water-cooled centrifugal chiller

KMC Series

Water-cooled Centrifugal Chiller1795-4923kW(500RT-1400RT)

R-134aR-410A R-22 R-407C

ContentsNomenclature ...................................................................................................................................................................................... 1

Unit features ........................................................................................................................................................................................ 1

Computerized control .......................................................................................................................................................................... 3

General technical data ........................................................................................................................................................................ 4

Electrical data ...................................................................................................................................................................................... 6

Dimension drawing .............................................................................................................................................................................. 7

Electric installation .............................................................................................................................................................................. 8

Product installation .............................................................................................................................................................................. 9

2

KMC Series

Two-stage centrifugal compressor

Unit Features

According to the three-dimensional flow theory and the efficiency of HFC134a

under full load and part load condition to optimize the two-stage centrifugal

compressors. It can obtain the excellent operation performance, and also reduce

the unit operation surge point effectively.

Backward sealed impeller: perfect fluid dynamics model, precisely cast by

aluminum alloy.

Rigid ball bearing: realizes the demand on frequent start-stop.

Semi-hermetic motor: cooled by liquid refrigerant, drop the motor’s running

temperature, increase the efficiency and prolong service life.

KMC-600LR

No mark: standard model; R: total heat recovery D: partial heat recovery; T: nonstandard model

Cooling capacity (RT)

HFC 134a water-cooled centrifugal chiller

Nomenclature

The Von Mises stress analysis result when the second-stage impeller is in

running (side looking)

The Von Mises stress analysis results when the secondary

impeller is in running(section)

The cutaway view of the two-stage centrifugal compressor

Two-stage centrifugal compressor

Power: L: 380V 50Hz; M: 6 kV 50Hz; N: 6.6 kV 50Hz; H: 10 kV 50Hz

KMC-600LR600RT adopts HFC134a 380V voltage water-cooled centrifugal chiller with total heat recovery.

Water-cooled Centrifugal Chiller

Condenser The condenser is modified to make unit’s condensing temperature lower than the

general units and improve the unit efficiency through adopting the shell-and-tube

heat exchanger, and the strengthen pipe with low thread on the internal and external

surface, as well as the unique internal structure.

Multiple selections for startup modeKMC unit can be configured with medium/high voltage starter, meeting the energy-saving

operation need for 6 kV / 6.6 kV / 10 kV power supply voltage. Medium/high voltage starter

install the high voltage load switch with shunt release, high-rupturing high-voltage fuse and

surge arrester to guarantee the safety of high voltage motor’s startup and operation.

Function of high-voltage load switch with shunt release:

1. Provide protection when motor short circuit or overload.

2. Protect the motor effectively.

3. Protect the personal safety and equipment from damage if there is obvious breaking point in

the maintenance.

Economizer, oil cooler and oil return heat exchanger The application of economizer, oil cooler and oil return heat exchanger triad technique

improves the performance and reliability. The “medium pressure flash gas” and the

“medium pressure saturated liquid refrigerant” produced when system operates

can be separated effectively in the economizer,“flash gas” enter into compressor

completing the two-stage compression. The rich-oil state liquid refrigerant which is

from the evaporator is heated to refrigerant vapor and oil in the economizer, then get

back to the compressor oil tank. And the high temperature lubricating oil which is from

the compressor enters into the economizer, cooled to the proper oil temperature firstly.

EvaporatorEvaporator is modified to enhance the heat transfer effect, improve system

evaporation temperature, increase unit cooling capacity and improve the efficiency

of the unit operation. Special technology of spray type internal structure design and

reasonable evaporation space can reduce evaporation resistance. Refrigerant liquid

can complete recycle without additional power by using the refrigerant flow control

circulating pump. The tube cluster in evaporator can fully infiltrated and improve

the heat transfer performance effectively even units are running without precisely

adjusting.

Liquid refrigerant

Compressor suction end

Jet pump

Oil return

Heat exchange

Steam for oil return

(Jet pump power)

Flash economizer

Oil cooler

Compressor exhaustend

Economizer

3

KMC Series

Computerized Control

Microcomputer controllerClimaveneta centrifugal chil ler is equipped with advanced

microcomputer controller and adopting the double CPU core

components to ensure the safe and stable operation of the unit.

Man-machine interfaceTouch screen have its own storage space and a higher reaction rate so that user

can control the unit’s complete operation in a real time. User can make a choice

between Chinese and English language through intuitional operation interface,

just clicking on the picture to operate and set units.

PID control functionMicrocomputer controller adopt advanced PID control function, adjust the unit load automatically according to the water temperature

of chilled water and the target temperature of the whole value, resulting in the water temperature meet demand in the shortest time

and steady the target temperature within ± 0.2℃.

Unit protection functionProtect unit's power supply by the overvoltage, under voltage, three-phase imbalance and phase failure protection, as many as 30

protection function for unit.

Multiple anti-surge functionsAdvanced multiple anti-surge functions for unit. Through a combination of prevention, control and warning to meet the cooling

capacity in the safe operation range.

■　Prevention - Calculating the surge curve accurately, unit can adjust state automatically when the unit operation approximates the

surge curve.

PC

Internet

MODBUS

PLC PLC PLC

■　Control – Adjust the running state in time when the unit appears surge resulting in

controlling the surge occurring effectively.

■　Warning - If unit keep surge for a period of time, it will warn users and carry out the stop action.

Reserve the contact for user■　Reserve the control point of cooling tower fan, cooling water pump and cooled water

pump for user to make the fan and water pump controlled by the unit, optimizing the

user's system.

■　Unit reserves alarm output point to display remote alarm.

■　Reserve a central control connection (Modbus - RTU communication protocol) to make

the unit connection to building control system seamlessly.

Host computer

Expansionmodule

4


500

1759

302

5.82

0.60

303

70

200

354

72

200

3920

2320

2450

2944

1800

9100

10050

450

550

1934

332

5.82

0.60

333

57

200

390

60

200

3920

2320

2450

2944

1800

9600

10550

495

600

2109

363

5.82

0.60

363

57

250

425

60

250

4120

2380

2500

3114

1800

10100

11100

540

650

2285

392

5.82

0.60

393

57

250

461

60

250

4120

2380

2500

3111

1800

10600

11700

585

700

2462

419

5.87

0.60

423

57

250

495

60

250

4120

2380

2500

3111

1800

11200

12350

630

800

2813

483

5.82

0.60

484

69

250

567

72

250

4570

2550

2900

3381

2000

11800

13100

720

900

3165

544

5.82

0.60

544

69

300

638

72

300

4570

2550

2900

3381

2000

12500

14000

810

1000

3516

604

5.83

0.60

605

90

300

709

91

300

4570

2550

2900

3384

2000

13200

14800

900

1100

3868

666

5.8

0.61

665

90

300

780

94

300

4780

2800

2950

3384

2300

14500

16350

990

1200

4220

725

5.82

0.60

726

90

300

851

94

300

4780

2800

2950

3384

2300

15500

17500

1080

1300

4571

784

5.83

0.60

786

114

300

921

118

300

4780

2800

2950

3384

2300

16500

18600

1170

1400

4923

845

5.83

0.60

847

116

300

982

120

300

4780

2800

2950

3384

2300

18000

20000

1260

kW

kW

kW/kW

kW/RT

m3/h

kPa

DN

m3/h

kPa

DN

mm

mm

mm

mm

mm

kg

kg

kg

Unit model KMC

Cooling capacity

Power input

Full load performance

Evaporator

Water flow

Water pressure drop

Inlet/outlet pipe

Condenser

Water flow

Water pressure drop

Inlet/outlet pipe

Dimension

A(Length)

B(Width)

C(Height)

Installation dimension

D

E

Hauled weight

Operating weight

HFC134a Charge

General Technical Data

Note:1. Cooling mode: evaporator inlet/outlet water temp. 12/7℃; Condenser inlet/outlet water temperature 32/37℃2. The standard water side pressure of evaporator and condenser is 1.0MPa, 2.0Mpa as optional.3. Soft starter as optional, please consult local CLIMAVENETA office.4. 6kV/6.6kV/10kV High voltage unit as optional, please consult local CLIMAVENETA office.

5

KMC Series

Electrical Data

500

550

600

650

700

800

900

1000

1100

350

377

408

448

479

550

622

687

764

631

683

741

812

866

996

1121

1249

1379

1036

1048

1060

1140

1209

1381

1640

1830

2072

Low-voltage -380V (Y-delta start)Unit model F.L.I(kW) F.L.A(A) S.A(A)

Note: Starting current is star locked-rotor current of Y-type start condition

800

900

1000

1100

1200

1300

1400

550

622

687

764

832

900

969

63

72

79

87

95

103

112

299

355

397

449

494

524

530

High-voltage -6 kV (directly start)Unit model F.L.I(kW) F.L.A(A) S.A(A)

Note: Starting current is star locked-rotor current of direct start condition

800

900

1000

1100

1200

1300

1400

550

622

687

764

832

900

969

57

65

72

79

87

94

101

272

323

360

408

449

476

513

High-voltage -6.6 kV (directly start)Unit model F.L.I(kW) F.L.A(A) S.A(A)

Note: Starting current is star locked-rotor current of direct start condition

800

900

1000

1100

1200

1300

1400

550

622

687

764

832

900

969

38

42

47

53

57

62

66

193

230

256

290

319

338

346

High-voltage -10 kV (directly start)F.L.I(kW) F.L.A(A) S.A(A)Unit model

Note: Starting current is star locked-rotor current of direct start conditionF.L.I Full load power input at max admissible conditionF.L.A Full load current at max admissible conditionS.A starting current

6


Dimension Drawing

Non-airborne Starter Dimension

Note: 1. The wiring of unit starter is top in top out.2. Waterproof when wire the starter.3. If other inlet/outlet wiring way is needed, please consult local CLIMAVENETA office.

Rated current(A)

<1489

<1454

1489-1600

1454-1600

Width(mm)

850

1100

850

1100

1600

Depth(mm)

600

800

600

800

1000

Height(mm)

2200

2200

2200

2200

2600

Voltage

380V

380V

6kV/6.6kV/10kV

Starter form

Star-delta

Solid soft starter

Directly start/primary side reactance

Evaporator

Economizer

Compressor

Condenser

Hunging lugCoolingwater outlet

Coolingwater inlet

Hunging lug

Chilled water outlet

Chilled water inlet

7

KMC Series

380V centrifugal chiller engineering wiring diagram:

Low-voltage wiring illustration:■　Line① is the power line (three-phase with zero line, ground wire) from customer power distribution cabinet to chiller's power

supply cabinet. Power supply specification is 380 v, 3N -50Hz. Power line enter from the top of power cabinet, wire diameter

requirements adjust with unit power.

■　Line② is the power line from the power cabinet to the centrifugal unit main motor(Y delta start or soft start, 6 power line, with

earth wire). Power line let out from the top of cabinet, wire diameter is determined by unit's power.

■　Line③ is the power line from the power cabinet to the centrifugal unit oil pump control cabinet (three phase), wire diameter

requirement is 2.5mm2 or larger.

■　Line④ is the signal line from the power cabinet to the centrifugal unit master control cabinet, wire diameter requirement is

1.0mm2 or larger.

■　Line⑤ is the signal line from the centrifugal unit master control cabinet to water pump control cabinet and remote switch

machine, wire diameter requirement is 1.0mm2 or larger.

Electric Installation

Note: Water pump control cabinet is provided by customers.Power line and control line need to be controlled separately and can not be set in the same slot.Customer should supply all the line above.

8


6kV/6.6kV/10kV centrifugal chiller engineering wiring diagram:

High-voltage wiring illustration:

■　Line① is the power line from customer high-voltage power distribution cabinet to chiller's power supply cabinet.

Power supply specification is 380V, 3N- 50Hz .Power supply cord enters from the upper end of cabinet, wire

diameter is determined by unit's power.

■　Line② is the power line from the cabinet to the centrifugal unit main motor(Y delta start or soft start, 6 power line,

with earth wire). Power line outlet from the upper end of cabinet, wire diameter is determined by unit's power.

■　Line③ is the power line from the customer to the centrifugal unit control cabinet (three phase , ground wire), wire

diameter requirement is 2.5mm2 or larger. Power supply specification is 380V, 3N- 50Hz. Customers provide this

power supply additionally.

■　Line④ is the signal line from the cabinet to the centrifugal unit master control cabinet, wire diameter requirement is

1.0mm2 or larger.

■　Line⑤ is the signal line from the centrifugal unit master control cabinet to water pump control cabinet and remote

switch machine, wire diameter requirement is 1.0mm2 or larger.

Note: Water pump control cabinet is provided by customers.Power line and control line need to be controlled separately and not allowed set in the same slot.Customer should provide all the line above.

9

KMC Series

Unit lifting drawing:

Product Installation

■　Water-cooled chiller should avoid closing to the fire and flammable.

■　It is better to choose the space where the room temperature is under 45℃ and the ventilation is good (because of high

temperature is the cause of failure and speeds up the corrosion). Relative humidity should be under 90% when environment is

45℃ , and not allowed installed and storage outdoor or open air.

■　Choose the place of less dust (Dust is one of the main reason for the electrical failure).

■　Field should be of good daylighting in order to maintenance and inspection.

■　There shall be a good drainage system around the unit and the entire room.

■　Unit use steel tube to connect the safety valve port to the outside is recommended.

■　In order to ensure safety and health of staff, installing oxygen detector in the room is recommended. Alert when oxygen is

being part consumed or displaced that oxygen content is less than 19.5%.

■　Spring damping device as optional, please consult local CLIMAVENETA office.

10

Climaveneta Italy:36061 BASSANO DEL GRAPPA (VICENZA) ITALIA - VIA SARSON 57/cTEL. +39 / 0424 509 500 (r.a.) - TELEFAX +39 / 0424 509 509E-mail:[email protected] http://www.climaveneta.com

Climaveneta China:No,88 Baiyun Road Xinghuo Developing Zone ,Shanghai,China Post Code:201419TEL: +86-21-57505566 FAX: +86-21-57505797E-mail:[email protected] http://www.climaveneta.com.cn

Climaveneta Hongkong:Room 2003,CCT Telecom Building, 11 Wo Shing Street,Fotan,Shatin,N.T.,HongkongTEL: +852-26871755 FAX: +85-2-26873078E-mail:[email protected] http://www.climaveneta.com

Climaveneta Vietnam:6th Floor, Room 6.6B, Etown2, 364 Cong Hoa Street, Ward 13, Tan Binh District, Hochiminh CityTEL: +848 6262 9966 FAX: +848 6262 9977E-mail: [email protected] http:// www.climaveneta.com

B214 CCU/01-03-2015 EN-SHAll specification and data are subject to change without notice

water-cooled centrifugal chiller

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