background image

(Supersedes PN400-2)

PN400-3

RST

161-049178-001

MAY, 1986

4

and

Installation, Operation

RENEWAL PARTS IDENTIFICATION

Type RST and RSTO 

Unitary Electric Immersion Heaters

© 2010 Chromalox, Inc.

Specifications – Table A

Tank

Heater

Amperes**

Adapter Box Dimensions (In.)

Holding

Approximate

Temperature

“B”

No.

Net Weight

Capacity

Dimensions

(°F)

kW

240V

480V

Model †

Height

Depth

Length

Dimension*

Tubes

(Lbs.)

175

15

37.0

18.5

RST (or) RSTO-21915

8

1

/

2

8

1

/

4

20

19’

2

560

8,000

8’ (Dia.)

225

20

49.0

24.5

RST (or) RSTO-21920

8

1

/

2

8

1

/

4

20

19’

2

560

Gal.

x

275

25

61.2

30.6

RST (or) RSTO-21925

8

1

/

2

8

1

/

4

20

19’

2

560

21’6”

325

30

73.0

36.5

RST (or) RSTO-51530

8

1

/

2

8

1

/

4

35

15’

5

1100

375

38

92.4

46.2

RST (or) RSTO-52038

8

1

/

2

8

1

/

4

35

19’6”

5

1300

10’6” (Dia.)

175

18

44.3

22.2

RST (or) RSTO-31518

8

1

/

2

8

1

/

4

25

15’

3

635

10,000

x

225

24

58.7

29.4

RST (or) RSTO-41524

8

1

/

2

8

1

/

4

30

15’

4

905

Gal.

15’6”

325

36

87.6

43.8

RST (or) RSTO-61536

8

1

/

2

8

1

/

4

40

15’

6

1270

375

45

109.2

54.6

RST (or) RSTO-81545

8

1

/

2

8

1

/

4

50

14’6”

8

1710

175

20

49.0

24.5

RST (or) RSTO-31720

8

1

/

2

8

1

/

4

25

17’

3

695

12,000

10’6” (Dia.)

225

26

63.5

31.7

RST (or) RSTO-41726

8

1

/

2

8

1

/

4

30

16’6”

4

925

Gal.

x

275

32

78.0

39.0

RST (or) RSTO-51732

8

1

/

2

8

1

/

4

35

16’6”

5

1135

18’6”

325

40

97.2

48.6

RST (or) RSTO-61740

8

1

/

2

8

1

/

4

40

17’

6

1440

375

48

116.4

58.2

RST (or) RSTO-71848

8

1

/

2

8

1

/

4

45

17’6”

7

1620

175

22

54.0

27.0

RST (or) RSTO-31922

8

1

/

2

8

1

/

4

25

18’8”

3

725

15,000

10’6” (Dia.)

225

30

73.0

36.5

RST (or) RSTO-41930

8

1

/

2

8

1

/

4

30

19’

4

1055

Gal.

x

275

36

87.6

43.8

RST (or) RSTO-51936

8

1

/

2

8

1

/

4

35

18’6”

5

1230

23’3”

325

45

109.2

54.6

RST (or) RSTO-61945

8

1

/

2

8

1

/

4

40

19’

6

1530

375

56

136.0

68.0

RST (or) RSTO-72156

8

1

/

2

8

1

/

4

45

20’6”

7

1830

175

24

58.7

29.4

RST (or) RSTO-32024

8

1

/

2

8

1

/

4

25

19’6”

3

755

20,000

10’6” (Dia.)

225

36

87.6

43.8

RST (or) RSTO-42336

8

1

/

2

8

1

/

4

30

23’

4

1205

Gal.

x

275

48

116.4

58.2

RST (or) RSTO-52548

8

1

/

2

8

1

/

4

35

25’

5

1605

30’10

1

/

2

325

60

145.2

72.6

RST (or) RSTO-62660

8

1

/

2

8

1

/

4

40

25’6”

6

1790

375

72

174.2

87.1

RST (or) RSTO-72672

8

1

/

2

8

1

/

4

45

26’

7

2260

*Heated length is four inches shorter than “B” dimension.
**All amperes based on 3-phase 60 cycle power.
† T suffix letter indicates 7 day 24 hour time clock, F suffix letter indicates flange mounting instead of adaptor box.

3” Schedule 40
Steel Pipe

Immersed Length or “B”
Dimension From End 
Of Adaptor Box To
End Of Tubes

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