ST – 480
V.
Protections
To ensure maximally safe and unfailing operation, the regulator has a
number of protections. In the case of an alarm, a sound signal is activated and
an appropriate message is shown on the display.
To make the controller return to operation, press
the pulse generator
.
V.1.
Temperature alarm
This protection is activated only in the
operation
mode (that is when the
boiler temperature is lower than
the set temperature
). If the boiler temperature
does not increase throughout the period set by the user, the alarm is activated,
the feeder and the blow-in are deactivated (the water pump is turned on
regardless of the boiler temperature) and a sound signal is activated. An
appropriate message will be shown on the display.
The alarm will be disabled after pressing
the knob of the pulse
generator
. The regulator returns to the recently set operation mode.
V.2.
Thermal protection
It is an additional bimetallic mini-sensor (located at the boiler temperature
sensor), disconnecting the fan and the feeder in the event of exceeding the
alarm temperature: 85
O
C. Its activation prevents the water in the installation
from boiling , in the event when the boiler overheats or the controller is
damaged. After activation of this protection, when the temperature goes down
to a safe value, the sensor will unlock automatically and the alarm will be
deactivated. In the case of damage or overheating of this sensor, the fan the
and feeder will be disconnected.
V.3.
Automatic sensor control
In the event of damage of each of the sensors the sound alarm is
activated, additionally signalling , the defect on the relevant display, e.g.: "
CH
sensor damaged
". The feeder and the blow-in is disabled. The pumps operate
according to the set temperatures, regardless of alarms.
In the case of damage of the CH sensor or the feeder, the alarm will be active
until the sensor is replaced with a new one. If the HUW sensor is damaged, one
should press the
menu
button, which will turn off the alarm and the controller
will return to the one pump (CH) operation mode. In order to ensure that the
boiler will be able to work in all modes, the sensor must be replaced with a new
one.
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