Technical information
BLOWER PERFORMANCE SPECIFICATIONS
14 Rev. 1
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.
6 The dashed (---) areas indicate a temperature rise not recommended for this model.
7. The above chart is for U.S. furnaces installed at 0-2000 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
@ 0.5"
ESP CFM Rise CFM Rise CFM Rise CFM Rise CFM Rise CFM Rise
HIGH 3.0 1455 --- 1430 --- 1360 --- 1255 --- 1160 --- 1040 ---
GCIC045**30
MED 2.5 1255 --- 1200 --- 1150 --- 1075 --- 990 --- 890 38
(Low) MED-LO 2.0 1010 --- 980 35 940 36 880 39 810 42 700 49
LOW 1.5 775 44 745 46 710 48 655 52 560 61 435 ---
HIGH 3.0 1455 --- 1420 --- 1365 --- 1275 --- 1145 --- 1015 50
GCIC070**30
MED 3.0 1110 46 1090 47 1050 48 1015 50 935 54 845 60
(Med-Lo) MED-LO 2.5 910 56 905 56 895 57 860 59 810 63 745 68
LOW 2.0 730 69 715 71 710 71 680 75 645 --- 490 ---
HIGH 3.5 1655 --- 1580 --- 1500 --- 1445 --- 1366 --- 1280 ---
GCIC070**40
MED 3.0 1530 --- 1470 --- 1400 --- 1345 --- 1280 --- 1210 ---
(Low) MED-LO 3.0 1090 47 1075 47 1055 48 1015 50 975 52 915 55
LOW 2.5 945 54 935 54 915 55 890 57 850 60 810 63
HIGH 3.5 1620 --- 1550 --- 1470 46 1385 49 1265 54 1165 59
GCIC090**30
MED 3.0 1415 48 1355 50 1285 53 1215 56 1120 61 1015 67
(High) MED-LO 2.0 1025 67 1010 68 990 69 945 72 890 --- 815 ---
LOW 1.5 850 --- 840 --- 810 --- 790 --- 750 --- 675 ---
HIGH 5.0 2110 --- 2030 --- 1960 --- 1870 --- 1780 --- 1680 ---
GCIC090**50
MED 4.0 1830 --- 1765 --- 1710 --- 1640 --- 1550 --- 1470 46
(Med-Lo) MED-LO 3.5 1260 54 1255 54 1230 55 1200 57 1170 58 1115 61
LOW 3.0 1015 67 1000 68 980 70 964 71 930 73 875 ---
HIGH 4.0 1960 --- 1890 45 1825 46 1745 49 1660 51 1580 54
GCIC115**40
MED 3.5 1725 49 1685 50 1640 52 1585 53 1515 56 1440 59
(High) MED-LO 3.0 1440 59 1425 60 1405 60 1380 61 1335 64 1275 67
LOW 2.5 1035 --- 1025 --- 1015 --- 1005 --- 975 --- 955 ---
HIGH 5.0 2100 --- 2060 --- 2000 --- 1915 --- 1840 46 1750 48
GCIC115**50
MED 5.0 1915 --- 1890 45 1840 46 1775 48 1710 50 1635 52
(Med) MED-LO 4.0 1535 55 1516 56 1485 57 1455 58 1410 60 1355 63
LOW 3.0 1175 72 115 73 1140 74 1120 --- 1090 --- 1060 ---
HIGH 5.0 225545217047206549197051184555173558
GCIC140**50
MED 5.0 2170 47 2045 50 1945 52 1855 55 1750 58 1650 61
(High) MED-LO 4.0 1845 55 1790 57 1720 59 1620 63 1525 66 1445 70
LOW 3.5 1425 71 1390 73 1370 74 1320 --- 1265 --- 1185 ---
(CFM & Temperature Rise vs. External Static Pressure)
GCIC Blower Performance
Model
Heating Speed
As Shipped
MOTOR
SPEED
External Static Pressure (Inches Water Column)
0.1 0.2 0.3 0.4 0.5 0.6
(
)