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OH8FA119D60
ALTERATIONS REQ’D FOR A/C @ DESIGN EXTERNAL STATIC PRESSURE
COOLING UNIT
HTG Speed by Input
Low Mid High
Fire Fire Fire
Recommended CLG Speed
36,000
L/ML ML/MH MH/H Low (L)
42,000
L/ML ML/MH MH/H Med Low (ML)
48,000
L/ML ML/MH MH/H Med High (MH)
60,000
L/ML ML/MH MH/H High (H)
Figure 19B: Heating speed by input
Speed vs. color code for PSC Motor:
Low = Red
Med-Low = Blue
Med-High = Yellow
High = Black
Speed Tap\ Static
Pressure
Furnace Airflow (CFM) vs. External Static pressure (in. WC.)
0.1 0.2 0.3 0.4 0.5 0.6 0.7
Low
1254 1254 1251 1246 1221 1189 1126
ML
1473 1464 1460 1437 1415 1377 1329
MH
1733 1731 1718 1705 1686 1660 1627
High
2300 2243 2224 2166 2099 2048 1754
Furnace Motor Current Draw (Amps)/Watts vs. External Static pressure (in. WC.)
Low
6.6/648 6.6/648 6.4/639 6.2/630 6.0/612 5.8/592 5.4/565
ML
7.6/772 7.2/739 7.1/730 6.8/704 6.6/683 6.3/661 6.1/641
MH
9.0/908 9.0/905 8.7/888 8.5/871 8.3/842 8.0/818 7.7/796
High
12.5/1270 11.7/1200 11.2/1150 10.7/1110 10.2/1060 9.7/1020 9.2/969
Speed Tap\ Static
Pressure
High Fire Temperature Rise vs. External Static pressure (in. WC.)
0.1 0.2 0.3 0.4 0.5 0.6 0.7
Low
98 98 98 99 101 103 109
ML
83 84 84 86 87 89 93
MH
71 71 72 72 73 74 76
High
53 55 55 57 59
60 70
Speed Tap\ Static
Pressure
Mid Fire Temperature Rise vs. External Static pressure (in. WC.)
0.1 0.2 0.3 0.4 0.5 0.6 0.7
Low
88 88 88 89 90 93 98
ML
75 75 75 77 78 80 83
MH
64 64 64 65 65 66
68
High
48 49 50 51 52 54 63
Speed Tap\ Static
Pressure
Low Fire Temperature Rise vs. External Static pressure (in. WC.)
0.1 0.2 0.3 0.4 0.5 0.6 0.7
Low
75 75 75 75 77 79 83
ML
64 64 64 65 66 68
70
MH
54 54 55 55 56 56 58
High
41 42 42 43 45 46 53