A
Acknowledgin g a fault disp lay
....... 79
Adjusting the room temperature
.... 45
B
Boiler temperature sensor
............ 91
Brief scans
.................................. 71
Burner removal
............................ 31
C
Calling up fault messages
............. 80
Cancelling a fault display
.............. 79
Code 1
........................................ 50
Code 2
........................................ 52
Comfort sen sor
............................ 91
Connection diagrams
.................. 111
Control unit
............................. 97 , 98
Controls
................................. 97 , 98
D
Declaration of Conformity
............ 124
DHW heating
........................ 98, 100
Diaphragm exp ansion vessel
........ 20
Display elements
.................... 97 , 98
E
Electrodes
................................... 35
Extension
................................... 100
Extension kit for heating circuit with
mixer
.......................................... 96
External blocking
........................ 104
External connections
................... 100
External demand
......................... 105
External extension
.............. 102, 103
F
Fault codes
................................. 80
Fault displa y design
..................... 78
Fault history
................................ 80
Fault memory
.............................. 80
Faults
......................................... 78
Filling program
............................ 105
Filling the system
......................... 20
Flow limiter
.................................. 35
Flow switch
................................. 35
Flow temperature s ensor
.............. 91
Flue gas heat exch anger
.............. 33
Function descriptions
................... 97
Fuse
........................................... 95
G
Gas combination valve
................. 25
Gas supply pres sure
.................... 25
Gas type
..................................... 22
H
Heating curve
.............................. 43
Heating curve level
...................... 44
Heating curve slope
..................... 44
Heating mode
......................... 97 , 99
Heating progr am changeover
....... 104
Heat‐ up time
............................... 109
I
Ignition
........................................ 34
Initial start‐ up
.............................. 20
Internal extension
............... 100, 101
Ionisation curr ent
......................... 38
L
LON communication module
......... 46
LON system
................................ 46
Lower rated output
.................. 27 , 37
M
Manufacturer 's declarati on
.......... 124
Keyword index
126
Keyword index
5862 831 GB