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Protection de l’installation contre le gel
Vidange du circuit de chauffage
i interrupteur principal
j Robinet de remplissage / vidange
derrière la chaudière.
Comment protéger une installation non utilisée en cas de risque de gel ?
Dans le cas d’un circuit non utilisé risquant d’être soumis au gel, vidangez le
circuit.
Utilisez pour cela le robinet de remplissage / vidange situé derrière la
chaudière. j .
Si la chaudière n’est pas l’élément le plus bas du circuit de chauffage,
l’installation doit obligatoirement être vidangée au niveau le plus bas.
Vérifiez que l’interrupteur principal
i est en position Arrêt.
Vérifiez que le robinet de remplissage / vidange est fermé.
Raccordez un tuyau au robinet de remplissage / vidange (10).
Installez l’autre extrémité du tuyau dans une trappe d’évacuation au sol ou
un autre point d’écoulement.
Ouvrez maintenant le robinet de remplissage / vidange j , en le tournant
de 90°.
Ouvrez les orifices de purge d’air des radiateurs (en commençant par
l’élément le plus éloigné).
Aucune dépression ne doit se former dans le circuit de chauffage et la
totalité de l’eau doit être vidangée, si possible.
Laissez le robinet de remplissage / vidange ouvert.
Enfin d’éviter tout risque de gel, veillez vidanger toute l’eau chaude
sanitaire des conduites.
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