air-cooled screw liquid chiller

YGAS Series

2

Nomenclature

YG A S XXX S A E 50 S A

YORK chiller

Air-cooled chiller

Screw compressor

Nominal Capacity (TR)

Liquid Chiller

Refrigerant: HFC-134a

Power: 50=380V-3P-50Hz 53=400V-3P-50Hz 55=415V-3P-50Hz

Design Level: A

S=Standard fanH=High pressure fan

Power: 50=380V-3P-50HZPower: 53=400V-3P-50HZPower: 55=415V-3P-50HZ

E: ARI design

General YORK YGAS series chillers are manufactured to the highest design and construction standards to ensure high performance, reliability and adaptability for all types of air conditioning installations.

The units are designed for water cooling and to be located outside on the roof of a building or at ground level.

The unit may contain one, two, or three refrigerant circuits. The units are completely factory-assembled with all interconnecting refrigerant piping and internal wiring, ready for field installation.

SpecificationPrior to delivery, the unit is pressure tested, evacuated, and fully charged with refrigerant and lubrication oil. After assembly, an operational test is performed with water flowing through the cooler to ensure that each refrigerant circuit operates correctly.

The unit structure is fabricated with heavy gauge, galvanized steel, which is coated with “Champagne” baked-on polyester powder paint.

3

CompressorsThe unit has accessible, direct drive semi-hermetic rotary twin-screw compressor(s). All rotating parts are statically and dynamically balanced to ensure high operational efficiencies and reliable performance. Stepless capacity control is achieved between 25% and 100% of full capacity for each compressor by regulating slide valve to fulfill the cooling load requirements.

Motor - Motor cooling is provided by suction gas from the evaporator flowing across the motor. Redundant overload protection is provided using both internal thermistor and current overload protection on all three phases.

Rotors -The rotors are housed in a cast iron compressor housing precision machined to provide optimal clearances for the rotors. Contact between the male and female rotor is primarily rolling on a contact band on each of the rotor’s pitch circle. This results in virtually no rotor wear and increased reliability, a trademark of the screw compressor.

Housing - Cast iron compressor housing precisely machined for optimal clearances and superb efficiency. Entire compressor, from suction to discharge, has a Design Working Pressure (DWP) of 2.1MPa.

Capacity Control - Microprocessor controls the load/unload solenoid valve to drive the valve and achieve stepless and smooth capacity control from 100% to 25% of compressor capacity for each compressor.

Isolation - Each compressor is mounted on isolator pads to reduce vibration transmission to the structure.

EvaporatorThe evaporator is a shell and tube, flooded type heat exchanger. A distributor trough provides uniform distribution of refrigerant over the entire shell length. A baffle plate is located above the tube bundle to prevent liquid refrigerant carryover into the compressor. The evaporator shell of each system contains a refrigerant relief valve. A 40mm diameter sight glass is installed at the appropriate position to allow visual inspection of refrigerant levels.

The design working pressure is 2.3MPa for shell, 1.0MPa for tube side. The refrigerant side has a safety valve with trip pressure of 2.2MPa. The refrigerant side is manufactured and tested in accordance to China National Standard GB151. The removable compact water boxes are fabricated from steel. The design working pressure is 1MPa and the boxes are tested at 1.25MPa. Integral steel

water baffles provide the required pass arrangements. Stub-out water nozzle connections with flanges are welded to the water boxes. These nozzle connections are suitable for corresponding flanges, and are capped for shipment. Plugged 3/4”NPT drain and vent connections are provided in each water box. The evaporator shell is insulated with 19mm closed-cell material.

Condenser Coil -The fin and tube condenser coils are manufactured from seamless, internally enhanced, high-condensing coefficient, corrosion-resistant copper tubes arranged in staggered rows and mechanically expanded into corrosion resistant aluminum alloy fins with full height fin collars. The units also adopt Reversed “M” type Coil arrangement to achieve high efficiency heat transfer by optimizing the corner angle of the coils.

A “silent night” mode can be provided by YGAS chiller. Customer can get the lower noise level by timing or manual driving the “silent night” on the control panel. The two speed fans equipped in chiller will switch to low speed automatically.

Fans - The fans are dynamically and statically balanced, direct drive with corrosion resistant glass fiber reinforced composite blades molded into full airfoil cross section, providing vertical air discharge from extended orifices for efficiency and low sound.

Motors - The motors are high-efficiency, direct drive, 6-pole, 3-phase, Class “F”, current overload protected with double sealed, permanently lubricated ball bearings.

Electronic Expansion ValveYGAS series chillers are equipped with advanced electronic expansion valve to ensure accurate control at various load conditions. The electronic expansion valve is able to inject precise amounts of liquid into the evaporators for the system.

The electronic expansion valve modulation is electronically controlled by activation of the AST stepper motor. The motor is a 2-phase bi-polar type, which stays in position unless power pulses from a driver to initiate the two discrete sets of motor stator windings for rotation in either direction. The direction depends on the phase relationship of the power pulses, whose value again is decisive for the travel.

The motor operates the spindle, where rotating movements are transformed into linear motion by the transmission in the cage assembly.

4

Refrigerant CircuitsUnit piping is TP2 copper with brazed joints. The liquid line includes: electronic expansion valve, angle valve, ball valve, sight glass with moisture-indicator, drier filter, etc. The refrigeration system is pressure-tested, leak-tested, and evacuated then charged with refrigerant. The entire suction line and the liquid line between the expansion valve and the cooler, are insulated with flexible, UV stable color coordinated closed-cell, foam insulation.

There are two high pressure sensors, which are equipped to test discharge pressure and oil pressure, and a low pressure sensor, to test the evaporator pressure. High pressure switch and low pressure switch are also installed in the system pipe to protect the compressor.

Oil SeparatorBesides the high efficiency internal oil separation in each compressor, there is an external centrifugal oil separator used to avoid lubrication oil mixing with the refrigerant in the system ensuring maximum heat exchange and compressor lubrication. The external oil separators, with no moving parts and designed for minimum oil carry-over, are mounted in the discharge line of the compressor. DWP of the oil separator can reach 2.26MPa.

The oil flows from the oil separator into the compressor through an oil filter and a solenoid valve at high pressure. This high pressure “oil injection” forces the oil into the compressor, where it is fed to the bearings and rotors for lubrication. After lubricating the bearings, differential pressure causes the oil to be automatically injected through orifices on a closed thread near the suction end of the rotors. It lubricates the rotors as well as provides an oil seal against leakage around the rotors to ensure refrigerant compression efficiency.

Oil EductorOil eductor circuit is provided to properly manage the amount of oil in the evaporator and transfer oil from the evaporator to compressor with the “jet pump” principle. Returning oil to the compressor prolongs its life and also improves the performance of the evaporator.

Oil CoolingOil cooling is provided by routing oil from the compressor through several of the bottom rows of the condenser coils, where it is cooled, then sent back to the compressor.

Power and Control PanelsAll controls and motor starting equipment necessary for unit operation are factory wired and function tested. 1 and 2 circuit units have one control panel respectively, and 3 circuit unit has two control panels (main and auxiliary). The panel enclosures are designed to IP55 and manufactured from powder coated galvanized steel. The surface is painted YORK Champagne.

The control panel is divided into a power and a control compartment. Power and control sections have separate hinge, latch and gasket sealed doors for ease of maintenance and safety of the operators. Each power compartment comprises of compressor starting contactors, control circuit serving compressor capacity control, compressor contactor coils. The compressor motor protection can relay the compressor current to the microprocessor, and it can also protect from phase reversal and lack of phase for compressor power supply. The control section contains microcomputer keypad, HMI and I/O board.

MicroprocessorAll the control logic and devices which are factory wired will be fully tested in the factory. A LCD display screen and user-friendly keypad is mounted in front of the HMI.

The microprocessor-based control center includes the following functions:

LCD Display

The display consists of a liquid crystal 240*128 dot display, with light emitting diode backlighting for outdoor viewing of operating parameters and program points.

5

Flow Switch The design working pressure of target type flow switch is 10.3bar. It is suitable for chilled liquid applications.

Power Supply Option● 380V-3P-50Hz ● 400V-3P-50Hz● 415V-3P-50Hz

Coil Fin Option● Epoxy Coated Aluminum-Ripple Fin

Vibration Isolation Option● Neoprene isolation to provide great performance in

most applications (field mounted) for the Standard Chiller.

● Adjustable spring Isolators. Spring and cage type isolators for mounting under the unit base rails. Deflection may vary slightly by application (field mounted).

OptionsCompressor Suction Service Valve OptionThis option includes a suction service valve in the suction line used to close off the connection between the cooler/evaporator and compressor when required.

Disconnect Switch with Single Power Connection OptionDisconnect switch with single power connection option is available for 2 Circuit Units.

Compressor Acoustic EnclosureThe silencers cotton can be installed outside the compressor and it is made of flexibility acoustic material and can reduce the operation noise effectively.

High Static FansThe unit is capable of choosing a high static pressure fan to be used for some applications that need the duct connection.

Single Water connection For 3 Circuit UnitsThe option provides one water connection for 3 Circuit Units and saves the installation space.

Operation Status Display

Operating data - Includes outlet temperature of chilled water/liquid, ambient temperature, evaporator pressure, discharge pressure, discharge temperature, oil pressure, oil temperature and compressor current etc of system.

Operating fault - When a fault occurs, the unit can self diagnose, display the cause, and send an alarm. The failure alarm history is logged for field troubleshooting.

DI and DO status - Displays the DI (Data Input) and DO (Data Output) status.

System Protection

● No water flow ● Anti-frozen protection ● High/low oil temperature protection ● Oil level switch protection ● High discharge temperature protection ● Low suction pressure protection ● High discharge pressure protection

● Power supply phase reversal, phase imbalance and phase loss protection

● High compressor motor’s current protection● Low water/liquid temperature protection ● Compressor motor overload protection ● Compressor anti-recycle protection ● Fan motor overload protection

The unit also has other control functions such as:

● External interlock with other auxiliary equipment ● Silent mode ● Program start/stop time ● Stepless capacity control ● Pre heating for unit ● Remote ON/OFF ● Smart fan control ● Integration with open MODBUS protocol provides easy

connection to BAS system ● RS-485 standard serial communication ports

6

Chiller Model

Minimum Cooler1 Flow Rate l/s 7.8 10.0 12.5 14.5 17.1 19.4 21.6 25.2 25.2

Maximum Cooler1 Flow Rate l/s 23.3 30.1 37.4 43.4 51.2 58.3 64.9 75.7 75.7

Minimum Cooler2 Flow Rate l/s - - - - - - - - 12.5

Maximum Cooler2 Flow Rate l/s - - - - - - - - 37.4

Operating limitationsYGAS Series Chillers Unit Min. Max.

Leaving Chilled Liquid Temperature °C 4 10

Chilled Liquid Chilled Liquid Temperature Difference °C 3.5 8

Maximum Water Side Pressure bar 10

Ambient Air Air Entering Temperature °C 5 46

Power Supply 380V,3P,50Hz V 342 418

Voltage 400V,3P,50Hz V 360 440

415V,3P,50Hz V 374 457

YG

AS09

0

YG

AS12

0

YG

AS15

0

YG

AS18

0

YG

AS21

0

YG

AS24

0

YG

AS27

0

YG

AS30

0

YG

AS45

0

Cooler water pressure drop

Note:Cooler Water Pressure drop of 3 Circuit Units, YGAS450, is formed respectively by two branches, Coolers of YGAS300/YGAS150. And it’s necessary to balance the pressure of their two branches.

Pressure Drop Calculation:

Pressure Drop [kPa] = a x (Flow Rate [l/s]b),Where parameters a, b can be showed from following list,

Chiller Model Line a b

YGAS090 A 0.5183 1.763

YGAS120 B 0.1530 1.7714

YGAS150 C 0.0993 1.7812

YGAS180 D 0.1501 1.7733

YGAS210 E 0.1189 1.778

YGAS240 F 0.0937 1.7896

YGAS270 G 0.0729 1.799

YGAS300 H 0.0563 1.8057

YGAS450 H 0.0563 1.8057

C 0.0995 1.7812

120

100

80

60

40

20

010 20 30 40 50 60

Pres

sure

dro

p / k

Pa

CD E F GA B

Water flow / L/s

H

7

Physical data

1 Circuit Units Chiller Model for Standard Mode YGAS090 YGAS120 YGAS150Unit Capacity Ton 90.0 118.8 150.0 Qty PCS 1 1 1Compressor Input Power kW 91.1 111.8 151.4 Capacity Control % 25~100 25~100 25~100 Fan Qty PCS 6 8 8

Condenser Fan Motor Power kW 2.45×6 2.45×8 2.45×8 Type — Reversed “M” type Air Flow Rate m3/h 19000×6 19000×8 19000×8 Type — Flooded Cooler Qty PCS 1 1 1Evaporator Water flow rate l/s 15.1 20.0 25.2 Water Pressure Drop kPa 62.4 30.8 31.2 Water Pipe Connection - DN100 DN125 DN125 Refrigerant Charge System 1 - 125 140 150 Refrigerant Charge System 2 kg - - - Refrigerant Charge System 3 kg - - - L mm 3676 4676 5076Dimension W mm 2240 2240 2240 H mm 2456 2456 2456

Weight Shipping Weight kg 4000 4700 5200

Operating Weight kg 4150 4850 5400

2 Circuit Units Chiller Model for Standard Mode YGAS180 YGAS210 YGAS240 YGAS270 YGAS300Unit Capacity Ton 172.0 203.0 231.0 257.0 300.0 Qty PCS 2 2 2 2 2Compressor Input Power kW 184.0 196.6 218.1 252.7 302.8 Capacity Control % 12.5~100 12.5~100 12.5~100 12.5~100 12.5~100 Fan Qty PCS 10 14 16 16 16

Condenser Fan Motor Power kW 2.45×10 2.45×14 2.45×16 2.45×16 2.45×16

Type — Reversed “M” type Air Flow Rate m3/h 19000×10 19000×14 19000×16 19000×16 19000×16 Type — Flooded Cooler Qty PCS 1 1 1 1 1Evaporator Water flow rate l/s 28.9 34.2 38.9 43.2 50.5 Water Pressure Drop kPa 58.6 63.3 65.5 63.9 67.0 Water Pipe Connection - DN150 DN150 DN150 DN150 DN150 Refrigerant Charge System 1 kg 100 110 130 140 160 Refrigerant Charge System 2 kg 100 130 130 130 160 Refrigerant Charge System 3 kg - - - - - L mm 5938 8176 9200 9600 10000Dimension W mm 2240 2240 2240 2240 2240 H mm 2456 2456 2456 2456 2456

Weight Shipping Weight kg 7000 8250 9050 9500 9950

Operating Weight kg 7150 8400 9300 9750 10250

1 circuit units

2 circuit units

Note: Cooling capacities in kW at 7°C leaving liquid temperature and 35°C ambient temperature.

8

3 Circuit Units Chiller Model for Standard Mode YGAS450Unit Capacity Ton 450.0 Qty PCS 3Compressor Input Power kW 454.2 Capacity Control % 8.3~100 Fan Qty PCS 24

Condenser Fan Motor Power kW 2.45×24

Type — Reversed “M” type Air Flow Rate m3/h 19000×24 Type — Flooded Cooler Qty PCS 2Evaporator Water flow rate l/s 75.7 Water Pressure Drop kPa 67.0 Water Pipe Connection — DN150/DN125 Refrigerant Charge System 1 kg 160 Refrigerant Charge System 2 kg 160 Refrigerant Charge System 3 kg 160 L mm 15276Dimension W mm 2240 H mm 2456 Weight

Shipping Weight kg 15150 Operating Weight kg 15650

Electrical dataMulti Point Input (to each system)

YGAS System Nominal / Amps System Maximum / Amps System Max Start / Amps

Model System(s) 380 V 400 V 415 V 380 V 400 V 415 V 380 V 400 V 415 V

YGAS090 1 182 173 168 239 232 224 438 456 475

YGAS120 1 233 222 215 305 294 284 553 574 596

YGAS150 1 304 289 280 370 355 341 710 718 727

YGAS180 1&2 185 176 171 234 227 219 438 456 475

YGAS210 1 182 173 168 239 232 224 438 456 475

2 233 222 215 305 294 284 553 574 596

YGAS240 1 & 2 233 222 215 305 294 284 553 574 596

YGAS270 1 304 289 280 370 355 341 710 718 727

2 233 222 215 305 294 284 553 574 596

YGAS300 1 & 2 304 289 280 370 355 341 710 718 727

YGAS450 1 & 2 & 3 304 289 280 370 355 341 710 718 727

3 circuit units

9

Power supply connection1 Circuit Units: YGAS090, YGAS120, YGAS150,

ControlSection

PowerSection

Power Section

Protective Earth Protective EarthCircuit Breaker

Control Section

KM3YORK-003

EOEVD

KM1 KM21QF

CTPE PE

N

1MP

T2

Field Connection

WIRE #16AWGCOPPER

WIRE #16AWGCOPPER

Field wiring must also comply with local codes.

Control Section Power Centre

POWER (380/400/415V-3N-50HZ)

WIRE #16AWGCOPPER

Chiller waterflow switch

1QF

PE

13 13 13 13 13 13 13 1 2 3 8 14 11 32N1 N1 N1 N1 N1 N1 N1 N1 34 3533 36 85

Remote stop/start

86 87 88 89

KA7 KA8

Breaker

PE L1 L2 L3

Customer supply

YGAS090SAE \ YGAS120SAE \ YGAS150SAE

Extra inter lockIf no EXT, please short-cut 14 an 13

1. Terminal 86 and 87 are used for PUMP（dry contact output, contact impedance is less than 0.5 Ohm）；

2. Terminal 88 and 89 are used for ALARM（dry contact output,contact impedance is less than 0.5 Ohm）；

10

ControlSection

PowerSection 2

PowerSection 1

Power Section 1

Protective Earth Protective Earth

Protective Earth Protective Earth

Circuit Breaker Circuit Breaker

Power Section 2Control Section

1KM3 2KM3

2KM1 2KM2

YORK-003

YORK-003

1KM2 1KM1

1MP 2MP

2QF

CT1PE PE CT2PE PE

EOEVD

EOEVD

N N

1QF

T2

2 Circuit Units: YGAS180, YGAS210, YGAS240, YGAS270, YGAS300

Field Connection

SYS2 PowerCentre

SYS1 PowerCentre

Customer supply

Customer supply

WIRE #16AWGCOPPER

WIRE #16AWGCOPPER

WIRE #16AWGCOPPER

Chiller waterflow switch

POWER (380V-3N-50HZ)

2QF

PE

Control Center

13 13 13 13 13 13 13 1 2 3 8 14 11 32N1 N1 N1 N1 N1 N1 N1 N1 34 3533 36 85

Remote stop/start

86 87 88 89

KA7 KA8

Breaker

PE L1 L2 L3

Control Transformer is used in chiller.

1QF

PE

Breaker

PE L1 L2 L3

YGAS180SAE \ YGAS210SAE \ YGAS240SAE \ YGAS270SAE \YGAS300SAE \ YGAS450SAE Main Unit

Field wiring must also comply with local codes.

POWER (380/400/415V-3N-50HZ)

Extra inter lockIf no EXT, please short-cut 14 an 13

1. Terminal 86 and 87 are used for PUMP（dry contact output, contact impedance is less than 0.5 Ohm）；

2. Terminal 88 and 89 are used for ALARM（dry contact output,contact impedance is less than 0.5 Ohm）；

11

ControlSection 1

PowerSection 2

PowerSection 1

Power Section 1

Protective Earth Protective Earth

Protective Earth Protective Earth

Circuit Breaker Circuit Breaker

Power Section 2Control Section 1

1KM3 2KM3

2KM1 2KM2

YORK-003

YORK-003

1KM2 1KM1

1MP 2MP

2QF

CT1PE PE CT2PE PE

EOEVD

EOEVD

N N

1QF

T2

3 Circuit Units: YGAS4503 Circuit Units has two panels, a main control panel and an auxiliary control panel, and needs to connect a communication wire between them.

Main control panel:

Field Connection

SYS2 PowerCentre

SYS1 PowerCentre

Customer supply

Customer supply

WIRE #16AWGCOPPER

WIRE #16AWGCOPPER

WIRE #16AWGCOPPER

Chiller waterflow switch

POWER (380V-3N-50HZ)

2QF

PE

Control Center

13 13 13 13 13 13 13 1 2 3 8 14 11 32N1 N1 N1 N1 N1 N1 N1 N1 34 3533 36 85

Remote stop/start

86 87 88 89

KA7 KA8

Breaker

PE L1 L2 L3

Control Transformer is used in chiller.

1QF

PE

Breaker

PE L1 L2 L3

YGAS180SAE \ YGAS210SAE \ YGAS240SAE \ YGAS270SAE \YGAS300SAE \ YGAS450SAE Main Unit

Field wiring must also comply with local codes.

POWER (380/400/415V-3N-50HZ)

Extra inter lockIf no EXT, please short-cut 14 an 13

1. Terminal 86 and 87 are used for PUMP（dry contact output, contact impedance is less than 0.5 Ohm）；

2. Terminal 88 and 89 are used for ALARM（dry contact output,contact impedance is less than 0.5 Ohm）；

12

ControlSection 2

PowerSection 3

Power Section 3

Protective Earth Protective EarthCircuit Breaker

Control Section 2

KM3YORK-003

EOEVD

KM1 KM21QF

CTPE PE

N

1MP

T2

Control Transformer is used in chiller.

Control Section 2

Power Section 3

Circuit Breaker

1QF

WIRE #16AWGCOPPER

2#FLSChiller water flowswitch

XT1

13 13 13 13 13 13 13 1 2 3 8

PE

PE L1 L2 L3

N

N

Copper conductors only.Do not use Aluminum conductors.

Customer supply

Field wiring must also comply with local codes.

POWER (380/400/415V-3N-50HZ)

Auxiliary control panel:

Field Connection

13

1 Circuit Units: YGAS090, YGAS120, YGAS150

Dimensions

Chiller Model Dimensions / mm Qty

A B C D E F G H P Q R mYGAS090 1060 1134 2770 150 3495 3676 760 1000 618 315 615 2YGAS120 1060 1228 3410 150 4493 4676 760 1000 700 304 620 3YGAS150 1260 1628 3810 150 4895 5076 810 1100 700 304 620 3

Control Panel

Control Panel

Water Outlet

Water Inlet

1300

2456

224048 A

BC

E

F

D P

Q R

G H X m

815

6-Ø14 IsolatorMounting Holes

3 2 1

456735

2152

963 1240

YGAS090 VibrationIsolators Distribution

CONT

ROL

PANN

EL

8-Ø14 IsolatorMounting Holes

4 3 2 1

5678663

2152

1040 710 1306.5

YGAS120 VibrationIsolators Distribution

CONT

ROL

PANN

EL

8-Ø14 IsolatorMounting Holes

4 3 2 1

5678760

2152

980 1518.5 1065

YGAS150 VibrationIsolators Distribution

CONT

ROL

PANN

EL

14

2 Circuit Units: YGAS180, YGAS210, YGAS240, YGAS270, YGAS300

Chiller Model Dimensions / mm Qty

A B C D E F G H J K L P Q R m nYGAS180 914 1015 2960 4764 184 5747 5938 760 1020 - - 1120 315 669 4 -YGAS210 1370 2372 4230 7020 184 8015 8176 760 1000 1380 1000 1100 321 675 3 2YGAS240 1405 2232 4625 7511 184 9015 9200 760 1000 1380 1000 1120 337 657 3 3YGAS270 1450 2424 4714 7911 184 9415 9600 810 1000 1430 1100 1120 321 675 3 3YGAS300 1450 2591 5030 8355 184 9815 10000 810 1100 1480 1100 1120 352 748 3 3

Control Panel

Water Outlet

Water Inlet

1300

815

2456

224048 A

B

C

E

FD

P

Q

R

G

KH J X m L X n

10-Ø14 IsolatorMounting Holes

5 4 3 2 1

678910535

2152

880.5 1150 1544 1080

YGAS180 VibrationIsolators Distribution

CONT

ROL

PANN

EL

14-Ø14 IsolatorMounting Holes

7 6 5 4 3 2 1

891011121314713

2152

890 1500 900 1200 7201398.5

YGAS210 VibrationIsolators Distribution

CONT

ROL

PANN

EL

16-Ø14 IsolatorMounting Holes

8 7 6 5 4 3 2 1

910111213141516767

2152

1080 900 1523.6 958 1230 1455970

YGAS270 VibrationIsolators Distribution

CONT

ROL

PANN

EL

8 7 6 5 4 3 2 1

910111213141516

2152

767 1080 900 1550 1600 800 13501014.5

16-Ø14 IsolatorMounting Holes

YGAS300 VibrationIsolators Distribution

CONT

ROL

PANN

EL

16-Ø14 IsolatorMounting Holes

8 7 6 5 4 3 2 1

910111213141516710

2152

1050 1250 955 955 1230 1455876.5

YGAS240 VibrationIsolators Distribution

CONT

ROL

PANN

EL

15

The structure of the unit near the main control panel of YGAS450 Chillers refers to YGAS300 Chiller, and the structure of the unit near the auxiliary control panel of YGAS450 Chiller refers to YGAS150. The total length of YGAS450 is 15,276.

Note:For 3 Circuit Units, YGAS450, there are 16 vibration isolators installed at the base frame of main control panel side (referred to that of YGAS300) and 8 vibration isolators installed in bottom rail of unit frame of auxiliary control panel side (referred to that of YGAS150).

3 Circuit Units: YGAS450

Auxiliary Control Panel Main Control Panel

A B

A

A-A B-B

B

C

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