Combustion
air
Combustion
air
8
8
soot that it becomes sticky. Causing the sealing
of the door to tear off when opening the door
the next day.
1.8 Explosion!!!
It is very important never to leave
The stove after start up or refueling,
before the fire is established.
(Typically 1 to 3 minutes)
Explosion can occur if filled with too much fuel
in the stove, the production of large volumes
of gas, which can explode if the air supply be-
comes too low.
It is an advantage for the next firing to leave a
layer of ash lying in the bottom of the firebox.
Be careful when emptying the ashes out. There
can be hot embers left for a long time.
Warning!
One must always use cation around
the stove seen, as it gets very warm
during use. (In excess of 90° C).
Children should avoid contact with the stove.
Setting up a fence if you have small children may
be necessary.
Do not place flammable objects like drying racks,
furniture, curtains too close to the stove.
1.9 Draft conditions
and the chimney
Poor draft will not allow the stove to burn, as it
should. The glass can soot, requires cleaning of
the chimney more often, smoke can escape out
when the door is open and it gives poor fuel ef-
ficiency. Leading to unnecessary polluting of the
environment.
Good draft will allow the stove to achieve op-
timal combustion and the highest possible ef-
ficiency. Heta wood stoves are constructed so
that it itself provides an optimal blend of com-
bustion air. This provides a high efficiency/heat,
clean glass and low environmental impact.
Minimum chimney draft for Inspire 40 insert is
11 pascal. It is the draft that the stove has been
tested and approved on. The minimum draft is
necessary to provide clean burning, beautiful
flame picture, as well as achieving the rated effi-
ciency.
There is a risk of smoke escaping into the room
if the door is opened during vigorous firing, or if
there is a lack of air supply to the room, for ex. if
an extraction fan is in use.
Flue gas temperature at the rated output is 216°
C relative to 20 ° C. Flue gas flow is 3.4 g / sec.
The chimney height and diameter, as well as
the temperature difference between the flue gas
and outside temperature generates the chimney
draft. Chimney insulation is therefore important
as new efficient stoves create lower flue tempe-
ratures. Wind and weather conditions also in-
fluence draft, in some cases it may be disad-
vantageous wind direction, combined with the
position of the chimney can cause negative draft
(it blows through the chimney), causing smoke
escape from the stove.
Before using after a long period of inactivity,
check that the chimney is free for any blocka-
ges. (soot build-up, bird nests, leaves etc.).
Reduced draft can occur when:
• The temperature difference is too small
between smoke gasses and outdoor
• To short of a chimney
• The outside temperature is high, and indoor
temperature is low f. ex. in summer
• False air in the chimney
• Chimney is blocked
• Air tight house (lack of combustion air supply)
• Poorly placed chimney for the surroundings,
for ex. the ridge and trees may cause
turbulence
Good draft occurs when:
• The difference in temperature in the chimney
(warmer) and outside temperature (colder)
• It is clear weather
• The chimney has the right height min 4 meters
above the stove, and clear of the roof ridge
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