H
Hot&Cold
good comment but from the configuration photos which is all we have to go by there would be an opportunity of spew over during different operating situations.again from the photos there are photos of poor upgrade in many aspects which would not help with any insurance claim.But it's an old system, and surely hasn't been pumping over for the last thirty years. All the rads would have rusted away by now.
Sorry its a poor install.Buy a combi/joule system