nVent RAYCHEM WinterGard Cable 230V Mode D'emploi page 20

During the embedding
Monitor the insulation resistance continuously during the pour.
EN
If the insulation resistance drops below 100 MΩ the heating cable may be damaged. Stop the pour immediately.
Locate the damage and repair it.
DE
After the embedding
FR
After completion of all concrete works, perform the resistance tests and record the values on the
PL Installation Test Record.
Supplementary work
CZ
Work such as drain installation, placement of anchor bolts and cutting of expansion joints is done after the initial
RU
concrete pour. Consult the drawing of the layout so that damage to the heating cable is avoided.
It is desirable to monitor the heating cable by insulation resistance testing during any activity which could lead to
NL
heating cable damage.
SV
After all such work has been completed perform the resistance tests and record the results on the Installation Test Record.
NO
Top surface installation
FI
Checks
Perform the following checks before top layer installation, paving or applying the asphalt:
• Check for signs of heating cable damage.
• Check the spacing and below-surface depth of the heating cable, if applicable.
Resistance tests
It is advisable to perform the resistance tests on all the heating circuits immediately before paving or asphalt pouring
to detect any damage which may have occurred after installation. Record the resistances of each heating circuit on
the Installation Test Record.
After the paving or asphalt pour
After completion of all top surface works, perform the resistance tests and record the values on the
Installation Test Record.
WARNING: Asphalt installation: In order not to damage the cables, heavy machinery (Rollers or asphalt laying
machines) should not be used on the cables
Drain Tracing System with Self-Regulating Heating cable GM2-XT
Purpose
The drain tracing system ensures that melt water can drain away.
Note: the drain tracing circuit should be controlled by the same control system as the other heating circuits.
Install junction box (10)
Choose a position:
• close to the drain
• indoors if possible.
Install connection kit (15)
Terminate the GM2-XT heating cable into the junction box in accordance with the instructions provided with the
connection kit.
Lay out the heating cable (14)
Protect the heating cable with conduit between the junction box and the drain. Trace the entire length of the drain to
ensure that melt water will always have a drain-off path.
Install the end seal (13)
GM2-XT can be cut to length. Install the end seal following the instructions provided with the End Seal kit.
Perform an insulation resistance test
The insulation resistance test detects damage to the heating cable such as cuts or punctures. It should be carried
out using a 2500 Vdc instrument. Lower voltage instruments are less sensitive and are not recommended. The
instrument should have a test voltage of not less than 500 Vdc.
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20 nVent.com/RAYCHEM