Form 465, Page 42
Bleed oil from
burner tee bleeder
for ten minutes.
Is stream of oil
perfectly solid and
continuous with no
sign of air?
Are the flue
passageways restricted
with ash?
Clean the combustion
chamber and flue
passageways .
Is the fuel of a
type specified for this
boil er?
Is the
overfire and flue
draft correct?
Is the CO2
adjustment correct?
Check the air supply
from the compressor to
the nozzle for leaks and
restrictions.
Check the end cone
for deterioration
and/or restrictions.
Check oil delivery
system. See Chart
No. 7.
Adjust for proper
CO2.
Adjust barometric
damper and/or clean
draft inducer.
Change to a
suitable fuel.
Run vacuum
test on suction line to
check for air leaks. Did suction
line pass vacuum
test?
Repair suction line
leak.
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
Troubleshooting
Continued
Chart No. 5 - Thermostat calling for heat.
Burner operation erratic/unstable flame
pattern.
Refer to illustration on page 36