Carrier 00EFN900003000A User Manual

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30XA080-350Remote Cooler Accessory 60 Hz

Installation Instructions

Part Numbers 00EFN900003000A, 00EFN900003100A

CONTENTS

SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . 1GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-3INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-16

Cooler and Economizer Removal. . . . . . . . . . . . . . . . . 4Remote Cooler and Economizer Installation. . . . . 10

SAFETY CONSIDERATIONS

Installing, starting up, and servicing air-conditioningequipment can be hazardous due to system pressures, electrical components, and equipment location. Only trained, qualified installers and service technicians should install,start-up,and service this equipment.

When working on air-conditioningequipment, observe precautions in the literature and on tags, stickers, and labels attached to the equipment. Follow all safety codes. Wear safety glasses and work gloves. Use care in handling equipment.

Be sure power to equipment is shut off before performing maintenance or service. Lock out and safety-tagall disconnects.

GENERAL

The remote cooler accessory allows for the indoor relocation of the cooler on 30XA080-350units as another means of freeze protection. When the cooler is located in a heated space, ananti-freezesolution is not needed and the performance degradation associated with antifreeze solution can be avoided. Maximum separation of the 30XA base unit and cooler is limited to 50 lineal ft (15.25 m) or 75 equivalent ft (22 m) of piping. For more information, refer to the Carrier Piping Design manual.

The liquid and economizer lines between the exteriorinstalled unit and the remote, interior-installedcooler must have pressure relief devices installed in accordance with ASHRAE 15 (American Society of Heating, Refrigeration, and Air Conditioning Engineers) and local codes.

Units to be modified for a remote cooler application must have the following options:

Factory-installedsuction service valve option.

Condenser coil type:

Aluminum fin and copper tube

Pre-coataluminum fin and copper tube

E-coataluminum fin and copper tube

Copper fin and copper tube

E-coatcopper fin and copper tube

NOTE: The microchannel heat exchanger option can NOT use the remote cooler accessory.

The application is limited to the following constraints:

Operating chilled water temperature is between 40 and 55 F (4.4 and 12.8 C). When the remote cooler is applied, the cooler heaters will not function, so it is critical to maintain the water temperature above the freezing point at all times. If the water temperature falls below the freezing point, the cooler does not have protection to keep the water from freezing.

The interior space temperature where the cooler will be installed must be maintained at a minimum of 50 F (10 C).

Underground refrigerant piping is NOT permitted for this application.

See Table 1 for accessory package usage and see Table 2 for accessory package contents. In addition to the parts supplied with each accessory package, the following material must be field-supplied:

Refrigerant grade liquid and suction line copper piping for 30XA080-120:circuits A and B and30XA140-160:circuit B (length determined by installation). See Tables 3A and 3B for pipe sizes.

Schedule 40 steel pipe for 30XA140-160:circuit A and30XA180-350:circuits A and B (length determined by installation). See Tables 3A and 3B for pipe sizes.

350 psig pressure relief valves and fittings (2 per circuit)

Suction line tubing insulation (length determined by installation)

Economizer line tubing insulation (length determined by installation)

1/2 in. strain relief (2)

Conduit (length determined by installation)

ASME (American Society of Mechanical Engineers) B16.9 stub end (4 in. [102 mm]), Schedule 40 Steel (one needed for 30XA140-160,two needed for30XA180-350)

ASME B16.5 Class 600 pipe flange (4 in. [102 mm]) with field-modifiedextra mounting hole (one needed for30XA260-300,two needed for 325, 350)

Flange mounting hardware

Extra flange gaskets (if necessary)

The 30XA units use R-134arefrigerant. No other refrigerant may be used in this system. Suction tubing design pressure is 220 psig (1517 kPa). Economizer and liquid tubing design pressure is 350 psig (2413 kPa). Failure to use gage set, hoses, and recovery systems designed to handleR-134arefrigerant may result in personal injury and equipment damage. If unsure about equipment, consult the equipment manufacturer.

Table 1 — Accessory Package Usage

30XA UNIT SIZE

PACKAGE REQUIRED

080-200

00EFN900003000A

220-350

00EFN900003100A

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Book

2

Catalog No. 04-53300012-01

Printed in U.S.A.

Form 30XA-7SI

Pg 1

1-07

Replaces: New

Tab

5c

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Table 2 — Accessory Package Contents

ACCESSORY PACKAGE

ITEM NO.

DESCRIPTION

PART NO.

QTY

PART NO.

 

 

 

 

 

1

Economizer shutoff valve - 11/8 in. (29 mm)

00PPG000023501A

2

 

2

Liquid line shutoff valve - 13/8 in. (35 mm)

EP71BA393

2

 

3

5 Wire jacketed cable

RM02EJ200

200 ft

 

(61 m)

 

 

 

 

 

4

Cable assembly

32GB404694

5

 

5

Junction box

HX30FZ001

2

 

6

Junction box cover

HX38ZZ001

2

00EFN900003000A

7

M6 Screws

00PPN500000302A

8

8

Cooler pipe flange - 31/8 in. (79 mm)

00PSN500091400A

2

 

 

10

Flex connector flange - 4 in. (102 mm)

00PSG000213300A

2

 

11

Loose pipe flange - 4 in. (102 mm)

00PSG000205100A

2

 

12

Cooler flange O-ring

KK71EW256

4

 

13

Flex connector flange O-ring

KK71EW250

2

 

14

Compressor flange gasket - 3 in. (76 mm)

00PPG000011702A

2

 

15

Compressor flange gasket - 4 in. (102 mm)

00PSG000011703A

4

 

16

Transducer wiring harness - 100 ft (30.5 m)

00PSN500180500A

2

 

1

Economizer shutoff valve - 11/8 in. (29 mm)

00PPG000023501A

2

 

2

Liquid line shutoff valve - 13/8 in. (35 mm)

EP71BA393

2

 

3

5 Wire jacketed cable

RM02EJ200

200 ft

 

(61 m)

 

 

 

 

 

4

Cable assembly

32GB404694

5

 

5

Junction box

HX30FZ001

2

 

6

Junction box cover

HX38ZZ001

2

00EFN900003100A

7

M6 Screws

00PPN500000302A

8

 

8

Flex connector flange O-ring

KK1EW250

2

 

9

Compressor flange gasket - 4 in. (102 mm)

00PSG000011703A

4

 

10

Compressor flange gasket - 5 in. (127 mm)

00PPG000011704A

4

 

11

Loose pipe flange - 5 in. (127 mm)

00PSG000211900A

2

 

12

Loose pipe flange - 4 in. (102 mm)

00PSG000205100A

2

 

13

Flex connector flange - 4 in. (102 mm)

00PSG000213300A

2

 

14

Transducer wire harness - 100 ft (30.5 m)

00PSN500180500A

2

Choose a space that can support the weight of the cooler and economizer with service clearances and area for refrigerant piping. Field-suppliedpiping must be limited to less than 50 lineal ft (15.25 m) or 75 equivalent ft (22 m) in length. Suction and liquid line risers must be limited to less than 15 ft (4.5 m) vertical riser elevation. Suction lines and economizer lines must be insulated to prevent condensation. Relocating the cooler introduces minimal line losses if correct piping practices are followed. Buried lines are not permitted.

The remote cooler system can be applied in three different configurations. See Fig. 1-3.In Fig. 1, the remote cooler and the outdoor unit are at the same elevation. The suction, liquid, and economizer lines run parallel between the cooler and the outdoor unit. In Fig. 2, the outdoor unit and remote cooler are at the same elevation, but the interconnecting piping has an elevation of up to 15 ft (4.5 m) above the base elevation of the cooler. This could be result of running piping over a wall or through the ceiling in a building. In Fig. 3, the remote cooler is located below the outdoor unit. The interconnecting piping has an elevation of up to 15 ft (4.5 m) above the base elevation of the remote cooler. This could occur if the remote cooler is installed in a basement.

NOTE: Unit 30XA refrigeration piping can be either copper tubing or steel tubing with flanged connections. All units are

factory charged with compressor oil to the required level. However, when the double riser is constructed with U-bendsor street elbows, a substantial amount of oil can be trapped in theU-bendduring prolonged minimum load operation. If this occurs, additional oil is needed to add to the system to prevent the oil level from dropping below the minimum level in the oil separator. Add 1 gallon of oil to each circuit. Refer to Controls,Start-up,Operation, Service, and Troubleshooting Guide for recommended oil type.

Table 3A — Refrigeration Piping and

Connections Material (English)

PIPE SIZE (in.)

MATERIAL

5/8,7/8, 11/8, 13/8, 15/8,

Refrigeration copper

21/8, 25/8, 31/8

 

2, 21/2, 3, 31/2, 4

Schedule 40 Steel

Table 3B — Refrigeration Piping and

Connections Material (SI)

PIPE SIZE (mm)

MATERIAL

16, 22, 29, 35, 41, 54, 67, 79

Refrigeration copper

51, 64, 76, 89, 102

Schedule 40 Steel

2

INDOOR LOCATION

 

LEGEND

30XA

SUCTION

............

Liquid Line

 

SERVICE

 

Economizer Line

 

VALVE

 

Suction Line

 

 

 

 

 

REMOTE COOLER

ECONOMIZER

Fig. 1 — 30XA Unit and Cooler Level, Piping Parallel (Single Circuit Shown)

INDOOR LOCATION

LEGEND

............ Liquid Line

Economizer Line

Suction Line

30XA

15 FT MAX

SUCTION

SERVICE

VALVE

REMOTE COOLER

ECONOMIZER

Fig. 2 — 30XA Unit and Cooler Level, Piping Elevated (Single Circuit Shown)

 

 

30XA

 

 

INDOOR LOCATION

 

LEGEND

15 FT MAX

............

Liquid Line

 

 

Economizer Line

 

 

Suction Line

SUCTION

 

 

 

 

SERVICE

 

 

VALVE

 

 

REMOTE COOLER

 

 

ECONOMIZER

 

a30-4511

 

Fig. 3 — 30XA Unit with Cooler Located Below Unit (Single Circuit Shown)

3

INSTALLATION

Shut off all power to this equipment prior to installation. There may be more than one disconnect switch. Tag all disconnect locations to alert others not to restore power until work is completed. Failure to disconnect power from equipment prior to installation could result in serious personal injury or death.

1.Inspect package contents for missing or damaged parts. File a claim with the shipping agency if parts are damaged and notify your local Carrier representative if any item is missing.

2.Determine the new location for the cooler. Ensure that the new location supports the cooler and economizers weights and that there is enough room for service access and tube removal. See Tables 4A and 4B to determine refrigeration line sizes. See Table 5 for cooler and economizers weights. See Fig. 4A-5Bfor cooler and economizers dimensions, tube removal clearances, and service areas.

3.Open and tag all electrical disconnects.

Cooler and Economizer Removal — The cooler and economizers are accessible from the cooler side of the unit. To remove the cooler and economizers from the unit, complete the following steps:

1.Remove refrigerant from all circuits using standard refrigeration practices. Refer to unit nameplate or installation instructions for refrigerant quantities.

2.Disconnect the cooler heater wiring, and conduit if equipped.

3.Remove entering and leaving chilled water temperature thermistors. Make sure to label thermistors as they are removed. See Fig. 6.

4.Disconnect and label the chilled water flow switch cable from the chilled water flow switch located on the leaving water nozzle. See Fig. 6.

5.Disconnect the suction pressure transducer cables from the transducers. Make sure to label cables as they are removed. See Fig. 6.

NOTE: The suction pressure transducers (SPT) do not necessarily need to be removed. However, use care in protecting the

SPTs throughout the removal and remote installation processes, as the SPTs are an important part of the remote installation.

6.Disconnect the electronic expansion valve (EXV) cables from the EXVs at each economizer. Make sure to label cables as they are removed. See Fig. 6.

NOTE: The 30XA080 units do not utilize an economizer. In this case, only the EXVs are present.

7.Unbolt the cooler suction flanges from the cooler. Temporary supports may be needed to support the suction pipes. See Fig 6.

8.At each circuit’s economizer, cut the liquid lines going to the economizer assembly before the manual shutoff valve (see Fig. 6, cut 1, circuits A and B). Cut the cooler liquid lines between the manual shutoff valve and the cooler (see Fig. 6, cut 2, circuits A and B). Cut the economizer lines between the manual shutoff valve and the sensors (see Fig. 6, cut 3, circuits A and B).

9.Remove the screws from the feet of each economizer. Save all of the screws. Remove the economizers by carefully sliding them out the cooler side of the unit.

10.Remove the screws from the cooler feet. Save all of the screws. Slide the cooler slightly to the left to clear the refrigerant tubing.

11.Remove the cooler by carefully sliding the cooler out the cooler side of the unit.

Because 30XA systems use polyolester oil, which can absorb moisture, it is important to minimize the amount of time that the refrigeration system is left exposed to the atmosphere. Minimizing the exposure time will reduce the amount of moisture that could possibly damage the unit. The removal instructions minimize the exposure time to prevent this type of damage. The remote installation instructions outline a dehydration process to counteract any exposure that might have occurred.

Before installation of the field-suppliedpiping, the piping must be thoroughly cleaned and free of dirt, debris, oil, and welding residue. Presence of these objects will cause severe damage to the compressors or other components of the refrigeration system.

4

Table 4A — Refrigeration Line Sizes (English)

30XA

SUCTION LINE

DOUBLE SUCTION RISERS

COOLER

CONDENSER

ECONOMIZER

Circuit A

Circuit B

LIQUID LINE

LIQUID LINE

LINE

UNIT

 

 

SIZE

Circuit A

Circuit B

Riser A

Riser B

Riser A

Riser B

Circuit A

Circuit B

Circuit A

Circuit B

Circuit A

Circuit B

 

(in.)

(in.)

(in.)

(in.)

(in.)

(in.)

(in.)

(in.)

(in.)

(in.)

(in.)

(in.)

080

31/8

31/8

15/8

25/8

15/8

25/8

11/8

11/8

11/8

11/8

090

31/8

31/8

15/8

25/8

15/8

25/8

11/8

11/8

11/8

11/8

7/8

7/8

100

31/8

31/8

15/8

25/8

15/8

25/8

11/8

11/8

11/8

11/8

7/8

7/8

110

31/8

31/8

15/8

25/8

15/8

25/8

11/8

11/8

11/8

11/8

7/8

7/8

120

31/8

31/8

15/8

25/8

15/8

25/8

11/8

11/8

11/8

11/8

7/8

7/8

140

4

31/8

2

31/2

15/8

25/8

13/8

11/8

13/8

11/8

11/8

7/8

160

4

31/8

2

31/2

15/8

25/8

13/8

11/8

13/8

11/8

11/8

7/8

180

4

4

2

31/2

2

31/2

13/8

13/8

13/8

13/8

11/8

11/8

200

4

4

2

31/2

2

31/2

13/8

13/8

13/8

13/8

11/8

11/8

220

4

4

2

31/2

2

31/2

13/8

13/8

13/8

13/8

11/8

11/8

240

4

4

2

31/2

2

31/2

13/8

13/8

13/8

13/8

11/8

11/8

260

4

4

21/2

3

2

31/2

15/8

13/8

15/8

13/8

11/8

11/8

280

4

4

21/2

3

2

31/2

15/8

13/8

15/8

13/8

11/8

11/8

300

4

4

21/2

3

2

31/2

15/8

13/8

15/8

13/8

11/8

11/8

325

4

4

21/2

3

21/2

3

15/8

15/8

15/8

15/8

11/8

11/8

350

4

4

21/2

3

21/2

3

15/8

15/8

15/8

15/8

11/8

11/8

Table 4B — Refrigeration Line Sizes (SI)

30XA

SUCTION LINE

DOUBLE SUCTION RISERS

COOLER

CONDENSER

ECONOMIZER

Circuit A

Circuit B

LIQUID LINE

LIQUID LINE

LINE

UNIT

 

 

SIZE

Circuit A

Circuit B

Riser A

Riser B

Riser A

Riser B

Circuit A

Circuit B

Circuit A

Circuit B

Circuit A

Circuit B

 

(mm)

(mm)

(mm)

(mm)

(mm)

(mm)

(mm)

(mm)

(mm)

(mm)

(mm)

(mm)

080

79

79

41

67

41

67

29

29

29

29

090

79

79

41

67

41

67

29

29

29

29

22

22

100

79

79

41

67

41

67

29

29

29

29

22

22

110

79

79

41

67

41

67

29

29

29

29

22

22

120

79

79

41

67

41

67

29

29

29

29

22

22

140

102

79

51

89

41

67

35

29

35

29

29

22

160

102

79

51

89

41

67

35

29

35

29

29

22

180

102

102

51

89

51

89

35

35

35

35

29

29

200

102

102

51

89

51

89

35

35

35

35

29

29

220

102

102

51

89

51

89

35

35

35

35

29

29

240

102

102

51

89

51

89

35

35

35

35

29

29

260

102

102

64

76

51

89

41

35

41

35

29

29

280

102

102

64

76

51

89

41

35

41

35

29

29

300

102

102

64

76

51

89

41

35

41

35

29

29

325

102

102

64

76

64

76

41

41

41

41

29

29

350

102

102

64

76

64

76

41

41

41

41

29

29

Table 5 — Cooler and Economizer Weights

30XA

COOLER OPERATING

 

 

ECONOMIZER WEIGHT

 

 

WEIGHT

 

Circuit A

Circuit B

 

UNIT SIZE

 

 

 

 

lb

 

kg

lb

 

kg

lb

 

kg

080

1277

 

580

 

 

090

1323

 

601

45

 

20

45

 

20

100

1323

 

601

45

 

20

45

 

20

110

1357

 

617

45

 

20

45

 

20

120

1396

 

634

45

 

20

45

 

20

140

1622

 

737

45

 

20

55

 

25

160

1665

 

757

45

 

20

55

 

25

180

1860

 

845

55

 

25

55

 

25

200

1920

 

872

55

 

25

55

 

25

220

1980

 

900

55

 

25

60

 

27

240

2031

 

923

60

 

27

60

 

27

260

2261

 

1027

55

 

25

70

 

32

280

2321

 

1055

60

 

27

70

 

32

300

2411

 

1095

60

 

27

75

 

34

325

2458

 

1117

70

 

32

70

 

32

350

2523

 

1146

70

 

32

75

 

34

5

 

117-3/4

 

(2991)

 

52-1/4

 

(1327)

 

13/16

 

(20)

1/2

8-9/32

(13)

(210)

DETAIL A

 

SCALE 2:1

52-1/4

TYP 6 PLACES

(1327)

 

SEE DETAIL A

SIDE VIEW

 

14-11/32

 

(364)

 

 

14-11/32

 

(364)

57

52-1/4

(1447)

(1327)

BOTTOM VIEW

NOTES:

1.Measurements are shown in inches (millimeters).

2.Recommended service clearance around the cooler is 36 in. (914 mm).

3.Recommended cooler tube removal area (either end) is 109 in. (2769 mm).

Fig. 4A — 30XA080-120Cooler Dimensions

118-13/16(3017)

52-1/4(1327)

13/16 (20)

1/2

10-23/32

(13)

(272)

DETAIL A

SCALE 2:1

TYP 6 PLACES 52-1/4 (1327)

SIDE VIEW

SEE DETAIL A

15-5/16(389)

 

15-5/16

64

(389)

45-1/4

(1625)

(1149)

BOTTOM VIEW

NOTES:

1.Measurements are shown in inches (millimeters).

2.Recommended service clearance around the cooler is 36 in. (914 mm).

3.Recommended cooler tube removal area (either end) is 109 in. (2769 mm).

Fig. 4B — 30XA140, 160 Cooler Dimensions

21-1/32(534)

14-11/32

(364)

18-21/32

(474)

23-1/32(585)

15-5/1619-21/32(389) (499)

6

119-9/32(3030)

52-1/4(1327)

 

13/16

 

 

(20)

 

 

11-3/16

25-1/16

1/2

(284)

(636)

 

(13)

DETAIL A

 

SCALE 2:1

52-1/4

TYP 6 PLACES

(1327)

 

SIDE VIEW

SEE DETAIL A

18-3/8

18-3/822-11/16

(466)

(466)

(576)

 

18-3/8

 

 

(466)

 

57

52-1/4

 

(1448)

(1327)

 

BOTTOM VIEW

NOTES:

1.Measurements are shown in inches (millimeters).

2.Recommended service clearance around the cooler is 36 in. (914 mm).

3.Recommended cooler tube removal area (either end) for 30XA180, 200 is 1093/8 in. (2779 mm).

4.Recommended cooler tube removal area (either end) for 30XA220, 240 is 1085/8 in. (2758 mm).

Fig. 4C — 30XA180-240Cooler Dimensions

118-5/32(3002)

64-7/8

(1648)

13/16 (20)

1/2 (13)

 

2

11-7/16

 

(290)

 

(50)

 

 

DETAIL A

 

 

SCALE 1:1

 

52-9/32

TYP 6 PLACES

 

(1328)

SIDE VIEW

SEE DETAIL A

20-11/32

16-3/8

(516) 16-3/8

(416)

20-11/32

(416)

 

(516)

27-1/8(689)

20-11/32

16-3/8(516)

(416)24-21/32

(626)

52-1/4

57

(1327)

(1448)

BOTTOM VIEW

NOTES:

1.Measurements are shown in inches (millimeters).

2.Recommended service clearance around the cooler is 36 in. (914 mm).

3.Recommended cooler tube removal area (either end) for 30XA260-300is 1883/8 in. (4784 mm).

4.Recommended cooler tube removal area (either end) for 30XA325, 350 is 23221/32 in. (5910 mm).

Fig. 4D — 30XA260-350Cooler Dimensions

7

22-7/8

23-1/2

(581)

(598)

7-7/8

30-3/8 (200)

(770)

SIDE VIEW

END VIEW

7/16

(11)

7/8 6-1/2(21) (166)

 

 

5/8

 

29-3/8

(17)

2 x Ø 7/16 (11)

(746)

7/16

 

 

(12)

TOP VIEW

a30-4516

NOTES:

1.Measurements are shown in inches (millimeters).

2.Recommended service clearance around the economizer is 36 in. (914 mm).

Fig. 5A — 30XA090-160Economizer Dimensions

23-1/32

24-1/4

(585)

(611)

30-3/4

 

 

7-7/8

(781)

 

 

(256)

SIDE VIEW

 

 

END VIEW

 

 

 

7/16

 

 

 

(11)

 

2-1/4

8-3/4

7/8

 

(56)

 

(21)

 

 

(222)

 

 

 

29-3/8

 

5/8

 

(746)

7/16

(17)

 

4 x Ø 7/16 (11)

(12)

 

 

TOP VIEW

 

 

a30-4517

NOTES:

1.Measurements are shown in inches (millimeters).

2.Recommended service clearance around the economizer is 36 in. (914 mm).

Fig. 5B — 30XA180-350Economizer Dimensions

8

9

SUCTION PRESSURE TRANSDUCER (HIDDEN)

CUT 3

SUCTION PRESSURE

(ECONOMIZER

LINE)

TRANSDUCER

 

(HIDDEN)

CUT 4 (SUCTION LINE)

CUT 1 (LIQUID LINE)

MANUAL

SHUTOFF

VALVE

CUT 2 (COOLERLIQUID LINE)

CUT 2

CUT 1

(COOLER

(LIQUID LINE)

LIQUID LINE)

 

CIRCUIT B

ELECTRONIC

 

COOLER

 

EXPANSION

 

SUCTION

ENTERING CHILLED WATER

VALVES (2)

FLANGES

CIRCUIT A

LEAVING CHILLED WATER

 

(CONT.)

THERMISTORS

CHILLED WATER

FLOW SWITCH

MANUAL SHUTOFF VALVE

Fig. 6 — Typical Cooler Piping-CoolerSide View (30XA140, 160 Shown)

4518-a30

CUT 3 (ECONOMIZER LINE)

CIRCUIT A

ELECTRONIC

EXPANSION

VALVES (2)

NOTES:

1.Circuit A uses steel suction piping.

2.Circuit B uses copper suction piping.

Remote Cooler and Economizers Installa-

tion — Install the cooler and economizers in a remote location by following this procedure:

NOTE: Throughout the Remote Cooler and Economizers Installation steps, the two accessory package part no. (00EFN900003000A, 00EFN900003100A) have been shortened to 3000A and 3100A. When a specific part is referred to in each accessory’s package, the package no. is mentioned followed by the item no. For item no. identification and accessory package contents, refer to Table 2.

1.After removing the cooler from the base unit, strip back the insulation on the cooler tube sheets (if required) and use the two large holes in the top corners for lifting.

2.Transport the cooler and economizer assemblies to the new location and secure them into position. Keep the economizer assemblies as close to the cooler as possible. Also, ensure there is sufficient room to install and remove cooler tubes from either end of the cooler. See Fig. 4A4D for tube removal clearances.

NOTE: The 30XA080 units do not utilize an economizer. In this case, keep the EXV as close to the cooler as possible.

3.Install the accessory-suppliedeconomizer shutoff valves (3000A or 3100A: Item 1) and liquid line shutoff valves (3000A or 3100A: Item 2) on the two economizer lines and liquid lines at circuits A and B on the 30XA base unit. See Fig. 7.

4.At the new cooler location, connect the field-suppliedcooler liquid line piping between thefactory-installedmanual shutoff valve at the two economizer assemblies and at the cooler. See Fig. 7.

5.Following good piping practices, install additional fieldsupplied liquid and economizer line piping in the required length to reconnect the two economizer assemblies to the 30XA base unit. See Fig. 8 for double suction riser construction detail.

Do NOT close both manual shutoff valves in one liquid line. Pressure can build up in the trapped area. To avoid the possibility of personal injury or property damage, the new liquid lines between the manual shutoff valves must each have field-suppliedand installed pressure relief valves.

6.For 30XA080-120:all circuits and30XA140-160:circuit B, cut the suction pipe (copper) at the 30XA base unit and discard (see Fig. 6, cut 4, circuit B). Following good piping practices, installfield-suppliedcopper suction line piping from the 30XA base unit to the cooler. Use theaccessory-suppliedcooler pipe flange (3000A: Item 8), cooler flangeO-ring(3000A: Item 12), and loose pipe flange (3000A: Item 11) to connect thefield-suppliedcopper suction line piping at the cooler. See Fig. 9.

NOTE: The original flanges on the cooler and cut from the 30XA base unit may still be usable. However, Carrier recommends and has provided in the accessory kit, parts necessary to replace both the cooler pipe flange and the suction flange. When the extended piping is installed, these flanges should be replaced.

7.For 30XA140-160:circuit A and30XA180-350:all circuits, unbolt (DO NOT CUT) the portion of the steel suction pipes that connected the flex connector flanges to the cooler at the 30XA base unit and discard. See Fig. 10. Refer to Table 6 for parts required(field-suppliedoraccessory-supplied)to make new connections at the

cooler and the 30XA base unit with the field-suppliedsteel suction line. See Fig 11. Follow good piping practices to installfield-suppliedsteel suction line piping between the cooler and the flex connector at the 30XA base unit.

When field-suppliedflanges and gaskets are used, an extra M16 mounting hole must be drilled and tapped to connect a mounting bracket at the 30XA base unit. See Fig. 10 and 11 for mounting bracket placement. See Fig. 12 for mounting hole locations.

If additional gaskets are needed for installation, they must be 1/16 in.non-asbestosfiber with synthetic rubber binder compressed gasket sheet. An extra mounting hole also needs to be field modified for any additional gaskets. See Fig. 12 for mounting hole locations.Field-suppliedmounting nuts and bolts are also needed for fieldsupplied gaskets.

8.All of the piping connections are now complete. Leak test the unit and then pull a deep dehydration vacuum. Connect the vacuum pump to the high-flowaccess fitting at the bottom of the cooler, the liquid line service valves, and the economizer line service valves. For best results, it is recommended that a vacuum of at least 500 microns (0.5 mm Hg) be obtained. To perform a standing vacuum rise test, observe therate-of-riseof the vacuum in the system. If the vacuum rises by more than 50 microns in a30-minutetime period, then continue the dehydration process until the standing vacuum requirement is met. This will ensure a dry system.

By following this dehydration procedure, the amount of moisture present in the system will be minimized, and the factory-suppliedfilter driers will provide adequate moisture protection. It is highly recommended that the filter drier cores be replaced after 24 hours of operation. This is to ensure that any foreign debris that is captured duringstart-upis removed from the system. Additional moisture removal capacity is also provided.

9.After setup is leak tested and deep dehydration vacuum is completed, install field-suppliedsuction and economizer line insulation between the economizer and the unit. If necessary, reinstall the insulation on the cooler head.

10.To reconnect the EXV cables, use the accessory-suppliedcable assemblies (3000A or 3100A: Item 4). Two cables are needed for the 30XA080 unit, and four cables are needed for30XA090-350units. Take one cable assembly, and label both ends with“EXV-A”for the circuit A main EXV. Then label another three cable assemblies the same way with“EXV-B”,“ECEXV-A”,“ECEXV-B”for the circuit B main EXV, circuit A economizer EXV, and circuit B economizer EXV, respectively (economizer EXV does not apply to 30XA080 units).

Plug one side of the electrical connectors of the EXV labeled cables into their corresponding EXV plugs. Run the cables to the 30XA base unit, and plug the other side of the cable connectors into their corresponding EXV leads. Coil excess cables and wire tie in a convenient location.

11.To reconnect the flow switch cable, use the accessorysupplied cable assembly (3000A or 3100A: Item 4). Take one cable assembly and label both ends with “CWFS.” Plug one side of the electrical connector of the labeled cable into the flow switch plug. Run the cable to the base unit, and plug the other side of the cable connector into the flow switch lead. Coil excess cables and wire tie in a convenient location.

10