Special features koko xtra 2.0, Operation with external air supply, Xtra heat storing technology – Austroflamm Koko Xtra 2.0 User Manual
Page 10: Problem possible reason solution

Koko Xtra 2.0
8
english
5. SPECIAL FEATURES KOKO Xtra 2.0
Xtra heat storing technology
The model KOKO Xtra 2.0 has been equipped with the unique Xtra heat storing technology. This technology is based on the
patented Heat Memory System, but also on the special flue gas guidance and the convection air which can be regulated or
shut off completely. Consequently a fast heating system is being combined with an extraordinarily efficient heat storing.
The convection air can be regulated according to demand with the attached lever (see picture). The more the convection air
outlets of the top plate are open, the faster heat but less heat storing can be reached. A closed top plate will however lead to
slow heat and longer heat storing.
Our hint: while the fire still burns let the convection air outlets open; close them after the fire has burnt down in order to
reach a steady heat emission.
Operation with external air supply
Koko Xtra 2.0 can be operated with an external air connection. If the combustion air is being supplied directly to the furnace
by an air-tight pipe including closing mechanism from the outside, then the stove may be used in residential property with
mechanical ventilation.
Attention – all gaskets must be inspected periodically for tightness and have to be replaced if necessary.
If the stove in being used like that, a multiple stove installation on the same chimney is forbidden.
This stove has been approved by the German DIBT
.
problem
possible reason
solution
door glass gets sooty too fast
generally: door glasses must be cleaned with
Austroflamm glass cleaner from time to time (depending
on the frequency of use)
bad chimney draught
contact your chimney sweep (elongate chimney/draught
metering)
incorrect use of the combustion air
supply lever
please operate air lever according to user's instructions
(if secondary air is closed, the door glass soots rather
fast)
wood logs are too large
keep to the max. fuel quantity according to user's
instruction
operating temperature was not
reached
more fuel, use dry wood (< 15 % residual moisture),
attend air regulation
stove does not get enough
combustion air
chimney draught not sufficient
contact your chimney sweep (elongate chimney/draught
metering)
stove is sooted inside
more fuel, use dry wood (< 15 % residual moisture),
attend air regulation
stove smells strongly and there is
smoke on the outside surface
baking phase of the varnish
there may be some odour development during the first
operations
stove is dusty/dirty
cleaning before the heating season starts!
exhaust gas emission while putting
more wood on the fire and during
operation
inspect joints and seal up again if necessary
chimney draught no sufficient, flue
pipe connection leaky
check chimney draught, examine operating - for info
video follow:
http://www.austroflamm.com/de/Video/index.html
the stove door was opened before
the wood has burnt down to
embers
put more fuel wood into the combustion chamber only if
there are only embers left (no more visible flame)