Aermec NRL Free Cooling 2000
Contents
1. NRL 2500 NRL 2800 NRL 3000 NRL 3300 NRL 3600 Model 2000 2230 2500 280 300 3300 360 DIMENSION Height Q mm 2450 2450 2450 2450 2450 2450 2450 Depth Q mm 6400 7250 8100 8100 8100 11100 11100 Width 9 mm 2200 2200 2200 2200 2200 2200 2200 Quantity mn 8 10 12 12 12 16 16 INRLPY 11 11 4086926 03 25 EN 20 2 HYDRAULIC CONNECTIONS STANDARD 00 JEE gt a TERN 1 DIMENSION A B C D E F G H HYDRAULIC MODEL CONNECTION 2000 2250 2500 2800 3000 3300 3600 In Out OUT OUT OUT OUT OUT OUT OUT Tipe VIC TA ULIC VIC TA ULIC VIC TA ULIC VIC TA ULIC VIC TA ULIC VIC TA ULIC VIC TA ULIC 3 3 4 4 4 4 4 In Out IN IN IN IN IN IN IN Tipe VICTAULIC VIC TA ULIC VIC TA ULIC VIC TA ULIC VIC TA ULIC VIC TA ULIC VIC TAULIC 3 3 4 4 4 4 4 In Out OUT OUT OUT OUT OUT OUT OUT Tipe VIC TA ULIC VIC TA ULIC VIC TA ULIC VIC TA ULIC VIC TAULIC VIC TA ULIC VIC TA ULIC 3 4 4 4 4 4 4 In Out IN IN IN IN IN IN IN Tipe VIC TAULIC VICTAULIC VIC TAULIC VIC TAULIC VICTAULIC VICTAULIC VIC TA ULIC 3 4 4 4 4 4 4 NOTE The drawings are only examples of the hydraulic connection 26 INRLPY 11 11 4086926 03 20 3 HYDRAULIC CONNECTIONS WITH PUMPS2. DIMENSION Tomm A B C D E F G H I L M N Model 3300 400 400 1915 720 1915 800 1915 720 1915 400 50 100 ____ 3600 200 400 1915 720 1915 800 1915 720 1915 400 50 100 CENTER OF GRAVITY Empty Running Center of gravity Weight kg a on Weight kg PERC ENTAG E OF V IG HT DISTRIBUTION SUPPORTS PERCENTAGE OF WEIGHT DISTRIBUTION SUPPORTS Yo e 06009909 00 0 0 10 0 7 1 10 3 10 7 8 4 10 5 11 6 10 3 11 3 8 2 10 8 11 6 10 5 11 3 9 1 7 3 9 7 7 6 10 1 8 9 7 4 9 6 7 1 10 0 9 9 7 2 10 2 7 5 10 6 8 3 10 5 11 4 10 3 11 2 8 2 10 8 11 5 10 5 11 2 9 0 7 4 9 796 7 1 10 0 8 8 7 4 9 5 7 7 9 9 32 INRLPY 11 11 4086926 03 21 HYDRAULIC CIRCUIT The NRL consists of TWO CIRCUITS both fitted with Evaporators 1 x circuit Water filter 1 per circ uit supplied supplied with log and Victaulic gaskets Desuperheaters 2 per circuit in parallel mode without filter Water inlet probe SW Water outlet probe SUW ATTENTION The water outlet probe WOP with its trap isfree nearthe electrical box remember to insert it in the collector of the outlet hydraulic par
3. 13 4 13 3 16 9 10 7 13 5 12 1 INRLPY 11 11 4086926 03 29 EN 20 6 POSIZON AVX AND PERCENTAGE WEIGHT DISTRIBUTION NRL 2250 Gy DIMENSION Tomm A B C D E F G Hs 9 I Model 2250 400 365 1900 1100 1560 1560 365 50 100 CENTER OF GRAVITY Empty Running Center of gravity Weight kg e ou Weight kg PERC ENTAGE OF WEIGHT DISTRIBUTION SUPPORTS Yo 30 INRLPY 11 11 4086926 03 20 7 POSIZION AVX AND PERCENTAGE WEIGHT DISTRIBUTION NR 2500 2800 3000 L l Gx 0 0 0 0 Gy L I DIMNSON mm A B C D E F G H I L gt lt gt C ENTER OF G RAVITY Empty Running Center of gravity Weight kg a eM l Weight kg PERC ENTAG E OF WEIG HT DISTRIBUTION SUPPORTS PERC ENTAG E OF WEIG HT DISTRIBUTION SUPPORTS o o o O o o o _ INRLPY 11 11 4086926 03 31 EN 20 8 POSIZON AVX AND PERCENTAGE WEIGHT DISTRIBUTION NRL3300 3600 Gy
4. uu air conditioning C HILLERS Tec hnic al manual installaton maintenance AERMEC COMPANY QUALITY SYSTEM XN ICIM ISO 9001 2000 Cert n 0128 5 AERMEC S P A NRL FREE COOLING roll 2000 3600 4086926 03 Dear Customer Thank you for choosing AERMEC It isthe fruit of many yearsof experience and special design studiesand has been made of the highest grade materials and with cutting edge technology In addition all our products bearthe EC mark indicating that they meet the require ments of the European Machine Directive regarding safety The standard of quality is permanently being monitored and AERMEC products are therefore a synonym for Safety Quality and Reliability The data may undergo modific ations considered necessary forthe improvement of the product atany time and withoutthe obligation for any notice thereof Thank you again AERMEC S p A AERMEC S p A reservesthe right at all timesto make any modification forthe improvement of its product and isnot obliged to add these modification to machines of previous manufacture that have already been delivered orare being built 4 EN CONTENT 1 GENERAL WA RNING anaa nda Er ba En rs 6 LL CONSERVING THE DOCUMENTA 6 1 2 SAFETY PRECAUTIONS AND INSTALLATION 6 2 PRO DUG TIDENTFICA TON atum RW RUN Da RR Rm 6 B DESCRIPTION AND CHOICEOT THE
5. 0 5 0 4 Conection coefficients of the cooling capacity Cf 6 4 2 0 2 4 6 8 10 12 14 16 18 Processed water temperature C input power of the water consumption To take into account the soiling of the exchanger apply the relative fouling factors Tab 9 3 1 KEY Cf correction coefficient of the CORRECTION COEFRCIENTS OF THE INPUT POWER IN COOLING MODE cooling capacity 1 4 p l Ca correction coefficient of the 3 1 3 input power 5 aac H 12 40 C 5 35c 2 B E Au Lrt 30 C 25 C ATIENTION 5 khak EE B E FOR At DIFFERENT FROM 5 C A S Tab 9 2 1 is used forthe correction g 09 factorsofthe cooling capacity and og E 5 PU Q E 6 4 2 0 2 4 6 8 10 12 14 16 18 Processed water temperature C INRLPY 11 11 4086926 03 15 EN 9 2 FORAt DIFFERENTFROM THE RATED VALUE The performances given by the techni cal data referto At 5 C Use table 7 2 1 to obtain the corrective factors of the cooling capacity and input power different than At 5 C 9 3 FOULING FACTORS The performance levels given by the technical data r
6. 19 19 1 20 20 1 20 2 20 3 20 4 20 5 20 6 20 7 20 8 21 211 2L 21 3 22 22 1 22 4 22 2 22 3 23 25 23 2 23 3 24 24 1 24 2 24 3 24 4 24 5 24 6 25 26 SOUND DA TA ite 21 CONTROLAND SAFETY PARAMETERS CALIBRATION 21 SELECTION AND PLAC EOF INSTALLATION sans ian a gada e 24 24 MINIMUM TECHNICAL SPACES mm ENEE 24 DIMENSONAL IABLES agak kaa aan uui 25 MAXIMUM DIMENSIONS ALL VERSIONS 25 HYDRAULIC CONNECTIONS STANDARD 00 26 HYDRAULIC CONNECTIONS WITH PUMPS 21 HYDRAULIC CONNECTIONS WITH STO RAGE TANK AND PUMPS 03 04 28 POSIZON AVX AND PERCENTAG E WEIG HT DISTRIBUTIO N NRL 2000 29 POSIZON AVX AND PERCENTAGE WEIGHT DISTRIBUTION NRL 2250 30 POSIZON AVX AND PERCENTAGE WEIGHT DISTRIBUTION UNR 00 6 2 000 gt J000 RU DR UR EUR Jl POSIZON AVX AND PERC ENTAG E WEIG HT DISTRIBUTION anaana 32 3119721018 SS IRC UIT Tm 33 EXTERNAL HYDRAULIC 33 el NU P 33 EMP TING THE ooa utri Rn lene eo dadha 33 ELEG JAG AL oc 35 RECOMMENDED SECTION OF ELECTRIC 35 CONNEC TON TO IHE P
7. nected in seriesto the high pressure switch on the compressor delivery pipe A e E E e 2 2 PRM 2 FACTO RY ASSEM BLED AC C ESSO Pressure switch with manual reset using a tool electrically con nected in seriesto the high pressure switch on the compressor delivery pipe A e e e e e e E e e e e e INRLPY 11 11 4086926 03 7 TECHNICAL DATA 7 1 CHILLER FUNCTION TEC HNIC AL DATA COOLING 2000 2250 2500 2800 3000 3300 3600 Gosling KW A 494 557 620 674 728 860 904 gourp E 456 517 578 620 662 800 842 e NE A KW A 206 217 228 272 314 318 350 put p E 218 229 240 290 338 338 372 ZE EE Vh A 84970 95800 106640 115930 125220 147920 155490 E 78430 88920 99420 106640 113860 137600 144820 Sen ee RENE kPa A 81 92 92 98 83 104 107 69 80 80 84 70 90 93 Energy indices A 2 40 2 57 2 72 2 48 2 32 2 70 2 58 REIS NS E 2 09 2 26 2 41 2 14 1 96 2 37 2 26 ELECTRICAL DATA Fuel feed A 400V 3 50Hz attert 389 403 417 504 592 597 634 407 421 435 529 624 621 665 Maximum current A 442 405 548 606 664 747 813 Peak current A 651 763 816 815 873 1015 1081 COMPRESSORS SC ROLL Number Circuit no no 8 4 8 4 8 4 10 4 12 4 12 4 12 4 FANS AXIAL Quant
8. 8 INRLPY 11 11 4086926 03 19 EN 15 DESUPERHEATER The heating capacity that can be obtained from the desuperheater is obtained by multiplying the nominal value Pd shown in table 11 1 1 by a suitable coefficient Cd The diagrams will give you the conection coefficients to be used for the chillers in the various versions next to each curve you can see the outside airtemperature to which it refers 15 1 PRESSURE DROPS The NRL has2 parallel desuperheaters for circuits without filters N B the characteristics of the desuperheaters and the pressure drop curvesare shown below For processed water temperatures different from 50 C the result obtained is multiplied by the corection factor that can be obtained from Table 11 1 1 The nominal value refers to airtemperature 39 C water at the desuperheater 45 50 C 5 C DESUPERHEA TER C ORREC TION C OEFHCIENTS 3 00 2 50 T 2 2 00 U oO 150 O U O 2 400 0 50 20 C 0 00 35 40 45 50 55 60 65 Processed water temperature at the desuperheater At 5 C 15 1 1 Conective factors for water temperatures different than the nominal water temperature Average water temperature C Multiplication coefficient
9. CHEN 61000 6 1 CHEN 61000 6 2 CEI EN 61000 6 4 immunity and electroma gnetic emissions forthe industrial sector and Directives EMC 89 336 EEC and 92 31 EEC conceming electromagnetic compa tibility Low Voltage Directive LVD 2006 95 EC DOOR LOCK KNIFE SWITCH ITis possible to accessthe electrical panel by disconnecting the voltage then using the opening lever of the panel itself This levercan be blocked with one or more padlocks during maintenance in orderto prevent the machine being powered up accidentally CONTROL KEYPAD Provides full control functions Fora detailed description referto the user manual Remote contol panel PR3 This allows the chiller command operations to be given from a distance Compressor protection thermomagnetic switch Fan protection thermomagnetic switch Auxiliary protection thermomagnetic switch Discharge gas temperature control thermo stat ELECTRONIC REGULATION MIC ROPROCESSOR CARD Consisting of a management control card and a visualisation card e Functionscarried out adjustment of watertemperature at evaporator inlet with thermostat control forup to 4 levelsand integral proportional fan speed control with DCPX accessory compresor start up delay compressor sequence rotation INRLPY 11 11 4086926 03 9 10 EN count of compressor work hours start stop reset permanent alarms memory autostart after voltage drop multi lingual messages
10. P3 P4 DIMENSION gt lt gt lt gt lt A B MODELLO DES NECEM 2000 2250 2500 2800 3000 3300 3600 In Out OUT OUT OUT OUT OUT OUT OUT Tipe VICTAULIC VICTAULIC VIC TAULIC VIC TAULIC VICTAULIC VICTAULIC VIC TAULIC 4 4 4 4 4 4 4 In Out IN IN IN IN IN IN IN B Tipe VICTAULIC VIC TAULIC VIC TAULIC VIC TAULIC VIC TA ULIC VIC TA ULC VIC TA ULIC 4 4 4 4 4 4 4 In Out OUT OUT OUT OUT OUT OUT OUT Tipe VICTAULIC VIC TAULIC VIC TAULIC VIC TAULIC VIC TA UC VIC TA ULC VIC TAULIC 4 4 4 4 4 4 4 In Out IN IN IN IN IN IN IN Tipe VIC TAULIC VICTAULIC VIC TAULIC VIC TAULIC VICTAULIC VICTAULIC VIC TAULIC 4 4 4 4 4 4 4 NOTE The drawings are only examples of the hydraulic connection INRLPY 11 11 4086926 03 27 20 4 HYDRAULIC CONNECTIONS WITH STORAGE TANK AND PUMPS 03 04 28 EN DIMENSION I Oln mol Olo o gt HYDRAULIC CONNECTION 2500 3600 In Out Tipe IN VIC TA ULIC VIC TA UC IN VIC TA ULIC VIC TA ULIC IN VIC TA ULIC IN VIC TA ULIC IN VIC TA ULIC 4 4 4 4 4 4 4 In Out OUT OUT OUT OUT OUT OUT OUT Tipe VICTAULIC VICTAULIC VICTAULIC VIC TAULIC VIC TAULIC VICT
11. Provided that the disposal of the unit is carried out accor ding to the rules in force in different countries INRLPY 11 11 4086926 03 39 AERMEC aM conditioning 37040 Bevilacqua VR Italy Via Roma 996 Tel 39 0442 633111 Telefax 4339 0442 93730 39 0442 93566 WWW aemec com AERMEC COMPANY QUALITY SYSTEM aT e carta reciclata AR N LAY recycled paper IS recyc l ISO 9001 2000 n 0128 4 C C recycled papier l Arcee The technical data in the following documentation are not binding Aermec reserves the right to make all the modifications considered necessary for improving the product atany time
12. and breather from the system must be completed Before starting the unit make sure that Alte safety conditions have been respected The unity hasbeen properly fixed to the support base The minimum technical spaces have been observed Waterconnections have been perfor med respecting the input and output The hydraulic system hasbeen loaded and vented The hydraulic circuit tapsare open The electrical connections have been properly carried out The voltage is within a tolerance of 1096 of the unit nominal voltage The earthing hasbeen carried out cor rectly Tightening of all electrical and hydraulic connections have been well ca med out 23 2 ARSTCOMMISSIONING OF THE MACHINE Before activating the unit Close the electric panel lid Position the doorlock knife switch of the machine on ON tuming the handle down fig3 Pressthe key ON to start the machine fig 4 when the accessLED appearsthe unit is ready for the operation 23 3 SEASON CHANGEOVER Foreach seasonal change check that the operation conditions retum to the limit Checkthatthe absorption curent of the compressor is less than the maxi mum indicated in the technical data table Checkin the models with Three pha se supply powerthat the noise level of the compressoris not abnormal in this case invert a phase Make sure that the voltage value are within the prefixed limits and that the displacements
13. in the circuit of the pump s from the other circuit For NRL 2250 model with pumping unit it is recommended the installation to the delivery of the module 1250 of a capacity balance valve to balance the capacities between the two evaporators module 1000 and 1250 It is necessary that the waterflow rate to the chiller unit complies with the values reported in the performance tables The systems loaded with anti freeze or spe cific regulations need the water backflow system Special supply recovery water is carried out with appropriate treatment systems EN 21 2 SYSTEM LOAD Before starting the load checkthatthe system drain tap is closed Openallthe drain valvesof the system and of the related terminals Open the shut off devices of the sy stem Startthe filing by slowly opening the water system load cock placed outside the machine When waterbeginsto flow from the terminal vent valves close them and continue loading up to read on the gauge the value of 1 5 bar The system is loaded ata pressure between land 2 bar It isadvisable to repeat thisoperation once the machine has worked for some hours and to periodically check the system pres sure restoring if it dropsbelow 1 bar Checkthe hydraulic seal of the joints 21 3 EMPTYING THE SYSTEM Before starting to drain the system tum off the unit Checkthat the water system load re store tap is closed Open the drain tap outs
14. 160000 180000 200000 220000 240000 260000 280000 300000 Waterflow rate l h Free cooling function pressure drop 400 350 300 250 200 150 100 Pressure drops kPa 50 0 0 20000 40000 60000 80000 100000 120000 140000 160000 180000 200000 220000 240000 260000 280000 300000 Water flow rate I h Average water temperature C Multiplic ational coefficient 1 02 1 0 985 0 97 0 95 0 93 0 91 16 INRLPY 11 11 4086926 03 Pressure drops kPa Pressure drops kPa 11 USEFUL HEADS NRL chiller function useful head 400 350 300 250 200 150 100 50 25 0 40000 60000 80000 100000 NRL free cooling function useful heads 400 120000 140000 160000 180000 200000 350 300 250 200 150 3600 100 50 35 0 Sop 0 40000 60000 8000
15. 22 22 22 29 29 V TER MESES Vh A 85115 95903 106691 115871 125052 147870 155459 E 78413 88871 99330 106518 113706 137540 144658 kPa A 110 123 123 131 117 140 145 94 107 107 111 97 122 126 ENERGY INDIC ES EER W W A 30 53 25 58 23 36 26 45 29 64 27 52 30 34 E 29 73 25 58 23 91 26 18 28 50 27 31 30 59 ELECTRICAL DATA Fuel feed A 400V 3 50Hz Input Current A 30 37 44 44 44 59 59 Maximum current A 442 405 548 606 664 747 813 Peak current A 651 763 816 815 873 1015 1081 COMPRESSORS SC ROLL Number Circuit 8 4 8 4 8 4 10 4 12 4 12 4 12 4 FANS AXIAL Quantity no 2 8 10 12 12 12 16 16 mih A 156000 193200 230400 228000 225600 310400 307200 E 111600 136400 161200 159600 161400 217200 219600 KW A 13 9 17 4 20 9 20 9 20 9 27 9 27 9 dud is E 10 5 13 1 15 7 15 7 15 7 20 9 20 9 Hour cimeri A A 29 6 37 44 4 44 4 44 4 59 2 59 2 p E 22 2 27 75 33 3 33 3 33 3 44 4 44 4 INVERTER FANS Quantity no 8 10 12 12 12 16 16 A 13 9 17 4 20 9 20 9 20 9 27 9 27 9 Input power KW E i i A 29 6 37 44 4 44 4 44 4 59 2 59 2 Input Current A E i Available head I KE EVAPORATORS PLATES Quantity no 2 2 2 2 2 2 2 Water connections in out x diam 3 3 4 4 4 4 4 4 HYDRAULIC CIRCUIT Accumulator capacity No 1 2 X 700 Accumulatorantifreeze heater n W 2 x 300 Expansion tank capacity No l f 4x25 EN 2000 2250 2500 2800 3000 3300 3600
16. 3300 3600 No powersupplies 1 1 1 1 1 1 1 Versions 00 00 00 00 00 00 00 o H SECT A mm 2x185 2x240 3x240 3x240 3x240 4x185 4x185 2 5 Earth mm 1x185 1x240 2x185 2x185 2x185 2x185 2x185 P IL A 630 630 630 800 800 800 800 Cable sections NRL WITH PUMP SEE 2000 2250 2500 No power supplies 1 1 1 with with with Versions hydronic hydronic hydronic kit kit kit et 2240 3x185 3x240 Bc 3 Earth mm 1x185 1x240 2x185 JE IL A 630 630 630 Cable sections NRL WITH PUMP E 2800 3000 3300 3600 No powersupplies 1 1 1 1 with with with with Versions hydronic hydronic hydronic hydronic kit kit kit kit d 8 SECT A mm 3x240 4X185 4x185 4x185 Bc 3 S Earth mm 2x185 2x185 2x185 2x185 O b IL A 800 800 800 800 KEY Sec A Fuel feed IL Main switch INRLPY 11 11 4086926 03 35 36 EN Forhigherlengthsordifferent types of cable installation it willbe the DESIG NERS responsibility to carefully measure the line main switch the supply powerline and the earthing protection connection and the wor king connection cables the length the type of cable Absorption of the unit and its physical position and room temperature WARNING Check thatall power cables are correctly secured to the terminals when switc hed on forthe first ime and after 30 days of use Afterwards check the connection ofthe po wer cables every six months Slack term
17. HIGH HEAD CIRCULATION PUMP Input power KW 13 0 6 58 6 172 122 125 24 7 24 7 Input Current A 2 18 0 9 13 2 26 4 26 4 26 4 33 6 33 6 177 214 214 195 195 165 155 Useful head kPa E 199 239 239 226 231 191 182 SOUND DATA Wa FR A 91 5 93 5 94 5 94 93 5 95 97 und power 1 E 85 5 87 3 88 5 88 0 87 5 89 0 91 0 A 59 5 615 62 5 62 61 5 63 65 sound pressure 2 EN E 535 55 3 56 5 56 0 55 5 57 0 59 0 DIMENSIONS Height mm 2450 2450 2450 2450 2450 2450 2450 Width mm 2200 2200 2200 2200 2200 2200 2200 Depth mm f 6400 7250 8100 8100 8100 11100 11100 Weight when empty kg 5670 6190 6700 7120 7580 9060 9330 NOMINAL REFERENCE CONDITIONS FC COOLING MODE 1 SOUND POWER 2 SOUND PRESSURE Inlet watertemperature 15 Aermec determinesthe sound power value on Sound pressure in an unrestricted range on a Outside airtemperature 2 C the basis of measurements taken in accordan reflective plane directional fact Q 2 10m Nominal waterflow rate ce with standard 9614 2 away from the unit extemal surface complying Compressors OFF with ISO 3744 7 3 Technical data Desuperheater DESUPERHEA TER Total recovered heating capacity KW Water flow rate h 32800 Pressure drop 14 NRLPY 11 11 4086926 03 8 OPERATING LIMITS 8 1 COOLING MODE The devices in their standard configu rations are not suitable for installation in salty environments For
18. between the three phases Three phase supply power do not get above 3 23 3 1 Season change ofthe panel on the machine To activate the season change just pressthe indicated key in fig 5 To ensure that the operation is successful machine must be active asremote or local For further information referto the USE manual 23 3 2 Season change of PR3 Justact directly on the switch The machine tums off automatically and it restarts with the selected operation mode EN WARNING The first start up hasto be carried out with the stan dard settings only at last test vary the valuesof the operation Set Point Before starting powerthe unit for at least 12 24 hours by positioning the pro tection thermomagnetic switch and the door lock knife switch on ON fig 1 Make sure that the control panel istumed off until it allows the oil heater system the compressor casing INRLPY 11 11 4086926 03 37 EN 24 FUNCTIONING CHARAC TERISTICS 24 1 COOLING SETPOINT Default defined 7 C At 5 C 24 2 HEATING SETPOINT Default defined 45 C At 5 C In case of restoring of the unit supplied power after a momentary intemuption the pre set mode is maintained in memory 24 3 COMPRESSOR START DELAY To prevent the compressor start too close to each other two functions have been arranged Minimum time from last tum off 60 seconds Minimum time from last start 300 seco
19. 0 100000 120000 140000 160000 180000 200000 INRLPY 11 11 4086926 03 17 COL The cooling capacity and input power correction factors make allowance forthe presence of glycoland the different evaporation temperature The pressure drop correction factor already takesaccount of the different flow rate deriving from the application of the water flow rate Correction factor The correction factorof the water flow rate is calculated so asto maintain the same At that would be used in the absence of glycol NOTE To make it easierto read the following graph an example is given By using the diagram below it possible to establish the percentage of glycol necessary this percentage can be calculated taking into account one of the following factors On the basisof the fluid considered waterorair it will be necessary to enterthe graph from the right or left side from the intersection of the outside airtemperature or processed watertemperature straight lines and the relative curves a point isobtained through which the vertical line that will identify both the percentage of glycol and the relative correction coefficients will ha ve to pass 12 1 HOWTO READ THE GLYCOL CURVES The curves shown in the figure summa rise a notable quantity of data each of which is represented by a specific Curve In orderto use these curves Correctly it is necessary to make some initial considerations Ifyou want
20. 03 GP Protect the extemal coilsfrom accidental knocks 260x2 260 350 350x2 350x2 350x2 500x2 500x2 PGS Card to be inserted in the electronic card of the unit Allows you to programme two time bands per day two switch on off cycles and to have differentiated programming foreach day of the week A e e e e e e e E e e e e e e e AERWEB30 the AERWEB device allowsthe remote control of a chillerfrom a common PC using a serial connection Using additional modules the device allowsthe chillerto be controlled via the AERWEB30 telephone line using the AERMO DEM accessory or via the GSM network using the AERMODEM GSM accessory AERWEB can pilot up to 9 chillers but each of these must be equipped with accessory AER485 or AER485P2 A e e e e e e e E e e e e e e e Current rephaser Parallel connection with the motor makes the reduction of input current possible RIF It can only be installed when the machine is being made and must therefore be specified when the orderis placed RIFNRL2000 RIFNRL2250 RIFNRL2500 RIFNRL2800 RIFNRL3000 RIFNRL3300 RIFNRL3600 The water accumulators with holes and supplementary electric heaters leave the factory with plastic protection TRX1 caps Before loading the system if the installation of an electric heater is not envisaged it is compulsory to replace the plastic caps with the special TRX1 A e e e e e e e E e e e e e e e PRM 1 FACTO RY ASSEMBLED ACCESSORY Pressure switch with manual reset using a tool electrically con
21. 65 0 79 0 105 0 98 0 93 5 925 850 76 0 70 0 3744 ATENTON The data referto the version with stan dard fans 17 CONIROLAND SAFETY PARAMETERS CALIBRATION CHECKPARAMETERS 0 000000 MIN 10 C Cold Setting Water inlet temperature in cooling mode MAX 20 DEFAULT 7 0 MIN 30 C heating Setting Water inlet temperature in heat mode MAX 50 C DEFAULT 50 C Anti f lam int tion t t EV sid oe e Ant feeze intervention Antifreeze alam intervention temperature on EV side MAX ee DEFAULT 3 C P rtionalt ture band within which th EE E Total differential roportional temperature band within which the compressors are MAX 10 C activated and deactivated DEFAULT 5 C Autostart auto INRLPY 11 11 4086926 03 21 22 EN NRL 2000 2250 2500 T STA COMPRESSOR THERMOMAGNETIC SWITCHES 400V CIRCUITI 2 51A 51A 62A 62A 62A mtc la 51A 51A 51A 62A 62A 62A mtc 1b A A A mtc 2 51A 51A 51A 62A 62A 62A mtc 2a 51A 51A 51A 62A 62A 62A mtc 2b A A A A A XU High pressure transducer _ TAP bar COE 30 CHILLERCIRCUITSA TYVALME ssi AP bar BP bar only in heat pump 30 30 30 FAN THERMOMAGNETIC SWITCHES The calibration is camed out on a themrmomagnetic switch single v
22. AULIC VICTAULIC 4 4 4 4 4 4 In Out IN IN IN IN IN IN Tipe VIC TAULIC VICTAULIC VICTAULIC VIC TAULIC VIC TAULIC VICTAULIC VICTAULIC 4 4 4 4 4 4 4 In Out OUT OUT OUT OUT OUT OUT OUT Tipe VICTAULIC VICTAULIC VICTAULIC VIC TAULIC VIC TAULIC VICTAULIC VICTAULIC NOTE The drawings are only examples of the hydraulic connection INRLPY 11 11 4086926 03 4 4 4 4 4 4 4 20 5 POSIZION AVX AND PERCENTAGE WEIGHT DISTRIBUTION NRL 2000 Gy gt lt gt lt DIMNSON mm A B C D E FF Gs H Model 2000 400 365 1900 1470 1900 365 50 100 CENTER OF GRAVITY Empty Running Center of gravity Weight kg Center of gravity Weight kg Gy in Unit Water PERCENTAGE OF WEIGHT DISTRIBUTION SUPPORTS Yo PERC ENTAGE OF WEIGHT DISTRIBUTION SUPPORTS Yo AVX e 9 10 3 14 9 12 0 17 4 9 7 14 0 12 8 13 2 13 0 14 4 14 2 13 4 13 2 9 2 13 3 10 6 12 9 13 6 14 5 13 1 14 1 17 0 13 6 10 5 13 2 13 6 9 0 12 2 10 6
23. Lie 19 1 09 096 20 NRLPY 11 11 4086926 03 45 C 40 C 35 C 30 C 25 C Pressure drops kPa 15 2 DESUPERHEATER PRESSURE DROP OF HYDRAULIC CIRCUIT 2 100 3300 3600 90 80 2800 3000 60 50 2 40 000 2250 520 30 20 10 o 20 000 40 000 60 000 80 000 100 000 120 000 Water flow rate I h 16 SOUND DATA Total sound levels Octave band Hz NRLFC Pow 4 125 250 500 1000 2000 4000 8000 Sound power dB A T d Sound power by central band frequency dB anken kr di d aana a sne NRL2000A 920 600 74 0 1010 900 878 85 9 821 781 700 kaen In SETH AE wie men NRL2250A 93 0 61 0 75 0 101 7 94 4 89 4 87 4 83 9 78 6 69 2 9614 2 NRL2500A 945 625 765 102 2 96 5 905 885 852 79 0 682 NRL2800A 94 0 62 0 76 0 104 0 93 0 3890 90 0 82 0 740 67 0 Sound pressure NRL3000A 93 5 61 5 75 5 105 0 920 89 0 88 0 820 74 5 68 0 gas bene NRL3300A 95 0 630 77 0 104 0 955 915 900 840 760 69 0 reflecting plane directional factor 0 2 in accordance with standard ISO NRL3600A 97 0
24. OUND DATA A 91 5 93 5 94 5 94 93 5 95 97 em E 85 5 87 5 88 5 88 0 87 5 89 0 910 A 59 5 61 5 62 5 62 61 5 63 65 53 5 55 5 56 5 56 55 5 57 59 DIMENSIONS Height mm 2450 2450 2450 2450 2450 2450 2450 Width mm 2200 2200 2200 2200 2200 2200 2200 Depth mm 6400 7250 8100 8100 8100 11100 11100 Weight when empty kg 5670 6190 6700 7120 7580 9060 9330 NOMINAL REFERENCE CONDITIONS COOLING MODE 1 SOUND POWER 2 SOUND PRESSURE Inlet watertemperature 12 C Aemec determines the sound power value Sound pressure in an unrestricted range on Outlet watertemperature 16 on the basis of measurements taken in a reflective plane directional fact Q 2 Outside airtemperature 35 accordance with standard 9614 2 10m away from the unit extemal surface At 5 complying with ISO 3744 INRLPY 11 11 4086926 03 7 2 FREE COOLING FUNCTION TECHNICAL DATA The water connections are all of the Victaulic type Forthe 2250 version 3 connectors are foreseen forthe 1000 model and 4 forthe 1250 model 1 The useful heads referto the nominal air flow rate INRLPY 11 11 4086926 03 13 COOLING 2000 2250 2500 2800 3000 3300 3600 KW A 458 486 514 582 652 798 880 446 486 526 576 627 792 887 Total input power kW 15 19
25. OWER SUP PIY sasasi raaa 36 ELECTRICAL POWER CONNECTION asian sarawa aia 36 AUXILIARY CONNECTIONS AT THE USER INSTALLER EXPENSE 36 CONIROLAND FIRST STAR CUP a sasapan 37 PREPARATION FOR COMMISSIONING nnn 37 FIRST COMMISSIO NING OF THE 37 EE 37 FUNCTIONING CHABACTERISIC 5 Eege 38 wm 38 38 COMPRESSOR STAR IDEA eegene 38 IRC ULA TO mm 38 RENTE EE 38 WATER FLOW Hee 38 REGULAR MAIN IENANC E weka ea nak ER attis 38 EXTRAORDINARY MAINTENANC E ern 38 EN AERMEC S p A 37040 Bevilac qua KN Italy Via Roma 996 Tel 39 0442 633111 mmg Telefax 0442 93730 39 0442 93566 c air conditioning WWW aemec info aemec NRL FREE C OOLING CONFORMITY DECLARATION We the undersgned declare on our own exclusive responsibility that the object in question so defined NAME NRL FREEC OOLING TYPE AIR WATER CHILLER MODEL and to which this declaration refers complies with the following standardised regulations CEI EN 60335 2 40 Safety regulation regarding electric heat pumps air conditioners and dehumidi fiers EN 61000 6 1 Loa CEI EN 61000 6 3 Electromagnetic immunity and emission in residenti
26. RM EC 37040 Bevilacqua VR ITALIA Model Prod date Pe kW In A 50 Hz Is A IP 0 S HP LP bar M TS HP LP C Max kg RES EL EL HEATER w InRx A RES EL AE HEIZUNG Itot A Serial no Fig 1 INRLPY 11 11 4086926 03 3 DESCRIPTION AND CHOICE OF THE UNIT The NRL Free cooling series applian ces are water chillers equipped with an extemal air cooling capacity re covery system called free cooling The water free cooling system con ssts in integrating and eventually completely replacing the cooling ca pacity delivered by the compressors through an additional water coil that exploits the low temperature of the extemal airto coolthe system s retum water Therefore basically free chilled water can be obtained with this sy stem for all installations where a con tinuos production is not required and therefore also with low extemal air temperatures e g industrial proces ses shopping centres hospitals and othercivil applications Considerable energy saving can be achieved with this type of solution when the retum flow of the system is 22C below the extemal air tempe rature a three way valve diverts the water into the free cooling coil to be pre cooled after which it is sent to the evaporator where it is taken to the desired temperature The NRL free cooling unitsare compr sed of two R410A refrigerating circuits and one water circ
27. UNIT uiti bicho 7 SAR VERSIONS VATLA DUES ydede Res bs intereses t 7 4 CONFIGURA TO R E 8 aulis UR AJ IT ect 9 Bl FRAME TR KE d 9 2 HYDRAULIC COMPONENTS 9 2 3 SAFEN AND CONTROL COM EE ME 9 5 4 ELEC TRIGA COMPONENTS 9 6 REENEN 10 TEANICALDA TA 1 CHILLER FUNC TON TECHNICAL DATA 12 FREE COOLING FUNCTION TECHNICAL DATA 13 1 5 TEGHNIC AL DA TA DESUPERHEATER scribantur 14 8 OPERATING m com 15 8 1 CODING MODE EN 15 8 2 DESIGN Kul NS 15 I C ORREC TON TE TU aaa BN MM MEE 15 91 INPUTPOWER AND COOLING CAPACITY HIGH EFFICIENCY VERSIO N 15 92 FOR ATDIFFERENTFROM THE RATED VALUE 16 93 FOVUNG FACTO icc apan agan BADA ama DA a anan naga Aga anaa wa papa anggah 16 10 TOTAL PRESSURE DROPS kaaaton anana kanga ajaa aa aaa anaa Aa pana a a aba aaa ERE 16 11 BEE 17 12 Cho m 18 121 HOW TO READIHE GEN OL JR E aaa raisa aan san ea BAN a naka naga ga ak 18 5 EXPANSION TANK CAUBRATON siss 19 14 MINIMUM WATER CONTENT Kawa Gf 19 18 Diss M ER HE aswa eaaa aa a pra aan aj a a AA Ngan a ab aana aa 20 1901 PRESSURE DROPS eege 20 15 2 DESUPERHEATER PRESSURE DROP OF HYDRAULIC CIRCUIT 2 21 INRLPY 11 11 4086926 03 16 17 18
28. al environment EN 61000 6 2 M EP CEI EN 61000 6 4 Electromagnetic immunity and emission in industrial environment EN378 Refrigerating system and heat pumps Safety and environmental requirements UNI EN 12735 Round welding free copper pipes for air conditioning and cooling UNI EN 14276 Pressure equipment for refrigerating systems and heat pumps thus meeting the essential requisites of the following directives LV Directive 2006 95 Electromagnetic Compatibility Directive 2004 108 EC Machine Directive 2006 42 PED Directive relating to pressure equipment 97 23 In compliance with Directive 97 23 EC the product meets the Total Quality Warranty procedure module H with certificate no 06 270 QT3664 Rev 5 issued by the notified body no 1131 CEC via Pisacane 46 Legnano MI Italy The person authorized to compile the technical file iss Massimiliano Sfragara 37040 Bevilacqua VR Italy Via Roma 996 Bevilacqua 28 12 2009 Marketing Director Signature Get INRLPY 11 11 4086926 03 5 EN GENERAL WARNINGS Standards and directives to be followed in the design and manufacture of the unit Safety system Machine Directive 2006 42 EC Low voltage directive LVD 2006 95 EC Electromagnetic compat bility directive EMC 2004 108 EC Pressure containers directive PED 97 23 C E EN 378 UNI EN 14276 Electrical part EN 60204 1 Protection rating IP24 Acoustic pa
29. allel using a sleeve of inch 21 1 EXTERNAL HYDRAULIC CIRCUIT RE COMMENDED The selection and installation of compo nents outside the NRL should be camied out by the installer who should work according to the technical code of practice and in compliance with the legislation in force in the country of destination MD 329 2004 Before connecting the pipes make sure that they do not contain stones sand rust slag orany foreign bodiesthat may damage the system It is necessary to make a by passto the unit to be able to out the cleaning of the pipes without having to disconnect the machine The connection pipes must be propery supported so asnot to burden the unit with their weight On the water circuit it is advisable to install the following instruments if not foreseen in the version you have l Two pressure gauges of suitable size input and output section 2 Two antivibrating couplings input and output section 3 Two shut off valves normal input sec tion output section calibrating valve 4 Two thermometers input and output section Expansion tanks Pump Accumulation Flow switch Safety valve 0 Charging unit 1 Chillerdrain tap in the tube output evaporator forstandard ver sion ATTENTION In Case of version with pumping unit without standby pump it isrecommen ded to install unidirectional valves to the delivery of each module So water reflow is avoided
30. be compulsory referred to The wiring layout together with the manuals must be kept in good conditions and readily ACCESSIBLE FOR FUTURE O PE RATIONS ON THE UNIT It is compulsory to check the machine sealing before connecting the elec tric al wiring The machine should only be powered once the hydraulic and electric operations are completed 22 1 RECOMMENDED SECTION OF ELEC TRIC CABLES The cable sectionsindicated in the table are advised fora maximum length of 50 m ted contactthe energy supplier For electrical wirings use isolated double cablesaccording to the standardsin force in the different countries It is necessary to use a omnipolar thermomagnetic switch in com pliance with the CEI EN standards contact opening of atleast 3 mm with adequate switch capa bility and differential protection based on the followed electrical data table installed asclose as possible to the machine It is necessary to carry out an efficient earth connection The manufacturer can not be held responsible forany damage cau sed by the failure and ineffective earthing of the machine Forunits with Three phase power checkthe correct connection of the phases WARNING It is forbidden to use waterpipesfor the earthing of the machine Cable sections NRL BASE ase ane 2000 2250 2500 2800 3000
31. d personnel with the suitable equipment To handle the machine see figure MUM Al the personnel in charge must know the operations and possible risks that may arise when all the unit installation operations begin hook up the lifting beltsto the provided eyebolts asindicated in figure WARNING ALWAYS USE ALL THE PROVIDED EYEBOLTS Interpose protections between the straps and the machine to prevent the structure of the unit being da maged by the straps It is absolutely forbidden to stand under the unit Take into account that when the chiller is working vibrations may be generated it istherefore advisable to install anti vibration supports AVX ac cessories fitting them to the holes in the base according to the assembly diagram 19 1 MINIMUM TECHNICAL SPACES mm 24 INRLPY 11 11 4086926 03 3000 It is compulsory to provide the ne cessary technical spaces to allow REGULAR AND EXTRAORDINARY MAINTENANC E INTERV ENTIONS Fasten the unit by checking careful ly that its on the same level check that easy accessto the hydraulic and electric part is allowed height WARNING AL WAYS USE ALL THE PROVIDED EYEBOLTS 20 DIMENSIONAL TABLES 20 1 MAXIMUM DIMENSIONS ALL VERSIONS
32. d with ductable discharge it releases overpressure in the event of abnormal working pressure levels 5 3 SAFETY AND CONTROLCOMPONENTS High pressure switch AP installed as standard With fixed calibration placed on the high pressure side of the chiller circuit it shuts down compressor operation in the case of abnormal operating pressure Low pressure transducer BP TP2 instal led as Standard Of fixed calibration located on the low pressure side of the refrigerating circuit it stops the operation of the compressor in the event of anomalous work pressures EN High pressure transducer TP3 installed as Standard Placed on the high pressure side of the chil ler circuit it communicates to the control card the operating pressure sending a pre alarm in case of abnormal pressure Evaporator antifreeze heating element Its operation is commanded by the an tifreeze probe located in the plate type evaporator It isactivated when the water temperature is 3 C and deactivated when the water temperature is 5 C The dedicated software in the regulation card manages the heater Refrigerating circuit safety valve This intervenes by releasing overpressure in the event of abnormal working pressure le vels Calibrated at 45 baron the HP branch 5 4 ELECTRIC AL COMPONENTS ELECTRIC AL PANEL Containsthe powersection and the mana gement of the controlsand safety devices In accordance with standards
33. ding to the to the regulations in force in the country where the machine is insta lled It is also suggested to check the mainssupply characteristic s to ensure it is suitable forthe levels indicated in the electrical data ta ble also taking into consideration any other equipment that may be operating atthe same time Theunitisonly powered afterthe last hydraulic and electric instal lations Follow the connections instruc tions of the phase conductors and earth The powerline will have a spe cial protection upstream against short circuits and earth lossesthat sectionsthe system according to otherusers The voltage should be within a tolerance of x10960f the rated supply voltage ofthe machine for Three phase units displacement ma x 3 between the phases If these parametersare not respec 2 2 EN All electrical operations must be camed out BY QUALIFIED PERSONNEL IN ACCORDANCE WITH THE CORRESPONDING REGULATIONS trained and in formed about the risks related to such operations The characteristics of electric lines and related components must be esta blished by PERSONNEL AUTHORISED TO DESIG N ELECTRIC INSTALLATIONS fol lowing intemational regulations and the national regulations of the country in which the unit is installed in compliance with the legislative regulations in force at the moment of installation For installation requirements the wiring layout supplied with the unit must
34. efer to conditions with clean tubes with a fouling factor 1 For other fouling factor values multiply the data of performance table 7 3 1 by the coefficients given 10 TOTALPRESSURE DROPS The pressure drops include EVAPORATORS WATER FILTERS HYDRAULIC CIRCUITS The diagram pressure drops are related to an average watertemperature of 10 C The following ta ble showsthe correction to apply to the pressure drops when the average watertemperature varies The chiller comprises two hydraulic Circuits The pressure drops indicated in the graphics are relative to a single circuit SINCE THE HYDRAULIC PARALLEL IS IN CHARGE OF THE CUSTOMER OR THE OR THE PERSON IN CHARGE ATTENTION The water outlet probe WOP with its trap isfree nearthe electrical box rememberto insert it in the collector of the outlet hydraulic parallel using a sleeve of inch 9 2 1 Atdifferent from the rated value At different from the rated value 3 5 8 10 9 3 1 Fouling factor K nv y Di Fouling factor K nm y W 0 00005 0 0001 0 0002 Cooling capacity correction factors Cooling capacity correction factors 1 0 98 0 95 Chiller function pressure drop 300 250 200 Pressure drops kPa 100 0 20000 40000 60000 80000 100000 120000 140000
35. ems that may be required in orderto carry out the interventions under guarantee Do not modify ortamperthe with chiller asthis may cause dangerous situations and the manufacturer shall not be liable forany damages The warranty shall not be valid if the indications men tioned above are not observed 12 SAFEIY PRECAUTIONS AND INSIALLATION The chiller must be installed by an authorised and qualified techni Cian in compliance with the natio nallegislation in force in the country of destination MD 329 2004 Aermec shall not be held respon sible forany damage whatsoever resulting from the non compliance with these instructions Before starting any kind of work it is necessary TO READ CAREFULLY THE INSTRUC TIO NS AND TO PERFO RM THE SAFETY CHECKS TO AVOID ANY RISKS All the personnel in charge must know the operations and the risks that may arise when all the unit installation operations begin 2 PRODUCTIDENTIHCATION The NRL can be identified by the following PACKING LABEL which showsthe product identification data TECHNICAL PLATE Positioned on the right lateral side member see fig 1 ATIENTION Tampering removal and ora missing identification plate does notallow safe identification ofthe product and Will complicate any installation or maintenance operation 6 TECHNICAL PLATE POSITION ATIENTION Dra wings are only an example AIR CONDITIONING AERMEC SPA via Roma 996 C A E
36. entilation line 18A 18A NUMBER OF FANS e No A E fa ns INRLPY 11 11 4086926 03 23 FOR THE INSTALLER 18 SELECTION AND PLACE OF INSTALLATION Before installing the unit decide with the customerthe position in which it will be placed pay attention to the following points The unit must be installed by an authorised and qualified technician in com pliance with the national legislation in force in the country of destination MD 329 2004 We shall not be held responsible forany damage whatsoever resulting from the non compliance with these instructions Before starting any kind of work it is necessary TO READ CAREFULLY THE INSTRUC TIONS AND TO PERFORM THE SAFETY CHECKS TO REDUCE ANY RISK TO A MINI 19 the support surface must be able to withstand the weight of the unit the safety distance between the units and other equipment or struc tures must be strictly respected so that the airin fansinlet and outlet Circ ulates freely The unit must be installed by an authorised technician in complian ce with the national laws the country of destination respecting the minimum technical spacesto allow maintenance POSITIONING The machine isdelivered from the fac tory wrapped in estinc oil Before moving the unit checkthe lifting capacity of the machines used Once the packaging hasbeen re moved the unit must be handled by qualifie
37. entilation line 9A 9A NUMBER OF FANS No A Efans 4 NRL COMPRESSORTHERMOMAGNETIC SWITCHES AN MTCI CIRCUMI 62A 2800 62A 3000 51A 51A MTC 1A 62A 62A 51A 51A MTC 1B 51A 51A MTC2 51A 51A 51A 51A MIC 2 51A 51A 51A 51A M TC 2B 51A 51A 51A 51A TEEN High pressure transducer TAP bap 50 50 TBP ban CHILLER CIRC UIT SAFETY VAIVE AP bar BP bar only in heat pump 30 30 FAN THERMOMAGNETIC SWITCHES The calibration is camed out on a themrmomagnetic switch single ventilation line 13A NUMBEROFFANS No A Efans INRLPY 11 11 4086926 03 NRL COMPRESSOR THERMOMAGNETIC SWITCHES 400V MTC1 3300 51A CIRCUTT CRUZ 51A 62A 3600 CIRCUTT CIRCUIT 62A MTC 1A 51A 51A 62A 62A MTC 1B 51A 51A 62A 62A 2 62A 62A 62A 62A MTC2A 62A 62A 62A 62A M TC 2B 62A 62A 62A 62A ban High pressure transducer 8 TAP bar IER CHILLER CIRC UIT SAFETY VAIVE AP bar BP bar only in heat pump 30 30 FAN THERMO NETIC SWITCHES The calibration is camed outon a thermomagnetic switch single v
38. have to come back over C the reset is manual 25 REGULAR MAINTENANCE Any cleaning operation isforbidden before disconnecting the unit from the power supply Check for voltage before operating Periodic maintenance is essential to main tain the unit in perfect working order under the functional as well asthe energetic aspect Therefore it is essential to provide yearly controls for the 25 6 1 Hydraulic circuit CONTROL Water circuit filling Water filter cleaning Flow switch control Airin the circuit leaks Thatthe water flow rate to the evapo rator isalways constant The hydraulic piping thermal insulation state Where provided the percentage of glycol 25 6 2 Electric circuit CONTROL Efficiency of safety devices Electrical power supply Electrical powerconsumption Connectionstightened Function of the compressor housing resistance WARNING ATANY INTERVENTIONS OF THIS ALARM ITIS REC OMMENDED TO IMMEDIATELY CONTACT THE NEAREST TECHNICAL SERVIC E ASSISTANCE 24 6 WATERFLOW RATE ALARM The GR3 managesa waterflow alarm con trolled by a flow meter installed asstandard on the machine Thistype of safety device can activate afterthe first 10 operating secondsof the pump if the water flow is insufficient This alarm sets the block of the compressor and the pump 25 6 3 Chiller circ uit CONTROL Compressor conditions Efficiency of the plate type exchanger resi
39. he expansion tank is 1 5 bar and the volume is 25 litres Maximum value 6 bar The tank must be calibrated according to the maximum difference in height H of the device see figure according to the formula p calibration bar H m 10 2 40 3 For example if the level difference H is 20m the calibration value of the tank will be 2 3 bar If the calibration value obtained from the calculation is lowerthan 1 5 bar i e forH 12 25 maintain the standard calibration 14 MINIMUM WATER CONTENT Ptar H 10 2 0 3 Key 1 Check that the highest user does not exceed a level difference of 55 metres 2 Check that the lowest user can sustain the global pressure acting at that point Hydraulic height Hm 2 20 15 2122 Expansion tank calibration bar 28 23 18 15 Water content reference value OQ 2 174 2 646 3 118 3590 3852 Water content reference value Io 1190 1404 1616 1732 Water content reference value 622 732 844 904 Working reference conditions 1 Cooling Max watertemp 40 C Min watertemp 4 C 2 Heating heat pump Max watertemp 60 C Min watertemp 4 C 3 Heating boiler Max watertemp 85 C Min watertemp 4 C NRL U M VERS 2000 2250 2500 2800 3000 3300 3600 quantity mn 10 12 VKW 1 All 4 Minimum water content 2
40. ide the machi ne and all the vent valves of the system and the corresponding terminals If the system uses glycol this liquid should not be drained to the environment becau se itisa pollutant It must be collected and if possible reused ma chine hydraulic circ uit The dra wingsare only examples of the 1 Water filter 1x circuit SUPPLIED 2 Three way valve 3 Evaporator ATENTON In addition to the filter Victaulic and welded pipesare provided INRLPY 11 11 4086926 03 33 EN The drawingsare only examples of the machine hydraulic circuit A KO CO 1 Waterfilter 2 Three way valve 3 Evaporator 4 Flow switch 5 6 Pump Expansion tank ATTENTION In addition to the filter Victa ulic and welded pipesare provided The drawingsare only examples of the machine hydraulic circuit Water filter 1 x circuit Three way valve Evaporator Flow switch Pump Expansion tank Accumulator AOURWN PE AN ATTENTION In addition to the filter Victaulic and welded pipes are provided 34 INRLPY 11 11 4086926 03 22 ELECTRICALWIRINGS The default NRL chillers are complete ly wired and only need the connec tion to the powersupply net down stream to a group switch accor
41. inals could cause the cables and components to overheat 22 4 CONNECTION TO THE POWER SUPPLY Check there isno voltage on the elec tric line you want to use 22 4 1 To access the electric box Tum Yathe screwsof the electrical panel in counter clockwise direction Tum the handle of the doorlock knife switch to OFF see figure In this way there isaccessto the electrical panel INRLPY 11 11 4086926 03 22 2 ELECTRICAL POWER CONNEC TION Forfunctional connection of the unit take the supply power cable to the electrical panel inside the unit fig 1 in the previous page and connect itto the knife switch terminals obser ving the phase and the earth fig 2 22 3 AUXILIARY CONNECTIONS AT THE USER INSTALLER EXPENSE The terminals indicated in future explana tions are part of the GR3 control boards For installation requirements refer to the wiring diagram supplied with the unit The wiring diagram together with the manuals must be kept in good conditions and readily ACCESSIBLE FOR FUTURE OPERATIONS ON THE UNIT 22 3 1 Auxiliary switch IAD To prepare the auxiliary switch connect the device to the clamp 4 of the control board M7 SC and to the clamp 4 of the remote panel DEE onan amp m n 9 22 3 2 Pump contactor CPO1 2 To prepare the pump contactor connect the device CPOI to the clamp 2 of the control board M16 SC and the device CP02 to the cla
42. ired by the system The higher the cooling capacity re covery with free cooling the lower the integration is COMPRESSORS ONLY when the extemal airtemperature is greaterthan the retum temperature of the system water 3 1 VERSIONS AVAILABLE COOLNG ONLY A E maximum permissible extemal tem perature 46 C processed watertemperature 18 C The units with desuperheater D are not available in the versions YD XD only fortemperature lower than 4 C Danger GAS R410A The chiller is delivered with the correct refrigerant load The R410A is free of chlorine it isnot flammable and doesnot ham the ozone layer However any interventions are always competence of the technical service assistance SAT oran authonsed technician The refrigerant circ uit is under steam High temperatures are also poss ble The unit may only be opened by a service technician SAT orby an authorised technician The operationsin the cooling circuit can only be performed by a qualified refrigeration technician INRLPY 11 11 4086926 03 7 8 EN 4 CONHGURATOR 123 456 7 8 9 0 D B 516 NRL 200 0 2 7 ii ig i 00 field 12 3 Code NRL 45 6 Size 200 225 250 280 300 330 360 7 Compressors 0 Standard compressor 8 Thermostatic valve Standard mechanical thermostatic valve Y Mechanical thermostatic valve with produced water from 4 C to 6 C x Electronic thermostatic valve with p
43. ity no 8 10 12 12 12 16 16 malh A 156000 193200 230400 228000 225600 310400 307200 E 111600 136400 161200 159600 161400 217200 219600 A oower KW A 13 9 17 4 20 9 20 9 20 9 27 9 27 9 10 5 13 1 15 7 15 7 15 7 20 9 20 9 A A 29 6 37 44 4 44 4 44 4 59 2 59 2 22 2 27 75 33 3 33 3 33 3 44 4 44 4 INVERTER FANS Quantity no f 8 10 12 12 12 16 16 A 13 9 17 4 20 9 20 9 20 9 27 9 27 9 Input power kW E i A 29 6 37 44 4 44 4 44 4 59 2 59 2 Input cument A E Available head amp UM URN GEM RUNE EVAPORATORS PLATES Quantity no 2 2 2 2 2 2 2 Water connections in out diam 3 3 A 4 4 4 4 4 kPa 201 2 242 223 E 182 HYDRAULIC CIRCUIT Accumulatorcapacity No 2 x 700 Accumulator antifreeze heater n W 2 x 300 A Expansion tank capacity No l E 4x25 The water connections are all ofthe Victaulic type For the 2250 version 3 connectors are foreseen forthe 1000 model and 4 forthe 1250 model 1 The useful heads referto the nominal air flow rate INRLPY 11 11 4086926 03 11 12 2000 2250 2500 2800 3000 3300 3600 HIGH HEAD CIRCULATION PUMP Input power KW 13 0 6 5 8 6 17 2 17 2 17 2 24 7 24 7 Input current A A 22 0 11 14 6 29 2 29 2 29 2 42 4 42 4 A 204 242 242 223 224 192 182 FER SS E 223 262 262 250 255 214 206 S
44. mp 4 and 6of the control board 1 SE2 22 3 3 Extemal alarm EA To prepare an extemal alarm device con nect the device contact to the clamp 1 and 2 ofthe control board M17 22 3 4 Connection PR3 standard Connect the remote panel PR3to the con trol board M7 SC asshown below rememberthat the maximum allowed distance is 50 m THE CONNECTED MUST BE ENABLED AS WELL See next procedure CONNECTION REMOTE PANEL PR3 COMANDO A DISTANZA REMOTE CONTROL M7 SC Q u O s e ON 3 _ a E _ eu _ ALARM PR ENABLING REMOTE PANEL PR3 To enable the remote panel PR3 L R key on the small panel of the GR3 on the machine asshown in the figure above when the LED next to the letter R Remote lights up the machine function will be enabled by the remote panel 23 CONTROLAND HRST START UP 23 1 PREPARATION FOR COMMISSIO NING Bearin mind that a free start up service is offered by the Aermec Technical Service forthe unit of this series at the request of Aemec customers or legitimate owners and in ITALY only The start up must be previously agreed on the basis of the system implementation times Before the intervention of the AER MEC After Sales Service all the operations electrical and hydraulic hook ups loading
45. nds 24 4 CIRCULATION PUMP The electronic board providesan output to manage the circulation pump Afterthe first 10 secondsof the pump ope ration when the waterflow rate is running WARNING Inspec tion maintenance a d possible repair operations must be carried out only by an authorised technician according to the law A deficient check mainte Q nance operation may result in damage to thingsand people For machines installed near the sea the maintenance intervals must be halved 38 INRLPY 11 11 4086926 03 activate the function of water flow rate alarm flow switch 24 5 ANTI FREEZE ALARM The anti freeze alarm isactive asif the machine istumed off or if the machine is in ssandby mode In orderto prevent brea kage of the plate type exchanger due to freezing water contained the compressor is loc ked the machine istumed on under 4 C and the resistance starts up if standby below 5 C If the temperature detected by the probe in the exchangeroutput and in the chiller input isbelow 44 C WARNING THE ANTI FREEZE SET TEMPERA TURE CAN BE VARIED ONLY BY AN AUTHO RISED SERVICE CENTRE AND ONLY AFTER VERIFYING THATIN THE WATER CIRCUITIS AN ANTIFREEZE SOLUTION The intervention of this alarm setsthe com pressor block and not of the pump which remains active and the resistance starts up if installed Forthe restoration of the normal functions of the temperature of the wateroutput
46. operation with local or remote control Machine status displa y ON OFF compressors flow switch low pressure anti freeze compressor ovenoad fan overload pump overload e Display of the following parameters waterinlet temperature accumulatortemperature waiting time for restart alarms visualisation Settings a without password cooling set total differential b with password antifreeze set low pressure exclusion time alarms summary wateroutlet temperature display language delta T accesscode Alam management high pressure Forfurther information referto the user high pressure low pressure manual 6 ACCESSORIES 200 225 250 280 300 330 360 AER485P1 Through this accessory it is possible to connect the unit with BMS supervision systems with electrical standard RS 485 and MODBUS type protocol A e e e e e e e E e e e e e e e AVX 00 Sprung anti vibration supports Select the model using the compatibility table 770 776 782 788 794 801 801 AVX 03 04 Sprung anti vibration supports Select the model using the compatibility table 77 777 783 789 795 802 802 AVX P3 P4 Sprung anti vibration supports Select the model using the compatibility table 772 778 784 790 796 803 8
47. oscopic material able to trap impurities and any traces of humidity in the chiller circuit Sight glass For checking the refrigerating gasload and any humidity in the refrigerating circuit Thermostatic valve The mechanical type valve with outside equaliser on the evaporator outlet modu latesthe gasflow to the evaporatoron the basis of the thermal load in such a way as to ensure the proper degree of overheating ofthe intake gas Taps Present in the liquid and discharge lines and allow to intercept the refrigerant in case of extraordinary maintenance Solenoid valve The valve closes when the compressortums off preventing the flow of refrigerant gas towardsthe evaporator Desuperheater optional 2 perparallel circuit Of the plate type AISI 316 extemally in sulated with closed cell material to reduce thermal dispersion 5 1 FRAME AND FANS Fan unit Screw type statically and dynamically balanced The electric fansare protected electrically with thermomagnetic switches and mechanically with metal anti intrusion grilles in accordance with the standard CEI EN 60335 2 40 Load bearing structure Made of hot galvanised steel sheet of a suita ble thickness vamished with polyester powdersable to resist atmospheric agents overtime 5 2 HYDRAULIC COMPONENTS Circulation pumps versions with pump only or with accumulator Depending on the characteristics of the pump chosen it offers a useful head to ove
48. rcome the pressure drops in the system There is also the possibility to have a reserve pump The reserve pump is managed by the elec tronic card 3 way valve This is an electric servo controlled ON OFF diverting valve on the water side of the freecooling circuit controlled How switch 1 per circ uit installed as stan dard Controls that the water is circulating other wise the unit blocks Water fiter installed as standard Allows you to block and eliminate any im punties in the hydraulic circuits Inside it has a filtering mesh with holes not greater than one millimetre It is essential for avoiding se rious damage to the plate type exchanger Drain valve 1 per circ uit installato di serie Of the automatic type assembled on the upper part of the hydraulic system it relea ses any airbubblesthat may be present in the system Storage tank In stainless steel with a 700 litre capacity In order to reduce the thermal dispersion and eliminate the phenomenon of the formation of condensation it isinsulated with polyurethane material of a suitable thickness One antifreeze electric heater of 300W down to 20 C outside temperature and tank water temperature 5 C assembled asstandard and commanded from the card via an antifreeze sensor inserted in the tank Expansion tank 2 per circ uit 2x25 Lt Of the membrane type with nitrogen pre charge Hydraulic circuit safety valve 1 per circuit Calibrated to 6 baran
49. roduced water up to 6 C 9 Model F Free cooling 10 Heat recovery ig Without recovery units D Desuperheater 11 Version A High efficiency E High efficiency slenced version 12 Coils i Made of aluminium R Made of copper S Tinned copper V Painted aluminium epoxy paint 13 Fans Standard J Inverter 14 Fuel feed 400V 3 50Hz with thermomagnetic switches 2 500V 3 50Hz with thermomagnetic switches 15 16 Accumulation Without water storage Water storage tank and high head single pump Water storage tank with high head pump and reserve pump Without water storage tank with high head pump Without water storage tank with high head pump and reserve pump EGRES INRLPY 11 11 4086926 03 5 CHILLER CIRCUIT Compressors High efficiency scroll type hermetic com pressors assembled on elastic anti vibration supports driven by a 2 pole electric motor with intemal thermal protection of the elec tric heatercasing included asstandard The heater is automatically powered when the unit stops provided that the unit is kept under tension Air side heat exchanger High efficiency device made of copper pipesand aluminium blades locked into place via mechanical pipe expansion Water side heat exchanger Of the plate type AISI 316 extemally in sulated with closed cell material to reduce thermal dispersion Fitted as standard with antifreeze heater Filter drier Of the mechanical cartridge type made of ceramicsand hygr
50. rt SOUND POWER EN ISO 9614 2 SOUND PRESSURE EN ISO 3744 Refrigerant GAS This unit contains fluorinated greenhouse gases covered by the Kyoto Protocol Main tenance and disposal opera tions must be only carried out by qualified staff R410A GWP 1900 The AERMEC NRL units are built accor ding to the recognised standardsand safety regulations They have been designed forair conditioning and production of hot waterand must be used for this purpose in accordance with their performance characteristic s The company shall not be contractual ly ornon contractually liable forany damage to people animals or objects for failures caused by emors during installation adjustment and mainte nance or incorrect use All the uses not expressly indicated in this manual are not allowed 11 CONSERVING THE DOCUMEN TATION Deliverthe following instructions plus all the complementary documenta tion to the system user who shall be responsible for keeping the instructions so that they are alwaysavailable when needed Read carefully this chapter all the procedures must be carried out by qualified personnel according to the regulations in force in the different countries M D 329 2004 It must be installed in such a way asto make all maintenance and or repair operations possible SEE INSTALLER SEC TION page 25 The warranty of the device doesnot in any case covercostsowing to ladder truc ks lifts or other lifting syst
51. stance Working pressure Losstest forthe control of the sealing of the refrigerant circuit Function of high and low pressure switc hes Perform the necessary checkson the filter drierto verify their efficiency 25 6 4 Mechanical controls CONTROL screws compressors and the elec tric box of the unit extemal panelling are properly tightened If they are po ony tightened they produce abnomal noise and vibrations The structure conditions If necessary treat oxidised parts with paints suitable for eliminating or redu cing oxidation 26 EXIRAORDINARY MAINTE NANCE The NRL are loaded with RA10A gasand tested in the factory In normal conditions no Technical Assistance Service operation is needed forthe refrigerant gas check Along time however small leaks from the joints may be generated Due to these lea ks the refrigerant comes out and the circuit is drained causing the unit malfunction In these cases the refrigerant leakage points are found and repaired and the cooling Circuit is recharged operating in complian ce with Law 28 December 1993 no 549 26 6 1 Loading procedure The loading procedure is as follows Empty and dehydrated the entire refrigeration circuit using a vacuum pump connected to the low grip asto the high grip of high pressure till the vacuum gauge reading up to about 10 Pa Wait some minutes and checkthat this value does not goesback again over 50 Pa Connect
52. the operating limits referto dia gram 6 1 valid for At 5 C Operation wih Standard operation ATENTON Sr ol Contact ourtechnical sales depart ment if the unit needsto operated outside the operating limits Wind breaks should be implemented if the unit is installed in particularly windy areas to prevent a malfunction of the DCPX Operation with DERK Se Outside airtemperature d b C Processed watertemperature C 8 2 DESIGN SPECIHCATIONS Side Side COOLING U M High pressure Low pressure Maximum allowable pressure bar 42 29 Maximum allowable temperature C 120 52 Minimum allowable temperature C 16 16 9 CORRECTION FACTORS CORRECTION COEFRHCIENTS OF THE COOLING CAPACITY 9 1 INPUTPOWER AND COOLING 16 20 C CAPACITY HIGH EFHCIENCY VERSION 1 5 25 C 30 C 1 4 35 C 1 3 The refrigerating capacity yielded and the input electrical capacity in conditions otherthan rated conditions are obtained by multiplying the rated values Pf Pa by the respective cor rection coefficients Cf Ca The following diagramsallow you to obtain the correction coefficients to be used forthe various versions of the devi ces in cold mode next to each curve you can see the outside airtemperatu re to which it refers 1 2 1 1 40 C 0 9 44 C 0 8 0 7 Outside air temperature C 0 6
53. the refrigerant gasbomb ora load cylinderto the grip on the low pressure line Charge the amount of refrigerant gasindicated on the characteristics plate of the machine Afterany operation control that the liquid indicator indicates a dry Circuit dry green In case of partial lossthe circuit hasto be emptied completely before reloading it The refrigerant R410A hasto be loaded only in liquid phase Different operating conditions from the nomal can result in different values Leak testing orleaking research must be camed out only by using refrigerant gas R410A by checking with a suitable leak detection It is prohibited to use in the refrige ration circuit oxygen oracetylene orotherflammable or poisonous gas because they can cause explo sions or intoxication EN A machine logbook should ideally be kept not supplied but at the users responsibi lity allowing the operation out on the unit to be tracked and to facilitate the organisation of operations making the troubleshooting and prevention of possible failuresto machine easier The logbook should con tain the type of operation performed routine mainte nance inspection or repair description of the operation measures implemented It is forbidden to CHARGE the cooling circuits with a refrigerant different from the one indicated If a different refrigerant gas is used the compressor may result seriou siy damaged DISPOSAL
54. to calculate the per centage of glycol on the basis of the outside airtemperature you must enter from the left hand axis and once you have intersected the curve trace a vertical line which in tum will intercept all the other curves the points obtained from the upper curvesrepresent the coefficients for the correction of the cooling capacity and input power forthe flow rates and the pressure drops remember that these coef ficients must anyway be multiplied by the nominal value of the sizes examined the lower axis advises the percentage of glycol necessary on the basis of the outside airtem perature considered Ifyou wantto calculate the per centage of glycol on the basis of 18 NRLPY 11 11 4086926 03 2 20 FcGDpF a 210 FcGDpF b 2 00 FcGDpF 1 90 180 FcGDpF d 1 70 1 60 FcGDpF e 1 50 1 40 1 390 1 30 1 10 280 FcGQF 1 20 e FcGG PdC 140 1 090 1 00 FcGPf PdC 0 99 0 990 EE vm 0 97 0 96 0 95 Ge FcGPf 5 5 Ko 10 Yo Outside airtemperature KEY FCGPf Correction factorofthe cooling capacity FcGPa Correction factor of the input power 15 20 30 lycol 40 45 50 55 Processed water temperature FcGDpF a Correction factor of the pressure drops evaporator average temp 3 5 C FcGDpF b Correction fac
55. tor of the pressure drops average temp 0 5 C FcGDpF c Correction factor of the pressure drops average temp 5 5 C FcGDpF d Correction factor of the pressure drops average temp 9 5 C FcGDpF e Correction factor of the pressure drops average temp 47 5 C FCGQF Correction factor of the outputs evaporator average temp 9 5 C FcGQC Correction factor of the outputs condenser average temp 47 5 C NB Although the graph reaches outside air temperatures of 40 C it is necessary to maintain the machi ne s operating limits as reference the temperature of the processed water you must enter from the right hand axis and once you have intersected the curve trace a vertical line which in tum will intercept all the other curves the points obtained from the upper curves represent the coefficients forthe cooling capacity and input power forthe flow ratesand the pressure drops rememberthat these coefficients must anyway be multiplied by the nominal value of the sizes examined the lower axis advisesthe percentage of glycol necessary to produce wateratthe required temperature REM EM BER THAT THE INITIAL SIZES Outside airtemperature AND Processed watertemperature are not directly linked to each other so it is not possible to enter the curve of one of these sizes and obtain the comesponding point on the other curve 13 EXPANSION TANK CALIBRATION The standard pressure value for pre charging t
56. uit that by means of a three wayvalve can activate the free cooling water coil positioned in series with the plate evaporator The water circuit may or may not be supplied with an accumulator assem bly Thanks to several scroll type com pressors and the fan speed control by means of the speed regulator the NRL chillers can obtain various cooling capacity levels both in the compressorsonly mode aswellasthe free cooling mode partial ortotal The electronic adjustment with opti mised microprocessor for free coo ling controlsand managesallthe unit components and operating para meters an intemal memory registers the operating condition as soon as an alarm arises and subsequently di splays it The units have an IP 24 safety level All appliances in the various versons are equipped as standard with fan speed control device evaporator antifreeze heating ele ment compressor casing heater remote control panel water filter flow switch OPERATING MODE FREE COOLING ONLY when the extemal temperature is sufficiently low to allow watercooling inside the free cooling coils at the desired temperature This is the most economical mode of the unit with only the fansoperating in speed modulation MIXED FREE COOLING COMPRES SORS the compressors operate in integra tion with the free cooling when the cooling capacity recovered from the extemal air is no longer sufficient for the power requ
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