Kratki VIKING Instructions De Montage page 34

OUTDOOR AIR SUPPLY
This pellet stove can be supplied with combustion air from the outside of the building. To assure a
safe and correct operation of the pellet stove, the outdoor air shall be supplied through a duct with a
minimum clear cross-section of 28 cm2, or a 60 mm I.D. or larger steel pipe. The inlet of the air intake
duct or pipe must be protected with a wire mesh or grate to prevent ingress of foreign objects. The
wire mesh / grate shall not disturb or reduce the intake air draught. The air intake duct / pipe shall have
the inlet guarded against wind, rain and snow. The air intake duct shall be straight along its whole
length, with the exception of a 90° pipe bend at the inlet and a 90° pipe bend at the air intake port
in the bottom of the pellet stove. The room in which the pellet stove is to be installed shall feature a
gravity supply of fresh air (do not provide the fresh air with forced draught ventilation) at 10 m3/h per
each 1 kW of heating power.
Fig. 4. Combustion air intake ducting: a) Rear air intake port; b) Bottom air intake port
The combustion air supply can be connected to the VIKING pellet stove from the back or from the bot-
tom (see Fig. 4). The pellet stove in its default configuration has the air intake port on the back. Follow
the instructions below to connect the combustion air supply to the bottom air intake port.
CAUTION:
Before repositioning the air intake port for the combustion air supply, the heating appliance
must be cold and isolated from power by unplugging the power cord.
34