Klimor EVO-T Plus - Page 103

101
11.5.1 ALARMS LIST
Table 21
ALARMS Alarm type System response, procedure
Digital inputs
A_ThHE, A_3xTh
-
HE
Fading Blocking
Thermal protection of preliminary and/or secondary heater. The signal from
electric heater overheating thermostat or from electric heater alarm connector is
provided to this input:
Normal state – heater temperature is low, there is 24VAC signal on the digital
input
Alarm condition – heater temperature is too high, no 24VAC signal on the digital
input
Response to the alarm condition: the system operates without the heater until
overheating is eliminated, once overheating is eliminated the alarm disappears
and the system operates with the heater, if the A_ThHE alarm is triggered 3 times
within 1 hour, the system is stopped and the A_3xThHE alarm is displays, which
has to be conrmed.
Digital input Din1
A_ThHWair,
A_3xThHWair
Fading Blocking
Protection of the heater against freezing with an anti-freeze thermostat.
Normal state – temperature behind the heater is higher than set – on the ther-
mostat, there is a 24VAC signal on the digital input
Alarm condition – the temperature behind the heater is lower than set on the
thermostat, there is no 24VAC signal on the digital input Reaction to the alarm
condition: STOP system, heater 100% until the thermostat is heated up, after the
thermostat is heated up and there is no low thermostat temperature the system
returns to operation, after 3 times within an hour alarm A_ThHWair occurs, sys-
tem operation stops and alarm A_3xThHWair is displayed requiring conrmation.
Digital input Din6
A_AF Disappearing
Cooperation with re protection unit
Normal state – no re, there is 24VAC signal on the digital input Alarm state –
re is present, there is no 24VAC signal on the digital input
Reaction to the alarm state: STOP system until the re disappears, after the
re is extinguished, the system automatically returns to the operating state
equipment alarm
Digital input Din3
A_SupFilterES Disappearing
Testing of the pollution level of the intake ne lters
with a pressure with the automation the lters:
Normal state – dirt level is acceptable, pressure dierence before and behind
the lter is below the preset value, there is no 24VAC signal on the digital input.
Alarm state – dirt level is unacceptable, the pressure dierence before and
behind the lter is above the preset pressure switch, there is a 24VAC signal on
the digital input
Reaction to the alarm state: the system is working, an alarm of a dirty lter is
displayed,
In case of such an alarm it is necessary to replace the lter with a new one
immediately, working with a dirty lter lowers the AHU’s airow and may cause
the lter to break, which in turn may cause dirt and damage to heat/cooling
exchangers due to the customer’s fault.
Input depending on selection in the advanced settings menu