8
Operation Manual
3. Activation of the OVR function
Air handling units have the OVR function, which detailed description can be found in chapter 2.6. The OVR
function can be activated in two ways:
1. By the external control device.
Connection is described in chapter 1.4. After interconnecting (short-
circuiting) the FC contacts (see the electrical diagram), the unit will operate in the selected OVR mode and after
disconnection it will return to the previous operation mode.
2. By control panel.
In this case there is no need for additional connections to external control devices, the
function is activated from the panel, and the unit will operate in the chosen OVR mode until the internal timer is
active (from 1 to 90 minutes):
“On”
- OVR function on.
“Off”
- function off.
If the OVR function is active, the start-up window of the remote panel shows the 4th ventilation level. When
this function is active, the intensities of the supplied air and separately for the exhausted air fans can be adjusted
in the menu window „Ventilation“ from 20 to 100% (EC fans only).
4. Setting temperature value
Air handling unit maintains the user-defined temperature. The temperature setting is selected on the menu
window:
Intensity potentiometer on the automation box inside the air handling unit is not
used, its settings have no effect for the unit control when a control panel with
touch-sensitive buttons is connected.
5. Setpoint sliding
The setpoint can be shifted from -9 to +9°C from the temperature set value at specified by user time period. To
set setpoint sliding select menu window:
6. Season setting
For the air handling unit operating in most economical mode, summer and winter seasons have been provided.
• By setting “Winter” season, the heater operation is permitted.
• By setting “Summer” season, the heater operation is not permitted.
To set season select menu window:
Note:
If air temperature during summer season is insufficient, air handling unit can be preset and for “Winter”
season mode, its energy expenditures will be minimal.
Summary of Contents for DOMEKT series
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