Chromalox Electric Heater PN403 1 User Manual

®
Chromalox  
SERVICE REFERENCE  
Installation, Operation  
DIVISION  
SALES  
4
SECTION LTFX  
(Supersedes PN403)  
and  
REFERENCE  
PN403-1  
161-049178-101  
RENEWAL PARTS IDENTIFICATION  
DATE  
SEPTEMBER, 2009  
Type LTFX  
Unitary Electric Immersion Heaters  
Specifications — E4 Moisture Resistant Housing  
Matching Control Panel  
PCN Model  
Immersion ANSI Flange  
Number  
of Tubes  
Tube  
Diameter  
Watt Density  
(Outside)  
Heater Model  
kW  
Volts Phase Circuits Length (In.)  
Size  
LTFX-125-004E4  
LTFX-128-008E4  
LTFX-1212-012E4  
LTFX-2212-024E4  
LTFX-3212-036E4  
LTFX-2325-060E4  
LTFX-3325-090E4  
LTFX-4325-120E4 120  
LTFX-6325-180E4 180  
LTFX-8325-240E4 240  
4
8
480  
480  
480  
480  
480  
480  
480  
480  
480  
480  
3
3
3
3
3
3
3
3
3
3
1
1
1
1
1
1
3
2
3
4
60  
96  
4" - 150#  
4" - 150#  
4" - 150#  
6" - 150#  
6" - 150#  
8" - 150#  
10" - 150#  
10" - 150#  
12" - 150#  
14" - 150#  
1
1
1
2
3
2
3
4
6
8
2"  
2"  
2"  
2"  
2"  
3"  
3"  
3"  
3"  
3"  
10  
12  
12  
12  
12  
9
9
9
9
9
328858 4468-30211  
328858 4468-30211  
328858 4468-30211  
328858 4468-30211  
328890 4468-30211  
329920 4468-60211  
12  
24  
36  
60  
90  
144  
144  
144  
300  
300  
300  
300  
300  
N/A  
N/A  
N/A  
N/A  
4468-90211  
4432-348-51100  
4432-348-51100  
4432-348-51100  
Specifications — E2 Explosion/Moisture Resistant Housing  
Matching Control Panel  
PCN Model  
Immersion ANSI Flange  
Number  
of Tubes  
Tube  
Diameter  
Watt Density  
(Outside)  
Heater Model  
kW Volts Phase Circuits Length (In.)  
Size  
LTFX-125-004E2  
LTFX-128-008E2  
LTFX-1212-012E2  
LTFX-3210-024E2  
LTFX-3215-036E2  
LTFX-3225-060E2  
LTFX-4225-090E2  
LTFX-8215-120E2 120  
LTFX-9220-180E2 180  
LTFX-12225-240E2 240  
4
8
480  
480  
480  
480  
480  
480  
480  
480  
480  
480  
3
3
3
3
3
3
3
3
3
3
1
1
1
1
1
1
2
2
3
4
60  
96  
4" - 150#  
4" - 150#  
4" - 150#  
8" - 150#  
8" - 150#  
8" - 150#  
10" - 150#  
12" - 150#  
14" - 150#  
14" - 150#  
1
1
1
3
3
3
4
8
9
2"  
2"  
2"  
2"  
2"  
2"  
2"  
2"  
2"  
2"  
10  
12  
12  
9
9
9
10  
12  
11  
9
Note: Explosion Resistant  
Control Panels are available.  
However, locating the  
control panel outside the  
hazardous location may offer  
significant cost savings.  
Please refer to section 'H' of  
the catalog for available  
Panel options.  
12  
24  
36  
60  
90  
144  
120  
180  
300  
300  
180  
240  
300  
12  
Note: For horizontal mount only.  
© 2010 Chromalox, Inc.  
 
WIRING (cont’d.)  
Wiring Entrance Locations - Moisure Resistant Housing Only  
(E4 Option)  
The Moisture Resistant (E4) Housing offers several conve-  
including temperatures on the outside of the vessel, piping,  
flanges, screw plugs, enclosures and other heat conducting parts be  
limited. The flammable liquids, vapors or gases present determine  
the maximum surface temperature permitted in any hazardous  
location. The end user or purchaser of the electric heating equip-  
ment is responsible for determining the proper classification of an  
area and for providing Chromalox with hazardous area specifica-  
tions and requirements for proper equipment design. (NEC and  
IEC provide guidelines for evaluating and classifying hazardous  
locations.)  
nient options for conduit wiring & location. The housing is  
equipped with two removable service entrance plates for installa-  
tion of wiring. Any or all of the six sides can be used for wiring  
locations. Refer to exploded view drawing. The housing can also  
be rotated (by removal from flange) to allow for more position  
possibilities. To install service entrance holes, simply remove the  
side Allen screws and use the centering depression to drill the  
appropriate size hole. Reinstall the gasket(s), if applicable, and  
service entrance plates by tightening the Allen head screws to 4-5  
in-lbs. The 'Octobox' style of housing can be removed for ease of  
access to element bussing or to better locate the power conduit(s)  
entry point. To accomplish, simply remove the Allen-head screws  
on the outside of the housing. When reinstalling, be sure to prop-  
erly align gasket, if applicable, and tighten to 40-50 in-lbs.  
Tip for Reinstalling Gaskets:  
An approved liquid level control or overtemperature  
control must be installed to deenergize the heater if  
the liquid level drops below the top of the heater.  
Table A – E4 Wiring Information  
Heater  
kW  
Volts  
Phase  
Total Amps  
Circuits  
Place Allen Head screws through metal covers and gentle  
push gasket hole over the threaded screw. This will allow the gas-  
ket to stay in place while tightening the cover.  
LTFX-125-004E4  
LTFX-128-008E4  
LTFX-1212-012E4  
LTFX-2212-024E4  
LTFX-3212-036E4  
LTFX-2325-060E4  
LTFX-3325-090E4  
LTFX-4325-120E4  
LTFX-6325-180E4  
LTFX-8325-240E4  
4
8
480  
480  
480  
480  
480  
480  
480  
480  
480  
480  
3
3
3
3
3
3
3
3
3
3
4.8  
9.6  
1
1
1
1
1
1
3
2
3
4
12  
14.5  
24  
28.9  
36  
43.4  
60  
72.3  
90  
108.4  
144.5  
216.8  
289.0  
120  
180  
240  
Table B – E2 Wiring Information  
Heater  
kW  
Volts  
Phase  
Total Amps  
Circuits  
LTFX-125-004E2  
LTFX-128-008E2  
LTFX-1212-012E2  
LTFX-3210-024E2  
LTFX-3215-036E2  
LTFX-3225-060E2  
LTFX-4225-090E2  
LTFX-8215-120E2  
LTFX-9220-180E2  
4
8
480  
480  
480  
480  
480  
480  
480  
480  
480  
480  
3
3
3
3
3
3
3
3
3
3
4.8  
9.6  
1
1
1
1
1
1
2
2
3
4
12  
24  
36  
60  
90  
120  
180  
14.5  
Wiring Entrance Locations - Explosion Resistant Housing  
Only (E2 Option)  
28.9  
The Explosion Resistant (E2) Housing features dedicated  
conduit connection sizes and locations for NPT installation of con-  
duit. Wiring installation must be in accordance with Hazardous  
Area requirements. The use of EYS seals or rigid conduit may be  
required. Please consult with the local inspection authority.  
Maximum Temperatures  
43.4  
72.3  
108.4  
144.5  
216.8  
289.0  
Safe operation in a hazardous location requires the maximum  
operating temperatures of all exposed surfaces of the heater  
LTFX-12225-240E2 240  
OPERATION  
ards, permanent heater damage, or cause heater failure and there-  
fore should be avoided.  
For initial operation and tuning the control scheme:  
1. Turn the master circuit breaker off and open the control box door.  
2. Set the indicating temperature control at the desired temperature  
and the over-temperature cutout at 50°F above this temperature.  
3. Interlock the liquid level control with the cutout device.  
4. Close the control box door and turn the circuit breaker on. To ener-  
gize the heater circuits, turn the on-off selector switch to the “on”  
position.  
FIRE HAZARD. To avoid possible damage to the  
heater, do not energize until the tank is filled with  
fluid. Recommended fluid level is 2” above the heater  
tube or pipe.  
1. Do not operate heaters at voltages in excess of that stamped on the  
heater, since excess voltage will shorten heater life.  
2. Heaters should not be operated in environments with factors that  
can destroy the electrical insulating characteristics of the ceramic  
insulators. Foreign contaminants can create leakage (shock) haz-  
 
MAINTENANCE  
and the ceramic insulators do not contact oil or any other liquid foreign  
matter. NOTE: Chromalox cannot be responsible for failures or dam-  
age caused by contamination on the ceramic insulators.  
ELECTRIC SHOCK HAZARD. Disconnect all power  
before installing or servicing heater. Failure to do  
so could result in personal injury or property dam-  
age. Heater must be installed or serviced by a  
qualified person in accordance with the National  
Electrical Code, NFPA 70.  
4. Installation is the reverse of the above.  
Element Replacement - Hazardous Locations, Explosion Resistant  
Housing Only (E2 option)  
1. To remove the OCE heating assembly, first turn the circuit breaker to  
the off position.  
2. Next remove the housing lid, element wiring, and 5/16” bolting around  
the element flamepath module. If needed, (2) 1/4-20x2” bolts may be  
used to break loose the module from the flange. Turn bolts evenly until  
module is free. The flamepath module will be re-used, so disconnected  
the heating element from the module pins. Now pull the element  
assembly out of the heating tube. NOTE: OCE elements should only be  
bent in a vertical plane with ground strap on the bottom.  
3. When removing the heating elements, make certain that the terminals  
and the ceramic insulators do not contact oil or any other liquid foreign  
matter. Note: Chromalox cannot be responsible for failures or damage  
caused by contamination on the ceramic insulators.  
4. Inspect the element assembly flange and mating surface for any debris,  
oils, or contamination. NOTE: Surfaces must be in suitable condition  
to ensure proper hazardous rating.  
5. Connect the new element to the flamepath module and slide into tube.  
Flamepath module bolting must be tightened to XXX ft. lbs. of torque.  
6. Reattach element wiring. When reinstalling housing lid, be sure to prop-  
erly align gasket, and tighten housing bolts to 40-50 in-lbs.  
1. Make certain both the terminals and the ceramic insulators are free  
from contact with oil, liquid, or other foreign matter.  
NOTE: Chromalox cannot be responsible for failures or damage  
caused by contamination on the ceramic insulators. Make certain the  
heaters are not exposed to contaminants.  
2. Check electrical connections at heater terminals and tighten if neces-  
sary. This will help avoid hot terminals which may destroy wire insu-  
lation or heater terminals  
3. Check overheat operation to assure heater protection.  
Element Replacement - Moisture Resistant Housing Only  
(E4 Option)  
1. To remove the OCE heating elements, first turn the circuit breaker to  
the off position.  
2. Next remove the housing lid, element wiring and the element mount-  
ing screw. Now pull the element straight out of the heating tube.  
NOTE: OCE elements should only be bent in a vertical plane with  
ground strap on the bottom.  
3. When removing the heating elements, make certain that the terminals  
TYPE LTFX RENEWAL PARTS IDENTIFICATION  
Table C – E4 Housing Renewal Parts Identification  
Heater  
Model  
Immersion  
Volts Phase Length (In.)  
ANSI  
Number  
of Tubes  
Tube  
OCE  
Replacement  
kW  
4
8
Flange Size  
Diameter  
Element No.  
OCE Model No.  
LTFX-125-004E4  
LTFX-128-008E4  
LTFX-1212-012E4  
LTFX-2212-024E4  
LTFX-3212-036E4  
LTFX-2325-060E4  
LTFX-3325-090E4  
LTFX-4325-120E4  
LTFX-6325-180E4  
LTFX-8325-240E4  
480  
480  
480  
480  
480  
480  
480  
480  
480  
480  
3
3
3
3
3
3
3
3
3
3
60  
96  
4" - 150#  
4" - 150#  
4" - 150#  
6" - 150#  
6" - 150#  
8" - 150#  
10" - 150#  
10" - 150#  
12" - 150#  
14" - 150#  
1
1
1
2
3
2
3
4
6
8
2"  
2"  
2"  
2"  
2"  
3"  
3"  
3"  
3"  
3"  
#1  
#2  
#3  
#3  
#3  
#4  
#4  
#4  
#4  
#4  
OCE-05040-2-483  
OCE-06080-2-483  
OCE-12120-2-483  
OCE-12120-2-483  
OCE-12120-2-483  
OCE-25300-3-483  
OCE-25300-3-483  
OCE-25300-3-483  
OCE-25300-3-483  
OCE-25300-3-483  
12  
24  
36  
60  
90  
120  
180  
240  
144  
144  
144  
300  
300  
300  
300  
300  
Table D – E2 Housing Renewal Parts Identification  
Heater  
Immersion  
ANSI  
Number  
of Tubes  
Tube  
OCE  
Replacement  
Model  
kW  
4
8
Volts Phase Length (In.)  
Flange Size  
Diameter  
Element No.  
OCE Model No.  
LTFX-125-004E2  
LTFX-128-008E2  
LTFX-1212-012E2  
LTFX-3210-024E2  
LTFX-3215-036E2  
LTFX-3225-060E2  
LTFX-4225-090E2  
LTFX-8215-120E2  
LTFX-9220-180E2  
LTFX-12225-240E2  
480  
480  
480  
480  
480  
480  
480  
480  
480  
480  
3
3
3
3
3
3
3
3
3
3
60  
96  
4" - 150#  
4" - 150#  
4" - 150#  
8" - 150#  
8" - 150#  
8" - 150#  
10" - 150#  
12" - 150#  
14" - 150#  
14" - 150#  
1
1
1
3
3
3
4
8
9
2"  
2"  
2"  
2"  
2"  
2"  
2"  
2"  
2"  
2"  
#1  
#2  
#3  
#2  
#3  
#5  
#6  
#7  
#5  
#5  
OCE-05040-2-483  
OCE-06080-2-483  
OCE-06080-2-483  
OCE-06080-2-483  
OCE-06080-2-483  
OCE-25200-2-4803  
OCE-25225-2-4803  
OCE-15150-2-4803  
OCE-25200-2-4803  
OCE-25200-2-4803  
12  
24  
36  
60  
90  
120  
180  
240  
144  
120  
180  
300  
300  
180  
240  
300  
12  
Limited Warranty:  
Please refer to the Chromalox limited warranty applicable to this product at  
TA - S7 - EF.  
Litho in U.S.A.  
2150 N. RULON WHITE BLVD., OGDEN, UT 84404  
Phone: 1-800-368-2493  
 

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