Chromalox RAD-2063BX35 User manual

DIVISION 4 SECTION RAD
SALES
REFERENCE
DATE
SERVICE REFERENCE
Installation, Operation
and
RENEWAL PARTS IDENTIFICATION
161-048215-001
APRIL, 2005
Chromalox
PG404-10
(Supersedes PG404-9)
© 2010 Chromalox, Inc.
Volts kW
Model Overall Heated
RAD-2063BX35 120 0.4 13-5/8 7-3/4
RAD-2063BX29 120 .65 20 14-1/8
RAD-2083B 120 or 240 0.8 24-3/8 16-1/2
RAD-2083BV 208 or 275 0.8
RAD-3113B 120 or 240 1.1 30-5/8 22-3/4
RAD-3113BV 208 or 275 1.1
RAD-3133BV 208 or 275 1.3 35-7/8 28-5/16
RAD-3133B 240 or 480 1.3
RAD-4183BV 208 or 275 1.8 46-5/8 38-1/2
RAD-4183B 240 or 480 1.8
RAD-5213BV 208 or 275 2.15 53-7/8 45-7/16
RAD-5213B 240 or 480 2.15
RAD-5253BV 208 or 275 2.5 61-3/8 53-3/8
RAD-5253B 240 or 480 2.5
RAD-6273BV 208 or 275 2.7 65-7/8 58-1/4
RAD-6273B 240 or 480 2.7
RAD-6303BV 208 or 275 3.0 73-3/4 65-3/4
RAD-6303B 240 or 480 3.0
RAD-7333BV 208 or 275 3.35 79-7/8 72-1/4
RAD-7333B 240 or 480 3.35
RAD-7363BV 208 or 275 3.6 85-3/4 78
RAD-7363B 240 or 480 3.6
RAD-8453BV 208 or 275 4.5 106 97-1/2
RAD-8453B 240 or 480 4.5
Specifications Table –
The Safety Alert Symbol is used to indicate a
risk of personal injury
Familiarize yourself with these instructions before attempting
to install or operate this Radiant Heater.
The system designer is responsible for the safety
of this equipment and should install adequate
back-up controls and safety devices with their
electric heating equipment. Where the conse-
quences of failure could result in personal injury or
property damage, back-up controls are essential.
Before Installing
1. Open carton and remove heater at the place of installation.
Mounting clamps are in parts bag in carton.
2. Check nameplate volt and watt rating against your power sup-
ply voltage and heating requirements of your installation. This
nameplate is located on one end of the heater.
Length (In.)
Type RAD (Style 3B) Electric Radiant Heaters
!

INSTALLATION
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 qual-
ified person in accordance with the National
Electrical Code, NFPA 70.
1. These radiant heaters are designed for indoor installation only.
2. Clamps — Heaters are mounted by means of the mounting
clamp and 3/8” bolt assembly which is used as shown in Figure
2. Clamp assembly may be attached to heater by sliding over
end or by snapping over top of extruded frame section at any
point along its length. (See Figure 3.) For proper heater support,
the maximum distance between clamps must not exceed 48”.
On extra-long heaters, more than two clamps are furnished.
3. Mounting Holes — When heaters are mounted adjacent to
each other in the same plane, note that distance between
mounting holes on framing to support heaters will be 3-
11/16”minimum. When heaters are not in the same plane, i.e.
set at an angle to one another, distance between mounting holes
in framing will be either greater or less than 3-11/16”.
4. Framing — Where an extensive installation is being made, the
use of continuous slot metal framing manufactured by others
will be of assistance in saving time and money. The framing is
reusable.
5. R
eflector Spacer Sheets — Where heaters are not mounted side
by side (see Figure 4), reflector spacer sheets can be used between
heaters. These reflector spacer sheets and companion reflectors
consisting of an extruded aluminum housing with reflector sheets
and mounting clamps are available. Check factory.
6. Insulation — Where unusually high work temperatures are
encountered, it may be desirable to insulate backs of heaters
with high-temperature fibrous insulation. A suggested method
of accomplishing this is indicated in Figure 4.
7. Ventilation — Where solvents, water, etc. are being evaporat-
ed from work in process, it is necessary to provide substantial
quantities of ventilation air to carry away the resulting vapors.
FIRE HAZARD. Since Radiant heaters are capable
of developing high temperatures, extreme care
should be taken to:
A. Keep combustible materials at least 6” away
form sides and back of heater housing and its sup-
porting brackets and spaced far enough in front of
heater (heating element side) so thermal radiation
from the elements will not ignite combustible
materials.
B. If combustible materials are being processed,
stoppage of process should initiate immediate
heater shutdown and interception of residual heat
from radiant heaters (use radiation baffles or move
heaters away from work).
C. In the case of solvents of an explosive nature,
ventilation air must be in sufficient volume to
dilute the solvent vapor so that explosive mixtures
cannot occur, refer to NFPA 86, Standard for Ovens
and Furnaces.
2
Figure 1 — Heater Parts and Dimensions
3-11/16”
1-9/16”
Wiring Entry
One Hole Each End
1/2” 14 N P S L
Interlocking
Connector (optional)
Housing
Polished Aluminum Reflector
Element
Terminal Cover
Terminal Block
End Plate
Mounting
Clamp
Assembly
2-3/8”
1-7/8”
1/4”
Figure 2 Figure 3
3-11/16”
2-15/16”
2-3/8”
Figure 4
Mounting Frame
Insulation
Reflector
Spacer Sheet

ELECTRIC SHOCK HAZARD. Disconnect all power
before installing or servicing heater. Failure to do so
could result in personal injury or property damage.
Heater must be installed by a qualified person in accor-
dance 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. Electric connection to the Radiant Heater is made through two
openings tapped for 1/2” connector. Openings are in the top of
the extruded heater housing, one near each end.
2. Access to Radiant Heater terminals is obtained by removing
the two screws in each of the terminal box covers.
3. Wiring should 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 by
a qualified person.
4. Wires supplying power to heating element terminals shall have
insulation rated for 150˚C Minimum.
High temperatures will oxidize copper. Use only
nickel-plated copper wire for supplying power to
heater. Do not use aluminum conductors.
5. 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.
6. Leave generous loop in wire when connecting to allow for
expansion of heating element.
7. Assemble terminal, screw and wire as shown in Figure 5.
8. Hold terminal with pliers and tighten the terminal screw
securely with a screwdriver.
Note: Where circuit wiring is installed in locations of high
ambient temperature, conductors should be insulated in accor-
dance with requirements for temperature and voltage.
9. SINGLE END WIRING may be made through one of the
wiring entries by bringing a lead through it from the opposite
end of the heating element using the wire-way provided behind
integral reflector in the housing extrusion. Wire used in mak-
ing such connections must be able to operate in high ambient
and have a sufficiently high voltage rating for the specific
application. The maximum wire diameter is limited by the
wire-way and must not exceed .224” over the insulation.
10. SERIES CONNECTION of Radiant Heaters of equal volt
and watt rating is permitted in all line voltages up to 600 volts.
In making such series connections it is necessary to observe the
“right” (series-parallel) connection rather than the “wrong”
(parallel-series) connection both shown in Figure 6. If heaters
are connected according to the “wrong” illustration, failure of
any one heater will cause progressive failure of other heaters
still operating.
11. 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 7.
Three phase Delta connections to minimize inductive effect in con-
duits are made per this diagram. The rule: run all 3 three-phase con-
ductors in the same conduit as far as possible. For single-phase, run
only two conductors and follow the same rule.
WIRING
L1
L2
L1
L2
Wrong Right
Radiant
Heaters
Figure 6
L1
L2
L3
Radiant
Heaters
3 Conductors
in 1 Conduit
3 Conductors
in 1 Conduit
FEDCBA
Figure 7
3
Figure 5

MAINTENANCE
ELECTRIC SHOCK HAZARD. Disconnect all power
before installing or servicing heater. Failure to do so
could result in personal injury or property damage.
Heater must be installed by a qualified person in accor-
dance with the National Electrical Code, NFPA 70.
A. To remove Heating Element –
1. Remove terminal cover screws and terminal cover.
2. Disconnect heating element from electrical leads at both ends.
3. Remove screws from porcelain terminal blocks.
4. Remove element support clips and secondary insulating
bushings.
5. Lift element out of heater.
B. To Install Element —
Observe instructions for removing element and proceed in
reverse fashion. Be sure to replace secondary insulating bushings.
C. Care of Reflectors —
Reflectors should be cleaned periodically. A mild soap and
water solution or fine cleaning powder is best, although more
drastic means may be required if reflectors are badly soiled by
chemical 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.
4
OPERATION
FIRE/EXPLOSION HAZARD. This heater is not
intended for use in hazardous atmospheres where
flammable vapors, gases, liquids or other com-
bustible atmospheres are present as defined in the
National Electrical Code. Failure to comply can
result in personal injury or property damage.
Before energizing this heater:
1. Be sure all electrical connections are tightly made. Hold ter-
minal with pliers when tightening screw.
2. Be sure that all conductors are properly insulated, and that they
will not chafe at the heater wire entrance due to expansion and
contraction of the heating element.
3. Be sure that all terminal covers have been properly replaced,
and that secondary insulation bushings have not been omitted.
A. Controlling Radiant Intensity — Standard Radiant Heaters
are built to operate at approximately 40 watts per sq. inch on
the element sheath. When it is desired to reduce radiant inten-
sity, one or more of the following methods may be used.
i. 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 contactors. See Chromalox Radiant Heater
Manual for further information regarding Input Controllers
and Contactors.
ii. SOLID STATE POWER CONTROLLERS. For best
non-contact control of radiant heat, a Chromalox SCR
Power Controller with manual potentiometer setting is rec-
ommended. Truly proportional output of from 0-100% can
be easily dialed-in to suit the particular product or process
requirements. The panels are pre-engineered, prepackaged
assemblies in an enclosure with circuit disconnect provided
and ready for installation.
B. Maximum Ambient Temperatures –
Chromalox Radiant Heaters are not recommended for applica-
tions in ambient temperature exceeding 450˚F. Higher ambient
temperatures mean shorter heater life.
Maximum work temperature in a given time depends on sever-
al 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 radia-
tion and by convection to the surrounding ambient. Although it
is a general principle of Radiant Heater application that work
temperature conventionally exceeds ambient temperature, in
cases where extremely high work temperatures are desired, it is
necessary to enclose the heaters in order to increase the ambi-
ent. If evaporation of a liquid is desired as a result of increas-
ing 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.

RENEWAL PARTS IDENTIFICATION
Volts kW Element Reflector Insulation Element
Model Model Sheet Bushing Support Clip
RAD-2063BX35 120 400 RTU-2063AX35 234-013411-031 ————— —————
RAD-2063B 120 600 RTU-2063A-120V 234-013411-011 ————— —————
RAD-2063B 240 600 RTU-2063A-240V 234-013411-011 ————— —————
RAD-2063BX29 120 650 RTU-2063AX29 234-013411-023 ————— —————
RAD-2073B 120 700 RTU-2073A-120V 234-013411-011 ————— —————
240 RTU-2073A-240V
RAD-2083B
120
800
RTU-2083A-120V
234-013411-011 ————— —————
208 RTU-2083AV-208V
240 RTU-2083A-240V
275 RTU-2083AV-275V
RAD-3083B 120 800 RTU-3083A-120V 234-013411-012 ————— —————
240 RTU-3083A-240V
RAD-3093B 240 900 RTU-3093A-240V 234-013411-012 ————— —————
RAD-3103B 240 1000 RTU-3103A-240V 234-013411-012 ————— —————
RAD-3113B
120
1100
RTU-3113A-120V
234-013411-012 ————— —————
208 RTU-3113AV-208V
240 RTU-3113A-240V
275 RTU-3113AV-275V
RAD-3133B
208
1300
RTU-3133AV-208V
234-013411-013 ————— —————
240 RTU-3133A-240V
275 RTU-3133AV-275V
480 RTU-3133A-480V
RAD-4153B 240 1500 RTU-4153A-240V 234-013411-014 032-013454-001 (2) 059-013424-001
RAD-4163B 240 1600 RTU-4163A-240V 234-013411-014 032-013454-001 (2) 059-013424-001
RAD-4173B 240 1700 RTU-4173A-240V 234-013411-014 032-013454-001 (2) 059-013424-001
RAD-4183B
208
1800
RTU-4183AV-208V
234-013411-014 032-013454-001 (2) 059-013424-001
240 RTU-4183A-240V
275 RTU-4183AV-275V
480 RTU-4183A-480V
RAD-5213B
208
2150
RTU-5213AV-208V
234-013411-015 032-013454-001 (4) 059-013424-001 (2)
240 RTU-5213A-240V
275 RTU-5213AV-275V
480 RTU-5213A-480V
RAD-5253B
208
2500
RTU-5253AV-208V
234-013411-016 032-013454-001 (6) 059-013424-001 (3)
240 RTU-5253A-240V
275 RTU-5253AV-275V
480 RTU-5253A-480V
RAD-6273B
208
2700
RTU-6273AV-208V
234-013411-017 032-013454-001 (6) 059-013424-001 (3)
240 RTU-6273A-240V
275 RTU-6273AV-275V
480 RTU-6273A-480V
RAD-6303B
208
3000
RTU-6303AV-208V
234-013411-018 032-013454-001 (8) 059-013424-001 (4)
240 RTU-6303A-240V
275 RTU-6303AV-275V
480 RTU-6303A-480V
RAD-7333B
208
3350
RTU-7333AV-208V 234-013411-006*
032-013454-001 (8) 059-013424-001 (4)
240 RTU-7333A-240V and
275 RTU-7333AV-275V 234-013411-015*
480 RTU-7333A-480V
RAD-7363B
208
3600
RTU-7363AV-208V 234-013411-004*
032-013454-001 (10) 059-013424-001 (5)
240 RTU-7363A-240V and
275 RTU-7363AV-275V 234-013411-012*
480 RTU-7363A-480V
RAD-8453B
208
4500
RTU-8453AV-208V
234-013411-049 (2) 032-013454-001 (10) 059-013424-001 (5)
240 RTU-8453A-240V
275 RTU-8453AV-275V
480 RTU-8453A-480V
267
1
* For ease of installation, these reflectors shipped in two pieces (one each of part numbers listed).
PARTS COMMON TO ALL HEATERS
Terminal Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .306-014405-001 (2)
Terminal Cover Clip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .056-014401-002 (4)
End Plates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .220-014462-001 †
220-014462-002
Terminal Screw . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .248-046044-002
Saddle Clamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .238-026539-001 (2)
† indicates stamped end plate with voltage, wattage, etc.
NOTE: Part numbers suffixed by a number in ( ) indicates the quantity of the same part
number used.
15
3
4
5
8
5

2150 N. RULON WHITE BLVD., OGDEN, UT 84404
Phone: [phone] www.chromalox.com
RENEWAL PARTS IDENTIFICATION
13
3
8
15
12
11
1
12
4
10
9
14
5
2
7
6
Aluminum Housing
Screws —
#8 x 1” Lg. 248-075519-095 (6)
#8 x 3/8” Lg. 248-075519-080 (4)
#8-32 x 3/8” Lg. 248-075512-053 (4)
12
13
14
Terminal Blocks 303-016367-001 (2)
Speed Nuts — 272-048153-005 (4)
Terminal Block — 303-014326-001 (2)
9
10
168-016585-001 consists of the following:
Terminal Block 303-016367-001 (2)
Speed Nuts 272-048153-005 (4)
Terminal Block 303-014326-001 (2)
Screws — #8 x 1” Lg. 248-075519-095 (6)
9
10
11
12
11
See Figures 1, 2, 3 and 4, page 1.
For mounting heater with catalog numbers up to Cat. No. RAD 7000
use mounting clamp assembly Part No. 168-013071-001. For mount-
ing heaters above Cat. No. RAD 7000 use mounting clamp assembly
Part No. 168-013071-002.
NOTE: Part numbers suffixed by a number in ( ) indicates the quantity of the same part number used.
MISCELLANEOUS HARDWARE
TERMINAL BLOCK SET
MISCELLANEOUS PARTS
HEATER MOUNTING CLAMP ASSEMBLY
Limited Warranty:
Please refer to the Chromalox limited warranty applicable to this product at
http://www.chromalox.com/customer-service/policies/termsofsale.aspx.