PCXZAS16

Cooling Only

105-450TRAir-Cooled Screw Chiller

1

Innovation that delivers solutionsDaikin products offer industry leading result in quality, performance and sustainability. As the designer

Part loading capabilityCompressor capacity adjustment through two axially sliding and asymmetric valves (adopted in most of the screw compressors in the market).

DaikinChiller

Why Daikin Single Screw Compressor?

SLIDE valve (100% of load)

SLIDE valve (part loads)

Gas to suction

2

Zero clearance fit• Close meshing between main rotor & star rotor eliminates leakage

between the high and low pressure sides during compression.• Special gaterotor made from an advanced composite and thermally

stabled material that contributes to zero clearance design.

Balanced force

main rotor

star rotor

close meshing

Stepless energy adjustment

Compressor load100

75

7

Time

Leav

ing

Wat

erTe

mpe

ratu

re (�

C)Co

olin

g(lo

ad (%

)100

75

7

Stepped energy adjustment

Required load

Time

Leav

ing

Wat

erTe

mpe

ratu

re (�

C)Co

olin

g(lo

ad (%

)

• Daikin single screw compressor balances the load completely during

than the industry standard.• The compressor does not come into contact with any metal during

balanced force

Stepless adjustment, high efficiency and energy saving• The advanced efficient single-screw compressor is adopted. The compressor can perform stepless adjustment

within the ran

• The systems can regulate the leaving water tempearture based on the actual cooling load, whether it is running at

level.

3

Minimal moving components• Daikin single screw compressor consists of only 5 moving components, a screw rotor, 2 star wheels

and two energy adjustment slide valves.

• The star wheels made of high strength composite material can ensure the accuracy and the minimum

mechanically expanded into slit aluminium fin with full fin collars.• “W” type coil improves heat transfer efficiency and reduces the unit footprint.

subcool

Enthalpy

{

{

Pres

sure

Built in oil separator

4

DX shell & tube evaporator • Direct expansion type with refrigerant inside the copper tubes, and polypropylene ba es• The copper tubes are roll expanded into carbon steel tube plates• An

• New high efficiency counte ow, with single pass only on refrigerant side (with one or two independent circuits)• High efficiency tube with new geometry allowing

of refrigerant ow• Increased v=essel length without causing additonal refrigerant and water pressure drops

• All condenser fans are helical ty e• Fan blades made from reinforced resin fi erglass, which can

withstand UV and high ambient temperature

fre uencies

High efficiency condensingaxial fan

5

Electronic expansion valve - EXV• Precise control of refrigerant ow• Internal & external corrosion resistant design

Economizer as standard

ity increased due to economizerB: Original capacity without economizerC: Improved capacity with economizerD: Compressor work re

Pres

sure

Enthalpy

With economizer

5 4

7

3’

2

16’

A BC

DF F

F

F

F Pres

sure

Enthalpy

Without economizer

6 1

34

F

F

F

6

Intelligent network controller•

Built-in controller• Control type: PLC programmable

• Screen display: LCD display

• Common fault alarm display• Water temperature control to an accuracy to 0.5˚C• Output load PID control

• Compressor load control

• Stepless load adjustment• Failure history query

MicroTech III

Main Components

7

• Ammeter and voltmeter• High/low pressure gauge

• External control panel

• Unit status• Temperature of inlet/outlet water• Compressor status

• Opening of electrical expansion valve• Oil pressure• Ambient temperature

– To chiller sequencing panel – To BMS or Plant Visor (for monitoring only)

• Siemens (Apogee and Design) • Johnson Control• Honeywell• Invensy (TAC)

Supported Protocols:• LON• BACnet/IP• BACnet/MSTP• ModBusRTU• IP (Internet Protocol)

8

Daikin Single-Screw (Cooling Only)

USRTkW

kWx 10 kcal/h

Power SupplyCapacity Steps

Refrigerant

Refrigerant Oil

TypeCircuit No.Flow Control

Type

Type

Type

Air FlowMotor Power InputTypeWater Flow RateWater Resistance

Maximum Pressure-bearingLengthWidthHeightTransport

StartupCooling

Compressor

Condenser

Fan

Evaporator

Unit Dimensions

Weight

Standard Accessories

The transport weight including steel packaging weight The operaton weight including the weight of the water inside water-side heat exchanger, excluding steel packaging weight

Model Unit UAA

Nominal Cooling Capacity

Compressor Power Input (Cooling)

125ST3M

22

150ST3M 175ST3M 204ST3M 220ST3M

380-415V/3N~/50Hz10%~100%

R134a1

EXV28

1Star delta

ossed fin and tu e

fficient s i al a ial fan

Shell and tube heat exchanger

1.0

22602435

105ST3M

37010532

103.5

44912839

122.5

58616750

158.7

66318957

177.3

71720462

192.1

80222869

214.6

610.812.0

814.416.0

1018.020.0

1221.624.0

1221.624.0

1425.228.0

3570 4470 5380 6280 6280 7180

28802950

36303740

45604700

49305100

50505300

56905940

6458

4

7775

10168

5

11470

12376

6

13862

L

n

kWx 10 m³/h

m³/hkPa

mPammmmmmkgkg

inch

USRTkW

kW

STM3

x 10 kcal/h

Power SupplyCapacity Steps

Refrigerant

Refrigerant Oil

TypeCircuit No.Flow Control

Type

Type

Type

Air FlowMotor Power InputTypeWater Flow RateWater Resistance

Maximum Pressure-bearingLengthWidthHeightTransport

StartupCooling

Compressor

Condenser

Fan

Evaporator

Unit Dimensions

Weight

Model Unit UAA

Nominal Cooling Capacity

Compressor Power Input (Cooling)

291ST3M

22+22

348ST3M 380ST3M 400ST3M 450ST3M

380-415V/3N~/50Hz5%~100%

R134a2

EXV22+28

2Star delta

ossed fin and tu e

fficient s i al a ial fan

Shell and tube heat exchanger

1.0

22602435

245ST3M

89825577

245.0

103529489

281.2

1172333101

317.4

1326377114

354.6

1434408123

384.2

1604456138

429.2

1628.832.0

1832.436.0

2036.040.0

2443.248.0

2443.248.0

2850.456.0

8660 9560 10490 12290 12290 14090

72207480

80308340

88209120

95709950

980010320

1118011690

15472

6

17874

20278

22883

247618

27679

L

n

kWx 10 m³/h

m³/hkPa

mPammmmmmkgkg

inch

Standard Accessories

ST3M

15

Specifications, designs and other content appearing in this brochure are current as of March 2016 but subject to change without notice.

Dealer

All rights reserved c

Umeda Center Bldg., 2-4-12, Nakazaki-Nishi,Kita-ku, Osaka, 530-8323 Japan.

Head office:

Lot 60334, Persiaran Bukit Rahman Putra 3,Taman Perindustrian Bukit Rahman Putra,47000 Sungai Buloh, Selangor Darul Ehsan, Malaysiawww.daikinmalaysia.com