EWAD 650-C18 BJYNN

EWAD650-C18BJYNN

2Apr 22, 2023

EWAD650-C18BJYNNAir Cooled Chiller - Cooling Only

538 kW ÷ 1920 kW

Single Screw Compressor

3Apr 22, 2023

TABLE OF CONTENTA. EWAD-BJYNN 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. Competitors comparisons1. EWAD-BJYNN Vs CARRIER 30GX Phase III

2. EWAD-BJYNN Vs CARRIER 30RB AquaSnap

3. EWAD-BJYNN Vs CARRIER 30XA AquaForce

4. EWAD-BJYNN Vs TRANE RTAC

5. EWAD-BJYNN Vs CLIMAVENETA FOCS

K. Options summary

4Apr 22, 2023

EWAD-BJYNN/A

4 EWAD-BJYNN noise versions available:

EWAD-BJYNN

79,0 ÷ 80,0 dB(A)

EWAD-BJYNN + OPRN

73,5 ÷ 76,5 dB(A)

EWAD-BJYNN + OPLN

71,5 ÷ 73,0 dB(A)

EWAD-BJYNN/Q

65,0 ÷ 66,5 dB(A)

4 EWAD-BJYNN/A noise versions available:

EWAD-BJYNN/A

79,0 ÷ 80,0 dB(A)

EWAD-BJYNN/A + OPRN

73,5 ÷ 76,5 dB(A)

EWAD-BJYNN/A + OPLN

71,5 ÷ 73,0 dB(A)

EWAD-BJYNN/Z

65,0 ÷ 66,5 dB(A)

EWAD-BJYNN Flexibility

EWAD-BJYNN

A. EWAD-BJYNN RANGE

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5Apr 22, 2023

EWAD-BJYNN– Unit efficiency level

C18

C16C15

C14

C13C12

C11

C10

950

900

850750700

650

C21

C20C19

C18

C17

C16

C15

C14

C13C12

C11

C10

950

900850

800

700

650

2.70

2.80

2.90

3.00

3.10

3.20

3.30

3.40

500 600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000

kW

EER

EWAD-BJYNN EWAD-BJYNN/A

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

6Apr 22, 2023

EWAD-BJYNN: cooling range

500 600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000

EWAD-BJYNN/Z

EWAD-BJYNN + OPLN

EWAD-BJYNN + OPRN

EWAD-BJYNN

kW cooling @ Evap. 12/7°C - 35°C OAT

2 compressors

2 compressors

2 compressors

2 compressors

3 compressors

3 compressors

3 compressors

3 compressors

4 compressors

4 compressors

4 compressors


7Apr 22, 2023

EWAD-BJYNN/A: cooling range

500 600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000

EWAD-BJYNN/Z

EWAD-BJYNN/A + OPLN

EWAD-BJYNN/A + OPRN

EWAD-BJYNN/A

kW cooling @ Evap. 12/7°C - 35°C OAT

2 compressors

2 compressors

2 compressors

2 compressors

3 compressors

3 compressors

3 compressors

3 compressors

4 compressors

4 compressors

4 compressors


8Apr 22, 2023

EWAD-BJYNN: sizes distribution

640 761 886 1057 1166 1322 1641

670 784 945 1062 1175 1296 1457 1553 1735

606 730 868 1116 1296 1457 1553 1735

539 650 759 869 974

17721520

12261109988817700

1016 1116868730606

1016

1062 1175670 784 945

1086

597 709 812 921 1055 1152

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

EWAD-BJYNN EWAD-BJYNN+OPRN

EWAD-BJYNN+OPLN EWAD-BJYNN/Q


9Apr 22, 2023

EWAD-BJYNN/A: sizes distribution

667 800 903 974 1094 1222 1354 1557 1710 1806 1920

640 769 881 953 1053 1177 1323 1512 1618 1762 1871

640 769 881 953 1053 1177 1323 1512 1618 1762 1871

569 840 953

1430128211771038926855723

140112381135998907822703

703 822 907 998 1135 1238 1401

631

668

914 1013

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

EWAD-BJYNN/A EWAD-BJYNN/A+OPRN

EWAD-BJYNN/A+OPLN EWAD-BJYNN/Z


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10Apr 22, 2023

EWAD-BJYNN version – Technical Solution

79.0 ÷ 80.0 dB(A) ISO 3744 - @ 1m hemispherical field

EWAD-BJYNN Helicoidal fans (860 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

C. TECHNICAL SOLUTION (1/4)

11Apr 22, 2023

EWAD-BJYNN + OPRN version – Technical Solution


EWAD-BJYNN + OPRNHelicoidal fans with good acoustic performance and no mechanical vibrations



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

Link back option summary


12Apr 22, 2023

EWAD-BJYNN + OPLN version – Technical Solution


EWAD-BJYNN + OPLN

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

Helicoidal fans with good acoustic performance and no mechanical vibrations



Discharge flexible pipe to avoid vibrations in the condensing section of the chiller due to the gas pulsations and compressor vibrationsFan speed reduction ( 680 RPM ) to attenuate the noise level of the chiller condensing section



13Apr 22, 2023

EWAD-BJYNN/Q version – Technical Solution


EWAD-BJYNN/Q

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

Helicoidal fans with good acoustic performance and no mechanical vibrations



Discharge flexible pipe to avoid vibrations in the condensing section of the chiller due to the gas pulsations and compressor vibrationsVery low fan speed value ( 500 RPM ) with fan speed control (phase cut) to reduce the noise level of the chiller condensing section.

Enhanced condensing section of the chiller


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14Apr 22, 2023

EWAD-BJYNN Unit Operating Limits

EWAD-BJYNN OPRN OPLN /QMax ambient temperature (at full load) °C 44 40 40 +40 (1)Min ambient temperature °C +10 (2) +10 (2) +10 (2) -10 (3)Max leaving evaporator water temperature °C 9 9 9 9Min leaving evap. water temp. (without glycol) °C 4 4 4 4Min leaving evap. water temp. (with glycol) °C -8 -8 -8 -8Max evaporator T °C 8 8 8 8Min evaporator T °C 4 4 4 4

Notes:

Unit version

(1) When air temperature is higher then +32°C fan speed control device (EWAD-BJYNN/Q units) sets up speed rotationincreasing cooling capacity and sound pressure level.

(2) When air temperature is lower than +10°C you need the fan speed control device. It allows the unit working with airtemperature down to – 10°C. OPLA allows to reach – 18°C.(3) Fan speed control device is standard furnished on the EWAD-BJYNN/Q units.

D. OPERATING LIMITS (1/2)

15Apr 22, 2023

EWAD-BJYNN/A – Unit Operating Limits

EWAD-BJYNN/A /A+OPRN /A+OPLN /Z

Max ambient temperature (at full load) °C 48 44 44 40Min ambient temperature °C +10 (2) +10 (2) +10 (2) -10 (3)Max leaving evaporator water temperature °C 9 9 9 9Min leaving evap. water temp. (without glycol) °C 4 4 4 4Min leaving evap. water temp. (with glycol) °C -8 -8 -8 -8Max evaporator T °C 8 8 8 8Min evaporator T °C 4 4 4 4

Notes:

Unit version

(1) When air temperature is lower than +10°C you need the fan speed control device. It allows the unit working with airtemperature down to – 10°C. OPLA allows to reach – 18°C.(2) Fan speed control device is standard furnished on the EWAD-BJYNN/Q units.

D. OPERATING LIMITS (2/2)

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16Apr 22, 2023

EWAD-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 rotorssuctioncompressiondischarge

E. COMPRESSOR FEATURES (1/3)

17Apr 22, 2023


“ 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


18Apr 22, 2023


“ Frame4 ”

Six electrical terminals to allow as standard a star-delta (Y-D) compressor start. For low inrush current and reduce starting torque

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

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


Link backLink back options summary

19Apr 22, 2023

EWAD-BJYNN – Truly Independent Refrigerant Circuits

i.e. EWAD-BJYNN with 3 refrigerant circuits: 3 compressors, 3 expansion valves, 3 condensing sections, 3 evaporating sections in the evaporator’s shell, 3 dry-filters

E. REFRIGERANT CIRCUITS

20Apr 22, 2023

EWAD-BJYNN - DX (Dry-eXpansion) shell & tube evaporator

1) One pass configuration on refrigerant side (R-134a) 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 hummer” phenomena damage

copper tube internally enhanced

E. DRY-EXPANSION SHELL AND TUBE

21Apr 22, 2023

EWAD-BJYNN – 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.

F. CONTROL & REMOTE CONTROL (1/4)

22Apr 22, 2023

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

Motherboard with microprocessors

Unit Controller fully programmed 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


23Apr 22, 2023

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

High value control functions implemented as standard into the logic



24Apr 22, 2023

EWAD-BJYNN – Microprocessor Control “Microtech II C Plus” 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 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)

Link back Option summary


Link back Table of content

25Apr 22, 2023

Unit is sold and delivered EXW (Ex works); Each unit is tested at full load before shipping; Unit handling must be according to IOM manual.

EWAD-BJYNN – Unit delivery, moving and lifting

I. UNIT DELIVERY (1/2)

26Apr 22, 2023

EWAD-BJYNN with 4 compressors can exceeds dimensions of a standard truck. Could be necessary a “long vehicle”.

Up to 13700 mm

EWAD-BJYNN – Unit delivery, moving and liftingI. UNIT DELIVERY (2/2)

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27Apr 22, 2023

EWAD-BJYNN: OPTIONS SUMMARY (1)• Standard options

– Brine version (OPZH;OPZL)– Double setpoint– Star delta compressor starter– Thermal relays compressors– Under/over voltage controller– Cond. Coils Alucoat– Flow switch for evaporator– Setpoint reset and demand limit– Alarm from external device– Rubber type antivibration mounts– Evaporator heater (OP10)– Main switch (OP52)– Epoxy coating (OPEP)– Electronic Expansion valve (OPEX)

28Apr 22, 2023

EWAD-BJYNN: OPTIONS SUMMARY (2)

– A/V meter (OP57)– Low noise (OPLN)5

– Gauges (OPGA)– Coil guards (OPCG)– Soft starter (OPSS)– Blank Cu/AI coils (OPAL)– Cu/Sn coils (OPSN)– Cu/Cu coils (OPCU)

1 Not available for EWAD14-18BJYNN and EWADC16-C21/A 2 Not available for EWAD800-850BJYNN/Q and EWAD850-900BJYNN/Z3 Not available for EWAD-BJYNN/Q and EWAD-BJYNN/Z4 Not available for EWAD-BJYNN/Q and EWAD-BJYNN/Z5 Not available for EWAD-BJYNN/Q and EWAD-BJYNN/Z

• Options on request– Cu/Ni heat exchanger (OPNI)– Single & Twin pump (OPSP;OPTP)¹– Heat recovery (OPTR;OPPR)– High ESP fans (OPHF)²– Reduced noise (OPRN)³– Fan silent (OPFS)– Low ambient (OPLA)4

– Power factor 0.9 (OPPF)– Suction stop valve (OP12)

29Apr 22, 2023

1. OPTIONS AS STANDARD (1/2)

OP12 - 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 the customer).

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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30Apr 22, 2023

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 CONDENSING COILS – Fins are protected by a special acrylic paint with a high resistance to corrosion.

OP10 – Evaporator electric heater – Electric heater controlled by a thermostat to protect the evaporator from freezing down -28°C ambient temperature

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)


31Apr 22, 2023

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 – 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.


32Apr 22, 2023

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.


33Apr 22, 2023

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.

2. OPTIONS ON REQUEST (3/3)


34Apr 22, 2023

COMPETITORS COMPARISONS

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35Apr 22, 2023

1. EWAD-BJYNN Vs CARRIER 30GX Phase III

with R134a

Vs

with R134a

36Apr 22, 2023

30 GX has 16 sizes in range 280 – 1200 kW (Eurovent certified)

30GX is equipped with old Carlyle double screw compressor

1. Noisy gear transmission

2. Only available with steps cooling capacity regulation (3 steps)

EWAD-BJYNN


37Apr 22, 2023

30GX is equipped with flooded evaporator (only 2 refrigerant circuits)

1. Sizes 207-267 have 3 compressors: 2 compressors on first refrigerant circuit and 1 on the second circuit

2. Sizes 298-358 have 4 compressors: 2 compressors per refrigerant circuit

30 GX has only one efficiency level available with EER 2.7÷2.9


38Apr 22, 2023

30 GX has Y-D starter available as std. up to size 182, D.O.L starter above

4 noise versions: standard - compressor enclosure - field installed kit - opt15LS

Note (1): option 15LS includes compressor & evaporator enclosure + field installed absorbing kitNote (2): subtract 20 dB(A) to quickly have sound pressure indication @ 1m


39Apr 22, 2023

Field installed acoustic kit (louvers wall)

Unit weight increases: - 500kg for 082- 900kg for 182- 1300kg for 358

Maintenance activities are affected

Field acoustic reliability ?


40Apr 22, 2023

30GX options available on Carrier price list (some of them…)


41Apr 22, 2023

EWAD-BJYNN strength point Vs CARRIER 30GX Phase III1. Infinitely variable cooling capacity control down to 6.2% of nominal

chiller cooling load (EWAD-BJYNN with 4 compressors) to exactly match plant thermal load and respect chilled water temperature set-point within ±0,2 K;

2. Y-D starter as standard on all Daikin models to minimize maximumin-rush currents;

3. Much more flexibility on noise version availability to match customers orsite installation requirement; EWAD-BJYNN/Z level not reachable by Carrier.

4. All Daikin OPRN versions obtained without heavy and large field-installed acoustic solution;

5. With EWAD-BJYNN/A is possible to reach higher EER value for energy savingand energy management cost saving;

6. EWAD-BJYNN has really independent refrigerant circuits (one compressor per circuit);30GX models above 700 kW are equipped with 2 compressors per circuit;

7. Single screw reliability is naturally higher than double-screw, gear driven.

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42Apr 22, 2023

with R410A

with R134a

Vs


43Apr 22, 2023

30 RB has 12 sizes in range 250 – 750 kW (Eurovent certified)

4x 8x 12x

30 RB is equipped with R410A Danfoss-Maneurop scroll compressors

30RB has 2 & 3 circuits: up to 4 scroll compressors on same circuit !!

ALS “F”


44Apr 22, 2023

98 104 121 128 147 151 169 191 218 240 265 288Total power input

30 RB has only one efficiency level available with EER 2,6 ÷ 2,75

3 noise versions: standard – Euro Pack (scroll enclosure) – Very Low noise

Note (1): very low noise version is equipped with compressors sound enclosure and with low speed helicoidal fansNote (2): subtract 20 dB(A) to quickly have sound pressure indication @ 1m


45Apr 22, 2023

30 RB is equipped with integrated and complete hydronic module (option)

1. Centrifugal low or high pressure water pumps

2. Single or dual “in-line” pump/s

3. Water filter, pressure gauge, thermal insulation

4. Expansion tanks with high capacity

5. Water flow control valve (18 control turn)

30 RB options available on Carrier price list (some of them…)

DX free cooling system scheme


46Apr 22, 2023

EWAD-BJYNN strength point Vs CARRIER 30RB AquaSnap

1. Infinitely variable cooling capacity control down to 6,2% of nominalchiller cooling load (EWAD-BJYNN with 4 compressors) to exactly match plant thermalload and respect chilled water temperature set-point within ±0,2 K;

2. Truly compressor semi-hermetic design to facilitate ordinary chillermaintenance: hermetic scroll compressors cannot be inspected, maintained and serviced. In case of motor burnout replacement of all compressorsinstalled on that refrigerant circuit is needed

3. Much more flexibility on noise version availability to match customers orsite installation requirement; EWAD-BJYNN/Z level not reachable by Carrier.

4. With EWAD-BJYNN/A is possible to reach higher EER value for energy savingand energy management cost saving;

5. EWAD-BJYNN has really independent refrigerant circuits with one compressorper circuit: AquaSnap is equipped with even 4 scroll on same circuit!

6. Single screw with R134a reliability Vs scroll technology with R410A in aircooled application (very high condensing pressure values)

7. Higher part load efficiency for multiscroll? Let’s talk about that…

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47Apr 22, 2023

with R134a

with R134a

Vs


48Apr 22, 2023

30 XA has 20 sizes in range 260 – 1670 kW (Eurovent certified)

30 XA is equipped with new Carrier double screw compressor

1. Double screw with step less cooling capacity control

2. Direct driven screw compressor (no more gear transmission)

3. External oil separator

4. Compressor on slide rails to facilitate maintenance activities

EWAD-BJYNN


49Apr 22, 2023

30 XA is equipped with new condensing coil design (MCHX solution)

1. Aluminium micro-channel heat exchanger coils (MCHX)

2. Three times higher corrosion resistance than copper/aluminium coils because no “galvanic currents” effect (30XA Carrier brochure)

3. V coil shape

30 XA is equipped with flooded evaporator and 2 or 3 or 4 independent circuits

Note: units longer than 12 m (1402-1502-1702) are composed on site with 2 modules available


50Apr 22, 2023

+

+2x

2x

2x

1x

Note: 2 electrical connection points

Note: 2 electrical connection points

30XA 140230XA 1502

30XA 1702


51Apr 22, 2023

30 XA has 2 efficiency versions: standard and high efficiency (option 119)

EER 2,7 ÷ 3,1 EER 3,1 ÷ 3,3


52Apr 22, 2023

30 XA maximum start-up current: Y-D starter as standard on all AquaForce units

30 XA has 2 sound levels: low noise unit (std efficiency) – high efficiency unit

Note : subtract 20 dB(A) to quickly have sound pressure indication @ 1m


53Apr 22, 2023

EWAD-BJYNN strength point Vs CARRIER 30XA AquaForce

1. Truly compressor semi-hermetic design to facilitate ordinary chillermaintenance.

2. Much more flexibility on noise version availability to match customers orsite installation requirement; EWAD-BJYNN/Q or /Z level not reachable by Carrier.

3. Single packaged unit with a single power connection point; AquaForce above 1400 kW are basically two separate machines.

4. Carrier 30XA dimensions are bigger than EWAD-BJYNN on every single capacity

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54Apr 22, 2023


with R134a

Vswith R134a

55Apr 22, 2023

RTAC has 13 sizes in range 420 – 1500 kW (Eurovent certified)

Rating @ Evap. 12/7 °C - OAT 35°CTotal

Note: sizes 120 - 130 are not available in standard efficiency configuration


56Apr 22, 2023

RTAC has 2 efficiency version: standard (STD) and high (HE)

TotalRating @ Evap. 12/7 °C - OAT 35°C


57Apr 22, 2023

RTAC has 2 noise version: standard - low noise (LN)

1) TRANE standard noise level: 99 ÷ 103 dB(A) sound power level

2) TRANE low noise level: 92 ÷ 96 dB(A) sound power level

- TRANE Night Noise Setback (option): 89 ÷ 95 dB(A) sound power level

Note: subtract 20 dB(A) to quickly have sound pressure indication @ 1m

RTAC is equipped with TRANE double screw compressors

1. Double screw with step less cooling capacity control

2. Compressor step less control only down to 40%, then step down to 30% that is minimum compressor load

3. Direct driven screw compressor

4. External oil separator

5. External oil cooling system (some copper tubes at the coil bottom)


58Apr 22, 2023

RTAC is equipped with flooded evaporator and 2 refrigerant circuits

1. Sizes 250-300 have 3 compressors: 2 compressors on first refrigerant circuit and 1 on the second circuit

2. Sizes 350-400 have 4 compressors: 2 compressors per refrigerant circuit

Example: RTAC drawing for 3 compressors model

RTAC is equipped with Y-D starter as standard


59Apr 22, 2023

EWAD-BJYNN strength points Vs TRANE RTAC

1. Infinitely variable cooling capacity control down to 6,2% of nominalchiller cooling load (EWAD-BJYNN with 4 compressors) to exactly match plant thermalload and respect chilled water temperature set-point within ±0,2 K;Trane can follow plant load request down to 20% with 2 compressors;

2. Truly compressor semi-hermetic design to facilitate ordinary chillermaintenance;In case of problem with compressor Trane advices to change it entirely;

3. Much more flexibility on noise version availability to match customers orsite installation requirement; EWAD-BJYNN/Z or /Q level not reachable by Trane.

4. EWAD-BJYNN has really independent refrigerant circuits with one compressorper circuit: RTAC is equipped even with 2 screw on same circuit !

5. Single screw reliability is naturally higher than double-screw one

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60Apr 22, 2023


with R134a

Vswith R134a

61Apr 22, 2023

FOCS has 25 sizes in range 290 ÷ 1740 kW

EWAD-BJYNN

EWAD-BJYNN


62Apr 22, 2023

FOCS has 2 efficiency versions: standard efficiency – high efficiency

1) FOCS models are standard efficiency: EER 2.7 ÷ 3.0

2) FOCS-CA models are high efficiency: EER 3.1 ÷ 3.26

FOCS-CA table of performancesFOCS-CA cooling range 310 ÷ 1380 kW


63Apr 22, 2023

FOCS has 3 noise versions: B – LN – SL

1) FOCS B (standard noise) level: 99 ÷ 105 dB(A) sound power level

2) FOCS LN (low noise) level: 93 ÷ 99 dB(A) sound power level- compressors enclosure- fan speed reduction

3) FOCS SL (super low noise) level: 87 ÷ 92 dB(A) sound power level- compressor enclosure- fans speed reduction- oversized condensing section- muffler on compressor discharge lineNote : subtract 20 dB(A) to quickly have

sound pressure indication @ 1m


64Apr 22, 2023

FOCS and FOCS-CA models are equipped with Bitzer compressors

1. Double screw by Bitzer

2. Step cooling capacity control as standard (step less is available as option)

3. Direct driven screw compressor

4. Integrated oil separator

5. Y-D starter as standard thanks 6 motor terminal power connections

Integrated oil separator

Double screw profiles

Rolling bearings


65Apr 22, 2023

EWAD-BJYNN strength points Vs CLIMAVENETA FOCS and FOCS-CA

1. Infinitely variable cooling capacity control down to 12% of nominalchiller cooling load (EWAD-BJYNN with 2 compressors) to exactly match plant thermal load and respect chilled water temperature set-point within ±0,2 K;Bitzer compressors have steps regulation as standard;

2. Much more flexibility on noise version availability to match customers orsite installation requirement; EWAD-BJYNN/Q or /Z level not reachable by Climaveneta.

3. Single screw reliability is naturally higher than double-screw one

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66Apr 22, 2023

Engineered for flexibility and performance.™

Documents

EWAD 650-C18 BJYNN