Drolet DF02003, Installation And Operating Instructions Manual

Page: 47 / 92

Heat Commander Furnace Installation and Operation Manual
47
Here are some things to consider in estimating drying time:
•
firewood takes a long time to dry
•
firewood bought from a dealer is rarely dry enough to burn, so it is advisable to buy the
wood in spring and dry it yourself
•
drying happens faster in dry weather than in damp, maritime climates
•
drying happens faster in warm summer weather than in winter weather
•
small pieces dry more quickly than large pieces
•
split pieces dry more quickly than unsplit rounds
•
softwoods take less time to dry than hardwoods
•
softwoods like pine, spruce, and poplar/aspen can be dry enough to burn after being
stacked in the open for only the summer months
•
hardwoods like oak, maple and ash can take one, or even two years to dry fully,
especially if the pieces are big
•
firewood dries more quickly when stacked in the open where it is exposed to sun and
wind; it takes much longer to dry when stacked in a woodshed
•
firewood that is ready to burn has a moisture content between15 and 20% by weight and
will allow your furnace to produce its highest possible efficiency
8.1.6 Judging firewood moisture content
You can find out if some firewood is dry enough to burn by using these guidelines:
•
Use the wood moisture meter provided with your furnace to test your firewood. Testing
the middle of a freshly split piece of wood is the most accurate test point,
•
cracks form at the ends of logs as they dry,
•
as it dries in the sun, the wood turns from white or cream colored to grey or yellow,
•
bang two pieces of wood together; seasoned wood sounds hollow and wet wood sounds
dull,
•
dry wood is much lighter in weight than wet wood,
•
split a piece, and if the fresh face feels warm and dry it is dry enough to burn; if it feels
damp, it is too wet,
•
burn a piece; wet wood hisses and sizzles in the fire and dry wood does not.