Carrier 00EFN900003000A User Manual
Remote Cooler Accessory
Installation Instructions
Part Numbers 00EFN900003000A, 00EFN900003100A
30XA080-350
60 Hz
CONTENTS
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . 1
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-16
Cooler and Economizer Removal. . . . . . . . . . . . . . . . . 4
Remote Cooler and Economizer Installation. . . . . 10
SAFETY CONSIDERATIONS
Installing, starting up, and servicing air-conditioning
equipment 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-conditioning equipment, 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-tag all
disconnects.
GENERAL
The remote cooler accessory allows for the indoor relocation of the cooler on 30XA080-350 units as another means of
freeze protection. When the cooler is located in a heated space,
an anti-freeze solution 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-installed cooler 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-installed suction service valve option.
• Condenser coil type:
— Aluminum fin and copper tube
— Pre-coat aluminum fin and copper tube
— E-coat aluminum fin and copper tube
— Copper fin and copper tube
— E-coat copper 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 and 30XA140-160: circuit
B (length determined by installation). See Tables 3A and 3B
for pipe sizes.
• Schedule 40 steel pipe for 30XA140-160: circuit A and
30XA180-350: 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 for 30XA180-350)
• ASME B16.5 Class 600 pipe flange (4 in. [102 mm]) with
field-modified extra mounting hole (one needed for
30XA260-300, two needed for 325, 350)
• Flange mounting hardware
• Extra flange gaskets (if necessary)
The 30XA units use R-134a refrigerant. 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 handle
R-134a refrigerant 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
Ta b 5 c
Catalog No. 04-53300012-01 Printed in U.S.A. Form 30XA-7SI Pg 1 1-07 Replaces: New
Table 2 — Accessory Package Contents
ACCESSORY PACKAGE
PART NO.
00EFN900003000A
00EFN900003100A
ITEM NO. DESCRIPTION PART NO. QTY
1 Economizer shutoff valve - 1
2 Liquid line shutoff valve - 1
3 5 Wire jacketed cable RM02EJ200
4 Cable assembly 32GB404694 5
5 Junction box HX30FZ001 2
6 Junction box cover HX38ZZ001 2
7 M6 Screws 00PPN500000302A 8
8 Cooler pipe flange - 3
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 - 1
2 Liquid line shutoff valve - 1
3 5 Wire jacketed cable RM02EJ200
4 Cable assembly 32GB404694 5
5 Junction box HX30FZ001 2
6 Junction box cover HX38ZZ001 2
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
1
/8 in. (29 mm) 00PPG000023501A 2
3
/8 in. (35 mm) EP71BA393 2
1
/8 in. (79 mm) 00PSN500091400A 2
1
/8 in. (29 mm) 00PPG000023501A 2
3
/8 in. (35 mm) EP71BA393 2
200 ft
(61 m)
200 ft
(61 m)
Choose a space that can support the weight of the cooler and
economizer with service clearances and area for refrigerant
piping. Field-supplied piping 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-bends or
street elbows, a substantial amount of oil can be trapped in the
U-bend during 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,
1
2
/8, 25/8, 31/
1
2, 2
/2, 3, 31/2, 4 Schedule 40 Steel
8
Refrigeration copper
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 LOCAT ION
LEGEND
............ Liquid Line
Economizer Line
Suction Line
a30-4509
LEGEND
............ Liquid Line
Economizer Line
Suction Line
a30-4510
30X A
REMOTE COOLER
Fig. 1 — 30XA Unit and Cooler Level, Piping Parallel (Single Circuit Shown)
INDOOR LOCAT ION
30XA
15 FT MAX
REMOTE COOLER
Fig. 2 — 30XA Unit and Cooler Level, Piping Elevated (Single Circuit Shown)
SUCTION
SERVICE
VALV E
SUCTION
SERVICE
VALV E
ECONOMIZER
ECONOMIZER
LEGEND
............ Liquid Line
Economizer Line
Suction Line
30X A
INDOOR LOCATION
15 FT MAX
REMOTE COOLER
a30-4511
Fig. 3 — 30XA Unit with Cooler Located Below Unit (Single Circuit Shown)
3
SUCTION
SE R VICE
V A L VE
ECONOMIZER
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-5B for 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-supplied piping, 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
UNIT
SIZE
080 3
090 3
100 31/
110 31/
120 31/
140 43
160 43
SUCTION LINE
Circuit A
(in.)
1
/
8
1
/
8
8
8
8
Circuit B
(in.)
31/
8
31/
8
31/
8
31/
8
31/
8
1
/
8
1
/
8
180 4423
200 4423
220 4423
240 4423
260 442
280 442
300 442
325 442
350 442
DOUBLE SUCTION RISERS
Circuit A Circuit B
Riser A
(in.)
Riser B
(in.)
15/
15/
15/
15/
15/
23
23
1
1
1
1
1
25/
8
8
8
8
8
/
2
/
2
/
2
/
2
/
2
8
25/
8
25/
8
25/
8
25/
8
1
/
2
1
/
2
1
/
2
1
/
2
1
/
2
1
/
2
323
323
323
32
32
Riser A
(in.)
15/
15/
15/
15/
15/
15/
15/
8
8
8
8
8
8
8
Riser B
(in.)
25/
25/
25/
25/
25/
25/
25/
23
23
23
23
1
/
2
1
/
2
8
8
8
8
8
8
8
1
/
2
1
/
2
1
/
2
1
/
2
1
/
2
1
/
2
1
/
2
31
31
COOLER
LIQUID LINE
Circuit A
(in.)
11/
8
11/
8
11/
8
11/
8
11/
8
13/
8
13/
8
13/
8
13/
8
13/
8
13/
8
15/
8
15/
8
15/
8
5
/
8
5
/
8
Circuit B
(in.)
11/
8
11/
8
11/
8
11/
8
11/
8
11/
8
11/
8
13/
8
13/
8
13/
8
13/
8
13/
8
13/
8
13/
8
15/
8
15/
8
CONDENSER
LIQUID LINE
Circuit A
(in.)
11/
8
11/
8
11/
8
11/
8
11/
8
13/
8
13/
8
13/
8
13/
8
13/
8
13/
8
15/
8
15/
8
15/
8
15/
8
15/
8
Circuit B
(in.)
11/
8
11/
8
11/
8
11/
8
11/
8
11/
8
11/
8
13/
8
13/
8
13/
8
13/
8
13/
8
13/
8
13/
8
15/
8
15/
8
ECONOMIZER
LINE
Circuit A
(in.)
Circuit B
——
7
/
8
7
/
8
7
/
8
7
/
8
11/
8
11/
8
11/
8
11/
8
11/
8
11/
8
11/
8
11/
8
11/
8
11/
8
11/
8
Table 4B — Refrigeration Line Sizes (SI)
30XA
UNIT
SIZE
SUCTION LINE
Circuit A
(mm)
Circuit B
(mm)
DOUBLE SUCTION RISERS
Circuit A Circuit B
Riser A
(mm)
Riser B
(mm)
Riser A
(mm)
Riser B
(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
COOLER
LIQUID LINE
Circuit A
(mm)
Circuit B
(mm)
CONDENSER
LIQUID LINE
Circuit A
(mm)
Circuit B
(mm)
ECONOMIZER
LINE
Circuit A
(mm)
Circuit B
(in.)
7
/
8
7
/
8
7
/
8
7
/
8
7
/
8
7
/
8
11/
11/
11/
11/
11/
11/
11/
11/
11/
(mm)
8
8
8
8
8
8
8
8
8
Table 5 — Cooler and Economizer Weights
30XA
UNIT SIZE
COOLER OPERATING
WEIGHT
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
ECONOMIZER WEIGHT
Circuit A Circuit B
5
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