4
x
Operation
15
BA ROTEX A1 BO - 10/2007
4
Operation
4.1
Controls on the boiler control panel
4.1.1 Control THETA 23R
Mains switch
Switches the oil condensing boiler on and off. When the heating system is on, the mains switch is illuminated green.
Burner malfunction indicator
During normal operation, the burner malfunction indicator is off. When it lights up, it indicates a burner malfunction.
For troubleshooting instructions, see chapter 6.2.
STL indicator
The STL indicator is off during normal operation. When it lights up, it indicates a safety temperature shutoff due to a serious
malfunction in the heating system (e.g. pump defect, clogging or air in the system). For troubleshooting instructions,
see chapter 6.4.
Pressure gauge
– Black pointer: Indication of the current water pressure in the heating system.
– Green range: Permitted water pressure range.
– Red pointer: Indication of the permitted minimum pressure.
The black pointer must be in the green range. If it is to the left of the red pointer, the water pressure must be increased by topping
up the system (see section 4.4.1).
The ROTEX oil condensing boiler A1 BO can be operated with the THETA 23R controller or with the ALPHA 23R
controller. The electronic digital controls are to be used for controlling 2 heating circuits (direct heating circuit,
mixer circuit) and a storage tank charging circuit.
You will find an exact description in the respective documentation on the ROTEX Control.
Fig. 4-1
Controls on the boiler control panel
1
Mains switch
2
Burner malfunction indicator
3
STL indicator
4
Manometer
5
Controller: Central unit THETA 23R
6
Rotary switch for selecting and setting functions
and parameters
7
Selecting the target room temperature during day
8
Selection of the reduced target room temperature
9
Selection of the target temperature for the hot water storage
tank
10
Selecting the operating mode
11
Setting automatic timer programme
12
System information
13
Manual button for emission measurement,
manual operation, reset function
14
Display
15
Compartment for quick reference instruction manual
16
Fixing screws for the control unit
17
Safety temperature limiter (STL)
Malfunctions are generally indicated by a fault code on the display.
For troubleshooting instructions refer to chapter 6 "Faults and malfunctions".
