If the gas boiler is flowing, the reasons may be in poor quality equipment, improper operation. How to detect and quickly eliminate a leak? How to restore the equipment? We have prepared useful recommendations to help you stay warm in the cold winter.
Why drip boiler heating
What to do if water drips from the case? Find out the cause of the leak, which is not always obvious. Sometimes a reduced pressure in the system indicates a leak.
Because of what the construction proceeds:
- Corrosion of metal knots. Parts come in contact with water, are exposed to temperature changes, so the corrosive effect can quickly lead to damage. Much depends on the quality of the metal. If the heat exchanger is made of diluted alloys, it wears out faster, the tightness of the joints is broken.
- Thin walls of a radiator quickly burn out.
- Water hammer and high pressure contribute to breakage.
- It’s not a boiler, but condensation. It drains from the walls of the chimney and drips onto the burner. As a result, the flame may go out. If this often happens, install a water intake tank. If leaking from the pump side, tighten the center nut.
Consider the causes and their solutions in detail. Malfunctions are typical for all models of the Vailant Turbo, Navien and other brands.
Corrosive effect
Radiators of a double-circuit boiler are made of different metals, which are destroyed in different ways. The main alloys are copper, steel, cast iron. Copper heat exchangers are found in Baksi, as well as wall units Rinai, Celtic, and Bosch. They are corrosion resistant, subject to operating rules. Therefore, manufacturers do not recommend turning on heating more than 60 degrees.
On some models, radiators are coated with an anti-corrosion agent.
Steel heat exchangers are cheaper, resistant to temperature changes, but more susceptible to corrosion. They can be found in the boilers "Proterm", "Buderus", "Beretta." Basically, steel products are not covered by protection, with the exception of the Ferolly trademark. The protective layer is an aluminum coating with eco-friendly insulation.
Cast iron blocks are not afraid of corrosion, but are sensitive to water hammer and temperature changes.
Interestingly, the remaining metal surfaces of the boilers are not covered with a protective layer, like in boilers. Although boilers last longer than water heaters. The wall thickness of the housing is 1.5 mm, and the combustion chamber is 2 mm, so breakdowns occur less frequently.
Make-up Technology
Many users do not pay attention to this factor, but it has already been proven that it really affects the durability of the device. This is water quality. It is believed that “dead water” should be used in the heating system. It does not contain oxygen, additives, microorganisms. Therefore, it does not react with metals. If you still add water from the tap, do it rarely. Oxygen contributes to damage to the internal walls of parts.
Welding seams
Manufacturers should pay special attention to the quality of joints, because the device works under pressure. Automation has been working for a long time abroad with the assembly of equipment, and we have seams performed using x-rays. A small oversight will result in leakage. Often this happens at the end of the warranty, when it is already difficult to prove factory defects.
You can close the crack, weld the seam, but, according to user reviews, such a repair will help for a short time.
Burnt walls
Although the combustion chamber is made of thick metal, improper operation leads to burnout of steel and cast iron.
- The boiler runs at the maximum mark constantly. High flame erupts. This happens due to poor insulation of the home or with an incorrectly selected model - without taking into account the area.
- Incorrect burner power adjustment.
- The combustion chamber is set too low.
When choosing a technique, study user reviews, manufacturer. Consider the volume of the room and install a boiler of suitable power, with flame adjustment.
High blood pressure
Gas equipment is designed for a certain pressure. When heated, the fluid expands, which leads to the bursting of the tank and possible leakage. What else could be a problem:
- Damage to the expansion tank. It is designed to select excess fluid during heating.
- Air traffic jams. You can bleed excess air by unscrewing the taps on the radiators.
- Filter clogged. Rinse it under running water.
- The safety valve leaks - this indicates a blockage or malfunction of the element. If water constantly flows from the tube, this indicates a valve failure. In this case, operation is dangerous and may lead to explosion of the boiler. Therefore, remove and clean the valve from deposits, replace if there is a malfunction.
Watch the pressure gauge. The pressure in the expansion tank and valve must match.
How to fix a leak
To stop the leak in the radiator, you can use the soldering method. Before draining the water, unplug the device and wait for the boiler to cool. If the heat exchanger flows, drain the water from the circuit.
Now remove the radiator:
- Loosen the screws of the outer casing and the camera guard, remove them.
- Disconnect the wiring of the sensors, tubes that are connected to the assembly.
- Take a picture or mark the correct connections with a marker to make the connection.
- Turn off the fan and smoke detector.
- Carefully dismantle the heat exchanger.
Soldering is carried out by a gas burner. First, the place of corrosion is cleaned with fine sandpaper, then degreased. Solder is used for soldering, at the end of work, the damaged area can be covered with aluminum for protection.
To avoid further operational problems, inspect not only the external case, but also the internal components when purchasing. Radiator material, quality of seams, joints, joints. Follow manufacturer's recommendations regarding flame modulation and temperature.