specialized in cooling - air conditioning · pdf filespecialized in cooling eko.e r290 -...

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EKO.ER290 - Propane

Technical catalogue

Air cooled water chillerswith axial fans

Range from 48 to 430 kW

Heronhill - for all your Euroklimat requirements

Tel: 01823 665660 www.heronhill.co.uk Fax: 01823 665807

SUMMARY

Description Pag

• OVERVIEW“Chillers” products range overview.........................................................

4

• FOCUSThe compressors (ATEX directive)...........................................................The electronic controls.............................................................................The selection software.............................................................................The webservice........................................................................................The natural refrigerant..............................................................................

6 7 8 910

• MAIN FEATURESUnits identification...................................................................................Technical construction characteristics......................................................Possible configurations............................................................................Available accessories...............................................................................

11121415

• TECHNICAL DATAUnits technical data................................................................................. 16

• FACTORSCorrection factors....................................................................................Operating limits.......................................................................................

1818

• ELECTRICAL DATAElectrical data for all the components and totals..................................... 19

• REFRIGERANT SCHEMA AND TECHNICAL DETAILSUnits frigorific schema.............................................................................Desuperheater..........................................................................................Vibration isolation.....................................................................................Interfacing with differents BMS control...................................................Connecting a series of units....................................................................

2022232425

• DRAWINGSDimensional drawings............................................................................. 26



www.euroklimat.itwww.euroklimat.it

R 404aR 407C R 404aR 134aR 404aR 410A

R 404aR 407C R 404aR 134aR 404aR 410A

R 404aR 290

4

Overview products

Water/water

Air/water

CHI Version

PDC Version

CHI Version

Only cooling

Only cooling

Heat pump

Standard temperature rangeFluids from 0°C to 20°C

Standard temperature rangeFluids from 0°C to 20°C

Scroll compressorsPistons compressors

Screw semihermetic compressors

NO FROST exchangersPlate exchangers

Shell and tube exchangers


Shell and tube exchangersA wide range of water chillers and heat pumps designed for the “Cooling”.

The different configurations make this series suitable to satisfy all the opera-

ting requirements and the several accessories available allow to customize the

products according to the real application request. A reliable choice for even

difficult and problematic industrial processes.

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PDC Version

Heat pump

Scroll compressorsPistons compressors

Screw semihermetic compressors








5

Overview products

RAK.W RAK.W/FC

RAK.E RAK.C RAK.A RAK.E/FC

RAK.E/PC RAK.C/PC RAK.A/PC

Water cooledwater chillers

from 5,6 to 1187 kW

Water cooledwater chillers with

packaged free cooling

from 12,1 to 436,8 kW

Air cooledwater chillers

with centrifugal fans

from 5,8 to 410 kW

Air cooledwater chillerswith axial fans

from 5,8 to 961 kW

Condenserlessunits

from 5,2 to 353 kW

Air cooledwater chillers with

packaged free cooling

from 44,9 to 552,3 kW

Air / waterheat pump

with axial fans

from 5,8 to 410 kW

Air / waterheat pump

with centrifugal fans

from 5,8 to 410 kW

Condenserless unitsheat pump

from 35,5 to 353 kW

RAK.W/PC RAK.W/PCWater/water heat pump

with automatic cycleinversion gas side

from 5,6 to 528 kW

Water/water heat pumpwith manual cycle

inversion water side

from 46,8 to 1187 kW

EKO.EAir cooled water chillers

with axial fansand refrigerant R290

from 48 to 430 kW




FOCUS6

The compressors (ATEX directive)

Euroklimat uses several types of compressors to meet the different needs of use: the classic

“scroll” to the innovative “semi-hermetic screw.

But the emphasis on industrial applications and production process leads Euroklimat to

take often compressors “semi-hermetic alternatives” that are still today one of the most

popular and reliable components. The request of use The natural refrigerants such as pro-

pane, also, allows the construction of this type of compressors with a specific component

maker and a dedicated study to the R290 use. The based concept is simple: a cylinder,

inside which a piston works, allows the suction of the refrigerant gas and the subsequent

compression.Two plates valves installed on respective chambers of recovery and dischar-

ge, supervise the functioning of the system ensuring the flow of refrigerant in the circuit. The

lubrication system, finally, achieved through a forced circulation of specific oil provides an

adequate guarantee of functionality over time.

The oil level is constantly monitored by the operator through a glass clearly visible outside

of the compressor. Great advantage of these compressors is the total internal accessibility

which promotes restoration on site. The heads, the electric motor and all components are

completely removed.

The practicality, together with the great knowledge that operators have of this device, ena-

ble it to intervene without having to unplug the compressor from, saving time and transfers

often costly and complex.

The control of cooling capacity, using a special “valve solenoid” on the head of the com-

pressor, reduces the potential provided by following a precise request of the load.

More specifically, and referring to the operation with R290 is necessary to emphasize that

hydrocarbons (propane category to which it belongs) have no corrosive effect on copper

components and therefore can be safely used semi-hermetic reciprocating compressors

with electric motor inside. However, there are a special construction particulars, which can

be summarized as follows: mechanical optimized for the use of hydrocarbons; special oil

charge; equipotential bonding of all electrical components; electrical box for ATEX applica-

tions; solenoid valve, oil differential pressure switch and PTC sensor ATEX certified, ATEX

compliant crankcase oil heater.




7

The electronic controls

One of the strengths and quality of equipment is the accuracy and deepening management

of electronic controls.

The new microprocessor-based systems achieve levels of detail is absolutely incredible and

the evolution of these systems offered the possibility to control not only the parameters of

use but, more importantly, all functions and safety equipment stores.

The electronics are basically divided into two basic parts: support for “hardware” and a

program software.

The hardware is made by the printed circuit boards where physically come all the signals

from sensors placed along the circuit and where it triggers all the commands on, off, auto,

block and counter.

These signals can be either on-off as in the case of on / off a compressor, or as variables in

proportion to the opening of a valve or a change in fan speed during a condensation control.

In the software section, which consists of a computer program physically imprinted on a

chip and placed on the Hardware tab, are written all the functions that the device must per-

form after receiving a signal, however, before sending any commands to the components

of machine.

While in the past to create a purpose it was necessary to combine the action of some elec-

trical components, today is enough to write it to run.

This fact has made it possible to chain several actions, perhaps even for the same function,

and make much more sophisticated control or, even, as occurs in some cases carrying out

functions that previously were not possible.

LANs that arise through a simple electrical connection, allowing the dialogue more micro-

processors and, therefore, more machines with the obvious advantages plant.

Moreover, given the now widespread systems “BMS” for total control of buildings, we can

interface with the microprocessor of the machines these devices even if the design langua-

ge is different and, of course, just any producer.

If you can not talk directly, you can refer to a “communication protocol” international, through

which send their information to the outside.




8

The most delicate problem of every modern company is to be able to provide rapid, accu-

rate and complete informations.

The evolution of communications technology has led to significantly reduce the time avai-

lable to produce the answers and to make matters worse, the specialized technical/

production which has been gaining increasing, has allowed companies to expand product

capabilities and configurations.

This has dealt a blow to that part of business that must oversee the preparation and com-

munication of technical data or commercial products. Marketing efforts, documentation,

the same sales and even the general trend of the company often depend on the capacity

and speed to respond to market demand.

Until the last century it was unthinkable to imagine multiple assessments, while rich in

information, while immediate. You could certainly make an interesting document but at the

expense of the timeframe for implementation or at the expense of accuracy.

Fortunately, technology has also allowed in this area to find good solutions and helpful to

the operators.

Euroklimat has invested heavily in electronics because he always wanted to provide a

serious service to its customers and after several years of discussions, research and im-

provements may present with pride Euroklimat Software Selection.

In the vast range of products Euroklimat, this program is able to search, select and deliver

the equipment or appliances necessary to meet the demand. The options are many, the

flexibility is extreme. Machine-type silenced the use of heat recovery from the calculation

easier with the nominal conditions for the dimensioning more complicated to use specific

values, just a shot of clicks to get immediate answers analytical and articulate. Another

great advantage of this software is the possibility to directly compare multiple devices and

be able, therefore, without laborious manual assessment, to select the optimal product for

energy performance, or for any other reason.

At the conclusion of the selection, a large section devoted to print or export of documents

in traditional formats, allows the production of processed clear and very well planned.

The investment of Euroklimat is not limited to this aspect but is also developed through the

web with innovative and useful services for all employees and users.

The selection software




9

The webservice

With the advent of information technology, there have been several opportunities for com-

munication and transmission of information unthinkable until last century. Moreover the de-

velopments of recent years moreover brought a revolution to labor standards but also of life

to which we were accustomed.

We have, in fact, experienced the birth of a new “era”. Today getting information in real

time with continuous, accurate and complete updates is possible. The possibilities for error

are reduced to a minimum and really the quality delivered to you is awesome. Euroklimat

considered a must taking advantage of this huge potential creating a website very articulate

and detailed, providing an important support to all customers: here it is the “webservice”.

The simple and intuitive interface of the site allows you to “surf” quickly and easily reach

the pages or news of interest. A real direct link between customer and company, obtained

thanks to the interactivity of the platform, represents a major “plus” of this system, more

than ever necessary to forward the significant technological innovations or achievements.

“webservice” by Euroklimat is a versatile tool and at the same time rich and able to meet

more different needs: the simply curious internet surfer or the refrigeration technician can

find “on-line” clear answers and complete documents.

Within the various sections, it contains general information about the company, its history,

the correct contacts, pages dedicated to Euroklimat certifications, a few important installa-

tions. But the most interesting and detailed areas concern the access and the availability to

download documents. The sections named as “Download” and “Eurokey” respectively allow

you to save on your computer the catalogs and the unit selection software.

Last but not least, the area that has given his name to the whole site provides access to

detailed documentation of every single machine: dimensional drawing, schematic diagram,

spare part list, confirmation ‘order, instruction manuals… Arranged and designed for the

specific skills, “webservice” allows the customer or the service technician to access their

files and recover real time info which are then updated and available even when on the

installation site.

Another step to the Euroklimat “mission”: we help our customers succeed.




Global Warming Potential

R 717 (NH3)

R 134a

R 1270 (C3H6)

R 290 (C3H8)

R 744 (CO2)

R 407C

R 22

R 410A

R 404A

R 507

GWP = 0

GWP = 3

GWP = 3

GWP = 1

GWP = 1430

GWP = 3985

GWP = 3922

GWP = 2088

GWP = 1700

GWP = 1744

10

The natural refrigerant

NaturalRefrigerants

ArtificialRefrigerants

The “R 290” Global Warming Potential is one of the less value in refrigeration.

Speaking in a very general way, a refrigerant has the task of transferring optimally heat from a hot source to a colder. The transfer of this

energy can take place with an exchange of latent type (evaporation, condensation) or sensible (heating, cooling). In any case, it is very

important that the refrigerant used to maintain very high values of : density, enthalpy, heat capacity and stability.

Even within a compression refrigeration cycle the fluid used for the trasferiemnto energy is the “refrigerant” that can be of a natural type

(such as ammonia, carbon dioxide, propane, etc..) or artificial and in this case it is generically called “Freon”.

Clearly, studies and research specialists are aimed at identifying the best features of a refrigerant comparing them to the work required

in the context of use. From many years, in air conditioning / refrigeration, is also used Propane (R290) as a natural refrigerant. Propane

is a “aliphatic hydrocarbon” belonging to the series of “alkenes” and you get to fractional distillation from petroleum and natural gas.

In a historical moment in which lends itself particularly attention to everything that can have an impact on the environment that surrounds

us, evaluations and considerations that arise in the past did not exist. Rightly, we must be very careful not to create damage the natural

balance of our planet and this particular attention should be paid to the technological equipment that is constantly on the rise, are used.

Here, then and increasingly, deepening towards the use of natural products that may cause the least “uncomfortable” environment as

possible. The “Global Warming Potenzial” indicated in the table above, which expresses the contribution to the greenhouse effect (is

the Earth’s ability to retain its atmosphere in, the solar energy) given by an emission gas in the atmosphere, forcefully illustrates how the

propane is less “harmful” than all Freon. The good physical characteristics and also thermodynamic properties of this natural gas, in

addition, allow to realize interesting applications with great technical and energy results.

Euroklimat, wanted to develop a series of units that take advantage of these features and these properties.




EKO.E/** - I / ST / AS 140 2 S

11

Units identification

The EKO.E range consists of air cooled water chillers with R290 natural refrigerant. Thanks to the special design and components used, the-

se units can be installed outdoor in open spaces. The care of the details and the rich equipment of the units, which are of “package” type,

facilitate the positioning and fitting to the system, reducing the installation activity only to electrical and plumbing connections. The following

diagram clarifies the meaning of the identification code and of the configuration options.

Familymambership

Execution

Solution

Version Equipment

Model of the unit

Number of compressors

Type of compressor

** = Omitted

B = BaseI = Integrated

ST = Standard AS = Standard

1 = 1 compressor2 = 2 compressors

S = Semi-hermetic Alt.




12

Technical construction characteristic

HousingThe basement is made of galvanised steel painted with polyurethane powder and equipped with support feet for fixed installation. A fra-mework made in anodized aluminum, is fixed to the base. The frame profiles are specially joined together by corner joints in aluminum alloy which makes the construction firm even in difficult conditions such as the handling and transport. Upon completion of the structure are installed closing and service panels, made of galvanized steel and finely painted outside. The set, designed specifically for the application and optimized for operation and result of years of experience, facilitates maintenance operations allowing to operate in an internal parts also under running condition machine.

FansAxial fan directly coupled to the electric motor, 4 or 6 poles, external rotor type, with special labyrinth watertight, bearings free from servicing and incorporated thermal protection. Fans have blades with haul profile, dinamically and statically balanced and are equipped with accident prevention grill on air inlet. Aerodynamic housing and wing profile blades increase efficiency and decrease noise level.

CompressorRECIPROCATING semihermetic compressor, complete with forced lubricated system, oil electrical heater when unit on standby, isolation valve on gas inlet and outlet. Electrical motor is cooled by refrigerant gas in suction and is protected against working anomalies by integral electronic protection and thermistors embedded in windings. Compressors are fitted on antivibration mountings. For models from 251 to 1402 they are supplied with unloaded head, to adapt cooling capacity in case of reduction of thermal needs. The compressor is mechanically optimized for use with Hydrocarbons and built in according to Directive ATEX 94/9/CE for the safety requirements: Zone 2, Gas group IIB. Some components are ATEX certified.

Water heat exchangersThe water exchangers (evaporator; liquid sub-cooler) is brazed plate of stainless steel AISI 316 type. The large surface area of the plates, exactly the same on both the gas and the water side, providing a high thermal exchange and offers very high performance results. This type of exchanger has the great advantage of having extremely small dimensions thus allowing to reduce the space occupied by the machine and ensuring an interesting ease of maintenance. The control of the evaporator is thermostatic water side and it is managed entirely by the microprocessor system mounted on board. On the evaporator ther is also a water differential pressure switch to stop the unit in case of low water flow. The heat exchangers that work at low temperature (temperature which may cause condensation, free cooling heat exchanger and evaporator) are covered on the outside by a special closed cell insulation vapor barrier. The connections are placed directly on the heat exchanger and kept outside the unit in dedicated panel.

Air heat exchangerThe condensing heat exchanger is finned pack type and is designed with a wide front surface to obtain a high heat exchange with a low pres-sure drop both on the air side and the gas side. It’s made from copper pipes in staggered rows and mechanically expanded into aluminum fins.

Refrigerant CircuitThe refrigerant circuit is made entirely of copper tube, brazed with silver alloy, and is isolated on the suction part, to avoid the formation of condensation. It is designed to minimize the load losses so as to avoid capacity reductions and realized in a workmanlike. A special safety device ensures the opening of the circuit before reaching critical operating situations.Essentially consists of:- Filter molecular sieve, capable of retaining impurities of mechanical origin and dryer to protect and to eliminate the circuit from traces of moisture- Indicator liquid passage for the verification of the charge and of the moisture content of the gas, thanks to an indicator color change- Rotalock on the liquid line- Solenoid valve with shut-off function installed on the liquid line- Electronic expansion valve- Pressure transducers that transmit readings directly to the microprocessor by unit- High pressure switch with manual reset- Low pressure switch with automatic reset- Differential pressure switch for lubrification oil- Flexible pipings for pressure switches connection and pressure sensors- Refrigerant charge and non-freezing oil (excluding the amount relating to piping collegamente between unity and condensers)- Proportional signal 0-10V. for control of condensation- Pressure gauges with glycerine in order to avoid the oscillation of the rod reading and positioned both on the high and low pressure of the refrigerant circuit.- Some components are ATEX certified.The refrigerant circuit can be single or double, depending on the model and quantity of compressors installed (see detail in the technical data table). To ensure high-safety-level the unit is equipped with a special gas detector for flammable gases, including three alarm levels and




13

Technical construction characteristic

Electric boardEach unit is equipped with electric panel, built and wired and fully tested at the factory. All the wiring is numbered and stationed inside the equipment optimally to facilitate troubleshooting. The installed components are identified by nameplates to better identify the application and the type of action. The electrical equipment is manufactured according to EN60204-1, and is complete with the following main components:- Main switch and door lock.- Protective circuit-breakers on every load- Contactor for each load- Transformer for auxiliary circuit power supply and the system microprocessor regulation- Terminal board for external enable contacts and alarm

ControlsThe microprocessor control system in addition to providing a rapid and intuitive digital interface to the user, manages all machine control operations offering, thanks to the possibilities given by the electronics, a thorough safety and comleta on the operation of the whole system. The backlit LCD can be installed directly on the machine and/or remotely placed (possible on request). Using the display, you can monitor the performance of the system variables and display all the working conditions or the settings.In more detail, you can perform the following functions:- Programming of the machine with password-protected access to ensure safety to the most sensitive parameters- Ability to change at any time the main conditions of operation which may be protected by password- View by display the alarms detected and their acoustic signal by a buzzer, the historicization of alarms can be found by querying the display- LED display of the active functions- Visualization of all the measured- Operator interface with digital display.- Remote Management cumulative alarm free power contact- Ready for ON/OFF remotely.- Alarm reset and unlock unit from keyboard- Audible alarm.- Control keyboard.- Self-diagnostic Functions- Ability to manage the local network via the LAN connection and management of multiple devices- Ability to output serial interfacing with external supervision systems- Any possibility of manual handling of individual components installed- Flash memory that has the function to keep in memory the data set in case of lack of power supply

Hydraulic CircuitThis range of equipment includes a series of pumping system for connected user. All the hydraulic circuit is made at the factory and mounted inside the unit without changing the overall dimensions. The parts which may cause condensation are insulated with special material with closed cells. The management and control of the various components is done through the mounted microprocessor on board and electrical parts are included in the general electric box of the machine.The main components of the circuit are:- Stainless steel storage tank painted and externally insulated with closed cell material- Safety valve- Tap air vent- Shut-off valves on the water side- Pump centrifugal type with 2-poles electric motor- Electrical equipment for command, control and protection for all installed pumps




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14

Possible configurations

“Integrated” VersionThe Base (B) solution, as interface to the plant, includes the water fittings of the evaporator only. However an external pumping system and a suitable buffer tank are necessary for properly circulating the fluid. One of the biggest advantages offered by this Integrated version (I), is represented by its own design characteristics of the equipment, which allows for ease of installation difficult to achieve with other solutions and interesting cost savings. Even the Base version, in fact, the machine offers a set of functions and activities very significant but all grouped in a solution, compact and packaged so as to avoid wastage of installation space and reduce operations on site only to electrical and hydraulic connections.The main sections/features of the Integrated version are:- the production of cold in a mechanical way - the tank to a large thermal storage- the circulation water systems to the user- the hydraulic tubes for the connection between all the componentsThe fact that you have everything already pre-assembled and pre-tested in the factory, operating by a single control system and be able to avoid doing work on site searching for the technical spaces, studying the paths, creating poses and adjust through testing often difficult, offers unparalleled reliability of the system than the already mentioned economical advantage.

A completion of the peculiarities of the machine, and also as already specified above, the refrigerant used is totally natural type which offers interesting advantages from the point of view of environmental impact beyond that, thanks to the specific sizing of the individual components, a safe saving energy.

DS EquipmentsIt consists of a plate heat exchanger fitted upstream the standard condenser. This exchanger, named as Desuperheater (DS), heats water and recovers free of charge, i.e. without worsening the unit operating conditions but on the contrary improving them, the heat of the hot refrigerant gas cooling it until it reaches the condensing temperature. The amount of the heat recovery depends very much on the general unit operating conditions; as an average, in normal situation, it corresponds to about 20% of the unit cooling capacity.

Available also the Version with FREE COOLING SystemThis type of equipment can also be realized with the free-cooling system that allows a large energy and cost savings when the outside air temperature turns out to be favorable. The cooling of the fluid, in fact, takes place without the use of the compressors. For the characteri-stics and for further details contact the sales Euroklimat office.

For the characteristics of the refrigerant used and for certain operational aspects related to the proper operation of the appliance, some components or parts of the circuit are ATEX certified.

Chiller

Hydraulic connectionsfrom Chiller

to user

Electric power input




15

Available accessories

The EKO.E series includes many accessories to adapt the unit features to the different operating applications. Some of them can be fitted even on site, while installing the unit, while others must necessarily be defined when ordering it since they involve main changes that cannot be completed on site. Some accessories cannot be fitted together and other ones are available on selected models only; therefore verifying the possible configurations with the Euroklimat sales office is necessary before ordering a unit.

The available accessories are the following:• Min and max power supply relays mounted directly inside the electrical box and with the function of stopping the unit in case the

power supply voltage is outside the tolerance range.• Condensing pressure control with modulating fan speed regulator. At the outside temperature decreases, a special phase cut sy-

stem, reduces the number of revolutions of the fans while maintaining the condensing pressure within the operating limits.• Evaporator antifreeze heater directly installed on the exchanger in order to preserve the component from ice damage.• Clock card mounted using special connectors on the microprocessor board. Indicates the time and day for each alarm occurred and

offers several other options for time management unit.• LonWorks® communication card (only in coupling to the upgrading electronic control) fitted with the appropriate connectors on the

microprocessor board. Allows serial transmission with the indicated protocol.• ModBus® communication card (only in coupling to the upgrading electronic control) fitted with the appropriate connectors on the

microprocessor board. Allows serial transmission with the indicated protocol.• Safety flow switch electromechanical type with the lock function of the machine in case of lack of or excessive reduction of the flow

of cooled fluid.• Intercepting valves for isolation circuit section are positioned on the suction line and on the discharge gas line.• Rubber vibration isolation mounting to isolate any vibration from the machine to the structure. They are made with two plates of

galvanized steel on which are positioned the locking pins with interposed a layer of special rubber insulating.• Spring vibration isolation mounting to isolate any vibration from the machine to the structure. They are made with two plates of

galvanized steel on which are positioned the locking pins interposed with a series of steel springs with insulation works.• Remote user terminal (only in coupling to the upgrading electronic control) can be used to get all the readings and duplicate com-

mands on a second display located at a distance and in more accessible site compared to the microprocessor on board the machine.• Soft start by “Part-winding” system, used in the starting phase of the individual compressors with the function to greatly reduce the

starting current. The motor of the compressor is made in a special way for this function.• Power factor capacitor mounted on each compressor with the function of maintaining the phase angle between voltage and current

(power factor) to a value higher than 0.9.• Overpressure / by pass automatic valve for water flow, installed directly on the hydraulic circuit.• Electric water pump added allowing you to have a pump on the same refrigeration unit in stand-by mode with the possibility of auto-

matic intervention in case of failure of the main pump.• Oversized water pump which has a prevalence up to 5 bar. The accessory is usable in all systems where the pressure drop of the

circuit is very high and a large prevalence is necessary in order to ensure the proper flow of water to user.• Open expansion vessel kit for the operation of the units in an open circuit, complete with: a container for the filling of the circuit; struc-

tural support; connection pipes; valves; small fixing.• Closed expansion vessel kit for unit operation in closed circuit with: expansion tank with membrane, structural support, automatic air

vent, automatic filling unit, connecting pipes, valves, fastening hardware.

The continuous evolution of the product due to technical and design updates, might change the accessories’ availability or their configuration possibilities. Euroklimat reserves the right to introduce changes without prior notice.




EKO.E 151 201 251 301 351 401

kW 48,0 58,5 69,4 83,0 103,9 122,6kW 11,6 13,0 15,6 17,7 22,4 27,0

m3/h 8,3 10,1 11,9 14,3 17,9 21,1bar 2,8 2,7 3,1 2,8 2,7 2,6kW 38,7 46,8 55,5 66,6 85,0 99,7kW 11,4 13,3 16,0 18,0 22,5 27,2

m3/h 6,7 8,0 9,5 11,5 14,6 17,1bar 3,0 2,9 3,3 3,1 2,8 2,7

dB(A) 73 75 76 76 77 79

-n° 1 1 1 1 1 1n° 1 1 1 1 1 1n° 1 1 2 2 2 2

-n° 1 2 2 3 3 3kW 0,9 1,4 1,8 2,1 2,1 2,7

m3/h 9.810 19.110 23.230 27.840 32.680 29.980

V/ph/Hz + T 400/3/50A 34,8 37,0 45,5 52,7 63,7 72,5A 123,2 152,0 211,4 233,1 249,0 284,5- 1"1/4 1"1/2 1"1/2 2" 2" 2"

-kW 1,5 1,5 1,8 1,8 3,0 3,0kW 3,0 3,0 3,0 4,0 4,0 5,5L 65 160 160 290 290 290

kW 8,0 10,5 12,3 14,0 18,0 21,2m3/h 1,38 1,81 2,12 2,41 3,10 3,65kPa 25 29 33 27 30 28

mm 1.780 2.430 2.430 3.080 3.080 3.080mm 990 990 990 990 990 990mm 2.075 2.155 2.155 2.155 2.155 2.175Kg 520 550 730 770 890 910

mm 1.780 2.430 2.430 3.080 3.080 3.080mm 990 990 990 990 990 990mm 2.075 2.155 2.155 2.155 2.155 2.175Kg 630 760 940 1.110 1.230 1.250

16

Technical data

ST VERSIONCooling capacity(1)Total compressors power input(1)Water flow(1)Pressure @ Pn(1)Cooling capacity(2)Total compressors power input(2)Water flow(2)Pressure @ Pn(2)Sound pressure(3)

Compressors type Semihermetic reciprocatingCompressors quantityIndipendent gas circuitCapacity steps

Fans type AxialFans quantityFans power inputTotal air flow

Power supplyMaximum absorbed currentStarting currentWater fittings

INTEGRATED SOLUTION Pump type CentrifugalStandard pump power inputIncreased pump power inputWater tank content

DESUPERHEATER (DS Equipment) Heat capacity (4)Water flowPressure drop

DIMENSIONS AND WEIGHT - BASE SolutionLenght (L)Depth (P)Height (H)Shipping weight

DIMENSIONS AND WEIGHT - INTEGRATED SolutionLenght (L)Depth (P)Height (H)Shipping weight

Note:(1) Condenser air 25°C - Evaporator water IN/OUT 20/15°C(2) Condenser air 32°C - Evaporator water IN/OUT 12/7°C (3) Sound pressure measured at 1 m in open field(4) Evaporator water 12/7°C - Desuperheater 40/45°C

R 290Natural

Gas




EKO.E 502 602 702 802 1002 1202 1402

kW 136,8 163,9 193,0 240,0 276,0 335,0 430,0kW 31,6 35,9 45,4 53,0 65,3 83,8 94,0

m3/h 23,5 28,2 33,2 41,3 47,5 57,6 74,0bar 2,5 3,1 2,5 3,2 3,1 2,8 2,5kW 110,9 133,3 157,0 195,0 224,0 272,0 350,0kW 32,0 36,2 45,9 53,5 66,0 84,6 94,9

m3/h 19,1 22,9 27,0 33,5 38,5 46,8 60,2bar 2,6 3,3 2,7 3,3 3,2 3,1 2,9

dB(A) 81 81 81 82 82 82 83

-n° 2 2 2 2 2 2 2n° 2 2 2 2 2 2 2n° 4 4 4 4 4 4 4

-n° 4 4 3 4 4 4 6kW 2,8 3,6 6,3 8,4 8,4 8,4 12,6

m3/h 37.117 41.410 51.000 79.000 74.400 77.200 124.000

V/ph/Hz + T 400/3/50A 84,9 103,9 128,8 148,8 176,0 226,4 244,9A 250,8 284,3 314,1 360,8 422,8 581,6 689,6- 3" 3" 3” 3” 3” 4” 4”

-kW 3,0 4,0 4,0 5,5 5,5 5,5 7,5kW 5,5 7,5 7,5 11,0 11,0 11,0 15,0L 500 500 500 500 500 500 500

kW 23,4 27,1 32,6 39,2 45,0 53,9 71,1m3/h 4,02 4,66 5,61 6,74 7,74 9,27 12,23kPa 30 22 25 26 31 33 28

mm 4.020 4.020 4.020 4.400 4.400 4.400 5.200mm 990 990 990 2.000 2.000 2.000 2.000mm 2.235 2.235 2.310 1.930 1.930 1.930 2.230Kg 1.380 1.500 1.580 1.650 1.800 1.940 2.380

mm 4.020 4.020 4.020 4.400 4.400 4.400 5.200mm 990 990 990 2.000 2.000 2.000 2.000mm 2.235 2.235 2.310 1.930 1.930 1.930 2.230Kg 1.980 2.100 2.180 2.250 2.400 2.540 2.980

17

Technical data

ST VERSIONCooling capacity(1)Total compressors power input(1)Water flow(1)Pressure @ Pn(1)Cooling capacity(2)Total compressors power input(2)Water flow(2)Pressure @ Pn(2)Sound pressure(3)

Compressors type Semihermetic reciprocatingCompressors quantityIndipendent gas circuitCapacity steps

Fans type AxialFans quantityFans power inputTotal air flow

Power supplyMaximum absorbed currentStarting current Water fittings

INTEGRATED SOLUTION Pump type CentrifugalStandard pump power inputIncreased pump power inputWater tank content

DESUPERHEATER (DS Equipment) Heat capacity (4)Water flowPressure drop

DIMENSIONS AND WEIGHT - BASE SolutionLenght (L)Depth (P)Height (H)Shipping weight

DIMENSIONS AND WEIGHT - INTEGRATED SolutionLenght (L)Depth (P)Height (H)Shipping weight

Note:(1) Condenser air 25°C - Evaporator water IN/OUT 20/15°C(2) Condenser air 32°C - Evaporator water IN/OUT 12/7°C (3) Sound pressure measured at 1 m in open field(4) Evaporator water 12/7°C - Desuperheater 40/45°C

R 290Natural

Gas




% 5 10 15 20 25 30 35 40°C -2,9 -5,6 -8,0 -10,3 -12,8 -15,8 -19,6 -24,4- 0,982 0,970 0,954 0,937 0,919 0,901 0,880 0,859- 0,983 0,969 0,955 0,940 0,923 0,908 0,894 0,877- 1,006 1,019 1,035 1,051 1,069 1,088 1,109 1,131- 1,022 1,042 1,060 1,077 1,095 1,112 1,132 1,152

°C -5°C 20°C 70°C 5°C 45

-5 -3 0 3 5 7 10 12 15

25 0,56 0,61 0,65 0,72 0,78 0,83 0,89 0,94 1,00

28 0,54 0,59 0,63 0,69 0,75 0,80 0,87 0,92 0,98

30 0,52 0,56 0,62 0,67 0,73 0,78 0,85 0,90 0,97

35 0,49 0,54 0,58 0,64 0,69 0,73 0,80 0,85 0,91

40 0,46 0,50 0,54 0,60 0,65 0,69 0,75 0,80 0,85

-5 -3 0 3 5 7 10 12 15

25 0,73 0,78 0,82 0,85 0,88 0,91 0,94 0,97 1,00

28 0,75 0,80 0,83 0,86 0,91 0,94 0,97 1,00 1,03

30 0,77 0,82 0,85 0,88 0,93 0,96 0,99 1,02 1,04

35 0,80 0,83 0,89 0,92 0,97 1,01 1,04 1,07 1,09

40 0,85 0,88 0,92 0,95 1,01 1,04 1,08 1,11 1,15

18

Correction factors and Operating limits

The “Eurokey Selection Software” is the best tool for getting easily and quite accurately the unit performances at different working conditions

than the nominal ones which are listed in the catalogue. However, by using the following correction factors and instructions how to use them,

it is easy to understand how the unit performs when the operating conditions change.

Ethylenic glycol (percentage by weight) Freezing point CPF - Correction factor Cooling capacity CPI - Correction factor Power input CPQ - Correction factor Evaporator water flow CPD - Correction factor Evaporator pressure drop

Minimum temperature OUT fluid in cooling (1) Maximum temperature IN fluid in cooling Maximum temperature OUT fluid in desuperheater (DS Equipment) Minimum temperature air condenser IN (2) Maximum temperature air condenser IN

NOTE:(1) For fluid production below 0°C please contact Euroklimat commercial department.(2) With stepped condensing control is possible to reach temperatures of -5°C; with modulating condensing control is possible to reach the temperature of -15°C.

Water and Ethylenic glycol mixture

NOMINAL CONDITIONS - Water: 20/15°C - Ambient air 25°C - Cooling capacity kW 136,8 (R1) - Power input kW 31,6 (P1)

Example: EKO 502

KPFCorrection fatctorCooling capacity

OUT water temperature (°C)

Minimum ethylenic glycol 20% Minimum ethylenic glycol 10% Water

Am

bien

t ai

rte

mpe

ratu

re (°

C)

KPICorrection fatctor

Power input

OUT water temperature (°C)

TAm

bien

t ai

rte

mpe

ratu

re (°

C)

Cooling capacity

Power input

REQUEST CONDITIONS - Water: 15/10°C - Ambient air 30°C - Ethylenic glycol 20%

Operating limits

RESULTS (R1) (KPF) (CPF) (R2) - Capacity: 136,8 x 0,82 x 0,937 = 105,1 kW (P1) (KPI) (CPI) (P2) - Power input: 31,6 x 1,08 x 0,940 = 32,1 kW




151

400/

3/50

+ T

1 14,6 28,7 117,1 1 0,9 1,8 1,5 4,3 3,0 6,5 17,0 34,8 123,2 3x63A

201 1 15,7 30,2 145,2 2 0,7 1,2 1,5 4,3 3,0 6,5 18,6 37,0 152,0 3x63A

251 1 19,2 36,9 202,8 2 0,9 1,8 1,8 5,0 3,0 6,5 22,8 45,5 211,4 3x63A

301 1 23,3 44,0 224,4 3 0,7 1,2 1,8 5,0 4,0 8,4 27,2 52,7 233,1 3x63A

351 1 28,3 53,9 239,2 3 0,7 1,2 3,0 6,1 4,0 8,4 33,4 63,7 249,0 3x80A

401 1 33,5 61,0 273,0 3 0,9 1,8 3,0 6,1 5,5 11,3 39,2 72,5 284,5 3x125A

502 2 19,2 36,9 202,8 4 0,7 1,2 3,0 6,1 5,5 11,3 44,2 84,9 250,8 3x125A

602 2 23,3 44,0 224,4 4 0,9 1,8 4,0 8,7 7,5 15,3 54,2 103,9 284,3 3x125A

702 2 28,3 53,9 239,2 3 2,1 4,1 4,0 8,7 7,5 15,3 66,9 128,8 314,1 3x160A

802 2 33,5 61,0 273,0 4 2,1 4,1 5,5 10,4 11,0 22,3 80,9 148,8 360,8 3x200A

1002 2 40,8 74,6 321,4 4 2,1 4,1 5,5 10,4 11,0 22,3 95,5 176,0 422,8 3x200A

1202 2 54,4 99,8 455,0 4 2,1 4,1 5,5 10,4 11,0 22,3 122,7 226,4 581,6 3x250A

1402 2 55,1 103,3 548,0 6 2,1 4,1 7,5 13,7 15,0 29,0 130,3 244,9 689,6 3x315A

19

Electrical dataM

od

el Powerinput

Compressor Fans MotorStandard

Motor Pumpincreased

Motor PumpTOTAL UNIT

(*)

Sec

tio

nn

.(*

)

QTY FLI FLA LRA QTY FLI FLA FLI FLA FLI FLA FLI FLA LRA

[n°] [kW] [A] [A] [n°] [kW] [A] [kW] [A] [kW] [A] [kW] [A] [A]

NOTE:- (*) Considered for total unit (with standard pump)- QTY = Quantity- FLI = Maximum power input- FLA = Maximum absorbtion current- LRA = Locked rotor current

- Please comply with the indications about the phase, neuter and ground conductors connections. The feeding line shall have a proper protection against the short-circuits and the leakages on the groud, apt to section the instalment if compared to the different users.

- The feeding voltage shall be included between -10% and +10% of the value indicated on the identification label place on the unit (for triphase unit there is a disproportion between the phases equal to 3%). Should these parameters not be respected, please get in touch with the local supplier of electricity.

- For the electrical connections, please make use of the cables in compliance with the existing current rules in the land of the unit installation.

- Please install (near the unit if possible) a proper protection device together with a sectioning of the wiring network with delayed particular curve, with a contacts opening of 3mm at least and proper power of interruption and differential protection.

- Whenever the devices would not be visible from the unit, they must be closed through a padlock.

- You must carry out an effective connection on the ground.




E

T

UP

UT

CN

CM

HP

LP

F

I

VS

VE

R

MP

J

J

VC

SM

SA

SC

SR

VT

20

Refrigerant-hydraulic schema

EKO.E - 1 compressor / 1 circuit

MP Microprocessor

TD Pression transducer

HP Hign pressure switch

LP Low pressure switch

CM Compressor

VE Expansion valve

VS Solenoid valve

I Liquid indicator

F Gas filter

R Interception valve

E Evaporator

J Antivibration joint

PD Differential switch

FL Flow switch

SM Outlet evaporator water temperature probe

SR Inlet evaporator water temperature probe

SA Outlet free cooling water temperature probe

T Tank

UP User pump

CN Condenser

VC Condenser fan

SC Condenser probe

UT User

VT Safety valve




E

T

UP

UT

CN

CM

HP

LP

F

I

VS

VE

R

MP

J

J

VC

SM

SA

SC

SR

CM

HP

LP

J

J

VT VT

21

Refrigerant-hydraulic schema

EKO.E - 2 compressors / 2 circuits

MP Microprocessor

TD Pression transducer

HP Hign pressure switch

LP Low pressure switch

CM Compressor

VE Expansion valve

VS Solenoid valve

I Liquid indicator

F Gas filter

R Interception valve

E Evaporator

J Antivibration joint

PD Differential switch

FL Flow switch

SM Outlet evaporator water temperature probe

SR Inlet evaporator water temperature probe

SA Outlet free cooling water temperature probe

T Tank

UP User pump

CN Condenser

VC Condenser fan

SC Condenser probe

UT User

VT Safety valve




22

Desuperheater

One of the available equipment for this series of units is a partial heat recovery identified with the initial “DS”. This is better defined as “DeSu-

perheater” since it allows to recover part of the condensation heat that normally is dissipated through the main condenser. Thanks to the “DS”

equipment it is possible to heat water for post-heating, domestic hot water or other purposes by an additional heat exchanger. This system is

very attractive since it provides the heat totally free of charge: it takes advantage of the desuperheating phase of the hot gas thus not modifying

the gas condensation phase and then keeping (even improving really) the unit operating conditions of the refrigerant circuit. Due to this feature,

the desuperheater has a capacity limit that can be roughly estimated at a maximum of about 20% of the total cooling capacity but this value is

highly variable depending on the type of equipment, the unit working conditions and the heat recovery working conditions as well. Really the

gas compressed to a very high temperature is flowing in the heat exchanger and this could allow the hot water to reach even 70-75 °C but in

this case the recovered capacity may not exceed 5% of the total condensing heat.

The construction layout is relatively simple as it appears from the figure: it consists in inserting a brazed plate heat exchanger (one for each

refrigerant circuit normally) in series and upstream of the main condenser. The water side controls and settings of the heat recovery are not

mounted on the unit but must be designed and carried out by the customer. However the refrigerant cycle is not affected when the desu-

perheater is not or only partially working because the heat not dissipated here is rejected directly and simply by the main condenser. Indeed,

using the desuperheater normally improves also the nominal operating conditions of the chiller as it is like to add more exchange surface to

the condenser.

Boiling water in case of total and prolonged lack of heat recovery is the unique issue to pay attention to. Depending on the control and settings

that the customer applies to the heat recovery water side, it may occur that, when stopping the circulation pump and / or intercepting the water

circuit towards the user system, the steady and limited in volume water reaches temperatures close to those of the hot gas which has just been

compressed and is directly in contact with the water through the desuperhater. As a consequence water might partially boil. This is definitely

to be prevented to avoid the operation of the safety devices that should be mounted on the user water circuit.

CP Compressor

RM Discharge cock

MA-MO-MB High/oil/low pressure gauges

GA-GM Suction/discharge flexible joint

PA-PO-PB High/oil/low pressure switch

DS Desuperheater

V1-V2 ON/OFF condensing control

CD Condensing coil

TF-RI Safety device/Valve

FI Dehydrating filter

IL-SL Humidity sight glass/ solenoid valve

VE Fan




23

Vibration isolation mounting (kit)

Among the accessories of the water chillers of this series, the antivibration mountings are provided in order to isolate any vibrations transmitted

to the unit’s bearing frame when the appliance is operating. These dampers can be of two types: rubber or spring. The choice depends on

the isolation performances requested: greater for the spring type and lower for the rubber ones. Obviously, those with greater isolation have a

higher cost and should be used only if clearly needed.

The antivibration mountings are supplied loose, in a separate kit since mounting them in the factory could cause serious damages due to

uncontrollable oscillations that would be created during loading/unloading and transport. Then they must be fitted to the unit’s base during

the installation phase.

The assembly operation of the antivibration mountings is very simple since the fixing holes are already prepared in the basement of the chiller

and the “nut / counternut” system on the support of the dampers makes really easy their installation. It can be seen from the figures that both

the rubber and spring type use the same tightening system. Once the dampers are fixed and the chiller is placed, adjusting the height is

possible by the control nut thus making sure that the unit is perfectly level. In the documentation supplied with the chiller, a drawing indicating

the weight distribution is included. It is possible that the dampers provided are of different types according to the weight features of the chiller;

in this case strictly following the provided plan is necessary. Once installed, a compression of the supports will be noticed; this is absolutely

normal and expected when sizing them.

SPRING VIBRATION ISOLATIONRUBBER VIBRATION ISOLATION




24

Interfacing with differents BMS controls

The BMS (Building Management System) is the system that manages the resources and the services available in a building. Normally they

are identified in the following sub-systems: HEVAC (heating, ventilation and air conditioning) control, fire control, access control, closed cir-

cuit video record, traceability of the staff and objects, lifting equipment, audio-video communication systems. The BMS makes the building

management easy by harmonizing the operation of all the controlled resources. The improvement consists of monitoring continuously the

status of the different systems, of their coherent control and of the opportunity to generate reports useful to improve the maintenance servi-

ces. There are several sistems of BMS on the market and the microprocessor of the units in this series BXK has various accessories and / or

configurations that allow machines to communicate all the information operation to these external controllers and centralized.

LonWorks serial card. PCO10000F0 card is used to interface to a LonWorks® network. The type of interface on the LonWorks® network

side is: PCO10000F0 - interface to FTT-10 A 78 kbs (TP/FT-10). The baud rate must be set to 4800.

BACnet RS485 interface board. Used to interface the pCO controllers with the BACnet™ and RS485 protocols, emerging standards in the

HVAC industry.

pCO Web Ethernet™ interface board (PCO1000WB0). Used to interface the pCO controllers with the BACnet™ and SNTP protocols,

emerging standards in the HVAC industry.

TREND serial board (PCO100CLP0). Provides communication with the TREND interface, a commonly-used building management system

in english-speaking countries.

CANbus board. Provides communication with a compatible external electronic device using the CANbus protocol.

RS232 serial card. PCO100MDM0 card is used to interface directly to a standard HAYES modem. The following hardware signals can be

managed: output, “request to send” (RTS) in parallel to “data terminal ready” (DTR); input, “carrier detect” (CD). The maximum baud rate is

19200 baud.

RS485 MODBUS serial card. Used to interface directly to an RS485 network with optical isolation. The maximum baud rate available is

19200 baud (settable via software).




25

Connecting a series of units

This allows the timed rotation of a unit in stand-by within a group of maximum 6 units. If one of the machines in operation goes into an alarm

condition, the unit in stand-by is activated. This is done using a digital input and output which, via the “master” (unit 1), sends the command

to activate and deactivate the unit in stand-by (the command is updated every 10 minutes).

The diagram shows how all the electrical panels can be the same, and only during installation does connection have to be made, as in figure,

using a three-pole cable.

During installation the following three points must be kept in mind:

1. one (and only one) machine must be set as master.

2. itisrecommendedtoterminatethelinewitharesistor(Rt),value220Ω5Wor470Ω4W(CARELcode5729656AXX).

3. check that G0 on the transformers is not earthed, to avoid unwanted current at G0.

For operation, parameters H2, H3, H4, HA must be set:

H2 Number of machines

H3 Units adress

H4 Rotation time

For more details or to connecting a series of units with UPGRADING ELECTRONIC CONTROL please contact the commercial department of

Euroklimat.




151

1780990

2075

1000

1000

1000

26

Dimensional drawing

FRONT VIEW BACK VIEW

TOP VIEW

SIDE VIEW

OPERATING SPACE

OPERATING SPACE

OPERATING SPACE

WATER SIDECONNECTIONS




2430990

2155

1000

1000

1000

201 - 251

27

Dimensional drawing

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OPERATING SPACE


SIDE VIEW BACK VIEW

OPERATING SPACE




301 - 351

990

2155

3080

1000

1000

1000

28

Dimensional drawing

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OPERATING SPACE

OPERATING SPACE

OPERATING SPACE






401

990

2175

3080

1000

1000

1000

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Dimensional drawing

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OPERATING SPACE

OPERATING SPACE




4020

1000

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1000 1000

990

2235

502 - 602

30

Dimensional drawing

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OPERATING SPACEOPERATING SPACE

OPERATING SPACE




990

2310

4020

1000

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1000

702

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Dimensional drawing

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OPERATING SPACE


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OPERATING SPACE

OPERATING SPACE




4400 2000

1930

1500

1500

1000

802 - 1002 - 1202

32

Dimensional drawing

TOP VIEW

OPERATING SPACE


SIDE VIEWBACK VIEW

OPERATING SPACE

SIDE VIEW

OPERATING SPACE




5200 2000

2230

1500

1500

1000

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33

Dimensional drawing

TOP VIEW

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SIDE VIEWBACK VIEW

OPERATING SPACE

SIDE VIEW

OPERATING SPACE




34 Heronhill - for all your Euroklimat requirements



35 Heronhill - for all your Euroklimat requirements


Euroklimat S.p.A. Via Liguria 8 - 27010 Siziano (PV) Codice Fiscale &Partita Iva 01808400186 tel.(+39).0382610282 r.a. fax.(+39).0382617782www.euroklimat.it email: [email protected]

EKO

_1-1

4_K_

rev1

_EN

G



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