Table of Contents
Advertisement
7.2
CLEANING OF FUEL DROP CHUTE
The fuel drop chute above the fi re pot may need cleaning from time to time, especially when burning corn.
Corn dust, cornfl akes and cracked corn pieces (in other words: low quality corn) combined with humidity be-
gins burning and melting at the chute. Since corn contains high level of starch and sugar, the remains stick and
accumulate on the walls of the chute then clog the passage way for whole corn pieces to pass through. Using
dry and high quality corn (no cracks, no dust, no fl akes) will help to minimize the problem. It is a good practice
to check the fuel drop chute from time to time. If clogged, shut down the furnace, let it cool then remove the
chute by loosening the bolts, clean and re-install. Re-start the furnace. Always check the chute when you clean
the fi re pot.
7.3
CLEANING OF FIRE POT WHEN BURNING WOOD PELLETS
Please keep in mind, pellets do not cause clinkers like corn, but ash accumulates in the fi re pot. You can apply
the same method of cleaning when burning corn, except #11.
- Every one to two weeks, take the brush tool and run it in the tubes all the way to remove the residue in
tubes. Make sure most the residue drops into fl ue box in the back.
- Open fl ue stack covers in the back annually. Remove ash build up with a brush.
- Inspect exhaust system annually and clean as necessary.
- Annually check hot air blower (convection fan) and combustion fan for foreign deposits and clean as
necessary.
- Caution: clean out of fuel drop chute, fi re pot, fl ue pipe and chimney is especially important at the
end of the heating season to minimize corrosion during the summer months, caused by accumulated ash.
7.4
CONDENSATION
There is a drain hole underneath the fl ue box. Excessive condensation will drip out and should be directed to
the drain.
7.5
CONTROL OF CONDENSATION
There are "wave tube baffl es" in the heat exchange tubes. These are placed there to reduce the speed of ex-
haust gas and keep more heat in the furnace. Otherwise, more heat will escape out through the stack. These
baffl es may also cause condensation to increase. Remove a few baffl es starting from the bottom line will help
reduce condensation.
7.6
EXHAUST AND CHIMNEY RELATED MATTERS
Inspect chimney system regularly to ensure that exhaust gases are venting correctly and draft is adequate.
7.6.1 CHIMNEY DRAFT
Chimney should be properly cleaned at least once a year before the heating season begins.
7.6.2 SOOT AND FLY ASH
Formation and need for removal – the products of combustion will contain small particles of fl y ash. The fl y
ash will collect in the exhaust venting system and restrict the fl ow of the fl ue gases. Incomplete combustion,
that occurs during startup, shutdown, or incorrect operation of the furnace will lead to some soot formation
which will collect in the exhaust venting system. The exhaust venting system should be inspected at least
once every year to determine if cleaning is necessary.
7.6.3 CREOSOTE FORMATION
Effi cient burning of fuel and minimizing condensation on the fl ue pipe is the key to eliminating creosote buildup
on the fl ue lining. The chimney should be inspected periodically during the heating season to determine if a
creosote build-up has occurred. If a signifi cant layer of creosote has accumulated {3mm (1/8") or more} it
should be removed to reduce the risk of a chimney fi re.
Be aware that the hotter the fi re, the less creosote is deposited, and that more frequent cleanings may be nec-
essary in mild weather, even though monthly cleanings may be enough in the coldest months.
Check daily for creosote buildup until experience shows how often cleaning is necessary.
A small intense fi re is preferable to a large smoldering one to reduce the amount of creosote deposit.
27
W415-0771 / B / 08.10.09
Advertisement
Table of Contents
