TECH ST-2640, User Manual, Page: 9 / 20

EU-2640 user’s manual
9
VI. Operating the controller
VI.a) Principle of operation
The EU-2640 controller determines the reheating need for a given zone on the basis of the current
temperature transmitted by the EU-261r room sensor as well as on the basis of the individual
operation algorithm for each zone.
Upon receiving such information, the EU-2640 controller activates the additional contact
which may be intended, e.g. for the operation of a heating device.
After the delay time (parameter: Main menu / Pump / Delay), the EU-2640 controller
activates the CH pump.
The signal from each zone is transferred to the EU-2640 strip via the EU-261r room sensor. Room
sensors communicate with the strip by means of radio communication.
Wired valve actuators may be connected to each zone as well as no more than nine wireless
actuators communicating with the EU-2640 strip by means of a radio signal (they require a
registration process).
VI.b) View and description of the main screen
The device is controlled by means of buttons located next to the display
1. Information about the current channel of radio communication
2. External temperature
3. Icon signaling the pump's operation
4. Icon signaling the activated additional contact
5. Current time
6. Navigation buttons
7. Information on zones:
The visible digit means a connected room sensor transferring information on the current
temperature in a given zone. If the zone is insufficiently heated, the digit flashes. In the
case of an alarm in a given zone, an exclamation mark is displayed instead of the digit.
With the use of buttons
as well as , the user may view the current settings of
subsequent zones.
8. Temperature of room sensor from a given zone
9. Set temperature in a given zone
10. Time until the end of manually adjusted set temperature
11. Information on the type of valid weekly schedule
o
3
1
6
7
8
10
2
3
4 5
9
11