Aito AK-68 User manual

AITO SAUNA STOVE AK-68
INSTALLATION INSTRUCTIONS
1. Technical information
Nominal effect kW 36
Diameter mm 680
Height mm 1390
Weight kg (without stones) 430
Peridotite stones kg 250
Diameter of flue opening mm 150
Center of flue opening from floor mm 1770
1)
1) The height to flue opening is valid when the stove is
at a distance of 50 mm from the wall. If the top cover
of the stove is turned, the height is to be
measured separately.
2. Assembly
Minimum distance to a non-flammable wall should be
5 cm for air space. When installing the lower mantle
cylinder you can determine the direction of the fire
chamber. Please note that also the upper cover of the
stove can be turned as shown in the picture.
The masonry for the ash room and the fire chamber
should be done with fireproof mortar with a thin seam.
Follow the assembly drawing on page 3.
After the grates the front piece is put in place. When
the upper mantle and the rock wool mat have been
mounted, fill the stone space simultaneously with the
bricks so the bricks stay upright. Rinse the stones
before stacking. Put the large stones lowest and not
very densely so that the fire gets evenly to the whole
stone space. Put the smaller stones at the top.
Put loose rock wool between the cast iron cover and
the enameled steel cover. Then mount the upper
parts.
A masonry sleeve for pipe is delivered with the stove.
Place the sleeve in the chimney to prevent thermal
expansion from breaking the joint.
The pipe is connected to the connecting piece (2210-
391) with the bind (2210-395) so that the shorter end
of the pipe is towards the stove.
The stove must be connected to a chimney, which
fulfils the local building regulations. It is recommended
that the height of the flue is at least 3 m. The flue
diameter must be minimum ø 15 cm.
The first heating should be done with half effect and
the stove should then be allowed to cool, so that the
bricks and stones settle down. This first heating also
removes any eventual humidity from the bricks. If the
upper stones do not become evenly hot, small stones
are added to the hot spots to get an even draught in
the whole upper surface of the stone space.
3. List of parts
No. Part pcs weight kg
2230-387 Cast iron cover 1 20
2230-381 Front piece for grate 1 1,5
1456 Grate 243x315mm, cast iron 2 5
2230-385 Support, cast iron, for elements 1 1,4
2230-705 Precast support elements 4 18
85152 Fireproof brick 25x114x230mm 62 1,3
85154 Fireproof brick 65x114x230mm 47 3,5
5527 Peridotite stones:
Stone No.1 5-10 cm, package 2 30
Stone No.2 10-15 cm, 5 30
Stone No.3 over 15 cm 40
2230-749 Rock wool mat 1 8
2230-221 Mantle cylinder, lower 1 19
2230-223 Mantle cylinder, middle 1 3
2230-222 Mantle cylinder, upper 1 23
2230-224 Steel cover 1 4
2230-013 Ash room door 1 1
2210-391 Connecting piece for pipe 1 1
2210-393 Damper (inside connecting pcs)1 0,6
5334 Pipe 60° 1 2,5
2210-395 Bind (with pipe) 1 0,2
2210-394 Masonry sleeve (with pipe) 1 0,3
2230-016 “Löyly” lid 1 1,6
2230-012 Fire chamber door complete 1 16
(fastened to lower mantle)
Ash scoop 1 0,5
Ladle 1 0,2
Service hook 1 0,2
+ fireproof mortar (not included in the delivery) 15
chimney
masonry
masonry sleeve
pipe 60°
bind
stove

4. Safety distances to combustible materials
Front 1000 mm
Sides 500 mm 1)
Back 500 mm 1)
Upwards 1200 mm 2)
1) The safety distances can be reduced by 50 % when
using single light shielding and 75 % when using
double light shielding.
2) The safety distances can be reduced by 25 % when
using single light shielding and 50 % when using
double light shielding.
Single light shielding can be provided by a non-
combustible fiber-reinforced cement plate at least 7
mm thick, or a sheet metal plate at least 1 mm thick
and attached with a sufficient number of fastenings.
Double shielding can be provided from two of the
above plates.
The sheets should be attached to the back, and if
necessary to each other, with screws for example. A
space of at least 30 mm for ventilation must be left
between the surface that needs protecting and the
plate with pipe sleeves, for example, used as spacers.
Also the shielding must not extend to the floor or
ceiling.
Brickwork 55 mm thick, detached at the edges and at
a distance of at least 30 mm from the surface to be
protected is equivalent to single light shielding.
Similarly brickwork 110 mm thick and at a distance of
30 mm from the surface to be protected is equivalent
to double light shielding.
The stove should be placed on a non-flammable
immovable stand.
REGULATIONS OF THE LOCAL FIRE
AUTHORITIES MUST BE OBSERVED IN ADDITION
TO THE ABOVE INSTRUCTIONS.
5. Heating instructions
Wood, peat briquettes and paper can be used as fuel.
Chipboard, fiberboard and plastics are not allowed.
The fuel should be stored so that the temperature of
the fuel does not exceed 80 degrees C.
Open the smoke
damper and draw the
ash box open for 5-
10 cm. See that
sufficiently
combustion air
comes into the sauna
either from the valve
or through the door.
Note that the sauna
is not ready for
bathing until the
heating has been stopped and the löyly shutter is
opened.
Empty the ash box and see that sufficient space for
combustion air is left between the ashes and the fire
grate and space for circulation air during bathing.
The fire chamber is filled with firewood (preferably
small, dry birch wood) and set afire in the middle of
the pile. During burning the fire chamber door is kept
shut and the ash box open. When more than half of
the wood has been burned, the fire compartment is
refilled sufficiently often. Towards the end of heating
the draught can be lessened by the help of the ash
box.
Heating is stopped, when the lower parts of the
upper stones are red. For the last fill it is
advantageous to use small firewood, which burn up
quickly and do not leave much embers. Note that a
heat storage stove shall always be heated red hot to
prevent soot problems.
When there are almost no embers left, the ashes from
the grate are clattered to the ash box and the ash box,
fire chamber door and smoke damper are closed.
After this the redness spreads to the upper surfaces of
the stones and the stones become sootless. The first
löyly (to get the fumes out) is thrown with the smoke
damper open to remove the dust from the stones.
After this the sauna is ventilated.
The required löyly temperature is reached and
adjusted by opening the löyly shutter somewhat or by
removing it. The hot air circulation can be
strengthened also by drawing the ash box slightly
open.
If there is no ventilation
valve in the upper part
of the sauna, the sauna
can when necessary
be ventilated by closing
the löyly shutter and by
opening the flap in front
of the smoke damper.
This can also be used
for drying the sauna
after bathing. The
smoke damper must
then be shut (picture).
The Aito stove can also be used as a smoke sauna
stove. Towards the end of heating the stove is then
heated with the smoke damper closed and the löyly
shutter open.
The sauna stones should be checked from time to
time and replaced if crumbled. AK-68 has the
following amounts of peridotite stones:
60 kg size 5-10 cm
150 kg size 10-15 cm
40 kg size over 15 cm

6. ASSEMBLY PICTURE
NOTE:
The bricks are cut to shape at the place of assembly
BRICK LAYERS FROM BELOW:
Layer Bricks
1. 65 x 110 x 230
2.-3. 25 x 110 x 230
4.-7. 65 x 110 x 230
8. 65 x 65 x 110
9. Support elements for stones
N.B. The bricks in layer 7 should be cut so that the
foundation for the support elements is even.
THE STRUCTURE OF THE PRODUCT IS NOT TO
BE CHANGED AND OTHER ACCESSORIES THAN
THOSE APPROVED BY THE MANUFACTURER
ARE NOT TO BE USED WITH THE PRODUCT.
HAZARD OF FIRE OR DAMAGE TO THE
PRODUCT CAN BE CAUSED BY NOT OBSERVING
THE INSTRUCTIONS AND FIRE REGULATIONS.
Manufacturer:
WOOD HEAT FINLAND LTD
FIN-27230 LAPPI FINLAND
Tel. [phone]
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