Installation Guide
Self-limiting cables on drum
7.2
Typical roof protection installation
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2
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3
Fig 3
Fig 4
1 - Heating cable (UV protected); 2 - Fixing element; 3 -Roof sensor
1 Prepare the installation site properly by re-
moving sharp objects, leaves and mud Check
and prepare the switchboard
2 Develop the layout plan for cable(s), sen-
sors and thermostats, cable connections/
cold tails, connection box, cable paths and a
switchboard
3 Check the insulation resistance of the heat-
ing cables The measured value shall be no less
than 50 MΩ
4 Make connection and end terminations
using only authorized accessories
5 Install the connection box and fixing acces-
sories in the gutters, gutter valleys, on the roof
and/or the cable
6 Install the cable(s) on the roof, in gutters and
downpipes Check once again and compare
the insulation resistance
7 Install sensors and extend sensor cables,
cold tails/terminate cables and place connec-
tions dry Seal all penetrations, eg through
roofs and walls
8 Check once again and compare the insula-
tion resistance The measured value shall be
no less than 50 MΩ
9 Install thermostat/controller and connect
cables to the connection boxes and to the
switchboard
Persons involved in the installation and testing of electrical trace heating systems shall be suitably trained in all special tech-
niques required Installations are intended to be carried out under the supervision of a qualified person
Additional installation steps should be done according to Application Guide (
www.devi.com
)
AN384935621519en-010101 DEVI
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