Specifications
MONITOR
HEATING SYSTEMS
Section
5:
Servicing
5-6
CLEANING
THE
BURN CHAMBER
&
BURNER
POT
M-2200
Under
normal running conditions, soot will
not
deposit
in
great
quantities inside
the
burner,
and a
light covering
of
soot
will
not
affect
the
performance
of
the
unit thus
it
need
not be
cleaned. However,
rf
heavy
soot
built
up
does occur
the
unit should
be
opened
and
cleaned.
The
burner
is
assembled using gaskets
to
maintain
its air
tightness.
If
these gaskets leak,
the
extra
air
can
cause
a
serious soot
problem
and or
exhaust
gases
to
escape into
the
area
being heated.
NOTE:
If any
gaskets
are
torn when components
are
removed,
replace. Disconnect power
supply
to
unit.
1.
If
cleaning
is
necessary,
use the
following meth-
od:
A.
Remove Front Cover.
B.
Remove
Top
cover
and
wire
connectors.
C.
Remove heat
shield
that covers combustion
chamber.
D.
Remove Flame detector rod. (Optional)
E.
Remove fuel piping
from
bum
chamber.
F.
Remove igniter.
G.
Remove
screw
at top of
combustion.
chamber
which
attached
it to
cabinet. Remove screw
at
back
of
cabinet
from
exhaust duct.
H.
Remove
the 4
screws holding combustion cham-
ber
to bum
chamber.
I.
Raise about 1/2"
and
remove combustion cham-
ber
and
heat exchanger,
as one
assembly from
unit.
J.
Remove
the 4
screws holding
the bum
chamber
to
base.
K.
Set
chamber upside down
and
remove
the 4
screws
which secure
the
burner
pot to the bum
chamber.
Pull
the
burner
pot up and
out.
2.
Turn
counter-clockwise
to
remove combustion
ring.
If
ring does
not
turn,
pull
up
slightly
to
loosen
retaining
clips.
3.
Use
wire brush
to
clean
inside
of
combustion
chamber.
Vacuum
and
wipe clean with
a
waste cloth.
4. If tar is
present
on the
burner
bottom,
remove
the tar by
using
a
flat-bladed
screw driver
or
wire
brush,
then clean
the
area
by
using
a
vacuum
cleaner etc.
NOTE:
Make
sure
all air
inlet
openings
are
clear.
5.
When cleaning
the
inside
of the
burner pot,
remove
the
igniter
and
change
the
burner cloth
by
the
following procedure.
NOTE: Bottom
of
burner
pot
must
be
clean
for
glue
to
bond
the
cloth
to the
burner.
6.
Apply
glue
(P/No.8217)
on the
burner bottom
as
shown
in
Figure 5-6.
Glue
Burner
Cloth
Figure
5-6
Put
the
burner cloth
on the
burner bottom,
afterwards
press
and
straighten
out the
burner
cloth
so
that
it is
glued flat
and
even
on
the
burner bottom.
7.
Combustion
ring may
deform
and
deteriorate
after
several years
use and
should
be
cleaned
and
inspected before reinstallation.
If
combus-
tion
ring
is
warped,
has
cracked
or is
deteriorat-
ing
excessively
it
should
be
replaced.
8.
When reassembling
the
unit check that com-
bustion
ring is
positioned with
the
correct
side
up
and is
sitting squarely
on all
three support
pins inside
the
burner pot.
9.
Reassemble
by
reversing
the
procedure foll-
owed
during disassembly.
NOTE:
Use of the
economy plus feature
can
minimize
service calls
and
extend com-
ponent life.
46