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All installations and services must be performed by qualified service personnel.
Appendix – C Airflow Charts
COOLING UNIT
24,000
30,000
36,000
42,000
48,000
Speed Tap\ Static
Pressure
Low
ML
MED
MH
High
Low
ML
MED
MH
High
Speed Tap\ Static
Pressure
Low
ML
MED
MH
High
Speed Tap\ Static
Pressure
Low
ML
MED
MH
High
Speed Tap\ Static
Pressure
Low
ML
MED
MH
High
OL6*A072D48
ALTERATIONS REQ'D FOR A/C @ DESIGN EXTERNAL STATIC PRESSURE
HTG Speed by Input
Low fire
Mid Fire
ML
MED
ML
MED
ML
MED
ML
MED
ML
MED
Furnace Airflow (CFM) vs. External Static pressure (in. WC.)
0.2
0.3
712
691
902
899
1113
1113
1270
1266
1670
1637
Motor Current Draw (Amps/Watts) vs. External Static pressure (in.
4.1/408
4.0/398
5.3/540
5.3/535
6.6/665
6.4/644
7.6/772
7.2/739
9.6/951
84/830
High Fire Temperature Rise vs. External Static pressure (in. WC.)
0.2
0.3
119
122
94
94
76
76
66
67
51
52
Mid Fire Temperature Rise vs. External Static pressure (in. WC.)
0.2
0.3
96
99
75
76
61
61
54
54
41
42
Low Fire Temperature Rise vs. External Static pressure (in. WC.)
0.2
0.3
79
81
62
63
51
51
44
44
34
34
42
High Fire
Recommended CLG Speed
MH
Med Low
MH
Med
MH
Med High
MH
High
MH
High
0.4
0.5
682
667
896
883
1109
1091
1250
1239
1605
1566
WC.)
4.0/395
3.9/385
5.2/527
5.1/512
6.2/634
5.9/609
6.9/713
6.6/682
9.0/887
8.8/869
0.4
0.5
124
127
94
96
76
77
68
68
53
54
0.4
0.5
100
102
76
77
61
62
54
55
42
43
0.4
0.5
83
84
63
64
51
52
45
45
35
36
0.6
664
874
1073
1215
1527
3.8/378
4.9/500
5.6/584
6.4/663
8.4/835
0.6
127
97
79
70
55
0.6
103
78
63
56
45
0.6
85
64
53
46
37
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