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Databook
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WATERFL2C
Water Cooled Inverter Screw
Chillers
EWWD~VZ A
Nominal capacity range: 449 - 1053 kW
Best performances at full load and part loads
Full flexibility with 3 efficiency versions and low noise option
Designed for wide application range and compact fooptrint
Performance according to EN14511-1 (2013)
WEB CSS - Rev. 10.1
01/08/2016
R1.0.0
FEATURES AND BENEFITS
Features and Benefits
Low operating cost High Flexibility and Reliability. The EWWD~VZ A is the result of careful design, aimed to optimize
the energy efficiency of the chiller and with the clear target to reduce operating costs. The chiller series features Daikin
design single screw compressor driven by inverter. Heat exchangers are flooded type for optimized heat transfer.
The EWWD~VZ A range is available with 3 different efficiency versions:
- EWWD~VZ A SS “SILVER”: average EER 5,39 (up to 5,51) and average ESEER 7,35 (up to 7,52)
- EWWD~VZ A XS “GOLD”: average EER 5,55 (up to 5,67) and average ESEER 8,01 (up to 8,22)
- EWWD~VZ A PS “PLATINUM”: average EER 5,75 (up to 5,81) and average ESEER 8,29 (up to 8,48)
Those three efficiency levels can be combined with numerous options resulting in several different available configurations.
Leading class efficiency. The EWWD~VZ A series is designed to achieve leading class efficiency at both full load and part
load operations. Compactness. The EWWD~VZ A series is designed to achieve the smallest possible footprint making the product the ideal
solution to fit though the tightest doorways and consequently the perfect product for replacement projects.
Application flexibility. The EWWD~VZ A series can satisfy a large variety of applications not limited to traditional comfort
cooling but also data centers, brine water, ice storage and high temperature heat pump (up to 65°C).
Outstanding reliability. Depending on capacity, the EWWD~VZ A series features one or two independent refrigerant
circuits in order to guarantee highest possible redundancy and simplified maintenance activities. Units are equipped with
rugged compressor design with advanced and robust composite compressor gate-rotors material. Units are factory tested
before shipment for an on-site trouble free operation.
Stepless capacity control. Cooling capacity is controlled by means of inverter driving the compressor motor. Units are
enjoying infinitely variable capacity control from 100% load down to minimum capacity which is variable depending on unit
model. No any mechanical unloading system is used. This advanced capacity control method allows the unit to perfectly
match the cooling (or heating) load and consequently providing extremely accurate water temperature control.
Variable Volume Ratio. Compressors are enjoying the Variable Volume Ratio (VVR) technology. This innovative system
allows the compressor to adapt the discharge pressure of the refrigerant to the specific operating conditions. In this way, it is
possible to prevent energy losses deriving from under or over compression phenomena that are typical of traditional
compressor technologies (with fixed volume ratio). The reduction of energy losses inside compressor brings to an increased
unit efficiency. Future readiness. The EWWD~VZ A series is designed for R134a refrigerant in order to achieve the highest possible unit
efficiency. Additionally to this, it has been designed to be compatible for “drop in” of next generation refrigerants with lower
GWP. Daikin is at full disposal to provide further information about this specific subject.
Superior control logic. The EWWD~VZ A series is enjoying MicroTech III controller that provides an easy to use control
environment. The control logic is designed to provide highest efficiency performances and continuous operation. Easy
interface with LonWorks, Bacnet, TCP/IP or Modbus communication protocols. Quiet operation. Very low sound levels are achieved at part loads thanks to the reduction of compressor rotational speed.
Compressor sound proof cabinet option is available to further reduce sound level.
Low starting current. No any current spike is experienced at start up thanks to inverter driven compressor motors. The
starting current is always lower than full load current (FLA).
Displacement power factor always > 0,95. Thanks to inverter driven compressors, the EWWD~VZ A series always
operates with a displacement power factor > 0,95 allowing to avoid power factor penalties and decreasing electrical losses in
cables and transformers.
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FEATURES AND BENEFITS
Codes and Certifications. The EWWD~VZ A series is CE marked, complying with European directive in force concerning
manufacturing and safety. Units are designed and manufactured in accordance with applicable selections of the following:
Construction of pressure vessel 2014/68/EU
Machinery Directive 2006/42/EC
Low Voltage 2014/35/EU
Electromagnetic Compatibility 2014/30/EU
Electrical & Safety codes EN60204-1/EN61439-1/EN61439-2
Manufacturing & Quality Standards UNI EN ISO 9001:2008
Environmental Management System UNI EN ISO 14001:2004
Health & Safety Management System BS OHSAS 18001:2007
Additional information related to F-GAS Regulation (EU) No 517/2014 of the European Parliament and of the Council of 16th
April 2014 on fluorinated greenhouse gases and repealing Regulation (EC) No 842/2006.
Note: Equipment contains fluorinated greenhouse gases. Actual refrigerant charge depends on the final unit construction,
details can be found on the unit nameplate.
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GENERAL CHARACTERISTICS
General Characteristics
Cabinet and structure. The cabinet is made of galvanized steel and painted to provide high resistance to corrosion. Color is
Ivory White (Munsell code 5Y7.5/1, ± RAL7044). Unit is fitted with eyehook for lifting with ropes and for an easy handling.
The weight is uniformly distributed along the base’s profiles for a simplified unit installation.
Inverter Driven Single Screw Compressor. The EWWD~VZ A series is equipped with latest Daikin design Single Screw
Compressors. This technology is enjoying highly balanced loads resulting in reduced mechanical stress for the main
components. Lifetime and reliability are in this way improved and, at the same time, vibrations and noise emissions are
reduced. The high volumetric efficiency of Daikin single screw compressors makes them the ideal solution for variable speed
applications. Thanks to inverter technology the EWWD~VZ A screw compressors are able to match the cooling output of the
unit to the actual load requirement. Compressor’s rotational speed is continuously adjusted (stepless regulation) allowing
excellent water temperature control and efficient capacity modulation.
Compressors are enjoying the Variable Volume Ratio (VVR) technology. This innovative system allows the compressor to
adapt the discharge pressure of the refrigerant to the specific operating conditions. In this way, it is possible to prevent
energy losses deriving from under or over compression phenomena that are typical of traditional compressor technologies
(with fixed volume ratio). The reduction of energy losses inside compressor brings to an increased unit efficiency.
Oil separator is integrated within the Condenser shell. Refrigerant. The EWWD~VZ A series is designed for R134a refrigerant in order to achieve the highest possible unit
efficiency. Additionally to this, it has been designed to be compatible for “drop in” of next generation refrigerants with lower
GWP. Daikin is at full disposal to provide further information about this specific subject.
Evaporator. High efficiency flooded type shell and tube heat exchanger. Evaporator tubes have been selected in order to
achieve the highest heat transfer. Optimized nucleate boiling is guaranteed by specifically designed cavities on the external
tubes’ surface. Internal tubes surface area has helical type design. The extremely high heat transfer coefficient allows the
reduction of the temperature difference between chilled water and refrigerant thus resulting in higher overall unit efficiency.
The evaporator is designed according to 2014/68/EU European standard (Construction of pressure vessel). The water side is
designed for 10 bar maximum operating pressure; vents and drain are provided. Water connections are Victaulic type as
standard, flanged connections are available as optional. As standard unit evaporator is two water passes design. Nonstandard applications may require different number of water passes (contact Factory for further information). As standard,
thermal insulation (20 mm thickness) is fitted on the external evaporator surface area.
Condenser. High efficiency shell and tube type heat exchanger. Condenser tubes have been selected in order to achieve the
highest heat transfer. Optimized condensation is achieved by finned type tube external surface area. Internal tubes surface
area has helical type design. The extremely high heat transfer coefficient allows the reduction of the temperature difference
between condenser water and refrigerant thus resulting in higher overall unit efficiency. The condenser is designed according to 2014/68/EU European standard (Construction of pressure vessel). The water side is
designed for 10 bar maximum operating pressure; vents and drain are provided. Water connections are Victaulic type as
standard, flanged connections are available as optional. Unit condenser is single water pass with counter-flow design for
optimize heat transfer between water and refrigerant. Within Condenser shell, specific section is dedicated to the oil separation. Electronic expansion valve. Unit is equipped with latest technology electronic expansion valve to achieve precise control of
refrigerant mass flow. As today’s system requires improved energy efficiency, tighter temperature control and wide operating
range, the application of electronic expansion valve is the recommended solution. Electronic expansion valve provides unique
features such as short opening and closing times, high resolution, positive shut-off function eliminating the need for
additional solenoid valve, continuous modulation of mass flow with reduced stress in the refrigerant circuit.
Refrigerant Circuit. Each unit has one or two independent refrigerant circuits and each of them includes:
- Single screw compressor inverter driven
- Refrigerant charge
- Independent refrigerant circuit into the evaporator
- Water cooled condenser
- Electronic expansion valve
- Liquid line shut off valve
- Sight glass with moisture indicator
- High pressure switch
- High pressure transducer
- Low pressure transducer
- Oil pressure transducer
- Suction temperature sensor
Electrical Panel. Power and control sections are located into the main electrical panel IP54 designed. The main panel doors
are interlocked to the main switch (standard) in order guarantee safe operation when doors are opened. The power section
includes compressor protection devices and compressor starters (inverter type).
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GENERAL CHARACTERISTICS
MicroTech III Controller. The MicroTech III control system consists of a microprocessor-based controller and a number of
extension modules, which vary depending on the unit size and configuration. The system provides the monitoring and control
functions required for an efficient and trouble free operation of the chiller. A display installed on the outside of the control panel’s door allows easy access to chiller operating status including water
temperatures and refrigerant pressures and temperatures.
A sophisticated software with predictive logic selects the most energy efficient combination of compressor load and electronic
expansion valve position keeping stable operating conditions and maximizing chiller efficiency and reliability.
In addition to normal operating functionalities, MicroTech III controller will take corrective actions in case the chiller
operating outside recommended working conditions. Unit controller is able to protect critical unit components thanks to the signals received by the various unit sensors (such as
motor temperature sensors, refrigerant and oil pressure/temperature sensors, pressure switches…..etc..). Main control features are (for more information refer to Unit Control Manual):
- Optimized management of compressors stepless capacity control through inverter drive.
- Display of evaporator entering/leaving water temperatures.
- Display of condenser entering/leaving water temperatures.
- Display of refrigerant condensing/evaporating temperatures and pressures.
- Regulation of leaving evaporator water (cooling mode) or condenser water (heating mode). Temperature tolerance
±0,1°C.
- Display of compressor working hours and number of compressor starts.
- Re-start in case of power failure (automatic or manual depending on failure type).
- Soft load (optimized management of the compressor load during the start-up).
- Set point reset.
- Master/Slave operation (up to 4 chillers connected).
Alarms signaling (for more information refer to Unit Control Manual):
- Phase loss.
- Evaporator water flow loss.
- Evaporator water freezing protection.
- External alarm.
- Low evaporator refrigerant pressure.
- High refrigerant pressure (transducer).
- High refrigerant pressure (switch).
- Low pressure ratio.
- High refrigerant discharge temperature.
- High oil pressure differential.
- High motor temperature.
Alarm logging: when alarm occurs, the alarm type, date, time and main unit working parameters are recorder and stored
into the controller memory. The last 25 alarms occurred are stored. Regulation type: Proportional-Integral-Derivative (PID) type based on the evaporator leaving water temperature set point
(cooling mode) or based on the condenser leaving water temperature set point (heating mode).
Connection to BMS: MicroTech III controlled is capable to communicate with BMS systems based on the most common
protocols such as: Modbus, LonWorks, BacNet IP and MS/TP (class 4), Ethernet TCP/IP. Communication cards (optional) are
to be selected according to the required communication protocol.
5/31
GENERAL CHARACTERISTICS
Nomenclature
6/31
OPTIONS
Standard Options
Evaporator Victaulic kit (option 20 - STANDARD). Victaulic joints and counter-pipes.
Evaporator water design pressure 10 bar (option 27 – STANDARD).
20 mm evaporator insulation (option 29 – STANDARD). Thermal insulation of the evaporator shell. Condenser Victaulic kit (option 36 - STANDARD). Victaulic joints and counter-pipes.
Condenser water design pressure 10 bar (option 47a – STANDARD).
Evaporator two passes (option 103a – STANDARD). Two passes water side design. Refer to unit dimensional drawing
for water INLET/OUTLET details. Condenser single pass (option 51 – STANDARD). Single pass water side design. Refer to unit dimensional drawing for
water INLET/OUTLET details. Water connections cannot be reversed.
Electronic expansion valve (option 60 – STANDARD). Double set point (option 10 – STANDARD). Possibility to pre-set two different chilled water temperature set points
(cooling mode) or two different hot water temperature set points (heating mode).
Compressor thermal overload relays (option 11 – STANDARD). Functionality Included in the compressor inverter
device.
Phase monitor (option 13 – STANDARD). Functionality Included in the compressor inverter device. Protect the unit in
case of phase loss or phase reversal.
Inverter compressor starter (option 14 – STANDARD). Electronic device used as starter and for compressor capacity
control.
Under/over voltage control (option 15 – STANDARD). Functionality Included in the compressor inverter device.
Hour run meter (option 68 – STANDARD). Standard functionality of unit controller.
General fault contactor (option 69 – STANDARD). Standard functionality of unit controller.
Set point reset, demand limit and alarm from an external device (option 90 – STANDARD). Standard functionality of
unit controller. Set point reset: possibility to re-set the water temperature set point by means of a 4-20 mA signal. Demand
Limit: possibility to limit unit capacity by means of 4-20 mA signal. Alarm from external device: unit controller capability to
receive an external alarm signal. The user can decide whether this alarm signal will stop the unit controller or not. Refer to
unit control manual for more information.
Main switch interlocked doors (option 97 – STANDARD). Electrical panel’s doors are interlocked with the main switch
isolator for safe operation.
Master/Slave (option 128 – STANDARD). Standard controller functionality allowing to connect up to 4 units and
providing basic sequencing functionalities such as: balancing of working hours of unit & compressors; balancing of unit loads
amongst connected units. An additional probe (NTC10K, not provided by Factory) must be installed on the common water
header and connected to the master unit. Double pressure relief valve with diverter (option 91 – STANDARD).
7/31
OPTIONS
Options on request
Heat Pump Version – including Pursuit Mode (option 07a – ON REQUEST). Reversibility on the water side. Unit
capability to follow two different set points (cooling mode or heating mode). During “cooling mode operation”, unit
microprocessor is following evaporator leaving water temperature set point. When the machine is switched to “heating mode
operation”, the unit microprocessor is following condenser leaving water temperature set point. Cooling or heating mode
operation can be selected by means of a dedicated switch installed on the unit electrical panel. If, communication card is
selected, cooling or heating mode operation can be managed by BMS. Heat Pump Version option includes 20 mm condenser
insulation (option 33).
In case pursuit mode operation is enabled via Microtech III, unit controller will try to follow bot set points (cooling and
heating). When the first set point is satisfied, either the cold or the hot one, the unit will maintain that set point. Ideal
applications are when cooling and heating loads are balanced. Pursuit mode operation is not recommended in case of
unbalanced loads (e.g. 80% of nominal cooling load and 20% of nominal heating load).
Brine Version (option 08 – ON REQUEST). Required in case of unit operation with chilled water temperatures below
+4°C. Unit will be fitted with double thermal insulation on evaporator (40 mm thickness). Brine Version option includes
compressor thermal insulation option (option 146). Refer to the unit operating envelope for more information about minimum
allowed evaporator leaving water temperatures.
Evaporator double flanges kit (option 104 – ON REQUEST). Victaulic-to-flange adapter (shipped loose and including
counter-flanges, gaskets and bolts).
Condenser double flanges kit (option 26 – ON REQUEST). Victaulic-to-flange adapter (shipped loose and including
counter-flanges, gaskets and bolts).
20 mm condenser insulation (option 33 – ON REQUEST). Thermal insulation of the condenser shell (included with option
07a – Heat Pump Version and with option 111 – High temperature kit).
Discharge line shut off valve (option 61 – ON REQUEST). Installed on the discharge line of the compressor to facilitate
maintenance operations.
Suction line shut off valve (option 62 – ON REQUEST). Installed on the suction line of the compressor to facilitate
maintenance operations.
High-pressure side manometers (option 63 – ON REQUEST).
Low-pressure side manometers (option 64 – ON REQUEST).
Compressor soundproof system (option 76-b – ON REQUEST). High performance soundproof cabinet installed around
compressor and specifically designed in order to minimize unit sound levels.
High temperature kit (option 111 – ON REQUEST). Required in case of condenser leaving water temperature higher than
approximately 48°C (note: this limit may change depending on evaporator water temperature and on specific unit
version/size. Refer to operating envelope and to chiller selection software for detailed information). Specifically selected
components are used in order to allow the unit to operate at such conditions. Unit dimensions and weight may change from
standard. High temperature kit option includes 20 mm condenser insulation (option 33) and heat pump version (option 07a).
Refrigerant leak detection (option 121 – ON REQUEST). Electronic device (shipped loose) for automatic detection of
refrigerant leak. The leak detection device should be installed within the machinery room in the most appropriate location
(refer to the leak detection device installation manual). When leak above a pre-set concentration of refrigerant (2000 ppm)
is detected, signal is sent to unit controller (a specific alarm is visualized on the unit microprocessor’s display). The Factory
does not supply interconnecting cables between leak detection device and unit controller. Knock down electrical panel (option 147 – ON REQUEST). Electrical panel dismounted from the unit and shipped
separately. Compressor thermal insulation (option 146 – ON REQUEST). 20 mm thermal insulation of compressor suction side.
(Included with option 08 – Brine version).
Cu-Ni 90-10 condenser tubes (option 50 – ON REQUEST). Condenser tubes made of Cu-Ni 90-10 material and Cu-Ni
90-10 tube sheets cladding. Epoxy ceramic coating of water headers and sacrificial anodes. Unit performances may differ
from standard. Contact local Daikin office for more details. When selecting option 50, condenser double flanges kit option
(option 26) must be selected as well.
Evaporator 3 passes (option 103b – ON REQUEST). Three passes water side evaporator. May be required in case of
evaporator water temperature difference higher than 8°C. Unit performances may differ from standard. Contact local Daikin
office for more details.
Evaporator single pass (option 103 – ON REQUEST). Single pass water side evaporator. May be required in case of
evaporator water temperature difference lower than 4°C. Unit performances may differ from standard. Contact local Daikin
office for more details.
8/31
OPTIONS
Energy meter – including current limit (option 16a – ON REQUEST). Electronic device installed within unit electrical
panel. Measures and display supply line individual phase voltage and current, active and reactive power input, active and
reactive energy consumption. An integrated RS485 module allows Modbus communication to BMS. It includes current limit
functionality. Evaporator flow switch (option 58 – ON REQUEST). Paddle flow switch shipped loose. Refer to unit installation manual
for more details.
Condenser flow switch (option 59 – ON REQUEST). Paddle flow switch shipped loose. Refer to unit installation manual
for more details.
Compressor circuit breakers (option 95 – ON REQUEST). Protection device including protection from current overload
and overcurrent. In case this option is selected, compressor fuses are removed.
Ground fault relay (option 102 – ON REQUEST). Unit shuts down in case of ground fault is detected.
Rapid restart (option 110 – ON REQUEST). Ideal solution for those critical applications that cannot afford the loose of
cooling or heating. In case of power failure unit will re-start as fast as 15 seconds from power restoration. Unit will reach full
load within 160 seconds and 180 seconds respectively for single compressor and dual compressors unit models. Refer to unit
control manual for more information about this option.
Automatic transfer switch – free standing (option 149 – ON REQUEST). Free standing panel separate from the unit
allowing to connect two separate power supply lines (e.g. main supply line and secondary line from backup generator). In
case of failure of main power supply line, the automatic transfer switch device will automatically switch to the secondary line
if power is detected.
Inverter EN61800-3 Class C2 compliant (option 150 – ON REQUEST). Additional RFI filters on the unit power supply
line. Reduces electromagnetic interferences. Increases the inverter immunity level according to residential environment and
allows its compliancy with emissions level required in C2 category.
Rubber pads (option 152 – ON REQUEST). Rubber pad mounts to be installed under the unit base frame during
installation.
Container kit (option 71 – ON REQUEST).
Transport kit (option 112 – ON REQUEST).
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TECHNICAL SPECIFICATIONS
EWWD~VZ-SS
MODEL
EWWD600V EWWD700V EWWD760V EWWD890V EWWDC10V
ZSSA1
ZSSA1
ZSSA1
ZSSA1
ZSSA1
COOLING PERFORMANCE
Capacity - Cooling
Capacity control - Type
Capacity control - Minimum capacity
Unit power input - Cooling
EER
ESEER
IPLV
kW
610
Stepless
20
110
5.51
7.25
9.08
704
Stepless
20
132
5.31
7.30
9.27
757
Stepless
20
142
5.31
7.40
9.20
894
Stepless
20
162
5.52
7.27
9.22
1,039
Stepless
20
196
5.28
7.52
9.40
IW
GPSS
IW
GPSS
IW
GPSS
IW
GPSS
IW
GPSS
mm
mm
mm
2120
1180
3460
2120
1180
3460
2120
1180
3460
2290
1240
3690
2480
1340
3830
kg
kg
2892
2977
2928
3033
2941
3053
3451
3611
4237
4488
Flooded S&T
Water
0
88
12
7
29.3
80.0
CC
Flooded S&T
Water
0
88
12
7
33.8
106
CC
Flooded S&T
Water
0
96
12
7
36.3
89.0
CC
Flooded S&T
Water
0
134
12
7
42.9
98.0
CC
Flooded S&T
Water
0
156
12
7
49.9
104
CC
S&T
Water
0
81
30
35
34.5
54.0
S&T
Water
0
102
30
35
40.2
41.0
S&T
Water
0
102
30
35
43.1
46.0
S&T
Water
0
126
30
35
50.7
44.0
S&T
Water
0
217
30
35
59.4
33.0
%
kW
CASING
Colour *
Material *
DIMENSIONS
Height
Width
Length
WEIGHT
Unit Weight
Operating Weight
HEAT EXCHANGER - EVAPORATOR
Type *
Fluid
Fouling Factor
Water Volume
Water temperature in
Water temperature out
Water flow rate
Water pressure drop
Insulation material *
l
°C
°C
l/s
kPa
HEAT EXCHANGER - CONDENSER
Type *
Fluid
Fouling Factor
Water Volume
Water temperature in
Water temperature out
Water flow rate
Water pressure drop
l
°C
°C
l/s
kPa
COMPRESSOR
Type
Oil charge
Quantity
l
No.
Inverter
Inverter
Inverter
Inverter
Inverter
Driven Single Driven Single Driven Single Driven Single Driven Single
Screw
Screw
Screw
Screw
Screw
36.0
36.0
36.0
50.0
50.0
1
1
1
1
1
SOUND LEVEL**
Sound Power - Cooling
Sound Pressure [email protected] distance Cooling
dB(A)
101
105
105
105
108
dB(A)
82
86
86
86
89
kg
No.
R134a
100
1
R134a
110
1
R134a
110
1
R134a
170
1
R134a
180
1
mm
mm
141.3
168.3
141.3
168.3
141.3
168.3
168.3
219.1
219.1
219.1
REFRIGERANT CIRCUIT
Refrigerant type
Refrigerant charge
N. of circuits
PIPING CONNECTIONS
Evaporator water inlet/outlet
Condenser water inlet/outlet
All the perfrormances (Cooling capacity, unit power input in cooling and EER) are based on the following conditions: evaporator 12.0/7.0°C;
condenser 30.0/35.0°C, unit at full load operation; operating fluid: Water; fouling factor = 0. (*) IW: Ivory White; GPSS: Galvanized and
Painted Steel Sheet; S&T: Single Pass Shell & Tube; CC:Closed Cell; (**) The values are according to ISO 3744 and are referred to: evaporator
12/7° C, condenser 30/35° C, full load operation.
10/31
TECHNICAL SPECIFICATIONS
EWWD~VZ-XS
MODEL
EWWD450V EWWD500V EWWD610V EWWD710V EWWD800V EWWD900V
ZXSA1
ZXSA1
ZXSA1
ZXSA1
ZXSA1
ZXSA1
COOLING PERFORMANCE
Capacity - Cooling
Capacity control - Type
Capacity control - Minimum capacity
Unit power input - Cooling
EER
ESEER
IPLV
kW
449
Stepless
20
81.1
5.53
7.51
9.42
501
Stepless
20
89.6
5.58
7.92
9.59
613
Stepless
20
108
5.64
8.10
9.52
713
Stepless
20
128
5.54
8.20
9.66
793
Stepless
20
146
5.43
8.22
9.64
901
Stepless
20
158
5.67
7.92
9.48
IW
GPSS
IW
GPSS
IW
GPSS
IW
GPSS
IW
GPSS
IW
GPSS
mm
mm
mm
2090
1180
3460
2120
1180
3460
2120
1180
3690
2230
1220
3690
2290
1240
3690
2480
1340
3830
kg
kg
2968
3098
2911
3006
3102
3274
3470
3648
3451
3611
4257
4518
Flooded S&T
Water
0
70
12
7
21.6
89.0
CC
Flooded S&T
Water
0
88
12
7
24.0
63.0
CC
Flooded S&T
Water
0
136
12
7
29.4
59.0
CC
Flooded S&T
Water
0
134
12
7
34.2
63.0
CC
Flooded S&T
Water
0
134
12
7
38.0
55.0
CC
Flooded S&T
Water
0
168
12
7
43.2
67.0
CC
S&T
Water
0
81
30
35
25.4
31.0
S&T
Water
0
92
30
35
28.3
28.0
S&T
Water
0
126
30
35
34.7
22.0
S&T
Water
0
145
30
35
40.4
20.0
S&T
Water
0
126
30
35
45.2
24.0
S&T
Water
0
217
30
35
50.9
25.0
%
kW
CASING
Colour *
Material *
DIMENSIONS
Height
Width
Length
WEIGHT
Unit Weight
Operating Weight
HEAT EXCHANGER - EVAPORATOR
Type *
Fluid
Fouling Factor
Water Volume
Water temperature in
Water temperature out
Water flow rate
Water pressure drop
Insulation material *
l
°C
°C
l/s
kPa
HEAT EXCHANGER - CONDENSER
Type *
Fluid
Fouling Factor
Water Volume
Water temperature in
Water temperature out
Water flow rate
Water pressure drop
l
°C
°C
l/s
kPa
COMPRESSOR
Type
Oil charge
Quantity
l
No.
Inverter
Inverter
Inverter
Inverter
Inverter
Inverter
Driven Single Driven Single Driven Single Driven Single Driven Single Driven Single
Screw
Screw
Screw
Screw
Screw
Screw
32.0
32.0
36.0
36.0
50.0
50.0
1
1
1
1
1
1
SOUND LEVEL**
Sound Power - Cooling
Sound Pressure [email protected] distance Cooling
dB(A)
97
99
101
105
105
105
dB(A)
78
80
82
86
86
86
kg
No.
R134a
95
1
R134a
95
1
R134a
100
1
R134a
110
1
R134a
170
1
R134a
170
1
mm
mm
141.3
168.3
141.3
168.3
141.3
219.1
168.3
219.1
168.3
219.1
219.1
219.1
REFRIGERANT CIRCUIT
Refrigerant type
Refrigerant charge
N. of circuits
PIPING CONNECTIONS
Evaporator water inlet/outlet
Condenser water inlet/outlet
All the perfrormances (Cooling capacity, unit power input in cooling and EER) are based on the following conditions: evaporator 12.0/7.0°C;
condenser 30.0/35.0°C, unit at full load operation; operating fluid: Water; fouling factor = 0. (*) IW: Ivory White; GPSS: Galvanized and
Painted Steel Sheet; S&T: Single Pass Shell & Tube; CC:Closed Cell; (**) The values are according to ISO 3744 and are referred to: evaporator
12/7° C, condenser 30/35° C, full load operation.
11/31
TECHNICAL SPECIFICATIONS
EWWD~VZ-XS
MODEL
EWWDC11V
ZXSA1
COOLING PERFORMANCE
Capacity - Cooling
Capacity control - Type
Capacity control - Minimum capacity
Unit power input - Cooling
EER
ESEER
IPLV
kW
%
kW
1,053
Stepless
20
192
5.46
8.17
9.58
CASING
Colour *
Material *
IW
GPSS
DIMENSIONS
Height
Width
Length
mm
mm
mm
2480
1340
3830
kg
kg
4552
4860
WEIGHT
Unit Weight
Operating Weight
HEAT EXCHANGER - EVAPORATOR
Type *
Fluid
Fouling Factor
Water Volume
Water temperature in
Water temperature out
Water flow rate
Water pressure drop
Insulation material *
l
°C
°C
l/s
kPa
Flooded S&T
Water
0
199
12
7
50.4
58.0
CC
HEAT EXCHANGER - CONDENSER
Type *
Fluid
Fouling Factor
Water Volume
Water temperature in
Water temperature out
Water flow rate
Water pressure drop
l
°C
°C
l/s
kPa
S&T
Water
0
241
30
35
59.9
25.0
l
No.
Inverter
Driven Single
Screw
50.0
1
dB(A)
108
dB(A)
89
kg
No.
R134a
180
1
mm
mm
219.1
219.1
COMPRESSOR
Type
Oil charge
Quantity
SOUND LEVEL**
Sound Power - Cooling
Sound Pressure [email protected] distance Cooling
REFRIGERANT CIRCUIT
Refrigerant type
Refrigerant charge
N. of circuits
PIPING CONNECTIONS
Evaporator water inlet/outlet
Condenser water inlet/outlet
All the perfrormances (Cooling capacity, unit power input in cooling and EER) are based on the following conditions: evaporator 12.0/7.0°C;
condenser 30.0/35.0°C, unit at full load operation; operating fluid: Water; fouling factor = 0. (*) IW: Ivory White; GPSS: Galvanized and
Painted Steel Sheet; S&T: Single Pass Shell & Tube; CC:Closed Cell; (**) The values are according to ISO 3744 and are referred to: evaporator
12/7° C, condenser 30/35° C, full load operation.
12/31
TECHNICAL SPECIFICATIONS
EWWD~VZ-PS
MODEL
EWWD505V EWWD715V EWWD910V
ZPSA1
ZPSA1
ZPSA1
COOLING PERFORMANCE
Capacity - Cooling
Capacity control - Type
Capacity control - Minimum capacity
Unit power input - Cooling
EER
ESEER
IPLV
kW
505
Stepless
20
87.5
5.77
8.15
9.61
718
Stepless
20
126
5.66
8.48
9.68
908
Stepless
20
156
5.81
8.25
9.57
IW
GPSS
IW
GPSS
IW
GPSS
mm
mm
mm
2090
1180
3690
2430
1330
3690
2480
1340
3830
kg
kg
3247
3375
4082
4349
4346
4660
Flooded S&T
Water
0
96
12
7
24.2
55.0
CC
Flooded S&T
Water
0
168
12
7
34.4
42.0
CC
Flooded S&T
Water
0
199
12
7
43.5
44.0
CC
S&T
Water
0
126
30
35
28.5
15.0
S&T
Water
0
217
30
35
40.6
17.0
S&T
Water
0
241
30
35
51.2
19.0
%
kW
CASING
Colour *
Material *
DIMENSIONS
Height
Width
Length
WEIGHT
Unit Weight
Operating Weight
HEAT EXCHANGER - EVAPORATOR
Type *
Fluid
Fouling Factor
Water Volume
Water temperature in
Water temperature out
Water flow rate
Water pressure drop
Insulation material *
l
°C
°C
l/s
kPa
HEAT EXCHANGER - CONDENSER
Type *
Fluid
Fouling Factor
Water Volume
Water temperature in
Water temperature out
Water flow rate
Water pressure drop
l
°C
°C
l/s
kPa
COMPRESSOR
Type
Oil charge
Quantity
l
No.
Inverter
Inverter
Inverter
Driven Single Driven Single Driven Single
Screw
Screw
Screw
36.0
40.0
50.0
1
1
1
SOUND LEVEL**
Sound Power - Cooling
Sound Pressure [email protected] distance Cooling
dB(A)
99
105
105
dB(A)
80
86
86
kg
No.
R134a
100
1
R134a
150
1
R134a
180
1
mm
mm
141.3
219.1
219.1
219.1
219.1
219.1
REFRIGERANT CIRCUIT
Refrigerant type
Refrigerant charge
N. of circuits
PIPING CONNECTIONS
Evaporator water inlet/outlet
Condenser water inlet/outlet
All the perfrormances (Cooling capacity, unit power input in cooling and EER) are based on the following conditions: evaporator 12.0/7.0°C;
condenser 30.0/35.0°C, unit at full load operation; operating fluid: Water; fouling factor = 0. (*) IW: Ivory White; GPSS: Galvanized and
Painted Steel Sheet; S&T: Single Pass Shell & Tube; CC:Closed Cell; (**) The values are according to ISO 3744 and are referred to: evaporator
12/7° C, condenser 30/35° C, full load operation.
13/31
ELECTRICAL SPECIFICATIONS
EWWD~VZ-SS
MODEL
EWWD600V EWWD700V EWWD760V EWWD890V EWWDC10V
ZSSA1
ZSSA1
ZSSA1
ZSSA1
ZSSA1
POWER SUPPLY
Phases
Frequency
Voltage
Voltage tolerance Minimum
Voltage tolerance Maximum
No.
Hz
V
%
%
3
50
400
-10%
10%
3
50
400
-10%
10%
3
50
400
-10%
10%
3
50
400
-10%
10%
3
50
400
-10%
10%
A
A
A
A
179
171
256
282
214
202
306
336
245
220
350
385
295
249
421
463
344
300
491
540
No.
V
%
%
A
3
400
-10%
10%
256
VFD
3
400
-10%
10%
306
VFD
3
400
-10%
10%
350
VFD
3
400
-10%
10%
421
VFD
3
400
-10%
10%
491
VFD
UNIT
Maximum starting current
Nominal running current cooling
Maximum running current
Maximum current for wires sizing
COMPRESSORS
Phases
Voltage
Voltage tolerance Minimum
Voltage tolerance Maximum
Maximum running current
Starting method
Allowed voltage tolerance ± 10%. Voltage unbalance between phases must be within ± 3%. Maximum starting current: starting current of biggest
compressor plus current of the other compressor at 75% of maximum load. In case of inverter driven units, no inrush current at start up is experienced.
Nominal running current in cooling is referred to the following conditions: evaporator 12/7°C; condenser 30/35°C. Maximum running current is based on
max compressor absorbed current in its envelope. Maximum current for wires sizing is based on minimum allowed voltage. Maximum current for wires
sizing: compressors full load ampere x 1,1. The data are referred to the standard unit without options. All data are subject to change without notice.
Please refer to unit nameplate data.
14/31
ELECTRICAL SPECIFICATIONS
EWWD~VZ-XS
MODEL
EWWD450V EWWD500V EWWD610V EWWD710V EWWD800V EWWD900V
ZXSA1
ZXSA1
ZXSA1
ZXSA1
ZXSA1
ZXSA1
POWER SUPPLY
Phases
Frequency
Voltage
Voltage tolerance Minimum
Voltage tolerance Maximum
No.
Hz
V
%
%
3
50
400
-10%
10%
3
50
400
-10%
10%
3
50
400
-10%
10%
3
50
400
-10%
10%
3
50
400
-10%
10%
3
50
400
-10%
10%
A
A
A
A
155
126
222
244
173
140
247
272
179
171
256
282
214
201
306
336
256
229
366
403
295
249
421
463
No.
V
%
%
A
3
400
-10%
10%
222
VFD
3
400
-10%
10%
247
VFD
3
400
-10%
10%
256
VFD
3
400
-10%
10%
306
VFD
3
400
-10%
10%
366
VFD
3
400
-10%
10%
421
VFD
UNIT
Maximum starting current
Nominal running current cooling
Maximum running current
Maximum current for wires sizing
COMPRESSORS
Phases
Voltage
Voltage tolerance Minimum
Voltage tolerance Maximum
Maximum running current
Starting method
MODEL
EWWDC11V
ZXSA1
POWER SUPPLY
Phases
Frequency
Voltage
Voltage tolerance Minimum
Voltage tolerance Maximum
No.
Hz
V
%
%
3
50
400
-10%
10%
A
A
A
A
344
299
491
540
No.
V
%
%
A
3
400
-10%
10%
491
VFD
UNIT
Maximum starting current
Nominal running current cooling
Maximum running current
Maximum current for wires sizing
COMPRESSORS
Phases
Voltage
Voltage tolerance Minimum
Voltage tolerance Maximum
Maximum running current
Starting method
Allowed voltage tolerance ± 10%. Voltage unbalance between phases must be within ± 3%. Maximum starting current: starting current of biggest
compressor plus current of the other compressor at 75% of maximum load. In case of inverter driven units, no inrush current at start up is experienced.
Nominal running current in cooling is referred to the following conditions: evaporator 12/7°C; condenser 30/35°C. Maximum running current is based on
max compressor absorbed current in its envelope. Maximum current for wires sizing is based on minimum allowed voltage. Maximum current for wires
sizing: compressors full load ampere x 1,1. The data are referred to the standard unit without options. All data are subject to change without notice.
Please refer to unit nameplate data.
15/31
ELECTRICAL SPECIFICATIONS
EWWD~VZ-PS
MODEL
EWWD505V EWWD715V EWWD910V
ZPSA1
ZPSA1
ZPSA1
POWER SUPPLY
Phases
Frequency
Voltage
Voltage tolerance Minimum
Voltage tolerance Maximum
No.
Hz
V
%
%
3
50
400
-10%
10%
3
50
400
-10%
10%
3
50
400
-10%
10%
A
A
A
A
173
138
247
272
214
200
306
336
295
247
421
463
No.
V
%
%
A
3
400
-10%
10%
247
VFD
3
400
-10%
10%
306
VFD
3
400
-10%
10%
421
VFD
UNIT
Maximum starting current
Nominal running current cooling
Maximum running current
Maximum current for wires sizing
COMPRESSORS
Phases
Voltage
Voltage tolerance Minimum
Voltage tolerance Maximum
Maximum running current
Starting method
Allowed voltage tolerance ± 10%. Voltage unbalance between phases must be within ± 3%. Maximum starting current: starting current of biggest
compressor plus current of the other compressor at 75% of maximum load. In case of inverter driven units, no inrush current at start up is experienced.
Nominal running current in cooling is referred to the following conditions: evaporator 12/7°C; condenser 30/35°C. Maximum running current is based on
max compressor absorbed current in its envelope. Maximum current for wires sizing is based on minimum allowed voltage. Maximum current for wires
sizing: compressors full load ampere x 1,1. The data are referred to the standard unit without options. All data are subject to change without notice.
Please refer to unit nameplate data.
16/31
SOUND LEVELS
EWWD~VZ-SS
Sound pressure level at 1 m from the unit (rif. 2 x 10-5 Pa)
MODEL
63 Hz
125 Hz
250 Hz
500 Hz
1000 Hz
2000 Hz
4000 Hz
8000 Hz
db(A)
Power db
(A)
600
700
760
890
C10
65.7
69.7
69.7
69.7
72.7
67.5
71.5
71.5
71.5
74.5
74.5
78.5
78.5
78.5
81.5
82.2
86.2
86.2
86.2
89.2
75.8
79.8
79.8
79.8
82.8
73.8
77.8
77.8
77.8
80.8
65.7
69.7
69.7
69.7
72.7
58.3
62.3
62.3
62.3
65.3
82
86
86
86
89
101
105
105
105
108
The values are according to ISO 3744 and are referred to: evaporator 12/7° C, condenser 30/35° C, full load operation.
17/31
SOUND LEVELS
EWWD~VZ-XS
Sound pressure level at 1 m from the unit (rif. 2 x 10-5 Pa)
MODEL
63 Hz
125 Hz
250 Hz
500 Hz
1000 Hz
2000 Hz
4000 Hz
8000 Hz
db(A)
Power db
(A)
450
58.4
66.2
76.0
73.2
73.9
72.0
62.9
53.7
78
97
500
610
60.4
65.7
68.2
67.5
78.0
74.5
75.2
82.2
75.9
75.8
74.0
73.8
64.9
65.7
55.7
58.3
80
82
99
101
710
800
69.7
69.7
71.5
71.5
78.5
78.5
86.2
86.2
79.8
79.8
77.8
77.8
69.7
69.7
62.3
62.3
86
86
105
105
900
C11
69.7
72.7
71.5
74.5
78.5
81.5
86.2
89.2
79.8
82.8
77.8
80.8
69.7
72.7
62.3
65.3
86
89
105
108
The values are according to ISO 3744 and are referred to: evaporator 12/7° C, condenser 30/35° C, full load operation.
18/31
SOUND LEVELS
EWWD~VZ-PS
Sound pressure level at 1 m from the unit (rif. 2 x 10-5 Pa)
MODEL
63 Hz
125 Hz
250 Hz
500 Hz
1000 Hz
2000 Hz
4000 Hz
8000 Hz
db(A)
Power db
(A)
505
60.4
68.2
78.0
75.2
75.9
74.0
64.9
55.7
80
99
715
69.7
71.5
78.5
86.2
79.8
77.8
69.7
62.3
86
105
910
69.7
71.5
78.5
86.2
79.8
77.8
69.7
62.3
86
105
The values are according to ISO 3744 and are referred to: evaporator 12/7° C, condenser 30/35° C, full load operation.
19/31
OPERATING LIMITS
Operating Limits
EWWD-VZSS - Silver Version
Legend:
ELWT: Evaporator Leaving Water Temperature (°C)
CLWT: Condenser Leaving Water Temperature (°C)
Ref. 1: Standard Unit.
Ref. 2: Standard Unit plus Brine Version (option 08 - on request).
Ref. 3: Standard Unit plus High temperature kit (option 111 - on request).
Ref. 4: Standard Unit plus High temperature kit (option 111 - on request) plus Brine Version (option 08 - on request).
Notes:
- The above graph refers to the unit operating at full load. Unit may be able to operate outside the above envelope with
compressors unloading. Please contact factory for further details.
- For operation with EWLT below 4°C, the unit must operate with glycol mixture. The glycol percentage must be provided
according to the minimum ELWT needed.
- The above graphic represents a guideline about the operating limits of the range. Please refer to the latest Chiller Selection
Software (CSS) for real operating limits working conditions for each size.
- In areas 2, 3 and 4 chiller may not unload to the minimum capacity. Please refer to chiller selection software.
20/31
OPERATING LIMITS
Operating
Limits
EWWD-VZXS & EWWD-VZPS - Gold & Platinum Version
Legend:
ELWT: Evaporator Leaving Water Temperature (°C)
CLWT: Condenser Leaving Water Temperature (°C)
Ref. 1: Standard Unit.
Ref. 2: Standard Unit plus Brine Version (option 08 - on request).
Ref. 3: Standard Unit plus High temperature kit (option 111 - on request).
Ref. 4: Standard Unit plus High temperature kit (option 111 - on request) plus Brine Version (option 08 - on request).
Notes:
- The above graph refers to the unit operating at full load. Unit may be able to operate outside the above envelope with
compressors unloading. Please contact factory for further details.
- For operation with EWLT below 4°C, the unit must operate with glycol mixture. The glycol percentage must be provided
according to the minimum ELWT needed.
- The above graphic represents a guideline about the operating limits of the range. Please refer to the latest Chiller Selection
Software (CSS) for real operating limits working conditions for each size.
- In areas 2, 3 and 4 chiller may not unload to the minimum capacity. Please refer to chiller selection software.
21/31
OPERATING LIMITS
Water heat exchangers - maximum/maximum water Δt
The minimum and maximum allowed Δt at full load conditions are respectively 4°C and 8°C. Contact factory in case lower or
higher Δt are required.
Requirements for operation and storage
Unit is designed for indoor installation only.
Environmental conditions must be within the following limits:
Limits for operation:
- Maximum ambient temperature: 42°C
- Minimum ambient temperature: 5°C
- Maximum relative humidity: 95% not condensing
Limits for storage:
- Maximum ambient temperature 50°C
- Minimum ambient temperature: - 20°C
- Maximum relative humidity: 95% not condensing
Storage below the minimum temperature may cause damage to components.
Storage above the maximum temperature causes opening of safety valves.
Storage in condensing atmosphere may damage electronic components.
Water treatment
Before putting the unit into operation, clean the water circuit. Dirt, scales, corrosion debris and other materials can
accumulate inside the heat exchanger and reduce its heat exchanging capacity. Pressure drops can increase as well, thus
reducing water flow. Proper water treatment therefore reduces the risk of corrosion, erosion, scaling, etc.. The most
appropriate water treatment must be determined locally, according to the type of system and water characteristics. The
manufacturer is not responsible for damage to or malfunctioning of equipment caused by improperly treated water.
22/31
OPERATING LIMITS
23/31
DIMENSIONAL DRAWING
LEGEND
1. ELECTRICAL PANEL
2. POWER SUPPLY CABLE ENTRY
3. EVAPORATOR WATER INLET
4. EVAPORATOR WATER OUTLET
5. CONDENSER WATER INLET
6. CONDENSER WATER OUTLET
Unit dimensions below are in mm
MODEL
A
B
C
D
E
F
G
H
I
L
M
N
O
EWWD600VZSSA1
EWWD700VZSSA1
EWWD760VZSSA1
EWWD890VZSSA1
EWWDC10VZSSA1
1179
1179
1179
1219
1303
3634
3634
3634
3510
3822
2122
2122
2122
2292
2487
830
830
830
999
1013
431
431
431
431
485
965
965
965
981
1101
270
270
270
340
292
232
232
232
135
326
185
185
185
205
150
168.3
168.3
168.3
219.1
219.1
139.7
139.7
139.7
168.3
219.1
3170
3170
3170
3170
3170
490
490
490
550
670
24/31
DIMENSIONAL DRAWING
LEGEND
1. ELECTRICAL PANEL
2. POWER SUPPLY CABLE ENTRY
3. EVAPORATOR WATER INLET
4. EVAPORATOR WATER OUTLET
5. CONDENSER WATER INLET
6. CONDENSER WATER OUTLET
Unit dimensions below are in mm
MODEL
A
B
C
D
E
F
G
H
I
L
M
N
O
EWWD450VZXSA1
EWWD500VZXSA1
EWWD610VZXSA1
EWWD710VZXSA1
EWWD800VZXSA1
EWWD900VZXSA1
EWWDC11VZXSA1
1179
1179
1179
1219
1877
1303
1303
3634
3634
3490
3510
3510
3822
3822
2093
2093
2122
2234
2234
2487
2487
828
828
830
762
762
1013
1013
431
431
431
431
431
485
485
965
965
965
981
981
1101
1101
270
270
270
340
340
292
292
232
232
135
135
135
326
326
185
185
185
205
205
150
150
168.3
168.3
219.1
219.1
219.1
219.1
219.1
139.7
139.7
139.7
168.3
168.3
219.1
219.1
3170
3170
3170
3170
3170
3170
3170
490
490
550
550
550
670
670
25/31
DIMENSIONAL DRAWING
LEGEND
1. ELECTRICAL PANEL
2. POWER SUPPLY CABLE ENTRY
3. EVAPORATOR WATER INLET
4. EVAPORATOR WATER OUTLET
5. CONDENSER WATER INLET
6. CONDENSER WATER OUTLET
Unit dimensions below are in mm
MODEL
A
B
C
D
E
F
G
H
I
L
M
N
O
EWWD505VZPSA1
EWWD715VZPSA1
1179
1276
3490
3822
2093
2429
757
822
431
485
965
1101
270
292
135
326
185
150
219.1
219.1
139.7
219.1
3170
3170
550
670
EWWD910VZPSA1
1303
3822
2487
1013
485
1101
1101
326
150
219.1
219.1
3170
670
26/31
INSTALLATION NOTES
Installation Notes
Warning Installation and maintenance of the unit must 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 Avoid bumping and/or jolting during loading/unloading unit from the truck and moving it. Secure the unit inside
the truck to prevent it from moving and causing damages. Do not allow any part of the unit to fall during transportation or
loading/unloading.
Use extreme caution when handling the unit to prevent damage to the control or the refrigerant piping. The unit mustbe
lifted by attaching cables or chains at the lifting holes in each corner. For more information please refer to the unit
Installation Manual.
Location Unit is designed for indoor installation only. The unit must be mounted on a leveled base of concrete or steel. The
unit must be installed on a robust and perfectly leveled foundation; it might be necessary to use weight distribution beams.
Rubber mounts/pads as well as vibration isolators in all water piping connected to the chiller are recommended to avoid
transmission of vibration and noise.
Space requirements Every side of the machine must be accessible for all post installation maintanance activities. The
minimum space required is shown on the following drawing:
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 anti-vibration devices on the unit, on
the water pipes and on the electrical connections.
Storage The environment conditions have to be in the following limits:
- Maximum ambient temperature 50°C
- Minimum ambient temperature: - 20°C
- Maximum relative humidity: 95% not condensing
Storage below the minimum temperature may cause damage to components. Storage above the maximum temperature causes opening of safety valves. Storage in condensing atmosphere may damage electronic components
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TECHNICAL SPECIFICATIONS
Technical Specifications
General The chiller will be designed and manufactured in accordance with the following European directives:
- Construction of pressure vessel 2014/68/EU
- Machinery Directive 2006/42/EC
- Low Voltage 2014/35/EU
- Electromagnetic Compatibility 2014/30/EU
- Electrical & Safety codes EN60204-1/EN61439-1/EN61439-2
- Manufacturing & Quality Standards UNI EN ISO 9001:2008
- Environmental Management System UNI EN ISO 14001:2004
- Health & Safety Management System BS OHSAS 18001:2007
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:
- evaporator leaving fluid temperature between ............... °C and ............... °C
- condenser 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
- Evaporator heat exchanger entering water temperature in cooling mode: …………… °C
- Evaporator heat exchanger leaving water temperature in cooling mode: …………… °C
- Evaporator heat exchanger water flow: …………… l/s
- Condenser heat exchanger entering water temperature in cooling mode: …………… °C
- Condenser heat exchanger leaving water temperature in cooling mode: …………… °C
- Condenser heat exchanger water flow: …………… l/s
Operating voltage range should be 400V ±10%, 3ph, 50Hz (or 380V ±10%, 3ph, 60Hz), voltage unbalance maximum 3%,
without neutral conductor and shall only have one power connection point.
Unit description Sound level and vibrations Sound pressure level at 1 meter distance in free field, semispherical
conditions, shall not exceed ………dB(A). The sound pressure levels must be rated in accordance to ISO 3744. 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 The unit shall be equipped with: - Semi-hermetic, single-screw type with one main helical rotor and two gate rotors. The gate rotors will be constructed of a
carbon impregnated engineered composite material. The gate rotor supports will be constructed of cast iron.
- Compressor’s rotational speed shall be continuously adjusted by means of inverter (stepless regulation) allowing accurate
water temperature control and efficient capacity modulation.
- Compressor shall be able to adapt the discharge pressure of the refrigerant to any operating conditions by means of
variable volume ratio system.
- Refrigerant system differential pressure shall provide oil injection on all moving compressor parts to correctly lubricate
them. Electrical oil pump lubricating system is not acceptable.
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TECHNICAL SPECIFICATIONS
- The compressor’s oil cooling must be realized, when necessary, by refrigerant liquid injection. External oil cooling system
will not be accepted.
- The oil separator shall be integrated within the condenser and shall not require oil pump - The compressor shall be direct driven type, without gear transmission between the screw and the electrical motor. - Compressor shall be equipped with two thermal protections realized by means of thermistors for high temperature
protection: one temperature sensor to protect electrical motor and another sensor to protect unit and lubricating oil from
high discharge gas temperature. - No any oil-crankcase heater will be accepted on the unit. - Compressor shall be fully field serviceable.
Evaporator The units shall be equipped with a flooded shell & tube evaporator with water flowing inside the tubes and
refrigerant boiling outside. The tubes are enhanced for maximum heat transfer and rolled into steel tube sheet and sealed.
The tubes are individually replaceable.
- The external shell shall be insulated with flexible, closed cell polyurethane insulation material (20-mm thick). - 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 standard (2014/68/EU).
- The water side shall be designed for 10 bar of maximum operating pressure; vents and drain shall be provided.
Condenser The unit shall be equipped with single-pass counter-flow shell & tube heat exchanger with water flowing inside
the tubes and refrigerant condensing outside.
The lower side of the condenser shall be provided with subcooling section for improved unit performances. The tubes shall be
enhanced for maximum heat transfer and rolled into steel tube sheet and sealed. The tubes shall be individually replaceable.
- The water connections shall be VICTAULIC type connections as standard to ensure quick mechanical disconnection between
the unit and the hydronic network.
- The condenser will be manufactured in accordance to PED standard (2014/68/EU).
- The water side shall be designed for 10 bar of maximum operating pressure; vents and drain shall be provided.
- The oil separating section shall be integrated within the condenser.
Refrigerant circuit The unit shall have one or two independent refrigerant circuits and one variable frequency driver per
compressor (Inverter).
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 compressor automatically unloads when high condensing pressure is detected. This to prevent
the shutdown of the refrigerant circuit (shutdown of the unit) due to a high-pressure fault.
Low sound unit configurations (on request) The chiller shall be provided with an acoustical compressor enclosure. This
enclosure shall be realized with a light, corrosion resistant aluminum structure and metal panels. The compressor soundproof enclosure shall be internally fitted with flexible, multi-layer, high density materials.
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 (with the doors opened) internally protected against possible accidental contact with
electrical components (IP20).
- The main panel shall be fitted with a main switch interlocked door.
- The power section will include compressors protection devices, compressors 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 display installed on the outside of the control panel’s door will allow easy access to chiller operating status including water
temperatures and refrigerant pressures and temperatures.
A sophisticated software with predictive logic will select the most energy efficient combination of compressor load and
electronic expansion valve position keeping stable operating conditions and maximizing chiller efficiency and reliability. 29/31
TECHNICAL SPECIFICATIONS
In addition to normal operating functionalities, unit controller will take corrective actions in case the chiller operating outside
recommended working conditions. Unit controller shall be able to protect critical unit components thanks to the signals received by the various unit sensors
(such as motor temperature sensors, refrigerant and oil pressure/temperature sensors, pressure switches…..etc..).
Controller main features Controller shall guarantee following minimum functions: - Optimized management of compressors stepless capacity control through inverter drive.
- Display of evaporator entering/leaving water temperatures.
- Display of condenser entering/leaving water temperatures.
- Display of refrigerant condensing/evaporating temperatures and pressures.
- Regulation of leaving evaporator water (cooling mode) or condenser water (heating mode). Temp. tolerance ±0,1°C.
- Display of compressor working hours and number of compressor starts.
- Re-start in case of power failure (automatic or manual depending on failure type).
- Soft load (optimized management of the compressor load during the start-up).
- Set point reset.
- Master/Slave operation (up to 4 chillers connected).
Controller shall guarantee following minimum alarms signaling:
- Phase loss.
- Evaporator water flow loss.
- Evaporator water freezing protection.
- External alarm.
- Low evaporator refrigerant pressure.
- High refrigerant pressure (transducer).
- High refrigerant pressure (switch).
- Low pressure ratio.
- High refrigerant discharge temperature.
- High oil pressure differential.
- High motor temperature.
High Level Communications Interface (on request) The chiller shall be able to communicate to BMS (Building Management
System) based on the most common protocols such as: - ModbusRTU
- LonWorks
- BacNet BTP certified over IP and MS/TP (class 4) (Native)
- Ethernet TCP/IP.
Master/Slave the unit shall be able to operate in Master / Slave mode in order to be connected with other similar unit (up to
4). The master unit shall manage the slave units connected in series on the hydraulic plant with the aim of optimize the
running hours of each compressor and to balance the load between the units.
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