250 mm (10”) behind the stove
(Or, at the sides and back up to a fireproofed wall; picture 2.3.).
2.3.1
.
Installation on wooden floor with a cast concrete base
On a wooden floor we recommend installation on a 60 mm (2 3/8”) thick, smoothly cast concrete
slab, which rises towards the back, with risers to provide a ventilation slit between it and the floor.
The stove is then straightened by adjusting the legs.
ATTENTION! Always check the carrying capacity of the wooden floor, as the loaded stove
weighs more than 100 kg. (220 lbs).
2.3.2
.
Installation on tiled and waterproof floor
A protective stove base is sufficient, a separate fronting plate is not necessary. Protective bases
are available at most hearth stores.
2.4. Safety distances and protections
2.4.1
.
Safety distances
For stone walls, the safety distances are 50 mm (2”) from the stove’s outer surfaces, preferably
100 mm (4”) to achieve sufficient air circulation. This means the stove will fit a niche of stove
width + 200mm (8”) (i.e. for the KS 20 that is 19 5/8” + 7 7/8” = 27 3/16”).
The safety distance to any flammable materials is 500mm (20”) from the stove’s outer surfaces.
In front of the stove, due to heat radiation and the working and maintenance space needed,
1,000 mm ( 40” ) is a reasonable distance, but 500 mm (20”) is sufficient to ensure safety, if the
panel in front of it does not heat up beyond 85
o
C (185 °F) during the burn-in.
The safety distance upwards is 1,200 mm (48”), measured from the stove upper surface.
If the flue pipe starts off from the top of the stove with a non-insulated connection pipe, the
required safety distance is 1,000 mm (40”) in all directions and 1,200 mm (48”) above.
The safe distance between a fitted water tank and the nearest flammable material is 150 mm
(6”).
These safety distances can be reduced by using protectors according to instructions given below.
These will enable you to install the stove in a space just 1,100 mm (44”) wide (I.e. for KS 20, the
width needed is 490 mm (19 5\8” )+ 250 mm ( 10” ) = 740 mm ( 29 5\8” )).
2.4.2
.
Reduction of safety distances
The required safety distances at the back and sides can be reduced by 50% using a single layer
of protection and by 75% with a doubled layer. The protection can be either a 1 mm thick metal
sheet or 7 mm of fibre-reinforced cement board (not gypsum board coated with paper or similar).
(Picture 2.4.2.)
A ventilation space of 30 mm (1
¼
”) must be left between wall and protector. The protector must
be detached from floor and ceiling (likewise between the plates for doubled protectors). If the
sauna has a flammable floor in front of the stove, the area to be protected extends 100 mm (4”)
beyond the door’s sides and a minimum of 400 mm (16”) in front of it. In this case, the protection
must be at least a 1 mm (3/64”) thick metal sheet.
If the stove is installed with one side and the back against a brick wall, safety distances of 50 mm
(2”) to the side and 50 mm (2”) at the back are sufficient. If it stands with its back and both sides
next to brick wall, 100 mm (4”) should be left on both sides to ensure air circulation. At the back,
50 mm (2”) remains sufficient.
4211-61 Kastor KS
6
3/25/11
Rev. 1
