ASTEC PHOENIX Talon, Operation And Service Manual, Page: 20 / 31

PHOENIX Talon - Operation and Service Manual
20
Heavy Oil Fuel Piping System
WARNING!
Be very careful with Heavy oil:

Heavy oil has to be heated to lower its viscosity for proper atomization.

Do not heat the Heavy oil higher that it’s vapor point, to avoid fire.

Contact with the hot oil, or piping, can cause a severe burns.
Illustration 9 - Heavy Oil Piping Schematic
1.
Your burner should fire on all commercially available heavy oils.
2. Proper fuel viscosity is required for satisfactory atomization and combustion of heavy oil.
a.
The viscosity of the oil must be 80 SSU (Saybolt Seconds Universal), or lower.
b. Use the included Viscometer, (ships in 5 gallon bucket with burner), or other suitable device to
determine the proper oil temperature to achieve this viscosity.
NOTE: Every shipment of oil must be individually tested.
c.
Check the fuel specifications to check the vapor point of the fuel.
d.
For better combustion the viscosity can be lower than the 80 SSU maximum, which means a
higher oil temperature.
e. Never heat the oil above 220º F or 10º F below the vapor point of the fuel, whichever is lower.
f.
The oil temperature switch must be adjusted to the minimum temperature for good atomization for
the particular oil being used.
NOTE: For heavier oils this setting will be hotter than the factory setting.
g.
Make sure the fuel is not forming vapor (steam) pockets in the oil lines.
h. These vapor pockets can cause the pump to cavitate, causing damage to it.
i.
Vapor pockets can also interrupt fuel flow causing the burner to falter.