Komfovent VERSO Pro P, Installation And Maintenance Service Manual

Page: 39 / 52

UAB KOMFOVENT we reserve the right to make changes without prior notice
V-C5.1_21-01
39
6.5.2.2. Operation on demand
The air handling unit start-up function is designed to start the unit which
currently off, when one of the selected parameters has exceeded the critical limit.
The function provided for the start-up of the unit according to:
• room CO
2
sensor;
• room air quality sensor VOCq;
• room air pollution sensor VOCp;
• room relative humidity sensor;
• room temperature sensor.
Operation on demand (start-up / shut-down) is performed by the
same sensor which is used in the control of the “Air quality function”.
A room sensor with the analogue output (0...10 V DC) should be de-
signed for this function.
6.5.2.3. 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.
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
outdoor
tempera-
ture, C
Ventilation
intensity, %
6.5.2.4. 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 functions: outdoor compensated ventilation and the air
quality function.
Reset settings
Enable
Setpoint
1000 ppm
Operation on demand
Reset settings
Enable
Winter stop
-15 °C
Summer start
25 °C
Winter start
5 °C
Summer stop
35 °C
Outdoor compensated ...
Reset settings
Enable
Start when indoor
25 °C
Stop when indoor
20 °C
Summer night cooling