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September 28, 2016 23:01

We make a two-pipe heating system of a private house - guide

pipe system otopleniya- proven and effective method for heating private houses.This system allows you to adjust the heating temperature lyuboykomnaty without changes in other areas of the house.Two-pipe heating system can be used in any number of storeys homes.The main feature of the two-pipe system - the separation of the forward and reverse coolant circuit.According to the flow, so called pipe in the system enters the heated water from the boiler, it is carried out the analysis of the coolant in the radiator coils, floor heating system.After passing by him The cooled liquid is withdrawn via another pipe - feedback.

Two-pipe heating system of a private house

private house-pipe heating system

pipe system has several advantages:

  • Easy control of coolant entering any of the radiators;
  • Can be used in any number of storeys of the house;
  • possibility of mounting a large extent systems.

The disadvantage is doubling the number of pipes in comparison with the one-pipe system, which increases the cost of installation of the system and reduces

its aesthetics - pipe direct flow of water must be placed above the radiator, usually they lay on the ceiling or on a window sill level.

device and the elements of a two-pipe heating system

pipe system as a single pipe can be made with natural and forced circulation of coolant.The choice of the type of circulation generally affects the selected type pipe layout direct current: the top or bottom.

Top routing involves laying of straight pipe at a considerable height, which provides good pressure during the passage of coolant through the radiator without having to install the pump.Two-pipe system with the upper wiring looks more aesthetically pleasing and allows the main pipe of direct current through the entire building over doorways, in addition, it is possible to close the decorative elements.The disadvantage of this system is the need to install the diaphragm expansion vessel, which requires additional costs.There's also an open tank installation, but with one condition - it must be installed at the highest point of the system, that is, in the attic.This, in turn, leads to additional spending on the insulation of the tank.

At the bottom wiring feeding tube located just below the window sill.In this case, there is no problem with the installation of an open expansion tank in a warm place - it can be installed anywhere above the level of straight pipe.However, it is necessary to install a circulation pump, and the inability to pass the pipe through the opening door.If the boiler is installed in close proximity to the entrance into the house, the heating circuit lay on the perimeter to-door.Otherwise, the circuit can be divided into two independent wings having their forward and backward pipe.

Scheme of a two pipe heating systems with circulation pump water from the lower supply line wiring

scheme of two-pipe heating system with pump circulation of water from the lower wiring supply line

circulation pump is installed in the return pipe, as the temperature limit of the unit liquid is typically less than 60 degrees, and the heat transfer fluid at the outlet of the boiler can cause damage.

Fitting the expansion vessel depends on its type: tank membrane sealed chamber can be installed in any convenient location, it is usually placed next to the boiler.Open the expansion tank is required to establish higher levels of straight pipe, this will help avoid the formation of air pockets in the system.

diameter line pipe to two-pipe heating system is typically 25-32 mm, but may be more than 50 mm for the extended system.This pipe has a significant heat dissipation that must be considered when calculating the radiator sections.

radiators attached on one of the selected connection schemes.The most effective are the lateral and diagonal wiring diagrams, bottom connection is used in rare cases for radiators low altitude, and the backbone straight pipe should be located above the radiator.

Varieties of connection to the heating system radiators

To install boiler also imposed certain requirements: for good circulation is necessary to input a coolant return pipe is below its level.Therefore, the boiler is usually chosen floor execution.

Features of the two-pipe heating system in the two-story house

If heated rooms of the first and second floor of the house is not divided between a constantly closed doors, the air heated by the ground floor will rise up to the second floor.As a result, micro-climate house will be uneven: the bottom is cool, but at the top - stuffy and hot.To solve this problem in two ways:

  1. Heating second floor done using underfloor heating instead of radiators.
  2. Distribute radiators so that 2/3 of the total number of sections of the heater is on the ground floor.

In addition, when planning home rationally placed at the bottom of the room, at least in need of heating: kitchen, living room, library, bedrooms and children's rooms to equip the second, warmer floor.

technology performance two-pipe heating system

  1. Install heating boiler with a capacity sufficient to heat all the rooms of the house.The installation of the boiler is recommended to be carried out in strict accordance with the technical requirements.
  2. In a specially prepared place an expansion tank.When it comes to open-tank, it must be put above the highest point of the contour at the upper wiring the direct feed for this fit loft or attic.If the tank installed on unheated attic it is necessary to insulate and install a signal pipe, warning overflow tank.The tube is cut into the top of the tank, and output to the bathroom.Through it, you can drain any excess coolant if necessary.The membrane tank can be put anywhere above the floor level.

    Sample connection two pipe heating system

    connecting two pipe heating systems Sample

  3. Mount vertical riser direct feed to the highest point of the system, and then straight pipe, providing a steady incline of 1%, that is 1 cm to 1 meter in length.For straight pipe slope should be performed in the direction away from the boiler.At connection points pipe heating devices are connected via T-pieces.
  4. Mount return pipe.Installation is carried out along the same path as that for straight pipe, with its start from the boiler.When installing ensure the same slope, directed towards the boiler, that is the highest point of the return should be at a maximum distance from the boiler.
  5. Mount a circulation pump in the return pipe directly before the boiler if necessary.
  6. Mount and connect radiators or the system "warm floor" with the necessary fittings.

    Connecting via radiators fittings

    connect radiators using fittings

  7. After a successful pressure test produces filling systems and performed a test run of the boiler.Adjust the supply of heat to the radiators using cranes, checking temperature stability within one or two sutok.Inogda when filling the system observed in the bubbling tubes and batteries.This is normal for a system with an open tank, if applicable diaphragm expansion tank, you must stop bubbling after the removal of air bubbles from the system with the help of cranes Majewski.
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