Specification

NOTE: 1. Temperature rises shown are approximate; actual temperature rises may vary.
2 Temperture 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.
Downflow built with top return configuration.
* Factory set cooling speed
†
Factory set heating speed
GDD
95A-
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
-054B4 54K
High* 1590 31 1563 32 1538 33 1513 33 1477 34 1430 35 1370 36 1312 38
Med Hi 1228 41 1207 41 1193 42 1169 43 1157 43 1127 44 1084 46 1037 48
M-Low
†
1096 46 1079 46 1061 47 1038 48 1010 50 986 51 957 52 919 54
Low 855 58 825 61 800 63 777 64 753 66 723 69 696 72 665 75
-072C5 72K
High* 2235 30 2176 31 2121 31 2067 32 2010 33 1936 34 1864 36 1783 37
Med Hi
†
2095 32 2052 32 2005 33 1957 34 1906 35 1852 36 1781 37 1709 39
M-Low 1871 36 1838 36 1797 37 1761 38 1716 39 1667 40 1602 42 1536 43
Low 1568 43 1552 43 1527 44 1485 45 1457 46 1418 47 1370 49 1343 50
-090C5 90K
High* 2208 38 2150 39 2089 40 2026 41 1959 43 1893 44 1825 46 1738 48
Med Hi
†
2065 40 2015 41 1970 42 1910 44 1866 45 1805 46 1737 48 1668 50
M-Low 1802 46 1773 47 1750 48 1703 49 1670 50 1623 51 1556 54 1490 56
Low 1490 56 1482 56 1464 57 1436 58 1407 59 1380 60 1329 63 1271 66
-118D5 118K
High* 2358 46 2299 48 2253 48 2191 50 2130 51 2060 53 1990 55 1903 57
Med Hi
†
2176 50 2135 51 2102 52 2046 53 1985 55 1932 57 1862 59 1777 61
M-Low 1873 58 1852 59 1816 60 1790 61 1750 62 1699 64 1643 66 1571 70
Low 1544 71 1528 72 1514 72 1499 73 1462 75 1441 76 1429 76 1386 79
Downow Specications
* 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.
Blower Performance - Downow
GDD95A Models -054B4 -072C5 -090C5 -118D5
Input-BTUH
1
54,000 72,000 90,000 118,000
Heating Cap. BTUH 51,300 68,400 85,500 112,100
AFUE 95.0 95.0 95.0 95.0
Blower D x W 11 x 8 11 x 10 11 x 10 11 x 10
Motor HP-Speed-Type 1/2-4-PSC 1.0-4-PSC 1.0-4-PSC 1.0-4-PSC
Heating Speed* Med-Low Med-High Med-High Med-High
Cooling Speed* High High High High
Motor FLA 8.60 13.70 13.70 13.75
Rated Ext. SP in W.C. 0.5 0.5 0.5 0.5
Temp. Rise Range
o
F 30-60 35-65 35-65 40-70
Shipping Weight (lbs/kg) 120/54.4 125/56.7 135/61.2 155/70.3
5
WARNING
THIS FURNACE IS NOT APPROVED OR
RECOMMENDED FOR USE IN MOBILE HOMES
NOTE: Furnace is not listed for use with fuels other than
natural or L.P. (propane) gas.
All models can be converted by a qualified distributor or local service
dealer to use L.P. (propane) gas. Factory approved kits must be used
to convert from natural to L.P. (propane) gas and may be ordered as
options.
For L.P. (propane) operation, refer to Conversion Kit instructions.