18
Proceed as follows:
• Connect one lead to the heat strip
braid.
• Connect the other lead to both heat
strip conductors together.
• Apply voltage. The resistance reading
must be greater than 20 M
Ω
.
• If the insulation resistance is less than
this, the heat strip is damaged. Where
possible, locate the fault and rectify.
Record the insulation resistance value
on the Installation Test Record.
Braid
2500 Vdc Insulation resistance tester
Conductors
Finishing
Install a grid over the drain to ensure that
the heat strip is protected from damage.
Finishing
Complete Sensor
Complete the installation of the sensor
(where necessary).
Install panel (8)
Install the electrical panels according to
the manufacturer’s instructions.
Install Controls (9)
EN 60335-1:1994 clause 7.2.12 requires
at least one all-pole circuit breaker (mains
disconnection) with a minimum contact
gap of 3 mm. Install control units, ther-
mostats and manual control equipment
in accordance with the manufacturers’
instructions.
Complete Wiring and System (10)
Follow VDE 0100 Part 520 A3 and ap-
plicable local regulations.
Note: A 30 mA residual current de-
vice (rcd) is specifi ed for the drain
tracing. Ensure that there are no
more than 60 m of heating cable
connected to each 30 mA rcd.
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