To the benefits of civilization (elevator, hot water supply, sewage, central heating) a person gets used to it quickly. But what if, due to any circumstances, there are problems with hot water in the house? In this case, it is advisable to purchase a instantaneous water heater on a tap.
Water heating in such a device occurs when it flows through a small container, in which there is a compact but powerful electric heater. The advantage of this device is that electricity is consumed only during its operation. The main characteristic that the instantaneous water heater has on the tap is productivity, i.e. how much he can give out water of a certain temperature for a specific period of time. It is measured in l / min (liters per minute). Naturally, the performance of this device is directly proportional to the initial temperature of the water stream at the inlet (which can vary from 5 to 20 ° C) and the power of the heating element. Instantaneous
electric water heater on the tap heats the water literally instantly. How much it should be warm is regulated by a change in pressure. The standard model usually provides two knobs: to control the flow rate and set the desired temperature.
Depending on the power, these devices are divided into several classes of energy consumption. A flowing water heater-nozzle for a tap having a power of 3.5 kW or less is the least functional option. It is usually installed only when the inlet water temperature is not lower than 18 ° C. More powerful options (the most common - 5 kW, less often - 7 kW) can cope with the flow even the coldest, and therefore they can be used year-round. By the way, on some models there is an electronic display that displays the current temperature.
What does the instantaneous water heater on the tap consist of?
The composition includes:
- Heating element. Usually this is a tubular electric heater (TEN) made of copper or steel.
- Pressure switch. Does not allow the heating element to turn on in the absence of water.
- Thermal sensor. When overheated, it trips to shutdown.
- Flow switch. It supplies power to the heating element when fluid flows through it.
- Power switch.
- Nozzle on the crane - spout. The presence of holes and a smaller diameter of the cross section of the spout at the outlet create additional resistance to water, which allows the heating element to be used more efficiently.
Any instantaneous water heater on the tap has the following features:
- Compact size, which greatly facilitates the installation of the device, its connection and further operation.
- Local area of use. Usually installed on only one connection point.
- Low sensitivity to the quality of water containing a small amount of salts.
- Large power consumption and, consequently, high energy consumption.
What is important to know when installing a instantaneous water heater?
The instantaneous water heater on the tap is an electric device of high power, and therefore, when installing it, it is necessary to lay separate wiring and grounding. It is advisable that this is done by a specialist. The wiring available in the room must be rated for a current of at least 30 amperes.