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PKGP-PRC004-EN
Performance
Data
Table PD-25 — Air Temperature Rise Across Electric Heaters (Degrees C)
3400 M
kW
Stages
WSC060AD, T
7.5
2
8.3
2
9.0
2
10.9
2
11.3
1
12.1
2
12.5
1
13.0
2
13.5
1
14.4
2
16.0
2
16.9
2
17.2
2
18.8
2
20.2
2
22.6
2
25.0
2
26.9
2
33.9
2
37.5
2
40.4
2
Note:
For minimum design airflow, see performance table for each unit.
To calculate temp rise at differrent airflow, use following formula:
Temp. Rise (C
0
) across Elect Htr = (kW x 2985) / (M
Table PD-25a — Air Temperature Rise Across Electric Heaters (Degrees F)
2000 CFM
kW
Stages
WSC060AD, T
7.5
2
8.3
2
9.0
2
10.9
2
11.3
1
12.1
2
12.5
1
13.0
2
13.5
1
14.4
2
16.0
2
16.9
2
17.2
2
18.8
2
20.2
2
22.6
2
25.0
2
26.9
2
33.9
2
37.5
2
40.4
2
NOTE:
For minimum design airflow, see performance table for each unit.
To calculate temp rise at differrent airflow, use following formula:
Temp. Rise (F
0
) across Elect Htr = (kW x 3414) / ( 1.08 x CFM)
Table PD-26 — Electric Heater Temperature Rise Correction Factors
% Variation From Nominal Airflow – 20
Temperature Rise Multiplier
5 Ton
6 Ton
3
/H
4100 M
3
/H
WSC072AD, T
WSC090AD, T
6.6
—
7.3
—
7.9
—
9.6
—
—
8.3
10.6
—
—
9.1
11.4
—
—
9.9
12.6
—
14.0
—
—
12.4
15.1
—
—
13.8
—
14.8
—
16.5
—
18.3
—
19.7
—
—
—
—
—
—
3
/H)
5 Ton
6 Ton
2400 CFM
WSC072AD, T
WSC090AD, T
11.9
—
13.1
—
14.2
—
17.2
—
—
14.9
19.1
—
—
16.5
20.5
—
—
17.8
22.8
—
25.3
—
—
22.3
27.2
—
—
24.8
—
26.6
—
29.8
—
32.9
—
35.4
—
—
—
—
—
—
– 15
– 10
– 5
0
1.25
1.17
1.11
1.05
1
7 .5 Ton
10 Ton
5100 M
3
/H
6800 M
3
/H
WSC120AD, T
—
—
—
—
—
—
—
—
6.6
—
—
—
7.3
—
—
—
7.9
—
—
—
—
—
9.9
7.4
—
—
11.0
8.3
11.8
8.9
13.2
9.9
14.6
11.0
15.7
11.8
—
14.9
—
16.5
—
17.7
7 .5 Ton
10 Ton
3000 CFM
4000 CFM
WSC120AD, T
—
—
—
—
—
—
—
—
11.9
—
—
—
13.2
—
—
—
14.2
—
—
—
—
—
17.8
13.4
—
—
19.8
14.9
21.3
16.0
23.8
17.9
26.3
19.8
28.3
21.3
—
26.8
—
29.6
—
31.9
+ 5
+ 10
+ 15
+ 20
0.95
0.91
0.87
0.83
33
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