Installation Guide

nVent.com/RAYCHEM | 11
Check piping to be traced:
• Ensure all pressure testing is complete and pipework has
final paint coating.
• Walk the system and plan the routing of the heating cable on
the pipe.
• Check pipework against specification drawing. If different
consult design authority.
• Inspect piping for burrs, rough surfaces, sharp edges etc.
which could damage the heating cable. Smooth off or cover
with layers of glass cloth tape or aluminium foil.
3.3 Heating cable handling
Heating cable handling tips:
• Paint and pipe coatings must be dry to the touch before
heating cable installation.
• When pulling the heating cable, avoid:
– sharp edges
– excessive pulling force
– kinking and crushing
– walking on it, or running over it with equipment
Heating cable pulling tips:
• Use a reel holder that pays out smoothly with little tension.
• Keep heating cable strung loosely but close to the pipe
being traced to avoid interference with supports and
equipment.
• Pay out designed length and mark (i.e. with fixing tape) on
cable while still on reel.
• Leave the appropriate amount of heating cable at all power
connection, splice, tee and end seal locations.
(Refer to component installation instructions)
– Add additional heating cable to trace the fittings and
supports or for spiralling as required by the design
specifications, or consult nVent product literature for design.
• Protect all heating cable ends from moisture, contamination
and mechanical damage or other interference if left exposed
before component installation.
3.4 Heating cable attachment recommendations
• The heating cable may be installed straight, spiralled or in
multiple runs as required by the design specification, nVent
product literature or TraceCalc software.
– Do not use metal attachments, vinyl electrical tape or duct
tape as heating cable damage may result.
– Self-Regulating technology allows for the multiple
overlapping of the heating cable on to itself.