I've got a line on used Tarm Excel - not sure if it's the 2000 or 2200 that is owned by a colleague of mine. It's got an oil burner in it and his insurance company is making him replace the tanks so he's going to go with propane instead. It's at his cottage which I think at one point he was going to live at but now is just keeping as a cottage so wood doesn't make sense. It's ten years old and I suspect was set up properly with return temp protection but will verify that. I have a new propane boiler that I will be keeping but I'm wondering if there is an issue with either removing the oil burner and covering it with a plate or just leaving it there - no oil so it won't be used. Any thoughts? He's not sure what it's worth and neither am I - but it's ten years old so I suspect not a great deal.