It sounds like there could be a lot of air in the system that is causing flow issues and heat transfer. The discharge from the overflow when the system temperature was turned up could be a sign of thermal expansion or an expansion tank issue. It sounds like an air issue in the system a good air separator may be needed.
It sounds like there could be a lot of air in the system that is causing flow issues and heat transfer. The discharge from the overflow when the system temperature was turned up could be a sign of thermal expansion or an expansion tank issue. It sounds like an air issue in the system a good air separator may be needed.