1. 22-Apr-17
EWAD AJYNN

2. EWAD190-650AJYNN Air Cooled Chiller - Cooling Only 177 kW ÷ 626 kW
Single Screw Compressor

3. TABLE OF CONTENT EWAD-AJYNN range Unit position into the range
Technical solution
Operating Limits
Compressor features
Refrigerant Circuit
DX shell & tube evaporator
Control & remote control
Unit delivery
Options summary
1. Standard options
2. Options on request

4. EWAD-AJYNN Flexibility
A. EWAD-AJYNN RANGE
EWAD-AJYNN Flexibility
Standard unit
3 noise versions available:
OPRN
74,5 ÷ 76,5 dB(A)
OPLN
70 ÷ 73 dB(A)
VERSION /Q
65 ÷ 66 dB(A)
Version /H
1 noise version available:
BASE MODEL
77 ÷ 80,0 dB(A)
Version /A
2 noise versions available:
BASE MODEL
77,5 ÷ 79 dB(A)
+ OPLN
72,5 ÷ 73,5 dB(A)

5. B. UNIT POSITION INTO THE RANGE (1/4)
EWAD-AJYNN: Unit efficiency level
3.30
3.15
3.00
600
EER
2.85
360
440
500
230
280
340
550
2.60
260
200
320
480
400
2.45
300
2.30
2.15
190
2.00
EWAD-AJYNN
150
200
250
300
350
400
450
500
550
600
650
700
750 KW
= with economizer

6. B. UNIT POSITION INTO THE RANGE (1/4)
EWAD-AJYNN: Unit efficiency level
3.30
650
280
340
600
420
3.15
320
500
550
360
260
3.00
380
EER
2.85
240
500
2.60
400
260
210
300
460
2.45
280
440
2.30
320
340
2.15
EWAD-AJYNN/A
2.00
EWAD-AJYNN/Q
150
200
250
300
350
400
450
500
550
600
650
700
750 KW
= with economizer

7. B. UNIT POSITION INTO THE RANGE (1/4)
EWAD-AJYNN: Unit efficiency level
3.30
3.15
400
600
460
500
550
3.00
EER
240
280
480
2.85
420
320
260
2.60
210
300
340
2.45
200
2.30
2.15
2.00
EWAD-AJYNN/H
150
200
250
300
350
400
450
500
550
600
650
700
750 KW
= with economizer

8. B. UNIT POSITION INTO THE RANGE (2/4)
EWAD-AJYNN BASE MODEL / HIGH EFFICIENCY: cooling range
EWAD-AJYNN
2 Compressors
EWAD-AJYNN/Q
2 Compressors
EWAD-AJYNN/A
2 Compressors
EWAD-AJYNN/H
2 Compressors
100
200
300
400
500
600
700
= with economizer
kW Evap. 12/7°C - 35°C OAT

9. B. UNIT POSITION INTO THE RANGE (3/4)
EWAD-AJYNN: sizes distribution
EWAD-AJYNN EWAD-AJYNN+OPRN EWAD-AJYNN+OPLN
400
440
480
500
550
600
190
230
280
320
360
440
500
600
200
260
300
340
480
550
190
230
280
320
360
440
500
600
200
260
300
340
480
550
150
200
250
300
350
400
450
500
550
600
650
700 KW

10. B. UNIT POSITION INTO THE RANGE (3/4)
EWAD-AJYNN: sizes distribution
EWAD-AJYNN/Q EWAD-AJYNN/H
210
260
300
340
400
460
240
280
320
440
500
210
260
300
340
400
460
500
600
200
240
280
320
420
480
550
150
200
250
300
350
400
450
500
550
600
650
700 KW

11. B. UNIT POSITION INTO THE RANGE (3/4)
EWAD-AJYNN: sizes distribution
EWAD-AJYNN/A EWAD-AJYNN/A+OPLN
260
340
380
550
650
280
320
360
420
500
600
280
340
380
420
500
600
650
260
320
360
550
150
200
250
300
350
400
450
500
550
600
650
700 KW

12. C. TECHNICAL SOLUTION (1/3)
EWAD-AJYNN – Base model/OPRN - Technical solution
BASE MODEL - /A
Helicoidal fans (900 RPM) with good acoustic performance and no mechanical vibrations
Compressor antivibration support to avoid transmission on chiller metal base-frame
Rubber round washers to avoid metal to metal contacts which would increase chiller structural noise
EWAD-AJYNN/A 77,5 ÷ 79,0 dB(A)
EWAD-AJYNN 75,0 ÷ 79 dB(A)
ISO m hemispherical field

13. C. TECHNICAL SOLUTION (2/3)
EWAD-AJYNN – OPLN – Technical Solution
OPLN
Helicoidal fans with good acoustic performance and no mechanical vibrations
Compressor antivibration support to avoid transmission on chiller metal base-frame
Rubber round washers to avoid metal to metal contacts which would increase chiller structural noise
70,0 ÷ 73,0 dB(A)
ISO m hemispherical field
Fan speed reduction ( 680 RPM ) to attenuate the noise level of the chiller condensing section
Compressor sound proof cabinet with aluminium frame, metal panels and high density material inside to absorb acoustic waves
Suction muffler

14. C. TECHNICAL SOLUTION (3/3) Enhanced condensing section of the chiller
EWAD-AJYNN – /Q – Technical Solution /Q
Helicoidal fans with good acoustic performance and no mechanical vibrations
Compressor antivibration support to avoid transmission on chiller metal base-frame
Rubber round washers to avoid metal to metal contacts which would increase chiller structural noise
Suction muffler & discharge muffler
65,0 ÷ 66,0 dB(A)
ISO m hemispherical field
Fan speed reduction ( 500 RPM ) to reduce the noise level of the chiller condensing section
Compressor sound proof cabinet with aluminium frame, metal panels and high density material inside to absorb acoustic wave
Enhanced condensing section of the chiller

15. EWAD-AJYNN – Unit Operating Limits (Base model)
D. OPERATING LIMITS (1/3)
EWAD-AJYNN – Unit Operating Limits (Base model)
Envelope of EWAD-AJYNN
-20
-10 10 20 30 40 -5 5 15
Leaving water temperature (°C)
Outside Ambient Temperature (°C)
Check on rating
tables for part load
operation of each unit
OPFS
OPLA

16. EWAD-AJYNN/A – Unit Operating Limits
D. OPERATING LIMITS (2/3)
EWAD-AJYNN/A – Unit Operating Limits
Envelope of EWAD-AJYNN/A
-20
-10 10 20 30 40 50 -5 5 15
Leaving Water Temperature (°C)
Outside Ambient Temperature (°C) C
heck on rating tables
for part load operation
of each unit
Glycol application
OPFS
OPLA

17. EWAD-AJYNN/H – Unit Operating Limits (High Ambient)
D. OPERATING LIMITS (3/3)
EWAD-AJYNN/H – Unit Operating Limits (High Ambient)
Envelopes of EWAD-AJYNN/H
-20
-10 10 20 30 40 50 60 -5 5 15
Leaving Water Temperature (°C)
Outside Ambient Temperature (°C)
Check on rating
tables for part load
operation of each unit
Glycol application
OPFS
OPLA

18. E. COMPRESSOR FEATURES (1/2)
EWAD-AJYNN – Single Screw Compressor
axial balanced loads
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
“ Frame3100 ” single screw compressor
EWAD 190  360 AJYNN
“ Frame3200 ” single screw compressor
discharge
compression
suction
EWAD 380  650 AJYNN

19. E. COMPRESSOR FEATURES (2/2)
EWAD-AJYNN – Single Screw Compressor
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
Six electrical terminals to allow as standard star-delta (Y-D) compressor start. For low inrush current and reduce starting torque
Fully semi-hermetic design to allow ordinary maintenance and to replace easily each component if necessary

20. F. REFRIGERANT CIRCUIT
EWAD-AJYNN – Truly Independent Refrigerant Circuits
EWAD-AJYNN with 2 refrigerant circuits: 2 compressors, 2 expansion valves, 2 condensing sections, 2 evaporating sections in the evaporator’s shell, 2 dry-filters

21. G. DX SHELL AND TUBE EVAPORATOR copper tube internally enhanced
EWAD-AJYNN - DX (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

22. H. CONTROL & REMOTE CONTROL (1/4)
EWAD-AJYNN – Electrical Panel Features
Power and control are located in two different sections.
Main switch: only on OFF position, it allows the access to power section.
Control section opening is possible also when power is ON.

23. H. CONTROL & REMOTE CONTROL (2/4) Motherboard with microprocessors
EWAD-AJYNN – 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

24. H. CONTROL & REMOTE CONTROL (3/4)
EWAD-AJYNN – Microprocessor Control “Microtech II C Plus”
"demand limit" or
"set-point reset"
"current limit"
from external signal
STANDARD
SPN
"set-point reset"
from OAT
"soft load"
High value control functions implemented as standard into the logic

25. H. CONTROL & REMOTE CONTROL (4/4)
EWAD-AJYNN – 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 2.0 (EKPV2J) software;
BMS communication capability via Modbus, BacNet & LonWorks protocol
Remote communication via modem/GSM (up to 8 chillers with Gateway)
Compatibility with Daikin EKCSCII (Chiller Sequencing Control)

26. I. UNIT DELIVERY (1/2) EWAD-AJYNN – 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.
Procedure for extracting machine from the container.
Container Kit Optional

27. I. UNIT DELIVERY (2/2) Daikin – Unit delivery, moving and lifting
2340÷4940
2÷4 units can be loaded on the same truck.

28. EWAD-AJYNN: OPTIONS SUMMARY (1)
Standard options
Brine version
Dual setpoint
Star delta compressor starter
Thermal relays compressors
Under/over voltage controller
Condenser Coils Alucoat
Flow switch for evaporator
Setpoint reset and demand limit
Victaulic on evaporator
Alarm from external device
Rubber type antivibration mounts
Evaporator heater
Main switch
Suction stop valve

29. EWAD-AJYNN: OPTIONS SUMMARY (2)
Options on request
OPSP¹: Single pump
OPTP¹: Twin pump
OPHP²: High ESP single Pump
OPHT²: High ESP twin Pump
OPTR: Total heat recovery
OPPR: Partial heat recovery
OPFS³: Fan silent
OPLA4: Low ambient
OPPF: Power factor 0.9
OPEX: Electronic Expansion valve
OPLN5: Low noise
OPGA Gauges
OPCG Coil guards
OPAL Blank Cu/AI coils
OPSN Cu/Sn coils
OPCU Cu/Cu coils
/Q: extra low noise
/A: high efficiency
/H: high ambiant
Unit types
1 Not available for EWAD-AJYNN/Q
2 Not available for EWAD-AJYNN/Q
3 Offered as standard for EWAD-AJYNN/Q
4 Not available for EWAD-AJYNN/Q and EWAD-AJYNN/H
5 Not available for EWAD-AJYNN/Q and EWAD-AJYNN/H

30. 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.

31. 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”.
ALUCOAT CONDENSER COILS – Fins are protected by a special acrylic paint with a high resistance to corrosion.
EVAPORATOR ELECTRIC HEATER – Electric heater controlled by a thermostat to protect the evaporator from freezing down -28°C ambient temperature.

32. 2. OPTIONS ON REQUEST (1/3)
OPSP: Water circulation pump – The pump is unit mounted. Hydronic kit consists of: one centrifugal pump direct driven, expansion tank, water feed circuit with pressure gauge, safety valve. The pump motor is protected by a circuit breaker installed in control panel. The kit is assembled and wired to the control panel.
OPTP: Two water circulation pumps – The pumps are unit mounted. Hydronic kit consists of: two centrifugal pumps direct driven, expansion tank, water feed circuit with pressure gauge, safety valve, check valves, shut-off valves. The pumps motors are protected by circuit breakers installed in control panel. The kit is assembled and wired to the control panel.
OPTR: 100% Total heat recovery – Produced with shell and tube heat exchangers to produce hot water up to 50÷55° C. The heat exchangers are mounted on the refrigerant circuits parallel to the condenser coils to remove all the condensation heat.

33. 2. OPTIONS ON REQUEST (2/3)
OPPR: Partial heat recovery – Produced with plate-to-plate heat exchangers installed between the compressor discharge and the condenser coil. These allow hot water to be produced up to a maximum temperature of 55°C.
OPFS device: Fan silent – This device allows the continuous variation of the fan speed, modifying the air flow according to the external temperature conditions. It allows the unit working with air temperature down to –5÷–10°C. In addition, a microprocessor clock switches the fan at low speed according to the client setting (i.e. Night & Day).
OPLA: Low ambient – Continuous fan speed modulation on the first fan of each circuit. It allows the unit working with air temperature down to –18°C.
OPPF: Power factor 0.9 – Capacitor power factor correction - Installed on the electrical control panel to ensure it conforms to the plant rules.

34. 2. OPTIONS ON REQUEST (3/3)
OPEX: 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
OPCG: Coil guards – Metal protection guards fixed on all the external surface of the condenser coils.
OPCU – To give better protection against corrosion by aggressive environments.
OPSN (new option) – To give better protection against corrosion in aggressive environments and by salty air.

35. Engineered for flexibility and performance.™
22-Apr-17
Engineered for flexibility and performance.™ 40 10 46