Danfoss DEVIreg 330 Installation Manual - Page 9

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Installation Guide

Typical installations

7.1

Typical pipe tracing installation

Fig 1

1 - Heating cable; 2 - Aluminum tape; 3 - Wire sensor; 4 - Insulation; 5 - Warning label/tape

1 Check the pipe system to be heated and

make sure that the pipes are dry, smooth and

tight Check and prepare the switch board

4 Make connection and end terminations

using only authorized accessories

7 Attach and cover the sensor and the tip on

top of the pipe with aluminum tape Extend

cold tails/leads and keep connections dry

Mount connection box on the pipe or close

to it and install the thermostat on the pipe or

near it (depends on thermostat)

DEVI

Self-limiting cables on drum

45°

90°

2 Draw a plan positioning cable(s), sensors

and thermostat, cable connections, cold tail,

connection box, cable paths and switch board

5 Straight lines and sensor must be fitted

as shown at Fig2 Twisted lines are attached

as shown for every approx1 m pipe with

aluminum tape

8 Re-check the insulation resistance Connect

cables to connection boxes and to the switch

board

AN384935621519en-010101

45°

90°

Fig 2

45°

90°

3 Check the insulation resistance of the heat-

ing cables The measured value shall be no less

than 50 MΩ

6 Apply aluminum tape below (mandatory for

plastic pipes) and on top on the whole length

of the cable Make sure that the cables do not

cross sharp edges

9 After insulation, place safety marking tape

on the insulation jacket or pipe trenches for

every 5 m In subsurface installations, a cover

ribbon with a warning sign must be laid 10 cm

above the cables