ELEKTRA Selftec User manual

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:
• specic 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
• modied polyolen 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
• modied polyolen 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 signies 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

• After the cable has been installed, the entire
length of the cable should be covered by self-
adhesive aluminum foil (min. thickness: 0.6 mm,
min. width: 50 mm), which facilitates heat
transfer from the cable, as well as to the
pipeline. Additionally, aluminium foil will
prevent the cable from being pushed into
thermal insulation,
• After the installation of the heating cable has
been completed, thermal insulation should be
placed on the pipeline.
11

ELEKTRA
Self Tec®
Installation in gutters
and downpipes
Preliminary proceedings:
• measure the length of gutters and downpipes,
• assess the required heat output resulting from
the climate conditions in which the installation is
to be made,
• select the proper length of the heating cable
taking into account the number of the cable’s
segments in the gutter and downpipe.
* if the building is located in the regions of intense
snowfall
The values are given for gutters of diameters Ø100-
125 mm.
Note:
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
also should be heated.
If the calculated heating cable length has no direct
equivalent in the available ready-made units, select
the longer cable and leave excess cable in the pipe.
!
Min. ambient
temperature
Number of segments
of the heating cable
[°C] Above -5°C Below -5°C
gutters 12
downpipes 1 1 or 2*
12

Gutter holder
Cable xing in the gutter
with a wire with clips
Heating cable xing in gutters and downpipes
Heating cables should be xed in order to maintain
steady spacing between neighbouring cable’s seg-
ments.
Gutters
Heating pipes can be xed with holders (holder spa-
cing should not exceed 30 cm) or a wire with clips.
Gutter spacing wire with clips
13

ELEKTRA
Self Tec®
Downpipes
Single-led heating cables – do not require xing if
the length of the heated downpipe does not exceed
6 m.
Double-led heating cables – to be xed 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 6 m.
Downpipe
spacing clip
Downpipe spacing wire with clips
Leading the cables
in gutters
and downpipes
14

Protect the joining spot of the gutter and downpi-
pe with a exible cable support to prevent
possible damage to the cable.
When using the wire with clips in the downpipe,
suspend it on the support bar.
• support bar
• exible cable support
1
2
1
2
Operation
The system runs after the hermetic plug has been
connected to the mains. Self-regulating heating
cables are characterised by changeable heating
power depending on ambient temperature. The
lower the temperature, the higher the heating cable’s
power, and thus the amount of heat generated. Even
though the cables are self-regulating, they operate
also in ambient temperatures above 0°C and charge
certain amount of electric energy.
To eliminate electric energy consumption in ambient
temperatures above 0°C, disconnect the power
supply of a self-regulating heating cable.
15

ELEKTRA
Self Tec®
Warranty
ELEKTRA company grants a 3 year-long
warranty (from the date of purchase) for the
ELEKTRA SelfTec® self-regulating heating cables.
Warranty conditions
1. Warranty claims require:
• that the heating system has been executed in
full accordance with the Installation Instruc-
tions herein,
• 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 installer
unauthorised by the ELEKTRA company.
3. The Warranty does not cover the damages
inicted as a result of:
• mechanical fault,
• incompatible power supply,
• lack of adequate overload and differential pro-
tection measures of the electric energy system
supplying the heating cable in question,
• no power supply disconnection for the heat-
ing cable in ambient temperatures above 0°C.
4. Within the Warranty herein, ELEKTRA com-
pany undertakes to bear exclusively the costs
required to cover the necessary repairs to the
heating cable itself, or to exchange the cable.
Note:
The Warranty claims must be registered with the
proof of purchase, in the place of purchase or the
ofces of ELEKTRA company.
!
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www.elektra.pl
ELEKTRA
• Samoregulujące
przewody grzejne
Self Tec ®
Instrukcja montażu PL
Installation manual UK
Инструкция по монтажу RU