UAB AMALVA we reserve the right to make changes without prior notice.
47
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
7.5.2.4. 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 maxi-
mum 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 oper-
ate.
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
Reset settings
Enable
Setpoint
15 °C
Minimum temperature ...
7.5.2.5. 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 available 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 “Out-
door compensated ventilation” and “VAV” functions.
7.5.2.6. Override function
Override (OVR) control of the unit can be performed by the external contact (see
Picture 6.3 b) or device (timer, switch, thermostat, etc.). The received signal from
the outside activates the OVR function, which ignores the current operation modes
of the unit and performs one of the selected actions listed below:
•
switches off the air handling unit;
•
switches over the unit to operation according to the mode “Comfort1”;
•
switches over the unit to operation according to the mode “Comfort2”;
•
switches over the unit to operation according to the mode “Economy1”;
•
switches over the unit to operation according to the mode “Economy2”;
•
switches over the unit to operation according to the mode “Special”;
•
switches over the unit to operation according to the weekly schedule.
Outdoor
temperature,
C
Ventilation
intensity,
%
Reset settings
Enable
Override
If on
Mode
ECONOMY 1
Override function
