NRL_Tecnico (standard-silenziata3)_01_EN.indd
Contents
1. l 1 1 6 4 2 4 6 8 10 Evaporation temperature C 20 C 25 C 30 C 35 C 14 15 Ca VERSION C INPUT POWER CORRECTIVE COEFFICIENTS 1 4 1 35 C Se 10 d a 39 L 25 og L 20 0 8 een 07 0 6 6 4 2 o 2 4 6 8 10 14 15 Evaporation temperature C 20 9 2 HEATING CAPACITY AND INPUT POWER HEAT PUMP VERSIONS The heating capacity efficiency and electrical input power in conditions differing from normal conditions are obtained by multiplying the nominal values Pt Pa by the respective co efficient correctives Ct Ca The following diagram shows how to obtain corrective coefficients the produced hot water temperature to which reference is made is shown in correspondence to each curve assu ming a water temperature difference equal to 5 C between the condenser inlet and outlet The yields are intended net of de fro sting cycles KEY Ct Corrective co efficient of the heating capacity Ca Corrective co efficient of the Input power 9 3 FOR AT DIFFERENT TO THE NOMINAL For At different from 5 C at the eva porator use Tab 9 3 1 to obtain the correction factors of the cooling ca pacity and input power In order to consider ex2. 650 700 500 550 150 300 330 Pressure drops kPa 50 0 10000 20000 Water flow rate 30000 40000 50000 60000 USEFUL STATIC PRESSURE LOW STATIC PRESSURE L H HL 260 240 220 200 180 160 140 120 100 80 60 Pressure drops kPa 40 20 0 5000 10000 15000 e Ne 6 gt 20000 25000 Water flow rate l h 30000 35000 USEFUL STATIC PRESSURE HIGH STATIC PRESSURE L H HL Pressure drops kPa 320 300 280 260 240 220 200 180 160 140 120 100 80 60 40 20 0 gt SNO SyS A 0 5000 10000 15000 20000 25000 Water flow rate 30000 35000 Average water temperature 15 20 30 40 50 Correction factor 1 02 0 985 0 97 0 95 0 93 0 91 22 uL The following tables highlight the principle features of hydraulic circuit components whilst the graph on the
3. 11700 12900 14100 61 1 53 6 65 6 56 4 17030 5 36 0 18230 62 43 1 22190 7 6 48 0 25800 73 55 1 28380 3 8 ELECTRICAL DATA Power supply 400V 3N 50Hz Absorbed current Maximum current Peak current A H HL H 2 5 66 60 71 63 87 76 92 82 108 95 A L 36 33 40 38 44 41 56 50 46 A 53 58 63 72 60 76 75 63 81 91 76 100 232 100 82 112 243 113 95 122 261 COMPRESSORS SCROLL Number circuit Quantity Air flow rate Input power Absorbed current n n HL 2 2 2 2 2 2 2 2 3 2 3 2 4 2 4 2 4 2 H 2 HL 1 1 1 1 HYDRAULIC CONNECTIONS Hydraulic circuit connections IN OUT H E 2 HL 21 2 21 2 27 2 27 2 27 2 21 2 27 2 27 2 HYDRAULIC CIRCUIT Storage tank capacity Storage tank anti freeze resistance LOW STATIC PRESSURE CIRCU Input power Absorbed current Useful static pressures H 300 LATION PUMP 300 300 300 H E E B 30 300 nd 300 500 500 500 500 500 H 300 300 300 300 300 The water connections are all Victaulic type 1 The static pressures available refer to the nominal air flow rate As for the NRL0500 0700 the fans for the M version are inverter type The DCPX accessory is not m
4. 0650 H 83 51 o 200 777 8 08 0700 83 51 65 69 4 707 75 3 780 783 744 0500L HL 77 45 59 64 4 67 0 69 8 71 8 70 7 66 6 0550L HL 7 45 59 65 0 68 4 69 9 71 8 70 5 660 06001 HL 77 45 59 65 1 68 9 70 0 72 0 70 6 66 1 0650L HL 78 46 O 620 709 722 78 07001 HL 78 46 60 65 6 69 1 70 5 723 725 68 0 Values referring to Inlet water temperature gt Temperature of water produced 7 _ External air temperature 35 C 18 CALIBRATION OF CONTROL AND SAFETY PARAMETERS CONTROL PARAMETERS MIN Set Cooling Inlet water temperature in cooling functioning mode MAX DEFAULT MIN Set Healing Inlet water temperature in heating functioning mode MAX DEFAULT Anti freez Intervention temperature of the anti freeze alarm on the EV MAX intervention side water outlet temperature DEFAULT P rtional t ture band within which th MIN Total differential roportional temperature band within which the compressors are MAX activated and deactivated DEFAULT Autostart Auto NRL 0280 0300 0330 0350 0500 0550 0600 0650 0700 400V COMPRESSORS MAGNET CIRCUIT BREAKERS MTC 23A 28A 28A 29A 23A 28A 28A 28A 29A MTCIA 23A 23A 23A 28A 29A MTC2 23A 23A 28A 29A 28A 29A 28A 28A 29A MTC2A 23A 28A 29A HI
5. INDEX 1 1 12 4 1 4 2 4 3 4 4 5 1 5 2 5 3 5 4 5 5 5 6 5J 5 8 5 7 1 7 2 7 3 8 1 82 8 3 9 2 9 3 9 4 0 1 1211 4 1 Dall 5 2 USE IN COMPLIANCE WITH DESTINATION 3 PRESERVATION OF THE DOCUMENTATION 8 NOTES REGARDING THE DOCUMENTATION 3 FUNDAMENTAL SAFETY REGULATIONS 3 PRODUCT IDENTIFICATION tt 8 MODELS AVAILABLE eene 4 VERSIONS AVAILABLE 4 MOTORCONDENSERS CL 224 DESCRIPTION OF THE 4 CONFIGURATOR 5 NRL 0280 0300 0330 0350 6 DESCRIPTION OF THE COMPONENTS s 6 NRL 0500 0550 0600 0650 0700 0005 7 COOLING CIRCUITS HYDRAULIC 1 8 COOLING CIRCUITS HYDRAULIC H HL 9 COOLING CIRCUIT tenente 0 FRAME AND FANS 0 HYDRAULIC COMPONENTS nnn 0 CONTROL AND SAFETYCOMPONENTS 0 ELECTRIC COMPONENTS tnn 1 ACCESSORIES 1 TECHNICAL DATA FOR VERSIONS 1 3 TECHNICAL eee 13 TECHNICAL DATA FOR VERSIONS H 15 TECHNICAL DATA FOR VERSIONS C 47 OPERATIONAL LIMITS 8 COOLING MODE FUNCTIONING 8 HEATING MODE FUNCTIONING
6. The drawings shown are only an example KEY 1 Plate heat exchanger 11 Compressors 2 Storage tank 12 Storage tank draining 3 Expansion vessel 13 Desuperheater 4 Pumps 14 Mounted filter 5 Loading unit 15 Cyclereversing valves 6 Safety valve 16 Liquid storage tank 7 Vent valve 17__ Thermostatic valves 8 Coil 18 Dehydraior filter 9 Fans 19 Liquid separator 10 Electric Control Board 20 Electric resistance NRL 0500 0550 0600 0650 0700 5 2 Wn The drawings shown are only an example NOTE KEY zl 929 o 5 SS 9 o O gt 5 8 7l oa o S 5 olc 0 s S 215 1 s sS 215 519 2195 50 olo QO Qe o gt E S p E 5 5 5 5 O o F e T o S 5 a 7 lt P 2 gt t t 520 o gt gt G gt 8 S gt 5 5 5 5 2 9 SS x 5 lo gt O 5 3 COOLING CIRCUITS HYDRAULIC L VSIC Aq RU X loading 26 QE Electric Control Board FM i Water fiter i i i i i VE Expansion vessel Hectic cable Ball valve VSA Water safety valve TGP pressing line gas circuit
7. e 8 MOTORCONDENSING FUNCTIONING aa 8 COOLING CAPACITY AND INPUT POWER 9 CORRECTIVE COEFFICIENTS aaa 9 HEATING CAPACITY AND INPUT 20 FOR AT DIFFERENT TO THE NOMINAL 20 DEPOSIT FACTORS 20 HOW TO INTERPRET GLYCOL 21 ETHYLENE GLYCOL SOLUTION aaa 21 TOTAL PRESSURE DROPS 22 PRESSURE DROPS 22 MINIMUM MAXIMUM WATER CONTENT IN THE SYSTEM nen 23 STORAGE TANK 23 CAPACIIY CONTROL 2424 PRESSURE DROPS 25 DESUPERHEATER 25 T eee 26 PRESSURE DROPS 26 TOTAL RECOVERY teen 26 DIMENSIONEMENT COOLING LINES VERSION C 27 17 18 SOUND DATA CALIBRATION OF CONTROL AND SAFETY PARAMETERS 29 For the installation of the appliance please comply with the safety rules and regulations contained in these instructions Moving parts hazard High temperature hazard Voltage hazard Danger Disconnect voltage Generic danger Useful information and notices AERMEC S p A 37040 Bevilacqua VR Italy Via Roma 996 Tel 39 0442 633111 Sor Telefax 0442 93730 39 0442 93566 air conditioning Www Qermec com info aermec com SERIAL NUMBER EC DECLARATION OF CONFORMITY We the und
8. 12 STORAGE TANK 12 following page shows relative static pressures 12 1 MINIMUM MAXIMUM WATER CONTENT IN THE SYSTEM 12 1 1 Recommended maximum water content Table 12 2 indicates maximum water content in litres of hydraulic plant compatible with expansion vessel capacity supplied as standard FOR VERSIONS WITH STORAGE TANK OR JUST WITH PUMP The values shown in The table refer to three maximum and minimum water temperature condi tions If the effective water content of the hydraulic system including stora ge tank is greater than that shown in the table whist active an additional expansion vessel is required Use usual criteria referring to volume of added water to determine size required From tables 12 3 it is possible to obtain the maximum content values for the system also for glycoled water fun ctioning conditions Values are worked out by multiplying the referred value by the corrective co efficient 12 1 2 Expansion vessel calibra tion The standard pre load pressure va lue of the expansion vessel is 1 5 bar while their volume is 24 litres The ma ximum value is 6 bar Vessel calibration must be regulated using the maximum level difference H of the user see diagram by using the following formula p calibration bar H m 10 2 0 3 For example if level difference H is equal to 20m the calibration value of the vessel will be 2 3 bar If the calibration value obt
9. It is prohibited to disperse or aban don the packing materials and they must be kept out of the reach of children as they are a potential source of danger 3 PRODUCT IDENTIFICATION Packing label the product Technical plate ber of the electric box NOTE NRL can be identified by means of that reports the identification data of positioned on the lateral cross mem Tampering removal lack of the iden tification plate or other does not allow safe identification of the product and will make any installation or mainte nance operation to be performed dif ficult PLATE PLATE PACKING LABEL Standards and directi ves 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 compati bility directive EMC 2004 108 EC Pressure containers direc tive 978 UNI EN 14276 Electrical part EN 60204 1 Protection rating IP24 Acoustic part SOUND POWER EN ISO 9614 2 SOUND PRESSURE EN ISO 3744 Certifications Eurovent Refrigerant GAS This unit contains fluorinated greenhouse gases covered by th
10. C FCGDpF Correction factors of pressure drops av temp 47 5 C FCGQF Correction factor of flow rates evap av temp 9 5 C Correction factors of flow rates condenser av temp 47 5 NOTE Although the graph reaches an external air temperature of 40 C unit operational limits must be considered perature of water produced en ter from the right axis of the graph and once the curve is intercepted draw a vertical line which in turn will intercept all the remaining curves the points obtained from the upper curves represent the co efficients for cooling capacity and input power for flow rates and pressure drops remember that These co efficients still need to be multiplied by the nominal value of the size in question whilst the lower axis recommends the glycol percentage value necessary for producing water at the desired temperature Remember thoat The initial measurements EXTER NAL AIR TEMPERATURE and PRO DUCED WATER TEMPERATURE are not directly linked to each other therefore it will not be possible to enter the curve of one of these measurements and obtain the corresponding point on the other Curve 21 11 1 TOTAL PRESSURE DROPS Standard cooling only NRL L and standard heat pump H HL NOTE The pressure drops and useful static pressures are calculated in cooling mode with water at 10 C 11 PRESSURE DROPS TOTAL PRESSURE DROPS 9 1 250
11. CP Compressor Pes ER witch iWetertank i SF Venting BAT RT FD VT E PP uu BP eee gt ee Cock bends i Thermostatic valve Heat exchanger i Pressure point High pressure transdu Low pressure switch GR RU Cock GR SD probe RE electric resistance JUNK Non retum valve us P MN Filling unit _ SD probe RE Electric resistance 52 P Pump ling unit ee EQ SIW High pressure pressure switch Solenoid valve Liquid indicator Equaliser control valve Inlet water temperature probe Outlet water temperature probe 5 4 COOLING CIRCUITS HYDRAULIC H HL TGP RCS Electric Control Board V Expansion vessel Electric cable One way VT _ storage tank Compressor PP Water safety valve Pressing line gas circuit Vse W i i Venting _toad drain cock Water filter BAT SC TAP VSA E loading pem gt ee Cock Dehydrator filter Thermostatic valve 50 Anicieeze probe RE electric resistance Non return valve NR I Heat exchanger Cock Pressure point i High pressure transdu
12. Safety valve zn LOW pressure swlich Drain cock 1 499 separator J E _ Electric resistance 6 Non return valve Pump g unit Cycle reversing valve NS IDL EQ BVT SIW AP TBP ON Solenoid valve Liquid indicator Equaliser Jepperature control valve water temperature probe Outlet water temperature probe pressure pressure switch Low pressure transducer Flow switch 10 5 5 COOLING CIRCUIT Compressors Highly efficient hermetic scroll compres sors on anti vibration mounts activated by 2 pole electric motor with internal circuit breaker protection supplied as per stand ard with sump resistance The resistance is powered automatically when the unit stops as long as the unit is live Air side heat exchanger High efficiency realised with copper pipes and aluminium louvers blocked by me chanical expansion of the pipes Water side heat exchanger Plate type aisi 316 insulated externally with closed cell material to reduce heat loss Equipped as per standard with the anti freeze electric resistance Liquid separator for heat pump only Positioned on compressor intake for pro tection against any return of refrigerant fluid flooded start up and functioning in the presence of liquids Liquid storage tank for heat pumps and total recovery only Compensates the difference in volume between louvers coil and
13. Units with Total Recovery T do not envision the following versions NI only for temperature under 4 C 15 TOTAL RECOVERY RECOVERED HEATING CAPACITY CORRECTIVE CO EFFICIENTS 35 C 40 C 45 C 50 C 55 C Cr 10 13 Temperature of the water produced C INPUT POWER WITH RECOVERY CORRECTIVE CO EFFICIENTS 12 T 55 C 0 9 Ca 0 8 0 7 5 6 7 8 9 10 11 12 13 14 15 16 Temperature of the water produced C 18 151 NRL T 0280 0300 0330 0350 0500 0550 0600 0650 0700 Recovered heating capacity kW 72 84 92 107 127 136 167 185 210 Total input power kW 19 7 22 0 25 5 27 5 31 8 35 2 42 9 50 9 57 0 Recovery water flow rate Vh 12340 14430 15860 18430 21880 23470 28680 31880 36150 Heat exchanger recovery pressure drop kPa 27 36 45 22 31 37 52 45 24 15 2 PRESSURE DROPS The NRL models with total recovery always have 1 recuperator The features of the recuperators and the pressure drop curves are given below filter losses are not conside red The pressure drops in the diagram ar
14. content Minimum water content in the case of process applications or applica tions with low outside temperatures and low load Regolation on the temperature out let water project At less than 5 C 23 24 13 CAPACITY CONTROL Cooling capacity Versions NRLO280 NRLO300 NRLO330 NRLO350 NRLO500 NRLO550 NRLO600 NRLO650 NRLO700 Levels of power Input power Versions NRLO280 NRLO300 NRLO330 NRLO350 NRLO500 NRLO550 NRLO600 NRLO650 NRLO700 Heating capacity o Levels of power Versions NRLO280 NRLO300 NRLO330 NRLO350 NRLO500 NRLO550 NRLO600 NRLO650 NRLO700 Input power Versions NRLO280 NRLO300 NRLO330 NRLO350 NRLO500 NRLO550 NRLO600 NRLO650 NRLO700 The performance levels refer to the following condi The performance levels refer to the following condi lions lions E processed water temperature 7 C processed water temperature 50 C outside air temperature 35 C outside air temperature 7 C B S 6 C B U The heating capacity that can be obtained from the desuperheater is found by multiplying the nominal value Pd shown in figure 14 1 1 by a relative co efficient Cd The following diagrams allow to obtain corrective co efficients to use for chillers in th
15. main tenance interventions to prevent the machine being powered up acciden tally Control board Allows the complete control of the appli ance For a more in depth description please refer to the user manual Remote control panel Allows to control the chiller at a distance Compressors magnet circuit breaker protec tion Fans magnet circuit breaker protection Auxiliary magnet circuit breaker protection Exhaust gas temperature control thermostat ELECTRONIC ADJUSTMENT Microprocessor board Made up from management and con trol board and display board Functions performed evaporator inlet water temperature adjustment with thermostating up to 4 steps and proportional control integral on fan speed with DCPX accessory delayed start up of compressors compressors rotation sequence compressors functioning hours count start stop reset alarms permanent memory autostart after voltage drop multi language messages functioning with local or remote con trol 6 ACCESSORIES machine status display compressors ON OFF alarms summary alarms management high pressure flow switch low pressure anti freeze compressors overload fans overload pumps overload display of the following parameters inlet water temperature outlet water temperature Storage tank temperature Outlet water tem perature delta T high pressure low pressure re start stand by time al
16. on the microprocessor board display one per circuit Placed on the low pressure side of the cooling circuit it inhibits functioning of the compressor if abnormal work pressures occur x2 x2 x2 x2 x2 x2 x2 x2 x2 2254 EE mee et S E s c i per 195 per i per standard standard standard standard iuda uad Sue It allows to view the value of the compressor flow pressure on the microprocessor board display per circuit Placed on the high pressure side of the cooling circuit it inhibits functioning of the compressor if abnormal work pressures occur x2 x2 x2 x2 as per as per as per as per as per standard standard standard standard standard os per as per as per as per standard standard standard standard Current rephaser Connected in parallel to the motor it allows a reduction of the absorbed current It can only be installed in the machine construction phase and so must be requested on ordering he machine during start up phase accessory applicable only in the fa This accessory allows correct functioning with external temperatures lower than 10 C and to 10 C It is made up from an adjustment circuit board that varies the number of fan revs on the basis of condensation pressure read by the high pressure transducer in order to keep it high enough for correct unit f
17. 0 HIGH STATIC PRESSURE CIRCULATION PUMP Input power Absorbed current OUND DATA Sound power 1 Sound Pressure 2 Empty weight REFERENCE NOMINAL CONDITIONS IN COOLING MODE 1 SOUND POWER 2 SOUND PRESSURE Inlet water temperature 12 C Aermec determines sound power values Sound pressure measured in free field condi Outlet water temperature 7 C in agreement with the 9614 2 Standard in tions with reflective surface directivity factor External air temperature 35 C compliance with that requested by Eurovent 9 2 at 10mt distance from external surface of At 5 certification unit in compliance with ISO 3744 regulations 7 2 TECHNICAL DATA FOR VERSIONS H HL COOLING 280 300 330 30 soo 50 so 700 90 95 115 134 145 Cooling capacity 83 90 110 124 140 Total input power Water flow rate Wh H s 2 15480 16340 19780 23050 24940 L 8770 10490 11350 12560 14280 15480 18920 21330 24080 H 46 50 53 58 64 Total pressure drops kPa HL 4 4 5 4 39 45 79 50 HEATING H Heating capacity kW HL 58 28 75 82 99 106 129 150 165 33 2 5 Total input power Water flow rate Total pressure drops ENERGETIC INDEX kw B i i HL 51 61 66 73 kw z 364 40 5 53 3 22 5 26 2 31 0 39 7 42 9 58 3 H H 20 1 H H HL H HL 9980 kW
18. 6 1 28 4 38 5 57 6 64 8 Water flow rate 16680 17720 21670 23560 26830 9120 10840 11700 13930 14960 16000 19440 21840 24770 53 59 64 61 74 51 46 5 55 43 48 51 52 63 Total input power o Total pressure drops kPa L ENERGETIC INDEX 2 6 2 79 2 6 2 85 ELECTRICAL DATA 400V 3N 50 N pog Power supply Absorbed current m NIO JN o N Maximum current Peak current COMPRESSORS SCROLL Number circuit n n L 2 2 2 2 2 2 2 2 3 2 3 2 4 2 4 2 4 2 FANS AXIAL Quantity r o Air low rate Input power Absorbed current ofr o Useful static pressures 1 SEN ao on on re CLA CN E HYDRAULIC CIRCUIT Storage tank capacity 300 300 300 300 500 500 500 500 500 Storage tank anti freeze 300 300 300 300 300 resistance L W L 30 a0 30 300 LOW STATIC PRESSURE CIRCULATION PUMP Input power Absorbed current f 123 91 83 91 pressures I 106 96 89 141 130 117 103 117 The water connections are all Victaulic type o L o L o 1 The static pressures available refer to the nominal air flow rate 13 1 0280 0300 0330 0350 0500 0550 0650 070
19. AERMEC air conditioning 20309 CHILLERS AND AIR WATER HEAT PUMPS TECHNICAL MANUAL COOLER AIR WATER INDOOR UNIT STANDARD EFFICIENT N R L 2 80 f OQ FOR OUTDOOR INSTALLATIONS STANDARD VERSIONS RUNNING standard AERMEC Sy COMPANY QUALITY SYSTEM px a 2 O V E IM T m 5 N CERTIFIED PERFORMANCE ICIM www eurovent certification cornm ISO 9001 2000 Cert n 0128 5 eC 817320385 0 1 90 E K3Net AERMEC 5 Dear Customer Thank you for choosing an AERMEC product This product is the result of many years of experience and in depth engineering research and it is built using top quality materials and advanced technologies In addition the CE mark guarantees that our appliances fully comply with the requirements of the European Machinery Directive in terms of safety We constantly monitor the quality level of our products and as a result AERMEC products are synonymous with Safety Quality and Reliability Product data may be subject to modifications deemed necessary for improving the product without the obligation to give prior notice Thank you again AERMEC S p A AERMEC S p A reserves the right at any moment to make any modifications considered necessary to improve our products and is not obliged to add these modifications to machines that have already been manufactured delivered or are under construction
20. E HEAT RECUPERATORS with desuperheater inserted in series D ATTENTION In heat pump models the desuper heater must be shut off in heat pump mode or the warranty will be come void Total heat recovery T With plate heat exchanger inserted in parallel with the coils Both of these versions D T have Hot gas by pass device upstream from the evaporator Water filter before the recovery heat exchanger Units with Desuperheater D or Total Recovery T do not envision the following versions YD YI XT only for temperature under 4 C only for temperature under 4 C 4 3 SILENCED MOTORCONDENSERS CL The NRL C motorcondensers do not envi sion the following versions HC motorcondencing heat pump motorcondensing with total recovery DC motorcondensing with storage tank Mechanical thermostatic valve version Y it is the version that allows to produce cooled water below the standard value of 4 C to a mini mum of 6 C Contact the head of fice for lower values 4 4 CONFIGURATOR 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 NRL 028 o o o o o o o o 00 Campo 1 2 3 Code NRL 4 5 6 7 Size 0280 0300 0330 0350 0500 0550 0600 0650 0700 8 Thermostatic valve 9 Standard mechanical thermostatic valve Y Low water temperature mechanical thermostatic valve to 6 C X Electronic thermostatic valve also for low w
21. GH PRESSURE PRESSURE SWITCH MANUAL REARM PA bar 40 40 40 40 40 40 40 40 40 HIGH PRESSURE TRANSDUCER TAP bar 39 39 39 39 39 39 39 39 39 LOW PRESSURE TRANSDUCER TBP bar 2 2 2 2 2 2 2 2 2 COOLING CIRCUIT SAFETY VALVES AP bar 45 45 45 45 45 45 45 45 45 BP bar solo in pompa di calore 30 30 30 30 30 30 30 30 30 FANS MAGNET CIRCUIT BREAKERS N ventilatori N ventilatori L N ventilatori H N ventilatori HL 29 AERMEC S p A p A AERM 37040 Bevilacqua VR Italy Via Roma 996 carta reciclata MENT Tel 39 0442 633111 recycled paper AERMEC Telerox 0442 93566 papier recycl COMPANY QUALITY SYSTEM Cu air conditioning www aermec com infoGaermec com recycled papier AY AS 150 9001 2000 Cert n 0128 5 modifications considered necessary for improving the product at any time AERMEC S P A cisQ Ee The technical data in the following documentation are not binding Aermec reserves the right to make all the C C bw
22. ITEN Provide oil traps on suction pipe to allow the oil back to the com pressor when the evaporating unit is at a lower level than the condensing one The total leng th of the piping between the two units is measured in respect of the length of the liquid line Contact Aermec in case of additional in formation needed EVAPORATORE EVAPORATOR EVAPORATEUR VERDAMPFER 27 17 SOUND DATA Sound power Total sound levels Octave band Hz Aermec determines sound power values Pow Pressure 125 250 500 1000 2000 4000 8000 in agreement with the 9614 2 Standard in dB A dB A dB A Sound potential for centre of band dB frequency compliance with that requested by Euro lOm 1 A vent certification 0280L 03001 Sound Pressure 0330L Sound pressure measured in free field 0350L conditions with reflective surface direc 0280HL tivity factor Q 2 in compliance with ISO 0300HL 3744 regulations 0330HL 0350HL NOTE The data refer to the version with Total level i standard fans otal sound levels Octave band Hz NRL Pow Pressure 125 250 500 1000 2000 4000 dB A dB A dB A Sound potential for centre of band dB fre 10m 1m cy A 0500 H 82 50 64 68 1 69 8 740 767 76 5 74 1 0550 H 82 50 64 G2 oO 765 720 0600 H 82 50 64 68 9 71 4 74 8 77 7 76 4 72 0
23. ME AND FANS Ventilation Unit Helical type balanced statically and dy namically The electric fans are protected electrically by magnet circuit breakers and mechanically by metal anti intrusion grids according to the IEC EN 60335 2 40 Standard Larger fans M Support frame Made in hot galvanised sheet steel with suitable thickness and painted with poly ester powders able to resist atmospheric agents through time 5 7 HYDRAULIC COMPONENTS Circulation pump Depending on the features of the pump selected it offers a static pressure that is useful for beating system pressure drops The possibility of a reserve pump is also envisioned The reserve pump is managed by the cir cuit board Flow switch installed as per standard It checks that there is circulation of water If this is not the case it blocks the unit Water filter installed as per standard This allows to block and eliminate any im purities present in the hydraulic circuits It contains a filtering mesh with holes that do not exceed one millimetre It is indis pensable in order to prevent serious dam age to the plate exchanger Storage tank In sheet steel with capacity of 300 litres In order to reduce heat loss and eliminate the condensate formation phenomenon it is insulated using polyurethane material with a suitable thickness As per standard it has a 300W anti freeze electric resistance to 20 C external tem perature tank water temper
24. Placed on high pressure side of cooling circuit it signals the work pressure to con trol board generating a pre warning if abnormal pressure occurs Anti freeze electric resistance installed as per standard ts functioning is controlled by the anti reeze probe positioned in the plate evap orator Activation takes place when the emperature of the water is 3 C while it is disconnected with water temperature of 5 The dedicated software housed in the adjustment board manages the electric resistance Cooling circuit safety valve ntervenes by discharging the overpres sure in the case of abnormal pressures Calibrated at 45 bar on the HP branch Calibrated at 30 bar on the LP branch only for heat pump 5 9 ELECTRIC COMPONENTS Electric Control Board Contains the power section and the man agement of controls and safety devices t is in compliance with the following Standards EC EN 61000 6 1 EC EN 61000 6 3 electromagnetic immu nity and emission for residential environ ments EC EN 61000 6 2 EC EN 61000 6 4 electromagnetic immuni ty and emission for industrial environments With the Directives regarding electromag netic compatibility EMC 89 336 CEE and 92 31 CEE and LVD 2006 95 CE Door lock isolating switch The electric control board can be accessed by removing the voltage Act on the opening lever of the con trol board itself This lever can be locked using one or more padlocks during
25. Y the appliance must be installed by quali fied and suitably prepared staff in compliance with the national legisla tion effective in the country of desti nation The appliance must be installed so that maintenance and or repairs can be carried out The appliance war ranty does not cover the costs for lad ders scaffolding or other elevation systems that may become necessary for carrying out servicing under war ranty The validity of the warranty shall be void in the event of failure to comply with the above mentioned indi cations 2 FUNDAMENTAL SAFETY REGULATIONS Itis prohibited to carry out any tech nical or maintenance operation before the unit has been discon nected from the electrical mains by switching off the master switch of the system and the main power switch on the control panel Itis prohibited to modify the safety or adjustment devices without the manufacturer s authorisation and precise instructions Itis prohibited to pull disconnect or twist the electrical cables coming from the unit even if disconnected from the electrical mains It is prohibited to leave containers and flammable substances near to the unit It is prohibited to touch the appli ance when you are barefoot and with parts of the body that are wet or damp It is prohibited to open the ac cess hatches to the internal parts of the appliance without first hav ing switched off the system master switch
26. ained from the calculation is less than 1 5 bar i e for H 12 25 keep standard calibra tion MINIMUM WATER CONTENT 0280 0300 0330 0350 0600 0650 Hydraulic height H m 30 25 20 15 12 25 Calibration of the expansion vessel bor 32 2 8 2 3 1 8 1 5 Water content reference value 2174 2 646 3 118 3590 3852 Water content reference value 2 978 1190 1404 1616 1732 Water content reference value 3 510 622 752 844 904 12 3 cen Water femp C Seems ions max min 10 40 2 0 507 1 10 60 2 0 686 2 10 85 2 0 809 3 20 40 6 0 434 1 20 60 6 0 604 2 20 85 6 0 729 3 35 40 6 325 1 35 60 6 0 555 2 35 85 6 0 677 3 Reference operational conditions 1 Cooling Max water temp 40 C min water temp 4 C 2 Heating heat pump Max water temp 60 C min water temp 4 C 3 Heating boiler Max water temp 85 C min water temp 4 1 55 H 10 2 0 3 Ptar H 12 25m 1 5 bar Ptar 1 5 bar Ptar 2 1 Check that highest installation does not exceed a height differen ce of 55 metres 2 Ensure that lowest installation can withstand global pressure in that position 0500 0550 1 KW Minimum water
27. arms display set settings a without password set cooling total differential b with password set anti freeze low pressure exclusion time display language access code For further information please refer to user manual 0280 030 0330 050 050 050 0650 0700 AER485 MODBUS protocol This accessory allows the connection of the unit with BMS supervision systems with RS 485 electrical standard and Protects the external coil from blows and ing circuit are housed Every kit includes two grids and to have differentiated programming f Board to couple onto the unit circuit board Allows to program two time day of the week prevents access to the area below where the compressors and cool periods per day two switch on off cycles 0280 0300 0330 0350 050 0550 00 070 The AERWEB device allows theremote control of a chiller from a common PCby means of a serial connection By using addi tional modules the device allows control of thechiller by telephone network using the AER MODEM accessory or GSM network usingthe AERMODEMGSM The AERWEB can pilotup to 9 chillers each of which must be equip ped with the AER485 or AER485P2 accessory AERWEB30 It allows to view the value of the compressor intake pressure
28. at the desuperheater 10 45 50 C At 5 0 o 5000 10000 15000 20000 Units with Desuperheater D do not Water flow rate envision the following versions YD XD only for temperature under 4 C 14 1 1 NRL D 0280 0300 0330 0350 0500 0550 0600 0650 0700 Recovered heating capacity kW 20 5 22 9 25 3 31 3 36 1 38 1 44 9 543 59 8 Desuperheater water flow rate I h 3520 3940 4350 5380 6210 6550 7710 9340 10290 Desuperheater pressure drop kPa 10 13 16 9 12 14 18 14 17 14 1 2 Average water temperature C 30 40 50 60 70 Multiplicative co efficients 1 04 1 02 1 0 98 0 9 25 26 In the case of functioning with total heat recovery machine performan ce does not depend on the exter nal air temperature but on that of the hot water produced the elec tric input power and the recovery heating capacity are obtained by multiplying the values Pa Pr given in table 15 1 by the respective correcti ve co efficients Ca Cr deductible from the following diagrams The temperature of the hot water produced is given in correspondence with each curve to which reference is made assuming a difference of 5 C between inlet and outlet from the total recuperator The cooling capacity Pf is obtained from the distance between the reco very heating capacity Pr and input power Pa Nominal value referring to Air temperature 35 C Water at the desuperheater 50 C At 5 C
29. ater temperature to 6 C 9 Model 9 Cooling Only Motorcondensing H Heat Pump 10 Heat recovery 9 Without recuperators D Desuperheater T Total recovery 11 Version i Standard Cooling Only L Compact silenced 12 Coils 9 In aluminium R In copper S Tinned copper V Painted 13 Fans 9 Standard M Larger 14 Power supply M 400V 3N 50Hz with magnet circuit breakers 1 220V 3 50Hz with magnet circuit breakers 15 16 Storage tank 00 Without hydronic storage tank 01 Low static pressure storage tank and single pump 02 Low static pressure storage tank and reserve pump 03 High static pressure storage tank and single pump 04 High static pressure storage tank and reserve pump 05 Storage tank with holes for int res low static pressure and single pump 06 Storage tank with holes for int res low static pressure and reserve pump 07 Storage tank with holes for int res high static pressure and single pump 08 Storage tank with holes for int res high static pressure and reserve pump 09 Double water ring 10 Double water ring with integrated resistance P1 Without storage tank with low static pressure P2 Without storage tank with low static pressure pump and reserve pump P3 Without storage tank with high static pressure P4 Without storage tank with high static pressure pump and reserve pump 1 Available only for 0280 0300 0330 0600 0650 5 DESCRIPTION OF THE COMPONENTS 5 1 NRL 0280 0300 0330 0350
30. ations These appliances are designed and built for heating and hot water pro duction and also for cooling and must be used in compatibility with their technical features In spite of this dangers to the user or third parties may arise as well as damage to the appliance and other objects in the event of improper use and use that is not in compliance with that envi sioned Any use not expressly indicated in We remind you that the use of prod ucts that employ electrical energy and water requires that a number of essential safety rules be followed such as This appliance is not suitable for use by persons including children with limited physical sensory or mental capacities or those lacking experi ence or know how unless they are supervised or instructed regard ing the use of the appliance by a person who is responsible for their safety Children must always be su pervised to ensure they do not play with the appliance 1 NOTES REGARDING THE DOCUMENTATION this manual is not permitted Conse quently AERMEC will not assume any responsibility for damage that may occur due to failure to comply with these instructions 1 2 PRESERVATION OF THE DOCUMENTATION The installation instructions along with all the related documentation must be given to the user of the sys tem who assumes the responsibility of keeping the instructions so that they are always at hand in case of need READ THIS DOCUMENT CAREFULL
31. ature 5 C controlled by the board using an anti freeze probe inserted into the tank Vent valve all versions Automatic mounted on the upper part of the hydraulic plant it discharges any air pockets present in the same Filling unit versions with storage tank It is equipped with a manometer for the display of system pressure Expansion vessel versions with storage tank with nitrogen pre load membrane Hydraulic circuit safety valve only in versions with storage tank or with pump Calibrated at 6 Bar and with piped dis charge which intervenes by discharging overpressure if abnormal work pressures occur 5 8 CONTROL AND SAFETY COMPONENTS Low pressure pressure switch LP Cooling only L With fixed calibration placed on low pres sure side of cooling circuit it inhibits func tioning of compressor if abnormal work pressure occurs High pressure pressure switch AP Cooling only L Heat pump HL With fixed calibration placed on high pressure side of cooling circuit it inhibits functioning of compressor if abnormal work pressure occurs Low pressure transducers TP2 Cooling only L accessory Heat pump HL as per standard Placed on high pressure side of cooling circuit it signals the work pressure to con trol board generating a pre warning if abnormal pressure occurs High pressure transducer TP3 Cooling only L accessory Heat pump HL as per standard
32. changer dirtying use the relative dirtying factors Tab 9 4 1 9 4 DEPOSIT FACTORS The performances shown by the table refer to clean tubes with deposit fac tor 1 For different deposit factor values multiply the data in the performance tables by the co efficients given 1 4 HEATING CAPACITY CORRECTIVE CO EFFICIENTS 13 1 2 11 4 P 0 9 Ct 0 8 0 7 0 6 15 12 9 6 3 0 3 6 9 12 15 External air temperature C 18 21 24 27 30 INPUT POWER IN HEATING MODE CORRECTIVE CO EFFICIENTS 1 3 m 2 gt A E CE T s em Ca in heating mode o to 0 8 0 7 15 12 9 5 3 0 3 6 9 1 2 15 External air temperature C 18 21 24 27 30 9 3 1 Corrective factors at At different from the Chiller nominal 3 5 8 10 Cooling capacity correction factors 0 99 1 02 1 03 Input power correction factors 0 99 1 01 1 02 9 4 1 Deposit factors k m2 W 0 00005 0 0001 0 0002 Cooling capacity correction fac 1 0 98 094 tors Input power correction factors 1 0 98 0 95 The correction factors of cooling capacity and input po
33. e Kyoto Protocol Maintenance and disposal operations must be only carried out by qualified staff R410A GWP 1900 4 1 4 2 4 DESCRIPTION OF THE UNIT The appliances in the NRL series are units used for the production of cold water for technological systems The heat pump models also allow to pro duce hot water for heating They are made up of two R410A cooling cir cuits and a unique hydraulic circuit which may or may not be supplied with storage or pumping unit The presence of several scroll compres sors allows NRL chillers various par tialisations of the cooling capac ity The electronic adjustment with microprocessor controls and man ages all components and function ing parameters An internal memory records the functioning conditions when an alarm occurs in order to show it on the display The units have an IP 24 protection rating MODELS AVAILABLE COOLING ONLY o L maximum external temperature ac cepted 42 C temperature water product 18 C HEAT PUMP H HL in cooling mode the operational limits reach a maximum external air tem perature of 42 C temperature water product 18 C in heating mode the operational limits reach a maximum external air temperature of 42 C temperature water product 50 C NRLH does not envision the following configurations YH with water produced lower than 4 C HC motorcondencing heat pump VERSIONS AVAILABLE RECUPERATORI DI CALOR
34. e relative to an average tempera ture of 50 C Table 15 2 1 shows the corrections to apply to pressure drops on variation of the average water temperature TOTAL RECOVERY PRESSURE DROPS 140 650 120 980 300 330 Q O 350 500 550 d o D Pressure drop kPa 20 222 0 0000 20000 30000 40000 50000 Water flow rate h 60000 70000 80000 15 2 1 Pressure drop corrections on variation of the average water temperature Average water temperature C 30 40 50 Multiplicative co efficients 1 04 1 02 1 16 DIMENSIONEMENT COOLING LINES VERSION C COOLING LINES R410A R410A refrigerant refrigerant Line Intake line f mm Liquid line f mm per metre of per metre of length m line g m line g m NRLO280C NRLO300C NRLO330C NRLO350C NRLO500C NRLO550C NRLO600C NRLO650C 0 10 42 42 28 28 660 660 10700 10 20 42 42 28 28 660 660 20 30 42 42 28 28 660 660 Cooling circuit 1 C2 Cooling circuit 2 UNITA CONDENSANTE CONDENSING UNIT UNITES DE CONDENSATION KONDENSATOREINHE
35. eant fort his version as the fans are already equipped with the fan speed regulation 15 16 1 280 300 330 350 500 550 400 650 700 HIGH STATIC PRESSURE CIRCULATION PUMP HIGH STATIC PRESSURE CIRCULATION PUMP Input power Absorbed current Useful static pressures SOUND DATA Sound power 1 Sound Pressure 2 Empty weight REFERENCE NOMINAL CONDITIONS IN COOLING MODE Inlet water temperature 12 Outlet water temperature 7 C External air temperature 35 C At 5 IN HEAT MODE Inlet water temperature Outlet water temperature External air temperature At 40 C 45 C 7 6 C 5 1 SOUND POWER Aermec determines sound power values in agreement with the 9614 2 Standard in compliance with that requested by Eurovent certification 2 SOUND PRESSURE Sound pressure measured in free field con ditions with reflective surface directivity factor Q 2 at 10mt distance from external surface of unit in compliance with ISO 3744 regulations 7 3 TECHNICAL DATA FOR VERSIONS C DATI ELETTRICI RAFFREDD Power supply Cooling absorbed cur rent Maximum current FLA Peak current LRA FANS AXIAL Quantity SOUND DATA Sound power 1 Sound Pressure 2 Empty weight REFERENCE NOMINAL CONDITIONS IN COOLING MODE External air temperat
36. eir various versions external air temperature to which reference is made is shown in corre spondence to each curve In heat pump models the desuperhe ater must be shut off in heat pump mode or the warranty will be come void 14 1 PRESSURE DROPS The NRL models with desuperheater have 2 desuperheaters for all sizes 14 DESUPERHEATER 3 00 DESUPERHEATER CORRECTIVE CO EFFICIENTS m a o m o o i o 45 40 Corrective co efficients Cd a o 35 C 30 C 20 C 25 C 0 00 35 40 45 50 55 Temperature of water produced at the desuperheater At 5 C 60 65 DESUPERHEATER PRESSURE DROPS positioned in parallel E Desuperheater features and pressure 350 500 550 800 drop curves are shown below e 2 501995 I For temperature values of produced a water different from 50 C multiply o a the result by the corrective factor shown in figure 14 1 2 sa N Nominal value referring to 5 Air temperature 35 C Water
37. ersigned hereby declare under our own responsibility that the assembly in question defined as follows NAME NRL TYPE AIR WATER HEAT PUMPCHILLER MODEL To which this declaration refers complies with the following harmonised standards CEI EN 60335 2 40 Safety standard regarding electrical heat pumps air conditioners and dehumidifiers CEI EN 61000 6 1 CEI EN 61000 6 3 CEI EN 61000 6 2 CEI EN 61000 6 4 EN378 Refrigerating systems and heat pumps Safety and environmental requirements Immunity and electromagnetic emissions for residential environments Immunity and electromagnetic emissions for industrial environments UNI EN 12735 Seamless round copper tubes for air conditioning and refrigeration UNI EN 14276 Pressure equipment for cooling systems and heat pumps Therefore complying with the essential requirements of the following directives LVD Directive 2006 95 CE Electromagnetic compatibility Directive2004 108 CE Machinery Directive 98 37 CE PED Directive regarding pressurised devices 97 23 CE The product in agreement with Directive 97 23 CE satisfies the Total quality Guarantee procedure form H with certificate n 06 270 QT3664 Rev 3 issued by the notified body n 1131 CEC via Pisacane 46 Legnano MI Italy Bevilacqua 15 01 2008 Marketing Manager Signature dor 1 1 USE IN COMPLIANCE WITH DESTINATION AERMEC units are constructed ac cording to the recognised technical standards and safety regul
38. f Co he following diagrams show how to ob ain corrective coefficients to use for units in their various versions in cooling mode external air temperature to which referen ce is made is shown in correspondence to each curve KEY Cf Corrective co efficient of the cooling capacity Ca Corrective co efficient of the input power FOR At DIFFERENT TO 5 C At the evaporator use Tab 9 3 1 to obtain the correction factors of the co oling capacity and input power In order to consider exchanger dirtying use the relati ve dirtying factors Tab 9 4 1 9 CORRECTIVE COEFFICIENTS Cf COOLING CAPACITY CORRECTIVE COEFFICIENTS 16 15 14 1 3 12 1 1 0 9 0 8 0 7 0 6 0 5 0 4 5 4 2 0 2 4 6 8 10 12 Water produced C 20 C 25 C 30 C 35 C Ca cooling INPUT POWER IN COOLING MODE CORRECTIVE COEFFICIENTS 14 40 l f Se 0 9 0 8 0 7 0 6 5 4 2 0 2 5 4 8 Water produced C 10 12 Cf VERSION C COOLING CAPACITY CORRECTIVE COEFFICIENTS 1 6
39. ntercept all the remaining Curves the points obtained from the upper curves represent the co efficients for cooling capac ity and input power for flow rates and pressure drops remember that these co efficients still need to be multiplied by the nomi nal value of the size in question whilst the lower axis recommends the glycol percentage value nec essary for producing water at the desired temperature f you require to calculate glycol percentage based on the tem 10 ETHYLENE GLYCOL SOLUTION FcGDpF a 210 FcGDpF b FcGDpF c 180 FoGDpF d 1 60 FcGDpF e 430 Qe 120 o tino FcGGF 100 VA 0 99 FcGPf FcGPa 0 5 15 20 30 35 40 45 50 55 Glycol b Temperature of water produced xternal air temperature 62 FcGPf Corrective factors of the cooling capacity FcGPa Corrective factors of the input power FcGDpF Correction factors for pressure drops evaporator av temp 3 5 C FcGDpF b Correction factors of pressure drops av temp 0 5 C FCGDpF c Correction factors of pressure drops av temp 5 5 C FCGDpF Correction factors of pressure drops av temp 9 5
40. plate exchang er withholding excess liquid Dehydrator filter Mechanical dehydrator filter realised in ceramics and hygroscopic material able to withhold impurities and any traces of humidity present in the cooling circuit Liquid indicator Used to check the refrigerant gas load and any presence of humidity in the cool ing circuit Thermostatic valve The mechanical valve with external equaliser positioned at evaporator outlet modulates the flow of gas to the evapora tor depending on the heat load in order to ensure a correct level of heating of the intake gas Electronic valve optional Liquid and pressing line cocks cooling versions only Allows interruption of the refrigerant in the case of extraordinary maintenance Solenoid valve The valve closes when the compressor switches off blocking the flow of refriger ant gas to the evaporator By pass solenoid valve heat pump only By passes the thermostatic valve during the de frosting cycle Cycle reversing valve heat pump only It reverses the flow of refrigerant on variation of summer winter mode and during de frost ing cycles One way valve Allows one way flow of the refrigerant Desuperheater on request only Plate type AISI 316 insulated externally with closed cell material to reduce heat loss Total recovery on request only Plate type AISI 316 insulated externally with closed cell material to reduce heat loss 5 6 FRA
41. unctioning It also allows correct functioning in heating mode with external temperatures exceeding 30 C and up to 42 C 64 64 64 64 64 as per as per as per as per as per standard standard standard standard standard 64 64 64 64 64 as per as per as per as per as per standard standard standard standard standard 64 64 64 64 64 as per as per os per as per as per standard standard standard standard standard DCPX not necessary fans already control their speed rol in the same plant as if they were the same unit Control system for control switch on off of the single chillers in a plant in where m ing constant flow to the evaporators The water accumulators with holes and supplementary electric heaters leave the factory with plastic protection 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 FACTORY FITTED ACCESSORY It is a manual pressure switch electrically wired in series with the existing a pressure switch on the compressor discharge pipe 7 TECHNICAL DATA 7 1 TECHNICAL DATA FOR VERSIONS L COOLING 0280 0300 0330 0350 0500 0550 0600 O650 0700 RPM NIE 97 103 126 137 156 L 53 63 68 81 87 93 113 127 144 kw 34 8 53 9 60 0 20 3 22 6 2
42. ure Evaporation temperature AMENTO 400V 3N 50Hz 63 6 67 6 60 8 75 2 76 81 35 C 1 SOUND POWER Aermec determines sound power values in agreement with the 9614 2 Standard in compliance with that requested by Eurovent certification 2 SOUND PRESSURE Sound pressure measured in free field conditions with reflective surface directivity factor Q 2 at 10mt distance from external sur face of unit in compliance with ISO 3744 regulations 17 18 The units in standard configuration are not suitable for installation in sal ty environments Maximum and mini mum limits for water flow rates at the exchanger are indicated by the cur ves in the pressure drop diagrams For functioning limits please refer to the below diagrams values for At 5 C NOTE In the cooling mode the unit can be started up with ambient air at 46 C and inlet water at 35 C In the heating mode the unit can be started up with ambient air at 15 C and inlet water at 20 C The unit can operate at these condi tions only for the time which is neces sary to achieve the right temperature in the plant To reduce this time it is re commended to install a 3 way valve that allows to bypass the water flow in the plant until the achievement of the conditions that allow the unit to
43. wer take into account the presence of gly col and diverse evaporation tem perature The pressure drop correction fac tor considers the different flow rate resulting from the application of the water flow rate correction fac tor Correction factor of water flow rate is calculated to keep the same At that would be present with the absence of glycol NOTE An example is given on the next page to help graph reading Using the diagram below it is possible to determine the percentage of gly col required this percentage can be calculated by taking one of the fol lowing factors into consideration Depending on which fluid is consid ered water or air the graph is inter preted from the right or left side from the crossing point of the external tem perature line or the water produced line and the relative curves A point from which the vertical line will pass is obtained and this will distinguish both glycol percentage and relative cor rection coefficients 10 1 HOW TO INTERPRET GLYCOL CURVES The curves shown in the diagram sum marise a significant number of data each of which is represented by a specific curve In order to use these curves correctly it is first necessary to make some initial reflections f you require to calculate glycol percentage based on the tem perature of the external air en ter from the left axis of the graph and once fhe curve is intercepted draw a vertical line which in turn will i
44. work within the proper operating limits KEY Functioning with glycol Functioning with glycol with DCPX accessory Standard functioning Standard functioning 22 with DCPX accessory ml ATTENTION A Contact our technical sales department if the unit needs to operated outside the operating limits ATTENTION If the unit is installed in particularly windy areas we recommend providing for windbreak to avoid malfunctioning of the unit device 8 OPERATIONAL LIMITS 8 1 COOLING MODE FUNCTIONING External air temperature d b C 15 T T T T T T T T T i T T T T T T T T T T T T T 1 5 0 10 15 18 Temperature of the water produced C 8 2 HEATING MODE FUNCTIONING 15 10 5 0 5 10 15 20 25 30 35 40 Temperature of the water produced C External air temperature d b C NOTE As for the versions with buffer tank 09 10 the operating limits in cooling and heating mode are 3 C lower 8 3 MOTORCONDENSING FUNCTIONING External air temperature d b C 14 15 6 4 2 0 2 4 5 8 10 12 Evaporation temperature C 9 1 COOLING CAPACITY AND INPUT POWER STANDARD VERSIONS HEAT PUMP VERSIONS IN COOLING MODE he cooling capacity efficiency and elec rical input power in conditions differing rom normal conditions are obtained by multiplying the nominal values Pf Pa by he respective corrective co efficients C
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