Chromalox Electric Heater PN401 User Manual

®
Chromalox  
Installation, Operation  
4
FXTH  
and  
PN401  
RENEWAL PARTS IDENTIFICATION  
161-051300-001  
FEBRUARY, 2008  
Chromalox Type FXTH Flexible Tank Heater  
Vent Tube  
Thermowell  
Heater  
Terminal  
Housing  
Bolts. See  
Note 2  
3/4” NPT  
Heater Terminal Housing  
9-3/16”  
6-1/4”  
2”  
Gasket (Furnished)  
2-1/2” NPT  
Manhole Adapter (Optional)  
Customer Manhole Cover  
Lifting Cables  
Thermowell  
Riser  
14’  
Overtemperature  
Sensor  
12”  
8”  
Three Tube  
Heater Assembly  
Single Tube  
Heater Assembly  
Two Tube  
Heater Assembly  
B
C
Notes:  
1. Min. fluid Depth for safe heater operation is 12”.  
2. 5/8” - 11 x 1 in. long hex head bolts. 8 required.  
Specifications – Type FXTH  
Catalog Number of Recommended  
OCC or WCC Control Centers  
Amp / Tube  
Minimum  
Manhole  
Heater  
Length  
B
Heater  
Width  
C
No. Tubes  
and  
Circuits  
Approx  
Net Wt.  
Lbs.  
Catalog  
Number*  
kW  
240  
480  
Size (In.)  
240V  
480V  
6
8
10  
12  
15  
19  
24  
29  
7
14  
14  
14  
14  
12’3-3/4”  
15’3-3/4”  
15’3-3/4”  
15’3-3/4”  
5-1/4  
5-1/4  
5-1/4  
5-1/4  
1
1
1
1
FXTH-11206  
FXTH-11508  
FXTH-11510  
FXTH-11512  
79  
97  
97  
97  
(OCC or WCC)-15-213  
WCC-25-213  
WCC-10-413  
WCC-10-413  
WCC-15-413  
WCC-15-413  
10  
12  
14  
WCC-25-213  
WCC-30-213  
10  
12  
15  
18  
21  
24  
27  
30  
24  
29  
36  
43  
51  
58  
65  
72  
12  
14  
18  
22  
25  
29  
33  
36  
14  
14  
14  
14  
14  
14  
14  
14  
20’3-3/4”  
20’3-3/4”  
20’3-3/4”  
27’1”  
5-1/4  
5-1/4  
5-1/4  
5-1/4  
5-1/4  
5-1/4  
5-1/4  
5-1/4  
1
1
1
1
1
1
1
1
FXTH-12010  
FXTH-12012  
FXTH-12015  
FXTH-12718  
FXTH-13021  
FXTH-13224  
FXTH-13527  
FXTH-14030  
127  
127  
127  
170  
190  
205  
225  
250  
WCC-25-213  
WCC-30-213  
WCC-40-213  
WCC-45-213  
WCC-55-213  
WCC-60-213  
WCC-70-213  
WCC-75-213  
WCC-15-413  
WCC-15-413  
WCC-20-413  
WCC-25-413  
WCC-30-413  
WCC-30-413  
WCC-35-413  
WCC-40-413  
30’1”  
32’1”  
35’1”  
40’1”  
12  
16  
20  
24  
15  
19  
24  
29  
7
18  
18  
18  
18  
12’3-3/4”  
15’3-3/4”  
15’3-3/4”  
15’3-3/4”  
10-1/4  
10-1/4  
10-1/4  
10-1/4  
2
2
2
2
FXTH-21212  
FXTH-21516  
FXTH-21520  
FXTH-21524  
157  
194  
194  
194  
WCC-15-223  
WCC-25-223  
WCC-25-223  
WCC-30-223  
WCC-10-423  
WCC-10-423  
WCC-15-423  
WCC-15-423  
10  
12  
14  
20  
24  
30  
36  
42  
48  
54  
60  
24  
29  
36  
43  
51  
58  
65  
72  
12  
14  
18  
22  
25  
29  
33  
36  
18  
18  
18  
18  
18  
18  
18  
18  
20’3-3/4”  
20’3-3/4”  
20’3-3/4”  
27’1”  
10-1/4  
10-1/4  
10-1/4  
10-1/4  
10-1/4  
10-1/4  
10-1/4  
10-1/4  
2
2
2
2
2
2
2
2
FXTH-22020  
FXTH-22024  
FXTH-22030  
FXTH-22736  
FXTH-23042  
FXTH-23248  
FXTH-23554  
FXTH-24060  
253  
253  
253  
340  
380  
405  
440  
500  
WCC-25-223  
WCC-30-223  
WCC-40-223  
WCC-45-223  
WCC-55-223  
WCC-60-223  
WCC-70-223  
WCC-75-223  
WCC-15-423  
WCC-15-423  
WCC-20-423  
WCC-25-423  
WCC-30-423  
WCC-30-423  
WCC-35-423  
WCC-40-423  
30’1”  
32’1”  
35’1”  
40’1”  
18  
30  
36  
15  
24  
29  
7
12  
14  
24  
24  
24  
15’3-3/4”  
15’3-3/4”  
15’3-3/4”  
15-1/4  
15-1/4  
15-1/4  
3
3
3
FXTH-31218  
FXTH-31530  
FXTH-31536  
236  
291  
291  
WCC-15-233  
WCC-25-233  
WCC-30-233  
WCC-10-433  
WCC-15-433  
WCC-15-433  
30  
36  
45  
24  
29  
36  
12  
14  
18  
24  
24  
24  
20’3-3/4”  
20’3-3/4”  
20’3-3/4”  
15-1/4  
15-1/4  
15-1/4  
3
3
3
FXTH-32030  
FXTH-32036  
FXTH-32045  
370  
370  
370  
WCC-25-233  
WCC-30-233  
WCC-40-233  
WCC-15-433  
WCC-15-433  
(OCC or WCC)-20-433  
*Suffix letters with FXTH Catalog Number indicate modification from standard as follows:  
V= Voltage, W= Wattage, A= change in riser length, R= low temperature alarm contactor, D= temperature indicator and XX = special.  
© 2010 Chromalox, Inc.  
 
PREPARATION OF TANK TO RECEIVE HEATER  
Manhole Cover Adapter Assy.  
9-1/2” 1/4” Dia. Hole  
By Customer  
8 - 3/8” - 11 Drilled and  
Tapped Equally Spaced  
Holes on 11-3/4” B.C.  
13” Dia.  
(See Note 1)  
By Customer  
9-1/2” 1/4” Dia. Hole  
By Customer  
22-1/2”  
Conduit  
Opening  
8 - 3/8” - 11 Drilled and  
Tapped Equally Spaced  
Holes on 11-3/4” B.C.  
Manhole Cover  
3/8” Min.  
13-1/2” O.D.  
3/4”  
8”  
By Customer  
Machining of Manhole Cover to Receive  
FXTH Immersion Heater Terminal Box  
1/4”  
Manhole Cover  
1. Surface on top side of Tank Cover must be suitable for good gasket seating. The 13"  
dia. area containing the gasket seat must be free of loose scale and rust and shall have  
a maximum surface roughness of 250 RMS.  
2. Bolt hole orientation to axis of storage tank is not important.  
9-1/4” 14” By Customer  
Machining of Manhole Cover to Receive  
FXTH Immersion Heater Adapter Assembly  
1. This Dimension is for Storage Tank Clearance Hole.  
Figure B  
Figure C  
1. Double check internal dimensions of tank to be sure heater legs  
will stand straight on portion of tank bottom to its full length  
when in its operating position.  
installing heater. Sludge must not touch the corrugated heating  
surface of the immersion unit.  
6. Check point of tank suction to make sure it is 12” or more off bot-  
tom of tank. This will insure a minimum liquid level of 12” and  
prevent heater from being uncovered while in operation. The  
heater must not be energized unless it is completely submerged.  
7. Machine manhole cover per Figure B or install optional terminal  
housing manhole adapter to manhole cover or storage tank per  
Figure C. All welds must be liquid tight.  
DANGER: Hazard of Fire. If adapter is to be welded directly into  
tank, remove flammable liquids, and vent all combustible gases or  
vapors from storage tank before performing welding operations.  
2. Remove any obstructions which may interfere with proper instal-  
lation of heater into tank.  
3. Clean manhole area to eliminate dirt and water which can be  
picked up by heater during its insertion into tank.  
4. Time the installation so oil level in tank is half full or less. This  
will greatly facilitate insertion and positioning of heater.  
5. Check sludge in bottom of tank to ensure it does not interfere with  
operation of heater. Standard FXTH heaters are supplied with 4”  
sludge legs. Sludge in excess of 3” must be removed before  
INSTALLATION OF HEATER ASSEMBLY IN TANK  
1. If tank is type with manhole located near end of tank rather than  
in center, install a temporary pulling cable at far end of tank  
through any available port such as (l) fill pipe, (2) suction port, (3)  
auxiliary manhole, etc., and thread the cable through the tank and  
out the manhole to be used for installing the heater. The pulling  
cable will be used to pull front lifting cable through auxiliary port  
and then pulling cable is disconnected. See Figure D.  
Figure D  
2. Align heater assembly along centerline of tank having rear end  
(riser end) of assembly farthest from manhole. Note: On tanks  
with manhole near end rather than in center heater assembly  
should be placed on side of manhole farthest from end of tank.  
See Figure E.  
3. Tie the riser(s) with rope or suitable line at a point just below the  
union on riser(s). Anchor rope to any convenient nearby anchor-  
ing point. Length of rope should be sufficient to allow riser(s) to  
be inserted into tank just inside manhole but not below oil level.  
CAUTION: If oil gets into riser, it will cause failure of the heat-  
ing element.  
Figure E  
4. Carefully turn heater over, feet upward, taking care it is flexed in  
only the one plane. (See Figure F.) Support must be maintained on  
riser end of heater to avoid overstressing riser(s) until heater is  
lowered into tank.  
Figure F  
 
3
INSTALLATION OF HEATER ASSEMBLY IN TANK (cont’d.)  
5. Begin lowering heater into tank as per Figure G, Step 1 thru 3  
NOTE: In tanks where the configuration does not allow following  
the above procedure, or in above ground tanks, ask for Factory rec-  
ommendations for installation of heater.  
(end manhole) or Figure H, Step 4 thru 7 (center manhole). Once  
the heater has touched bottom, use pulling wire (front lifting  
cable) to pull heater toward far end of tank.  
6. Before lowering back end of heater, visually gage the remaining  
length of heater to be laid down, to be certain an equal amount of  
clearance is allowed at both ends of tank. Back end of heater is  
lowered into place using rear lifting cable. CAUTION: NEVER  
USE RISERS TO SUPPORT HEATER TUBES.  
Step 4  
7. Where additional heater assemblies are to be installed in the same  
manhole, follow same procedure, being careful not to interfere  
with risers or cable on the initial heater.  
Step 1  
Step 5  
Step 2  
Step 3  
Step 6  
Step 7  
Figure G – Tanks with Manholes Near End  
Figure H – Tanks with Center Manhole  
INSTALLATION OF FXTH TERMINAL HOUSING  
A. Position manhole cover adjacent to manhole. Very carefully untie  
rope from anchoring point and pass it through (1) manhole gasket,  
(2) opening in manhole cover, and (3) terminal housing gasket.  
Securely refasten rope to anchoring point. Do not allow riser  
end(s) to fall into oil, or permanent damage will result to the  
heater. Bolt down manhole cover using a suitable gasket sealant if  
required to obtain water-tight seal.  
B. Pull riser(s) upward into position next to terminal housing. Wrap  
teflon tape on threaded riser connections and fasten into underside  
of terminal housing. Unused connections on bottom of housing  
will already contain flush plugs. Attach lifting cables to ring on  
under side of terminal housing.  
C. Bolt terminal housing to manhole cover or manhole cover  
adapter, again using suitable gasket cement. If manhole cover is  
machined per Figure B, be sure to install copper gasket washers  
under bolt heads. Position housing so conduit connections are in  
the most convenient position for your particular installation.  
Connect all riser leads to terminals, following markers on wires  
and terminals referring to wiring diagram Figure J.  
D. Install power leads from terminal housing to control center. See  
Specifications Table, Page I for amperages to determine wire and  
conduit size as determined by the National Electric Code.  
E. To install thermostat wells, insert closed end of the well into brass  
fitting in bottom of terminal housing. Push well completely to  
bottom of tank. A preliminary measurement from manhole level  
to tank bottom will aid proper insertion. The well may first hit the  
heater. It is then necessary to manipulate the well so that it will  
glance off the rounded heater surface and extend to tank bottom.  
Mark side of tube at the swage fitting and then pun upward sev-  
eral feet to working level. Using a tube cutter, cut the tube at a  
point exactly 7” below the mark. Once the tube is cut, be extreme-  
ly careful the tube is not allowed to drop through fitting and into  
tank. Partially tighten fitting so this cannot happen. Position the  
upper end of well 5” off top of tube fitting, then firmly tighten the  
fitting. Insert bushing (located in shipping bag inside of terminal  
housing) into top of well. This will prevent burrs on tube from  
cutting the bulb or capillary of thermostat. Repeat this procedure  
until all wells are installed. There can be as many as three wells;  
(1) Thermostat, (2) Temperature Indicator, (3) Low Limit Alarm.  
F. Install thermostat mounting plate. Make sure thermowells are  
aligned with openings in plate and over-temperature leads from  
riser are brought through plate. Fasten plate into position.  
4
 
INSTALLATION OF HEATER ASSEMBLY IN TANK (cont’d.)  
G. Carefully unwind and straighten thermostat capillary tube. The  
I. If temperature indicator is employed, wire in accordance with  
Figure J. Use wire size as recommended for connecting to control  
center.  
capillary must be reasonably straight. Be absolutely certain the  
bulb is seated at bottom of well. Carefully coil any excess capil-  
lary and position next to thermostat and away from electrical con-  
nections. Repeat same procedure if low limit alarm is provided.  
Attach wire for overtemperature sensor to terminals.  
J. Install control wiring through 3/4" conduit connection as indicat-  
ed on page 1. Leave lid off' terminal housing until operational  
check is completed. Install breather tube on the outside of the ter-  
minal box as shown on page 1, Make sure top of tube is at least  
12" above the drainage water level. CAUTION: All conduit con-  
nections to terminal housing must be sealed to prevent entry of  
any water, water vapor or condensation into terminal housing.  
Breather tube length may be cut to shorten height, or extended for  
higher flood levels by using 3/8” compression tube coupling and  
3/8” tubing, as desired between formed breather tube and elbow  
fitting on side of terminal housing.  
NOTE: Over-temperature control is located in the Chromalox  
Control Center. If heater is supplied without control center, be  
sure to obtain an over-temperature control for a positive thermis-  
tor, otherwise heater will be without over-temperature protection.  
H. If the low temperature thermostat is being used, connect annunci-  
ator leads directly to terminals on this thermostat and provide an  
independent power source. The switch rating is; 20 amp @ 115V,  
15 amp @ 230V, pilot duty 125VA.  
IL1  
L1  
IL2  
IL3  
Terminal  
Blocks  
L2  
L3  
Fuses  
F3  
C1  
C2  
C3  
1
2
3
AL1  
AL2  
AL3  
Circuit  
Breaker  
F4  
F5  
BL1  
BL2  
BL3  
F6  
F7  
F8  
Ground  
OCC & WCC Control Center  
CL1  
CL2  
CL3  
F9  
F10  
F11  
F1  
F2  
H3  
H4 H2  
X2  
H1  
H2  
480V  
H3  
H3  
H1 H4  
H1  
4
H4 H2  
240V  
X1  
Power On  
G
Off - On  
Control  
ISS  
15  
26  
3 7  
5
5
Overtemp.  
Probes  
Control Relay  
6
7
8
6
7
8
1CR  
1CR  
Heat  
4 8  
Htr. Contactor #1  
A
Terminal Terminal  
Overtemp.  
Control  
Block  
Block  
C1  
1 TDR  
2 TDR  
#1 Time Delay Relay(15 Sec.)  
Non-Indicating  
Temp. Control  
#2 Time Delay Relay(30 Sec.)  
Low Temp. Alarm  
Heat  
A
1 TDR  
2
3
Contacts (Optional)  
Heater Contactor #2  
C2  
Heat  
Heater Contactor #3  
Overtemp.  
Temperature  
Indicator (Optional)  
A
C3  
2 TDR  
R
1. Contactor “1 CON” and no fuses are supplied on single stage models.  
2. Used on two stage models - fuses “3FU thru 8FU” - Contactor  
“2 Con” - Time delay relay “1TDR” - Pilot light “3LT”.  
3. Used on three stage models - fuses “3FU thru 11FU” - Contactor  
“2 Con & 3 Con” - Time delay relay “1TDR & 2TDR” - Pilot  
lights “3LT and 4LT”.  
1CR  
NOTES:  
A2  
A1  
Audible Alarm  
(Optional)  
4. Termistor connections: Necessary Jumpers - Factory Wired  
3 Heaters  
1 Heater  
2 Heaters  
Thermistors located on heater with leads in conduit riser.  
One thremistor per heater tube.  
Figure J  
5
 
ELECTRICAL AND OPERATIONAL CHECKS  
A. Having circuit breaker and power switch in “off” position, make  
E. Turn off circuit breaker and power switch, then re-set thermostat  
to desired setting for normal operation. The thermostat contains a  
factory adjusted stop which prevents settings above 150°F.  
F. If low temperature alarm feature is provided, set this control 10°  
to 15°F below the control thermostat setting.  
sure proper voltage supplied matches voltage of control panel and  
elements.  
B. Adjust controlling thermostat in terminal housing to a 50°F read-  
ing. Increase setting until thermostat switch just “clicks”. This  
setting is to be used for initial heater checkout.  
G. Installation of terminal housing lid and gasket (with proper gasket  
C. Turn circuit breaker to “on” and note green power light coming  
on. Turn on power switch and note first amber light will come on,  
and then subsequent amber light(s) as explained in Section.  
D. Observe control panel as heater goes through several heating  
cycles. A cycle is determined when all amber lights are off. Cycle  
interval can vary widely depending on amount of oil in tank.  
However, the thermostat has been set to keep the cycle time to a  
minimum.  
sealant) completes the check-out procedure.  
H. If any difficulties are encountered during the installation and  
check-out, call your local Chromalox Representative or  
Chromalox Product Service.  
INSTALLATION OF REMOTE CONTROL CENTER  
CAUTION: Hazard of electric shock. Any installation involving  
electric must be grounded to earth to eliminate shock hazard.  
1. A safe maximum temperature limit on control cabinet compo-  
nents is 125°F. Choose a mounting location not in direct sunlight  
or exposed to any other source of excessive heat. If the panel must  
be mounted in direct sun, a sun shield must be employed.  
2. Install proper control and power wiring to control center as per  
Figure J. Power lines are to be sized for the particular heater load.  
Double check to insure proper grounding procedures have been  
followed for heaters and control panel.  
3. Available inside control panel are connections A and A1 which  
provide for an over-temperature alarm; such as, horn, bell, etc., to  
be mounted remotely as required. These terminals are rated at  
50VA, 120V.  
Specifications – OCC and WCC Control Center (All Phases)  
Catalog Number  
OCC WCC  
Dimensions  
Inches  
Max.  
No.  
of  
Approx.  
Net Wt.  
Lbs.  
Max.  
Amps Per  
Dust and Oil Weatherproof  
Models  
kW Volts Circuit Circuits Tight Models  
H
W
D
6
8
240  
240  
15  
25  
30  
40  
1
1
1
1
OCC-15-213 WCC-15-213 24 20  
OCC-25-213 WCC-25-213 24 20  
OCC-30-213 WCC-30-213 24 20  
OCC-40-213 WCC-40-213 24 20  
8
8
8
8
64  
65  
65  
66  
12 240  
15 240  
18 240  
21 240  
24 240  
27 240  
30 240  
45  
55  
60  
70  
75  
1
1
1
1
1
OCC-45-213 WCC-45-213 30 24  
OCC-55-213 WCC-55-213 30 24  
OCC-60-213 WCC-60-213 30 24  
OCC-70-213 WCC-70-213 30 24  
OCC-75-213 WCC-70-213 30 24  
8
8
8
8
8
89  
91  
91  
96  
96  
12 240  
16 240  
24 240  
30 240  
36 240  
42 240  
48 240  
54 240  
60 240  
15  
25  
30  
40  
45  
55  
60  
70  
75  
2
2
2
2
2
2
2
2
2
OCC-15-223 WCC-15-223 30 24  
OCC-25-223 WCC-25-223 30 24  
OCC-30-223 WCC-30-223 30 24  
OCC-40-223 WCC-40-223 30 24  
OCC-45-223 WCC-45-223 42 30  
OCC-55-223 WCC-55-223 42 30  
OCC-60-223 WCC-60-223 42 30  
OCC-70-223 WCC-70-223 42 30  
OCC-75-223 WCC-75-223 42 30  
8
8
8
8
8
8
8
8
8
84  
86  
4. Electrical  
A. CAUTION: Hazard of severe shock. Make sure circuit  
breaker and panel switch are in “off” position.  
B. Make knockouts in control cabinet which are desired for final  
wiring installation.  
86  
91  
126  
128  
128  
135  
135  
C. Connect leads from riser(s) to identified terminals shown on  
Figure J.  
D. TEMPORARY WIRING TO SIMULATE ACTIVATION OF  
CONTROL CIRCUIT.  
18 240  
30 240  
36 240  
45 240  
15  
25  
30  
40  
3
3
3
3
OCC15-233 WCC-15-233 36 30  
OCC-25-233 WCC-25-233 36 30  
OCC-30-233 WCC-30-233 36 30  
OCC-40-233 WCC-40-233 36 30  
8
8
8
8
113  
120  
125  
127  
1. Jumper terminals S to S1.  
2. Connect overtemperature control leads to terminals 5, 6, 7  
or 8 as shown on Figure J.  
6
8
480  
480  
10  
15  
20  
25  
30  
35  
40  
1
1
1
1
1
1
1
OCC-10-413 WCC-10-413 24 20  
OCC-15-413 WCC-15-413 24 20  
OCC-20-413 WCC-20-413 24 20  
OCC-25-413 WCC-25-413 24 20  
OCC-30-413 WCC-30-413 24 20  
OCC-35-413 WCC-30-413 24 20  
OCC-40-413 WCC-30-413 24 20  
8
8
8
8
8
8
8
64  
64  
64  
64  
64  
64  
64  
3. Connect green ground wire lead from riser(s) to grounding  
lug in control box and from control box to a suitable  
ground.  
15 480  
18 480  
21 480  
27 480  
30 480  
4. Connect power cable of proper voltage to input of control  
box.  
5. Secure control box door, then place circuit breaker in “on”  
position and energize heater with panel switch. Start with  
45 second time interval and increase until a definite rise in  
temperature on each heater tube can be felt with the bare  
hand. NOTE: Adjustable time delay(s) in multi-stage units  
have been preset at factory to provide steps for energizing  
individual circuits.  
6. Observe green light (which indicates “power”) when clos-  
ing circuit breaker, first amber light with panel switch "on"  
and subsequent amber light(s) (if any) at approximately 15  
second intervals.  
12 480  
20 480  
30 480  
36 480  
42 480  
54 480  
60 480  
10  
15  
20  
25  
30  
35  
40  
2
2
2
2
2
2
2
OCC-10-423 WCC-10-423 30 24  
OCC-15-423 WCC-15-423 30 24  
OCC-20-423 WCC-20-423 30 24  
OCC-25-423 WCC-25-423 30 24  
OCC-30-423 WCC-30-423 30 24  
OCC-35-423 WCC-35-423 30 24  
OCC-40-423 WCC-40-423 30 24  
8
8
8
8
8
8
8
84  
84  
84  
89  
91  
91  
96  
18 480  
36 480  
45 480  
10  
15  
20  
3
3
3
OCC-10-433 WCC-10-433 36 30  
OCC-15-433 WCC-15-433 36 30  
OCC-20-433 WCC-20-433 36 30  
8
8
8
113  
113  
113  
7. Have qualified electrician, using an amprobe, check amper-  
age in individual heater leads to insure uniform amperage.  
8. Turn circuit breaker to “off” position and remove tempo-  
rary jumper from terminals Sand S1  
6
 
OPTIONAL EQUIPMENT  
Temperature Indicators (Suffix “D”)  
(FXTH Heater Assembly and Control Center will have  
suffix "D" e.g. FXTH-11206D, WCG15-213D)  
It is very important the resistor wire be properly soldered after  
adjusting.  
MOUNTING  
NOTE: When Thermocouples with external resistance higher than 10  
ohms will be used, a special pyrometer will be required. The use of  
other than thermocouple wire for leads or extensions may result in  
improper ambient compensation.  
Temperature indicators are balanced for accurate reading in a normal  
vertical position unless specified otherwise. All pyrometers labeled  
"shielded meter" may be used in any type of panel with little or no  
effect on calibration. Those labeled "non-magnetic" must be used  
only on aluminum, plastic, wood or other non-magnetic panels. They  
will read low if mounted in a steel panel. Pyrometers which are  
labeled "magnetic" are intended for installation on steel panels. A  
steel compensating ring is normally supplied where panel material is  
not specified. Discard the ring when mounting on a steel panel. If the  
pyrometer is used on a non-magnetic panel, the steel ring must be  
used. Be sure the slit in the ring is at the top of the meter barrel and  
the ring is pushed as far forward as it will go.  
ABBREVIATED TABLE OF THERMOCOUPLE RESISTANCE  
The table lists the resistance in ohms per pair-foot for various types  
of commonly used thermocouples for a number of different gauges of  
wire. By using this table, it is necessary only to measure the length of  
the thermocouple, knowing the type and gauge, to determine its  
approximate resistance. (Actual measurement of the thermocouple  
resistance is preferred to using the table.)  
Ohms Per Pair - Foot  
THERMOCOUPLE SELECTION AND CALIBRATION  
Each pyrometer is marked on the dial with the type of thermocouple  
and the total external resistance for which it is calibrated. Use of any  
other type of thermocouple or one with a higher resistance than  
marked will result in incorrect readings. (Type J thermocouples are  
normally used.) All standard pyrometers are calibrated for 10 ohms  
external thermocouple resistance and are provided with a 10 ohm cal-  
ibrating resistor bobbin. (Non-standard pyrometers are usually cali-  
brated for the specific external resistance ordered and no resistor bob-  
bin is supplied.) This resistor bobbin must be adjusted so the total  
resistance of the thermocouple and the bobbin add up to 10 ohms in  
order to maintain calibration accuracy. Therefore, for a 5 foot, 20  
gauge, iron-constantan thermocouple, the resistance of the thermo-  
couple would be approximately 1.75 ohms and this resistance must be  
subtracted from the calibrating bobbin. Each turn of the wire on the  
resistor bobbin represents 0.5 ohms and for this example, 3-1/2 turns  
would be removed. The total resistance of the thermocouple plus the  
resistor bobbin would then add up to 10 ohms. For other values of  
thermocouple resistance, simply remove more or less turns to adjust  
for the total value of external resistance marked on the pyrometer  
dial.  
Iron/Constantan Copper/Constantan Chromel/Alumel  
Gauge B & S  
(Type J)  
(Type T)  
(Type K)  
8
10  
12  
14  
16  
18  
20  
22  
24  
26  
28  
30  
.0215  
.0341  
.0542  
.0863  
.1370  
.2180  
.3570  
.5510  
.8770  
1.390  
2:220  
3.520  
.0184  
.0293  
.0466  
.0741  
.1180  
.1870  
.2980  
.4690  
.7530  
1.200  
1.910  
3.030  
.0365  
.0580  
.0922  
.1470  
.2330  
.3710  
.5900  
.9370  
1.490  
2.370  
3.770  
5.980  
CHROMALOX TYPE TMC 7-DAY TIMER  
TMC 7-day Calendar, Electric Dial Timer is used to provide auto-  
matic start-up/off-on control of large tank heaters or could be set up  
for non-peak operation. Standard features: 7-day calendar dial per-  
mits different on/off schedules on different days of week. 2 to 14  
replaceable trippers for up to 4 on/off operations per day, up to 28  
on/off operations per week. 3 hour minimum on or off time; 21 hour  
maximum on or off time. Independent 4-pole design allows SPST,  
DPST, SPDT, switching. Manual on/off lever transfers switch opera-  
tion without disturbing daily or weekly preset schedule. Heavy duty  
synchronous motor suitable for operation between -40°F and +140°F.  
Switch slider bar assures positive switching. Heavy duty terminals  
accommodate up to AWG No.8 wire.  
CAUTION: To set the correct day and time at beginning of initial  
start-up, ROTATE THE PROGRAM CLOCK DIAL CLOCKWISE  
ONLY. DO NOT ATTEMPT TO TURN POINTER!  
Adjusting and Maintenance of Time Switch:  
1. Periodically check trippers to insure that they are tightly fastened  
to Program Clock dial. CAUTION: TIGHTEN TRIPPERS WITH  
FINGERS ONLY!  
2. Rotate Program Clock dial CLOCKWISE one hour in Spring to  
adjust for daylight saving time (in areas where required). In Fall,  
carefully rotate clock dial CLOCKWISE approximately one full  
turn to reset at correct day and time for standard time. Check all  
trippers to insure they have not moved during rotation.  
3. The Program Clock motor is permanently lubricated. Lubrication  
of other parts is not required.  
OPERATION  
“Off” Setting - de-energizes the entire zone control circuit, thus de-  
energizing all heating-cooling equipment in the zone. This setting can  
be used for extended summer shutdowns, etc.  
4. The Program Clock switch contacts are factory set and need no  
field adjustment.  
“Automatic” Setting - allows the Day-Night Clock Panel to cycle  
the control system according to the program clock dial tripper set-  
tings.  
Renewal  
Part No.  
Volts  
60 Hz  
Model  
Operation  
Switch  
Amps  
To Set Trippers - Refer to picture for typical setup of a Seven Day  
Program. Two trippers must be used for each day; an “A” tripper for  
switching from “Night Setback” to “Day Operation” and a “B” trip-  
per for switching from “Day Operation” to “Night Setback”.  
4 Pole  
2 N.O.  
2 N.C.  
TMC71  
311-057070-001  
Seven Day  
120  
40  
7
 
RENEWAL PARTS IDENTIFICATION  
What the Catalog Number means:  
240  
Voltage  
480  
FXTH – 2 12 12  
WCC  
10 - 423  
345  
Catalog No.  
kW  
Element Part Number  
Element Part Number  
1
2
3
4
1
2
1 – Flexible Tank Heater  
2 – Number of Tubes  
3 – “B” Dimension  
4 – kW Rating  
1 – OCC - Oil Tight & Dust Tight Control Center  
WCC - Weatherproof Control Center  
2 – Maximum Amperage per Circuit  
3 – Maximum Voltage 2 - 240, 4 - 480, 6 - 600  
4 – Number of Circuits  
FXTH-11206  
FXTH-11508  
FXTH-11510  
FXTH-11512  
6
8
10  
12  
063-115244-004  
063-115244-003  
063-115244-005  
063-115244-009  
063-115244-002  
063-115244-004  
063-115244-006  
063-115244-010  
5 – Phase  
FXTH-12010  
FXTH-12012  
FXTH-12015  
FXTH-12718  
FXTH-13021  
FXTH-13224  
FXTH-13527  
FXTH-14030  
10  
12  
15  
18  
21  
24  
24  
30  
063-115244-007  
063-115244-011  
063-115244-013  
063-115244-015  
063-115244-017  
063-115244-019  
063-115244-021  
063-115244-023  
063-115244-008  
063-115244-012  
063-115244-014  
063-115244-016  
063-115244-018  
063-115244-020  
063-115244-022  
063-115244-024  
-----------------------------------------------------------------------------------------------------------------------------------------  
Modified FXTH Standard Heater (FXTH-32036A)  
Voltage................................................V  
Wattage.........................................W  
Change in Riser Length......................................................................................A  
Low Temp. Alarm Contacts................................................................................R  
Temperature Indicator.........................................................................................D  
WCC  
Voltage.............................................................................................................V  
Audible Alarm .................................................................................................H  
Time Clock.......................................................................................................T  
Temperature Indicator .....................................................................................D  
All Others .....................................................................................................XX  
FXTH-21212  
FXTH-21516  
FXTH-21520  
FXTH-21524  
FXTH-22020  
FXTH-22024  
FXTH-22030  
FXTH-22736  
FXTH-23042  
FXTH-23248  
FXTH-23554  
FXTH-24060  
12  
16  
20  
24  
20  
24  
30  
36  
42  
48  
54  
60  
063-115244-001 (2)  
063-115244-003 (2)  
063-115244-005 (2)  
063-115244-009 (2)  
063-155244-007 (2)  
063-115244-011 (2)  
063-115244-013 (2)  
063-115244-015 (2)  
063-115244-017 (2)  
063-115244-019 (2)  
063-115244-021 (2)  
063-115244-023 (2)  
063-115244-002 (2)  
063-115244-004 (2)  
063-115244-006 (2)  
063-115244-010 (2)  
063-115244-008 (2)  
063-115244-012 (2)  
063-115244-014 (2)  
063-115244-016 (2)  
063-115244-018 (2)  
063-115244-020 (2)  
063-115244-022 (2)  
063-115244-024 (2)  
Common Parts  
Part Number  
Terminal Housing Manhole adapter.................................... 306-115694-001  
Manhole adapter Flange ..................................................... 121-115692-001  
Manhole adapter Housing................................................... 065-115693-001  
Flange Gasket ..................................................................... 132-115515-001  
Housing Gasket .................................................................. 132-113661-001  
Thermostat ......................................................................... 300-115621-001  
Thermocouple Probe .......................................................... 309-121168-001  
Circuit Breaker Handle (150 Amps or less) ........................ 139-071820-000  
Circuit Breaker Handle (151 Amps to 225 Amps)............... 139-071820-010  
Pilot Light - Red ................................................................. 213-120816-005  
Amber ............................................................................ 213-120816-001  
Green ............................................................................ 213-120816-002  
Plexiglass Window ............................................................. 207-121061-001  
Alarm ................................................................................. 385-122101-001  
Selector Switch (WCC only) ............................................... 292-120827-002  
Selector Switch (OCC only) ................................................ 292-120827-001  
Moto-gard Overtemp. Control ............................................ 300-115550-001  
Control Relay 300V, 10A, 3 Pole......................................... 072-120451-001  
Time Clock - 7-day ............................................................. 311-057070-001  
Pyrometer........................................................................... 308-051161-001  
NEMA - IV Seal on Circuit Breaker Handle ......................... 139-071820-013  
FXTH-31218  
FXTH-31530  
FXTH-31536  
FXTH-32030  
FXTH-32036  
FXTH-32045  
18  
30  
36  
30  
36  
45  
063-115244-001 (3)  
063-115244-005 (3)  
063-115244-009 (3)  
063-115244-007 (3)  
063-115244-011 (3)  
063-115244-013 (3)  
063-115244-002 (3)  
063-115244-006 (3)  
063-115244-010 (3)  
063-115244-008 (3)  
063-115244-012 (3)  
063-115244-014 (3)  
Note: Number in ( ) indicates quantity of same part number used.  
REPLACEMENT PARTS FOR OCC AND WCC CONTROL CENTER  
Qty.  
Description  
Part Number  
Qty.  
Description  
Part Number  
OCC or WCC-10-413, 480V, 1-3ø, 6 & 8 kW  
OCC or WCC-15-213, 240V, 1-3ø, 6 kW  
1
1
2
1
Circuit Breaker, 480V, 15 Amp, 3 pole........................104-071818-017  
Contactor, 600V, 20 Amp, 3 pole................................072-120812-005  
Fuses, 1/2 (F1 and F2) ...............................................128-114696-010  
Transformer, 150VA....................................................315-048507-018  
1
1
2
1
Circuit Breaker, 240V, 20 Amp, 3 pole........................104-071818-003  
Contactor, 600V, 20 Amp, 3 pole................................072-120812-005  
Fuses, FNQ 8/10 (F1 and F2)......................................128-114696-011  
Transformer, 150VA ...................................................315-048507-018  
OCC or WCC-10-423, 480V, 2-3ø, 12 & 16 kW  
OCC or WCC-15-223, 240V, 2-3ø, 12 kW  
1
2
2
6
1
1
Circuit Breaker, 480V, 25 Amp, 3 pole........................104-071818-019  
Contactors, 600V, 20 Amp, 3 pole..............................072-120812-005  
Fuses, FNQ 6/10 (F1 and F2)......................................128-114696-005  
Fuses, KTK-15 (F3 thru F8)........................................128-047763-002  
Transformer, 150VA....................................................315-048507-018  
Time Delay Relay........................................................311-115540-001  
1
2
2
6
1
1
Circuit Breaker, 240V, 40 Amp, 3 pole........................104-071818-007  
Contactors, 600V, 20 Amp, 3 pole ............................072-120812-005  
Fuses, FNM8/10 (F1 and F2) .....................................128-114696-012  
Fuses, KTK-20 (F3 thru F8)........................................128-047763-002  
Time Delay Relay........................................................311-115540-001  
Transformer, 150VA....................................................315-048507-018  
OCC or WCC-10-433, 480V, 3-3ø, 18 kW  
OCC or WCC-15-233, 240V, 3-3ø, 18 kW  
1
3
9
1
2
2
Circuit Breaker, 480V, 30 Amp, 3 pole........................104-071818-020  
Contactors, 600V, 20 Amp, 3 pole..............................072-120812-005  
Fuses, KTK-15 (F3 thru F11)......................................128-047763-002  
Transformer 250VA ....................................................315-048507-024  
Relay Time Delay........................................................311-115540-001  
Fuse FNQ 6/10 (F1 and F2) ........................................128-114696-005  
1
3
9
1
2
2
Circuit Breaker, 240V, 60 Amp, 3 pole........................104-071818-010  
Contactors, 600V, 20 Amp, 3 pole..............................072-120812-005  
Fuses, KTK-20............................................................128-047763-002  
Transformer, 250VA ...................................................315-048507-024  
Time Delay Relay........................................................311-115540-001  
Fuse FNM 1- 4/10.......................................................128-114696-013  
8
 
REPLACEMENT PARTS FOR OCC AND WCC CONTROL CENTER (cont’d.)  
Qty.  
Description  
Part Number  
Qty.  
Description  
Part Number  
OCC or WCC-15-413, 480V, 1-3ø, 10 & 12 kW  
OCC or WCC-25-233, 240V, 3-3ø, 30 kW  
1
1
2
1
Circuit Breaker, 480V, 20 Amp, 3 pole........................104-071818-018  
Contactor, 600V, 20 Amp, 3 pole................................072-120812-005  
Fuses, FNQ 1/2 (F1 and F2)........................................128-114696-010  
Transformer, 150VA....................................................315-048507-018  
1
3
9
1
2
2
Circuit Breaker, 240V, 100 Amp, 3 pole......................104-071818-014  
Contactors, 600V, 30 Amp, 3 pole ............................072-120812-005  
Fuses, KTK-30 (F3 thru F11)......................................128-047763-005  
Transformer, 250VA....................................................315-048507-024  
Time Delay Relay........................................................311-115540-001  
Fuses, FNM 1- 4/10 (F1 and F2).................................128-114696-013  
OCC or WCC-15-423, 480V, 2-3ø, 20 & 24 kW  
OCC or WCC-25-413, 480V, 1-3ø, 18 kW  
1
2
2
6
1
1
Circuit Breaker, 480V, 40 Amp, 3 pole........................104-071818-022  
Contactors, 600V, 20 Amp, 3 pole..............................072-120812-005  
Fuses, FNQ 6/10 (F1 and F2)......................................128-114696-005  
Fuses, KTK-20 (F3 thru F8)........................................128-047763-003  
Transformer, 150VA....................................................315-048507-018  
Time Delay Relay........................................................311-115540-001  
1
1
2
1
Circuit Breaker, 480V, 30 Amp, 3 pole........................104-071818-020  
Contactor, 600V, 30 Amp, 3 pole................................072-120812-001  
Fuses, FNQ V2 (F1 and F2).........................................128-114696-010  
Transformer, 150VA....................................................315-048507-018  
OCC or WCC-10-433, 480V, 3-3ø, 30 kW  
OCC or WCC-25-423, 480V, 2-3ø, 36 kW  
1
3
9
1
2
2
Circuit Breaker, 480V, 50 Amp, 3 pole........................104-071818-024  
Contactors, 600V, 20 Amp, 3 pole ............................ 072-120812-005  
Fuses, KTK-20 (F3 thru F11)......................................128-047763-002  
Transformer, 250VA....................................................315-048507-024  
Time Delay Relay........................................................311-115540-001  
Fuses, FNQ 6/10 (F1 and F2)......................................128-114696-005  
1
2
2
6
1
1
Circuit Breaker, 480V, 60 Amp, 3 pole........................104-071818-025  
Contactors, 600V, 30 Amp, 3 pole..............................072-120812-001  
Fuses, FNQ 4/10 (F1 and F2)......................................128-114696-010  
Fuses, FRS-35 (F3 thru F8)........................................128-121133-063  
Transformer, 150VA ...................................................315-048507-018  
Time Delay Relay........................................................311-115540-001  
OCC or WCC-15-433, 480V, 3-3ø, 36 kW  
OCC or WCC-30-213, 240V, 1-3ø, 12 kW  
1
3
9
1
2
2
Circuit Breaker, 480V, 70 Amp, 3 pole........................104-071818-026  
Contactors, 600V, 20 Amp, 3 pole..............................072-120812-005  
Fuses, KTK-20 (F3 thru F11)......................................128-047763-003  
Transformer, 250VA....................................................315-048507-024  
Time Delay Relay .......................................................311-115540-001  
Fuses, FNQ 6/10 (F1 and F2)......................................128-114696-005  
1
1
2
1
Circuit Breaker, 240V, 40 Amp, 3 pole .......................104-071818-007  
Contactor, 600V, 30 Amp, 3 pole............................... 072-120812-005  
Fuses, FNQ 8/10 (F1 and F2)......................................128-114696-011  
Transformer, 150VA....................................................315-048507-018  
OCC or WCC-20-413, 480V, 1-3ø, 15 kW  
OCC or WCC-30-223, 240V, 2-3ø, 24 kW  
1
1
2
1
Circuit Breaker, 600V, 25 Amp, 3 pole........................104-071818-019  
Contactor, 600V, 20 Amp, 3 pole................................072-120812-005  
Fuses, FNQ V2 (F1 and F2).........................................128-114696-010  
Transformer, 150VA....................................................315-048507-018  
1
2
2
6
1
1
Circuit Breaker, 240V, 80 Amp, 3 pole........................104-071818-012  
Contactors, 600V, 30 Amp, 3 pole..............................072-120812-001  
Fuses, FNM 8/10 (F1 and F2).....................................128-114696-012  
Fuses, FRN (F3 thru F8) .............................................128-121133-077  
Time Delay Relay........................................................311-115540-001  
Transformer, 150VA....................................................315-048507-018  
OCC or WCC-20-423, 480V, 2-3ø, 30 kW  
OCC or WCC-30-233, 240V, 3-3ø, 36 kW  
1
2
2
6
1
1
Circuit Breaker, 480V, 50 Amp, 3 pole........................104-071818-024  
Contactors, 600V, 20 Amp, 3 pole..............................072-120812-005  
Fuses, FNQ 6/10 (F1 and F2)......................................128-114696-005  
Fuses, KTK-25 (F3 thru F8)........................................128-047763-004  
Transformer, 150VA....................................................315-048507-018  
Time Delay Relay .......................................................311-115540-001  
1
3
9
1
2
2
Circuit Breaker, 600V, 125 Amp, 3 pole......................104-071818-045  
Contactor, 600V, 30 Amp, 3 pole................................072-120812-005  
Fuses, FRN 40 (F3 thru F11)......................................128-121133-077  
Transformer, 250VA....................................................315-048507-024  
Relays, Time Delay.....................................................311-115540-001  
Fuses, FNM 1- 4/10 (F1 and F2).................................128-114696-013  
OCC or WCC-20-433, 480V, 3-3ø, 45 kW  
OCC or WCC-30-413, 480V, 1-3ø, 21 & 24 kW  
1
3
9
1
2
2
Circuit Breaker, 480V, 70 Amp, 3 pole........................104-071818-026  
Contactors, 600V, 20 Amp, 3 pole..............................072-120812-005  
Fuses, KTK-25 (F3 thru F11)......................................128-047763-004  
Transformer, 250VA....................................................315-048507-024  
Time Delay Relay .......................................................311-115540-001  
Fuses, FNQ 6110 (F1 and F2).....................................128-114696-005  
1
1
2
Circuit Breaker, 480V, 40 Amp, 3 pole........................104-071818-022  
Contactor, 600V, 30 Amp, 3 pole................................072-120812-001  
Fuses, FNQ V2 (F1 and F2).........................................128-114696-010  
OCC or WCC-25-213, 240V, 1-3ø, 3 & 8 & 10 kW  
OCC or WCC-30-423, 480V, 2-3ø, 42 kW  
1
1
2
1
Circuit Breaker, 240V, 30 Amp, 3 pole........................104-071818-005  
Contactor, 600V, 30 Amp, 3 pole................................072-120812-005  
Fuses, FNQ 8/10 (F1 and F2)......................................128-114696-011  
Transformer, 150VA....................................................315-048507-018  
1
2
2
6
1
1
Circuit Breaker, 480V, 70 Amp, 3 pole .......................104-071818-026  
Contactor, 600V, 30 Amp, 3 pole................................072-120812-001  
Fuses, FNQ 4/10 (F1 and F2)......................................128-114696-010  
Fuses, FRS-40 (F3 thru F8)........................................128-121133-064  
Transformer, 150VA....................................................315-048507-018  
Time Delay Relay....................................................... 311-115540-001  
OCC or WCC-25-223, 240V, 2-3ø, 16 & 20 kW  
OCC or WCC-30-423, 480V, 2-3ø, 48 kW  
1
2
2
6
1
1
Circuit Breaker, 240V, 70 Amp, 3 pole........................104-071818-011  
Contactors, 600V, 30 Amp, 3 pole..............................072-120812-001  
Fuses, FNM 8/10 (F1 and F2).....................................128-114696-012  
Fuses, KTK-30 (F3 thru F8)....................................... 128-047763-005  
Transformer, 150VA....................................................315-048507-018  
Time Delay Relay........................................................311-115540-001  
1
2
2
6
1
1
Circuit Breaker, 480V, 80 Amp, 3 pole........................104-071818-027  
Contactors, 600V, 30 Amp, 3 pole..............................072-120812-001  
Fuses, FNQ 4/10 (F1 and F2)......................................128-114696-010  
Fuses, FRS-45 (F3 thru F8)........................................128-121133-065  
Transformer, 150VA....................................................315-048507-018  
Time Delay Relay........................................................311-115540-001  
9
 
REPLACEMENT PARTS FOR OCC AND WCC CONTROL CENTER (cont’d.)  
Qty.  
Description  
Part Number  
Qty.  
Description  
Part Number  
OCC or WCC-35-413, 480V, 1-3ø, 27 kW  
OCC or WCC-55-213, 240V, 1-3ø, 21 kW  
1
1
2
1
Circuit Breaker, 480V, 45 Amp, 3 pole........................104-071818-023  
Contactor, 600V, 60 Amp, 3 pole................................072-120812-002  
Fuses, FNQ V2 (F1 and F2).........................................128-114696-010  
Transformer, 150VA....................................................315-048507-018  
1
1
2
1
Circuit Breaker, 240V, 70 Amp, 3 pole........................104-071818-011  
Contactor, 600V, 60 Amp, 3 pole................................072-120812-002  
Fuses, FNQ 8/10 (F1 and F2)......................................128-114696-011  
Transformer, 150VA....................................................315-048507-018  
OCC or WCC-35-423, 480V, 2-3ø, 54 kW  
OCC or WCC-55-223, 240V, 2-3ø, 42 kW  
1
2
2
6
1
1
Circuit Breaker, 480V, 90 Amp, 3 pole .......................104-071818-028  
Contactors, 600V, 60 Amp, 3 pole..............................072-120812-002  
Fuses, FNQ 4/10 (F1 and F2)......................................128-114696-010  
Fuses, FRS-50 (F3 thru F8)........................................128-121133-066  
Transformer, 150VA....................................................315-048507-018  
Time Delay Relay........................................................311-115540-001  
1
2
2
6
1
1
Circuit Breaker, 600V, 150 Amp, 3 pole .....................104-071818-046  
Contactors, 600V, 60 Amp, 3 pole..............................072-120812-002  
Fuses, FNM 8/10 (F1 and F2).....................................128-114696-012  
Fuses, FRN-70 (F3 thru F8) .......................................128-121133-081  
Transformer, 150VA....................................................315-048507-018  
Time Delay Relay .......................................................311-115540-001  
OCC or WCC-40-213, 240V, 1-3ø, 15 kW  
OCC or WCC-60-213, 240V, 1-3ø, 24 kW  
1
1
2
1
Circuit Breaker, 240V, 50 Amp, 3 pole........................104-071818-009  
Contactor, 600V, 60 Amp, 3 pole............................... 072-120812-002  
Fuses, FNQ 8/10 (F1 and F2)......................................128-114696-011  
Transformer, 150VA....................................................315-048507-018  
1
1
2
1
Circuit Breaker, 240V, 80 Amp, 3 pole........................104-071818-012  
Contactor, 600V, 60 Amp, 3 pole................................072-120812-002  
Fuses, FNQ 8/10 (F1 and F2)......................................128-114696-011  
Transformer, 150VA....................................................315-048507-018  
OCC or WCC-40-223, 240V, 2-3ø, 30 kW  
OCC or WCC-60-223, 240V, 2-3ø, 48 kW  
1
2
2
6
1
1
Circuit Breaker, 240V, 100 Amp, 3 pole......................104-071818-014  
Contactors, 600V, 60 Amp, 3 pole..............................072-120812-002  
Fuses, FNM 1- 4/10 (F1 and F2).................................128-114696-013  
Fuses, FRN-45 (F3 thru F8)........................................128-121133-078  
Time Delay Relay........................................................311-115540-001  
Transformer, 250VA....................................................315-048507-024  
1
2
2
6
1
1
Circuit Breaker, 600V, 150 Amp, 3 pole......................104-071818-046  
Contactors, 600V, 60 Amp, 3 pole..............................072-120812-002  
Fuses, FNM 8/10 (F1 and F2).....................................128-114696-012  
Fuses, FRN-80 (F3 thru F8)........................................128-121133-082  
Transformer, 150VA....................................................315-048507-018  
Time Delay Relay........................................................311-115540-001  
OCC or WCC-40-233, 240V, 3-3ø, 45 kW  
OCC or WCC-70-213, 240V, 1-3ø, 27 kW  
1
3
9
1
2
2
Circuit Breaker, 600V, 150 Amp, 3 pole .....................104-071818-046  
Contactors, 600V, 60 Amp, 3 pole ........................... 072-120812-002  
Fuses, FRN 45 (F3 thru F11)......................................128-121133-078  
Transformer, 250VA....................................................315-048507-024  
Time Delay Relay .......................................................311-115540-001  
Fuses, FNM 1-4/10 (F1 and F2)..................................128-114696-013  
1
1
2
1
Circuit Breaker, 240V, 90 Amp, 3 pole........................104-071818-013  
Contactor, 600V, 100 Amp, 3 pole..............................072-120812-003  
Fuses, FNQ 8/10 (F1 and F2)......................................128-114696-011  
Transformer, 150VA....................................................315-048507-018  
OCC or WCC-40-413, 480V, 1-3ø, 30 kW  
OCC or WCC-70-223, 240V, 2-3ø, 54 kW  
1
1
2
1
Circuit Breaker, 480V, 50 Amp, 3 pole........................104-071818-024  
Contactor, 600V, 60 Amp, 3 pole................................072-120812-002  
Fuses, FNQ 1/2 (F1 and F2)........................................128-114696-010  
Transformer, 150VA....................................................315-048507-018  
1
2
2
6
1
1
Circuit Breaker, 600V, 175 Amp, 3 pole .....................104-071819-019  
Contactors, 600V, 100 Amp, 3 pole ..........................072-120812-003  
Fuses, FNM 1-1/8 (F1 and F2)....................................128-114696-020  
Fuses, FRN-90 (F3 thru F8)........................................128-121133-083  
Transformer, 250VA....................................................315-048507-024  
Time Delay Relay........................................................311-115540-001  
OCC or WCC-40-423, 480V, 2-3ø, 60 kW  
OCC or WCC-75-213, 240V, 1-3ø, 30 kW  
1
2
2
6
1
1
Circuit Breaker, 480V, 100 Amp, 3 pole......................104-071818-029  
Contactors, 600V, 60 Amp, 3 pole..............................072-120812-002  
Fuses, FNQ 4/10 (F1 and F2)......................................128-114696-010  
Fuses, FRS-35 (F3 thru F8)........................................128-121133-063  
Transformer, 150VA....................................................315-048507-018  
Time Delay Relay........................................................311-115540-001  
1
1
2
1
Circuit Breaker, 240V, 100 Amp, 3 pole......................104-071818-014  
Contactor, 600V, 100 Amp, 3 pole..............................072-120812-003  
Fuses, FNQ 8/10 (F1 and F2)......................................128-114696-011  
Transformer, 150VA....................................................315-048507-018  
OCC or WCC-45-213, 240V, 1-3ø, 18 kW  
OCC or WCC-72-223, 240V, 2-3ø, 60 kW  
1
1
2
1
Circuit Breaker, 240V, 60 Amp, 3 pole........................104-071818-010  
Contactor, 600V, 60 Amp, 3 pole................................072-120812-002  
Fuses, FNQ 8/10 (F1 and F2)......................................128-114696-011  
Transformer, 150VA....................................................315-048507-018  
1
2
2
6
1
1
Circuit Breaker, 600V, 200 Amp, 3 pole......................104-071819-020  
Contactors, 600V, 100 Amp, 3 pole .......................... 072-120812-003  
Fuses, FNM 1-1/8 (F1 and F2)....................................128-114696-020  
Fuses, FRN-100 (F3 thru F8) .....................................128-121133-084  
Transformer, 250VA....................................................315-048507-024  
Time Delay Relay........................................................311-115540-001  
OCC or WCC-45-223, 240V, 2-3ø, 36 kW  
1
2
2
6
1
1
Circuit Breaker, 600V, 125 Amp, 3 pole......................104-071818-045  
Contactors, 600V, 60 Amp, 3 pole..............................072-120812-002  
Fuses, FNM 8/10 (F1 and F2).....................................128-114696-012  
Fuses, FRN-60 (F3 and F8..........................................128-121133-080  
Transformer, 150VA....................................................315-048507-018  
Time Delay Relay........................................................311-115540-001  
10  
 
11  
 
Limited Warranty:  
Please refer to the Chromalox limited warranty applicable to this product at  
1347 HEIL QUAKER BLVD., LAVERGNE, TN 37086  
Phone: (615) 793-3900  
 

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