Thermo Pride OH8FA119D60C Installation And Operation Manual page 38

For PSC systems, the ½ hp motor is equipped with 4 speeds. The unit is set for mid-fire temp rise @
66ºF. See table for proper blower motor set up:
OH6FA072D48
ALTERATIONS REQ'D FOR A/C @ DESIGN EXTERNAL STATIC PRESSURE
COOLING UNIT
24,000
30,000
36,000
42,000
48,000
Speed Tap\ Static
Pressure
Low
ML
MH
High
Low
ML
MH
High
Speed Tap\ Static
Pressure
Low
ML
MH
High
Speed Tap\ Static
Pressure
Low
ML
MH
High
Speed Tap\ Static
Pressure
Low
ML
MH
High
HTG Speed by Input
Low
Fire
Low
Low
Low
Low
Low
Furnace Airflow (CFM) vs. External Static pressure (in. WC.)
0.1 0.2 0.3
930 915 912
1155 1152 1130
1442 1432 1418
1802 1762 1705
Furnace Motor Current Draw (Amps) vs. External Static pressure (in. WC.)
3.3 3.1 3.0
4.2 4.0 3.9
5.4 5.2 5.0
6.6 6.4 6.0
High Fire Temperature Rise vs. External Static pressure (in. WC.)
0.1 0.2 0.3
90 91 91
72 72 74
58 58 59
46 47 49
Mid Fire Temperature Rise vs. External Static pressure (in. WC.)
0.1 0.2 0.3
72 73 73
58 58 59
46 47 47
37 38 39
Low Fire Temperature Rise vs. External Static pressure (in. WC.)
0.1 0.2 0.3
60 61 61
48 48 49
39 39 39
31 32 33
Figure 19A: Heating speed by input
Recommended CLG Speed
Mid High
Fire Fire
ML MH
ML MH
ML MH
ML MH
ML MH
0.4 0.5
910 822
1126 1085
1382 1334
1635 1569
2.9 2.6
3.7 3.6
4.7 4.4
5.7 5.5
0.4 0.5
92 101
74 77
60 62
51 53
0.4 0.5
73 81
59 61
48 50
41 42
0.4 0.5
61 68
49 51
40 42
34 35
33
Low
Med Low
Med High
Med High
High
0.6 0.7
774 730
1042 920
1293 1230
1493 1428
2.5 2.4
3.3 3.0
4.2 4.0
5.2 5.0
0.6 0.7
108 114
80 91
64 68
56 58
0.6 0.7
86 91
64 72
52 54
45 47
0.6 0.7
72 76
53 60
43 45
37 39