EWWD380-C11BJYNN

2Apr 21, 2023

Water Cooled Chiller

369 kW ÷ 1050 kW

Single Screw Compressor

EWWD380-C11BJYNN

3Apr 21, 2023

TABLE OF CONTENT

A. Unit position into the range

B. Operating Limits

C. Compressor features

D. Refrigerant Circuit

E. Flooded evaporator

F. Refrigerant level control

G. Control & remote control

H. Unit delivery

I. Options summary

A. Options as standard

B. Options on request

4Apr 21, 2023

EWWD-BJYNN: unit efficiency level

C11C10900

850750

550

460380

5

5.1

5.2

5.3

5.4

5.5

5.6

5.7

5.8

5.9

6

200 300 400 500 600 700 800 900 1000 1100 1200

kW

EE

R

A. UNIT POSITION INTO THE RANGE (1/2)

5Apr 21, 2023

EWWD-BJYNN : cooling range

kW cooling @ Evap. 12/7°C - Cond. 30/35°C

200 400 600 800 1000 1200

kW cooling @ Evap. 12/7°C - Cond. 30/35°C

2 Compressors1 Compressor

A. UNIT POSITION INTO THE RANGE (2/2)

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6Apr 21, 2023

B. OPERATING LIMITS

Max evaporator leaving water temperature °C 15Min evaporator leaving water temperature (without glycol) °C 3Min evaporator leaving water temperature (with glycol) °C -8Max condenser leaving water temperature °C 50

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7Apr 21, 2023

EWWD-BJYNN – Single Screw Compressor

“ Frame4 ” single screw compressor

naturally axial balanced loads

naturally 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)

8Apr 21, 2023

EWWD-BJYNN – 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)

9Apr 21, 2023

EWWD-BJYNN – Single Screw Compressor

“ Frame4 ”

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

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

External oversized oil separator for the highest efficiency (99.985%) requested by flooded heat exchanger.

C. COMPRESSOR FEATURES (3/3)

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10Apr 21, 2023

EWWD-BJYNN – P&ID. REFRIGERANT CIRCUIT

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11Apr 21, 2023

EWWD-BJYNN – Flooded evaporator

McQuay engineered and manufactured flooded evaporator (with refrigerant in shell and water inside the tubes) for high performance. Same centrifugal chillers technology.

Replaceable water tubes internally rifled and externally enhanced copper, mechanically bonded to steel tube sheets

Two compressors on the same flooded evaporator to increase part load efficiency.

PART LOAD PERFORMANCE ARI std

0

1

2

3

4

5

6

7

8

9

10

0 10 20 30 40 50 60 70 80 90 100COOLING CAPACITY %

CO

P

E. FLOODED EVAPORATOR

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12Apr 21, 2023

EWWD-BJYNN – Servo controlled refrigerant level regulator

Servo controlled liquid regulator is operating by a pilot float valve that is leading the open/close sequence of the main exp. valve to optimize refrigerant feed to the evaporator in all the working conditions

F. REFRIGERANT LEVEL CONTROL

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13Apr 21, 2023

EWWD-BJYNN – Microprocessor Control “Microtech II C Plus”

Motherboard with microprocessors

Unit Controller fully programmed and engineered by McQuay 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

G. CONTROL & REMOTE CONTROL (1/3)

14Apr 21, 2023

High value control functions implemented as standard into the logic

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EWWD-BJYNN – Microprocessor Control “Microtech II C Plus”

G. CONTROL & REMOTE CONTROL (2/3)

15Apr 21, 2023

Easy integration into building automation systems via separate digital connection for unit start/stop, status, general fault and 4-20 mA signals for chilled water setpoint reset and demand limiting; Communications capabilities for remote monitoring, changing of setpoint, trend logging, alarm and event detection, via a compatible IBM-PC with Daikin PlantVisor 1.0 software; BMS communication capability via Modbus, BacNet, LonWorks protocol; Remote communications capabilities via modem/GSM (up to 8 chillers with Gateway Modem); Compatibility with Daikin CSC II (Chiller Sequencing Control)

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EWWD-BJYNN – Microprocessor Control “Microtech II C Plus”

G. CONTROL & REMOTE CONTROL (3/3)

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16Apr 21, 2023

EWWD-BJYNN – 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.

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H. UNIT DELIVERY

17Apr 21, 2023

EWWD-BJYNN: OPTIONS SUMMARY

• Standard options– Brine version (OPZH;OPZL)

– Double setpoint

– Thermal relays compressors

– Under/over voltage controller

– Victaulic on condenser

– Flow switch for evaporator

– Setpoint reset and demand limit

– Alarm from external device

– Rubber type antivibration mounts

– Main switch (OP52)

– Electronic Expansion valve (OPEX)

• Available options– Power factor 0.9 (OPPF)

– Suction stop valve (OP12)

– A/V meter (OP57)

– Soft starter (OPSS)

– Cu/Ni heat exchanger

18Apr 21, 2023

1. OPTIONS AS STANDARD (1/2)

FLOW SWITCH – Supplied separately to be wired and installed on the evaporator

water piping (by the customer).

COMPRESSOR THERMAL OVER RELAYS – Safety devices against

compressor motor overloading in addition to the normal protection envisaged by

the electrical windings.

UNDER/OVER VOLTAGE – Phase monitor to control the minimum and maximum

voltage value that the user can set.

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

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19Apr 21, 2023

RUBBER TYPE ANTIVIBRATION MOUNTS – Supplied separately, these are

positionned under the base of the unit for “floor installation”

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

1. OPTIONS AS STANDARD (2/2)

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20Apr 21, 2023

2. OPTIONS ON REQUESTOPSS 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.

OPLN Sound proof cabinet – Made of sheet metal and internally insulated, the sound proof cabinet is around the compressor/s reach the best performance in noise reduction.

OPPF- Capacitor power factor correction - Installed on the electrical control panel to ensure it conforms to the plant rules (Daikin advises maximum 0,9).

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

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21Apr 21, 2023