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EWAP 800-C18 AJYNN. EWAP 800-C18 AJYNN. Air Cooled Chiller - Cooling Only 744 kW ÷ 1730 kW Single Screw Compressor. TABLE OF CONTENT. EWAP-AJYNN range Unit position into the range Technical solution Operating Limits Compressor features Refrigerant Circuit DX shell & tube evaporator

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slide2

EWAP800-C18AJYNN

Air Cooled Chiller - Cooling Only

744 kW ÷ 1730 kW

Single Screw Compressor

table of content
TABLE OF CONTENT
  • EWAP-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

B. UNIT POSITION INTO THE RANGE (1/5)

EWAP-AJYNN– Unit efficiency level

2.80

900

2.70

C10

C13

C14

C12

C11

C16

850

C15

950

2.60

C18

C17

2.50

EER

2.40

C13

900

C14

C15

C16

950

C17

800

C10

C18

C12

C11

2.30

2.20

EWAP-AJYNN

EWAP-AJYNN/A

2.10

500

600

700

800

900

1000

1100

1200

1300

1400

1500

1600

1700

1800

1900

2000

kW

slide5

B. UNIT POSITION INTO THE RANGE (2/5)

EWAP-AJYNN: cooling range

EWAP-

AJYNN

2 compressors

3 compressors

EWAP-

AJYNN +OPRN

2 compressors

3 compressors

EWAP-

AJYNN

+ OPLN

3 compressors

2 compressors

500

600

700

800

900

1000

1100

1200

1300

1400

1500

1600

1700

1800

1900

2000

kW cooling @ Evap. 12/7°C - 35°C OAT

slide6

B. UNIT POSITION INTO THE RANGE (3/5)

EWAP-AJYNN/A: cooling range

EWAP-

AJYNN

/A

2 compressors

3 compressors

EWAP-

AJYNN/A+OPRN

3 compressors

2 compressors

EWAP-

AJYNN/A

+ OPLN

3 compressors

2 compressors

500

600

700

800

900

1000

1100

1200

1300

1400

1500

1600

1700

1800

1900

2000

kW cooling @ Evap. 12/7°C - 35°C OAT

slide7

B. UNIT POSITION INTO THE RANGE (4/5)

EWAP-AJYNN: sizes distribution

943

1284

1426

790

1091

1583

1026

1158

1353

1516

1650

875

822

963

1092

1271

1422

1547

744

887

1025

1205

1346

1484

744

1205

1484

887

1025

1346

963

1092

1271

1422

1547

822

EWAP-AJYNN

EWAP-AJYNN+OPRN

EWAP-AJYNN+OPLN

500

600

700

800

900

1000

1100

1200

1300

1400

1500

1600

1700

1800

1900

2000

kW cooling @ Evap 12/7°C - 35°C OAT

slide8

B. UNIT POSITION INTO THE RANGE (5/5)

EWAP-AJYNN/A: sizes distribution

854

1027

1195

1357

1497

1644

1252

1427

1123

1594

1729

954

818

981

1137

1300

1423

1586

911

1069

1202

1365

1522

1649

1069

1202

1365

1522

1649

911

981

1137

1300

818

1423

1586

EWAP-AJYNN/A

EWAP-AJYNN/A+OPRN

EWAP-AJYNN/A+OPLN

500

600

700

800

900

1000

1100

1200

1300

1400

1500

1600

1700

1800

1900

2000

kW cooling @ Evap 12/7°C - 35°C OAT

slide9

C. TECHNICAL SOLUTION (1/4)

EWAP-AJYNN version – Technical Solution

Helicoidal fans (860 RPM) with good acoustic performance and no mechanical vibrations

EWAP-AJYNN

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

80,5 ÷ 81,5 dB(A)

ISO 3744 - @ 1m

hemispherical field

slide10

C. TECHNICAL SOLUTION (2/4)

EWAP-AJYNN + OPRN version – Technical Solution

EWAP-AJYNN + OPRN

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

75 ÷ 77 dB(A)

ISO 3744 - @ 1m

hemispherical field

Discharge flexible pipe to avoid vibrations in the condensing section of the chiller due to the gas pulsations and compressor vibrations

Fan speed reduction ( 680 RPM) to reduce the noise level of the chiller condensing section

slide11

C. TECHNICAL SOLUTION (3/4)

EWAP-AJYNN + OPLN version – Technical Solution

EWAP-AJYNN +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

72.5 ÷ 73.5 dB(A)

ISO 3744 - @ 1m

hemispherical field

Discharge flexible pipe to avoid vibrations in the condensing section of the chiller due to the gas pulsations and compressor vibrations

Compressor sound proof cabinet with aluminium frame, metal panels and high density material inside to absorb acoustic waves

Fan speed reduction ( 680 RPM) to reduce the noise level of the chiller condensing section

slide12

D. OPERATING LIMITS (1/2)

EWAP-AJYNN Unit Operating Limits

OPRN

OPLN

Unit version

EWAP-AJYNN

°C

42

38

38

Max ambient temperature (at full load)

°C

+10 (2)

+10 (2)

+10 (2)

Min ambient temperature

°C

10

10

10

Max leaving evaporator water temperature

°C

4

4

4

Min leaving evap. water temp. (without glycol)

°C

-8

-8

-8

Min leaving evap. water temp. (with glycol)

D

Max evaporator

T

°C

6

6

6

D

Min evaporator

T

°C

4

4

4

Notes:

When air temperature is lower than +10°c you need the fan speed control device. It allows the unit working with air temperature down to -10°c. OPLA allows to reach -18°c.

(1)

slide13

D. OPERATING LIMITS (2/2)

EWAP-AJYNN/A – Unit Operating Limits

Unit version

/A+OPRN

/A+OPLN

EWAP-AJYNN/A

°C

46

42

42

Max ambient temperature (at full load)

°C

+10 (2)

+10 (2)

+10 (2)

Min ambient temperature

°C

10

10

10

Max leaving evaporator water temperature

°C

4

4

4

Min leaving evap. water temp. (without glycol)

°C

-8

-8

-8

Min leaving evap. water temp. (with glycol)

D

Max evaporator

T

°C

6

6

6

D

Min evaporator

T

°C

4

4

4

Notes:

When air temperature is lower than +10°c you need the fan speed control device. It allows the unit working with air temperature down to -10°c. OPLA allows to reach -18°c

(1)

slide14

E. COMPRESSOR FEATURES (1/3)

EWAP-AJYNN – 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

compression

suction

discharge

slide15

E. COMPRESSOR FEATURES (2/3)

EWAP-AJYNN – Single Screw Compressor

“ Frame4 ”

radial balancing

axial balancing

better chilled water stability

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

slide16

E. COMPRESSOR FEATURES (3/3)

EWAP-AJYNN – Single Screw Compressor

External high efficiency oil separator mounted on the same compressor metal base frame

“ Frame4 ”

Fully semi-hermetic design to allow ordinary maintenance and to replace easily each component if necessary

Six electrical terminals to allow as standard a star-delta (Y-D) compressor start.

slide17

E. REFRIGERANT CIRCUITS

EWAP-AJYNN – Truly Independent Refrigerant Circuits

EWAP-AJYNN with 3 refrigerant circuits: 3 compressors, 3 expansion valves, 3 condensing sections, 3 evaporating sections in the evaporator’s shell, 3 dry-filters

slide18

E. DRY-EXPANSION SHELL AND TUBE

EWAP-AJYNN - DX (Dry-eXpansion) shell & tube evaporator

copper tube internally enhanced

  • One pass configuration on refrigerant side (R-407c)
    • 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
slide19

F. CONTROL & REMOTE CONTROL (1/4)

EWAP-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.
slide20

F. CONTROL & REMOTE CONTROL (2/4)

EWAP-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 with 4 rows and 20 characters display and 15 keypad
slide21

F. CONTROL & REMOTE CONTROL (3/4)

EWAP-AJYNN – Microprocessor Control “Microtech II C Plus”

"demand limit" or

"set-point reset"

"current limit"

from external signal

SPN

STANDARD

"set-point reset"

"soft load"

from OAT

  • High value control functions implemented as standard into the logic
slide22

F. CONTROL & REMOTE CONTROL (4/4)

EWAP-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 SequencingControl)
slide23

I. UNIT DELIVERY (1/2)

EWAP-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.
slide24

I. UNIT DELIVERY (2/2)

EWAP-AJYNN – Unit delivery, moving and lifting

Up to 14570 mm

  • EWAP950-C18AJYNN/A exceeds dimensions of a standard truck.
  • A “long vehicle” is necessary.
ewap ajynn options summary 1
Standard options

Brine version

Dual setpoint

Thermal relays compressors

Under/over voltage controller

Condenser Coils Alucoat

Flow switch for evaporator

Setpoint reset and demand limit

Alarm from external device

Rubber type antivibration mounts

Evaporator heater

Evaporator victaulics

Main switch

Electronic Expansion valve

EWAP-AJYNN: OPTIONS SUMMARY (1)
ewap ajynn options summary 2
OP57: A/V meter

OPLN: Low noise

OPGA: Gauges

OPCG: Coil guards

OPSS: Soft starter

OPAL: Blank Cu/AI coils

OPSN: Cu/Sn coils

OPCU: Cu/Cu coils

1Not available for EWAPC15-18AJYNN and EWAPC15-C18AJYNN/A

EWAP-AJYNN: OPTIONS SUMMARY (2)

Options on request

  • OPSP¹: Single pump
  • OPTP¹: Twin pump
  • OPTR: Heat recovery
  • OPPR: Partial Heat recovery
  • OPHF: High ESP fans
  • OPRN: Reduced noise
  • OPFS: Fan silent
  • OPLA: Low ambient
  • OPPF: Power factor 0.9
  • OP12: Suction stop valve

Unit types

  • /A: high efficiency
1 options as standard 1 2
1. OPTIONS AS STANDARD (1/2)

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.

slide28

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.

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.

slide29

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 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.

slide30

2. OPTIONS ON REQUEST (2/3)

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.

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.

slide31

2. OPTIONS ON REQUEST (3/3)

OP12: Suction line shut off valve– Suction shut-off valve

installed on the suction port of the compressor to facilitate

maintenance operation.

OPCG: Coil guards– Metal protection guards fixed on all the external surface of the condenser coils.

OP57: Ammeter and voltmeter– Digital meters of unit drawn amperes and voltage values, installed on the electrical control panel.

OPSS:Soft start–Electronic starting device to reduce starting current. An overload protection is included (no need of compressors thermal relays).

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.