Operating instructions

What you should know about your heating system2
10 Operating instructions RC30 programmable room thermostat • Issue 02/2006
We reserve the right to make any changes due to technical modifications.
Mixer module MM10
The supply of different flow temperatures to different heating
circuits in a heating system can only be achieved if a three-way
mixing valve is installed between the boiler and the second heating
circuit. This valve is controlled by the mixer module MM10
(accessory). Using an additional temperature sensor in the flow of
the heating circuit to be supplied, sufficient cold return water is
added to the hot flow water via the three-way mixing valve to
achieve the required lower temperature.
Low loss header module WM10
It is important to note that heating circuits with three-way mixing
valves require an additional pump. This pump enables the second
heating circuit to be operated independently of the first heating
circuit. A low loss header can be used for this hydraulic decoupling
between the boiler and heating circuit. This is controlled by the
function module WM10. The WM10 can also be used for DHW
heating via a cylinder loading pump.