Thermal output with a brine tem k 01 lt C sy UNN x 210545001000283000060000 BO W35 perature of O C and a heating flow N dii
26. ion 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 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 O 6bar on the pres sure gauge for more than one minute a warning appears in menu El Floor protection circuit for all hydraulics without buffer cylinder e g in hydraulic plans 1 and 3 If the measured flow temperature in the underfloor heating circuit continuously exceeds a value for more than 15 minutes the heat pump switches off and issues an error message 72 When the heating flow tempera ture falls below this value again and the error has been reset the heat pump switches back on 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 Phase monitoring The sequence and existence of phases clockwise rotat ing field on the 400 V voltage supply are continuously monitored during commissioning and operation If the sequence is not correct or if a phase breaks down the heat pump is switched off due to the error to avoid damage to the compressor Freezing protection function The outlet temperature of the heat source
27. ith 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 heating water circuit by means of evaporation compression liquefaction and expansion The heating water circuit which supplies the heating and the hot water generator for the domestic hot water cylinder Operating Manual geoTHERM VWS 0020045200_00 4 2 Operation mode of the coolant circuit Cold water gt Heating system Additional heating Domestic hot water cylinder Switching valve Heating water pump Heating water circui 4 3 t Condenser 2 I Expansion valve Compressor ID Coolant circuit 4 Evaporator Bri pump 4 Heat source circuit Heat source Fig 4 2 Mode of operation of the heat pump The coolant circuit is connected by means of the evapo rator 1 to the geothermal 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 denses As thermal energy can only pass from a body at a higher temperature to a body at a lower temperature the coolant in the e
28. ity hot water priority see the following tables column emergency operation 5 10 3 Errors malfunctions that you can remedy Possible cause Remedy Dirt in the heating Bleeding heating circuit Faulty pump Malfunction sign Noise in the heating circuit Air in the heating circuit Table 5 4 Other malfunctions 5 10 4 Warning messages The following warning messages do not cause a mal function in the operation of the heat pump The heat pump is not shut down Take note of the error code and text and discuss this during the next inspection with the expert technician Fault code Error text description Overheating on compressor pressure side 36 Low brine pressure Table 5 5 Warning messages no shutdown Operating Manual geoTHERM VWS 0020045200_00 5 10 5 Temporary malfunctions The heat pump is shut down temporarily and starts up again independently when the cause of the fault is re moved Depending on the error the heat pump switches back on automatically after 5 or 60 minutes Take note of the error code and text and discuss this during the next inspection with the expert technician Fault code Error text description 20 Frost protection heat source monitoring source outlet Temperature difference of the heat source gt set value permitted temp difference This error message is deactivated as standard and can only be activated via vrDIALOG parameter permitted
29. malfunction types 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 after the cause of the fault has been removed by the expert technician and the error reset Moreover other errors malfunctions can occur on the unit or system Caution Heat pump malfunction Immediately notify your expert techni cian if error messages appear on the dis play on the operating panel which are not listed in tables 5 4 to 5 7 Do not attempt to remove the source of the malfunction yourself Note Not all of the following listed malfunc tions have to be dealt with by an expert technician If you are unsure whether you can reme dy the fault yourself or not or if the error occurs repeatedly contact your expert technician or Vaillant customer service Cr Operating Manual geoTHERM VWS 0020045200_00 5 10 2 Activating emergency mode Depending on the type of malfunction the expert techni cian can set the heat pump to continue operation in emergency mode via an integrated electric auxiliary heating until the cause of the error is remedied and ei ther for heating operation display heating priority for hot water operation display hot water priority or for both display heating prior
30. mation on the current operating status The following are possible 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 heating 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 5 1 Settable parameters in the operator level ctnd Operating Manual geoTHERM VWS 0020045200_00 17 Display shown HK2 Parameters E 2 gt Auto Set value day Night set back temp Operating mode heating 3 22 C 15 C gt Select operating mode Description Factory setting Room set target The room set target temperature is the tempera temp 20 C ture to which the heating should be regulated in the operating mode Heat or during the time slots Note Select a room temperature that is just high enough to ensure your personal well being e g 20 C Each degree over and above the set value means an increase in energy consumption of around 6 per an
31. minal flow rate dT 3K I h 1453 1936 2530 Residual head dT 3K mbar 381 332 263 Nominal flow rate dT 4K I 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 e 25 max flow temperature C 62 Nominal flow rate dT 5K I h 1061 1375 1803 Residual head dT 5K mbar 382 339 254 Nominal flow rate dT 10K I h 517 697 848 Residual head dT 10K mbar 486 468 450 Electrical power consumption pump Ww 93 93 93 refrigerant circuit Coolant type i R 407 C Quantity kg 1 9 2 2 2 05 Number of revolutions EX valve 9 0 9 0 9 0 Permissible operating overpressure MPa bar 2 9 29 Compressor type Scroll Oil Ester Oil filling quantity 1 3 1 45 1 45 Table 7 1 Technical data 28 Operating Manual geoTHERM VWS 0020045200_00 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 Power consumption Performance figure COP B5W55 Heating output Power consumption Performance figure COP Internal sound level Conforms to safety regulations Low Voltage Directive 73 23 EWG EMC Directive 89 336 EWG EN 60335 ISO 5149 Table 7 1 Technical data cont Caution A R 407 C is a chlorine free coolant which does not affect the ozone layer Never theless any servicing work on the cool
32. ng Have the leaks repaired by an expert technician Note The cold water stop valve is not part of the heat pump scope of supply It is fit ted on site by your heating engineer He will explain the location and handling of the component to you Cr 3 4 2 Filling level and filling pressure of the brine circuit Check the brine level or pressure in the brine circuit at regular intervals The filling pressure of the brine circuit Pressure Heat Source can be checked from the rea ding on the heat pump controller see sect 5 5 It should be between 1 and 2 bar If the brine pressure falls below 0 2 bar the heat pump will be shut down automatically and an error message will be displayed Caution Risk of damage from brine escaping from leaks in the system In the event of leaks in the brine circuit switch off the heat pump to avoid any further leaking Have the leaks repaired by an expert technician Caution The brine circuit must be filled with the correct quantity of fluid otherwise the system can be damaged If the filling level of the brine has fallen so far that it is no longer visible in the expansion tank you must have the brine refilled Operating Manual geoTHERM VWS 0020045200_00 DL Fig 3 1 Filling level of the brine expansion tank It is normal for the filling level of the brine to fall a little in the first month after the start up of the system The filling le
33. num Set back temp 15 C 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 heating circuits Auto The operation of the heating circuits alter nates between the Heating and Energy Saving oper ating modes in accordance with a settable timer pro gramme Eco The operation of the heating circuits alternates between the Heating and Off operating modes in 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 Table 5 1 Settable parameters in the operator level ctnd Operating Manual geoTHERM VWS 0020045200_00 Di
34. o7 Time 09 35 Room Temp setpoint 12 C gt Set start day gt Set day i 7 Select parameter 3 Basic data E 7 Basic data 7 4O AAA Date gt 21 04 08 Sa Faia lect tne Pate 21 04 08 Turn the ial select the Day of week Mo parameter to be modified Day of week gt Mon Time 09 35 e g from line 1 day to line Time 09 35 2 weekday in this exam ple continue to turn gt Set day 3 snap in points gt Set weekday P Modify parameter weekday 7 Base data E from Monday to Tuesday Basle dara E Dat 21 04 08 G ate 04 DS S Date 21 04 08 Day of week gt Mon Push the dial Day of week gt Tues Time 09 35 Select parameter Time 09 35 O WY gt Set weekday Turn the dial Modify parameter pi ve Push the dial B Accept modification 5 3 Description of the controller 5 3 1 Possible system circuits The heating engineer will have set all the operating pa rameters to preset values during commissioning so that the heat pump can function optimally However you can individually set and adapt the operating modes and functions afterwards Operating Manual geoTHERM VWS 0020045200_00 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 mixe
35. ossible Error 29 has occurred three times MENN in a row Short circuit in the sensor 90 Heating system pressure too low _ 41 Error heat source sensor T3 possible Pressure lt 0 5 bar s Heat pump switches off and starts Short circuit in the sensor up automatically when the pres sure increases to over 0 7 bar 42 Error HP return sensor T5 possible 91 Brine pressure too low possible Short circuit in the sensor Pressure lt 02 Dar Heat pump switches off and starts 43 Error HP flow sensor T6 possible up automatically when the pres Shert Cieeuit in thessensor sure increases to over 0 4bar n 96 Error pressure sensor possible 44 Error external sensor AF possible refrigerant circuit shorkateut inthe sentor short circuit in the pressure sensor 97 No power for compressor possible 45 Error DHW tank sensor SP possible Short circuit in the sensor Table 5 7 Fault induced shutdown ctnd 46 Error HB flow sensor VF1 possible e Consult your expert technician about doing this Short circuit in the sensor Cr Note 47 Error HB return sensor RFI possible Only an expert technician can remedy the fault and reset the error code Short circuit in the sensor 48 Error flow sensor VF2 WW operation ue f asih Once the expert technician has remedied the error and Short circuit in the sensor reset the error he can restart the heat pump 52 Sensors are not suited to the hydraulic plan 60 Frost protection heat source moni possible toring source outlet Error 20 has occu
36. p provided by your specia list technician e Carefully read through this operating manual e Only carry out activities that are described in this operating manual Danger Risk of burning as a result of contact with heat pump components High temperatures can appear on heat pump components Do not touch any uninsulated pipes on the heat pump Do not remove any of the cladding sections apart from the pillar cover see Ch 1 1 2 1 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 nei ther a fire hazard nor an explosion risk Caution This appliance contains R 407 C coolant The coolant 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 Operating Manual geoTHERM VWS 0020045200_00 Danger Risk of injury from freezing as a result of contact with the R 407 C coolant Escaping coolant can cause freezing if the exit point is touched Do not inhale gases or vapours emana ting from leaks in the coolant circuit Avoid contact with the skin and eyes Note R 407
37. r circuit mod ules VR 60 accessories each with two mixer circuits The controller on the operating panel of the heat pump is used to programme the mixer circuits In order to operate under comfortable conditions you can connect the remote control units VR 90 for the first eight heating circuits 13 5 3 2 Energy balance controller The energy balance controller is only applicable to hy draulics without buffer cylinder 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 1K temperature difference in the supply from 1 Minute K Kelvin The heat pump starts up at a defined heat deficit and only switches off again when the supplied heat is equal to the heat deficit The larger the preset negative numerical value is the longer the periods for which the
38. r level is specified for the operator In Sect 5 4 all of the controller s displays are shown as a flow diagram A detailed description of the displays is contained in Sect 5 5 The code level menu C1 C9 D1 D5 11 15 and A1 A9 is reserved for the engineer and protected by a code to protect it from unintentional modification As the operator you can scroll through the menus of the code level and view the system specific setting parame ters however without changing the values In the menus C1 to C9 the engineer sets system specific parameters The menus D1 to D5 enable the engineer to operate and test the heat pump in the diagnosis mode In menus l1 to I5 you are given general information on the settings of the heat pump Menus A1 to A9 take the engineer through the installa tion menu to put the heat pump into operation The display and selection of special function e g the energy saving function is also possible for the operator Instructions are given in Sect 5 6 as to how to activate the special functions The fourth level contains functions for the optimisation of the system and can only be set by the engineer using vrDIALOG 810 2 5 3 6 Setting energy saving functions Also described in Chap 5 5 are heat pump settings that will enable a reduction in your energy costs This is achieved by optimum setting of the heat pump s weath er controlled energy balance controller This symbol points you to these energy
39. rmation under the heat pump is thus possible 4 3 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 If the outside temperature falls below a value of 3 C a set back temperature is automatically programmed for each heating circuit Cylinder frost protection This function starts automatically when the actual tem perature of the cylinder falls below 10 C The cylinder is 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 pressure is over 0 7 bar on the pressure gauge Pump seizing and valve seizing protection To prevent the sticking of the heating circulation and brine pump or of the hot water diverter valve UV1 the pumps and the valve which have not been in operation for 24 hours are switched on every day for approx 20sec Protect
40. rred three times in a row 62 Frost protection heat source moni possible toring source outlet Error 22 has occurred three times in a row Table 5 7 Error shutdown 26 Operating Manual geoTHERM VWS 0020045200_00 6 Warranty and customer service 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 Installation and Use Regulations 1998 and the manufacturer s instructions In the UK CORGI registered installers undertake the work in compliance with safe and satisfactory stan dards All unvented domestic hot water cylinders must be installed by a competent person to the prevailing build ing 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 included with this appliance Failure to install and com mission this appliance in compliance with the manufac turer s instructions may invalidate the warranty this does not affect the customer s statutory rights 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 Operating Manual geoTHERM VWS 0020045200_00 27 7 Appendix 7 1 Technical data Description Unit VWS 61 2 230 V VWS 81 2 230 V VWS 1
41. s sors heating specifications for appliances for space heating and for warming drinking water as well as EN 378 safety and environmentally related specifica tions for refrigerating systems and heat pumps Data badge An identification plate is attached to the baseplate on the inside of the geoTHERM heat pump The type desig nation is located at the top on the grey frame of the pillar see also Fig 4 3 Item 1 In Chapter 7 2 of the Appendix there is a picture of an identification plate for the benefit of technically interested customers and a table explaining the symbols shown on it Operating Manual geoTHERM VWS 0020045200_00 1 Notes on this manual The following information is intended to help you throughout the entire documentation Further docu ments apply in combination with this operating manual We accept no liability for any damage caused by failure to observe these instructions Other applicable documents for the expert technician Installation instructions No 838408 as well as all the accessories instructions listed therein The following information is intended to help you throughout the entire documentation Further docu ments apply in combination with this operating manual We accept no liability for any damage caused by fail ure to observe these instructions Other applicable documents For the owner of the system Warranty card No 802922 For the heating engineer geoTHERM installation instructions No
42. saving tips Operating Manual geoTHERM VWS 0020045200_00 5 4 Flow diagram Reset to default settings We 16 02 08 Graphics display Factory setting Cancel NO YES Time programme NO YES Everything NO YES gt Select a Foe geil Installer Menu We 16 02 08 9 35 Q B gt Sparen aktiviert for gt 12 00 gt Select stop time We 16 02 08 O B Party function enabled E Mo 21 04 08 16 49 al Flow Temp CH 28 C We 16 02 08 System pressure 1 2bar Brine pressure 1 4bar Z N One time CH Comp only e DHW tank loading enabled ess L a DDE L O HK2 B 2 Parameters merno mode x Domestic hot water u Time programme Set value day 20 C Night set back temp 15 C gt Mo gt Select operation mode g Basic data 87 Date 21 04 08 Day of week gt Mo Time 09 35 gt Set day of the week Domestic hot water Parameters Circulation pump Operation mode DHW Time programme ra SN 2 I gt Mo P Min DHW temp Current DHW temp gt Select operation mode Code layer Code Nummer gt 0000 Hard co HK2 Time programme Holiday programming gt Mo for cpl System SY 90 00 24 00 Periods WY e gt Adjust numeric character 1 gt 06 01 08 08 01 08 2 14 01 08 31 01 08 Room Temp setpoint 12 C gt Set starting day Code level only for expert technicians Fig 5 2 Displays in the User level Oper
43. splay shown DHW loading Parameters E 4 Auto 60 C Operating mode WW Max DHW temp Min DHW temp 44 C Cylinder temp REAL 51 C Auto 60 C 44 C 51 C gt Select set target temperature Description For connected domestic hot water cylinders and the circulation circuit the operating modes Auto On and Off are possible 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 heated Note The maximum WW temperature is only dis played when the auxiliary hot water heating is ena bled Without electric auxiliary heating the WW tempera ture 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 We recommend that hot water generation be achieved without the electric auxiliary heating by this method the maximum WW temperature is de termined by the high pressure cut out in the heat pump cooling circuit This cut out corresponds to a maximum hot water temperature of 58 C In order to keep the heat pump starts to an absolute mini mum as low a min hot water temperature as possi ble should be selected Factory setting Min hot water temp 44 C HK2 Time programme E5 gt Mon 1 00 00 2 3 24 0
44. t and designed accor ding to accepted safety rules and regulations Neverthe less there is still a risk of injury or death 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 intended This unit is not intended for use by persons including children having limited physical sensory or mental capacities or who have inadequate experience and or knowledge unless they are supervised by a person responsible 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 heat generators for closed hot water central heating installations and for hot wa ter preparation Any other use or extended use is con sidered to be improper The manufacturer or supplier is not liable for any resulting damage The user alone bears the risk It is also considered as intended use to observe the operating and installation instructions all other applicable documents adherence to the inspection and care conditions Danger Risk to life as a consequence of improper use of the installation There is a risk of death or serious injury to the user or third parties or of damage to the device and other property in the event of improper use or use for which it is not intended 3 2 Requirements of the installation site The installation sit
45. ter is to be run Please set this timer programme to your minimum require ments As an example for working people a window from 6 00 8 00hrs and a second window from 17 00 23 00hrs can minimise the energy consumption due to hot water generation Circulation pump E 5 You can set the times at which the circulation pump on Time programme is to be operational in the Circulation Pump Timer Programme menu Sat gt Mon a Up to three times can be programmed per day or 1 06 00 22 00 block 7 30 23 30 i i If the hot water operating mode see menu E 3 is Sy 3 gt gt Select weekday block set to ON the circulation pump runs continuously 7 30 22 00 The timer programme circulation pump should cor respond to the timer programme hot water if nec essary the time slots could be selected even more restrictively If the desired hot water temperature is obtained quickly enough without switching on the circulation pump the circulation pump can likewise be deacti vated In addition you can briefly activate the circulation pump by means of electronic pushbutton switches mounted in the immediate vicinity of the taps and connected to the heat pump the same idea as stair well lighting The operating times of the circulation pump can thus be optimally matched to the actual need Consult your expert technician about doing this Table 5 1 Settable parameters in the operator level ctnd 20
46. vaporator must have a lower tem perature than the geothermal 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 These different temperatures are produced in the coolant circuit by means of a compressor 2 and an expansion valve 4 which are situated between the evaporator 1 and the condenser The coolant flows in vapour form from the evaporator 1 into the compres sor where it is compressed This causes the pressure and temperature of the coolant vapour to rise sharply After this process it flows through the condenser where it releases its heat to the heating water by condensa tion It flows as a liquid to the expansion valve where it expands significantly and in so doing loses much of its pressure and temperature This temperature is now lower than that of the outside air which flows through the evaporator 1 The coolant can thus take up more heat in the evaporator 1 turning into vapour in the process and flowing to the compressor The cycle starts again If required the electric auxiliary heating can be switched in by the integrated controller To prevent the formation of condensate in the interior of the unit the pipes of the heat source circuit and the coolant circuit are insulated Should condensate appear however it is collected in a pan inside the unit and di verted away underneath it Drop fo
47. vel can also vary depending on the temperature of the heat source However it should never sink so far that it is no longer visible in the expansion tank Caution Risk of damage The filling of the brine circuit in your heat pump installation may only be undertaken by authorised specialists Check the filling level of the brine circuit at regular intervals and inform your expert technician company if the filling level in the brine expansion tank is too low 3 4 3 Accumulation of condensate condensa tion water The evaporator the brine pumps and the pipes in the heat source circuit as well as some components in the coolant circuit are insulated in the interior of the heat pump so that no condensate can accumulate If conden sate should ever accumulate in small amounts this will be collected by the condensate basin The condensate basin is located on the inside in the lower part of the heat pump As a result of the heat generated inside the heat pump the condensate in the condensate pan eva porates Small amounts of the accumulating condensate can be drained off under the heat pump In small amounts accumulating condensate should not be seen as a fault in the heat pump Operating Manual geoTHERM VWS 0020045200_00 3 5 Energy saving tips Below you will find important tips to help you operate your heat pump system in an energy and cost saving manner 3 5 1 General energy saving tips You can even save energy by your
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