EVCO c-pro kilo AHU - Manual (Page 82)

C-PRO KILO AHU APPLICATION MANUAL
Pag. 82
7.2.1 Air Flow Meter Alarm
The flowmeter can be managed after the initial startup phase of the unit and after the Ritardo
flussostato da reset PA28 (Flowmeter delay from reset PA28): once this time elapses, if the
contact indicates lack of flow, the alarm will immediately go off.
During normal operation the flow sensor is continuously monitored: if the contact indicates
lack of flow for a period greater than that at parameter PA29 the alarm will immediately go
off.
The flowmeter alarm is restored manually, activation requires the shutdown of the unit
bringing it to the state of OFF da alarm (Alarm OFF).
7.2.2 Anti-freeze Alarm
The method used to enable the alarm is configurable with parameter PA35:
- PA35=0: alarm disabled
- PA35=1: alarm at digital input
- PA35=2: alarm at anti-freeze temperature probe (implies enabling the probe with
PH43=1)
Unit
ON
OFF
Flow
ON
ON
Alarm
PA28 PA29 PA29
PA38: Set Point
OFF
PA39 Diff.
ON
T. anti-freeze air
Anti-freeze probe alarm