ATTCH__Carrier_chiller_specs.pdf

Copyright 2010 Carrier Corporation Form 30HX-10PD

Water-cooled and condenserless chillers designed from the ground up to meet the needs of today and tomorrow:

• Unit fits through a standard door with no disassembly required

• Chlorine-free HFC-134a refrigerant

• Dual independent refrigerant circuits

• Smooth compression using twin screw compressors

• AHRI certified IPLV efficiencies to

0.51 kW/ton

Features/Benefits Quality design and construction make the 30HXC (water-cooled) and 30HXA (condenserless) units the preferred chillers.

Easy installation The 30HX chiller has a compact de-sign that fits through a standard door opening and requires minimal indoor space. The 30HX chiller is delivered as a complete package for easy installa-tion. There are no extra controls, clocks, starters, or other items to install.

The 30HX unit also provides a sin-gle location electrical power entrance (using the accessory field-installed con-trol power transformer) and quick, easy piping (using victaulic-type clamp-on couplings).

The 30HX 208/230-v, 230-v, 460-v and 575-v 60 Hz units are designed in accordance with UL (Underwriters Laboratory, U.S.A.) and UL, Canada (Underwriters Laboratory, Canada) standards to minimize electri-cal inspection time.

EVERGREEN®

30HXA,HXC076-271

Condenserless and Water-Cooled

Liquid Chillers with COMFORTLINK™ Controls

50/60 Hz 75 to 265 Nominal Tons

(264 to 931 kW)

Product Data evergrn

Run Status

Service Test

Temperatures

Pressures

Setpoints

Inputs

Outputs

Configuration

Time Clock

Operating Modes

Alarms

ENTER

E S C

M O D E Alarm Status

TIME

EWT

LWT

SETP

1 2 . 5 8 5 4 . 6 F 4 4 . 1 F 4 4 . 0 F

N A V I G A T O R ™

Co m f o r t Li n k

A quick start-up is assured once in-stallation is complete, since each 30HX unit is manufactured at an ISO (International Organization for Stan-dardization) 9001:2000 listed manu-facturing facility to guarantee quality.

In addition, all 30HXC units are tested under load at the factory to provide re-liable start-up.

NOTE: The 30HXC units shipped with optional nitrogen charge are tested for proper operation of the electrical com-ponents but are not run-tested at the factory.

Easy operation The 30HX units have a quiet, low-vibration design featuring screw compressors.

Efficiency levels of the 30HX units meet or exceed energy efficiency re-quirements of ASHRAE (American Society of Heating, Refrigeration and Air Conditioning Engineers) 90.1 and CSA (Canadian Standards Association) for both full load and part load operation, thus saving on operating costs through lower electrical costs.

All 30HX units are also rated in accor-dance with AHRI (Air Conditioning, Heating, and Refrigeration Institute, U.S.A.) standards. The 60 Hz 30HXC units are AHRI certified.

The 30HX controls are fully auto-matic. The leaving-fluid temperature is directly controlled to within .5° F (.3° C), and the entering-fluid tempera-ture is continuously monitored to detect load and flow changes.

Dual, independent refrigerant cir-cuits provide reliable, dependable cool-ing, and the 30HX units use medium-pressure HFC-134a refrigerant to minimize stress on the compressors and ensure a long life.

From a service standpoint, the 30HX units offer the following features:

• Use of HFC-134a refrigerant, which has no planned phase-out in its future

• Mechanically cleanable cooler and condenser (30HXC units)

• Twin-screw compressors, which require no routine service or maintenance

• Easily accessed service information includes suction and discharge pressure and temperature using standard Navigator™ display module

• All parts are available through Totaline parts stores.

ComfortLink™ controls ComfortLink controls allow simple and easy interface to chillers with out-standing performance and value. The 30HX liquid chillers employ more than the latest advanced microprocessor controls, they utilize an expandable platform that can adjust as needs change. ComfortLink controls are used in diverse applications from stand-alone operation to remotely monitored and operated multi-chiller plants.

ComfortLink controls are fully com-municating, and are cable ready for connection to a Carrier Comfort Net-work® (CCN) system. Occupancy scheduling, temperature and pressure read-outs, optional sensors, and the ComfortLink scrolling marquee clear language display features provide a connection to a world of carefree comfort.

Features/Benefits (cont)

Run Status Service TestTemperaturesPressures

Setpoints Inputs

Outputs ConfigurationTime Clock

Operating ModesAlarms

ENTER

E S C

M O D E Alarm Status

TIMEEWTLWT

SETP

1 2 . 5 85 4 . 6 F4 4 . 1 F4 4 . 0 F

N A V I G A T O R

Co m f o r t Li n k

DUAL INDEPENDENT

REFRIGERANT CIRCUITS

NAVIGATOR IN DISPLAY MODETWIN-SCREW

COMPRESSOR DESIGN

Run Status

Service Test

Temperatures

Pressures

Setpoints

Inputs

Outputs

Configuration

Time Clock

Operating Modes

Alarms

ENTER

E S C

M O D E Alarm Status

TIME

EWT

LWT

SETP

1 2 . 5 8 5 4 . 6 F 4 4 . 1 F 4 4 . 0 F

N A V I G A T O R ™

Co m f o r t Li n k

FITS THROUGH

STANDARD DOORWAY

Features/Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1,2 Model Number Nomenclature AHRI Capacity Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4,5 Physical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-9 Options and Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10,11 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-21 Application Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22-29 Selection Procedure Performance Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31,32 Typical Piping and Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33,34 Typical Control Wiring Schematic Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36-47 Controls Guide Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49-51

Model number nomenclature

Table of contents

LEGEND

FIOPS — Factory-Installed Options

Quality Assurance Certified to ISO 9001:2000 a30-4646

30HXC WATER-COOLED CHILLER ARI RATINGS (60 Hz ONLY)

LEGEND

*Air Conditioning, Heating, and Refrigeration Institute (U.S.A.).

†IPLV shown is the lower of Sequence A or Sequence B unloading.

NOTES:

1. Rated (60 Hz only) in accordance with AHRI Standard 550/590 at standard rating conditions.

2. Standard rating conditions are as follows:

Cooler Conditions:

Leaving Water Temperature: 44 F (6.7 C) Flow: 2.4 gpm per ton (0.043 L/s per kW)

Condenser Conditions:

Entering Water temperature: 85 F (29.4 C) Flow: 3.0 gpm per ton (0.054 L/s per kW)

Fouling Factor (Cooler):

0.00010 hr x sq ft x F per Btuh (0.000018 m2 x K per W)

Fouling Factor (Condenser):

0.00025 hr x sq ft x F per Btuh (0.000044 m2 x K per W)

3. IPLV is a single number part-load efficiency value calculated using the efficiency values at 100%, 75%, 50%, and 25% of load when the chiller is operating at ARI conditions.

4. All data in this table is rated (60 Hz only) in accordance with AHRI Standard 550/590 as represented in the Chiller Selection Program (E-Cat) version 2.93.

5. Contact Carrier for custom ratings.

UNIT

SIZE

30HXC

CAPACITY INPUT

POWER

(kW)

COOLER FLOW

COOLER

PRESSURE

DROP

CONDENSER

FLOW

CONDENSER

PRESSURE

DROP

FULL-LOAD

EFFICIENCY

(kW/Ton)

IPLV†

(kW/Ton)

Tons Output kW GPM L/s Ft of

Water kPa GPM L/S Ft of Water kPa

076 75.4 265.2 53.7 181.0 11.4 14.5 43.2 226.2 14.3 8.9 26.6 0.712 0.512 086 83.1 292.3 60.4 199.4 12.6 17.2 51.4 249.3 15.7 10.7 31.8 0.727 0.523 096 94.0 330.5 67.0 225.5 14.2 17.0 50.7 282.0 17.8 11.0 32.7 0.713 0.513 106 104.3 366.8 75.3 250.3 15.4 15.4 46.0 312.9 19.7 13.3 39.6 0.722 0.521 116 113.5 399.3 83.2 272.5 17.2 13.3 39.8 340.6 21.5 17.0 50.6 0.733 0.509 126 122.9 432.1 92.2 295.2 18.6 15.4 45.9 369.0 23.3 19.6 58.5 0.751 0.530 136 136.5 479.9 97.0 327.5 20.7 14.6 43.7 409.4 25.8 18.5 55.1 0.711 0.541 146 145.9 513.2 105.1 350.2 22.1 16.5 49.3 437.8 27.6 20.9 62.4 0.720 0.533 161 156.5 550.6 111.7 375.5 23.7 13.7 40.9 469.6 29.6 21.3 63.6 0.714 0.520 171 165.9 585.3 118.2 398.1 25.1 15.2 45.4 497.6 31.4 17.2 51.4 0.712 0.538 186 177.2 623.1 126.7 426.2 26.8 13.9 41.5 531.6 33.5 19.5 58.1 0.715 0.562 206 211.5 744.0 146.4 507.7 32.0 14.7 43.9 634.7 40.0 20.9 62.4 0.692 0.510 246 248.6 874.1 172.4 596.5 37.6 16.2 48.3 745.7 47.0 21.9 65.2 0.693 0.522 261 257.2 904.6 180.5 617.3 38.9 17.2 51.4 771.6 48.7 23.3 69.5 0.702 0.523 271 267.4 940.3 189.5 641.7 40.5 18.5 55.1 802.1 50.6 25.1 74.7 0.709 0.525

IPLV — Integrated Part-Load Value

60 Hz only

AHRI* capacity ratings

30HXA CONDENSERLESS CHILLER RATINGS (60 Hz ONLY)

NOTES:

1. Rated (60 Hz only) in accordance with AHRI Standard 550/590 at standard rating conditions.

2. Standard rating conditions are as follows:

Cooler Conditions:

Leaving Water Temperature: 44 F (6.7 C) Flow: 2.4 gpm per ton (0.043 L/s per kW) Saturated Discharge Temperature: 125 F (52 C)

Fouling Factor (Cooler):

0.00010 hr x sq ft x F per Btuh (0.000018 m2 x K per W)

3. All data in this table is rated (60 Hz only) in accordance with AHRI Standard 550/590 as represented in the Chiller Selection Program (E-Cat) version 2.93.

4. Contact Carrier for custom ratings.

09DK CONDENSER RATINGS (60 Hz ONLY)

NOTE: Rated in accordance with AHRI standard 460 at standard rating conditions.

• 125 F (52 C) Condensing Temperature

• R-134a Test Fluid

• 15° F (8.3° C) Subcooling

• 95 F (35 C) Entering Dry Bulb Temperature

UNIT

SIZE

30HXA

CAPACITY INPUT

POWER

(kW)

COOLER FLOW

COOLER

PRESSURE

DROP

FULL-LOAD

EFFICIENCY

(kW/Ton) Tons Output kW GPM L/s Ft of Water kPa

076 67.7 237.9 76.2 162.4 10.2 11.9 35.6 1.127 086 76.0 267.2 84.5 182.3 11.5 14.7 43.8 1.112 096 85.8 301.9 95.1 206.0 13.0 14.4 43.1 1.108 106 96.9 340.9 106.9 232.7 14.7 13.5 40.3 1.103 116 104.9 368.9 115.0 251.8 15.9 11.6 34.6 1.097 126 113.9 400.6 125.4 273.4 17.2 13.4 40.1 1.101 136 127.0 446.5 138.5 304.7 19.2 12.9 38.4 1.091 146 137.2 482.5 150.0 329.3 20.8 14.8 44.1 1.094 161 147.3 518.1 159.9 353.6 22.3 12.3 36.7 1.086 171 159.0 559.3 173.8 381.7 24.1 14.1 42.1 1.093 186 174.3 612.8 192.7 418.2 26.4 13.5 40.3 1.106 206 198.5 698.2 216.4 476.5 30.1 13.1 39.2 1.090 246 231.9 815.4 252.4 556.5 35.1 14.3 42.7 1.089 261 244.1 858.6 267.5 585.9 37.0 15.7 46.8 1.096 271 257.9 907.0 283.9 619.0 39.1 17.3 51.6 1.101

UNIT

SIZE

09DK

HP TONS BTUH BTUH/HP

044 3.0 54.6 655,200 218,400 054 4.0 64.1 769,200 192,300 064 4.0 76.6 919,200 229,800 074 6.0 93.0 1,116,000 186,000 084 6.0 100.9 1,210,800 201,800 094 6.0 113.3 1,359,600 226,600

ENGLISH

LEGEND

*Charges listed are for 30HXC units. The 30HXA units are shipped with a nitrogen holding charge only. To determine the refrigerant charge requirements for 30HXA units see the System Refrigerant Charge for Start-Up table in the Application Data on page 29.

†Only on units with factory-installed suction service valves.

UNIT SIZE 30HX 076 086 096 106 116 126 136 146

UNIT OPERATING WEIGHT (lb)

Water-Cooled (HXC) 5700 5723 5855 6177 6415 6465 6688 6718 Condenserless (HXA) 4717 4744 4835 5151 5163 5205 5309 5333

COMPRESSORS Semi-Hermetic, Twin Screw Quantity 2 2 2 2 2 2 2 2 Nominal Capacity per Compressor (tons) 39/39 46/39 56/39 66/39 66/46 66/56 80/56 80/66 Economizer No No No No No No No No No. Capacity Steps

30HXC Unit 6 6 6 6 6 6 6 6 30HXA Unit (maximum on 30HXC unit with factory-installed option) 8 8 8 8 8 8 8 8

Minimum Step Capacity (%) 30HXC Unit 20 20 20 20 20 20 20 20 30HXA Unit (30HXC unit with factory-installed option) 10 10 10 10 10 10 10 10

REFRIGERANT R-134a Charge* (lb) Circuit A/Circuit B 75/75 76/75 94/70 110/70 112/89 112/89 124/89 119/100

COOLER Shell and Tube with Enhanced Copper Tubes Part No. 10HX400- 401 401 402 408 406 406 405 405 Net Fluid Volume (gal) 17.0 17.0 19.0 22.6 21.4 21.4 24.0 24.0 Maximum Refrigerant Pressure (psig) 220 220 220 220 220 220 220 220 Maximum Water-Side Pressure (psig) 300 300 300 300 300 300 300 300 Water Connections

Inlet and Outlet (in.) (Standard Pass) 4 4 4 5 5 5 5 5 Drain (in. NPT) (Standard Pass) 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8

Relief Valve Connection (in. NPTF) 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 Flow Capacity (lb air/min) 31.7 31.7 31.7 31.7 31.7 31.7 31.7 31.7

Relief Setting (psig) 220 220 220 220 220 220 220 220 Standard Number of Passes 3 3 3 3 2 2 2 2

30HXA OIL SEPARATOR

Part No. 09RX400- 217 217 216 216 215 215 215 215 Maximum Refrigerant Pressure (psig) 320 320 320 320 320 320 320 320 Refrigerant Connections (in.)

Discharge Circuit A/B 21/8/21/8 21/8/21/8 21/8/21/8 21/8/21/8 21/8/21/8 21/8/21/8 21/8/21/8 21/8/21/8 Liquid Circuit A/B 11/8/11/8 11/8/11/8 11/8/11/8 11/8/11/8 11/8/11/8 11/8/11/8 11/8/11/8 11/8/11/8

Relief Valve Connection (in. SAE Flare) 5/8 5/8 5/8 5/8 5/8 5/8 5/8 5/8 Flow Capacity (lb air/min) 21.6 21.6 21.6 21.6 21.6 21.6 21.6 21.6

Relief Setting (psig) 320 320 320 320 320 320 320 320 CONDENSER (HXC) Shell and Tube with Enhanced Copper Tubes

Part No. 09RX400- 257 257 258 258 259 259 260 260 Net Fluid Volume (gal) 16.8 16.8 18.3 18.3 23.9 23.9 27.5 27.5 Maximum Refrigerant Pressure (psig) 220 220 220 220 220 220 220 220 Maximum Water-Side Pressure (psig) 300 300 300 300 300 300 300 300 Water Connections (in.) Victaulic Type Connection

Inlet and Outlet (Standard Pass) 5 5 5 5 5 5 5 5 Drain (NPT) (Standard Pass) 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8

Relief Valve Connection (in. NPTF) 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 Flow Capacity (lb air/min) 31.7 31.7 31.7 31.7 31.7 31.7 31.7 31.7

Relief Setting (psig) 220 220 220 220 220 220 220 220 Standard Number of Passes 2 2 2 2 2 2 2 2

DISCHARGE LINE†

Relief Valve

Connection (in. SAE Flare) 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 Flow Capacity (lb air/min) 6.3 6.3 6.3 6.3 6.3 6.3 6.3 6.3 Setting (psig) 350 350 350 350 350 350 350 350

NPTF — National Pipe Thread Female SAE — Society of Automotive Engineers

Physical data

ENGLISH (cont)

LEGEND

*Charges listed are for 30HXC units. The 30HXA units are shipped with a nitrogen holding charge only. To determine the refrigerant charge requirements for 30HXA units see the System Refrigerant Charge for Start-Up table in the Application Data on page 29.

†Only on units with factory-installed suction service valves.

UNIT SIZE 30HX 161 171 186 206 246 261 271

UNIT OPERATING WEIGHT (lb)

Water-Cooled (HXC) 7452 7660 7854 10,581 10,969 10,992 11,029 Condenserless (HXA) 5752 5777 5946 7,485 7,621 7,621 7,621

COMPRESSORS Semi-Hermetic, Twin Screw Quantity 2 2 2 3 3 3 3 Nominal Capacity per Compressor (tons) 80/56 66/80 80/80 66/39/80 80/56/80 80/66/80 80/80/80 Economizer Yes Yes Yes Yes Yes Yes Yes No. Capacity Steps

30HXC Unit 6 6 6 8 8 8 8 30HXA Unit (maximum on 30HXC unit with factory-installed option) 8 8 8 11 11 11 11

Minimum Step Capacity (%) 30HXC Unit 20 20 20 13 13 13 13 30HXA Unit (30HXC unit with factory-installed option) 10 10 10 7 7 7 7

REFRIGERANT R-134a Charge* (lb) Circuit A/Circuit B 157/110 119/140 135/135 220/135 220/135 220/135 220/135

COOLER TYPE Shell and Tube with Enhanced Copper Tubes Part No. 10HX400- 601 611 621 631 632 632 632 Net Fluid Volume (gal) 28.5 28.5 33.4 43.1 47.2 47.2 47.2 Maximum Refrigerant Pressure (psig) 220 220 220 220 220 220 220 Maximum Water-Side Pressure (psig) 300 300 300 300 300 300 300 Water Connections

Inlet and Outlet (in.) (Standard Pass) 5 5 5 6 6 6 6 Drain (in. NPT) (Standard Pass) 3/8 3/8 3/8 3/8 3/8 3/8 3/8

Relief Valve Connection (in. NPTF) 3/4 3/4 3/4 3/4 3/4 3/4 3/4 Flow Capacity (lb air/min) 31.7 31.7 31.7 31.7 31.7 31.7 31.7

Relief Setting (psig) 220 220 220 220 220 220 220 Standard Number of Passes 2 2 2 2 2 2 2

30HXA OIL SEPARATOR

Part No. 09RX400- 215 214 214 213 213 213 213 Maximum Refrigerant Pressure (psig) 320 320 320 320 320 320 320 Refrigerant Connections (in.)

Discharge Circuit A/B 21/8/21/8 21/8/21/8 21/8/21/8 21/8/21/8 21/8/21/8 21/8/21/8 21/8/21/8 Liquid Circuit A/B 13/8/13/8 13/8/13/8 13/8/13/8 15/8/13/8 15/8/13/8 15/8/13/8 15/8/13/8

Relief Valve Connection (in. SAE Flare) 5/8 5/8 5/8 5/8 5/8 5/8 5/8 Flow Capacity (lb air/min) 21.6 21.6 21.6 21.6 21.6 21.6 21.6

Relief Setting (psig) 320 320 320 320 320 320 320 CONDENSER (HXC) Shell and Tube with Enhanced Copper Tubes

Part No. 09RX400- 261 262 262 263 264 264 264 Net Fluid Volume (gal) 30.6 37.6 37.6 47.6 55.1 55.1 55.1 Maximum Refrigerant Pressure (psig) 220 220 220 220 220 220 220 Maximum Water-Side Pressure (psig) 300 300 300 300 300 300 300 Water Connections (in.) Victaulic Type Connection

Inlet and Outlet (Standard Pass) 6 6 6 8 8 8 8 Drain (NPT) (Standard Pass) 3/8 3/8 3/8 3/8 3/8 3/8 3/8

Relief Valve Connection (in. NPTF) 3/4 3/4 3/4 3/4 3/4 3/4 3/4 Flow Capacity (lb air/min) 31.7 31.7 31.7 31.7 31.7 31.7 31.7

Relief Setting (psig) 220 220 220 220 220 220 220 Standard Number of Passes 2 2 2 2 2 2 2

DISCHARGE LINE†

Relief Valve

Connection (in. SAE Flare) 3/8 3/8 3/8 3/8 3/8 3/8 3/8 Flow Capacity (lb air/min) 6.3 6.3 6.3 6.3 6.3 6.3 6.3 Setting (psig) 350 350 350 350 350 350 350

NPTF — National Pipe Thread Female

SI

LEGEND

*Charges listed are for 30HXC units. The 30HXA units are shipped with a nitrogen holding charge only. To determine the refrigerant charge requirements for 30HXA units see the System Refrigerant Charge for Start-Up table in the Application Data on page 29.

†Only on units with factory-installed suction service valves.

UNIT SIZE 30HX 076 086 096 106 116 126 136 146

UNIT OPERATING WEIGHT (kg)

Water-Cooled (HXC) 2586 2597 2657 2803 2911 2933 3034 3048 Condenserless (HXA) 2140 2152 2194 2337 2342 2362 2408 2420

COMPRESSORS Semi-Hermetic, Twin Screw Quantity 2 2 2 2 2 2 2 2 Nominal Capacity per Compressor (kW) 137/137 162/137 197/137 232/137 232/137 232/197 281/197 281/232 Economizer No No No No No No No No No. Capacity Steps

30HXC Unit 6 6 6 6 6 6 6 6 30HXA Unit (maximum on 30HXC unit with factory-installed option) 8 8 8 8 8 8 8 8

Minimum Step Capacity (%) 30HXC Unit 20 20 20 20 20 20 20 20 30HXA Unit (30HXC unit with factory-installed option) 10 10 10 10 10 10 10 10

REFRIGERANT R-134a Charge* (kg) Circuit A/Circuit B 34.1/34.1 34.5/34.1 42.7/31.8 49.9/31.8 50.8/40.4 50.8/40.4 56.3/40.4 54.0/45.4

COOLER Shell and Tube with Enhanced Copper Tubes Part No. 10HX400- 401 401 402 408 406 406 405 405 Net Fluid Volume (L) 64.3 64.3 71.9 85.5 81.0 81.0 90.8 90.8 Maximum Refrigerant Pressure (kPa) 1517 1517 1517 1517 1517 1517 1517 1517 Maximum Water-Side Pressure (kPa) 2068 2068 2068 2068 2068 2068 2068 2068 Water Connections

Inlet and Outlet (in.) (Standard Pass) 4 4 4 5 5 5 5 5 Drain (in. NPT) (Standard Pass) 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8

Relief Valve Connection (in. NPTF) 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 Flow Capacity (kg air/min) 14.38 14.38 14.38 14.38 14.38 14.38 14.38 14.38

Relief Setting (kPa) 1517 1517 1517 1517 1517 1517 1517 1517 Standard Number of Passes 3 3 3 3 2 2 2 2

30HXA OIL SEPARATOR

Part No. 09RX400- 217 217 216 216 215 215 215 215 Maximum Refrigerant Pressure (kPa) 2205 2205 2205 2205 2205 2205 2205 2205 Refrigerant Connections (in.)

Discharge A/B 21/8/21/8 21/8/21/8 21/8/21/8 21/8/21/8 21/8/21/8 21/8/21/8 21/8/21/8 21/8/21/8 Liquid A/B 11/8/21/8 11/8/11/8 11/8/11/8 11/8/11/8 11/8/11/8 11/8/11/8 11/8/11/8 11/8/11/8

Relief Valve Connection (in. SAE Flare) 5/8 5/8 5/8 5/8 5/8 5/8 5/8 5/8 Flow Capacity (kg air/min) 9.80 9.80 9.80 9.80 9.80 9.80 9.80 9.80

Relief Setting (kPa) 2206 2206 2206 2206 2206 2206 2206 2206 CONDENSER (HXC) Shell and Tube with Enhanced Copper Tubes

Part No. 09RX400- 257 257 258 258 259 259 260 260 Net Fluid Volume (L) 63.6 63.6 69.3 69.3 90.5 90.5 104.1 104.1 Maximum Refrigerant Pressure (kPa) 1517 1517 1517 1517 1517 1517 1517 1517 Maximum Water-Side Pressure (kPa) 2068 2068 2068 2068 2068 2068 2068 2068 Water Connections (in.) Victaulic Type Connection

Inlet and Outlet (Standard Pass) 5 5 5 5 5 5 5 5 Drain (NPT) (Standard Pass) 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8

Relief Valve Connection (in. NPTF) 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 Flow Capacity (kg air/min) 14.38 14.38 14.38 14.38 14.38 14.38 14.38 14.38

Relief Setting (kPa) 1517 1517 1517 1517 1517 1517 1517 1517 Standard Number of Passes 2 2 2 2 2 2 2 2

DISCHARGE LINE†

Relief Valve

Connection (in. SAE Flare) 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 Flow Capacity (kg air/min) 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 Relief Pressure (kPa) 2413 2413 2413 2413 2413 2413 2413 2413

NPTF — National Pipe Thread Female

Physical data (cont)

SI (cont)

LEGEND

*Charges listed are for 30HXC units. The 30HXA units are shipped with a nitrogen holding charge only. To determine the refrigerant charge requirements for 30HXA units see the System Refrigerant Charge for Start-Up table in the Application Data on page 29.

†Only on units with factory-installed suction service valves.

UNIT SIZE 30HX 161 171 186 206 246 261 271

UNIT OPERATING WEIGHT (kg)

Water-Cooled (HXC) 3381 3475 3564 4799 4976 4986 5003 Condenserless (HXA) 2610 2621 2698 3395 3457 3457 3457

COMPRESSORS Semi-Hermetic, Twin Screw Quantity 2 2 2 3 3 3 3 Nominal Capacity per Compressor (kW) 281/197 232/281 281/281 232/137/281 281/197/281 281/232/281 281/281/281 Economizer Yes Yes Yes Yes Yes Yes Yes No. Capacity Steps

30HXC Unit 6 6 6 8 8 8 8 30HXA Unit (maximum on 30HXC unit with factory-installed option) 8 8 8 11 11 11 11

Minimum Step Capacity (%) 30HXC Unit 20 20 20 13 13 13 13 30HXA Unit (30HXC unit with factory-installed option) 10 10 10 7 7 7 7

REFRIGERANT R-134a Charge* (kg) Circuit A/Circuit B 71.3/49.9 54.0/63.6 61.3/61.3 90.8/61.3 99.9/61.3 99.9/61.3 99.9/61.3

COOLER Shell and Tube with Enhanced Copper Tubes Part No. 10HX400- 601 611 621 631 632 632 632 Net Fluid Volume (L) 107.9 107.9 126.4 163.2 178.7 178.8 178.7 Maximum Refrigerant Pressure (kPa) 1517 1517 1517 1517 1517 1517 1517 Maximum Water-Side Pressure (kPa) 2068 2068 2068 2068 2068 2068 2068 Water Connections

Inlet and Outlet (in.) (Standard Pass) 5 5 5 6 6 6 6 Drain (in. NPT) (Standard Pass) 3/8 3/8 3/8 3/8 3/8 3/8 3/8

Relief Valve Connection (in. NPTF) 3/4 3/4 3/4 3/4 3/4 3/4 3/4 Flow Capacity (kg air/min) 14.28 14.38 14.38 14.38 14.38 14.38 14.38

Relief Setting (kPa) 1517 1517 1517 1517 1517 1517 1517 Standard Number of Passes 2 2 2 2 2 2 2

30HXA OIL SEPARATOR

Part No. 09RX400- 215 214 214 213 213 213 213 Maximum Refrigerant Pressure (kPa) 2205 2205 2205 2205 2205 2205 2205 Refrigerant Connections (in.)

Discharge A/B 21/8/21/8 21/8/21/8 21/8/21/8 21/8/21/8 21/8/21/8 21/8/21/8 21/8/21/8 Liquid A/B 13/8/13/8 13/8/13/8 13/8/13/8 15/8/13/8 15/8/13/8 15/8/13/8 15/8/13/8

Relief Valve Connection (in. SAE Flare) 5/8 5/8 5/8 5/8 5/8 5/8 5/8 Flow Capacity (kg air/min) 9.80 9.80 9.80 9.80 9.80 9.80 9.80

Relief Setting (kPa) 2206 2206 2206 2206 2206 2206 2206 CONDENSER (HXC) Shell and Tube with Enhanced Copper Tubes

Part No. 09RX400- 261 262 262 263 264 264 264 Net Fluid Volume (L) 115.8 142.3 142.3 177.9 208.6 208.6 208.6 Maximum Refrigerant Pressure (kPa) 1517 1517 1517 1517 1517 1517 1517 Maximum Water-Side Pressure (kPa) 2068 2068 2068 2068 2068 2068 2068 Water Connections (in.) Victaulic Type Connection

Inlet and Outlet (Standard Pass) 6 6 6 8 8 8 8 Drain (NPT) (Standard Pass) 3/8 3/8 3/8 3/8 3/8 3/8 3/8

Relief Valve Connection (in. NPTF) 3/4 3/4 3/4 3/4 3/4 3/4 3/4 Flow Capacity (kg air/min) 14.38 14.38 14.38 14.38 14.38 14.38 14.38

Relief Setting (kPa) 1517 1517 1517 1517 1517 1517 1517 Standard Number of Passes 2 2 2 2 2 2 2

DISCHARGE LINE†

Relief Valve

Connection (in. SAE Flare) 3/8 3/8 3/8 3/8 3/8 3/8 3/8 Flow Capacity (kg air/min) 2.9 2.9 2.9 2.9 2.9 2.9 2.9 Relief Pressure (kPa) 2413 2413 2413 2413 2413 2413 2413

NPTF — National Pipe Thread Female

Factory-installed options Wye-delta start — Generally, Wye-delta start is not required when using multiple compressors since the start-ing current is generally less than with one larger compres-sor using Wye-delta start. Wye-delta start is standard on 208/230 v, 60 Hz, 230 v, 60 Hz, and 230 v, 50 Hz units.

It is available as a factory-installed option for all other unit voltages.

Brine — The brine option permits supply liquid tempera-tures to be set below 40 F (4.4 C). Refrigeration circuit components, such as the expansion device, are modified at the factory to correct for the lower refrigeration flow rates.

Special installation requirements apply to brine units. See Cooler and Water-Cooled Condenser Freeze Protection section, page 24.

Minus-one-pass cooler — This factory-installed option reduces pressure drop for high flow applications and/or provides same end inlet and outlet for 076-106 sizes, or opposite end inlet and outlet on 116-271 sizes.

Plus-one-pass cooler — This factory-installed option improves low temperature brine performance. See the 30HX electronic catalog for performance data.

Minimum load control — This option allows additional capacity reduction for unit operation below the minimum step of unloading (down to 10% of full load capacity).

Minimum load control is also available as a field-installed accessory.

Suction service valves — Standard refrigerant dis-charge isolation and liquid valves enable service personnel to store the refrigerant charge in the cooler or condenser during servicing. This factory-installed option allows further isolation of the compressor from the cooler vessel.

Energy management module (EMM) — The EMM is used for 4 to 20 mA leaving fluid temperature reset, cool-ing point reset, 4 to 20 mA demand limit and two-step demand limit. Temperature reset lets the unit reset the leaving fluid temperature to a higher temperature during low load conditions. Temperature reset can also be accom-plished based on return fluid, outdoor air or space temper-ature. (The EMM option is not required when using entering-water, outdoor-air, or space temperature for temperature reset. These types of reset are available with the main board. However, an accessory thermistor is required for outdoor air and/or space temperature reset.)

Demand limiting allows the unit capacity to be limited dur-ing periods of peak energy usage. Demand limit requires an external 4 to 20 mA signal or a 2-step remote pair of dry contacts. Both the 4 to 20 mA and 2-step demand limit percentage values are adjustable. EMM is also avail-able as a field-installed accessory.

Nitrogen holding charge — The 30HXC units can be shipped with either the standard HFC-134a refrigerant charge or an optional nitrogen charge. The 30HXA units are always shipped with a nitrogen holding charge.

BACnet communication option — Provides factory installed communication capability with a BACnet MS/TP network. Allows integration with i-Vu® Open control sys-tem or a BACnet building automation system.

Field-installed accessories Control power transformer — The transformer is sized to supply the needs of the control circuit, sourcing power from the main unit power connection.

Minimum load control — This accessory allows addi-tional capacity reduction for unit operation below the mini-mum step of unloading (down to 10% of full load capacity).

Minimum load control is also available as a factory-installed option.

Sound reduction enclosure — This kit contains a sound enclosure that covers the entire unit to reduce sound levels.

Vibration isolation — Neoprene isolators are field installed to reduce vibration transmission from the com-pressor through the floor and into the conditioned space.

Temperature reset sensor — This accessory sensor provides temperature reset capability from either the occu-pied space or outdoor-air temperature.

NOTE: Temperature reset capability using return tempera-ture is standard.

ITEM

FACTORY-

INSTALLED

OPTION

FIELD-

INSTALLED

ACCESSORY

Wye-Delta Start X Brine X Minus-One-Pass Cooler Head X Plus-One-Pass Cooler Head X Control Power Transformer X Minimum Load Control X X Sound Reduction Enclosure X Vibration Isolation X Temperature Reset Sensor X Chillervisor System Manager III X Cooler Head Insulation X Suction Service Valves X Energy Management Module X X Nitrogen Holding Charge (30HXC) X BACnet Communications X

Options and accessories

*Sponsored by ASHRAE (American Society of Heating, Refrigerating, and Air Conditioning Engineers).

Chillervisor System Manager III — This control can be used to regulate up to eight 30HXA or 30HXC chillers.

Cooler head insulation — This accessory is designed with flexible, 3/4 in. (19 mm) PVC foam (closed-cell) to insulate the cooler heads to minimize heat loss and head sweating.

Energy management module (EMM) — The EMM is used for 4 to 20 mA leaving fluid temperature reset, cool-ing point reset, 4 to 20 mA demand limit and two-step demand limit. Temperature reset lets the unit reset the leaving fluid temperature to a higher temperature during low load conditions. Temperature reset can also be accom-plished based on return fluid, outdoor air or space temperature. (The EMM option is not required when using entering-water, outdoor-air, or space temperature for tem-perature reset. These types of reset are available with the main board. However, an accessory thermistor is required for outdoor air and/or space temperature reset.) Demand limiting allows the unit capacity to be limited during periods of peak energy usage. Demand limit requires an external 4 to 20 mA signal or a 2-step remote pair of dry contacts.

Both the 4 to 20 mA and 2-step demand limit percentage values are adjustable. EMM is also available as a factory-installed option.

Consult factory for other available options not listed here.

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4.

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5.

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6.

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7.

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8.

M od el i n dr aw in g is t yp ic al a nd r ep re se nt s

H X

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9.

S ou nd e nc lo su re a cc es so ry s ho ul d be a lig ne d to th e ce nt er li ne s of th e co nt ro l p an el a cc es s an d pi pi ng o pe ni ng

3.25 (82.55)

5.00 (127.00)

0.88 (22.35)

2.17

(53.34)0.50 DIA

(4) HOLES

1.42 (36.07)

3.58 (90.93)

WEIGHT DISTRIBUTION AT MOUNTING PLATES

30HXC UNITS — lb (kg)

UNIT 30HXC

MOUNTING PLATE NO.

1 2 3 4 5 6 076 738 (335) 943 (428) 595 (270) 1110 (503) 1418 (643) 896 (406) 086 738 (335) 947 (430) 597 (271) 1112 (504) 1427 (647) 902 (409) 096 686 (311) 968 (439) 693 (314) 1027 (466) 1447 (656) 1034 (469) 106 730 (331) 1028 (466) 744 (337) 1073 (487) 1510 (685) 1092 (495) 116 728 (330) 1114 (505) 777 (352) 1053 (478) 1615 (733) 1127 (511) 126 738 (335) 1127 (511) 780 (354) 1061 (481) 1628 (738) 1131 (513) 136 758 (344) 1176 (533) 811 (368) 1083 (491) 1689 (766) 1171 (531) 146 763 (346) 1182 (536) 815 (370) 1085 (492) 1697 (770) 1172 (532) 161 817 (371) 1272 (577) 908 (412) 1219 (553) 1890 (857) 1346 (610) 171 936 (425) 1318 (598) 840 (381) 1379 (626) 1946 (883) 1241 (563) 186 962 (436) 1361 (617) 860 (390) 1410 (640) 1996 (905) 1265 (574) 206 948 (430) 2406 (1091) 1243 (564) 1201 (545) 3133 (1421) 1650 (748) 246 985 (447) 2515 (1141) 1306 (592) 1154 (523) 3276 (1486) 1733 (786) 261 985 (447) 2520 (1143) 1311 (595) 1154 (523) 3283 (1489) 1739 (789) 271 985 (447) 2529 (1147) 1318 (598) 1154 (523) 3294 (1494) 1749 (793)

30HXA UNITS — lb (kg)

NOTE: See pages 12-19 for center of gravity details.

UNIT 30HXA

MOUNTING PLATE NO.

1 2 3 4 5 6 076 555 (252) 793 (360) 418 (190) 926 (420) 1326 (601) 699 (317) 086 555 (252) 798 (362) 418 (190) 928 (421) 1340 (608) 705 (320) 096 509 (231) 808 (367) 493 (224) 848 (385) 1350 (612) 827 (375) 106 555 (252) 869 (394) 541 (245) 896 (406) 1410 (640) 880 (399) 116 530 (240) 895 (406) 540 (245) 855 (388) 1456 (660) 887 (402) 126 540 (245) 905 (410) 541 (245) 864 (392) 1468 (666) 887 (402) 136 548 (249) 926 (420) 555 (252) 873 (396) 1498 (679) 908 (412) 146 551 (250) 930 (422) 555 (252) 883 (400) 1506 (683) 908 (412) 161 560 (254) 965 (438) 598 (271) 954 (433) 1650 (748) 1025 (465) 171 627 (284) 968 (439) 534 (242) 1072 (486) 1658 (752) 918 (416) 186 648 (294) 1004 (455) 552 (250) 1110 (504) 1703 (772) 939 (426) 206 671 (304) 1702 (772) 879 (399) 850 (385) 2216 (1005) 1167 (529) 246 681 (309) 1748 (793) 911 (413) 797 (362) 2276 (1032) 1209 (548) 261 681 (309) 1748 (793) 911 (413) 797 (362) 2276 (1032) 1209 (548) 271 681 (309) 1748 (793) 911 (413) 797 (362) 2276 (1032) 1209 (548)

WEIGHT DISTRIBUTION AT EACH MOUNTING PLATE

NOTE: Dimensions shown in inches (mm).

30HX FOOT

Unit storage Provide machine protection — Store machine and starter indoors, protected from construction dirt and moisture. Inspect under shipping tarps, bags, or crates to be sure water has not collected during transit. Keep protec-tive shipping covers in place until machine is ready for installation.

Unit location Unit should be level (particularly in its major lengthwise dimension) to assure proper oil return.

The unit should be located indoors in an area of temper-ature between 50 to 104 F (10 to 40 C).

Good acoustic design practice should be followed, i.e., unit should not be located adjacent to sound-sensitive areas unless appropriate consideration has been made.

Cooler fluid temperature

1. Maximum leaving water (fluid) temperature (LWT) is

60 F (21 C). Unit can start and pull down with up to 95 F (35 C) entering water (fluid) temperature due to MOP (maximum operating pressure) feature of the expansion valve. For sustained operation, it is recom-mended that entering fluid temperature not exceed 70 F (21.1 C).

2. Minimum LWT is 40 F (4.4 C) for standard units.

The brine option is required for operation with leaving fluid temperatures in the range of 39 to 14 F (4 to –9 C). For ratings below 40 F (4.4 C) LWT, contact your local Carrier representative.

3. Minimum entering water (fluid) temperature (EWT) is 45 F (7.2 C). Maximum EWT is 70 F (21.1 C).

Leaving-fluid temperature reset The accessory reset sensor can be applied to the chiller to provide reset of in LWT constant fluid flow systems. Reset reduces compressor power usage at part load when design LWT is not necessary. Humidity control should be consid-ered, since higher coil temperatures resulting from reset will reduce latent heat capacity. Three reset applications are offered:

From return-fluid temperature — Increases LWT set point as return (or entering) fluid temperature decreases (indicating load decrease). Reset from return fluid may be used in any application where return fluid provides accu-rate load indication. Limitation of return-fluid reset is that the LWT may only be reset to value of design return-fluid temperature. No additional hardware is required.

From outdoor-air temperature — Increases LWT as outdoor ambient temperature decreases (indicating load decrease). This reset should be applied only where outdoor ambient temperature is an accurate indication of load. A field-supplied thermistor is required.

From occupied space temperature — Increases LWT as space temperature decreases (indicating load decrease).

This reset should be applied only where space temperature is an accurate indication of load. A field-supplied thermis-tor is required.

Temperature can also be reset using a 4 to 20 mA signal from the control system. This type of reset requires the energy management module accessory.

Condenser fluid temperature

1. Maximum leaving condenser fluid temperature is

110 F (43 C) on all 30HXC units.

2. Standard 30HXC units will start at entering con-denser fluid temperatures above 55 F (12.8 C). In general, however, continuous machine operation with entering condenser fluid temperatures below 70 F (21.1 C) is not recommended. When the entering condenser fluid temperature is expected to drop below 70 F (21.1 C), it is recommended that some form of condenser flow control be used to optimize performance. Tower pump, bypass valves, or flow regulating valves may be controlled by a 4 to 20 mA output from the 30HXC control (60-second open to close time recommended for actuator).

Cooler and water-cooled condenser temperature rise Ratings and performance data in this publication are for a cooling temperature rise of 10° F (5.6° C). Units may be operated at a different temperature rise, provided flow lim-its are not exceeded and corrections to capacity, etc., are made. For minimum flow rates, see the Minimum Flow Rates table. High flow rate is limited by pressure drop that can be tolerated.

Minimum cooler flow — Flow (maximum cooler tem-perature rise) is shown in the Minimum Flow Rates table.

Minimum flow rate must be maintained to prevent fouling.

When gpm (L/s) required is lower (or rise is higher), follow recommendations below:

1. Multiple smaller chillers can be applied in series, each providing a portion of the design temperature rise.

2. Chilled fluid can be recirculated to raise flow rate.

However, mixed temperature entering cooler must be maintained at a minimum of at least 5° F (2.8° C) above the leaving chilled fluid temperature.

3. Special plus one-pass cooler can be used. Contact your Carrier representative for further information.

Maximum cooler flow (> 5 gpm/ton or < 5° F rise [> 0.09 L/s · kW or < 2.7° C rise]) — Maximum flow results in practical maximum pressure drop through cooler.

Special minus-one-pass cooler can be used to reduce pres-sure drop. Contact your Carrier representative.

Return fluid can bypass the cooler to keep pressure drop through cooler within acceptable limits. This permits a higher T with lower fluid flow through cooler and mixing after the cooler. Contact your Carrier representative if pressure drop appears excessive.

Variable cooler flow rates — These variable rates may be applied to standard 30HX series chillers. However, the unit will attempt to maintain a constant leaving chilled-fluid temperature. In such cases, minimum fluid loop volume must be in excess of 3 gal per ton (3.2 L per kW) and flow rate must change in steps of less than 10% per minute.

Apply 6 gal per ton (6.5 L per kW) fluid loop volume mini-mum if flow rate changes more rapidly.

Application data

Minimum water-cooled condenser flow — This value (maximum rise) is shown in Minimum Flow Rates table.

Ensure leaving-fluid temperature does not exceed 105 F (40.5 C).

MINIMUM FLOW RATES

*Based on 20 F (11.1 C) temperature difference at AHRI conditions.

NOTES:

1. The 30HX units will start with loop temperatures up to 95 F (35 C).

2. Minimum flow rate shown is based on AHRI Ratings and is for reference only.

20 F (11.1 C) is the maximum cooler temperature differential that will determine actual minimum flow rate.

3. To obtain proper temperature control, loop fluid volume must be at least 3 gal/ ton (3.23 L/kW) of chiller nominal capacity for air conditioning and at least 6 gal/ton (6.5 L/kW) for process applications.

Oversizing chillers Oversizing chillers by more than 15% at design conditions must be avoided as the system operating efficiency will be adversely affected (resulting in greater and/or excessive electrical demand and cycling of compressors). When future expansion of equipment is anticipated, install a sin-gle chiller to meet present load requirements, and install a second chiller to meet the additional load demand.

It is also recommended that the installation of 2 smaller chillers be considered where operation at minimum load is critical. The operation of 2 small chillers at higher loading is preferred to operating a single chiller at or near its mini-mum recommended value.

The minimum load control accessory should not be used as a means to allow oversizing chillers. Minimum load con-trol should be given consideration where substantial oper-ating time is anticipated below the minimum unloading step.

Parallel chillers Where chiller capacities greater than can be supplied by a single 30HX chiller are required, or where stand-by capa-bility is desired, chillers may be installed in parallel. Units may be of the same or different sizes. However, cooler and condenser flow rates must be balanced to ensure proper flow to each chiller. The standard 30HX ComfortLink™ controls can be configured to provide lead/lag control for two chillers. The accessory Chillervisor System Man-ager III control may be used for proper leaving chilled fluid temperature control and to ensure proper staging sequence of up to 8 chillers. Refer to the accessory Chillervisor System Manager III installation instructions for further details.

Series chillers Chillers in series may be used for capacities greater than those supplied by a single 30HX chiller. Using the minus-one-pass cooler head option, fluid pressure drop across the cooler can be held to reasonable levels. The leaving fluid temperature sensors need not be relocated. However, the cooler minimum entering fluid temperature limitations should be considered for the chillers located downstream of other chillers. The standard 30HX control can control two 30HX chillers in series. Condensers should be piped in parallel to maximize capacity and efficiency. This should also minimize condenser pressure drop and saturated con-densing temperatures. However, if condensers are piped in series, ensure that the leaving fluid temperature does not exceed 105 F (40.5 C) on standard machines.

DEVICE

UNIT

SIZE

30HX

COOLER MIN. FLOW

RATE*

COOLER TEMP

DIFFERENCE

No. of Passes Type GPM L/s F C

COOLER

2 Minus 1 136.0 8.6 13 7.4

3 Standard 90.0 5.7 20 11.1

4 Plus 1 68.0 4.3 27 14.8

2 Minus 1 149.0 9.4 13 7.4

3 Standard 100.0 6.3 20 11.1

4 Plus 1 75.0 4.7 27 14.8

2 Minus 1 169.0 10.7 13 7.4

3 Standard 113.0 7.1 20 11.1

4 Plus 1 85.0 5.3 27 14.8

2 Minus 1 188.0 11.8 13 7.4

3 Standard 125.0 7.9 20 11.1

4 Plus 1 94.0 5.9 27 14.8

1 Minus 1 272.0 17.2 10 5.6

2 Standard 136.0 8.6 20 11.1

3 Plus 1 91.0 5.7 30 16.7

1 Minus 1 295.0 18.6 10 5.6

2 Standard 147.0 9.3 20 11.1

3 Plus 1 98.0 6.2 30 16.7

1 Minus 1 327.0 20.7 10 5.6

2 Standard 164.0 10.3 20 11.1

3 Plus 1 109.0 6.9 30 16.7

1 Minus 1 350.0 22.1 10 5.6

2 Standard 175.0 11.0 20 11.1

3 Plus 1 117.0 7.4 30 16.7

1 Minus 1 376.0 23.7 10 5.6

2 Standard 188.0 11.9 20 11.1

3 Plus 1 125.0 7.9 30 16.7

1 Minus 1 399.0 25.2 10 5.6

2 Standard 199.0 12.6 20 11.1

3 Plus 1 133.0 8.4 30 16.7

1 Minus 1 426.0 26.9 10 5.6

2 Standard 213.0 13.4 20 11.1

3 Plus 1 142.0 9.0 30 16.7

1 Minus 1 508.0 32.1 10 5.6

2 Standard 254.0 16.0 20 11.1

3 Plus 1 169.0 10.7 30 16.7

1 Minus 1 597.0 37.7 10 5.6

2 Standard 309.0 18.8 20 11.1

3 Plus 1 199.0 12.6 30 16.7

1 Minus 1 618.0 39.0 10 5.6

2 Standard 309.0 19.5 20 11.1

3 Plus 1 206.0 13.0 30 16.7

1 Minus 1 642.0 40.5 10 5.6

2 Standard 321.0 20.3 20 11.1

3 Plus 1 214.0 13.5 30 16.7

CONDENSER

076,086 2 — 105 6.6 — —

096,106 2 — 135 8.5 — —

116,126 2 — 170 10.7 — —

136,146 2 — 195 12.3 — —

161 2 — 235 14.8 — —

171,186 2 — 255 16.1 — —

206 2 — 273 17.2 — —

246 2 — 333 21.0 — —

261 2 — 333 21.0 — —

271 2 — 333 21.0 — —

RECIRCULATION FLOW

Energy management Demand limiting and load shedding are popular techniques used to reduce peak electric demands typically experienced during hot summer days when air conditioning loads are highest. When utility electricity demands exceed a certain level, electrical loads are turned off to keep the peak demands below a prescribed maximum limit. Compressor unloading reduces electrical demand while allowing the chiller to operate under part-load capacity and to maintain partial chilled fluid cooling.

Electrical demand can be limited through demand limit input to chiller control which unloads the chiller to a prede-termined percentage of the load. One stage of unloading can be initiated by a remote signal to significantly reduce the chiller power consumption. This power reduction applies to the full load power at nominal conditions. The demand limit control should not be cycled less than 10 minutes on and 5 minutes off.

Duty cycling Duty cycling will cycle an electrical load at regular intervals, regardless of electrical demand. This reduces the electrical demand by “fooling” demand measuring devices. Duty cycling of the entire compressor is NOT recommended since motor windings and bearings will be damaged by constant cycling.

Wye-delta start Wye-delta start is standard on 30HX 208/230-v, 60-Hz units and 230-v, 50-Hz units and optional on all other 30HX units. This feature is not always required on 30HX units due to the use of multiple compressors that allow small electrical load increments, but is available if required. Maxi-mum instantaneous current flow (see ICF in Electrical Data tables on pages 36-39) should be used in determining need.

Vibration isolation External vibration isolators are available as field-installed accessories.

Strainers A strainer with a minimum screen size of 20 mesh must be installed in both the cooler and condenser fluid lines, within 10 ft (3 m) of the inlets to both the cooler and condenser.

For 30HXA units, this requirement applies only to the cooler.

Chilled fluid loop volume The chilled…