Recommendations for the use of geysers Neva
I am using a Neva 4510 water heater. The hot water supply tap is located 15 m from the device. When adjusting the temperature of the supplied water, a number of problems arise. If the flow rate decreases, the temperature does not increase immediately. Therefore, it is very difficult to configure exactly what is required, the inertia is too high. If diluted with cold water, overheating occurs in the unit. Moreover, if you open the tap in the kitchen, which is located next to the appliance, there are no such problems. So I’m thinking, maybe install a duplicate water temperature indicator in the bathroom? Tell me how to implement this more competently?
All modern gas instantaneous water heaters are equipped with this option. Moreover, you can even set the temperature from a remote control panel. And you can dilute water on them; they do not depend on ducts. You can also extend the temperature sensor several meters away using shielded twisted pair cable.
A Neva 4511 gas water heater is connected. I wanted to make a remote temperature sensor for it. And for this I bought an electronic indoor-outdoor thermometer with a clock. And there is a remote temperature sensor packed in a metal case. I thought that the wiring from the sensors could be extended. And install the sensor itself on the hot water outlet pipe. But here's what bothers me. Sensor polling time is 16 seconds. I measured the temperature of this remote sensor and watched how long it took for the readings to change. If it is located in such a way that it shows the temperature indoors or outdoors, then there are no problems. And if it is mounted in the device, then the pause is 2 seconds. Tell me, who knows why this happens? Are there signs with a remote sensor, or weather stations that are less inertial? For example, I need 40 degrees, I set the device to 42. The device actually heats the water to the set value. And in the bathroom, if you add a little cold water, the temperature will change in a second. And if you wait a minute, the water will already heat up to 50 degrees Celsius, which makes it necessary to add even more cold water. Although it is more common that it is necessary to increase the temperature on the water heater by reducing the flow rate.
As you described, it all depends on the ratio of the HDS column and the loop with an open screen for dilution. Mechanical models have an overestimated GDS, this is a real problem. If you dilute the water, it begins to flow where there is less resistance. That is, if the tap is located next to the device, then everything works as it should. You add cold water, and the flow decreases, accordingly the temperature increases, and accordingly you need to dilute it more. And so on until the unit overheats and turns off. But if the screen is located at a considerable distance from the device, then you can dilute it a little. In modern good models, there is temperature stabilization to eliminate this problem. Their GDS is much lower, since there are no narrowings anywhere in the path of water movement.
My Neva 4513 gas water heater is broken. Sometimes it doesn’t turn on. And sometimes it works fine. And sometimes it happens that there is simply no spark. The problem appeared about a month ago, when I blocked the vents in the underground. Although before that, there were no problems for 7 years. A room where a small device is installed. Very tight doors. There is a plumbing hatch in the window. After the column is turned off, it may light up, but there is no spark. I tried to clean the contacts and inserted a new battery. Nothing helped. Relatives are already demanding that a new device be installed. Is there any way I can repair this?
Firstly, the device has been in use for quite a long time, it needs to be cleaned. It is also important that the wires are not damaged, so that there is good contact everywhere. And, of course, for the water heater to operate, air supply is necessary.
We use the Neva 4610 dispenser. Despite the fact that it is completely new, it has already broken down. It turns off during operation. What could it be? I checked the gas and water pressure, everything is fine.
You may have problems with your hood. To fix this problem, you need to open the ventilation hole and put a piece of paper there. If it sticks to the hole, then there is traction. You can also check its presence using a mirror. Make sure that the exhaust elbow where it goes into the wall is sealed. Check the installation of the draft sensor. The sensor responsible for water overheating may also stop working.
Operating instructions for models Neva 4510, 4511, 4513, 4610
Operating rules
When operating gas water heaters, it is prohibited:
1. Self-installation and commissioning. 2. Use the device by children and persons who do not know the operating instructions. 3. Turn on the device if there is no draft in the ventilation duct. 4. Make any changes to the design of the device. 5. Leave the water heater operating without supervision. 6. If there is a risk that the temperature in the apartment will drop below 0 degrees, you need to remove water from the device. 7. Set the water heating temperature higher than recommended. This can cause additional noise during operation and will also increase the formation of scale in the heat exchanger. 8. To prevent scale formation, it is forbidden to dilute hot water with cold water. 9. If the device is operating correctly, there should be no foreign odors present. If there is a smell of gas or burning in the room, you must immediately turn off the gas valve and open all windows. After this, you need to contact the gas service. For safety reasons, it is prohibited to turn electrical appliances on and off and light a fire. This could cause an explosion. 10. For correct operation of the device, it is important that maintenance is carried out at least once every 12 months. It is also recommended to remove dust and soot generated inside the unit. It is necessary to periodically check the tightness of the connections and flush the heat exchanger using special solutions recommended by the factory.
Geysers Neva 4510 M, 4511, 4513, 4610 operate on D, RL20 batteries. It is recommended to install high-capacity alkaline batteries.
The problem only occurs in models that have an automatic protection system built in.
It runs on batteries. Moreover, on such devices the igniter must operate continuously, since it ensures ignition of the main burner. But when hot water is required, ignition occurs as a result of ignition of the air-fuel mixture. First of all, for this, the igniter heats the thermocouple. And moves in the direction of the burner. If the igniter goes out, the column turns off the gas supply behind it for safety reasons. The device is protected by a solenoid valve, a thermocouple and a fuse. You can make sure that the automation is faulty by seeing that after you stop holding the gas control knob, the igniter does not light. Repairing this system requires special knowledge, so it is recommended to contact a service technician.
Mechanism of operation of thermal fuse, thermocouple and valve
A thermocouple is an alloy of conductors made from a variety of metals. The principles of its operation lie in the Seebeck effect. It generates an EMF of 30 mV during the heating process. The thermocouple is designed to feed the solenoid valve. Its design is so simple that breakdowns are very rare. The only thing that is susceptible to defects is the central conductor protruding beyond the thermocouple. It is not secured by anything, and although it is insulated, this insulation can be damaged. This is why sometimes there is a short circuit to the speaker body, as a result of which the speaker goes out. If the contact is broken in the places where the thermocouple is attached to its sockets, you need to buy and install a new thermocouple, since it is impossible to simply solder and restore the contacts.
The solenoid valve of a gas device is a power coil made of insulated copper wire. The connection contains a metal rod connected to a valve that provides shutoff. When the thermocouple reaches the required temperature, electrical current begins to be generated. And the resulting magnetic field sets the coil rod in motion, which ensures the valve operates. After this, gas supply begins. If combustion does not occur and the thermocouple has cooled, it returns to its original position, as the spring presses on it. Gas supply has been stopped.
This simple mechanism ensures the safe operation of gas water heaters Neva 4510 M, 4511, 4513, 4610. Operation is easy to check. A battery with a voltage of 1.5 Volts and a supply of 100 milliamps is connected to the coil winding. For example, you can take an AA battery with a resistance of 10 ohms. When the power supply is connected, the wick should burn, and after turning it off, the fire should go out. If everything works, then the valve is working normally, and the thermocouple is broken.
The thermal fuse is a bimetallic strip, the main function of which is to break the power contact of the solenoid valve if the temperature reaches 90 degrees Celsius. If you are sure that there is enough fresh air in the room for the flame to burn, but the column still turns off, you need to check the thermal fuse. If the window is closed and the hood is running, the appliance may overheat. Good traction will not help in this case, since there is no supply of fresh air. In this situation, the thermal fuse will ensure that the gas is turned off so that the device does not overheat and break down. In order to check whether this is really the reason, you need to disconnect the fuse and short the wires together. If after this manipulation the column begins to work, then you need to install a new thermal fuse.
What could be the reasons for the lack of ignition in models Neva 4510 M, 4511, 4513, 4610
Lack of ignition of the Neva gas water heater is one of the most common problems. When you open the tap, the device does not start heating water. There may be several reasons for this.
1. Water arrives at a pressure lower than required according to the instructions. That is, the sensor cannot convince the water flow. The sensor works on the principle of changing the shape of the membrane under the influence of flow force. In a gas water heater, this problem is solved using a regulator that can control the flow of liquid. 2. Insufficient supply of fresh air to the room. If there is no open window in the room where the device is installed, and there is no access to air from the street, then it begins to overheat.
A protective mechanism against excessive heating is triggered and the gas is blocked. If the air supply is provided within 15 minutes, the device can be started and it will begin to operate in standard mode.
Error E1
This error appears if there is a problem with ignition. This problem occurs in two cases. No gas supply. To eliminate this, you need to make sure that the gas valve is open and there is gas in the line. Problem with the chimney system. The gas pipe may be too long. You need to try to ignite the unit again.
How to find out the reason for the lack of spark
1) The most popular reason for this problem is dead batteries. It is also possible that they are installed with incorrect polarity. 2) Contacts have oxidized. To fix the problem you need to clean them. 3) No traction. The chimney is clogged. in this case, the column’s protective systems are activated and the gas supply is stopped. Checking for traction is very easy. To do this, you need to take out a burning match, or simply put your palm on the chimney. The flame should deflect towards the exhaust gas. You can feel the movement of air with your hand. You can also attach a leaf to one of the ventilation windows. If it sticks, there is traction. If there is no draft, it is necessary to clean the ventilation into the system. 4) A leak has developed in any of the system connections. There must be a tap on the pipe that supplies the radiator of the gas device with water. There should also be a tap on the gas supply pipe. All pipes are connected using union nuts, sealing is ensured by the presence of gaskets. During operation, gaskets tend to lose their elasticity and become deformed, which leads to leakage. It is important to periodically check the gaskets and change them if necessary. If the water pressure is low, the water filter must be checked and cleaned.
Worn membrane, which is located in the water block. In order to access it, it is important to remove the cover from the device. After examining the membrane, you need to make sure that it is not stretched, deformed, or damaged. If defects are found, you need to buy and install a new one.
There is a spark, but the Neva 4510 M, 4511, 4513, 4610 column does not work
Scale may form on the heat exchanger tube. In this case, heat exchange is disrupted and the water does not heat up to the required temperature. The flow of water is also hampered and the pressure decreases. All this increases gas consumption. To prevent this problem from arising, it is recommended to periodically flush the heat exchanger to remove scale. For this purpose, special solutions are used, sold in stores. If it is not possible to obtain these components, you can use a solution of citric acid or vinegar. To wash the heat exchanger, soak it 1/3 full in a tank of water. In this case, the inner tube of the heat exchanger is filled with a warm acid solution. Leave until completely cool. Next, you need to boil the water in the tank for 15 minutes and thoroughly rinse the heat exchanger. All scale should come out with the water. The gas valve is closed. You need to open it.
The gas burner is clogged. To clean it, you must call a service technician. You can independently remove soot from the inner surface of the jets using an iron brush. It is important to make sure that the tightness of the connection is not broken. The batteries are dead. Needs replacement. The water filter located at the inlet of the system or in the faucet mixer is dirty. It needs to be cleaned or replaced.
Temperature adjustment in the Neva 4513 M model occurs as follows:
The handle of the device turns counterclockwise, this leads to an increase in the water temperature. And vice versa accordingly. It is permissible to dilute the water in the mixer by adding cold water.
The flow of water passing through the tap is regulated by a water tap. If the water flow increases, the temperature correspondingly drops, and vice versa.
Shutdown methods
To turn off the device, you must turn off all hot water taps. To ensure safety, it is necessary to visually check that the flame has gone out. Turning off at night follows a slightly different principle.
To do this you need to do the following:
— Close the hot water supply valve. — Close the valve that supplies gas to the device. — Close the cold water supply tap.
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