TermaTech TT40 User Manual

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2. Open air damper for lighting air (the damper at the bottom of the wood-burning
stove), this is done by pushing the rod under the door all the way to the right.
3. Leave the door ajar so there is an opening of about 2-3 cm. Leave the stove like
that for about 8-10 minutes before you close the door completely.
4. The air damper at the top of the oven, above the door, is opened completely by
pushing it to the right.
5. Let the kindling burn to a solid layer of embers (there are no more flames) before
firewood is put into the wood-burning stove.
6. Put 2 pieces of firewood in the stove, app. 1.5 – 1.8 kg total. The pieces are both
put at the bottom of the stove and parallel to the front of the stove, with equal
distance to the stove’s sides and with mutual distance of about 1 cm. The front
piece is best lit if it has a split side that is turned to the door and one in the embers.
Close the door completely immediately.
7. When there are good, visible flames in the fire (after about 2-4 minutes) the damper
for lighting air is closed (the damper at the bottom of the wood-burning stove).
8. The air damper at the top of the stove can be regulated down a little bit to 2/3 open,
and after another few minutes it can be closed to 1/ open. How much or how little
the damper should be regulated depends among other things on the chimney
draught and the firewood. The flames must stabilise to a calmly burning fire.
9. When the wood has burned to embers (after about 1 hour) you start again from
point 6.
In order to get the optimum combustion it is important that you only regulate the effect or heat
amount with the firing. Small pieces of firewood give a more powerful combustion than large pieces
of firewood as the surface is bigger and thereby more gas is released. The amount of firewood in
the combustion chamber is also crucial, for normal use you should not put more than 2 logs (max.
2 kg per hour) into the stove and that is how you get the optimum effect.
If you want a higher heat amount you should put logs in the stove with many ’open’ sides, they
burn more powerfully and faster, but also give out larger amounts of heat.
NOTE! Remember that the handles on the wood-burning stove get hot, so use a glove when
you use the stove.
NOTE! Never light with the lighting damper open. (only for start-up)!
8. Firing
Your TermaTech wood-burning stove is made for firing with wood/firewood, we recommend the use
of split hardwood that has been stored for at least one year outdoors under a roof. Preferably put
the firewood on a wooden pallet, bearers or the like so it is off the ground. Remember to bring in
the firewood in good time before use so surface moisture can evaporate.
Kindling is the designation for finely split wood/sticks that are about 20-30 cm long and have a
diameter of 2-3 cm preferably with many open surfaces.
Firewood should have a diameter of 7-9 cm and be no more than about 30 cm long, otherwise it
will get too close to the side of the stove. The most important thing for good combustion is that the
wood is dry (15-18% moisture). If the firewood is too wet it is difficult to get it to burn, the chimney
draught is nonexistent, there is a lot of smoke and the exploitation is lower and it damages the
environment. Furthermore there may be damage to the stove and the chimney in the shape of
shining soot and tarry deposits. If the firewood is too dry it will burn too quickly, and often the
User’s manual
Wood-burning stove TT40 models
Version 18.11..2009

TermaTech TT40 Specifications

Exhaust System

rear exit	788 mm
exhaust branch diameter	Ø 150 mm
exhaust gas temperature	324º C
exhaust gas mass flow	4.4 g/s

Performance

effect degree	79.6%
nominal effect	5 kW
uptake	0.12 mbar/12 Pa

Weight and Dimensions

height	950 mm
width	458 mm
depth	414 mm
weight	120 kg