IV Produkt Control Unit IVC3
IVC3 Basic Manual 2004-12-15.doc
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A rotation guard sensor connected to a digital input detects that the VVX is running. If the rotation
sensor don’t register a signal within every five minutes a B-alarm generates.
The revolving heat recover are running 12 minutes every 4 hour for conditioning.
2.5 Heater
By IVC3 an electrical or a water heater-battery can be controlled (selected in operation unit)..
Setup
Setting
Description
Config. Heater Water/El
Selection of a water-heater or an electrical-heater.
2.5.1 Water-heating-battery
Water-heater is controlled in sequence with heat-recovery by 0…10V signal.
Freeze guard in IVC3 controls temperature in heater-battery (Setp. Freeze) by open valve at
decreasing temperature. If heater water temperature are decreasing below (Alarm Freeze) fan stops
and a A-alarm generates.
Set point for freeze guard (Setp. Freeze) decreases 13° at running unit.
Circulation pump for warm water configures for either exercise or continues operation. If exercise are
selected the pump will stop when outdoors temperature exceeds set limit (Temp. pump stop) plus a 2°
hysteresis, pump will start when outdoor temperature decrease set limit.
The pump will always start if valve opens.
Pump run are off delayed 4 minutes.
Pump exercises one minute once a day when stopped.
Setup
Setting
Description
CP Heat
Exercise/
Cont.operation
Selects if pump should operates continuously or if it should
stop during summer.
Settings
Setting
Description
Temp. pump stop
-30 - +30
°
C
Selection of outdoors temperature for start/stop of
circulation-pump when configured as exercise
Setp. Freeze
0 - +60
°
C
Setpoint for minimum water temperature at non operating
unit (at operating unit the set point decreases with 13°).
Alarm Freeze
0 - +60
°
C
The water temperature for a freeze alarm, an A-alarm is set
up and the unit stops immediately.
Warm water valve (V)
Warm water temperature
(ºC)
Freeze guard, water heater
Setp. Freeze (unit stopped)
Setp. Freeze decr. 13º (unit runs)
0
10
4º
Alarm Freeze
A-alarm
Unit stops
