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15. ALARMS DESCRIPTIONS
15.1 FUMES MAX. TEMP. EXCEEDING
The alarm occurs after exceeding the
maximum fumes temperature. Turns off the
fan. It aims to protect the fumes
temperature sensor from damage due to the
impact of temperature exceeding the
strength of the sensor. Once the
temperature drops, the regulator resumes
normal operation.
15.2 BOILER MAX. TEMP. EXCEEDING
Protection against boiler overheating is done
in 2 steps. In the first step , after exceeding
Boiler cooling off temperature, the controller
tries to reduce boiler temperature by
dropping excess of heat to the HUW silo and
by opening mixer servomotors (only when
mixer service = activated CH). If
temperature measured by HUW sensor
exceeds value Max. temp. of HUW then HUW
pump is deactivated, what is done to protect
users against scalding. If boiler temperature
decreases, then the controller returns to
normal operation. If the temperature will still
increase (reaches 95 degrees C) then
constant alarm will be activated of boiler
overheating joined with sound signal.
The alarm can be deleted by pressing
„TOUCH and PLAY” button or activating and
deactivating power to the controller.
Attention: locating temperature
sensor outside water coat of burner
i.e. on exhaust pipe is not
beneficial, because it may cause
delay in detecting boiler
overheating state!
Pic. 28 An example of the boiler overheating alarm.
15.3 BURNER MAX. TEMP. EXCEEDING
Alarm appears after exceeding burner
temperature above service parameter:
Service settings → Burner settings →
Other → Max. burner temp.
If the burner temperature increases above
this value the controller will begin burning off
procedure.
Alarm is deleted automatically after burner
temperature decrease by 10C.
Function which protects against
back fire does not work when The
controller has no electrical power.
The controller can not be used as
sole protection of boiler against
back fire. Additional protecting
automatics is to be used.
15.4 BOILER TEMP. SENSOR DAMAGE
Alarm appears by boiler sensor damage and
by exceeding measuring scope of this sensor.
When alarm appears the boiler is activated.
Deleting is done by pressing TOUCH and
PLAY button or by deactivating and
activating the controller. The sensor is to be
checked and replaced if necessary.
Checking the temperature sensor is
described in point 12.9
15.5 BURNER TEMP. SENSOR DAMAGE
Alarm appears when burner sensor is
damaged or by exceeding measuring scope
of this sensor. After alarm the boiler is burnt
off.
Deleting is done by pressing TOUCH and
PLAY button or by deactivating and
activating electrical power to the controller.
It is necessary to check the sensor and
replace it if necessary.
Checking temperature sensor is
described in point 12.9.
The controller can operate by
disconnected feeder temperature
sensor, after setting parameter
max. burner temperature =0
However it is not recommended,
because it causes deactivation of
boiler protection function against
back-firing to fuel silo.
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