ST – 450 z PID
installation.
V.5.
Protection against boiling of water in the boiler
This protection is applies only to
reboiler priority
operation mode. When the
set reboiler temperature is e.g. . 55
O
C and the actual temperature in the boiler
increases up to 62
O
C (this is the so-called the priority temperature), then the
controller will turn off and the feeder the fan. If the temperature in the boiler
still increases up to 80
O
C, the CH pump will be activated. When the
temperature still increases, then the alarm will be activate at the temperature of
85
O
C. Most often such a condition may appear when the reboiler is damaged,
the sensor is improperly fitted or the pump is damaged. However, when the
temperature drops, then at the threshold of 60
O
C the controller will turn on the
feeder and the blow-in and will run in the operating mode until the temperature
of 62
O
C is reached.
V.6.
Control of the outlet flue gas temperature
This sensor is used to continuously monitor the outlet flue gas temperature. In
the case of sensor failure or in the event of the sensor getting unplugged from
the controller or pulled from the flue the display will show an
exclamation
mark
instead of the current flue gas temperature. This will cause the controller
to enter emergency mode. In this case only the boiler temperature will be taken
as input. The controller will be controlled only with the boiler sensor and the
modified PID function will continue to run without the flue gas sensor, which will
significantly deteriorate the accuracy of temperature control.
V.7.
Fuse
The regulator has a WT 6.3A tubular fuse insert, protecting the network. Using a
fuse with a higher value can cause damage to the existing controller.
ATTENTION:
The fuse of higher value should not be used. Assembling the fuse
with a higher value may cause damage to the controller.
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