EsiWelma
®
s.r.l.
E065.602_En Rev. 2 dated 04/12/2018
Pag. 2/8
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Central Unit UCE13.5
When the Central Unit is supplied with 230VAC, it runs a preheating phase for about
60s (green LED slow flashing 1Hz) during which the Central Unit and remote sensors
are inactive. After the preheating phase a test phase starts (green LED fast flashing
2Hz) in which the operation of Central Unit and remote sensors can be checked with the
use of test gas. After 3 min the system enters in normal operation. In case of a gas leak
or CO presence, where the gas concentration in the air exceed the preset threshold, the
UCE13.5 signals the alarm condition:
-
closing the manual reset solenoid valve
-
flashing the respective alarm red LED
-
activating the optional UZY20-R relay card and external buzzer (if present)
When the cause of alarm has been removed is necessary to push the reset button on
the front cover to return to normal operation. After reset:
-
red LED changes from flashing to steady on
-
UZY20-R relay card and external buzzer (if present) deactivate
-
solenoid valve remain closed and has to be open manually in order to re-establish
the normal gas supply condition
Green LED
(Power supply)
Yellow LED
(Fault)
Red LEDs (3)
(Alarms)
FUNCTIONS
OFF
OFF
OFF
Out of order
Flashing (1Hz)
ON
ON
Preheating
Flashing (2Hz)
ON
ON
TEST
ON
ON
ON
Normal operation
ON
ON
Flashing (1Hz) (1)
Sensor alarm
ON
OFF
OFF (2)
Sensor failed or not connected
(1) LED relevant to sensor in alarm condition
(2) LED relevant to sensor in fault condition
It is possible to restart TEST phase in any moment by pushing RESET button for at
least 10 s.
Note:
In case of damage for one or more sensors the central unit enter in alarm
condition closing the solenoid valve and activating the auxiliary devices if connected.
Operation
