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3
Information for the specialist
3.1 Function overview
The selected control modes and activated functions depends on the selected configuration. Find more
information about the available configurations in the document Optigo Ardo 1.0 - Predefined
configurations, which is available on Regin's homepage www.regincontrols.com. A description about the
activation of a configuration will be found in chapter 4.1 Predefined configurations in Optigo
The program for an air handling unit contains, apart from other things, the following functions:
Different temperature control modes
Supply air temperature control
✓
Room temperature control (cascade control)
✓
Extract air control (cascade control)
✓
With control of:
Heat exchangers (plate)
✓
Mixing dampers
✓
Heating coil (water with or without frost protection, electric with high temperature limit switch)
✓
Cooling (water)
✓
Circulation pumps
✓
Fan control
1- or 2-speed supply air and extract air fans
✓
Manual control of fans
✓
Timer control
For starting and stopping the unit, annual clock function. One output for control of external functions such
as lighting, door locks etc.
Demand controlled ventilation
In buildings with strongly varying occupancy, the fan speeds or mixing dampers can be controlled by the air
quality measured by a CO
Support control
When using the control function room control or extract air temperature control, it is possible to utilise
support-heating and/or support-cooling.
Free cooling
When this function has been activated, it is used during the summer to cool the building during the night
using cool outdoor air, thereby reducing the need to run chillers during the day.
Free heating
If the outdoor temperature is higher than the indoor temperature and there is a heating demand, the
recovery damper will not open for recovery but instead open fully for outdoor air. This may occur during low
night-time outdoor temperatures, when the room has been cooled considerably and the outside heat is rising
faster than indoors. This function is activated at the same time as Free cooling.
Cooling recovery
If the cooling recovery has been configured, there is a cooling requirement and the extract air or room
temperature is a settable amount lower than the outdoor temperature, thus cooling recovery can be
Optigo
Ardo
manual, Rev. A
sensor.
2
Information for the specialist
Ardo
.
19 (76)
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