USER MANUAL
Contents
1. USER MANUAL GROUND SOURCE HEAT PUMP a MODEL BWA SS 6 BWA SS 8 230v 50H2 BWA SS 8 BWA SS 10 3 BWA SS 12 BWA SS 16 3x400V 3 50Hz b CE Please read this operating manual before using the Heap Pump TYDP List of contents 1 Important Information cccccceeeeeeeeeeeeeeeeeeeeeeeeeaeeaeneenenesenens 3 1 1 Safety INStructlon seco dsc een oculus ac ent wu Ra sie Ra MU E d CAVE ncaa ceases rues 3 1 1 1 Installation and Maintenance seeeeereereeeh hehe hh hh nn 3 1 1 2 Modification of System Components seen hehehe hh hhhhnm hannah nn 3 1 1 3 Safety Valve iia ian ices deuce ru ei kk ara au a cra cia RR araa aa Eai ERR nee dee ee ES LEER 3 1 2 Protective MeaSures ccccccneccenenseneceneenenen ene e ee eee eee ee ae eee enna RAN ARR NAA 3 1 2 1 Preventing Corrosion c ccceee cece e ence eee eee eee eee eee uuu uuu 3 2 Unit DescriptioM sod M 3 2 1 Heat Pump PFBOIDIG oer roc er sas ecc DE SEE wu yew des EQ sae ean enews nna 4 2 2 Auxiliary Heater Electric Heating Element sese 5 2 3 Water Heaters aves exe sae ea urea a sve EL Ee Rr Uu ERR E UEAN M E RERE E ER E eaves 5 24 Control Panel russe read osx Kara Vs e ak dotati een Un c o cie E v Ri Ro Gr 6 EMEN i PRIEST T 3 Operating Instructions euesi eu tenera ener rur exo ener par de rein Enduro ste 7 3 1 General Informati n siiis eau asas ses RR ER IRUEEREESERIIIRQXTID2. ADD3 Total operating hours of auxiliary heater 6kW since installation Operating time will will not be reset to zero Total operating hours of auxiliary heater 9kW since installation Operating time will will not be reset to zero can not can not 3 1 2 7 Sub Menu RESET Reset to factory setting value Press the right button for 5 seconds 3 1 2 8 Sub Menu MAN TEST MANTEST ADD 1 OFF ADD 2 OFF ADD 3 OFF HEATPUMP OFF 3 WAY OFF BRINE PUMP OFF WARM PUMP OFF How to enter the Sub Menu MAN TEST You need to choose the MAN TEST on the main menu INFORMATION And press the right button for 3 seconds The Sub Menu MAN TEST contains ADD1 ADD2 ADD3 HEAT PUMP 3 WAY BRINE PUMP WARM PUMP You can choose ON OFF to control the each part for testing Notice when installer to test the components function in submenu MAN TEST it recommend that start the water pump before start the compressor and electrical heater 15 3 1 2 10 Sub Menu SETTING How to enter the Sub Menu SETTING You need to choose the SETTING on the main menu INFORMATION Press the right button Then SETTING menu can be seen SETTING ADD HEAT TIMER JS ADD DELAY DATE TIME MON ON 21 00 08 00 OFF ADD START TIME 11 30 WARMWT TIMER 4 STERILAZE TIMER 1 ON i ON 18 00 22 00 OFF TIMER 1 OFF CMPDIF TEMP 5c TIMER 2 ON EMERGENCY 1 OFF TIMER 2 OFF EMERGENCY 2 ON 25 HDO OFF v DATE TIME TIME To d
3. Phone Electric installation Date Company Name Phone System Adjustment Date Company Name Phone If these instructions are not followed during installation operation and maintenance the obligations of our company under the warranty regulations are no longer binding Our company reserves the right to alter any details and specifications without prior notice 28
4. HIGH T STOP or LOW T STOP When the function is activated the circulation pump will be turned off The factory setting of the HIGH T STOP is 50 C 0 50 C adjustable The factory setting of the LOW T STOP is 50 C 50 0 C adjustable If you wish to change the HIGH T STOP OR LOW T STOP value 1 Open the main menu INFORMATION by pressing the right or left hand button once You will find the cursor at the sub menu OPERATION Press the down button to move the cursor to the sub menu HEAT CURVE Open the selected menu by pressing the right hand button once You will find the cursor at the parameter CURVE Press the down button to move the cursor to HIGH T STOP or LOW T STOP o oc A o N Open the selected parameter by pressing the right hand button once The cursor moves to HIGH T STOP or LOW T STOP 7 Raise or lower the value using respectively the up or down button 8 Press the left hand button three times to return to the main menu 3 2 7 Graph of recent changes in TEMPERATURE All temperatures registered during the last hour can be viewed in the sub menu TEMPERATURE in the shape of a graph This will enable you to monitor changes in the different system temperatures FEEDLINE 48 C There is a graph available for all temperatures except for the OUT ROOM temperature where you can only view the measured value The integral value that is displayed represents the heating system s energy balance If you wish
5. and 5 C The feed line temperature can be changed by plus minus 3 degrees CURVE 34 C 0 When outdoor ambient temperature is 5 C this setting is available to change the feed water temperature it is adjustable by operator heat curve is not change the slope is no change but the point near 5 C from O C to 10 C curve can be change step by step the variable is the biggest at 5 C itis 3 C When outdoor ambient temperature is 0 C his setting is available to change he feed water temperature it is adjustable by operator heat curve is not change the slope is not change but the point near 0 C from 5 C to 5 C curve can be change step by step the variable is the biggest at O C itis 43 C CURVE 45 C 0 a When outdoor ambient temperature is 5 C this setting is available to change he feed water temperature it is adjustable by operator heat curve is not change the slope is not change but the point near 5 C from 0 C to 10 C curve can be change step by step the variable is the biggest at 0 C it is 3 C 21 If you wish to change a specific part of the heat curve 1 Open the main menu INFORMATION by pressing the right hand button once You will find the cursor at the sub menu OPERATION 2 Press the down button to move the cursor to the sub menu HEAT CURVE 3 Open the selected menu by pressing the right hand button once You will find the cursor at the parameter CURVE 4 Using the up
6. valve of the heating circuit and the overflow pipe Never close the connection between safety valve and overflow pipe When heated water tends to expand which causes some water to be let out through the overflow pipe This water may be hot The overflow pipe should therefore discharge into a floor drain placed so that nobody can get hurt 1 2 Protective Measures 1 2 4 Preventing Corrosion To eliminate any risks of corrosion the use of all kinds of aeorosol should be avoided in the proximity of the heat pump In particular avoid the following Solvents Detergents containing chlorine Paint Glue 2 Unit Description In order to get the best results from the climate system BWA SS series you should read through the section For the System manager in these Installation and Maintenance instructions BWA SS series is a climate system for heating houses and apartment buildings as well as industrial properties Ground rock or lakes can be used as the heat exchange source BWA SS series is a complete heating installation for heating and hot water It is fitted with new design on the market to be developed specifically for heat pumps A new evaporator enables a new and improved circulation system for the refrigerant The heat pump has an integrated 150 or 200 litre water tank and 3 an immersion heater The Tap Water Stratification system improves the efficiency of heat transfer by keeping the water in distinct thermal layers in the w
7. AS raaa atinira eiia T 3 1 1 Menu Navigation M n d 3 1 1 1 Display of current operating mode RR 7 3 1 1 2 Symbols eer ee rur X EN EXER DER wate NEN quid Sasu i e Rus kom Dou eu Rede eae 8 31 2 Mens coi a osos a o ul e brc usd a ORAT er ErdRE dida M ended 9 3 1 2 1 Main Menu INFORMATION cn rrr hh hh eee nha nnn nnn rrr 9 3 1 2 2 Sub Menu OPERATION oscixsr edet sah Ru ien set reda aa MSRFXKIXU M ADU d an 10 31 23 Sub Menu HEAT CURVE 5 35 roue dete soto oup ia aa eden annis neice aaeain 11 3 1 2 4 Sub Menu TEMPERATURE esne nenne hne nme n sh annua sh aeneae nenas 12 31 2 5 Sub Menu INTEGRAL ceed ace svc sese FER FEX Fur VATEEE svi e kRR US VR iute AN RIUEE 12 3 1 2 6 Sub Menu OPERATING TIME er nnnm hh hh hmm hmm hh rrr rrt 15 2 12 7 Sub Menu RESET Giseszezeukotuctedcau as necuceucrecua stex a a Eas dE MEE diga 15 31 2 B Sub Menu MAN TEST sic tock ioco cox oexiasu nna a decor aa a cx Me daan ada E dddeE 15 312 9 Sub Menu SETTING 7utzess dio va sae exv IUE dece iana vases Ee suoi adii kaa idaan 16 3 1 2 10 Sub Menu LANGUAGE 2122 22 29 2 cene pa pen you yao rE pera oe aao UeEER Ne RUE EI eR EU YERRRR 18 3 2 Adjustments to be made regularly ceeee eee nre ener 18 3 2 1 Heat Generation General sseeeee ense nennen anas ean aua en mu aan uuu uua 18 3 2 2 Adjustment of the CURVE value esese
8. D 1 The heat pump is running 2 The auxiliary heater is activated 3 There is a room heating demand 4 Warm water is being produced 5 Indicates the status of warm water production If the symbol is empty warm water temperature is under the setting temperature It does not mean that there is no water in the water tank The tank is always full 6 If the symbol is full warm water temperature reached to the setting temperature 3 1 2 Menus 3 1 2 1 Main Menu INFORMATION To open the main menu INFORMATION press the right or left hand button once Return lt INFORMATION SETTING Open gt OPERATION LANGUAGE next HEATCURVE mena TEMPERATURE INTEGRAL OPER TIME RESET MAN TEST To select the desired sub menu use the up or down button Open the menu by pressing the right hand button once To return to the main menu press the left hand button once OPERATION Running mode Room heating 1 Room heating 2 Water tank heating HEATCRVE The setting of this submenu will affect the room temperature CURVE is program that adjusts feed water temperature according outdoor ambient temperature factory setting is ambient temperature 0 C as feed water temperature 40 C that is CURVE 40 the value of CURVE is adjustable from 22 C to 56 C How to change the slope two points decide one beeline point one is 0 40 the other point could be 18 24 the point 18 24 is not changing when changing the slope because f
9. Oe Del 1 Important Information If the installation will be shut down during the winter months the heating system should be emptied of water to avoid any damage due to freezing Call your Installation Contractor for help see References on page 30 The installation is practically maintenance free but some monitoring will be required see Operating Instructions on page 7 Before making any adjustments of system parameters first find out what the consequences are in each case For all service work please call your installation contractor 1 1 Safety Instructions 1 1 1 Installation and Maintenance Installation and commissioning as well as repairs and maintenance must be carried out by a qualified installation contractor see References on page 30 Any changes in the electrical installation must be undertaken by a qualified electrician see References on page 30 Service work on the refrigerant circuit must be carried out by a qualified refrige ration technician see References on page 30 Danger to Life 1 1 2 Modification of System Components The below components can only be modified by a qualified installation contractor Heat Pump Unit Refrigerant warm water and power lines Safety Valve No structural changes may be made to the installation that might affect the operational reliability of the heat pump 1 1 3 Safety Valve The following safety instruction s must be observed in regard of the safety
10. Outside air temperature 3 2 2 Adjustment of the CURVE value The heat curve will be adjusted by the CURVE value This value indicates the feed line temperature to the radiators at 0 C outside temperature At outside air temperatures lower than 0 C the water sent to the radiators will be warmer than 40 C At outside temperatures higher than 0 C the water will be colder than 40 C When you increase the CURVE value the heat curve will become steeper and when you reduce it it will become flatter This is the most energy and cost efficient way to set the indoor temperature and should therefore be used for long term temperature settings If you wish to make a temporary change of temperature you can simply change the ROOM value see Adjustment of the ROOM value on page21 18 CURVE is program that adjusts feed water temperature according outdoor ambient temperature factory setting is ambient temperature 0 C as feed water temperature 40 C that is CURVE 40 the value of CURVE is adjustable from 22 C to 56 C How to change the slope two points decide one beeline point one is 0 40 the other point could be 18 24 the point 18 24 is not changing when changing the slope because factory setting is that heat pump stops when outdoor ambient temperature is 18 C so the feed water temperature should be 24 C CURVE 40 C 18 Change of value for CURVE If you wish to change the CURVE value 1 Open the main menu INFORMATION by pr
11. actory setting is that heat pump stops when outdoor ambient temperature is 18 C so the feed water temperature should be 24 C TEMPERATURE Temperature items setting INTEGRAL Integral is a program to set the startup time and distance between compressor and electrical heater to set stop conditions of compressor and electrical heater This program is depends on the feed water temperature degeneratiaon and Time OPER TIME To calculate how much time have been running by compressor electrical heater RESET Return to factory settings press button Right to go back all factory settings MAN TEST Engineer testing SETTING To set Daytime Time electrical heater timing water tank heating timing whole unit timing Emergency mode 1 Emergency mode 2 auxiliary electrical heater 3 1 2 2 Sub Menu OPERATION lt OPERATION ROOMHEAT 1 A ROOMHEAT 2 WARMWATER HEATPUMP Vv ADD HEAT ROOMHEAT1 After select mode ROOMHEAT 1 the heat curve is that feed water temperature determined by outdoor ambient temperature At the time ROOMHEAT 2 be of no effect ROOMHEAT 2 After select ROOMHEAT 2 feed water temperature is adjustable from 10 to 65 C factory setting is 45 C At the time the system is controlled by time and flow temperature ROOMHEAT 1 is of no effect not affected by ambient temperature WARMWATER ROOMHEAT1 ROOMHEAT2 Auto mode select V water tank heating and room heating at the same time enter Auto mode A
12. are adjusted iav the graphic display on the control panel The heating circuit receives heat energy from the refrigerant circuit and carries it to the water heater or radiator floor coil systems See further Heat Pump Principle on p 4 The heat curve is the control computer s instrument for determining the required supply line temperature of the heating system Indoor temperature will be adjusted by adjustment of the CURVE value Circuit filled with Brine sytem see above transporting heat energy from heat source to heat pump See Heat Pump Principle on p 4 27 6 Default Settings The first column of table 7 shows the parameters that are adjustable by the User The second column shows settings made at the factory and the third column the settings made by the installation contractor in connection with installation of the heat pump Make sure that the installation contractor enters any settings made during installation that are particular for your heat pump This will make it easier for you when you make your own adjustments Table 7 Default Settings Parameter Factory setting Individual settings by installation contractor ROOM 20 C OPERATION AUTO CURVE 40 C MIN 22 C MAX 70 C CURVE 5 0 C CURVE 0 0 C CURVE 5 0 C HIGH T STOP 50 C LOW T STOP 50 C 7 References Installation and commissioning by Piping installation Date Company Name
13. ater tank The unit is fitted with a regulating computer which is controlled over a graphic display unit Heat is distributed throughout the house over a hydronic heating system referred to as low temperature system with a maximal water temperature to radiators Feed line temperature of 65 C Most of the heating demand is taken care of by the heat pump compressor unit the auxiliary heater being started only when demands exceed available heat pump capacity BWA SS series consists of five main components a Heat Pump Unit Rotory or Scroll compressor Stainless steel heat exchangers Circulation pumps for heating systems Valves and safety equipment for refrigerant system complete with necessary electric components b Water Heater 150 or 200 litre Lined with copper sheet against corrosion or made of stainless steel Maintenance free as no anode is used c Reversing Valve Opening or closing the connection to water heater according to operating mode heating or warm water production d Auxiliary Heater 3 6 9 kW electric heating element Three step capacity control Fitted on supply line Delivers back up heat in case of great heat demand that exceeds heat pump capacity Starts automatically provided operating mode AUTO has been selected e Regulating Equipment The regulating system controls heat pump components compressor circulation pumps auxiliary heater and reversing valve Based on data received from sensors it starts or
14. ble 1 Menu HEAT CURVE STOP 50 C Menu Text Description Adjustable by CURVE The value entered shows the temperature of the water to be distributed to the radiators feed water temperature when the outside air temperature is 0 C used see Adjustment of CURVE value on p18 MIN Adjustment of value for lowest feed water temperature allowed used see Adjustment of MIN amp MAX value on p22 MAX Adjustment of value for highest feed water temperature allowed used see Adjustment Of MIN amp MAX value on p22 CURVE 5 Adjustment of room temperature when the outside air temperature is 5 C used see Adjustment of CURVE value on p18 CURVE 0 Adjustment of room temperature when the outside air temperature is 0 C used see Adjustment of CURVE value on p18 CURVE 5 Adjustment of room temperature when the outside air temperature is 5 C used see Adjustment of CURVE value on P18 HIGH T STOP When outdoor ambient temperature is higher than this setting the hot water to room will be stopped this setting is adjustable from 0 to 50 C factory setting is 50 C LOW T STOP When outdoor ambient temperature is lower than this setting the hot water to room will be stopped this setting is adjustable from 0 to 50 C factory setting is 50 C 3 1 2 4 Sub Menu TEMPERATURE This menu shows the different tempe
15. choose the room on the Sub menu TEMPERATURE then press the right button Use UP and DOWN button to adjust the ROOM CURVE Factory setting of ROOM value is 20 C CURVE 40 C 18 Chan 9h Ithe ROOM value 19 If you wish to change the ROOM value 1 Press the up or down button once to open the ROOM value for adjustment 2 Increase or reduce the preset value using the up or down button so that the desired room temperature is reached Wait for 10 seconds or press the left hand button once to return to the main menu When enter Room heat mode user could control compressor and electrical heater through regulate heat curve or DM degree minute under a certain ambient temperature the time start of compressor is determined by degree minute DM Now we are giving two situations to explain 1 start quickly is determined by FEED heat curve Suppose now the feed water temperature is 25 C regulate the heat curve to let the setting of water temperature to be a higher value such as 55 C that is FEED25 55 At that time DM degree minute decrease 30 per minute when the DM reach 60 compressor will start right away Notice if the water temperature setting is lower than feed water temperature DM would turn to positive number and then compressor does not start Of course you also can regulate the DM to be near the value for compressor start such as 20 turn it up 2 start slowly is determined by FEED heat c
16. e only electrical heater water pump or other temperature protection are available When in water tank heating the electrical heater will instead of compressor when in room heating mode the electrical heater will runs depends on Integral when in room heating mode 1 the electrical heater will runs depends on Integral when in room heating mode 2 the electrical heater automatically starts unless operator off the electrical heater HDO ON OFF 1 Switch it on the input signal on the wire HDO would block the compressor fan and additional heater 2Switch it off the input signal would block nothing External signal controls heat pump start and stop there two signal connections when external relay switch on them the compressor electrical hearer and motor will stop running After switch off them the compressor electrical heater motor will restart and work as previous setting ADD DELAY 30 to 90 Min adjustable factory setting is 30M ADD START 45 to 70 degree adjustable factory setting is 50 degree when heating the water tank after only runs compressor 10 minutes if two conditions are fulfilled the electrical heater 1 will start automatically 1 the current water temperature more than 50 C this setting is adjustable from 45 C to 70 C 2 the water temperature can not increase 1 C in a certain time from 3 to 90 minutes adjustable default is 30 minutes after start electrical heater 1 if the water temperature can no
17. e following Selection of operating mode Adjustment of desired room temperature by changing the ROOM value Adjustment of heat curve Adjustment of maximum and minimum values for feed line temperature Adjustment of the value for HIGH T STOP or LOW T STOP is possible Please refer to Adjustment of HIGH T STOP or LOW T STOP value on p 25 3 2 1 Heat Generation General The indoor temperature should be adjusted by changing the heat curve of the installation The control computer determines the correct temperature of the water to be distributed to the heating system based on the heat curve The heat curve will be adjusted in connection with installation It must be adapted later on however to obtain a pleasant indoor temperature under any weather condition A correct heat curve reduces maintenance and saves energy The heat curve determines the feed line temperature depending on the outside air temperature The lower the outside air temperature the higher the feed line temperature In other words the temperature of the water feed to the radiators will increase exponentially as the outside air temperature falls If you select CURVE in the sub menu named HEAT CURVE a diagram will be displayed It represents the relation of outside air temperature to feed line temperature This relation is referred to as heat curve Heat curve Feed line 40 C 18 temperature Relation of outside air temperature to Feed line temperature
18. eeseeen nene nennen nnne nennen 18 3 2 3 Adjustment of ROOM value ditus 19 3 2 4 Adjustment of Part of the Heat Curve M 21 3 2 5 Adjustment of the MIN and MAX value Luueesseeeese nennen nnne nennen nnn 22 3 2 6 Adjustment of the HEAT STOP value seseseseeen enne nnne nnne anna 23 3 2 7 Graph of recent changes in TEMPERATURE see eese enne nennen nnns 23 3 3 Maximum Return Line Temperature esee eee nnne nn nnn 24 3 4 Warm Water Prod ctlon 22 c eoccroite itecto eee a e ear SEU RP DU Ce Eva Pe oos oebods 24 3 5 Regular Checks irre rada wr xe ee t Var av ib ev aa eva als it aro asus Red code dec 24 3 5 1 Check of Operating Mode 3 5 2 Checking the Brine Level of the Brine System TDIUHMETIPOUILIIBIUID DEM 24 3 5 3 Checking the Water Level of the Heating System cierre 25 3 5 4 Checking the Safety Valve eeeeeeeeee eene nnne nmn nnn anne nnne 25 3 5 5 imthe Event of Leakage sissosete veces urat kyxi iwicp PXUECES Urs vODFUR GS EURCUR RS PEN MeV CES 25 4 Trouble shoOllhg oiii ardens re Ente EERR e eei CHF dS n ag ea Eea 26 4 1 Alarm EEEE 25i cu eve xcix er etate eus tu ERE IE RE petEU OE KUe Yu nx NEUE NE 26 5 Terminology and Abbreviations ccccceeeeeeeeeeenseeeeeeneeeees 27 6 Default Setlirids iiesiceise eie erreur areae cavae aere reps er rn m O 7 Referene6S iocos m kes c od rU Ea TRE rd olio
19. essing the right hand button once You will find the cursor at the sub menu named OPERATION 2 Press the down button to move the cursor to the sub menu called HEAT CURVE 3 Press the right hand button once to open the menu You will find the cursor at the parameter CURVE 4 Open the selected parameter by pressing the right hand button once 5 Increase or reduce the preset value using the up or down button You will see from the diagram how the gradient of CURVE changes Press the left hand button three times to return to the main menu 3 2 3 Adjustment of ROOM value As mentioned above you can also adjust heat curve and indoor temperature by changing the ROOM value If you use ROOM value to adjust the heat curve the gradient does not change i e it doesn t become steeper or flatter Instead the whole curve is moved by 1 C for every degree by which the ROOM value is changed The relation feed line temperature to outside air temperature will not be affected The feed line temperature will be increased or reduced by the same number of degrees all along the heat curve See the following diagram Adjustment of the ROOM value should only be used for temporary changes of the indoor temperature For long term settings the CURVE value should be adjusted as this is the most energy and cost efficient way to set the indoor temperature For adjusting the heat curve please refer to the chapter Adjustment of the CURVE value on page 20 You need to
20. fter enter this mode water tank heating has the priority compressor restart when in water tank heating must follow program CMPDI TEMP When water tank get to setting temperature three way valve will change its direction to room heating automatically If the water tank temperature decrease three way valve s direction will go back to water tank heating HEATPUMP ONorOFF ON select ON compressor is running normally OFF select OFF only switch off compressor the others are running normally ADD HEAT ONorOFF ON select ON electrical heater is running normally OFF select OFF only switch off electrical heater the others are running normally If you wish to change operating mode a Open the main menu INFORMATION by pressing the right hand button once You will find the cursor at the sub menu named OPERATION b Open the OPERATION menu by pressing the right hand button once You will find the cursor at the previously selected operating mode c Select the desired mode by pressing either the up or down button Return to the main menu by pressing the left hand button twice 3 1 2 3 Sub Menu HEAT CURVE This menu is used for making adjustments that affect the room temperature For more information please refer to Adjustments to be made regularly on page 20 lt HEATCURVE CURVE MIN MAX CURVE 5 CURVE 0 CURVE 5 V HIGH T ALOW T 40 C 22 C 70 C 0 C 0 C 0 C STOP 50 C Ta
21. han 10 C A During heat pump running whatever mode heat pump runs heat pump will give an alarm with sound at the time heat pump will automatically turn to water tank heating and then go back to previous running mode until water tank s temperature get to 20 C B During heat pump is not running heat pump will give an alarm with sound WARM WATER TOO LOW POWER SUPPLY Phase error For three phase the phase order reversed or wrongly connected For single phase the three phase option Port in the circuit board is not connected or loose Please check if the phase connections were correct 26 Table 6 The following table only applies to installations using ground water as brine system liquid Error code Explanation Cause How to do BRINE OUT TEMP Brine out temperature Sensor disconnected Sensor was Check the connections the wire of sensor or change the sensor sensor error defective Under 25 C the resistance of sensor should be 5K BRINE IN TEMP Brine in temperature sensor Sensor disconnected Sensor was Check the connections the wire of sensor or change the sensor error All operation stopped defective Under 25 C the resistance of sensor should be 5K 5 Terminology and Abbreviations Evaporate INTEGRAL Compressor Condenser CURVE Refrigerant Radiator Control Heating circuit Heat curve Brine system In the evaporator ene
22. isplay or adjust day of week To display time or adjust time Double timer function TIMER1 ON V9 00 TIMER1 OFF V 12 00 TIMER2ON V14 00 TIMER2 OFF 418 00 TIME ON When choose mark 4 the Auto start function is active choose x for cancel this function If this function is active every day during the timing the heat pump will work normally TIME OFF When choose mark Y the Auto stop function is active choose x for cancel this function If this function is active every day during the timing the heat pump will stop normally ADD HEAT TIMER Vv ON 21 00 9 00 OFF When choose mark V the Auto start function of electrical heater is active choose x for cancel this function If this function is active every day electrical heater will start and stop automatically according to the setting WARMWATER TIMER V ON 21 00 9 00 OFF When choose mark J the Auto start function of water tank heating is active choose x for cancel this function If this function is active every day water tank heating will start and stop automatically according to the time setting When heat pump is ON water tank timer function makes sure the water tank heating has priority If the heat pump is ON with mode WARMWATER only Then if set water tank timer to be 6 00 ON 12 00 OFF the water tank heating will be available only during clock 6 00 12 00 If the heat pump is ON with mode Auto WARMWATER ROOMHEAT Then if set water
23. minutes later when the Feed water temperature higher than desired temperature for 1 C 10X1 10 Degree Minute 150 Another 1 minutes later when the Feed water temperature higher than desired temperature for 2 C 10X1 10 Degree Minute 140 Another 1 minutes later when the Feed water temperature higher than desired temperature for 3 C 10X1 10 Degree Minute 130 Another 1 minutes later when the Feed water temperature higher than desired temperature for 4 C 10X1 10 Degree Minute 120 Compressor off when Degree Minute reach 0 adjustable The relationship between compressor on and off and DM the relationship between heater on and off and DM The above chart is describing that running of compressor and electrical heater depend on Integral Compressor s Degree Minute are 60 on and O off A0 60 on Heater 1 s Degree Minute are 500 on and 60 off AO A2 60 440 500 on Heater 2 s Degree Minute are 500 on and 500 off Heater 3 s Degree Minute are 600 on and 550 off 3 1 2 6 Sub Menu OPERATING TIME lt OPERATION TIME HEATPUMP ADD 1 ADD 2 ADD 3 Menu Text Description Adjustable by HEATPUMP Total operating hours of heat pump since installation Operating time will not be reset to zero can not ADD1 Total operating hours of auxiliary heater 3kW since installation Operating time will will not be reset to zero can not ADD2
24. ng damaged 24 Brine system liquid brine must be added if the brine level gets so low that it is no longer visible in the expansion vessel Level is too low Level is correct During the first month of operation the brine level might sink a little which is quite normal The brine level may also vary a bit depending on the temperature of the heat source Under no circumstances however shall the brine level be allowed to sink so much that it is no longer visible in the expansion vessel Call your installation contractor for refilling of Brine system liquid See References on page 28 3 5 3 Checking the Water Level of the Heating System The pressure of the heating system should be checked once monthly The pressure shown on the external pressure gauge should be 1 1 5 bar If the value is below 0 8 bar with cold water in the heating system more water must be added applies to a closed expansion vessel To find out where the pressure gauge is located You can use ordinary tap water for filling the heating system In some rare cases the water quality would be unsuitable for this purpose corrosive or calcareous water In case of doubt we would recommend that you call your installation contractor IA A iN f N A T N Don t use any water treatment additives for the heating system 3 5 4 Checking the Safety Valves Both safety valves of the heating system should be checked at least four times a year to prevent lime de
25. once You will find the cursor at the sub menu OPERATION 2 Press the down button to move the cursor to the sub menu called TEMPERATURE 3 Open the menu by pressing the right hand button once 4 Press the down button to move the cursor to the parameter WARMWATER 5 Open the selected parameter by pressing the right hand button for 3 seconds A graph will be shown of last hour s warm water temperatures 6 Press the left hand button three times to return to the main menu The value displayed next to the parameter WARMWATER is the actual hot water temperature The value in brackets is the temperature at which warm water production will start When the actual temperature falls below that value warm water production starts The starting value is not adjustable 3 5 Regular Checks 3 5 1 Check of Operating Mode In the event of an alarm The background light of LCD will flash and an alarm message will be displayed ALARM AND HEAT OVER OR FLOW TROUBLE Check the alarm indicator regularly to make sure that the heat pump works properly You would not always notice if there is something wrong as the auxiliary heater would start automatically provided of course operating mode AUTO was selected For more information please refer to the chapter TROUBLE SHOOTING on p 26 3 5 2 Checking the Brine Level in the Brine system IA Y N The Brine system must be filled with the correct volume of brine Otherwise the heat pump A N unit risks bei
26. or down button select either CURVE 5 CURVE 0 or CURVE 5 5 Open the selected curve by pressing the right hand button once 6 Raise or lower the value using respectively the up or down button To return to the main menu press the left hand button three times 3 2 5 Adjustment of the MIN and MAX value The MIN and MAX value is the lowest respectively highest value that is allowed for the supply line temperature Adjusting the minimum and maximum supply line temperature is particularly important if your home has floor heating If your house has floor heating and parquet floor the supply line temperature should not be higher than 45 C Else the floor might get damaged If you have floor coils and stone tiles the MIN value should be 22 25 C in summer when no heating is required to obtain a comfortable floor temperature MIN MIN is the minimum setting of feed water temperature it is adjustable by operator from10 to 30 C factory setting is 22 C if the room s floor use ceramic tile then the setting of MIN can not less than 22 C this value can get a comfortable floor temperature the heat pump will restart as soon as actual feed water temperature less than MIN setting MAX MAX is the maximum setting of feed water temperature it is adjustable by operator from 30 to 70 C and factory setting is 70 C if heat pump is using for floor heating this setting is very important because at the time the feed water temperature can not highe
27. posits to clog the mechanism To find out where the safety valves are located The safety valve of the water heater protects the closed heater against positive pressure It is fitted on the cold water inlet line its outlet opening facing down wards If the safety valve is not checked regularly the water heater might be damaged It is quite normal that the safety valve lets out small amounts of water when the water heater is being charged especially if a lot of warm water was used previously To check the safety valves give the cap a quarter of a turn clockwise until the valve lets out some water through the overflow pipe If a safety valve does not work properly it must be replaced Check with your installation contractor See References on page 28 The opening pressure of the safety valve is not adjustable 3 5 5 In the Event of Leakage In the event of leakage in the warm water lines between unit and water taps the shut off valve on the cold water inlet line should be closed immediately Call your installation contractor see References on page 28 In the event of leakage in the sytem circuit turn off the heat pump and call your installation contractor immediately See References on page 28 25 4 Trouble shooting 4 1 Alarm Messages In the event of an alarm message try to re start the unit with the safety switch If this does not work try to solve the problem with the help of the table below Call your installation cont
28. r than 70 C otherwise could be dangerous the heat pump will stop as soon as actual feed water temperature more than MAX setting If there is a basement to your house the MIN value should be adjusted to a suitable temperature in summer too to avoid a humid and chilly basement In such cases the value for HEAT STOP needs being adjusted upwards If you wish to change the MIN or MAX value 1 Open the main menu INFORMATION by pressing the right or left hand button once You will find the cursor at the sub menu OPERATION 2 Press the down button to move the cursor to the sub menu HEAT CURVE 3 Open the selected menu by pressing the right hand button once You will find the cursor at the parameter CURVE 4 Press the down button to move the cursor to MIN 5 Open the selected parameter by pressing the right hand button once The cursor is at MIN 6 Raise or lower the value using the up and down button respectively 7 Press the left hand button three times to return to the main menu Repeat the procedure to change the MAX value replacing MIN by MAX at step 4 22 3 2 6 Adjustment of the HIGH T STOP and LOW T STOP HIGH T STOP and LOW T STOP functions are only for room heating the water tank heating still works normally when the two functions are active The HIGH T STOP and LOW T STOP function stops water production to room floor when the outside air temperature is equal to higher or lower than the value entered for
29. rBRINEINorBRINEOUT press button Right 5 seconds willdisplay the information as follow kind of chart to check how the temperature is going in one hour 3 1 2 5 Sub Menu INTEGRAL lt INTEGRAL 00 OFF 00 CMP A 60 00 ADD 1 500 60 ADD2 550 500 ADD 3 600 550 Integral DM is a program to set the startup time and distance between compressor and electrical heater according to heat demand and heat output to set stop conditions of compressor and electrical heater This program is depends on the feed water temperature degeneratiaon and Time To enter this menu operator can change the factory setting Menu Text Description Adjustable by OFF When the value testing reaches the value setting by USER user the system will be closed When the value testing reaches the value setting by USER CMP A user the compressor will be start up And the value i testing under the value setting the compressor will be closed ADD1 When the value testing reaches the value setting by USER user the ADD 1 will be start up And the value testing under the value setting the ADD1 will be closed ADD2 When the value testing reaches the value setting by USER user the ADD2will be start up And the value testing under the value setting the ADD2 will be closed ADD3 When the value testing reaches the value setting by USER user the ADD 3 will be start up And the value testing under the value setting
30. ractor if you need help See References on page 28 Table 3 Alarm Messages Error code Explanation Cause How to do RETURN TEMP Return water temperature Sensor error Sensor disconnected Sensor was defective Check the connections the wire of sensor or change the sensor Under 25 C the resistance of sensor should be 5K FEEDLINE TEMP Supply water temperature Sensor error Sensor disconnected Sensor was defective Check the connections the wire of sensor or change the sensor Under 25 C the resistance of sensor should be 5K compressor system COMP A PRESS double compressor system pressure protection OUTDOOR TEMP Outside air temperature Sensor disconnected Sensor was Check the connections the wire of sensor or change the sensor sensor error defective Under 25 C the resistance of sensor should be 5K ROOM TEMP Room air temperature Sensor disconnected Sensor was Check the connections the wire of sensor or change the sensor Sensor error defective Under 25 C the resistance of sensor should be 5K CMP TEMP Compressor exhaust Sensor disconnected Sensor was Check the connections the wire of sensor or change the sensor temperature sensor error defective Under 25 C the resistance of sensor should be 50K WARM WATER TEMP Water tank temperature Sensor disconnected Sensor was Check the connections the wire of sensor or change the sensor sensor e
31. ratures of the heating system All temperature changes registered over the last 60 minutes are stored in the control system and can be viewed in the shape of graphs lt TEMPERATURE OUT 25 ROOM 28 FEED 30 65 RETURN 45 WARMWT 30 50 BR OUT 18 BR IN 15 OUT Display outdoor ambient temperature ROOM Display room air temperature FEED 1 the first value is real feed water temperature the second value in is feed water setting temperature in ROOMHEAT 1 mode it is adjusted by slope of Curve according to outdoor ambient temperature Factory setting is that feed water temperature is 40 C when outdoor ambient temperature is 0 C that is to say Curve is 40 the value of Curve is adjust from 22 C to 56 C This setting is only available for Room heating not for water tank heating 2 under ROOMHEAT 2 mode FEED setting can be adjust directly from 20 to 65 C factory setting is 45 C this setting is only available for room heating not for water tank heating RETURN Display return water temperature WARMWT water tank temperature the first value is water tank real temperature the second value in Y is water tank setting temperature the setting temperature is adjustable from 20 C to 62 C factory setting is 45 C BRINEIN Display the temperature of Brine system when entering the heat pump BRINEOUT Display the temperature of Brine system when leaving the heat pump When at item WARMWT or RETURN or FEED o
32. rgy from the heat source is absorbed by the refrigerant passing through the evaporator The refrigerant turns into gas See Heat Pump Principle on p 4 INTEGRAL is the heat balance of the heating system Production of heat is regulated acc to a calculated heat demand value This value is determined by comparing the actual supply line temperature with its calculated setpoint value The difference between the two values is multiplied by the time during which the difference is active The resul ting value is referred to as the integral The integral value is automatically established when heat is being produced The value can be viewed in the sub menu TEMPERATURE The compressor raises temperature and pressure of the the refrigerant See Heat Pump Principle on p 4 Inthe condenser the refrigerant releases its heat energy to the heating circuit See Heat Pump Principle on p 4 The CURVE value will be adjusted on the control panel The value indicates the temperature of the water distributed to the radiators supply line temperautre at an outside air temperature of 0 C Circuit in the heat pump filled with refrigerant that by evaporation compression and circuit condensation absorbs heat energy from the sytem circuit and releases it to the Heating circuit Heating element The control computer regulates the whole installation All system settings and computer temperature changes are stored and registered in the computer Settings
33. rigerant is led through the expansion valve where its pressure is reduced and then continues to the evaporator The process is restarted The heat pump has three separate liquid circuits Heating circuit Compressor Expantion valve pressure increase Refrigerant circuit pressure drop Refrigerant Evaporator T Eva Brine system circuit Brine system The heat pump has three separate liquid circuits Brine sytem circuit a water based mixture brine transporting energy from heat source to heat pump Refrigerant circuit circulating inside the heat pump Through evaporation compression and condensation it absorbs energy from the Brine sytem and releases it to the heat carrier The refrigerant is chlorine free Heating circuit water transporting heat energy to the heating system radiators floor coils and the water heater 2 2 Auxiliary Heater Electric Heating Element The auxiliary heater an electric heating element fitted on the supply line has three capacity steps Step 1 3 kW Step2 6 kW Step 3 9 kW 2 3 Water Heater BWA SS series comes with a built in water heater holding 150 or 200 litres The temperature of the water sent to the water heater is controlled by the regulating pressure switch and cannot be adjusted Warm water production is stopped when the regulating pressure switch reaches its operating pressure which corresponds to about 50 55 C warm water temperature At regular intervals
34. rror defective Under 25 C the resistance of sensor should be 5K HIGH PRESS single Compressor high The wire disconnected lack of refrigerant water flow stop in the room cycle Check the wire connection check refrigerant quantity Check the water cycled pump for the room heating system Check if the water system contains air LOW PRESS single compressor system COMP B PRESS double compressor system Compressor low pressure protection The wire disconnected lack of refrigerant Check the wire connection check refrigerant quantity CMP OVER Compressor overload The actual current over the contactor s allowed current Compressor current too large Check the wire connection Check if the water system contains air and cause the water temperature over high and current over large ADD HEAT OVER OR FLOW TROUBLE Supplementary electrical heater over heat or water flow got problem The temperature of electrical heater over the max allowed temperature Water flow too small or stopped Check the wire connection Check if the water system contains air or without water CMP AIR OVER Compressor exhaust air temperature over heat Water flow too small Lack of refrigerant Check if the water system contains air or without water Check the refrigerant quantity WARMWATER TEMP TOO LOW Temperature of the water tank is too low Water tank temperature less t
35. rrow One button pointing to the ON OFF When display at the interface press button Right for 5 seconds for locking the display will show a symbol of lock All buttons are not available after lock is active until press button Right for 5 seconds to open the lock if the lock is active and then power supply cut off the lock will be open after power supply resume 3 Operating Instructions 3 1 General Information 3 1 1 Menu Navigation The right hand button on the control panel is used to open the desired menu The left hand button is used to return to the previous menu The up and down buttons are used to navigate between the parameters of a menu A cursor arrow on the left hand side of the display indicates which menu can be opened The up and down buttons are also used if you wish to increase or reduce a preset value 3 1 1 1 Display of current operating mode ROOM 20 c amp During normal operation the following information will be displayed Desired preset room temperature OPER WARMWATER Date time timer Whether there is a heating demand or not If there is there will MONDAY 11 30 e e a heat pump or auxiliary heater or both see Symbols Which operating mode has been selected Symbols For you to know at a glance the actual operating mode of the heat pump each of the following symbols will be shown in the lower part of the display depending on which part of the unit is working 89 O JF S
36. stops heat pump operation and determines whether heating or warm water shall be produced The system consists of Control computer with graphic display unit Temperature sensors outside air room feed line return line and Brine sytem 2 1 Heat Pump Principle A heat pump can exploit the energy contained in natural heat sources Or to put it differently the heat pump collects heat energy from the heat source This makes the heat pump a very environmentally friendly and economically sound alternative for space heating a AA hose filled with liquid Brine system is immersed into a lake dug into the ground or sunk into the rock The Brine sytem absorbs the heat energy of the heat source so that the temperature of the water circulating in the hose is raised a few degrees b The Brine systemis circulated to the heat pump s evaporator Here the heat energy of the Brine system causes the refrigerant circulating through the evaporator to boil and turn into a gas it evaporates c The refrigerant having absorbed heat energy is circulated to the compressor where pressure and temperature are raised d The refrigerant continues to the condenser When condensing it releases heat energy to the heat carrier circulating through the condenser The temperature of the refrigerant sinks and it returns to its liquid state e The heat energy released is carried by the heating circuit to water heater and radiator or floor heating systems f At last the ref
37. t increase 1 C in a certain time then electrical heater 2 will start automatically after start electrical heater 2 if the water temperature can not increase 1 C in a certain time the electrical heater 3 will start automatically then electrical heater work until water get the setting temperature STERILIZE STERTLIZE WATER TEMP 60 C DURATION 120 M PERIOD 15 D Sterilize water temperature 60 C 90 C adjustable default is 60 C Sterilize duration 10 90minutes default is10 minutes Sterilize period 7 99days default is 15 days If the water tank s temperature always less than 60 C default and last 360 hours period the heat pump will start the sterilize function the electrical heater start as soon as water get to 50 C until water temperature get to 60 C default and last 10 minutes default or if 3 hours later the water temperature still can not reach 60 C the sterilize function will exit 3 1 2 11 Sub Menu LANGUAGE Language selection How to enter the Sub Menu of LANGUAGE You need to choose the LANGUAGE on the Main menu INFORMATION Press the right button Then LANGUAGE menu can be seen lt LANGUANG ENGLISH v DEUTSCH Use Up and Down botton to select the language and press Right button to confirm 3 2 Adjustments to be made regularly Most settings will be made by the installation contractor in connection with installation Adjustments to be made regularly by the user are th
38. tank timer to be 6 00 ON 12 00 OFF the water tank heating will be available only during clock 6 00 12 00 the rest time will turn to room heating CMPDIF TEMP compressor restart determined by water temperature degeneratiaon of water tank This setting is only for water tank heating it is adjustable from 3 to 15 C and factory setting is 5 C EMERGENCY1 ONorOFF Emergency mode 1 emergency 1 ON or OFF factory setting is OFF after select emergency mode the unit will continuously execute the same objective room heating only water tank heating only or auto When select ON compressor will be switch off only electrical heater water pump or other temperature protection are available When in water tank heating the electrical heater will instead of compressor when in room heating mode the electrical heater will runs depends on Integral when in room heating mode 1 the electrical heater will runs depends on Integral when in room heating mode 2 the electrical heater automatically starts unless operator off the electrical heater 16 EMERGENCY2 ONorOFF Emergency mode 2 emergency 2 ON or OFF factory setting is OFF after select emergency mode the unit will continuously execute the same objective room heating only water tank heating only or auto When select this mode compressor will stop determined by outdoor ambient temperature the temperature setting is from 0 to 50 degree adjustable factory setting is 25 degre
39. the ADD3 will be closed Instruction of Integral DM Degree Minute The corresponding value of temperature difference between the Feed water and the Desired water X Running time through integral to change every minute for a cumulative Temperature difference between the feed water The conespondina value and the desired water C 31 40 40 21 30 30 11 20 20 1 10 10 1 10 10 11 20 20 21 30 30 3141 40 40 For example Under desired temperature Feed water temperature decrease 1 C under desired temperature in 1 minutes Degree Minute 10 X 1 10 Feed water temperature continue decrease 2 C under desired temperature in another 1 minutes Degree Minute 10 X 1 10 20 Feed water temperature continue decrease 3 C under desired temperature in another 1 minutes Degree Minute 10 X 1 20 30 Feed water temperature continue decrease 4 C under desired temperature in another 1 minutes Degree Minute 10 X 1 30 40 Before the Degree Minute reach 60 adjustable the compressor is off but when the Degree Minute reach 60 adjustable the compressor automatic start and the flow temperature will begin increase Higher than desired temperature when the actual water supply temperature reach higher than the desired temperature the DM will be changed For example the DM was cumulated to 160 in this time 1
40. the water in the water heater will be heated to as much as 65 C as a preventive measure against bacteria The preset interval is 14 days For more information please refer to Warm Water Production on page 24 BWA SS Safety valves Return line Supply line ce Pressure gauge Expansion HW CW vessel To drain HW hot water Charging valve CW cold water ER Exp expansion 2 4 Control Panel The control panel of BWA SS series features a graphic display five control buttons Beside the control panel you will find the User s Manual a short description of how to increase and reduce room temperature and a label with name and phone number of dealer ROOM 20c 18 OPER WARMWATER MONDAY 11 30 D Q2 z 9 Graphic display ROOM 20 amp OPER WARMWATER MONDAY 11 30 2 2 0 Control Buttons influence key 2 4 1 Functions The control computer is operated with the help of a user friendly menu system that is displayed on the control panel There is a main menu and several sub menus accessible from the main menu The menus are described in detail further down To be able to select the desired menu and increase or reduce preset values you will use the five buttons One button pointing upwards marked with a up arrow One button pointing downwards marked with a down arrow One button pointing to the right marked with a right arrow e One button pointing to the left marked with a left a
41. to check the TEMPERATURE graphs 1 Open the main menu INFORMATION by pressing the right or left hand button once You will find the cursor at the sub menu OPERATION Press the down button to move the cursor to the sub menu TEMPERATURE Open the menu by pressing the right hand button once You will find the cursor at the parameter OUT Press the down or up button to move the cursor to the desired temperature Open the selected value by pressing the right hand button once A graph will be shown in the display NO oc FR W Mw Move the cursor along the time axis using the up plus or the down minus button The exact temperature at the selected point of time appears at the top of the display 8 Press the left hand button three times to return to the main menu 23 3 3 Maximum Return Line Temperature The maximum return line temperature i e temperature of the water returning from the heating system should be adapted to each individual installation The correct temperature value for your system will be entered by your installation contractor in connection with installation and can be adjusted later 3 4 Warm Water Production The temperature of the water distributed to the water heater is controlled by the regulating pressure switch and cannot be adjusted Reading of warm water temperature To check the actual warm water temperature on the display 1 Open the main menu INFORMATION by pressing the right or left hand button
42. urve Suppose now the feed water temperature is 25 Cif regulate the heat curve to let the setting of water temperature to be a lower value such as 30 C that is FEED25 30 at that time the DM would decrease 10 per minute the time to reach 60 is becoming longer only after some time then compressor can start You also can regulate the DM to be more far away from the value for compressor start such as 100 CURVE curve is a little flat When enter room heat mode it needs customer to regulate the heat curve or DM degree minute according to own request 20 3 2 4 Adjustment of Part of the Heat Curve At outdoor temperatures between 5 C and 5 C part of the heat curve may need adjusting if the indoor temperature does not stay at the preset ROOM value For this reason the control system includes a function adjusting the curve at three outside temperatures 5 C 0 C 5 C This function will allow you to increase or reduce the feed line temperature without affecting the heat curve at three specific outdoor temperatures If for example the outside temperature is 5 C the feed line temperature will change gradually in the outdoor temperature range of 0 C to 10 C maximum adjustment being reached at 5 C The diagram below shows an adjusted CURVE 5 The point of maximum adjustment is clearly visible As we have seen you can choose to adjust the heat curve at three specified out side air temperatures 5 C 0 C
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