TECH ST-2640, User Manual, Page: 7 / 20

EU-2640 user’s manual
7
IV. Radio communication
The EU-2640 controller may communicate with certain devices by means of radio communication:
Function Configuration
EU-261r room
temperature
sensor It makes it possible to
transmit information on
the current temperature
in the room - the current communication
channel needs to be the same
as in the EU-2640 regulator
- a given sensor should be
assigned to the selected zone,
the desired zone should be
adjusted in the sensor.
EU-291
external
temperature
sensor
It makes it possible to
monitor the external
temperature. - the current communication
channel needs to be the same
as in the EU-2640 regulator
STT-868
wireless
temperature
regulator
actuator
It makes it possible to
maintain the set
temperature.
- registration necessary in the
EU-2640 controller
V. First start-up
In order for the controller to operate correctly, the user should proceed according to the following
steps during the first start-up:
1. Connect the cables.
2. Switch on the controller's power supply.
3. If the set includes the EU-507 Internet module, the user should activate it in the controller's
menu:
Main menu / Fitter's menu / Internet module / Activated .
4. If the set includes an external sensor, the user should activate its operation by selecting:
Main menu / External sensor / Wireless.
5. Configuration of temperature sensors transmitting information on the current temperature in
a given zone.
a. The user should determine whether the current communication channel in the temperature
sensors is the same as in the EU-2640 regulator. The factory setting in both devices is
channel 35, so if the user has a new set there is no need to adjust the communication
channel. The communication channel should be changed to another only when the operation
of the devices is disturbed by other radio signals.
Changing the channel in the EU-261r room sensor:
It may be necessary to change the communication channel in the event of radio
interference. In order to change the channel to a different one, the user should press the
channel change button
twice - holding it the second time. When the LED on the sensor
flashes, this means that the channel change process has started. Holding the channel
change button all the time, the user should wait until the LED flashes as many times as
the value of the first digit of the requested channel number.