Gas water heater

JUNKERS gas water heaters have been valued devices among Estonian consumers for many years. Today, the situation has changed, as Robert Bosch, whose trademark is Junkers, abandoned the use of this name in the Baltic States, replacing gas water heaters with BOSCH 4000 series units.

IMMERGAS has also been producing gas water heaters for a long time – for more than 50 years, and these devices, like Bosch’s, use gas burner cooling as a new technical solution in accordance with European requirements. This ensures lower emissions of nitrogen compounds into the atmosphere. The equipment we sell is all such that the combustion residues must be led to the chimney with natural draft.

The most important parameter of a gas water heater is its capacity. It depends on how much hot water you can get. Water heating is most difficult in the heart of winter when the temperature of the incoming cold water is + 4… + 5 ºC. In order to raise the temperature by 35 ºC (to +40 ºC) and achieve hot water productivity
10 l / min, a water heater with a capacity of at least 24 kW (350 kcal / min) is required. The power and dimensions of the devices are related: the more powerful device also has slightly larger dimensions.

The combustion residues of the gas are directed to the chimney, to the duct intended only for gas smoke. All water heaters sold today have a draft sensor that switches off the appliance in the event of insufficient draft. In addition, it is mandatory to install a CO sensor in a room with a gas water heater in Estonia, because the carbon monoxide device does not detect carbon monoxide generated as a result of incomplete combustion.

All recent years’ models have flame modulation, which ensures that the gas flame is reduced at low water consumption and thus the leaving water temperature is kept constant. However, it is not recommended to choose a lever faucet as a shower faucet, as it is cumbersome to compensate for possible temperature fluctuations.

The main burner of the gas water heater is always ignited by the pilot flame, but there are several ways to ignite the pilot flame. On cheaper devices, the alarm flame is ignited manually from the spark generated by pressing the piezo button. In the case of electron-ignition devices, the energy required to generate the spark and to ignite the flame is taken from the batteries or hydrogenerator, which provides the necessary electrical voltage in the event of a water flow.
When installing all equipment, of course, the local installation requirements, ie those in force in Estonia, must be observed.