EWWD340-C19CJYNN
Jan 13, 2016
EWWD340-C19CJYNN
2Apr 21, 2023
Water Cooled Chiller
334 kW ÷ 1893 kW
Single Screw Compressor
EWWD340-C19CJYNN
3Apr 21, 2023
TABLE OF CONTENT
A. 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. Options summary
1. Standard options
2. Options on request
4Apr 21, 2023
EWWD-CJYNN: unit efficiency level
C19
C18
C17C16
C15
C14
C13
C12
C11
C10
950
900
800
750
700
550
480
400
340
4.00
4.10
4.20
4.30
4.40
4.50
4.60
4.70
0 200 400 600 800 1000 1200 1400 1600 1800 2000
kW
EE
R
A. UNIT POSITION INTO THE RANGE (1/3)
5Apr 21, 2023
EWWD-CJYNN: cooling range
0 500 1000 15002000
kW cooling @ Evap. 12/7°C - Cond. 30/35°C
4 Compressors2 Compressors 3 Compressors 1 Compressor
A. UNIT POSITION INTO THE RANGE (2/3)
6Apr 21, 2023
EWWD-CJYNN: sizes distribution
334 462 666 792 934 1074 1205 1331 1525 1629 1761 1893
139412681139871735510399
0 200 400 600 800 1000 1200 1400 1600 1800 2000 2200
kW
A. UNIT POSITION INTO THE RANGE (3/3)
7Apr 21, 2023
B. OPERATING LIMITS
Max evaporator leaving water temperature °C 15Min evaporator leaving water temperature (without glycol) °C 4Min evaporator leaving water temperature (with glycol) °C -8Min evaporator water DT °C 4Max evaporator water DT °C 8Min DT between leaving water evaporator and leav. water condenser °C 16Max DT between leaving water evaporator and leav. water condenser °C 48Min condenser entering water temperature °C 15Max condenser leaving water temperature °C 55Min condenser water DT (1 pass, 2 passes - DT 4÷8 °C) °C 4Max condenser water DT (1 pass, 2 passes - DT 4÷8 °C) °C 8Min condenser water DT (2 passes - DT 8÷15 °C) °C 8Max condenser water DT (2 passes - DT 8÷15 °C) °C 15
8Apr 21, 2023
EWWD-CJYNN – Single Screw Compressor
“ Frame4 ” single screw compressor
axial balanced loads
radial balanced loads
2 specular compression cycles
infinitely variable cooling capacity control
external 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-CJYNN – Single Screw Compressor
“ Frame4 ”
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-CJYNN – Single Screw Compressor
“ Frame4 ”
Six electrical terminals to allow as standard a star-delta (Y-D) compressor start
External high efficiency (98%) oil separator.
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 CIRCUITS
WL1ST1
EVAPORATOR
WL2ST2
DRIER FILTER
OIL SEPARATOR
WH3
CONDENSER
WATER OUT
WATER INLET
EX8ELECTRONICEXP. VALVE
COMPRESSOR
EX8ELECTRONICEXP. VALVE
EX8ELECTRONICEXP. VALVE
EVAPORATORHEATER
WATERINLET
WATEROUTLET
Y5
Y6
WO1
EWWD-CJYNN with 3 refrigerant circuits: 3 compressors, 3 expansion valves, 3 condensers, 3 evaporating sections in the evaporator’s shell, 3 dry-filters
12Apr 21, 2023
E. Dry-eXpansion shell & tube evaporator
1) 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-CJYNN – 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 & REMOTE CONTROL (1/4)
14Apr 21, 2023
EWWD-CJYNN – 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 & REMOTE CONTROL (2/4)
15Apr 21, 2023
EWWD-CJYNN – Microprocessor Control “Microtech II C Plus”
High value control functions implemented as standard into the logic
F. CONTROL & REMOTE CONTROL (3/4)
SPN
STANDARD
16Apr 21, 2023
EWWD-CJYNN – Microprocessor Control “Microtech II C Plus”F. CONTROL & REMOTE CONTROL (4/4)
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)
17Apr 21, 2023
EWWD-CJYNN – 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
EWWD-CJYNN: OPTIONS SUMMARY
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
Available options OPPF: Power factor 0.9
OP12: Suction stop valve
OP57: A/V meter
OPSS: Soft starter
OPNI: Cu/Ni heat exchanger
OPTR: Heat Recovery
OPPR: Partial Heat Recovery
19Apr 21, 2023
1. OPTIONS AS STANDARD (1/2)
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.
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.
UNDER/OVER VOLTAGE CONTROLLER – Phase monitor to control the minimum
and maximum voltage value that the user can set.
20Apr 21, 2023
1. OPTIONS AS STANDARD (2/2)
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.
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).
OP12: Suction line shut off valve – Suction shut-off valve installed on the suction port of the compressor to facilitate maintenance operation.
OPPF: Capacitor power factor correction - Installed on the electrical control panel to ensure it conforms to the plant rules (Daikin advises maximum 0,9).
22Apr 21, 2023
OP57: Ammeter and voltmeter – Digital meters of unit drawn amperes and voltage values, installed on the electrical control panel.
OPTR: 100% total heat recovery – Produced with tube bundle placed in a single shell with the water condensers heads are 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