Technical information

BLOWER PERFORMANCE SPECIFICATIONS
13 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 1460 --- 1400 --- 1345 --- 1280 --- 1200 --- 1110 ---
GUIC045**30
MED 2.5 1200 --- 1150 --- 1100 --- 1050 --- 980 35 900 38
(Low) MED-LO 2.0 935 36 910 37 885 39 845 40 790 43 710 48
LOW 1.5 700 49 685 50 665 51 635 54 575 59 425 ---
HIGH 3.0 1555 --- 1505 --- 1440 35 1365 37 1290 39 1180 43
GUIC070**30
MED 3.0 1325 38 1305 39 1250 41 1200 42 1140 44 1060 48
(Med-Lo) MED-LO 2.5 1090 47 1080 47 1055 48 1020 50 970 52 905 56
LOW 2.0 760 --- 750 --- 750 --- 735 --- 700 --- 645 ---
HIGH 3.5 1695 --- 1625 --- 1580 --- 1520 --- 1450 35 1365 37
GUIC070**40
MED 3.0 1485---145035140036135038129539123541
(Low) MED-LO 3.0 123541120042118043114044111545105048
LOW 2.5 1095 46 1070 47 1050 48 1025 49 975 52 950 53
HIGH 3.5 163042156044155044146547138049127553
GUIC090**30
MED 3.0 1360 50 1325 51 1290 53 1215 56 1155 59 1070 64
(High) MED-LO 2.0 920 --- 920 --- 900 --- 890 --- 850 --- 800 ---
LOW 1.5 770 --- 750 --- 740 --- 730 --- 690 --- 660 ---
HIGH 5.0 2250 --- 2185 --- 2120 --- 2030 --- 1975 --- 1885 ---
GUIC090**50
MED 4.0 1775 --- 1750 --- 1735 --- 1690 40 1650 41 1600 43
(Med-Lo) MED-LO 3.5 132052131552131552131552128053124055
LOW 3.0 1180 58 1180 58 1175 58 1170 58 1140 60 1120 61
HIGH 4.0 183546178048173049166051159053153055
GUIC115**40
MED 3.5 1630 52 1595 53 1540 55 1490 57 1440 59 1375 62
(High) MED-LO 3.0 1320 64 1305 65 1290 66 1260 67 1200 --- 1180 ---
LOW 2.5 1140 --- 1145 --- 1120 --- 1100 --- 1065 --- 1030 ---
HIGH 5.0 233036224538216539206541198543188545
GUIC115**50
MED 5.0 2120 40 2070 41 2020 42 1940 44 1850 46 1775 48
(Med) MED-LO 4.0 187545184046180047173549168550160053
LOW 3.0 1290 --- 1275 --- 1250 --- 1235 --- 1210 --- 1170 ---
HIGH 5.0 2455 --- 2390 --- 2290 --- 2200 46 2050 49 1935 52
GUIC140**50
MED 5.0 2050 49 2025 50 1965 52 1890 54 1810 56 1715 59
(High) MED-LO 4.0 171559170060166061161563155565147069
LOW 3.5 1450 70 1435 71 1415 72 1380 73 1340 --- 1280 ---
(CFM & Temperature Rise vs. External Static Pressure)
GUIC 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
(
)