30DW

Water-Cooled Screw Liquid Chiller

Cooling capacity: 270~350RT
 Carrier is a leading global range of residential, commercial
provider of innovative HVAC, and industrial applications.
refrigeration, fire, security and
building automation technolo-
gies. Supported by the iconic
Carrier name, the company’s
portfolio includes industry-
leading brands such as Carrier,
Kidde, Edwards, LenelS2 and
Automated Logic. Carrier ’s
businesses enable modern life,
delivering efficiency, safety,
security, comfort, productivity
and sustainability across a wide

In 1998, Time magazine named Dr. Carrier

one of its 20 most influential builders and
titans of the 20thcentury.
Model Size Nomenclature

30DW MC B 2 RC C 2 N 6 2
Input power code
1: 380V-3Ph-50Hz 2: 400V-3Ph-50Hz
Compressor frame code

Economizer Configuration
EWith Economizer N Withtout Economizer
Condenser water pass, 2-dual passes

Condenser tube type

Condenser frame & bundle size

(RC,RD,RG,RH,T6,T8,V7,V8)
Evaporator water pass, 2-dual passes, 3- three passes

Evaporator tube type

Evaporator frame & bundle size

(MC,MD,ME,MG,O3,O5,P5,P6,PJ)
Carrier liquid chiller with screw compressor

Operating Range
Cooling/Heating
Evaporator Minimum Maximum
Entering temperature at start-up - 35
Leaving temperature during operation 3.3* 20
Entering/leaving temperature difference at full load 2.8 11.1
Condenser Minimum Maximum
Entering temperature at start-up 13 -
Leaving temperature during operation 19** 42 ***

Entering/leaving temperature difference at full load 2.8 11.1

Notes:
1. *If the leaving water temperature is below 3.3 , a frost protection solution must be used.
2. **If the temperature leaving the condenser is below 19 , a water flow control valve (option) must be used at the condenser (two or three-way valve).
3. ***Some models' condenser leaving temperature has slight difference due to different frames during the operation, please refer to E-CAT report for details.

All data over 200Tons (50Hz) in this catalogue is certificated in accordance with AHRI Standard 550/590 and 551/591 as represented
in the selection software (E-Cat).
Certified units may be found in the AHRI Directory at www.ahridirectory.org
http://www.ahridirectory.org

2
General Features
The latest generation Aquaforce liquid chillers are the premium solution for industrial and commercial
applications where installers, consultants and building owners require optimal performances and
maximum quality.
The 30DW liquid chillers are designed to meet current and future requirements in terms of energy
efficiency, flexibility of use and compactness. They use the most reliable technologies available today:
- Twin-rotor screw compressors with a variable capacity valve.
- Refrigerant R134a.
- Carrier SmartView® control system.
- Flooded heat exchangers that are mechanically cleanable.
To meet to all environmental and economic requirements, the 30DW is available in different efficiency
classes with flexible selection functions.
- It can offer the standard efficiency chiller which has the excellent quality with superior cost advantage
designed to maximize savings, it's the cost-effective choice, suitable for comfort cooling of hotels, offices
and industrial settings.
- It can offer the medium-efficiency chiller which optimize balance of technical and economical aspects
while at the same time boasting superior energy efficiency.
- It can also offer the high-efficiency chiller which has the unequalled energy efficiency to satisfy the most
stringent demands of building owners wanting to reduce operating costs to the minimum.
The 30DW Aquaforce is designed for air conditioning and refrigeration applications, The standard unit
can provide an evaporator leaving water temperature down to 3.3℃, as for the low temperature applica-
tion which allows the chiller operate with evaporator leaving glycol temperature down to -6℃.

High efficiency
Full load efficiency up to 6.4 and part load efficiency up to 8.7 at AHRI IP operation conditions.
New twin-rotor screw compressor 06W equipped with a high efficiency motor and a variable capacity
valve that permits exact matching of the cooling capacity to the load.
Flooded multi-pipe evaporator and condenser with sensible subcooler for increased heat exchange
efficiency.
High performance copper tube bundle with internal and external grooves along with enhanced fins
improves chiller efficiency by reducing the heat transfer resistance.
The heat changer has a low water pressure drop which results in reduced power consumption of water
pump.
Electronic expansion device permitting operation at a lower condensing pressure and improved utiliza-
tion of the evaporator heat exchange surface.

Low sound levels

30DW equipped with multi sound and vibration treatment technologies to improve sound performance.
The optional innovative lagging can further reduce the unit sound level.
30DW chillers meet 18001 standard recommended by Occupational Health and Safety Advisory
Services (OHSAS).

Environmental care
R-134a refrigerant
- HFC refrigerant with zero ozone depletion potential.
Leak-tight refrigerant circuit
- Reduction of leaks as no capillary tubes and are connections are used.
- Verification of pressure transducers and temperature sensors without transferring refrigerant charge.
- Discharge line shut-off valve and liquid line service valve for simplified maintenance.

3
 Absolute reliability

Major components of 30DW are selected and tested to minimize failure possibility, as well as many
design choices have been taken in this perspective.
Screw compressors
- Industrial-type screw compressors with robust bearings,motor cooled by suction gas and stepless
load adjustment by gas drived slide valve.
- Patented line-design screw rotors and microprocessor-based control to guarantee accurate meshing
and enhance service life.
- Reduced number of moving parts, with compressor rotors directly driven by the motor to lower the
failure rate and enhance reliability.
- All compressor components are easily accessible on site minimizing down-time.
- In case of power outages, 30DW can intelligently restart the compressor and cooling capacity can
be quickly recovered to the demanded cooling load in a short period of time once the power recovers,
thanks to the compressor design with fast capacity loading system.
Evaporator
- The electronic paddle-free flow switch can self-adapt smartly to the actual cooler size and fluid
type.
- 30DW chillers can handle sudden and large load variations up to 30% change in water flow rate per
minute while maintaining leaving chilled water temperature with in close tolerance of ±1
Excellent electric
- Closed Y-delta starter as standard offer the starting current less than 2.5 times of the rated current .
- Fused disconnect switch provide reliable protection for chiller and realize local lock out /tag on.
- Emergency switch can disconnect compressor power supply in emergency.
- IP23 electronic box protection level, customized IP44 (optional) can meet special environment.
Auto-adaptive control
- Control algorithm prevents excessive compressor cycling (Carrier patent).
- Automatic compressor unloading in case of abnormally high condensing pressure.
- Control system has comprehensive protection during operation, such as oil temperature control,
overvoltage and overcurrent protection, discharge temperature overheat protection, heat exchanger
anti-freeze protection etc. in order to ensure chiller long time reliable operation.
Exceptional endurance tests
- Partnerships with specialized laboratories and use of limit simulation tools (finite element calculation)
for the design of critical components.
- Transport simulation test in the laboratory on a vibrating table and then on an endurance circuit

Easy and fast installation

Compact design
- The compact chiller design of 30DW offers ease of installation at site.
- With a width of 1.4m, the units can pass through standard door openings and only require minimum
floor space in the plant room.
Simplified electrical connections
- Main disconnect switch with fuses.
- Transformer supply to the integrated control circuit (400/24 V).
Simplified water connections
- Victaulic pipe connections on the evaporator and condenser.
- Labeled entering and leaving water pipes.
- Flexible heat exchanger entry and exit connections at factory.
- Additional heat exchanger passes for special requirements.
Fast commissioning
- Comprehensive system operation test at factory prior to the shipment.
- Quick-test function for step-by-step verification of the instruments, expansion devices and compres-
sors.

4
Carrier SmartView® Control System - Intelligent Colored Touch Screen

30DW chiller employs Carrier’s most advanced Carrier SmartView® controller that delivers distinct capabilities of
controlling and monitoring the chiller operations.
Equipped with a 7 inch high-resolution touch screen, Carrier SmartView® controller offers more user-friendly interface
with intuitive graphical operational data in real time, adapts precisely the chiller capacity to building load and provides
comprehensive protection.

Reliable Start - up and Operation

Carrier SmartView® controller offers password protection to avoid any unauthorized operation.
When chiller starts, the controller will activate pre-start process to check parameters such as pressure, temperature,
motor status, water flow etc.
In addition to the function of monitoring the main operational parameters, trending function provide the visual dynamic
parameter curves. The intelligent and dynamic algorithm ensures optimal, effective and reliable chiller operation.
The control system provides following comprehensive protection, which guarantees steady chiller operation:
- Overcurrent.
- Discharge temperature overheat.
- Motor temperature overheat.
- Evaporator and condenser anti-freeze.
- Low discharge superheat.

Effective Failure Diagnostic

Carrier SmartView® control system has more than 100 failure diagnostic function. Users can easily access chiller
operation parameters via touch screen. If control system detects failure the alarm will be initiated and related code will
be recorded in alarm menu. The alarm records, up to 50, can be automatically saved by control system. Carrier service
technician can read and delete alarm records by Carrier service/PCDCT tools.
The control system can automatically send out email alarm to customer or service technician.

5
Intelligent Remote Connection and Control

Carrier SmartView® control panel supports CCN, BACnet IP, Modbus TCP/IP and Modubs RTU protocols, with which
chiller can seamlessly connect with the Building Automation System or the i-VuTM/WebCTRL control network. Moreover,
LonWorks, J-Bus and BACnet MSTP is also supported with optional gateway.
An industrial Internet intelligent protocol module WIFI dongle housed in electrical cabinet has the function of conversion
and transmission of data and can connect the field chiller controllers through the wireless network. Chiller operational
data can be transmitted to the remote server (Smart Service by Carrier) via wireless network, 4G, etc., so as to monitor
chiller data and fault alarm.
Carrier Smart Service (optional) based on “Big Data Processing” provides value added customer service such as
online data management and analysis, daily and key performance reports, prognostics and preventative maintenance
and graphic data trend. The enhanced data management and analysis will help achieve continuous optimization of the
chiller and system operation.
Carrier Smart Service changes how equipment is serviced and maintained. Carrier service technicians now utilize
mobile devices with remote access to put real-time chiller data and service history in the palm of their hands. With
advance notification of problems, technicians arrive at the jobsite more informed, which leads to faster problem
resolution and reduced mean time to repair.

Carrier Smart Service

Remote connection

Carrier chiller (with WiFi dongle)

Building Management System

Main Page

Control system main page operation and primary parameters monitored:

- Main page button
- Menu page button
- Log in/Language button
- Start-up/Stop page button
- Alarm menu button
- Setting point
- Chiller load percentage
- Condensing water pump status
- Chilled water pump status
- Condenser water inlet/outlet temperature
- Evaporator water inlet/outlet temperature

Customer can easily read following primary information of chiller,

components status and access to other interfaces from this page:
- Temperature/Pressure page
- Input/Output parameter page
- Water system parameter page
- Operation time
- Mode

6
Performance data
30DW
Model 30DWMCC 30DWMCB 30DWO3C 30DWP5B 30DWMCB 30DWMDB 30DWO3C 30DWP5B 30DWMGC 30DWMGC 30DWO5C 30DWP5B 30DWO3B 30DWPJB
2RCC2N62 2RHB2N62 2T8C2N62 2V7C2N62 2RCC2N62 2RHB2N62 2T6B2N62 2V8C2N62 2RCC2N62 2RGB2N62 2T8C2N62 2V7B2N62 2T6C2N62 3V8B2N62

kW 984.7 984.7 984.7 984.7 1055 1055 1055 1055 1136 1143 1143 1143 1224 1231
Capacity

USRT 280 280 280 280 300 300 300 300 323 325 325 325 348 350

COP @ AHRI IP kW/kW 5.274 5.560 6.056 6.254 5.309 5.620 6.058 6.270 5.356 5.628 6.068 6.330 6.026 6.445

Water Flow Rate L/s 42.26 42.26 42.26 42.26 45.28 45.28 45.28 45.28 48.75 49.05 49.05 49.05 52.53 52.83

Water Pressure drop kPa 46.2 45.5 35.5 26.8 52.0 44.7 40.1 30.7 35.7 36.1 37.8 36.0 49.0 56.6
Evaporator
Pass No. 2 3

Water connection DN 200 200 200 200 200 200 200 200 200 200 200 200 200 200

Water Flow Rate L/s 54.50 54.05 53.38 53.14 58.33 57.82 57.19 56.92 62.72 62.63 61.94 61.58 66.39 66.15

Water Pressure drop kPa 28.0 30.3 31.5 29.3 31.7 34.5 51.5 27.4 36.1 48.7 41.2 43.2 58.4 40.3
Condenser

Pass No. 2 2

Water connection DN 200 200 200 200 200 200 200 200 200 200 200 200 200 200

Screw compressor
Compressor

No. 1 1 1 1 1 1 1 1 1 1 1 1 1 1

Input power kW 186.7 177.1 162.6 157.4 198.7 187.7 174.2 168.3 212.1 203.1 188.4 180.6 203.1 191.0

Refrigerant HFC-134a

Refrigerant Charge kg 180 170 290 330 180 170 280 338 195 180 300 330 280 346

Shipping weight* kg 5422 5435 6339 6772 5422 5455 6268 6848 5509 5484 6391 6772 6268 6867

Operation weight kg 5266 5291 6338 6874 5266 5321 6229 6989 5411 5373 6420 6874 6229 7096

Length mm 3475 3475 3507 3824 3475 3475 3507 3824 3475 3475 3507 3824 3507 3852

Dimension Width mm 1427 1427 1493 1507 1427 1427 1493 1507 1427 1427 1493 1507 1493 1507

Height mm 2309 2309 2449 2499 2309 2309 2449 2499 2309 2309 2449 2499 2449 2499

Notes:1. Based on AHRI IP condition: Evaporator chilled water outlet temperature 6.67, chilled water inlet temperature 12.22, fouling factor=0.0176m 2K/kW

Condenser cooling water inlet water temperature 29.44, cooling water outlet temperature 34.61 , fouling factor=0.044m 2K/kW
2. Above performance is based on GB pressure vessel heat exchanger design, water side pressure is 1.0MPa, for the requirements of ASME pressure vessel design etc., please contact
Carrier local agencies.
3. Above performance is based on the E-Cat selection, the power supply is 400V-3Ph-50Hz.
4. Carrier will select specific models using E-Cat on different requests for tonnage and efficiency, for details or customized selections,please contact Carrier local agencies.
5. * The shipment weight is only base unit and wooden crating, excluding refrigerant and water inside.

7
Electrical parameters (400V-3Ph-50Hz)

30DWMCC 30DWMCB 30DWO3C 30DWP5B 30DWMCB 30DWMDB 30DWO3C 30DWP5B 30DWMGC 30DWMGC 30DWO5C 30DWP5B 30DWO3B 30DWPJB
Model
2RCC2N62 2RHB2N62 2T8C2N62 2V7C2N62 2RCC2N62 2RHB2N62 2T6B2N62 2V8C2N62 2RCC2N62 2RGB2N62 2T8C2N62 2V7B2N62 2T6C2N62 3V8B2N62

Rated Voltage V-ph-Hz 400-3-50

Voltage Range V 360-440

Control circuit 24 V per internal transformateur

Nominal start-up current* A 712 712 712 712 712 712 712 712 712 712 712 712 712 712

Maximum start-up current ** A 712 712 712 712 712 712 712 712 712 712 712 712 712 712

Cosine Phi 0.91 0.91 0.91 0.91 0.91 0.91 0.91 0.91 0.92 0.91 0.91 0.91 0.91 0.91

Maximum power draw kW 222.4 216.8 205.1 201.4 236.1 230.0 218.2 214.1 252.3 246.3 235.2 230.1 249.3 245.1

Nominal current draw A 295.2 280.5 258.3 250.3 313.8 296.8 276.0 267.0 334.3 320.5 297.8 285.8 320.5 301.9

Maximum current draw (Un) A 352.7 343.9 325.3 319.5 374.5 364.8 346.1 339.6 395.8 390.7 373.1 365.0 395.5 388.8

Maximum current draw (Un -10%) A 388.0 378.3 357.8 351.5 412.0 401.3 380.7 373.6 435.4 429.8 410.4 401.5 435.1 427.7

*Instantaneous start -up current (locked rotor current of the largest compressor + the rated load current of other smaller motors at norminal operating conditions)
**Instantaneous start -up current (locked rotor current of the largest compressor + the maximum load current of other smaller motors at maximum unit conditions)
Nominal current draw obtained at AHRI IP condition: evaporator temperature entry/leave water = 12.22 /6.67 , condenser temperature entry/leave water = 29.44 /34.61 .
Maximum current/power draw obtained at operation with maximum unit power input.
Carrier will select specific models using E-Cat on different requests for tonnage and efficiency, for details or customized selections,please contact Carrier local agencies.

Wiring diagram

1.5 mm2 MAX. 1.5 mm2 MAX. 1.5 mm2 MAX. 2.5 mm2 MAX.
24VAC - 24VA MAX 24VAC - 48VDC MAX
20V - MIN
MODBUS/BACNET CONNECTOR

ETHERNET CONNECTOR

CCN CONNECTOR

COOLER PUMP 2 COMMAND

COOLER PUMP 1 COMMAND

CONDENSER PUMP 2 COMMAND

CONDENSER PUMP 1 COMMAND

COOLING/HEATING SWITCH

(JUMPED AS DEFAULT)
DEMAND LIMIT SWITCH
SET POINT SWITCH

REMOTE ON/OFF SWITCH

READY

ALARM
80mA MIN - 3A MAX

80mA MIN - 3A MAX

0.5A MAX

0.5A MAX

0.5A MAX

0.5A MAX
91A
90A
12

12
90

91

74
73
64
63
66
65
33
32

38
37

31
30
J6

J2

J1

J22

J23
+
C
SHD
-

+
C
-
J10
Modbus RTU

J15
Ethernet

J7
CCN

DOO4

DOO3

DOO2

DOO1

+C
DIO4
+C
DIO3
+C
DIO2
+C
DIO1

DOO6

DOO5

24VAC, 20mA
ASM

A11

8
Options & accessories

Options Description Advantages

Brine application down to -6°C leaving fluid Covers specific application such as
Medium Brine
temperature ice storage and industrial processes

Reinforced h.x. for extension of the maxi-

Covers applications with a high water
16 bar heat exchangers mum water-side service pressure to 16 bar
column(high buildings)
(standard 10 bar)

Reinforced h.x. for extension of the maxi-

Covers applications with a high water
21 bar heat exchangers mum water-side service pressure to 21 bar
column(high buildings)
(standard 10 bar)

38mm thermal insulation on cooler and comp Reduce the heat dissipation of the
Evaporator insulation
support evaporator to the outside

Condenser insulation 19mm thermal insulation on condenser Condenser protection

Condenser and cooler with dual safety

Dual safety valves Easy maintenance
valves configuration

Reducing refrigerant loss and

Discharge shut off valve Allows referigerant to be stored inside the
eliminating time-consuming transfer
chiller during servicing
procedures

Used for applications with cold water

Control for low condenser Output signal (0-10 V) to control the at the condenser inlet (well water). In
this case the valve controls the water
temperature systems condenser water inlet valve entering temperature to maintain an
acceptable condensing pressure
Remote control module. Additional contacts Easy connection by wired connection
for an extension of the unit control functions
Energy management module (without communication bus). Consist of: to a building management system
- Electrinoc board mounted in the unit
electrical cabniet

Heat exchangers design per ASME VIII Heat exchanger design meet
ASME requirements of American Society of
(minimum water side service pressure to 20 Mechanical Engineers and
bar) different market/customer demands

Meets Australia government pres-

Australia code a. ASME heat exchanger pressure vessel code
sure vessel code
b. Electrical design per Australia requirement
AS 1210 and AS 4343

Flanged evaporator water

Victaulic piping connections with flanged joints Easy installation
connection kit

Flanged condenser water Victaulic piping connections with flanged joints Easy installation
connection kit

9
 Options Description Advantages

Evaporator with reversed

Evaporator with reversed water inlet/outlet Simplification of the water piping
water connection

Condenser with reversed

Condenser with reversed water inlet/outlet Simplification of the water piping
water connection

Two way protocol converter board between

CCN and J-Bus for easy connection to BMS. Easy connection by communication
CCN to J bus gateway Consist of:
- Electronic board mounted in the unit bus to a building management
electrical cabinet system
- Automatic configuration at start up
Two way protocol converter board between
CCN and Lon work for easy connection to Easy connection by communication
BMS. Consist of: bus to a building management
CCN to Lonwork gateway - Electronic board mounted in the unit
electrical cabinet system
- Automatic configuration at start up
Unit equipped with supplementary water
Master/slave operation outlet temperature sensor kit to be field-in- Master/slave control to optimize
stalled allowing master/slave operation of performance of two units in one plant
two units connected in parallel

10.4" Touch Screen Larger colorful TouchScreen Interface Easy operation

Provides a continuous start current without

Soft starter interrupt and inrush. Lower peak start-up current
* Using a soft starter instead of Wye-Delta
starter

Hot gas bypass Extend capacity operating range to

Hot gas bypass mininum load down to 10%
match mininum load requirement

Provide 3 dBA sound attenuation vs std to

Low noise meet low noise application, Innovative Lower operating sound levels
lagging used

Provide 6 to 8 dBA sound attenuation vs

std to meet super low noise application Lower operating sound levels with
Super Low noise * Sound enclosure used waterproof
* Waterproof, rust prevention features

Provide 8 to 10 dBA sound attenuation vs

Ultra Low noise std to meet super low noise application Lower operating sound levels with
* Sound enclosure used waterproof
* Waterproof, rust prevention features

Higher water & rust protection level

IP44 Enclosure IP44 Enclosure(Control box & Terminal box)
for control box & terminal box

Ni charge in factory Unit nitrogen factory charged. Less weight. No refrigerant charged

10
Chiller dimension

700
1

Connection guide
See detail A
S

Water outlet cooler

H
Water inlet cooler

G
R2

I
Water outlet condenser

J
Water inlet condenser

K
100

R 250
F D E
C B
A

500
1
100
40

Sealing gasket Victaulic coupling

Chiller pipe Coupling pipe(Welded
with the customer pipe)
1258
1178

2 2
978

1000
120

Detail A
700

L 689

Model A B C D E F G H I J K L S R

30DWM**2R**2- 3475 1427 3060 911 757 1500 2309 340 387 400 318 3350 DN200 DN200

30DWO**2T**2- 3507 1493 3060 868 757 1700 2449 340 491 360 363 3350 DN200 DN200

30DWP**2V**2- 3824 1507 3360 731 757 2300 2499 340 467 458 339 3650 DN200 DN200
700

Connection guide R1
See detail A
Water outlet cooler
S
H
G

Water inlet cooler

R2
I

Water outlet condenser

J

Water inlet condenser

100

R 250
F D E
C B
A
500

1
40

100

Sealing gasket Victaulic coupling

Chiller pipe Coupling pipe(Welded
with the customer pipe)
2 2
1178
1258

978

1000
120

Detail A
700

L 689

Model A B C D E F G H I J K L S R

30DWPJ*3V**2- 3852 1507 3360 759 757 2300 2499 390 442 458 339 3650 DN200 DN200

Notes: 1.Tolerances on nozzle locations and overall dimensions are ±25mm.

2.Required clearances for maintenance, Recommended space for tube removal(clearance 3350 and 1000 can be either on the right or the left side).
3.The water pipe connector is the Victaulic coupling,the Victaulic and the pipe are supplied with the chiller,the pipe length is 120mm.
4. Above chiller dimension is based on GB pressure vessel heat exchanger design,for the requirements of ASME pressure vessel design etc.,please contact Carrier local agencies.

11
Chiller Basement

C
Square hole 100x100
to be reserverd for fixing bolts
A B

3+

100
3’+

S
Q

350
300
P

R
+2’
4’+
+2
4+
Section diagram for fixing bolts

Electric cabinet side

Chiller outline dimension,
more space needed when buliding chiller base

Model A(mm) B(mm) C(mm) P(mm) Q(mm) R(mm) S(mm)

30DWM**2R**2- 1590 911 3475 1258 100 1427 137

30DWO**2T**2- 1700 868 3507 1258 100 1493 203

30DWP**2V**2- 2300 731 3824 1258 100 1507 217

30DWPJ*3V**2- 2300 759 3852 1258 100 1507 217

Notes:
1.4 bolts used to fix chiller, bolt size M20×300.
2.User can select 1, 2, 3, 4 or 1', 2', 3', 4' as a group to fix bolts.
3. Above chiller dimension is based on GB pressure vessel heat exchanger design,for the requirements of ASME pressure vessel design etc.,please contact Carrier local agencies

Filters are required to be installed in water entering side, and water quality analysis periodically implement.
Water quality should be maintained within the limits indicated in below table.

Water Characteristics Quality Limitation Water Characteristics Quality Limitation

NH3 <2 ppm NO3 <100 ppm

NH4+ <2 ppm Si < 0.1 ppm

Cl2 <1 ppm Al <0.2 ppm

Cl- < 300 ppm Mn <0.1 ppm

H2S* <0.05 ppm Hardness 71.2<…<151.3mg/l CaCO 3

SO42- < 70 ppm Resistance >3000ohm.cm

CO2† <5 ppm Conductivity 200<…<600µS/cm

Fe2+ /Fe3+ <0.2 ppm Ph 7.5<…<9

O2 < 5 ppm

12
Guide Specifications

Applied Water-Cooled Screw Chiller

HVAC Guide Specifications — 30DW

Size Range: 270 to 350 Tons (949.5 to 1230.9 kW) Nominal

Carrier Model Number: 30DW

Part 1 — General

1.1 SYSTEM DESCRIPTION

Factory assembled 30DW water-cooled liquid chiller. Contained within the unit shall be all factory wiring, piping, controls, refrigerant-
charge (HFC-134a), refrigeration circuits set, 06WW screw compressor, electronic expansion valves and equipment required prior to field
start-up.

1.2 QUALITY ASSURANCE

A. Chiller performance shall be rated in accordance with the latest edition of AHRI Standard 550/590 (I-P), AHRI Standard 551/591 (SI)
and GB/T 18430.1.
B. Cooler and condenser refrigerant side shall include nameplate certifying compliance with NB/T 47012, pressure vessels for refrigerant
equipment.
C. Chiller shall be designed and constructed to TSG 21-2016 requirements.
D. The chiller shall be factory wired and tested to verify proper operation prior to shipment.
F. Unit shall be designed, manufactured and tested in a facility with a quality management system certified ISO 9001 and environmental
management system ISO 14001.
G. Unit components shall be capable of withstanding -20~+50 degC storage without damage, failure, refrigerant loss, or safety risks.

1.3 DELIVERY, STORAGE AND TRANSPORT

A. Unit shall be stored and transported in accordance with the manufacturer's instructions.
B. Unit shall be shipped with all refrigerant piping and control wiring factory installed.
C. Unit shall be shipped with the wooden or the thermoplastic and wooden base package.
D. Unit shall be shipped with firmly attached labels that indicate name of manufacturer, chiller model number, chiller serial number, and
refrigerant used.
E. If the chiller is to be exported, the unit shall be sufficiently protected from the factory against sea water corrosion to be suitable for
shipment in a standard ocean shipping container.

1.4 WARRANTY

Warranty shall include parts and labor for one year after start-up or 18 months from shipment, whichever occurs first.

Part 2 — Products

A. Compressor:

Unit shall have a semi-hermetic twin-screw compressor with high efficiency and low noise.
All compressor components are easily accessible on site minimizing down-time.

A.1 Motor:

Induction Motor shall be optimized for water cooled chiller specifically to ensure chiller operate efficiently at full and partial load.
Motor shall be cooled by suction gas and protected by internal winding temperature sensors.
Motor shall directly drive compressor rotors to lower the failure rate and enhance reliability.
Ceramic terminal pins are applied on this compressor to greatly guarantee security.

13
Guide Specifications

A.2 Rotor:

New lobes combination rotor design shall improve the efficiency and shrink the outer size of the rotor case and other cases.

A.3 Motor Bearings:

Motor bearings and lubrication system are optimized to make sure the system’s reliability. Compressor bearings shall be designed for
minimum 73000 hours at maximum operating conditions.

A.4 Slide Valve Load Control System:

Slide Valve shall be quick load and unload speed with stepless regulation thanks to the capacity loading system.

B. Cooler and Condenser:

1. Unit shall be equipped with a single cooler and condenser.

2. Cooler and condenser shall be manufactured, tested and stamped in accordance with the NB/T 47012 or ASME Pressure vessel
code VIII.
3. The refrigerant-side design pressure will be 1600kPa, and the waterside pressure will be 1000kPa (1600kPa, 2068kPa as options).
4. The cooler and condenser shall be mechanically cleanable, shell-and-tube type with removable heads. Cooler shell shall be insulated
with 19mm (38mm as optional) closed-cell foam and factory fitted.
5. Tubing shall be copper, high-efficiency type, with integral internal and external enhancement unless otherwise noted. Tubes shall be
nominal 19.0mm OD or 25.4mm OD with nominal wall thickness of 0.635mm measured at the root of the fin at the enhanced areas.
6. The cooler and condenser shall have a drain and vent in each head.
7. Each cooler and condenser shall be separately equipped with one relief valve (two valves as optional).
8. Cooler and condenser shall have water inlet & outlet connection with Victaulic couplings to avoid vibrations transmission and accept
small misalignment (water connection kit on demand).
9. Cooler shall be fitted with electronic auto setting water flow switch.

C. Refrigerant Flow Control:

To improve part load efficiency, liquid refrigerant shall be metered from the condenser to the cooler using electronic expansion valve to
maintain the proper liquid level of refrigerant in the heat exchangers under both full and part load operating conditions.

D. Controls, Protections and Diagnostics:

D.1 Controls:

a. The chiller shall be provided with a factory installed and wired microprocessor controller. The controller shall include a 7” o r 10.4”
colorful touch screen, one basic SIOB, one TCPM board, one AUX board and one optional SIOB for energy managing module per
system requirements. The controller can be configured in both Imperial and Metric units.

b. All chiller and compressor parameters shall be displayed on the Carrier SmartView® touch screen.

c. The controller shall use the non-volatile memory as the storage device.

d. The chiller control system shall have the ability to interface and communicate with the building management system. The protocol is
BACnet / IP or Modbus / IP.

e. The screen shall contain following information:

1) Date and time
2) Synoptic screen and button
3) Main Menu button
4) User Login screen and button
5) Alarm menu and button

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Guide Specifications

6) Setpoint
7) Evaporator pressure
8) Evaporator saturated temperature
9) Condenser pressure
10) Condenser saturated temperature
11) Entering chilled water temperature
12) Leaving chilled water temperature
13) Entering condenser water temperature
14) Leaving condenser water temperature
15) Chiller capacity
16) Chiller running status

f. Schedule Function:
The chiller controller can be configured as manual or automatic start-stop mode. In automatic operation mode, the controls shall be
capable of automatically starting and stopping the chiller according to a stored user programmable occupancy schedule. The controller
shall include the logics in terms of below:
1) 365-day occupancy schedules.
2) Minimum of 8 separate occupied/unoccupied periods per day.
3) Daylight savings start/end date.
4) 16 user-defined holidays.

g. Service Function:
The controls shall provide a password protected service function which allows authorized individuals to view an alarm history file which
shall contain the last 20 alarm/alert messages with time and date stamp. These messages shall be displayed in text form, not codes.

h. Network Window Function:

Each chiller control panel shall be capable of viewing multiple point values and statuses from other like controls connected on a common
network, including controller maintenance data. The operator shall be able to alter the remote controller’s set points or time schedule and
to force point values or statuses for those points that are operator forcible. The control panel shall also have access to the alarm history
file of all like controllers connected on the network.

i. Pump Control:
Upon request to start the compressor, the control system shall start the chilled water pump, condenser water pumps and verify that flows
have been established.

j. Chilled Water Reset:

The control center shall allow reset of the chilled water temperature set point based on any one of the following criteria:
1) Chilled water reset based on an external 4 to 20 mA signal.
2) Chilled water reset based on a remote temperature sensor (such as outdoor air).
3) Chilled water reset based on water temperature rise across the evaporator.

D.2 Protections:

a. Unit shall automatically shut down when any of the following conditions occur: (Each of these protective limits shall require manual
reset and cause an alarm message to be displayed on the control panel screen, informing the operator of the shutdown cause.)
1) Transducers and thermistors failure
2) Low evaporator refrigerant temperature
3) High compressor discharge temperature
4) High discharge superheat temperature
5) Low discharge superheat temperature
6) High Pressure Switch Failure
7) Cooler water flow Switch failure
8) Condenser water flow switch failure
9) Compressor motor starter fault

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Guide Specifications

b. Compressor shall automatically shut down when any of the following conditions occur: (Each of these protective limits shall cause an
alarm message to be displayed on the control panel screen, informing the operator of the shutdown cause.)
1) Compressor related transducer failure
2) High motor temperature
3) Motor over current
4) Low Suction pressure.
5) High Discharge Pressure

c. Internal built-in protection device shall protect the chiller from low water flow rate. Flow switch option is supplied by chiller manufacturer.

d. Unit shall automatically protect the evaporator water freeze.

D.3 Diagnostics and Service:

A self-diagnostic controls test shall be an integral part of the control system to allow quick identification of malfunctioning components.
Once the controls test has been initiated, all pressure and temperature sensors shall be checked to ensure they are within normal operat-
ing range. A chilled pump test shall energize the chilled water pump, and the control system shall confirm that water flow have been
established and require operator confirmation before proceeding. Perform the condenser water pump test in this way, too.

In addition to the automated controls test, the controls shall provide a manual test which permits selection and testing of individual control
components and inputs. A thermistor test and transducer test shall display on the Touch Pilot touch screen the actual reading of each
transducer and each thermistor installed on the chiller. All out-of-range sensors shall be identified.

Carrier Smart Service (optional) based on “Big Data Processing” provides value added customer service such as online data management
and analysis, daily and key performance reports, prognostics and preventative maintenance and graphic data trend. The enhanced data
management and analysis will help achieve continuous optimization of the chiller and system operation.

D.4 Multiple Chiller Control:

The chiller controls shall be supplied with two chiller lead/lag system. The control system shall automatically start and stop a lag or second
chiller on a two-chiller system.

E. Electrical

1. Unit shall operate on 3-phase power supply without neutral.

2. Power connection shall be single point to a factory-mounted disconnect switch.
3. Without disconnect switch is optional, in this case, main power circuit equips fuses and indicator lights on each phase.
4. Control voltage shall be supplied by a factory-installed transformer.
5. Each compressor is equipped with starter and motor protection device.
6. Each unit is equipped with emergency stop button, and the main contactor is open when the emergency stop button is pressed.
7. Unit shall have a factory installed star/delta starter as standard to limit electrical inrush current.

F. Start-up:

1. The chiller manufacturer shall provide a factory-trained representative, employed by the chiller manufacturer, to perform the start-up
procedures as outlined in the Installation, Operation and Maintenance manual provided by the chiller manufacturer.
2. Manufacturer shall supply the following literature:

a. Installation, operation and maintenance instructions.

b. Field wiring diagrams.
c. One complete set of pressure vessel assemble-built drawings.

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Guide Specifications

G. Special Features:

1. Carrier Comfort Network (CCN): The chiller can controlled by commands from the Carrier Comfort Network. In this case a data commu-
nication cable is used to connect the unit to the CCN communication bus.

2. Hot Gas Bypass Option

HGBP option enable the system operate at lower load by bypassing expansion valve so that the chiller minimum cooling capacity shall be
extended.

3. Thermal Insulation:
Unit manufacturer shall insulate the cooler shell, cooler tube sheet, suction piping, water box, compressor, copper lines. Insulation shall
be 19 mm or 38mm.

4. Cooler and Condenser Passes:

Unit manufacturer shall provide the cooler and/or condenser with 2 or 3 pass configuration on the water side.

5. Nozzle-In-Head:
Unit manufacturer shall furnish nozzle-in-head style waterboxes on the cooler and/or condenser rated at 1034 kPa(1600kPa,2068 kPa as
optional)

6. Flanged Water Nozzles:

Unit manufacturer shall furnish optional flanged piping connections on the cooler and/ or condenser.

7. EMM
The Energy management is a standard function for 30DW unit. This functionality provides additional inputs and outputs for further informa-
tion and switch controls.

It offers:
2 additional Analogic inputs:
- Space temperature for reset control (A13 SIOB-AI01)
- Capacity limit control (A13 SIOB-AI10)

1 additional Analogic output:

- Chiller capacity running output (A13 SIOB-AO01)

3 Customer Digital inputs:

- Occupancy override switch: In Remote mode closing this switch set occupancy to yes. (A13 SIOB-DI01)
- 2nd capacity limit switch: In remote mode enable the 2nd capacity limit setpoint (A13 SIOB-DI02)
- Customer Remote interlock: closing this input creates an alarm and stops the unit. (A13 SIOB-DI03)

3 Digital outputs:
- Circuit A running status: should be closed if compressor A is running.( A13 SIOB-DO01)
- Chiller alert status: should be closed if chiller alert generated.( A13 SIOB-DO05)
- Chiller shut down status: should be closed if chiller is shut down.( A13 SIOB-DO06)

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The Manufacturer reserves the right to change any produt specifications without prior notices Version: CAT_30DW_E_202008-03

Supersede: CAT_30DW_E_1907-02

Effective Date: Aug, 2020