Fuel; Routine Maintenance - Lennox Hearth Products Montage 32FS Installation And Operation Manual

FUEL

Fuel Specifications - Using the Ultragrate™ burn system, this appliance
has been designed to burn wood residue pellets only (with up to 3% ash
content). Agricultural pellets (i.e. corn, alfalfa etc.) are not permitted to be
burned in the stove. Dirty fuel will adversely affect the performance of the
stove. The pellet fuel should meet P.F.I. (Pellet Fuel Institute) standards
for standard grade or premium grade residential pellet fuel. If the pellet
fuel meets these standards, it will be printed on the bag. Any questions
regarding pellet fuel can be answered at the Pellet Fuels Institute (PFI),
www.pelletheat.org.
Pellet Feed/Pellet Size - The pellet feed system is designed to handle a
wide range of pellet sizes up to a maximum of 5/16" diameter. Different
pellets may feed at considerably different rates. You may notice a differ-
ence in the burn if you change pellet fuel sizes. The longer the pellet, the
slower it will feed and vice versa. If the stove will not stay burning at the
minimum fuel feed setting, those particular pellets may not be feeding
fast enough. If this happens, reduce the amount of combustion air by
adjusting the damper. See Page 9 before adjusting the damper.
Clinkering - Silica (or sand) in the fuel, along with other impurities, can
cause clinkering. A clinker is a hard mass of silica formed in the burning
process. Clinkering is a function of the fuel, (not the stove), but adversely
affects the performance of the stove by blocking off the air passages in
the grate. Even P.F.I. approved pellet fuel may tend to clinker. A clinker
can be removed from the UltraGrate™ and placed in the ash pan with
the use of the grate scraper/ash pan tool furnished with your stove. See
Routine Maintenance (on Pages 21 through 24) for more information
on cleaning.
Ash - The frequency of removal of the ash and maintenance performed
on the stove is directly proportional to the ash content of the fuel and the
operation duration of your pellet stove. Low ash fuel may allow longer
intervals between cleaning, however, a stove burning high ash fuel may
need to be cleaned as often as everyday.
PLEASE NOTE: Lennox Hearth Products has no control over the manu-
facturing of pellet fuel and will not be held responsible for poor stove
performance or any damage caused by poor quality pellet fuels.
Note: See Fuel Delivery Rate on Page 18 for burn times.
The use of unapproved, dirty, wet and / or high salt
content fuel will void the warranty!
CAUTION
Wood pellets manufactured to the pellet fuels institute (P.F.I.) certification
standard are available in two grades, Standard and Premium. The primary
difference between the two is the ash content of the pellets.
The P.F.I. specification for standard grade & premium grade residential
pellet fuel is as follows:
• CHLORIDES (Salt): Less than 300 p.p.m. to avoid stove and vent
rusting.
• BULK DENSITY: 40 lb. / Cu. Ft. minimum
• MOISTURE CONTENT: 8% maximum
• ASH CONTENT: < 3% maximum (standard grade) < 1% maximum
(premium grade)
• FINES: 0.5% maximum through a 1/8" screen
• BTU CONTENT: There are a number of variations in pellet fuels that are
not included in PFI standards. For example, BTU (heat value) content
may range from just under 8,000 to almost 9,000 BTU, depending
upon species and region of the country and other variables.
FUEL FEED RATES
Different brands of pellets will feed at varying rates due to their size
and density (length and diameter). This may require a slight adjustment
in the damper adjustment (see Page 9) or the fuel feed trim control to
compensate (see Page 18).

ROUTINE MAINTENANCE

Cleaning
IMPORTANT
Unplug and Ensure Stove is Cold Before Performing
Any Maintenance Work.
The following areas need to be inspected and cleaned during routine
cleaning:
• Heat Exchange Tubes / Tube Scraper (Homeowner)
• Baffle Plates (Qualified Technician Only)
• Proof of Fire Switch (Qualified Technician Only)
• Window Wash (Homeowner)
• Ash Clean-Out Ports (Qualified Technician Only)
• Paint Touch-up (Qualified Technician Only)
• UltraGrate (Burn Grate) (Homeowner)
• Ash Slide Plate (Homeowner)
• Ash Pan (Homeowner)
• Exhaust Passages / Vent Pipe and Creosote Removal (Qualified Techni-
cian Only)
• Gaskets (Qualified Technician Only)
• Cleaning Rear Stove Compartment (Qualified Technician Only)
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