Viessmann Vitocrossal 200 Service Instructions For Contractors page 84

Keyword index
Keyword index
A
Air pressure switch
■ Combustion chamber pressure moni-
toring (LDW2).................................39
■ Fan pressure monitoring (LDW1)...38
B
Boiler door
■ Opening..........................................26
Boiler water requirements..................75
Burner
■ Cleaning.........................................33
■ Fitting..............................................33
Burner control unit
■ Display and programming unit........40
■ Flow chart.......................................55
C
Changing operating parameters........45
■ Maximum boiler water temperature 45
■ Maximum operational output..........45
Checking the burner gauze assembly31
Checking the CO2 content.................19
Checking the gas train valves............35
Checking the gas type.......................10
Checking the ignition electrodes........32
Checking the ionisation electrode......32
Checking the mixer............................37
Checking the system pressure...........36
Cleaning the combustion chamber....27
Cleaning the heating surfaces...........27
CO2 test
■ At lower heating output...................21
■ At upper heating output..................20
■ Preparations...................................19
Codes at the control unit, adjustment 65
Component overview.........................63
Condensate drain...............................31
Condensate drain system..................28
Connection diagram
■ Burner control unit..........................57
■ Mains filter unit...............................61
84
Conversion to
■ LPG P.............................................11
Converting to
■ Natural gas LL................................10
D
Diagnosis table..................................48
Display and programming unit
■ Configuration display......................43
■ Fault display...................................47
■ Information display.........................43
■ Operating display............................40
■ Service display...............................46
Displaying the ionisation current........22
E
Expansion vessel...............................36
F
Fault code..........................................48
Fault memory.....................................47
Faults without fault display.................54
Flow pressure check..........................16
G
Gas connections, checking for tight-
ness...................................................35
Gaskets and thermal insulation parts of
the boiler door, checking....................27
Gas restrictor.....................................80
H
Heating water side connections, check-
ing for leaks........................................28
I
Implementing final checks..................35
Internal system fault...........................54
L
LPG settings on the burner control unit12