Model ISH Electric Steam Superheaters
(Model IWH Electric Circulation Heaters)
Dimensional Data
Components
Physical Data
Heater Configuration
Element Ratings
Model Number+
Vessel Diameter
# of Flanges
Max # of Elements
Element Number++
KW@480V (IWH)
KW@ Reduced Voltages (IAH/IOH/ISH)
Element Length
50wsi
67wsi
75wsi
12 wsi*
17wsi*
19wsi*
22wsi**
25wsi**
6_1
6
1
6
1
5.0
1.25
20"
6_2
6
2
12
2
10.0
2.5
36"
8_1
8
1
12
3
4.0
1.0
1.33
12"
8_2
8
2
24
4
5.0
1.25
1.67
14"
0_1
10
1
18
5
6.0
1.5
2.0
16"
0_2
10
2
48
6
6.7
1.67
2.23
20"
2_1
12
1
24
7
10.0
2.5
3.33
25"
2_2
12
2
48
8
12.0
3.0
4.0
33"
4_1
24
1
36
9
13.3
3.33
4.43
33"
4_2
14
2
72
0
Special Element
NOTE: Overall
length is equal to the element length (2x element length
for 2-flange models) plus 10". *Complete model
number requires heater type prefix element number
insertion, and heater rating and design pressure suffixes.
Example: Model ISH-862-0035-250ST represents a steam
superheater configured with an 8" tank, (21) 1.67 KW
elements operating at 17wsi, (2) element flanges, a total
rating fo 35KW, and designed for 250psi max. steam
pressure. **Max number of elements can be reduced in
increments of 3. *Series connection. **Wye
connection.
