27
Table 22 — Fan Performance — 48ZG,ZN,ZT,ZW,Z6,Z8 and 50ZG,ZN,ZT,ZW,ZX,ZZ,Z2,Z3,Z6,Z7,Z8,Z9105
Units With Airfoil Fan*
LEGEND
*If calculating static pressure for a 48 Series unit, be sure to add gas
heat pressure drop from Table 30C.
NOTES:
1. Fan performance is based on wet coils and clean 2-in. filters.
2. For return fan (48Z6,Z8 and 50Z6,Z7,Z8,Z9) and high-capacity
power exhaust (48ZT,ZW and 50ZT,ZW,ZX,ZZ) units, add com-
ponent pressure drop for economizer. Do not add component
pressure drop for power exhaust.
3. See Table 30C before using Fan Performance tables.
4. Conversion — Bhp to kW:
See Tables 26-28 for motor efficiency.
AIRFLOW
(Cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
0.30 0.60 0.90 1.20 1.50 1.80 2.10 2.40
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
20,000 798 6.60 838 7.80 876 8.98 913 10.18 950 11.31 985 12.59 1021 13.91 1056 15.28
22,000 870 8.37 907 9.66 942 10.83 977 12.14 1010 13.47 1043 14.83 1076 16.22 1108 17.65
24,000 942 10.42 977 11.73 1010 13.13 1042 14.54 1073 15.96 1103 17.40 1134 18.87 1163 20.37
26,000 1015 12.73 1047 14.26 1078 15.77 1108 17.28 1137 18.79 1166 20.32 1194 21.87 1222 23.44
28,000 1088 15.52 1118 17.15 1147 18.77 1176 20.38 1203 21.99 1230 23.61 1257 25.25 1283 26.90
30,000 1162 18.68 1190 20.43 1217 22.15 1244 23.87 1270 25.58 1296 27.29 1321 29.01 1345 30.75
32,000 1235 22.25 1262 24.12 1288 25.94 1313 27.76 1338 29.57 1362 31.38 1386 33.20 1409 35.02
34,000 1309 26.26 1335 28.23 1359 30.17 1383 32.09 1407 34.00 1430 35.91 1452 37.82 1475 39.73
36,000 1383 30.73 1407 32.80 1431 34.85 1454 36.87 1476 38.89 1498 40.89 1520 42.90 1541 44.90
38,000 1457 35.67 1480 37.85 1503 40.00 1525 42.13 1546 44.24 1567 46.36 1588 48.46 1608 50.56
40,000 1532 41.12 1554 43.40 1575 45.65 1596 47.88 1616 50.10 1637 52.31 1657 54.51 1676 56.71
AIRFLOW
(Cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
2.70 3.00 3.30 3.60 3.90 4.20 4.50 4.80
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
20,000 1090 16.67 1124 18.10 1157 19.56 1190 21.05 1222 22.56 1253 24.09 1284 25.63 1314 27.19
22,000 1140 19.11 1171 20.61 1202 22.14 1233 23.69 1263 25.28 1293 26.88 1323 28.51 1352 30.16
24,000 1193 21.90 1222 23.45 1252 25.04 1280 26.67 1309 28.31 1337 29.99 1365 31.69 1393 33.42
26,000 1250 25.04 1277 26.67 1304 28.33 1331 30.01 1358 31.72 1385 33.46 1411 35.22 1437 37.01
28,000 1309 28.57 1335 30.27 1360 32.00 1386 33.75 1411 35.52 1436 37.32 1461 39.15 1486 40.99
30,000 1370 32.50 1394 34.28 1418 36.08 1442 37.89 1466 39.74 1490 41.60 1513 43.49 1537 45.40
32,000 1433 36.87 1456 38.72 1479 40.58 1501 42.48 1524 44.38 1546 46.32 1568 48.27 1591 50.25
34,000 1497 41.66 1519 43.60 1540 45.55 1562 47.52 1583 49.50 1605 51.50 1626 53.52 1647 55.56
36,000 1562 46.92 1583 48.94 1604 50.97 1624 53.02 1645 55.08 1665 57.15 1685 59.25 1705 61.35
38,000 1628 52.66 1648 54.78 1668 56.89 1688 59.02 1707 61.16 1727 63.31 1746 65.47 1765 67.65
40,000 1696 58.91 1715 61.10 1734 63.31 1752 65.52 1771 67.74 1790 69.97 — — — —
AIRFLOW
(Cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
5.10 5.40 5.70 6.00
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
20,000 1343 28.77 1372 30.35 1400 31.94 1428 33.55
22,000 1380 31.82 1408 33.50 1435 35.20 1462 36.90
24,000 1420 35.16 1447 36.92 1473 38.70 1499 40.49
26,000 1463 38.82 1489 40.66 1514 42.51 1539 44.38
28,000 1510 42.87 1535 44.77 1559 46.69 1583 48.63
30,000 1560 47.34 1583 49.30 1606 51.28 1629 53.28
32,000 1613 52.25 1635 54.27 1657 56.31 1678 58.37
34,000 1668 57.63 1689 59.70 1710 61.80 1730 63.93
36,000 1725 63.48 1745 65.63 1765 67.79 1785 69.97
38,000 1784 69.85 — — ————
40,000 ————————
48/50ZN,ZW,ZZ,Z3,Z8,Z9 units only.
Bhp — Brake Horsepower
Kilowatts = Bhp x .746
Motor efficiency