29
Safety distances can be reduced if protection according to the instructions below is used, so
that the heater can be installed in a gap which is for example 1,100mm wide. A 30mm air
slot is left between the protective cover's upper and lower edge in order to ensure
sufficient ventilation.
2.6.2. Reduction of safety distances
Kastor protective walls and a stand are available. The chimney's isolated part must reach the
protective wall. Other protection is not needed.
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 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 beyond the door’s sides and a minimum of 400 mm in front of it. In this case, the
protection must be at least a 1 mm thick metal sheet.
If the stove is installed with one side and the back against a brick wall, safety distances of 50
mm to the side and 50 mm at the back are sufficient. If it stands with its back and both
sides next to brick wall, 100 mm should be left on both sides to ensure air circulation. At
the back, 50 mm remains sufficient.
The safety distances around a no insulated connection pipe can be reduced in a similar
manner. The pipe’s insulated part within the sauna must always extend to 400 mm below
the ceiling.
For chimneys, the minimum safety distances to flammable material differs from product to
product. Always check the manufacturer’s instructions. In case of doubt, approach your
local fire safety officials.
2.7. Connecting the cauiltron to chimney
2.7.1. Connecting the cauldron to a brick chimney
The Kastor caoltron can be connected to a brick chimney from the back or the top.For a brick
chimney connection, the safety distances and protectors named in chapter 2.4. and the
chimney’s masonry regulations must be adhered to.
2.7.2. Connection from the rear.
Make an opening in the brick chimney that is 2-3cm wider than the connection pipe.
Use a screwdriver to detach the rounded plate covering the hole in the inner back mantle. Move
this covering plate onto the hindmost hole on top of the stove. Place the connection pipe
delivered with the stove in its rear wall opening. Push the stove into its place. Make sure that the
connection pipe settles well into the hole in the chimney. Tighten the space between connection
pipe and chimney with a flexible, fire-proof material such as fire wool. Neaten the hole with a
Kastor covering, available at your hardware store. The covering is attached to the brick chimney
surface with metal attachments or fireproof glue. (Picture 2.4.)
2.7.3. Connecting from the top.
Place the heater's own connecting pipe to the heater's upper flue opening. (Check 2.4)
Make a hole in the brick chimney which is 2
–3mm bigger than the connecting pipe.
