NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
10
CLEANING THE COMBUSTOR (Figure 7):
Catalytic combustors require little maintenance.
Cleaning the combustor once a year, preferably
when your flue system is serviced, is sufficient
for most users.
CAUTION: BOILING WATER MUST BE USED
TO CLEAN THE COMBUSTOR.
Prepare a mixture of white vinegar and distilled
water for cleaning of the combustor. A gallon
of distilled water should be available for rinsing
of the combustor after cleaning.
White vinegar
– 1 QUART enough to make a
50/50 solution with the distilled water to cover
the combustor.
Distilled Water
– 1 QUART enough make a
50/50 solution with the white vinegar to cover
the combustor.
Rinse Water
– 1 GALLON of distilled water.
Combine the white vinegar and the distilled water
in a pot large enough to soak the combustor.
Bring the solution to a boil.
Soak the combustor in the solution for ap-
proximately 30 MINUTES. The solution may
need to be reheated for maximum cleaning
effectiveness.
Rinse the combustor – Thoroughly rinse the
combustor in the distilled water.
Remove the combustor from the rinse water
and gently shake out the excess water.
NOTE:
THE COMBUSTOR MUST BE COMPLETELY
DRY PRIOR TO USE.
Catalytic Combustor Housing
Combustor Assembly
Catalytic Combustors
Figure 7
Figure 8
COMBUSTOR ASSEMBLY REMOVAL INSTRUCTIONS
1. Remove the left and right baffles which are resting on top
of the (3) secondary Burn Tubes.
2. Rotate each of the (2) Combustor Assembly support
brackets (underneath the assembly tray) towards the front
of the appliance, being careful not to drop the assembly
3. Rotate the assembly forwards and down, until it may be
removed from the tray.
4. Installation is reverse of removal. Before re-installing the
combustor assembly, a bead of mill-pack should be applied
to the rear surface of the box, so that when it is rotated up
and into position it seals to the bracket behind it.
Secondary Burn
Tubes (3)
SECONDARY AIR TUBE REMOVAL IN-
STRUCTIONS
1. Remove the two ceramic baffles, gently
pulling them forward and down.
2. To remove the burn tubes first remove the
bracket which position and secures the
tubes in place. This is done be removing
the (2) screws
(see
Figure 8
)
which hold
this bracket in place (upper left side, inside
the firebox).
3. Once the bracket is removed, each tube
may be removed by sliding it to the left and
dropping the right, and the sliding the tube
to the right.
4. Re-installation is in reverse order.
Catalyst Monitoring
It is important to periodically monitor the opera-
tion of the catalytic combustor to ensure that it
is functioning properly and to determine when
it needs to be replaced. A non-functioning com-
bustor will result in a loss of heating efficiency,
and an increase in creosote and emissions. Fol-
lowing is a list of items that should be checked
on a periodic basis:
• Combustors should be visually inspected at
least three times during the heating season
to determine if physical degradation has
occurred. Actual removal of the combustor
is not recommended unless more detailed
inspection is warranted because of decreased
performance.
If any of these conditions exists, refer to Cata-
lyst Troubleshooting section of this owner’s
manual.
• This catalytic heater is equipped with a tem-
perature probe to monitor catalyst operation.
Properly functioning combustors typically
maintain temperatures in excess of 500°F, and
often reach temperatures in excess of 1,000°F.
If catalyst temperatures are not in excess
of 500°F, refer to Catalyst Troubleshooting
section of this owner’s manual.
• You can get an indication of whether the cata-
lyst is working by comparing the amount of
smoke leaving the chimney when the smoke
is going through the combustor and catalyst
light-off has been achieved, to the amount of
smoke leaving the chimney when the smoke
is not routed through the combustor (bypass
mode).
Secondary Air Tubes (3)
Screws (2)
Ceramic Baffles
