Montagevejledning VPM 120 - 360
Contents
1. Fire hazard in event of spill Corrosion risk Increased pump energy consumption Table 4 Advantage and disadvantages with selection of various refrigerants The antifreeze must not be mixed beyond what is specified above as this makes determination of the water s freezing point more difficult It is important not to overdose addition of antifreeze as this results in changes in thermodynamic properties of water and resulting reduction in heat transfer ability Anticorrosives may be used in the proportions indicated below Right to make changes is reserved NILAN A S Page 28 of 32 Installation Guide NILAN JVP Version 1 08 Antifreeze Corrosion reducing substance Concentration of weight Ethylene glycol Sodium nitrite 0 4 Sodium benzoate 4 Borax 4 Benzotriazole 0 2 Propylene glycol Sodium nitrite 0 4 Sodium benzoate 4 Borax 4 Benzotriazole 0 2 Sodium chloride Sodium carbonate Calcium chloride Magnesium Sodium hydroxide chloride Table 5 Refrigerant water proportions Source Order no 1203 of 20 November 2006 The quantity of brine depends on the pipe length The table below can be used to calculate fill quantity per pipe type depending on internal pipe diameter and antifreeze concentration Tube type Quantity Tube length Internal Antifreeze Antifreeze per tube per piece diameter concentration Pieces m mm vol I Symbol a l d Vf 3 142. eeeeeeeereeeeeeeeee 26 Summary of Tables Tablet Alar Stinen e a aaa a iea eaaet 22 Table 2 Manifold GNIS EE 27 Table 3 Freezing point of brine water antifreeZe EEN 28 Table 4 Advantage and disadvantages with selection of various reirigerante 28 Table 5 Refrigerant water Proportions cccccceeeeeeeeeeeeeneeeeeeeeeeeeeeecaeeeeeeeeeeeeeceaaaeeeeeeeeeeeeeeaaees 29 Table 6 Calculation table for fill quantity of antifreeze 0 eect eee e rete eeeetaaeeeeeeeeeeeeeeeaaaees 29 Installation Guide NILAN JVP Version 1 08 General information before installation Installation Guide this document Electrical diagram Warranty documents d Check that the following documents have been supplied with the system We have tried to make the language in the Installation Guide as clear and unambiguous as possible Should problems arise however in connection with the installation you are naturally very welcome to contact us NILAN A S NILANVEJ 2 DK 8722 HEDENSTED amp 45 76 75 25 00 Control of the system is done with a NILAN LMC220 controller which offers a wide range of functions for example menu driven control summer winter operation outside compensated control etc Right to make changes is reserved NILAN A S Page 4 of 32 Installation Guide NILAN JVP Version 1 08 Safety Always disconnect the electrical supply to the heat pump if any malfunction occurs that cannot be remedied via the control pan
3. 50 FREEZE W Circulation pump are Temperature for domestic water central heating or started room sensor has been below 2 C for more than 2 hours The freeze protection function is active 53 LEAKAGE W Supplementary heating Earth tube environmental pressure switch takes over after 5 minutes Check system for leaks 54 OVERHEAT C STOP Return or domestic water overheated to 90 C or more Check relays and contacts to compressor and supplementary heating 70 LEGIO The Legionella function has not been able to be performed within the time deadline for two successive weeks Energy supply is lacking from brine or supplementary loop Table 1 Alarm list Right to make changes is reserved NILAN A S Page 22 of 32 Installation Guide NILAN JVP Version 1 08 The Service menu The Service menu is only accessible via keying of a code and should only be performed by a VPO service technician Right to make changes is reserved NILAN A S Page 23 of 32 Version 1 08 Installation Guide NILAN JVP Installation Bugeoy page Gp LO ege enwodwg up wasis Bugeey sanos punois A 07 peu Cola gp osues ag z1 pes enyeedus Gp nans LUCY ees aIMQeladue pr WE Oe E eq xad Zp SHOW HOT Le sqn yeg poo aplld A1 1 JAUEN Or BEA BOWS GE AE P HID EC BABA BOWS JE Daunmeiteg vn dund grat oo op OWNS HE GV AE Vote ZE LL pue anedya JE EAGT pp AAS E DE Wan geL GZ ITE pesa
4. Guide NILAN JVP Version 1 08 It is important that the water pressure is correct as the circulation pump will be damaged if the heat pump is started with insufficient water pressure Water might have to be added a couple of times the first year in connection with ventilation of the heat source Topping up water on the heat source The brine the fluid in the heat source consists of water mixed with antifreeze so that the brine can become colder than 0 C without freezing solid The heat pump is equipped with a low pressure switch which ensures that the brine never becomes so cold that it freezes solid and thus the heat source s heat exchanger is protected against frost damage The frost protection is geared to the temperatures in the heat source It is very important to get the antifreeze and water thoroughly mixed when brine is to be added to the heat source as no mixing occurs in the earth tubes The heat pump risks freezing with consequent frost damage if it runs with water without antifreeze mixed in Filling of brine should be done by an authorised VPO technician Topping up brine on the heat source is done this way e The heat pump and the circulation pump are switched off at the main switch before water is being added to the system e Water is added to the heat source via filler cock see page 13 Figure 5 until the water pressure is correct Heat source and heat pump are ventilated via automatic vents Top up brine on the
5. displays the last 16 active alarms LOG Does NOT reset in event of power outage AL 0 13 Most recent active alarm T2 SHORT AL 1 20 Next most recent active alarm PRESSURE Service menu is activated with key combination SERVICE Service menu for set up test and troubleshooting 4 LMC220 Apparatus type identification and software version s number VER 1 03 RESTART Seconds until release of compressor restart CP 914s Can be reset for purposes of service MANUALY Manual activation of outlet relay ACTIVATE Activation of manual operation NO NO YES COMPRESS Start compressor OFF OFF ON SUPPLEM Start supplementary heating OFF OFF ON 3 WAY Activate 3 way valve for domestic water OFF OFF ON BRINEPMP Start earth tube brine pump OFF OFF ON CIRCPUMP Start central heating circulation pump OFF OFF ON OPERTIME Operating hours counter 4 HEATPMP Indicates how long the heat pump has been switched on 8206h COMPRESS Compressor Right to make changes is reserved NILAN A S Page 15 of 32 Installation Guide NILAN JVP Version 1 08 2184h SUPPLEM 514h Supplementary heating 3 WAY 964h 3 way valve for domestic water BRINEPMP 4740h Earth tube brine pump CIRCPMP 2948h Central heating circulation pump SETUP GUIDE Menu which leads the user through the selections that ar
6. gt NILAN outstanding indoor climate Installation and User Guide for NILAN JVP2 Ground Source Heat Pump Nilan A S Version 1 08 22 09 2010 Nilanvej 2 DK 8722 Hedensted Tel 45 76 75 25 00 Fax 45 76 75 25 25 CVR NR 11 77 33 97 OG BOLIGVENTILATION MED VARMEGENVINDING www nilan dk MARKEDSFO RENDE ERHVERVS Table of Contents Table f Eeer 2 Summary EE 3 Summary of Eegenheeten Ehe 3 General information before installation ke 4 SE E EE A ge tek E sia Gueie mend es ee Geib ene ayaa ean enna reee es 5 lee EE 6 Operation and MAINTENANCE ANEN 7 Starting the heat UTP DE 7 Water pressure on central heating system EEN 9 Filling up central heating system With waer 9 Ela EE 9 Water pressure on heat source earth bel 9 Topping up water on the heat source 10 Cleaning of fluid in heat source AEN 10 e EE 11 Selection of git E 11 GENIE OI nvsceiviccanadsicveteceimeanesyieenet core egene et ees 11 Setting ST 11 nie E 12 BASIN SUMAN oi4rai oc iareetete Siociesenn cree Rieter ieee tiers aortas 13 Operating status WSN ye acter carci cee eee ee a ce Ree 13 Operating Run En TE 13 Main IIT EE 13 Function description EE 17 Heat pump S COMpreSSor E 17 Earth tube and Drie eege 17 Condenser and warm circulation PUMP sssgeniciescscesseseecacierccnseecnderacneaxeiavenesadbinaancevadeeeadeencenervaies 17 Supplementary NEAULNG iiec spie ei en EEE Ea En EREN EEA EEEN EEEE PEENE EE EEEa NEN EREE 17 ERT Le EE 18 Curve manag
7. is reserved NILAN A S Page 5 of 32 Installation Guide NILAN JVP Version 1 08 System design Electrical installation power supply including safety cut offs must be installed by an d authorised electrician The system is connected according to the supplied electrical diagram Figure 1 System design Function of ground source heat system The ground source heat system is used for heating of central heating water or for floor heating System components function The ground source heat system obtains heat from the ground through the earth tube system 3 The ground stores heat which it accumulates from the sun in the summer and releases the heat to the earth tube system 3 in the winter The temperature of the water antifreeze mixture brine out of the earth tube system 1 is 0 10 C In order to utilise the energy in the brine a heat pump is used which transports heat energy from a low temperature in the brine medium to a higher temperature in the central hot water The warm central heating water is accumulated in a buffer tank 11 that stores heat in the event of large fluctuations in heat consumption Circulation pumps 8 see to the fluid transport in both the earth tube system and the central heating floor heating system 10 The heat pump consists of an evaporator 4 compressor 5 condenser 6 and an expansion valve 7 that is combined with a refrigerant in a so called closed cycle in a closed system The brine from
8. the earth tube 1 exchanges with the refrigerant in the evaporator by which the refrigerant is heated After the evaporator the refrigerant is compressed in the compressor and the temperature and pressure of the refrigerant are increased Upon exchanging in the condenser the refrigerant then releases heat energy to the central heating water and the temperature of the central heating water rises After the condenser the refrigerant pressure is reduced in an expansion valve and the refrigerant continues into the evaporator where it cools the brine before the flow for the earth tube system 2 A supplementary heating element is installed in the buffer tank 9 which can supplement the ground source heating system in the event of particularly high heating demand Right to make changes is reserved NILAN A S Page 6 of 32 Installation Guide NILAN JVP Version 1 08 Operation and maintenance During set up future service and maintenance should be taken into account A minimum clearance in front of the system of at least 1mis recommended Starting the heat pump Before starting the heat pump check the following e The pressure in the central heating system see 40 Figure 5 The pressure in earth tubes see 21 Figure 5 That both the central heating system and the heating source are ventilated as described on page 9 The heat pump can then be switched on at the safety switch The heat pump is stopped by the safety switch Right to make c
9. wind effect and sunshine can affect the heating demand significantly Room temperature compensation provides an opportunity for ensuring the maintenance of the room temperature in a selected representative room where the best possible comfort is desired The room temperature compensation functions by increasing the return temperature if the room temperature in the representative room cannot be maintained The room temperature compensation has 2 settings partly the temperature that is desired in the room partly the maximum number of degrees the return temperature may be increased in order to maintain the desired room temperature Typical values are 20 C for room temperature and 10 C for maximum increase of return temperature The room temperature compensation can only increase the return temperature according to the return temperature provided by the outside temperature compensation It is therefore important that the outside temperature compensation is set at minimum values for return temperature Frost protection In order to prevent possible freezing damage a number of preventive functions are built into the system which will always be active regardless of which operating modes and settings may be selected including OFF Any missing or defective temperature sensors or other system components will naturally be able to damage this protection If the outside temperature falls below 2 C the central heating s circulation pump is started Wi
10. JVP Version 1 08 e The system can be recommended for approval if it can maintain the test pressure for 1 hour Right to make changes is reserved NILAN A S Page 30 of 32 Installation Guide NILAN JVP Version 1 08 Filling of brine After a completed and demonstrated tightness test the system can be filled with brine Filling of brine should be done by an authorised VPO technician Brine can be purchased ready mixed with corrosion inhibitors used also as coolant for vehicles or can be mixed immediately before filling In the case of ready mixed brine safety data sheets are enclosed which document the composition of the brine Brine and water must be mixed thoroughly before filling a Palletank can be used for this for example The water should be free of corrosive substances use distilled water perhaps Use a powerful pump to empty the earth tubes of air pockets before filling with brine Calculate the pumping time for filling the system at an established pumping stage it shall take the calculated pumping time to fill the system with brine Be careful that air does not enter the earth tubes during filling Safety The ground source heating pipes are equipped with a low pressure switch which gives an alarm in the event of falling pressure in the earth tube In the event of an alarm the system must be disconnected and must not be able to start automatically again The earth tube system must be dimensioned as a closed system with a rest
11. a d 2 d 2 c 100000 Earth tube Earth tube Main line Main line Main line In all the sum of Vf for all pipes Table 6 Calculation table for fill quantity of antifreeze PEL 40x4PN6 3 has for example an inside pipe diameter of 40 4 4 32 mm and fill quantity of 1 244 m l or 0 8038 Um Water quantity Vv for the measured out quantity of antifreeze Vf in the concentration c is Vv Vf c 100 Vf REMEMBER The warranty does not cover freeze damage in heat exchanger heat pump if water brine inside has not been freeze protected to the low pressure switch s setting 20 C Tightness testing It is important to pressure test the pipes for tightness individually immediately before covering with earth as during handling transport cracks can arise in the pipes The earth tubes heat source must be tested for tightness in accordance with applicable legal provisions The Danish Ministry of the Environment s Order no 522 of 2 December 1980 days before testing Report the pressure testing to the municipal council no later than 3 Fill the heat source with tap water and vent thoroughly Fill with water until the test pressure is 1 5 times the differential pressure but a minimum 400kPa 4bar Top up with water every three months until the pressure does not fall below the test pressure level for three months Right to make changes is reserved NILAN A S Page 29 of 32 Installation Guide NILAN
12. a manifold in the inspection well see Figure 6 Alternatively earth tubes can be collected within the house footing on condition that the pipes are isolated see Figure 7 All connections must be resistant to tension and done with access for inspection inside or outside the building Pipe connections that are performed in connection with repairs must be resistant to tension connections for PN6 pipe that have been approved pursuant to the Danish Code of Practice for Domestic Water Supply Installations Connections must be marked on the line diagram All loops must have the same length 5 The combined length of the earth tube pipe must be as a starting point 35 40metres of earth tube per kW of dimensioned heat loss in the house at 12 C outside temperature The tube length per loop should be greater than 100 metres or less than 150 metres The tube length MUST always be dimensioned for the system but generally one can say that it is always better to have a tube slightly too long than one that is too short A tube that is too short will chill the ground too much and the efficiency will decrease on the system A tube that is too long for each 180 hose turn will mean that the circulation pump must work too much and the efficiency will decrease on the system A tube that is slightly too long will ensure that the flow temperature into the heat pump will never go below zero degrees and the efficiency COP on the system will remain at a satisfactory le
13. abled Check connection Switch any sensor needed 13 T2 SHORT C STOP Domestic water temperature sensor short circuited Check connection Switch any sensor needed 14 T3 DISABL W 7 is presumed Outside temperature sensor disabled Check connection Switch any sensor needed 15 T3 SHORT W 7 is presumed Outside temperature sensor short circuited Check connection Switch any sensor needed 16 T4 DISABL W Deactivate room control Room temperature sensor disabled Check connection Switch any sensor needed 17 T4 SHORT W Deactivate room control Room temperature sensor short circuited Check connection Switch any sensor needed 32 LOWPRESS Stop compressor Low pressure alarm The heat pump will start supplementary heating is automatically 2 minutes after the alarm has taking over heating disappeared 33 HIGHPRES Stop compressor High pressure alarm The heat pump will start S supplementary heating is automatically 2 minutes after the alarm has taking over heating disappeared See also Alarm 34 34 HIGHPRES Stop compressor After 3 high pressure alarms 33 within 12 hours S supplementary heating is Alarm34 will come Alarm 34 has a manual reset taking over heating and must be acknowledged from the Alarm menu in order to start the compressor again 34 COMPRESS W Supplementary heating Safety shut off from compressor high pressure and takes over after 5 minutes low pressure Compressor restarts when user acknowledges the alarm
14. al council shall be applied to for authorisation for establishing a ground source heat system Approval of system shall occur before the construction work is begun It is the municipality which determines the requirements for the ground source heat system Authorisation will not be granted for establishing a ground source heat system closer than 300 metres from a public water extraction installation and 50 metres from other water extraction installations The separation requirements can be reduced if the hydrogeological conditions make it likely that there is no increased risk for contamination of the groundwater Area requirements Earth tube lines that are placed less than 1 5 metres from the building s footing and less than 1 5 metres from waterlines and sewer pipes must be isolated with impervious insulation Earth tube lines must be placed a minimum of 0 6 metres from neighbouring boundary lines min 0 4 m z CS ics min min pim yim l min 0 6 m EE Figure 6 Example of layout of earth tubes in collector Right to make changes is reserved NILAN A S Page 25 of 32 Installation Guide NILAN JVP Version 1 08 Y al mn Am 4 mg T L Figure 7 Example of layout of earth tubes with collection inside footing Earth tube pipe is laid out in loops that are collected in
15. as few start ups as possible Right to make changes is reserved NILAN A S Page 32 of 32
16. ating functions are active SUMMER Normal condition is domestic water central heating is not active WINTER Normal condition is central heating which is switched to domestic water as needed AUTO The system selects on its own operating mode on the basis of average of outside temperature the set summer temperature and a neutral zone of 4 C Winter After 24 hours under summer temperature minus neutral zone Summer After 24 hours above summer temperature Main menus HEATING Readout of current operation status text STATUS This is the main screen image OPERATE The apparatus s main switches and selection of overriding operating mode AUTO OFF SUMMER WINTER AUTO HOT Setting of set point for hot water production 5 60 See Menu only visible if hot water production selected 45 C OUTSIDE Setting for displacement of outside curve 9 9 CURVE Menu only visible if outside compensation selected 0 C T ROOM Set point for activation of central heating room compensation 5 30 SET Menu only visible if room compensation selected 20 C READOUT Sub menu for display of current sensor and control data 4 T WATER Domestic water maintains temperature 45 C T Central heating temperature OPERATE CURRENT Right to make changes is reserved NILAN A S Page 13 of 32 Installation Guide NILAN JVP Version 1 08 32 C T Current set point for central heating temperature OPERATE Calculated from the sele
17. cted temperature compensation functions SET 52 C T Outside temperature OUTSIDE 12 C T ROOM Room temperature 20 C ADJUST 4 HEAT PUMP SUPPLEM Supplementary heating release for operation for both domestic water and central heating OFF OFF ON DELAY Delayed connection of supplementary heating gives heat pump a better SUP chance to meet demand Om 0 60 RESTART Compressor restart time for ensuring against unnecessary wear between two CP 20m starts one following on the other 2 60 minutes COMPRES Maximum return temperature for allowing compressor operation stop at this S on grounds of condenser pressure MAX 40 80 60 C T Switching point for the automatic summer winter operation switch see page SUMMER 17 Condenser and warm circulation pump 7 0 30 15 C DOMESTIC WATERY HEAT Heat source selection for domestic water production HP SUPP OFF HP SUPPLEM HP SUPPL L MINIMUM Temperature set point for supplementary heating if released and selected 5 80 35 C SET Temperature set point for heat pump compressor POINT 5 60 45 C T DIFF Temperature difference for connecting Heating starts at entered set point minus this value 3 C 1 9 LEGIO Legionella function s frequency supplementary heating must be released for DAYS operation OFF OFF 7 30 days CENTRAL HEATLY HEAT Heat source selection for space heating HP SUPP OFF HP SUPPLEM HP SUPPL L T Minimum allowed set point for the house s return feed tem
18. e to be made in setting up the system LANGUAG DANISH Section of user interface language ENGLISH DANISH Right to make changes is reserved NILAN A S Page 16 of 32 Installation Guide NILAN JVP Version 1 08 Function description Heat pump s compressor The compressor s capacity is adjusted by connecting and disconnecting the compressor in so called modulated on off operation The system is protected with high and low pressure switches that can stop the compressor and issue an alarm In the event of heating demand the heat pump s compressor is started When the compressor is operating the central heating temperature is raised to the respective set point before it is shut off This occurs independently of the neutral zone to avoid unnecessary start stop Earth tube and brine The brine pump always runs together with the compressor and starts 1 minute before and runs 1 minute longer After a week of inactivity the pump is started briefly to prevent blockage An environmental pressure switch is connected that gives an alarm and stops the system if the brine system is leaking Condenser and warm circulation pump The system has a water cooled condenser with an associated circulation pump Excessive condenser pressure in the event of failure of the high pressure switch is prevented by circulating hot water in the central heating system until the temperature is below the set maximum value for t
19. el If any malfunction arises on the electrical part of the heat pump a licensed electrician must always be contacted to repair the malfunction Avoid direct contact with the pipes in the heating system in the heat pump as they can be very hot Many types of antifreeze are injurious to health dangerous when ignited and must be kept away from children To protect the heat pump from damage it is supplied with the following safety equipment Expansion system for central heating and heat source Safety valves for central heating and brine earth circulation system Low and high pressure cut off switches for compressor Brine pressure cut off switch legally mandatory environmental pressure switch e Minimum freezing thermostat cuts off the heat pump if the temperature becomes too low in the brine circulation system The heat pump must be subjected to a service inspection at least every 12 months according to the Danish Ministry of Employment and Social Affairs Order No 539 15 In connection with the service inspection all safety automation must be tested for function The responsibility for maintenance of the heat pump rests with the owner or user The heat source contains anti freeze which can harm groundwater if spilled or leaked Immediately contact an authorised VPO Danish Heat Pump Industry Quality Assurance Scheme service technician if leaks are suspected in your ground source heat system Right to make changes
20. ely being installed on the manifold Dirt which collects in the pipe can result in clogging of filters pumps and exchangers The manifold can be done in PVC fittings according to the parts list below When using PVC fittings for the manifold the collector must be isolated so that ice does not form on the exterior of the manifold Ice formation can result in freeze damage to the PVC material Pieces by number of pipe layers Producer product Producer PVC fittings no name 1 2 3 Ballcock 11 2 10502391 Plast line A S 2 4 6 Transition compression fitting 940x112 13010170 Plast line A S 2 2 2 T piece 11 2 10500385 Plast line A S 2 2 2 90 angle 11 2 10500195 Plast line A S 2 4 6 Pipe PVC11 2 for joining 10507100 Plast line A S 1m 1m 1m Transition compression fitting 50x1 v2 13010175 Plast line A S 2 2 2 End sleeve 11 2 with venting valve Schrader 10501396 Plast line A S 2 2 2 Table 2 Manifold parts list The manifold can also be done in steel fittings Right to make changes is reserved NILAN A S Page 27 of 32 Installation Guide NILAN JVP Version 1 08 Fill medium brine The water in the earth tubes heat source must be protected against freezing so that the heat pump s evaporators do not burst if the brine freezes to ice The minimum sensor stops the compressor at the set value The low pressure switch stops the heat pump if the brine becomes colder than the s
21. ement via Outside Temperature 18 Room temperature compensation E 19 EECHER 19 EES EE 20 High pressute alat EE 20 Low pressure malfunction eessen ee Eege eege ege 20 A E 21 The Service IG ses cericte cere exnsntoncrcemintaelen ar etnmiskernc emia Rieternuser bie enter eneiatiemuneediatie 23 istallato a er eee eer ere 24 Electrical GONMEGCHON sentesinxavessevGeners eenarersaniesdosmnbeesteejoutesinens EA 25 Pipe CONMSCHONS EE 25 Floor heating Re EE 25 EECH routing eee nena et reer ere ee cere ree ee Sener ee ee eee 25 Area requirements eeesengteret tseerenergehteeE ee Eeer Eer 25 Installation and removal eeemernree eters eee eee eran tone meee oe eee ee ee 31 Energy conservation tips for OD Grab ON wssiccstccseessavssectaterunncs exsamteiererweaceiunelsiureteruaeeaseiatenuneenenuesianas 32 Summary of Figures Figure 1 System design Bremeeem seen re ert orem ser air eegene 6 Figure 2 Ground source heat system without front Panel ccecceeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeteeeeeaaees 8 Figure 3 Nilan LMC220 Control panel suiciscciseatsnvssecterecieetsmcsareconeneneiurarunedehovererusweasasassbuneceneruneianas 11 Figure 4 Curve selection for outside temperature compensation sssssserseessssrererrrrersserrrrrrree 18 Figure 5 Schematic for ground source heat pump system design 24 Figure 6 Example of layout of earth tubes in Collector 25 Figure 7 Example of layout of earth tubes with collection inside footing
22. en water is added to the system e Water is added to the system until the water pressure is correct If the water pressure disappears entirely during the filling the filling must be restarted completely from the start e The heat pump is started again by switching on the main switch Dirt filter Immediately after the heat pump is connected there may be some dirt in the central heating system The dirt filter is installed on the central heating line and the earth tube line on the outside of the heat pump as shown on Figure 5 The filter must be checked and cleaned several times daily right after the installation of the heat pump until the filter remains clean It is sufficient in normal operation of the heat pump to check the filter twice annually Cleaning of the dirt filter The heat pump is switched off at the main switch The shut off valves on each side of the filter are closed The filter is pulled out and rinsed clean The filter is put in place and the shut off valves are opened before the heat pump is switched on at the main switch Water pressure on heat source earth tube The water pressure must be checked carefully the first few days up to several times daily and if necessary topped up with water to the system see page 5 Figure 2 The water pressure will be stabilised after a few days and the inspection can then be reduced to once a month Right to make changes is reserved NILAN A S Page 9 of 32 Installation
23. ermined temperature is maintained on the house s return The necessary temperature on the return depends on the house s heating demand which depends on size insulation and outside temperature Several different modes for temperature compensation can be selected which can each be active simultaneously Curve management via outside temperature It is possible to pre program the set point for the house s return depending on the outside temperature The desired return temperature is set for outside temperatures at 20 C 10 C 0 C 10 C and 20 C On the basis of these temperatures return temperatures are calculated for the current outside temperature with the help of interpolation between the given points in Figure 4 For outside temperatures under 20 C and over 20 C the programmed return temperature is used for 20 C and 20 C respectively You can select 10 pre programmed curves or a self defined one 50 Curve 45 Curve2 A0 e Curve4 e Curve5 SR EE a 35 o Curve6 3 ap SS Curve7 z Curve8 R Curve9 S Curve10 20 SER D o S 15 D 10 5 0 20 10 0 10 20 Outside temperature Figure 4 Curve selection for outside temperature compensation Right to make changes is reserved NILAN A S Page 18 of 32 Installation Guide NILAN JVP Version 1 08 Room temperature compensation Compensation of the return temperature according to outside temperature is not available as
24. et value Frost protection can be adapted to the earth tubes heat source s operating conditions Water is used as the transfer medium in the earth tubes with antifreeze added brine The antifreeze can be glycols salts or alcohols for example ethylene glycol propylene glycol sodium chloride table salt or mixtures of calcium chloride and magnesium chloride betaine or methylated spirit denatured alcohol The label below shows the freezing point for various brines Antifreeze Percentage 0 10 20 30 40 concentration by weight Ethylene glycol C 0 3 8 14 22 Propylene glycol C 0 3 8 13 21 Methylated spirit C 0 4 15 22 Denatured alcohol Sodium chloride C 0 6 16 Calcium chloride C 0 5 18 46 Magnesium chloride Table 3 Freezing point of brine water antifreeze Source 2005 ASHRAE Handbook of fundamentals Advantage and disadvantages in selection of various types of brine Ethylene glycol Methylated spirit Denatured Calcium chloride alcohol Advantage Advantage Advantage No degreasing effect Non toxic in the environment Disadvantages Disadvantages Disadvantages Not Classified Classified as Class 3 Packing Corrosion risk see Group I Risk for aquatic environment Effective degreasing agent contamination in event ofj Degreasing of bearings in leakage pumps Requires approval by the Danish Central Tax and Customs Administration
25. good security against damage to lawn or plants in the garden resulting from the ground source heating system Bending radius no less than 15 times the pipe s outside diameter or according to the pipe manufacturer s directions When burying at bending it is important to take into account any contraction while cooling The pipes must therefore not be anchored in the ground with stones and the like as this can result in pulling and cracking of the pipes as a result of temperature dependent density changes From the manifold the pipes are run to two main lines through the base of the heat pump Insulation of main lines within the base to avoid condensation Note impervious insulation a minimum of 1 5 metres from base or water bearing system and insulation between pipes if the distance is less than 1 metre Materials The pipes must be approved by Danish Standards and marked with DS2119 Earth tubes are done with PEL polyethylene pipe type PEL 40x4 PN6 3 i e 40 mm external material thickness A mm approved for pressure of 6 3 bar Alternatively PEM 40x2 4 PN6 3 can be selected A smaller thickness provides a better heat transfer and lower pump energy consumption better COP but pressure requirements must be met In addition thinner pipes even if they meet the pressure requirements can be more sensitive to external influences and bending during handling and installation The pipes are supplied with dust caps which must not be removed before immediat
26. hanges is reserved NILAN A S Page 7 of 32 Installation Guide NILAN JVP Version 1 08 Figure 2 Ground source heat system without front panel Figure 2 shows connections on the ground source heat pump central heating inflow 1 brine inflow central heating return 3 brine return 4 earth tube pressure control Right to make changes is reserved NILAN A S Page 8 of 32 Installation Guide NILAN JVP Version 1 08 Water pressure on central heating system The water pressure must be checked carefully the first few days even up to several times daily and if necessary topped up with water to the system see page 40 Figure 5 The water pressure will be stabilised after a few days and the inspection can then be reduced to once a month If water is added to the central heating system beyond the start up phase a check should be done for leaks It is important that the water pressure is correct as the circulation pump will be damaged if the heat pump is started with insufficient water pressure Filling up central heating system with water It is important that the heat pump and the circulation pump are switched off at the main switch while water is being added to the system e Water is added to the central heating system via a filler cock see page 41 Figure 5 until the water pressure is correct see page 40 Figure 5 e There are automatic vents on the heat tank central heating system etc that are activated automatically wh
27. he compressor before the compressor is started After a week of inactivity the circulation pump is started briefly to run it In addition the pump has these operating modes which depend on the overriding control condition Winter operation The pump runs constantly Summer operation The pump is stopped when it is not being run Supplementary heating A 1 5 kW electric water heater is connected as a supplement to the heat pump in those instances where it cannot supply the desired heating for example in cold and blustery weather The supplementary heating must be released for operation by the user The supplementary heating is activated if the return water falls below the minimum value set minus neutral zone In this way it is ensured that the heat pump supplies the greatest share of energy at the same time as the user even during extraordinary demand is ensured a well defined comfort The supplementary heating will also be used as supply security and maintenance of normal comfort in situations where the heat is out of operation because of installation work defects or the like In these instances the compressor s set points are overridden so that the supplementary heating is not controlled here according to minimum values Right to make changes is reserved NILAN A S Page 17 of 32 Installation Guide NILAN JVP Version 1 08 Central heating During regular pump operation the compressor capacity is adjusted so that a predet
28. he low pressure Right to make changes is reserved NILAN A S Page 20 of 32 Installation Guide NILAN JVP Version 1 08 switch operates again after a few minutes There is a danger of freeze damage to the heat pump s evaporator if one tries repeatedly to start the system Leakage The pressure is too low in the earth tubes heat source It might mean that the earth tubes have started to leak Check the following 1 Are all cocks open that should be open 2 Is there enough brine in the system Top off as needed Check 1 2 and correct the error Acknowledge the alarm by pressing on the control knob in the sub menu Alarms when the alarm is displayed Call a service technician if you cannot find the error yourself Right to make changes is reserved NILAN A S Page 21 of 32 Installation Guide NILAN JVP Version 1 08 No Text Type Action Description 5 DATA BASE The control has been reset to the factory setting and requires a renewed default setting This occurs for example if software is updated with a new program that differs significantly from the old Make the desired settings via menu system 10 T1 DISABL C STOP Return temperature sensor disabled Check connection Switch any sensor needed 11 T1 SHORT C STOP Return temperature sensor short circuited Check connection Switch any sensor needed 12 T2DISABL C STOP Domestic water temperature sensor dis
29. heat source until the water pressure is correct H brine must be added to the heat source several times it indicates leakage in the earth tubes Immediately contact an authorised VPO service installer technician if you suspect leakage Cleaning of fluid in heat source There may be dirt in the heat source after installation and the heat source and its fluid must therefore be cleaned before connecting to heat pump Dirt filters should be installed on earth tubes Right to make changes is reserved NILAN A S Page 10 of 32 Installation Guide NILAN JVP Version 1 08 Operation Nilan JVP is equipped with the control panel below Figure 3 Nilan LMC220 Control panel The control panel is used to control the heat pump s operation The control has 2 diodes to the left of the display the upper is illuminated when the heat pump is operating the lower is illuminated when the supplementary heating is operating The backlight in the display blinks if the system has gone into alarm condition Nilan LMC220 control panel is controlled solely via the adjusting knob to the right of the display The adjusting knob has 3 functions Turn clockwise Go to next menu item or increase the last value in the display Turn counter clockwise Go to previous menu item or reduce the last value in the display Press Select sub menu activate adjustment of value or approve the last value The light in the display will be lit when the panel i
30. ing pressure of 150 250 kPa According to guidelines issued by the municipal council owners of ground source heat systems must arrange annually for an inspection by someone competent in ground source heat systems Documentation for the inspection must be kept by the owner of the ground source heat system for at least 10 years and must on request be shown to the municipal council Installation and removal Isolation of pipes All pipes to and from earth tubes heat source must be isolated entirely right in to the heat pump if it is possible so that condensate does form on the cold pipes Base under heat pump It can be advantageous to establish a drain for condensate from the heat pump and water from the safety valve under the heat pump Disposal of the heat pump Contact your municipality or an authorised VPO technician when the heat pump is to be disposed of as the heat pump and brine must be disposed of in accordance with applicable legal provisions Shipping settings Right to make changes is reserved NILAN A S Page 31 of 32 Installation Guide NILAN JVP Version 1 08 Energy conservation tips for operation The flow temperature for floor heating or central heating must be as low as possible Dirt filters must be checked and possibly cleaned as a dirty filter increases the pump energy consumption for circulation of central heating water or brine The ground source heat pump and the heating system should be set so that there are
31. n Loser e AC qN SH JZ LE Wan peL Z 37g essen Loupe egg S yams ans seud Eau pZ ue dand era ez eueajeoueuds zZ ang Z EIFE mp Do OZ AE URW GL HEXAL ooo Buy 11 ANEA JO US gl AE ER MASH om JO IS el Song EL SH EH URZ eu SEI ECH O JIB OL E puny um ep uojpedsuy g anpa uasuedsS g MAE MAZ ON arsso iy ny anen ean 9 ips ansseud Vu 6 Keadupcs paws anssad mo E anssad mol Dap SIAS Z Aed Figure 5 Schematic for ground source heat pump system design Page 24 of 32 NILAN A S Right to make changes is reserved Installation Guide NILAN JVP Version 1 08 Electrical connection The heat pump is connected to electrical installation by an authorised electrician Pipe connections Earth tubes and central heating system are installed on the ground source heat system s rubber tubes that run out through holes in the side panel farthest back on the system A coupling is used with 3 4 and 22mm pipe and a clamp respectively Floor heating loop IMPORTANT An overflow valve must be installed Position 36 in the floor heating loop with a circulation pump with a fixed speed Alternatively individual thermostats are installed so that sufficient flow is ensured Earth tube routing Legislation that concerns ground source heat systems includes Order no 1203 of 20 November 2006 applicable and Order no 522 of 2 December 1980 historical The latter is a good guide to establishing ground source heat systems The municip
32. or is significantly reduced High pressure alarm The refrigerant pressure is too high in the condenser which is due to the fact that the heat pump cannot get rid of the heat it is producing The central heating water is circulating too slowly Possible causes The dirt filter in the central heating system is clogged up There is air in the central heating system vent the system There is insufficient water in the central heating system Hot pump to central heating system is not running The pump will whir a bit while operating ae ee IS Check 1 4 and correct the error Acknowledge the alarm by pressing on the control knob in the sub menu Alarms when the alarm is displayed Low pressure malfunction The refrigerant pressure is too low in the evaporator which is due to the fact that there is not enough heat coming from the heat source Either the brine is circulating too slowly or the brine is too cold when it is returning from the earth tubes Possible causes 1 There is air in the earth tubes vent the heat source earth tubes 2 There is insufficient water in the earth tubes 3 The brine has frozen in the heat exchanger Cold pump will feel very hot 4 Cold pump to earth tubes heat source is not running The pump will whir a little while operating Check 1 4 and correct the error Acknowledge the alarm by pressing on the control knob in the sub menu Alarms when the alarm is displayed Contact a service technician if t
33. perature and OPERATE supplementary heating set point MIN 5 60 30 C T Maximum allowed set point for the house s return feed temperature OPERATE 5 60 MAX 60 C T DIFF Temperature difference for connecting Heating starts at entered set point minus this value 4 C 1 9 TEMPCNT Central heating temperature control function RL MIN OUT ROOM OUT ROOM when ROOM is selected room temperature set point is displayed in main menu OUT Right to make changes is reserved NILAN A S Page 14 of 32 Installation Guide NILAN JVP Version 1 08 CURVE Outside temperature compensation curve see Figure 4 curve menus are SELECTI shown only if OUT selected under menu TEMPCNTRL DEF 1 10 ON 5 CURVE Raises or lowers the calculated curve set point a fixed number of degrees 9 9 0 C CURVE Self defined out in curve at 20 10 0 10 and 20 C for return temperature 20 5 60 DEF 50 C CURVE 10 DEF 45 C CURVE 0 DEF 40 C CURVE 10 DEF 35 C CURVE 20 DEF 30 C ROOM Highest allowed return temperature increase from room compensation shown COMP if room compensation is selected 0 20 MAX 10 C ALARMS ALARM 0 Display of up to 3 current alarms NONE A code and a text are read out for each alarm line Resets in event of power outage ALARM Alarm log which stores and
34. s being operated The light is turned off if the panel is not operated for 30 seconds If the panel is not operated for 5 minutes the control will return to the main menu s initial window the status menu Selection of menu Switching between the various menus is done by turning the knob Menus with an arrow underneath to the right have in addition a sub menu which is activated by pressing once on the knob Switching between the sub menu s items is done by turning the knob The sub menu is left by turning forward or back until Menu up is shown in the display and then pressing on the knob Service menu The sub items in the service menu are not accessible during normal operation as they can only be used in connection with installation and service Setting values Setting values in the display is done in the following way Turn the knob until the value that you wish to change is shown in the display Right to make changes is reserved NILAN A S Page 11 of 32 Installation Guide NILAN JVP Version 1 08 Press the knob to activate the value The value will blink so long as it can be changed It is now possible to change the value by turning the knob Press the knob to accept the last value The value will stop blinking Language At the bottom of the service menu it is possible to select among various languages in the control panel Turn the knob clockwise until the service menu is displayed Press the knob to activa
35. te the service menu Turn the knob until the menu LANGUAGE is shown in the display Press the knob The text in the display will blink Turn the knob forward or back until the desired language is displayed Press once on the knob to approve the language The text will stop blinking Right to make changes is reserved NILAN A S Page 12 of 32 Installation Guide NILAN JVP Version 1 08 Menu summary Operating status menu The system s current operating status is displayed as the first screen image in the main menus OFF The system has been switched off No functions are active apart from Alarm from earth tube environmental pressure switch Circulation pump running and frost protection START Start up of heat pump Circulation pumps are started After short period switched to operation READY The system is switched on but there is no current heat demand HEAT Space heating The house s return temperature is maintained at the desired value WATER Production of domestic hot water MANUAL The user has activated manual operation via Service menu ALARM Active The system is still operating but with reduced function STOP The system stopped because of a critical malfunction Operating mode menus In the menu OPERATION the following operating modes can be selected from OFF No he
36. th that any space between the roof and the ceiling and any attic space is secured along with it being possible to monitor the water temperature lf the central heating or room sensors fall below 2 C all circulation pumps are started along with the heat pump and supplementary heating and the temperatures involved are raised to 5 C if this is possible Right to make changes is reserved NILAN A S Page 19 of 32 Installation Guide NILAN JVP Version 1 08 Alarms menu The menu Alarms displays any alarms and alarm overview for the last 16 alarms In the event of an alarm the backlighting of the display blinks Operating status switches to ALARM or STOP The cause for the alarm can be read in the sub menu ALARM Along with the alarm an alarm code is displayed When the cause for the alarm disappears the alarm switches automatically from active to inactive and the backlight blinking ceases To acknowledge an alarm press on the control knob in the sub menu ALARM when the alarm is displayed With that the alarm disappears from the alarm log Active alarms cannot be acknowledged before the system has registered that the alarm cause no longer is present There are 3 alarm levels INFO General information for the user that does not affect the operation WARNING Given in the event of alarms which allow continued operation with small inconveniences CRITICAL _ This type of alarm means that operation stops entirely
37. vel even during a severe winter The necessary earth tube length depends on Distance between tubes Burial depth Tube diameter Material thickness of tube Soil type clay sand topsoil Water content in the soil Distance down to groundwater Slope of the ground Sunshine shade Snow cover in the winter Outside temperature Right to make changes is reserved NILAN A S Page 26 of 32 Installation Guide NILAN JVP Version 1 08 e Correctly dimensioned heat pump tube length e Correctly set speed on circulation pump Clay and watery soil provide better heat transfer than dry and sandy soil On wet soil therefore the tube length can be dimensioned shorter Earth tubes are buried to a frost free depth 0 7 0 9metres maximum 1 1 2metres Burying too deep increases the risk of permafrost The tubes must be buried on the same contour line to avoid air pockets that can be difficult to vent The highest point for the earth tubes must be at the manifold so that venting can be done through venting valve placed close by The distance between ground source heating pipes must be at least 1 0 m preferably more If for one reason or another it is not possible to meet the separation requirement of 1 metre between the tubes for example at lead into collector it is better to insulate the tubes involved instead of risking short circuiting or permafrost in the ground Distance to trees minimum 2 metres If these directions are followed there is
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