Why the towel dryer does not heat
In this article we have considered only some, of the many causes of the device failure. Only a specialist who competently and accurately copes with the task will help you to identify, and further eliminate any cause.
No matter how the water towel dryer has not been connected: at the side, from below or diagonally, in the riser, between the conclusions for connection, it must be made narrowing
And it should be one diameter less than the riser pipe. this is the basis of the!
The connection diagrams show ways to connect and narrowing on the riser, but it is not shown that for the natural circulation of hot water, the pipes to the towel dryer must be laid with a slope, if you can not do this, then you will have to bleed the system more often.
If there is no this narrowing between the outlets, the water, without experiencing obstacles goes in a straight line and the towel radiator will be slightly warm. (SNIP water supply and sanitation paragraph 5.7.) Shut-off cocks should be installed on the outlets from the riser, but in no case on the riser itself. for this you can get a fine from the management company.
If you are only planning to install a towel dryer, it is better to watch the video below!
Who is to blame if the towel rail breaks
In every modern apartment there is a towel dryer. It is this sanitary device is often the cause of flooding. Towel rail can be installed by the builder it is an ordinary bending pipe, an extension of the riser or a device installed by the residents themselves. Depending on this, there may be different reasons for the failure of the appliance and the area of responsibility.
- Manufacturing defect when the towel rail gives a leak in the near future after installation;
- Natural corrosion or wear and tear The appliance has been installed for a very long time, has considerable physical wear and t.е. Severe rust and corrosion, and major repairs have not been made in the house, which leads to its depressurization;
- Violation of installation technology when the plumbing device was installed incorrectly, without observing the technology, poor quality connections were made, which led to the destruction and depressurization;
- Mechanical damage, for example, when the communications in the house have not been repaired for many years, the threaded connections have corrosion, and in the apartment began repair, and it was hit by a bathtub;
- A leak in the joints with the pipes occurs at the junction of the towel radiator with the hot water pipes;
- Pressure fluctuations in the water supply system, when the system is constantly kept under high pressure or a sudden jump in pressure leads to the destruction of the system.
If your apartment towel dryer ruptured, it usually causes flooding the neighbors from below. Accordingly, the tenants demand compensation.
Who is to blame for the accident, if the rupture of the hot water system?
Towel rail is considered common property. However, this applies only in cases where the homeowner did not change the coil and did not make any changes to the house system. The Management Company is responsible for the equipment which belongs to the common property.
The main question for the owner of the apartment, where the towel dryer burst, who is to blame for what happened. To find out the cause of the rupture will help an independent examination of the water supply. When you contact our organization 8-495-787-17-43; 8-916-163-52-55 expert will determine why the accident occurred and provide an official conclusion. Independent expertise will allow you to solve the issue with compensation, including, if the case comes to court in the case of the flood neighbors.
The thing is that the employees of the management company will always try to find factors, allowing to lay the blame for what happened to the apartment owner. And while such actions are not always justified by the management company, it can be very difficult to resist them. For this you need clear arguments, which will provide an independent expertise.
If the rupture is with equipment that has not been changed since the construction of the house, in this case it is much easier to prove that it is the responsibility of the Managing Company, but this does not mean that you need to relax, you need to be on guard. There are a lot of cases, when the Managing Company makes an Act after the check-up, and the person at fault is the owner of the apartment.
What to do if the system has been tampered with, the towel dryer has been replaced?
In this case, the responsibility for the condition of the pipes in the apartment lies with the owner. This means that in case of corrosion and possible leaks the occupants should inform the operating organization. Thus the responsibility of citizens is excluded, in case of an accident the communal organization will be deemed to be the guilty party. But the proprietor of an apartment doesn’t always understand pipes and water supply systems. That is why there is a Management Company which should inspect the water supply and heating systems at least twice a year in order to detect possible defects and/or an emergency condition of the pipes. But the management company for the past 10 years has completely changed its attitude to the operation, to perform regular inspections of communications in the apartment is not willing, and from this leaks happen.
If as a result of a leak in the riser pipe flooded was the bottom apartment, the main task of the tenants from above is to find arguments in their defense. Timely conducted independent expertise allows you to find out exactly what caused the leak, who is to blame for the situation and who will reimburse the cost of repairs in flooded apartments.
In this case qualification of the expert is important, i.e.к. in the case of a ruptured towel rail it is important to examine not only the device, but also the water supply system at the entrance to the building to get an overall picture.
Trying to solve the issue on their own is often unsuccessful, it is much more reliable to turn to qualified professionals. You can get an expert consultation and call an expert at 8-495-787-17-43
Who is responsible if the towel dryer leaks
Towel rail leakage is an unpleasant thing. And if this leak is strong, which arose unexpectedly or after the disconnection of hot water, for example, during the absence of the owners of the apartment at home or at night, in this case can cause great damage to property, including the neighbors from below.
The leak does not appear in the coil, and usually in the places of threaded connections, and the reasons for this can be the following:
- The threaded joint, like many other metals, is exposed to water, resulting in corrosion of the metal, the threads are corroded by rust, water gradually begins to drip. This is especially true for older homes, where for decades there has been no repair or replacement of these devices of the hot water supply.
- It would seem that for new houses, including new buildings the problem of corrosion is not so urgent, but it is not so. The leak in such houses, as a rule, appears or as a result of the incorrect, inexperienced installation of a towel dryer by the Builder, because of the marriage of the device or because of the low quality of metal from which the pipes (columns) and a towel dryer are made.
In addition to these causes, other adverse factors can cause a small leak to turn into a real flood. For example, because of the hydraulic shock, corroded by rusted joints can literally rip. In this case, the pressurized water will turn your apartment into a swimming pool in a matter of minutes, and it will be a real waterfall for your downstairs neighbors.
Who is responsible if the towel dryer leaks?
If in your apartment there was such an emergency, it is important to know whose fault it was and who should be responsible for the leak. The person responsible for the accident will pay compensation for damages to you and your neighbors. For the most part, the culprits of such accidents are management companies, which neglect their duties, do not make periodic rounds in accordance with the Decree 70 nr.2.1.1 to determine the condition of the common property to be repaired or replaced.
However, you should also take into account that the Managing Company, which performs its duties in bad faith, can shift the blame on the apartment owner, whose towel dryer is leaking. In this case, the employees of the Managing Company will substantiate their position with such arguments:
- The towel rail is leaking because the owner did not keep an eye on it;
- The towel dryer leaked due to repairs made by the apartment owner, especially if the owner repaired the bathroom and toilet, demolished partitions between them;
- the leak occurred due to an independent replacement of the hot water supply device (and if it was done by a plumber from the MC, and you do not have a receipt of payment, the MC will say that they have not changed anything);
- Coil leakage occurred due to the fact that you have not made in time to repair and replace it.
Employees of the management company can invent many other different justifications for their innocence and simply shift their responsibility. In such cases you should not trust the utilities, and it is better to make an independent expertise which will establish the real causes of the accident.
In situations like this, an independent construction survey is probably the only way to determine the actual cause of the accident and the absence of the owner’s fault in the leak.
Management companies servicing apartment buildings are obliged to conduct seasonal and technical inspections of the common property and eliminate them when detecting faults. This duty is entrusted to them by the item. 13 и 13.1. Rules of the maintenance of the common property in the MAB, approved by the Government Decree of 13.08.2006 91. Heating, hot and cold water pipes up to the first disconnecting device belong to the property of the whole apartment complex. Accordingly, the Managing Company should make their regular audit.
Only an expert will be able to determine the true cause of the accident and establish a causal relationship between the leak and the failure to perform their direct responsibilities managing company. Therefore, if such an incident has happened in your apartment, do not hesitate to call us at: 8-495-787-17-43, 8-916-163-52-55.
How else can our company be useful in the case of a flood
We have been successfully working since 2004, and our experts are very experienced in dealing with apartment flooding, water supply breakdowns, and other similar issues. In addition, we have a staff of highly qualified lawyers who will be able to recover compensation from the perpetrators of flooding through the courts for the damage caused and moral damage.
We are ready to help you at any stage, but remember, the sooner you turn to professionals, the faster and better they will provide you with the necessary service. For example, if you found out at home, the leak, which spoiled your property or flooded the neighbors, call us immediately. Our experts will give you advice on how and what to do, will come to your apartment to draw up a report on the bay or to conduct an examination, provide other assistance.
There are only three reasons why a towel dryer in the bathroom leaks:
Decrease in the tightness of the gasket or winding;
To fix the cause of the leak you need to shut off the circulation in the towel dryer, then drain the coolant from it.
The riser can be part of the heating system in an apartment building or relate to the water supply of DHW.
Where to shut off the water
In Soviet times, towel warmers were mounted in the riser directly without a bypass and shutoff valves. This riser passed in the middle of the combined bathroom or toilet, which greatly complicates the hidden wiring of this engineering system. The threaded connection is coupling:
- The coupling is screwed onto a long fitting welded to the pipe;
- A linen or hemp lining should be wound around the short connector welded to the towel radiator;
- The ends of the fittings are aligned on the same spatial axis, the coupling is screwed on the short fitting;
- On the reverse side (long thread), the coupling is clamped with a locknut.
Currently, builders place the risers of towel dryers with the rest of the risers of HTW, HTW. They are cut into two mowing line. supply, return, mounted ball valves, two water outlets in the bathtub.
In all other cases, an intermediate variant is used. the self-assembled bypass. offset, recessed, open or concealed distribution of pipes, shut-off valves.
Instead of steel pipes, standpipes, polypropylene pipes, American-style or fittings with gaskets, coupling nuts are used more often.
Taps in the apartment
The easiest way to shut off the circulation by specially installed for this purpose valves. The contour of the towel dryer should be cut into the riser pipe in parallel, so that the circulation in the system is kept.
The correct connection diagram of the substation with two cocks.
However, the leakage point can be in front of the shut-off valve, or the towel radiator is connected to the riser without a bypass. In this case, you need to shut off the valves in the basement of the apartment building.
- There is still pressure in the system;
- Water from the riser will have to drain completely or partially, depending on the floor and the scheme of supply (from below, from above), where the repair is made.
Currently, the service of draining the water from the riser pipe is paid. In addition, other tenants connected to the same riser will be deprived of hot water or heating for the period of repair.
Therefore. When the dryer begins to leak, you need to call the housing or management company. However, waiting for an emergency service can drag on indefinitely.
If the water is only dripping from the connection, you can not take any additional action. On a strong fistula can independently put a plumbing clamp, as in the photo below.
If the apartment has no such clamp, the stores are closed, the waiting time of “emergency” is delayed, it is difficult or impossible to collect the hot water in any container, it makes sense to go down into the basement of the house and shut off the valve by your own forces. To do this, it is necessary to imagine where exactly the shut-off valves are located.
Valves in the basement
Before you do something with the valves in the basement, you need to consider the following:
- The towel rail riser may be part of the home’s DHW or heating system;
- connection diagrams and location of shut-off valves, respectively, will be different;
- It is strictly prohibited to independently drain the water from any of these systems.
You need to go down into the basement to disconnect the riser, to wait for the staff of the emergency team.
To reduce heat loss during transportation of the boiling water from the boiler room to the detached apartment buildings increases the pressure and temperature of the coolant. Therefore in each basement is an elevator unit, in which the inlet temperature is reduced by mixing the cooled water from the return.
The pressure is regulated in the narrower part of the elevator pipe. The principle here is as follows:
- on the risers, the heat carrier is taken before the elevator from the supply line (always located above;
- then in the attic or on the top floor of the building, a horizontal pipe is installed from which a maximum of six risers are fed;
- the direction of circulation in them, respectively, will be from the top to the bottom;
- The bottom part of all these risers connects to a common pipe, and connects to the return of the elevator plant (always from the bottom).
In the dead-end systems, the elevator unit is equipped with two gate valves, in the circulation lines, there are four of them.
Therefore to eliminate the pressure in the entire house, you need to turn off all valves or ball valves at the top of the elevator node. the supply.
This will allow you to repair the apartment towel rail, fix the leak in the place of soldering, welding, and change the shut-off valve in front of the towel rail circuit.
Note: In the lower heating circuit, the pipes run along the perimeter of the building in the basement. The risers go from them to the heating registers in the living rooms and the kitchen. It is strictly prohibited to close the valves on them.
Otherwise, air gets into the system, the management company will submit a serious bill for preventive work.
In houses of old construction, until about the mid-80s, a dead-end DHW system was used. It is completely similar to the cold water system:
A handle may not be available, so it’s best to bring a wrench with you before going to the basement.
Later, hot water began to be supplied to apartments by the recirculation scheme. This allows it not to cool in the pipes in the absence of consumption for a long time. Shut off the water in this case is much more difficult:
Screw in the valve until it stops, or turn the lever of the ball valve to the nonoperational position at the bottom of your riser in the basement;
If this does not increase the water pressure in the ajar plug, the riser is not connected to the interest. It can be opened completely. This reveals the riser pipe, which is directly connected with the riser pipe on which the heater is located in the toilet room of interest.
Leak on the connection threads
there are only two ways of making a threaded joint airtight. by winding and by gasket. To distinguish between them is very simple. if the connection is a cap nut, FUM tape, oakum, other materials that are wound on the thread, you should immediately put aside.
The principle of connecting with gaskets is very simple:
- This sealing element is placed inside the union nut;
- the gasket is already on the end of one of the connectors, pressed to it the whole side surface;
- When screwing the same union nut on the second connector the gasket is pressed to its end face.
this prevents liquid from getting between the union nut and the inside surface of the nut.
If you additionally wrap tape or FUM tape on the threaded part of the mating connector, the stainless union nut may not reach the end of the thread. In this case the tightening force will remain, but the tightness can be noticeably reduced, because the gasket is not pressed by the ends of the connected fittings.
The gasket must be compressed by the union nut between the nipple and the plug.
The main defects that can, and quite easily, be repaired with your own hands are:
- Too sharp edge of one or both fittings. is blunted with a file on the spot;
- jammed thread. “run” flat on the pipe or water socket on the spot on the mating nipple in a vice.
In the absence of a vice, you can press the fitting to the tabletop with a clamp.
Less often the “culprit” of a leak is a PTFE gasket. The material has a high coefficient of linear expansion and is too soft. On the stainless steel towel radiator, connected to the heating system, after turning off the hot water in the off-season the gasket can shrink when cooling, causing leaks. To repair the defect, it is sufficient to re-tighten the union nut.
Non-repairable defects are sheared threads or a short threaded part of the connection, on which the union nut will be screwed. In this case, the shaped product can only be replaced as a whole, or threaded to a smaller size. In the second variant it is necessary to use a union nut of a smaller diameter, respectively.
New heating, DHW, and towel dryer systems default to couplings with sleeved nuts. However, in apartments of secondary housing, still, in large numbers, operated dryers, connected to the risers “the old way”.
In this case the screw joint can be sealed with a winding collar. This version uses the classic method of ensuring tightness of the thread connection:
- the pipes to be joined do not necessarily touch the ends;
- water penetrates into this gap in the inner space between the socket and the pipes;
- the tightness is ensured by filling the hollows between the thread coils with FUM tape or hemp.
FUM tape is made of fluoroplastic, contrary to the obsessive advertising of the manufacturer, it is much more difficult to work with this material for a non-professional than with the standard winding:
- If less than the required amount is applied, water will leak into the thread;
- if the tape on the thread is more than the required amount, it, simply, will be cut off when screwed.
The threaded connection is packed with linen cloth using the following technique:
- the diameter of the strand must be approximately equal to the depth of the thread;
- the length of the strand should provide the necessary number of windings in 1.5. 2 layers;
- First you need to twist the oakum, but not from the beginning, but with an interval of 5 cm;
- thread is wrapped clockwise (in the direction of turns) with a twisted piece of oakum;
- then continue with a second layer, but in the opposite direction;
- At the last stage, the remaining, not twisted, beginning of the strand is wound onto the thread from the middle to the end of the pipe.
Sealant or Unipak paste is applied over the linen material to impregnate the material. After these steps, the coupling should be twisted on the winding by hand for 2 turns. Further tightening effort is made with a wrench.
the cause of the leak in the threaded joints wrapped with linen underwinding may be the depletion of the pipe life because of corroded through areas, both on the threaded and smooth surface of the pipe.
To fix the defect it will be necessary to cut the defective part or change the entire pipe.
Leakage at the welding point
The higher the decorative value of the bathroom heater, the more it has welded or soldered joints.
If in these places leakage is observed immediately after installation, the product is replaced in the store under warranty. However, during the operation of a towel dryer ladder such defects can be observed not only in welding sites, but also on straight and curved sections.
The cause is electrochemical corrosion. Users and plumbers from the housing corporation usually call it a “stray current” effect, which is not quite true. In fact, any section of the PS can rust, and collapse under the pressure of water, due to the lack of grounding:
- all risers of the apartment building are connected to the ground loop by default;
- Building codes here use steel pipes;
- during the replacement of individual sections of risers with dielectric pipes, this circuit is interrupted;
- The water used as a coolant, is a conductor of electricity.
Therefore, it is necessary to ground the metal towel dryers additionally, although it reduces their decorative value in the interior of the room. Because repairing a damaged area is much more difficult than pulling a ground wire.
Repair of a towel dryer
Pinholes in stainless steel PS pipes can be soldered at home on site or after disassembly, if there is no access to the damaged area.
For this purpose, a special wire is used, which is sold in stores.
Roughen the damaged area locally with emery paper and degrease with acetone. Then heating is done with a gas hand torch.
The flame is taken slightly to the side, hard solder is leaned against the heated area.
The hole is filled with molten metal, the excess runs down the outer surface of the pipe, removed with a brush.
Eliminate the cause
When using plastic pipes to replace old steel risers is recommended to eliminate the break in the ground loop:
To the water outlet wire can be pulled from the inside, screw it to the metal part of the fitting with a clamp;
In other cases you will have to put a clamp directly on the visible part of the pipes or the PS.
Thus, the leaks of a towel dryer in the places of threaded joints can be eliminated by replacing the gaskets, gaskets, tidying up the threads and the ends of fittings. To prevent leaks due to electrochemical corrosion of the heater, you can correctly connect its metal parts to the ground loop of the apartment building.
The leakage of the heated towel rail, who is to blame for the leakage
One of the most frequent accidents on a towel dryer is a leak in the place of a threaded joint (towel dryer connection to the riser). The result of the accident becomes flooding of the apartment, as well as flooding of the apartments, located on the lower floors. Who is to blame for such accidents, what to do in such situations will help to understand the independent expertise, read more in this article.
In the 70-80’s of the last century, builders of apartment buildings for rapid erection mounted water supply systems from sections of pipes with threaded joints on each floor. Such pipes were connected to each other using a coupling. Exactly the same way towel dryers were mounted, that is, the riser consisted of a set of threaded sections, which are connected with each other by couplings.
The advantages of this method of unified assembly were quickness and convenience. However, such a system of connections meant that it would be periodically monitored, to carry out maintenance repairs, and if necessary, to replace worn parts, since the threaded joints in the riser is the most painful place of the riser. These functions are now entrusted to service organizations: management companies, housing cooperatives and others.
In fact it turned out that employees of service organizations treat their responsibilities carelessly, do not conduct regular inspections of engineering networks, do not change in time sections of pipes, connections, etc., which require replacement.п.
So, after 25-30 years, couplings and fittings, connecting water pipe with a towel dryer, wear out, there is corrosion, depletion of the walls. As a result, the socket joint is the weakest point in the water system, begins a small leak, then a larger leak, until a complete break occurs.
Repair or replace a leaking radiator valve
In this case, the worn-out connection is not necessarily evidenced by the fact that the water drips from the drain. There may be no water, but under certain circumstances (for example, a hydraulic pressure surge in the pipes, when the pressure in the system rises sharply), the connection to the towel rail can break immediately.
The fault of the management company and its deception
Part 2 of Article 162 of the Housing Code provides that the Managing Company, concluding a contract for the management of an apartment building, assumes responsibilities for the management of apartment buildings, maintenance and repair of common property and the provision of other services.
Heating standpipes, water standpipes with branches to the first stop valve are the common property of the owners of the apartment building. It, in particular, is fixed in item. п. 5 and 6 of the Resolution of the Government of 13.08.2006 91.
Accordingly, based on the standards established by law, the threaded joints on the towel radiator belong to the common property of the house. And if so, the employees of the Managing Company are obliged to monitor their condition. A diligent management company fulfils this obligation by regular inspections of the common property at least once in half a year. year. If hazardous areas that pose a risk of breakdowns are identified, the management company repairs or replaces them. These obligations are also stipulated in the Decree of the State Construction Committee of 27th of July, 2003 “On approval of the rules of technical exploitation of the housing stock”.09.2003 70 On Approval of the Rules and Standards of Technical Operation of the Housing Stock.
An unscrupulous management company will not do this, hoping that nothing serious will happen. In addition, as the management of such MC thinks, if there is still an accident, the responsibility for it can always be shifted to the owner of the apartment. Unfortunately, such practice of dishonest managing companies is not single, and, as a rule, they have succeeded in shifting the blame on the owners of the residential premises, if they certainly will not take the necessary measures. The Managing company prepares a report on the flood, where they shift the blame on the owner of the apartment, setting all neighbors to blame the neighbor, so all claims are to be presented to him.
How not to let the Managing Company to avoid responsibility
If a leak on the pipe runoff with a towel dryer happened in your apartment, there was flooding of the premises, damage to furniture and decoration, you should take the following measures:
- call the unified unified dispatching service, tell about the incident, the need to shut off the risers and draw up a protocol of flooding.
- after fixing the leak wait for the employees of the Managing Company, they should come within 12 hours from the time of filing, make a report of the flood with them, make sure that it indicated the cause of the gap connection and the culprit (MC).
- If the employees of the Managing Company did not arrive for drawing up a deed or do not want to indicate in it themselves as the culprit draw up a deed with the participation of neighbors.
- In this case, you need an independent construction-technical expertise. Invite our independent expert to examine the accident and to prepare an expert report on the causes of the accident and the value of the damage.
- go to court to recover material and moral damages from the management company.
The company Remstroyservice since 2004, is engaged in carrying out construction-technical expertise, as well as judicial resolution of such issues. If in your apartment there was a leak of a towel dryer and you do not know what to do, how to act, how to prove your innocence we suggest you to use our services. On all questions you can consult by phone: 8-495-787-17-43, 8-916-163-52-55.
Why does the towel dryer leak: the main causes and ways to fix the leak
The towel radiator has become not only a functional device, but also a stylish thing in the bathroom. It is used as a heating device, as well as a dryer for towels, small items. Like any device, it needs a preventive inspection, checking for integrity. When the towel dryer leaks, it is a problem of flooding not only your own apartment, but also the probability to meet the wet spots in the apartment of the neighbors. Not always quickly comes a master in an emergency situation, so you must be able to find the cause of the leak and fix it yourself.
Let’s find out why the heater does not heat
The towel rail becomes cold for several objective reasons. For the independent decision of a problem or it is necessary to have profile education with experience of regular practice of its installation, or it is enough to follow the given instruction precisely. This will reveal all the existing shortcomings, correct the situation as soon as possible.
The design of the heater
In order not to get a cold towel dryer during operation, although there is hot water in the system, even at the stage of purchase of the heating device, you should pay attention to its design.
U-shaped or M-shaped hinge
The simplest version of the towel radiator (hereinafter referred to as PS) are:
Single loop. has a U shape in the plan, is bent from a single pipe or welded from two branches and two or three pieces of pipe;
In terms of thermal engineering and building hydraulics PS of these modifications have the ideal shape and performance:
can be built into the riser by means of a pair of branches;
- If the U-shaped or M-shaped loop is cut into the riser without a bypass, it is forbidden to use shut-off valves;
- in case of parallel installation, the valve may not be cut into the bypass, but taps can be mounted at the bottom and at the top immediately after the tees.
Narrow and shift the bypass relative to the riser axis is not required. Due to the effect of pressure and temperature difference on the inlet/outlet of the towel radiator, the hydraulic pump effect is provided. Due to which the hot water will be drawn into the side circuit with a probability of 100%.
You can get a cold towel rail here in two cases:
Unfortunately, U-shaped and M-shaped devices have low decorative properties in the interior.
The ladder and its varieties
Towel rail in the form of an attached tubular ladder has the following performance characteristics:
- branching and branching inside;
- increased hydraulic losses;
In case of the bottom connection, the towel radiator in the riser pipes with bottom water supply (upward flow) does not work with a probability of 95. 100%. Therefore, diagonal or lateral mounting is recommended.
When connecting the “staircase” to the riser with a descending flow of the heat carrier the following processes take place inside the heating device:
- hot water flows into the vertical part of the PS from above;
- then the boiling water flows into the horizontal pipes of the heater;
- the coolant starts to cool down;
- according to the laws of physics, cold (in fact, less warm in comparison with the rest of the flow) water tends downwards;
- which coincides with the direction of the fluid in the riser pipe, where it is eventually evacuated.
That is, there is no countercurrent, there is normal circulation, even when mounted on the riser.
If the connection is made laterally or diagonally, and the flow in the riser moves from bottom to top, the coolant circulation inside the circuit in question will be poor:
- the boiling water comes from the bottom;
- water first tends upwards, but cools down in the radiator, which is actually a “staircase”;
- therefore, a counter-flow occurs, tending to the bottom of the heater.
In this case, the speed of circulation will depend on the pressure in the riser, the value of hydraulic losses. For example, when using tight fittings or long distance from the riser pipe PS may come a time when the flow will not be able to push the cold water tending down, that is, at the point of connection of the heat device.
How to fix your towel rail when it stops heating
The ownership of the riser, on which the PS is mounted
Some apartment buildings physically do not have HTW lines. Instead, apartments are equipped with flow-through water heaters, less often storage water heaters (popularly, “columns” and “boilers”, respectively) for hot water supply to users.
According to existing building and sanitary standards for the connection of PS to water heaters is prohibited. Therefore, in the sanitary unit may be riser to connect the towel rail, belonging to both the heating system and hot water supply line.
The heating system
According to SNiP norms the centralized heating system in an apartment building must meet the requirements:
- A line approaches the building, the coolant with a temperature of 150 ° C and a pressure of 6. 10 bars;
- In the basement or technical cellar there is an elevator unit in which the pressure is reduced to 3. 6 bar and the temperature to 95 ° C by mixing conditionally cold water from the return flow;
Radiator valves, which is the one to turn it off.
Therefore the flow in all apartments will always be from top to bottom (downward flow). At the bottom, the risers are again combined into one common line, which is cut into the return, again, before the elevator unit.
Note: The heat carrier will be heated in the boiler room only in winter, the heating season which lasts in Russia 6-8 months (depending on the region). With the onset of summer, the heating is turned off, respectively PS will be cold.
The only option for ensuring year-round operability in this case is an electric towel rail.
According to the standard SanPiN 18.104.22.1686-09 the water in the hot water supply lines of an apartment building must have a temperature of 60°C and a pressure of 5 bar or more. The main differences between DHW and heating are:
The direction of movement of hot water in risers from the bottom upwards (upward flow) and in the opposite direction (two-pipe scheme);
The main reasons for the cold ss in this case are:
air congestion after the water in the house is turned off, but only in the heating devices of the “staircase” type;
Attention: It is forbidden to install circulation pumps in the circuits to connect the towel dryer.
In houses with 1. 3 floors are usually used dead-end risers, as the length of the pipeline is halved. Accordingly, with closed faucets there will be no circulation, the water in the system, and in the PS, in particular, will cool faster and stronger.
Looped DHW networks have a scheme similar to the heating system. Boiling water is supplied up one riser pipe, and from there it is distributed through several risers to the apartments. In this case, the system has an additional heater. a boiler or heat exchanger from the heating system.
If the taps are closed in the apartments, for example at night when the coolant is not used in the house for a long time, the water in the pipes cools down and flows down the riser into the lower level. It then enters the heat exchanger, is heated, and then rises again through the common supply riser. In this case, the sump always stays hot, the temperature does not depend on the flow of water in the building.
In apartments, the model of the USSR were used self-made towel dryers, bent, less often welded from a pipe with a diameter of 40 mm. They cut directly into the riser pipe gap, so they are actually part of the riser pipe. At present, the standards of the joint venture prohibit the installation of a towel radiator without a bypass. There are three designs of bypass, a bypass mowing line:
This element becomes part of the riser between the supply and return from the PS;
In the first case, tees are used, the hydraulic losses in the system are minimal. However, some plumbers from the housing and communal services believe that the boiling water always takes the path of “least resistance”, and will not enter the branch towel dryer.
This would be true if not for the “hydraulic pump” effect. Due to the rapid cooling of water in the system, a flow is created, which draws the boiling water from the riser, and helps to leave the cooled water from the towel rail at the opposite end.
Using a narrowed bypass when installing a ladder substation.
However, 70% of users continue to shift the riser pipe inside or reduce its diameter by one size, so that the PS can normally work, for example, with a significant distance from the riser pipe of a high-rise building.
Note: Do not install shut-off valves in the bypass section. Valves can only be installed in the horizontal flow and return sections of the WC.
The reason that the towel dryer in the bathroom has stopped heating, can become stop valves. A stop valve can break inside it (ball, needle) or the inner diameter is too narrowed, due to the increased hydraulic losses the circulation has deteriorated.
The upper parts of the heating devices of the “ladder” model usually have built-in Maevsky cocks, which are not a stop valve, but a regulating valve. Airlocks are bled out through them.
M- or U-shaped towel rail is very difficult to mount incorrectly. However, it is possible if the heat appliance is far from the riser. The general principle of connection is as follows:
- the upper horizontal line tapping point on the riser pipe should be higher than the top hole in the PC;
- the lower point of the horizontal cut in the riser pipe should preferably be situated below the lower opening of the PS.
The horizontal mowing lines along the whole route of the line must not have loops rising above the upper point of the heater. Otherwise air will collect in these loops, circulation will become poor or will stop altogether.
To fix the problem you may need to remove the lining, drywall, if the pipe from the riser to the socket is laid covertly.
Very rarely, the SAR will not warm up after connection because of a mud plug. For example, this malfunction was encountered by the user in the video below:
For example, you bought an apartment in a new building, where the towel dryer has not yet been installed, and the bathroom has not been used for a long time, but the connection to the riser has already been made. When the coolant circulates, dirt is ejected in the mowing line, inside of which there is no water movement.
The internal cross-section of the pipes is gradually clogged. In this case, the user should “blow” the pipes with mains pressure, even before installing the heater. This should be done alternately by opening one tap first or by unscrewing the stopper and then the second tap.
A dirt plug will reduce, or make it impossible to circulate if this is not done. Similarly, when buying a secondary property, where the previous owner of the PS was completely dismantled.
What you need to know to fix the leak
It should be understood that leaks can occur not only as a result of poor installation or intensive use. Rather common cause of leaks is the manufacturing material of the device, as well as the quality of water in it. As you may have guessed, its quality always leaves much to be desired. Only towel rails made of stainless steel can resist the negative effects. But because of their popularity such models are often faked, and therefore in the process of their purchase you should be extremely careful in order not to fall prey to swindlers.
On the market there are not only water towel rails, but also electric ones. And if you want to get rid of even the slightest chance of a leak, it is recommended to buy an electric model. к. They do not contain water, and the heating of the room along with drying things is done by the heating element.
If there is a leak, you need to find the cause. If it occurred as a result of a factory defect, you should apply to the store, where you should replace the device under warranty. But, and if the failure is not associated with a manufacturer’s error, then you will need to go to your own repair. In the process of performing the work it is necessary to be extremely careful not to tear the pipes and not to damage them with the tools used.
To understand what to do if the towel dryer leaks, it is necessary to identify the location of the damage and the cause of the violation of the tightness of the structure. The performance of older devices often deteriorates as a result of wear and tear caused by prolonged use or corrosion. Newly installed devices often begin to leak due to a factory defect or improper installation.
When buying a towel radiator, you need to pay attention to its technical specifications. It is important that it can withstand the working pressure in the system.
Corrosion of the body
The body of the coils are made of metals that are resistant to oxidation. However, when oxygenated fluid passes through the device, over time, s of corrosion may appear at the seams of the individual elements. The following factors increase the risk of defects:
The upper protective coating is often damaged during assembly. Corrosion s develop in the scratched areas. Stray currents in the water and heating system increase the risk of rust. They arise from improper grounding.
Wear on the locking gaskets
The gaskets are made of solid rubber. Quality components are more resistant to wear and tear. Cheap ones deteriorate quickly under the influence of high temperatures, humidity, impurities of salts and other substances contained in water. Silicone gaskets are often included with the device. They are less resistant to the influence of various factors, so the leak can appear after a short period of operation.
Parts are installed at the joints of pipes. If the rubber breaks down, there will be s of leakage in the area where the nuts are secured.
There may be little leakage for a long time. In this case, when touching the connection point of the coil will feel damp. This is enough to keep the bathroom very humid, even with good ventilation. As the rubber seal destroys, the leakage will intensify.
Unusually shaped devices have gained in popularity. They are decorative. However, such designs have a number of disadvantages, creating conditions for the appearance of leaks. Such towel rails are made by welding together a number of individual elements. On top they are coated with an anti-corrosion compound. With this method of production, the risk of manufacturing defects increases. Every pipe joint is a potential trouble spot.
Problems with fixing the cap nut
The fixation of hot water or heating pipes with a towel dryer is performed at the expense of a special coupling nut. Under the influence of temperature fluctuations, it can weaken. Appearance of moisture in the connection area is also caused by shrinkage of hemp or other sealant used during installation of the device. Leakage in the casing nut area can also be caused by sealant wear and tear. This material over time dries out and breaks down, which leads to moisture under the thread.