1. 22-Apr-17
EWWD DJYNN

2. EWWD170-600DJYNN Water Cooled Chiller 166 kW ÷ 604 kW
Single Screw Compressor

3. TABLE OF CONTENT Unit position into the range Operating Limits
Compressor features
Refrigerant Circuit
Dry-eXpansion shell & tube evaporator
Control & remote control
Unit delivery
EWWD-DJYNN Options Summary
Standard options
Options on request

4. A. UNIT POSITION INTO THE RANGE (1/3)
EWWD-DJYNN: unit efficiency level
4.90
500
550
190
400
280
460
4.70
230
380
4.50
650
320
4.30
EER
4.10
380
210
320
420
170
260
460
3.90
500
300
600
3.70
EWWD-DJYNN
EWWD-DJYNN/A
3.50
100
200
300
400
500
600
700 kW

5. A. UNIT POSITION INTO THE RANGE (2/3)
EWWD-DJYNN: cooling range
EWWD
DJYNN/A
1 Compressor
2 Compressors
EWWD
DJYNN
1 Compressor
2 Compressors
100
200
300
400
500
600
700
kW Evap. 12/7°C - Cond. 30/35°C

6. A. UNIT POSITION INTO THE RANGE (3/3)
EWWD-DJYNN: sizes distribution
555.7
493.7
448.3
402.5
372.2
333.9
280.4
252.8
201.2
165.5
603.9
540.5
496
443.6
408.2
366.3
306.7
276.5
223.3
186.4
100
200
300
400
500
600
700 kW
EWWD-DJYNN
EWWD-DJYNN/A

7. B. OPERATING LIMITS
Operating range EWWD-DJYNN 20 25 30 35 40 45 50 55
-10 -8 -6 -4 -2 2 4 6 8 10 12 14 16 18
Evaporator leaving temperature - °C
Condenser leaving temperature - °C
Note: Glycol is necessary for evaporator leaving water temperatures below +3°C

8. C. COMPRESSOR FEATURES (1/3) “ Frame3200 ” single screw compressor
EWWD-DJYNN – Single Screw Compressor
“ Frame3200 ” single screw compressor
axial balanced loads
radial balanced loads
2 specular compression cycles
infinitely variable cooling capacity control
integrated oil separator
direct driven screw (no gear)
6 electrical terminals for Y-D as standard
fully semi-hermetic design
composite material on gate rotors
discharge
compression
suction

9. C. COMPRESSOR FEATURES (2/3)
EWWD-DJYNN – Single Screw Compressor
radial balancing
axial balancing
“ Compressor ”
better chilled water stability
Composite material (carbon base composition) to improve compressor reliability and energy performances
Stepless slide valve (oil controlled) to change compressor capacity to match exactly the plant thermal request

10. C. COMPRESSOR FEATURES (3/3)
EWWD-DJYNN – Single Screw Compressor
The integral oil separator is bolted to the rear of the main casing. The impingement type separator is fitted with a knitted stainless steel mesh element.
“ Frame 3200 ”
Fully semi-hermetic design to allow ordinary maintenance and to replace easily each component if necessary
Six electrical terminals to allow as standard a star-delta (Y-D) compressor start

11. D. REFRIGERANT CIRCUIT
EWWD-DJYNN single compressor circuit

12. copper tube internally enhanced
E. Dry-eXpansion shell & tube evaporator
copper tube internally enhanced
One pass configuration on refrigerant side (R-134a)
Better oil circulation and compressor oil return at part load operation
Higher water volume content (Vs PHE Plate Heat Exchanger)
More thermal inertia for the chiller
Smaller external water tank installation (when required)
No freezing risk at any chiller load
No “water hammer” phenomena damage

13. EWWD-DJYNN – Electrical Panel Features
F. CONTROL AND REMOTE CONTROL (1/4)
EWWD-DJYNN – Electrical Panel Features
Main switch: only on OFF position, it allows the access inside the panel.
Control keypad and display are located outside on the front door.

14. Motherboard with microprocessors
F. CONTROL AND REMOTE CONTROL (2/4)
EWWD-DJYNN – Microprocessor Control “Microtech II C Plus”
Motherboard with microprocessors
Unit Controller fully programmed and engineered by Daikin on Carel hardware
P.I.D. logic (proportional, integrative, derivative)
Compressor regulated according leaving evaporator water temperature (LEWT) to match customer set-point within ± 0.2°C
Easy visual interface with 4 rows and 20 characters display and 15 keypad

15. EWWD-DJYNN – Microprocessor Control “Microtech II C Plus”
F. CONTROL AND REMOTE CONTROL (3/4)
EWWD-DJYNN – Microprocessor Control “Microtech II C Plus”
STANDARD
"set-point reset"
"demand limit" or
from external signal
"current limit"
SPN
"soft load"
High value control functions implemented as standard into the logic

16. EWWD-DJYNN – Microprocessor Control “Microtech II C Plus”
F. CONTROL AND REMOTE CONTROL (4/4)
EWWD-DJYNN – Microprocessor Control “Microtech II C Plus”
Easy integration into building automation systems via separate digital connection for unit start/stop and 4-20 mA signals for chilled water reset and demand limiting;
Communications capabilities for remote monitoring, changing of setpoint, trend logging, alarm and event detection, via a compatible IBM-PC with PlantVisor 1.0 software;
BMS communication capability via Modbus, BacNet & LonWorks protocol
Remote communication via modem/GSM (up to 8 chillers with Gateway)
Compatibility with Daikin CSC II (Chiller Sequencing Control)

17. EWWD-DJYNN – Unit delivery, moving and lifting
G. UNIT DELIVERY
EWWD-DJYNN – Unit delivery, moving and lifting
Unit is delivered EXW (Ex works);
Each unit is tested at full load before shipping;
Unit handling must be according to IOM manual.

18. H. EWWD-DJYNN: Standard options Available options Unit Types
Heatpump version
Brine version
Dual setpoint
Thermal relays compressors
Under/over voltage controller
Victaulic on condenser & evaporator
Flow switch for evaporator
Setpoint reset and demand limit
Alarm from external device
Rubber type antivibration mounts
Main switch
Electronic expansion valve
Suction stop valve
Available options
OPPF: Power factor 0.9
OP57: A/V meter
OPSS: Soft starter
OPNI: Cu/Ni heat exchanger
OPLN: Low noise version
OPPR: Partial Heat Recovery
OPTR: Heat Recovery
Unit Types
/A: High Efficiency

19. 1. OPTIONS AS STANDARD (1/2)
SUCTION LINE SHUT OFF VALVE – Suction shut-off valve
installed on the suction port of the compressor to facilitate
maintenance operation.
ALARM FROM EXTERNAL DEVICE – Microprocessor is able to receive an alarm signal from an external device (pump etc…). User can decide if this alarm signal will stop or not the unit.
FLOW SWITCH – Supplied separately to be wired and installed on the evaporator water piping (by others).
COMPRESSOR THERMAL OVER RELAYS – Safety devices against compressor motor overloading in addition to the normal protection envisaged by the electrical windings.

20. 1. OPTIONS AS STANDARD (2/2)
UNDER/OVER VOLTAGE CONTROLLER – Phase monitor to control the minimum and maximum voltage value that the user can set.
RUBBER TYPE ANTIVIBRATION MOUNTS – Supplied separately, these are positionned under the base of the unit for “floor installation”.
ELECTRONIC EXPANSION VALVE– It proposes features that makes it unique: short openning and closing time, high resolution, positive shut-off function to eliminate use of additional solenoid valve, highly linear flow capacity, continous modulation of mass flow without stress in the refrigerant circuit and corrosion resistance stainless steel body.

21. 2. OPTIONS ON REQUEST (1/2)
OPSS: Soft start - Electronic starting device to reduce starting current. An overload protection is included (no need of compressors thermal relays).
OPLN: Sound proof cabinet - Made of sheet metal and internally insulated, the sound proof cabinet is around the compressor/s reach the best performance in noise reduction.
OPPF: Capacitor power factor correction - Installed on the electrical control panel to ensure it conforms to the plant rules (Daikin advises maximum 0,9).
OP57: Ammeter and voltmeter - Digital meters of unit drawn amperes and voltage values, installed on the electrical control panel.

22. 2. OPTIONS ON REQUEST (2/2)
OPTR: 100% total heat recovery – Produced with tube bundle placed in a single shell with the water condensers heads provided with 2 connections for entering/leaving heat recovery water and 2 separate connections for condensing water.
OPPR: Partial heat recovery – Produced with plate to plate heat exchangers installed on discharge side of compressor gas. These allow hot water to be produced up to a maximum temperature of +50°C

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