GCSS96 Installation Manual
41
A
IRFLOW
*MSS92*** & *CSS92***A*
1. CFM in chart is without filter(s). Filters do not ship with this furnace, but must
be provided by the installer. If the furnace requires two return filters, this
chart assumes both filters are installed.
2. All furnaces ship as high speed cooling and medium-speed heating. Installer
must adjust blower cooling & heating speed as needed.
3. For most jobs, about 400 CFM per ton when cooling is desirable.
4. INSTALLATION IS TO BE ADJUSTED TO OBTAIN TEMPERATURE RISE WITHIN THE
RANGE SPECIFIED ON THE RATING PLATE.
5. The chart is for information only. For satisfactory operation, external static
pressure must not exceed value shown on rating plate. The shaded area
indicates ranges in excess of maximum external static pressure allowed when
heating. The data for 0.6" w.c. to 0.8" w.c. is shown for air conditioning
purposes only.
6. At higher altitudes, a properly derated unit will have approximately the same
temperature rise at a particular CFM, while the ESP at that CFM will be lower.
2.0 1028 33 993 34 959 35 915 36 866 39 810 742 671
LOW 1.5 938 36 903 37 873 38 834 40 791 42 746 672 597
*M SS920403A N
HIGH 3.0 1260 N/A 1205 N/A 1153 N/A 1081 31 1023 33 946 871 790
M ED 2.5 1156 N/A 1115 N/A 1074 31 1019 33 959 35 893 817 742
MED-
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
AC CFM RISE CFM RIS CFM RISE CFM RISE CFM RISE CFM CFM CFM
*M SS920402B N
HIGH 3.0 1545 N/A 1495 N/A 1438 N/A 1369 N/A 1295 N/A 1212 1141 1034
M ED 2.5 1322 N/A 1290 N/A 1246 N/A 1209 N/A 1149 30 1078 1013 921
M ED- 2.0 1099 31 1077 32 1048 33 1019 33 985 35 928 859 772
LOW 1.5 976 35 969 35 923 37 896 38 858 40 817 763 683
*M SS920603B N
HIGH 3.0 1543 N/A 1484 N/A 1427 36 1363 37 1296 39 1209 1122 1020
M ED 2.5 1344 38 1315 39 1274 40 1223 42 1172 44 1097 1024 920
M ED- 2.0 1138 45 1108 46 1083 47 1046 49 1008 51 956 876 791
LOW 1.5 1002 51 987 52 962 N/A 929 N/A 899 N/A 847 796 716
*M SS920803B N
HIGH 3.0 1560 44 1505 45 1426 48 1366 50 1288 53 1194 1116 1006
M ED 2.5 1362 50 1313 52 1275 53 1225 56 1166 58 1097 1009 912
M ED- 2.0 1138 60 1116 61 1099 62 1053 65 1005 N/A 948 876 779
LOW 1.5 1010 N/A 1004 N/A 966 N/A 944 N/A 900 N/A 851 783 690
*M SS920804CN
HIGH 5.0 2053 N/A 1994 N/A 1921 35 1827 37 1720 40 1614 1501 1344
M ED 4.0 1858 37 1811 38 1749 39 1676 41 1589 43 1500 1397 1264
M ED- 3.5 1538 44 1516 45 1494 46 1459 47 1400 49 1335 1239 1129
LOW 3.0 1256 54 1244 55 1216 56 1206 57 1170 58 1113 1063 987
*M SS920805CN
HIGH 5.0 2256 30 2172 31 2107 32 2058 33 1959 35 1859 1762 1654
M ED 4.0 1980 34 1923 35 1882 36 1808 38 1722 40 1633 1559 1454
M ED- 3.5 1630 42 1593 43 1561 47 1523 49 1476 51 1432 1358 1270
LOW 3.0 1387 53 1332 54 1305 55 1258 N/A 1215 N/A 1159 1101 1032
*M SS921004CN
HIGH 5.0 2059 41 1952 44 1900 45 1802 47 1703 50 1609 1470 1340
M ED 4.0 1860 46 1792 48 1733 49 1656 51 1576 54 1477 1367 1248
M ED- 3.5 1530 56 1505 57 1470 58 1452 59 1385 62 1305 1221 1097
LOW 3.0 1255 N/A 1253 N/A 1223 N/A 1203 N/A 1158 N/A 1111 1058 932
*M SS921005CNAA
HIGH 5.0 2235 38 2166 39 2110 40 2021 42 1956 44 1855 1740 1618
M ED 4.0 1955 44 1921 44 1860 46 1808 47 1746 49 1645 1572 1461
M ED- 3.5 1658 51 1634 52 1590 54 1549 55 1494 57 1432 1359 1266
LOW 3.0 1418 60 1374 62 1348 63 1297 NA 1265 N/A 1219 1152 1106
*M SS921005CNAB
HIGH 5.0 2489 N/A 2420 35 2330 37 2250 38 2183 39 2091 1963 1803
M ED 4.0 2102 41 2050 42 2005 42 1944 44 1880 45 1798 1693 1602
M ED- 3.5 1768 48 1723 49 1690 50 1624 52 1580 54 1493 1436 1339
LOW 3.0 1474 58 1429 60 1388 61 1370 62 1313 65 1253 1168 1082
*M SS921205DN
HIGH 5.0 2355 43 2275 45 2177 47 2105 49 2014 51 1897 1770 1633
M ED 4.0 2050 50 1996 51 1957 52 1882 54 1815 56 1708 1598 1505
M ED- 3.5 1753 58 1703 60 1650 62 1601 64 1548 N/A 1461 1369 1264
LOW 3.0 1521 N/A 1451 N/A 1409 N/A 1328 N/A 1298 N/A 1237 1155 1042
*CSS920402B N
HIGH 3.0 1512 N/A 1446 N/A 1375 N/A 1301 N/A 1222 N/A 1137 1033 940
M ED 2.5 1356 N/A 1310 N/A 1261 N/A 1193 N/A 1122 30 1041 963 869
M ED- 2.0 1168 N/A 1133 30 1092 31 1053 32 984 35 929 858 753
LOW 1.5 1053 32 1006 34 976 35 934 36 887 38 811 754 663
*CSS920603B N
HIGH 3.0 1431 36 1363 37 1303 39 1236 41 1168 44 1082 1003 910
M ED 2.5 1305 39 1251 41 1197 43 1148 45 1076 48 1012 931 842
M ED- 2.0 1141 45 1109 46 1070 48 1017 50 969 53 904 826 737
LOW 1.5 1041 49 996 51 962 53 913 56 876 58 807 729 658
*CSS920804CN
HIGH 4.0 1881 36 1762 39 1703 40 1601 43 1516 45 1393 1310 1171
M ED 3.5 1758 39 1686 40 1628 42 1533 44 1441 47 1339 1249 1153
M ED- 3.0 1577 43 1523 45 1458 47 1400 49 1303 52 1228 1126 1030
LOW 2.5 1338 51 1306 52 1267 54 1215 56 1146 59 1086 1011 909