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2.5.2.3. Outdoor compensated ventilation
The ventilation compensation function adjusts the air volume depending
on the existing outdoor temperature. It is possible to enter four temperature
points, with two of them defining winter conditions and the other two defining
summer conditions. When compensation start and end points for both winter
and summer seasons are entered (it is also possible to enter only one of them,
example only winter compensation; in this case, the start and the end points of
summer compensation should be the same), the current ventilation intensity
will be decreased in proportion according to the outdoor temperature until it
reaches the minimum possible ventilation level of 20 %.
The ventilation compensation function does not operate when
summer night cooling function is active.
Ventilation
intensity,
%
2.5.2.4. Summer night cooling
Summer night cooling function is intended for energy saving during the
summer season: by utilizing the outside chill of night hours, it is possible to
cool down heated rooms, i.e. to remove excessive heat that accumulated in the
room during day hours.
Summer night cooling function can start at night (from 00:00 h to 06:00
h a.m.) at any time, even when the air handling unit is not working and is in
standby mode. User can set indoor temperature, at which this function starts
and stops.
When this function is active, the current ventilation level is switched to the
maximum ventilation intensity (100 %) and ventilation is performed only by
means of fans, i.e. at that time neither the air cooling nor the energy recovery
functions operate.
Summer night cooling function has an operating priority over the following func-
tions: outdoor compensated ventilation and the air quality function.
2.5.2.5. Minimum temperature control
In winter time the minimum temperature control function forcibly reduces
the supply and extract air flow set by the user when the heater capacity avail-
able in the unit is insufficient and/or heat recovery does not ensure minimally
possible temperature supply to the room. The user can set a separate supply
air temperature value so that when that value is not achieved, the intensity
of the ventilation unit starts to be reduced automatically. The air flow may be
reduced to the minimally possible ventilation intensity of 20 %.
During the summer, when the air handling unit provided with cooler, this
function according to the same user-set value limits the cooling capacity, thus
ensuring the minimum possible temperature supply to the room.
In ventilation intensity control, this function has top priority over
"Outdoor compensated ventilation" and "VAV" functions.
UAB KOMFOVENT we reserve the right to make changes without prior notice
C5.1_22-08
F1 – user-selected air flow (actual)
F2 – minimum air flow 20 %
W1 – winter compensation start point
Outdoor
W2 – winter compensation end point
temperature,
S1 – summer compensation start point
C
S2 – summer compensation end point
Outdoor compensated ...
Enable
Winter stop
-15 °C
Winter start
5 °C
Summer start
25 °C
Summer stop
35 °C
Reset settings
Summer night cooling
Enable
Start when indoor
25 °C
Stop when indoor
20 °C
Reset settings
Minimum temperature ...
Enable
Setpoint
15 °C
Reset settings
11
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