Sterlco AquaSnap 30RAN010 User manual

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
PC 903 Catalog No. 533-00045 Printed in U.S.A. Form 30RA-12SI Pg 1 7-02 Replaces: 30RA-1SI
Book 2
Ta b 5 c
Installation Instructions
CONTENTS
Page
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . 1
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-24
Step 1 — Rig and Place the Unit. . . . . . . . . . . . . . . . . . 1
• RIGGING
• PLACING UNIT
• MOUNTING UNIT
Step 2 — Check Compressor Mounting . . . . . . . . . . 3
Step 3 — Cooler Fluid and Drain Piping
Connections (Units Without
Hydronic Packages). . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
• PREPARATION FOR YEAR-ROUND
OPERATION
• PREPARATION FOR WINTER SHUTDOWN
Step 4 — Cooler Fluid and Drain Piping
Connections (Units With Factory-Installed
Hydronic Packages). . . . . . . . . . . . . . . . . . . . . . . . . . . 12
• WATER SYSTEM OVERVIEW
•AIRSEPARATION
• WATER CONNECTIONS
• WATER SYSTEM CLEANING
• SYSTEM PRESSURIZATION
• FILLING THE SYSTEM
Step 5 — Make Electrical Connections . . . . . . . . . . 18
• POWER SUPPLY
• POWER WIRING
• FIELD CONNECTIONS
Step 6 — Install Accessories . . . . . . . . . . . . . . . . . . . . 18
• ELECTRICAL
Step 7 — Refrigerant Circuit. . . . . . . . . . . . . . . . . . . . . 24
• LEAK TESTING
• DEHYDRATION
• REFRIGERANT CHARGE
APPENDIX A (Pressure Drop Curves,
30RA010-055) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25-27
SAFETY CONSIDERATIONS
Installing, starting up, and servicing air-conditioning equip-
ment can be hazardous due to system pressures, electrical
components, and equipment location (roofs, elevated struc-
tures, etc.).
Only trained, qualified installers and service mechanics
should install, start up, and service this equipment (Fig. 1).
Untrained personnel can perform basic maintenance func-
tions such as cleaning coils. All other operations should be
performed by trained service personnel.
When working on the 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.
• Keep quenching cloth and fire extinguisher nearby when
brazing.
• Use care in handling, rigging, and setting bulky
equipment. See Tables 1A-1D for Physical Data. Refer
to Fig. 2 for unit weights.
INSTALLATION
Step 1 — Rig and Place the Unit
RIGGING — Preferred method is with spreader bars from
above the unit. Use hooks in lifting holes. Rig at a single point
with 4 cables or use spreader bars. All panels must be in place
when rigging. See rigging label on unit for details concerning
shipping weights, distance between lifting holes, center of
gravity, and lifting ring dimensions. See Fig. 3.
If overhead rigging is not possible, place chiller on skid or
pad for rolling or dragging. When rolling, use a minimum of
3 rollers. When dragging, pull the pad. Do not apply force to
the unit. When in final position, raise from above to lift unit
off pad.
PLACING UNIT — There must be at least 3 ft (.9 m) for ser-
vice and for unrestricted airflow on all non-coil sides of unit,
and a minimum of 3.5 ft (1.1 m) clear air space on coil sides.
For multiple units, allow 8 ft (2.48 m) separation between units
for airflow and service.
MOUNTING UNIT — When unit is in proper location, use
of mounting holes in base rails is recommended for securing
unit to supporting structure, or for mounting unit on vibration
isolators if required. See Fig. 3. Fasteners for mounting unit are
field supplied. Be sure unit is level to within 1/8in. per foot for
proper oil return to compressor.
ELECTRIC SHOCK HAZARD
Open all remote disconnects before servicing
this equipment.
All panels must be in place when rigging.
30RAN010-055
AquaSnapTM Liquid Chillers
With ComfortLinkTM Controls
50/60 Hz
Fig. 1 — Typical 30RA Unit (010-018 Shown)

2
CONTROL
BOX END
B
C
A
D
60 Hz
STD UNITS (without hydronic package)
SINGLE PUMP UNITS
DUAL PUMP UNITS
50 Hz
STD UNITS (without hydronic package)
SINGLE PUMP UNITS
DUAL PUMP UNITS
LEGEND
30RA
SIZE
POUNDS —ALUMINUM 30RA
SIZE
POUNDS —COPPER
ABCDTota l
Weight ABCDTot al Weight
010 182 210 255 299 946 010 194 231 274 326 1025
015 197 245 291 335 1068 015 216 280 321 382 1199
018 206 268 377 358 1209 018 220 303 411 404 1338
022 336 451 381 355 1523 022 364 521 418 410 1713
025 350 464 395 380 1589 025 380 532 432 436 1780
030 378 518 409 400 1705 030 409 606 441 474 1930
035 748 642 604 850 2844 035 854 721 691 958 3224
040 763 653 616 882 2914 040 869 731 702 992 3294
045 860 709 746 903 3218 045 965 790 833 1011 3599
050 876 721 770 946 3313 050 978 805 859 1051 3693
055 977 753 831 954 3515 055 1096 857 931 1082 3966
30RA
SIZE
KILOGRAMS —ALUMINUM 30RA
SIZE
KILOGRAMS —COPPER
ABCDTota l
Weight ABCDTot a l Weight
010 83 95 116 136 430 010 88 105 124 148 465
015 89 111 132 152 484 015 98 127 146 173 544
018 93 122 171 162 548 018 100 137 186 183 606
022 152 205 173 161 691 022 165 236 190 186 777
025 159 210 179 172 720 025 172 241 196 198 807
030 171 235 186 181 773 030 186 275 200 215 876
035 339 291 274 386 1290 035 387 327 313 435 1462
040 346 296 279 400 1321 040 394 332 318 450 1494
045 390 322 338 410 1460 045 438 358 378 459 1633
050 397 327 349 429 1502 050 444 365 390 477 1676
055 443 342 377 433 1595 055 497 389 422 491 1799
30RA
SIZE
POUNDS —ALUMINUM 30RA
SIZE
POUNDS —COPPER
ABCDTotal
Weight ABCDTotal Weight
010 209 241 293 343 1086 010 221 262 312 370 1165
015 223 277 329 379 1208 015 242 312 359 426 1339
018 230 299 421 399 1349 018 244 334 455 445 1478
022 367 492 416 388 1663 022 395 562 453 443 1853
025 381 505 430 413 1729 025 411 573 467 469 1920
030 409 561 443 433 1845 030 440 649 475 507 2070
035 801 687 646 910 3044 035 907 766 733 1018 3424
040 815 698 658 943 3114 040 921 776 744 1053 3494
045 913 753 792 959 3418 045 1018 834 879 1067 3799
050 929 765 816 1003 3513 050 1031 849 905 1108 3893
055 1033 796 878 1008 3715 055 1152 900 978 1136 4166
30RA
SIZE
KILOGRAMS —ALUMINUM 30RA
SIZE
KILOGRAMS —COPPER
ABCDTo t a l
Weight ABCDTot al Weight
010 95 109 133 156 493 010 108 129 152 181 570
015 101 126 149 172 548 015 117 151 174 206 648
018 104 136 191 181 612 018 117 161 218 215 711
022 166 224 189 176 755 022 187 268 215 211 881
025 173 229 195 187 784 025 194 272 221 224 911
030 185 254 201 196 836 030 208 308 224 241 981
035 363 311 293 413 1380 035 422 356 341 474 1593
040 370 316 298 427 1411 040 429 361 346 490 1626
045 414 342 359 435 1550 045 473 387 408 496 1764
050 421 347 370 455 1593 050 479 394 421 514 1808
055 468 361 398 458 1685 055 533 417 453 527 1930
30RA
SIZE
POUNDS —ALUMINUM 30RA
SIZE
POUNDS —COPPER
ABCDTotal
Weight ABCDTot al Weight
010 226 262 316 372 1176 010 238 283 335 399 1255
015 238 299 353 408 1298 015 257 334 383 455 1429
018 244 320 448 427 1439 018 258 355 482 473 1568
022 385 521 437 410 1753 022 413 591 474 465 1943
025 399 533 451 436 1819 025 429 601 488 492 2010
030 427 590 462 456 1935 030 458 678 494 530 2160
035 825 707 666 936 3134 035 931 786 753 1044 3514
040 840 717 678 969 3204 040 946 795 764 1079 3584
045 938 773 813 984 3508 045 1043 854 900 1092 3889
050 953 784 837 1029 3603 050 1055 868 926 1134 3983
055 1057 816 899 1033 3805 055 1176 920 999 1161 4256
30RA
SIZE
KILOGRAMS —ALUMINUM 30RA
SIZE
KILOGRAMS —COPPER
ABCDTota l
Weight ABCDTot a l Weight
010 103 119 144 169 535 010 108 129 152 181 570
015 108 135 160 185 588 015 117 151 174 206 648
018 110 146 203 194 653 018 117 161 218 215 711
022 174 237 198 186 795 022 187 268 215 211 881
025 181 241 204 198 824 025 194 272 221 224 911
030 193 268 210 207 878 030 208 308 224 241 981
035 374 320 302 425 1421 035 422 356 341 474 1593
040 381 325 307 440 1453 040 429 361 346 490 1626
045 425 351 368 447 1591 045 473 387 408 496 1764
050 432 356 380 466 1634 050 479 394 421 514 1808
055 479 370 408 469 1726 055 533 417 453 527 1930
30RA
SIZE
POUNDS —ALUMINUM 30RA
SIZE
POUNDS —COPPER
ABCDTota l
Weight ABCDTo ta l Weight
010 186 211 262 317 976 010 198 232 281 346 1057
015 190 242 456 304 1192 015 200 280 494 349 1323
018 205 268 378 358 1209 018 219 304 412 403 1338
022 340 453 388 374 1555 022 368 520 425 431 1744
025 354 468 410 398 1630 025 382 534 448 456 1820
032 746 641 604 848 2839 032 851 717 691 960 3219
035 768 652 620 911 2951 035 872 729 708 1022 3331
042 867 714 761 937 3279 042 968 795 851 1045 3659
045 886 729 800 985 3400 045 1009 823 904 1115 3851
30RA
SIZE
KILOGRAMS —ALUMINUM 30RA
SIZE
KILOGRAMS —COPPER
ABCDTota l
Weight ABCDTot a l Weight
010 84 96 119 144 443 010 90 105 127 157 479
015 86 110 207 138 541 015 91 127 224 158 600
018 93 122 171 162 548 018 99 138 187 183 607
022 154 205 176 170 705 022 167 236 193 195 791
025 161 212 186 181 740 025 173 242 203 207 825
032 338 291 274 385 1288 032 386 325 313 435 1459
035 348 296 281 413 1338 035 396 331 321 464 1512
042 393 324 345 425 1487 042 439 361 386 474 1660
045 402 331 363 447 1543 045 458 373 410 506 1747
30RA
SIZE
POUNDS —ALUMINUM 30RA
SIZE
POUNDS —COPPER
ABC D Total
Weight ABCDTo ta l Weight
010 213 241 300 362 1116 010 225 262 319 391 1197
015 212 270 510 340 1332 015 222 308 548 385 1463
018 229 299 422 399 1349 018 243 335 456 444 1478
022 371 494 423 408 1695 022 399 561 460 465 1884
025 384 508 445 432 1770 025 412 574 483 490 1960
032 799 686 647 908 3039 032 904 762 734 1020 3419
035 820 696 662 973 3151 035 924 773 750 1084 3531
042 920 758 807 994 3479 042 1021 839 897 1102 3859
045 938 772 847 1043 3600 045 1061 866 951 1173 4051
30RA
SIZE
KILOGRAMS —ALUMINUM 30RA
SIZE
KILOGRAMS —COPPER
ABCDTota l
Weight ABCDTot a l Weight
010 96 110 136 165 507 010 102 119 144 178 543
015 96 123 231 154 604 015 101 140 248 174 663
018 104 136 191 181 612 018 110 152 207 202 671
022 168 223 192 185 768 022 181 254 209 210 854
025 175 230 202 197 804 025 187 260 219 223 889
032 362 311 293 412 1378 032 410 345 332 462 1549
035 372 316 300 441 1429 035 420 351 340 492 1603
042 417 344 366 451 1578 042 463 381 407 500 1751
045 426 350 384 473 1633 045 482 392 431 532 1837
30RA
SIZE
POUNDS —ALUMINUM 30RA
SIZE
POUNDS —COPPER
ABC D Total
Weight ABCDTo ta l Weight
010 213 241 300 362 1116 010 241 282 342 421 1287
015 212 270 510 340 1332 015 235 329 580 410 1553
018 229 299 422 399 1349 018 257 356 483 472 1568
022 371 494 423 408 1695 022 417 589 481 488 1974
025 384 508 445 432 1770 025 430 601 505 514 2050
032 799 686 647 908 3039 032 928 782 753 1046 3509
035 820 696 662 973 3151 035 948 792 770 1111 3621
042 920 758 807 994 3479 042 1045 858 918 1128 3949
045 938 772 847 1043 3600 045 1085 885 972 1199 4141
30RA
SIZE
KILOGRAMS —ALUMINUM 30RA
SIZE
KILOGRAMS —COPPER
ABCDTota l
Weight ABCDTot a l Weight
010 96 110 136 165 507 010 110 128 155 191 584
015 96 123 231 154 604 015 107 149 263 186 706
018 104 136 191 181 612 018 116 162 219 214 711
022 168 223 192 185 768 022 189 267 218 221 895
025 175 230 202 197 804 025 195 273 229 233 930
032 362 311 293 412 1378 032 421 354 341 474 1590
035 372 316 300 441 1429 035 430 360 349 504 1643
042 417 344 366 451 1578 042 474 390 417 512 1793
045 426 350 384 473 1633 045 492 401 441 544 1878
Aluminum —Aluminum Condenser Coil Fins
Copper —Copper Condenser Coil Fins
Fig. 2 —Unit Operating Weights

3
Step 2 —Check Compressor Mounting —As
shipped, each compressor is held down by 4 bolts. After unit is
installed, verify mounting bolt torque 12 to14 ft-lb.
Step 3 —Cooler Fluid and Drain Piping Con-
nections (Units Without Hydronic Packages) —
These chillers are supplied with factory-installed strainer
(including blow-down valve) in the entering fluid piping and
flow switch in the leaving fluid piping. Flow switch wiring is
factory installed.
Piping connections are located on the left side of the chiller
when facing the control panel for 010-030 sizes and at the end
opposite the control panel for 032-055 sizes. See Fig. 4-9
depending on model.
All sizes have FPT connections as shown in the Physical
Data tables. Provide a means of venting air from the high point
of the field-installed piping as required. Install field-supplied
drains in both the entering and leaving fluid connections.
After field piping is complete, freeze-up protection is rec-
ommended using inhibited ethylene glycol or other suitable in-
hibited antifreeze solution and electric heat tapes in areas
where piping is exposed to low ambient temperatures (34 F
[1 °C] or below). Heat tapes should possess a rating for area
ambients and be covered with a suitable thickness of closed-
cell insulation. Route power for heating tapes from a separately
fused disconnect. Identify disconnect as heat tape power source
with a warning that power must not be turned off except when
unit is being serviced.
The cooler drain connection is at the opposite end from the
compressor (see Fig. 4-9). Insulate the drain piping (in the
same manner as the chilled water piping) for at least one ft
(305 mm) from cooler.
PREPARATION FOR YEAR-ROUND OPERATION — If
unit is in operation year-round, add sufficient inhibited ethyl-
ene glycol or other suitable inhibited antifreeze solution to
chilled water to prevent freezing under low-ambient operating
conditions. Consult local water treatment specialist on charac-
teristics of water and recommended inhibitor.
PREPARATION FOR WINTER SHUTDOWN — Do not
shut off electrical disconnect during off-season shutdown. At
end of cooling season:
1. Position LOCAL/OFF/REMOTE switch to OFF.
2. Drain water from system.
3. Replace drain plug and put 2 gallons (8 liters) of inhibited
ethylene glycol (or other suitable inhibited anti-freeze) in
cooler to prevent freezing of residual water.
4. At the beginning of the next cooling season, refill cooler
and add recommended inhibitor.
Fig. 3 —Unit Rigging Label Detail
*C —Copper Finned Condenser Coil.
UNIT
MAX
SHIP WT
W/O
PACKAGING
MAX
SHIP WT
W/
PACKAGING
LIFTING HOLES CENTER OF
GRAVITY
Lb Kg Lb Kg in. mm in. mm in. mm in. mm
30RA032 2791 1266 2965 1345 105.44 2678 87.00 2210 43.87 1114 46.00 1168
30RA032 C* 3171 1438 3345 1517
30RA035-60Hz 2796 1268 2970 1347 105.44 2678 87.00 2210 43.87 1114 46.00 1168
30RA035-60Hz C* 3176 1441 3350 1520
30RA035-50Hz 2896 1314 3070 1393 105.44 2678 87.00 2210 43.87 1114 46.00 1168
30RA035-50Hz C* 3276 1486 3450 1565
30RA040 2856 1295 3030 1374 105.44 2678 87.00 2210 43.87 1114 46.00 1168
30RA040 C* 3236 1468 3410 1547
30RA042 3231 1466 3405 1544 105.44 2678 87.00 2210 43.75 1111 45.00 1143
30RA042 C* 3611 1638 3785 1717
30RA045-60Hz 3163 1435 3337 1514 105.44 2678 87.00 2210 43.75 1111 45.00 1143
30RA045-60Hz C* 3544 1608 3718 1686
30RA045-50Hz 3345 1517 3519 1596 105.44 2678 87.00 2210 43.75 1111 45.00 1143
30RA045-50Hz C* 3796 1722 3970 1801
30RA050 3251 1475 3425 1554 105.44 2678 87.00 2210 43.75 1111 45.00 1143
30RA050 C* 3631 1647 3805 1726
30RA055 3444 1562 3618 1641 105.44 2678 87.00 2210 43.75 1111 45.00 1143
30RA055 C* 3895 1767 4069 1846
UNIT
MAX
SHIP WT
W/O
PACKAGING
MAX
SHIP WT
W/
PACKAGING
LIFTING HOLES CENTER OF
GRAVITY
Lb Kg Lb Kg in. mm in. mm in. mm in. mm
30RA010-60Hz 937 425 1000 454 78.80 2001 40.00 1016 33.75 857 22.00 559
30RA010-60Hz C* 1016 461 1079 489
30RA010-50Hz 967 439 1030 467 78.80 2001 40.00 1016 33.75 857 22.22 559
30RA010-50Hz C* 1048 475 1111 504
30RA015-60Hz 1055 479 1118 507 78.80 2001 40.00 1016 34.00 864 21.50 546
30RA015-60Hz C* 1186 538 1249 567
30RA015-50Hz 1179 535 1242 563 78.80 2001 40.00 1016 29.75 756 17.87 454
30RA015-50Hz C* 1310 594 1373 623
30RA018 1193 541 1256 570 78.80 2001 40.00 1016 32.12 816 20.12 511
30RA018 C* 1322 600 1385 628
30RA022-60Hz 1503 682 1591 722 105.44 2678 40.00 1016 42.25 1073 19.75 502
30RA022-60Hz C* 1693 768 1781 808
30RA022-50Hz 1535 696 1623 736 105.44 2678 40.00 1016 42.25 1073 19.75 502
30RA022-50Hz C* 1724 782 1812 822
30RA025-60Hz 1565 710 1653 750 105.44 2678 40.00 1016 42.25 1073 19.75 502
30RA025-60Hz C* 1756 797 1844 836
30RA025-50Hz 1606 728 1694 768 105.44 2678 40.00 1016 42.25 1073 19.75 502
30RA025-50Hz C* 1796 815 1884 855
30RA030 1677 761 1765 801 105.44 2678 40.00 1016 42.25 1073 19.75 502
30RA030 C* 1902 863 1990 903

4
Table 1A —Physical Data, 30RA —60 Hz English
Table 1B —Physical Data, 30RA —50 Hz English
LEGEND
TXV —Thermostatic Expansion Valve
*Flow switch and strainer are standard on all units, with or without hydronic package.
NOMINAL INPUT HP FOR COMPRESSORS
UNIT 30RA 010 015 018 022 025 030 035 040 045 050 055
REFRIGERANT TYPE R-22, TXV Controlled System
Refrigerant Charge (lb) Ckt A/Ckt B 18/— 27/— 36/— 37/— 38/— 48/— 44/30 45/30 44/44 45/45 55/55
COMPRESSORS Scroll, Hermetic
Quantity 11222233444
Speed (Rpm) 3500
(Qty) Ckt A (1) SM125 (1) SM185 (2) SM110 (1) SM115,
(1) SM160 (2) SM160 (2) SM185 (1) SM115, (1) SM160 (2) SM160 (1) SM125, (1) SM160 (2) SM160 (2) SM185
(Qty) Ckt B ——————(1)SM185(1)SM185
(1) SM125,
(1) SM160 (2) SM160 (2) SM185
Oil Charge (Compressor/Pt) SM110/5.7, SM115/6.7, SM125/6.7, SM160/7.0, SM185/11.6
No. Capacity Steps
Standard 11222233444
Optional (Maximum) 22333344555
Minimum Capacity Step (%)
Standard 100 100 50 42 50 50 25 32 22 25 25
Optional 69 79 32 27 38 39 16 24 15 19 20
COOLER Welded, Direct-Expansion Plate Heat Exchanger
Net Fluid Volume (gal) 1.12 1.61 1.86 2.41 2.84 3.40 6.30 7.00 6.55 7.44 8.56
Maximum Refrigerant Pressure (psig) 450 450 450 450 450 450 450 450 450 450 450
Maximum Fluid Side Pressure
Without Pump(s) (psig) 150 150 150 150 150 150 150 150 150 150 150
Maximum Fluid Side Pressure
With Pump(s) (psig) 150 150 150 150 150 150 150 150 150 150 150
FLUID CONNECTIONS (in.)
Inlet and Outlet, FPT 2222222
1/221/221/221/221/2
Drain (NPT) 1/21/21/21/21/21/21/21/21/21/21/2
CONDENSER FANS
Standard Low Noise Type
Fan Speed (Rpm)
Standard/Low Noise 1140/570 1140/570 1140/570 —/850 —/850 —/850 —/850 —/850 —/850 —/850 —/850
No. Blades...Diameter (in.)
Ckt A/Ckt B 15...30/— 15...30/— 15...30/— 11...30/— 11...30/— 11...30/— 11...30/
11...30
11...30/
11...30
11...30/
11...30
11...30/
11...30
11...30/
11...30
No. Fans...Total kW 1...1.8 1...1.8 1...1.8 2...2.0 2...2.0 2...2.0 2...2.0 (A),
1...1.8 (B)
2...2.0 (A),
1...1.8 (B) 4...4.0 4...4.0 4...4.0
Total Airflow (Cfm) 10,500 10,500 10,500 13,600 13,600 14,500 21,000 21,000 27,300 27,300 29,000
CONDENSER COILS
Quantity...No. Rows 1...2 1...3 1...3 1...3 1...3 1...3 2...3 2...3 2...3 2...3 2...3
Total Face Area (sq ft) 23 23 23 32 32 40 55 55 64 64 80
HYDRONIC MODULE (Optional)* Pump(s), Strainer W/Blowdown Valve, Expansion Tank, Pressure Gages, Drain and Vent Plugs, Flow Switch, and Balance Valve
Pump Single or Dual, Close-Coupled Centrifugal Pump(s), 3500 Rpm
Expansion Tank Volume (gal) 4.4 10.3
UNIT 30RA 010 015 018 022 025 032 035 042 045
REFRIGERANT TYPE R-22, TXV Controlled System
Refrigerant Charge (lb) Ckt A/Ckt B 18/— 27/— 36/— 37/— 38/— 44/30 44/30 44/44 44/44
COMPRESSORS Scroll, Hermetic
Quantity 122223344
Speed (Rpm) 2900
(Qty) Ckt A (1) SM160 (2) SM110 (2) SM125 (2) SM160 (2) SM185 (1) SM115,
(1) SM160 (2) SM185 (2) SM160 (2) SM185
(Qty) Ckt B —————(1)SM185(1)SM185(2)SM160(2)SM185
Oil Charge (Compressor/Pt) SM110/5.7, SM115/6.7, SM125/6.7, SM160/7.0, SM185/11.6
No. Capacity Steps
Standard 122223344
Optional (Maximum) 233334455
Minimum Capacity Step (%)
Standard 1005050504025332525
Optional 71 28 31 35 37 15 25 18 19
COOLER Welded, Direct-Expansion Plate Heat Exchanger
Net Fluid Volume (gal) 1.12 1.61 1.86 2.41 2.84 5.77 6.55 6.77 6.55
Maximum Refrigerant Pressure (psig) 450 450 450 450 450 450 450 450 450
Maximum Fluid Side Pressure
Without Pump(s) (psig) 150 150 150 150 150 150 150 150 150
Maximum Fluid Side Pressure
With Pump(s) (psig) 150 150 150 150 150 150 150 150 150
FLUID CONNECTIONS (in.)
Inlet and Outlet, FPT 222222
1/221/221/221/2
Drain (NPT) 1/21/21/21/21/21/21/21/21/2
CONDENSER FANS
Standard Low Noise Type
Fan Speed (Rpm)
Standard/Low Noise 950/475 950/475 950/475 —/700 —/700 —/700 —/700 —/700 —/700
No. Blades...Diameter (in.)
Ckt A/Ckt B 15...30/— 15...30/— 15...30/— 11...30/— 11...30/— 11...30/
11...30
11...30/
11...30
11...30/
11...30
11...30/
11...30
No. Fans...Total kW 1...1.8 1...1.8 1...1.8 2...2.0 2...2.0 2...2.0 (A),
1...1.8 (B)
2...2.0 (A),
1...1.8 (B) 4...4.0 4...4.0
Total Airflow (Cfm) 8,750 8,750 8,750 11,330 11,330 17,500 17,500 22,750 22,750
CONDENSER COILS
Quantity...No. Rows 1...2 1...3 1...3 1...3 1...3 2...3 2...3 2...3 2...3
Total Face Area (sq ft) 23 23 23 32 32 55 55 64 64
HYDRONIC MODULE (Optional)* Pump(s), Strainer W/Blowdown Valve, Expansion Tank, Pressure Gages, Drain and Vent Plugs, Flow Switch, and Balance Valve
Pump Single or Dual, Close-Coupled Centrifugal Pump(s), 2900 Rpm
Expansion Tank Volume (gal) 4.4 10.3
COMPRESSOR 60 Hz 50 Hz
SM110 12.5 10.5
SM115 13.5 11.2
SM125 14.7 12.0
SM160 19.1 15.6
SM185 21.8 18.3

5
Table 1C —Physical Data, 30RA —60 Hz SI
Table 1D —Physical Data, 30RA —50 Hz SI
LEGEND
TXV —Thermostatic Expansion Valve
*Flow switch and strainer are standard on all units, with or without hydronic package.
NOMINAL INPUT HP FOR COMPRESSORS
UNIT 30RA 010 015 018 022 025 030 035 040 045 050 055
REFRIGERANT TYPE R-22, TXV Controlled System
Refrigerant Charge (kg) Ckt A/Ckt B 8.2/— 12.2/— 16.3/— 16.8/— 17.2/— 21.8/— 20.0/13.6 20.4/13.6 20.0/20.0 20.4/20.4 25.0/25.0
COMPRESSORS Scroll, Hermetic
Quantity 11222233444
Speed (r/s) 58.3
(Qty) Ckt A (1) SM125 (1) SM185 (2) SM110 (1) SM115,
(1) SM160 (2) SM160 (2) SM185 (1) SM115, (1) SM160 (2) SM160 (1) SM125, (1) SM160 (2) SM160 (2) SM185
(Qty) Ckt B ——————(1)SM185(1)SM185
(1) SM125,
(1) SM160 (2) SM160 (2) SM185
Oil Charge (Compressor/L) SM110/2.7, SM115/3.2, SM125/3.2, SM160/3.3, SM185/5.5
No. Capacity Steps
Standard 11222233444
Optional (Maximum) 22333344555
Minimum Capacity Step (%)
Standard 100 100 50 42 50 50 25 32 22 25 25
Optional 69 79 32 27 38 39 16 24 15 19 20
COOLER Welded, Direct-Expansion Plate Heat Exchanger
Net Fluid Volume (L) 4.22 6.08 7.03 9.12 10.75 12.84 23.84 26.49 24.79 28.12 32.34
Maximum Refrigerant Pressure (kPa) 3103 3103 3103 3103 3103 3103 3103 3103 3103 3103 3103
Maximum Fluid Side Pressure
Without Pump(s) (kPa) 1034 1034 1034 1034 1034 1034 1034 1034 1034 1034 1034
Maximum Fluid Side Pressure
With Pump(s) (kPa) 1034 1034 1034 1034 1034 1034 1034 1034 1034 1034 1034
FLUID CONNECTIONS (mm)
Inlet and Outlet, FPT 50.8 50.8 50.8 50.8 50.8 50.8 63.5 63.5 63.5 63.5 63.5
Drain (NPT) 12.7 12.7 12.7 12.7 12.7 12.7 12.7 12.7 12.7 12.7 12.7
CONDENSER FANS
Standard Low Noise Type
Fan Speed (r/s)
Standard/Low Noise 19/9.5 19/9.5 19/9.5 —/14.2 —/14.2 —/14.2 —/14.2 —/14.2 —/14.2 —/14.2 —/14.2
No. Blades...Diameter (mm)
Ckt A/Ckt B 15...762/— 15...762/— 15...762/— 11...762/— 11...762/— 11...762/— 11...762/
15...762
11...762/
15...762
11...762/
11...762
11...762/
11...762
11...762/
11...762
No. Fans...Total kW 1...1.8 1...1.8 1...1.8 2...2.0 2...2.0 2...2.0 2...2.0 (A),
1...1.8 (B)
2...2.0 (A),
1...1.8 (B) 4...4.0 4...4.0 4...4.0
Total Airflow (L/s) 4,955 4,955 4,955 6,419 6,419 6,843 9,595 9,595 12,884 12,884 13,687
CONDENSER COILS
Quantity...No. Rows 1...2 1...3 1...3 1...3 1...3 1...3 2...3 2...3 2...3 2...3 2...3
Total Face Area (sq m) 2.14 2.14 2.14 2.97 2.97 3.72 5.11 5.11 5.95 5.95 7.43
HYDRONIC MODULE (Optional)* Pump(s), Strainer W/Blowdown Valve, Expansion Tank, Pressure Gages, Drain and Vent Plugs, Flow Switch, and Balance Valve
Pump Single or Dual, Close-Coupled Centrifugal Pump(s), 58.3 r/s
Expansion Tank Volume (L) 16.5 39
UNIT 30RA 010 015 018 022 025 032 035 042 045
REFRIGERANT TYPE R-22, TXV Controlled System
Refrigerant Charge (kg) Ckt A/Ckt B 8.2/— 12.2/— 16.3/— 16.8/— 17.2/— 20.0/13.6 20.0/13.6 20.0/20.0 20.0/20.0
COMPRESSORS Scroll, Hermetic
Quantity 122223344
Speed (r/s) 48.3
Quantity —Ckt A (1) SM160 (2) SM110 (2) SM125 (2) SM160 (2) SM185 (1) SM115,
(1) SM160 (2) SM185 (2) SM160 (2) SM185
Quantity —Ckt B — — — — — (1) SM185 (1) SM185 (2) SM160 (2) SM185
Oil Charge (Compressor/L) SM110/2.7, SM115/3.2, SM125/3.2, SM160/3.3, SM185/5.5
No. Capacity Steps
Standard 122223344
Optional (Maximum) 233334455
Minimum Capacity Step (%)
Standard 100 50 50 50 50 25 33 25 25
Optional 71 28 31 35 37 15 25 18 19
COOLER Welded, Direct-Expansion Plate Heat Exchanger
Net Fluid Volume (L) 4.22 6.08 7.03 9.12 10.75 21.82 24.77 21.82 24.77
Maximum Refrigerant Pressure (psig) 3103 3103 3103 3103 3103 3103 3103 3103 3103
Maximum Fluid Side Pressure
Without Pump(s) (kPa) 1034 1034 1034 1034 1034 1034 1034 1034 1034
Maximum Fluid Side Pressure
With Pump(s) (kPa) 1034 1034 1034 1034 1034 1034 1034 1034 1034
FLUID CONNECTIONS (mm)
Inlet and Outlet, FPT 50.8 50.8 50.8 50.8 50.8 63.5 63.5 63.5 63.5
Drain (NPT) 12.7 12.7 12.7 12.7 12.7 12.7 12.7 12.7 12.7
CONDENSER FANS
Standard Low Noise Type
Fan Speed (r/s)
Standard/Low Noise 15.8/7.9 15.8/7.9 15.8/7.9 —/11.7 —/11.7 —/11.7 —/11.7 —/11.7 —/11.7
No. Blades...Diameter (mm)
Ckt A/Ckt B 15...762/— 15...762/— 15...762/— 11...762/— 11...762/— 11...762/
11...762
11...762/
15...762
11...762/
15...762
11...762/
11...762
No. Fans...Total kW 1...1.8 1...1.8 1...1.8 2...2.0 2...2.0 2...2.0 (A),
1...1.8 (B)
2...2.0 (A),
1...1.8 (B) 4...4.0 4...4.0
Total Airflow (L/s) 4,130 4,130 4,130 5,349 5,349 7,995 7,995 10,737 10,737
CONDENSER COILS
Quantity...No. Rows 1...2 1...3 1...3 1...3 1...3 2...3 2...3 2...3 2...3
Total Face Area (sq m) 2.14 2.14 2.14 2.97 2.97 5.11 5.11 5.95 5.95
HYDRONIC MODULE (Optional)* Pump(s), Strainer W/Blowdown Valve, Expansion Tank, Pressure Gages, Drain and Vent Plugs, Flow Switch, and Balance Valve
Pump Single or Dual, Close-Coupled Centrifugal Pump(s), 48.3 r/s
Expansion Tank Volume (L) 16.5 39
COMPRESSOR 60 Hz 50 Hz
SM110 12.5 10.5
SM115 13.5 11.2
SM125 14.7 12.0
SM160 19.1 15.6
SM185 21.8 18.3

6
Fig. 4 —Dimensions —30RA010,015,018 AquaSnap™Chiller
NOTES: 1. Unit must have clearances for airflow as follows:
Top — Do not restrict in any way. Coil Side — 31/2ft [1067 mm] from solid surface side.
Ends — 3 ft [914 mm] from solid surface (for service access).
2. Coil side clearance with accessory hail guard
installed is 3 ft [914 mm] to outside edge of hail guard top panel.
3. Coil side clearance for multiple chiller installation is
6 ft [1981 mm].
4. Flow switch is factory installed in leaving fluid piping.
Strainer is factory installed for entering fluid piping.

7
Fig. 5 —Dimensions —30RA022,025 AquaSnap™Chiller
NOTES: 1. Unit must have clearances for airflow as
follows: Top — Do not restrict in any way. Coil Side — 31/2ft [1067 mm] from solid
surface side. Ends — 3 ft [914 mm] from solid surface (for service access).
2. Coil side clearance with accessory hail
guard installed is 3 ft [914 mm] to outside edge of hail guard top panel.
3. Coil side clearance for multiple chiller
installation is 6 ft [1981 mm].
4. Flow switch is factory installed in leaving
fluid piping. Strainer is factory installed for entering fluid piping.

8
Fig. 6 —Dimensions —30RA030 AquaSnap™Chiller
NOTES: 1. Unit must have clearances for airflow as
follows: Top — Do not restrict in any way. Coil Side — 31/2ft [1067 mm] from solid
surface side. Ends — 3 ft [914 mm] from solid surface (for service access).
2. Coil side clearance with accessory hail
guard installed is 3 ft [914 mm] to out- side edge of hail guard top panel.
3. Coil side clearance for multiple chiller
installation is 6 ft [1981 mm].
4. Flow switch is factory installed in leaving
fluid piping. Strainer is factory installed for entering fluid piping.

9
Fig. 7 —Dimensions —30RA032-040 AquaSnap™Chiller
NOTES: 1. Unit must have clearances for airflow as follows:
Top — Do not restrict in any way. Coil Side — 31/2ft [1067 mm] from solid surface side.
Ends — 3 ft [914 mm] from solid surface (for service access).
2. Coil side clearance with accessory hail guard
installed is 3 ft [914 mm] to outside edge of hail guard top panel.
3. Coil side clearance for multiple chiller installation is
6 ft [1981 mm].
4. Flow switch is factory installed in leaving fluid piping.
Strainer is factory installed for entering fluid piping.

10
Fig. 8 —Dimensions —30RA042-050 AquaSnap™Chiller
NOTES: 1. Unit must have clearances for airflow as follows:
Top — Do not restrict in any way. Coil Side — 31/2ft [1067 mm] from solid surface side.
Ends — 3 ft [914 mm] from solid surface (for service access).
2. Coil side clearance with accessory hail guard
installed is 3 ft [914 mm] to outside edge of hail guard top panel.
3. Coil side clearance for multiple chiller installation is
6 ft [1981 mm].
4. Flow switch is factory installed in leaving fluid piping.
Strainer is factory installed for entering fluid piping.

11
Fig. 9 —Dimensions —30RA055 AquaSnap™Chiller
NOTES: 1. Unit must have clearances for airflow as follows:
Top — Do not restrict in any way. Coil Side — 31/2ft [1067 mm] from solid surface side.
Ends — 3 ft [914 mm] from solid surface (for service access).
2. Coil side clearance with accessory hail guard
installed is 3 ft [914 mm] to outside edge of hail guard top panel.
3. Coil side clearance for multiple chiller installation is
6 ft [1981 mm].
4. Flow switch is factory installed in leaving fluid piping.
Strainer is factory installed for entering fluid piping.

12
Step 4 —Cooler Fluid and Drain Piping Con-
nections (Units with Factory-Installed Hy-
dronic Packages)
WATER SYSTEM OVERVIEW — The 30RA chillers with
factory-installed hydronic packages are designed for use with
closed systems, meaning that there is no more than one water-
air interface in the water loop. Cooling tower loops, for
example, have two water-air interfaces (sump and nozzles) and
would thus be classified as open, whereas a correctly designed
chilled water loop with the only water-air interface being in the
expansion tank is closed. Since closed and open water systems
behave very differently, these instructions assume that the
chilled water loop is closed. A system installed incorrectly such
that air is not handled properly — pipe leaks, vent leaks, air in
pipes, etc. — may behave as an open system and thus have
unsatisfactory operation. Pump seal wear can also cause leaks
that cause poor system operation.
Proper closed system design and installation procedures
should be followed closely. The system must be constructed
with pressure tight components and thoroughly tested for
installation leaks. Factory-supplied hydronic systems are avail-
able with single or dual (for back-up) pumps. The factory-
installed system includes all of the components within the
dashed lines in Fig. 10.
Installation of water systems should follow sound engineer-
ing practice as well as applicable local and industry standards.
Improperly designed or installed systems may cause unsatis-
factory operation and/or system failure. Consult a water treat-
ment specialist or appropriate literature for information regard-
ing filtration, water treatment, and control devices. Figure 10
shows a typical installation with components that might be in-
stalled with the hydronic package of the 30RA unit. Figure 11
illustrates a typical dual pump package for the 010-030 size
models.
NOTE: It is recommended that isolation (shut-off) valves be
placed exterior to the unit to allow removal and service of
the entire pump assembly, if necessary. Also, if the unit is
isolated with valves, a properly sized pressure relief valve
should be installed in the piping between the unit and the
valves, following all applicable state and local codes.
8
9
10
12 11
14
12 11
13
2
1
3
4
5
6
7
6
FS
LEGEND
1—Strainer/Blow-Down Valve
2—Expansion Tank
3—Pump
4—Electric Heater
5—Air Vent Connection Port
6—Pressure Gages/Petcocks
7—Heat Exchanger
8—Flow Switch
9—Balancing Valve Balance
Valve/Drain Plug
10 —Pressure Relief
11 —Isolation Valves
12 —Flex Connections
13 —Pressure Reducing/Fill Valve
14 —Air Separator and Vent
Fig. 10 —Typical Piping Diagram on 30RA Units With Hydronic Package
5
6
7
1
24
3
LEGEND
1—Strainer
2—Blow-Down Valve
3—Discharge Check Valve
(Dual Pumps Only)
4—Balancing Valve with Drain Plug
5—Flow Switch
6—Field Connections
7—Heater
Fig. 11 —Typical Dual Pump Package

13
AIR SEPARATION — For proper system operation, it is
essential that water loops be installed with proper means to
manage air in the system. Free air in the system can cause
noise, reduce terminal output, stop flow, or even cause pump
failure due to pump cavitation. For closed systems, equipment
should be provided to eliminate all air from the system.
The amount of air that water can hold in solution depends
on the pressure and temperature of the water/air mixture. Air is
less soluble at higher temperatures and at lower pressures.
Therefore, separation can best be done at the point of highest
water temperature and lowest pressure. Typically, this point
would be on the suction side of the pump as the water is return-
ing from the system or terminals. Generally speaking, this is
the best place to install an air separator, if possible.
1. Install automatic air vents at all high points in the system.
(If the 30RA unit is located at the high point of the
system, a vent can be installed on the piping entering the
heat exchanger on the ¼-in. NPT female port.)
2. Install an air separator in the water loop, at the place
where the water is at higher temperatures and lower
pressures — usually in the chilled water return piping.
On a primary-secondary system, the highest temperature
water is normally in the secondary loop, close to the
decoupler. Preference should be given to that point on the
system (see Fig. 12). In-line or centrifugal air separators
are readily available in the field.
It may not be possible to install air separators at the place of
lowest pressure and highest temperature. In such cases, prefer-
ence should be given to the points of highest temperature. It is
important that pipe be sized correctly so that free air can be
moved to the point of separation. Generally, a water velocity of
at least 2 feet per second will keep free air entrained and
prevent it from forming air pockets.
Automatic vents should be installed at all physically elevat-
ed points in the system so that air can be eliminated during
system operation. Provision should also be made for manual
venting during the water loop fill. It is important that the
automatic vents be located in accessible locations for mainte-
nance purposes, and that they be located where they can be
prevented from freezing.
WATER CONNECTIONS — The water connections are cop-
per or brass FPT. Any connecting pipe to the 30RA pump
package must be of a material that will not cause any galvanic
corrosion. For this reason, galvanized steel pipe or other dis-
similar metals must not be used unless joined by a dielectric
coupling. The connection sizes for the 30RA unit sizes 010-
030 are 2-in. FPT. Sizes 032-055 use 21/2-in. FPT.
Follow the steps below when connecting pipe to the unit
water connections:
1. Remove side panel(s) of unit to access the piping area.
2. Remove access covers of pump box.
3. Use a backup wrench on internal water connections to
prevent twisting of internal piping, using a good sealant
that will also allow for disconnecting the pipes if needed.
4. After connection is made, replace access covers of pump
box and side panels of unit.
WATER SYSTEM CLEANING — Proper water system
cleaning is of vital importance. Excessive particulates in the
water system can cause excessive pump seal wear, reduce or
stop flow, and cause damage of other components. Water
quality should be maintained within the limits indicated in
Table 2.
1. Install a temporary bypass around the chiller to avoid cir-
culating dirty water and particulates into the pump pack-
age and chiller during the flush. Use a temporary circulat-
ing pump during the cleaning process. Also, be sure that
there is capability to fully drain the system after cleaning.
(See Fig 13.)
2. Be sure to use a cleaning agent that is compatible with all
system materials. Be especially careful if the system
contains any galvanized or aluminum components. Both
detergent-dispersant and alkaline-dispersant cleaning
agents are available.
3. It is a good idea to fill the system through a water meter.
This provides a reference point for the future for loop
volume readings, but it also establishes the correct
quantity of cleaner needed in order to get the required
concentration.
4. Use a feeder/transfer pump to mix the solution and fill the
system. Circulate the cleaning system for the length of
time recommended by the cleaning agent manufacturer.
a. After cleaning, drain the cleaning fluid and flush the
system with fresh water.
b. A slight amount of cleaning residue in the system can
help keep the desired, slightly alkaline, water pH of 8
to 9. Avoid a pH greater than 10, since this will
adversely affect pump seal components.
c. A side stream filter is recommended (see Fig. 14)
during the cleaning process. Filter side flow rate
should be enough to filter the entire water volume
every 3 to 4 hours. Change filters as often as neces-
sary during the cleaning process.
d. Remove temporary bypass when cleaning is
complete.
A strainer with a blow-down valve is standard on all 30RA
units, both with and without hydronic packages. The blow-
down valve allows removal of particulates caught in the strain-
er without complete removal of the screen. A female NPT
connection is provided on the valve, allowing hose connection
for drainage outside the unit.
The Sterlco ComfortLink™ controlsprovided have a built-
in feature to remind building owners or operators to clean the
strainer by discharging the blow-down valve at a pre-set time
interval. Properly installed and cleaned systems will rarely
need the strainer cleaned after the initial fill. This time interval
is user-configurable.
Table 2 —Water Quality Characteristics
and Limitations
*Sulfides in the water quickly oxidize when exposed to air, requiring that
no agitation occur as the sample is taken. Unless tested immediately
at the site, the sample will require stabilization with a few drops of one
Molar zinc acetate solution, allowing accurate sulfide determination up
to 24 hours after sampling. A low pH and high alkalinity cause system
problems, even when both values are within the ranges shown. The
term pH refers to the acidity, basicity, or neutrality of the water supply.
Below 7.0, the water is considered to be acidic. Above 7.0, water is
considered to be basic. Neutral water contains a pH of 7.0.
†Dissolved carbon dioxide can either be calculated from the pH and
total alkalinity values, shown below, or measured on the site using a
test kit. Dissolved Carbon Dioxide, PPM = TA x 2[(6.3-pH)/0.3] where TA
= Total Alkalinity, PPM as CaCO3.
WATER CHARACTERISTIC QUALITY LIMITATION
Alkalinity (HCO3-)70 –300 ppm
Sulfate (SO42-)Less than 70 ppm
HCO3-/SO42- Greater than 1.0
Electrical Conductivity 10 –500 µS/cm
pH 7.5 –9.0
Ammonium (NH3)Less than 2 ppm
Chorides (Cl-)Less than 300 ppm
Free chlorine (Cl2)Less than 1 ppm
Hydrogen Sulfide (H2S)* Less than 0.05 ppm
Free (aggressive) Carbon
Dioxide (CO2)†
Less than 5 ppm
Total Hardness (dH) 4.0 –8.5
Nitrate (NO3)Less than 100 ppm
Iron (Fe) Less than 0.2 ppm
Aluminum (Al) Less than 0.2 ppm
Manganese (Mn) Less than 0.1 ppm

14
SYSTEM PRESSURIZATION — A proper initial cold fill
pressure must be established before the filling of the unit. The
initial cold fill pressure is the pressure applied at the filling
point to fill a system to its highest point, plus a minimum pres-
sure at the top of the system (4 psi minimum) to operate air
vents and positively pressurize the system.
The compression tank (sometimes called expansion tank) is
very important to system pressurization. The compression tank
actually serves several purposes:
1. Provide Net Positive Suction Head Required (NPSHR)
for the pump to operate satisfactorily.
2. Set system pressure.
3. Accommodate expansion/contraction of water due to
temperature changes.
4. Acts as a pressure reference for the pump.
The compression tank pressure must be set BEFORE the
system is filled. The tanks are pre-charged at the factory to
40 psig. If the 30RA unit with expansion tank is the high point
in the system, tank pre-charge pressure of 40 psig will be
adequate. If the 30RA unit with expansion tank is NOT at the
high point in the system, then the minimum pre-charge
pressure for the water system must be determined using Table 3
and the method below:
Tank Pressure = 4 + (height from tank to top of
system in feet/“X”)
For example, assuming a system containing a 20% concen-
tration of ethylene glycol and 50 feet in height from the top of
the system to the expansion tank, the minimum tank pre-
charge pressure would be:
Tank Pressure = 4 + (50 ÷2.38) = 25.0 psig
Table 3 —“X”Factor for Setting Tank Pressure
NOTE: If expansion tanks are placed elsewhere in the system this
method cannot be used since extra pressure drop between the tank
and the pump must be accounted for.
NOTE: If the system requires a pre-charge greater than
40 psig, increase pressure as described below.
Expansion Tank Pre-Charge — To pre-charge the expansion
tank, do the following steps:
1. Check the tank air pressure at the pre-charge connection
with an accurate pressure gage. Adjust as needed.
2. If additional pressure is required, charge the tank with oil-
free compressed air or nitrogen gas. Occasionally check
the pressure as when filling a tire.
3. Check the air valve for leakage. If it leaks, relieve the
pressure and replace the core with a Schraeder type tire
core. DO NOT depend on the valve cap to seal the leak.
Once the system is pressurized, the pressure at the connec-
tion point of the expansion tank to water piping will not change
unless the water loop volume changes (either due to addition/
subtraction of water or temperature expansion/contraction).
The pressure at this point remains the same regardless of
whether or not the pump is running.
% GLYCOL ETHYLENE
GLYCOL
PROPYLENE
GLYCOL
0 (pure water) 2.31 2.31
10 2.36 2.33
20 2.38 2.36
30 2.40 2.38
40 2.43 2.38
50 2.47 2.40
Distribution Pump
Expansion
Tank(s)
Air Separator
with Vent
Decoupler
Chiller 1 Chiller 2
Zone 1 Zone 2 Zone 3
x
x
DILUTED
CLEANING
AGENT
SYSTEM
POT FEEDER AND
TRANSFER PUMP
30RA UNIT
TO DRAIN
TEMPORARY
PUMP
TEMPORARY
BYPASS
x
x
DILUTED
CLEANING
AGENT
SYSTEM
SIDE
STREAM
FILTER
POT FEEDER AND
TRANSFER PUMP
30RA UNIT
TO DRAIN
TEMPORARY
PUMP
TEMPORARY
BYPASS
NOTE: Expansion tanks in the 30RA hydronic kits must be disconnected for chillers placed parallel in the primary water loop.
Fig. 12 —Typical Air Separator and Expansion Tank Location on Primary-Secondary Systems
Fig. 13 —Typical Set Up for Cleaning Process Fig. 14 —Cleaning Using a Side Stream Filter

15
Since the expansion tank acts as a reference point for the
pump, there cannot be two reference points (two expansion
tanks) in a system (unless manifolded together). If system
volume or other design considerations warrant the placement
of another expansion tank somewhere in the system, the expan-
sion tank in the 30RA hydronic package MUST be disconnect-
ed from its hose and the end of the hose securely plugged.
This is also true for applications where two or more 30RA
chillers are placed in parallel. There should not be more than
one expansion tank in the system (unless manifolded together
as seen in Fig. 12). The expansion tanks must be disconnected
from the 30RA hydronic package. It is permissible to install the
expansion tank(s) in a portion of the return water line that is
common to all pumps, providing that the tank is properly sized
for combined system volume.
If the application involves two or more chillers in a primary-
secondary system, a common place for mounting the
expansion tank is in the chilled water return line, just before the
decoupler. See Fig. 12 for placement of expansion tank in
primary-secondary systems.
The expansion tank included in the 30RA hydronic package
is a diaphragm tank, meaning that a flexible diaphragm physi-
cally separates the water/air interface. With this type of expan-
sion tank, it is undesirable to have any air in the water loop. See
the section on air separation on page 13 for instructions on
providing air separation equipment.
FILLING THE SYSTEM — The initial fill of the chilled
water system must accomplish three purposes:
1. The entire piping system must be filled with water.
2. The pressure at the top of the system must be high enough
to vent air from the system (usually 4 psig is adequate for
most vents).
3. The pressure at all points in the system must be high
enough to prevent flashing in the piping or cavitation in
the pump.
The pressure created by an operating pump affects system
pressure at all points except one — the connection of the
compression tank to the system. This is the only location in the
system where pump operation will not give erroneous pressure
indications during the fill. Therefore, the best location to install
the fill connection is close to the expansion tank. An air vent
should be installed close by to help eliminate air that enters
during the fill procedure.
Ensure the following when filling the system:
1. Remove temporary bypass piping and cleaning/flushing
equipment.
2. Check to make sure all drain plugs are installed.
3. Open the blow-down valve to flush the strainer.
Normally, a closed system needs to be filled only once. The
actual filling process is generally a fairly simple procedure. All
air should be purged or vented from the system. Thorough
venting at the high points and circulation at room temperature
for several hours is recommended.
NOTE: Local codes concerning backflow devices and other
protection of the city water system should be consulted and
followed to prevent contamination of the public water
supply. This is especially important when anti-freeze is used
in the system.
Set Water Flow Rate — Once the system is cleaned, pressur-
ized, and filled, the flow rate through the chiller needs to be
established. On units with the hydronic package, this can best
be done using the balancing valve.
In order to adjust the balancing valve, put a differential
pressure gage across the pressure taps on the valve. Make sure
that all system isolation and control valves are open. Use
Tables 4 and 5 or a Bell & Gossett balancing valve calculator to
determine GPM. To read Tables 4 and 5:
1. Measure the pressure drop across the balancing valve. If
the pressure reading is in psi, multiply psi x 2.31 to con-
vert to feet of water before using Tables 4 and 5.
2. Go to the row in the chart corresponding to the setting on
the valve, interpolating if necessary.
3. The GPM corresponding to the pressure drop measured is
the flow through the balancing valve.
NOTE: Sterling recommends a differential pressure gage when
measuring pressures across the pumps or balancing valves.
This provides for greater accuracy and reduces error build-up
that often occurs when subtracting pressures made by different
gages.
On primary/secondary systems, it is advisable to set the
30RA balancing valve to maintain design flow plus 10%
through the chiller.
A rough estimate of water flow can also be obtained from
the pressure gages across the 30RA heat exchanger.
Figures 15A-16B show the relationship between GPM and
heat exchanger pressure drop. It should be noted that these
curves are for “clean” heat exchangers; they do not apply to
heat exchangers with fouling. To read the chart, subtract the
readings of the two pressure gages on the hydronic kit. This
number is the pressure drop across the heat exchanger. Adjust
the factory-installed balancing valve or external balancing
valve (units without hydronic package) until the correct pres-
sure drop is obtained for the required GPM.
Table 4 —Head (Ft Water) as Read on Balancing Valve for 30RA010-030
Table 5 —Head (Ft Water) as Read on Balancing Valve for 30RA032-055
SETTING GPM
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100
00 0 0.1 0.3 0.6 0.9 1.3 1.8 2.3 2.9 3.6 4.4 5.2 6.1 7.1 8.1 9.2 10.4 11.7 13 14.4
10 0 0.1 0.3 0.7 1.2 1.8 2.7 3.6 4.7 6 7.4 8.9 10.6 12.4 14.4 16.6 18.9
20 0 0.2 0.7 1.6 2.9 4.6 6.6 8.9 11.7 14.8 18.2
30 0 0.5 2 4.6 8.1 12.7 18.3
40 01.6 6.214
50 0 4.1 16.2
SETTING GPM
40 50 60 70 80 85 90 95 100 105 110 115 120 125 130 135 140
00.9 1.4 2 2.7 3.5 4 4.4 4.9 5.5 6 6.6 7.2 7.9 8.5 9.2 10 10.7
10 1.6 2.5 3.6 5 6.5 7.3 8.2 9.1 10.1 11.2 12.3 13.4 14.6 15.8 17.1 18.5 19.9
20 3.4 5.3 7.6 10.4 13.6 15.3 17.2 19.1 21.2 23.4 25.7 28.1 30.5 33.1 35.8 38.7 41.6
30 8.5 13.3 19.2 26.2 34.2 38.6 43.2 48.2 53.4 58.9 64.6 70.6 76.9 83.4 90.2 97.3 104.7
40 23.7 37 53.2 72.4 94.6 106.8 119.8 133.4 147.8 163 178.9 195.5 212.9 231 249.8 269.4 289.8
50 54.6 85.3 122.8 167.2 218.3 246.5 276.3 307.9 341.1 376.1 412.8 451.1 491.2 533 576.5 621.7 668.6

16
Minimum Loop Volume — The preferred minimum loop
volume is equal to twice the water flow rate per ton. (For
example, the preferred water volume for 2.4 GPM/ton would
be 2 x 2.4 = 4.8 gallons in the loop per ton of cooling.) In order
to obtain leaving water temperature stability for comfort cool-
ing applications, a minimum of 3 gallons per ton is required on
all other unit sizes. For process cooling applications, where
high stability is critical, the loop volume should be increased to
6 to 10 gallons per ton of cooling.
In order to achieve this volume, it may be necessary to add a
water storage tank to the water loop. (The compression/
expansion tank on the 30RA hydronic package is NOT a
storage tank. If a storage tank is added to the system, it should
be properly vented so that the tank can be completely filled and
all air eliminated. Failure to do so could cause lack of pump
stability and poor system operation.)
NOTE: On systems with a high volume, check the section on
maximum loop volume. A different expansion tank may be
required on systems with very high loop volumes.
Any storage tank that is placed in the water loop should
have internal baffles to allow thorough mixing of the fluid. See
Fig 17.
A properly baffled storage tank is available from the factory
as an accessory. These tanks are designed to physically fit
beneath the corresponding 30RA unit, taking up the same
footprint.
Available volumes are as follows:
• 30RA010-018 110 gallons
• 30RA022-030 152 gallons
• 30RA032-055 305 gallons
Maximum Loop Volume — Since the minimum size of the
expansion tank is dependent upon loop volume, units with the
integrated hydronic kit must not exceed the maximum loop
volume limits below (see Table 6). The limits are dependent on
the maximum and minimum temperatures of the water, the
maximum and minimum pressures seen by the expansion tank,
and the heat transfer fluid. Expansion tank and maximum loop
volume data is as follows.
30RA010-030 30RA032-055
Volume gal 4.4 10.3
Acceptance Volume gal 3.2 10.3
12346
5
30
20
10
5
2
1
1234
5
6
Flow Rate (L/S)
Heat Exchanger Pressure Drop (KPa)
567 8910
7
8
9
10
11
25
20
10
5
Flow Rate (L/S)
Heat Exchanger Pressure Drop (KPa)
LEGEND
Fig. 15A —Heat Exchanger Pressure Drop —
30RA010-030 (English)
1—30RA010 4—30RA022
2—30RA015 5—30RA025
3—30RA018 6—30RA030
LEGEND
Fig. 15B —Heat Exchanger Pressure Drop —
30RA010-030 (SI)
1—30RA010 4—30RA022
2—30RA015 5—30RA025
3—30RA018 6—30RA030
LEGEND
Fig. 16A —Heat Exchanger Pressure Drop —
30RA032-055 (English)
7—30RA032, 30RA035 10 —30RA050
8—30RA040 11 —30RA055
9—30RA042, 30RA045
LEGEND
Fig. 16B —Heat Exchanger Pressure Drop —
30RA032-055 (SI)
7—30RA032, 30RA035 10 —30RA050
8—30RA040 11 —30RA055
9—30RA042, 30RA045

17
Table 6 —Maximum Loop Volume Limits
NOTE: Max loop volume is based on typical system of 12 psi and
30 psi of min/max pressures, and 100 F mean temperature. If the
volume in the system is greater than the limits listed, then extra
expansion tank volume must be added to the system.
Pump Modification/Trimming — Since the pumps are
constant speed, the only way to obtain greater flow with a
given pump/impeller is to decrease system head. This will
allow the pump to “ride” its curve to the right, resulting in
increased flow. If greater flow is necessary, look at opening the
balance valve. Also, verify that the strainer is clean, and that no
unnecessary system resistance is present, such as partially
closed isolation valves.
Increasing system resistance by closing the balancing valve
will force the pump to “ride” its curve to the left, resulting in
less flow. Although this does reduce power consumption
slightly, it may not be the desirable method of reducing the
flow, especially if a rather large reduction is needed.
The other method for reducing flow on a constant speed
pump is impeller trimming. The impellers in the pumps provid-
ed in the 30RA hydronic kit are easily removable for this pur-
pose. Refer to the ITT literature packet supplied with the
hydronic package information on Seal Replacement in the
Service Section, and follow its instructions for impeller remov-
al. Trimming should only be done by a qualified machine shop
thathas experience inthisoperation. Contact your localSterling
representative for a recommended machine shop. After trim-
ming, the impeller MUST be balanced. Failure to balance
trimmed impellers can result in excessive vibration, noise, and
premature bearing failure.
Impeller trimming has the added benefit of maximum BHP
savings. It is very possible for power savings to pay for the
trimming cost very quickly.
Freeze Protection — The 30RA units are provided with a
water strainer and a flow switch to protect against freezing situ-
ations that occur from no water flow. While the flow switch
(paddle-type) is helpful in preventing freezing during no-flow
situations, it does not protect the chiller in case of power fail-
ure, or in other cases where water temperature falls below the
freezing mark. Appropriate concentrations of inhibited ethyl-
ene glycol or other suitable inhibited antifreeze solution should
be considered for chiller protection where ambient tempera-
tures are expected to fall below 32 F. Consult local water treat-
ment specialist on characteristics of the system water and add a
recommended inhibitor to the chilled water.
1. If the pump will be subjected to freezing temperatures,
steps must be taken to prevent freeze damage. If the
pump will not be used during this time, it is recommend-
ed to drain the pump and hydronic package and these
components back-flushed with inhibited glycol. Other-
wise, a glycol-water solution should be considered as the
heat transfer fluid. Drains are located on the balancing
valves for units with hydronic kits. Units without hydron-
ic kits have a drain mounted on the piping leaving the
heat exchanger. Drain knockouts are located on the sheet
metal base of all units.
NOTE: Do not use automobile anti-freeze, or any other fluid
that is not approved for heat exchanger duty. Only use appro-
priately inhibited glycols, concentrated to provide adequate
protection for the temperature considered.
2. Use an electric tape heater for the internal piping (exclud-
ing those within the pump box) if unit will be exposed to
freezing temperature.
3. Ensure that power is available to the chiller at all times,
even during the off-season, so that the pump and cooler
heaters have power. Also make sure that the piping tape
heaters also have power.
4. On units with pump packages, a heater is supplied in the
pump box that will protect this section from freezing in
outdoor-air temperatures down to –20 F, except in case of
a power failure. Sterling warrantydoesnot cover damage
due to freezing.
5. Cooler heaters that will protect down to –20 F can be
installed as a factory option. Again, it should be noted
that these heaters will not protect the cooler from freezing
in the event of a power failure.
Preparation for Winter Shutdown — Do not shut off power
disconnect during off-season shutdown. At the end of the cool-
ing season:
1. Drain water from system.
2. Replace drain plug(s) and add sufficient inhibited ethyl-
ene glycol (or other suitable inhibited antifreeze) to
cooler, pump and piping to prevent freezing of residual
water.
3. At the beginning of the next cooling season, refill cooler
and add recommended inhibitor.
MAX LOOP VOLUME IN GALLONS (LITERS)
% Ethylene Glycol 30RA010-030 30RA032-055
0 (Pure Water) 310 (1173) 725 (2744)
10 180 (681) 425 (1609)
20 175 (662) 410 (1552)
30 155 (587) 370 (1400)
40 150 (568) 350 (1325)
50 145 (549) 340 (1287)
% Propylene Glycol 30RA010-030 30RA032-055
10 175 (662) 410 (1552)
20 150 (568) 350 (1325)
30 128 (484) 300 (1136)
40 118 (447) 275 (1041)
BAD
BAD
GOOD
GOOD
Fig. 17 —Tank Baffling

18
Step 5 —Make Electrical Connections
POWER SUPPLY — Electrical characteristics of available
power supply must agree with unit nameplate rating. Field wir-
ing size and supply voltage must be within limits shown in
Tables 7 and 8. See Tables 9-11 for component electrical data.
POWER WIRING — All power wiring must comply with
applicable local and national codes. Install field-supplied
branch circuit fused disconnect per NEC (National Electric
Code, U.S.A.) of a type can be locked OFF or ON. Disconnect
must be within sight from and readily accessible from unit in
compliance with NEC Article 440-14.
General Wiring Notes
1. The control circuit does NOT require a separate power
source. Control circuit power is obtained by a step-down
transformer from the main three-phase power supply. Up
to two terminal blocks are provided for field-wired
control devices.
2. Cooler and pump heaters (if factory installed) are wired
in the control circuit so they are operable as long as the
main power supply to the unit is ON. A factory-installed
and set overload device protects them.
NOTE: The field-supplied disconnect should never be off
except when unit is being serviced or is to be down for a pro-
longed period, in which case cooler should be drained.
3. Power entry is at one end only.
4. Maximum field wire sizes allowed by lugs on terminal
block/non-fused disconnect are listed in Table 7.
5. Terminals for field power supply are suitable for
copper conductors. Insulation must be rated 167 F (75 C)
minimum.
Table 7 —Recommended Field Wiring Sizes
FIELD CONNECTIONS
Main Power — Bring wires from the fused disconnect switch
through hole in bottom of left front corner post (010-030 sizes)
or through hole in bottom center panel (032-055 sizes) of unit
to bottom of control box and connect to terminals on terminal
block or non-fused disconnect. A field neutral is required for
380/415-3-50 units only. To comply with NEC Article 440-14,
the disconnect must be located within sight from and readily
accessible from unit. Refer to Fig. 18 and 19.
Control Power — Control power is obtained from the main
power supply and does NOT require a separate source. A
toggle switch (marked Emergency On-Off on the unit label
diagram and by the switch) allows the control circuit to be
manually disconnected when necessary. Cooler and pump
heaters (if installed) are in an operable state when this switch is
in the Off position.
Step 6 —Install Accessories
ELECTRICAL — A number of electrical accessories are
available to provide the following optional features (for details,
refer to the Controls, Start-Up, Operation, Service, and
Troubleshooting book):
Energy Management Module (Used for any of the following
types of temperature reset, demand limit and ice features):
• 4 to 20 mA leaving fluid temperature reset (requires
field-supplied 4 to 20 mA generator)
• 4 to 20 mA cooling set point reset (requires field-
supplied 4 to 20 mA generator)
• Discrete inputs for 2-step demand limit (requires field-
supplied dry contacts)
• 4 to 20 mA demand limit (requires field-supplied 4 to
20 mA generator)
• Discrete input for Ice Done switch (requires field-
supplied dry contacts)
Navigator Display — Provides hand-held, mobile capability
using easy to read 4-line display. Keypad function is the same
as the Scrolling Marquee module. Features magnet for ‘hands
free’ service of components.
Low Ambient Operation — If outdoor ambient operating
temperatures below 45 F (7.2 C) for 30RA010-018 units and
32 F (0.0° C) for 30RA022-055 units are expected, refer to sep-
arate installation instructions for low-ambient operation using
accessory Motormaster® V control.
Minimum Load Accessory — If minimum load accessory is
required, refer tounitPricePages or contactyour localSterling
representative for more details. For installation details, refer to
separate installation instructions supplied with the accessory
package.
Miscellaneous Accessories — For applications requiring spe-
cial accessories, the following packages are available: Coil hail
guard, external vibration, enhanced display, temperature reset,
condenser coil grilles, storage tank and remote cooler. For
installation details, refer to separate installation instructions
supplied with these accessory packages.
ELECTRIC SHOCK HAZARD.
To avoid the possibility of electrical shock,
open and tag all disconnects before installing
this equipment.
IMPORTANT: Operating unit on improper supply voltage
or with excessive phase imbalance constitutes abuse and
may affect Sterling warranty.
CONNECTION
TYPE
MAX WIRE
SIZE UNIT SIZE AND VOLTAGE
TERMINAL
BLOCK
#2/0 AWG 30RA010-030 (all voltages)
350 kcmil 30RA035-055 (all voltages)
60/100 AMP
NON-FUSED
DISCONNECT
#1 AWG
30RA010-055 (575-3-60)
30RA010-030
(380-3-60, 460-3-60)
30RA010-025 (380/415-3-50)
30RA010-018 (230-3-50, 230-3-60,
208/230-3-60)
250 AMP
NON-FUSED
DISCONNECT
350 kcmil
30RA035-055 (380-3-60, 460-3-60)
30RA032-045 (380/415-3-50)
30RA022-045 (230-3-50)
30RA022-055 (230-3-60, 208/230-
3-60)
AWG —American Wire Gage
IMPORTANT: To ensure power to the heaters, make sure
auxiliary power to unit is always on (except for servicing or
prolonged shutdown).
Proper rotation of condenser fan(s) MUST be verified
before pumps or compressors are started. Consult the Con-
trols, Start-Up and Operation manual provided with this
chiller for correct procedure. Improper pump rotation can
cause permanent damage to pump impeller and housing. If
pump(s) have been removed for trimming, verify that wir-
ing is reconnected in the original manner.

19
Table 8 —Electrical Data
LEGEND
NOTES:
1. Units are suitable for use on electrical systems where voltage supplied to the unit
terminals is not below or above the listed minimum and maximum limits. Maximum
allowable phase imbalance is: voltage, 2%; amps 10%.
2. All units have single point primary power connection. The unit control circuit power
(24 v, single-phase) is supplied from the main power and does not require a separate
power source.
3. Hydronic package and cooler heaters are wired into the control circuit so they are
always operable as long as the power supply disconnect is on, even if any safety
device is open, and the unit ON/OFF switch is in the OFF position.
4. Power draw control circuits include cooler heaters (where used).
UNIT
30RA
UNIT VOLTAGE POWER
SUPPLY
QTY.
REQD.
NO HYDRONIC PACKAGE
1.5/1.0 HP PUMP
Pump Options
‘A’or ‘F’
2.0/1.5 HP
(STD) PUMP
Pump Options
‘B’or ‘G’
2.0/1.5 HP
(ALT) PUMP
Pump Options
‘C’or ‘H’
3.0/2.0 HP PUMP
Pump Options
‘D’or ‘J’
5.0/3.0 HP PUMP
Pump Options
‘E’or ‘K’
V-H z
(3 Ph)
Supplied MCA MOCP ICF Rec
Fuse
Size
MCA MOCP Rec
Fuse
Size
MCA MOCP Rec
Fuse
Size
MCA MOCP Rec
Fuse
Size
MCA MOCP Rec
Fuse
Size
MCA MOCP Rec
Fuse
Size
Min Max XL XL XL XL XL XL XL XL XL XL XL XL XL
010
230-60 207 253 1 46.2 70 272.6 60 50.2 80 60 51.4 80 60 51.4 80 60 53.6 80 70 ———
208/230-60 187 253 1 51.3 80 273.4 60 55.7 90 70 57.0 90 70 57.0 90 70 59.5 90 70 ———
460-60 414 506 1 23.8 35 123.8 30 25.8 40 30 26.4 40 35 26.4 40 35 27.5 40 35 ———
575-60 518 633 1 19.2 30 83.0 25 20.8 30 25 21.2 30 25 21.2 30 25 22.1 35 30 ———
380-60 342 418 1 29.9 50 159.6 35 32.3 50 40 33.0 50 40 33.0 50 40 34.3 50 40 ———
380/415-50 342 440 1 28.5 45 138.8 35 30.2 50 40 31.0 50 40 31.0 50 40 31.6 50 40 ———
230-50 207 253 1 48.9 80 231.3 60 51.7 80 70 52.9 80 70 52.9 80 70 54.0 80 70 ———
015
230-60 207 253 1 62.4 100 387.6 80 66.4 110 80 67.6 110 80 67.6 110 80 69.8 110 90 ———
208/230-60 187 253 1 69.3 110 388.4 90 73.7 110 90 75.0 110 90 75.0 110 90 77.5 125 90 ———
460-60 414 506 1 33.6 50 178.8 40 35.6 50 45 36.2 50 45 36.2 50 45 37.3 60 45 ———
575-60 518 633 1 26.7 45 143.0 35 28.3 45 35 28.7 45 35 28.7 45 35 29.6 45 35 ———
380-60 342 418 1 42.2 70 239.6 50 44.6 70 60 45.4 70 50 45.4 70 50 46.7 70 60 ———
380/415-50 342 440 1 36.0 50 148.1 40 37.6 50 45 38.4 50 45 38.4 50 45 39.1 50 45 ———
230-50 207 253 1 64.5 90 242.2 80 67.3 90 80 68.5 90 80 68.5 90 80 69.7 90 80 ———
018
230-60 207 253 1 67.3 90 271.2 80 71.3 90 80 72.5 90 80 72.5 90 80 74.7 100 90 ———
208/230-60 187 253 1 74.8 100 274.9 90 79.2 100 90 80.5 110 90 80.5 110 90 83.0 110 100 ———
460-60 414 506 1 35.5 45 147.9 40 37.5 50 45 38.1 50 45 38.1 50 45 39.2 50 45 ———
575-60 518 633 1 28.5 35 99.3 35 30.1 40 35 30.5 40 35 30.5 40 35 31.4 40 35 ———
380-60 342 418 1 44.0 60 182.1 50 46.4 60 60 47.1 60 60 47.1 60 60 48.5 60 60 ———
380/415-50 342 440 1 38.9 50 139.4 45 40.6 50 45 41.3 50 50 41.3 50 50 42.0 50 50 ———
230-50 207 253 1 69.5 90 239.4 80 72.3 100 80 73.5 100 90 73.5 100 90 74.6 100 90 ———
022
230-60 207 253 1 84.9 110 311.3 100 88.9 125 100 90.1 125 100 90.1 125 100 92.3 125 110 ———
208/230-60 187 253 1 94.3 125 316.4 110 98.7 125 110 100.1 125 125 100.1 125 125 102.5 125 125 ———
460-60 414 506 1 44.7 60 154.4 50 46.7 60 60 47.3 60 60 47.3 60 60 48.4 60 60 ———
575-60 518 633 1 36.8 50 136.0 45 38.4 50 45 38.9 50 45 38.9 50 45 39.8 50 45 ———
380-60 342 418 1 57.7 80 194.7 70 60.1 80 70 60.9 80 70 60.9 80 70 62.2 80 70 ———
380/415-50 342 440 1 49.2 60 159.4 60 50.9 70 60 51.6 70 60 51.6 70 60 52.3 70 60 ———
230-50 207 253 1 84.4 110 266.8 100 87.2 110 100 88.4 110 100 88.4 110 100 89.5 110 100 ———
025
230-60 207 253 1 92.2 125 311.3 110 96.2 125 110 97.4 125 110 97.4 125 110 99.6 125 110 ———
208/230-60 187 253 1 102.4 125 316.4 125 106.8 125 125 108.2 125 125 108.2 125 125 110.6 150 125 ———
460-60 414 506 1 50.3 70 160.0 60 52.3 70 80 52.9 70 80 52.9 70 80 54.0 70 80 ———
575-60 518 633 1 41.2 50 140.4 50 42.8 50 50 43.3 50 50 43.3 50 50 44.2 60 50 ———
380-60 342 418 1 65.2 90 202.2 80 67.6 90 80 68.4 90 80 68.5 90 80 69.7 90 80 ———
380/415-50 342 440 1 59.1 80 203.8 70 60.8 80 70 61.5 80 70 61.5 80 70 62.2 80 70 ———
230-50 207 253 1 101.3 125 359.3 125 104.0 125 125 105.3 125 125 105.3 125 125 106.4 125 125 ———
030
230-60 207 253 1 108.2 150 433.4 125 112.2 150 125 113.4 150 125 113.4 150 125 115.6 150 150 ———
208/230-60 187 253 1 120.2 150 439.3 150 124.6 150 150 125.9 150 150 125.9 150 150 128.4 175 150 ———
460-60 414 506 1 58.4 80 203.6 70 60.4 80 70 61.0 80 70 61.0 80 70 62.1 80 70 ———
575-60 518 633 1 46.4 60 162.7 60 48.0 60 60 48.4 60 60 48.4 60 60 49.3 60 60 ———
380-60 342 418 1 73.5 100 270.9 90 76.0 100 90 76.7 100 90 76.7 100 90 78.0 100 90 ———
032 380/415-50 342 440 1 73.0 90 217.7 80 ———75.4 90 90 ———76.1 100 90 78.2 100 90
230-50 207 253 1 126.2 150 384.2 150 ———130.2 150 150 ———131.3 150 150 134.9 175 150
035
230-60 207 253 1 138.1 175 463.4 150 ———143.3 175 175 ———145.5 175 175 150.7 175 175
208/230-60 187 253 1 153.4 200 472.5 175 ———159.1 200 175 ———161.6 200 175 167.3 200 200
460-60 414 506 1 73.2 90 218.4 80 ———75.8 90 90 ———76.9 100 90 79.5 100 90
575-60 518 633 1 59.3 70 175.7 70 ———61.4 80 70 ———62.3 80 70 64.3 80 70
380-60 342 418 1 93.3 110 290.7 110 ———96.5 125 110 ———97.8 125 110 101.0 125 110
380/415-50 342 440 1 87.1 110 231.8 100 ———89.5 110 100 ———90.2 110 100 92.3 110 100
230-50 207 253 1 149.1 175 407.1 175 ———153.1 175 175 ———154.2 175 175 157.8 175 175
040
230-60 207 253 1 145.4 175 470.6 175 ———150.6 175 175 ———152.8 175 175 158.0 200 175
208/230-60 187 253 1 161.5 200 480.6 175 ———167.2 200 200 ———169.7 200 200 175.4 200 200
460-60 414 506 1 78.8 100 224.0 90 ———81.4 100 90 ———82.5 100 90 85.1 100 90
575-60 518 633 1 63.7 80 180.1 70 ———65.8 80 80 ———66.7 80 80 68.7 80 70
380-60 342 418 1 100.8 125 298.2 110 ———104.0 125 125 ———105.3 125 125 108.5 125 110
042 280/415-50 342 440 1 84.2 100 194.4 90 ———86.6 100 100 ———87.3 100 100 89.4 100 90
230-50 207 253 1 144.9 175 327.3 175 ———146.9 175 175 ———150.1 175 175 153.6 175 150
045
230-60 207 253 1 162.1 200 382.7 175 ———167.3 200 200 ———169.5 200 200 174.7 200 175
208/230-60 187 253 1 180.0 200 395.6 200 ———185.8 225 200 ———188.2 225 225 193.9 225 200
460-60 414 506 1 86.0 100 196.8 100 ———88.6 100 100 ———89.7 110 100 92.3 110 90
575-60 518 633 1 69.9 80 170.1 80 ———72.0 80 80 ———72.9 90 80 74.9 90 70
380-60 342 418 1 109.9 125 248.4 125 ———113.0 125 125 ———114.4 125 125 117.5 125 110
380/415-50 342 440 1 112.1 125 256.9 125 ———114.5 125 125 ———115.2 125 125 117.4 125 100
230-50 207 253 1 192.1 225 450.1 225 ———196.1 225 225 ———197.2 225 225 200.8 225 175
050
230-60 207 253 1 175.3 200 394.4 200 ———180.5 200 200 ———182.7 200 200 187.9 200 175
208/230-60 187 253 1 194.6 225 408.6 225 ———200.4 225 225 ———202.8 225 225 208.6 225 200
460-60 414 506 1 95.5 110 205.2 110 ———98.1 110 110 ———99.2 110 110 101.8 110 90
575-60 518 633 1 78.2 90 177.5 90 ———80.3 90 90 ———81.2 90 90 83.3 90 70
380-60 342 418 1 123.8 150 260.8 150 ———127.0 150 150 ———128.3 150 150 131.4 150 110
055
230-60 207 253 1 205.5 225 530.7 225 ———210.7 250 225 ———212.9 250 225 218.1 250 175
208/230-60 187 253 1 228.2 250 547.3 250 ———234.0 250 250 ———236.4 250 250 242.1 250 200
460-60 414 506 1 110.8 125 256.0 125 ———113.4 125 125 ———114.5 125 125 117.1 125 90
575-60 518 633 1 88.0 100 204.4 100 ———90.1 100 100 ———91.0 100 100 93.0 110 70
380-60 342 418 1 139.5 150 336.9 150 ———142.7 150 175 ———144.0 150 175 147.2 175 110
ICF —Instantaneous Current Flow MOCP —Maximum Overcurrent Protection
MCA —Minimum Circuit Amps XL —Across-the-Line Start

20
Table 9 —Fan Electrical Data
LEGEND
FLA —Full Load Amps
Table 10 —Pump Electrical Data
LEGEND
UNIT
30RA
UNIT VOLTAGE STANDARD CONDENSER FANS
V-Hz (3 P h) Circuit A
Quantity
FLA
(each)
Circuit B
Quantity
FLA
(each)
010
230-60 1 7.6 ——
208/230-60 1 8.4 ——
460-60 1 3.8 ——
575-60 1 3.0 ——
380-60 1 4.6 ——
380/415-50 1 3.8 ——
230-50 1 6.3 ——
015
230-60 1 7.6 ——
208/230-60 1 8.4 ——
460-60 1 3.8 ——
575-60 1 3.0 ——
380-60 1 4.6 ——
380/415-50 1 3.8 ——
230-50 1 6.3 ——
018
230-60 1 7.6 ——
208/230-60 1 8.4 ——
460-60 1 3.8 ——
575-60 1 3.0 ——
380-60 1 4.6 ——
380/415-50 1 3.8 ——
230-50 1 6.3 ——
022
230-60 2 4.8 ——
208/230-60 2 5.3 ——
460-60 2 2.4 ——
575-60 2 1.9 ——
380-60 2 2.9 ——
380/415-50 2 2.3 ——
230-50 2 3.8 ——
025
230-60 2 4.8 ——
208/230-60 2 5.3 ——
460-60 2 2.4 ——
575-60 2 1.9 ——
380-60 2 2.9 ——
380/415-50 2 2.3 ——
230-50 2 3.8 ——
030
230-60 2 4.8 ——
208/230-60 2 5.3 ——
460-60 2 2.4 ——
575-60 2 1.9 ——
380-60 2 2.9 ——
032 380/415-50 2 2.3 1 3.8
230-50 2 3.8 1 6.3
035
230-60 2 4.8 1 7.6
208/230-60 2 5.3 1 8.4
460-60 2 2.4 1 3.8
575-60 2 1.9 1 3.0
380-60 2 2.9 1 4.6
380/415-50 2 2.3 1 3.8
230-50 2 3.8 1 6.3
040
230-60 2 4.8 1 7.6
208/230-60 2 5.3 1 8.4
460-60 2 2.4 1 3.8
575-60 2 1.9 1 3.0
380-60 2 2.9 1 4.6
042 380/415-50 2 2.3 2 2.3
230-50 2 3.8 2 3.8
045
230-60 2 4.8 2 4.8
208/230-60 2 5.3 2 5.3
460-60 2 2.4 2 2.4
575-60 2 1.9 2 1.9
380-60 2 2.9 2 2.9
380/415-50 2 2.3 2 2.3
230-50 2 3.8 2 3.8
050
230-60 2 4.8 2 4.8
208/230-60 2 5.3 2 5.3
460-60 2 2.4 2 2.4
575-60 2 1.9 2 1.9
380-60 2 2.9 2 2.9
055
230-60 2 4.8 2 4.8
208/230-60 2 5.3 2 5.3
460-60 2 2.4 2 2.4
575-60 2 1.9 2 1.9
380-60 2 2.9 2 2.9
PUMP
OPTION
PUMP
SIZE
PUMP
RPM
UNIT VOLTAGE FLA
(each)
LRA
(each)
V-Hz (3 Ph)
‘A’or ‘F’
1.5 HP
3500 230-60 4.0 32.0
3500 208/230-60 4.4 36.0
3500 460-60 2.0 16.0
3500 575-60 1.6 14.4
3500 380-60 2.4 21.8
1.0 HP 2925 380/415-50 1.7 16.0
2925 230-50 2.8 32.0
‘B’, ‘C’
‘G’or ‘H’
2.0 HP
3490 230-60 5.2 42.0
3490 208/230-60 5.8 47.0
3490 460-60 2.6 21.0
3490 575-60 2.1 18.8
3490 380-60 3.1 28.4
1.5 HP 2910 380/415-50 2.4 21.5
2910 230-50 4.0 42.0
‘D’or ‘J’
3.0 HP
3480 230-60 7.4 53.0
3480 208/230-60 8.2 58.0
3480 460-60 3.7 26.5
3480 575-60 3.0 25.6
3480 380-60 4.5 38.7
2.0 HP 2900 380/415-50 3.1 29.0
2900 230-50 5.1 53.0
‘E’or ‘K’
5.0 HP
3450 230-60 12.6 126.0
3450 208/230-60 13.9 136.8
3450 460-60 6.3 63.0
3450 575-60 5.0 55.4
3450 380-60 7.6 83.9
3.0 HP 2850 380/415-50 5.3 68.0
2850 230-50 8.7 126.0
FLA —Full Load Amps
LRA —Locked Rotor Amps