43
16
ALARMS DESCRIPTIONS
16.1
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 HW silo and
by opening mixer servomotors (only when
mixer
service
=
activated
CH
).
If
temperature measured by HW sensor
exceeds value
Max. temp. of HUW
then HW
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.
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!
16.2
FEEDER MAX. TEMP. EXCEEDING
Alarm appears after exceeding feeder
temperaturę above service parameter:
MENU – Service settings – Burner
settings – Max. burner temp.
If the feeder temperature increases above
this value the controller will begin burning off
procedure.
Alarm is deleted automatically after feeder
temperature decrease by 10
C.
Function which protects against
back fire does not work when
feeder sensor is disconnected or
damaged.
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.
16.3
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
16.4
FEEDER TEMP. SENSOR DAMAGE
Alarm appears when feeder sensor is
damaged or by exceeding measuring scope
of this sensor. After alarm the boiler is burnt
off.
Summary of Contents for Cieplo ecoMAX850P2-C
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