2
A
50
400
400
110/55 mm
X
100 100
400
500
500
250
250
400
125
125
500
A
50
400
400
110/55 mm
X
100 100
400
500
500
250
250
400
125
125
500
A
50
400
400
110/55 mm
X
100 100
400
500
500
250
250
400
125
125
500
INSTALLATION, USER AND
MAINTENANCE INSTRUCTIONS
NARVI SAUNA HEATERS NC 16, NC 20, NC 24 and NC 20 VS.
SAFETY INTERVALS
Before installing the sauna heater ensure the required safety clearances for
structures made of inflammable material are met. The safety clearances of the
wood-burning sauna heater are 500 mm to the sides and to the rear and 1200
mm upwards. At the base of the sauna heater, a concrete board of at least 70
mm or KOTA installation base must be used. If you are unsure please contact
your local rescue board for guidance.
NB! If the sauna heater is installed on top of floor heating, a KOTA installation
base must be used.
Inflammable construction parts, such as
wooden walls, sauna seats, etc.
1. Minimum distance from the vertical surfaces
of the sauna heater to unprotected wooden
parts 500 mm. (Figure 1)
The protection must also be clear of the floor
and the ceiling.
2. The safety clearance mentioned in
paragraph 1 can, however, be reduced by
half (250 mm) when “light-single” protection
is used. Single-light protection of this type
can be made of a non-combustible, fibre-
reinforced cement board of at least 7 mm thick
or of a metal plate of at least 1 mm, which has
been fastened securely enough to the wall. A
ventilation gap of at least 30 mm must be left
between the wooden surface to be protected
and the safety plate by using piping collars.
(Figure 2)
3. The safety clearance in paragraph 2 can be
further reduced to half (125 mm) when double
protection is used. Double protection can be
made of two plates as described in paragraph
2 and, then a ventilation gap of at least 30 mm
must be left between the wall and the plates.
(Figure 3)
30 mm ventilation gap
1 mm metal plate or 7 mm
non-combustible, fibre-
reinforced concrete board
Figure 1
Firgure 2
Firgure 3
30 mm ventilation gap
1 mm metal plate or 7 mm
non-combustible, fibre-
reinforced concrete board
EN