Build Daily

August 12, 2017 18:06

One-pipe heating system of a private house - design

-pipe heating system of a private house - the most simple and economical, however, to increase its effectiveness need to know the rules of the device and installation.The difference between the one-pipe heating system from the two-pipe is the lack of separation of the main pipe on the forward and backward.Closed heating circuit bypasses the entire house on the chosen path, and the radiators are connected to the main pipe in the required places.

One-pipe heating system of a private house

Sample one-pipe heating system

pipe system has a whole list of advantages that determine its application in small private houses:

  • Cost of construction and minimal consumption of materials;
  • Easy installation and maintenance;
  • Opportunity Pipeline just above floor level or below;
  • pipe systems can equally well be used as a one-story and two-story house

With properly selected radiator connection sequence You can set the optimum mode for all rooms of the house.

device and the elements of one-pipe heating system

pipe system, as already mentioned, is

a closed circuit including the boiler, the main pipeline, radiators, expansion tank, as well as elements that ensure the circulation of the coolant.The circulation can be natural or forced.

When the natural circulation of coolant flow is provided with different density of water: less dense hot water under pressure is cold coming from the return flow, is forced into the system rises through the riser to the top, where there is its movement on the main pipe and analysis on the radiators and other elementssystem.The slope of the pipe at the same time should not be less than 3-5 degrees.This condition is not always possible to perform, especially in large single-storey houses with extended heating system, because the height difference at such a slope is 5 to 7 cm per meter of pipe length.

Forced circulation is carried circulation pump, which is mounted in the back part of the circuit just before the entrance to the boiler.Using the pump creates a pressure sufficient to preserve the water heating temperature limits.The slope of the main pipe in a forced circulation system can be significantly less - usually sufficient to provide a drop of 0.5 cm to 1 meter of pipe length.

The circulation pump for pipe heating system

circulation pump for one-pipe

heating system to avoid stagnation of coolant in the event of a power outage, in systems with forced circulation collector set overclocking - pipe, heat transfer medium lifts to a height of not less than one and a half meters.At the top of the booster outlet pipe manifold operate in the expansion tank, the purpose of which - pressure control system and the elimination of its emergency increase.

In modern systems installed expansion gated tanks, excluding coolant contact with the air.Inside this flexible membrane tank mounted on one side of which air is pumped with pressurized coolant provided to the other output.They can be installed in any convenient location system.

Sample connection of the expansion vessel to the pipe heating system

connection Sample expansion tank to one-pipe heating system

Expansion tanks open-easy on the device, but require installation at the highest point of the system, in addition, the coolant in them actively saturated with oxygen, which can lead to premature failure of thesteel pipes and radiators due to active corrosion.

installation sequence of elements is:

  • heating boiler heating (gas, diesel, solid fuel, electric or combined);
  • Upper collector exit to the expansion tank;
  • main pipeline bypassing all the rooms on a given route home.The first step is to hold circuit in the room, most in need of heating: children's room, bedroom, bathroom, as the water temperature in the beginning of the path is always higher;
  • radiators installed at selected locations;
  • circulation pump directly in front of the back part of the circuit to the boiler.

Connectivity radiator with one-pipe heating system

connection radiators can be carried out on two schemes: a simple unregulated or under the scheme, called "Leningrader".

simple scheme differs minimum number of elements and compounds.The radiator is connected to the main pipe at two points on the inlet and outlet.Disconnect the radiator filled with the system and heating adjustable with a wiring diagram are not possible.This scheme is the cheapest to install, but is only suitable for small private homes due to uneven heating radiators and low efficiency.

Wiring pipes - Leningradka

Wiring pipes - Leningradka

scheme "Leningradka" involves the installation on the radiator inlet and outlet with his overlapping cranes, which can be adjusted or completely disable the flow of coolant.Also, bypassing the radiator bypass set, equipped with a crane - blocking it, you can send the current coolant through the radiator completely.This arrangement facilitates adjustment of heating in each room.

Heating Scheme - providing Leningradka bypass

heating scheme - providing Leninradka bypass


For independent installation of heating pipe system you will need:

  • heating boiler of appropriate power;
  • Expansion tank membrane or open type;
  • circulation pump;
  • pipes to perform pipeline Ø25 mm and Ø20 mm radiator connection.Pipes can be made of steel, copper, plastic or reinforced polyethylene intended for heating or FGP;
  • fittings to connect pipes to radiators taps;
  • Radiators selected type.Calculating the number of sections is performed before the installation of the system.Simultaneously with radiators buy the necessary plugs and gaskets;
  • bleed screw designed to remove air from the radiators, the number of radiators;

Ceiling cranes, if you choose the scheme "Leningradka", two on each radiator and one for each pass.

mount technology pipe heating system

  1. Install the boiler in the selected location.If the boiler is out of warranty, it is best left to a specialist from the service center.
  2. Mount the main pipeline, do not forget about the installation of tees in the ground connection of the radiator and bypass.When installing strictly maintained slope of 3-5 degrees for systems with natural circulation and 1 cm per meter of pipe length for systems with forced coolant movement.
  3. Install the desired location circulator.Connect it to the main pipe and to the mains.It is necessary to remember that the circulating pump is designed for a temperature no higher than 60 degrees, so it must be installed in the part circuit with the lowest water temperature - at the entrance to the boiler.
  4. Mount the expansion tank of the selected type: open - at the top point of the system, closed - anywhere, usually next to the boiler.
  5. mark up the installation location of radiators, fix them with brackets.It is necessary to maintain the distance recommended by the manufacturer of radiators, to the floor, walls and window sills.
  6. Turn on the radiators in the chosen scheme.Install a bleed screw, plug overlapping cranes.
  7. Carry out pressure testing of the system with compressed air, and then pour the coolant and produce a test run of the system and regulation.

pipe system is equally well suited dlyaodno- and two-story private house, but keep in mind that the path length of more than 30 meters must be installed a more powerful pump.Otherwise, the most far removed from boiler radiators will receive the cooled coolant.One solution to this problem is to install the collector directly behind the boiler and connected in parallel to it two or more circuits.

Installing the collector immediately after the boiler

installation immediately behind the boiler collector

Video - installation of pipe heating system