ERA: a chiller to suit everyone

Air-cooled water chillersFree cooling chillersAir/water heat pumps

E R A R A N G E

5 0 - 1 1 0 k W

E R A R A N G E

ERA:Efficiency,Reliability,Adaptability.

Protection of the environment.The choice of R410A is part of what makes the ERA range so energy-effi-cient, resulting in significantly reduced indirect CO2 emissions and less impact on global warming.

Freedom to save.In the right climate, thanks to the con-tribution from external air in chilling or pre-cooling the water, the free-cooling system can contribute to the cooling load throughout most of the year for significant energy savings.

Freedom of installation.With ERA, free cooling is now an op-tion even for chillers located indoors. So restrictions on external location are no longer a barrier to energy saving.

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Two units in one. Double the choice in terms of fan type to meet the individual installation requirements and double the choice of control system mean that each chiller can be tailored to suit the specific application.Individual circuits with tandem com-pressors ensure very efficient energy utilisation at all load conditions: both total and partial.

These features, developed with leading edge technology, mean that the ERA range can offer a reliable solution to meet the needs of practically any appli-cation, with significant savings in ener-gy consumption.

Intelligent Free-CoolingWhen there are stand-by units, their free-cooling resources can be deployed at the same time as the running units, for maximum energy saving.

E R A R A N G E

Two is betterthan one.Cooling loads generally vary consider-ably at different times of the year and during the course of any single day. It is therefore increasingly important to use chillers that can adapt to part load operation in particularly energy-efficient fashion.The entire ERA range is equipped with tandem compressors.

Less noise, longer life.Composite technology provides the axial fans used in this range with inno-vative features, optimising the air flow for increased efficiency and low noise level. The use of backward curved blade fans, instead of traditional cen-trifugal fans, in the units which can be ducted, provides a reduction in electri-cal power absorbed and, thanks to the directly coupled motor, greater reliabil-ity. Selection of the optional E.C. fan motors further enhances the efficiency and reliability.

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Just what you need, when you need it.Equipping the units with electronic expansion valves which are directly managed by the chiller control system allows highly efficient control of refrige-rant flow resulting in a lower conden-sing temperature at a given ambient

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Impeller

Rotor with magnet

Stator sleeve with bearingsStator windingIntegrated electronics

Impeller flange

temperature, together with a more precise and stable evaporating tempe-rature compared to a traditional system with mechanical expansion valves. This makes for considerable ener-gy savings and more precise con-trol of chilled water temperature.

E R A R A N G E

Free coolingWhen ambient temperatures are low enough, chilled water is produced by using the cooling effect of the external air and therefore energy consumption is significantly reduced, since it involves only the fan motors with little or no com-pressor operation. Year-round applica-tions often incorporate redundancy in order to guarantee 100% cooling avail-ability. Intelligent free-cooling ex-ploits also the free cooling coils of the stand-by units as well as those that are running in order to increase the free-cooling capacity, and thereby further decrease the already low power consumption.

R410ASimilar to a single-compound refriger-ant, R410A features an almost com-plete absence of glide during the phase change, therefore eliminating ener-gy losses. Thanks to an improved heat exchange capacity and a significant reduction in pressure drops compared to R407C, it is possible to benefit from significant reductions in volume with an increase in efficiency.

TandemEvery model in the ERA range is equipped with two compressors on a single refrigerant circuit thereby offering two-step capacity control. Since the heat exchange surface areas are sized in order to dissipate the total load, un-der part load conditions there is effec-tively “double” heat exchange capacity, optimising efficiency and maximis-ing the COP.

High performance fansThe axial version is equipped with fans of composite construction: an alumin-ium core with plastic fan blades. This solution allows better heat dissipa-tion, compared to a fan made entirely of polyurethane, with a better air flow, compared to fans of all aluminium con-struction; all of this with less weight, in-creasing reliability as a consequence.

EC fans motorsUnits with backward curved blade fans can be equipped with an electronically commutated (EC) motor ensuring:• High reliability• Increased efficiency• Low inrush current (less than run

current)• Optimum performance

Electronic expansion valveE.E.V.Monitoring and managing the refrig-erant circuit directly from the control system though the use of an electronic expansion valve ensures:• Reliability: components are always

operated within their own operating limits

• Efficiency: comprehensive man-agement of superheat and a lower condensing temperature at any giv-en external temperature

• Precision: improved control of the refrigerant evaporating temperature and hence also of the chilled water temperature

Greater flexibility and efficiency for the designer

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Internal and external installationSelecting a type of fan which can be ducted allows the chiller to be positioned almost anywhere without the usual de-sign constraints on the location.

E R A R A N G E

Compact spaceThe units have an air intake on one side only.With this solution there is less access clearance required around the unit, facilitating positioning and access for maintenance.

R410AThe unit performance is not affected by the separation of gas components. Should any refrigerant leak ever arise, it can be dealt with quickly and effec-tively and topped up after repair, with-out the need to decant and replace all of the refrigerant charge, safe in the knowledge that the blend composition remains unchanged.

Easy accessibilityAll of the components are directly ac-cessible via specific panels which are easy to remove and to handle.Quarter-turn fasteners and handles make for rapid and easy access.

Simple maintenanceMaintenance is simple thanks to the onboard facilities for:• Checking the liquid line sight glass• Setting the expansion valve• Refrigerant charge

Easier to service

E R A R A N G E

Low noiseThe noise generating components within the unit have been carefully selected for their acoustic character-istics. Both the enhanced casings of the compressors and the construc-tion materials of the fans contribute to sound pressure levels in line with the strictest acoustic standards anywhere.

Guaranteed savingsWhen evaluating alternatives it makes sense to take into account the entire life cycle of the equipment. Total Cost of Ownership assessment of any unit in this range highlights the savings in a number of areas: from energy consumption to maintenance, from continuity of service to space requirements.

Better scopefor applicationThe standard modulating condensing pressure control on all of the units, the sizing of the heat exchange surfaces and the use of R410A combine to allow a wide field of operation:• From -20° to +50°C ambient in chiller

operation• Water supply temperature down to -

15°C• Heat pump operation in an ambient

as low as -15°C• Down to -25°C ambient in free-cool-

ing

Uninterrupted operationEffective maintenance and periodic checks of equipment are the basis for correct and long-lasting operation. Operation without interruption means a reduction in service times and costs.

More advantages for the end user

Data measured in free field at 10 metres from the unit operating at nominal conditions, coil side, directional factor Q=2

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E R A R A N G E

Monitoringrefrigerant leakageThe electronic expansion valve moni-tors the operating parameters of the unit and can therefore provide early detection of refrigerant leakage, so that the cause can be Investigated before the entire charge has been re-leased into the environment.

EnvironmentallysustainablematerialsThe whole design process has been carried out in an environmentally sus-tainable way, evaluating not only the technical characteristics of compo-nents, but also the environmental impact of their production and their eventual disposal in environmentally re-sponsible fashion.

EfficiencyTo reduce energy consumption is to re-spect the environment, limiting indirect CO2 emissions into the atmosphere and reducing global warming.

Low global warming impactSynthetic refrigerants contribute to an increase in global warming. R410A, thanks to its physical characteristics, ensures efficient and reliable system operation while at the same time mini-mising the impact on the environment. Total Equivalent Warming Impact is the parameter that defines the en-vironmental impact of each refrigerant by assessing both the direct effect of potential refrigerant emissions during the life cycle of the unit and the indi-rect effect of CO2 emissions released in electricity generation. The TEWI for R410A is 14% lower than that for R407C.

Increased sustainability

Key:

m refrigerant charge in kg

L % annual loss of refrigerant

n product lifespan in years

GWP global warming potential in kgCO2/ kg

b emission of CO2 in the power plant for each kWh produced

E annual energy consumed in kWh/ year

a refrigerant recovery factor at end of life (a =0.....no recovery; a=1......total recovery

TEWI = m × L × n × GWP

+ β × E × n + m × (1-α) × GWP

refrigerant losses

machine efficiency recycle

machine related factors maintenance related factors

ERAC/H/F 0521A 0621A 0721A 0821A 0921A 0922A 1021A 1022A 1221A 1222A

Cooling capacity (1) kW 47 56 65 75 83 83 96 95 111 111

E.E.R. (2) 3,4 3,2 3,3 3,4 3,2 3,2 3,27 3,2 3,2 3,2

Heating capacity (3) kW 54 63 73 84 94 n.a. 110 n.a. 128 n.a.

C.O.P. (2) 3,6 3,6 3,5 3,6 3,6 n.a. 3,6 n.a. 3,6 n.a.

Capacity in free-cooling (4) kW 35 37 43 52 53 53 62 62 71 71

E.E.R. (4) 22,4 23,5 21,3 19,0 19,5 19,5 26,0 26,0 23,0 23,0

Noise pressure level low noise (5)

dB(A) 42,6 43,5 44,0 44,3 44,3 44,3 53,4 53,4 54,7 54,7

Noise pressure level ultra low noise (5)

dB(A) 39,1 39,8 40,3 40,1 40,1 40,1 49.6 49.6 51 51

Height mm 1560 1560 1560 1560 1560 1560 1874 1874 1874 1874

Length mm 1190 1190 1190 1190 1190 1190 1192 1192 1192 1192

Width mm 2008 2008 2798 2798 2798 2798 3075 3075 3075 3075

ERCC/H/F 0521A 0621A 0721A 0821A 0921A 0922A 1021A 1022A 1221A 1222A

Cooling capacity (6) kW 48 57 66 76 84 85 97 97 113 113

E.E.R. (7) 2,9 2,8 2,9 2,9 2,8 2,8 2,8 2,8 2,8 2,8

Heating capacity (8) kW 59 69 79 92 102 n.a. 118 n.a. 138 n.a

C.O.P. (7) 3,3 3,3 3,4 3,3 3,3 n.a. 3,3 n.a. 3,3 n.a.

Capacity in free-cooling (9) kW 39 41 47 57 59 59 68 68 80 80

E.E.R. (9) 8,3 8,8 8,8 7,8 8,0 8,0 9,4 9,4 8,5 8,5

Noise pressure level (10) dB(A) 67,5 67,6 67,5 69,1 69,1 69,1 71,2 71,2 72,5 72,5

Height mm 1836 1836 1836 1836 1836 1836 2146 2146 2146 2146

Length mm 1190 1190 1190 1190 1190 1190 1190 1190 1190 1190

Width mm 2006 2006 2798 2798 2798 2798 3067 3067 3067 3067

HeadquartersUniflair S.p.A.Viale della Tecnica, 235026 Conselve (Pd) ItalyTel. +39 049 5388211Fax +39 049 5388212

Uniflair Iberica S.A.Camí De Can Calders No. 808173 San Cugat Del VallesSpainuniflair@uniflair.es

Uniflair GmbhGeorg-Wimmer-Ring 1885604 ZornedingGermanyzentrale@uniflair.de

Uniflair Magyarország KFTOstoros UT 65/b1164 BudapestHungaryuniflair.hu@uniflair.com

Uniflair (Zhuhai) LTDUniflair Industry ParkLiu Jiao Ting, Jin Ding519085 - Zhuhai - GuangdongP.R. Chinasales@uniflaircn.com

Uniflair India PVT.LTD.1001-02 Mercantile House15 K.G. MargNew Delhi 110 001Indiasgagneja@uniflair.co.in

Uniflair South Africa PTY LTDUnit 8 Meadowdale Industrial ParkCNR Koornhof And Essex StrMeadowdaleSouth Africauniflair@uniflairsa.com

info@uniflair.comuniflair.com

We are also present in more than 60 countries world wide through a specialised distribution network(list available at uniflair.com)

E R A R A N G E

05R

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12X

1A

(1) Data refer to nominal conditions: water temperature 12 / 7 °C; ambient temperature 35 °C; glycol 0% (2) Data refer to total absorbed power (compressors and fans) (3) Data refer to nominal conditions: water temperature 40 / 45°C, external temperature 7°C dry bulb, 6°C wet bulb (4) Data refer to nominal conditions: inlet water temperature 15 °C; ambient temperature 5 °C; glycol 20% (5) Data measured in free field at 10 metres from the unit operating at nominal conditions, coil side, directional

factor Q=2 (6) Data refer to nominal conditions: water temperature 12 / 7 °C; ambient temperature 35 °C; glycol 0% (7) Data refer to total absorbed power (compressors and fans) (8) Data refer to nominal conditions: water temperature 40 / 45°C, external temperature 7°C dry bulb, 6°C wet bulb (9) Data refer to nominal conditions: inlet water temperature 15 °C; ambient temperature 5 °C; glycol 20%(10) Data measured in free field at 1 metre from the unit operating at nominal conditions, coil side, directional factor Q=2

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