Boiler Operation Sequence - Fix it with our Plumbers Fault
Open the vent valve on top of the boiler, open the makeup water valve, and fill the boiler. When the boiler is filled, close the vent valve. Begin on the lowest floor of the building and open the vent on each radiator or convector, one at a time, until the water flows out. Close the vent.
Hot Water Heating Boiler Operation Details - 39 steps in
The coil on the circulator pump relay energizes closing the contacts for the relay, and the circulator comes to life and begins circulating water through the loop. That circulates hot water from the boiler to the single zone (the entire house). The water inside the boiler is 180 degrees Fahrenheit.
Water Tube Boiler Operation | DoItYourself.com
In the U.S. an oil fired boiler is turned on and off by the aquastat control. The thermostat starts the circulator; as water temperature returning to the boiler drops it to the cut in temperature the aquastat turns on the boiler. For a warm air furnace the thermostat turns on the burner, the plenum heats up, and the fan limit turns on the blower.
Hot Water Boiler Sequence of Operation Aquastats