Do you have zone valves, or pumps that are controlled by "there should
be 2" thermostats 180 degree temp sounds OK. When the boiler reaches
180 degrees the burner should shut off but the pump or pumps should
stay running until the room temps have reached the setting on the
t-stat. Check to see if the zone valves are open all the way (there is
a dial on the body of each zone valve) so you can open these manually.
The pumps could be bad or the Zone Valves could be bad!!!
Good Luck