Operating instructions

Basic functions 7
21
We reserve the right to make any changes due to technical modifications.
Operating instructions RC30 programmable room thermostat • Issue 02/2006
7.2.1 Selecting automatic mode
Generally, buildings are heated less at night than during the day.
In automatic mode the RC30 changes over automatically between
day mode (standard heating mode) and night mode (reduced
heating mode). This means that you do not have to adjust the
thermostatic radiator valves every morning and evening.
The times at which the heating system changes from day to night
mode – and vice versa – are factory-set via the heating program.
However, you or your installer can modify this setting (see Chapter
8.9 "Selecting a preset heating program", page 40).
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".
Example: Activating automatic mode
Press "AUT".
The LED in the "AUT" button lights up; automatic mode is active.
In addition, either the "Day mode" or the "Night mode" LED is
illuminated. This depends on the set times for day and night mode
(see Chapter 2.4 "Why do I need a heating program?", page 8).
Depending on which heating circuit you have selected, "HEAT
CIRC 2" or "RC30 HEATCIR" may be displayed instead of "HEAT
CIRC 1" (see Chapter 8.6 "Selecting a heating circuit", page 35).
Fig. 5 Changeover between day and night mode at fixed times
21 °C
17 °C
Day "Normal" mode
Night "Reduced"
mode
5:30
22:00
HEAT CIRC 1
AUTO DAY
21.0
°