Lennox COWB2

26
OIL BOILER CLEANING:
1. Shut off all electrical power to the boiler / burner
and shut off fuel oil supply.
2. Remove the vent pipe from the top of the
boiler. Inspect the pipe and chimney for
signs of corrosion and deterioration. Clean
out the base of the chimney. If the vent pipe
shows any signs of corrosion or deterioration,
replace it immediately. If chimney damage or
deterioration is discovered, contact a competent
professional.
3. Remove the top jacket panel screws (5), the
brass wing nuts (2) holding the ue collector
top, and then the ue collector top. Inspect the
gasket on the underside of the ue collector
and replace as necessary.
4. Before beginning to clean the ue passageways,
ensure that the combustion chamber blanket is
covered. If the blanket is not covered prior to
cleaning, replace the blanket once cleaning is
completed.
5. Now with access to the ue passageways,
remove the soot from the reside surfaces by
brushing diagonally through the ue passages
(see drawing below). Brushing can be made
easier by cutting the end of the ue brush off
and inserting it into a drill. When brushing, care
should be taken so as not to damage the target
wall with the ue brush.
6. Carefully vacuum the soot accumulations
from the combustion chamber area, being
particularly careful to not damage any of the
refractory or blanket insulation. To gain access
Oil BOiler / BUrNer CleaNiNg iNsTrUCTiONs
to the combustion chamber rst double check
that the shut off valve on the fuel oil line is
closed and then disconnect the fuel oil line.
Then open the swing door by simply removing
the whiz lock nut holding the door shut.
7. Now inspect the target wall, re door refractory,
and combustion chamber blanket (when
included) for cracking and deterioration. If there
is any signs of cracking or deterioration, replace
the refractory or
blanket before
reassembling
the burner /
front plate.
8. Inspect th e
door’s braided
gasket for wear
and damage.
Replace when
n e c e s s a r y
with braided
gasket of the
same material
and size. See
repairs parts
section of this
manual.
9 Now inspect
and clean the
oil burner.
iMpOrTaNT OperaTiNg aNd MaiNTeNaNCe reQUireMeNTs:
• KEEP YOUR BOILER AND THE AREA AROUND IT CLEAN
• NEVER BURN REFUSE OR ANY MATERIAL OTHER THAN THE SPECIFIED FUEL
IN YOUR BOILER
• HAVE YOUR BOILER CHECKED EACH YEAR BY A QUALIFIED TECHNICIAN