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General information about heat
accumulating fireplaces
Heat accumulating fireplaces differ from other fireplaces
in that they are intended to provide a moderate heat
for prolonged periods with a limited time of burning.
Conventional fireplaces give off strong heat during the
burning period but with a very limited cool-down period.
The heat accumulating fireplaces from Nordpeis have
a long duct system where the heat developed in the
combustion chamber passes through the duct system
before it exits through the chimney. The heat from the
gases is absorbed by the material surrounding the
smoke ducts, and by the time the smoke exits through
the chimney. The efficiency of a well-constructed
heat accumulating fireplace is thus far better than the
efficiency of a conventional fireplace.
A heat accumulating fireplace can keep an even
temperature throughout the day with only one heating
cycle.
Double- action damper:
The stove is fitted with a double action damper, and
controls two functions: bypass and chimney damper.
When the damper rod is pulled all the way out (right
hand operation), the flue gasses will bypass the canal
system and exit through the chimney. This function is
used when lighting the fire. When the stove and the
chimney has reached operating temperature after 10
– 30 minutes the damper rod should be pushed half
way in until a "click" is heard. In this position the by-
pass damper is closed and the flue gasses are forced
through the stove's canal system which is absorbing
the heat of the flue gasses before it is released to the
chimney.
The bypass damper should also be opened before
opening the door for re-fuelling wood, and then closed
again.
WARNING: Using the stove over prolonged periods
with open bypass damper may expose the chimney
to higher temperatures that it is design for.
By pushing the damper rod all the way in (right hand op-
eration), both bypass- and the chimney damper will be
closed. This closes off the canal system from the chim-
ney, preventing the heat accumulated in the stove to
be lost through the chimney. This function should never
be used before the fire is out and only a bit of embers
are left in the stove. WARNING: Closing the chimney
damper too early can result in flue gasses entering
the room and cause carbon monoxide poisoning.
Air Vent
When burning in a heat accumulating fireplaces the
air vent is traditionally kept open to a maximum. This
ensures optimal combustion and minimises carbon
deposits in the smoke duct system. In addition it makes
it easier to keep the glass clean during intensive
burning. However, should one wish for a longer burn
period and slower flames, the air vent is adjusted
and reduced. Salzburg is equipped with secondary
combustion technology, which can normally only
be found on modern fireplaces. This ensures clean
combustion and high efficiency, even at lower loads.
Cleaning the Smoke Duct System
When the fireplace is used every day throughout the
heating season, we recommend that the smoke duct
system is swept once yearly. This is to maintain the
draught and efficiency. Soot isolate the ducts and
thus lower the efficiency. One can also notice that the
draught is reduced and that the flames are difficult
to control with the air vent function. Remember that
the fireplace must always be cold before it is swept /
inspected.
In order to clean the ducts, remove the Thermotte baffle
plate and the two Thermotte side panels. Insert cleaning
brush bothe up-and downwards. Soot will collect in the
bottom and can be removed with an ash-cleaner by
opening the Thermotte lid in the floor of the combustion
chamber. The flue-pipe can be accessed through the
door and the center-canal for the basic version. If you
have a hot-plate, remove the hotplate for direct access
the the flue pipe.
Ash
Optional. The ashes must be emptied periodically.
Please note that the ash may contain hot embers even
several days after the fire has ceased. Use a container
of non-combustible material to remove the ashes.
Weight
The home owner must ensure that the floor can
withstand the load of the total weight of the product.
Firewall
Freestanding fireplaces can be installed without a
firewall. Observe all safety distances to combustible
materials.
Connection to Chimney
Follow specifications from the chimney manufacturer
for connection to the chimney. Dry stack the fireplace
for accurate height and positioning of the flue/chimney
connection.
The product is not compatible with top connected
concrete chimney.
Maximum weight of steel chimney (top connection)
is 300kg.
By top connection to steel chimney, we refer to the
respective manufacturer's installation instructions.
Requirements for Floor Plate by Combustible Floor
Follow the requirements for floor plate (stone, steel,
etc.) that apply in the country that the product is
installed in.
GB
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