Content of the article:
The instantaneous gas water heater will always have warm water in the tap. Natural gas is much cheaper than electrical energy. In dwellings with no hot water supply, a compact gas water heater will create additional convenience. There are special conditions for the safe use of natural gas, they should be observed. If the area is gasified, there is a gas kitchen stove in the apartment, then it is not difficult to install a gas water heater of running or storage type.
Device and selection criteria for a flow-through water heater
The principle of operation of a flow-through water heater consists in heating the coil with water with an open flame. Difficulties in the thermal and hydraulic design of the instant heating system. In the design process, issues are addressed:
- ratio of the amount of gas for combustion, temperature and water flow at the outlet;
- sufficient intake of air for complete combustion of fuel and removal of combustion products;
- instantaneous ignition of a gas burner when fluid moves through a heat exchanger;
- compact and aesthetic installation, and convenient maintenance.
All columns are designed for different water consumption and heating temperature. To ensure the required parameters, modulated burners are used, which themselves regulate the gas flow depending on the set parameters. Instant ignition is carried out by an electric spark from a built-in battery, by the Hydropower system or manually. The more complex the control and monitoring system, the higher the characteristics of the instantaneous water heater, the price of the device is higher.
Criteria for the selection of the device. The main indicator for devices of this type is power. Household speakers produce:
|Power, kW||At the output of the t / o 50 ° C||At the exit of the t / o 25 ° C|
|19 - small||5 l / min||11.5 l / minl / min.||14 l / min.|
|28 - high||8 l / min.||16 l / min.|
An important function is the ignition system:
- piezo ignition - ignition igniter, which ignites the burner;
- electric ignition - a spark from the battery is supplied when the crane is turned on;
- hydrogenerator sparks a turbine driven by a stream of water;
- electronic ignition.
The air supply and exhaust system for combustion products is determined by the design of the combustion gas flow heater chamber. In an open combustion chamber, gases are removed through the ventilation system. The chimney-free chamber is equipped with a forced air supply, in which combustion takes place at 100%.Such speakers are expensive.
Additional equipment necessary for safety and sustainable operation of the heater:
- flame control system, which turns off the gas if the flame in the burner is extinguished;
- lock on the absence or change of direction of thrust;
- column overheating block;
- scale builder.
How to choose a instantaneous water heater correctly, knowledge of the basic characteristics of the equipment will help. The design of the burners depends on the type of fuel - natural or liquefied gas will be fed to the combustion.
Rules for the installation of flow-through water heaters
The installation of any gas equipment is carried out with the preliminary drafting of the project in a specialized organization. If earlier a gas heater was installed in the apartment, the installation at the same place will not cause difficulties and the device will be put into operation by GorGaz. How to connect newly installed instantaneous water heater?
Natural and liquefied gas is odorless. To determine the leaks in the product add methyl mercaptans, gases formed during the production of cellulose. Leak is detected by an unpleasant smell in the apartment. Find leaks can be wetted with soapy water at the junction of gas pipes. Intense foam formation will begin at the site of damage to the seal.
First, the installation location is determined, and the chimney is mounted. Installation canopy is carried out under the hood using anchors and fastening the inlet gas pipe to the column housing. The kit includes a suitable cap nut and gas fitting.
Also connect the device to the water line. For a non-flue gas instantaneous water heater requires special conditions for ventilation of the room. Outdoor combustion products must not fall into the open windows of neighboring apartments.
For safety reasons, gas water heaters must not be installed above the stove. The device must stand at a height inaccessible to children who do not know how to use the device.
Proceeding from the above, the installation of a gas column by the supervisory authorities is not welcome. The simultaneous shutdown of highways water and gas, tie-in tees, connection to highways entrusted to experts.
Reliable equipment from well-known manufacturers
Among the huge selection of gas water heaters, it is important to find the only one that suits the quality, reliability, options. Equipment known, proven in the market of firms, a variety of models inspires confidence. But it is necessary to look not only at the brand, at the country of the manufacturer. Production of well-known brands is shifted to China, and this does not add reliability to products.
Product description of the company Bosh
A well-known manufacturer of household appliances and tools, the German company Robert Bosch GmbH is engaged in the production of gas instantaneous water heaters Bosh. All equipment has a thoughtful design and functionality. One series is supplied with burners for liquefied or natural gas. However, it should be noted that for this line of equipment, service centers in the country are few and spare parts are expensive. Therefore, it is necessary to strictly follow the installation and operating instructions of the device.
As an example of reliable water heater with positive feedback, we offer the model BOSCH WR 10-2P.For people who value functionality, simplicity and security, this is the right choice. Users note almost silent burning, compactness of the device. The intensity of the flame is regulated manually. The column is equipped with automatic ignition when opening the valve without batteries. However, users have noted the rapid overgrowth of the tubes.
Electrolux gas water heaters
Electrolux is the leader in the production of gas water heaters. Reasonableness of the composition, a large product line, ergonomics, well-thought-out protection system at a low cost - the company's policy. The devices are not demanding on the quality of water. The manufacturer pays special attention to the safety of flow-through systems, having introduced the built-in Inverter Control to prevent leakage in recent developments. Copper coil, made by special technology, little susceptible to corrosion. The table informs about the price / performance ratio of the models:
|Flow-through water heater model Electrolux||Power, kW||L / min consumption.||Average price, rubles|
|GWH 350 RN, piezo ignition||24.4||14||11 thousand.|
| GWH 285 ERN Nano Pro, electrical engineering;Without trade margins, you can in the dealer centers, which are available in all major cities of the country.
Equipment for heating water from the company “Gorenie”
A well-known manufacturer from Slovenia presents products of its own production, without the participation of third countries. Gas water heaters Gorenje are supplied in a small range, but at a affordable price and high quality. As an example, consider the technical description of the gas flow heater gas Gorenje GWH 10NNBW cost 7,500 rubles.
The speaker automatically adjusts to the change of network parameters, has a powerful lock for any emergency situations:
The front panel has a display, Copper heat exchanger with a reinforced loop. Case size 32.7x59x18 cm, the device takes up little space.
The products of the Neva companyA large assortment of flowing gas water heaters Neva using liquefied fuel and natural gas is represented by the company in various price categories. However, decent models with adequate value can not always be found. Not yet earned the credibility of the brand, commercial enterprises order little. As an example of an inexpensive device, one can cite the Neva 4511, which costs 8400 rubles, the model that won first place in the price-quality rating, and the Neva Lux 5514, which took the 4th place. Equipment with high performance, allowing you to use the bathroom, and easy to maintain.