Regulator Functions - Main Menu; V.a) Firing-Up; V.b) Manual Operation - Tech Controllers ST-81 User Manual

Regulator Functions – Main Menu
V.
Due to the multifunctional nature of the controller, the menu is divided into the Main Menu and the
Servicing Menu. The user sets basic working parameters in the Main Menu: pre-set temperatures,
modes of operation etc. This is illustrated by the diagram below:
Firing-Up
V.a)
After the initial lighting up of the fire source in the boiler, the user should activate the firing-up function.
The fan will begin to operate in this mode in order to facilitate the firing-up (on a boiler which is not
yet heated). When the CH temperature increases to 30°C (the so-called fan threshold), the display
will show 'Switch Fan On/Off' instead of 'Firing-Up', the diode manual operation will go out and the
boiler will proceed to its operation mode. Using the 'Switch Fan On/Off' function, the user may switch
the airflow on or off (e.g. when adding fuel). Switching the fan off is signalled with the sign of a star
on the main screen in the display's bottom right-hand corner. This function enables the user to safely
operate the boiler. Opening the doors of the furnace with the fan switched on is forbidden.
If the boiler reaches a temperature of 35°C, the pump activates (or both pumps, depending on the
operation mode).
Manual Operation
V.b)
For the user's convenience, the regulator is equipped with the
ability to be set to Manual Operation where each executive
element is switched on and off independently of the others.
Pressing the OPTIONS button activates the engine of a selected
device (or alarm) which remains activated until the OPTIONS
button is pressed again.
Firing-Up
Manual Operation
Airflow Power
Operation in Support
Pause in Support
Blow-Through Power
Boiler Hysteresis
DHW Hysteresis
CH Pump Activation
DHW Pump Activation
Operation Mode
Room Regulator
Language
Factory Settings
Airflow Power
Fan
CH Pump
DHW Pump
Alarm
House Heating
DHW Priority
Parallel Pumps
Summer Mode
7
ST-81 v 81.035
Airflow power
Fan
CH pump
DHW pump