29733 R2 06/01/2003
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TABLE A-3 DIRECT DRIVE BLOWER SET-UP
BLOWER SET-UP COOLING CAPACITY
0.20 in. w.c. 0.50 in w.c.
FURNACE
MODEL BLOWER MOTOR
HP Speed Speed
Htg. CFM
Range 1 Tons 2 MOTOR
HP
Clg. CFM
Range
80F (060) Low Med - Low 629 - 972
80F (070) Med - Low Med - High 792 - 1223
80F (080)
G10 DD ½
Med - High High 857 - 1324
3 ½ 900 - 1150
120F (090) Med - Low Med - High 976 - 1508
120F (100) Med - High High 1084 - 1676
120F (120)
G10 DD ½
High High 1279 - 1977
3 ½ 800 - 1300
120F (090) Low Low 1106 - 1843
120F (100) Med - Low Med - Low 1229 - 2048
120F (120)
G12-10 DD ¾
Med - High High 1450 - 2417
5 ¾ 1400 - 1870
(1) Heating Range values based on temperature rise. Upper values may exceed measured airflow values in Table A-3. (2) Nominal Values Only
TABLE A-4 DIRECT DRIVE BLOWER CHARACTERISTICS
CFM
External Static Pressure - inches w.c.
Furnace
Model
Motor
hp Blower
Temp.
Rise
(DT)
Motor
FLA Speed
0.20 0.30 0.40 0.50 0.60 0.70
High 1368 1298 1223 1144 1046 938
Med-High 1318 1256 1178 1108 1007 909
Med-Low 1173 1132 1071 993 909 816
80F ½ G10 DD 60° - 90°F 7.7
Low 856 833 791 748 692 610
High 1604 1527 1446 1360 1245 1092
Med-High 1507 1425 1338 1270 1171 1035
Med-Low 1172 1146 1119 1064 977 879
120F ½ G10 DD 55° - 85°F 7.7
Low 810 771 731 690 645 597
High 1957 1911 1846 1797 1729 1658
Med-High 1764 1730 1695 1640 1584 1526
Med-Low 1677 1658 1603 1565 1506 1424
120F ¾ GT12-10 DD 45° - 75°F 12.5
Low 1446 1446 1446 1404 1315 1245