13
3-90-70744R11_05/13
The amount of shaking is critical Too much will disrupt the
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to drop through the grates into the ash pan
Ashes
- Ashes should ne er be allowed to accumulate in the
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to go out and also can cause se ere damage to the grates
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Ashes should be placed in a metal container with a tight
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are disposed of by burial in soil or otherwise locally dis persed
they should be retained in the closed container outside the
dwelling) until all cinders ha e thoroughly cooled
CAUTION: ASHES SHOULD NEVER BE ALLOWED TO
ACCUMULATE ABOVE THE TOP OF THE ASH PAN.
ASHES IN CONTACT WITH THE BOTTOM OF THE
GRATES ACT AS AN INSULATOR, INTEN SIFYING THE
HEAT ON THE GRATES, AND COULD CAUSE THEIR
WARPAGE. WITH AN EXCESSIVE ASH BUILDUP,
PRIMARY COMBUSTION AIR IS RESTRICTED. THUS
THE UNIT’S OUTPUT COULD BE RE DUCED.
Coal produces considerably more ash than wood So the
inter als be tween emptying are much shorter For e ual
heat output coal will produce se en to ten times more ash
than wood
Draft Control Settings -
The idle air ad ustment on the
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than for wood Here again experience will dictate the best
setting The maxi mum air ad ustment bolt can be set at the
maximum position for uick reco -
ery When a longer than normal burn time is desired the
maximum air ad ustment can be reduced e er ad ust the
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6 on page 11
Safety Tips
When opening the loading door it should be cracked open
slightly for a few seconds to allow oxygen to burn any gases
that may be present and to allow smoke to be drawn away
from the door
Whene er the bottom door is open it should be closed before
opening the loading door This is to increase draft through
the loading door and pre ent excess smoke from escaping
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the carbon monoxide can be forced out of the fur nace into
the room with possible
fatal
conse uences
With the exception of start up or increasing heat from a low
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closed e er install a Harman furnace to a chimney with a
history of down drafts
KEEP CHILDREN AWAY - MAY CAUSE SERIOUS BURNS.
CAUTION: ALL SURFACES OF FURNACE ARE HOT. DO
NOT TOUCH. KEEP CHIL DREN AWAY. SERIOUS BURNS
WILL RE SULT IF TOUCHED. THIS IS A HEAT PRO DUCING
APPLIANCE.
FUEL/FIRING WARNINGS -
DANGER! FIRE HAZARD! DO NOT USE CHEMICALS
OR FLUIDS TO START OR
“FRESHEN UP” A FIRE.
SEVERE BODY BURNS OR A FIRE IN YOUR HOME
COULD RESULT. DO NOT BURN GAR BAGE, GASOLINE,
THINNERS, DRAIN OR ENGINE OIL, KEROSENE, OR
FUEL OIL, ETC. AN EXPLOSION, A HOUSE FIRE OR
PERSONAL INJURY COULD RESULT. KEEP ALL SUCH
LIQUIDS WELL AWAY FROM THE FURNACE WHILE IN
USE.
Chimney Problems
Not Enough Draft
- Chimney is too low A chimney should
be two feet higher than anything ten feet around it
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defecti e
Chimney may be blocked with creo sote or bird nests etc
Improper si ed chimney or sto e pipe
Too many elbows
Distance of more than eight feet between furnace and
chimney
Down Drafts
- Trees or other topo graphical barriers may
impede the chimneys operation causing a down draft
condition to exist This can also be caused by ad acent
buildings or chim neys
Creosote and Condensation -
If creo sote or condensation
runs out of the chim ney or sto epipe check the following
Chimney cap or lining may be defec ti e
Furnace may be too far from chim ney not allowing the
chimney to get warm
Wood being burned may be green or wet
nit may be too large for home caus ing wood to be burned
too slow
Excessive Draft
- This can be controlled with a barometric
draft control on the sto epipe
Operating Instructions/Safety Tips
