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Sprecial attention must be paid when building fires like this since if the air intake is reduced too
quickly, the fire could smoulder. The wood must be flaming brightly before leaving the fire to
burn.
4.6.4 Maximum Burn Cycle Times
The burn cycle time is the period between loading wood on a coal bed and the consumption of
that wood back to a coal bed of the same size. The flaming phase of the fire lasts for roughly
the first half of the burn cycle and the second half is the coal bed phase during which there is
little or no flame. The burning time expected from this stove, including both phases, will vary
depending on a number of things, such as:
− firebox size,
− the amount of wood loaded,
− the species of wood,
− the wood moisture content,
The table below gives an approximate maximum burn cycle times, based on firebox volume.
A longer burning time is not necessarily an indication of efficient stove operation. It is preferable
to build a smaller fire that will provide three or four hours of heating than to fully load the firebox
for a much longer burn. Shorter burn cycles make it easier to match the heat output of the stove
to the heat demand of the space.
4.6.5 Logs Orientation
In a relatively square fireboxes, the wood can be loaded north-south (ends of the logs visible) or
east-west (sides of the logs visible).
North-south loads allow more wood to be loaded at the same time. On the other hand, they
break into smaller pieces faster. North-south loading is good for high output, long lasting fires
for cold weather. East-west loads allow a limited amount of wood since too much logs could
cause them to fall on the glass. East-west loads, placed in a compact way, take a long time
before breaking down. They are excellent for low-intensity, long-lasting fires in relatively mild
weather.
4.6.6 Carbon Monoxide
When unburned logs remain in the firebox and the flame disappears, go outside and look at the
chimney exit. If there is visible smoke, it means that there is still combustible to burn but that
the fire lacks air to burn properly. In this situation, the CO rate will increase so it is important to
react. Open the door slightly and move the log with a poker. Turn it over and create a passage
for the air below, making a trench with the coal bed. Add small pieces of wood to restart the
combustion.
Installation and Operation Manual - Solution 2.3
Table 1 : Approximate Maximum Burn Cycle Time
FIREBOX VOLUME
<1.5 cubic feet
1.5 c.f. to 2.0 c.f
2.0 c.f. to 2.5 c.f.
2.5 c.f. to 3.0 c.f.
>3.0 c.f.
− the size of the space to be heated,
− the climate zone where the house is, and
− the time of the year.
MAXIMUM BURN CYCLE TIME
3 to 5 hours
5 to 6 hours
6 to 8 hours
8 to 9 hours
9 to 10 hours
Page 25
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