5
2 DEVICE DESCRIPTION
The EU-28N controller is designed for CH boilers. It controls the CH water circulation pump, DHW domestic hot water pump
and blowing (fan). If the boiler temperature is lower than the set temperature, the controller is in the operating cycle, in which
the blower operates at all times.
If the boiler temperature is equal to or higher than the set temperature, then the controller is in the temperature maintaining
cycle, and the controller works by switching on the purges at a frequency depending on the user's settings. The duration of
operation and interruptions of purges in the maintaining cycle should be selected according to the type of fuel burned in the
boiler.
CAUTION
Each controller must be set individually, depending on the type of fuel used in the boiler, and also the type of boiler. TECH
is not responsible for incorrect controller settings.
In case of voltage loss, the thermoregulator will stop working. After the power supply is reconnected, the controller returns to
operation with previously set parameters thanks to its built-in memory. Lack of power supply does not delete the stored
thermoregulator parameters.
3 INSTALLING THE CONTROLLER
The controller should be installed by a properly qualified person only.
WARNING
Danger of injury or death due to electric shock on live connections. Before working on the controller, disconnect its power
supply and secure it against accidental switching on.
CAUTION
Incorrect wiring may damage the controller.
To Next Page
Loading...
Need help?
General
