Bosch Greenstar Jnr. 28 2 bedroom semi & 5 large rads. I used my PRV and now it's leaking.(as they do) I had incorrect Expansion Vessel pressure adjustment problems which caused 5-6 events near the 3 bar and loss of water. This was over a year ago & I didn't add inhibitor knowing it would be lost. Thing is, the loss of water hardly registers on the dial. Is the EV compensating or what? I drained a jar of water from the lowest rad. and it looks pretty clear. In a forum it was cited that the Bosch engineers drill the rivets out of the frame to gain access to the PVR - feasible? Also is adding an extra inline PVR rather than replace a viable option. If so, what type & connector options But, in series - Could that lead to a chance of 6 bar & danger? Thanks
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