NARVI MIRVA Series Installation, Use And Service Instructions

INSTALLATION, USE AND SERVICE
GB
INSTRUCTIONS
SAUNA WOODBURNING STOVES
– MIRVA, STEAMMASTER, NARVI 30 AND NARVI 50.
SAFETY DISTANCES
Prior to installation of the sauna woodburning stove, ensure the required safety
distances to combustible structures are observed. For woodburning stoves the safety
distances are 500 mm to the sides and rear and 1,200 mm overhead. A min. 70 mm
thick concrete slab or a NARVI installation base should be installed beneath the
woodburning stove. For any further queries regarding fire safety, please contact your
local fire authority for assistance.
Note! If the sauna woodburning stove is installed above under-floor heating,
a NARVI installation base must always be used.
Combustible components
(wooden walls, benches etc.)
1. Distance to wooden components from vertical
sides of sauna woodburning stove without heat
shield min. 500 mm. (Figure 1)
2. The safety distance stated in section 1
(500 mm) can be reduced by half to 250 mm if
so-called light, single-layer thermal protection
is installed. A single-layer, light thermal shield
can be made from min. 7 mm thick fire-resistant
fibre-reinforced cement board or from min. 1 mm
thick metal sheet which has been fixed
sufficiently tightly to the wall. A ventilation gap of
30 mm must be left between the thermal shield
and the wooden surface, e.g. using pipe sleeves.
(Figure 2)
The heat shield must also be in non-contact
with the floor or ceiling.
3. The safety distance mentioned in section 2
can be further reduced by half (125 mm) if a
double shield is installed. A double thermal
shield can consist e.g. of two boards of the type
recommended in section 2 if a ventilation gap of
30 mm is left between the wall and the boards.
(Figure 3)
Figure 1
30 mm ventilation gap
1 mm metal plate or 7 mm
incombustible fibre-reinforced
cement board
Figure 2
30 mm ventilation gap
1 mm metal plate or 7 mm
incombustible fibre-reinforced
cement board
Figure 3