ST – 480
reboiler. It is the maximum difference between the set temperature (that
is required in the reboiler) and the current temperature in the reboiler at
which the HUW pump will activate. (for example: when the set
temperature has the value of 55
o
C and the hysteresis is 5
o
C. After
reaching the set temperature, that is 55
o
C, the HUW shuts down and
causes activation of the CH pump. Re-activation of the HUW pump will
proceed when the temperature decreases to 50
o
C).
III.4. TECH controller
A room controller can be connected to ST-480 controller. This
function allows to configure the controller by selecting “ON” option.
Additionally, the user may check the programme version of the room
controller.
After connection of TECH controller the user may check and change
the preset temperature of the central heating system, hot domestic water
and the mixing valve. Additionally all boiler controller alarms are
displayed. When the operation involves the mixing valve the user may
preview the current external temperature while viewing the main screen
with the valve parameters .
After TECH Controller option is enabled a letter "P" appears in the
upper part of the display in the main screen of the controller. A flashing
letter "P" indicates that the temperature in the room is too low. As soon
as the required room temperature is reached the letter "P" stops flashing
and stays on.
ATTENTION: No external voltage can be connected to the room controller
output.
III.5.
GSM module
NOTE:
Controlling of this type is possible after purchasing and connecting, to
the controller, the additional control module
ST-65
which is not attached to the
regulator as a standard feature.
The GSM module is an optional device cooperating with the boiler
controller, enabling remote control of the boiler operation with the use of a
mobile phone. The User is notified with a text message on each alert of the
boiler controller, and by sending an appropriate text message at any time, he or
she receives a return message with the information on the current temperature
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