In order to talk about heaters, it is important to know how they work. The heaters, as their name suggests, heat water for domestic use using natural gas or propane / butane gas. The cold water passes through a coil that, in turn, passes through a burner that works by combustion of gas. Once the water is hot, it is distributed through a pipe system to the point of consumption (tap, shower, bathtub, etc.).
Unlimited and immediate hot water
Instantaneous gas heaters allow you to obtain hot water in an unlimited and practically immediate way.
By not depending on a tank, as is the case with electric water heaters, hot water does not run out while the tap is open. In addition, you will hardly have to wait a couple of minutes to have hot water, being a very comfortable option to meet the daily demands for the shower, bathroom or kitchen in our homes.
Even so, the heaters have a production limit of liters per minute (flow rate). This figure varies by model. Typically, it is between 5 and 17 l / min. The ideal is to consult a professional installer to recommend the equipment that best suits the needs of our home, since to calculate the flow that your house needs, you must take into account the number of people who live there and the number of water consumption points (bathrooms, kitchen and sink) of the house.
Types of gas heaters
The greater or lesser efficiency of gas heaters is directly linked to the chosen model. We can distinguish between:
According to its ignition: manual or electronic heaters
The first are the most basic and economical. However, the burner is activated manually (with a match or lighter), so they are less
practical today.
The so-called “electronic” heaters turn on automatically when you turn on the tap. They are very comfortable and need battery or hydrogenerator power, whose ignition is automatic when you open the tap.
According to their operation: atmospheric or watertight heaters
In atmospheric heaters, combustion takes place in an open chamber, taking in the air from the room where they are installed and expelling the gases outside. With watertight heaters, combustion takes place in a hermetically sealed watertight chamber and both air intake and gas evacuation are done outside.
Since April 2018, according to RD 238/2013, which modified articles and technical instructions of the RITE (Regulation of Thermal Installations), the installation of an atmospheric heater in homes is not allowed, but it is allowed outdoors or in well-ventilated places (facades , open galleries, balconies, terraces, etc.) according to UNE 60670-6: 2014 and provided that the installation and ventilation conditions are met, and in turn it has been approved as an exception by the respective autonomous community.
What is a “low NOx” atmospheric heater?
Nitrogen oxides are a group of gases composed of nitric oxide (NO) and nitrogen dioxide (NO 2). The term NOx refers to the combination of both substances.
The burning of fuel is one of the main causes of the production of NOx gases, which are very harmful to the planet and to people, since they accelerate global warming and are direct causes of acid rain or some respiratory diseases.
In keeping with the Bosch Group's commitment to the environment, Junkers Bosch has launched its new range of Junkers Hydro low NOx atmospheric heaters.
This range returns to the market after the publication of the new European ErP Regulation of February 2020 that allows the installation of atmospheric heaters in outdoor spaces in order to avoid difficulties in the evacuation of burnt gases that some installations present.
In this way, users who need it, can replace their old heaters with new models with many more features in addition to low NOx gas emissions. However, it must be borne in mind that this equipment cannot be installed in newly built homes.
What's new in the Junkers Hydro range?
The Hydro 4200 and Hydro 4300 atmospheric heaters have been manufactured to offer users the best comfort, efficiency and safety.
Simple to install and easy to replace, they incorporate technologies such as automatic flame modulation, additional safety sensors, LED operation indicators, electronic ignition by batteries or hydrogenerator, and low NOx emissions.
Among its main advantages we highlight:
Energy efficiency class A to guarantee greater savings and efficiency.
Easy installation, replacement and maintenance (the usual cold water, hot water and gas connections are maintained at Junkers Bosch).
Thermostatic control.
Ergonomic design.
It does not need to be connected to the electrical network, battery operation or hydrogenerator.
Learn more about our Hydro low NOx atmospheric heaters at this link and check the installation conditions. Currently, Autonomous Communities such as Andalusia and Catalonia allow the installation of atmospheric heaters outdoors.
Our bets, for Junkers and Neckar.
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