Currently I have a vented copper cylinder, but have recently discovered that the coil is leaking into the DHW, so needs replacing. I would like to keep it un-vented with header tank as my incoming water pressure is very weak/low flow rate.
I have a new Ariston WRc-NSF un-vented cylinder at my disposal (free) and would like to use this if possible. Is it possible to use an un-vented cylinder as a vented one?
As far as I am aware - yes. The only difference is that the unvented ones are specified as pressure vessels, and have all the safety stuff on them - WHich you may want to strip off and plug off
Tim
