System Description; Installing The Controller - Tech Controllers EU-ML-12 User Manual

II. SYSTEM DESCRIPTION
The EU-ML-12 additional controller is a part of heating control system that enables expansion of the existing installation with
additional zones. It has RS 485 and wireless communication. Its primary function is to maintain the preset temperature in
each zone. The EU-ML-12 is a device that, together with all peripheral devices (room sensors, room controllers, floor sensors,
external sensor, window sensors, thermostatic actuators, signal enhancers), forms the entire integrated system.
Through its extensive software, the EU-ML-12 control board can perform a number of functions:
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controlling for dedicated wired regulators: EU-R-12b, EU-R-12s, EU-F-12b and EU-R-X
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controlling wireless regulators: EU-R-8X, EU-R-8b, EU-R-8b Plus, EU-R-8s Plus, EU-F-8z or sensors: EU-C-8r, EU-C-mini,
EU-CL-mini
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controlling for external sensors and weather control (after registering the sensor in EU-L-12)
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controlling for wireless window sensors (up to 6 pcs per zone)
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possibility to control STT-868, STT-869 or EU-G-X wireless actuators (6 pcs per zone)
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possibility of operating thermostatic actuators
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possibility of operating mixing valves – after connecting the EU-i-1, EU-i-1m valve module
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control of the installed heating or cooling device by means of voltage-free contact
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enabling one 230V output to pump
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possibility to set individual operating schedules for every zone
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possibility of updating the software via its USB port
III. INSTALLING THE CONTROLLER
The EU-ML-12 control board should only be installed by a properly qualified person.
CAUTION
You can only connect 4 EU-ML-12 boards in series to the EU-L-12 main board.
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.
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