Series DM Tubular Air Duct Heaters
Series DM Tubular Air Duct Heaters feature Incoloy® 840 elements, stainless steel element support, stainless steel support rods, painted flange, NEMA 1 terminal enclosure, and replaceable element design.
Moderate temperature (750°F max.)
Standard Features
20 watts per sq. inch on sheath
Incoloy 840 elements – 1700°F max. sheath temperature
Stainless steel element support
Stainless steel support rods
Painted steel flange
NEMA 1 terminal enclosure
Replaceable element design
Recompacted bends
1″ insulation in terminal housing
Recommended Operating Conditions
|
Recommended Operating Conditions
|
|
|
Air Speed
(ft. per second) |
Maximum
Operating Temp. |
|
6
|
650°F
|
|
9
|
700°F
|
|
16
|
750°F
|
Volts 3-Phase
|
Volts
3-Phase |
#
Circuits |
KW
|
A
|
B
|
C
|
D
|
E
|
G
|
Wt.
(lbs.) |
#
Elems. |
Catalog #
|
|
240
480 |
1
1 |
6
|
27 1⁄8
|
20 3⁄8
|
3 5⁄8
|
5 5⁄8
|
10
|
2 1⁄2
|
20
|
6
|
DM6-6-3
DM6-6-5 |
|
240
480 |
1
1 |
12
|
27 1⁄8
|
20 3⁄8
|
5 5⁄8
|
7 5⁄8
|
10
|
3 1⁄2
|
26
|
12
|
DM12-12-3
DM12-12-5 |
|
240
480 |
1
1 |
18
|
27 1⁄8
|
20 3⁄8
|
7 5⁄8
|
9 5⁄8
|
12
|
3
|
35
|
18
|
DM18-18-3
DM18-18-5 |
|
240
480 |
2
1 |
24
|
27 1⁄8
|
20 3⁄8
|
9 5⁄8
|
11 5⁄8
|
14
|
2 3⁄4
|
42
|
24
|
DM24-24-3
DM24-24-5 |
|
240
480 |
2
1 |
30
|
27 1⁄8
|
20 3⁄8
|
11 5⁄8
|
13 5⁄8
|
14
|
3 1⁄4
|
50
|
30
|
DM30-30-3
DM30-30-5 |
|
240
480 |
2
1 |
36
|
27 1⁄8
|
20 3⁄8
|
13 5⁄8
|
15 5⁄8
|
14
|
3 3⁄4
|
60
|
36
|
DM36-36-3
DM36-36-5 |
|
240
480 |
2
1 |
42
|
27 1⁄8
|
20 3⁄8
|
15 5⁄8
|
17 5⁄8
|
14
|
4 1⁄4
|
70
|
42
|
DM42-42-3
DM42-42-5 |
|
240
480 |
4
2 |
48
|
27 1⁄8
|
20 3⁄8
|
17 5⁄8
|
19 5⁄8
|
14
|
4 3⁄4
|
80
|
48
|
DM48-48-3
DM48-48-5 |
|
240
480 |
3
3 |
54
|
27 1⁄8
|
20 3⁄8
|
19 5⁄8
|
21 5⁄8
|
14
|
5 1⁄4
|
90
|
54
|
DM54-54-3
DM54-54-5 |
|
240
480 |
4
2 |
60
|
27 1⁄8
|
20 3⁄8
|
21 5⁄8
|
23 5⁄8
|
14
|
5 3⁄4
|
97
|
60
|
DM60-60-3
DM60-60-5 |