Advertisement
CHANNEL ISOLATION
Since the channels are mounted to the upper base, it must be carefully
isolated so that: humidity will not condensate on pipe surfaces, the air will
not freeze before heat has been stored, the heated incoming air will not
freeze before it is blown into interior.
The two main rules of channel isolation are:
The warm air channels are always isolated in outer conditions with at
least 10 cm of mineral wool and windscreen plating. The cold air
channels are always isolated in inside premises with 10 cm of mineral
wool and steam barrier plating, for instance AE-chase or AIM-mat.
(Figure 2)
CHANNELS OF OUTSIDE- AND EXHAUST AIR
The outside air will be obtained through 200 mm grate without an
insect net. The air inlet will be situated to as clean space as possible, far
from the refuse discharge, smokestack, ventilation outlet and exhaust air
tube. The air inlet will be located to a height of at least 2 meters from
ground on the northern side of the building, opposite side to the traffic.
Due to warm summer weather, the outlet channel has to be thermally
isolated in a loft space. Outgoing exhaust air will be channelled above the
rooftop through well-isolated channel and by 700-900mm high isolated
roof duct. (Figure 3).
Fireplaces like hearths, ovens and sauna heating systems must have
a separate isolated combustion air channels with slide coping.
INSTALLATION OF VENTS
Income and outlet vents are installed according to the plan. Special
attention is needed while installing income valve since a wrong vent in a
wrong place and wrong mounting will affect the air draught and reduce
satisfaction.
Steam barriers are well tightened.
In saunas, the income air is channelled above the sauna stove and
outlet will be taken from underneath the sauna platform. The sauna vents
are manually adjustable.
In kitchens, the outlet appliance should be the stove hood with
adjustment plate of three positions and an airflow gauge. The exhaust
vent is operated by the means of the adjuster. The kitchen exhaust will be
attached to the air exchange unit.
In case sound isolation is needed between the separate rooms,
cushioned air transfer vents are used, figure 4. Air transfer routes in
doorways and under the doors will greatly reduce the privacy.
Minimum insulation thickness for the duct, mm
Temperature difference between the
Duct
inside and outside air of the duct.
size
mineral wool
Figure 2 Channel isolation
Figure 3: Outside and exhaust air inlets.
Figure 4: Supply and transfer air vents
4
blowing wool
mineral wool
roof struss
steam barrier
.
Advertisement
