Velleman VMB1TS - Manual (Page 10)

10 VMB1TS manual – edition 2 – rev.3
OVERVIEW HEATING INSTALLATION
A heating installation usually consists of radiators or convectors, a boiler, circulation pump and a collector with valves
for every radiator group.
Every room is equipped with a temperature sensor VMB1TS which is controlled by one or multiple temperature
controllers VMB1TC. The sensors in turn steer the relay modules VMB4RY (or VMB1RY) that control the valves. As
soon as one of the valves is opened, a relay channel can activate the circulation pump and when one of the sensors
is in day or comfort mode, a relay channel can put the boiler in day mode.
When convectors with built-in fan are used, a relay channel can steer this fan in case the room temperature deviates
too much from the desired temperature, e.g. to speed up heating in the morning.