Lennox Hearth Products Montage 32FS Installation And Operation Manual page 24

UltraGrate™ (Burn Grate)
Inspect the UltraGrate periodically so that the air holes don't clog with ash
or clinkers. The UltraGrate can easily be cleaned with the grate scraper
tool, or it can be removed. It is very important to monitor the ash build
up under the UltraGrate, as too much of ash will block combustion air
from entering the grate, causing pellets to pile-up in the grate. The ash
build-up under the grate is easily dumped into the ash pan by pulling out
the ash slide weekly (see Ash Slide Plate, Figure 30).
(Recommended Frequency
of 1 day –  weeks)
UltraGrate
Figure 29 - Inspect UltraGrate and Clean if Necessary
Ash Slide Plate
Ash that accumulates around the grate can be "dropped" into the ash
pan as follows:
1. Open the firebox door.
2. Pull open the ash release slide plate as shown in Figure 30.
3. Using a brush, sweep the ashes from the firebox through openings
to the ash pan.
4. Close the ash slide plate, then close the firebox door.
IMPORTANT NOTE: Make sure to fully close the ash slide plate when
complete. Failure to close the ash release slide plate completely may
cause the fuel to burn poorly (due to reduced air flow through the grate),
which may then cause pellets to "pile up" in the grate. The ash slide
must be fully closed for the firebox door to close.
(Recommended Frequency
of 1 day –  weeks)
Ash Slide Plate
Figure 30 - Using the Ash Slide Plate
4
The grate scraper tool fits into
this slot for easy removal
Sweep ashes into
openings on sides
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE
Ash Pan
The ash pan will have to be emptied periodically, depending on amount of
fuel consumed. The ash pan is located in the pedestal. See Figure 31.
Figure 31 -
Ash Pan
Creosote Removal
When wood is burned slowly, it produces tar and other organic vapors,
which combine with expelled moisture to form creosote. The creosote
vapors condense in the relatively cool chimney flue of a slow-burning fire.
As a result, creosote residue accumulates on the flue lining.
When ignited this creosote makes an extremely hot fire. The chimney
connector and chimney should be inspected at least once every two
months during the heating season to determine if a creosote buildup
has occurred.
If creosote has accumulated it should be removed to reduce the risk of
a chimney fire.
Exhaust Passages And Vent Pipe
Inspect frequently and clean when necessary. Fly-Ash will accumulate at
all bends in the exhaust system.
Note: Large amounts of fly-ash build-up will create a lack of combustion
air. Removing the clean-out tee cap on vertical installations will allow an
inspection of the ash build-up in the clean-out tee and will help you to
decide how frequently more extensive cleaning must be performed.
Rain Cap
Clean-Out Tee
Figure 32 -
Clean Vent Components
Ash Pan
(Recommended Frequency
of  days –  weeks)
(Minimum Frequency
of 1- months)
Remove cover, then
remove ash