Hearthstone Quality Home Heating Products, Inc
® Green Mountain Insert 70 (Model 8450)
27
lower burn rate. The air control does not close
completely.
Note:
When opening the front door to reload or re-
arrange logs, it is advisable to open the door just a
crack, pause for a moment then open the door
completely. This procedure allows the firebox to
clear of smoke before the door is open fully. In
addition, reloading on a bed of hot, red coals
reduces smoking time and brings fresh fuel up to a
high temperature rapidly. When reloading the
fireplace insert, try to keep an open path behind the
Lower Primary Air Opening (LPAO). It is helpful to
leave a small valley in the coal bed behind the LPAO
to insure faster re-lighting.
B
URN
R
ATE
This wood heater has a manufacturer-set
minimum low burn rate that must not be altered.
It is against federal regulations to alter this
setting or otherwise operate this wood heater in
a manner inconsistent with operating
instructions in this manual
LOW BURN:
Move the air control lever all the way
to the right. (
See figure 24
). This closes the air
shutter to its minimum opening. A low burn rate over
extended periods is not advisable as it can promote
the accumulation of creosote. Inspect the venting
system frequently
if
using
low
burn
rates
consistently.
MEDIUM LOW BURN:
With the primary air control
in the low position, pull the air control left (a little less
than 1/2
”). A medium-low burn rate is the typical
setting and is preferable if the fireplace insert is
unattended. At this burn rate, a little goes a long
way.
MEDIUM HIGH BURN:
With the primary air control
in the low position, pull the air control left (a little less
than 1
”)
HIGH BURN:
Completely open the primary air
control by moving it all the way left. Fully load the
firebox with wood on a bed of hot coals or on an
actively
flaming
fire.
To
minimize
creosote
accumulation, run the fireplace insert on high once
or twice daily for 35 to 45 minutes to fully heat the
stovepipe and chimney.
CAUTION:
Do not burn fuel other than cordwood in
your fireplace insert.
O
VER
-F
IRE
C
AUTION
Over-firing means the fireplace insert is operating at
temperatures above normal temperatures reached
during High Burns outlined in the
BURN RATE
section. Carefully avoid over-firing, as it will damage
the fireplace insert. Symptoms of chronic over-firing
can include warped components, short burn times, a
roaring sound in the fireplace insert or chimney, and
discoloration of the finish. A properly installed
fireplace insert using fuel and following operating
procedures as outlined in this manual should not
over-fire.
Excessive draft, inappropriate fuel, and operator
error can cause over-firing. Correct an over-fire
situation as follows:
EXCESSIVE DRAFT:
Contact your local dealer
to have a draft reading taken. Any draft in
excess of 0.1 WC requires a damper in the
stovepipe. Some installations may require more
than one damper.
INAPPROPRIATE FUEL:
Do not burn coal; kiln
dried lumber, wax logs, compressed wood,
highly volatile fuels or combustibles, or anything
other than natural cordwood.
OPERATOR ERROR:
Ensure all the gaskets
are in good condition. Replace worn out or
compressed gaskets. Only burn the fireplace
insert with the door in the closed position, or
completely open when using the fireplace
screen.
If you suspect your insert is over-firing, discontinue
use and contact your dealer immediately.
Damage
caused by over-firing is not covered by your
warranty.
Results of over-firing can include warped
or burned out internal parts, cracked refractory
panels, discolored or warped external parts, and
damaged finish.
ANY SIGNS OF OVER-FIRING WILL VOID YOUR
WARRANTY!
R
EMOVAL
A
ND
D
ISPOSAL
O
F
A
SHES
You can leave a thin layer of ashes in the firebox if
preferred. Allow fire to die down or go out
completely. It is important to prevent ashes from
building up around the front door opening or they will
spill out, or they can pack into the gasket channel
and prevent proper sealing. To remove ashes, use a
fireplace shovel. Avoid removing large live coals by
pushing them to the side and removing only the finer
ash with a shovel.
Disposal of ashes - Ashes should be placed directly
into a
metal
container with a tight fitting lid. Do not
place any other items or trash into the metal
container. Do not pour water into the container.
