Hi guys.. I have a Burnham boiler and indirect how water heater.. everything was fine until I replaced the two gaskets on the pipe that crosses from the return to supply ports. Now, my DHW demand is constantly on. The return pump runs constantly now. Not sure what I could have messed up. The thermostat on the water heater must work since the valve from the boiler opens and shuts as I adjust the temp... the only thing I know I hit while changing the gaskets was the sensor on top of the return piping that connects to the VS3000... Thoughts?