Trane AM4A0A30S21SA Series User Manual

CLCH-SVX07C-EN 11 5
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Constant Factor K
The constant factor K is unique for each fan and is primarily a function of the area and the geometry
of the fan inlet. Pre-engineered factors are available from the factory for fan types where the airflow
measurement system is available. See Table 32 .
Table 32. Constant K Factors
Fan Size (inches)/Type Fan Class Fan Name K-Factor
9 BC Class I 9 BA 935.0
9 BC Class II 9 BB 868.2
10 BC Class I 10 BA 1072.5
10 BC Class II 10 BB 1072.5
12 AF Class I 12 AA 2337.5
12 AF Class II 12 AB 2237.3
15 AF Class I 15 AA 3873.6
15 AF Class II 15 AB 3873.6
18 AF Class I 18 AA 4675.0
18 AF Class II 18 AB 4675.0
20 AF Class I 20 AA 5843.7
20 AF Class II 20 AB 5119.9
22 AF Class I 22 AA 7513.4
22 AF Class II 22 AB 6624.1
25 AF Class I 25 AA 9683.9
25 AF Class II 25 AB 8891.1
28 AF Class I 28 AA 12856.2
28 AF Class II 28 AB 11795.0
32 AF Class I 32 AA 16295.6
32 AF Class II 32 AB 16295.6
36 AF Class I 36 AA 19701.7
36 AF Class II 36 AB 19367.8
40 AF
1
Class I 40 AA 23374.9
40 AF
2
Class II 40 AA 25378.4
40 AF
1
Class I 40 AB 22974.2
40 AF
2
Class II 40 AB 25044.5
44 AF Class I 44 AA 30113.0
44 AF Class II 44 AA 30113.0
49 AF Class I 49 AB 37470.0
49 AF Class II 49 AB 37470.0
20 FC Class I 20 FA 7300.0
20 FC Class II 20 FB 7203.9
22 FC Class I 22 FA 9081.9
22 FC Class II 22 FB 8793.1
25 FC Class I 25 FA 12030.0
25 FC Class II 25 FB 11700.0
28 FC Class I 28 FA 14450.0
28 FC Class II 28 FB 14036.0
Note:
1
to be used for fan rpm < 700 or cfm < 25,500.
2
To be used for fan rpm > 700 or cfm > 25,500

Trane AM4A0A30S21SA Series Specifications

General

Brand	Trane
Model	AM4A0A30S21SA Series
Category	Air Handlers
Language	English