databook - daikin.es

EWAD~D- R3.7.6 Databook 27/11/2015

CSS - Rev. 9.5 Printing date: Code:

Air cooled screw chillers

EWAD~D- D-SS (Standard Efficiency - Standard Noise) - Cooling Capacity from 389 to 578 kW D-SL (Standard Efficiency - Low Noise) - Cooling Capacity from 184 to 533 kW D-SR (Standard Efficiency - Reduced Noise) - Cooling Capacity from 177 to 533 kW D-SX (Standard Efficiency - Extra Low Noise) - Cooling Capacity from 203 to 492 kW D-XS (High Efficiency - Standard Noise) - Cooling Capacity from 247 to 622 kW D-XR (High Efficiency - Reduced Noise) - Cooling Capacity from 243 to 600 kW D-HS (High Ambient - Standard Noise) - Cooling Capacity from 195 to 587 kW

Performance according to EN14511.

www.eurovent-certification.com www.certiflash.com

FEATURES AND BENEFITS

Low operating cost and extended operating life This chiller range is the result of careful design, aimed to optimize the energy efficiency of the chillers, with the objective of bringing down operating costs and improving installation profitability, effectiveness and economical management. The chillers feature a high efficiency single screw compressor design, large condenser coil surface area for maximum heat transfer and low discharge pressure, advanced technology condenser fans and a ‘shell&tube’ evaporator with low refrigerant pressure drops.

Low operating sound levels Very low sound levels both at full load and part load conditions are achieved by the latest compressor design and by a unique new fan that moves large volume of air at exceptionally low sound levels and by the virtually vibration-free operation.

Outstanding reliability The chillers have two truly independent refrigerant circuits, in order to assure maximum safety for any maintenance, whether planned or not. They are equipped with a rugged compressor design with advanced composite compressor gaterotors material, a proactive control logic and are full factory-run-tested to optimized trouble-free operation.

Infinite capacity control Cooling capacity control is infinitely variable by means of a single screw asymmetric compressor controlled by microprocessor system. Each unit has infinitely variable capacity control from 100% down to 12.5%. This modulation allows the compressor capacity to exactly match the building cooling load without any leaving evaporator water temperature fluctuation. This chilled water temperature fluctuation is avoided with a stepless control.

With a compressor load step control in fact, the compressor capacity, at partial loads, will be too high or too low compared to the building cooling load. The result is an increase in chiller energy costs, particularly at the part-load conditions at which the chiller operates most of the time.

Units with stepless regulation offer benefits that the units with step regulation are unable to match. The ability to follow the system energy demand at any time and the possibility to provide steady outlet water temperature without deviations from the set-point, are the two points that allow you to understand how the optimum operating conditions of a system can be met through the use of a unit with stepless regulation.

Superior control logic The new MicroTech III controller provides an easy to use control environmental. The control logic is designed to provide maximum efficiency, to continue operation in unusual operating conditions and to provide a history of unit operation. One of the greatest benefits is the easy interface with LonWorks, Bacnet, Ethernet TCP/IP or Modbus communications.

Code requirements – Safety and observant of laws/directives Units are designed and manufactured in accordance with applicable selections of the following:

Construction of pressure vessel Machinery Directive Low Voltage Electromagnetic Compatibility Electrical & Safety codes Manufacturing Quality Stds

97/23/EC (PED) 2006/42/EC 2006/95/EC 2004/108/EC EN 60204–1 / EN 60335-2-40 UNI – EN ISO 9001:2004

Certifications Units are CE marked, complying with European directives in force, concerning manufacturing and safety. On request units can be produced complying with laws in force in non European countries (ASME, GOST, etc.), and with other applications, such as naval (RINA, etc.).

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FEATURES AND BENEFITS

Versions This range is available in three different versions: STANDARD EFFICIENCY 7 sizes to cover a range from 389 up to 578 kW with an EER up to 2.03 and an ESEER up to 3.56 (data refers to Standard sound configuration). HIGH EFFICIENCY 11 sizes to cover a range from 247 up to 622 kW with an EER up to 3.20 and an ESEER up to 4.01 (data refers to Standard sound configuration). HIGH AMBIENT TEMPERATURE 15 sizes to cover a range from 195 up to 587 kW with an EER up to 3.07 and an ESEER up to 3.79 (data refers to Standard sound configuration). The EER (Energy Efficiency Ratio) is the ratio of the Cooling Capacity to the Power Input of the unit. The Power Input includes: the power input for operation of the compressor, the power input of all control and safety devices, the power input for fans. The ESEER (European Seasonal Energy Efficiency Ratio) is a weighed formula enabling to take into account the variation of EER with the load rate and the variation of air inlet condenser temperature. ESEER = A x EER100% + B x EER75% + C x EER50% + D x EER25%

K = Coefficient; T = Air inlet condenser temperature.

Sound configurations Standard, low, reduced and extra low sound configurations available as follows: STANDARD SOUND Condenser fan rotating at 890 rpm, rubber antivibration under compressor LOW SOUND Condenser fan rotating at 900 rpm (condenser fan ø 710) and 705 rpm (condenser fan ø 800), rubber antivibration under compressor. REDUCED SOUND Condenser fan rotating at 680 rpm (condenser fan ø 710) and 705 rpm (condenser fan ø 800), rubber antivibration under compressor, compressor sound enclosure. EXTRA LOW SOUND Condenser fan rotating at 500 rpm, rubber antivibration under compressor, compressor and evaporator sound enclosure.

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GENERAL CHARACTERISTICS

Cabinet and structure The cabinet is made of galvanized steel sheet and painted to provide a high resistance to corrosion. Colour Ivory White (Munsell code 5Y7.5/1) (±RAL7044).The base frame has an eye-hook to lift the unit with ropes for an easy installation. The weight is uniformly distributed along the profiles of the base and this facilitates the arrangement of the unit.

Compressor (Symmetric Single Screw) The compressor is semi-hermetic, single-screw type with gate-rotors made of carbon impregnated engineered composite material. The compressor has one slide managed by the unit microprocessor for infinitely modulating the capacity between 100% to 25%. An integrated high efficiency oil separator maximizes the oil separation and standard start is Wye-Delta (Y-Δ) type.

Compressor (Asymmetric Single Screw) The compressor is semi-hermetic, single-screw type with gate-rotor made with the latest high-strength fibre reinforced star material. The compressor has an asymmetric slide regulation managed by the unit controller for infinitely modulating capacity from 100% to 25%. An integrated high efficiency oil separator maximizes the oil separation and standard start is Wye-Delta (Y-Δ) type.

Refrigerant The compressors have been designed to operate with R-134a, ecological refrigerant with zero ODP (Ozone Depletion Potential) and very low GWP (Global Warming Potential), resulting in low TEWI (Total Equivalent Warming Impact).

Evaporator (Plate Heat Exchanger) The unit is equipped with a direct expansion plate to plate type evaporator. This heat exchanger is made of stainless steel brazed plates and is covered with a 20mm closed cell insulation material. The exchanger is equipped with an electric heater for protection against freezing down to –28°C and evaporator water connections are provided with victaulic kit (as standard). The evaporator has 2 circuits (one for each compressor), 1 water circuit and is manufactured in accordance to PED approval. Flow switch on evaporator available as option (shipped loose). Water filter is not available.

Evaporator (Shell&Tube) The unit is equipped with a direct expansion shell&tube evaporator with refrigerant evaporating inside the tubes and water flowing outside. The tubes are enhanced for maximum heat transfer and rolled into steel tube sheet and sealed. The evaporators are single-pass on both the refrigerant and water sides for pure counter-flow heat exchange and low refrigerant pressure drops. Both attributes contribute to the heat exchanger effectiveness and total unit’s outstanding efficiency. The water side is designed for 10 bar of maximum operating pressure and is provided with vents and drain. The external shell is covered with a 10mm closed cell insulation material and the evaporator water connections are provided with victaulic kit (as standard). Each evaporator has 2 circuits, one for each compressor and is manufactured in accordance to 97/23/EC directive (PED). Water filter is not available.

Condenser The condenser is manufactured with internally enhanced seamless copper tubes arranged in a staggered row pattern and mechanically expanded into lanced and rippled aluminum condenser fins with full fin collars. An integral sub-cooler circuit provides sub-cooling to effectively eliminate liquid flashing and increase cooling capacity without increasing the power input.

Condenser fans (ø 710) The condenser fans are propeller type with wing-profile blades for achieving better performance. Each fan is protected by a guard. Fan motors are protected by circuit breakers (installed inside the electrical panel as a standard) and are IP54.

Condenser fans (ø 800) The condenser fans are propeller type with high efficiency design blades to maximize performances. The material of the blades is glass reinforced resin and each fan is protected by a guard. Fan motors are internally protected from overtemperature and are IP54.

Electronic expansion valve The unit is equipped with the most advanced electronic expansion valves to achieve precise control of refrigerant mass flow. As today’s system requires improved energy efficiency, tighter temperature control, wider range of operating conditions and incorporate features like remote monitoring and diagnostics, the application of electronic expansion valves becomes mandatory. Electronic expansion valves possess unique features: short opening and closing time, high resolution, positive shut-off function to eliminate use of additional solenoid valve, continuous modulation of mass flow without stress in the refrigerant circuit and corrosion resistance stainless steel body. Electronic expansion valves are typically working with lower ΔP between high and low pressure side, than a thermostatic expansion valve. The electronic expansion valve allows the system to work with low condenser pressure (winter time) without any refrigerant flow problems and with a perfect chilled water leaving temperature control.

Refrigerant circuit Each unit has 2 independent refrigerant circuits and each one includes: • Compressor with integrated oil separator • Refrigerant • Evaporator • Air Cooled Condenser • Electronic expansion valve • Discharge line shut off valve • Liquid line shut off valve • Sight glass with moisture indicator • Filter drier • Charging valves • High pressure switch • High pressure transducers • Low pressure transducers • Oil pressure transducer • Suction temperature sensor

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Electrical control panel Power and control are located in the main panel that is manufactured to ensure protection against all weather conditions. The electrical panel is IP54 and (when opening the doors) internally protected against possible accidental contact with live parts. The main panel is fitted with a main switch interlocked door that shuts off power supply when opening.

Power Section The power section includes compressors and fans protection devices, compressors and fans starters and control circuit power supply.

MicroTech III controller MicroTech III controller is installed as standard; it can be used to modify unit set-points and check control parameters. A built-in display shows chiller operating status plus temperatures and pressures of water, refrigerant and air, programmable values, set-points. A sophisticated software with predictive logic, selects the most energy efficient combination of compressors, EEXV and condenser fans to keep stable operating conditions to maximise chiller energy efficiency and reliability. MicroTech III is able to protect critical components based on external signals from its system (such as motor temperatures, refrigerant gas and oil pressures, correct phase sequence, pressure switches and evaporator). The input coming from the high pressure switch cuts all digital output from the controller in less than 50ms, this is an additional security for the equipment. Fast program cycle (200ms) for a precise monitoring of the system. Floating point calculations supported for increased accuracy in Pressure / Temperature conversions.

Control section - main features Control Section has the following feature. • Management of the compressor stepless capacity and fans modulation. • Chiller enabled to work in partial failure condition. • Full routine operation at condition of: - high ambient temperature value - high thermal load - high evaporator entering water temperature (start-up) • Display of evaporator entering/leaving water temperature. • Display of Outdoor Ambient Temperature. • Display of condensing-evaporating temperature and pressure, suction and discharge superheat for each circuit. • Leaving water evaporator temperature regulation (temperature tolerance = 0,1°C). • Compressor and evaporator pumps hours counter. • Display of Status Safety Devices. • Number of starts and compressor working hours. • Optimized management of compressor load. • Fan management according to condensing pressure. • Re-start in case of power failure (automatic / manual). • Soft Load (optimized management of the compressor load during the start-up). • Start at high evaporator water temperature. • Return Reset (Set Point Reset based on return water temperature). • OAT (Outside Ambient temperature) Reset. • Set point Reset (optional). • Application and system upgrade with commercial SD cards. • Ethernet port for remote or local servicing using standard web browsers. • Two different sets of default parameters could be stored for easy restore.

Safety device / logic for each refrigerant circuit The following devices / logics are available. • High pressure (pressure switch). • High pressure (transducer). • Low pressure (transducer). • Fans circuit breaker. • High compressor discharge temperature. • High motor winding temperature. • Phase Monitor. • Low pressure ratio. • High oil pressure drop. • Low oil pressure. • No pressure change at start.

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System security The following securities are available. • Phase monitor. • Low Ambient temperature lock-out. • Freeze protection.

Regulation type Proportional + integral + derivative regulation on the evaporator leaving water output probe.

MicroTech III MicroTech III built-in terminal has the following features. • 164x44 dots liquid crystal display with white back lighting. Supports Unicode fonts for multi-lingual. • Key-pad consisting of 3 keys. • Push’n’Roll control for an increased usability. • Memory to protect the data. • General faults alarm relays. • Password access to modify the setting. • Application security to prevent application tampering or hardware usability with third party applications. • Service report displaying all running hours and general conditions. • Alarm history memory to allow an easy fault analysis.

Supervising systems (on request)

MicroTech III remote communication MicroTech III is able to communicate to BMS (Building Management System) based on the most common protocols as: • ModbusRTU • LonWorks, now also based on the international 8040 Standard Chiller Profile and LonMark Technology. • BacNet BTP certifief over IP and MS/TP (class 4) (Native). • Ethernet TCP/IP.

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OPTIONS

Standard Options (supplied on basic unit) Wye-Delta compressor starter (Y-D) - For low inrush current and reduced starting torque

Double setpoint - Dual leaving water temperature setpoints.

Phase monitor - Device that monitors input voltage and stops the chiller in case of phase loss or wrong phase sequence.

Evaporator victaulic kit - Hydraulic joint with gasket for an easy and quick water connection.

Water pressure differential switch on evaporator

Evaporator electric heater - Electric heater (controlled by a thermostat) to protect the evaporator from freezing down to -28°C ambient temperature, providing the power supply is on.

Electronic expansion valve

Discharge line shut-off valve - Installed on the discharge port of the compressor to facilitate maintenance operation.

Suction line shut-off valve - Installed on the suction port of the compressor to facilitate maintenance operation.

Ambient outside temperature sensor and setpoint reset

Hour run meter

General fault contactor

Setpoint reset, Demand limit and Alarm from external device - Setpoint Reset: The leaving water temperature set-point can be overwritten with an external 4-20mA, through the ambient temperature, or through the evaporator water temperature ΔT. Demand Limit: Chiller capacity can be limited through an external 4-20mA signal or via network. Alarm from external device: The unit controller is able to receive an external alarm signal. The user can decide whether this alarm signal will stop the unit or not.

Fans circuit breakers - Safety devices that, added to the standard protection devices, protect fan motors against overload and overcurrent.

Main switch interlock door

Options (on request) MECHANICAL

Total heat recovery - Plate to plate heat exchangers for hot water production.

Total heat recovery (1 circuit) - Plate to plate heat exchangers for hot water production.

Partial heat recovery - Plate to plate heat exchangers for hot water production.

Brine version - Allows the unit to operate down to -15°C leaving liquid temperature (antifreeze required). Reccomended below +4°C

Evaporator flange kit

20mm evaporator insulation - The external shell is covered with a 20mm closed cell insulation material.

Axial fans (250 Pa lift)

Condenser coil guards

Cu-Cu condenser coil - To give better protection against corrosion by aggressive environments.

Cu-Cu-Sn condenser coil - To give better protection against corrosion in aggressive environments and by salty air.

Alucoat fins coil - Fins are protected by a special acrylic paint with a high resistance to corrosion.

High pressure side manometers

Low pressure side manometers

One centrifugal pump (low lift– 100 kPa available static pressure) - Hydronic kit consists of: single direct driven centrifugal pump, water filling system with pressure gauge, safety valve, drain valve. The motor pump is protected by a circuit breaker installed in control panel. The kit is assembled and wired to the control panel. The pipe and pump are protected from freezing with an additional electrical heater.

One centrifugal pump (high lift– 200 kPa available static pressure) Hydronic kit consists of: single direct driven centrifugal pump, water filling system with pressure gauge, safety valve, drain valve. The motor pump is protected by a circuit breaker installed in control panel. The kit is assembled and wired to the control panel. The pipe and pump are protected from freezing with an additional electrical heater.

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OPTIONS

Two centrifugal pump (low lift) - Hydronic kit consists of: twin direct driven centrifugal pumps, water filling system with pressure gauge, safety valve, drain valve. The motor pump is protected by a circuit breaker installed in control panel. The kit is assembled and wired to the control panel. The pipe and pumps are protected from freezing with an additional electrical heater.

Two centrifugal pump (high lift) Hydronic kit consists of: twin direct driven centrifugal pumps, water filling system with pressure gauge, safety valve, drain valve. The motor pump is protected by a circuit breaker installed in control panel. The kit is assembled and wired to the control panel. The pipe and pumps are protected from freezing with an additional electrical heater.

Double pressure relief valve with diverter

Evaporator right water connections

ELECTRICAL / CONTROL

Soft starter - Electronic starting device to reduce the mechanical stress during compressor start-up

Compressor thermal overload relays - Safety electronic devices that, added to the standard protection devices, protect compressor motors against overload and current unbalance.

Inverter compressor starter

Under / Over voltage control - Electronic device that monitors and displays input voltage, and stops the chiller in case of phase loss, wrong phase sequence, or voltage exceeding minimum and maximum allowed values.

Energy meter - Device installed inside the control box that displays all chiller electrical power parameters at line input such as line voltage and phase current, input active and reactive power, active and reactive energy. An integrated RS485 module allows a Modbus communication to an external BMS.

Capacitors for power factor correction - Devices that increase the power factor of the unit. The capacitors are “dry” self-regenerating type with over pressure disconnecting safety device insulated with a no toxic dielectric mix without PCB or PCT.

Current limit - To limit maximum absorbed current of the unit whenever is required

Speedtrol (fan speed control device - ON/OFF - up to -18°C) - Continuous fan speed regulation on the first fan (VFD driven) of each circuit. It allows unit operation down to -18ºC.

Evaporator flow switch - Supplied separately to be wired and installed on the evaporator water piping (by the customer).

Compressors circuit breakers Safety devices that include in a single device all safety functions otherwise provided by standard fuses and optional thermal relays, such as protection against overcurrent, overload, current unbalance.

Fans speed regulation (+ fan silent mode) - Continuous fan speed regulation of all fans (VFD driven) for improved sound level of the unit during low ambient temperature operation. At very low temperatures, all fans except the first are switched off thus allowing unit operation down to -18°C.

INSTALLATION

Rubber anti vibration mounts - Supplied separately, these are positioned under the base of the unit during installation. Ideal to reduce the vibrations when the unit is floor mounted.

Spring anti vibration mounts - Supplied separately, these are positioned under the base of the unit during installation. Ideal for dampening vibrations for installation on roofs and metallic structures.

External tank without cabinet (500 L)

External tank without cabinet (1000 L)

External tank with cabinet (500 L)

External tank with cabinet (1000 L)

OTHER

Container Kit

Witness test

Acoustic test

Transport kit

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NOMENCLATURE

E W A D 3 9 0 D - S S

= Air cooled chiller cool. only = Air cooled chiller heat pump = Air cooled condensing unit

EWA EWY ERA

Machine type

Refrigerant D P Q

= R-134a = R-407C = R-410A

Capacity class in kW (Cooling) Always 3-digit code

Model series A, B, …..

Inverter - = Non inverter

Efficiency level S X H

= Standard Efficiency = High Efficiency = High Temperature

Sound level

S L R X

= Standard sound = Low sound = Reduced sound = Extra low sound

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TECHNICAL SPECIFICATIONS

EWAD D-SS 440 470 510 530 560 580 390 MODEL

Capacity - Cooling (1) kW 575 553 529 500 435 388 463 Capacity control - Type --- Stepless Stepless Stepless Stepless Stepless Stepless Stepless Capacity control - Minimum capacity % 12,5 12,5 12,5 12,5 12,5 12,5 12,5 Unit power input - Cooling (1) kW 199 207 196 186 165 154 169 EER (1) --- 2,89 2,67 2,70 2,70 2,63 2,52 2,74 ESEER --- 3,29 3,45 3,41 3,41 3,43 3,26 3,44 IPLV --- 3,96 4,11 3,96 3,96 3,86 3,75 3,89

CASING Colour (2) --- IW IW IW IW IW IW IW Material (2) --- GPSS GPSS GPSS GPSS GPSS GPSS GPSS

DIMENSIONS Height mm 2223 2223 2223 2223 2223 2223 2223 Width mm 2234 2234 2234 2234 2234 2234 2234 Length mm 4040 4040 4040 4040 4040 3139 4040

WEIGHT Unit Weight kg 4235 4230 4230 4230 4030 2960 4220 Operating Weight kg 4395 4395 4395 4395 4195 3090 4395

WATER HEAT EXCHANGER Type (3) --- S&T S&T S&T S&T S&T S&T S&T Water Volume l 160 165 165 165 165 130 175 Nominal water flow rate - Cooling l/s 27,6 26,5 25,4 24,0 20,8 18,6 22,2 Nominal Water pressure drop - Cooling kPa 51 57 52 47 38 46 67 Insulation material (4) CC CC CC CC CC CC CC

AIR HEAT EXCHANGER Type (5) --- HFP HFP HFP HFP HFP HFP HFP

FAN Type (6) --- DPT DPT DPT DPT DPT DPT DPT Drive (7) --- DOL DOL DOL DOL DOL DOL DOL Diameter mm 800 800 800 800 800 800 800 Nominal air flow l/s 42306 43696 43696 43696 31729 32772 43696 Quantity No. 8 8 8 8 6 6 8 Speed rpm 890 890 890 890 890 890 890 Motor input kW 14,0 14,0 14,0 14,0 10,5 10,5 14,0

COMPRESSOR Type --- Asymm

Single Screw

Asymm Single Screw

Asymm Single Screw

Asymm Single Screw

Asymm Single Screw

Single Screw

Asymm Single Screw

Oil charge l 32 32 32 32 32 26 32 Quantity No. 2 2 2 2 2 2 2

SOUND LEVEL Sound Power - Cooling dB(A) 99 99 98 97 97 96 97 Sound Pressure - Cooling (8) dB(A) 79 79 79 77 77 77 77

REFRIGERANT CIRCUIT Refrigerant type --- R134a R134a R134a R134a R134a R134a R134a Refrigerant charge kg 94 86 80 76 66 56 72 N. of circuits No. 2 2 2 2 2 2 2

PIPING CONNECTIONS Evaporator water inlet/outlet 5.5 " 5.5 " 5.5 " 5.5 " 5.5 " 5.5 " 5.5 "

Fluid: Water (1) Cooling capacity, unit power input in cooling and EER are based on the following conditions: evaporator 12,0/7,0°C; ambient 35,0°C, unit at full load operation; (2) IW: Ivory White; GPSS: Galvanized and Painted Steel Sheet; (3) PHE: Plate Heat Exchanger --- S&T: Single Pass Shell & Tube (4) CC: Closed Cell; (5) HFP: High efficiency fin and tube type with integral subcooler (6) DPT: Direct Propeller Type; (7) DOL: Direct On Line - VFD: Inverter - BRS: Brushless (8) The values are according to ISO 9614 and Eurovent 8/1 for Eurovent certified units

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EWAD D-SL 200 230 250 260 280 320 300 180 MODEL

Capacity - Cooling (1) kW 320 297 274 260 244 197 183 224 Capacity control - Type --- Stepless Stepless Stepless Stepless Stepless Stepless Stepless Stepless Capacity control - Minimum capacity % 12,5 12,5 12,5 12,5 12,5 12,5 12,5 12,5 Unit power input - Cooling (1) kW 125 121 109 102 94,4 80,2 82,0 85,6 EER (1) --- 2,56 2,46 2,50 2,54 2,58 2,46 2,24 2,62 ESEER --- 3,14 3,10 3,13 3,16 3,11 3,03 2,91 3,21 IPLV --- 3,62 3,59 3,63 3,66 3,63 3,56 3,43 3,73

CASING Colour (2) --- IW IW IW IW IW IW IW IW Material (2) --- GPSS GPSS GPSS GPSS GPSS GPSS GPSS GPSS

DIMENSIONS Height mm 2355 2355 2355 2355 2355 2355 2355 2355 Width mm 2234 2234 2234 2234 2234 2234 2234 2234 Length mm 4040 3139 3139 3139 3139 2239 2239 3139

WEIGHT Unit Weight kg 3187 2860 2860 2860 2860 2470 2475 2860 Operating Weight kg 3300 2960 2960 2960 2960 2500 2500 2960

WATER HEAT EXCHANGER Type (3) --- S&T S&T S&T S&T S&T Phe Phe S&T Water Volume l 130 100 100 100 100 30 25 100 Nominal water flow rate - Cooling l/s 15,3 14,2 13,1 12,5 11,7 9,4 8,8 10,7 Nominal Water pressure drop - Cooling kPa 55 60 59 54 49 22 29 58 Insulation material (4) CC CC CC CC CC CC CC CC

AIR HEAT EXCHANGER Type (5) --- HFP HFP HFP HFP HFP HFP HFP HFP

FAN Type (6) --- DPT DPT DPT DPT DPT DPT DPT DPT Drive (7) --- DOL DOL DOL DOL DOL DOL DOL DOL Diameter mm 710 710 710 710 710 710 710 710 Nominal air flow l/s 30591 22302 22302 22623 22943 14868 15295 22943 Quantity No. 8 6 6 6 6 4 4 6 Speed rpm 900 900 900 900 900 900 900 900 Motor input kW 9,8 7,4 7,4 7,4 7,4 4,9 4,9 7,4

COMPRESSOR Type --- Single

Screw Single Screw

Single Screw

Single Screw

Single Screw

Single Screw

Single Screw

Single Screw

Oil charge l 26 26 26 26 26 26 26 26 Quantity No. 2 2 2 2 2 2 2 2

SOUND LEVEL Sound Power - Cooling dB(A) 95 94 94 94 94 94 94 94 Sound Pressure - Cooling (8) dB(A) 75 75 75 75 75 75 75 75

REFRIGERANT CIRCUIT Refrigerant type --- R134a R134a R134a R134a R134a R134a R134a R134a Refrigerant charge kg 58 58 58 56 52 42 36 46 N. of circuits No. 2 2 2 2 2 2 2 2

PIPING CONNECTIONS Evaporator water inlet/outlet 4 " 4 " 4 " 4 " 4 " 3 " 3 " 4 "


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EWAD D-SL 400 440 480 510 530 370 MODEL

Capacity - Cooling (1) kW 531 503 475 402 368 438 Capacity control - Type --- Stepless Stepless Stepless Stepless Stepless Stepless Capacity control - Minimum capacity % 12,5 12,5 12,5 12,5 12,5 12,5 Unit power input - Cooling (1) kW 197 205 188 171 135 172 EER (1) --- 2,70 2,46 2,53 2,36 2,72 2,55 ESEER --- 3,66 3,56 3,46 3,54 3,31 3,56 IPLV --- 4,14 4,07 3,96 3,85 3,84 4,06

CASING Colour (2) --- IW IW IW IW IW IW Material (2) --- GPSS GPSS GPSS GPSS GPSS GPSS

DIMENSIONS Height mm 2223 2223 2223 2223 2355 2223 Width mm 2234 2234 2234 2234 2234 2234 Length mm 4040 4040 4040 4040 4040 4040

WEIGHT Unit Weight kg 4235 4230 4230 4030 3187 4220 Operating Weight kg 4395 4395 4395 4195 3300 4395

WATER HEAT EXCHANGER Type (3) --- S&T S&T S&T S&T S&T S&T Water Volume l 160 165 170 165 130 170 Nominal water flow rate - Cooling l/s 25,4 24,1 22,8 19,3 17,7 21,0 Nominal Water pressure drop - Cooling kPa 43 48 54 48 67 62 Insulation material (4) CC CC CC CC CC CC

AIR HEAT EXCHANGER Type (5) --- HFP HFP HFP HFP HFP HFP

FAN Type (6) --- DPT DPT DPT DPT DPT DPT Drive (7) --- DOL DOL DOL DOL DOL DOL Diameter mm 800 800 800 800 710 800 Nominal air flow l/s 32576 33493 33493 24432 30591 33493 Quantity No. 8 8 8 6 8 8 Speed rpm 705 705 705 705 900 705 Motor input kW 6,3 6,3 6,3 4,7 9,8 6,3


Single Screw

Asymm Single Screw

Asymm Single Screw

Asymm Single Screw

Single Screw

Asymm Single Screw

Oil charge l 32 32 32 32 26 32 Quantity No. 2 2 2 2 2 2

SOUND LEVEL Sound Power - Cooling dB(A) 96 96 94 94 97 94 Sound Pressure - Cooling (8) dB(A) 77 76 75 75 78 75

REFRIGERANT CIRCUIT Refrigerant type --- R134a R134a R134a R134a R134a R134a Refrigerant charge kg 86 80 68 70 70 72 N. of circuits No. 2 2 2 2 2 2

PIPING CONNECTIONS Evaporator water inlet/outlet 5 " 5 " 5 " 5 " 4 " 5 "


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EWAD D-SR 190 220 240 250 270 310 280 180 MODEL

Capacity - Cooling (1) kW 310 277 263 251 237 190 177 218 Capacity control - Type --- Stepless Stepless Stepless Stepless Stepless Stepless Stepless Stepless Capacity control - Minimum capacity % 12,5 12,5 12,5 12,5 12,5 12,5 12,5 12,5 Unit power input - Cooling (1) kW 127 123 112 104 95,6 83,1 84,5 86,2 EER (1) --- 2,45 2,25 2,34 2,41 2,48 2,28 2,09 2,53 ESEER --- 3,15 3,04 3,07 3,13 3,11 2,91 2,80 3,24 IPLV --- 3,70 3,53 3,56 3,59 3,59 3,42 3,29 3,74








Screw Single Screw

Single Screw

Single Screw

Single Screw

Single Screw

Single Screw

Single Screw






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EWAD D-SR 400 440 480 510 530 370 MODEL

Capacity - Cooling (1) kW 531 503 475 402 364 438 Capacity control - Type --- Stepless Stepless Stepless Stepless Stepless Stepless Capacity control - Minimum capacity % 12,5 12,5 12,5 12,5 12,5 12,5 Unit power input - Cooling (1) kW 197 205 188 171 140 172 EER (1) --- 2,70 2,46 2,53 2,36 2,60 2,55 ESEER --- 3,66 3,56 3,46 3,54 3,32 3,56 IPLV --- 4,14 4,07 3,96 3,90 3,88 4,06

CASING Colour (2) --- IW IW IW IW IW IW Material (2) --- GPSS GPSS GPSS GPSS GPSS GPSS

DIMENSIONS Height mm 2223 2223 2223 2223 2355 2223 Width mm 2234 2234 2234 2234 2234 2234 Length mm 4040 4040 4040 4040 4040 4040

WEIGHT Unit Weight kg 4240 4240 4240 4040 3335 4240 Operating Weight kg 4542 4542 4542 4342 3450 4542

WATER HEAT EXCHANGER Type (3) --- S&T S&T S&T S&T S&T S&T Water Volume l 160 165 170 165 130 170 Nominal water flow rate - Cooling l/s 25,4 24,1 22,8 19,3 17,4 21,0 Nominal Water pressure drop - Cooling kPa 43 48 54 48 65 62 Insulation material (4) CC CC CC CC CC CC

AIR HEAT EXCHANGER Type (5) --- HFP HFP HFP HFP HFP HFP

FAN Type (6) --- DPT DPT DPT DPT DPT DPT Drive (7) --- DOL DOL DOL DOL DOL DOL Diameter mm 800 800 800 800 710 800 Nominal air flow l/s 32576 33493 33493 24432 24777 33493 Quantity No. 8 8 8 6 8 8 Speed rpm 705 705 705 705 680 705 Motor input kW 6,3 6,3 6,3 4,7 7,0 6,3


Single Screw

Asymm Single Screw

Asymm Single Screw

Asymm Single Screw

Single Screw

Asymm Single Screw

Oil charge l 32 32 32 32 26 32 Quantity No. 2 2 2 2 2 2

SOUND LEVEL Sound Power - Cooling dB(A) 93 92 91 91 92 91 Sound Pressure - Cooling (8) dB(A) 73 73 71 71 73 71

REFRIGERANT CIRCUIT Refrigerant type --- R134a R134a R134a R134a R134a R134a Refrigerant charge kg 86 80 78 70 66 80 N. of circuits No. 2 2 2 2 2 2

PIPING CONNECTIONS Evaporator water inlet/outlet 5 " 5 " 5 " 5 " 5 " 5 "


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EWAD D-SX 230 250 270 290 300 370 310 210 MODEL

Capacity - Cooling (1) kW 369 308 298 285 270 230 202 252 Capacity control - Type --- Stepless Stepless Stepless Stepless Stepless Stepless Stepless Stepless Capacity control - Minimum capacity % 12,5 12,5 12,5 12,5 12,5 12,5 12,5 12,5 Unit power input - Cooling (1) kW 150 137 127 115 105 86,0 80,8 94,4 EER (1) --- 2,46 2,25 2,35 2,47 2,56 2,68 2,50 2,67 ESEER --- 3,14 3,15 3,29 3,34 3,44 3,52 3,29 3,41 IPLV --- 4,03 3,69 3,84 3,92 4,01 4,08 3,82 3,99




WATER HEAT EXCHANGER Type (3) --- S&T S&T S&T S&T S&T S&T S&T S&T Water Volume l 175 160 160 160 165 115 90 115 Nominal water flow rate - Cooling l/s 17,7 14,7 14,3 13,7 12,9 11,0 9,7 12,1 Nominal Water pressure drop - Cooling kPa 45 41 38 35 38 34 45 38 Insulation material (4) CC CC CC CC CC CC CC CC




Screw Single Screw

Single Screw

Single Screw

Single Screw

Single Screw

Single Screw

Single Screw






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EWAD D-SX 450 490 410 MODEL

Capacity - Cooling (1) kW 449 412 490 Capacity control - Type --- Stepless Stepless Stepless Capacity control - Minimum capacity % 12,5 12,5 12,5 Unit power input - Cooling (1) kW 175 171 189 EER (1) --- 2,56 2,41 2,60 ESEER --- 3,50 3,39 3,47 IPLV --- 3,98 3,90 3,90

CASING Colour (2) --- IW IW IW Material (2) --- GPSS GPSS GPSS

DIMENSIONS Height mm 2420 2420 2420 Width mm 2234 2234 2234 Length mm 4940 4040 4940

WEIGHT Unit Weight kg 4506 4302 4581 Operating Weight kg 4676 4472 4746

WATER HEAT EXCHANGER Type (3) --- S&T S&T S&T Water Volume l 170 170 165 Nominal water flow rate - Cooling l/s 21,5 19,7 23,5 Nominal Water pressure drop - Cooling kPa 50 44 45 Insulation material (4) CC CC CC

AIR HEAT EXCHANGER Type (5) --- HFP HFP HFP

FAN Type (6) --- DPT DPT DPT Drive (7) --- DOL DOL DOL Diameter mm 800 800 800 Nominal air flow l/s 28982 26496 33120 Quantity No. 9 8 10 Speed rpm 500 500 500 Motor input kW 5,4 4,8 6,0


Single Screw

Asymm Single Screw

Asymm Single Screw

Oil charge l 32 32 32 Quantity No. 2 2 2

SOUND LEVEL Sound Power - Cooling dB(A) 86 85 86 Sound Pressure - Cooling (8) dB(A) 66 65 66

REFRIGERANT CIRCUIT Refrigerant type --- R134a R134a R134a Refrigerant charge kg 76 70 80 N. of circuits No. 2 2 2

PIPING CONNECTIONS Evaporator water inlet/outlet 5 " 5 " 5 "


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EWAD D-XS 280 300 330 350 380 470 400 250 MODEL









Screw Single Screw

Single Screw

Single Screw

Single Screw

Single Screw

Single Screw

Single Screw






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EWAD D-XS 580 620 520 MODEL









Single Screw

Asymm Single Screw

Asymm Single Screw






of 78


EWAD D-XR 270 300 320 350 370 460 390 240 MODEL









Screw Single Screw

Single Screw

Single Screw

Single Screw

Single Screw

Single Screw

Single Screw






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EWAD D-XR 560 600 510 MODEL









Single Screw

Asymm Single Screw

Asymm Single Screw






of 78


EWAD D-HS 210 230 260 270 290 340 310 200 MODEL

Capacity - Cooling (1) kW 334 305 288 272 255 208 194 233 Capacity control - Type --- Stepless Stepless Stepless Stepless Stepless Stepless Stepless Stepless Capacity control - Minimum capacity % 12,5 12,5 12,5 12,5 12,5 12,5 12,5 12,5 Unit power input - Cooling (1) kW 122 114 105 98,9 92,1 76,0 77,9 83,9 EER (1) --- 2,75 2,68 2,73 2,75 2,77 2,73 2,49 2,77 ESEER --- 3,15 3,17 3,18 3,20 3,11 3,16 3,02 3,24 IPLV --- 3,64 3,72 3,73 3,74 3,66 3,74 3,56 3,77








Screw Single Screw

Single Screw

Single Screw

Single Screw

Single Screw

Single Screw

Single Screw






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EWAD D-HS 420 450 480 510 550 590 380 MODEL

Capacity - Cooling (1) kW 585 545 512 476 413 379 446 Capacity control - Type --- Stepless Stepless Stepless Stepless Stepless Stepless Stepless Capacity control - Minimum capacity % 12,5 12,5 12,5 12,5 12,5 12,5 12,5 Unit power input - Cooling (1) kW 194 185 177 164 143 129 152 EER (1) --- 3,02 2,95 2,89 2,90 2,90 2,93 2,93 ESEER --- 3,68 3,60 3,55 3,57 3,50 3,46 3,57 IPLV --- 4,50 4,18 4,10 3,99 4,00 3,99 4,05

CASING Colour (2) --- IW IW IW IW IW IW IW Material (2) --- GPSS GPSS GPSS GPSS GPSS GPSS GPSS

DIMENSIONS Height mm 2223 2223 2223 2223 2223 2223 2223 Width mm 2234 2234 2234 2234 2234 2234 2234 Length mm 4940 4940 4940 4940 4040 4040 4040

WEIGHT Unit Weight kg 4366 4361 4361 4356 3277 3185 3942 Operating Weight kg 4526 4526 4526 4526 3447 3300 4112

WATER HEAT EXCHANGER Type (3) --- S&T S&T S&T S&T S&T S&T S&T Water Volume l 160 165 165 170 170 115 170 Nominal water flow rate - Cooling l/s 28,0 26,1 24,5 22,8 19,8 18,2 21,4 Nominal Water pressure drop - Cooling kPa 53 56 51 58 46 70 53 Insulation material (4) CC CC CC CC CC CC CC

AIR HEAT EXCHANGER Type (5) --- HFP HFP HFP HFP HFP HFP HFP

FAN Type (6) --- DPT DPT DPT DPT DPT DPT DPT Drive (7) --- DOL DOL DOL DOL DOL DOL DOL Diameter mm 800 800 800 800 800 800 800 Nominal air flow l/s 54620 54620 54620 54620 43696 43696 42306 Quantity No. 10 10 10 10 8 8 8 Speed rpm 890 890 890 890 890 890 890 Motor input kW 17,5 17,5 17,5 17,5 14,0 14,0 14,0


Single Screw

Asymm Single Screw

Asymm Single Screw

Asymm Single Screw

Single Screw

Single Screw

Asymm Single Screw

Oil charge l 32 32 32 32 32 26 32 Quantity No. 2 2 2 2 2 2 2

SOUND LEVEL Sound Power - Cooling dB(A) 100 99 98 98 97 99 98 Sound Pressure - Cooling (8) dB(A) 80 79 78 78 77 79 78

REFRIGERANT CIRCUIT Refrigerant type --- R134a R134a R134a R134a R134a R134a R134a Refrigerant charge kg 94 92 92 95 60 68 90 N. of circuits No. 2 2 2 2 2 2 2

PIPING CONNECTIONS Evaporator water inlet/outlet 5 " 5 " 5 " 5 " 5 " 4 " 5 "


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ELECTRICAL SPECIFICATIONS

EWAD D-SS 440 470 510 530 560 580 390 MODEL

POWER SUPPLY Phases Nr 3 3 3 3 3 3 3 Frequency Hz 50 50 50 50 50 50 50 Voltage V 400 400 400 400 400 400 400 Voltage tolerance Minimum % -10% -10% -10% -10% -10% -10% -10% Voltage tolerance Maximum % +10% +10% +10% +10% +10% +10% +10%

UNIT Maximum starting current A 419 464 485 485 494 494 494 Nominal running current cooling A 254 274 281 306 321 336 324 Maximum running current A 312 330 359 380 391 402 402 Maximum current for wires sizing A 341 361 391 414 426 439 439

FANS Nominal running current cooling A 24 24 32 32 32 32 32

COMPRESSORS Phases Nr 3 3 3 3 3 3 3 Voltage V 400 400 400 400 400 400 400 Voltage tolerance Minimum % -10% -10% -10% -10% -10% -10% -10% Voltage tolerance Maximum % +10% +10% +10% +10% +10% +10% +10% Maximum running current A 141

148 153 153

153 174

174 174

174 185

185 185

185 185

Starting method --- Y-Δ Y-Δ Y-Δ Y-Δ Y-Δ Y-Δ Y-Δ

Fluid: Water Allowed voltage tolerance ± 10%. Voltage unbalance between phases must be within ± 3%. Maximum starting current: starting current of biggest compressor + current of the compressor at 75% maximum load + fans current for the circuit at 75%. Nominal current in cooling mode is referred to the following conditions: evaporator 12/7°C; ambient 35°C; compressors + fans current. Maximum running current is based on max compressor absorbed current in its envelope and max fans absorbed current Maximum unit current for wires sizing is based on minimum allowed voltage Maximum current for wires sizing: (compressors full load ampere + fans current) x 1,1.

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EWAD D-SL 200 230 250 260 280 320 300 180 MODEL

POWER SUPPLY Phases Nr 3 3 3 3 3 3 3 3 Frequency Hz 50 50 50 50 50 50 50 50 Voltage V 400 400 400 400 400 400 400 400 Voltage tolerance Minimum % -10% -10% -10% -10% -10% -10% -10% -10% Voltage tolerance Maximum % +10% +10% +10% +10% +10% +10% +10% +10%

UNIT Maximum starting current A 218 218 234 234 277 286 298 300 Nominal running current cooling A 135 133 141 155 166 176 192 200 Maximum running current A 165 165 186 202 213 224 238 258 Maximum current for wires sizing A 181 181 203 221 233 245 261 281

FANS Nominal running current cooling A 9 9 13 13 13 13 13 18

COMPRESSORS Phases Nr 3 3 3 3 3 3 3 3 Voltage V 400 400 400 400 400 400 400 400 Voltage tolerance Minimum % -10% -10% -10% -10% -10% -10% -10% -10% Voltage tolerance Maximum % +10% +10% +10% +10% +10% +10% +10% +10% Maximum running current A 78

78 78 78

78 95

95 95

95 105

105 105

105 120

120 120

Starting method --- Y-Δ Y-Δ Y-Δ Y-Δ Y-Δ Y-Δ Y-Δ Y-Δ

EWAD D-SL 400 440 480 510 530 370 MODEL

POWER SUPPLY Phases Nr 3 3 3 3 3 3 Frequency Hz 50 50 50 50 50 50 Voltage V 400 400 400 400 400 400 Voltage tolerance Minimum % -10% -10% -10% -10% -10% -10% Voltage tolerance Maximum % +10% +10% +10% +10% +10% +10%

UNIT Maximum starting current A 305 460 480 480 488 488 Nominal running current cooling A 214 281 285 308 334 323 Maximum running current A 269 322 348 368 379 379 Maximum current for wires sizing A 295 352 380 403 415 415

FANS Nominal running current cooling A 18 16 21 21 21 21

COMPRESSORS Phases Nr 3 3 3 3 3 3 Voltage V 400 400 400 400 400 400 Voltage tolerance Minimum % -10% -10% -10% -10% -10% -10% Voltage tolerance Maximum % +10% +10% +10% +10% +10% +10% Maximum running current A 126

126 153 153

153 174

174 174

174 185

174 185

Starting method --- Y-Δ Y-Δ Y-Δ Y-Δ Y-Δ Y-Δ


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EWAD D-SR 190 220 240 250 270 310 280 180 MODEL





78 78 78

78 95

95 95

95 105

105 105

105 120

120 120


EWAD D-SR 400 440 480 510 530 370 MODEL

POWER SUPPLY Phases Nr 3 3 3 3 3 3 Frequency Hz 50 50 50 50 50 50 Voltage V 400 400 400 400 400 400 Voltage tolerance Minimum % -10% -10% -10% -10% -10% -10% Voltage tolerance Maximum % +10% +10% +10% +10% +10% +10%

UNIT Maximum starting current A 302 460 480 480 488 488 Nominal running current cooling A 219 281 285 308 334 323 Maximum running current A 263 322 348 368 379 379 Maximum current for wires sizing A 289 352 380 403 415 415

FANS Nominal running current cooling A 12 16 21 21 21 21

COMPRESSORS Phases Nr 3 3 3 3 3 3 Voltage V 400 400 400 400 400 400 Voltage tolerance Minimum % -10% -10% -10% -10% -10% -10% Voltage tolerance Maximum % +10% +10% +10% +10% +10% +10% Maximum running current A 126

126 153 153

153 174

174 174

174 185

174 185

Starting method --- Y-Δ Y-Δ Y-Δ Y-Δ Y-Δ Y-Δ


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EWAD D-SX 230 250 270 290 300 370 310 210 MODEL





78 78 95

95 95

95 105

105 105

105 120

120 120

141 141


EWAD D-SX 450 490 410 MODEL

POWER SUPPLY Phases Nr 3 3 3 Frequency Hz 50 50 50 Voltage V 400 400 400 Voltage tolerance Minimum % -10% -10% -10% Voltage tolerance Maximum % +10% +10% +10%

UNIT Maximum starting current A 457 475 475 Nominal running current cooling A 272 280 298 Maximum running current A 316 338 360 Maximum current for wires sizing A 347 371 395

FANS Nominal running current cooling A 10 11 13

COMPRESSORS Phases Nr 3 3 3 Voltage V 400 400 400 Voltage tolerance Minimum % -10% -10% -10% Voltage tolerance Maximum % +10% +10% +10% Maximum running current A 153

153 153 174

174 174

Starting method --- Y-Δ Y-Δ Y-Δ


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EWAD D-XS 280 300 330 350 380 470 400 250 MODEL





82 82 99

99 99

99 110

110 110

110 126

126 126

148 148


EWAD D-XS 580 620 520 MODEL





162 185 162

185 185



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EWAD D-XR 270 300 320 350 370 460 390 240 MODEL





82 82 99

99 99

99 110

110 110

110 126

126 126

148 148


EWAD D-XR 560 600 510 MODEL





162 185 162

185 185



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EWAD D-HS 210 230 260 270 290 340 310 200 MODEL





78 78 78

78 95

95 95

95 105

105 105

105 120

120 120


EWAD D-HS 420 450 480 510 550 590 380 MODEL

POWER SUPPLY Phases Nr 3 3 3 3 3 3 3 Frequency Hz 50 50 50 50 50 50 50 Voltage V 400 400 400 400 400 400 400 Voltage tolerance Minimum % -10% -10% -10% -10% -10% -10% -10% Voltage tolerance Maximum % +10% +10% +10% +10% +10% +10% +10%

UNIT Maximum starting current A 312 423 468 489 489 498 498 Nominal running current cooling A 214 239 258 275 295 306 320 Maximum running current A 283 320 338 367 388 399 410 Maximum current for wires sizing A 309 349 369 399 422 434 447

FANS Nominal running current cooling A 32 32 32 40 40 40 40

COMPRESSORS Phases Nr 3 3 3 3 3 3 3 Voltage V 400 400 400 400 400 400 400 Voltage tolerance Minimum % -10% -10% -10% -10% -10% -10% -10% Voltage tolerance Maximum % +10% +10% +10% +10% +10% +10% +10% Maximum running current A 126

126 141 148

153 153

153 174

174 174

174 185

185 185

Starting method --- Y-Δ Y-Δ Y-Δ Y-Δ Y-Δ Y-Δ Y-Δ


of 78

SOUND LEVELS

EWAD D-XS Sound pressure level at 1 m from the unit (rif. 2 x 10-5 Pa) Power

63 Hz 125 Hz 250 Hz 500 Hz 1000 Hz 2000 Hz 4000 Hz 8000 Hz dB(A) dB(A) MODEL

250 74,9 79,2 65,9 57,3 51,4 77,5 72,9 96,8 79,5 68,7 280 74,9 79,2 65,9 57,3 51,4 77,5 72,9 97,2 79,5 68,7 300 74,9 79,2 65,9 57,3 51,4 77,5 72,9 97,2 79,5 68,7 330 74,9 79,2 65,9 57,3 51,4 77,5 72,9 97,2 79,5 68,7 350 74,9 79,2 65,9 57,3 51,4 77,5 72,9 97,2 79,5 68,7 380 76,4 80,7 67,4 58,8 52,9 79,0 74,4 98,7 81,0 70,2 400 76,4 80,7 67,4 58,8 52,9 79,0 74,4 98,7 81,0 70,2 470 73,5 78,5 73,0 60,0 53,0 79,0 73,0 98,7 64,5 71,5 520 73,5 78,5 73,0 60,0 53,0 79,0 73,5 99,2 64,5 71,5 580 73,5 78,5 73,1 60,0 53,0 79,0 73,5 99,2 64,5 71,6 620 73,5 78,5 73,0 60,0 53,0 79,0 73,5 99,2 64,5 71,5

EWAD D-XR Sound pressure level at 1 m from the unit (rif. 2 x 10-5 Pa) Power


240 72,4 73,4 61,2 54,2 47,4 72,5 69,2 91,8 78,9 65,6 270 72,4 73,4 61,2 54,2 47,4 72,5 69,2 92,2 78,9 65,6 300 72,4 73,4 61,2 54,2 47,4 72,5 69,2 92,2 78,9 65,6 320 72,4 73,4 61,2 54,2 47,4 72,5 69,2 92,2 78,9 65,6 350 72,4 73,4 61,2 54,2 47,4 72,5 69,2 92,2 78,9 65,6 370 73,4 74,4 62,2 55,2 48,4 73,5 70,2 93,2 79,1 66,6 390 73,4 74,4 62,2 55,2 48,4 73,5 70,2 93,2 79,1 66,6 460 68,0 73,0 67,5 54,5 47,5 73,5 67,5 93,2 59,0 66,0 510 68,0 73,0 67,5 54,5 47,5 73,5 68,0 93,7 59,0 66,0 560 68,0 73,0 67,6 54,5 47,5 73,5 68,0 93,7 59,0 66,1 600 68,0 73,0 67,5 54,5 47,5 73,5 68,0 93,7 59,0 66,0

EWAD D-HS Sound pressure level at 1 m from the unit (rif. 2 x 10-5 Pa) Power


200 74,3 78,8 65,2 56,5 50,8 77,0 72,4 95,7 79,0 67,8 210 74,3 78,8 65,2 56,5 50,8 77,0 72,4 95,7 79,0 67,8 230 74,3 78,8 65,2 56,5 50,8 77,0 72,4 96,3 79,0 67,8 260 74,3 78,8 65,2 56,5 50,8 77,0 72,4 96,3 79,0 67,8 270 74,3 78,8 65,2 56,5 50,8 77,0 72,4 96,3 79,0 67,8 290 74,3 78,8 65,2 56,5 50,8 77,0 72,4 96,3 79,0 67,8 310 74,3 78,8 65,2 56,5 50,8 77,0 72,4 96,3 79,0 67,8 340 74,3 78,8 65,2 56,5 50,8 77,0 72,4 96,7 79,0 67,8 380 76,4 80,7 67,4 58,8 52,9 79,0 74,4 98,7 81,0 70,2 420 72,0 77,0 71,0 58,5 50,4 77,0 70,5 96,7 63,0 68,5 450 72,0 77,0 71,5 58,5 51,5 77,5 71,5 97,7 63,0 70,0 480 72,0 77,0 71,5 58,5 51,5 77,5 71,5 97,7 63,0 70,0 510 72,0 77,0 71,5 58,5 51,5 77,5 71,5 97,7 63,0 70,0 550 73,5 78,5 73,0 60,0 53,0 79,0 73,5 99,2 64,5 71,5 590 74,0 79,0 73,6 60,5 53,5 79,5 74,0 99,7 65,0 72,1

EWAD D-SL Sound pressure level at 1 m from the unit (rif. 2 x 10-5 Pa) Power


180 72,3 76,8 63,2 54,5 48,8 75,0 70,4 93,7 77,0 65,8 200 72,3 76,8 63,2 54,5 48,8 75,0 70,4 93,7 77,0 65,8 230 72,3 76,8 63,2 54,5 48,8 75,0 70,4 94,3 77,0 65,8

of 78

SOUND LEVELS

EWAD D-SL Sound pressure level at 1 m from the unit (rif. 2 x 10-5 Pa) Power


250 72,3 76,8 63,2 54,5 48,8 75,0 70,4 94,3 77,0 65,8 260 72,3 76,8 63,2 54,5 48,8 75,0 70,4 94,3 77,0 65,8 280 72,3 76,8 63,2 54,5 48,8 75,0 70,4 94,3 77,0 65,8 300 72,3 76,8 63,2 54,5 48,8 75,0 70,4 94,3 77,0 65,8 320 72,3 76,8 63,2 54,5 48,8 75,0 70,4 94,7 77,0 65,8 370 74,9 79,2 65,9 57,3 51,4 77,5 72,9 97,2 79,5 68,7 400 69,0 74,0 68,5 55,5 48,5 74,5 68,5 94,2 60,0 67,0 440 69,0 74,0 68,5 55,5 48,5 74,5 68,5 94,2 60,0 67,0 480 69,0 74,0 68,5 55,5 48,5 74,5 68,5 94,2 60,0 67,0 510 70,5 75,5 70,0 57,0 50,0 76,0 70,5 95,7 61,5 68,5 530 71,0 76,0 70,5 57,5 50,5 76,5 71,0 96,2 62,0 69,0

EWAD D-SS Sound pressure level at 1 m from the unit (rif. 2 x 10-5 Pa) Power


390 71,5 76,5 70,5 58,0 49,9 76,5 70,0 95,8 62,5 68,0 440 71,5 76,5 71,0 58,0 51,0 77,0 71,0 96,7 62,5 69,5 470 71,5 76,5 71,0 58,0 51,0 77,0 71,0 96,7 62,5 69,5 510 71,5 76,5 71,0 58,0 51,0 77,0 71,0 96,7 62,5 69,5 530 73,0 78,0 72,5 59,5 52,5 78,5 73,0 98,2 64,0 71,0 560 73,5 78,5 73,0 60,0 53,0 79,0 73,5 98,7 64,5 71,5 580 73,5 78,5 73,0 60,0 53,0 79,0 73,5 98,7 64,5 71,5

EWAD D-SR Sound pressure level at 1 m from the unit (rif. 2 x 10-5 Pa) Power


180 69,4 70,8 58,2 50,4 57,1 70,0 66,3 88,7 76,4 62,6 190 69,4 70,8 58,2 50,4 57,1 70,0 66,3 88,7 76,4 62,6 220 69,4 70,8 58,2 50,4 57,1 70,0 66,3 89,3 76,4 62,6 240 69,4 70,8 58,2 50,4 57,1 70,0 66,3 89,3 76,4 62,6 250 69,4 70,8 58,2 50,4 57,1 70,0 66,3 89,3 76,4 62,6 270 69,4 70,8 58,2 50,4 57,1 70,0 66,3 89,3 76,4 62,6 280 69,4 70,8 58,2 50,4 57,1 70,0 66,3 89,3 76,4 62,6 310 69,4 70,8 58,2 50,4 57,1 70,0 66,3 89,7 76,4 62,6 370 72,4 73,4 61,2 54,2 47,4 72,5 69,2 92,2 78,9 65,6 400 69,5 71,0 61,0 53,5 43,5 71,0 69,0 90,7 56,5 65,0 440 69,5 71,0 61,0 53,5 43,5 71,0 69,0 90,7 56,5 65,0 480 69,5 71,0 61,0 53,5 43,5 71,0 69,0 90,7 56,5 65,0 510 71,0 72,5 62,5 55,0 45,0 72,5 70,5 92,2 58,0 66,5 530 71,5 73,0 63,0 55,5 45,5 73,0 71,0 92,7 58,5 67,0

of 78

SOUND LEVELS

EWAD D-SX Sound pressure level at 1 m from the unit (rif. 2 x 10-5 Pa) Power


210 60,1 65,1 55,4 42,3 35,8 65,0 65,1 84,3 68,5 57,9 230 60,1 65,1 55,4 42,3 35,8 65,0 65,1 84,7 68,5 57,9 250 60,1 65,1 55,4 42,3 35,8 65,0 65,1 84,7 68,5 57,9 270 60,1 65,1 55,4 42,3 35,8 65,0 65,1 84,7 68,5 57,9 290 60,1 65,1 55,4 42,3 35,8 65,0 65,1 84,7 68,5 57,9 300 60,1 65,1 55,4 42,3 35,8 65,0 65,1 84,7 68,5 57,9 310 60,1 65,1 55,4 42,3 35,8 65,0 65,1 84,7 68,5 57,9 370 60,0 63,0 58,0 47,0 36,5 65,0 63,5 84,7 62,0 60,0 410 60,0 63,0 58,0 47,0 36,5 65,0 63,5 84,7 62,0 60,0 450 59,5 62,5 59,5 46,5 37,0 65,5 63,5 85,7 63,5 60,5 490 59,0 65,0 59,0 50,5 39,5 66,0 64,0 86,2 62,0 59,5

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SOUND LEVEL AT DISTANCE

EWAD D-XS

SOUND PRESSURE LEVEL FOR DIFFERENT DISTANCES (dB(A))

50 m 25 m 20 m 15 m 10 m 5 m 1 m MODEL

250 61,5 57,5 64,6 59,3 69,5 77,5 51,7 280 61,9 57,9 65,0 59,7 69,8 77,5 52,2 300 61,9 57,9 65,0 59,7 69,8 77,5 52,2 330 61,9 57,9 65,0 59,7 69,8 77,5 52,2 350 61,9 57,9 65,0 59,7 69,8 77,5 52,2 380 63,4 59,4 66,5 61,2 71,3 79,0 53,7 400 63,4 59,4 66,5 61,2 71,3 79,0 53,7 470 63,3 59,3 66,4 61,1 71,2 79,0 53,6 520 63,7 59,7 66,7 61,4 71,5 79,0 54,0 580 63,7 59,7 66,7 61,4 71,5 79,0 54,0 620 63,7 59,7 66,7 61,4 71,5 79,0 54,0

EWAD D-XR


50 m 25 m 20 m 15 m 10 m 5 m 1 m MODEL

240 56,5 52,5 59,6 54,3 64,5 72,5 46,7 270 56,9 52,9 60,0 54,7 64,8 72,5 47,2 300 56,9 52,9 60,0 54,7 64,8 72,5 47,2 320 56,9 52,9 60,0 54,7 64,8 72,5 47,2 350 56,9 52,9 60,0 54,7 64,8 72,5 47,2 370 57,9 53,9 61,0 55,7 65,8 73,5 48,2 390 57,9 53,9 61,0 55,7 65,8 73,5 48,2 460 57,8 53,8 60,9 55,6 65,7 73,5 48,1 510 58,2 54,2 61,2 55,9 66,0 73,5 48,5 560 58,2 54,2 61,2 55,9 66,0 73,5 48,5 600 58,2 54,2 61,2 55,9 66,0 73,5 48,5

EWAD D-HS


50 m 25 m 20 m 15 m 10 m 5 m 1 m MODEL

200 60,5 56,4 63,6 58,2 68,6 77,0 50,6 210 60,5 56,4 63,6 58,2 68,6 77,0 50,6 230 61,0 56,9 64,1 58,8 69,0 77,0 51,2 260 61,0 56,9 64,1 58,8 69,0 77,0 51,2 270 61,0 56,9 64,1 58,8 69,0 77,0 51,2 290 61,0 56,9 64,1 58,8 69,0 77,0 51,2 310 61,0 56,9 64,1 58,8 69,0 77,0 51,2 340 61,3 57,3 64,4 59,1 69,2 77,0 51,6 380 63,3 59,3 66,4 61,1 71,2 79,0 53,6 420 61,3 57,3 64,4 59,1 69,2 77,0 51,6 450 61,8 57,8 64,9 59,6 69,7 77,5 52,1 480 62,2 58,2 65,2 59,9 70,0 77,5 52,5 510 62,2 58,2 65,2 59,9 70,0 77,5 52,5 550 63,7 59,7 66,7 61,4 71,5 79,0 54,0 590 64,2 60,2 67,2 61,9 72,0 79,5 54,5

EWAD D-SL


50 m 25 m 20 m 15 m 10 m 5 m 1 m MODEL

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EWAD D-SL


50 m 25 m 20 m 15 m 10 m 5 m 1 m MODEL

180 58,6 54,5 61,7 56,3 66,7 75,0 48,7 200 58,6 54,5 61,7 56,3 66,7 75,0 48,7 230 59,0 55,0 62,1 56,8 67,0 75,0 49,2 250 59,0 55,0 62,1 56,8 67,0 75,0 49,2 260 59,0 55,0 62,1 56,8 67,0 75,0 49,2 280 59,0 55,0 62,1 56,8 67,0 75,0 49,2 300 59,0 55,0 62,1 56,8 67,0 75,0 49,2 320 59,4 55,4 62,5 57,2 67,3 75,0 49,7 370 61,9 57,9 65,0 59,7 69,8 77,5 52,2 400 58,8 54,8 61,9 56,6 66,7 74,5 49,1 440 58,8 54,8 61,9 56,6 66,7 74,5 49,1 480 58,8 54,8 61,9 56,6 66,7 74,5 49,1 510 60,3 56,3 63,4 58,1 68,2 76,0 50,6 530 60,8 56,8 63,9 58,6 68,7 76,5 51,1

EWAD D-SS


50 m 25 m 20 m 15 m 10 m 5 m 1 m MODEL

390 60,4 56,3 63,5 58,2 68,4 76,5 50,6 440 61,3 57,3 64,4 59,1 69,2 77,0 51,6 470 61,3 57,3 64,4 59,1 69,2 77,0 51,6 510 61,3 57,3 64,4 59,1 69,2 77,0 51,6 530 62,8 58,8 65,9 60,6 70,7 78,5 53,1 560 63,3 59,3 66,4 61,1 71,2 79,0 53,6 580 63,3 59,3 66,4 61,1 71,2 79,0 53,6

EWAD D-SR


50 m 25 m 20 m 15 m 10 m 5 m 1 m MODEL

180 53,6 49,5 56,7 51,3 61,7 70,0 43,7 190 53,6 49,5 56,7 51,3 61,7 70,0 43,7 220 54,0 50,0 57,1 51,8 62,0 70,0 44,2 240 54,0 50,0 57,1 51,8 62,0 70,0 44,2 250 54,0 50,0 57,1 51,8 62,0 70,0 44,2 270 54,0 50,0 57,1 51,8 62,0 70,0 44,2 280 54,0 50,0 57,1 51,8 62,0 70,0 44,2 310 54,4 50,4 57,5 52,2 62,3 70,0 44,7 370 56,9 52,9 60,0 54,7 64,8 72,5 47,2 400 55,3 51,3 58,4 53,1 63,2 71,0 45,6 440 55,3 51,3 58,4 53,1 63,2 71,0 45,6 480 55,3 51,3 58,4 53,1 63,2 71,0 45,6 510 56,8 52,8 59,9 54,6 64,7 72,5 47,1 530 57,3 53,3 60,4 55,1 65,2 73,0 47,6

EWAD D-SX


50 m 25 m 20 m 15 m 10 m 5 m 1 m MODEL

210 49,1 45,0 52,2 46,8 57,0 65,0 39,3 230 49,5 45,4 52,6 47,2 57,3 65,0 39,7

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EWAD D-SX


50 m 25 m 20 m 15 m 10 m 5 m 1 m MODEL

250 49,5 45,4 52,6 47,2 57,3 65,0 39,7 270 49,5 45,4 52,6 47,2 57,3 65,0 39,7 290 49,5 45,4 52,6 47,2 57,3 65,0 39,7 300 49,5 45,4 52,6 47,2 57,3 65,0 39,7 310 49,5 45,4 52,6 47,2 57,3 65,0 39,7 370 49,5 45,4 52,6 47,2 57,3 65,0 39,7 410 49,5 45,4 52,6 47,2 57,3 65,0 39,7 450 50,3 46,3 53,4 48,1 58,1 65,5 40,6 490 50,8 46,8 53,9 48,6 58,6 66,0 41,1

Fluid: Water Sound power level (referred to evaporator 12/7°C, ambient 35°C full load operation) are mesuared in accordance with ISO 9614 and Eurovent 8/1 for Eurovent certified units. The certification refers only to the overall sound power level, the sound pressure is calculated from the sound power level and are for information only and not cosidered bounding

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OPERATING LIMITS

Operating Limits

Note The above graphic represents a guideline about the operating limits of the range. Please refer to Chiller Selection Software (CSS) for real operating limits working conditions for each size.

Legend: ELWT = Evaporator Leaving Water Temperature (°C) CIAT = Condenser Inlet Air Temperature (°C)

Ref.: A = Unit can only work in 'ICE mode' B = Operation with Glycol (below 4°C Evap LWT) C = Fan speed modulation required (below 18°C Condens. Air Temp. for less than 3 fans units) D = Fan speed modulation required (below 10°C Condens. Air Temp. for 3 or more fans units) E = Speedtroll required (below -10°C Condens. Air Temp.)

Table 1 - Water heat exchanger - Minimum and maximum water Δt

Legend: A = Max evaporator water Δt B = Min evaporator water Δt

Table 2 - Water heat exchanger - Fouling factors

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OPERATING LIMITS

Legend: A = Fouling factors (m2 °C / kW) B = Cooling capacity correction factor C = Power input correction factor D = EER correction factor

Table 3 - Air heat exchanger - Altitude correction factors

Legend: A = Elevation above sea level (m) B = Barometric pressure (mbar) C = Cooling capacity correction factor D = Power input correction factor - Maximum operating altitude is 2000 m above sea level - Contact factory in case the unit has to be installed at altitudes between 1000 and 2000 m above sea level

Table 4 - Minimum glycol percentage for low air ambient temperature

Legend: AAT = Air Ambient Temperature (°C) (2) A = Ethylene glycol (%) (1) B = Propylene glycol (%) (1) (1) Minimum glycol percentage to prevent freezing of water circuit at indicated air ambient temperature (2) Air ambient temperature do exceed the operating limits of the unit, a protection of water circuit may be needed in winter season at non-working conditions.

Table 5.1 - Available fan static pressure correction factors

The above data are referred to: - Fan 800 mm diameter - Fan speed 890 rpm or 900 rpm Legend: A = External Static Pressure (Pa) B = Cooling Capacity (kW) Correction factor C = Compressor Power Input (kW) Correction factor D = Reduction of Maximum Condenser Inlet Air Temperature (°C)

Table 5.2 - Available fan static pressure correction factors

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OPERATING LIMITS

The above data are referred to: - Fan 800 mm diameter - Fan speed 700 rpm or 705 rpm Legend: A = External Static Pressure (Pa) B = Cooling Capacity (kW) Correction factor C = Compressor Power Input (kW) Correction factor D = Reduction of Maximum Condenser Inlet Air Temperature (°C)

Water content in cooling circuits The cooled water distribution circuits should have minimum water content to avoid excessive compressors start and stop. In fact, each time the compressor starts up, an excessive quantity of oil goes from the compressor sump and simultaneously there is a rise in the temperature of the compressor motor’s stator due to the inrush current during the start-up. To prevent damage to the compressors, have been envisaged the application of a device to limit frequent stops and restarts. During the span of one hour there will be no more than 6 starts of the compressor. The plant side should therefore ensure that the overall water content allows a more constant functioning of the unit and consequently greater environmental comfort. The minimum water content per unit should be calculated with a certain approximation using this simplified formula:

For 2 compressors unit M (liters) = (0.1595 x NT(°C) + 3.0825) x P(kW)

where: M = minimum water content per unit expressed in litres P = cooling capacity of the unit expressed in kW ΔT = evaporator entering / leaving water temperature difference expressed in °C This formula is valid for standard microprocessor parameters. For more accurate determination of quantity of water, it is advisable to contact the designer of the plant.

Water charge, flow and quality

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OPERATING LIMITS

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COOLING PERFORMANCE

EWAD D-SS 390 440

43 40 35 30 25 46 43 40 35 30 25 46 Ta Twout

CC kW 5 405 388 367 340 322 295 458 436 411 381 361 337 PI kW 125 136 149 164 173 176 135 147 161 176 187 197 qw l/s 19,4 18,6 17,5 16,3 15,4 14,1 21,9 20,8 19,6 18,2 17,3 16,1 dpw kPa 49 46 41 36 33 28 42 38 34 30 27 24






470 510

43 40 35 30 25 46 43 40 35 30 25 46 Ta Twout







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COOLING PERFORMANCE

EWAD D-SS 530 560

43 40 35 30 25 46 43 40 35 30 25 46 Ta Twout







580

46 43 40 35 30 25 Ta Twout

CC kW 5 580 566 547 523 504 463 PI kW 159 176 195 218 235 241 qw l/s 27,8 27,1 26,2 25,0 24,1 22,1 dpw kPa 52 50 47 43 40 35






Fluid: Water Ta: Condenser inlet air temperature; Twout: Evaporator leaving water temperature (Δt 5°C) CC: Cooling capacity; PI: Power input; qw: Fluid flow rate; dpw: Fluid pressure drop * For working condition where dpw value is "Italic-Red Color" please contac factory

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COOLING PERFORMANCE

EWAD D-SL 180 200

43 40 35 30 25 46 43 40 35 30 25 46 Ta Twout

CC kW 5 192 183 173 162 155 148 206 196 185 174 167 159 PI kW 67,3 73,2 79,6 86,4 90,7 95,2 65,9 71,7 77,9 84,6 88,8 93,2 qw l/s 9,2 8,7 8,3 7,7 7,4 7,1 9,8 9,4 8,9 8,3 8,0 7,6 dpw kPa 31 29 26 23 21 20 24 22 19 17 16 15






230 250

43 40 35 30 25 46 43 40 35 30 25 46 Ta Twout

CC kW 5 232 221 211 199 192 184 253 242 230 217 209 200 PI kW 70,8 76,9 83,4 90,5 95,0 99,7 77,9 84,7 92,1 100,0 105 110 qw l/s 11,1 10,6 10,1 9,5 9,2 8,8 12,1 11,6 11,0 10,4 10,0 9,6 dpw kPa 61 57 52 47 44 40 52 48 44 40 37 34

CC kW 7 245 235 224 212 204 197 267 256 244 231 223 214 PI kW 72,9 79,0 85,6 92,8 97,4 102 80,1 87,0 94,4 103 108 113 qw l/s 11,8 11,3 10,7 10,2 9,8 9,4 12,8 12,3 11,7 11,1 10,7 10,2 dpw kPa 68 63 58 52 49 46 58 54 49 44 42 39


CC kW 11 274 263 251 238 231 222 297 285 273 259 250 241 PI kW 77,4 83,6 90,3 97,6 102 107 84,9 91,9 99,5 108 113 119 qw l/s 13,2 12,6 12,1 11,5 11,1 10,7 14,3 13,7 13,1 12,4 12,0 11,6 dpw kPa 84 78 71 65 61 57 70 65 60 55 52 48

CC kW 13 289 277 265 252 244 236 313 300 287 273 264 255 PI kW 79,8 86,0 92,8 100 105 110 87,5 94,6 102 111 116 121 qw l/s 13,9 13,3 12,8 12,1 11,7 11,3 15,1 14,5 13,8 13,1 12,7 12,3 dpw kPa 92 86 79 72 68 64 77 72 66 61 57 53


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COOLING PERFORMANCE

EWAD D-SL 260 280

43 40 35 30 25 46 43 40 35 30 25 46 Ta Twout


CC kW 7 285 273 260 246 237 228 300 287 274 259 250 240 PI kW 86,6 94,1 102 111 117 122 92,6 101 109 119 125 131 qw l/s 13,6 13,1 12,5 11,8 11,4 10,9 14,4 13,8 13,1 12,4 12,0 11,5 dpw kPa 64 59 54 49 46 43 70 64 59 53 50 47



CC kW 13 333 319 305 291 281 270 350 336 321 306 296 284 PI kW 94,5 102 111 120 126 131 101 109 119 128 135 140 qw l/s 16,0 15,4 14,7 14,0 13,5 13,0 16,9 16,2 15,5 14,7 14,2 13,6 dpw kPa 85 79 73 66 62 58 92 86 79 72 68 63


300 320

43 40 35 30 25 46 43 40 35 30 25 46 Ta Twout







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COOLING PERFORMANCE

EWAD D-SL 370 400

43 40 35 30 25 46 43 40 35 30 25 46 Ta Twout







440 480

43 40 35 30 25 46 43 40 35 30 25 46 Ta Twout







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COOLING PERFORMANCE

EWAD D-SL 510 530

43 40 35 30 25 46 43 40 35 30 25 46 Ta Twout








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COOLING PERFORMANCE

EWAD D-SR 180 190

43 40 35 30 25 46 43 40 35 30 25 46 Ta Twout







220 240

43 40 35 30 25 46 43 40 35 30 25 46 Ta Twout




CC kW 11 268 256 244 231 223 208 290 277 264 250 241 219 PI kW 78,1 84,4 91,4 98,8 104 103 86,2 93,4 101 110 115 111 qw l/s 12,9 12,3 11,7 11,1 10,7 10,0 13,9 13,3 12,7 12,0 11,6 10,5 dpw kPa 80 74 68 62 58 51 67 62 57 52 48 41



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COOLING PERFORMANCE

EWAD D-SR 250 270

43 40 35 30 25 46 43 40 35 30 25 46 Ta Twout







280 310

43 40 35 30 25 46 43 40 35 30 25 46 Ta Twout







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COOLING PERFORMANCE

EWAD D-SR 370 400

43 40 35 30 25 46 43 40 35 30 25 46 Ta Twout







440 480

43 40 35 30 25 46 43 40 35 30 25 46 Ta Twout







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COOLING PERFORMANCE

EWAD D-SR 510 530

43 40 35 30 25 46 43 40 35 30 25 46 Ta Twout








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COOLING PERFORMANCE

EWAD D-SX 210 230

43 40 35 30 25 46 43 40 35 30 25 46 Ta Twout

CC kW 5 212 201 190 178 171 163 239 228 217 205 197 189 PI kW 66,1 71,9 78,3 85,0 89,3 93,8 70,4 76,7 83,6 91,1 95,8 101 qw l/s 10,1 9,6 9,1 8,5 8,2 7,8 11,4 10,9 10,4 9,8 9,4 9,0 dpw kPa 49 44 40 36 33 30 36 33 30 27 25 24

CC kW 7 224 214 202 190 182 170 253 242 230 218 210 202 PI kW 68,4 74,4 80,8 87,6 92,0 92,8 72,5 79,0 86,0 93,5 98,3 103 qw l/s 10,8 10,2 9,7 9,1 8,7 8,1 12,1 11,6 11,0 10,4 10,0 9,6 dpw kPa 54 49 45 40 37 33 40 37 34 31 29 27



CC kW 13 263 252 239 226 210 178 294 282 270 258 249 231 PI kW 76,0 82,2 88,8 95,9 94,6 83,3 79,2 86,0 93,3 101 106 104 qw l/s 12,7 12,1 11,5 10,9 10,1 8,6 14,1 13,6 13,0 12,4 12,0 11,1 dpw kPa 73 67 61 55 48 36 53 49 45 42 39 34

CC kW 15 277 265 252 238 213 181 308 296 284 271 262 239 PI kW 78,7 85,0 91,7 98,8 91,3 80,7 81,5 88,4 95,9 104 109 104 qw l/s 13,3 12,8 12,1 11,5 10,2 8,7 14,8 14,2 13,6 13,0 12,6 11,5 dpw kPa 80 73 67 61 49 37 57 54 50 46 43 36

250 270

43 40 35 30 25 46 43 40 35 30 25 46 Ta Twout



CC kW 9 290 279 266 252 243 234 314 301 286 270 259 235 PI kW 81,8 89,2 97,0 106 111 117 92,2 100 109 118 124 119 qw l/s 13,9 13,4 12,7 12,1 11,7 11,2 15,1 14,4 13,7 12,9 12,4 11,2 dpw kPa 49 46 42 38 36 33 51 47 43 38 36 30



CC kW 15 334 321 308 294 285 249 363 349 333 315 287 246 PI kW 89,4 97,0 105 114 120 107 101 110 119 127 121 108 qw l/s 16,1 15,5 14,8 14,1 13,7 12,0 17,5 16,8 16,0 15,1 13,8 11,8 dpw kPa 64 59 55 51 48 37 66 61 56 51 43 33

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COOLING PERFORMANCE

EWAD D-SX 290 300

43 40 35 30 25 46 43 40 35 30 25 46 Ta Twout







310 370

43 40 35 30 25 46 43 40 35 30 25 46 Ta Twout







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COOLING PERFORMANCE

EWAD D-SX 410 450

43 40 35 30 25 46 43 40 35 30 25 46 Ta Twout







490

46 43 40 35 30 25 Ta Twout








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COOLING PERFORMANCE

EWAD D-XS 250 280

43 40 35 30 25 46 43 40 35 30 25 46 Ta Twout







300 330

43 40 35 30 25 46 43 40 35 30 25 46 Ta Twout







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COOLING PERFORMANCE

EWAD D-XS 350 380

43 40 35 30 25 46 43 40 35 30 25 46 Ta Twout

CC kW 5 347 339 330 319 311 303 370 363 354 343 336 327 PI kW 92,5 102 111 122 129 136 99,2 109 119 130 137 144 qw l/s 16,6 16,2 15,8 15,3 14,9 14,5 17,7 17,4 16,9 16,4 16,1 15,7 dpw kPa 50 48 46 43 41 39 56 54 52 49 47 45






400 470

43 40 35 30 25 46 43 40 35 30 25 46 Ta Twout







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COOLING PERFORMANCE

EWAD D-XS 520 580

43 40 35 30 25 46 43 40 35 30 25 46 Ta Twout







620

46 43 40 35 30 25 Ta Twout








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COOLING PERFORMANCE

EWAD D-XR 240 270

43 40 35 30 25 46 43 40 35 30 25 46 Ta Twout



CC kW 9 267 262 255 247 241 235 296 291 284 277 271 265 PI kW 69,3 76,1 83,6 91,7 96,7 102 74,6 81,9 89,9 98,6 104 110 qw l/s 12,8 12,6 12,2 11,8 11,6 11,3 14,2 13,9 13,6 13,3 13,0 12,7 dpw kPa 56 54 52 49 47 44 52 50 48 46 44 43



CC kW 15 309 303 296 287 281 254 338 333 326 318 313 305 PI kW 75,4 82,5 90,3 98,7 104 98,1 80,2 87,6 95,9 105 111 116 qw l/s 14,9 14,6 14,2 13,8 13,5 12,2 16,3 16,0 15,7 15,3 15,0 14,7 dpw kPa 73 71 68 64 62 51 66 64 62 59 58 55

300 320

43 40 35 30 25 46 43 40 35 30 25 46 Ta Twout







of 78

COOLING PERFORMANCE

EWAD D-XR 350 370

43 40 35 30 25 46 43 40 35 30 25 46 Ta Twout







390 460

43 40 35 30 25 46 43 40 35 30 25 46 Ta Twout







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COOLING PERFORMANCE

EWAD D-XR 510 560

43 40 35 30 25 46 43 40 35 30 25 46 Ta Twout







600

46 43 40 35 30 25 Ta Twout








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COOLING PERFORMANCE

EWAD D-HS 200 210

43 40 35 30 25 46 43 40 35 30 25 46 Ta Twout






CC kW 15 264 254 242 230 223 214 285 274 262 249 241 232 PI kW 74,5 80,3 86,6 93,5 97,8 102 72,8 78,5 84,7 91,3 95,5 99,8 qw l/s 12,7 12,2 11,6 11,1 10,7 10,3 13,7 13,2 12,6 12,0 11,6 11,2 dpw kPa 55 51 47 43 41 38 42 39 36 33 31 29

230 260

43 40 35 30 25 46 43 40 35 30 25 46 Ta Twout






CC kW 15 314 302 290 278 270 261 343 330 317 303 294 285 PI kW 79,7 85,7 92,3 99,4 104 109 87,4 94,1 101 109 114 120 qw l/s 15,1 14,6 14,0 13,4 13,0 12,6 16,5 15,9 15,3 14,6 14,2 13,7 dpw kPa 80 75 69 64 61 57 90 84 78 72 68 64

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COOLING PERFORMANCE

EWAD D-HS 270 290

43 40 35 30 25 46 43 40 35 30 25 46 Ta Twout



CC kW 9 314 302 289 275 266 256 332 319 305 290 281 271 PI kW 86,8 93,8 101 110 115 120 92,2 99,8 108 117 123 129 qw l/s 15,1 14,5 13,9 13,2 12,7 12,3 15,9 15,3 14,6 13,9 13,5 13,0 dpw kPa 70 65 60 55 51 48 77 71 66 60 57 53




310 340

43 40 35 30 25 46 43 40 35 30 25 46 Ta Twout







of 78

COOLING PERFORMANCE

EWAD D-HS 380 420

43 40 35 30 25 46 43 40 35 30 25 46 Ta Twout







450 480

43 40 35 30 25 46 43 40 35 30 25 46 Ta Twout







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COOLING PERFORMANCE

EWAD D-HS 510 550

43 40 35 30 25 46 43 40 35 30 25 46 Ta Twout







590

46 43 40 35 30 25 Ta Twout








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OPTIONS (TECHNICAL DATA)

Water Pump Kit

EWAD D-S EWAD D-H

Single Pump (2 poles) External pressure head

. .

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Twin Pump (2 poles) External pressure head

Note - when using mixture of water and glycol please contact the factory as above specification can change .

. .

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EWAD D-X

Single Pump (2 poles) External pressure head

. .

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Twin Pump (2 poles) External pressure head

Note - when using mixture of water and glycol please contact the factory as above specification can change .

. .

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EWAD D-S EWAD D-H

Water Pump Kit - Combination Matrix

. .

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EWAD D-X

Water Pump Kit - Combination Matrix

EWAD D-S EWAD D-H

Water Pump Kit - Technical Information

. .

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EWAD D-X

Water Pump Kit - Technical Information

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DIMENSIONAL DRAWING

1: 2: 3: 4: 5: 6: 7: 8:

Compressor Evaporator Condenser coil Electrical panel Fan Evaporator water inlet Evaporator water outlet Slot for power and control panel connection

LEGEND

A M L I H G B C F E D

2239 1117 181 2355 590 2234 EWAD180D-SL 2239 1117 181 2355 590 2234 EWAD200D-SL 2239 1117 181 2355 590 2234 EWAD180D-SR 2239 1117 181 2355 590 2234 EWAD190D-SR 2239 1117 181 2355 590 2234 EWAD200D-HS 2239 1117 181 2355 590 2234 EWAD210D-HS

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DIMENSIONAL DRAWING

1: 2: 3: 4: 5: 6: 7: 8:


LEGEND

A M L I H G B C F E D 3139 392 1875 2223 339 873 2234 EWAD390D-SS 4040 392 2450 2223 339 855 2234 EWAD440D-SS 3139 374 1911 2355 339 873 2234 EWAD470D-SS 3139 374 1911 2355 339 873 2234 EWAD510D-SS 3139 374 1911 2355 339 873 2234 EWAD530D-SS 3139 374 1911 2355 339 873 2234 EWAD560D-SS 3139 374 1911 2355 339 873 2234 EWAD580D-SS 4040 374 2486 2355 339 873 2234 EWAD230D-SL 4040 374 2486 2355 339 873 2234 EWAD250D-SL 4040 374 2486 2355 339 873 2234 EWAD260D-SL 4040 374 2486 2355 339 873 2234 EWAD280D-SL 4040 374 2486 2355 339 873 2234 EWAD300D-SL 4040 392 2450 2223 339 855 2234 EWAD320D-SL 4040 392 2450 2223 339 855 2234 EWAD370D-SL 3139 374 1911 2355 339 873 2234 EWAD400D-SL 3139 374 1911 2355 339 873 2234 EWAD440D-SL 3139 374 1911 2355 339 873 2234 EWAD480D-SL 3139 374 1911 2355 339 873 2234 EWAD510D-SL 3139 374 1911 2355 339 873 2234 EWAD530D-SL 4040 374 2486 2355 339 873 2234 EWAD220D-SR 4040 374 2486 2355 339 873 2234 EWAD240D-SR 4040 374 2486 2355 339 873 2234 EWAD250D-SR 4040 374 2486 2355 339 873 2234 EWAD270D-SR 4040 374 2486 2355 339 873 2234 EWAD280D-SR 4040 392 2450 2223 339 855 2234 EWAD310D-SR 4040 392 2450 2223 339 855 2234 EWAD370D-SR 3139 374 1911 2420 339 873 2234 EWAD400D-SR 3139 374 1911 2420 339 873 2234 EWAD440D-SR 3139 374 1911 2420 339 873 2234 EWAD480D-SR 3139 374 1911 2420 339 873 2234 EWAD510D-SR 3139 374 1911 2420 339 873 2234 EWAD530D-SR 4040 374 2486 2420 339 873 2234 EWAD210D-SX 4040 392 2450 2420 339 873 2234 EWAD230D-SX 4040 392 2450 2420 339 873 2234 EWAD250D-SX 4040 392 2450 2420 339 873 2234 EWAD270D-SX 4040 392 2450 2420 339 873 2234 EWAD290D-SX 4040 392 2450 2420 339 873 2234 EWAD300D-SX 4040 392 2450 2420 339 873 2234 EWAD310D-SX 3138 374 1911 2355 339 873 2234 EWAD370D-SX 3138 374 1911 2355 339 873 2234 EWAD410D-SX 3138 374 1911 2355 339 873 2234 EWAD450D-SX 3138 374 1911 2355 339 873 2234 EWAD490D-SX

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DIMENSIONAL DRAWING

1: 2: 3: 4: 5: 6: 7: 8:


LEGEND

A M L I H G B C F E D 4040 374 2486 2355 339 873 2234 EWAD250D-XS 4040 414 2412 2223 379 873 2234 EWAD280D-XS 4040 414 2412 2223 379 873 2234 EWAD300D-XS 4040 414 2412 2223 379 873 2234 EWAD330D-XS 4040 414 2412 2223 379 873 2234 EWAD350D-XS 4040 414 2412 2223 379 873 2234 EWAD380D-XS 4040 414 2412 2223 379 873 2234 EWAD400D-XS 4940 414 2412 2234 379 815 2234 EWAD470D-XS 4940 414 2412 2234 379 815 2234 EWAD520D-XS 4940 414 2412 2234 379 815 2234 EWAD580D-XS 4940 414 2412 2234 379 815 2234 EWAD620D-XS 3138 374 1911 2355 339 873 2234 EWAD240D-XR 4040 374 2486 2355 339 873 2234 EWAD270D-XR 4040 374 2486 2355 339 873 2234 EWAD300D-XR 4040 374 2486 2355 339 873 2234 EWAD320D-XR 4040 374 2486 2355 339 873 2234 EWAD350D-XR 4040 374 2486 2355 339 873 2234 EWAD370D-XR 4040 374 2486 2355 339 873 2234 EWAD390D-XR 4040 414 2412 2223 379 873 2234 EWAD460D-XR 4040 414 2412 2223 379 873 2234 EWAD510D-XR 4040 414 2412 2223 379 873 2234 EWAD560D-XR 4040 414 2412 2223 379 873 2234 EWAD600D-XR 4940 414 2412 2223 379 815 2234 EWAD230D-HS 4940 414 2412 2223 379 815 2234 EWAD260D-HS 4940 414 2412 2223 379 815 2234 EWAD270D-HS 4940 414 2412 2223 379 815 2234 EWAD290D-HS 4940 414 2412 2223 379 815 2234 EWAD310D-HS 3339 374 1911 2223 339 873 2234 EWAD340D-HS 3339 374 1911 2223 339 873 2234 EWAD380D-HS 4040 374 2486 2223 339 873 2234 EWAD420D-HS 4040 374 2486 2223 339 873 2234 EWAD450D-HS 4040 374 2486 2223 339 873 2234 EWAD480D-HS 4040 374 2486 2223 339 873 2234 EWAD510D-HS 4040 374 2486 2223 339 873 2234 EWAD550D-HS 4040 374 2486 2223 339 873 2234 EWAD590D-HS

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INSTALLATION NOTES

Warning Installation and maintenance of the unit must to be performed only by qualified personnel who have knowledge with local codes and regulations, and experience with this type of equipment. Must be avoided the unit installation in places that could be considered dangerous for all the maintenance operations.

Handling Care should be taken to avoid rough handling or shock due to dropping the unit. Do not push or pull the unit from anything other than the base frame. Never allow the unit to fall during unloading or moving as this may result in serious damage. To lift the unit, rings are provided in the base frame of the unit. Spreader bar and cables should be arranged to prevent damage to the condenser coil or unit cabinet.

Location The units are produced for outside installation on roofs, floors or below ground level on condition that the area is free from obstacles for the passage of the condenser air. The unit should be positioned on solid foundations and perfectly level; in the case of installation on roofs or floors, it may be advisable to arrange the use of suitable weight distribution beams. When the units are installed on the ground, a concrete base at least 250 mm wider and longer than the unit’s footprint should be laid. Furthermore, this base should withstand the unit weight mentioned in the technical data table.

Space requirements The units are air-cooled, then it is important to respect the minimum distances which guarantee the best ventilation of the condenser coils. Limitations of space reducing the air flow could cause significant reductions in cooling capacity and an increase in electricity consumption. To determinate unit placement, careful consideration must be given to assure a sufficient air flow across the condenser heat transfer surface. Two conditions must be avoided to achieve the best performance: warm air recirculation and coil starvation. Both these conditions cause an increase of condensing pressures that results in reductions in unit efficiency and capacity. Moreover the unique microprocessor has the ability to calculate the operating environment of the air cooled chiller and the capacity to optimize its performance staying on-line during abnormal conditions. Each side of the unit must be accessible after installation for periodic service. 'Fig.1' shows you minimum recommended clearance requirements. Vertical condenser air discharge must be unobstructed because the unit would have its capacity and efficiency significantly reduced. If the units are positioned in places surrounded by walls or obstacles of the same height as the units, the units should follow the minimum recommended clearance requirements shown in 'Fig.2'. In the event the obstacles are higher than the units, the minimum recommended clearance requirements are shown in 'Fig.3'. Units installed closer than the minimum recommended distance to a wall or other vertical riser may experience a combination of coil starvation and warm air recirculation, thus causing reduction in unit capacity and efficiency reductions. The microprocessor control is proactive in response “of design condition”. In the case of single or compounded influences restricting airflow to the unit, the microprocessor will act to keep the compressor(s) running (at reduced capacity) rather than allowing a shut-off on high discharge pressure. When two or more units are positioned side by side it is recommended that the condenser coils are at a minimum distance from one another as shown in 'Fig.4'; strong wind could be the cause of air warm recirculation. For other installation solutions, consult our technicians. The above recommended information are representative of general installation. A specific evaluation should be done by contractor depending on the case.

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INSTALLATION NOTES

Acoustic protection When noise level must meet special requirements, it is necessary to pay the maximum attention to ensure the perfect insulation of the unit from the support base by applying appropriate vibration-dampening devices on the unit, on the water pipes and on the electrical connections.

Storage The environment conditions have to be in the following limits:

Minimum ambient temperature: Maximum ambient temperature: Maximum R.H.:

-20°C +57°C 95% not condensing

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General The chiller will be designed and manufactured in accordance with the following European directives: • Construction of pressure vessel 97/23/EC (PED) • Machinery Directive 2006/42/EC • Low Voltage 2006/95/EC • Electromagnetic Compatibility 2004/108/EC • Electrical & Safety codes EN 60204–1 / EN 60335-2-40 • Manufacturing Quality Standards UNI – EN ISO 9001:2004 To avoid any losses, the unit will be tested at full load in the factory (at the nominal working conditions and water temperatures). The chiller will be delivered to the job site completely assembled and charged with refrigerant and oil. The installation of the chiller must comply with the manufacturer’s instructions for rigging and handling equipment. The unit will be able to start up and operate (as standard) at full load with: - outside air temperature from ............... °C to ............... °C - evaporator leaving fluid temperature between ............... °C and ............... °C

Refrigerant Only HFC 134a can be used.

Performance Chiller shall supply the following performances: • Number of chiller(s) : ............... unit(s) • Cooling capacity for single chiller : ............... kW • Power input for single chiller in cooling mode : ............... kW • Heat exchanger entering water temperature in cooling mode : ............... °C • Heat exchanger leaving water temperature in cooling mode : ............... °C • Heat exchanger water flow : ............... l/s • Nominal outside working ambient temperature in cooling mode : ............... °C Operating voltage range should be 400V ±10%, 3ph, 50Hz, voltage unbalance maximum 3%, without neutral conductor and shall only have one power connection point.

Unit description Chiller shall include as standard not less than: two independent refrigerant circuits, semi-hermetic symmetric or asymmetric type rotary single screw compressors, electronic expansion device (EEXV), refrigerant direct expansion ‘shell&tube’ heat exchanger, air-cooled condenser section, R-134a refrigerant, lubrication system, motor starting components, discharge line shut-off valve, suction line shut-off valve, control system and all components necessary for a safe and stable unit operation. The chiller will be factory assembled on a robust base frame made of galvanized steel, protected by an epoxy paint.

Sound level and vibrations Sound pressure level at 1 meter distance in free field, semispheric conditions, shall not exceed ………dB(A). The sound pressure levels must be rated in accordance to ISO 3744 (other types of rating can not be used). Vibration on the base frame should not exceed 2 mm/s.

Dimensions Unit dimensions shall not exceed following indications: - Unit length ............... mm - Unit width ............... mm - Unit height ............... mm

Compressors (Symmetric) The unit shall be equipped with: • Semi-hermetic, single-screw type with one main helical rotor meshing with gaterotor. The gaterotor will be constructed of a carbon impregnated engineered composite material. The gaterotor supports will be constructed of cast iron.

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Compressors (Asymmetric) The unit shall be equipped with: • Semi-hermetic, single-screw asymmetric type with one main helical rotor meshing with two diametrical opposed gaterotors. The gaterotors’ contact elements shall be constructed of composite material designed for extended life. Electrical motor shall be 2-pole, semi-hermetic, squirrel-cage induction type and cooled by suction gas. • The oil injection shall be used in order to get high EER (Energy Efficiency Ratio) also at high condensing pressure and low sound pressure levels in each load condition. • The compressor shall be provided with a built in, high efficiency, mesh type oil separator and oil filter. • Refrigerant system differential pressure shall provide oil injection on all moving compressor parts to correctly lubricate them. Electrical oil pump lubricating system is not allowed. • Compressor cooling must be done by refrigerant liquid injection. An external dedicated heat exchanger and additional piping to carry the oil from compressor to heat exchanger and viceversa is not allowed. • The compressor shall be direct electrical driven, without gear transmission between the screw and the electrical motor. • The compressor casing shall be provided with ports to realize economized refrigerant cycles. • The compressor must be protected by a temperature sensor for high discharge temperature and an electrical motor thermistor for high winding temperature. • The compressor shall be equipped with an electric oil heater. • The compressor shall be fully field serviceable. Compressor that must be removed and returned to the factory for service shall be unacceptable.

Evaporator (PHE) The units shall be equipped with a direct expansion plate to plate type evaporator. • The evaporator will be made of of stainless steel brazed plates and shall be linked with an electrical heater to prevent freezing down to -28°C ambient temperature, controlled by a thermostat and shall be insulated with flexible, closed cell polyurethane insulation material (20-mm thick). • The evaporator will have 1 refrigerant circuit for each compressor. • The water connections shall be VICTAULIC type connections as standard to ensure quick mechanical disconnection between the unit and the hydronic network. • The evaporator will be manufactured in accordance to PED approval. • Flow switch on evaporator available as option (shipped loose). • Water filter not available.

Evaporator (S&T) The units shall be equipped with a direct expansion shell&tube evaporator with copper tubes rolled into steel tubesheets. The evaporator shall be single-pass on both the refrigerant and water sides for pure counter-flow heat exchange and low refrigerant pressure drops. • The external shell shall be linked with an electrical heater to prevent freezing down to -28°C ambient temperature, controlled by a thermostat and shall be insulated with flexible, closed cell polyurethane insulation material (20-mm thick). • The evaporator will have 2 circuits, one for each compressor and shall be single refrigerant pass. • The water connections shall be VICTAULIC type connections as standard to ensure quick mechanical disconnection between the unit and the hydronic network. • The evaporator will be manufactured in accordance to PED approval. Water filter not available.

Condenser coil The unit shall be equipped with condenser coils constructed with internally finned seamless copper tubes and arranged in a staggered row pattern and mechanically expanded into lanced and rippled aluminum fins with full fin collars for higher efficiencies. The space between the fins is given by a collar that will increase the surface area in connection with the tubes, protecting them from ambient corrosion. • The condenser coils will have an integral subcooler circuit that provides sufficient subcooling to effectively eliminate the possibility of liquid flashing and increase the unit's efficiency with 5% to 7% without increasing in energy consumption. • The condenser coils shall be leak-tested and submitted to a pressure test with dry air.

Condenser fans The condenser fans used in conjunction with the condenser coils, shall be propeller type with glass reinforced resin blades for higher efficiencies and lower sound. Each fan shall be protected by a fan guard. • The air discharge shall be vertical and each fan must be coupled to the electrical motor, supplied as standard to IP54 and capable to work to ambient temperatures of - 20°C to + 65°C. • The condenser fans shall have as a standard a thermally protection by internal thermal motor protection and protected by circuit braker installed inside the electrical panel as a standard.

Refrigerant circuit The unit shall have two refrigerant circuits. • The circuit shall include as standard: electronic expansion device piloted by unit’s microprocessor control, compressor discharge shut-off valve, liquid line shut-off valve, sight glass with moisture indicator, replaceable filter drier, charging valves, high pressure switch, high and low pressure transducers, oil pressure transducer and insulated suction line.

Condensation control The units will be provided with an automatic control for condensing pressure which ensures the working at low external temperatures down to - …………… °C, to maintain condensing pressure. • The compressor automatically unloads when abnormal high condensing pressure is detected. This to prevent the shutdown of the refrigerant circuit (shutdown of the unit) due to a high-pressure fault.

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Low sound unit configurations (on request) The unit compressor shall be connected with unit’s metal base frame by rubber antivibration supports to prevent the transmission of vibrations to all metal unit structure, in order to control the unit sound. • The chiller shall be provided with an acoustical compressor enclosure. This enclosure shall be realized with a light, corrosion resisting aluminum structure and metal panels. The compressor sound-proof enclosure shall be internally fitted with flexible, multi-layer, high density materials.

Hydronic kit options (on request) The hydronic module shall be integrated in the chiller chassis without increasing its dimensions and includes the following elements: centrifugal pump with motor protected by a circuit breaker installed in control panel, water filling system with pressure gauge, safety valve, drain valve. • The hydronic module shall be assembled and wired to the control panel. • The water piping shall be protected against corrosion and freezing and insulated to prevent condensation. • A choice of two pump types shall be available: - in-line single pump - in-line twin pumps.

Electrical control panel Power and control shall be located in the main panel that will be manufactured to ensure protection against all weather conditions. • The electrical panel shall be IP54 and (when opening the doors) internally protected against possible accidental contact with live parts. • The main panel shall be fitted with a main switch interlocked door that shuts off power supply when opening. • The power section will include compressors and funs protection devices, compressors and fans starters and control circuit power supply.

Controller The controller will be installed as standard and it will be used to modify unit set-points and check control parameters. • A built-in display will shows chiller operating status plus temperatures and pressures of water, refrigerant and air, programmable values, set-points. • A sophisticated software with predictive logic, will select the most energy efficient combination of compressors, EEXV and condenser fans to keep stable operating conditions to maximize chiller energy efficiency and reliability. • The controller will be able to protect critical components based on external signals from its system (such as motor temperatures, refrigerant gas and oil pressures, correct phase sequence, pressure switches and evaporator). The input coming from the high pressure switch cuts all digital output from the controller in less than 50ms, this will be an additional security for the equipment. • Fast program cycle (200ms) for a precise monitoring of the system. • Floating point calculations supported for increased accuracy in P/T conversions.

Controller main features Controller shall be garantee following minimu functions: • Management of the compressor stepless capacity and fans modulation. • Chiller enabled to work in partial failure condition. • Full routine operation at condition of: - high ambient temperature value - high thermal load - high evaporator entering water temperature (start-up) • Display of evaporator entering/leaving water temperature. • Display of Outdoor Ambient Temperature. • Display of condensing-evaporating temperature and pressure, suction and discharge superheat for each circuit. • Leaving water evaporator temperature regulation (temperature tolerance = 0,1°C). • Compressor and evaporator pumps hours counter. • Display of Status Safety Devices. • Number of starts and compressor working hours. • Optimized management of compressor load. • Fan management according to condensing pressure. • Re-start in case of power failure (automatic / manual). • Soft Load (optimized management of the compressor load during the start-up). • Start at high evaporator water temperature. • Return Reset (Set Point Reset based on return water temperature). • OAT (Outside Ambient temperature) Reset. • Set point Reset (optional). • Application and system upgrade with commercial SD cards. • Ethernet port for remote or local servicing using standard web browsers. • Two different sets of default parameters could be stored for easy restore.

High Level Communications Interface (on request) The chiller shall be able to communicate to BMS (Building Management System) based on the most common protocols as: - ModbusRTU - LonWorks, now also based on the international 8040 Standard Chiller Profile and LonMark Technology - BacNet BTP certifief over IP and MS/TP (class 4) (Native) - Ethernet TCP/IP.

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