Sterlco 30RA Outdoor Air Cooled Central Chillers 10-60 Tons - Manual (Page 3)

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