NECS-ST r HFC - Prime Climate

1 R410A refrigerantTotal versatilityShell and tube exchangerHydronic unit incorporated Air-cooled water chiller with helical fansNECS_ST_0504_1204_200907_GBrHFCR-410 A(The photo of the unit is indicative and may change depending on the model) Climaveneta Technical Bulletin0504 - 1204104 - 341 kWNECS-STIINECS-ST_0504_1204_200909_GBNE CS-ST HFC R410 ASUMMARYNECS-ST 0504 - 1204 Liability disclaimerThis bulletin is not exhaustive about: installation, use, safety precautions, handling and transport. Refer to General Manual for Installation for further bulletin refers to standard executions, in particular for dimension, weight, electric, hydraulic, aeraulic and refriger-ant connections (whereas applicable). Contact Climaveneta Commercial Office for further drawings and declines any liability derived from the bulletin s use. This bulletin is of exclusive property of Climaveneta, and all forms of copy are prohibited.

2 The data contained herein are subject to variation without quality system certi-fied to UNI EN ISO 90011. product presentation Energy indices ESEER and IPLV2. Unit description Standard unit composition Electronic control Accessories3. Technical data General technical data Cooling capacity performance Desuperheater capacity perfor. Recovery capacity performance4. Operating range5. Hydraulic data Water flow and pressure drop6. Hydronic group (optional)7. Electrical data8. Full load sound level9. Dimensional drawings10. Legend of pipe connections pg. n IIIpg. n IIIpg. n 1 pg. n 1pg. n 1 pg. n 2pg. n 3pg. n 3pg. n 13 pg. n 23pg. n 33pg. n 43 pg. n 44 pg. n 44pg. n 45pg. n 56pg. n 57 pg. n A1 pg. n A9 IIINECS-ST_0504_1204_200909_GBNECS-ST HFC R410A1. product PRESENTATIONNECS, the CLIMAVENETA R410A rangeScroll compressors, featuring high efficiency, low vibrations and low noise flexibility.

3 A good 9 size and up to 5 version are avail-able in the 113 - 341 kW load efficiency with EER > 4,3 New controller with QuikMindIdrorelax, in order to realize your presents its new necs (New Evolution Cli-maveneta System) range of chillers (heat pumps) fitted with R410A rotary scroll compressors. Consistently with corporate culture, the necs series exploits cutting-edge technology to achieve extremely high levels of quality, focusing on maximum energy efficiency and minimum noise R410A?Though R410A is a blend, it behaves just like a pure gas and features a negligible temperature glide. Thanks to its outstand-ing heat conductivity, R410A contributes towards achieving el-evated system efficiency. R410A is also an ecological gas, both because its elevated efficiency reduces electricity consumption and, consequently, CO2, emissions and because it does not damage the ozone layer (ODP = 0). The scroll compressor has been expressly redesigned for use with the new gas and is now even more compact and silent than VersionsTwo noise reduction versions are available for all sizes: low noise and super low noise.

4 Low noise levels are achieved by reducing fan speed while the circuitry has been optimised and the coils generously sized to ensure the unit works energy efficiency (EER)The energy efficiency (EER) of these Climaveneta units is fur-ther enhanced thanks to the fact that the design of the heat exchange surfaces, coils and plate exchangers was focused on minimising running costs. well as achieving an EER close to , this design focus achieves very high levels reliability and lengthens the working life of the Energy indices ESEER and IPLVI ncreasingly closer attention is being paid towards the power consumption of air-conditioning equipment, both in Europe and many years in the United States, reference has not just been made to efficiency at rated conditions. A valuation index is also used which considers marginal operation of the unit at rated conditions as well as increased usage in part load condi-tions when the external air temperature is lower than the rated value and when the separation stages of the cooling compres-sors are valuation index adopted in the United States is called IPLV (Integrated Part Load Value) and is defined in the regulations issued by ARI (American Refrigeration Institute).

5 ARI Standard IPLVARI =(1*EER100% + 42*EER 75% + 45*EER50% + 12*EER25%) /100 where EER100%, EER75%, EER50% and EER25% are the efficien-cies of the chiller in the various load conditions (100% - 75% - 50% and 25% respectively), calculated in the external air tem-perature conditions shown temperature of the water leaving the evaporator is consid-ered constant at C in all load conditions, with a delta of 5 C in the full load multipliers 1, 42, 45 e 12 are the cooling performance coef-ficients in various load conditions statistically calculated by ARI on the basis of surveys conducted, for various types of build-ings and operating conditions, in 29 American temp. leaving 6,7 C constantDeltaT full load 5 CLoad 100% 75% 50% 25%External air temp. 35 C 26,7 C 18,3 C 12,8 CIn Europe there is a proposal for EECCAC (Energy Efficiency and Certification of Central Air Conditioner)Proposal EECCACESEER = (3*EER100% +33*EER75% + 41*EER50% + 23*EER25%)/100 Evaporator temp.

6 Leaving 6,7 CDeltaT full load 5 CLoad 100% 75% 50% 25%External air temp. 35 C 30 C 25 C 20 C2,502,552,652,602,702,632,812,752,802,8 22,892,602,542,602,752,802,902,85 EER2,953,002,612,582,77+ 10%+ 10%IVNECS-ST_0504_1204_200909_GBNECS-ST HFC R410 AAfter establishing which index to use and estimating the total power required by the system in the summer mode (in kWh), we can calculate seasonal electricity consumption (in kWh) us-ing the following formula:Power absorbed = Power requested / Index of efficiencyThe real power calculation can be obtained more correctly in a dynamic form, that is, considering the load performance curve at different external temperatures, the location and the reference number of operating figures will allow plant consultants and designers to make their evaluations depending on the type of building, the place of installation and the type of heat load They can also determine the energy index using the method that best reflects plant requirements and can make compari-sons between similar or equivalent systems using the same reference B4,244,100524 B3,513,600604 B3,833,790704 B3,803,910804 B4,204,080904 B4,134,151004 B4,043,961104 B4,144,101204 B4,204,160504 HL3,953,930524 HL3,934,040604 HL4,074,020704 HL4,054,150804 HL4,084,020904 HL4,004,041004 HL4,224,141104 HL4,414,371204 HL4,204.

7 160504 HT3,643,630524 HT3,633,760604 HT3,913,900704 HT3,894,020804 HT3,873,820904 HT4,003,861004 HT4,134,081104 HT4,294,251204 HT4,124,08 necs -STIPLVESEER0504 LN4,133,930524 LN3,773,840604 LN3,993,910704 LN3,974,010804 LN4,143,990904 LN4,104,071001 LN4,114,011104 LN4,194,15124 LN4,104,060504 SL4,104,020524 SL4,084,140604 SL4,234,140704 SL4,124,130804 SL4,194,080904 SL4,094,081004 SL4,264,101104 SL4,434,391204 SL4,234,19 Energy = percentage of total power produced in the various conditionsUsing the energy indices18 20 22 24 26 28 32 30 34 36 12 14 16 18 20 22 24 26 28 30 32 34 36 0 25 50 75 100 125 ESEER IPLV External air temperature ( C)External air temperature ( C)Load- Weight Coefficient (%) LoadAir CoefficientAir Coefficient100% 50% 75% 25% 35 C25 C30 C20 C3% 41% 33% 23% 35 C18,3 C26,7 C12,8 C1% 45% 42% 12% LoadWeight CoefficientLoadWeight CoefficientVNECS-ST_0504_1204_200909_GBN ECS-ST HFC R410 AThe new W3000SE Compact control unit with user friend-ly LCD interface is installed on all units.

8 This interface is also available in a version with a remote-control functions: QuickMind, local and remote FWS supervision, dual setpoint management, etc., confirm Climaveneta s commitment to continually developing its electronics technology. The heat pumps, moreover, are fitted with the original Climaveneta defrosting control system called Autotuning Defrost which con-siderably reduces defrosting times, thus improving the energy performance of the unit. Interfaces with BMS systems: META-SYS , MODBUS , LONWORKS , SIE-MENS , TREND .Black Box logs data relative to 200 alarm events which can be printed with a per-sonal UNIT with LED displayQuickMind is a special control unit which monitors the main operating parameters, predicts system behaviour and antici-pates unit settings in order to constantly optimise perform-ance; it allows both return and delivery water temperatures to be chosen as adjustment parameters.

9 It can reduce outlet temperature fluctua-tions even with a small amount of water in the system. When, for dual compres-sor chillers featuring a maximum of 12 start-ups per hour and using a traditional adjustment system, the minimum recom-mended water content is l/kW, Quick-Mind ensures the same chiller operates correctly even with a water content of just l/kW and considerably reduces outlet temperature following graph shows that outlet temperature fluctuations with QuickMind are limited to C as opposed to C if the traditional adjustment system were used, without even ensuring an accept-able minimum compressor start temperature ( C)Variation output water content in the plant , acceptable minimun starting time compressorsStep-wise regulationQuickmindVINECS-ST_0504_1204_2 00909_GBNECS-ST HFC R410 AIntegrated Hydronic Unit (Optional).Compact PLUG and PLAY has been designed to reduce installation work toa integrated hydronic unit incorporates all the hydrau-lic components, thus optimising installation space, time and integrated hydronic unit can be composed of:- In-line single or Twin centrifugal pump- Discharge valve- Inlet water temperature probe- Leaving water temperature probe- Air ventAvailable configurationsHydronic kit 2 poles low head pumpHydronic kit 2 poles high head pumpHydronic kit 4 poles low head pumpHydronic kit 2 poles low head twin pumpsHydronic kit 2 poles high head twin pumpsHydronic kit 4 poles low head twin pumpsFor more details, see the Hydronic Unit sectionThe necs range of chillers with heat pump is available in the IR configuration.

10 This allows units to be combined with IDRORELAX, a centralised hydronic system for manag-ing cooling and heating requirements and producing hot running water for residential, hotel and office applications. Further information on the IDRORELAX system can be obtained by consulting the relative HFC R410 ANECS. State of the art system necs is a new series of heat pumps and water chillers which are ideal for low-to-medium power air-conditioning systems and particularly suitable for installations with a limited water is a step beyond other systems thanks to its exclu-sive QuickMind control system, specifically developed by to the innovative QuickMind control, the necs system has been designed to work on plants with a low water content where, unlike traditional controls, it minimises the variations in inlet water temperature even in extremely variable load condi-tions. It is a highly professional alternative to the installation of storage assures a precise water temperature control even at just start-up and operating times have been the start-up phase, just the temperature set point needs possibility integration of the hydronic-pump-group inside the unit simplifies the water and electrical power circuits of the continuously adapts its system settings to the vari-ous requirements of the plant.