31
13 Operating the control panel
Fig. 10
1 Fault lamp STL
Illuminates in case of fault.
2 auto/man/TÜV- switch
auto: Setting that must be chosen when the
rapidomatic
®
control unit is used. The setting
ensures that the burner and pump (Pump 1),
etc. is switched on and off on demand.
man: Setting to be chosen when only a room
thermostat (RTU) is used and if the
rapidomatic
®
control is disabled. The switch
position ensures that the burner is switched on
and off via the RTU and that the boiler water
flow temperature can be set with the boiler
temperature control unit. The pump (Pump 1)
pumps continually.
TÜV: The switch position is earmarked for the
inspection of the switch function of the safety
temperature limiter STB. The inspection may
only be carried out by a specialist.
GA 110 E
3
4
5
6
2
1
3 Boiler temperature control unit
This unit controls continuous control of the boiler water
flow temperature. Temperature settings from 33 -
85°C.
With built-in weather-sensitive rapidomatic
®
control the boiler temperature control must be
turned clockwise to end stop and set to maximum
value.
4 On/off main switch
With this switch the boiler is switched on and off.
5 Safety temperature limiter STB
The safety temperature limiter switches off the burner
in case the control devices are disabled. Automatic
restart is not possible. It is essential to have a special-
ist find the cause of the disablement of the system
before a restart can be executed. For release see
Chapter 10.2.
6 Installation of rapidomatic
®
weather-sensitive
heating system control unit or rapidomatic
®
S
domestic water supply control unit (accessory)
See installation manual of the respective control unit