Top Surface Installation; Drain Tracing System With Self-Regulating Heating Cable 8Btv2-Ct - nVent RAYCHEM EM4-CW Manuel D'installation

TOP SURFACE INSTALLATION

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.
DRAIN TRACING SYSTEM WITH SELF-REGULATING HEATING
CABLE 8BTV2-CT
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 8BTV2-CT heating cable into the
junction box in accordance with the instructions
provided with the connection kit.
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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.
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 (14)
8BTV2-CT 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.