Danfoss DEVIreg 316 Manuale di installazione - Pagina 10
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Installation Guide
7.2
Typical roof protection installation
1
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
4 Make connection and end terminations
using only authorized accessories
7 Install sensors and extend sensor cables,
cold tails/terminate cables and place connec-
tions dry Seal all penetrations, eg through
roofs and walls
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)
10
Self-limiting cables on drum
2
Fig 3
2 Develop the layout plan for cable(s), sen-
sors and thermostats, cable connections/
cold tails, connection box, cable paths and a
switchboard
5 Install the connection box and fixing acces-
sories in the gutters, gutter valleys, on the roof
and/or the cable
8 Check once again and compare the insula-
tion resistance The measured value shall be
no less than 50 MΩ
AN384935621519en-010101
3
1
2
Fig 4
3 Check the insulation resistance of the heat-
ing cables The measured value shall be no less
than 50 MΩ
6 Install the cable(s) on the roof, in gutters and
downpipes Check once again and compare
the insulation resistance
9 Install thermostat/controller and connect
cables to the connection boxes and to the
switchboard
DEVI