Bottom wiring
This scheme is a classic two-pipe wiring. In the basement, the supply and return are installed, and the heating devices are connected to the jumper, which is located between these circuits. The jumper in this case is two risers that are connected to each other at the highest point of the heating system. Heating elements taken out to the attic must be insulated, otherwise the very first frost can provoke stagnation of the solidified liquid or a breakthrough in the pipeline. It will be possible to solve this problem with a blowtorch, and in the worst case, you will need to weld the heating pipes.
In theory, such a connection requires a good balance of risers so that distant risers can work as efficiently as those nearby. In practice, such balancing is not performed, but the heating is still functioning stably. This is due to the fact that the diameter of the heating risers is different.
The length of the filling from one elevator unit should be minimal in order to ensure the minimum temperature difference on the near and far risers. In the case of a pairwise installation of risers, one of them can work without load, but the heating devices must be connected to both.
How to shut off a heating riser and start it after repair
To repair risers, you must first reset the system, and after completion of repair work, a restart is carried out. The implementation of these operations must occur according to a certain algorithm.
Bottom filling
First you need to find the appropriate valves. You can find them by focusing on the flights of stairs and the layout of the heating devices. If necessary, you can go up to the upper floor and see how the lintel is located. To drain the risers, unscrew the plugs or open the relief valves.
After completing this work, you can close the discharges and very slowly fill the system with water. The slowness of this process is due to the fact that when the system is quickly filled, a water hammer can occur. If there are screw valves, the water must move in the direction indicated by the arrow on the body - otherwise the valve may break, after which you will have to reset the heating system throughout the house.
Then you can open the valves completely and bleed off the air pressure on the upper floor. The Mayevsky crane is usually located in the radiator plug or at the top of the jumper. Resetting and starting will be greatly simplified if all valves installed in the system are ball valves.
Top filling
In this case, it is much easier to start heating, but much more action is required to reset the system. First, the attic riser is blocked, and after it is installed in the basement. Now you can open the reset. To prevent a possible mistake when turning off the system in the attic, it is worth starting from the number of inserts in the bottling from the located landmark.
After finishing the work, you can close the discharge and very slowly fill the riser. It is imperative to observe the direction of movement of the water. Both valves can now be opened. There is no need to bleed the air: it will move itself into the attic expansion tank.
HVS
If an accident occurs in your apartment, the source of the leak is usually not in doubt. With flooding along the riser, it is a little more difficult: in this case, you need to localize the problem (see Leaks in the basement: causes, symptoms, elimination).
Signs
- The leak started in the bathroom, in the kitchen, in the closet or in the hallway next to them;
Hint: with high-quality waterproofing of the floor in the corresponding rooms, water begins to flow to the neighbors from below only after the floor has been flooded to the threshold. In the corridors and hallways, there are no sanitary cabins that protect against leaks and any effective waterproofing.
Bathroom floor often keeps water from leaking
- The incoming water is at a low temperature;
- She comes in continuously... With a cyclical occurrence of a leak, you can suspect a sewer blockage in the upper apartment. In the latter case, water flows to the floor only when it is drained through the taps.
Captain The obvious suggests: before taking any action, visit the neighbors upstairs. Many problems can be fixed without turning off the water. For example, a fistula on a liner or a riser is bandaged using an aluminum clamp or knitting wire, pliers and a gasket for a crane box.
Riser fistula bandage
Finding and disconnecting a riser
The HVS riser related to your apartment is easiest to find in the basement by its location relative to the flight of stairs. The valve is usually located at the outlet of the riser from the filling. A tee with a plug or (less often) a vent is mounted next to it.
The sequence of actions is pretty obvious:
- We close the valve on the riser. The screw valve is twisted up to the stop, the ball or plug valve is rotated 90 degrees;
A nuance: many cork valves are supplied and installed without handles. To turn off such a tap, you will need a pipe or adjustable wrench.
The plug valve is closed with a key
- Partially (we emphasize - partially, until the moment when water flows along the thread), unscrew the plug and wait for the drop in the pressure of the flowing water;
- If the pressure is safely asleep, you can go up to the apartment and wait for the emergency service you called. If this does not happen, the valve on the riser is faulty (the gasket is destroyed, the valve is torn off, the seat in the body is broken, etc.). In this case, we need to go in search of a water metering unit.
Disconnecting the water meter
Turning off the water in the water meter will leave the whole house without it. The good news is that the stop valves in the water meter are almost always in good working order, since they are checked annually by representatives of the water supplying organization.
The water meter can be found:
- By the inscription "VU" on the wall of the house at the entrance to the basement;
- By the location of the cold water supply or the well of the Water System;
The water meter is installed at the cold water inlet to the building
However: the well of the Vodoseti is easy to confuse with the wells of the yard sewage located along the house.
- Finally, the water meter can be found by walking along the cold water filling and finding a turn or a bend of the same diameter as the filling itself.
In the water metering unit, any valve located next to the water meter is closed. If there is a bypass valve in the water meter, when the water meter is installed, the valve on it is closed and sealed.
Water meter with a sealed bypass
At the time of checking the meter, water is supplied through the bypass after removing the seal from the valve or valve; if this is your case, block the bypass line.
Attention: do not forget to fully open the valve on the riser after turning off the water meter, otherwise you have every chance of getting a significant drop in the water pressure in the peaks of its analysis (in case the valve partially blocked the water). Do not be lazy to submit an application to the managing organization for the repair of fittings on the riser.
How to change a heating riser: repairing
The question of how to replace the heating riser arises quite often. Self-repair of the riser section is quite simple, and the amount of materials required is small. For repairs, you will need a galvanized steel pipe, which has good strength and does not corrode, despite the absence of an anti-corrosion coating.When installing the pipe, you must use the thread. This is due to the fact that during welding, the inner part of the pipe will lose the zinc layer, which protects it from negative influences (about
Useful little things
There are various nuances and subtleties that arise during the repair work. The vertical pipe, to which the heating devices are connected, and the paired idle pipe are in the immediate vicinity, so it is worth changing them at the same time. Having replaced the heating risers, it is advisable to create a gap between them, which will allow disassembling the connection on one riser without removing the second.
It is advisable to attach the risers to the wall so that they do not stagger or leak, as this significantly reduces the service life of the heating risers. Often, two fasteners in the area between the floors are sufficient. The steel pipe can be secured with galvanized clamps equipped with rubber gaskets.
An example of replacing a riser heating system is shown in the video:
Curtains or wall panels can be used to mask pipes. In this case, the pipeline will be invisible, but if maintenance or repair is required, it will be accessible. Pipes should not be buried tightly: they should be replaced regularly. It is advisable to install heating risers in a place where access to them will be simplified. This will allow in the future to carry out repairs and transfer of the heating riser without any problems. When cutting a thread, make sure that the distance from it to the floor and walls will be at least 8-10 cm.Cutting a pipe in a bent position is not worth it, and when cutting it is advisable to hold the pipe with a wrench to reduce the likelihood of its tearing for the torque. In addition, oil can be applied to the pipe to facilitate cutting.
Conclusion
This article examined the riser heating system and its features. This information should help in the maintenance and repair of risers, and the knowledge gained will help to understand the issues of operation of riser heating in practice.
Security
What should not be done when working with heating and water supply and how to ensure maximum safety of all work:
- Never try to seal a leak under pressure (except by bandaging small fistulas). An attempt to rewind a locknut on a battery or a liner can turn into a rotten liner torn off along the thread, an attempt to tighten Mayevsky's dripping tap - by breaking the thread on it;
Mayevsky's crane in a radiator plug
- If you turn off the water for minor repairs in your own apartment, be sure to notify the neighbors in the riser about this. Otherwise, the emergency service who arrived at their request may turn on the water at the moment when your eyeliner is disassembled;
- After turning off the water or heating, hang a sign on the valve or valve indicating the reason for the shutdown, apartment number and your telephone. This simple measure, again, will save you from flooding when working in an apartment or a conflict with representatives of the emergency service;
Emergency gang who arrived on call can turn on the water at the most inopportune moment
- Never turn off the heating during the heating season in the absence of an emergency. All work on the replacement of radiators, their transfer, etc. are held in the summer. Lack of heating for several hours is a reason for recalculation of payments for this service by end users - your neighbors.
All heating modernization works are carried out outside the heating season
