Corrigo ventilation 3.4 manu

Manual Corrigo Ventilation, revision R Chapter 17 Configuration 89
17.10 Chiller
Cooling
Water
Select chiller type: "Water", "DX", "DX with exchanger control" or "Not used".
For detailed description of DX-cooling, se section 5.1.4 Step controllers.
If DX cooling has been configured, there are submenus for setting of certain operation parameters.
Min limit lowering
If DX cooling is used in combination with room or extract air control, the supply air temperature
minimum limit value can be lowered to give smoother (more continuous) running of the chillers.
The set lowering of the limit value is activated when the DX cooling is running.
Lowering of min
limit for supply air
control on active
DX cooling: 5.0°C
This parameter is also used for setting the lowering of the cooling setpoint when running "DX
cooling with exchanger control".
See 5.1.4.
Blocking the DX cooling at low outdoor temp
Outdoor temperature dependent blocking of DX cooling is individually settable for each cooling
step. If the outdoor temperature is below the set value, it is not possible to activate the cooling step.
The function has a 1K hysteresis, i.e. if a cooling step is blocked, it can only be activated again
when the outdoor temperature has risen to 1K above the set value.
Block DX-cooling,
step1, at outdoor
temp lower than
13.0 °C
Blocking of DX cooling on cooling pump alarm
DX cooling can be blocked on activation of the cooling pump alarm.
Block DX-cooling
on alarm
”Malfunction P1
Cooler”:No
Override of reduced speed for DX cooling
Override to normal quantity of air for DX cooling when the unit runs on reduced quantity of air. The
fans can be set to normal operation when cooling is required at high outdoor temperatures (e.g.
>14°C, the same temperature limit as for blocking of DX cooling).
Force normal
speed if active
DX-cooling:Yes