Klimor EVO -T, Руководство по эксплуатации и обслуживанию, Страница: 69 / 164

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Table no. 15 Alarms list
Alarms
Alarm
type
System response, action / Alarms list
A_AF
Fading
Cooperation with fire alarm system
Normal condition – no fire, 24VAC signal at digital input
Alarm condition – fire, no 24VAC signal at digital input
Response to the alarm condition: system STOP till the fire is
eliminated, once the fire is eliminated the system automati-
cally reverts operation to the state before the alarm occurred
Digital input Din1
A_T
hHW
air
A_3x
ThW
air
Fading
Blocking
Anti-frost heater protection with the anti-frost ther-
mostat
Normal condition – temperature downstream the heater is hi-
gher than temperature set on the thermostat, there is 24VAC
signal at digital input
Alarm condition – temperature downstream the heater is
lower than temperature set on the thermostat, there is no
24VAC signal at digital input
Response to the alarm condition: system STOP, heater 100%,
till the thermostat is heated up, once the thermostat is heated
up, confirm the alarm in the alarm menu, once confirmed and
if there is no low temperature present, the system resumes
the operation after triple occurrence of A_ThHWair within an
hour, the system stops working and the A_3xThHWair alarm
requiring confirmation is displayed.
Digital input Din2
A_T
hHE
, A_3x
ThHE
Fading
Blocking
Overheat protection of the electrical heater, a signal
from alarm relay of the HE module installed in the po-
wer supply control cabinet which controls the electrical
heater is feed to this input:
Normal condition – heater temperature is low, 24VAC signal on
the digital input
Alarm condition – heater temperature is too high, there is 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_3×ThHE alarm is
displays, which has to be confirmed.
Digital input Din2
A_Fil-
ter
Fading
The air supply/exhaust filter contamination level in-
spection using the pressure gauge:
Normal condition – permissible contamination level, pressure
difference downstream and upstream the filter is lower than
the one set on the pressure gauge, no 24VAC signal at digital
input
Alarm condition – unacceptable contamination level, pressure
difference downstream and upstream the filter is higher than
the one set on the pressure gauge, 24VAC signal at digital input
Response to the alarm condition: the system operates, the con-
taminated filter alarm is displayed, if such alarm occurs, install
the new filter immediately, AHU operation with contaminated
filter can reduce the AHU efficiency and can lead to the filter
damage which in turn can cause contamination and damage
of heat/cool exchangers (that would be a customer’s fault).
Digital input Din3
A_Sup-
Pres
Blocking
Air supply fan operation inspection using the pressure
gauge: this input is supplied with the signal from a
pressure gauge installed at the air supply fan, via an
intermediate relay installed in the EH EVO-T control ca-
binet which energizes and controls the electric heater:
Normal condition – fan compression is examined 30 seconds
after starting the system, pressure difference downstream and
upstream the fan should be higher than one set on the pressu-
re gauge, 24VAC signal at digital input
Alarm condition – no fan compression 30 seconds after starting
the system, pressure difference downstream and upstream the
fan is lower than one set on the pressure gauge, no 24VAC
signal at digital input
Response to the alarm condition: the system is stopped, check
the fan and find out the problem with compression, once the
problem is eliminated confirm the alarm and start the system
Digital input Din4
A_
VentFC
Blocking
Air supply/exhaust fan operation inspection using the
inverter alarm contact or EC motor controller:
Normal condition – no alarm immediately after starting the
system, alarm contact is shorted, 24VAC signal at digital input
Alarm condition – alarm immediately after starting the sys-
tem, alarm contact is open, no 24VAC signal at digital input
Response to the alarm condition: the system is stopped, check
the inverter and its connection to the ELP11R19L BAC+ contro-
ller and fan, find out the problem source, once the problem is
eliminated confirm the alarm and start the system.
Digital input Din5
PT1000 Sensor input
A_Tsup Blocking
Air supply temperature sensor operation inspection:
Normal condition – no alarm, sensor connected
Alarm condition – alarm triggered, sensor disconnected or faulty
Response to the alarm condition: the system is stopped, check
the sensor and its connection to the ELP11R19L BAC+ con-
troller, determine the problem source, once the alarm source
is eliminated the alarm is reset automatically and the system
resumes operation
Sensor input PT1
A_Texh Blocking
Air exhaust temperature sensor operation inspection:
Normal condition – no alarm, sensor connected
Alarm condition – alarm triggered, sensor disconnected or faulty
Response to the alarm condition: the system is stopped, check
the sensor and its connection to the ELP11R19L BAC+ con-
troller, determine the problem source, once the alarm source
is eliminated the alarm is reset automatically and the system
resumes operation
Sensor input PT2
A_Tout Blocking
External temperature sensor operation inspection:
Normal condition – no alarm, sensor connected
Alarm condition – alarm triggered, sensor disconnected or faulty
Response to the alarm condition: the system is stopped, check
the sensor and its connection to the ELP11R19L BAC+ con-
troller, determine the problem source, once the alarm source
is eliminated the alarm is reset automatically and the system
resumes operation
Sensor input PT3