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Design Guide
Engineering Design Guide
Auxiliary Heat Ratings
Auxiliary
Electric
Heat
Model
HGM4A
HGM5A
HGM8A
HGM10A
HGM12A
HGL10A
HGL15A
HGL20A
Black area denotes compatibility
Note: Horizontal units rated for zero clearance unit and 1" clearance for the rst three feet of duct,
Vertical units rated for zero clearance for both unit and duct.
Auxiliary Electric heaters are mounted externally
Auxiliary Heat Electrical Data
Auxiliary Electric
Heat Model
HGM4A
HGM5A
HGM8A
HGM10A
HGL10A
HGM12A
HGL15A
HGL20A
All heaters rated single phase 208-240V 60Hz
All models 12kW or larger feature internal circuit breakers
HEV-HEH SEriES
HEV/H Models
kW Rating
030-
048-
024
240V
208V
042
060
3.8
2.9
4.8
3.6
7.6
5.7
9.6
7.2
11.4
8.6
9.6
7.2
14.4
10.8
19.2
14.4
Heater Amps
Supply
Circuit
240V
Single
15.8
Single
20.0
Single
31.7
Single
40.0
Single
40.0
Single
47.5
Dual - L1/L2
31.7
Dual - L3/L4
15.8
Single
60.0
Dual - L1/L3
40.0
Dual - L2/L4
20.0
Single
80.0
Dual - L1/L3
40.0
Dual - L2/L4
40.0
HEV/H SERIES
Btuh Rating
Minimum
CFM
240V
208V
Required
13000
9900
500
16300 12300
500
25900 19400
650
32700 24600
650
38900 29200
750
32700 24600
1300
49100 36900
1350
65500 49200
1350
Minimum Circuit Amps
208V
240V
208V
14.0
19.8
17.1
17.3
25.0
21.6
27.5
39.6
34.4
34.7
50.0
43.4
34.7
50.0
43.4
41.2
59.4
51.5
27.5
39.6
34.4
13.7
19.8
17.1
52.0
75.0
65.0
34.7
50.0
43.4
17.3
25.0
21.6
69.3
100.0
86.6
34.7
50.0
43.4
34.7
50.0
43.4
All Fuses UL Class K general purpose
32
Heat Controller
Maximum Fuse
240V
208V
20
20
25
25
40
35
50
45
50
45
60
60
40
35
20
20
80
70
50
45
25
25
100
90
50
45
50
45
Heat Contro
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