Installation of one-pipe heating system with polypropylene

Having built a house, many people begin to wonder how to make heating in it. It should be noted right away that such an approach is fundamentally wrong, since it was necessary to take care of this even at the planning stage. This is because if you want to install a single pipe heating system with polypropylene pipes, it will not be so easy, and you may have to destroy what has already been done. This concerns not only making holes in the walls, but also shaving the floor, as the desire to make the housing not only warm, but also beautiful, by laying the pipes in such a way that they do not spoil the design of the heated room, is understandable.

Device and features of one-pipe system

The peculiarity of the one-pipe heating system is that the pipe goes from the boiler, the second end of which comes to the boiler again. Without breaking the main line, radiators are connected to it.

Such heating systems can be:

• horizontal (flow);
• with top wiring (vertical).

Both systems can be both closed and open.

The classic (most commonly used) is horizontal pipe wiring. For retrofitting any battery can be purchased:

1. radiator regulator;
2. Ball Valves;
3. thermostatic valve, etc.

As mentioned at the beginning of the article, one of the advantages of a one-pipe system is the ability to hide communications in the floor. This is an important factor, because very few people now hide heating radiators behind the curtains, and this is not practical, as air circulation around the batteries is disturbed, as a result of which the temperature on the boiler has to be raised, and this leads to unnecessary fuel consumption.

If in the assembled system there is no counter-slope or height differences, then it can work without a pump.

Benefits

1. Installation однотрубной системы выполняется меньшим количеством труб (30–40%).
2. A simple wiring diagram, installation of which can perform a non-specialist.
3. Compared to the two-pipe heating system, one-pipe installation is faster.
4. The system can be installed both in a one-story house, and a house with several floors.
5. There are no problems about how to bypass the doorway when installing pipes.

disadvantages

After talking about the benefits, you need to mention the disadvantages.

1. Each battery must have a Mayevsky valve or an automatic system for bleeding from the air system.
2. Uneven distribution of the coolant - to each next battery comes more cooled water, so the efficiency of the last radiator will be low. The position can be improved by installing a circulation pump in the system.

Planning

Not every person can use computer programs for modeling in a 3D projection of his house, which would undoubtedly be very convenient. Given this nuance, consider how to make a plan manually, by writing everything on a sheet of paper.

When making a scheme, it is necessary to take into account the peculiarity of the installation of a system of polypropylene pipes - it is impossible to make smooth turns in it.

• When making a drawing, it is necessary to take into account that the line must be laid with a slight incline - at least 0.5 cm per 1 meter of pipe, otherwise it will not work without a pump.
• We determine the place of installation of the boiler.
• If for some reason the pipes cannot be hidden in the floor, then it will be necessary to carry out external installation or partially hide the pipes in the floor - in the place of the greatest drop.
• On the diagram we mark the places of installation of the batteries, noting how powerful they should be.

Determining how many sections will be needed for the room, you need to take into account that each subsequent battery heats less well, so you need to increase the number of sections of composable batteries (or area, if the radiators are steel).

• If taps, thermostat, etc. are installed, this should also be reflected in the diagram.
• Having a complete picture, you can calculate how much pipes, fittings and those elements that are planned for retrofitting need.

Installation

For installation of the heating system considered in the article, not so many tools are required. It:

• soldering iron for mounting plastic pipes;
• scissors for cutting plastic pipes;
• shaver (if pipes with external reinforcement are purchased).

All-polymer products are suitable only for water supply. You need to purchase reinforced pipes, the characteristics of which allow them to be used for heating. It is best of all if basalt fiber or aluminum foil is used as a reinforcing layer - in this case, the elongation coefficient of a pipe is threefold reduced, in contrast to products with fiberglass.

The first step is marking on the walls for each battery. They need to be installed under each window - this will prevent cold air from flowing to the floor. In order for the battery to fully fulfill its role, its length must be at least 70% of the width of the window opening. It is also important to maintain distance:

• From the window sill - 10–12 cm.
• From the wall - 3-5 cm.
• From the floor - 8–12 cm.

When purchasing batteries, these requirements must be taken into account.

How to find out how many battery sections you need to install for one room can be found in the article on bimetallic radiators.

Using horizontal markings, you need to mark the places where the fasteners will be installed with such a distance that the installed fastener is located between the sections of the installed battery.

• Holes are drilled in the wall, in which we install fasteners.
• Now you need to prepare the battery. If they are covered with a film from the factory, then it does not need to be removed yet.
• Adhering to the plan, we install air vent valves, thermostats and ball valves.
• We hang the batteries in their places and use the building level to check the horizontal position of them.
• Then the pipes are soldered. It is important not to forget that it is necessary to observe the slope of the main highway.
• It is better to install the bypass with the pump on the return pipe in front of the boiler.
• It is imperative to install an expansion tank and a unit with elements of a security group.
• One-pipe heating system is not necessary to fill with water from the lowest point, as all the same, each radiator will have air to be vented. If an automatic air vent system is installed, they will cope with this task.

It remains to start the boiler and check the performance of the one-pipe system assembled by hand.

Video

See how to do a one-pipe heating system: