24
Värmebaronen Vedolux -350, -450 and -650
Wood
Hardwood generally has a higher energy content than
softwood.
The wood must be dry and have a moisture content
of 16
±
8%. If the wood is damp, a large part of its
energy is used to dry it, combustion is impaired and
the risk of tar coating increases.
Oak must be well dried, for more than three years,
or mixed with other species of wood to avoid the
negative factors of the acid content.
The pieces of wood must be adapted to the
combustion chamber. The length should be
approximately 19.7 in. and the thickness such that
three to six pieces have room across the grate.
Storage
After cutting, the wood must be split. The more it is
split, the faster and more easily it dries. For pieces of
wood that are hard to split, the bark can be peeled
off to allow them to dry faster. Fresh wood is easiest
to split. The wood must not lie directly on the ground
as it will then absorb moisture instead of drying. It
should preferably be stored under a roof but so that
the sun and wind are able to dry it. Finally, it should
be dried in the boiler room two to three weeks
before it is used. After this, the moisture content is
approximately 20%.
Heat content
Heat content means the quantity of heat that the
boiler can make use of and transfer to the boiler
water. Do not confuse this with energy content,
which is higher the bigger the piece of wood is.
The heat content is higher the drier the piece of
wood is, as it does not use as much heat for the
drying process. Freshly felled wood has a moisture
content of approximately 55%. Wood that has been
dried according to our instructions has a moisture
content of approximately 20%.
The diagram shows the differences in heat content.
The effects of firing with damp wood are poorer
combustion and dirtier emissions, which in turn
result in lower efficiency.
This heater is designed to burn natural wood only.
Higher efficiencies and lower emissions generally
result when burning air dried seasoned hardwoods,
as compared to softwoods or to green or freshly cut
hardwoods.
DO NOT BURN:
(1) Garbage;
(2) Lawn clippings or yard waste;
(3) Materials containing rubber, including tires;
(4) Materials containing plastic;
(5) Waste petroleum products, paints or paint thinners,
or asphalt products;
(6) Materials containing asbestos;
(7) Construction or demolition debris;
(8) Railroad ties or pressure-treated wood;
(9) Manure or animal remains;
(10) Salt water driftwood or other previously salt
water saturated materials;
(11) Unseasoned wood; or
(12) Paper products, cardboard, plywood, or
particleboard. The prohibition against burning these
materials does not prohibit the use of fire starters
made from paper, cardboard, saw dust, wax and
similar substances for the purpose of starting a fire in
an affected wood heater. Burning these materials may
result in release of toxic fumes or render the heater
ineffective and cause smoke.
Handling wood
8000
7000
6000
5000
4000
3000
0
10
20
30
40
50
Btu/lb
% moisture
content