IV Produkt Control Unit IVC3
IVC3 Basic Manual 2004-12-15.doc
6/18
2.5.2 Electrical heater.
Electrical heater are controlled in sequence with heat-recovery by a 0…10V analogue output.
At start of electrical heater the digital output will connect first and then will the analogue output starts
controlling.
Fan runs set time (3 minutes) for cooling down of electrical heater when unit shut down.
At fire alarm or emergency stop fans will stop immediately without any cooling down.
2.6 Cooler
IVC3 can in operating terminal be configured to control a cooler (Not installed / Installed).
2.6.1 Cooler, pump control
Circulation pump (CP cool) for chilled water configures for either exercise or continues operation. If
exercise are selected the pump will run/stop when valve opens/shuts.
Pump run are off delayed 4 minutes.
Pump exercises one minute once a day when stopped.
2.6.2 Cooler, DX-cooler
CP cool can be configured as DX cool for an one step cooler. Start and stop parameters for DX cool
are to be set in parameter menu (DX cool start / DX cool stop). DX cooler are start delayed 2 minutes
Heat recovery is delayed 2 minutes after a cooling sequence.
Setup
Setting
Description
Cool battery
Not installed/
Installed
Select if a cooler is to be controlled.
CP cool
Excesice/
Cont.operation/
DX-cool
Circulation pump, run at needs whit exercise.
Circulation pump, continuous run.
DX-cooler controls on/off by digital output.
Settings
Setting
Description
DX cool start
0 – 100%
Switch on point.
Visible only when Cool battery is selected as Installed.
DX cool stop
0 – 100%
Switch off point.
Visible only when Cool battery is selected as Installed.
2. 7 Chill recovery
IVC3 can in operating terminal be configured for chill recovery (Cool recycl., Not installed / Installed).
In cooling sequence the VVX will start if outdoor temperature exceeds extract air temperature more
than 2°.
VVX runs with 100% during chill recovery. Chill recovery stops when extract air temperature don’t
exceeds outdoors temperature.
Setup
Setting
Description
Cool recycle.
Not installed/
Installed
Select if chill recovery is to be used in cooling sequence.
