Brochure

4
GUH80-
Model
Htg
Input
BTUH
Motor
Speed
External Static Pressure (Inches Water Column)
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
CFM Rise CFM Rise CFM Rise CFM Rise CFM Rise CFM Rise CFM Rise CFM Rise
-045A3 45K
High*
1350 25 1290 26 1225 27 1155 29 1100 30 1025 33 950 35 885 38
Med Hi 1025 33 1015 33 1005 33 1000 33 990 34 920 36 855 39 775 43
M-Low
†
885 38 855 39 815 41 780 43 740 45 695 48 640 52 565 59
Low 700 48 675 49 655 51 620 54 590 56 555 60 515 65 465 72
-054A3 54K
High*
1350 30 1290 31 1225 33 1155 35 1100 36 1025 39 950 42 885 45
Med Hi 1025 39 1015 39 1005 40 1000 40 990 40 920 43 855 47 775 52
M-Low
†
885 45 855 47 815 49 780 51 740 54 695 58 640 63 565 71
Low 700 57 675 59 655 61 620 65 590 68 555 72 515 78 465 86
-072B4 72K
High*
1770 30 1720 31 1685 32 1645 32 1590 34 1550 34 1485 36 1415 38
Med Hi 1400 38 1360 39 1340 40 1310 41 1275 42 1245 43 1190 45 1125 47
M-Low
†
1235 43 1215 44 1180 45 1155 46 1130 47 1100 48 1060 50 1005 53
Low 975 55 940 57 930 57 890 60 865 62 840 63 810 66 775 69
-072C5 72K
High*
2030 26 1940 27 1860 29 1785 30 1695 31 1615 33 1535 35 1445 37
Med Hi 1935 28 1850 29 1780 30 1700 31 1340 40 1560 34 1470 36 1380 39
M-Low
†
1350 40 1290 41 1250 43 1205 44 1165 46 1110 48 1035 52 945 56
Low 1215 44 1160 46 1105 48 1065 50 1025 52 980 54 925 58 860 62
-090B4 90K
High*
1690 39 1655 40 1610 41 1560 43 1510 44 1455 46 1405 47 1340 50
Med Hi
†
1360 49 1325 50 1300 51 1280 52 1235 54 1190 56 1150 58 1065 63
M-Low 1215 55 1190 56 1155 58 1125 59 1090 61 1065 63 1015 66 965 69
Low 925 72 900 74 870 77 840 79 800 83 775 86 710 94 695 96
.090C5 90K
High*
2020 33 1935 34
1860 36 1780 37 1690 39 1600 42 1510 44 1410 47
Med Hi
†
1895 35 1830 36 1765 38 1685 40 1610 41 1525 44 1435 46 1330 50
M-Low 1345 50 1295 51 1250 53 1200 56 1155 58 1100 61 1035 64 950 70
Low 1190 56 1155 58 1115 60 1075 62 1040 64 980 68 940 71 870 77
-108C5 108K
High*
2295 35 2235 36 2180 37 2110 38 2050 39 1975 41 1900 42 1810 44
Med Hi
†
2130 38 2075 39 2035 39 1970 41 1915 42 1845 43 1765 45 1675 48
M-Low 1770 45 1750 46 1710 47 1675 48 1630 49 1585 50 1520 53 1430 56
Low 1445 55 1425 56 1410 57 1375 58 1350 59 1320 61 1275 63 1225 65
-126D5 126K
High*
2230 42 2180 43 2105 44 2045 46 1990 47 1915 49 1835 51 1740 54
Med Hi
†
2055 45 2005 47 1950 48 1920 49 1855 50 1790 52 1735 54 1665 56
M-Low 1705 55 1680 56 1640 57 1615 58 1565 60 1505 62 1440 65 1375 68
Low 1345 69 1360 69 1350 69 1300 72 1230 76 1290 72 1250 75 1220 77
Blower Performance Data - Upow
NOTES: 1. Temperature rises in the table are approximate; actual temperature rises may vary.
2. Temperature rises in shaded areas are for reference only; these conditions are not recommended.
3. Two openings are recommended for airflows above 1600 CFM if filter(s) adjacent to furnace.
Specifications shown for side return. See Technical Specifications for bottom return or two sides return.
* Factory set cooling speed
†
Factory set heating speed
Notes for Upflow Blower Specifications
WARNING
THIS FURNACE IS NOT APPROVED OR
RECOMMENDED FOR USE IN MOBILE HOMES