Velleman VMB1TCW - Manual (Page 14)

Terminator
Normally only 2 ‘TERM’ terminators must be used in a complete Velbus installation. Usually this will be on the end of 2
bus wires (for example in the attic and in the basement.
On all other modules, the terminator must be removed.
Remark:
In case the wiring contains a lot of branches, still a terminator will be set on the end of 2 bus wires (= 2 terminators). When
communication errors occur, an additional terminator can be set as close as possible to one of the two existing terminators.
However, the number of terminators should be limited as more terminators place a heavy load on the bus (max 3).
Addressing
The address of the temperature controller is set via Velbuslink ©
Allocate the relay channels
Every temperature sensor module VMB1TS can steer a relay channel to:
 open the valve that provides hot water to the radiator
 switch on the fan of a convector to speed up heating (when the difference between desired temperature and room
temperature is too high)
 set the boiler in day mode
 switch on the air-conditioning
 switch on the circulation pump (when on of the valves is open)
 generate an alarm at low room temperature (heating system down)
 generate an alarm at high room temperature (valve fails to close)
Every relay channel that is steered by a temperature sensor must be placed in instant control.
The easiest way to allocate those relay channels is by using the Velbus link software via a PC connected to a Velbus
interface (VMB1USB, VMB1RS or VMBRSUSB).