WSA Techno - Cosmotec | Industrial cooling · 2-ways valves controlled by SEC.blue, to ensure the maximum yield, minimizing the compressor opera-tion time and reducing the running

AIR COOLED CHILLER

WSA Techno

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Your Future

is already

in our

Mind

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4

5

Index

Versions..................................................................................................................................................................6Applications ........................................................................................................................................................ 7Dimensions ..........................................................................................................................................................8Options ....................................................................................................................................................................9Screw Compressor ......................................................................................................................................10Condenser ...........................................................................................................................................................11Expansion valve.............................................................................................................................................. 12Evaporator .......................................................................................................................................................... 13Structure .............................................................................................................................................................. 14Electrical Panel ...............................................................................................................................................15Hydraulic Kit ......................................................................................................................................................16Display Touch ...................................................................................................................................................18Movements ........................................................................................................................................................19SEC.blue Electronic Control .................................................................................................................20Low Noise ...........................................................................................................................................................21Free Cooling .....................................................................................................................................................22EER - ESEER - IPLV ......................................................................................................................................23Quality................................................................................................................................................................... 24Refrigeration Circuit ................................................................................................................................... 25

8 fans ...................................................................................................................................................................2512 fans ................................................................................................................................................................2616 fans ................................................................................................................................................................2724 fans ............................................................................................................................................................... 28

Free Cooling Circuit ................................................................................................................................... 298 fans .................................................................................................................................................................. 2912 fans ................................................................................................................................................................3016 fans ................................................................................................................................................................ 3124 fans ................................................................................................................................................................32

Encoding .............................................................................................................................................................33Working limits ................................................................................................................................................. 34Free space ........................................................................................................................................................ 35Pumps curves ................................................................................................................................................. 36Technical data ................................................................................................................................................ 39

Subject to change without notice

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Low NoiseWSA Techno is an highly silenced unit, thanks to the adoption of acoustic insulations, specifically designed and placed in the compressor compartment (ISO 3744).In order to maximise the noise reduction the maximum speed of the fans is limitated. The optimization of the coils/fans group allows to limit the cooling capacity reduction compared to the standard version.Available for all sizes of WSA Techno.

StandardThe Techno range expands the series of high efficiency chillers for industrial, IT and comfort applications, made by COSMOTEC. WSA are chillers for outdoor installation, specifically designed to have high perfor-mance with small footprint.Efficency, strength and reliability at COSMOTEC levels.

Versions

Outdoor installationWSA Techno is designed to be used on any outdoor installation. The electrical panel, with IP54 protection, guarantees an adequate security for electric and electronic components. The different options allow a further extension of the operating limits both at low and high temperatures, with enhanced protection for highly corrosive environments.

Gas R134aAll units of the WSA Techno range use refrigerant gas R134a, which ensures an higher cooling capacity with low footprint of the machine.The R134a assures a very low environmental impact, low impact on the ozone and a greenhouse gas coefficient lower than the usual refrigerants.

Free CoolingThe free cooling circuit is composed by condensing coil with copper tubes and aluminium fins. Two 2-ways valves controlled by SEC.blue, to ensure the maximum yield, minimizing the compressor opera-tion time and reducing the running costs by lowering pressure losses.There is a Cataphoresis treatment on the condensing coils, in order to prevent corrosion due to stray currents.When the ambient temperature drops down, the SEC.blue controller partialises even further the 2-ways valves and the fans, guaranteeing the correct thermal load management.Due to the need to maximize the air flow through the batteries.The “Super Silent” version on Free Cooling is only uppon request.

All versions have:

The right solution for you

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Aerospace

Automotive

Plastic

Automation

Renewable Energy

Precious Metals

Hospital

Applications

One technology, many uses

Air ambient temperature: -20°C / +45°C Water inlet temperature: +0°C / +30°C Water outlet temperature: -5°C / +25°C

Process Cooling & Industrial applications

Comfort

Air ambient temperature: -20°C / +45°C Water inlet temperature: +12°C / +22°C Water outlet temperature: +7°C / +18°C

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1125 - 1260 kW (1)

845 - 910 - 1030 kW (1)

630 - 670- 740 kW (1)

370 - 480 kW (1)

24fans

16fans

12fans

8fans

(1) Air ambient temperature: +35°C Water inlet temperature: +12°C Water outlet temperature: +7°C

Dimensions

One size for every need

Height 2473 mm

Lenght 2278 mm

Depth 4255 ÷ 4635 mm

Height 2473 mm

Lenght 2278 mm

Depth 6960 mm

Height 2473 mm

Lenght 2278 mm

Depth 8120 ÷ 8880 mm

Height 2473 mm

Lenght 2278 mm

Depth 11980 mm

Weight 4900 ÷ 5800 kg

Weight 5000 ÷ 6400 kg

Weight 6250 ÷ 8900 kg

Weight 7640 ÷ 11900 kg

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SoftstartDevice for reducing mechanical stress during compressor start-up. The device partialises the starting current of the compressors by reducing the stress on the power supply line and preserving the compressors’ components.

Automatic transfer switchThree-phase switch without neutral, with automatic or manual control (by key). Functions dedicated to network/backup unit installation, with checking function for the switching capability verify and backup unit test. Voltage and frequency control. Switch installed inside the electrical panel. Auxiliary contacts to report the line switching.

Magnetotermic switch (A.C.B.)The magnetothermic switches guarantee an high protection against inrush current, which can damage the downstream component. Thanks to the magnetothermic switch after the intervention it’s possible to restart the chiller without replace the components.

Energy meterMeter to control the electric energy required by the chiller. LCD display to visualize current values, voltage, instant values of the 3 phases, average and maximum historical values. Remote control data through ModBus RTU.This component is installed inside the electrical panel.

Power factor corrections capacitorsThe power factor correction capacitors can take back to a 0.95 cosφ the phase displacement, which can be caused by magnetic fields. The capacitors are managed by the SEC.blue electronic control.

Flow switchComponent that verifies the flow of the fluid in the circuit. Installed on the return pipe. The flow switch is electrically connected to the SEC.blue control and reports the absence of fluid circulation, preventing damage to the hydraulic components.

Antifreeze heatersElectric heaters controlled by the SEC.blue prevent the icing of the fluid inside the hydraulic circuit. In case of particularly harsh work conditions the use of a correct amount of ethylene or propylene glycol is suggested.

Coils treatment Protective cataphoresis or epoxy treatment in order to enhance the coils resistance in aggressive environments. The cataphoresis treatment is a standard on the condenser coils in Free Cooling version.

Closing GridThe protective grids protect the condensing coils, preserve the correct air flow and prevent access to the components. Made in zinc coated metal sheet painted with epoxy powders.Standard color: RAL 9005 paint smooth.

Supply without refrigerant gasIt is possible to ship the chillers without the hazardous refrigerant gas, in case of particular conditions of shipment. In these cases the gas is substitute by nitrogen. The refrigerant charges are reported on the nameplate.

ContainerizationThe chiller can be loaded into a 40 feet high cube container.

Anti-vibration mount springs, antisismicSupports specifically designed to bear the chiller weight and to avoid the transmission of vibrations to the underlying structure during operation.

Options

Made for you

Air filterThe metallic filters prevent the condenser clogging caused by the dust in the air. The filters are installed at the condenser inlet through two joint brackets.

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no.2

Screw Compressor

The Heart of the WSA Techno

Semi-hermetic ScrewThe heart of the COSMOTEC Techno range are the semi-hermetic screw compressors, specifically designed for air cooled refrigerant circuits. These compressors are able to compressing all the ecological refrigerant gases used by COSMOTEC. State of the art compressors, able to achieve high compression ratios with reduced consumption.Thanks to the compressor double screw system the gas is continuously compressed, allowing to maintain the rotation inertia of the compressor motor, avoiding overloads, electrical consumption peaks, reducing mechanical stresses, which are the primary cause of the reduction in the product life.

Sliding ValvesThrough a partialisation slide valve, regulated according to a 0-10 input, is possible to change continuously the refrigerant R134a compression, partialising the cooling capacity supplied.The correct compressor cooling is guaranteed by the refrigerant gas, which, in intake, flows through the rotor windings, maintaining the temperature within the limits provided by the supplier.

StartingA range of compressors with part-winding (WSA160-320) or star-delta (WSA360-640) start-ups are available, depending on the size of the chiller. In both cases to limit the locked rotor current and reduce the stress of the component, the compressor is started with a load of 25%, increased up to 100% after the achievement of the total motor torque.

Two CompressorsThe screw compressors can reach a high cooling capacity with just 1 or 2 compressors installed, while maintaining an high efficiency at partial loads.

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W

Condenser

Micro Channel

Aluminium

W-Shape

Indipendent circuits

For the best performance

W-Shape GeometryThe MicroChannel condenser coils are entirely made in aluminum and expressly designed and realized to maximize the yield of the chillers, preserving reduced dimensions. The W-shape geometry has an angle designed, tested and proven specifically to avoid points of failure of the batteries and the imbalance of the refrigerant circuits. The use of a W-shape geometry ensures an optimal air flow through the coils, allowing to reduce the noise of the refrigerator both in Chiller or Free Cooling mode.

Axial FansThe proper air flow is guaranteed by the axial fans with phase-cutting partialization, which takes in fresh air from the longitudinal sides of the chiller through the condensers, and push the heated air upwards.The fans are handled by SEC.blue electronic control to maintain the best condensing value in every cooling circuit. The fans can’t be canalized.

Air flow:

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Expansion valve

The evaporation of the refrigerant gas into the cooling circuits is guaranteed by the latest generation electronic thermostatic valves. Together with appropriate pressure switches, temperature probes and the electronic controller SEC.blue the valves optimize the thermal exchange into the evaporator, preserving the upstream and downstream components from high temperatures or icing.The operating and calibration logic of the electronic thermostatic valves lies in the electronic controller SEC.blue.

Quick start up with super heater control in order to achieve the full cooling capacity in less time.

Wider working range operating limit increased compared to the mechanical expansion valve

Optimization of the exchange surface thanks to the correct evaporation of the liquid in each conditions.

Compressor protected against the back liquid with pressure switch and probe installed on the lower line guarantees the complete transition to gas of the refrigerant before the inlet in the compressor.

Humidity and liquid sightglass incorporated to check the status of the refrigerant

Safety capacitor for shut-down in case of failure of power supply, allows the complete closure of the valve to avoid the return of the liquid into the evaporator.

Indipendent for each cooling circuit properly managed by electronic controller SEC.blue

PLUS

Quality in every component

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Evaporator

For the best performance

The Shell and tube evaporator is composed by: small inner tubes made by copper, separation baffles for a better heat exchange refrigerant-fluid, outer casing carbon steel coated with suitable thermal insulation, in order to assure the entire range of operation of the chiller.Double cooling circuit and mono circuit water side, disposed in countercurrent flow to maximize the heat exchange between the refrigerant and the fluid, while keeping pressure losses very low on both circuits.Victaulic® water connections for quick installation of the chiller.

Two Refrigerant circuits (pipes) to maximize the heat exchange from the water to the gas.

One Hydraulic circuit (casing) with very low pressure drop

Fully Insulated with adequate thickness with special glass fibre, resistant to the atmospheric agents and U.V., and to reduce the yield loss.

Differential Pressure Switch as standard, to check the flow through the evaporator, to guarantee its safety against icing and stops the chiller functions in case of alarms

Victaulic® Connections for a quick installation

Carbon Steel outer casing + Copper pipes

PLUS

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Structure

Reticular full metal structure to ensure the resistace of the structure also during the movement operations

Epoxy powder for all the metal structure

Corrosion resistant parts guarantee for all the fixing small parts

Outdoor installation

Lifting plates to handle safely the chiller

Predefined Anti vibranting Holes to install correctly the anti vibranting kit

Made to be strong

The WSA range is produced with a bearing frame of zinc-coated metal sheet painted with epoxy powders; fixing small parts in corrosion resistant steel. Zinc-coated metal sheet painted with epoxy powders closure plugging for condenser, compressors compartment and electrical panel. Yellow plates, properly designed and positioned, are attached and identified to safety lifting with cranes the entire refrigerator. These plates, fixed by screws, can be removed after the positioning or to insert the chiller into a container.Predefined holes in the support structure allow the installation of anti-vibration mounts

Standard Colour RAL 7035, orange peel

PLUS

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Electrical Panel

Degree of protection IP54 for outdoor installation

Big dimensions to include all the available options

Triple Door

Display with transparent protection panel to manage the chiller

General lock door to guarantee the safety of the user

FEATURES

Protection & Accessibility

Electric panel with big dimensions to allow installation of all options designed, installed in the front side of the chiller.Triple door, ventilated, equipped with external power switch and display to manage the chiller operating.Three-phase power supply 400V/50Hz or 460V/60Hz, secondary supply at 230V with internal transformer. The safety of the motors is guarantee by fuses and thermal protector.The fans speed is managed through a cutting phases devices, by the electronic controller SEC.blue. The cutting phase devices are installed outside of the electrical panel.The inlet of the wires is from the bottom of the cabinet, through specific removable panels

Components and realization in accordance with CEI EN 60335-2-40, CEI EN 61000-6-1/2/3/4 standards and EMC2004/108/CE regulation.

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TT7

TT4 PDZAL

3

M

MHH

MHH

Hydraulic Kit

Hydraulic circuit composed of painted steel piping, covered in elastomeric insulating material with added glass fib-er, Shell and tube evaporator, charge/discharge/vent valves, Victaulic© connections. The optionals allow to deliver the chiller also with: � 1 pump with shut-off valves upstream and downstream for easy maintenance � 1 pump with independent inverter controller. Shut-off valves upstream and downstream � 2 pumps in redundancy, each with shut-off valves upstream and downstream � 2 pumps in redundancy, each with independent inverter controller � antifreeze heaters installed on the main components of the hydraulic circuit

The inverter is delivered by standard with constant pressure regulation. It’s also available with constant flow regulation (special request).

With n.1 PumpManaged by electronic controller SEC.blue.The pump is available with InverterPump installed before the evaporator.

With n.2 PumpsWhen there are 2 pumps they are in redundan-cy: one is operating and the other is stopped. In case of failure of the first pump the second one turns on.Each pump has shut-off valves upstream and downstream for easy maintenance.Managed by electronic controller SEC.blue.

Only EvaporatorStandard selection for all versions.

Your project, our solution

WATER OUT WATER IN

SHELL & TUBES EVAPORATOR

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LOW NOISE

FansConnection

Diameter

WSA160 8 6" Victaulic®











ConnectionsQuick Victaulic© grooved end piping system to ensure: � easy maintenance of the connection � simple alignment of users pipes and chiller � flexibility thanks to the shape of the joint is possible to secure the resistance to thermal expansion, slight misalignments and seismic stress

� noise and vibration attenuation by isolating the transference of vibration at each joint � rigidity to torsional and flexural loads

As options are available Victaulic© adapters to flanged or threaded connection.

BASE

FansConnection

Diameter












HYDRAULIC KIT

FREE COOLING

FansConnection

Diameter












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Display Touch

The user interface of the electronic controller SEC.blue is a 7” colour touch screen display, with synoptic useful menus. All the data of the chiller, warnings and alarms will be shown on the display.The menus are available in many languages: Italian, German, English, French, Russian, Spanish.

Example of the synoptics menus:

Language

Free Cooling

Circuit n°2

Circuit n°1

7” TFT-LCD graphical color display

800 x 480 px resolution

Frontal protection IP66 for outdoor installation

Operating limits from -20 up to +60°C

Resistive Touch Screen

LED backlight

Buzzer

4 diagnostic LEDs on pannel

Main features

Full control one touch away

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Movements

Where you need it, easily

HandlingThe WSA chillers can be handled with cranes or ropes and sling lifting. The chiller is equipped with special lifting yellow plates, purposely designed to handle all the weight of the chiller.

ContainerizationWSA can be put in 40 feet high cube container. To do this is necessary to install two spars under the chill-er after have remove the lifting yellow plates to reduce the dimensions and gain more movement space.

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The “mind” of the COSMOTEC Techno chiller is the SEC.blue electronic control, developed by COSMOTEC to achieve the best performance from every component. New functions have been implemented in the COSMOTEC Techno range in order to obtain the best management of the new compo-nents. Memory and calculation speed are increased, allowing a better and faster control of all the components and preserv-ing the durability of the units. The numerous functions and parameters are summarized in a few simple steps and screens, which allow the user to easily keep under control the chiller correct operation. A 7” liquid crystal display with touch screen acts as an interface between the user and the chiller. The display reports all the information on: operation status, working time, alarm history and alarm signals. Furthermore it allows to start, stop and modify the chiller operation.

SEC.blue Electronic Control

SEC.blue Electronic Controller manages:

� Compressors = start, switching off, within the limits provided by the supplier

� Fans = depending on the power requested and on the active function (chiller, Free Cooling) sets the fans speed, to guarantee the maximum yield with lesser noise and electric consumption

� Electronic Thermostatic Valves = partialises the refrigerant evaporation to obtain the requested power with the lesser electrical consumption

� Fluid side pumps (where expected) = the electronic control manages the redundancy in case of installation of 2 pumps, in order to maintain the working time of the pumps assimilar as possible.

� Free Cooling circuit = partialising the 3-ways valve, it takes advantage of the entire cooling capacity recoverable from the ambient air.

SEC.blue Electronic Controller is equipped with the following pre-loaded functions:

� Sequencing = to connect through a specific line more chillers and manage the components as a unique chiller

� Emergency Cooling = to activate the chillers in the same line, in case the active chiller cannot make up for the overload of the user.

� Redundancy = activates alternatively the chillers and guarantees the service continuity in case of fault of a chiller.

� ModBus RTU = to manage remotely the chiller through standard interfaces

� STULZ Protocol = to connect the chiller to the STULZ supervision components

� Unloading = guarantees the chiller partialised operation even at high temperatures

� Antifreeze

The Mind

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880 rpm

0 rpm

670 rpm

Low Noise

In the WSA Techno the noise can be made by the compressors and the air flow through the condensers. It’s possible to reduce the noise level (about -10 dB) selecting the Low Noise Version of WSA Techno.

The noise is reduced with the following solutions:

Acoustic IsolationIn WSA Techno a textile fibre of polyester vane cover each compressor and the pumps.The vanes are made by metal sheet powdered in the same colour of the chiller. The vane allow the complete access to the compressors electrical box.

Fan speed reductionTo reduce the noise caused by the flow of the air through the exchangers, the fans speed is reduced moving the electrical connections from Delta to Star.This solution reduces the speed approximately about 30%. This requires a greater dimension of the condenser coils to achieve the same cooling capacity of the standard version.

STANDARD versionFREE COOLING version

LOW NOISE version

Silent, whenever needed

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Temperate climateIn temperate climates north and south of the equatorial zone, the energy-saving advantages of Indirect Free Cooling can be fully exploited. Electricity consumption for data center air conditioning will drop by up to 60%.

Free Cooling

The Free Cooling circuit is composed by coil with copper tubes and aluminium fins. Two 2-ways valves, controlled by SEC.blue, ensures the maximum yield, minimizing the compressor operation time and reducing the running costs.Cataphoresis treatment on the condensing coils, in order to prevent cor-rosion due to stray currents.At about 0°C is obtained the total heat recovery from the ambient air: the entire cooling capacity is supplied by the free cooling coils. When the ambient temperature drops down, the SEC.blue controller partialises even further the 2-ways valves and the fans, guaranteeing the correct thermal load management. Due to the need to maximize the air flow through the coils, is not possi-ble to combine free cooling to the “Super Silent” version.

Chiller ModeDuring the summer the air temperature is too high to exchange with the water, then the 2-way valves close the Free Cooling and the water goes directly to the evaporator. The chiller cools the water.

Mix ModeThe valves allow the passage of the water through the Free Cooling coils to exchange some heat. The rest of the heat is removed by the chiller. Due of the fact that the fans are managed first to maximize the yield of the cooling circuit, if is possible one cooling circuit is totally turned off to maximize the Free Cooling yield.

Free Cooling ModeWhen the temperature reach about 0°C the cooling capacity of the Free Cooling coils is at the maximum. The chiller is stopped and the water heat is all exchanged with the ambient air. The energy is used only to run the fans. That’s the way to reduce a lot of energy and the and operating cost.

Energy and Money saving

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WSA Techno chillers is developed to cover an entire range of applications (from process industry to data centers). The Techno units are designed for a high energy class (Class A or B) or to work in extreme environmental conditions. They also come in very precise configurations with temperature controls dedicated to the application.

In almost all applications, the thermal load and ambient temperature conditions are highly variable. WSA Techno units closely match all environmental and load conditions, achieving a high seasonal efficiency (ESEER) – even high-er than 5. High ESEER values lead to significant energy savings.

EER - ESEER - IPLV

IPLV = 0.01 x EER100% + 0.42 x EER75% + 0.45 x EER50% + 0.12 x EER25%

IPLV: Integrated Part Load ValueThe Integrated Part Load Value (IPLV) is a performance characteristic developed by the Air-Conditioning, Heating and Refrigeration Institute (AHRI). It is most commonly used to describe the performance of a chiller capable of capacity modulation. Unlike an EER (Energy Efficiency Ratio) or COP (coefficient of per-formance), which describes the efficiency at full load conditions, the IPLV is derived from the equipment efficiency while operating at various capacities.

ESEER: European Seasonal Energy Efficiency RatioThe seasonal energy efficiency index is a parameter that indicates the seasonal efficiency of an air conditioner or a refrigerator group. The parameter is defined by the Eurovent Certification Company.

ESEER = 0.03 x EER100% + 0.33 x EER75% + 0.41 x EER50% + 0.23 x EER25%

EER: Energy Efficiency RatioThe Energy Efficiency Ratio (EER) of a particular cooling device is the ratio of output cooling energy to input electrical energy at a given operating point. EER is generally calculated using a 35°C outside air tem-perature and an inlet water temperature at 12 °C, outlet water temperature at 7°C.

EER = Cooling CapacityW7L35 / Power consuptionW7L35

Energy Efficient in every season

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Quality

Maximum ReliabilityThe WSA Techno units are designed to guarantee the integrity during the transport both on road and in container, thanks to their sturdiness and flexibility. The components assembly is realized to ensure the maximum reliability and accessibility during the maintenance.The double refrigerant circuit with semi-hermetic screw compressors guarantees the best performance at different loads, paying particular attention to intensive uses (h24/365) and providing extra durability.

COSMOTEC QualityAll the chillers are designed and produced in compliance with:

� UNI EN ISO 9001: Quality Management System, � UNI EN ISO 14001: Environmental Management � 2006/42/EC: Machinery Directive � 2006/95/EEC: Low Voltage Directive � 2004/108/EEC: EMC Directive � 97/23/EC: Pressure Equipment Directive � EN 378-1, 2, 3, 4: Refrigerating systems and heat pumps � EN ISO 12100 -1, 2: Safety of machinery � EN ISO 13857: Safety of machinery - Safety distances � EN 60204 -1: Safety of machinery - Electrical equipment � EN 61000-6-2: Immunity for industrial environments � EN 61000-6-4: Emission standard for industrial environments

In all phases of design and production the compliance with these standards and directives are checked by an independent quality management.

Components and TestThe components installed in the COSMOTEC Techno are from well-know manufacturers, and sampling controlled at the arrival of the shipment by the Quality department.The finished chiller undergoes a function and leak tests, including:

� Visual inspection of the correct assembly � Leakage test with detector of the cooling circuits � Leakage test of hydraulic circuit � Programming and setting the electronic controller SEC.blue. � Control of the calibration of sensors and probes � Functional test and alarm check � Unit labeling, documents and complementary material

The certificate is included with the documentation pack.

Certified Value

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Refrigeration Circuit 8 fans

Simple, complete, efficentLegend

SYMBOL DESCRIPTION

refrigerant circuit

water circuit

signal line

lift check valve

disconnectable joint

M semihermetic screew compressor

Shell and tube heat exchanger

vessel

H manual valve disconnectable

filter

TCE electronic expansion valve

TT temperature transmitter

PZHH safety pressure cut out

PDZAL differential pressure switch

Mmotorized valve

disconnectable check valve

heat exchanger with fan

M centrifugal pump with electric motor

safety check valve

REanti freeze heater

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12 fans REFRIGERANT CIRCUIT

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SHELL & TUBES EVAPORATORPD

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Free Cooling Circuit 8 fans

Energy and Money saving

30

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MT1

7

MT1

8

SC7

SC8

MT1

0

MT1

1

MT1

2

12 fans FREE COOLING CIRCUIT

31

HH

HH

HH

HH

WAT

ER O

UT

WAT

ER IN

TT 7 TT 4RE


WAT

ER IN

M

M

TT 5

TT 3

PDZA

L 3

SC1

SC2

MT1

4

MT1

5

MT1

6

MT1

7

MT1

0

MT1

1

MT1

2

MT1

3

SC3

SC4

SC5

SC6

MT2

2

MT2

3

MT2

4

MT2

5

MT1

8

MT1

9

MT2

0

MT2

1

SC7

SC8


32

HH

HH

HH

HH

HH

H

WAT

ER O

UT

WAT

ER IN

TT 7 TT 4RE


WAT

ER IN

M

M

TT 5

TT 3

PDZA

L 3

MT1

8

MT1

9

MT2

0

MT2

1

SC5

SC6

SC1

SC2

MT1

4

MT1

5

MT1

6

MT1

7

MT1

0

MT1

1

MT1

2

MT1

3

SC3

SC4

MT3

0

MT3

1

MT3

2

MT3

3

SC11

SC12

SC7

SC8

MT2

6

MT2

7

MT2

8

MT2

9

MT2

2

MT2

3

MT2

4

MT2

5

SC9

SC10


33

Encoding

All in a readable code

Type

A Air cooled

Liquid chiller

S1046SW A 0 0 0 0A1° 2° 3° 4° 5° 6° 7° 9°

C8° 10° 11° 12° 13° 14°

Compressor

1 Standard version

2 High temperature

Version

C Chiller

DChiller with cataphoresis condensingcoils

F Free Cooling

GFree Cooling with epoxy coatedcoils

IFree Cooling with cataphoresiscoated coils

Sound level

N Standard

S Low Noise

Hydraulic circuit

0 without pump and tank

1 one pump

2 two pumps

3 one pump with inverter

4 two pumps with inverters

n° digit n° digit

Cooling Capacity

160 376 kW (1) 320 738 kW (1)

220 187 kW (1) 360 844 kW (1)

250 570 kW (1) 380 911 kW (1)

280 630 kW (1) 440 1032 kW (1)

300 672 kW (1) 480 1122 kW (1)

(1) at 50 Hz, W7L35 640 1260 kW (1)

Power supply

A 400 V / ~3 / 50 Hz

B 460 V / ~3 / 60 Hz

Heat recovery

0 None

D Economizer

T Total recovery

Option (change accordingly to the selected options)

015°

34

AB

CD

E F

H

G

-5 0 5 10 15 20 25

-40-18

+5

Working limits

DWT - Supply Water Temperature in °C, with ∆T = 5 K

AT

- E

xte

rnal

Air

Te

mp

era

ture

in °C

In Free Cooling version the minimum AT valued is set at -20°C, depending on the electronic control. WARNING: Below AT +2,5°C is advisable to use antifreeze mixture.

Ethylene glycol Propylene glycol

10% 20% 30% 40% 10% 20% 30% 40%

Freezing temperature [°C] -3,9 -8,9 -15,6 -23,4 -3,3 -7,8 -12,2 -20,6

Cooling capacity

Correction factors

0,997 0,990 0,984 0,977 0,993 0,985 0,974 0,962

Input power 0,999 0,997 0,996 0,994 0,999 0,996 0,993 0,989

Water flow 1,014 1,033 1,068 1,117 0,989 1,009 1,017 1,040

Pressure drop water side 1,07 1,16 1,30 1,48 1,04 1,14 1,23 1,37

Multiply the correction factor in this table for the value in Data Sheet

Correction Factors

Wide applicationAT VALUES [°C]

A B C D E F G H

BA

SE

WSA160 50 55 52 55 -6 -10 -10 48

WSA220 46 53 50 53 -10 -10 -10 44

WSA250 51 56 53 55 -4 -10 -10 49

WSA280 49 55 52 54 -6 -10 -10 47

WSA300 47 54 51 53 -8 -10 -10 45

WSA320 51 56 53 55 -6 -10 -10 49

WSA360 48 54 51 54 -8 -10 -10 46

WSA380 47 54 51 53 -7 -10 -10 45

WSA440 45 52 49 52 -10 -10 -10 42

WSA480 50 56 53 55 -5 -10 -10 48

WSA640 - - 51 54 -10 -10 - 45

LOW

NO

ISE

WSA160 44 51 48 50 -6 -10 -10 44

WSA220 39 47 45 48 -10 -10 -10 37

WSA250 45 52 49 51 -4 -10 -10 43

WSA280 42 50 48 50 -6 -10 -10 41

WSA300 39 48 46 48 -8 -10 -10 38

WSA320 44 52 48 51 -6 -10 -10 40

WSA360 41 50 47 49 -8 -10 -10 39

WSA380 39 49 46 49 -7 -10 -10 37

WSA440 36 46 44 47 -10 -10 -10 35

WSA480 44 52 48 51 -5 -10 -10 42

WSA640 - - 45 50 -10 -10 - 37

FRE

E C

OO

LIN

G

WSA160 47 53 49 53 -6 -10 -10 45

WSA220 43 50 47 50 -10 -10 -10 41

WSA250 48 54 51 53 -4 -10 -10 45

WSA280 46 53 50 52 -6 -10 -10 43

WSA300 43 51 48 51 -8 -10 -10 42

WSA320 47 54 51 53 -6 -10 -10 45

WSA360 44 52 49 51 -8 -10 -10 43

WSA380 43 52 49 51 -7 -10 -10 41

WSA440 41 49 46 49 -10 -10 -10 39

WSA480 47 54 50 53 -5 -10 -10 45

WSA640 - - 49 50 -10 -10 - 42

Special request

Standard Version

Standar Version + heating elements + glycol

Standar Version + heating elements + glycol + wind stop

Low temperature version (LT)

LT version + heating elements + glycol

LT version + heating elements + glycol + wind stop

High temperature version (HT)

HT version + heating elements + glycol

HT version + heating elements + glycol + wind stop

35

1,0m

1,3m 1,3m

2,6m 2,6m

1,35m

1,0m2,7m

1,3m1,3m

1,3m

1,3m

5 m

1,35

m

1,0m

Minimum distance from obstacles

Distance of installation of several units

Free space

Few space, more capacity

36

50,0

60,0

70,0

80,0

90,0

100,0

110,0

WSA160 WSA220 WSA280 WSA250 WSA300-320 WSA360-380 WSA440 WSA480-640

0,0

10,0

20,0

30,0

40,0

0,0 25,0 50,0 75,0 100,0 125,0 150,0 175,0 200,0 225,0 250,0 275,0 300,0 325,0

WSA

160

WSA

220

WSA

250

WSA

280

WSA

300-

320

WSA360-3

80

WSA480-6

40

WSA440

90,0

100,0

110,0

120,0

130,0

140,0

150,0

160,0

170,0

180,0WSA160 WSA220 WSA250 WSA280 WSA300 WSA320 WSA360 WSA380 WSA440 WSA480 WSA640

20,0

30,0

40,0

50,0

60,0

70,0

80,0

0,0 25,0 50,0 75,0 100,0 125,0 150,0 175,0 200,0 225,0 250,0 275,0 300,0 325,0

WSA

160

WSA

220

WSA25

0

WSA

280

WSA300

WSA320

WSA360WSA380

WSA640

WSA480

WSA440

Pressure drop on the Evaporator

Pressure drop on the Evaporator + Free Cooling circuit

Pumps curves

High performance

Water Flow [m³/h]

Pres

sure

dro

p [k

Pa]

Water Flow [m³/h]

Pres

sure

dro

p [k

Pa]

37

200

225

250

275

300

325

350

375

50

75

100

125

150

175

50 75 100 125 150 175 200 225 250 275 300 325

WSA280

WSA250

WSA300

WSA320

WSA380

WSA360

WSA440WSA480

WSA640

275

300

325

350

375

400

425

450

475

100

125

150

175

200

225

250

50 75 100 125 150 175 200 225 250 275 300 325

WSA250

WSA280

WSA300WSA320

WSA360

WSA380

WSA440

WSA480

1 or 2 pumps (option): net residual head - Standar version

1 or 2 pumps (option): net residual head - HT version

PUMPS CURVES

Water Flow [m³/h]

Hea

d pr

essu

re [k

Pa]

Water Flow [m³/h]

Hea

d pr

essu

re [k

Pa]

38

150

175

200

225

250

275

300

325

350

0

25

50

75

100

125

150

50 75 100 125 150 175 200 225 250 275 300 325

WSA250-280

WSA300

WSA320

WSA360

WSA380

WSA440

WSA640

WSA480

225

250

275

300

325

350

375

400

425

450

475

500

25

50

75

100

125

150

175

200

225

50 75 100 125 150 175 200 225 250 275 300 325

WSA440W

SA250

WSA280

WSA300

WSA320

WSA380

WSA360

WSA480

1 or 2 pumps (option): net residual head - Free Cooling version

1 or 2 pumps (option): net residual head - Free Cooling HT version

PUMPS CURVES

Water Flow [m³/h]

Hea

d pr

essu

re [k

Pa]

Water Flow [m³/h]

Hea

d pr

essu

re [k

Pa]

39

Technical data

Wide range

WSA 160 WSA 220

Standard Low Noise Free Cooling Standard Low Noise Free Cooling

Cooling capacity kW 376 360 366 482 442 469

Cooling capacity in free cooling kW n.a. n.a. 376 n.a. n.a. 472

Total power consumpion kW 121 122 126 164 175 172

Sound power level dB(A) 96,9 89,0 96,9 98,5 90,5 98,5

Sound pressure level @ 10m dB(A) 68,9 61,0 68,9 70,5 62,5 70,5

Chilled water circuit

Flow of fluid to be cooled m³/h 64 62 64,4 83 76 82,7

Pressure drop on fluid to be cooled side kPa 44 32 44 35 33 34,75

Refrigerant Circuit

Refrigerant R134a R134a

Refrigerant charge (per circuit) kg 67 + 67 86 +86

No. of refrigerant circuits 2 2

Oil charge dm³ 22 + 22 22 + 22

Compressor

No. 2 x Semi-Hermetic Double Screw 2 x Semi-Hermetic Double Screw

Capacity control % 12,5 ... 100 12,5 ... 100

Power Consumption kW 105 105 110 148 148 156

Current consumption A 34,4 20 34,4 243 243 253,9

Maximum current consumption A 288 288 288 364 364 364

Fans

No. 8 x Ø 800 mm Axial 8 x Ø 800 mm Axial

Air flow with free outlet m³/h 148820 111280 122250 144240 99570 120127

Power consumption kW 17,6 17,6 17,6 17,6 17,6 17,6

Current consumption A 37,8 37,8 37,8 37,8 37,8 37,8

Unit data

Rated power supply V/-/Hz 400 / 3 / 50 400 / 3 / 50


Inrush current A 586 586 586 750 750 750

Height x Width x Depth mm 2473 x 2278 x 4240 2473 x 2278 x 4635

Weight for transport kg 4898 4898 5748 5043 5043 5973

Weight in operation kg 5092 5092 5768 5226 5226 6354

Efficiency index

EER 3,1 2,94 2,91 2,94 2,52 2,72

ESEER 4,43 4,59 4,33 4,65 4,64 4,39

IPLV 4,35 4,63 4,23 4,55 4,57 4,43

� Evaporator water (in/out) 12/7 °C; Condenser air (in) 35 °C � Average sound pressure level, at 10m distance, unit in a free field on a

reflective surface. � Unit at full capacity. According to ISO 3744. Pumps contribution is not

considered. � In case of appications with output fluid temperature below 0°C, please

contact the manufacturer � Weight of Standard Version @ 50Hz, without pump, without other options

40

TECHNICAL DATA

WSA 250 WSA 280



Cooling capacity in free cooling kW n.a. n.a. 552 n.a. n.a. 611






Pressure drop on fluid to be cooled side kPa 36 31 35,56 38 37 38,25

Refrigerant Circuit


Refrigerant charge (per circuit) kg 101 + 101 112 + 112


Oil charge dm³ 19 + 19 19 + 19

Compressor




Current consumption A 51,6 30 51,6 51,6 30 51,6


Fans





Unit data



Inrush current A 875 875 875 946 946 946




Efficiency index

EER 3,18 2,91 2,99 3,11 2,77 2,81

ESEER 4,52 4,65 4,5 4,58 4,66 4,39

IPLV 4,48 4,7 4,35 4,58 4,71 4,3





41

TECHNICAL DATA

WSA 300 WSA 320



Cooling capacity in free cooling kW -- -- 660 -- -- 740







Refrigerant Circuit




Oil charge dm³ 19 + 19 30 + 30

Compressor






Fans





Unit data



Inrush current A 946 946 946 802 802 802




Efficiency index

EER 2,97 2,61 2,76 3,12 2,81 2,92

ESEER 4,45 4,49 4,34 4,53 4,64 4,44

IPLV 4,45 4,52 4,29 4,37 4,57 4,28





42

TECHNICAL DATA

WSA 360 WSA 380








Flow of fluid to be cooled m³/h 145 134 145 156 146 156,4


Refrigerant Circuit




Oil charge dm³ 30 + 30 30 + 30

Compressor






Fans





Unit data



Inrush current A 861 861 861 861 861 861




Efficiency index

EER 3,12 2,75 2,91 3,1 2,77 2,91

ESEER 4,76 4,78 4,55 4,65 4,67 4,41

IPLV 4,6 4,68 4,46 4,56 4,65 4,42





43

TECHNICAL DATA

WSA 440 WSA 480










Refrigerant Circuit




Oil charge dm³ 30 + 30 30 + 30

Compressor




Current consumption A 68,8 40 68,8 103 60 103


Fans





Unit data



Inrush current A 992 992 992 1134 1134 1134




Efficiency index

EER 2,91 2,52 2,72 3,19 2,9 2,97

ESEER 4,66 4,59 4,3 4,64 4,72 4,49

IPLV 4,55 4,53 4,41 4,47 4,67 4,32





44

TECHNICAL DATA





WSA640

Standard Low Noise Free Cooling

Cooling capacity kW 1260 1167 1225

Cooling capacity in free cooling kW -- -- 1237

Total power consumpion kW 431 453 451

Sound power level dB(A) 102,0 94,1 102,0

Sound pressure level @ 10m dB(A) 74,0 66,1 74,0


Flow of fluid to be cooled m³/h 216 200 216,2

Pressure drop on fluid to be cooled side kPa 49 200 49,2

Refrigerant Circuit

Refrigerant R134a

Refrigerant charge (per circuit) kg 223 + 223

No. of refrigerant circuits 2

Oil charge dm³ 32 + 32

Compressor

No. 2 x Semi-Hermetic Double Screw

Capacity control % 12,5 ... 100

Power Consumption kW 383 383 403

Current consumption A 103 60 103

Maximum current consumption A 894 894 894

Fans

No. 24 x Ø 800 mm Axial

Air flow with free outlet m³/h 418070 280155 336812

Power consumption kW 52,8 52,8 52,8

Current consumption A 113,5 113,5 113,5

Unit data

Rated power supply V/-/Hz 400 / 3 / 50

Maximum current consumption A 1018 1018 1018

Inrush current A 1488 1488 1488

Height x Width x Depth mm 2473 x 2278 x 11920

Weight for transport kg 10100 10100 12346

Weight in operation kg 10551 10551 13328

Efficiency index

EER 2,92 2,57 2,72

ESEER 4,53 4,53 4,4

IPLV 4,48 4,52 4,32

45

STULZ S.p.A.via E. Torricelli, 337067 Valeggio s/Mincio (VR)Tel. +39 045 6331600Fax. +39 045 [email protected] - www.cosmotec.it

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Documents

WSA Techno - Cosmotec | Industrial cooling · 2-ways valves controlled by SEC.blue, to ensure the maximum yield, minimizing the compressor opera-tion time and reducing the running