Electrodes are the main component for ignition and flame detection in modern boilers. They are divided into detection electrodes and ignition electrodes, located near the burner, and report to the ignition and modulation board about the burner’s flame status.
In room temperature regulation, there are two types of devices: the Thermostat and the Programmable Thermostat.
Regulation can occur room by room, in this sense, the common thermostat is used which adapts well to underfloor heating or to offices equipped with a fan coil (convector) for each room.
Conversely, the programmable thermostat also includes a clock, which can be daily or weekly depending on the model. The programmable thermostat controls the entire system and the operation of all radiators based on the set programs.
The boiler is the primary system for heat production within your home. In this section, we present the manuals for the boilers we assist. It’s always good to have a printed manual handy for adjustments, problems, or possible inspections.
Types of Boilers
Boilers, both modern and recent models, are differentiated by their type, we have:
- Type B low-performance boilers: Also called open chamber boilers or natural ventilation boilers
- Type C low-performance boilers: Also called sealed chamber boilers or forced ventilation boilers
- Type C high-performance boilers: Usually condensing boilers
Open Chamber Boilers
These have strict regulations regarding installation and operation. During the maintenance of these boilers, it is always checked:
- That the environmental ventilation duct exists and is free from obstructions
- That the draft or depression of the chimney where the open chamber boiler is connected, expressed in Pascal, is positive (depression) and exceeds 3 Pascal.
- That the performance is higher than that required by law
- That there are no gas leaks in the environment
Forced Ventilation Boilers
In addition to the common checks for gas connection tightness, these sealed chamber boilers must meet the performance requirements like open chamber boilers. It is also checked:
- That the exhaust and ventilation connections are correctly connected
- The exhaust must follow the chimney through a dedicated, sealed tube
- The ventilation duct (incoming air) must be connected to the outside
Condensing Boilers
New condensing boilers allow greater efficiencies thanks to the recovery of heat from the fumes. In fact, compared to traditional sealed chamber boilers, condensing boilers have lower flue gas temperatures (up to 35-40). The efficiencies are higher, but all the water vapor from the combustion, also known as condensate, must be discharged. Therefore, by regulation:
- The condensate discharge duct of the condensing unit must be discharged without the possibility of recovery by the user
- You cannot discharge into a tank!
- The condensate water cannot be reused!
- If the drain is sensitive to acidity, the condensate must be neutralized with an accessory, the acidity neutralizer.
Magnetic dirt filters are tools dedicated to cleaning heating circuits. Using a combination of stainless steel meshes and neodymium magnets, these devices can retain both magnetic and non-magnetic particles. Models like the Caleffi XS are designed to be installed directly under the boiler, ensuring continuous filtering action and contributing to the health of the entire system, reducing wear on components and improving energy efficiency.