Nordyne SC Installation Instructions Manual page 37

MAXIMUM AIRFLOW & TEMPERATURE RISES (
Model Number
& Motor
Heating Input Speed
(Btuh)
*
HIGH
**
SD038D-24B
MED-H
Bottom Return
MED-L
(38,000)
LOW
*
HIGH
SD038D-24B
MED-H
Side Return
**
(38,000) MED-L
LOW
*
HIGH
SD054D-24B
MED-H
Bottom Return
**
MED-L
(54,000)
LOW
*
HIGH
SD054D-24B
MED-H
Side Return
**
(54,000) MED-L
LOW
*
HIGH
**
SD072D-35C
MED-H
Bottom Return
MED-L
(72,000)
LOW
*
HIGH
SD072D-35C **
MED-H
Side Return
MED-L
(72,000)
LOW
*
HIGH
SD72D-35C
**
MED-H
Side + Bottom
or 2 Sides
MED-L
(72,000)
LOW
*
HIGH
**
SD090D-35C
MED-H
Bottom Return
MED-L
(90,000)
LOW
*
HIGH
**
SD090D-35C
MED-H
Side Return
MED-L
(90,000)
LOW
*
HIGH
SD90D-35C
**
MED-H
Side + Bottom
or 2 Sides
MED-L
(90,000)
LOW
*SD SERIES UPFLOW / HORIZONTAL FURNACES
External Static Pressure (Inches Water Column)
0.1 0.2
CFM Rise CFM Rise CFM Rise CFM Rise CFM Rise CFM Rise CFM Rise CFM Rise
1519 — 1483 — 1433
1238 — 1216 — 1188
1094 31 1082 32 1052
841 40 817 42 801
1664 — 1631 — 1596
1272 — 1255 — 1249
1130 — 1114 31 1100
869 39 839 42 809
1519 33 1483 34 1433
1238 40 1216 41 1188
1094 46 1082 46 1052
841 59 817 — 801
1664 30 1631 31 1596
1272 39 1255 40 1249
1130 44 1114 45 1100
869 58 839 60 809
1933 — 1857 36 1780
1872 36 1804 37 1731
1320 51 1299 51 1264
1185 56 1170 57 1132
1916 35 1848 36 1773
1815 37 1771 38 1711
1259 53 1241 54 1224
1139 59 1120 60 1096
1954 — 1890 35 1824
1869 36 1805 37 1741
1287 52 1262 53 1231
1147 58 1115 60 1097
2288 36 2236 37 2161
2144 39 2093 40 2049
1874 44 1845 45 1806
1541 54 1516 55 1509
2273 37 2222 38 2164
2084 40 2039 41 2007
1784 47 1777 47 1749
1482 56 1470 57 1444
2328 36 2273 37 2224
2124 39 2108 40 2052
1825 46 1809 46 1781
1509 55 1488 56 1468
Table 8. *SD Upflow / Horizontal Furnaces
0
0.3 0.4 0.5
— 1397 — 1335
— 1164 — 1136 30
32 1034 33 1021 34
43 786 45 750 46
— 1546 — 1489
— 1217 — 1189
31 1079 31 1048 33
42 790 44 764 45
35 1397 36 1335 37
42 1164 43 1136 44
48 1034 48 1021 49
— 786 — 750
31 1546 32 1489 34
40 1217 41 1189 42
45 1079 46 1048 48
— 790 — 764
37 1695 39 1599 42
39 1639 41 1551 43
53 1233 54 1183 56
59 1102 60 1067 62
38 1692 39 1613 41
39 1641 41 1553 43
54 1192 56 1163 57
61 1075 62 1047 64
37 1741 38 1656 40
38 1685 40 1607 41
54 1197 56 1166 57
61 1075 62 1047 64
39 2092 40 2017 41
41 1985 42 1912 44
46 1766 47 1717 49
55 1486 56 1456 57
39 2098 40 2025 41
42 1955 43 1895 44
48 1725 48 1679 50
58 1432 58 1405 59
37 2151 39 2082 40
41 2018 41 1954 43
47 1752 48 1706 49
57 1440 58 1422 59
F) FOR
0.6 0.7
— 1272 — 1214 —
1092 31 1043 32
977 34 928 36
720 48 683 49
— 1433 — 1366 —
— 1145 30 1096 31
1025 33 987 35
739 47 711 48
1272 39 1214 41
1092 46 1043 48
977 51 928 54
— 720 — 683 —
1433 35 1366 37
1145 44 1096 46
1025 49 987 51
— 739 — 711 —
1498 45 1396 48
1458 46 1353 49
1126 59 1059 63
1015 — 947 —
1515 44 1426 47
1468 45 1373 49
1115 60 1056 63
1014 — 959 —
1564 43 1470 45
1516 44 1419 47
1117 60 1061 63
1014 — 959 —
1934 43 1841 45
1842 45 1764 47
1661 50 1582 53
1402 59 1361 61
1947 43 1864 45
1832 45 1750 48
1629 51 1576 53
1375 61 1339 62
2005 42 1920 43
1884 44 1813 46
1676 50 1615 52
1379 60 1351 62
0.8
1130 —
973 34
865 37
639 53
1285 —
1036 33
944 36
664 52
1130 44
973 51
865 58
639 —
1285 39
1036 48
944 53
664 —
1280 52
1237 54
963 —
856 —
1316 51
1270 52
982 —
884 —
1352 49
1308 51
966 —
884 —
1748 48
1668 50
1503 55
1294 64
1780 47
1665 50
1501 56
1286 65
1825 46
1725 48
1535 54
1292 64
37