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Neutralizzatore di condensa
Neutralizzatore di condensa
Le nuove caldaie a condensazione hanno introdotto la necessità di curare anche lâaspetto dellâacqua di condensa. Nel caso in cui si prevede produzione di condensa, è necessario smaltirla in apposito sistema di raccolta ed evacuazione, realizzato in modo da impedire la fuoriuscita dei prodotti gassosi della combustione in fogna, ed evitare che eventuali variazione della pressione all’interno della rete fognaria influiscano negativamente sul funzionamento della caldaia.
La UNI 11528:2014 punto 8.1 specifica che il sistema di neutralizzazione della condensa è obbligatorio per caldaie con potenza > 200 kW, per potenze comprese tra 35 e 200 kW dipende dal numero degli appartamenti (applicazioni residenziali) oppure degli utilizzatori (applicazioni non residenziali). Infine per caldaie con potenza < 35 kW non è richiesto.
Ad esempio per un impianto termico da 115 kW e 8 abitazioni residenziali, il sistema di neutralizzazione della condensa non è obbligatorio.
Riferimento normativo
UNI 11528:2014: âTitolo : Impianti a gas di portata termica maggiore di 35 kW – Progettazione, installazione e messa in servizioâ del 20/02/2014. La norma fornisce i criteri per la progettazione, l’installazione e la messa in servizio degli impianti civili extra-domestici a gas della 1a, 2a e 3a famiglia, nonché alla installazione di apparecchi installati in batteria o in cascata qualora la portata termica complessiva risulti maggiore di 35 kW. La norma si applica anche ai rifacimenti di impianti civili extra-domestici o parte di essi. La norma non si applica agli impianti a gas realizzati specificatamente per essere inseriti in cicli di lavorazione industriale e a quelli trattati dalla UNI 8723.