The functions 4
11
We reserve the right to make any changes due to technical modifications.
Operating instructions RC20 room controller • Issue 08/2006
4.1.1 Selecting the operating mode
You may operate the RC20 room controller in two ways:
– in automatic mode
– in manual mode
4.1.2 Selecting automatic mode
Generally, homes are heated less at night than during the day. The
room controller changes over automatically between day mode
(standard heating mode) and night mode (setback heating mode).
This makes changing the thermostatic radiator valves in the
morning and evening superfluous.
The times at which the heating system changes from day to night
mode – and vice versa – are factory-set via heating programs
(see section 4.5 "What is a heating program?", page 20).
However, you can also select a different heating program from the
preset standard programs.
The heating program raises or lowers the room temperature at
fixed times. The time at which the system changes from night to
day mode (and vice versa) is known as the "switching point".
Fig. 3 Changeover between day and night mode at fixed times
21 °C
17 °C
day mode
night mode
5:30
22:00
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