Russian winters are sometimes so severe that freezes sewerage and plumbing. It is not simply stops house water supply, The consequences could be much sadder. Pipes can break the ice and have to route all communications again. Reliable and cost-effective way to prevent the catastrophe - to use a self-regulating heating cable for water. This simple method will save heating system even in the Far North. How does the device, its types and the basic principles of installation - in this material.
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- 1 For what purposes will come in handy self-regulating heating cable for water supply and its operating principle
- 1.1 Where the system is used
- 1.2 How does the device
- 1.3 Pros and cons of the device
- 2 Types of heating cables
- 3 How to calculate the length and power of self-regulating heating cable for heating pipes
- 4 Prices of materials
- 5 How to connect the heating cable inside and outside communication
- 5.1 External mounting
- 5.2 Sequence gasket for water heating cable inside the tube
- 5.3 The final stage - the connection and insulation
- 6 Recommendations on the choice of cable
- 7 results
For what purposes will come in handy self-regulating heating cable for water supply and its operating principle
The heating cable for water - a special type of wire that can change its temperature, focusing on the surrounding thermal conditions. The colder it gets trumpet, The stronger the heated wire.
Where the system is used
Warming self-regulating cables for use when installing plumbing roof, Floors, moldings, water and sanitation. There are three areas of application of the device:
- at individual housing construction heating utilities;
- in the commercial sector for warming pipe and fire extinguishing systems;
- at industrial enterprises, operating in harsh environments.
How does the device
Cable structure:
- strands of copper carrying a voltage in the entire length of the device;
- heater matrix regulating temperature and the heating cable;
- several layers of insulator;
- metal screen protects the lead from inadvertent violation of integrity and interference. This screen is supplied grounding;
- a protective outer layer.
The multilayer structure of the wires are not susceptible to external influences and has a long operating period.
The work of self-regulating heating cable is similar to the effect of the resistive wiring. The more heated wire, the stronger the resistance is increased, and vice versa, with a decrease of electric power output is reduced.
The matrix in the device core device regulates conductivity.
Pros and cons of the device
Like any instrument, heating wire It has its advantages and disadvantages. On the first should be aware of, and with the second fight with the help of a competent installation and proper use:
| pros | Description |
| uniform heating | The cable is heated along the entire length, heating uniform and gradual. |
| Reliability | System components are resistant to sudden voltage drops in the network. Several degrees of protection to prevent overheating even with overlaps. |
| economy | Electricity consumption for such a system is relatively low, besides savings are achieved through self-regulation. |
| No restrictions on length | Heater It works effectively regardless of mileage. |
| No need for maintenance | The apparatus autonomously and requires virtually no maintenance, except where mechanical damage. |
| Easy installation | Install cord inside or outside the pipe can be on their own, without involving hired professionals. |
| Minuses | Description |
| cost of | Indeed, prices for such devices are high but it is worth comparing these costs with the possible replacement of all communications after their injuries and make the correct conclusion. |
| The need to purchase additional materials | For installation you need to buy more insulating couplings, adapters and seals. |
Types of heating cables
Warming wire has several varieties:
- resistive - with current conductors, which are heating elements. This heating is carried out has a definite length, which can not be reduced.
- zonal structure It has parallel conductors, wrapped wire with a large resistance. The heating comes from the interaction between coil and core.
- Cable with a self-regulating system. Keep the semiconductor matrix, responsive to changes in temperature outside the cable.
The first two types of cable are used for everything underfloor heating Warm and utilities. Zonal and resistive cables can be used for heating pipes with a diameter of not more than 4 centimeters. Self-regulating cable is more expensive, but such a system pays for itself faster than other species.
Related article:
Cable for heating water pipe. The cable is used to prevent freezing of the water system. How to properly choose to solve the problem without the expense and difficulty of this, we talk more in the article.
How to calculate the length and power of self-regulating heating cable for heating pipes
In each embodiment, the installation device has its own characteristics. There are two ways to wire placement: inside and outside tubes. External mounting is possible with the laying of utilities. If the pipes are already in the ground, it remains only to apply the inner liner and use a wire with self-regulation.
Important! Inside water pipes can only be used with the cable of food grade plastic coating.
What you need to know to calculations:
- P wires (indicated on its side);
- pipe dimensions;
- kind of heat insulator;
- changes in temperature in the area of residence.
The formula is as follows obrazoma:
Cable Length = safety factor x length x the heat loss of pipes / wires F
Pre-calculations can be made on the basis of indicators capacities: D 25 mm - 10 watts per meter, and 40 - 16 W, 60 - 24 W to 80 - 30 watts over this index - 40 watts per meter.
If the cable is positioned outside the water supply, it is possible to increase the heating by means of different locations:
- Parallel (suitable for thin tubes);
- serpentine (quickly warms pipe);
- spirally winding (used for temperature stabilization).
Prices of materials
Prices for samogreyuschie cables for water supply depends on the power. Consider the cost of the set for the heating pipes on the example of the production "Teplolux" company:
| Model | Cost, rub | Specifications |
| Kit Freezstop Lite-15-15 | 5 490 |
|
| Kit Freezstop Lite-15-1 | 1 123 |
|
| Kit Freezstop Lite-15-7 | 3 040 |
|
| Kit Freezstop Lite-15-6 | 2 795 |
|
| Kit Freezstop Lite-15-20 | 6 833 |
|
| Kit Freezstop Lite-15-3 | 1 944 |
|
| Kit Freezstop-25-3 | 2 401 |
|
How to connect the heating cable inside and outside communication
Securing the wiring on top of the pipe is only possible in the process of laying networks. If the networks are already under a layer of soil, think about whether to spend money on excavations or better to use a second, internal option.
External mounting
For external mounting arrangement of the heating wires is done by aluminum tape. He is not only the kiss cable firmly to the pipe, but also act as an additional heat insulation.
There are several variants of the winding, look at them in more detail:
| winding option | Picture | Features |
| Spiral |  | Such wire arrangement variant suitable for areas with a harsh northern climate. cord spiral step is five centimeters or more. In this case, calculating the length of wire, multiply the length of the pipe 1.7. |
| snake |  | This winding type also require additional column length of about 1.4 times the length of the tube. The snake will not hold itself on the surface, it is necessary to fix the tape. |
| longitudinal |  | This is the simplest, but least effective way. The cord is laid along the tube and is equal to its length. |
Tip! When the spiral winding in hard to reach places using the following method: Drum loops more turns and then wrapped them in the opposite direction.
At the node, the following compounds of winding types:
winding types
1 of 4
It is a special responsibility to approach the installation thermostat for heating cables. From this element of the system will depend on its effectiveness directly. The mounting location is necessary to glue insulating tape as in the diagram:
Gasket heater inside the tube justified if previously installed and communication is not possible to remove them for external processing. In this method of heating has its own nuances that have to be taken into account:
- inner lumen tubes is reduced;
- blockages can occur due to the buildup of plaque on the cable;
- installation cable is possible only on straight pipes or communication with a small bend.
Despite all the difficulties, at the inner lining type, there are advantages: easy way of installation and low power consumption.
Sequence gasket for water heating cable inside the tube
| Photo | Description |
 | On wire worn packing and sleeves |
 | Adequate place to Install tee for cable entry in |
 | The cable is pushed to the place which is most exposed to low temperatures |
 | Omentum fixed and insulated. |
The final stage - the connection and insulation
An important stage in the installation of heating pipes - connecting the cable to the mains., You must use primarily shrinking protect the ends of the wires from moisture. How to connect the ends of the wires see in the video:
For the device to work without interruption, and the thermostat should be connected RCD.
Note! The thermostat can normally only work with the system, which is no more than fifty meters.
Once the network connection is necessary to establish a reliable thermal insulation. For these purposes require polyurethane insulation, cut along. They wrapped the water and sewer network.
Recommendations on the choice of cable
- Pipe water supply requires an external cable with a capacity of no less than seventeen watts per meter.
- Needless powerful cables consume a lot of electricity, so think about whether you need to take the system more powerful than required.
- For plastic pipes should acquire self-regulating heating cable for water.
- Selection of the power cable depends on the diameter of lining pipe and method.
- For domestic heating pipeline in central Russia enough power cable at ten watts and insulation thickness of three centimeters.
results
Severe frosts and unsuccessfully laid pipes may lead to an emergency with running water and sewage. When laying utility networks it is important to ensure that communications were below the soil freezing and insulate their self-regulating heating cable for water.
If you got a freezing house with running water, the situation can be remedied by installing a heater inside the tube. Install the system easy to own, buying ready-made kit insulation.