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