Technical information

BLOWER PERFORMANCE SPECIFICATIONS
15
1. CFM in chart is without filters(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. Installer must adjust blower cooling 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 The dashed (---) areas indicate a temperature rise not recommended for this model.
7. The above chart is for U.S. furnaces installed at 0-4000 feet. 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.
Tons AC
at 0.5" 0.6 0.7 0.8
ESP CFM RISE CFM RISE CFM RISE CFM RISE CFM RISE CFM CFM CFM
HIGH 3.0 1327 --- 1342 --- 1305 --- 1251 --- 1195 --- 1128 1056 969
GCCA045BX30 MED 2.5 1195 --- 1179 --- 1136 35 1092 36 1037 38 988 918 839
(MED-LO) MED-LO 2.0 979 40 949 42 906 43 862 46 816 48 791 736 668
LOW 1.5 764 52 736 54 703 56 668 59 621 63 589 537 477
HIGH 3.5 1551 69 1499 40 1445 42 1390 44 1324 46 1256 1183 1105
GCCA070BX30 MED 3.0 1383 44 1347 45 1287 47 1240 49 1191 51 1123 1069 1002
(MED) MED-LO 2.5 1176 52 1139 53 1104 55 1057 57 1016 60 960 908 846
LOW 2.0 928 65 891 --- 867 --- 824 --- 794 --- 747 701 651
HIGH 4.0 1911 --- 1838 --- 1762 --- 1674 35 1590 37 1501 1407 1294
GCCA70BX40 MED 3.5 1674
35
1609 37 1551 38 1481 40 1407 42 1329 1234 1157
(MED-LO) MED-LO 3.0 1481 40 1407 42 1352 44 1329 44 1234 48 1157 1076 972
LOW 2.5 1282 46 1234 48 1183 50 1117 53 1047 56 987 906 818
HIGH 4.0 1867 42 1797 44 1730 46 1660 47 1581 50 1498 1403 1316
GCCA090BX40 MED 3.5 1654 48 1594 49 1531 51 1485 53 1403 56 1263 1239 1157
(HIGH) MED-LO 3.0 1452 54 1407 56 1353 58 1295 61 1225 64 1156 1083 1005
LOW 2.5 1255 63 1206 65 1165 68 1115 --- 1056 --- 997 931 849
HIGH 5.0 2153 37 2096 38 2030 39 1969 40 1891 42 1809 1714 1605
GCCA090BX50 MED 4.5 1775 45 1740 45 1696 47 1651 48 1595 50 1527 1446 1359
(MED-LO) MED-LO 3.5 1537 52 1487 53 1456 54 1414 56 1370 58 1325 1255 1180
LOW 3.0 1288 61 1273 62 1250 63 1210 65 1169 --- 1126 1073 998
HIGH 5.0 2130 47 2079 49 1982 51 1936 52 1849 55 1756 1677 1574
GCCA115BX50 MED 4.5 1815 56 1766 57 1716 59 1651 61 1604 63 1517 1451 1361
(MED) MED-LO 3.5 1616 63 1573 64 1536 66 1484 68 1431 --- 1375 1310 1233
LOW 3.0 1424 --- 1382 73 1361 --- 1310 --- 1256 --- 1200 1134 1072
GCCA***BX** Blower Performance
(CFM & Temperature Rise vs. External Static Pressure)
0.10.20.30.40.5
Model
Heating Speed
As Shipped
Motor
Speed
External Static Pressure (Inches Water Column)
(
)