44
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for Technical Support
are other possible causes as well. Corrective measures must be taken if the correct
draft setting cannot be achieved.
If you are unable to adjust the damper door to obtain 0.05 inches WC, there is
not enough draft for proper exhaust. Do not run the boiler under this condition. If you cannot
resolve the issue, call EnergyLogic Technical Services for assistance.
Note: The draft gauge should read 0.0 inches of WC when the draft gauge probe is removed
from the stack (If not, make sure the gauge is level, and readjust the zero knob). If the boiler is
not running, the draft gauge with the probe installed into the stack will read near zero, but
depending on ambient conditions may fluctuate between 0 and 0.03 inches of WC.
The probe may be hot
.
Fuel Pressure Gauge:
The fuel pressure gauge on the pump outlet should read
approximately 3-20 psi, with the higher pressures for longer runs or colder fuel.
If the fuel pressure reading is high, inspect the fuel tubing between the pump and
burner. Look for crimped tubing or obstructions in the preheater or nozzle block
assembly. Repair as necessary.
Vacuum Gauge:
The vacuum gauge on the inlet of the pump should read between 0 and 5
inches of mercury (Hg) for a Side Suction system. For Top Suction systems, the vacuum
reading should be between 1 and 6 inches of Hg.
If the vacuum reading is reading above normal, check the following:
o
Inlet to the suction line is clear of obstructions and all valves are open.
o
Fuel filter must be clean (was it clogged with sludge from the tank?).
o
Oil must be above 50°F (10°C).
o
Review how the pump is mounted (section 3).
Burn Quality
– Visual Check:
When the burner is operating properly, the flame is bright
yellow. To verify the flame color, remove the sight-hole cover on the boiler door, as shown in
the figure. Remove the insulation plug. Insert the insulation plug and close the viewport after
checking the flame. If the flame is other than bright yellow, this indicates improper combustion.
Contact EnergyLogic Technical Service for help.
The boiler door and view port cover are hot. Wear gloves and safety glasses
when inspecting the flame. View from a distance of at least 18 inches (46 cm). Do not leave
viewport open during normal operation.
