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6
Thermal insulaTion anD marking
6.1 pre-insulation checks
Visually inspect the heating cable and components for correct
installation and possible damage. (See Section 10 if damaged.)
Insulation resistance testing (as per Section 8) is strongly
recommended prior to covering the pipe with thermal insulation.
Discharge cable immediately after insulation test.
6.2 insulation related requirements
Correct temperature maintenance requires properly installed and
dry thermal insulation.
The sheath temperature of an MI heating cable can be
substantially above the temperature of the pipe/equipment to be
traced. Verify that the max. sheath temperature of the heating
cable is compatible with the insulations materials to be used.
Contact your Pentair Thermal Management representative if you
have any questions.
Check that all pipes, including fittings, wall penetrations and
other areas are completely insulated.
Thermally insulate and weatherproof to design specification.
Ensure that heating cable is not damaged during installation
of cladding by drills, self tapping screws and sharp edges of
cladding etc.
In all stabilized design cases, the characteristics of the installed
thermal insulation (material and thickness) must comply
with the design requirements and be verified and confirmed
in the documentation, to ensure compliance with approvals
requirements.
Make sure, that under no circumstances any insulation material
is being placed between heated surface and cable, thus disabling
intended heat flow to the substrate, which may result in possible
overheating of the cable.
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