nVent RAYCHEM WinterGard Cable 230V Mode D'emploi page 11

WINTERGARD CABLE
General
IMPORTANT: All the instructions provided in this manual must be followed carefully to ensure that the heating
system operates correctly. The installation must also be compliant with local electrical heating system requirements.
WARNINGS: The nVent RAYCHEM WinterGard Cable is an electrical device which must be designed and installed
correctly. Follow all design, installation, test and operating instructions to ensure proper operation and to prevent
electrical or fire hazard. De-energize all power circuits before installation or servicing.
• Keep ends of trace heaters and kit components dry before and during installation.
• The drain wire shall be connected to an earth terminal.
• The presence of a trace heating shall be made evident by the posting of caution signs or marking where clearly visible.
SCOPE: This manual focuses on the installation of the WinterGard Cable in screed and sand for long-term structural
stability. nVent can supply a different series of suitable products for laying in screed/concrete, asphalt or other applications.
WinterGard Cable Heating System (1)
The WinterGard heating cable is a constant wattage
heating device for a permanent installation in concrete,
screed or sand under paving slabs or in asphalt.
It is a 230 VAC or 400 VAC system regulated by a control
unit. (Control unit provided separately.)
WinterGard Cable is a pre-terminated and ready to install
heating cable with 1 cold lead connection and a power
output of 30 W/m of heating cable. The cold lead cable
has a length of 5 m and should be installed in a conduit.
The minimum cable spacing is 10 cm. With 10 cm spacing
the power output will be approx. 300 W/m².
Spacer, junction box (6) and supply lead (9)
The plastics fixing strips (VIA-Strips-PL) maintain the correct spacing of 10-12 cm. For asphalt the metal spacer
should be used.
Extension of the cold leads can be made via a junction box. The connection between the control panel and the
junction box is made by a suitable supply lead.
For installation in asphalt the sensor cables must be protected by a suitable conduit pipe (suitable to 240°C short
terms) or be laid under the asphalt layer in the substrate underneath. The conduit pipe is sealed at the end so the
asphalt cannot seep in.
Ensure that the heating cable and cold lead cable connections (splice joint) are completely enveloped (Ø30 cm) by
the asphalt (allow asphalt to cool to temperature of approx 100°C before pouring it over the splice joint and end seal)
and without air pockets. This work needs to be done before the asphalt pouring of the entire surface will be executed.
Controller (8)
nVent offers control units specially designed for ramp heating applications. They incorporate combined temperature
and moisture sensors to ensure efficient operation of the system.
Panels (7)
nVent offers a range of standard panels specifically designed for ramp heating applications. Each panel contains a
built in control unit, plus circuit breakers and a residual current device (RCD).
Additional Items
Conduits (4, 5)
Conduits (not included) are required to protect the
• cold lead
• sensor connection lead.
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