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Installation and service instructions DHP-AL

1. Outdoor sensor Other sensors 1 First measure the sensor including the cable C khm C kahi 2 Then measure the sensor only 30 1884 0 66 3 25 1443 5 52 4 20 1115 10 41 8 15 868 15 335 10 681 20 27 1 5 538 25 22 0 0 428 30 18 0 5 343 35 14 8 10 276 40 12 2 15 224 45 10 1 20 183 50 8 5 25 150 55 7 1 30 124 60 6 0 35 103 65 5 0 40 86 70 4 2 75 3 7 80 31 85 2 7 90 2 3 95 2 0 VMBME102 41 14 3 Operational problems Alarm Problem Alarm LP low pressure pressure switch 1 Blocked strainer on the brine Check that the strainer is not blocked Clean the strainer if necessary circuit 2 Air in the brine circuit Listen for air in the heat pump and brine circuit Bleed the brine circuit according to the installation instructions 3 Closed taps main tap or filler Check that the shut off cock any other taps are Open closed taps cock on the brine circuit open 4 The circulation pump for the Check The circulation pump may have jammed if so brine circuit is defective or has jammed 5 Cable break or loose cable to low pressure pressure switch 6 Low pressure pressure switch opens too soon 7 Incorrect type of anti freeze must be in accordance with instructions 8 Incorrect mix of anti freeze the concentration must be in accord ance with instructions 9 Short active collector e g short or dry bore hole short surface soil collector 10 Coll
2. Expansion card OUTDOOR STOP Lowest outdoor temperature when the outdoor sensor stops the compressor 20 C and heating or hot water instead produce with auxiliary heater interval 20 C 1 C SHUNT COOLING Set point value for cooling Desired temperature for supply pipe 18 C interval 0 C 30 C Sub menu SERVICE gt ADD HEAT Used to change the heat pump stage s operating settings Menu selection Meaning Factory setting INTEGRAL A2 Two conditions must be fulfilled in order to start the auxiliary heater the inte 600 interval 50 990 gral s value to start must be less than integral A1 A2 and the supply tempera ture must be 2 lower than the calculated temperature See figure 6 for further information HYSTERESIS If the difference between the actual supply temperature and the calculated 20 C interval 5 C 30 C supply temperature is too great see figure 7 either the integral value is set to start value A1 A2 the auxiliary heater starts or the value is set to O stops the auxiliary heater MAXSTEP Maximum number of permitted steps for auxiliary heating 2 at OUTSIDE AIR 5 2 T _ interval OFF 1 3 a auxiliary heating permitted Means that only AUTO or OFF can be select interval at OUTDSIDE i AIR OFF 1 5 MAX CURRENT Refers to main fuse in the unit in amperes 20 interval 16 35 Expansion card SHUNTTIME Minimum time interval between signals to shun
3. If the delivery pipe sensor is defective replace it If the delivery pipe temperature gets so hot that the compressor stops start by leak tracing the unit Rectify the leak if a leak is found If no leak is found try draining and refilling the unit and then restarting the heat pump and seeing what the delivery pipe temperature is If the problem per sists replace the compressor If the overheating reading does not correspond with the instructions for the specific refrigerant adjust the expansion valve until the correct value is obtained See separate instructions for cooling techniques If overheating cannot be adjusted with the expan sion valve or if the capillary tube bulb is dam aged replace it 57 11 Lack of refrigerant not enough refrigerant in the sys tem 12 Overfilled refrigerant cir cuit 13 Short active collector e g short or dry bore hole short surface soil collector 14 Changed conditions Have you increased your heating and or hot water demand Using manometer apparatus and thermometer check that the unit s overheating is correct for the specific refrigerant Then check in the same way that the unit s cool ing is correct See separate instructions for cooling techniques Using manometer apparatus and thermometer check that the unit s overheating is correct for the specific refrigerant Then check in the same way that the unit s cool ing is correct See separate in
4. i ite OO 40 U Local higher supply tem perature at 5 24 2 O O 5 Zz O Outdoor temperature Figure 49 The adjusted curve at 5 C You can choose to adjust the heat curve individually at three specified outdoor temperatures 5 C 0 C and 5 C The supply temperature can be changed by plus minus 5 degrees HEATSTOP The HEATSTOP function automatically stops all production of radiator heat or under floor heating when the outdoor 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 hot water is being produced The circula tion pump will be exercised for 1 minute per day The factory set value for activating heat stop is an outdoor temperature of 17 C If the heat stop function is active the outdoor temperature must drop 3 C when setting before the heat stop stops MIN and MAX The MIN and MAX values are the lowest respectively highest set point values that are allowed for the supply temperature Adjusting the minimum and maximum supply temperatures is particularly important if your home has under floor heating If your house has under floor heating and parquet floors the supply temperature must not exceed 45 C Otherwise there is a risk that the parquet floors might be damaged If you have under floor heating and stone tiles the MIN value should be 22 25 C even in summer when no heating is required T
5. 30 VMBME102 12 2 Display The display of the control computer shows information about the heat pump s operation status and any alarms in text form The status indicated by symbols is also shown in the lower section which shows the heat pump s active process Operating mode Appears with applicable heat pump operating status text Operating mode Meaning OFF The installation is fully switched off A Remember that if the operating mode OFF is to be used for long periods during the winter the water in the heating system in the installation must be drained otherwise there is a risk of frost damage AUTO The heat pump and the auxiliary heater are automatically controlled by the control compu ter HEATPUMP The control computer is controlled so that only the heat pump unit compressor is allowed to operate ADD HEAT The control computer only permits the auxiliary heater to be in operation This operating mode can be used when a new installation is being used when the brine system is not ready for operation HOT WATER In this mode the heat pump only produces hot water no heat goes to the heating system Symbols Displays the operating status of the heat pump using symbols Symbol Meaning O HP Indicates that the compressor is in operation An F next to the symbol indicates that a flow switch is installed LIGHTNING Indicates that the auxiliary heater is in operation Number o
6. in free air if boreholes are used Check the length of the collector that is being used and that it is connected in parallel not con nected in series if more than 1 coil is being used VMBME102 If cooling is not at the correct level compared with the specific refrigerant and is too low there is insufficient refrigerant in the unit Follow the cor rect procedure depending on type of refrigerant to add the correct amount of refrigerant If there appears to be a leak in the refrigerant cir cuit carry out leak tracing and any necessary cor rective action If leak tracer is not available brush soap water on the suspected leak and look for bubbles Also check for oil as this can come out from the refrigerant circuit If cooling is not at the correct level compared with the specific refrigerant and is too high there is too much refrigerant in the unit Follow the correct procedure depending on type of refrigerant to add the correct amount of refrigerant If the active collector is too short the heat pump cannot receive enough energy from the heat source which results in it requiring an addition to cover the energy requirement If the heat pump cannot cope with the demand replace it with one with a higher output or sup plement it with a higher output auxiliary heater Adjust incorrect values in the heat pump s control computer ROOM Desired indoor temperature CURVE Should be set so that the desired
7. 40M TOPH INTERVAL Time interval between peak heating charging legionella function in days 7D interval OFF 1D 90D TOPH STOP Stop temperature for peak heating charging applies to system VL 60 C interval 50 C 65 C Sub menu SERVICE gt HEATPUMP Used to change the heat pump s operating settings Menu selection Meaning Factory setting mum permitted temperature If this value is exceeded the compressor will stop and start again as soon as the temperature has dropped No alarm shown in the display however a square is shown in the left lower corner of the display INTEGRAL A1 The integral s value for starting the heat pump See the Heat pump section for 60 interval 5 300 more information about Integral and Hysteresis HYSTERESIS If the difference between the actual supply temperature and the calculated sup 10 C at OUTSIDE AIR ply temperature is too great either the integral value is set to start value A1 the temperature of 12 C heat pump starts or the value is set to 0 stops the heat pump interval 1 C 15 C MAX RETURN Stop temperature at high return from the heating system 55 C interval 30 C 70 C STARTINTERVAL Minimum tine interval between two heat pump starts in minutes 20M interval 10M 30M PRESSURE PIPE Sensor on the compressor s hot gas line Value within brackets indicates maxi 130 C interval 100 C 160 C
8. adjust the expansion valve until the correct value is obtained See separate instructions for cooling techniques If overheating cannot be adjusted with the expansion valve or if the capillary tube bulb is damaged replace it If cooling is not at the correct level compared with the specific refrigerant and is too low there is insufficient refrigerant in the unit Follow the correct procedure depending on type of refrigerant to add the correct amount of refrigerant If there appears to be a leak in the refrigerant circuit carry out leak tracing and any neces sary corrective action 13 Drying filter blockage Check the temperature difference above the dry If the drying filter is sealed replace it ing filer A one degree difference is permissible If the difference is greater than 1 degree the filter is blocked Take a reading during operation 14 Blocked evaporator on the If there is no strainer in the brine circuit there is a If the evaporator is thought to be blocked try water side risk of dirt sticking in the evaporator and blocking flushing it If this does not work it must be it Unfortunately there is no easy way of checking if replaced the evaporator is blocked You can carry out a test by allowing the compres sor and circulation pumps to remain in operation Check that the circulation pumps work for circ pumps with a venting screw unscrew it and feel if the pump rotor rotates using a screwdriver
9. bi metal protection in the compressor has tripped 7 The compressor runs back wards The incoming phases have the incorrect sequence only applies to 3 phase heat pumps If the compressor runs backwards it will not cope with compressing the refriger ant and therefore does not pro duce the correct power which leads to the control computer requesting auxiliary heating e Check what the MAX value is set at in the heat pump s control computer It must be adjusted to the unit s maximum supply temperature and the system s delta temperature so that it does not cut at too high a return temperature when the high est supply temperature is transmitted e Check what the return pipe sensor shows is it a plausible actual value If not take a resistance reading from the sensors and check against the ohm table in the Measurement points section Check if a square appears in the display s lower let corner if so the operating pressure switch is open or the delivery pipe sensor triggers an alarm for too high temperature e The operating pressure switch is most easily checked by using a buzzer to see if it is connected e The delivery pipe sensor value is read off from the control computer in the HEATPUMP menu Is it a plausible actual value If not take a resistance reading from the sensor and check against the ohm table in the Measurement points section e The compressor has been stopped by the deliv ery pipe
10. water production works as it should drain the hot water so that the heat pump starts to produce the hot water When done read off the temperature on the top sensor and on the start sensor The top sensor should show a temperature of around 50 55 C and the start sensor around 45 48 C If after completed hot water production these temperatures are obtained this means that you have the correct temperature and vol ume of hot water in the water heater 51 14 7 Operational problem Heating comfort Problem Too cold 1 The heat pump s control computer is not Check the ROOM and CURVE and MAX set Adjust incorrect values in the heat pump s set adjusted to the customer s requirements tings control computer wishes ROOM Desired indoor temperature CURVE Should be set so that the desired indoor temperature ROOM is maintained regardless of the outdoor temperature MAX Highest set point value on the supply pipe regardless of the outdoor temperature 2 Incorrect operating mode set in the heat Check which operating mode is set If the incorrect operating mode is set pump s control computer change to the desired operating mode 3 Sensor fault OUTDOOR ROOM SUPPLY Check what the relevant sensor shows is ita If the sensor is defective replace it PIPE RETURN PIPE plausible actual value Measure the resistance of the sensor check against the ohm table in the Measurement points section 4 The 3 wa
11. 2 Removing the front cover A NOTE Do not damage the electrical wiring for the control system when the front cover is removed To install the heat pump and water heater the front covers must be removed Figure 13 Removing the front cover Unscrew the screws 3 2 Slide the front cover 2 upwards and carefully lift it off upwards and forwards 3 Place the front cover next to the heat pump 4 3 Unpacking and installing the outdoor unit The outdoor unit is packed and delivered in a wooden crate 1 Start by unpacking the unit from the wooden crate 2 Check that the delivery is complete it must contain the outdoor unit front cover cover as well as a package containing the disas sembled stand including necessary screws nuts and washers 4 Figure 14 Assembling the stand 3 Screw the two horizontal struts together 1 using the two ends 2 The curved edge of the horizontal struts must be facing upwards Screws and washers for installation are supplied Press the adjustable feet 3 into the holes under the ends 5 There are two pre drilled holes in the bottom plate of the out door unit where the stand is screwed into place with 2 screws per side 1 0 VMBME102 Figure 15 Front cover preparations 6 Screw the three screws 4 into place from underneath in the pre drilled holes at the front edge of the outdoor unit 7 Hook the lower edge of the front cover onto the three protrud ing
12. 54 A D 54x9mm 5211 57915001 2 Flexible hose R20 L 600 9360 55453A00 1 Filler cock DN 25 9360 52488001 1 Dirt filter with shut off DN25 Figure 1 Dimensions and connections 9360 51738005 2 Straight connection LK 303 28xR25 ai Position Name 9360 51738008 4 Straight compression connection Heat pump 22 xR20 1 Brine out during defrosting 28 Cu 2 Return pipe water heater 28 Cu 3 Brine in z 4 Heating system supply pipe 22 Cu 6 10 kW 28 Cu 12 kW Sizes 12 kW 5 Heating system return pipe 22 Cu 6 10 kW 28 Cu 12 kW 6 Brine out normal operation Part no Quantity Name Water heater 9680 5796A00 1 Document set 7 Brine in during defrosting 8 Water heater return pipe 9674 57902001 1 Transparent binder 9 Bleed valve at stainless steel water heater 10 Brine out during defrosting 9360 47054001 1 Safety valve 9 bar 1 2 11 Domestic hot water 22 Cu 12 Cold water 9588 51618001 1 Kimsafe outdoor sensor 200 035 13 Water heater supply pipe to TWS coil 9360 56335001 1 Safety valve 1 5 bar 1 2 14 Brine expansion line when outdoor unit is positioned at high level 15 Lead in power and sensor lead 9674 24735001 1 Expansion and bleed tank without 16 Lead in sensor lead valve 17 Lifting point 9551 54479001 1 Cardboard packaged top for HP Figure 2 Outdoor unit Dimensions and connections 7 N 2 4 9360 51759007 1 Compression angle joint 28x28 J joint 9674 54168001 1 Pipe insulation IT 9x28 g 3311 55300001 1 Brine in Cu pipe i
13. and outdoor unit and determines when to start and stop the pump as well as producing heat and cooling for the house Heat enters the house via a water borne heating system a low temperature system One is used to cool the house The heat pump s func tion for cooling connects automatically when the outdoor temperature exceeds the set parameter The heat pump unit consists of five basic units 1 Heat pump unit Scroll compressor Stainless steel heat exchanger evaporator and condenser e Circulation pumps for brine and heating systems e Valves and safety equipment and corresponding electrical components Auxiliary heat 15 kW electric heating element 4 5 kW at 230 V heat pump installation e Electric heating element control in a maximum of five steps three steps for 230 V heat pump installation Installed on the heating system s supply pipe Covers the demand of extra energy if the heat pump s capacity is exceeded Automatically connected in the heat pump unit if operating mode AUTO is selected Control equipment not shown in the figure Control computer with graphic display Temperature sensors outdoor supply pipe return pipe brine and hot water e Room sensor option Water heater Water heater with defrosting tank Outdoor unit Air heat exchanger e Fan Figure 44 The basic units of the heat pump 11 3 Outdoor unit Because the heat source for DHP AL is outdoor air the
14. brine Shut off valve part of the filler cock Shut off valve part of the filler cock Shut off valve part of the filler cock Strainer part of the filler cock Shut off valve part of the filler cock NOAMBWN 16 Heat pump Water heater Figure 34 Connection diagram for brine pipes 10 11 12 13 14 VMBME102 Safety valve 1 5 bar Bleed and expansion tank Shut off valve Pressure tank Outdoor unit Flexible hoses not included Bleed valve not included 7 2 Installing brine pipes 1 Determine which side of the heat pump brine pipes are to be connected 2 Route the return pipe through the return pipe rubber bellows on the side of the heat pump 3 Install the return pipe with all the accompanying components Remember to install the filler cock with the filter cover turned upwards 4 Route the supply pipe out through the supply pipe rubber bellows on the side of the heat pump 5 Install the supply pipe with all the accompanying components Install the expansion bleed tank with accompanying safety valve A Bear in mind that the outdoor unit may move during defrosts use flexible hoses to connect the pipes from the heat pump and pipes on the outdoor unit 7 Install the supply and return pipes to the outdoor section Fit both brine pipes with anti diffusion insulation running all the way from the heat pump to the lead in in the wall The brine pipes running outside the house to the collector
15. can be buried however they must be well insulated e e e 1 7 3 Filling the brine system 2 3 A NOTE Before filling the brine system the electrical installa 4 tion must be completed so that it is possible to operate the z brine pump 7 A NOTE Always check local rules and regulations before using anti freeze 10 A NOTE Use anti freeze with corrosion protection additives D mixed to achieve frost protection down to 32 C Calculated volume 1 The volume of the brine system is calculated as follows 5 Heat pump exchanger pipe and outer jacket approximately l 47 litres 3 e Expansion tank approximately 3 litres e Outdoor unit approximately 7 litres 4 e Collector single pipe 28 mm pipe approx 0 5 litre m Filler cock 5 When the filler cock is installed on the return pipe remember to 6 turn the strainer cover upwards in order to minimise the amount of 7 air that gets into the brine system when cleaning the filter 8 9 10 11 OO i gt eH aa Ox XO 13 14 Figure 35 Filler cock 15 Position Name 1 Cover strainer 16 3 Shut off valve 4 Shut off valve 5 Shut off valve 17 6 Strainer 7 Shut off valve VMBME102 Figure 36 Filling the brine system Position Name Return pipe brine Supply pipe brine Shut off valve part of the filler cock Shut off valve part of the filler cock Shut off valve part of the filler cock Strainer part o
16. car ried out by authorized persons Fire risk The refrigerant is not combustible or explosive in normal condi tions VMBME102 Toxicity In normal use and normal conditions the refrigerant has low toxic ity However although the toxicity of the refrigerant is low it can cause injury or be highly dangerous in abnormal circumstances or where deliberately abused Refrigerant vapour is heavier than air and in enclosed spaces below the level of a door for example and in the event of leakage concentrations can arise with a resultant risk of suffocation due to a lack of oxygen Spaces in which heavy vapour can collect below the level of the air must therefore be well ventilated Refrigerant exposed to a naked flame creates a poisonous irritating gas This gas can be detected by its odour even at concentrations below its permitted levels Evacuate the area until it has been suf ficiently ventilated Anyone with symptoms of poisoning from the vapour must imme diately move or be moved into the fresh air Work on the refrigerant circuit When repairing the refrigerant circuit the refrigerant must not be released from the heat pump it must be destroyed at a special plant Draining and refilling must only be carried out using new refrigerant for the amount of refrigerant see manufacturer s plate through the service valves All warranties from Danfoss AS are void if when filling with refrigerant other than Danfoss recommended
17. cause the vibrations 3 Compressor fault Determine whether the compressor is unu If the compressor is defective replace it sually loud 49 Problem Shrieking whistling noise 1 Take overheating readings adjust to the recommended value 1 Whistling expansion valve 2 Open and close the valve fully in and out 3 Adjust the expansion valve to recom mended overheating value again Measurement check the input and output phases for the soft starter as well as the control signals from the control computer see wiring diagram 2 Noise from the soft starter The compressor has an integrated IPR valve that opens at 28 3 bar 3 The compressor s IPR valve opens When the valve opens pressure equalizes between the compressor s high and low pressure side and a milling whistling sound is heard To establish whether the valve opens at the correct pressure connect a manometer on the high and low pressure side When the valve opens this is indicated by the pressure on the low pressure side rising and reaching the pressure on the high pres sure side Check at what pressure the valve starts to open Problem Noise miscellaneous Check if the noise has stopped if not con tinue with point 2 Continue with point 3 If the problem persists replace the expan sion valve If the soft starter is defective replace it If it opens at a too low pressure replace the compressor 1 Vibr
18. expansion tank and the safety valve must slope continuously upwards A continuous upwards slope means that the pipe must not slope downwards from the horizon tal at any point 5 3 1 Connect the cold water and hot water pipes with all the neces sary components Connecting cold and hot water pipes 5 4 Connecting supply and return pipes If the heat pump installation is equipped with a separate water heater an exchange valve must also be installed on the heating system s supply pipe see above system layout All pipes should be routed in such a way that vibrations cannot be transmitted from the heat pump through the piping and out into the building This also applies to the expansion pipe To avoid the transmission of vibrations we recommend that flexible hoses are used for the supply pipe and return pipe on both the heating sys tem and brine system sides Flexible hoses are available to purchase Figure 23 Cut the hose to the correct length to avoid excess bowing out or stretching and offset the ends so that the hose is not installed completely straight U Xx Figure 24 Use fixed pipe bends to avoid excess stress on bends next to connections Connect the supply pipe with a flexible hose connection and with all the necessary components f Danfoss AS The following fi howik i J 2 Connect the return pipe with a flexible hose connection and from Danfoss A gt The following figures show how appropriate an with all
19. hoses on the supply and return pipes Pipe insulation Strainer on return pipe heating system Bleeding of the heating system All radiator valves fully open Expansion tank heating system not included in the delivery Safety valve for expansion tank not included in the delivery Filler cock heating system not included in the delivery Leakage inspection Exchange valve Safety valve for cold water 9 bar Electrical Installation Circuit breaker Fuse protection Direction of rotation of the compressor Coolant pump Outdoor unit Defroster sensor Positioning of the outdoor sensor Control computer settings Exchange valve Brine system Expansion bleed tank on the return pipe when the outdoor unit is located at the same level or lower than the heat pump Pressure tank connected to expansion tank on water heater when the outdoor unit is higher than the heat pump Safety valve 1 5 bar on the expansion bleed tank Filler cock on the return pipe Insulation in the outside wall lead in Other brine pipe insulation Bleeding of brine system Leakage inspection 9 2 Manual test Test operate and at the same time check the function of the tested components Activate MANUAL TEST Ensure that the main circuit breaker is on 2 Select operating mode OFF in the menu INFORMATION gt OPERAT gt 3 Open the SERVICE menu by pressing and CG for three secon
20. no easy way of check ing if the condenser is blocked You can carry out a test by allowing the compres sor and circulation pumps to remain in operation and after a while check that the delivery pipe becomes hot and that the circulation pumps work for circ pumps with a venting screw unscrew it and feel if the pump rotor rotates using a screw driver Then read the temperature on both connection pipes to the condenser If the temperature difference is lt 3 C the condens er is probably blocked If the temperature difference is 3 13 C it is prob ably not blocked If the temperature difference is gt 13 C the con denser is probably blocked Using manometer apparatus and thermometer check that the unit s overheating is correct for the specific refrigerant Then check in the same way that the unit s cool ing is correct See separate instructions for cooling techniques VMBME102 If the operating pressure switch does not open replace it If the high pressure pressure switch opens too soon or is always open replace it Always ensure that there is a sufficiently large water volume for the heat pump to work against i e for the heat to give off its heat to If the non return valve is facing the wrong way turn it If the non return valve has too great an open ing pressure replace it If necessary clean flush the heating system Open closed thermostats valves If there is not sufficient press
21. perature should be 3 5 C for the brine system If none of the delta temperatures are reached the flow of the circulation pumps may need adjusting depending on the applicable heating system Noise check During transportation and installation there is a certain risk that the heat pump can be damaged components may move or get bent and this can cause noise Because of this it is important to check the heat pump when it has been installed and is ready to be com missioned to ensure that everything seems in order The heat pump should be run in both heating and hot water modes to ensure that there is no abnormal noise While doing this check that there is no abnormal noise in other parts of the house Noise is produced from the outdoor unit when the fan is in opera tion check during that manual operation that there is no distur bance in your own home as well as to any neighbours Select operating mode Set the heat pump to the desired operating mode in the menu INFORMATION gt OPERAT If necessary set certain parameters in the control computer such as ROOM and CURVE 9 3 Installing the front cover A NOTE Take care not to damage the front cover 1 Align the upper section of the front cover with both the side channels at the top of the unit and slide it carefully downwards until it covers the entire front of the unit 2 Tighten the screws 9 4 After start up A NOTE Remember that it takes time for the heat pump to heat a c
22. refrigerant it has not been notified in writing that the new refrig erant is an approved replacement refrigerant together with other remedies Scrapping When the heat pump is to be scrapped the refrigerant must be extracted for destruction Local rules and regulations related to the disposal of refrigerant must be followed 1 2 Electrical connection A The electric installation must only be carried out by an authorised electrician A The electric installation must follow applicable local and national regulations A The electrical installation must be carried out using perma nently routed cables It must be possible to isolate the power supply using an all pole circuit breaker with a minimum contact gap of 3 mm The maximum load for externally con nected units is 2A A Electrical current The terminal blocks are live and can be highly dangerous due to the risk of electric shock The power supply must be isolated before electrical installation is start ed The heat pump is connected internally at the factory for this reason electrical installation consists mainly of the con nection of the power supply A NOTE The room temperature sensor is connected to a safety extra low voltage Follow the separate installation instructions for the room tem perature sensor 1 3 Commissioning A The installation may only be commissioned if the heating system water heater and brine system have been filled and bled Otherwise the circu
23. refrigerant not enough refrig erant in the system 3 Changed conditions Have you increased your heating and or hot water demand 54 Using manometer apparatus and thermom eter check that the unit s overheating is correct for the specific refrigerant Then check in the same way that the unit s cooling is correct See separate instructions for cooling techniques If the heat pump has been dimensioned for a certain demand and this demand is increased the heat pump might not be able to maintain the desired room temperature If hot water consumption increases a larger proportion of time is used to produce hot water which means less time for heat production VMBME102 Adjust incorrect values in the heat pump s control computer ROOM Desired indoor temperature CURVE Should be set so that the desired indoor temperature ROOM is maintained regardless of the outdoor temperature MIN Lowest set point value on the supply pipe regardless of the outdoor temperature on the condition that heat stop does not apply MAX Highest set point value on the supply pipe regardless of the outdoor temperature CURVES 0 5 The supply temperature can be adjusted up or down 5 C at these outdoor tem peratures HEATSTOP Stops all production of heat when the outdoor temperature is the same as or greater than the set value To exit heat stop the outdoor temperature must drop to 3 C below the set value e Check
24. sensor and you have established that it shows the correct temperature This may have been caused by a leak in the refrigerant circuit Check if the heat pump s control computer indi cates that the compressor is in operation and if there is voltage between soft starters A1 and A2 Then read off and check that there is voltage on the compressor s three electrical connections L1 L2 and L3 If the text ERR PHASE SEQ appears in the display when the heat pump is powered only appears in the first 10 minutes this means that the phases have the incorrect sequence e When the compressor is running check the delivery pipe temperature by feeling the delivery pipe that should be hot not just warm even a lit tle distance from the compressor if the phases are correctly sequenced When the compressor runs with the phases incorrectly sequenced a strange noise may be heard loud rattling when the compressor runs backwards Check the alarm that is indicated in the display Rectify the problem and rest the alarm See the Operational problem Alarm section If the MAX RETURN value is not adjusted for the system according to the troubleshooting window adjust it If the sensor is defective replace it If the operating pressure switch has stuck in the open position try gently tapping on the pressure switch head If this does not help or it sticks in the open position repeatedly replace the pressure switch If th
25. that the room sensor is positioned in a suitable place that is representative of the building and calibrate it if necessary Avoid placing near external doors windows and heat sources Install the outdoor sensor according to the instructions and calibrate it if necessary Listen for air in the heat pump and heating Bleed the heating system circuit according to system the installation instructions If cooling is not at the correct level compared with the specific refrigerant and is too low there is insufficient refrigerant in the unit Follow the correct procedure depending on type of refrigerant to add the correct amount of refrigerant If there appears to be a leak in the refrigerant circuit carry out leak tracing and any necessary corrective action If leak tracer is not available brush soap water on the suspected leak and look for bubbles Also check for oil as this can come out from the refrigerant circuit If the heat pump cannot cope with the demand replace it with one with a higher output or supplement it with a higher output auxiliary heater Problem Runs on electric heating element 1 Operating mode ADD HEAT is selected 2 The compressor cannot run due to an alarm 3 The integral value has reached the start level for the auxiliary heater 4 Peak heat operation legionella function is running 5 The heat pump has stopped on HIGH RETURN 6 The compressor runs back wards Incomin
26. that there is a demand for heating production and that no start delay is active EVU STOP Indicates that the additional function EVU is active This means that the heat pump is off as long as EVU is active VMBME102 31 Message Meaning NO DEMAND HEAT Indicates that there is no heating production demand HIGHPRESS ERROR Alarm that indicates that the high pressure switch has deployed LOWPRESS ERROR Alarm that indicates that the low pressure switch has deployed MOTOR P ERROR Alarm that indicates that the motor protection has deployed BRINEFLOW LOW Appears if the accessory flow switch is installed Alarm that indicates that the flow in the brine system is low SENSOR Alarm that indicates a faulty sensor HEATPUMP START MIN Indicates that there is a heating production demand and will start in the specified number of minutes HEATPUMP ADD HEAT Indicates that heat production is active with both compressor and auxiliary heater START_MIN Indicates that there is a demand for heating production but that a start delay is active ADD HEAT Indicates that there is an auxiliary heater demand DEFROST Displayed if defrosting is active 32 VMBME102 13 13 1 Menus Main menu INFORMATION This menu is used to change the heat pump s operating modes and adjust the heat curve History and operating times can also be viewed here Open the menu by press
27. the bulb is correctly installed Using manometer apparatus and thermometer check that the unit s overheating is correct for the specific refrigerant Then check in the same way that the unit s cool ing is correct See separate instructions for cooling techniques VMBME102 open the bleed screw and try to release the paddle wheel using a screwdriver for example Open closed valves or taps Check and if necessary clean the strainer If necessary bleed the heating system accord ing to the installation instructions If a cable has come loose connect it If there is a cable break replace the cable If the low pressure pressure switch opens too soon or is always open replace it If the incorrect type of anti freeze is used the entire system must be drained and refilled with a new mixture If the mixture is not in accordance with the instructions it must be remixed in an external container This is because the fluids do not mix with each other well if one is filled directly into the system If the active collector is too short the heat pump cannot receive enough energy from the heat source which results in it requiring an addition to cover the energy requirement If a longer collector is being used than recom mended for the specific heat pump it must be divided on several parallel connected coils If the overheating reading does not corre spond with the instructions for the specific refrigerant
28. the necessary components including a filter inappropriate installations look using this type of hose 3 Insulate the supply and return pipes To avoid noise caused by pipe mounting rubber coated clamps should be used to prevent the transmission of vibrations However Connect the expansion tank to the expansion outlet 22mm Cu installation should not be too rigid and the clamps must not be too on the top of the heat pump tight 5 5 Fill and bleed the heating system 1 Fill the heating system with water via the filling cock to a pres sure of approximately 1 bar 2 Open all radiator valves fully 3 Bleed all radiators 4 Refill the heating system to a pressure of approximately 1 bar 5 Repeat the procedure until all air has been removed Figure 21 Do not twist the flexible hoses as they are installed At 6 Leave the radiator valves fully open threaded connections use a counterhold spanner 5 6 Bleed the water heater 1 If the water heater is of the stainless steel type it must be bled via the bleed valve on top of the water heater Figure 22 Cut the hose to the correct length to avoid excess bowing out or stretching at bends VMBME102 13 6 Electrical Installation Electrical current The terminal blocks are live and can be highly dangerous due to the risk of electric shock The power supply must be isolated before electrical installation is start ed The heat pump is connected internally at the factory for this rea
29. the value back to 0 Test fuse protection 31 Start the circulation pump by setting the value CIRC PUMP to 1 32 Start the compressor by setting the value HEATPUMP to 1 33 At the same time start the auxiliary heating power stages avail able to check that the fuse protection can withstand full power operation 34 Stop the auxiliary heating power stages and the compressor by setting the value back to 0 35 Stop the circulation pump by setting the value back to 0 Test the outdoor unit 36 Start the fan at low speed by setting the FAN L value to 1 Check that the fan runs at low speed 37 Start the fan at high speed by setting the FAN H value to 1 Check that the fan runs at high speed Exit test operation 38 Set the value for MANUAL TEST to 0 Starting circulation pumps manually If any of the circulation pumps do not start it may need to be helped as follows prs Figure 42 Bleed screw location 1 Open and remove the bleed screw on the front of the pump Normally a small amount of water comes out when it is removed 2 Insert a flat blade screwdriver and turn it in the direction of rotation of the pump clockwise 3 Reinstall the bleed screw with its rubber seal Adaptation to the heating system Adjust the heat pump settings to the applicable heating system for instance an underfloor heating or radiator system The delta tem perature must be at least 8 C above the heat pump The delta tem
30. when heat production is permitted 17 C If HEAT STOP applies the outdoor temperature must drop 3 C below the setting interval OFF 0 C 40 C before HEAT STOP stops REDUCTION Only appears if the tariff control function has been activated Lowering set room 2 C interval 1 C 10 C ROOM FACTOR Determines how large an impact the room temperature is to have when calculat ing the supply temperature 2 interval 0 4 0 no impact 4 large impact POOL Expansion card Only appears if POOL is selected The temperature in the pool is controlled by a separate sensor regardless of the heating and hot water system 20 C interval OFF 5 C 40 C POOL HYSTERESIS Expansion card Only appears if POOL is selected In simple terms the POOL HYSTERESIS is the temperature interval between start and stop for pool heating If the difference between the actual supply temperature to pool and the calculated supply tem perature is too great either the integral value is set to start value A1 the heat pump starts or the value is set to 0 stops the heat pump 2 C interval 1 C 10 C Sub menu INFORMATION gt HEAT CURVE 2 The menu only applies if the expansion card is installed and only appears if shunt group sensor is connected and activated in menu SERVICE gt INSTALLATION gt SYSTEM gt SHUNTGROUP Expansion card Used to change settings for heat curve 2 Menu selection Me
31. when installing into a newly built house Avoid positioning the heat pump in a corner as the surrounding walls may amplify its noise It is also important to adjust the heat pump using the adjust able feet so that it is horizontal to the base 2 4 Space requirement around the outdoor unit To ensure the function of the outdoor unit there must be at least 300 mm of space behind and 1500 mm at the front For maintenance work there must be approximately 300 mm of space at the sides of the outdoor unit 300 mm Figure 9 Necessary service space for outdoor unit 2 5 Recommended location of outdoor unit When positioning the outdoor unit note the following The outdoor unit does not have to be positioned in any spe cific direction Noise is produced from the outdoor unit when the fan is in operation remember this when positioning to reduce distur bance in your own home as well as to any neighbours When the outdoor unit is defrosting water will drip straight down under the unit The area around the outdoor unit must therefore be properly drained in order to catch the water approximately 2 litres per defrost Remember that the outdoor unit must have a certain amount of room in order to function and for servicing see Heat pump information chapter Remember that the water that drips from the outdoor unit during defrost must be able to drain into the ground The outdoor unit must therefore not be positioned on as
32. with only heat pump operation ADD HEAT Operation with only auxiliary heater permitted HOT WATER Operation with heat pump for hot water production and auxiliary heater during peak heating charging legionella function MANUAL TEST Only appears when MANUAL TEST in the SERVICE menu is active Outputs con trolled manually Sub menu INFORMATION gt HEAT CURVE Used to change settings for the heat curve Menu selection CURVE Meaning Calculated supply temperature at 0 C outdoor temperature Shown as a graph that also shows MIN and MAX values Factory setting 40 C during under floor heating 30 C interval 22 C 56 C temperature Active at 10 kohm connection at EVU input MIN Minimum permitted supply temperature if the temperature for heat stop has 10 C been reached and the heat pump has stopped interval 10 C 50 C MAX Maximum permitted supply temperature 55 C during under floor heating 45 C interval 40 C 85 C CURVE 5 Local increase or reduction of CURVE at an outdoor temperature of 5 C Shown 0 C interval 5 C 5 C in the graph for CURVE CURVE 0 Local increase or reduction of CURVE at an outdoor temperature of 0 C Shown 0 C interval 5 C 5 C in the graph for CURVE CURVE 5 Local increase or reduction of CURVE at an outdoor temperature of 5 C Shown 0 C interval 5 C 5 C in the graph for CURVE HEATSTOP Maximum outdoor temperature
33. 2 speed rom 340 650 340 650 575 925 575 925 Air flow m3 h 1600 3000 1600 3000 3000 4500 3000 4500 Noise level dB A 1m from the unit 44 52 44 52 47 60 47 60 8m from the unit 29 37 29 37 32 45 32 45 16 m from the unit 24 32 24 32 27 40 27 40 Nominal flow brine lit s 0 32 0 49 0 58 0 66 heat transfer fluid kPa 0 15 0 21 0 25 0 29 External available pressure brine kPa 79 63 47 57 heat transfer fluid kPa 112 110 112 106 Weight heat pump outdoor sec tion kg 154 80 154 80 154 80 162 80 Max Pipe length 28mm total between indoor and outdoor unit m 60 30 30 60 30 30 60 30 30 60 30 30 1 Tested at outdoor air temperature heating medium out 7 35 C and 7 50 C excluding circulation pumps and fan 2 Tested at outdoor air temperature heating medium out 20 35 C and 20 50 C excluding circulation pumps and fan 3 Heat pump with 3 kW auxiliary heater 4 Heat pump with 6 kW auxiliary heater 5 Heat pump with 9 kW auxiliary heater 12kW auxiliary heater 715kW auxiliary heater 8 Noise level measured at SEMKO according to EN ISO 3744 9 The pressure that must not be exceeded outside the heat pump without falling below the nominal flow VMBME102 VMBME102
34. 5 Ensure that the brine pipes 2 are centred in the insert pipes 1 so that the insulation is distributed equally on all sides 6 Seal the insert pipes 1 with a suitable sealant foam 4 VMBME102 9 4 Unpacking and installation 4 1 Setting up Both the heat pump and water heater are prepared to be connected together either to the left or right of each other When setting up the heat pump and water heater the heat pump must be placed in the direction of where the brine pipes are to be connected The water heater should then be placed on the oppo site side and should be positioned next to the heat pump The heat pump and water heater have feet that can be adjusted 20 mm to compensate for irregularities in the surface on which they are sitting If the surface is so irregular that the feet cannot compensate for it the installation engineer must remedy this It is recommended that a condensation drain be installed from the drain pipe of the drip tray while the heat pump is on its side The drain pipe opens through a hole in the base plate and has a 10 mm hose connection 1 Move the heat pump and water heater to the installation site 2 Remove the packaging Figure 11 Condensation drain connection 3 Install a condensation drain if required Figure 12 Adjusting the heat pump 4 Set up the heat pump and water heater in the installation site 5 Adjust the feet 1 so that they are horizontal 4
35. 50kPa 1 5bar Close valve 5 Stop the external pump 11 and disconnect the filling equip ment Install insulation on the filler cock 17 7 4 Bleeding and post filling the brine circuit A NOTE When topping up the brine pump must be running 1 Start the brine pump in the control computer menu SERVICE gt MANUAL TEST gt BRINEPUMP set the value to 1 2 Check that the level in the bleed tank 9 has stabilised If the level is not stable there is air in the system 3 Dismantle the safety valve 8 on the bleed tank Top up with brine to 2 3 of the tank through the connection on which the safety valve 8 was installed 5 Leave the brine pump running so that that the air in the system collects in the bleed tank 6 As air separates in the bleed tank the fluid level drops top up as in step 4 7 Reinstall the valve 8 when all air has been removed from the system 8 Open valve 8 and release any overpressure The fluid level should not fall below 2 3 of the height of the tank 9 Check that valve 3 is closed 10 Stop the brine pump in the control computer menu SERVICE gt MANUAL TEST gt BRINEPUMB set the value to 0 11 Switch to the desired operating mode if the heating system has been filled and bled Collect any excess brine in a plastic container for topping up the system if necessary leave it with the customer 8 Installing accessories additional functions 8 1 Room temperat
36. ALARM BRINE PRESSURE PIPE OUTDOOR STOP SHUNT COOLING ADD HEAT INTEGRAL A2 HYSTERESIS MAXSTEP MAX CURRENT SHUNTTIME HOT WATER STOP MANUAL TEST MANUAL TEST HEATPUMP BRINEPUMP CIRC PUMP VXV HOT WATER SHUNT 1 ADD HEAT 1 ADD HEAT 2 ADD HEAT 3 SHUNT DEFR FANL FAN H ADD HEAT EXT ALARM SHUNT COOLING SHUNTGROUP COOLING PASSIVE COOLING A VXV POOL INSTALLATION SWEDISH SYSTEM HEAT SOURCE HEATING SYSTEM COOLING POOL SHUNTGROUP ADD HEAT SERVICETIME FACTORY SET RESET OPERAT TIME CALIBRATION SENSOR LOGTIME BRINETIME ON BRINETIME OFF TOPH TIME TOPH TIME D DEFROST DEFR CURVE 0 DEFR CURVE XX DEFR TEMPERATURE STOP DEFR BELOW 5 C DEFROST MIN TIME DEFROST DEFROST SENSOR 36 VMBME102 Sub menu SERVICE gt HOT WATER Used to change the settings for hot water production Menu selection Meaning Factory setting START Start temperature for hot water production Shows the actual hot water tem perature and the value within brackets indicates the start temperature 40 C at OUTSIDE AIR temperature of 38 C interval 30 C 55 C in minutes HOT WATER TIME Time for hot water production during combined hot water and heating demand 40M up to 8kW in minutes 20M 10kW and more interval 5M 40M HEATING TIME Time for hot water production during combined heating and hot water demand 20M interval 5M
37. E Expansion card Operating time active cooling Sub menu INFORMATION gt DEFROST Used to obtain information about outdoor unit defrosting and to make certain settings Menu selection Meaning Factory setting DEFROSTS Total number of defrosts carried out BETW 2 DEFR The operating time of the compressor in minutes between the 2 last defrosts TIME SINCE DEFROST The operating time of the compressor in minutes since last defrost FAN H OFF AT Fan high speed is deactivated at this temperature and low speed is activated 12 C interval 10 C 20 C DEFROST CURVE Here the angle of the defrost curve can be changed using the right hand arrow 10 C and by either pressing or Change the start temperature for defrost interval 13 C 7 C MANUEL DEFR By using the right hand arrow or defrost can be started manually shunts 0 interval 0 1 20 C for 10 minutes VMBME102 35 13 2 Main menu SERVICE This menu is for use during installation and service to optimise and adjust the operation of the heat pump Access the menu by holding the left and right arrows in for 3 seconds The sub menus available in the SERVICE menu are shown in the following table Main menu Sub menu Selection settings SERVICE HOT WATER START HOT WATER TIME HEATING TIME TOPH INTERVAL TOPH STOP HEATPUMP INTEGRAL A1 HYSTERESIS MAX RETURN STARTINTERVAL
38. E HOT WATER BRINE OUT BRINE IN DEFR SENSOR EXTERNAL INFLUENCE these parameters affect all sensors except the outdoor sensor The parameter compensates for the external influence on the sensor that is mounted in the heat pump 0 interval 5 C 5 C 0 interval 5 C 5 C 0 interval 5 C 5 C 0 interval 5 C 5 C 0 interval 5 C 5 C 0 interval 5 C 5 C 0 interval 5 C 5 C 0 at OUTSIDE AIR 5 interval 0 20 LOGTIME Time interval between collection points of temperature history in minutes The 1M interval 1M 60M history graphs always show the 60 last collection points which means that the graphs can display history from 1 hour up to 60 hours ago The function is not active if there is an active alarm BRINETIME ON Switch on delay for compressor in seconds 30S interval 10S 90S BRINETIME OFF Switch off delay for brine pump in seconds 30S interval 10S 60S TOPH TIME OFF Deactivates time period for peak heating charging applies to system D OFF ON Activates time period for peak heating charging applies to system D VMBME102 39 Sub menu SERVICE gt DEFROST Used to change settings for outdoor unit defrost Menu selection Meaning Factory setting DEFR CURVE 0 Here the angle of the defrost curve starting at an outdoor temperature of 0 C can be changed using the right hand arrow and by either pressing or cha
39. EAT 3 0 stop auxiliary heat step 2 1 start auxiliary heat step 3 SHUNT DEFR opens flow from the defrost tank 0 shunt unaffected closes the flow from the defrost tank FAN L 0 stop fan 1 start fan with low speed FAN H 0 stop fan 1 start fan with high speed ADD HEAT EXT 0 OV on terminal block 283 1 control voltage 230V on terminal block 283 ALARM 0 stop signal on output External alarm Expansion card 1 start signal on output External alarm SHUNT COOLING shuts shunt SHUNTGROUP Expansion card shuts shunt 0 shunt unaffected opens shunt COOLING PASSIVE Expansion card 0 stop passive cooling 1 start passive cooling brine pump starts and shunt cooling regulates to set point value COOLING ACTIVE Expansion card 0 stop active cooling 1 start active cooling brine pump and compressor starts shunt cooling regu lates to set point value VXV POOL Expansion card 0 normal mode for exchange valve 1 pool mode for exchange valve 38 VMBME102 Sub menu SERVICE gt INSTALLATION Used for settings that are set during installation Menu selection Meaning Factory setting SWEDISH Language setting for the control computer SWEDISH SVENSKA NORSK SUOMI DEUTSCH NEDERLANDS ENGLISH FRANCAIS POLSKI DANSK SYSTEM NOTE The menu selec tion in the SYSTEM menu varies depending on the sele
40. Installation and service instructions DHP AL Table of contents Installation instructions 5 Service INSTFUCTIONS cccccccseeree 23 1 Important information Safety regulations 65 5 11 The heat pump cece cece cece cece eee cneceeeceees 23 tI Re frigeratis sc sacavinnoraretintaawennnsvavatiaansaeeaene 5 11 1 General function description 0 eee eeee eee eee 23 1 2 Electrical connection 0 c cece eee e cece eee e eee eee 5 11 2 COMPONEN Vi ccucadschsamvsevusins dhaderetentaates 24 t3 COMMISSIONING vids idee deidiead pd EEEE 5 11 3 QUtdOOF UNIt c ii h ii eiisdevidadadshdinneidadedactsadens 24 2 Heat pump information cccccccccceeeceseeeeeees 6 ThA HOGG tain aena E EA 25 2 1 Heat pump control panel hope Baca PEE ANAE AA 8 11 5 Auxiliary heater 400V saccccnecarcrsaienleed enaa nE Gd decanters 25 22 Space requirement ae ene atte te AE E AA EE A 8 11 6 Auxiliary heater 230V cci decisis dotowiediaswpeweeeanceae 25 2 3 Recommended location 0 0ceceeceeeeeeseeeees 8 11 7 Important parameters ceeeeeee ee ee nena ees 26 2 4 Space requirement around the outdoor unit 9 12 Control computer ccceceecececececcecececsvenseees 30 2 5 Recommended location of outdoor unit 00005 9 12 1 Function description ccccee eee eeeeeeeeeeeee 30 3 Drilling holes for brine pipes OAIT E E EEE ETOT AE 9 12 2 Display
41. Then read the temperature on both connection pipes to the evaporator If the temperature difference is lt 1 C the evapora tor is probably blocked If the temperature difference is 2 6 C it is probably not blocked If the temperature difference is gt 6 C the evapora tor is probably blocked 15 Blocked evaporator on the Using manometer apparatus and thermometer If the evaporator is thought to be blocked by refrigerant side check that the unit s overheating is correct forthe oil for example try blowing nitrogen through specific refrigerant it to release the oil If this does not work it Then check in the same way that the unit s cool must be replaced ing is correct See separate instructions for cooling techniques Problem Alarm HP high pressure pressure switch 1 Blocked strainer in the heating Check that the strainer is not blocked Clean the strainer if necessary system 2 Air in the heating system Listen for air in the heat pump and heating system Bleed the heating system circuit according to the installation instructions 3 Closed or partially closed ther Check that the thermostats valves in the heating Open closed thermostats valves mostats valves in the heating system are open system 4 The circulation pump that is Is there voltage to the circulation pump In the control computer s manual test menu defective or has jammed check that the circulation pump is active Check if there
42. WS coil Connection brine supply during defrosting Bleed valve at stainless steel water heater Tap hot water Cold water Connection to TWS coil Connection expansion line when outdoor unit is positioned at high level Connection brine from heat pump Connection return pipe to heat pump 2 1 Heat pump control panel The heat pump control panel consists of a display four control but tons and an indicator ROOM doe NO DEMAND HEAT The symbols in the display are only examples Certain sym bols cannot be displayed at the same time Figure 6 Display control buttons and indicator for the heat pump The control computer is controlled using a user friendly menu sys tem displayed in the display Use the four control buttons to navigate the menus and increase or reduce the set values An up button with a plus sign Adown button with a minus sign A right button with a right arrow G A left button with a left arrow The main menu INFORMATION is opened by pressing the left or right buttons From INFORMATION one of the four sub menus can be opened OPERAT HEATCURVE TEMPERATURE and OPERAT TIME For installation or service a hidden service menu SERVICE is used This is opened by holding the left and right buttons depressed for three seconds From the SERVICE menu one of the following sub menus can be opened WARMWATER HEATPUMP ADD HEAT MANUAL TEST and INSTALLATION For further informati
43. a E E E E E NaS eg avs Bode 31 Unpacking and installation sseeeeceeeessceuees 10 T3 MENUS osrin i na E a 33 AT SEWN UP eierniie kin E 10 13 1 Main menu INFORMATION 0sseeeeeeee sence es 33 42 Removing the front COVEr ccc ccc cee A 10 13 2 Main menu SERVICE seseris aaret nanio 36 4 3 Unpacking and installing the outdoor unit 10 14 Troubleshooting ssssssssssessssssessssssesesssseeeo 41 44 Installing the defroster sensor 00 eceeeee eee eee 11 TAA Alann list onoarea nan EEEE A S 41 5 Piping installation cccceeccccceeeceeeeeeeeeeeees 12 14 2 Measurement points 60sec eee ee cece teens 41 5 1 Connection diagram c0cecceceseeeeeeeseueess 12 14 3 Operational problems Alarm s eee ee eees 42 52 o Safety VaVe caai rin a a a ee 13 14 4 Operational problem Leakage seeeee ees 48 5 3 Connecting cold and hot water pipes 0 0008 13 14 5 Operational problem Noise cee ee eee eens 49 54 Connecting supply and return pipes 0 0008 13 14 6 Operational problem Hot water 00 eee sees 50 5 5 Fill and bleed the heating system 0 ececeeeees 13 14 7 Operational problem Heating comfort 51 5 6 Bleed the water heater ccccceseeeeeeeeeeeees 13 14 8 Operational problem Miscellaneous 655 54 6 Electrical Installation cece cece reece ee eeeeec
44. alling the front cover 0 cece cece eee e ee eee 21 9 4 After startup cccsecceseccescceseceeecceseseneecs 21 10 Handover to customer ssssssssssosssseesesssseseeo 22 VMBME102 Installation instructions 1 Important information Safety regulations The heat pump must be installed by authorised installation engineers and the installation must follow the applicable local rules and regulations as well as these installation instructions This appliance is not intendend for use by persons including children with reduced physical sensory or mental capabili ties or lack of experience and knowledge unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety gt Children should be supervised to ensure that they do not play with the appliance A The heat pump must be located in a frost free environment A The heat pump must be placed in an area with a floor drain A The heat pump must be located on a stable base The base must be able to support the gross weight of the heat pump when filled see Technical Specification NOTE To prevent leaks ensure that there are no stresses in the connecting pipes NOTE It is important that the heating system is completely bled after installation NOTE Bleed valves must be installed where necessary e Installation must be carried out in accordance with applicable local rules and regulations The ho
45. and any necessary corrective action If leak tracer is not available brush soap water on the suspected leak and look for bubbles Also check for oil as this can come out from the refrigerant circuit 1 Insufficiently tightened connections Locate the leak e Tighten the connection and check that it is sealed e If it is still not sealed replace the entire connection and support sleeve only at soft pipes 2 Cracked nut or connection Locate the leak Replace nut or connection 3 Defective gasket or O ring Locate the leak Replace the gasket or O ring 4 There is no overflow pipe connected to Establish which safety valve does not have Install an overflow pipe according to the the safety valve s an overflow pipe applicable norms 5 Filler valve between incoming cold water and heating system not closed or leaking 6 No condensation drain to heat pump s drip tray 7 Lack of condensation insulation on cold water pipe and or brine pipe 8 Leak at soldered joints 9 Leak at the condenser s drain cock 10 Leak at the condenser s bleed valve 11 Leak at soldered joint on water heater 12 Associated leak on the water heater 13 Associated leakage in the condenser 48 Check whether water continuously leaks from the safety valve on the expansion ves sel on the hot side Try closing the filler valve and see if water stops dripping from the safety valve if not replace the filler valv
46. aning Factory setting CURVE 2 Calculated shunt group temperature at 0 C outdoor temperature Shown as a 40 C graph that also shows MIN and MAX values interval 22 C 56 C MIN Minimum permitted shunt group temperature if the temperature for heat stop 10 C has not been reached interval 10 C 50 C MAX Maximum permitted shunt group temperature 55 C interval 15 C 70 C VMBME102 Sub menu INFORMATION gt TEMPERATURE Used to indicate the prevailing temperatures history and set calculated values History can be accessed to view all the values by pressing the right arrow to present a graph of the last 100 measurement points for the set time interval SERVICE gt INSTALLATION gt LOGTIME In the event of an alarm history stops being logged until the alarm is reset by changing the operating mode to OFF Menu selection Meaning Factory setting OUTDOOR Shows the actual outdoor temperature ROOM Shows the actual set temperature SUPPLY PIPE Shows the actual supply temperature The calculated supply temperature to the heating system group is within brackets During hot water production in operating mode ADD HEAT the value for HOT WATER STOPP 5 is shown within brackets RETURN PIPE Shows the actual return temperature The stop temperature MAX RETURN is within brackets HOT WATER Shows the actual hot water temperature INTEGRAL Shows the actual calcul
47. ated value for integral BRINE OUT Shows the actual temperature for the brine system s supply pipe BRINE IN Shows the actual temperature for the brine system s return pipe POOL Only appears if POOL is selected Shows the actual pool temperature The set Expansion card pool temperature is shown in brackets SHUNTGROUP Only appears if SHUNTGROUP is selected Shows the actual supply temperature Expansion card The calculated supply temperature to the shunt group is within brackets COOLING Only appears if COOLING is selected Shows the actual supply temperature The Expansion card set point value is shown in brackets CURRENT Only appears if CURRENT LIMITER is selected Shows the actual current con Expansion card sumption The set value for MAX CURRENT is shown between brackets Sub menu INFORMATION gt OPERAT TIME Used to show the operating time for each component Time given in hours Menu selection Meaning Factory setting Expansion card HEATPUMP Compressor operating time for both heating and hot water production ADD HEAT 1 Operating time auxiliary heater power stage 1 with full output 3 kW VL ADD HEAT 2 Operating time auxiliary heater power stage 2 with full output 6 kW VL ADD HEAT 3 Operating time auxiliary heater power stage 3 with full output 6 kW VL HOT WATER Operating time hot water with compressor COOLING Operating time passive cooling COOLING ACTIV
48. ating protective sleeves on the pres Establish where the vibration noise is com Prevent the protection sleeve vibrating by sure switches ing from using insulation tape for example Check for electrical steps or similar devices screwed to the heat pump and wall These can cause vibrations and noise 2 Vibration noise from the electrical instal lation Check that the heat pump is level by using a spirit level 3 The heat pump is not level Check that the heat pump is supported by all four feet 14 6 Operational problem Hot water Problem Temperature and or quantity Carry out according to the installation instructions If the heat pump is not level adjust using the feet Check the function of the 3 way valve that it runs between the end positions by run ning a manual test 1 Defective 3 way valve motor Detach the motor and test closing and opening of the valve by pressing the con trol arm 2 Jammed 3 way valve insert The valve is not secure and releases hot water to the radiators during hot water production 3 Air in TWS coil or water outer jacket During hot water production e Listen for air e Check the temperature difference between supply and return pipe VMBME102 50 If the motor is defective replace it If the insert jams remove and clean it or replace it Bleed the system A Large temperature difference can indicate air in the system 4 Start temperature se
49. aximum supply tempera ture and the system s delta temperature so that it does not cut at too high a return temperature when the highest supply temperature is transmit ted e Check what the return pipe sensor shows is it a plausible actual value If not take a resistance reading from the sensors and check against the ohm table in the Measurement points section If the text ERR PHASE SEQ appears in the display when the heat pump is powered only appears in the first 10 minutes this means that the phases have the incorrect sequence e When the compressor is running check the deliv ery pipe temperature by feeling the delivery pipe that should be hot not just warm even a little distance from the compressor if the phases are correctly sequenced e When the compressor runs with the phases incorrectly sequenced a strange noise may be heard loud rattling when the compressor runs backwards Check if a square appears in the display s lower let corner if so the operating pressure switch is open or the delivery pipe sensor triggers an alarm for too high temperature e The operating pressure switch is most easily checked by using a buzzer to see if it is connected e The delivery pipe sensor value is read off from the control computer in the HEATPUMP menu Is it a plausible actual value If not take a resistance reading from the sensor and check against the ohm table in the installation instructions The compre
50. be discon is defective nected from the control equipment or f If the sensor does not give a correct value terminal block the sensor is defective First take a reading from the sensor includ ing cable and check against the ohm table in the Measurement points section If the read off value does not correspond with the table only measure the sensor and check the ohm table in the Measurement points section VMBME102 45 Problem Incorrect phase sequence The incoming phases have the incorrect If the text ERR PHASE SEQ appears in the sequence only applies to 3 phase heat pumps display when the heat pump is powered only appears in the first 10 minutes this means that the phases have the incorrect sequence e When the compressor is running check the delivery pipe temperature by feeling the delivery pipe that should be hot not just warm even a little distance from the compressor if the phases are correctly sequenced e When the compressor runs with the phas es incorrectly sequenced a strange noise may be heard loud rattling when the compressor runs backwards Problem Alarm TS addition Cause If the phases are in the incorrect order switch two incoming phases at the main terminal block and recheck according to the troubleshooting window 1 The overheating protection has tripped Check if the overheating protection has If the overheating protection has tripped trip
51. conditions for starting and stopping the heat pump are described in the Operating conditions chapter 28 VMBME102 HYSTERESIS In order to start the heat pump in advance during sudden changes of the heat demand there is a value HYSTERESIS which controls the difference between the actual supply temperature t and the calculated supply temperature t If the difference is the same or greater than the set HYSTERESIS value x i e there is a heat demand or the heat demand disappears quicker than the usual integral calculation the integral value is forced to either the start value INTEGRAL A1 or to the stop value 0 min SUPPLY TEMP pe HYSTERESIS At gt x HYSTERESIS At gt x Compressor start INTEGRAL TIME Compressor stop 0 Figure 51 Conditions for HYSTERESIS to force the integral value to change VMBME102 29 12 Control computer 12 1 Function description A control computer is used to automatically calculate the heat demand in the house where the heat pump is installed and to ensure that the correct amount of heat is produced and emitted where necessary There are many different values parameters that must be referred to during the calculation of the heat demand During installation use the control computer to set and change certain values that have to be adapted according to the house demand The control computer is also used during service to view alarms and history and to check the value s
52. cted values Tip start in the top menu and work downwards Sub menu SERVICE gt INSTALLATION gt SYSTEM Menu selection Meaning HEAT SOURCE OUTSIDE AIR HEATING SYSTEM VLD SYSTEM COOLING COOLING PASSIVE OFF EXTERNAL INTEGRATED IN HP Expansion card COOLING ACTIVE OFF EXTERNAL value 1 controls to the value that the room sensor has ROOM SENSOR 0 1 Appears if room sensor is installed 0 controls to a constant POOL ON OFF Expansion card SHUNTGROUP ON OFF Expansion card When ON HEAT CURVE 2 is activated in the INFORMATION menu ADD HEAT CONTROLLED CP only OFF FLOW SENSOR ON OFF CURRENT LIMITER ON OFF Expansion card PHASE FAULT OFF PHASE READING 0 10V OFF EXTERNAL ADDITIONAL HEATER Expansion card SERVICETIME FACTORY SET NOTE Only used for test operation Simulates time 60 times as fast which means that the waiting times are eliminated during test operation 0 deactivates SERVICETIME 1 activates SERVICETIME which speeds up the control computer s integral cal culation and start delay by 60 times 0 starting point the value returns to zero after a change R reset factory settings for radiator system G rest factory settings for under floor heating RESET OPERAT TIME 0 no reset of operation times 1 reset operation times to zero CALIBRATION SENSOR Following sensors are in the installation OUTDOOR SUPPLY PIPE RETURN PIP
53. description A heat pump utilises the free solar energy found in a natural heat source such as rock ground ground water or air The heat pump can be compared to a reversed refrigerator In a refrigerator heat is transferred from the inside of the refrigerator to the outside In a heat pump the heat that is stored in a heat source is transferred to the inside of the house The heat pump uses the energy in the heat source and gives back three to four times more heat energy than what it uses in electrical energy The heat pump is therefore a very environmentally friendly and economical way of heating a house In order for the heat pump to be able to retrieve heating energy from the heat source and transfer it to the heating system of the house three separate fluid circuits are required The circuit that retrieves the heating energy from the heat source is called the brine circuit and it maintains a low outgoing temperature to be heated by the heat source The next circuit is called the refrigerant circuit and is a closed circuit which through compression and expansion takes the retrieved heat ing energy and transfers it to the last circuit the heat transfer fluid circuit The heat transfer fluid circuit holds the fluid that circulates in the heating system of the house and in the heat pump s water heater The figure below shows how the different circuits work together in the transfer of heating energy Heating system and water heater Heat
54. ds 4 Set the value for MANUAL TEST to 2 A NOTE Select position 2 to navigate away from the MANUAL TEST menu during ongoing test operation Test the brine pump 5 Start the brine system s brine pump by setting the value BRINEPUMP to 1 6 Check that the brine pump is running by e listening putting a hand on the pump e checking that the level in the expansion tank is stable If the level is not stable there is air in the system e listen for air 7 Ifthe pump does not start see the section Starting circulation pumps manually 8 If there is air in the brine system bleed according to section Bleeding the brine circuit 9 Stop the brine pump by setting the value back to 0 Test the circulation pump 10 Start the heating system circulation pump by setting the value CIRC PUMP to 1 11 Check that the circulation pump is running by listening putting a hand on the pump listen for air 12 If the pump does not start see the section Starting circulation pumps manually 13 If there is air in the heating system bleed according to section Bleeding the heating system 14 Stop the circulation pump by setting the value back to 0 Test the external exchange valve 15 Activate the 3 way valve by setting the value VXV WARMWATER to 1 16 Check that the arm on the 3 way valve changes position 17 If the arm does not change position see the Troubleshooting section in
55. e Check that condensation drain is installed Install the condensation drain that runs out and correctly connected into the floor drain Establish where the condensation is coming The brine pipe must always be insulated Locate the leak 1 Check that the valve is completely closed 2 Check that the sealed cover is sealed In the event of problems with condensa tion on the cold water pipes insulate them Condensation often accumulates in joints and angled sections of the insulation Improve the insulation Drain the system of fluid repair the leak If the leak is on the connection pipe to the heat exchanger also drain the refrigerant side If the sealed cover is not sealed replace the sealed cover or the entire drain tap Check that it is completely closed If it is fully closed and still leaks replace it Locate the leak If there is a leak at the soldered joint replace the water heater e Establish whether water continuously leaks from the safety valve on the expan sion vessel on the hot side e Establish whether water continuously leaks from the safety valve on the cold side e Check for lack of refrigerant in the unit e Check by smelling by safety valve on the hot side open the valve and check VMBME102 If the water heater has a leak replace it If the condenser has a leak replace it 14 Anti freeze is forced out of the safety valve on the expansion tank brine system During the w
56. e a resistance reading from the sensors and check against the ohm table in the Measurement points section 7 Heat production is stopped by the If the flow temperature rises as soon as heat Try increasing the hysteresis value until the HYSTERESIS function production is stopped by HYSTERESIS before heat pump stops on INTEGRAL instead INTEGRAL reaches 0 there may be heating aes e Open thermostats valves in the heatin deficit in the house P 9 system and check that the heat pump stops e Check if heat production stops because on INTEGRAL the hysteresis value is set too low See the an i If the heating system is deemed to be installation instructions for factory setting under dimensioned the system must be e Check if heat production stops because extended increase the heat emitting sur thermostats valves in the heating system are face closed or partially closed e Check if heat production stops because the heating system is under dimensioned 8 The auxiliary heater is not permitted to cut Check the set value on MAXSTEP in the heat If necessary adjust the MAXSTEP value in the in with sufficient output pump s control computer heat pump s control computer Value set too low on MAXSTEP MAXSTEP 1 3 kW MAXSTEP 1 3 kW MAXSTEP 2 6 kW MAXSTEP 2 6 kW MAXSTEP 3 9 kW MAXSTEP 3 9 kW MAXSTEP 4 12 kW MAXSTEP 4 12 kW MAXSTEP 5 15 kW MAXSTEP 5 15 kW 52 VMBME102 9 The external aux
57. e 14 14 9 Operational problem Outdoor unit s2204 60 6 1 Connecting the power supply three phase 400V AC 14 15 Technical atari eooi6o sia sseierai ssese e cine aiais eie10 8 a 6 arnasiv se 61 6 2 Connecting the power supply single phase 230V AC 14 6 3 Connecting the outdoor sensor eee e eee eee 14 6 4 Changing the language in the control computer 15 6 5 Changing the number of auxiliary heating power stages 15 6 6 Connecting the outdoor unit cece eee ee eee 15 6 7 Connecting the defroster sensor eeee eee ee 15 6 8 Connecting the exchange valve cece eee eee 15 7 Brine installation cece cece cece cence enaa 16 7 1 Connection diagram ccc eee orrn orinar 16 7 2 Installing brine pipes cece eee cence eee eens 17 7 3 Filling the brine system 0 cece eee eee e eens 17 74 Bleeding and post filling the brine circuit 18 8 Installing accessories additional functions 6 18 8 1 Room temperature SeENsOr cece eee e eee eee eee 18 8 2 EVUMUNCHION a iss oleae inrri raia aaetinredeens 18 8 3 Tariff Ontol ssanie aaa 18 8 4 Higher hot water temperature cee eee eee 19 9 Startupsncsndiacs cctsivcswsd iendiatinmsaesieess daseseses 20 9 1 Installation checklist 0 cece cece eee inasa 20 92 Manualltesty catcascomeansaceensart e a e vacate 20 9 3 Inst
58. e delivery pipe sensor is defective replace it If the delivery pipe temperature gets so hot that the compressor stops start by leak tracing the unit Rectify the leak if a leak is found If no leak is found try draining and refilling the unit and then restarting the heat pump and seeing what the delivery pipe temperature is If the problem per sists replace the compressor If there is voltage on the compressor s three elec trical connections and the overheating protection does not close when the compressor has not run and has cooled down for at least 1 hour replace the compressor If the phases are in the incorrect order switch two incoming phases at the main terminal block and recheck according to the troubleshooting window Problem The heat pump consumes too much energy 1 Blocked strainer in the heat Check that the strainer is not blocked Clean the strainer if necessary ing system 2 The compressor cannot run Check the alarm that is indicated in the display Rectify the problem and rest the alarm See the due to an alarm Operational problem Alarm section 3 Incorrect flow over hot side Measurement check what the difference between of the heat pump the supply and return pipe is using a thermometer At The difference should be about 7 10 C can vary depending on refrigerant A lower At results in reduced efficiency in the heat pump Adjust the system to obtain the correct At Measurement ch
59. eck what the difference between the supply and return pipe is using a thermometer At The difference should not be more than 4 C A greater At results in reduced efficiency in the heat pump 4 Incorrect flow in the brine circuit If the difference is greater than 4 C note what is causing it E G Dirt in the filter system restric tions system with high pressure drop VMBME102 56 5 The heat pump s control computer is not set adjusted to the customer s requirements wishes 6 The interval for peak heat operation has changed to a lower value than the factory set value This results in the heat pump going into peak heat operation more often than calculated 7 The heat pump has stopped on HIGH RETURN 8 The compressor runs back wards Incoming phases are in the incorrect order If the com pressor runs backwards it will not cope with compressing the refrigerant and therefore does not produce the correct power which leads to the control computer requesting auxiliary heating 9 The compressor has been stopped by the operating pres sure switch or delivery pipe sensor 10 Expansion valve defective or incorrectly set Check the ROOM and CURVE and MIN settings Check the specified interval for peak heat opera tion in the control computer see instructions for relevant model e Check what the MAX RETURN value is set at in the heat pump s control computer It must be adjusted to the unit s m
60. ection cable through the cable bushing in the top panel to the terminal block 2 Connect the exchange valve to the terminal blocks according to the connection diagram VMBME102 1 5 7 Brine installation 7 1 Connection diagram Pipe connections in image 1 Brine out during defrosting 3 Brine in 6 Brine out normal operation 7 Brine in during defrosting 10 Brine out during defrosting 1 0 4 Brine expansion line when outdoor unit is positioned at high level Moved supply pipe sensor for the brine system Bleed valve Safety valve 1 5 bar Alternative 1 Location of the brine circuit s bleed and expansion tank when the out door unit is located at the same level or lower than the heat pump Shut off valve 8 ae e Brine circuit Filler cock Heat pump Safety valve 1 5 bar Alternative 2 Location of the brine expansion tank when the outdoor unit is higher than the heat pump Water heater Brine flow during defrosting Figure 33 Principle solution for pipe installation 7 If the outdoor unit is installed higher than the heat pump the expansion outlet must be l used together with a pres If the outdoor unit is installed at the same level or lower than the heat pump the accompanying plastic vessel can be used The upper part of the outdoor unit must then not exceed the fluid level in the vessel Position Name Return pipe brine Supply pipe
61. ector too long pressure drop too great 11 Expansion valve defective or incorrectly set 12 Lack of refrigerant not enough refrigerant in the system 42 e That the circulation pump spins e That the shut off valves are open e That the strainer is not blocked e That no air is in the heating system e Check that both cables are connected on the pressure switch e Using the buzzer check that there are no cable breaks In order to do this disconnect the cables from the pressure switch and circuit board Incorrect pressure switch installed Higher break pressure than intended See marking Pressure switch fault opens at a higher pressure than indicated mark pressure Check using the manometer apparatus e Defective pressure switch always open Check that the correct type of anti freeze is used Check the freezing point of the mix using a refrac tometer e Check the length of the collector that is being used and compare with the collector length in the dimensioning documentation In addition check that the collector is not sus pended in free air if boreholes are used Check the length of the collector that is being used and that it is connected in parallel not connected in series if more than 1 coil is being used Using manometer apparatus and thermometer check what the overheating reading of the unit is Also check that bulb and capillary tube are undam aged and that
62. ed only appears in the first 10 minutes this means that the phases have the incorrect sequence e When the compressor is running check the delivery pipe temperature by feeling the delivery pipe that should be hot not just warm even a lit tle distance from the compressor if the phases are correctly sequenced When the compressor runs with the phases incorrectly sequenced a strange noise may be heard loud rattling when the compressor runs backwards If the heat pump has been dimensioned for a certain demand and this demand is increased the heat pump might not be able to maintain the desired room temperature e If hot water consumption increases a larger proportion of time is used to produce hot water which means less time for heat production only applies to VL systems Problem The auxiliary heater is in operation but not the compressor 1 Operating mode ADD HEAT is selected 2 Peak heat operation legionella function is running If this operating mode is selected the auxiliary heater is used for heating and hot water produc tion not the compressor Check if the heat pump runs peak heat See the instructions for the relevant model VMBME102 If the auxiliary heater is in operation because the integral value has counted down to the start value the computer reacts as it should see the Heat pump section for further information Peak heat operation occurs in connection with hot water product
63. em Outdoor unit Problem Noise loud noise 1 Positioning the outdoor unit Determine whether the outdoor unit can be When positioning the outdoor unit its moved to a more suitable location direction does not affect its performance The outdoor unit does not need to be posi tioned as close to the heat pump as neces sary it can be positioned as far as 30 pipe metres way 2 Connection wall lead ins Check that the unit is installed according to Rigid mountings can generate noise from the instructions the outdoor section via walls in the house Is the outdoor unit secured to the wall Problem Defrosting problems 1 Location calibration of the outdoor sensor Check that the outdoor sensor is installed Install according to the instructions and according to the installation instructions calibrate if necessary Alternatively the and that it is correctly calibrated outdoor sensor can be located behind the outdoor unit 20 cm out from the rear side of the outdoor unit 2 Brine temperature in out Measurement check the temperatures with If necessary calibrate BRINE IN and BRINE a thermometer OUT in the heat pump s control computer Problem Build up of ice under and around the outdoor unit Insufficient drainage Does a lot of ice accumulate under and Drain the ground under and around the around the outdoor unit because the melt outdoor section ed water has no where to run or Install a drip tray wit
64. es signals from the control there must be voltage between A1 amp A2 on computer replace it the soft starter the soft starter releases all three phases down to the compressor 3 Defective contactor Measurement check and establish that If the contactor does not release the phases when the control computer gives a signal when it receives signals from the control there must be voltage between A1 amp A2 computer replace it on the contactor the contactor releases all three phases down to the compressor 4 Defective or incorrectly set motor protec Use a hook on meter to establish when the If the motor protection is defective replace tion motor protection deploys check what the it motor protection is set to Compare with the table 5 Cable break Check the supply to the motor protection If a cable is damaged replace it soft starter compressor 6 Defective compressor Measurement check the three phases each If the compressor is defective replace it to zero at the compressor Deviations from the average of the three values must not be more than 12 on any of the phases If measurement checking the winding s impedance the same value must be on all three windings If incorrectly set adjust to the correct value Problem Alarm sensor all Sensor fault alternatively cable fault e When reading the resistance of the sen If the sensor gives a correct value the cable sors the sensor leads must first
65. ettings The display window keypad and an indicator are on the front of the control computer It consists of a simple menu system that is used to navigate the desired settings and values ROOM oo The symbols in the display are only examples Certain sym bols cannot be displayed at the same time Figure 52 Display control buttons and indicator for the heat pump Use the four control buttons on the keypad to navigate the menus and increase or reduce the set values An up button with a plus sign A down button with a minus sign A right button with a right arrow A left button with a left arrow The display always shows the set ROOM value and the status of the heat pump There are two main menus that are used to affect the heat pump settings The menus are designed for two categories of user end custom ers and installers who make different settings in the control computer For this reason the service menu is hidden from end customers esa 4 T 3s a SERVICE Figure 53 The menus are reached via different button presses The main menu INFORMATION is opened by pressing the left or right buttons From the INFORMATION menu you can open the sub menus to make settings for the heat pump For installation or service the hidden menu SERVICE is used This is opened by holding the left and right buttons depressed for three sec onds From the service menu you can open sub menus to make advanced settings
66. f auxiliary power stages indicated by digit K A HOUSE Indicates that the 3 way valve position is for heat production for the house aS TAP Indicates that the 3 way valve s position is for hot water production VL SYSTEM Indicates the set system VL D VL F D F F indicates that a flow switch is installed O CLOCK Indicates that tariff control is active TANK Indicates the level of hot water in the water heater During charging the tank is filled and fill ing starts at the set start temperature A lightning symbol by the symbol indicates peak heat ing charging legionella function T SQUARE Either indicates that the operating pressure switch has deployed or that the hot gas tempera ture has reached its maximum temperature DEFROST Displayed if defrosting is active RA play g FAN Displayed if the fan is active L Low speed and H High speed Hi Text Appears with applicable heat pump operating status text Message Meaning ROOM C Shows the set ROOM value Standard value 20 C If the accessory room sensor is installed it shows the desired indoor temperature within brackets and the actual temperature ERR PHASE SEQ Alarm that indicates that there is an incorrect phase sequence to the compressor Only dis play and only the first 10 minutes HIGH RETURN Alarm that indicates that the high return temperature prevents the compressor s operation START Indicates
67. f temperature loss causes e Long water pipes Uninsulated hot water pipes e Hot water pipes routed through cold areas Other causes that can affect the hot water temperature e Is a mixer valve installed in the system Temperature set too low on the mixer valve Leaking mixer valve e Water tap fault Leaking thermostat mixer VMBME102 e If the start value is set too high reduce it to the factory set value e If the system has a high gt 8 C brine tem perature you may have to reduce the start value further for a longer running time If the sensor is defective replace it If the drain water flow is greater than 12I min stratification in the water heater is affected which reduces the hot water capacity Suggested corrective actions e Install a pressure reduction valve on the incoming cold water pipe e Change to a mixer with lower flow e Adjust the drain flow on the existing mixer do not open the tap fully Replace with a larger heater or supplement with an extra heater E G supplement with an MBH TWS Connector or an electric heater If the pressure switch opens at the incorrect pressure replace it The replacement pressure switch can be installed on the service output Schrader valve Replace with a heater with a larger exchange surface If any problems occur during troubleshoot ing as per the points carry out corrective actions To quickly check that the heat pump s hot
68. f the filler cock Shut off valve part of the filler cock Safety valve 1 5 bar Bleed and expansion tank Shut off valve External pump External container Set the heat pump operating mode to OFF in the control com puter menu INFORMATION gt OPERAT Mix water and anti freeze in the correct proportions in an exter nal container 12 Note that each pack must be well mixed Check that the freezing point of the mixture 32 C is reached using a refractometer Fill the system with the mixture using an external pump 11 which can bleed the brine pipes Connect the pressure side of the pump to the filler connection at valve 5 Close valve 4 Open valves 5 and 10 Connect a transparent hose 3 that opens out into the external container 12 Open valve 3 Start the external pump 11 and fill the brine pipes Start the brine pump manually in the control computer menu SERVICE gt MANUAL TEST gt BRINEPUMP set the value to 1 Run the brine pump and the external pump 11 in series until fluid clear of air comes out of the return hose from the valve 3 Stop the brine pump in the control computer menu SERVICE gt MANUAL TEST gt BRINEPUMP set the value to 0 at the same time leave the external pump 11 running Open valve 4 with the external pump running to eliminate the air between the valves 3 and 5 Close valve 3 and pressurise the system using the external pump NOTE Max 1
69. g phases are in the incorrect order If the compressor runs back wards it will not cope with compressing the refrigerant and therefore does not pro duce the correct power which leads to the control computer requesting auxiliary heating 7 Changed conditions Have you increased your heating and or hot water demand If this operating mode is selected the auxiliary heater is used for heating and hot water produc tion not the compressor If ADD HEAT mode is selected and you no longer want it change to AUTO the heat pump then con trols both the compressor and auxiliary heater Check the alarm that is indicated in the display Rectify the problem and rest the alarm See the Operational problem Alarm section Check what the integral value is in the control computer Check if the heat pump runs peak heat See the instructions for the relevant model e Check what the MAX RETURN value is set at in the heat pump s control computer It must be adjusted to the unit s maximum supply tempera ture and the system s delta temperature so that it does not cut at too high a return temperature when the highest supply temperature is transmit ted e Check what the return pipe sensor shows is it a plausible actual value If not take a resistance reading from the sensors and check against the ohm table in the Measurement points section If the text ERR PHASE SEQ appears in the display when the heat pump is power
70. h a drainpipe routed to an indoor drain or gully NOTE A heat ing cable may have to be installed in the drainpipe Problem Water run off by the outdoor unit risk of moisture problems in house foundations Insufficient drainage During some periods when the outdoor Drain the ground under and around the unit is being defrosted large amounts outdoor unit so that it can cope with the 20 40 L day of water can run off extra amount of water produced because of defrosting or Install a drip tray with a drainpipe routed to an indoor drain or gully NOTE A heat ing cable may have to be installed in the drainpipe 60 VMBME102 15 Technical data DHP AL 6 8 10 12 Refrigerant type R404A R404A R404A R404A Refrigerant kg 0 95 1 45 1 40 1 60 Electrical connection V 400V 3 N 400V 3 N 400V 3 N 400V 3 N Rated max output comp kW 2 0 2 3 3 6 44 Compressor AH 3 4 Electric heating element kW 3 6 9 12 15 3 6 9 12 15 3 6 9 12 15 3 6 9 12 15 Fuse A 103 16 209 163 169 20 163 16 205 163 204 255 Fuse A cont 209 25 209 25 209 25 259 257 Specified output kW 6 7 6 1 9 4 8 4 11 3 10 1 13 1 11 9 Efficiency incl circ pump and fan COP 3 7 2 5 4 0 2 8 3 7 2 7 3 9 2 8 Specified output kW2 3 2 3 0 4 5 4 0 5 5 5 0 6 5 6 0 Efficiency incl circ pump and fan2 COP 1 9 1 4 2 0 1 6 2 0 1 6 2 0 1 6 Lowest outside temperature for compressor operation exterior stop 20 C 20 C 20 C 20 C Fan speed
71. heat pump is equipped with an outdoor unit where the brine circuit retrieves energy from the air During operation cold brine is heated in the air heat exchanger To speed up brine heating the outdoor unit is equipped with a fan which increases the air flow through the air heat exchanger The fan is controlled at two speeds by the control equipment in the heat pump 24 VMBME102 11 4 Heating Heating is active when the outdoor temperature is the same as or greater than 17 C adjustable value for HEAT STOP and other operating condi tions are met see the Operating conditions section for more information When the outdoor temperature is greater than 17 C heating stops Outdoor temperature Heating not permitted at outdoor tempera ture greater than HEAT STOP HEAT STOP 17 C M Heating permitted with compressor addition between HEAT STOP and OUTDOOR STOP OUTDOOR STOP 20 c H ene Heat production permitted only with addition at outdoor temp lower than OUTDOOR STOP Supply tem perature Compressor addition if necessary Only addition MAX 55 C Stop compr Start compr Figure 45 Operating conditions for heating The values between brackets are the default values The figure above shows DHP AL operating for heating When heating during the winter months the outd
72. his is to achieve a comfortable floor temperature If your house has a basement the MIN value should be adjusted to a suitable temperature for the basement in summer A condition for VMBME102 27 maintaining the heat in the basement in the summer is that all radiators have thermostat valves that switch off the heat in the rest of the house It is extremely important that the heating system and the radiator valves are trimmed correctly As it is usually the end customers themselves who have to carry out trimming remember to inform them how to carry it out correctly Also remember that the value for HEATSTOP needs adjusting upwards for summer heating TEMPERATURES The heat pump can display a graph showing the history of the various sensors temperatures and you can see how they have changed over 60 measurement points in time The time interval between the measurement points can be adjusted between one minute and one hour factory setting is one minute History is available for all sensors but only the set value is shown in the display for the room sensor The integral value that may appear is the heating system s energy balance INTEGRAL The heat demand in the house depends on the season and weather conditions and is not constant The heat demand can be expressed as temperature difference over time and can be calculated giving an integral value as a result heat demand To calculate the integral value the control computer uses several paramete
73. iliary heater does not start when the heat pump s control computer requests it If an external auxiliary heater is used check that it is correctly installed by test running it in MANUAL TEST ADD HEAT 1 If it does not start at manual test operation check that the start signal voltage comes from the heat pump See wiring diagram Connect the external auxiliary heater accord ing to the instructions Measure the voltage on the control compu ter s probe L2 Oil Electricity 10 Closed or partially closed thermostats Check that the thermostats valves in the Open closed thermostats valves valves in the heating system heating system are open 11 The total output of the heat pump and auxiliary heater is too low in relation to the building s power demand 12 Under dimensioned heating system 13 Changed conditions Have you increased your heating and or hot water demand Problem Too hot What is the building s power demand What is the output of the heat pump What is the output of the auxiliary heater what is it set to Check existing heating system What output is it dimensioned for to pro duce at what supply temperature What output is required to keep the room warm If the heat pump has been dimensioned for a certain demand and this demand is increased the heat pump might not be able to maintain the desired room temperature If hot water consumption increases a larger proportion of time i
74. indoor temperature ROOM is maintained regardless of the outdoor temperature INTEGRAL A1 Start value for the compressor INTEGRAL A2 Start value calculated from A1 for the auxiliary heater If cooling is not at the correct level compared with the specific refrigerant and is too low there is insufficient refrigerant in the unit Follow the cor rect procedure depending on type of refrigerant to add the correct amount of refrigerant If there appears to be a leak in the refrigerant circuit carry out leak tracing and any necessary corrective action If leak tracer is not available brush soap water on the suspected leak and look for bubbles Also check for oil as this can come out from the refrigerant circuit If the active collector is too short the heat pump cannot receive enough energy from the heat source which results in it requiring an addition to cover the energy requirement If a longer collector is being used than recom mended for the specific heat pump it must be divided on several parallel connected coils 5 Changed conditions Have you increased your heating and or hot water demand If the heat pump has been dimensioned for a certain demand and this demand is increased the heat pump might not be able to maintain the desired room temperature If hot water consumption increases a larger proportion of time is used to produce hot water which means less time for heat production only If
75. ing the left or right button The sub menus available in the INFORMATION menu are shown in the following table INFORMATION Main menu OPERATION HEATCURVE TEMPERATURE OPERAT TIME DEFROST HEAT CURVE 2 Expansion card Selection settings AUTO HEATPUMP ADD HEAT HOT WATER MANUAL TEST CURVE MIN MAX CURVE 5 CURVE 0 CURVE 5 HEATSTOP REDUCTION ROOM FACTOR POOL POOL HYSTERESIS CURVE 2 MIN MAX OUTDOOR ROOM SUPPLY PIPE RETURN PIPE HOT WATER INTEGRAL BRINE OUT BRINE IN POOL SHUNTGROUP COOLING CURRENT HEATPUMP ADD HEAT 1 ADD HEAT 2 ADD HEAT 3 HOT WATER COOLING COOLING A DEFROSTS BETW 2 DEFR TIME SINCE DEFROST FAN H OFF AT DEFROST CURVE MANUEL DEFR Menus in italics are only visible if the expansion card is installed VMBME102 33 Sub menu INFORMATION gt OPERATION Used to select operating mode Menu selection Meaning Factory setting OFF The installation is off Any active alarms reset AUTO Automatic operation with both heat pump and auxiliary heater permitted If the number of power stages for auxiliary heating are set to zero SERVICE gt AUX HEAT gt MAX STAGE only AUTO or OFF can be selected as operating mode HEATPUMP Operation with only heat pump permitted NOTE No peak heating charging legionella function
76. inter water surrounding the hoses in the borehole can freeze In some cases the ice can push against the hoses slightly Due to the reduction in volume in the hose the anti freeze fills the expansion tank and eventually forces some fluid out of the safety valve When the ice in the borehole melts and the hose expands and returns to its original state a vacuum is generated which results in a reduction in tank level As the safety valve does not let any air in the expansion tank can retract inwards due to the vacuum created 14 5 Operational problem Noise Problem Noise problem in the radiator system Cause 1 Flexible hoses missing 2 Incorrectly installed flexible hoses 3 Installing suspending pipes Check if the mountings are too rigid right type right sizes and or installed too close together 4 Clicking e Establish when clicking occurs during heating and or in connection with com pleted hot water production e Locate the clicking noises 5 Circulation noise whistling noise in the heating system Check the heating system Closed valves choke valves adjuster valves or other restrictions in the radiator system can cause circulation noise e Is the heating system correctly adjusted for flow e Too great a flow in the heating system can cause circulation noise Problem Loud compressor noise To prevent anti freeze from being forced out from the safety valve you can exchange the e
77. ion card 4 Terminal block 5 Space for Thermia Danfoss Online 6 Warning decal 7 Defroster card 8 Contactor for compressor 9 Automatic fuses 10 Resetting overheating protection 11 Control computer 12 Soft starter card Only available for 400 V Connecting the power supply three phase 400V AC 6 1 NOTE The power cable may only be connected to the termi nal block intended for this purpose No other terminal blocks may be used Incoming 400V heat pump Bridged on delivery Figure 27 Incoming cable to heat pump with circuit breaker A NOTE Supplied with the jumpers shown in the figure 1 Route the power cable through the opening in the top panel of the heat pump to the terminal blocks 2 Connect the power cable to the terminal block 6 2 AN Connecting the power supply single phase 230V AC NOTE The power cable may only be connected to the termi nal block intended for this purpose No other terminal blocks may be used Incoming 230V heat pump Figure 28 Incoming cable to heat pump 1 Route the power cable through the opening in the top panel of the heat pump to the terminal blocks 2 Connect the power cable to the terminal block 6 3 AN Connecting the outdoor sensor NOTE The outdoor sensor is connected with extra low pro tection voltage Follow the specific installation instructions for the outdoor sensor COC 306 Figure 29 Connecting the outdoor sensor Positi
78. ion with the set interval The com pressor should then start to produce hot water and 2 minutes later the auxiliary heater starts the compressor should then stop and the stop tem perature is reached with only the auxiliary heater connected Take no corrective action If the MAX RETURN value is not adjusted for the system according to the troubleshooting window adjust it If the sensor is defective replace it If the phases are in the incorrect order switch two incoming phases at the main terminal block and recheck according to the troubleshooting window If the heat pump cannot cope with the demand replace it with one with a higher output or supple ment it with a higher output auxiliary heater If ADD HEAT mode is selected and you no longer want it change to AUTO the heat pump then con trols both the compressor and auxiliary heater Peak heat operation occurs in connection with hot water production with the set interval The com pressor should then start to produce hot water and 2 minutes later the auxiliary heater starts the compressor should then stop and the stop temperature is reached with only the auxiliary heater connected Take no corrective action this is normal 55 3 The compressor cannot run due to an alarm 4 The heat pump has stopped on high return 5 The compressor has been stopped by the operating pres sure switch or delivery pipe sensor 6 The built in overheating pro tection
79. is voltage to the circulation pump if there is and it does not run the circu lation pump is jammed If this is the case open the bleed screw and try to release the paddle wheel using a screwdriver for example If there is no voltage to the circulation pump check if there is voltage from the control com puter see wiring diagram If there is voltage from the control computer check the com ponents between the control computer and circulation pump If a component is defective replace it 5 Shut off main tap in heating Check that the main tap is open Open closed main tap system 6 Cable break or loose cable to e Check that both cables are connected on the If a cable has come loose connect it high pressure pressure switch pressure switch e Using the buzzer check that there are no cable If there is a cable break replace the cable breaks In order to do this disconnect the cables from the pressure switch and circuit board VMBME102 43 7 The operating pressure switch does not open 8 The high pressure pressure switch opens too soon 9 External system shunt that closes on time setting 10 Incorrectly facing non return valve with too high opening pres sure 11 Large pressure drop in the heating system 12 Overfilled refrigerant circuit 13 Blocked condenser on the water side 14 Blocked condenser on the refrigerant side 44 e Incorrect pressure switch installed Same or higher break
80. lation pumps can be damaged A If the installation is only to be run on auxiliary heating first ensure that the heating system is filled and that neither the brine pump nor the compressor can be started This is carried out by setting the operating mode to ADD HEAT 2 Heat pump information Delivery check 1 Check that there is no transport damage The heat pump is packaged in cardboard 2 Remove the plastic wrapping and check that the delivery con tains the following components Sizes 6 kW 10 kW Part no Quantity Name 9680 5796A00 Document set 9674 57902001 Transparent binder 9360 47054001 Safety valve 9 bar 1 2 9588 51618001 Kimsafe outdoor sensor 200 035 9360 56335001 Safety valve 1 5 bar 1 2 9674 24735001 1 1 1 1 1 1 Expansion and bleed tank without valve 9551 54479001 Cardboard packaged top for HP 9360 51759007 Compression angle joint 28x28 joint Dimensions and connections The brine pipes can be connected on either the left or right hand sides of the heat pump gonn pn 8 7 OO Water heater 9674 54168001 1 Pipe insulation IT 9x28 3311 55300001 1 Brine in Cu pipe in TWS packaging 9684 48342001 2 Rubber bellows for 22 32mm hole 9674 54164001 1 Pipe insulation F
81. mpressor which both increases its temperature and pressure 4 The refrigerant then continues into the second heat exchanger condenser When condensing the refrigerant supplies its heat energy to the heat transfer fluid circuit The refrigerant s temperature decreases and returns to a liquid state 5 The heat transfer fluid circuit transports the heat energy out to the radiators under floor heating or the fan convector system which heat up The refrigerant is then transported through the expansion valve where the pressure drops and the refrigerant starts to boil and then the process starts again VMBME102 23 11 2 Components DHP AL is a heat pump installation for both heating and producing domestic hot water for the home The heat pump uses outdoor air as a heat source and retrieves energy from the air using an air heat exchanger in a separate outdoor unit The compressor in the heat pump is first compressor on the market that is specially developed for heat pumps It also has an integrated electrical heating element which provides auxiliary heat that can be used when the heating requirement exceeds the capacity of the heat pump The heat pump supplies as much of the heat demand as possible before auxiliary heating is engaged and assists The heat pump is equipped with control equipment which is controlled via a control panel The control equipment controls the heat pump unit s included components compressor circulation pumps auxiliary heater
82. n TWS packaging 9684 48342001 2 Rubber bellows for 22 32mm hole us 9674 54164001 1 Pipe insulation F 54 A D 54x9mm 5211 50730A00 2 Flexible hose R25 L 600 9360 56911A00 1 Filler cock DN 32 a Position Name 9360 52488001 1 Dirt filter with shut off DN25 1 Brine in HP Brine out 28 Cu 9360 51738005 4 Straight connection LK 303 28xR25 prine out HP Brine in z86u 9360 51738008 2 Straight compression connection 22 xR20 The outdoor unit is supplied as a package containing e Outdoor unit e Disassembled stand Necessary screws nuts and washers e Defroster sensor VMBME102 Components Position WOONAUNHRWN Position NOWBWN gt Left view Figure 3 Components Name Heating system supply pipe Brine supply during normal operation Return pipe heating system Auxiliary heating immersion heater Electrical panel Heating system circulation pump Evaporator Circulation pump coolant system Exchange valve heating system Drying filter Expansion valve Shunt valve defrosting Brine supply during defrosting Condenser High pressure and operating pressure switch Compressor Figure 4 Outdoor unit components and connections Name Outdoor unit Cover Front cover Stand Cover Connection brine in Connection brine out Front view OMANANBWN VMBME102 11 Figure 5 Water heater components and connections Position Name Defrosting tank Water heater T
83. n the circuit board If the pressure switch is open try carefully tapping the head of the pressure switch with a screwdriver and using the buzzer test to see if it has closed again Replace the pressure switch if it appears to jam repeatedly If the sensor is defective replace it The symbol appears when the delivery pipe temperature is as high or greater than the set value for DELIVERY PIPE If the overheating reading does not corre spond with the instructions for the specific refrigerant adjust the expansion valve until the correct value is obtained See separate instructions for cooling techniques If overheating cannot be adjusted with the expansion valve or if the capillary tube bulb is damaged replace it 47 5 Lack of refrigerant not enough refriger ant in the system Using manometer apparatus and thermom eter check that the unit s overheating is correct for the specific refrigerant Then check in the same way that the unit s cooling is correct See separate instructions for cooling techniques 14 4 Operational problem Leakage Problem Leak fluid side If cooling is not at the correct level com pared with the specific refrigerant and is too low there is insufficient refrigerant in the unit Follow the correct procedure depending on type of refrigerant to add the correct amount of refrigerant If there appears to be a leak in the refriger ant circuit carry out leak tracing
84. nges the start temperature for defrosting 10 C interval 15 C 5 C DEFR CURVE 20 Here the angle of the defrost curve starting at an outdoor temperature of 20 C can be changed using the right hand arrow and by either pressing or EXTERIOR STOP 4 C interval EXTERIOR STOP changes the start temperature for defrosting 8 C EXTERIOR STOP 1 C DEFR TEMPERATURE The temperature shunted to the outdoor unit during a defrost 15 C interval 14 C 20 C STOP DEFR The temperature that must be reached in the Brine In sensor to complete a 11 C interval 7 C 12 C defrost UNDER 5 C DEFR Safety defrosting occurs when the outdoor temperature has been below 5 fora 7D set number of days shunts 20 C for 10 minutes interval OFF 1D 14D MIN TIME DEFROST Minimum time between two defrosts in minutes 45M interval 10M 60M DEFR SENSOR Shows the current air temperature that has passed the outdoor unit 40 VMBME102 14 A 14 1 Alarm list Troubleshooting NOTE This troubleshooting section contains general heat pump information for the whole range and can therefore contain certain points that do not apply to the installed heat pump Shown in display in the event of an alarm To reset alarms 1 5 set the operating mode to OFF or cut the power supply Message Meaning HIGHPRESS ERROR Tripped high pressure switch Compressor stopped No hot
85. old house It is best to let the heat pump work at its own pace and NOT raise or alter any values in the control compu ter to try to heat it up more rapidly A Any alarms that may occur in connection with the installation can be fault traced in the Troubleshooting section in the service instructions VMBME102 21 10 Handover to customer After installation and test operation the customer must be informed about their new heat pump installation Below is a check list regarding the information that you must give the customer The model of the heat pump that has been installed e Run through the Maintenance instructions and show what it con tains Describe the various operating modes and what they mean Describe the most common alarms and corrective actions Demonstrate how to navigate the control computer and which settings the customer can set themselves Demonstrate how to view history and operating times Show the pipe installation and go through the periodic mainte nance actions that the customers must be aware of recommended pressure on manometers fill the heating system exercise safety valves clean strainers Explain how the customer can fine adjust their existing heating system according to the instructions in the maintenance instruc tions The applicable warranties Where the customer is to turn for servicing 22 VMBME102 Service instructions 11 Theheat pump 11 1 General function
86. on about the menus see the service instruc tions The indicator at the bottom of the control panel has two modes e Lit steadily the installation has power and is ready to produce heat or hot water Flashing means an active alarm 2 2 Space requirement To facilitate the installation and subsequent testing and mainte nance it is recommended that there is sufficient free space around the heat pump in accordance with the following dimensions 300 mm on each side 300 mm above 600 mm in front 10 mm behind 300 mm 300 mm 300 mm lt lt gt lt i Figure 7 Necessary service space DF eae S Ue Figure 8 Minimum headroom for heat pump installation 2 3 Recommended location A To avoid condensation problems for the brine pipes as short a brine pipe as possible is recommended The heat pump should be located on a stable floor preferably made of concrete When locating the heat pump on a wooden floor this should be reinforced to take the weight One solution is to place a thick metal plate at least 6mm under the heat pump The metal plate should cover several joists spreading the weight of the heat pump over a larger area If the heat pump is being installed 8 VMBME102 in a newly built house this has normally been taken into account during construction and the joists where the heat pump will be located have been reinforced Always check that this has been car ried out
87. on between terminal blocks 307 and 308 using an external 1 pin timer and a 10 kohm resistor e The extent to which the temperature is lowered is set in the menu INFORMATION gt Heatcurve gt REDUCTION 1 8 VMBME102 8 4 Higher hot water temperature A NOTE Never connect the heat pump to provide a higher temperature unless the heating or hot water systems require it Higher temperatures increase the load on the heat pump If necessary the heat pump can be connected to produce hot ter water for the heating system and hot water system when it is installed SEAN Figure 40 The pressure switches are installed on the compressor s pressure pipe 1 Move the grey cables which are normally connected to pres sure switch A to pressure switch B VMBME102 19 9 Start up NOTE Read the safety instructions A The installation may only be commissioned if the heating system water heater and brine system have been filled and bled Otherwise the circulation pumps can be damaged A If the installation is only to be run on auxiliary heating first ensure that the heating system is filled and bled and that nei ther the brine pump nor the compressor can be started This is carried out by setting the operating mode to ADD HEAT 9 1 Installation checklist Before manual test operation check the following points Piping installation heating system Pipe connections in accordance with the connection diagram Flexible
88. on the outdoor sensor on the north or north west side of the house To measure the outdoor temperature as accurately as possible the sensor must be positioned 2 3 of the way up the facade on houses up to three storeys high For higher buildings the sensor should be positioned between the second and third storeys Its location must not be completely protected from the wind but not in a direct draft The outdoor sensor should not be placed on reflective panel walls The sensor must be positioned at least 1 m from openings in the walls that emit hot air 14 VMBME102 Ifthe sensor cable is connected through a pipe the pipe must be sealed so that the sensor is not affected by outgoing air Then connect the sensor to the heat pump control system in accordance with the instructions below 1 Route the outdoor sensor connection cable through the cable bushing in the top panel to the terminal block 2 Connect the sensor to the terminal blocks according to the con nection diagram 6 4 Changing the language in the control computer If necessary change the language in the control computer menus 1 Ensure that the main circuit breaker is on 2 Open the SERVICE menu by pressing and G for three seconds 3 Change language in the control computer menu SERVICE gt INSTALLATION gt ENGLISH select language and a 6 5 A Ensure that the main circuit breaker is on 2 Open the SERVICE menu by pressing and G for
89. oor unit s air heat exchanger is cooled by the energy exchange at the same time as the humidity causes it to become covered in frost DHP AL has an automatic function to defrost the air heat exchanger using the produced heat energy If necessary a defrosting sequence starts which means the following The defrosting sequence starts when the temperature of the brine reaches its set parameter for defrosting The compressor runs when a start signal initializes the defrosting sequence An exchange valve in the heat pump shifts the direction of flow of the brine so that the fluid flows through the water heater jacket where the heated brine is stored The heated brine melts the frost on the outside of the air heat exchanger When the brine returns from the outdoor unit a temperature of 11 C is maintained so that the air heat exchanger is defrosted sufficiently The exchange valve shifts back the direction of flow of the brine so that normal flow can be resumed e Operation returns to normal heating 11 5 Auxiliary heater 400V The auxiliary heater is made up of an electric heating element on the supply pipe that has three outputs ADD HEAT 1 ADD HEAT 2 and ADD HEAT 3 and can be controlled in five steps Step 1 ADD HEAT 1 3 kW Step 2 ADD HEAT 2 6 kW Step 3 ADD HEAT 1 ADD HEAT 2 9 kW Step 4 ADD HEAT 2 ADD HEAT 3 12 kW Step 5 ADD HEAT 1 ADD HEAT 2 ADD HEAT 3 15 kW In the event of an alarm the auxiliar
90. operation check that there is voltage to the motor see wiring diagram Detach the motor and test closing and opening of the valve by pressing the con trol arm VMBME102 Adjust incorrect values in the heat pump s control computer ROOM Desired indoor temperature CURVE Should be set so that the desired indoor temperature ROOM is maintained regardless of the outdoor temperature MIN Lowest set point value on the supply pipe regardless of the outdoor temperature If the sensor is defective replace it Is the motor being supplied with voltage according to the wiring diagram in both operating instances MANUAL TEST VXV HOT WATER 0 Radiator mode arm out from valve 1 Hot water mode arm positioned towards the valve If there is voltage to the motor but the arm does not shift mode replace it Take out and clean the jammed insert or replace with a new insert 53 Problem irregular indoor temperature 1 The heat pump s control computer is not set adjusted to the customer s requirements wishes 2 Incorrectly positioned installed sen sors 14 8 Check the ROOM and CURVE MIN MAX CURVE5 CURVEO CURVE 5 and HEATSTOP settings Check that outdoor sensors and any room sensors are installed according to the instructions and that they are calibrated Operational problem Miscellaneous Problem The heat pump runs and runs but never stops 1 Air in the heating system 2 Lack of
91. or taps Check and if necessary clean the strainer If necessary bleed the heating system according to the installation instructions The submersible tube can be prised out slightly from the coils using a screwdriver or similar The submersible tube must be vertical 1 Defective sensor Check what the sensor shows is it a plausi ble actual value Measure the resistance of the sensor check against the ohm table in the Measurement points section Check the set value on ALARM BRINE in the heat pump s control computer 2 Brine temperature too low VMBME102 46 If the sensor is defective replace it The alarm is triggered when the tempera ture on BRINE OUT is as low or lower than the set value on ALARM BRINE In the fac tory setting this function is inactive Problem Alarm Brine flow low 1 Incorrect system selected in the control computer If the system does not contain a flow switch but the control computer is set for the sys tem with flow switch this alarm occurs 2 Insufficient flow In the menu SYSTEM check which is selected e Check whether the ground water pump is running Check the flow switch Calibration setting the flow switch e Blocked exchanger If the incorrect system is selected change it The ground water pump must start and run together with the heat pump s integrated brine pump Check against the wiring diagram that the flow switch is correc
92. ows the dimension and connection diagrams in section Heat pump information e Piping installation must be carried out in accordance with appli cable local rules and regulations The hot water tank must be equipped with an approved safety valve supplied Safety valve not included Safety valve 9 bar Mixer valve Filler cock Bleed valve Bleed valve at stainless steel water heater Water heater Figure 19 Principle solution for a pipe installation Position Name 1 Heat pump 2 Supply pipe 3 Return pipe 4 Safety valve not included 5 Expansion tank not included 6 Strainer 7 Flexible hoses 8 Bleed valve 9 Mixer valve 10 Exchange valve 11 Safety valve 9 bar 12 Vacuum valve 13 Non return valve 14 Shut off valve 15 Cold water 16 Hot water 17 Water heater 18 Bleed valve at stainless steel water heater Figure 20 General connection diagram VMBME102 5 2 Safety valves e Radiator systems with a closed expansion tank must also be equipped with an approved pressure gauge and safety valve minimum DN 20 for a maximum 3 bar opening pressure or according to country specific requirements Cold and hot water pipes as well as overflow pipes from safety valves must be made of heat resistant and corrosion resistant material e g copper The safety valve overflow pipes must have an open connection to the drain and visibly flow into this in a frost free environment Connecting pipe between the
93. ped reset it 2 Phase drop e Check if the overheating protection has The alarm occurs when 230 V is not regis tripped tered between incoming L2 on the circuit board and zero on block 220 e Check if any cables at the circuit board or overheating protection are loose or dam aged Press the reset button measurement check for 230 V on the incoming and outgoing connections 3 Overheating protection fault cannot be reset Check what the flow sensor shows is it a plausible actual value 4 Flow sensor fault Measure the resistance of the sensor check against the ohm table in the Measurement points section Check e That the circulation pump spins 5 No or insufficient circulation in the heat ing system e That the shut off valves are open e That the strainer is not blocked e That no air is in the heating system 6 The submersible tube in the electric heat ing element is against the coils Check what the flow temperature is when the overheating protection trips It normally trips at about 95 C Problem Alarm Brine out If the overheating protection has tripped reset it If the cables are loose damaged secure or replace them If the overheating protection is defective replace it If the sensor is defective replace it The circulation pump may have jammed if so open the bleed screw and try to release the paddle wheel using a screwdriver for example Open closed valves
94. phalt or slabs where water cannot drain easily gt PP BP Pe The outdoor unit s adjustable stand must be positioned on a secure base such as wooden sleepers paving slabs or cast footings 3 Drilling holes for brine pipes A NOTE Ensure that the holes for the insert pipes are posi tioned so that there is room for the other installations A NOTE The brine pipes shall have separate lead ins The brine pipes must be insulated from the heat pump through the walls and outside the house all the way to the collector so as to avoid condensation and prevent heat loss If the brine pipes are to be routed above ground drill holes in the walls for them If the brine pipes are to be routed below ground see the instruc tions below Figure 10 Drilling holes for brine pipes Position Name 1 Insert pipe 2 Brine pipe 3 Mortar 4 Sealant 1 Drill holes in the wall for the insert pipes 1 for the brine pipes Follow the dimension and connection diagrams in the section Heat pump information If there is any risk of groundwater infiltration at brine pipe lead ins watertight grommets must be used 2 Position the insert pipes 1 in the holes sloping downwards The inclination must be at least 1cm every 30cm Cut them at an angle as illustrated so that rain water cannot get into the pipes 3 Insert the brine pipes 2 into the insert pipes in the installation room Fill in the holes in the wall with mortar 3
95. pressure than high pressure pressure switch See marking Pressure switch fault opens at a higher pressure than indicated mark pressure Check using the manometer apparatus e Defective pressure switch never opens e Incorrect pressure switch installed As low or lower break pressure than operating pressure switch See marking Pressure switch fault opens at a lower pressure than indicated mark pressure Check using the manometer apparatus e Defective pressure switch always open Check for shunts or valves in the system which are timer controlled that close down the entire or too large a part of the heating system e Check the system s direction of flow and that the non return valve is turned the correct way e Check that the heat pump s external available pressure exceeds the non return valve s opening pressure Dirt in the heating system e Closed or partially closed thermostats valves in the heating system Under dimensioned pipe system Check that the HP s external available pressure exceeds the sys tem pressure drop Using manometer apparatus and thermometer check that the unit s overheating is correct for the specific refrigerant Then check in the same way that the unit s cool ing is correct See separate instructions for cooling techniques If there is no strainer in the heating system there is a risk of dirt sticking in the condenser and block ing it Unfortunately there is
96. rease in supply temperature is needed to increase the indoor temperature 1 Supply temperature Maximum supply tem perature Ol oO 40 24 2 O O 5 2 Q Outdoor temperature Figure 48 Changing the ROOM value changes the heat curve upwards or downwards The relationship of the supply temperature to outdoor temperature will not be affected The supply temperature will be increased or reduced by the same number of degrees all along the heat curve I E the entire heat curve rises or drops instead of the curve gradient changing This method of adjusting the indoor temperatures must only be used for a temporary raise or drop For long term increases or reductions of the indoor temperature the heat curve is adjusted instead Sometimes at outdoor temperatures between 5 C and 5 C part of the heat curve may need adjusting if the indoor temperature is not constant For this reason the control system includes a function adjusting the curve at three outdoor temperatures 5 C 0 C and 5 C This function will allow you to increase or reduce the supply temperature without affecting the heat curve at three specific outdoor temperatures If for example the outdoor temperature is 5 C the supply temperature will change gradually between 0 C and 10 C maximum adjustment being reached at 5 C The figure below shows the adjusted CURVE 5 The adjustment can be seen in the graph in the form of a bump Supply temperature
97. rs A heat deficit is needed to start the heat pump and there are two integral values A1 and A2 which start the compressor and auxiliary heater During heat production the deficit reduces and when the heat pump stops the inertia in the system causes a surplus of heat The integral value is a measurement of the surface under the time axle and is expressed in degree minutes The figure below shows the fac tory settings for the integral values that the heat pump has When the integral value has reached the set value for INTEGRAL A1 the com pressor starts and if the integral value does not drop but continues to rise the auxiliary heater starts when the integral value has reached the set value for INTEGRAL A2 INTEGRAL A1 INTEGRAL A2 INTEGRAL A1 INTEGRAL A2 Integral Heat demand Time Compressor stop Compressor start Compressor start Auxiliary heater si aj Auxiliary heater si al H i i Auxiliary heater stop 660 i i i latest at 60 660 Auxiliary heater Auxiliary heater Figure 50 Starting and stopping heat pump operation based on integral values Compressor No operation No operation Heat pump operation The integral value calculation stops during hot water production and during heat stop Integral value calculation resumes two minutes after completed hot water production to give the heating system time to stabilise the temperature More specific
98. s used to produce hot water which means less time for heat pro duction only applies to VL systems Ensure that available power is at least as great as the building s power demand If the heating system is dimensioned for greater supply temperatures than the heat pump can provide it must be adjusted by increasing the heat emitting surface for example If the room requires a higher output than the heating system can provide extend the heating system If the heat pump cannot cope with the demand replace it with one with a higher output or supplement it with a higher out put auxiliary heater 1 The heat pump s control computer is not set adjusted to the customer s require ments wishes 2 Sensor fault OUTDOOR ROOM SUPPLY PIPE 3 Defective 3 way valve motor The motor should set the valve to the relevant end position depending on operating condi tions If it does not hot water from the water heater will mix with the radiator water 4 Jammed 3 way valve insert If the insert is not sealed hot water from the water heater will mix with the radiator water Check the ROOM and CURVE and MIN set tings Check what the relevant sensor shows is it a plausible actual value Measure the resistance of the sensor check against the ohm table in the Measurement points section Check the function of the 3 way valve motor by test running it manually If the motor does not shift mode during manual test
99. screws 8 Secure the front cover using three screws in the pre drilled holes 5 Figure 16 Tighten the front cover in place 9 Hook the cover at the front edge onto the front cover 6 10 Secure the cover using a screw on each side 7 Figure 17 Secure the cover Figure 18 Finishing by installing the cover 11 Hook the cover onto the stand NOTE Remember that the water that drips from the outdoor unit during defrost must be able to drain into the ground The outdoor unit must therefore not be positioned on asphalt or slabs where water cannot drain easily If this is not possible connect a hose to the defrosting outlet and route it away from the outdoor unit 4 4 Installing the defroster sensor Install the defroster sensor on the reverse of the outdoor unit VMBME102 11 5 A A A 5 1 Piping installation NOTE To prevent leaks ensure that there are no stresses in the connecting pipes NOTE It is important that the heating system is completely bled after installation NOTE Bleed valves must be installed where necessary Connection diagram Pipe connections in image onun RN Water heater return pipe Heating system supply pipe Heating system return pipe Heating system return pipe Bleed valve at stainless steel water heater 11 Tap hot water 12 Cold water 13 Water heater supply pipe to TWS coil 12 Heat pump e Ensure that the piping installation foll
100. son electrical installation consists mainly of the con nection of the power supply The electric installation must only be carried out by an author ised electrician e The electric installation must follow applicable local and national regulations The electrical installation must be carried out using permanently routed cables It must be possible to isolate the power supply using an all pole circuit breaker with a minimum contact gap of 3 mm The maximum load for externally connected units is 2A Electrical connection can also cause noise so this installation must be carried out appropriately The figure below shows an appropriate installation There is approximately 300mm free cable between the heat pump and building however this requires the cable to be securely installed onto the top panel so that the cable cannot be fed into the heat pump It is inappropri ate to bolt trunking between the heat pump and the wall This is because vibrations can then be transmitted from the heat pump through the trunking to the walls of the house Zz 2 DOSCOOOODOD DOOD ODO DOOD 000000 DOGoDOODODO ODO OOD00000000 Figure 25 Recommended distance between trunking on the wall and trunking on the heat pump is 300mm Figure 26 The location of the components on the electrical panel Position Name Terminal block 2 Terminal block applies to the expansion card 3 Space for expans
101. ssor has been stopped by the deliv ery pipe sensor and you have established that it shows the correct temperature This may have been caused by a leak in the refrigerant circuit Using manometer apparatus and thermometer check what the overheating reading of the unit is Also check that bulb and capillary tube are undamaged and that the bulb is correctly installed VMBME102 Adjust incorrect values in the heat pump s control computer ROOM Desired indoor temperature CURVE Should be set so that the desired indoor temperature ROOM is maintained regardless of the outdoor temperature MIN Lowest set point value on the supply pipe regardless of the outdoor temperature If there is a shorter interval between the peak heat productions this explains why the unit consumes more current than calculated but this does not mean for sure that it should be increased there might be a reason why the interval has been changed If the MAX RETURN value is not adjusted for the system according to the troubleshooting window adjust it If the sensor is defective replace it If the phases are in the incorrect order switch two incoming phases at the main terminal block and recheck according to the troubleshooting window If the operating pressure switch has stuck in the open position try gently tapping on the pressure switch head If this does not help or it sticks in the open position repeatedly replace the pressure switch
102. structions for cooling techniques e Check the length of the collector that is being used and compare with the collector length in the dimensioning documentation In addition check that the collector is not sus pended in free air if boreholes are used If the heat pump has been dimensioned for a certain demand and this demand is increased the heat pump might not be able to maintain the desired room temperature e If hot water consumption increases a larger proportion of time is used to produce hot water which means less time for heat production only applies to VL systems Problem Auxiliary heater cuts in too soon 1 The heat pump s control computer is not set adjusted to the customer s requirements wishes 2 Lack of refrigerant not enough refrigerant in the sys tem 3 Short active collector e g short or dry bore hole short surface soil collector 4 Collector too long pressure drop too great 58 Check the ROOM CURVE INTEGRAL A1 and INTEGRAL A2 settings Using manometer apparatus and thermometer check that the unit s overheating is correct for the specific refrigerant Then check in the same way that the unit s cool ing is correct See separate instructions for cool ing techniques e Check the length of the collector that is being used and compare with the collector length in the dimensioning documentation In addition check that the collector is not sus pended
103. t motor to affect the supply tem 60S interval 10S 99S perature in seconds Applies to all connected shunt groups applies to system D or VLD HOT WATER STOP Stop temperature for hot water during ADD HEAT operation applies to the VL 60 C system interval 50 C 65 C VMBME102 37 Sub menu SERVICE gt MANUAL TEST Used to manually test and test operate the heat pump s components or signal outputs Menu selection Meaning Factory setting Expansion card 0 shunt unaffected opens shunt MANUAL TEST Setting options for manual test 0 deactivate manual test 1 activate manual test 2 activate manual test with option of navigating from the SERVICE menu to check that the temperatures rise HEATPUMP 0 stop heat pump does not stop started brine pump 1 start heat pump also starts brine pump NOTE The heat pump cannot be started in the event of an active alarm BRINEPUMP 0 stop brine pump 1 start brine pump CIRC PUMP 0 stop circulation pump 1 start circulation pump VXV HOT WATER 0 heating mode for 3 way valve 1 hot water mode for 3 way valve SHUNT 1 closes shunt applies to D system 0 shunt unaffected opens shunt applies to D system ADD HEAT 1 0 stop auxiliary heat step 1 1 start auxiliary heat step 1 ADD HEAT 2 0 stop auxiliary heat step 2 1 start auxiliary heat step 2 ADD H
104. t too high for hot water production 5 Sensor fault hot water sensor Hot water production is started by the hot water sensor 6 Large drain flow gt 12I min 7 Water heater too small in relation to requirement 8 The operating pressure switch opens too soon at too low a pressure Hot water production ends when the oper ating pressure switch opens 9 Insufficient exchange surface to transfer the heat pump s output to the heater Only applies to heat pumps with a separate heater 10 Heat loss in the hot water pipe Check that the start temperature is correctly set Should not be set above the factory set value Check what the hot water sensor the start sensor shows is it a plausible actual value Measure the resistance of the sensor check against the ohm table in the Measurement points section Check how many litres of hot water approx 40 C per minute drains from the tap Use a clock and bucket to measure the drain flow How large is the requirement and what is the capacity of the heater Check the break pressure using manometer apparatus Is the exchange surface too small Can the heater cope with the heat pump s output Open the hot water tap read off the tem perature on the outgoing hot water pipe from the heat pump and the temperature of the hot water The temperature difference measured between the heat pump and hot water indicates the temperature loss Examples o
105. t water tank must be equipped with an approved safety valve supplied e Radiator systems with a closed expansion tank must also be equipped with an approved pressure gauge and safety valve minimum DN 20 for a maximum 3 bar opening pressure or according to country specific requirements Cold and hot water pipes and overflow pipes from safety valves must be made of heat resistant and corrosion resistant material e g copper The safety valve overflow pipes must have an open connection to the drain and visibly flow into this in a frost free environment The connecting pipe between the expansion tank and the safety valve must slope continuously upwards A continuous upwards slope means that the pipe must not slope downwards from the horizontal at any point e If there is any risk of groundwater infiltration at brine pipe lead ins watertight grommets must be used for more information see section Drilling holes for brine pipes In addition to applicable local rules and regulations the installa tion should be carried out in a manner that prevents vibrations from the heat pump being transmitted into the house causing noise 1 1 Refrigerant A Work on the refrigerant circuit must only be carried out by a certified engineer Although the heat pump cooling system refrigerant circuit is filled with a chlorine free and environmentally approved refrigerant that will not affect the ozone layer work on this system may only be
106. the heat pump cannot cope with the demand replace it with one with a higher output or supple ment it with a higher output auxiliary heater applies to VL systems Problem Short operating times despite heating demand ROOM and or CURVE set too high in combination with a heating system with poor cir culation due to closed radiator valves too small elements or insufficient water volume A tight fitting system with poor pipe dimensions may produce the same phenomena Check if the heat pumps starts if the supply tem perature rises quickly whilst nothing happens to the return temperature If this happens and the heat pump is stopped by the hysteresis function to later drop in tempera ture supply as quickly to start again but cannot due to time conditions in regulation this means that the heat pump cannot transport the heat away from the condenser as it should In such a case hysteresis starts and stops the heat pump often Problem Connection of external AH Incorrectly connected auxiliary heater Does not start when the control computer gives the signal Check the connection against the instructions wiring diagram Test the function in manual mode VMBME102 Adjust ROOM and CURVE if necessary ensure that there is sufficient flow over the condenser and the heating circuit If the auxiliary heater is incorrectly connected reconnect according to the instructions 59 14 9 Operational probl
107. the service instructions Test the compressor 18 Start the circulation pump by setting the value CIRC PUMP to 1 19 Start the heat pump compressor by setting the value HEATPUMP to 1 At the same time as the value is set to 1 for HEATPUMP the brine pump starts 20 VMBME102 A NOTE Risk of burns the pipe can reach 70 80 C Figure 41 The pressure pipe should get hot during operation 20 Check that the compressor is running in the right direction by putting a hand on the pressure pipe and checking that it is hot it sounds normal and there is no noise 21 If the pipe does not get hot or if it sounds abnormal see the Troubleshooting section in the service instructions 22 Stop the compressor by setting the value back to 0 23 Stop the brine pump by setting the value back to 0 24 Stop the circulation pump by setting the value back to 0 Testing the auxiliary heating power stages 25 Start the circulation pump by setting the value CIRC PUMP to 1 26 Start the first auxiliary heating power stage by setting the value ADD HEAT 1 to 1 27 Check that the auxiliary heating power stage works by leav ing the menu MANUAL TEST and going into the menu INFORMATION gt TEMPERATURE gt SUPPLY and check that the temperature rises 28 Return to the menu MANUAL TEST and stop ADD HEAT 1 by setting the value to 0 29 Repeat steps 26 to 28 for ADD HEAT 2 and ADD HEAT 3 30 Stop the circulation pump by setting
108. three sec onds Changing the number of auxiliary heat ing power stages NOTE Setting the maximum permitted number of power stages for the auxiliary heating must be carried out 3 Change the number of auxiliary heating power stages in the control computer menu SERVICE gt ADD HEAT gt MAXSTEP select the number of stages and 6 6 A For correct connection between the heat pump and the outdoor unit 6 connections must be made For more information about connection see separate sheet with electrical instructions Connecting the outdoor unit NOTE The power cable may only be connected to the termi nal block intended for this purpose No other terminal blocks may be used fan high speed fan low speed fan motor protection cut out Figure 30 Connecting the outdoor unit 1 Route the power cable through the opening in the top panel of the heat pump to the terminal blocks 2 Connect the power cable to the terminal block 6 7 Connecting the defroster sensor CR lS 387 Figure 31 Connecting the defroster sensor Position the defroster sensor on the reverse of the outdoor unit 1 Route the defroster sensor connection cable through the cable bushing in the top panel to the terminal block 2 Connect the sensor to the terminal blocks according to the con nection diagram 6 8 Connecting the exchange valve 2 Figure 32 Connecting the exchange valve 1 Route the exchange valve s conn
109. ting system at an outdoor temperature of 0 C Supply temperature Maximum supply tem perature Value for CURVE is 40 _ _ O 2 O Cc Outdoor temperature No at zero degrees Figure 46 Graph showing the set value 40 for CURVE NO EJ At outdoor temperatures colder than 0 C supply water hotter than 40 C is sent out to the heating system and at outdoor temperatures greater than 0 C supply water cooler than 40 C is sent out Supply temperature Maximum supply tem perature 2 QO O a O a C Outdoor temperature Figure 47 Increasing or reducing the CURVE changes the slope of the curve If you increase the CURVE value the heat curve will become steeper and when you reduce it it will become flatter The most energy efficient and cost effective setting is achieved by changing the CURVE value to adjust the temperature in the house to an even and constant temperature For a temporary increase or reduction adjust the ROOM value instead 26 VMBME102 ROOM If you wish to increase or reduce the indoor temperature change the ROOM value The difference between changing the ROOM value and the CURVE value is that the system s heat curve does not become steeper or flatter if the ROOM value is changed which the curve becomes if the CURVE value changes instead the entire heat curve is moved by 3 C for every degree change of the ROOM value The reason that the curve is adjusted 3 is that an approximate 3 inc
110. tly connected Check that the flow switch is set for the cor rect working range according to the flow switch instructions If the exchanger is blocked clean or replace it Problem Operating pressure switch open alternatively high hot gas temperature indicated in the display s lower left hand corner 1 The operating pressure switch does not close again 2 Sensor fault shows gt 120 C 3 Hot gas temperature too high 4 Overheating too high 1 Switch off the main switch for the heat pump wait until the compressor has been stationary for at least 15 minutes 2 Disconnect the two cables on the pres sure switch using a buzzer check if the pressure switch is closed Check what the sensor shows is it a plausi ble actual value Measure the resistance of the sensor check against the ohm table in the Measurement points section Check the set value on DELIVERY PIPE in the heat pump s control computer factory set ting 120 C Using manometer apparatus and thermom eter check what the overheating reading of the unit is Also check that bulb and capillary tube are undamaged and that the bulb is correctly installed VMBME102 If the pressure switch is closed bridge the pressure switch cables temporarily and switch on the current to the heat pump again If there is an indication in the dis play this means that the pressure switch is fault free and the problem is in the wiring or i
111. transfer fluid circuit is the circuit that contains the water that transports the heat energy to the heating system and the water heater Refrigerant circuit is the circuit that contains a chlorine and freon free refrigerant which inside the heat pump Compressor transfers the energy retrieved from the brine circuit through evaporation compression and condensation and pressure gne Mana ci supplies it to the heat transfer fluid circuit increasing Brine circuit is the circuit that contains an antifreeze water based mix that obtains and transports energy from the heat source to the heat pump This circuit is also known as the collector Enclosed refrigerant Rock ground ground water or air Figure 43 Function principles of a heat pump 1 A hose filled with fluid brine is routed to a heat source The brine obtains energy from the heat source by the fluid temperature in the hose being heated a few degrees by the surrounding heat source The fluid filled hose is also known as a collector 2 The brine is routed into the first of the heat pump s heat exchangers evaporator The enclosed refrigerant in the refrigerant circuit is forced to boil as the pressure in the expansion valve drops and later evaporates to a gas in the evaporator The energy produced during this process is released by the slightly heated brine 3 The refrigerant that now contains a large quantity of energy in the form of heat is transferred to the co
112. ure equipment the heating system can be adjusted according to the system solution for large pressure drop If cooling is not at the correct level compared with the specific refrigerant and is too high there is too much refrigerant Follow the cor rect procedure depending on type of refrig erant to add the correct amount of refrigerant If there appears to be a leak in the refrigerant circuit carry out leak tracing and any neces sary corrective action If the condenser is thought to be blocked try flushing it If this does not work it must be replaced If the condenser is thought to be blocked by oil for example try blowing nitrogen through it to release the oil If this does not work it must be replaced Problem Alarm MS motor protection 1 Phase drop or blown fuse Check that all phases are present on the If any of the phases are not present check terminal block for incoming supply If not backwards towards the building s main check the fuses in the cabinet electrical cabinet If there are no phases Also check that all wiring is secure if screw there contact the network supplier terminals are used they must be properly tightened if phoenix flat spring terminals are used the cables must be secure in the correct hole with load on the cable 2 Defective soft starter Measurement check and establish that If the soft starter does not release the phas when the control computer gives a signal es when it receiv
113. ure sensor A NOTE The room temperature sensor is connected to a safety extra low voltage 1 Install the room temperature sensor somewhere in the house where the room temperature is relatively constant not in a hall way kitchen or a room with alternative heating 2 Hang a thermometer next to the room temperature sensor in order to calibrate it after connecting it _ 4 ie ee ee ee 2 Figure 37 Connecting the room temperature sensor 3 Connect the room temperature sensor to terminal blocks 303 and 304 4 After connecting the room temperature sensor it is calibrated by holding in all buttons for 15 seconds and then setting the actual room temperature that the thermometer shows u on If the display shows no outdoor temperature has been read 8 2 EVU function The EVU function prevents the operation of HEATPUMP ADD HEAT and CIRC PUMP as long as the contact is closed The text EVU STOP is shown in the display when this function is active go Figure 38 Connection diagram for the EVU function e Function EVU is activated by making a connection between ter minal blocks 307 and 308 using an external 1 pin timer 8 3 Tariff control The room temperature lowering function provides a regular tem porary lowering of the indoor temperature 10 kohm 1 me Eo Figure 39 Connection diagram for the tariff control function e The tariff control is activated by making a connecti
114. water production LOWPRESS ERROR Tripped low pressure switch Compressor stopped No hot water production MOTOR P ERROR Deployed motor protection Over current relay compressor Compressor stopped No hot water production BRINE OUT Brine supply does not exceed set temperature Compressor stopped No hot water production Not normally activated BRINEFLOW LOW Flow sensor not active during last start Compressor stopped No hot water production ADD HEAT Overheating protection deployed No auxiliary heating active SENSOR OUTDOOR Fault in outside sensor Zero degrees used for calculations SENSOR FRONT Incorrect supply pipe sensor Everything stops except circulation pump SENSOR RETURN Return sensor fault Return temperature Supply pipe 5 is used Calculated supply temperature limited to maximum 45 C SENSOR HOT WATER Fault on sensor for start temperature No hot water production SENSOR DEFROST Defrost sensor fault Heat and hot water production is controlled from the outdoor sensor s value instead MS FAN Deployed motor protection for outdoor unit fan Compressor stopped No hot water production SENSOR COOLING Sensor fault Cooling function stops 14 2 Measurement points Conversion table for sensors NOTE When reading the resistance of the sensors the sensor leads must first be disconnected from the control equipment
115. xisting expansion tank for a closed pressure expansion vessel with a greater volume To prevent the expansion tank retracting inwards a vacuum valve can be installed in the system Flexible hoses must be installed according Install flexible hoses according to the to the instructions instructions Flexible hoses must be installed according Install flexible hoses according to the to the instructions instructions If something seems to be incorrect accord ing to the troubleshooting window carry out corrective actions A surge tank can be installed on the supply pipe to mix the hot water with the existing slightly cooler water before it goes out to the radiators Try lubricating lead ins in walls ceilings and floors with silicone spray If the incorrect type of valve is used to choke the flow replace with the correct type If the heating system is not correctly adjust ed make adjustments Can the heating system be run at a lower flow 1 Check that there is 400 V between incom ing phases on the heat pump 1 Phase drop The compressor attempts to start or oper ates on two phases 2 Touching pipes vibrations 2 If there is supply to the heat pump meas ure the voltage for all electrical components all the way to the compressor see wiring diagram Establish which pipe s is are causing the problem VMBME102 Check where the phase drop is and rectify Try to release any tensions that
116. y heater engages automatically 11 6 Auxiliary heater 230V The auxiliary heater is made up of an electric heating element on the supply pipe that has two outputs ADD HEAT 1 and ADD HEAT 2 and can be controlled in three steps Step 1 ADD HEAT 1 1 5 kw Step 2 ADD HEAT 2 3 kW Step 3 ADD HEAT 1 ADD HEAT 2 4 5 kW In the event of an alarm the auxiliary heater engages automatically VMBME102 25 11 7 Important parameters Heat production calculating The indoor temperature is adjusted by changing the heat pump s heat curve which is the control computer s tool for calculating what the supply temperature should be for water that is sent out in the heating system The heat curve calculates the supply temperature depend ing on the outdoor temperature The lower the outdoor temperature the higher the supply temperature In other words the supply tem perature of the water fed to the heating system will increase exponentially as the outside air temperature falls The heat curve will be adjusted in connection with installation It must be adapted later on however to obtain a pleasant indoor tempera ture in any weather conditions A correctly set heat curve reduces maintenance and saves energy CURVE The control computer shows the value for CURVE by means of a graph in the display You can set the heat curve by adjusting the CURVE value The CURVE value indicates the supply temperature of the water to be sent out to the hea
117. y valve has jammed in hot water 1 Check the function of the 3 way valve 1 ls the motor being supplied with voltage mode motor by test running it manually If the according to the wiring diagram in both motor does not shift mode during manual operating instances test operation check that there is voltage to MANUAL TEST VXV HOT WATER the motor see wiring diagram 0 Radiator mode arm out from valve 1 Hot water mode arm positioned towards the valve If there is voltage to the motor but the arm does not shift mode replace it 2 Detach the motor and test closing and opening of the valve by pressing the control arm 2 Take out and clean the jammed insert or replace with a new insert 5 Defective electric heating element Use a buzzer and check if all coils in the elec If the electric heating element is defective tric heating element are intact replace it 6 The heat pump has stopped on HIGH e Check what the MAX RETURN value is set at If the MAX RETURN value is not adjusted for RETURN in the heat pump s control computer It must the system according to the troubleshooting be adjusted to the unit s maximum supply window adjust it temperature and the system s delta tem perature so that it does not cut at too high a return temperature when the highest supply temperature is transmitted If the sensor is defective replace it e Check what the return pipe sensor shows is it a plausible actual value If not tak

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