Installation, Operation
4
DU-RAD
and
(Supersedes PG423)
PG423-1
RENEWAL PARTS IDENTIFICATION
161-057863-001
MARCH, 2004
Type DU-RAD Electric Radiant Heater
Three Elements
Dimensions (In.)
B
Total
Heated
67
C
D
End
A
Center
Heated
Model
Volts
kW
6.04
6.42
6.79
7.17
7.55
8.12
8.59
9.16
9.73
10.30
10.70
11.05
11.43
6.60
6.97
7.44
7.82
8.19
8.57
8.95
9.52
9.99
10.56
11.13
11.70
12.10
12.45
12.83
7.60
7.97
8.44
8.82
9.19
9.57
9.95
Overall
Heated
Single Element
DU-RAD-458
DU-RAD-466
DU-RAD-474
DU-RAD-482
DU-RAD-490
DU-RAD-4102
DU-RAD-4112
DU-RAD-4124
DU-RAD-4136
DU-RAD-4148
DU-RAD-4156
DU-RAD-4164
DU-RAD-4172
DU-RAD-540
DU-RAD-548
DU-RAD-558
DU-RAD-566
DU-RAD-574
DU-RAD-582
DU-RAD-590
DU-RAD-5102
DU-RAD-5112
DU-RAD-5124
DU-RAD-5136
DU-RAD-5148
DU-RAD-5156
DU-RAD-5164
DU-RAD-5172
DU-RAD-640
DU-RAD-648
DU-RAD-658
DU-RAD-666
DU-RAD-674
DU-RAD-682
DU-RAD-690
DU-RAD-6102
DU-RAD-6112
DU-RAD-6124
DU-RAD-6136
DU-RAD-6148
DU-RAD-6156
DU-RAD-6164
DU-RAD-6172
DU-RAD-740
DU-RAD-748
DU-RAD-758
DU-RAD-766
DU-RAD-774
DU-RAD-782
DU-RAD-790
DU-RAD-7102
DU-RAD-7112
DU-RAD-7124
DU-RAD-7136
DU-RAD-7148
DU-RAD-7156
DU-RAD-7164
DU-RAD-7172
757/
8
233/
8
195/
16
16
16
16
16
16
16
16
16
16
16
16
16
797/
84
881/
923/
983/
1035/
1091/
1151/
1215/
8
71
323/
361/
409/
4411/
5011/
5513/
8
195/
195/
195/
195/
195/
195/
195/
195/
195/
195/
195/
195/
263/
263/
263/
263/
263/
263/
263/
263/
263/
263/
263/
263/
263/
263/
263/
3213/
3213/
3213/
3213/
3213/
3213/
3213/
3213/
3213/
3213/
3213/
3213/
3213/
3213/
3213/
751/
8
2
Specifications – Table A
16
16
16
16
791/
835/
895/
947/
1005/
1065/
1123/
11613/
12015/
1251/
723/
763/
817/
857/
90
941/
983/
1043/
1095/
1151/
8
16
16
16
16
16
16
16
Dimensions (In.)
208, 240,
275 or 480
B
Total
Heated
C
D
End
Heated
A
Center
Heated
2
8
62
68
Model
Volts
kW
Overall
2
8
One Double-Hairpin Element Models
8
4
741/
8
DU-RAD-040
DU-RAD-048
DU-RAD-058
DU-RAD-066
DU-RAD-074
DU-RAD-082
DU-RAD-090
DU-RAD-0102
DU-RAD-0112
DU-RAD-0124
DU-RAD-0136
DU-RAD-0148
DU-RAD-0156
DU-RAD-0164
DU-RAD-0172
120, 208
240 or 275
120, 208
240, 275
or 480
1.60
1.97
2.44
2.82
3.19
3.57
3.95
4.52
4.99
5.56
6.13
6.70
7.10
7.45
7.83
203/
2325/
287/
331/
371/
411/
453/
517/
563/
621/
689/
751/
7813/
8211/
87
8
1815/
2225/
2725/
3125/
3525/
397/
437/
497/
547/
6015/
6615/
7215/
16
32
32
32
32
12511/
16
16
16
783/
825/
861/
191/
231/
283/
323/
361/
409/
4411/
16
32
12913/
134
16
16
8
8
2
4
208, 240
or 275
815/
8
4
4
4
4
855/
903/
943/
987/
10215/
1071/
1131/
1183/
1243/
1303/
8
4
4
4
8
8
4
8
8
4
208,
240,
275
or
16
8
4
8
8
4
8
8
8
2
4
16
8
16
16
16
16
16
16
16
16
16
16
16
16
4
2
16
16
16
4
16
208, 240,
275 or 480
5011/
4
2
5513/
62
4
16
16
77
81
8
2
4
8
1211/
2
68
4
851/
16
480
1361/
2
1275/
13111
13513
140
8
741/
8
4
1409/
14411
16
/
/
16
16
783/
825/
861/
191/
231/
283/
323/
361/
409/
4411/
5011/
5513/
16
4
Three Hairpin Element Models
443/
483/
537/
577/
62
661/
703/
769/
815/
871/
931/
995/
DU-RAD-240
DU-RAD-248
DU-RAD-258
DU-RAD-266
DU-RAD-274
DU-RAD-282
DU-RAD-290
DU-RAD-2102
DU-RAD-2112
DU-RAD-2124
DU-RAD-2136
DU-RAD-2148
DU-RAD-2156
DU-RAD-2164
DU-RAD-2172
DU-RAD-340
DU-RAD-348
DU-RAD-358
DU-RAD-366
DU-RAD-374
DU-RAD-382
DU-RAD-390
DU-RAD-3102
DU-RAD-3112
DU-RAD-3124
DU-RAD-3136
DU-RAD-3148
DU-RAD-3156
DU-RAD-3164
DU-RAD-3172
DU-RAD-440
DU-RAD-448
3.20
3.57
4.04
4.42
4.79
5.17
5.55
6.12
6.59
7.16
7.73
8.30
8.70
9.05
9.43
3.80
4.17
4.64
5.02
5.39
5.77
6.15
6.72
7.19
7.76
8.33
8.90
9.30
9.65
10.03
5.20
5.57
4
357/
8
191/
231/
283/
323/
361/
409/
4411/
5011/
5513/
4
85/
85/
85/
85/
85/
85/
85/
85/
85/
85/
85/
85/
85/
85/
85/
117/
117/
117/
117/
117/
117/
117/
117/
117/
117/
117/
117/
117/
117/
117/
195/
195/
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
/
8
16
16
4
1487/
2
4
4
397/
45
8
4
120, 208
240 or 275
208, 240
or 275
933/
973/
4
847/
8
4
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
8
8
4
887/
8
4
8
49
8
1027/
8
94
98
8
531/
8
2
1067/
111
8
8
16
16
16
16
573/
615/
675/
727/
785/
845/
903/
9413/
9815/
1031/
421/
461/
511/
551/
593/
637/
679/
739/
7811/
847/
907/
97
1013/
1053/
1093/
577/
617/
16
16
16
16
16
16
16
16
1021/
8
2
1151/
16
16
16
16
1063/
1105/
1165/
1217/
1275/
16
16
16
16
16
16
16
16
1193/
1253/
1305/
1361/
1421/
208, 240,
275 or 480
10.52
10.99
11.56
12.13
12.70
13.10
13.45
13.83
8.80
208, 240
or 275
2
8
62
68
2
8
8
4
741/
8
2
8
62
68
1335/
8
10311/
16
16
16
783/
825/
861/
191/
231/
283/
323/
361/
409/
4411/
16
2
1485/
8
1393/
14313
14715
4
741/
8
10713/
112
51
16
16
15211
15613
161
/
/
16
/
/
16
783/
825/
861/
191/
231/
283/
323/
361/
409/
4411/
16
8
2
16
16
16
8
4
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
1521/
8
2
55
8
4
120, 208
240 or 275
971/
1011/
1061/
1101/
1143/
1187/
8
4
3815
3815
3815
3815
3815
3815
3815
3815
3815
3815
3815
3815
3815
3815
3815
/
/
/
/
601/
8
4
8
208, 240
or 275
106
641/
681/
725/
767/
827/
879/
933/
993/
1057/
10915/
1141/
1181/
663/
703/
8
4
8
9.17
9.64
110
8
4
1151/
8
4
8
4
8
2
10.02
10.39
10.77
11.15
11.72
12.19
12.76
13.33
13.90
14.30
14.65
15.03
1191/
1231/
1275/
1317/
1377/
1429/
1483/
1543/
1607/
16415
1691/
1731/
8
4
8
16
16
16
16
16
16
16
16
16
16
16
16
4
8
2
/
/
/
/
5011/
16
16
16
16
16
16
16
16
16
16
16
16
1229/
5513/
62
208, 240,
275 or 480
1289/
13311
5011/
4
8
/
5513/
62
/
/
/
/
/
/
/
208, 240
or 275
4
8
68
1397/
8
8
741/
8
4
1457/
152
8
68
16
16
16
16
783/
825/
861/
191/
231/
16
4
8
741/
8
16
/
16
16
1561/
16
783/
825/
861/
16
4
8
2
1603/
1643/
16
16
4
8
4
4
8
2
4
8
4
© 2010 Chromalox, Inc.
WIRING
7. CENTER ELEMENT TERMINAL ASSEMBLY
Assemble center terminal, washers, nut and wire as shown in
Figure 6. Hold terminal with pliers and tighten the terminal nut
securely with a wrench.
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 by a qualified person
in accordance with the National Electrical Code,
NFPA 70.
ELECTRIC SHOCK HAZARD. Any installation involv-
ing electric heaters must be performed by a quali-
fied person and must be effectively grounded in
accordance with the National Electrical Code to
eliminate shock hazard.
1. The power supply voltage should be the voltage as specified on the
heater nameplate located on the heater housing.
2. Wiring should be run in flexible or rigid metal conduit and must be
installed in accordance with the requirements of the National
Electrical Code and such other local requirements as may be
applicable. Note: High temperatures will oxidize copper. Do not
use copper wire in connecting this heater. Nickel-plated copper
wire, insulated in accordance with requirements for temperature
and voltage is recommended.
Figure 6 — Center Element Terminal Assembly
CAUTION: Terminal clip is spot-welded to element terminal pin
and over-tightening terminal screw may break the weld or shear
off terminal pin. However, either the screw or nut should be suffi-
ciently tightened to eliminate arcing.
8. SERIES CONNECTION of Radiant Heaters of equal volt and
watt rating is permitted in all line voltages up to 600 volts. In mak-
ing such series connections it is necessary to observe the “right”
(series-parallel) connection rather than the “wrong” (parallel-
series) connection both shown in Figure 7. If heaters are connect-
ed according to the “wrong” illustration, failure of any heater will
cause progressive failure of other heaters still operating.
3. A sufficient length of this wire (not less than 12”) should be used
to extend from each heater terminal into a connection box location
where the temperature does not exceed 300˚F.
4. ELECTRICAL CONNECTIONS —
A. End Elements
Electrical connection to the heater end elements is made
through the 7/8” dia. opening in the end of the terminal cover
of the element assembly. A 1/2” flexible conduit connector is
provided with each element assembly for this purpose.
B. Center Elements
Wrong
Right
Radiant
Heaters
Electrical connection to the heater center element is made
through the 7/8” dia. opening in the 4” octagon conduit box for
the element assembly. A 1/2” flexible conduit connector is pro-
vided with each element assembly for this purpose.
5. ACCESS TO TERMINALS
L1
L2
L1
L2
A. End Elements
Figure 7
Access to the end element terminals is obtained by removing
the mounting bolt, nut and spacer (see Figure 9, items 9, 16 and
18) and sliding the terminal end of the element assembly out of
the housing.
9. DELTA CONNECTIONS — When heaters occur in multiples of
three, they may be connected to, and balanced across, three-phase
lines. The most commonly used connection is the delta connection
illustrated in Figure 8.
B. Center Elements
Access to the center mounted element terminals is obtained by
removing the terminal box cover.
6. END ELEMENT TERMINALASSEMBLY
Assemble end terminal, screw and wire as shown in Figure 5. Hold
terminal with pliers and tighten the terminal screw securely with a
screwdriver.
Wrong
Right
Radiant
Heaters
L1
L2
L1
L2
Figure 8
Three phase Delta connections to minimize inductive effect in
conduits are made per this diagram. The rule: run all 3 three-phase
conductors in the same conduit as far as possible. For single-phase,
run only two conductors and follow the same rule.
Figure 5 — End Element Terminal Assembly
3
OPERATION
enclose the heaters in order to increase the ambient. If evaporation
CAUTION: For your own safety —
of a liquid is desired as a result of increasing work temperature, it
is necessary to provide ventilation air in order to carry away the
evaporated liquid. Under carefully engineered circumstances, a
maximum work temperature of 600°F may be attained.
Before energizing this heater:
1. Be sure all electrical connections are tightly made.
2. Be sure that all conductors are properly insulated.
3. Be sure that terminal box cover has been properly replaced, and
that secondary insulation bushings have not been omitted.
Low Megohm Condition — The refractory material used in
electric heaters may absorb moisture during transit, storage or
when subject to humid environments that will reduce the cold
insulation resistance (low megohm). Low megohm may result in a
high leakage current to ground and nuisance trips of ground fault
protection equipment. Normally, the megohm value increases after
heat-up. Typical insulation values are 5 megohm or greater on
complete assemblies or 20 megohm on individual unsealed ele-
ments. It is recommended that heaters with 1 megohm or less be
dried out before applying full power. If dried properly, low
megohm will not effect heater life or efficiency.
To correct a low megohm condition, remove terminal enclo-
sure cover, gaskets, and terminal hardware. Bake heaters in an
oven at 300 to 350˚F for several hours or preferably overnight.
An alternate procedure is to cycle the heater in 10 to 15
minute periods at low voltage until megohm values are normal.
Sheath temperatures should not exceed 350˚F.
Controlling Radiant Intensity —
Standard Radiant Heaters are built to operate at 40 watts per
sq. inch on the element sheath. When it is desired to reduce radi-
ant intensity, one or more of the following methods may be used.
1. INPUT CONTROLLERS. These motor-driven cycling devices
can be used to vary heater output capacity from 4 to 100%. They
are usually connected in holding coil circuit of magnetic contac-
tors. See Chromalox Radiant Heater Manual for further informa-
tion regarding Input Controllers and Contactors.
2. SOLID STATE THYRISTOR POWER CONTROLLERS.
For best non-contact control of radiant heat, a Series #6 Chromalox
Thyristor Power Controller with manual potentiometer setting is
recommended. Truly proportional output of from 0 – 100% can be
easily dialed-in to suit the particular product or process require-
ments. The Series #6 panels are pre-engineered, pre-packaged
assemblies in an enclosure with circuit disconnect provided and
ready for installation.
Note: Low megohm on heating elements with epoxy or her-
metic seals cannot be serviced in the field. Typical resistance val-
ues when sealed are 200 megohm or greater. Contact Chromalox
service center at number listed.
Maximum Ambient Temperatures —
Chromalox Radiant Heaters are not recommended for appli-
cations in ambient temperatures exceeding 450°F. Higher ambient
temperatures mean shorter heater life.
Maximum work temperature in a given time depends on sev-
eral factors: Reflectivity of work, specific heat of work, mass of
work, kW input and losses from oven, and time of exposure. As
work temperature increases, the work loses heat by radiation and
by convection to the surrounding ambient. Although it is a gener-
al principle of a Radiant Heater application that work temperature
conventionally exceeds ambient temperature, in cases where
extremely high work temperatures are desired, it is necessary to
FIRE OR SHOCK HAZARD. Moisture accumulation
in the element refractory material, element over-
temperature or sheath corrosion can cause ground
fault to the element sheath, generating arcing and
molten metal. Install Ground Fault Protection to
prevent property damage.
MAINTENANCE
D. Remove secondary insulation bushings 23 .
E. Unclip element support clips 12 from housing. (See Fig. 10)
F. Lift out element.
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 by a qualified person
in accordance with the National Electrical Code,
NFPA 70.
G. Remove element support clips 12 , bushing retaining clip 14
and insulating bushings 13 from element.
To Install Element —
Observe instructions for removing element and proceed in
reverse order. Be sure to replace secondary insulating bushings.
To Remove Heating Element —
1. End Elements
Care of Reflectors —
Reflectors should be cleaned periodically. A mild soap and
water solution or fine cleaning powder is best although more dras-
tic means may be required if reflectors are badly soiled by chemi-
cal or other deposits. The reflector is aluminum. DO NOT use
alkali cleaners since alkalies will dull reflector. Mild non-alkaline
cleaners, such as used for scouring kitchen sinks, may be used.
Reflectors are replaceable and may be purchased from Chromalox.
A. Remove element assembly mounting nut and bolt 18 and 16
and element support clips (see Figure 9) and slide element
assembly out of housing.
B. Disconnect heating element from electrical leads at both ends.
C. Remove screws from porcelain terminal blocks.
D. Remove element support clips and secondary insulating bush-
ings.
E. Lift out element.
2. Center Elements
A. Remove terminal box cover.
B. Disconnect heating element from electrical leads and remove
all hardware from terminals.
C. Remove screws 24 from secondary insulator retaining brack-
et and remove bracket 22 .
4
RENEWAL PARTS IDENTIFICATION
Terminal Box
Cover
Element
Support
Clip
Assembly
Figure 10 — Center Element
PARTS COMMON TO ALL DU-RAD HEATERS
5
6
Terminal Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .303-014316-001
Terminal Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .303-014317-001
Terminal Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .080-016868-001
Bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .027-016372-001
7
Figure 9 — End Element
8
9
Spacer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .032-075525-012
1
10
/2” Flexible Conduit Connector and Locknut . . . . . . . . . . . . .119-075454-005
& 200-075482-002
11 Terminal Screw . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .248-046044-002 (4)
12 Element Support Clip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .059-014304-002
13 Insulating Bushing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .032-013454-001
14 Bushing Retaining Clip . . . . . . . . . . . . . . . . . . . . . . . . . . . . .059-017175-001
Note: To order specify quantity, Model Number, Volts, kW.
15 Mounting Clamp Parts Bag - For mounting heaters with overall length less
than 741/2”, use Parts Bag 162-013071-001. For heaters with 741/2” or larger
overall length, use two Parts Bags 168-013071-001.
PARTS COMMON TO ALL DU-RAD HEATERS
4
Reflector (center) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .234-114406-001
20 #10-32 Nut (4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .200-075520-067
21 Cup Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .328-075560-002
22 Bushing retaining bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . .027-018140-001
23 Insulating bushing (2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .162-017459-001
MISCELLANEOUS HARDWARE
16 #8-32 Nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .200-075520-064
17 #8-32 x 13/4” Screws . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .248-075512-194
18 #8-32 x 1” Screws . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .248-075512-185
19 #8 Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .328-075528-020
29 Saddle Clamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .238-026539-001 (4)
24 #10-32 x 3/
8
lg. Screw (2) . . . . . . . . . . . . . . . . . . . . . . . . . . . .248-075414-093
25 #10 Flat Washer (2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .328-075528-036
5
WIRING
Welded Retaining Rings
Figure 11 — Type UTU Single Hairpin
Table C –
Figure 12 — Type UTU Double Hairpin
Table B –
Type UTU – Single Hairpin Elements
Type UTU – Double Hairpin Elements
1
Basic
Element
Model*
28
Volts
kW
Model
Volts
kW
Model
3
Aluminum
Housing
Model
kW
Reflector
120 or 240
208 or 275
120 or 240
208 or 275
208 or 275
240 or 480
208 or 275
240 or 480
208 or 275
240 or 480
208 or 275
240 or 480
0.8
0.8
1.1
1.1
1.8
1.8
2.5
2.5
3.0
3.0
3.6
3.6
UTU-2
UTU-2V
UTU-3
UTU-3V
UTU-4V
UTU-4
UTU-5V
UTU-5
UTU-6V
UTU-6
UTU-7V
UTU-7
120 or 240
208 or 275
120 or 240
208 or 275
120, 240 or 480
208 or 275
120, 240 or 480
208 or 275
120, 240 or 480
208 or 275
208 or 275
240 or 480
208 or 275
240 or 480
208 or 275
240 or 480
208 or 275
240 or 480
208 or 275
240 or 480
208 or 275
240 or 480
208 or 275
240 or 480
1.6
1.6
1.97
1.97
2.44
2.44
2.82
2.82
3.19
3.19
3.57
3.57
3.95
3.95
4.52
4.52
4.99
4.99
5.56
5.56
6.13
6.13
6.7
6.7
UTU-40
UTU-40V
UTU-48
UTU-48V
UTU-58
UTU-58V
UTU-66
UTU-66V
UTU-74
UTU-74V
UTU-82V
UTU-82
UTU-90V
UTU-90
UTU-102V
UTU-102
UTU-112V
UTU-112
UTU-124V
UTU-124
UTU-136V
UTU-136
Single Element Models
DU-RAD-040
DU-RAD-048
DU-RAD-058
DU-RAD-066
DU-RAD-074
DU-RAD-082
DU-RAD-090
1.60
1.97
2.44
2.82
3.19
3.57
3.95
UTU-40
UTU-48
UTU-58
UTU-66
UTU-74
UTU-82
UTU-90
234-013411-067 (2)
152-114962-001
152-114962-002
152-114962-003
152-114962-004
152-114962-005
152-114962-006
152-114962-007
152-114962-008
152-114962-009
152-114962-010
152-114962-011
152-114962-012
152-114962-013
152-114962-014
152-114962-015
234-013411-068 (2)
234-013411-069 (2)
234-013411-070 (2)
234-013411-071 (2)
234-013411-072 (2)
234-013411-073 (2)
DU-RAD-0102 4.52
DU-RAD-0112 4.99
DU-RAD-0124 5.56
DU-RAD-0136 6.13
DU-RAD-0148 6.70
DU-RAD-0156 7.10
DU-RAD-0164 7.45
DU-RAD-0172 7.83
UTU-102
UTU-112
UTU-124
UTU-136
UTU-148
UTU-156
UTU-164
UTU-172
234-013411-074 (2)
234-013411-075 (2)
234-013411-076 (2)
234-013411-077 (2)
234-013411-078 (2)
234-013411-079 (2)
234-013411-080 (2)
234-013411-081 (2)
*This is basic Model Number. See Table B or Table C for variation in element model number
depending upon voltage.
UTU-148V
UTU-148
208 or 275
240 or 480
7.1
7.1
UTU-156V
UTU-156
208 or 275
240 or 480
7.45
7.45
UTU-164V
UTU-164
208 or 275
240 or 480
7.83
7.83
UTU-172V
UTU-172
1
2
End
Only
1
2
End
Only
Center
Only
Center
Only
28
28
Total
kW
Element
Model*
Element
Model*
3
Aluminum
Housing
Total
kW
Element
Model*
Element
Model*
3
Aluminum
Housing
Model
Reflector
Model
Reflector
Three Element Models
Three Element Models
DU-RAD-240
DU-RAD-248
DU-RAD-258
DU-RAD-266
DU-RAD-274
DU-RAD-282
DU-RAD-290
3.20
3.57
4.04
4.42
4.79
5.17
5.55
UTU-40
UTU-48
UTU-58
UTU-66
UTU-74
UTU-82
UTU-90
UTU-102
UTU-112
UTU-124
UTU-136
UTU-148
UTU-156
UTU-164
UTU-172
UTU-2
UTU-2
UTU-2
UTU-2
UTU-2
UTU-2
UTU-2
UTU-2
UTU-2
UTU-2
UTU-2
UTU-2
UTU-2
UTU-2
UTU-2
234-016383-013 (2) 152-017463-001
234-016383-014 (2) 152-017463-002
234-016383-016 (2) 152-017463-004
234-016383-018 (2) 152-017463-006
234-016383-020 (2) 152-017463-008
234-016383-022 (2) 152-017463-010
234-016383-025 (2) 152-017463-013
234-016383-029 (2) 152-017463-017
234-016383-032 (2) 152-017463-019
234-016383-036 (2) 152-017463-023
234-016383-042 (2) 152-017463-027
234-016383-047 (2) 152-017463-032
234-016383-041 (2) 152-017463-035
234-016383-056 (2) 152-017463-038
234-016383-061 (2) 152-017463-042
DU-RAD-340
DU-RAD-348
DU-RAD-358
DU-RAD-366
DU-RAD-374
DU-RAD-382
DU-RAD-390
3.80
4.17
4.64
5.02
5.39
5.77
6.15
UTU-40
UTU-48
UTU-58
UTU-66
UTU-74
UTU-82
UTU-90
UTU-102
UTU-112
UTU-124
UTU-136
UTU-148
UTU-156
UTU-164
UTU-3
UTU-3
UTU-3
UTU-3
UTU-3
UTU-3
UTU-3
UTU-3
UTU-3
UTU-3
UTU-3
UTU-3
UTU-3
UTU-3
UTU-3
234-016383-015 (2) 152-017463-003
234-016383-017 (2) 152-017463-005
234-016383-019 (2) 152-017463-007
234-016383-021 (2) 152-017463-009
234-016383-024 (2) 152-017463-012
234-016383-027 (2) 152-017463-015
234-016383-030 (2) 152-017463-017
234-016383-005 (2) 152-017463-020
234-016383-036 (2) 152-017463-023
234-016383-042 (2) 152-017463-027
234-016383-048 (2) 152-017463-032
234-016383-052 (2) 152-017463-036
234-016383-058 (2) 152-017463-040
234-016383-063 (2) 152-017463-044
234-016383-067 (2) 152-017463-047
DU-RAD-2102 6.12
DU-RAD-2112 6.59
DU-RAD-2124 7.16
DU-RAD-2136 7.73
DU-RAD-2148 8.30
DU-RAD-2156 8.70
DU-RAD-2164 9.05
DU-RAD-2172 9.43
DU-RAD-3102 6.72
DU-RAD-3112 7.19
DU-RAD-3124 7.76
DU-RAD-3136 8.33
DU-RAD-3148 8.90
DU-RAD-3156 9.30
DU-RAD-3164 9.65
DU-RAD-3172 10.03 UTU-172
*This is basic Model Number. See Table B or Table C for variation in element catalog number
depending upon voltage.
6
TESTING AND OPERATION
1
2
End
Only
Element
Model*
1
2
End
Only
Element
Model*
Center
Only
Element
Model*
Center
Only
Element
Model*
28
28
Total
kW
3
Aluminum
Housing
Total
kW
3
Aluminum
Housing
Model
Reflector
Model
Reflector
Three Element Models
Three Element Models
DU-RAD-440
DU-RAD-448
DU-RAD-458
DU-RAD-466
DU-RAD-474
DU-RAD-482
DU-RAD-490
5.20
5.57
6.04
6.42
6.79
7.17
7.55
UTU-40
UTU-48
UTU-58
UTU-66
UTU-74
UTU-82
UTU-90
UTU-102
UTU-112
UTU-124
UTU-136
UTU-4
UTU-4
UTU-4
UTU-4
UTU-4
UTU-4
UTU-4
UTU-4
UTU-4
UTU-4
UTU-4
UTU-4
UTU-4
UTU-4
234-016383-023 (2) 152-017463-011
234-016383-026 (2) 152-017463-014
234-016383-028 (2) 152-017463-016
234-016383-031 (2) 152-017463-018
234-016383-034 (2) 152-017463-021
234-016383-038 (2) 152-017463-024
234-016383-040 (2) 152-017463-026
234-016383-045 (2) 152-017463-030
234-016383-051 (2) 152-017463-034
234-016383-057 (2) 152-017463-039
234-016383-066 (2) 152-017463-046
234-016383-071 (2) 152-017463-049
234-016383-075 (2) 152-017463-052
234-016383-077 (2) 152-017463-054
DU-RAD-640
DU-RAD-648
DU-RAD-658
DU-RAD-666
DU-RAD-674
DU-RAD-682
DU-RAD-690
7.60
7.97
8.44
8.82
9.19
9.57
9.95
UTU-40
UTU-48
UTU-58
UTU-66
UTU-74
UTU-82
UTU-90
UTU-6
UTU-6
UTU-6
UTU-6
UTU-6
UTU-6
UTU-6
UTU-6
UTU-6
UTU-6
UTU-6
UTU-6
UTU-6
UTU-6
234-016383-042 (2) 152-017463-027
234-016383-044 (2) 152-017463-029
234-016383-049 (2) 152-017463-033
234-016383-054 (2) 152-017463-037
234-016383-060 (2) 152-017463-041
234-016383-064 (2) 152-017463-072
234-016383-070 (2) 152-017463-073
234-016383-074 (2) 152-017463-051
234-016383-078 (2) 152-017463-055
234-016383-081 (2) 152-017463-058
234-016383-085 (2) 152-017463-061
234-016383-088 (2) 152-017463-063
234-016383-091 (2) 152-017463-064
234-016383-093 (2) 152-017463-066
DU-RAD-4102 8.12
DU-RAD-4112 8.59
DU-RAD-4124 9.16
DU-RAD-4136 9.73
DU-RAD-6102 10.52 UTU-102
DU-RAD-6112 10.99 UTU-112
DU-RAD-6124 11.56 UTU-124
DU-RAD-6136 12.13 UTU-136
DU-RAD-6148 12.70 UTU-148
DU-RAD-6156 13.10 UTU-156
DU-RAD-6164 13.45 UTU-164
DU-RAD-6172 13.83 UTU-172
DU-RAD-740
DU-RAD-748
DU-RAD-758
DU-RAD-766
DU-RAD-774
DU-RAD-782
DU-RAD-790
DU-RAD-4148 10.30 UTU-148
DU-RAD-4156 10.70 UTU-156
DU-RAD-4164 11.05 UTU-164
DU-RAD-4172 11.43 UTU-172
DU-RAD-540
DU-RAD-548
DU-RAD-558
DU-RAD-566
DU-RAD-574
DU-RAD-582
DU-RAD-590
UTU-4
UTU-5
234-016383-080 (2) 152-017463-057
234-016383-033 (2) 152-017463-019
UTU-6
UTU-7
234-016383-095 (2) 152-017463-067
234-016383-053 (2) 152-017463-036
6.60
6.97
7.44
7.82
8.19
8.57
8.95
UTU-40
UTU-48
UTU-58
UTU-66
UTU-74
UTU-82
UTU-90
UTU-102
UTU-112
8.80
9.17
9.64
UTU-40
UTU-48
UTU-58
UTU-5
UTU-5
UTU-5
UTU-5
UTU-5
UTU-5
UTU-5
UTU-5
UTU-5
UTU-5
UTU-5
UTU-5
UTU-5
UTU-5
234-016383-035 (2) 152-017463-022
234-016383-039 (2) 152-017463-025
234-016383-043 (2) 152-017463-028
234-016383-046 (2) 152-017463-031
234-016383-050 (2) 152-017463-033
234-016383-055 (2) 152-017463-037
234-016383-062 (2) 152-017463-043
234-016383-067 (2) 152-017463-047
234-016383-073 (2) 152-017463-050
234-016383-078 (2) 152-017463-055
234-016383-082 (2) 152-017463-058
234-016383-084 (2) 152-017463-060
234-016383-087 (2) 152-017463-062
234-016383-089 (2) 152-017463-063
UTU-7
UTU-7
UTU-7
UTU-7
UTU-7
UTU-7
UTU-7
UTU-7
UTU-7
UTU-7
UTU-7
UTU-7
UTU-7
UTU-7
234-016383-059 (2) 152-017463-040
234-016383-065 (2) 152-017463-045
234-016383-069 (2) 152-017463-048
234-016383-072 (2) 152-017463-071
234-016383-076 (2) 152-017463-053
234-016383-079 (2) 152-017463-056
234-016383-083 (2) 152-017463-059
234-016383-085 (2) 152-017463-061
234-016383-089 (2) 152-017463-063
234-016383-092 (2) 152-017463-065
234-016383-094 (2) 152-017463-067
234-016383-096 (2) 152-017463-068
234-016383-097 (2) 152-017463-069
234-016383-098 (2) 152-017463-070
10.02 UTU-66
10.39 UTU-74
10.77 UTU-82
11.15 UTU-90
DU-RAD-5102 9.52
DU-RAD-5112 9.99
DU-RAD-7102 11.72 UTU-102
DU-RAD-7112 12.19 UTU-112
DU-RAD-7124 12.76 UTU-124
DU-RAD-7136 13.33 UTU-136
DU-RAD-7148 13.90 UTU-148
DU-RAD-7156 14.30 UTU-156
DU-RAD-7164 14.65 UTU-164
DU-RAD-7172 15.03 UTU-172
DU-RAD-5124 10.56 UTU-124
DU-RAD-5136 11.13 UTU-136
DU-RAD-5148 11.70 UTU-148
DU-RAD-5156 12.10 UTU-156
DU-RAD-5164 12.45 UTU-164
DU-RAD-5172 12.83 UTU-172
*This is basic Model Number. See Table B and C for variation in model number depending upon voltage.
Note: Part Numbers suffixed by a number in ( ) indicates the number of parts of same part number used or supplied if more than one.
7
Limited Warranty:
Please refer to the Chromalox limited warranty applicable to this product at
2150 N. RULON WHITE BLVD., OGDEN, UT 84404
Phone: 1-800-368-2493
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