Install Instructions

36
20.1 Combustion
A. Nozzles- See “17 - Oil Burner, Nozzle, & Air Settings”
on page 31.
B. Fuel leaks - Any fuel leak between pump and nozzle
is detrimental to good combustion results. Look for
wet surfaces in air tube, under ignitor, and around air
inlet. Repair any such leaks as they may cause erratic
burning of fuel and in extreme case may become re
hazard.
C. Dirt - Fuel lter is required to prevent clogging nozzle
or nozzle strainer and produce poor spray pattern
from nozzle.
D. Water - Water in fuel in large amounts will stall fuel
pump. Water in fuel in smaller amounts will cause
excessive wear on pump. Water doesn’t burn, it chills
the ame and causes smoke and unburned fuel to
pass out of the combustion chamber and clog ue
ways of the boiler.
E. Cold Oil - If oil temperature approaching fuel pump is
40°F or cooler, poor combustion or delayed ignition
may result. Outside fuel tank above grade or fuel lines
in shallow bury may be the cause.
F. High Altitude Installation - Air openings must be
increased at higher altitudes. Use combustion analyzer
and set to 11.5% for initial setting.
G. Start up noise - Late ignition is cause of start up
noises. If it occurs recheck for electrode settings,
ame shape, air or water in fuel lines.
To isolate fuel problems: disconnect fuel system and re
out of auxiliary container of clean, fresh, warm #2 fuel
oil from another source. If burner runs successfully when
drawing out of container problem is in fuel or fuel lines.
20 - TROUBLESHOOTING
PN 473900000