179
600V, VAV, Open Elements, Standard Controls with Full SCR
03W
1,500
1.33
1
19
14.3
23
1
3
39.8
—
—
—
—
—
—
—
06W
3,000
2.45
1
37
15.1
45
1
3
38.8
38
47
19
57
2
3
49.3
07T
3,500
3.56
1
37
10.4
45
1
3
33.3
38
70
20
84
2
6
62.9
08W
4,000
3.52
1
68
19.3
82
2
6
53.5
—
—
—
—
—
—
—
09T
4,500
3.81
1
74
19.4
89
2
6
51.7
—
—
—
—
—
—
—
10W
5,000
4.77
1
74
15.5
89
2
6
46.6
—
—
—
—
—
—
—
11T
5,500
5.13
1
74
14.4
89
2
6
42.3
—
—
—
—
—
—
—
12T
6,000
5.69
1
74
13.0
89
2
6
38.8
—
—
—
—
—
—
—
12W
6,000
5.97
2
74
12.4
89
2
6
38.8
—
—
—
—
—
—
—
14W
7,000
6.58
2
74
11.3
89
2
6
33.3
—
—
—
—
—
—
—
16T
8,000
7.30
1
74
10.1
89
2
6
29.1
—
—
—
—
—
—
—
17W
8,500
8.06
2
74
9.2
89
2
6
27.4
—
—
—
—
—
—
—
18T
9,000
8.33
1
74
8.9
89
2
6
25.9
—
—
—
—
—
—
—
21W
10,500
10.20
2
74
7.3
89
2
6
22.2
—
—
—
—
—
—
—
22T
11,000
10.59
2
74
7.0
89
2
6
21.2
—
—
—
—
—
—
—
25T
12,500
11.73
2
74
6.3
89
2
6
18.6
—
—
—
—
—
—
—
25W
12,500
11.36
2
74
6.5
89
2
6
18.6
—
—
—
—
—
—
—
30T
15,000
14.52
2
74
5.1
89
2
6
15.5
—
—
—
—
—
—
—
30W
15,000
14.34
2
74
5.2
89
2
6
15.5
—
—
—
—
—
—
—
35T
17,500
17.31
2
74
4.3
89
2
6
13.3
—
—
—
—
—
—
—
36W
18,000
18.67
3
74
4.0
89
2
6
12.9
—
—
—
—
—
—
—
37T
18,500
18.12
3
74
4.1
89
2
6
12.6
—
—
—
—
—
—
—
40W
20,000
20.57
3
74
3.6
89
2
6
11.6
—
—
—
—
—
—
—
42T
21,000
20.56
3
74
3.6
89
2
6
11.1
—
—
—
—
—
—
—
50W
25,000
25.83
3
74
2.9
89
2
6
9.3
—
—
—
—
—
—
—
51T
25,500
25.00
4
74
3.0
89
2
6
9.1
—
—
—
—
—
—
—
58T
29,000
28.43
4
74
2.6
89
2
6
8.0
—
—
—
—
—
—
—
61W
30,500
31.01
4
74
2.4
89
2
6
7.6
—
—
—
—
—
—
—
72W
36,000
35.86
5
74
2.1
89
2
6
6.5
—
—
—
—
—
—
—
85W
42,500
42.50
5
74
1.7
89
2
6
5.5
—
—
—
—
—
—
—
96W
48,000
47.99
5
74
1.5
89
2
6
4.8
—
—
—
—
—
—
—
110W
55,000
55.10
5
74
1.3
89
2
6
4.2
—
—
—
—
—
—
—
600V, VAV, Open Elements, Standard Controls with Vernier SCR
11T
5,500
5.13
75 130
25.3
157
4
6
74.4
—
—
—
—
—
—
—
12T
6,000
5.69
75 130
22.8
157
4
6
68.2
—
—
—
—
—
—
—
12W
6,000
5.97
75 130
21.8
157
4
6
68.2
—
—
—
—
—
—
—
14W
7,000
6.58
75 149
22.7
179
4
6
67.0
—
—
—
—
—
—
—
16T
8,000
7.30
75 150
20.6
181
4
6
59.0
—
—
—
—
—
—
—
17W
8,500
8.06
75 149
18.5
179
4
6
55.1
—
—
—
—
—
—
—
18T
9,000
8.33
75 170
20.4
205
5
6
59.4
—
—
—
—
—
—
—
21W
10,500
10.20
75 112
11.0
135
3
6
33.6
113 149
15
179
4
6
44.6
22T
11,000
10.59
75 112
10.6
135
3
6
32.0
113 220
21
265
6
6
62.9
25T
12,500
11.73
75 112
9.6
135
3
6
28.2
113 224
19
270
6
6
56.4
25W
12,500
11.36
75 112
9.9
135
3
6
28.2
113 149
13
179
4
6
37.5
30T
15,000
14.52
75 112
7.7
135
3
6
23.5
113 224
15
270
6
6
47.0
30W
15,000
14.34
75 112
7.8
135
3
6
23.5
113 149
10
179
4
6
31.2
35T
17,500
17.31
75 149
8.6
179
4
6
26.8
150 224
13
270
6
6
40.3
36W
18,000
18.67
75 149
8.0
179
4
6
26.0
150 224
12
270
6
6
39.1
37T
18,500
18.12
75 149
8.2
179
4
6
25.3
150 299
17
360
8
6
50.8
40W
20,000
20.57
75 149
7.2
179
4
6
23.4
150 224
11
270
6
6
35.2
42T
21,000
20.56
75 149
7.2
179
4
6
22.3
150 300
15
361
8
6
44.9
50W
25,000
25.83
75 187
7.2
225
5
6
23.5
188 224
9
270
6
6
28.2
51T
25,500
25.00
75 187
7.5
225
5
6
23.1
188 374
15
450
10
6
46.1
58T
29,000
28.43
75 224
7.9
270
6
6
24.3
225 374
13
450
10
6
40.6
61W
30,500
31.01
75 224
7.2
270
6
6
23.1
225 374
12
450
10
6
38.6
72W
36,000
35.86
75 261
7.3
314
7
6
22.8
262 374
10
450
10
6
32.7
85W
42,500
42.50
75 261
6.1
314
7
6
19.3
262 374
9
450
10
6
27.7
96W
48,000
47.99
75 299
6.2
360
8
6
19.6
300 374
8
450
10
6
24.5
110W
55,000
55.10
75 299
5.4
360
8
6
17.1
300 374
7
450
10
6
21.4
LEGEND
AHRI — Air-Conditioning, Heating and Refrigeration Institute
FLA — Full Load Amps
MCA — Minimum Circuit Amps
SCR — Silicon Control Rectifier
NOTES:
1.
Standard control steps are listed under the Control Step heading. “Free” additional steps of control are
optionally available when the number of sub-circuits exceeds the standard number of control steps.
2. MCA = 1.25 x FLA; for proper wire sizing, refer to Table 310-16 of the NEC (National Electrical Code).
3. Sub-circuits are internal heater circuits of 48 amps or less.
4. Electric heat performance is not within the scope of AHRI standard 430 certification.
5. To avoid damage due to overheating, minimum face velocity cannot fall bellow 350 fpm.
6. Heaters up to (and including) 60 kW have 3 control steps; beyond 60 k, 6 steps are standard.
7. Heater kW offering is controlled by
AHU
Builder®
program. This table is for reference only.
Table 40 —
Electric Heater Data (cont)
UNIT
SIZE AIRFLOW
FACE
AREA
LOW kW EH
HIGH kW EH
MIN
kW
MAX
kW
kW /
SQ FT
MAX
AMPS
SUB CIRCUITS
AT MAX AMPS
CONTROL
CIRCUITS
AT MAX kW
(SEE NOTE 1)
TEMP RISE
AT 100%
AIRFLOW
MIN
kW
MAX
kW
kW /
SQ FT
MAX
AMPS
SUB CIRCUITS
AT MAX AMPS
CONTROL
CIRCUITS
AT MAX kW
(SEE NOTE 1)
TEMP RISE
AT 100%
AIRFLOW