However, this
type of controller cannot control rotation of the fan.
If the boiler temperature is lower than the set temperature, the
controller operates the blower continuously. If the boiler
temperature equals or exceeds the set temperature, the
controller operates in the temperature maintenance mode.
ST-81 controller uses one instructions for different programme
versions depending on the type of the boiler. Programme
versions are developed for each boiler manufacturer
individually. Any comments regarding the programme should
be forwarded to a boiler manufacturer. A controller should be
set up to meet individual requirements, depending on the type
of fuel and a boiler. TECH shall bear no responsibility for the
erroneous setup of the controller.
II. Controller functionalities
This section describes controller functions, settings and
navigation issues.
II.a) Main screen
During normal operation of the controller, the LCD display
presents the main screen with the following information:
• Boiler temperature
• Set temperature
This screen enables quick adjustment of the set temperature by
means of and . The OPTIONS button takes you to the level 1
submenu. The LCD displays two first lines of the menu. You can
navigate around the menus by means of and .
The OPTIONS button takes you to another submenu or enables
an option (applies the changes).
The EXIT button takes you to the parent menu.
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