BWA-SS-10 - Nordic Europe
Contents
1. Factory setting of ROOM value is 20 C CURVE 40 C J m Changing the ROOM value 13 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 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 supply line temperature without affecting the heat curve at three specific outdoor temperatures If for example the outside temperature is 5 C the supply 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 and 5 C The supply line temperature can be changed by plus minus 5 degrees CURVE 40 C Change of the value for CURVE 5 If you wi2. on p 14 MAX Adjustment of value for highest supply line temperature User see Adjustment of MIN allowed and MAX values on p 14 CURVE 5 Adjustment of room temperature when the outside User see Adjustment of air temperature is 5 C CURVE value on p 13 CURVE 0 Adjustment of room temperature when the outside User see Adjustment of air temperature is 0 C CURVE value on p 13 CURVE 5 Adjustment of room temperature when the outside User see Adjustment of air temperature is 5 C CURVE value on p 13 Production of radiator heat is stopped when outside air HEAT STOP temperature is equal to or higher than the value for User if require heat stop entered Room temperature can be reduced if an external timer is User if require REDUCTION installed The control system determines how much the temperature should be reduced 10 3 1 2 4 Sub Menu TEMPERATURE This menu shows the different temperatures 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 TEMPERATURE gt OUT ROOM FEEDLINE RETURNLINE WARMWATER INTEGRAL BRINE OUT Table 2 Menu TEMPERATURE Menu Text Description OUT Outside air temperature ROOM Desired setpoint room temperature Actual measured supply line tempe rapture FEEDLINE of heating system in brackets the setpoint desired value Measured return line temperature of RETURNLINE
3. YL Indicates the heating system selected To be entered by the installation contractor in connection with installation Cannot be changed 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 Cursor TEMPERATURE OPER TIME LANGUAGE MANUAL RESET 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 3 1 2 2 Sub Menu OPERATION HEATPUMP ADD HEAT WARMWATER This menu is used for the selection of operating mode The control system allows for five different operating modes e OPERATION OFF Heat pump is turned off The following text is displayed on the control panel OPERATION OFF If the heat pump will be put in OPERATION OFF mode during winter please remember to let out all the water of the heating system to avoid any damage caused by freezing e OPERATION AUTO Heat pump and auxiliary heater are regulated automatically by the control system The text OPERATION AUTO will be displayed on the control panel s OPERATION HEAT PUMP Only heat pump compressor operation is allowed by the control system The text OPERATION HEAT PUMP will be displayed on the control panel e OPERATION ADD Only the auxiliary heater will be allowed to operate This operating mode is normally used when a new installation is being pu
4. left hand button once You will find the cursor at the sub menu named OPERATION Press the down button to move the cursor to the sub menu called HEAT CURVE Press the right hand button once to open the menu You will find the cursor at the parameter CURVE Open the selected parameter by pressing the right hand button once Increase or reduce the preset value using the up or down button You will see from the diagram oF O N 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 3 C for every degree by which the ROOM value is changed The relation supply line temperature to outside air temperature will not be affected The supply 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 13
5. 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 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 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 called TEMPERATURE Open the menu by pressing the right hand button once Press the down button to move the cursor to the parameter WARMWATER Open the selected parameter by pressing the right hand button once A graph will be shown of last hours warm water temperatures 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
6. 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 LOW PRESS ERROR 16 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 18 3 5 2 Checking the Brine Level in the Brine sytem 7 mm i E Wi VAN Ai y F y The Brine sytem must be filled with the correct volume of brine Otherwise the heat pump unit risks being damaged Brine sytem 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 sytem liquid See References on page 2
7. 0 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 17 JA ry A A T re T 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 deposits 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 so
8. BWA SS 10 Z a 2 List of contents 1 Important INTOFMAU ON wes cece cst eccrcnarnesvevemecerstbaweviaseevsceuereocescen sen 3 1 1 Safety INSIFiCtlONS vnssiiecewsceweeer se wewewecnnwsiandeucceuse E E 3 1 1 1 Installation and Maintenance cceseeceeeeeeceeeeeceeaeeceenaeseeeeaessaueuesseuuueseeees 3 1 1 2 Modification of System Components cccccecueccccccccccunnuuucceceeuueueueueeuuuuuuuns 3 Tells Sale Vale eater osca wetecaaaaens sone aaa hae ance a a aa 3 1 2 Protective M aSllleSaicecdnmesmccawtscccweemcuncseendeiiasceacexees nina scanseexecaseeneesedee 3 1 241 Preventing Cormosioncecues sp teseieridueey tracer a a aS 3 2 Unit DESCIIDUON sissanta E E O 3 2 1 Heat Pump PHINGIP Oessccacctacscceccesowscvesecccnncctecensaceteceeesscsteeas ereecteer 4 2 2 Auxiliary Heater Electric Heating Element cccceeeueeeeeeeeenuaenneeseseeens 5 23 W ter Heale sei sivesesecccceierencusaveatineseassnocerecs ules O E 5 ZA COntiOl Pane leecwciccescsvasvovensewscdcestesvesantcmsansmiaaddeiueenideeictuaneetwncue 6 2 4 1 Functions ssseeee saiSiala Sic cib e cid draw Sie tele Nuke daa eid murine O T 3 Operating INSUUCHONS sieui ronida a aaa 7 3 1 General INIOKMANON scasadvivesenisecrnissevectendeinesensansedesecedtensenseeneeseriaens T 3 1 1 Menu Navigation EAE EE E EEE e E E N 3 1 1 1 Display of current operating TMOG cececcccccecccecesseecusccccecececceesesneneesces T Se VDO lS aaa nue acoseae sss scnset eee e
9. Unit Description In order to get the best results from the climate system BWA SS 10 you should read through the section For the System manager in these Installation and Maintenance instructions BWA SS 10 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 10 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 water 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 Supply 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 10 consists of five main components a Heat Pump Unit Rotory or Scroll compressor Stainless steel heat exchangers Circulation pumps for Brine sytem brine and hea
10. aeseeaee 8 312 Men s ance vececatceevnudewcseaewieaicesiteewniadwcdenteasmnnocae nad estesnoneraeewateneaneut 9 3 1 2 1 Main Menu INFORMATION ccccccceccecnencceeecceeeeeeneeneennaaaannaenaeeueeenseeegsesas 9 3 1 2 2 Sub Menu OPERATION sscincecteinvencceetwudecdawnerdececevuwan aus ceavecceexeeimawnnssencen 9 3 1 23 Sub Menu HEAT CURVE soecostecaceesstteceeeuidissuennedvacesinusGenaceors akai 10 3 1 2 4 Sub Menu TEMPERA TURE ss sssss22202222501222502s0us2us02s0usnunnunnunnunnnnnnnnnnnnnn 11 38 1 25 S b Menu OPERATING TIME 2accesvetcatitncsdsaneevetcehienesd diedie aii 11 34 26 S b Menu LANGUAGE vec stiwnstencuceuesnesieseeuddianaceniesrceselabe aaa 12 3127 S b Men RESET miniera ai 12 3 2 Adjustments to be made regularly ccccceeceeeencnnnnnnneneeeecececeenssnssnsses 12 3 2 1 Heat Generation General icccscwtcai eveendcccuevesercedaraledeesemucenasnetensouteudeeaxe 12 3 2 2 Adjustment of the CURVE value scccscccccccccccuneucuunccuceeuecaueceuuuueuanseuuenssenss 13 3 2 3 Adjustment of ROOM value escccsseccccccccccccccncncceususescusssocosuauenessesssausnecsss 13 3 2 4 Adjustment of Part of the Heat Curve ccccescccccccnnueueeeeenuueueeeeuauaeneeeuesueauns 14 3 2 5 Adjustment of the MIN and MAX valle ssceccceuuecuccceuneeeueueuuaueueuueugnenueusaens 14 3 2 6 Adjustment of the HEAT STOP value sccccccenuueecceeunnueeeeeunnueeeeeensneuueugneneses 15 3 2 7 Graph of recent changes in TEMPERATURE ssecccceueecceeueueueeeeuueucecusue
11. de 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 supply line temperature This relation is referred to as heat curve Supply line lt CURVE TENH temperature Heat curve Relation of outside alr temperature to supply line tempe rature Outside air temperature 12 3 2 2 Adjustment of the CURVE value The heat curve will be adjusted by the CURVE value This value indicates the supply line temperature to the radiators at 0 C outside temperature At outside air tempe ratures 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 page 13 Factory setting of CURVE value is 40 C at an outside air temperature of 0 C The value is adjustable between 22 C and 56 C lt CURVE 40 C i Change of value for CURVE If you wish to change the CURVE value as Open the main menu INFORMATION by pressing the right or the
12. elect language of different country 3 1 2 7 Sub Menu RESET Reset to factory setting value 3 2 Adjustments to be made regularly Adjustable by Not adjustable Not adjustable Not adjustable Not adjustable Most settings will be made by the installation contractor in connection with installation Adjustments to be made regularly by the user are the following e Selection of operating mode e Adjustment of desired room temperature by changing the ROOM value e Adjustment of heat curve e Adjustment of maximum and minimum values for supply line temperature Adjustment of the value for HEAT STOP is possible Please refer to Adjustment of HEAT STOP value on p 15 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 supply line temperature depending on the outside air temperature The lower the outside air temperature the higher the supply line temperature In other words the temperature of the water fed to the radiators will increase exponentially as the outsi
13. en 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 In the 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 A water based mixture transporting heat energy from the heat source to the heat pump See Heat Pump Principle on p 4 Circuit filled with Brine sytem see above transporting heat energy from heat source to heat pump See Heat Pump Principle on p 7 Circuit in the heat pump filled with refrigerant that by evapo ration compression and circuit condensation absorbs heat energy from the Brine sytem circuit and releases it to the Heating circuit Liquid absorbing energy from the Brine sytem circuit and releasing it to the heating circuit 19 See Heat Pump Principle on p 4 Radiator Heating element Control The control computer regulates the whole installation All system settings and computer temperature changes are stored and registered in the computer Settings are adjusted via the graphic display on the control panel Heating circuit The heating circuit receives heat energy from the refrigerant circuit and carries
14. eneseess 16 3 3 Maximum Return Line Temperature ccccceeeenaenccceceeeenneneseseesesnesssees 1 O 3 4 Warm Water Production cccccccccccccccccnneucuuuneeeneauueceeeeeeeunseneeeensusens 16 3 5 Regular CHECKS croissir A A A E 16 3 5 1 Check of Operating Mode wields ds a aa O 3 5 2 Checking the Brine Level in the Brine sytem P A E E T E T 17 3 5 3 Checking the Water Level of the Heating System ccceuesscccuueuccuuuueecuuneceeueeees 17 3 5 4 Checking the Safety Vale cvacecscciccsecccia ctinanena ceaswencsecsmescwceecudesiceateaseccset 18 S55 inthe Event of eakage viuvicwervewscs vneanevewesteeeesvaaduierwedescseueewerenuedvedeacedes 18 4 Trouble OO ng a e N 18 4 1 Alarm Messages ja sue E S E A EE 5 Terminology and Abbreviations N TREA gt 6 Default TT 7 PROTON CIC CS ciate tas cesses wits aaa a n a 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 20 The installation is practically maintenance free but some monitoring will be required see Operating Instructions on page 9 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 commissio
15. gged strainer in heating system Motor protection cut out Compressor is OPEN edie or OF ner oO MOTOR Paes Power failure caused by fuse or thermostats Fill and bleed the stopped No warm water is produced P ERROR safety switch heating system or call the installation contractor ADD ERROR Overheat protection cut out Electrical fault The safety switch has Check fuses and reset safety switch if cut out cut out Error outside air sensor The value 0 C will OUT SENSOR be used for calculation of supply line setpoint Electrical fault Call your installation contractor value Error supply line sensor All operation FEEDLINE stopped except circulation pump of heating Electrical fault Call your installation contractor SENSOR system RETURN SENSOR Electrical fault Call your installation contractor 18 WARM WATER ROOM SENSOR ERR PHASE SEQ HIGH RETURN Error warm water sensor No warm water Electrical fault Call your installation contractor produc tion Actual measured room temperature is not displayed The value 20 C will be used for calculation of supply line setpoint temperature Electrical fault Call your installation contractor Heat pump compressor rotates in the wrong j Phase order reversed when changes direc tion Heat is produced by auxiliary ie Call your installation contractor heater only were made to electric installation Temperature of water returned from radiators too high Heat pump
16. heating system in brackets the maximum return temperature allowed Measured warm water temperature WARMWATER in brackets the starting temperature for warm water production Regulation of heat production is based INTEGRAL on an estimated demand value which is calculated automatically during operation Integral is the energy balance of the heating system BRINE IN Temperature of Brine sytem when entering the heat pump BRINE OUT Temperature of Brine sytem when leaving the heat pump 3 1 2 5 Sub Menu OPERATING TIME OPERATION TIME HEATPUMP ADD ADD 2 WARMWATER Adjustable by User see Adjustment of ROOM value on page 13 Not adjustable The temperature necessary to keep the desired room temperature is determined by the control system Installation contractor To be adapted to each individual unit Not adjustable Not adjustable Not adjustable Not adjustable 11 Table 3 Menu OPERATING TIME Menu Text Description HEATPUMP Total operating hours of heat pump since installation Operating time will not be reset to zero ADD Total operating hours of auxiliary heater 3kW since installation Operating time will not be reset to zero ADD 2 Total operating hours of auxiliary heater 6kW since installation Operating time will not be reset to zero WARMWATER Total operating hours of water heater since installation Operating time will not be reset to zero 3 1 2 6 Sub Menu LANGUAGE S
17. it to the water heater or radiator floor coil systems See further Heat Pump Principle on p 4 Heat curve 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 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 4 5 0 C 10 C 5 C CURVE 5 0 C WARMWATER 44 C 7 References Installation and commissioning by Piping installation aes o omes S o Name 20 Electric installation bae ee Company Name ww ooo System Adjustment poate Company 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 with
18. mbols ROOM 20 C telling which heat source is working heat pump or auxiliary heater NO DEMAND or both see Symbols on page 8 ne aai m e Which operating mode has been selected In addition to this the following messages may be displayed e PHASE SEQUENCE The compressor in the heat pump is running in the wrong direction which means that heat is produced by the auxiliary heater only see Alarm on page 18 e HIGH RETURN The temperature of the water returning from the radiators is too high so the heat pump will not be allowed to produce heat see Alarm on p 18 e START The heat pump is in the processs of starting There is a 30 second delay bet ween start of Brine sytem pump and compressor e START_MIN The heat pump will start in the number of minutes indicated in the display 3 1 1 2 Symbols For you to know at a glance the actual operating mode of the heat pump one of the following symbols will be shown in the lower part of the display depending on which part of the unit is working The heat pump is running The auxiliary heater is activated The figure next to the symbol indicates capacity step There is a heating demand Warm water is being produced Indicates the status of warm water production If the symbol is empty warm water temperature is 44 C lf the symbol is full warm water temperature is the start temp 4 C The function for temperature reduction is activated
19. me water through the overflow pipe lf a safety valve does not work properly it must be replaced Check with your installation contractor see References on page 20 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 20 In the event of leakage in the Brine sytem circuit turn off the heat pump and call your installation contractor immediately See References on page 20 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 contractor if you need help See References on page 20 Table 3 Alarm Messages LOW PRESS Low pressure switch cut out Compressor is owe ae ene een Pal youe mStation contractar i Air in Brine sys tem Clogged ERROR stop ped No warm water is produced ied dee strainer in Brine system Open radiator or floor coil thermostats Fill and bleed the heating system or call the installation contractor Not correctly opened radia tor floor HIGH PRESS Low pressure switch cut out Compressor is coil thermostats Air in heating ERROR stop ped No warm water is produced system Clo
20. ncrease and reduce room temperature and a label with name and phone number of dealer ROOM 20 C Graphic display ROOM 20 C HO DEMAND HEAT OPERATION 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 four 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 e One button pointing upwards marked with a plus One button pointing downwards marked with a minus One button pointing to the right One button pointing to the left One button pointing to the ON OFF 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 During normal operation the following information will be displayed e Desired preset room temperature o e Whether there is a heating demand or not If there is there will also be sy
21. ning as well as repairs and maintenance must be carried out by a qualified installation contractor see References on page 20 Any changes in the electrical installation must be undertaken by a qualified electrician see References on page 20 Service work on the refrigerant circuit must be carried out by a qualified refrige ration technician see References on page 20 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 Brine sytem 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 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 1 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
22. once 4 You will find the cursor at the parameter CURVE 5 Press the down button to move the cursor to HEAT STOP 6 Open the selected parameter by pressing the right hand button once The cursor moves to HEAT 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 lt CURVE 40 C There is a graph available for all temperatures except for the ROOM temperature where you can only view the setpoint value The integral value that is displayed represents the heating system s energy balance If you wish 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 15 2 Press the down button to move the cursor to the sub menu TEMPERATURE 3 Open the menu by pressing the right hand button once 4 You will find the cursor at the parameter OUT 5 Press the down or up button to move the cursor to the desired temperature 6 Open the selected value by pressing the right hand button once A graph will be shown in the display 7 Move the cursor along the time axis using the up plus
23. operation is Not correctly opened radiator floor Make sure that all thermostats are not allowed coil thermostats completely open Table 4 The following table only applies to installations using ground water as brine system liquid Message BRINE OUT Temperature of brine leaving heat pump is lower than setpoint value Compressor is stopped and no warm water is produced The minimum Brine sytem The system resets automatically when temperature has been reached temp has risen to setpoint value Flow switch not active at latest compressor start Compressor is stopped and no warm water is produced Brine sytem flow is too low Call installation contractor BRINEFLOW LOW 5 Terminology and Abbreviations Evaporate INTEGRAL Compressor Condenser CURVE Brine system Brine system Refrigerant Refrigerant In the evaporator energy 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 wh
24. out prior notice 21
25. r 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 sytem is circulated to the heat pump s evaporator Here the heat energy of the Brine sytem 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 refrigerant 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 Ay Compressor pressure increase Expantion valve Refrigerant circuit pressure drop Refrigerant Evaporator Brine sytem circuit Brine sytem 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 comp
26. ression 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 Step 2 6 kW Step 3 9 kW 2 3 Water Heater BWA SS 10 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 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 16 BWA SS BWB SS Safety valves Return line supply line a Pressure gauge EXA UN Expansion i 4 vessel To drain HW hot water CW cold water Exp expansion Charging valve 2 4 Control Panel The control panel of BWA SS features a graphic display six control buttons Beside the control panel you will find the User s Manual a short description of how to i
27. sh to change a specific part of the heat curve 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 Using the up or down button select either CURVE 5 CURVE O or CURVE 5 Open the selected curve by pressing the right hand button once 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 lf 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
28. t into service before the Brine system is ready for use The text OPERATION ADD will be displayed on the control panel OPERATION WARMWATER The heat pump will only produce warm water no heat will be distributed to the heating system The text OPERATION WARMWATER will be displayed on the control panel If you wish to change operating mode a Open the main menu INFORMATION by pressing either the right or the left 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 d 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 12 lt HEATCURVE gt CURVE MIN MAX CURVE 5 CURVE 0 CURVE 5 HEAT STOP Table 1 Menu HEAT CURVE Menu Text Description Adjustable by The value entered shows the temperature of the water to be used see Adjustment CURVE distributed to the radiators supply line temperature when the of CURVE value on p 13 outside air temperature is 0 C MIN Adjustment of value for lowest supply line temperature User see Adjustment of MIN allowed and MAX values
29. 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 14 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 3 2 6 Adjustment of the HEAT STOP value The HEAT STOP function stops all production av radiator heat when the outside air temperature is equal to or higher than the value entered for heat stop When the heat stop function is activated the circulation pump will be turned off except when warm water is being produced Even if shut off the pump will be exercised during 1 minute a day Factory setting for heat stop is 17 C If you wish to change the HEAT 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 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
30. ting 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 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 supply 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 A hose filled with liquid Brine sytem is immersed into a lake dug into the ground o
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