Fulton FB-S Horizontal Firetube Boiler User Manual

Page 39

The Fulton Companies*FB-S Series Manual*Version 2010-0820 rev. 3/5/13

Page 39

a) Air Pressure Switch

i. Mounted on the burner, this switch is operated by the pressure of air

entering the burner though the throat of the scroll. Lack of combustion air,

or insufficient air pressure, will stop the switch completing the circuit,

preventing the burner from operating.

b) Air Damper Servomotor

i. The combustion air control system including air damper and a

servomotor. The servomotor is mounted on the burner and directly

coupled to the air damper blade. this system monitors and controls the

combustion air entering the burner on the requirement of the boiler heating

during operating. A fully closed position is provided to prevent air flowing

through the appliance when the burner is not in operation.

c) The Inner Assembly

i. Consist of flame tube, diffuse, oil nozzle, ignition electrode and so on.

d) Oil Nozzle

The oil nozzles are held in a nozzle block located within the flame

tube. The nozzles are pre-sized by the manufacture according with the

heat inputs required and the available operating pressure. When

replacing the nozzles, they must be the same capacity as the original.

Note

When fitting nozzles to the heavy oil burners the nozzle filters must be
removed.
In calculating the correct size of nozzles to be fitted, refer to the specific
burner manual.

Possible Burner Options for FBS