EnergyLogic EL-140H, Installation & Operation Manual, Page: 46 / 96

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 3-30 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 (including fire stop
valve) 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 compared to the instructions.
Burn Quality – Visual Check: When the burner is operating properly, the flame is bright
yellow. To verify the flame color, rotate the viewport cover on the burner door clockwise, as
shown in figure. View from a distance of at least 18 inches (46 cm). 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 burner 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).
Visual Flame Inspection
View Port Cover
40
Call 1-615-471-5290 for Technical Support