EN
UAB KOMFOVENT we reserve the right to make changes without prior notice
C5.1-20-05
10
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 condi
-
tions. When compensation start and end points for both winter and summer sea-
sons 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 propor-
tion according to the outdoor temperature until it reaches the minimum possible
ventilation level of 20 %.
The ventilation compensation function does not operate when sum-
mer night cooling function is active.
Reset settings
Enable
Winter stop
-15 °C
Summer start
25 °C
Winter start
5 °C
Summer stop
35 °C
Outdoor compensated ...
F1 – user-selected air flow (actual)
F2 – minimum air flow 20 %
W1 – winter compensation start point
W2 – winter compensation end point
S1 – summer compensation start point
S2 – summer compensation end point
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 fol-
lowing functions: outdoor compensated ventilation and the air quality
function.
Reset settings
Enable
Start when indoor
25 °C
Stop when indoor
20 °C
Summer night cooling
Outdoor
temperature,
C
Ventilation
intensity,
%
Reset settings
Enable
Setpoint
15 °C
Minimum temperature ...
2.5.2.5. Minimum temperature control
In winter time the minimum temperature control function forcibly reduces the sup-
ply and extract air flow set by the user when the heater capacity available in the
unit is insufficient and/or heat recovery does not ensure minimally possible tem
-
perature 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 func-
tion 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 “Out-
door compensated ventilation” and “VAV” functions.
