IKI KIVI-IKI, Instructions For Installation Manual

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KIVI‐IKI wood‐burning stove: instructions for installation and use
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3. AIR VENTILATION AND FRESH AIR FLOW
The ventilation needs to be designed to ensure enough fresh air for clean burning and for the
sauna‐bathers to breathe comfortably. Well‐designed ventilation also helps the sauna room dry
after bathing. There are many mechanical ventilation systems available by various different
manufacturers.
3.1 Gravitational ventilation
The air should be led from outside through a pipe with 50‐100 mm grate and charging valve into
the proximity of the stove at floor level (50‐100 mm above the floor). Fresh air should be led from
outside through a 100 mm pipe to about 50‐1000 mm above the stone base.
Exhaust air should be led outside of the sauna through a pipe with an adjustable grate and a
charging valve, which should ideally be located at the opposite wall to the stove, preferably
between the mid and upper benches. The pipe should exit the outer wall just below the roof. The
exhaust valve can be located in the ceiling or close to the ceiling at the opposite wall to the stove.
If the in‐coming air is led in through a valve in the door between the sauna and washing room or a
gap under the door, fresh air needs to be led to the washing room from outside.
The air routes must be kept open during bathing and drying the sauna afterwards. The grates need
to be installed so that they cannot get blocked.
As the fire burns in the stove the air circulates in the sauna: the oxygen‐rich air flows upwards and
warms up and the hot exhaust air is sucked out to the outlet channel through the vent in the
opposite wall that leads it outside.
3.2 Mechanical ventilation
Mechanical ventilation assists the air to circulate more efficiently. The principle for the placement of
air vents is the same as for gravitational ventilation.
3.3 Flue gas fans and use of multiple furnaces

We do not recommend the use of a flue gas fan. The high temperature of the flue gas may
break the fan.

If there is more than one furnace in the sauna room, the flue gas of each needs to be led
out to individual outlet channels (e.g. a boiler and a stove require a 2‐inlet pipe).

The arrangements for air ventilation need to be considered case by case accounting for the
size of the room and the amount of furnaces, and controlled with an adjustable valve.