IMMERSION - Flanged Immersion Heaters
Flanged Immersion Heater Applications
See Selection Guidelines below for your application.
- Hot Water Storage Tanks
- Warming Equipment
- Preheating All Grades of Oil
- Food Processing Equipment
- Cleaning and Rinsing Tanks
- Heat Transfer Systems
- Process Air Equipment
- Boiler Equipment
- Freeze Protection of Any Fluid
Flanged Immersion Application Selection
The selection of the proper Flanged Immersion Heater requires critical engineering
judgement. After determining the heat requirement (see the applications section
of this catalog), the proper selection of the flange material, heating element sheath
material and correct watt density is critical for long life of a heater. The following
table may be used as a guide to this selection along with the Technical Information
at the back of this catalog. Ultimate choice is determined by the knowledge of the
Process and engineering acumen of the plant engineer.
Heater application is influenced by the following parameters.
- The heated medium viscosity, specific heat density and corrosive
properties.
- Contaminants present in the medium.
- The heater sheath material corrosion resistant properties.
- Watt density of the heating element — the heat output per square
inch.
- Maximum sheath temperature — this is the recommended maximum
sheath temperature of the element material. It is not the operating temperature
of the heated medium (sheath temperature is dependent on items 1 thru 4).
Application Selection - Guidelines
Flanged Immersion Heaters — Selection Guidelines
FlangeSize Sheath Flange Heater Application (In.) Material Material Type Page
|
Clean Water
|
3
5
6
8
10
12
14
|
Copper
Copper
Copper
Copper
Copper
Copper
Copper
|
Steel
Steel
Steel
Steel
Steel
Steel
Steel
|
TM
TM
TM
TM
TM
TM
TM
|
B-92
B-92
B-93
B-93
B-93
B-93
B-93
|
Process Water
|
3
5
6
8
|
SS
SS
SS
SS
|
Steel
Steel
Steel
Steel
|
TMS
TMS
TMS
TMS
|
B-94
B-95
B-95
B-95
|
Solution Water
|
3
5
6
8
|
INCOLOY®
INCOLOY®
INCOLOY®
INCOLOY®
|
Steel
Steel
Steel
Steel
|
TMI
TMI
TMI
TMI
|
B-96
B-97
B-97
B-97
|
Mildly Corrosive Solution
|
3
5
6
8
|
SS
SS
SS
SS
|
Steel
Steel
Steel
Steel
|
TMS
TMS
TMS
TMS
|
B-98
B-99
B-99
B-99
|
Corrosive Solution & Gas
|
3
5
6
8
10
12
14
|
INCOLOY®
INCOLOY®
INCOLOY®
INCOLOY®
INCOLOY®
INCOLOY®
INCOLOY®
|
Steel
Steel
Steel
Steel
Steel
Steel
Steel
|
TMI
TMI
TMI
TMI
TMI
TMI
TMI
|
B-100
B-101
B-101
B-101
B-101
B-101
B-101
|
Severely Corrosive Solution
|
3
5
6
|
INCOLOY®
INCOLOY®
INCOLOY®
|
SS
SS
SS
|
TMIS
TMIS
TMIS
|
B-102
B-102
B-102
|
Demineralized or De-ionized Water
|
3
5
|
INCOLOY®
INCOLOY®
|
SS
SS
|
TMIS
TMIS
|
B-103
B-103
|
Boiler & Water
|
2-1/2 Sq.
2-1/2 Sq.
4-1/2 Sq.
|
Copper
INCOLOY®
Copper
|
Brass
Steel
Steel
|
TTSF
TTSF
WCFS
|
B-109
B-109
B-109
|
Light Weight Oil
|
3
5
6
8
10
12
14
|
Steel
Steel
Steel
Steel
Steel
Steel
Steel
|
Steel
Steel
Steel
Steel
Steel
Steel
Steel
|
TMO
TMO
TMO
TMO
TMO
TMO
TMO
|
B-104
B-104
B-105
B-105
B-105
B-105
B-105
|
Medium Weight Oil
|
3
5
6
|
Steel
Steel
Steel
|
Steel
Steel
Steel
|
TMO
TMO
TMO
|
B-106
B-106
B-106
|
Heavy Weight Oil
|
3
5
|
Steel
Steel
|
Steel
Steel
|
TMO
TMO
|
B-108
B-108
|
Food Equipment
|
3-1/4 Dia.
|
Copper
Copper
|
Brass
Brass
|
TTUH
TTUH-CO
|
B-110
B-111
|
Flanged Immersion Heaters Technical & Application Data
Description
These thru-the-side immersion heaters utilize standard pipe flanges ranging from
3 to 14" nominal pipe diameter to support high tank pressures of superheated
steam, compressed gases or liquids. They are installed through a matching companion
flange (obtainable from local industrial supply houses) to the tank wall. A wide
selection of Watt densities, heating outputs and flange sizes and ratings make this
an excellent heater for all tanks, vats or irregularly shaped <br />els.
Features — Stock Units
Element
- Materials — Copper, Steel , 304 stainless steel, INCOLOY
®
- Number Elements in Flanges — 3, 6, 12, 18, 27, 36 and 45
- Element Diameter — 0.475"
- Watt Density — 6.5, 15, 23, 45 and 75 W/In 2
Flange
- Material — Carbon Steel, stainless steel
- Rating — 150 lb. pressure class per ANSI B16.5
- Sizes — 3, 5, 6, 8, 10, 12 and 14", 150 lb.
Process Control Thermowell
- Materials — Copper, carbon steel, stainless steel, INCOLOY
®
- 1/2" diameter
Special Features
- Kilowatt Ratings — 500 kW and above available
Element
- Materials — 316, 321, 347 stainless steel,INCONEL ®
and more
Flange
- Materials — 316, 321, 347 stainless steel, INCONEL
® , INCOLOY ® and more
- Rating — 300, 400, 600, 900, 1,500 and 2,500 lb. pressure
class
- Size — 16, 18" and larger
Optional Features
ASME Section I, IV and VIII designed and certified
Baffles to distribute flow on elements
Passivation of stainless steel
Immersion Lengths up to 240 inches
Stand-off Terminal Enclosures to isolate terminal housing from
fl ange in high temperature applications
Stock Status & Availability
S — Stocked in finished form
AS — Assembly Stock. Items put together using major stocked
subassemblies requiring three day shipping lead time
NS — Non Stock (made to order). Contact your Local Chromalox
Sales
Terminal Enclosures
Type E1 General Purpose, sheet metal (NEMA 1) painted with red
enamel
Type E2 Combination Moisture Resistant, Explosion Resistant
Type E3 Explosion Resistant
Type E4 Moisture Resistant
Type E2 and E3 Explosion Resistant enclosures involve the use of
a wiring enclosures for use in hazardous location conditions:
- Class I Groups B, C & D, Division 1 & 2
- Class II Groups E, F & G, Division 1 & 2
Safe operation of heaters equipped with these enclosures depends on employment of
electrical wiring meeting the National Electrical Code for hazardous locations and
limiting maximum operating temperatures (including temperatures on outside of vessel,
piping, flanges, screw plugs, enclosures and other heat conducting parts) as dictated
by flammable liquids, vapors or gases present. Approved pressure and/or temperature
limiting controls must be used to assure safe operation in the event of a system
malfuntion.
Temperature Controls
- A thermostat protective well is standard on most models. This
well is installed through the flange, parallel with the heating elements. An AR
type on-off mechanical control can be externally mounted to the heater with the
capillary bulb installed in this well (order separately — see Controls section
for details).
- A contactor is needed when the line voltage and/or current exceeds
the thermostat rating.
- Other types of controls and sensors are available where a high
degree of accuracy or a more versatile control scheme is required. Electronic controls
and complete control panels are easily installed. See the Controls section for details.
Corrosion Policy
Chromalox cannot warrant any electric immersion heater against failure by sheath
corrosion if such failure is the result of operating conditions beyond the control
of the heater manufacturer. It is the responsibility of the purchaser to make the
ultimate choice of sheath material based on their knowledge of the chemical composition
of the corrosive solution, character of materials entering the solution, and controls.
Flanged Immersion Heaters Terminal Enclosures
Dimensions (Inches) for Flanged Immersion Heaters
Specifications Flanged Immersion Heaters
Nom. Pile Size
|
No. Elem.
|
150 Lb. Rated Flange Dimensions (In.)
|
Terminal Enclosure2
|
General Purpose E1
|
Explosion Resistant E3
|
Moisture Resistant E4
|
C
|
D
|
E
|
Dia. F
|
G No. Holes
|
H Min.
Hole Dia.
Reqd.1
|
J
|
K
|
J
|
K
|
J
|
K
|
3
5
6
|
3
6
12
|
15/16
15/16
1
|
6
8-1/2
9-1/2
|
7-1/2
10
11
|
3/4
7/8
7/8
|
4
8
8
|
2-3/4
5
6
|
3-1/2
3-1/2
5-3/8
|
4-9/16
6-11/16
7-11/16
|
5-3/8
6-15/16
8-5/8
|
4-1/4
5-3/4
8
|
5-3/8
3-7/16
5-11/32
|
4-1/4
7-1/4
8
|
8
10
12
14
|
18
27
36
45
|
1-1/8
1-3/16
1-1/4
1-3/8
|
11-3/4
14-1/4
17
18-3/4
|
13-1/2
16
19
21
|
7/8
1
1
1-1/8
|
8
12
12
12
|
7-15/16
9-3/4
11-3/4
12-3/4
|
5-3/8
6-9/16
6-9/16
6-9/16
|
9-13/16
11-3/16
13-3/16
15-3/16
|
7-9/16
9-1/8
7-15/16
9-1/8
|
10
10-1/2
12-3/4
14
|
5-11/16
5-11/16
6-1/4
6-5/16
|
10
12
12-3/4
14
|
1. Bundle diameters are suitable for insertion into standard schedule 40 pipe. If
higher schedule pipe is used, please specify.
2. The “N dimension” (referred to as the conduit opening on E1 enclosures,
and the NPT opening for E2/E3/E4 enclosures) varies with heater size, kilowatt rating
and voltage. The number of conduit openings corresponds with the number of circuits
supplied. Refer to product offering page for specific “N” dimension.
|
Flanged Immersion Heaters Process Temperature and Overtemperature
Controls
Temperature Control — Mechanical Devices
An integral on-off Process temperature control thermostat can be factory installed
into the housing of the heater. The sensing bulb of the thermostat is inserted into
a thermowell in the center of the heating bundle. AR type mechanical controls (see
Mechanical Devices
Option number
|
thermostat flange
|
TI
|
0 - 100°F
|
T2
|
60 - 250°F
|
T3
|
200 - 550°F
|
Notes
A. The controls are for pilot duty only and must be connected to a remote mounted
magnetic contactor.
B. For explosion resistant heaters, an integral thermostat can only be specified
on a 3, 5 and 6" flange immersion heater.
Temperature Control — Electronic Devices
A Process control thermocouple can be factory installed into a thermowell in the
center of the heating bundle for Process control. This thermocouple must be connected
Overtemperature Protection — Electronic Devices
A thermocouple can be attached to the heating element sheath to switch the heater
off in the event of a high temperature condition. This thermocouple must be connected
to a remote mounted electronic high limit temperature controller.
Mechanical Device Temperature Control (T1, T2, or T3)
|
Process Control Thermocouple (C46 or C47)
|
Overheat Protection Thermocouple (C36 or C37)
|
Electronic Devices
Option Termo- Enclosure Number couple Type Description
|
Temperature Control
|
C40 C41
|
J
K
|
E1
|
Process thermocouple in thermowell. Connect to remote mounted control (not included).1
|
C42 C43
|
J
K
|
E2/E3
|
Process thermocouple in thermowell without separate thermocouple termination box.
Connect to remote mounted control (not included).1
|
C44 C45
|
J
K
|
E2/E3
|
Process thermocouple in thermowell with separate thermocouple termination box. Connect
to remote mounted control (not included).1
|
C46 C47
|
J
K
|
E4
|
Process thermocouple in thermowell with separate thermocouple termination box. Connect
to remote mounted control (not included).1
|
Overtemperature Protection
|
C30
C31
|
J
K
|
E1
|
Overheat protection thermocouple welded onto heater sheath. Connect to remote mounted
control (not included).1
|
C32
C33
|
J
K
|
E2/E3
|
Overheat protection thermocouple welded onto heater sheath without separate thermocouple
termination box. Connect to remote mounted control (not included).1
|
C34
C35
|
J
K
|
E2/E3
|
Overheat protection thermocouple welded onto heater sheath with separate thermo-couple
termination box. Connect to remote mounted control (not included).1
|
C36
C37
|
J
K
|
E4
|
Overheat protection thermocouple welded onto heater sheath with separate thermo-couple
termination box. Connect to remote mounted control (not included).1
|
1. See the Controls section for information on electronic or remote mounted controls.
Other Note — To order, add the option number to the end of the heater model
number.
|
Download the Flanged Immersion Heaters Selection Guidelines