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Everything you need to know from P to W

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Pressure jet gas burner
This is a mechanical burner which diffuses gas / air in the combustion chamber. This process is typically used in medium and high-power installations, and less so in low-power ones. It can be used to transform a fuel oil burner into a gas fired boiler.

The power of a boiler (in kiloWatts), refers to the useful output effectively transmitted to the heating water inside the boiler. Domestic boilers provide power between 10 and 50 kW of usefull output. Above this level, we get boilers of medium or high power, destined for use in large homes, collective accommodation, administrative buildings, schools or even small and medium-sized businesses.

Polluting emissions
This is the residue released by the combustion of gases, essentially carbon monoxide (CO2) and nitrogen oxide (NOx), which both contribute to the Greenhouse effect. Modern boilers consume far less energy and provide a much cleaner combustion, emitting three times less polluting substances than old-generation boilers.

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Room temperature sensor
The control system modulates the boiler’s temperature according to information that it collects from different sensors and pre-set comfort requirements. However it does not control the outcome, i.e. the ambient temperature. One option is to install a room temperature sensor in a neutral area of the house, away from sunlight, draft and far away from a radiator. This sensor is linked up to the control system and adjusts it according to the real ambient temperature. An alternative option is to install a thermostatic valve on all the radiators to regulate the temperature emitted by the radiator.

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Safety unit on an independent tank

Fitting a safety unit at the cold water inlet on a domestic hot water accumulation tank is compulsory. The safety unit provides three functions :
  • a safety valve which discharges excess water that is created during the heating process
  • a stop valve
  • a drain valve. 
Safety unit a heating circuit
On installations with a closed water circuit, the safety unit has three key components : the manometer which indicates the pressure of the water in the installation, the safety valve which prevents overpressure, and the bleeding device which is used to discharge air trapped in the pipes. 

Single function (boiler)
A single function boiler is generally used as a heating-only installation and does not have incorporated hot water production. It can however be used with an independent domestic hot water tank.

Smoke circuit
The smoke circuit is the path taken by the smoke through to the exit. A long smoke circuit with several bends allows for quiet operation.

Stainess steel
The heating body for floor-standing boilers can be made of cast iron or stainless steel. The thick steel (4 mm) used by De Dietrich guarantees a high resistance to mechanical stress.

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This is a process where the hot water produced by the boiler is moved around by the difference in density. This process is only applied to installations that use solid fuel (wood or coal).

Thermostatic valve
The thermostatic valve directly controls the flow of the radiator’s hot water on which it is assembled in order to achieve a desired temperature. It adapts to the ambient temperature of the room in which it is installed. It is particularly useful for rooms with other heat sources (sunlight, cooking equipment...).

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Wall-hung boiler
A wall-hung boiler is a particularly suitable heating solution for apartments or smaller houses. It can be used for domestic hot water production. It responds to  a need for space saving. It is more compact and lighter than a floor-standing boiler and frees up floor space. It can be installed easily in a kitchen, bathroom, cupboard or attic.