6
General Information
Use of Manual
These instructions are to be followed when installing Chro-
malox heating cables on pipes in ordinary locations. Consult
factory for installation of braided cable in hazardous loca-
tions. This manual discusses the installation of two types of
heating cables: parallel cables (SRL, SRP, SRM/E) and series
cables (CWM, MI, SLL). Although they are all resistance type
cables, they have different operating characteristics. These
characteristics may make one type of cable more suitable
for a particular application than another. This manual, how-
ever, is not intended as a product selection manual. Refer
to appropriate application design guide for product selection
guidelines. A chart high-lighting certain characteristics for
Chromalox heating cables can be found on page 5.
For customer support, design assistance, or information re-
garding any other Chromalox products, please contact your
local Chromalox representative or use the information below.
Chromalox, Inc.
103 Gamma Drive
Pittsburgh, PA 15238
Tel: +1 (412) 967-3800
Fax: +1 (412) 967-5148
Email: is@chromalox.com
www.chromalox.com
Storage
The heating cables should be stored in their shipping cartons
or on reels in a dry atmosphere until they are ready to be in-
stalled. They should be stored in a clean location, where they
are protected from mechanical damage.
Storage temperature range: 0°F(-18°C) to 140°F(60°C).
Important Installation Notes
The following notes should be reviewed prior to installation.
• Always install tracing at the 4 or 8 o’clock position on a
pipe.
• Do not attempt to heat trace any piece of equipment
which will not be insulated.
• Allow a minimum of 2” between cable runs.
• Always install heat tracing on the outside radius of el-
bows.
• Never install heat tracing over expansion joints without
leaving slack in the cable.
• Pumps and small vessels should be heat traced and con-
trolled with the piping on the inflow end. The cable on the
pump or vessel should be physically separate to permit
disconnection during maintenance or removal.
• Use aluminum foil tape to cover the heating cable when-
ever the cable is not in good contact with the pipe (i.e. at
supports, valves, pumps, etc.).
• Separately controlled circuits should be provided on dead
end legs and closed bypasses.
• No heat tracing circuit should extend more than two feet
beyond a point where two or more pipes join when such
junctions permit optional flow paths. In such cases, sepa-
rately controlled traces should be used.
• The minimum installation temperature for all Chromalox
heating cables is -76˚F (-60˚C).
• Chromalox Type SRL heating cables are well suited for
heat tracing plastic pipes. Consult “Chromalox Design
Guide for Heat Tracing Products” for design recommen-
dations. Installation details apply for plastic pipe only
when Type SRL heating cable is used. Consult factory for
applications involving other products.
• Always ensure that the heating cable load is compatible
with the rating of the selected control systems.
• Only install control devices where the electrical conduit
has a low-point drain that prevents condensation from
entering the thermostat enclosure.
NOTICE
These products may be become damaged by moisture. Damage to electrical components,
electrical properties, corrosion or other damage may occur if equipment is not stored
in a dry location. Visual inspection and electrical checks must be performed prior to
installation to ensure safety and proper operation. See equipment installation manual
or contact the factory for more information. 800-443-2640 or www.chromalox.com.
STORE IN DRY AREA
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