Specification

GUH92A Models -038A3 -054B4 -072B4 -072C5 -090C5 -108D5 -120D5
Input-BTUH
1
38,000 54,000 72,000 72,000 90,000 108,000 120,000
Heating Cap. BTUH 35,000 49,700 66,000 66,000 82,800 99,000 110,400
AFUE 92.1 92.1 92.1 92.1 92.1 92.1 92.1
Blower D x W 10 x 6 11 x 8 11 x 8 10 x 10 11 x 10 11 x 10 11 x 10
Motor HP/Speed/Type 1/3-4-PSC 1/2-4-PSC 1/2-4-PSC 1/2-4-PSC 1.0-4-PSC 1.0-4-PSC 1.0-4-PSC
Heating Speed* Med-Low Med-Low Med-High Med-High Med-High Med-High Med-High
Cooling Speed* High High High High High High High
Motor FLA 4.80 8.20 8.20 7.50 13.75 13.75 13.75
Rated Ext. SP in W.C. 0.5 0.5 0.5 0.5 0.5 0.5 0.5
Temp. Rise Range
o
F 30-60 30-60 35-65 35-65 35-65 40-70 40-70
Shipping Weight (lbs) 100 120 125 130 135 155 155
GUH92-
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
-038A3 38K
High*
1330 24 1285 25 1230 26 1175 28 1125 29 1055 31 985 33 925 35
Med Hi 1195 27 1150 28 1100 29 1060 31 1000 32 940 34 875 37 790 41
M-Low
†
840 39 825 39 800 40 770 42 730 44 685 47 640 51 560 58
Low 680 48 675 48 655 49 620 52 600 54 560 58 515 63 450 72
-054B4 54K
High*
1630 28 1595 29 1560 29 1525 30 1480 31 1430 32 1365 34 1320 35
Med Hi 1315 35 1280 36 1260 37 1230 37 1200 38 1160 40 1120 41 1060 43
M-Low
†
980 47 955 48 925 50 890 52 855 54 825 56 775 59 715 64
Low 755 61 725 63 690 67 650 71 615 75 580 79 545 84 510 90
-072B4 72K
High*
1670 37 1630 38 1600 38 1550 40 1495 41 1450 42 1390 44 1300 47
Med Hi
†
1325 46 1300 47 1280 48 1245 49 1220 50 1165 53 1140 54 1080 57
M-Low 1180 52 1165 53 1140 54 1100 56 1075 57 1040 59 985 62 910 67
Low 940 65 910 67 870 70 935 66 815 75 790 78 730 84 640 96
-072C5 72K
High*
1970 31 1865 33 1780 34 1695 36 1615 38 1505 41 1385 44 1275 48
Med Hi
†
1845 33 1780 34 1715 36 1615 38 1530 40 1440 43 1340 46 1230 50
M-Low 1305 47 1250 49 1200 51 1150 53 1090 56 1040 59 965 64 865 71
Low 1185 52 1145 54 1110 55 1065 58 1020 60 965 64 905 68 840 73
-090C5 90K
High*
2240 34 2175 35 2100 37 2040 38 1985 39 1910 40 1825 42 1725 44
Med Hi
†
2095 37 2040 38 2000 38 1935 40 1875 41 1825 42 1765 43 1680 46
M-Low 1775 43 1740 44 1705 45 1655 46 1615 47 1555 49 1490 51 1335 57
Low 1465 52 1445 53 1420 54 1385 55 1360 56 1325 58 1285 60 1260 61
-108D5 108K
High*
2115 43 2075 44
2020 46 1955 47 1890 49 1822 50 1720 53 1660 55
Med Hi
†
1980 46 1935 48 1880 49 1830 50 1780 52 1720 53 1650 56 1555 59
M-Low 1650 56 1645 56 1610 57 1575 58 1515 61 1485 62 1400 66 1330 69
Low 1370 67 1345 68 1300 71 1290 71 1260 73 1240 74 1190 77 1140 81
-120D5 120K
High*
2115 48 2075 49 2020 51 1955 52 1890 54 1822 56 1720 59 1660 62
Med Hi
†
1980 52 1935 53 1880 54 1830 56 1780 57 1720 59 1650 62 1555 66
M-Low 1650 62 1645 62 1610 63 1575 65 1515 67 1485 69 1400 73 1330 77
Low 1370 75 1345 76 1300 79 1290 79 1260 81 1240 82 1190 86 1140 90
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
Upow Specications
3
* Factory setting
Gas connection for all models is 1/2" N.P.T.
1
Ratings to 2,000 ft. Over 2,000 ft, reduce 4% for each 1,000 ft. above sea level.