TOP-5 flow-through geysers with fast heating for several points of water intake

The flowing geyser Zanussi GWH 10 Rivo is a successful and inexpensive European-class solution that will allow you to always have hot water at hand, regardless of water supply conflicts. The model is made in a practical rectangular format and is designed for wall mounting. In the upper part of the casing there is a connection hole for the exhaust manifold made of galvanized steel, which is attached to the chimney with an internal diameter of 110 mm, and a mechanical control panel is located on the front part. Water is heated by a copper heat exchanger with a rated power of 20 kW, and the required temperature is provided by the combustion of natural gas G20. The stainless steel working burner with silent longitudinal nozzles is equipped with an electronic ignition system, the spark for which is provided by a pair of conventional batteries.

In addition to the front panel controls, there is a small backlit digital display. All control comes down to regulating the heating power and the amount of water flow ( thermostat). Change of parameters is carried out by two rotary knobs, and the value of water temperature is displayed on the contrast screen. The maximum flow rate of 10 l / min will allow you to wash dishes in the kitchen and wash in the bathroom at the same time. The water heater can operate in the water pressure range from 0.15 to 8 bar, which allows it to be connected to a cold water supply without additional fittings. The inlet and outlet connections are located at the bottom and have a standard 1/2 inch thread. In the design of the device, much attention is paid to the safety of operation. Protective functions against overheating, overpressure and dry operation are implemented here, and a draft sensor in the chimney and control of the ionization of the burner flame instantly turn off the device in an emergency. The service life of the water heater is about 10 years, and the manufacturer gives a 2-year warranty on it.

The affordable model of the Thermex TY-10A gas instantaneous water heater stands out for its thoughtful design, reliability and safety. The device received a traditional rectangular case with slightly rounded corners and a front panel with a stiffening rib that goes around the top of the control panel and makes it look like a pretty face. The casing with all internal contents weighs 8.5 kg, is easily mounted on the wall and connected to a Ø 110 mm chimney outlet. The water heater runs on natural gas and produces a maximum efficiency of 90%, providing a productivity of heated water supply (Δ t = 25 ° C) up to 10 l / min. This is enough for several people from different points of water intake to be able to use hot water at the same time. The reliable gas-water unit allows automatic soft start and mechanical adjustment of gas flow and water heating temperature, which can be monitored on the red LED display.

The model stands out for its low gas consumption, which is only 1.8 m3/h, which indicates the efficient operation of the reinforced copper heater-heat exchanger with a power of 20 kW. The built-in overheating thermostat does not allow water to heat up above 80 ° C, which protects its tubes from intense scale formation. Upon reaching the maximum temperature value, the device automatically turns off, as well as in the absence of draft in the chimney. In addition, the device is equipped with a flame control system that turns off the gas supply when the burner goes out. A safety valve relieves excess water pressure, preventing the consequences of water hammer. The water heater is capable of stable operation at a water pressure in the inlet pipe of 0.2 - 8 bar. Electronic ignition of the gas burner can be carried out both from 2 batteries and from a 230 V network thanks to the built-in AC to DC converter (3 V at the output).

The flow type geyser Electrolux GWH 10 NanoPlus 2.0 meets all modern requirements and represents the sum of advanced technologies that ensure comfortable and uninterrupted use throughout the life of the device. This is a wall-mounted device with a capacity of 10 l / min, which can completely solve the problem of hot water supply for residents of a small house or apartment. The energy independence of the water heater is due to the preparation of hot water by burning gas in an open combustion chamber (a chimney is required). At the same time, the electronic ignition of the stainless steel burner is carried out from 2 batteries, which automatically create a spark discharge when water is supplied. That is, to turn on the device, simply open the hot water tap and wait 15 seconds until it heats up.

The model is specially designed taking into account the peculiarities of domestic main networks, where there is often a reduced pressure of water and gas. The device is able to turn on with a minimum pressure in the water supply of 0.15 bar and a pressure in the gas pipeline from 6.8 mbar. As a heating element, a heat exchanger made of oxygen-free copper (Oxygen Free) with a power of 20 kW is used, in which there are no heavy metals harmful to the body. The SilentFlow hydraulic unit guarantees silent operation of the water heater due to the elimination of vortex flow at the inlet.

The mechanical control unit with 2 rotary knobs allows you to steplessly change the heating power, as well as smoothly adjust the heating temperature with an accuracy of 1 °C. A multifunctional digital display with backlight displays information about turning on the device, the remaining battery charge and the actual temperature of the heated water. The multi-level security system includes 4 active elements: built-in draft sensor, ionization control of the burner flame, safety thermostat and hydraulic safety valve. Thanks to these functions, the status of the device is continuously monitored and, in the event of a dangerous deviation, it automatically turns off.

Wall-mounted gas "flow" Hotpoint-Ariston FAST R ONM 10 is designed to organize uninterrupted hot water supply to residential premises in the absence of a centralized DHW supply. The model, measuring 55x32.5x21 cm and weighing 8.9 kg, has a rectangular shape, traditional for this class of water heaters, and fits perfectly into the gap between kitchen cabinets or in the free space of the wall. Please note that the body of the device can reach temperatures of up to 85 °C, so close proximity to furniture panels without proper thermal insulation or the required gaps is undesirable. The steel case of the device is painted with white enamel, and a gray plate of the mechanical control panel is installed at the bottom of the front wall. The device operates only on main natural gas (flow rate up to 2.1 m3/h), providing pressurized hot water supply (up to 10 l/min). The device is mounted vertically and is connected to a system of natural removal of combustion products with a diameter of 110 mm.

The heart of the device is a copper heat exchanger with a heating power of 20 kW, through the tubes of which cold water flows. The heating power and the outlet water temperature have the intensity of gas combustion by the burner (10 nozzles) and are adjusted by a mechanical rotary regulator. And the amount of water flow is set by the rotary knob of the flow. At the same time, the stronger the water pressure, the lower its temperature will be, since the increased volume does not have time to quickly warm up in the flow mode. Therefore, in order to obtain a comfortable temperature, it is recommended not to set the maximum value of the water flow. Unfortunately, this model lacks a display to control the heating temperature. For electronic ignition of a gas burner, this model uses alkaline batteries LR20 in the amount of 2 pcs.

The water heater is distinguished by a design adapted to domestic operating conditions with low threshold values for the inlet pressure of gas and water at which it is able to operate: the minimum values are 0.15 bar (water) and 1 mbar (gas). The maximum inlet gas pressure of 8 mbar does not go beyond the standard values, but the peak water pressure of 10 bar distinguishes this model from classmates. The device received a security system, including only thermal protection against overheating and a thrust sensor. After an emergency automatic shutdown, the water heater can be restarted after 10 minutes, which are necessary to cool the device or ventilate the room. This model is manufactured at the company's Chinese factory and comes with a 2-year manufacturer's warranty.

A flowing gas water heater with piezo ignition Atlantic by Innovita Pilot Max 11, developed by the Italian company Innovita SrI, is manufactured at a specialized production facility of Butane Industrial Group in Iran, which also produces Bosch GAZ 6000 WBN series heating gas boilers. The model differs from its counterparts in its capacity increased to 11 l/min at a nominal heating power of 19 kW, due to which domestic water is heated almost instantly. The maximum value of the flow is achieved at the difference between the inlet and outlet temperatures Δ t = 25 °C, and with a water flow rate of up to 5 l / min, it is possible to heat the water by 50 °C compared to the initial one. The model remains operational even at a low water flow rate of 2.5 l / min, which also distinguishes this design from analogue products. The column package includes a strainer for coarse water purification, a battery (battery) and 2 rotary knobs for controlling gas flow and flow.

The device is equipped with a productive tubular copper heat exchanger that is resistant to corrosion and scale deposits. A gas burner with flame modulation guarantees a constant outlet temperature of hot water, regardless of its flow rate, which ensures comfortable operation of the dispenser. The ignition burner of the piezo ignition is switched on manually, and the main gas burner already lights up from it. The multi-level security system consists of overheating sensors (105 °C), flow (less than 2.5 l/min), draft (2 min response time), as well as a burner ignition and flame control system. When the burner flame goes out or the critical values set by the sensors, the column automatically turns off. It should be noted that in order to restart the water heater after an emergency shutdown of the gas, it is necessary to re-ignite the igniter by pressing the appropriate button.