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EWWD170-600DJYNN
2Apr 21, 2023
Water Cooled Chiller
166 kW ÷ 604 kW
Single Screw Compressor
EWWD170-600DJYNN
3Apr 21, 2023
TABLE OF CONTENTA. Unit position into the range
B. Operating Limits
C. Compressor features
D. Refrigerant Circuit
E. Dry-eXpansion shell & tube evaporator
F. Control & remote control
G. Unit delivery
H. EWWD-DJYNN Options Summary
1. Standard options
2. Options on request
4Apr 21, 2023
EWWD-DJYNN: unit efficiency level
600
500
460
420380
320
300
260
210170
650
550500
460400
380
320
280230
190
3.50
3.70
3.90
4.10
4.30
4.50
4.70
4.90
100 200 300 400 500 600 700
kW
EE
R
EWWD-DJYNN EWWD-DJYNN/A
A. UNIT POSITION INTO THE RANGE (1/3)
5Apr 21, 2023
EWWD-DJYNN: cooling range
100 200 300 400 500 600 700
EWWDDJYNN
EWWDDJYNN/A
kW cooling @ Evap. 12/7°C - Cond. 30/35°C
1 Compressor 2 Compressors
1 Compressor 2 Compressors
A. UNIT POSITION INTO THE RANGE (2/3)
6Apr 21, 2023
EWWD-DJYNN: sizes distribution
555.7493.7448.3402.5372.2333.9280.4252.8201.2165.5
603.9540.5496443.6408.2366.3306.7276.5223.3186.4
100 200 300 400 500 600 700
kW
EWWD-DJYNNEWWD-DJYNN/A
A. UNIT POSITION INTO THE RANGE (3/3)
7Apr 21, 2023
B. OPERATING LIMITS
Note: Glycol is necessary for evaporator leaving water temperatures below +3°C
Operating range EWWD-DJYNN
20
25
30
35
40
45
50
55
-10 -8 -6 -4 -2 0 2 4 6 8 10 12 14 16 18
Evaporator leaving temperature - °C
Co
nd
en
se
r le
av
ing
te
mp
era
ture
- °
C
8Apr 21, 2023
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
suctioncompressiondischarge
C. COMPRESSOR FEATURES (1/3)
9Apr 21, 2023
EWWD-DJYNN – Single Screw Compressor
“ Compressor ”radial balancing
axial balancing
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
better chilled water stability
C. COMPRESSOR FEATURES (2/3)
10Apr 21, 2023
EWWD-DJYNN – Single Screw Compressor
“ Frame 3200 ”
Six electrical terminals to allow as standard a star-delta (Y-D) compressor start
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.
Fully semi-hermetic design to allow ordinary maintenance and to replace easily each component if necessary
C. COMPRESSOR FEATURES (3/3)
11Apr 21, 2023
D. REFRIGERANT CIRCUIT
EWWD-DJYNN single compressor circuit
12Apr 21, 2023
E. Dry-eXpansion shell & tube evaporator
1) One pass configuration on refrigerant side (R-134a)
Better oil circulation and compressor oil return at part load operation
2) 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
copper tube internally enhanced
13Apr 21, 2023
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.
F. CONTROL AND REMOTE CONTROL (1/4)
14Apr 21, 2023
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
F. CONTROL AND REMOTE CONTROL (2/4)
15Apr 21, 2023
EWWD-DJYNN – Microprocessor Control “Microtech II C Plus”
High value control functions implemented as standard into the logic
F. CONTROL AND REMOTE CONTROL (3/4)
STANDARD
SPN
16Apr 21, 2023
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)
F. CONTROL AND REMOTE CONTROL (4/4)
17Apr 21, 2023
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.
G. UNIT DELIVERY
18Apr 21, 2023
H. EWWD-DJYNN:
Standard options 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
19Apr 21, 2023
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.
20Apr 21, 2023
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.
1. OPTIONS AS STANDARD (2/2)
21Apr 21, 2023
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.
22Apr 21, 2023
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
2. OPTIONS ON REQUEST (2/2)
23Apr 21, 2023