Velleman VMB1TS - Manual (Page 40)

40 VMB1TS manual – edition 2
The passage automatically 3° cooler than the office
When the sensor module in the office is set to day-mode, the temperature in the passage must be 3° lower than the
office. Is the day temperature of the office is set to 20°C the desired passage temperature will be 17°C.
When the sensor module in the office is set to night-mode, the temperature in the passage must be 3° lower than the
office. Is the night temperature of the office is set to 15°C the desired passage temperature will be 12°C.
Configuration:
The easiest way to configure the system is to use the Velbus link program via a PC connected on the Velbus PC
interface (VMB1USB, VMB1RS of VMBRSUSB).
However, configuration can also be done without the aid of a computer. Refer to the procedure below.
1. Link the heating output of the office sensor to a relay channel.
2. Use the relay channel to control the valve of the office radiator.
3. Link the heating output of the passage sensor to another relay channel.
4. Use this relay channel to control the valve of the passage radiator
5. On the temperature controller, select the office sensor.
6. Go to the extended menu.
7. Scroll to the sensor setup menu and select it.
8. Scroll to the ‘diff. sensor’ submenu and select it.
9. Choose the passage sensor and confirm.
10. Scroll to the ‘Temp. diff.’ submenu and select it.
11. Set the temperature difference to -3° and confirm.
12. Quit the menu.
The configuration is now finished and the differential thermostat is enabled.
Remarks:
• Make sure both sensors are in heating mode (frost flower LED on the sensor is off).
• The passage temperature can never be higher than the preferred setting of its selected mode (anti-freeze, night,
day or comfort).
Office Passage