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After six months of inoperative, relighting your heaters should be done safely. Especially if they are not regularly maintained. To avoid an accident, this is what you need to know. Chimney pipes poorly or not swept, domestic fires, carbon monoxide poisoning ... There are no less than 22,000 accidents related to heating appliances each year that could be avoided. So for a safe restart, it is better to follow a few simple but proven rules.
The case of hot water radiators
Any hot water radiator, regardless of the material in which it was made (aluminum, steel, cast iron) must be vented once a year before restarting the heating. This removes the air present in the pipes where only water must be present. When air is present, it is common to hear noises from the radiators. They can also find it difficult to heat in the upper part, the water having trouble going up there. Consider especially purging the radiators if you live in a building with a central heating installation, even more if your apartment is located on a high floor.
How to purge your hot water radiator
The most recent installations (for the past thirty years) are equipped with an often automatic vent valve, installed directly on the boiler. Many radiators also have automatic air vents which do not require intervention. It is not worth purging all the radiators. Air collects in those placed at the end of the network or on the top floor. The central heating must be turned off. The easiest way is to set the boiler to the "summer" position and wait until the radiators are cold. There is a tap at the top of the radiator. The bleed screw is located at the other end. It is a small brass knob or a kind of hexagonal hollow bolt. Use pliers to unscrew the wheel. For the bolt, a special butterfly wrench is required. Place your container under the drain screw. Unlock it a quarter of a turn, then continue to unlock it slowly until you hear a hissing sound. It is the air which is evacuated. After a few moments, the trap also spits water. Leave the drain still open for a few seconds and then close it by hand tightening, without forcing. If a small drop pearls after closing, it does not matter. But if the water continues to flow continuously, the purge target must be replaced. Better to contact your plumber.
Maintenance of electric convectors
Electric radiators and convectors require simple maintenance. It is sufficient to regularly remove the dust from the air inlets and outlets using a dry or slightly damp cloth. This will avoid the burning smell characteristic of an appliance that is not well cared for. In the event of a malfunction of the device, call a professional.
Maintenance of his gas boiler
It is important to have your gas boiler checked once a year by a professional. The ideal is to subscribe to a service and maintenance contract with a specialized company. She will send someone twice a year (before start-up then after the cold season) who will ensure the good condition of your boiler: general condition, condition of the burner, tightness of the flues ... In the event of a problem with operating during the winter, the company also sends a professional to carry out checks and repairs.
A poorly maintained chimney poses a risk of fire, smoke poisoning and carbon monoxide. This is why it is important to have your chimney swept every year if you use it regularly. To do this, call a professional. Once the sweeping is done, ask for a "Sweeping Certificate", which will prove the conformity of your chimney and will be very useful with your insurer in case of disaster.
Pay attention to ventilation
A house must be well ventilated to be healthy but also to ensure the proper functioning of heating appliances, especially fireplaces. Likewise, for a boiler, the air must circulate correctly to enter the boiler and allow the combustion of the atmospheric gas burner. Be careful, therefore, to dust and remove the grease that may clog the ventilation openings. Just tighten it by hand, without forcing it, like you would a standard tap. If a small drop pearls after closing, it doesn't matter. On the other hand, if the flow is continuous, if you have to force to stop it, you must replace the purge target. Talk to your plumber.