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EWAD190-650AJYNN
EWAD190-650AJYNN
Air Cooled Chiller - Cooling Only
177 kW ÷ 626 kW
Single Screw Compressor
18-Jul-15
2
TABLE OF CONTENT
A. EWAD-AJYNN range
B. Unit position into the range
C. Technical solution
D. Operating Limits
E. Compressor features
F. Refrigerant Circuit
G. DX shell & tube evaporator
H. Control & remote control
I. Unit delivery
J. Options summary
1. Standard options
2. Options on request
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A. EWAD-AJYNN RANGE
EWAD-AJYNN Flexibility
Version /H
Standard unit
1 noise version available:
3 noise versions available:
Version /A
OPRN
74,5 ÷ 76,5 dB(A)
2 noise versions available:
OPLN
70 ÷ 73 dB(A)
BASE MODEL
77,5 ÷ 79 dB(A)
VERSION /Q
65 ÷ 66 dB(A)
 + OPLN
72,5 ÷ 73,5 dB(A)
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BASE MODEL
77 ÷ 80,0 dB(A)
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B. UNIT POSITION INTO THE RANGE (1/4)
EWAD-AJYNN: Unit efficiency level
3.30
3.15
EER
3.00
600
2.85
2.60
200
440
360
230
280
260
2.45
500
550
340
320
300
480
400
2.30
190
2.15
2.00
EWAD-AJYNN
150
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200
250
300
350
400
450
500
KW
550
600
650
700
750
= with economizer
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B. UNIT POSITION INTO THE RANGE (1/4)
EWAD-AJYNN: Unit efficiency level
3.30
280
340
420
320
3.15
500
360
260
3.00
EER
600
2.85
210
500
260
400
300
460
280
2.45
550
380
240
2.60
650
440
320
2.30
340
2.15
EWAD-AJYNN/A
2.00
EWAD-AJYNN/Q
150
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200
250
300
350
400
450
500
KW
550
600
650
700
750
= with economizer
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B. UNIT POSITION INTO THE RANGE (1/4)
EWAD-AJYNN: Unit efficiency level
3.30
3.15
400
3.00
EER
240
280
2.85
210
2.60
300
500 550
600
480
420
320
260
460
340
200
2.45
2.30
2.15
2.00
EWAD-AJYNN/H
150
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200
250
300
350
400
450
500
KW
550
600
650
700
750
= with economizer
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B. UNIT POSITION INTO THE RANGE (2/4)
EWAD-AJYNN BASE MODEL / HIGH EFFICIENCY: cooling range
2 Compressors
EWAD-AJYNN
EWAD-AJYNN/Q
2 Compressors
2 Compressors
EWAD-AJYNN/A
2 Compressors
EWAD-AJYNN/H
100
= with economizer
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200
300
400
500
600
700
kW cooling @ Evap. 12/7°C - 35°C OAT
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B. UNIT POSITION INTO THE RANGE (3/4)
EWAD-AJYNN: sizes distribution
EWAD-AJYNN
EWAD-AJYNN+OPRN
400
190
230
200
190
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260
230
200
150
280
200
320
300
280
260
250
360
300
480 500
440
340
320
300
440
EWAD-AJYNN+OPLN
500
480
360
440
340
350
450
KW
600
600
550
500
480
400
550
500
600
550
550
600
650
700
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B. UNIT POSITION INTO THE RANGE (3/4)
EWAD-AJYNN: sizes distribution
EWAD-AJYNN/Q
210
260
240
210
150
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300
280
260
200
240
200
250
340
EWAD-AJYNN/H
400
460
320
300
280
300
440
340
320
400
500
460
420
350
400
500
480
450
KW
500
600
550
550
600
650
700
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B. UNIT POSITION INTO THE RANGE (3/4)
EWAD-AJYNN: sizes distribution
EWAD-AJYNN/A
260
340
280
320
280
260
150
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200
250
EWAD-AJYNN/A+OPLN
380
360
340
320
300
550
420
500
380 420
500
360
350
650
600
600
650
600
650
550
400
450
KW
500
550
700
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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 3744 - @ 1m
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hemispherical field
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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 3744 - @ 1m
hemispherical field
Suction muffler
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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
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C. TECHNICAL SOLUTION (3/3)
/Q
EWAD-AJYNN – /Q – Technical Solution
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
65,0 ÷ 66,0 dB(A)
Suction muffler & discharge muffler
ISO 3744 - @ 1m
hemispherical field
Fan speed reduction ( 500 RPM ) to
reduce the noise level of the chiller
condensing section
Enhanced condensing
section of the chiller
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Compressor sound proof cabinet with
aluminium frame, metal panels and high
density material inside to absorb acoustic
wave
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D. OPERATING LIMITS (1/3)
EWAD-AJYNN – Unit Operating Limits (Base model)
Outside Ambient Temperature (°C)
Envelope of EWAD-AJYNN
Check on rating
tables for part load
operation of each unit
40
30
20
10
0
OPFS
-10
OPLA
-20
-10
-5
0
5
10
15
20
Leaving water temperature (°C)
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D. OPERATING LIMITS (2/3)
EWAD-AJYNN/A – Unit Operating Limits
50
Check on rating tables
for part load operation
of each unit
40
30
20
10
0
Glycol application
Outside Ambient Temperature (°C)
Envelope of EWAD-AJYNN/A
OPFS
-10
-20
-10
OPLA
-5
0
5
10
15
20
Leaving Water Temperature (°C)
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D. OPERATING LIMITS (3/3)
EWAD-AJYNN/H – Unit Operating Limits (High Ambient)
60
Check on rating
tables for part load
operation of each unit
50
40
30
Glycol application
Outside Ambient Temperature (°C)
Envelopes of EWAD-AJYNN/H
20
10
0
OPFS
OPLA
-10
-20
-10
-5
0
5
10
15
20
Leaving Water Temperature (°C)
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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
“ Frame3100 ” single
screw compressor
 fully semi-hermetic design
EWAD 190  360 AJYNN
discharge
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compression
suction
 composite material on gate rotors
“ Frame3200 ” single
screw compressor
EWAD 380  650 AJYNN
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E. COMPRESSOR FEATURES (2/2)
EWAD-AJYNN – Single Screw Compressor
Composite material (carbon
base composition) to improve
compressor reliability and
energy performances
Six electrical terminals to allow as standard
star-delta (Y-D) compressor start. For low
inrush current and reduce starting torque
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Stepless slide valve (oil
controlled) to change compressor
capacity to match exactly the
plant thermal request
Fully semi-hermetic design to allow
ordinary maintenance and to replace
easily each component if necessary
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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 dryfilters
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G. DX SHELL AND TUBE EVAPORATOR
EWAD-AJYNN - DX (Dry-eXpansion) shell & tube evaporator
1) One pass configuration on refrigerant side (R-134a)
copper tube internally
enhanced
 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
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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.
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H. CONTROL & REMOTE CONTROL (2/4)
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
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H. CONTROL & REMOTE CONTROL (3/4)
EWAD-AJYNN – Microprocessor Control “Microtech II C Plus”
STANDARD
SPN
 High value control functions implemented as standard into the logic
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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)
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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.
240
0
Procedure for
extracting machine
from the container.
2355
00
40
Container Kit
Optional
223
4
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L
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I. UNIT DELIVERY (2/2)
Daikin – Unit delivery, moving and lifting
 2÷4 units can be loaded on the same truck.
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EWAD-AJYNN: OPTIONS SUMMARY (1)
Standard options
 Brine version
 Victaulic on evaporator
 Dual setpoint
 Alarm from external device
 Star delta compressor starter
 Rubber type antivibration mounts
 Thermal relays compressors
 Evaporator heater
 Under/over voltage controller
 Main switch
 Condenser Coils Alucoat
 Suction stop valve
 Flow switch for evaporator
 Setpoint reset and demand limit
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EWAD-AJYNN: OPTIONS SUMMARY (2)
Options on request
 OPLN5: Low noise
 OPSP¹: Single pump
 OPGA Gauges
 OPTP¹: Twin pump
 OPCG Coil guards
 OPHP²: High ESP single Pump
 OPAL Blank Cu/AI coils
 OPHT²: High ESP twin Pump
 OPSN Cu/Sn coils
 OPTR: Total heat recovery
 OPCU Cu/Cu coils
 OPPR: Partial heat recovery
 OPFS³: Fan silent
Unit types
 OPLA4: Low ambient
 OPPF: Power factor 0.9
 OPEX: Electronic Expansion valve
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 /Q: extra low noise
 /A: high efficiency
 /H: high ambiant
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
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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.
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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.
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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.
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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.
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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.
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Engineered for flexibility and performance.™
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