Operating instructions

What you should know about your heating system2
6 Operating instructions RC30 programmable room thermostat • Issue 02/2006
We reserve the right to make any changes due to technical modifications.
2.2 Control modes for the RC30
The RC30 can operate in three control modes:
– outside temperature dependent control
– room temperature control or
– outside temperature control with room temperature influence
Outside temperature dependent control
With outside temperature dependent control, only the outside
temperature measured by the outside temperature sensor is taken
into account for the flow temperature level. The advantage of
outside temperature dependent control is that the overall heat
requirement of the house is considered, rather than the
temperature in a single reference room where the thermostat is
located. Room temperature fluctuations through solar gain,
occupants, open fireplaces or similar external heat sources are
then ignored.
If you use this type of control, adjust the thermostatic radiator
valves so that the required room temperature is obtained in each
room.
Room temperature control*)
A further possible RC30 method is room temperature control. The
RC30 calculates the temperature required inside the boiler or the
output required from the boiler, subject to the set and the actual
room temperature.
To be able to utilise the room temperature control, you require a
room which is representative of your whole home. All factors
influencing the temperature in this "reference room" – in which the
RC30 is located – will also apply to all other rooms. Not every
home has a room which meets these requirements. A pure room
temperature control has, in such cases, certain limitations.
Should you, for example, open a window in the room where the
room temperature is measured, the control unit will "think" that you
have opened the windows in all rooms in your home and will begin
to heat more vigorously.
*) Please note that the RC30 has to be located in the reference room and not in the boiler for this
option