ELEKTRA SelfTec 16 User manual

SelfTec 16
®
ELEKTRA
• Self-regulating
heating cables
RU
Instrukcja montażu PL
Installation manual UK
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www.elektra.eu

Application
ELEKTRA SelfTec 16 heating cables are intended
for the antifrost protection of:
• pipeline systems,
• sprinkler systems,
• drain pipes for condensate outlets in domestic
air conditioning and ventilation systems,
• actuators,
as well as for the protection against snow and
ice of:
• gutters,
• downpipes,
• roof drains.
®
3
UK
Characteristics
self-regulating heating cables
increase their heating power when the tempe-
rature of the heated system drops and
adequately decrease it when the temperature
increases.
Change of power only occurs in these places
where ambient temperature changes. Self-
regulating heating cables with no danger of
spot overheating.
ELEKTRA SelfTec 16
®

tin-coated multi-wire copper conductor
self-regulating conductive core
modified polyolefin insulation
PET covered aluminum foil shield
tinned copper braiding
UV resistant halogene-free outer sheath
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3
4
5
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654321
SelfTec 16
®
ELEKTRA
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Construction of the
ELEKTRA SelfTec 16
®
Technical parameters:
• power output (+10°C) 16 W/m
• power supply voltage 230V 50/60 Hz
• external dimensions of the cable ~6x9 mm
• min. installation temperature -25°C
• max. working temperature: +65°C
• max. exposure temperature +65°C
• min. cable bending radius 3.5D
• IP rating IPX7
• max. protection type C 16A
~

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ELEKTRA SelfTec 16 heating cables are available
on spools, terminated with a heat shrink cap to
protect the cable against moisture.
After a cable segment has been cut off, the cable
remaining on the spool also needs to be secured
with a heat-shrink cap. The cables need to be
terminated and connected to the power supply
conductor. For this purpose, the EC-PRO and
ECM25-PRO joint sets have to be applied
(installation manuals included in the sets).
Due to their properties, ELEKTRA SelfTec 16 can
touch or cross and they are not prone to local
overheating. A significant advantage is the
possibility to cut the cables into segments of
required length. However, it is recommended not
to exceed the max. permissible heating circuit
length, as shown in Table 1.
®
®
min. switch-on
temperature
max. circuit length [m]
10A 16A
SelfTec 16
®
type C circuit breaker
-20°C
-15°C
0°C
+10°C
+10°C
in water
0°C
in ice
water
Table 1
55 75
60 80
70 90
80 100
55 60
40 55

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SelfTec 16
®
ELEKTRA
SelfTec 16 heating cable
®
Selection
Pipeline systems, sprinkler systems,
etc.
Length of the heating cables depends from:
• pipe’s diameter,
• min. ambient temperature
on the installation site.

spiralling ratio
7
½
Pipe’s diameter [inches]
¾111½ 2
1111 11
000000
1111 11
0000 00
1 1 1 1.1 1.2 1.5
000292317
1 1 1 1.3 1.4 1.7
000161514
1 1.1 1.3 1.6 1.8 2.2
0 18.5 12.5 10.5 10 9.5
-10
-15
-20
-25
-30
Ambient temperature [°C]
Table 2 Length of the heating cable per 1 m
of the heated pipe
Value 1 in the length indicator signifies parallel
positioning of the cable along the pipe. Values
higher than 1 signify the length of the heating
cable per 1 m of heated pipe. In this case, the
cable should be spiralled along the pipe.
length
[m]
spiralling
ratio [cm]
length
[m]
spiralling
ratio [cm]
length
[m]
spiralling
ratio [cm]
length
[m]
spiralling
ratio [cm]
length
[m]
spiralling
ratio [cm]

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SelfTec 16
®
ELEKTRA
Heated pipeline systems, sprinkler systems,
etc., must be insulated.
The thickness of thermal insulation layer
must be minimum 10 mm for pipes up
to 1 in. diameter, and at least 15 mm
for pipes up to 2 in. diameter.
Note:
Gutters, downpipes
Selection of the adequate length of the heating
cables depends from:
installation site.
• min. ambient temperature in the area
of the
Number of segments
of the heating cable
Below -5°C
gutters
downpipes
Above -5°C
Min. ambient
temperature
[°C]
1
1
2
1 or 2*
* if the building is located in the regions
of intense snowfall
The values are given for gutters of diameters
Ø100-125 mm.

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Examples of installation in gutters
and downpipes
Single-led installation
in a gutter or downpipe
Double-led installation
in a gutter with single-led
installation in a downpipe
Double-led installation
in a gutter and downpipe

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SelfTec 16
®
ELEKTRA
Materials
required for the installation of heating cables
• ELEKTRA SelfTec 16 heating cable,
• ELEKTRA EC-PRO cold lead connection
and end seal kit or
• ELEKTRA ECM25-PRO termination and joint set
with M25 gland for installation in the power
supply junction box,
• ELEKTRA KF 0404-PRO power supply junction
box,
• self-adhesive installation tape (available as an
accessory),
• self-adhesive aluminum foil min. 0.06 mm
thick, approx. 50 mm wide (available as an
accessory),
• thermal insulation for pipes.
required for the installation of heating cables
• ELEKTRA SelfTec 16 heating cable,
• ELEKTRA EC-PRO cold lead connection
and end seal kit or
• ELEKTRA ECM25-PRO termination
and joint set with M25 gland for installation
in the power supply junction box,
• ELEKTRA KF 0404-PRO power supply
junction box,
on pipes and pipelines:
in gutters and downpipes:
®
®

Installation on the pipe
• The relevant ELEKTRA SelfTec 16 heating cable
should be selected depending on spiralling
ratio (the cable should be longer and the
surplus is for the cold tail connection).
• Mount the heating cable alongside the pipeline
in its bottom part with self-adhesive instal-
lation tape fixed with the spacing of 30 cm.
If, the selected cable is longer than the heated
pipe, the cable should be installed spirally.
• For plastic pipelines, fix additionally self-adhe-
sive aluminum foil along the heating cable
to improve the temperature distribution on
®
• gutter and downpipe holders (available
as an accessory),
• support bar (available as an accessory).
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SelfTec 16
®
ELEKTRA
• After the heating
cable has been
installed on
the pipeline,
place the thermal
insulation on it.
Installation in gutters
and downpipes
Preliminary proceedings:
• measure the length of gutters and downpipes,
• assess the required heat output resulting from
• cut the proper length of the heating cable
the climate conditions in which the installation
is to be made,
taking into account the number of the cables’
segments in the gutter and downpipe.
the surface of
the pipeline.
Additionally,
the aluminum
foil will secure
the cable from
being pulled into
the thermal insulation.

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Gutter holder
GH-2
Heating cable fixing in gutters and downpipes
Gutters
Heating cables should be fixed in order to maintain
steady spacing between neighbouring cable’s seg-
ments.
Heating cables can be fixed with holders (holder
spacing should not exceed 30 cm) or a wire with
clips.
If the water from downpipes is discharged
directly to the rain channel, the segment
of the downpipe from the surface level to
the soil freezing depth als should be
heated.
Note:

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SelfTec 16
®
ELEKTRA
Gutter spacing
wire with clips
GSW-2
Cable fixing
in the gutter
with a wire
with clips
Downpipes
Single-led heating cables – do not require fixing
if the length of the heated downpipe does not
exceed 6 m.
Double-led heating cables – to be fixed with
holders (holder spacing should not exceed 40 cm)
or a wire with clips. Wire with clips are applied
when the length of the heated downpipe exceeds
6m.
Downpipe spacing wire
with clips DSW-2
Downpipe
spacing clip DSC-2

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Leading the cables
in gutters
and downpipes
1
support bar
DSW-SB-1
flexible cable
support FCS-1-SS
1
2
Protect the joining spot of the gutter and down-
pipe with a flexible cable support to prevent
possible damage to the cable.
When using the wire with clips in the downpipe,
suspend it on the support bar.
2

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SelfTec 16
®
ELEKTRA
Controls
Properly selected controls will ensure efficient and
at the same time economical operation of the
heating system. Self-regulating heating cables
always consume some amount of electric power,
even in temperatures above 0°C, therefore
application of a controller will ensure switch off
of the heating circuit, when required. Controllers
maintain the heating system on stand-by,
switching it on only when necessary.
Due to a high value of inrush current
of self-regulating heating cables, it is
recommended to provide power supply
to heating circuits through a contactor.
Note:
Controls of pipeline heating systems
ELEKTRA UTR60-PRO controller
When heating pipelines with heating cables, it is
recommended to apply temperature controllers
equipped with temperature sensors mounted on
the pipeline surfaces. The controllers below will
optimally serve this purpose:
for on support bracket mounting, load 16 A,
the maximum total power of directly connected
self-regulating heating cables is 1200 W.

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Heating cable with sensor mounted
on the pipeline
The controller is equipped
with a temperature sensor
for on-pipeline mounting,
operating within the range
of -40°C up to +120°C.
Adjustable hysteresis allows
to define precision of
temperature measurements.
for DIN bus mounting, load 16 A,
recommended total power
of directly connected
self-regulating heating cables
is 1200 W.
The controller is equipped
with a temperature sensor
for on-pipeline mounting.
ELEKTRA ETV-1991 controller
Installation of temperature sensors

Controls of gutter and downpipe heating
systems
ELEKTRA ETR2 controller
Heating system will be the most efficient and
economical when will be controlled with a device
equipped with a temperature and moisture sensor.
The system will be then switched on only when
both sensors indicate snowfall, freezing rain or
icing.
for DIN bus mounting,
load 16 A, recommended
total power of directly
connected self-regulating
heating cables is 1200 W.
Designed for smaller
heating systems,
will service one heated zone.
Factory-equipped with one temperature
and moisture sensor.
After the heating cable has been installed in the
gutter or in case of pipe installation, after thermal
insulation has been laid, perform the
measurements of the heating cable insulation's
resistance, and test-run the heating circuits to
assess the correctness and safety of the system's
operation.
Final check
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SelfTec 16
®
ELEKTRA

1919
The heating cable insulation's resistance, as
measured with an appliance of the rated voltage
1000 V (megaohmmeter), should not drop below
50 M . Enter the results into the Warranty Card.Ù
For heating systems executed on:
• pipelines or steel tanks,
• as well as those equipped with insulation
made of processed metal
• pipeline, tank or insulation layer of processed
metal and
• PE conductor/heating cable’s shield to eliminate
damage during installation works on the system,
or associated metal processing.
perform the measurements of resistance of
the layer (layer tightness) between:

Warranty
ELEKTRA grants a 3 year-long warranty
(from the date of purchase) for ELEKTRA
SelfTec 16 heating cables.
®
Warranty conditions
1. Warranty claims require:
a. that the heating system has been executed
in full accordance with the Installation
Instructions herein,
b. presentation of the proof of purchase
of the heating cable under complaint.
2. The Warranty loses validity if any attempt
at repair has been undertaken by an
unauthorised installer.
3. The Warranty does not cover the damages
inflicted as a result of:
a. mechanical fault,
b. incompatible power supply or temperature
control,
c. lack of adequate overload and differential
protection measures in electric systems
supplying heating cables,
d. discord of the domestic heating circuit
with the current regulations in force.
4. Within the Warranty herein, ELEKTRA undertakes
to bear exclusively the costs required to cover
the necessary repairs to the heating cable itself,
or to exchange the cable.
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