8
Table 3 — Fan Performance — 48/50N 75-90 Nominal Ton Units Standard Supply Fan Data
LEGEND
Bhp —
Brake Horsepower
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
0.2
0.4
0.6
0.8
1.0
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
15,000
734
3.74
764
4.22
794
4.71
823
5.22
851
5.73
18,000
846
5.75
873
6.30
898
6.87
924
7.45
948
8.04
20,000
923
7.45
947
8.06
971
8.68
994
9.31
1017
9.95
22,000
1001
9.48
1023
10.14
1045
10.82
1066
11.50
1088
12.20
24,000
1080
11.87
1100
12.59
1120
13.32
1140
14.05
1160
14.80
26,000
1159
14.65
1178
15.43
1197
16.21
1215
17.00
1234
17.80
28,000
1238
17.86
1256
18.69
1274
19.52
1291
20.37
1308
21.22
30,000
1318
21.52
1335
22.41
1352
23.30
1368
24.20
1384
25.10
32,000
1399
25.68
1414
26.61
1430
27.56
1446
28.51
1461
29.47
34,000
1479
30.35
1494
31.33
1509
32.34
1524
33.34
1538
34.36
36,000
1560
35.56
1574
36.61
1588
37.66
1602
38.72
1616
39.78
38,000
1641
41.36
1655
42.46
1668
43.57
1681
44.68
1694
45.80
40,000
1722
47.77
1735
48.92
1748
50.09
1760
51.25
1773
52.43
42,000
—
—
—
—
—
—
—
—
—
—
45,000
—
—
—
—
—
—
—
—
—
—
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
1.2
1.4
1.6
1.8
2.0
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
15,000
878
6.25
905
6.79
931
7.33
957
7.88
982
8.44
18,000
973
8.64
996
9.25
1020
9.87
1043
10.50
1065
11.13
20,000
1039
10.61
1061
11.26
1083
11.94
1104
12.61
1125
13.29
22,000
1108
12.90
1129
13.61
1149
14.33
1169
15.06
1189
15.79
24,000
1179
15.56
1199
16.32
1218
17.09
1236
17.87
1255
18.66
26,000
1252
18.61
1270
19.42
1288
20.24
1305
21.08
1323
21.91
28,000
1326
22.09
1343
22.95
1359
23.83
1376
24.71
1392
25.60
30,000
1400
26.02
1416
26.94
1432
27.86
1448
28.79
1464
29.73
32,000
1476
30.44
1491
31.41
1506
32.39
1521
33.37
1536
34.37
34,000
1553
35.37
1567
36.39
1581
37.43
1595
38.47
1609
39.51
36,000
1630
40.86
1643
41.94
1657
43.03
1670
44.11
1684
45.21
38,000
1707
46.93
1720
48.06
1733
49.20
1746
50.35
1759
51.49
40,000
1785
53.61
1798
54.80
—
—
—
—
—
—
42,000
—
—
—
—
—
—
—
—
—
—
45,000
—
—
—
—
—
—
—
—
—
—
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
2.2
2.4
2.6
2.8
3.0
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
15,000
1006
9.01
1030
9.58
1054
10.16
1077
10.75
1100
11.34
18,000
1087
11.77
1109
12.42
1131
13.08
1152
13.74
1173
14.41
20,000
1146
13.99
1167
14.69
1187
15.39
1207
16.11
1227
16.83
22,000
1209
16.54
1228
17.29
1247
18.05
1266
18.81
1284
19.58
24,000
1273
19.45
1291
20.25
1309
21.06
1327
21.87
1345
22.69
26,000
1340
22.76
1357
23.61
1374
24.47
1391
25.33
1408
26.20
28,000
1409
26.49
1425
27.39
1441
28.30
1457
29.22
1473
30.14
30,000
1479
30.68
1494
31.64
1510
32.60
1525
33.56
1540
34.54
32,000
1551
35.37
1565
36.37
1580
37.39
1594
38.40
1608
39.43
34,000
1623
40.57
1637
41.63
1651
42.69
1665
43.76
1678
44.83
36,000
1697
46.32
1710
47.43
1723
48.55
1737
49.67
1750
50.79
38,000
1772
52.66
1784
53.81
1797
54.98
—
—
—
—
40,000
—
—
—
—
—
—
—
—
—
—
42,000
—
—
—
—
—
—
—
—
—
—
45,000
—
—
—
—
—
—
—
—
—
—
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
3.2
3.4
3.6
3.8
4.0
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
15,000
1122
11.94
1145
12.55
1166
13.16
1188
13.78
1209
14.40
18,000
1193
15.09
1214
15.77
1234
16.46
1253
17.16
1273
17.86
20,000
1246
17.55
1265
18.29
1284
19.03
1303
19.77
1322
20.53
22,000
1303
20.36
1321
21.14
1339
21.93
1357
22.72
1374
23.52
24,000
1362
23.52
1379
24.35
1396
25.19
1413
26.04
1430
26.89
26,000
1424
27.08
1440
27.96
1457
28.86
1473
29.75
1489
30.65
28,000
1488
31.07
1504
32.01
1519
32.94
1535
33.89
1550
34.84
30,000
1555
35.52
1570
36.50
1584
37.50
1599
38.49
1613
39.49
32,000
1623
40.46
1637
41.49
1651
42.53
1665
43.58
1679
44.64
34,000
1692
45.92
1705
47.01
1719
48.09
1732
49.20
1745
50.30
36,000
1762
51.92
1775
53.06
1788
54.21
—
—
—
—
38,000
—
—
—
—
—
—
—
—
—
—
40,000
—
—
—
—
—
—
—
—
—
—
42,000
—
—
—
—
—
—
—
—
—
—
45,000
—
—
—
—
—
—
—
—
—
—
Summary of Contents for WeatherExpert 48N2
Page 135: ...135 Fig 18 48 50N Typical Power Schematic Nominal 075 Ton Unit Shown ...
Page 136: ...136 Fig 19 48 50N Typical Power Schematic Nominal Ton 90 150 Units Shown ...
Page 137: ...137 Fig 20 48 50N Main Base Board Input Output Connections ...
Page 138: ...138 Fig 21 48 50N RXB EXB CEM Input Output Connections a48 9307 ...
Page 139: ...139 Fig 22 48 50N EXV SCB Input Output Connections a48 9308 ...
Page 140: ...140 Fig 23 48N Typical Modulating Gas Heat Unit Control Wiring ...
Page 141: ...141 Fig 24 50N Typical Electric Heat Unit Control Wiring ...
Page 144: ...144 Fig 27 48N Typical Gas Heat Section Wiring Nominal Ton 120 to 150 Units ...
Page 145: ...145 Fig 28 48 50N Typical Power Component Control Wiring 460 v ...
Page 146: ...146 Fig 29 48 50N Component Control Wiring 575 v Nominal Ton 075 to 150 Units ...
Page 147: ...147 Fig 30 48 50N Component Arrangement Power Box ...
Page 148: ...148 Fig 31 48 50N Component Arrangement Control Box ...
Page 240: ...240 APPENDIX D VFD INFORMATION CONT Fig G VFD Bypass Wiring Diagram WHEN USED ...