ELEKTRA Selftec Manuale utente
www.elektra.eu
ELEKTRA
• Self-regulating
heating cables
Self Tec ®
Instrukcja montażu PL
Installation manual UK
Инструкция по монтажу RU
Application
ELEKTRA SelfTec®heating cables are intended for
the antifrost protection of:
• pipeline systems up to 50 mm in diameter,
• sprinkler systems,
• drain pipes for condensate outlets in air condi-
tioning and ventilation systems,
• actuators,
as well as for the protection against snow and ice of:
• gutters,
• downpipes,
• roof drains.
Characteristics
ELEKTRA SelfTec®self-regulating heating cables
increase their heating power when the temperatu-
re 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 are never in danger of overheating
and that is why they may touch and cross.
3
ELEKTRA
Self Tec®
Construction of the ELEKTRA SelfTec® heating cable
Technical properties
ELEKTRA SelfTec®self-regulating heating cables
are terminated at one end with a 3 metre-long
power supply conductor with a hermetic plug,
and a connecting joint at the other.
Technical parameters:
• specic heat output (at +10°C) 16 W/m
• power supply voltage 230V/~50/60 Hz
• external dimensions of the cable ~6x8 mm
• min. installation temperature -25°C
• max. exposure temperature +65°C
• min. cable bending radius 3.5D
• IP rating IPX7
• max. protection type C 10A
1 2 3 4 5 6
• tinned multi-wire copper conductor
• self-regulating conductive polymer
• modied polyolen insulation
• PET covered aluminum foil shield
• tinned copper braiding
• UV resistant halogene-free outer sheath
1
2
3
4
5
6
4
• ELEKTRA SelfTec®heating cable
• “cold tail” power supply conductor
• connecting joint between the power supply conduc-
tor and the heating cable
• label
• end joint
• hermetic plug
1
2
3
4
5
6
• tinned multi-wire copper conductor
• self-regulating conductive polymer
• modied polyolen insulation
• PET covered aluminum foil shield
• tinned copper braiding
• UV resistant halogene-free outer sheath
5
ELEKTRA
Self Tec®
Selection
Pipeline systems, sprinkler systems, etc.
Length of the heating cables depends from:
• pipe’s diameter,
• min. ambient temperature on the installation site.
Value 1 signies 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.
Table 1. Length of the heating cable per 1 m of the heated pipe
½ ¾ 1 1¼ 1½ 2
-10
length
[m] 111111
spiraling
ratio [cm] 000000
-15
length
[m] 111111
spiraling
ratio [cm] 000000
-20
length
[m] 1111.1 1.2 1.5
spiraling
ratio [cm] 00029 23 17
-25
length
[m] 1111.3 1.4 1.7
spiraling
ratio [cm] 00016 15 14
-30
length
[m] 11.1 1.3 1.6 1.8 2.2
spiraling
ratio [cm] 0
18.5
12.5 10.5
10 9.5
Pipe’s diameter [inches]
Ambient temperature [ °C]
6
Note:
Heated pipeline systems, sprinkler systems,
etc., must be insulated.
!
Gutters, downpipes
Selection of the adequate length of the heating
cables depends from:
• min. ambient temperature in the area of the
installation site.
* if the building is located in the regions of intense
snowfall
The values are given for gutters of diameters
Ø100-125 mm.
Min. ambient
temperature
Number of segments
of the heating cable
[°C] Above -5°C Below -5°C
gutters 12
downpipes 1 1 or 2*
7
ELEKTRA
Self Tec®
Examples of installation in gutters
and downpipes
Double-led installation
in a gutter and downpipe
Double-led installation
in a gutter with single-led installation
in a downpipe
Single-led installation
in a gutter or downpipe
8
Materials
– required for the installation of heating cables
on pipes and pipelines:
• ELEKTRA SelfTec®self-regulating heating
cable (in the box),
• self-adhesive installation tape (in the box),
• self-adhesive aluminium foil min. 0.06 mm
thick, approx. 50 mm wide (available in the
offer),
• thermal insulation for pipes.
– required for the installation of heating cables
in gutters and downpipes:
• ELEKTRA SelfTec®self-regulating heating
cable (in the box),
• gutter and downpipe holders (available in the
offer),
• support bar (available in the offer).
9
ELEKTRA
Self Tec®
Installation on pipes
• ELEKTRA SelfTec®self-regulating heating cable
should be selected matching the pipe’s length
according to table 1,
• The heating cable should be mounted along the
pipeline in its bottom part with self-adhesive
installation tape xed every 30 cm. If, basing
on the table, the selected cable is longer than
the heated pipe, the cable should be installed
spirally,
• For plastic pipelines, install self-adhesive alumi-
nium foil on the pipe before xing the heating
cable. This will improve the temperature distri-
bution on the surface of the pipeline,
10
Indice
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