aco 32 RFFI - expansion vessel & pressure valve

[Senna]

Hi,

I wonder if someone can help, please? I have a boiler ACO 32 RFFI that use to work at circa 1bar. I shut down the system (including the cold water inlet) for holidays and when I turn on again (after holidays) the pressure has gone to 3bars. As expected the pressure valve kicked in and start to drip water outside. Now it keeps dripping even below 3bars. I read that they usually do not seal properly after this, so I got a new one. However, I suspect that was the expansion vessel that lost the pressure and start the whole story. Keen to understand if that was the case before I put the new pressure safety valve. Can I recharge the system easy (it come pre charged from factory 0.7bar)? I thought I should try this before assuming that I have to get a new one because I had a rupture. Many thanks if you are able to help.

 

[justlead1]

Hi On the vessels i have come across a recharging point under rubber at top of dome allows the fitting of a car tyre type foot pump for adding pressure. (Although factory gas is probably nitrogen)

 

[Senna]

Thank you justlead1. I have fixed the boiler. In the end I changed the safety pressure valve and checked the expansion vessel and all is good (and warm!) now.