AEG SLH 25/L5 ST Installation Manual page 12

Installation - for contractors
Installing the ribbon heater
note
secure the ribbon heater to the underside of the
pipe.
» Hold the ribbon heater against the pipe parallel to the
pipe run, and secure it with aluminium adhesive tape
or temperature-resistant cable ties every 20 - 30 cm.
» Cover the ribbon heater with aluminium foil along its
entire length to prevent thermal insulation material
penetrating between the ribbon heater and the sur-
face that you want to heat.
» If you are using thermal insulation with a sheet metal
jacket, use an insulation grommet to protect the rib-
bon heater from mechanical damage.
Material damage
!
Make certain that the ribbon heater's supply con-
ductors do not touch each other as this will cause
a short circuit.
» Ensure the ribbon heater is appropriately supported
in the area next to the electrical connection to pre-
vent any pulling, pushing or twisting forces being
applied to the connection.
4.4 trimming the ribbon heater and
terminator
note
use a tool that is appropriate for the cross-section
of the cable.
» Trim the ribbon heater to the required length.
» Strip the end of the ribbon heater to a length of
15 mm.
» Pull back the protective braiding.
Material damage
!
to prevent short circuiting, trim one of the two sup-
ply conductors to approx. 10 mm.
note
Do not slide the silicone cap into place without first
applying adhesive.
» Apply silicone adhesive to the supply conductors in a
wave pattern.
» Check the end cap for integrity.
12
15
10
» Drip silicone adhesive into the end cap until the cap
is around 40 % full of adhesive.
» Slide the end cap fully onto the end of the ribbon
heater.
» Carry out a visual inspection to check that the end
cap is correctly positioned on the end of the ribbon
heater and is not loose.
4.5 checks
Once you have finished with the heating circuit, carry out
the following checks before fitting the thermal insulation:
» Visually inspect the ribbon heater for any mechanical
damage.
» Repair any damage. If the heating circuit is only
short, replace the ribbon heater. If the heating circuit
is long, cut out the damaged section and use a new
section of ribbon.
note
the insulation resistance must not be below
20 Mohm.
» Measure and log the insulation resistance of the
heating circuit between each individual supply con-
ductor and the protective braiding. The test voltage
is 1000 V.
» Check the function of the heating circuit.
» Repeat the checks once the thermal insulation has
been fitted.
» Identify electrically heated systems with warning la-
bels (e.g. SLHZ stickers) positioned every 5 m.
5. operation
note
» observe local safety regulations.
» ensure compliance with the permissible oper-
ating conditions outlined in the specification
table.
~ 40%