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EWAD 190-650 AJYNN. EWAD 190-650 AJYNN. Air Cooled Chiller - Cooling Only 177 kW ÷ 626 kW Single Screw Compressor. TABLE OF CONTENT. EWAD-AJYNN range Unit position into the range Technical solution Operating Limits Compressor features Refrigerant Circuit DX shell & tube evaporator

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slide2

EWAD190-650AJYNN

Air Cooled Chiller - Cooling Only

177 kW ÷ 626 kW

Single Screw Compressor

table of content
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
slide4

A. EWAD-AJYNN RANGE

EWAD-AJYNN Flexibility

  • Version /H
  • 1 noise version available:
  • BASE MODEL
  • 77 ÷ 80,0 dB(A)
  • 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 /A
  • 2 noise versions available:
  • BASE MODEL
  • 77,5 ÷ 79 dB(A)
  • + OPLN
  • 72,5 ÷ 73,5 dB(A)
slide5

B. UNIT POSITION INTO THE RANGE (1/4)

EWAD-AJYNN: Unit efficiency level

3.30

3.15

3.00

600

EER

2.85

440

500

360

230

550

280

340

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

slide6

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

380

3.00

EER

2.85

240

500

2.60

400

260

210

300

460

280

2.45

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

slide7

B. UNIT POSITION INTO THE RANGE (1/4)

EWAD-AJYNN: Unit efficiency level

3.30

3.15

600

400

460

500

550

3.00

EER

240

280

480

420

2.85

320

260

210

300

340

2.60

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

slide8

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

EWAD-AJYNN/A

2 Compressors

EWAD-AJYNN/H

2 Compressors

100

200

300

400

500

600

700

= with economizer

kW cooling @ Evap. 12/7°C - 35°C OAT

slide9

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

slide10

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

280

320

420

480

200

240

550

150

200

250

300

350

400

450

500

550

600

650

700

KW

slide11

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

slide12

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 hemispherical field

slide13

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

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

slide14

C. TECHNICAL SOLUTION (3/3)

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 3744 - @ 1m 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

slide15

Envelope of EWAD-AJYNN

40

30

20

Outside Ambient Temperature (°C)

10

0

-10

-20

-10

-5

0

5

10

15

20

Leaving water temperature (°C)

D. OPERATING LIMITS (1/3)

EWAD-AJYNN – Unit Operating Limits (Base model)

Check on rating

tables for part load

operation of each unit

OPFS

OPLA

slide16

Envelope of EWAD-AJYNN/A

50

40

30

20

Outside Ambient Temperature (°C)

10

0

-10

-20

-10

-5

0

5

10

15

20

Leaving Water Temperature (°C)

D. OPERATING LIMITS (2/3)

EWAD-AJYNN/A – Unit Operating Limits

C

heck on rating tables

for part load operation

of each unit

Glycol application

OPFS

OPLA

slide17

Envelopes of EWAD-AJYNN/H

60

50

40

30

Outside Ambient Temperature (°C)

20

10

0

-10

-20

-10

-5

0

5

10

15

20

Leaving Water Temperature (°C)

D. OPERATING LIMITS (3/3)

EWAD-AJYNN/H – Unit Operating Limits (High Ambient)

Check on rating

tables for part load

operation of each unit

Glycol application

OPFS

OPLA

slide18

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

compression

suction

discharge

EWAD 380  650 AJYNN

slide19

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

slide20

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

slide21

G. DX SHELL AND TUBE EVAPORATOR

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
slide22

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.
slide23

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
slide24

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"

"soft load"

from OAT

  • High value control functions implemented as standard into the logic
slide25

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)
slide26

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

slide27

I. UNIT DELIVERY (2/2)

Daikin – Unit delivery, moving and lifting

2340÷4940

  • 2÷4 units can be loaded on the same truck.
ewad ajynn options summary 1
EWAD-AJYNN: OPTIONS SUMMARY (1)
  • Victaulic on evaporator
  • Alarm from external device
  • Rubber type antivibration mounts
  • Evaporator heater
  • Main switch
  • Suction stop valve

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
ewad ajynn options summary 2
OPLN5: Low noise

OPGA Gauges

OPCG Coil guards

OPAL Blank Cu/AI coils

OPSN Cu/Sn coils

OPCU Cu/Cu coils

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
  • /Q: extra low noise
  • /A: high efficiency
  • /H: high ambiant

Unit types

1 Not available for EWAD-AJYNN/Q

2Not 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 forEWAD-AJYNN/Q and EWAD-AJYNN/H

1 options as standard 1 2
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.

slide31

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.

slide32

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.

slide33

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.

slide34

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.