50
D. Installation - Ventilation
Outdoor temperature under which the decrease of
Air exchange
set
is activated (see
par. C.1).
Decrease of the %
Air exchange
(absolute value) set
for every 1°
decreasing of
Outdoor temp. set
.
Maximum decrease of the
Air exchang
e
set.
Outdoor temp. set
(Range: -30.0°...
10.0°
...50.0°)
Air exchange decr.
(Range:
0
%
...100
%
)
Maximum set decr.
(Range: 0
%
...
50
%
)
D.1.3.6.3 Decrease air exchange
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Conditionings>
Decrease air-exchage
This function allows decrease the % of air changes when outdoor temperature is very cold.
For every 1° decrease of outdoor temperature when the Block is activated (
Outdoor temp. set
), the %
Air exchange
is is decreased of the value set in
Air exchange decr.
, until a maximum value set in
Maximum set decr.
i.e. when considering the following sets:
Air exchange
= 20%
(see par. C.1)
Outdoor temp. set
= 10.0°
Air exchange decr.
= 10%
(% calculated on the
Air exchange
).
Maximum set decr.
=
50%
(as % calculated value of
Air exchange)
.
When outdoor temperature is higher that 10.0° (
Outdoor temp. set
) the
Air exchange
set will be 20%,
at 10.0° of outdoor temperature will be 18% (20% - 10% of 20%= 18%), due to decrease of 10% (
Air
exchange decr.)
for every lower outdoor temperature degree, up to a maximum decrease of 50%
(
Maximum set decr.,
as % calculated value)
which will bring set of
Air exchange=
10% at 6.0°C of
outdoor temperature.
OFF
AIR
EXCHANGE
SET
DECREASE
Outdoor
temperature
ON*
*Decrease of
Air exchange
Set
controlled by
Maximum decr.
Outdoor temp. set
Differential
fixed=1.0°
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