IV Produkt Control Unit IVC3
IVC3 Basic Manual 2004-12-15.doc
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3. Alarms
3.1 Fan alarm
Fan alarm activates by fault indication from SA or/and EA after set delay. Alarm at closed contact.
Result: alarm category B, unit stops.
Setup
Setting
Description
Delay Fan Alarm 0-60 min
Time delay in IVC3 before a B-alarm is set and unit stops.
3.2 Fire alarm
Alarm activates by external fire alarm equipment. Alarm at open contact.
Result: alarm category A, unit stops.
3.3 Freeze protection alarm
Freeze alarm activates if temperature drops below set alarm limit.
Settings
Setting
Description
Alarm Freeze
0 - +60
°
C
Alarm limit for freeze guard, A-alarm is set and unit stops.
Result: alarm category A, unit stops.
3.4 Alarm pump/overheating
Alarm activates by fault indication from pump or if electrical heater indicates overheating. Alarm at
closed contact.
Alarm is set by a closing external contact.
Result water heater: alarm category B, unit stops if heater valve are opened, unit operates as usual if
heater valve are closed.
Result electrical heater: alarm category B, unit operates as usual, electrical heater stops.
3.5 Alarm pump/cooler
Alarm activates by fault indication from pump or alarm indication from cooler. Alarm at closed contact.
Result water cooler: alarm category B, unit operates as usual.
Result cooler: alarm category B, unit operates as usual, cooler stops.
3.6 Alarm revolving heat recovery
An inductive sensor via digital input detects if VVX are running. Alarm activates if sensor don’t signal
every 5 minutes when VVX are operating.
Result: alarm category B, unit operates as usual.
