Viessmann VITOCROSSAL 200 CM2 Service Instructions For Contractors page 39
400 to 620 kw gas condensing boiler with matrix cylinder burner, for open flue and room sealed operation, permissible operating pressure 6 bar
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Also See for VITOCROSSAL 200 CM2:
- Technical manual (100 pages) ,
- Installation instructions manual (52 pages) ,
- Service instructions manual (76 pages)
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Flow diagram for burner control unit
Description of state:
Phase
Dis-
Description
play
System
"A"
System start
start
Fan ramp-up, system start
Forced ventilation, system start
Valve test
"P"
Fan ramp-up for valve test
Safety relay test
Relay/valve test BV 1
Test time BV 1
Relay/valve test BV 2
Test time BV 2
Start-up meter, initialisation
Standby
"0"
Standby
Start-up
"1"
Flame amplifier test
Gas fan, air pressure switch and boiler water temperature sensor test
"2"
Fan ramp-up
"3"
Pre-purge
Set the start-up load
"4"
Pre-ignition
"5"
Ignition safety time
Flame detection safety time
Operation
"6"
Flame stabilising time
"7"
Start-up, partial load
Modulating operation
Adjusting shutdown load
Shutdown
"8"
Reheat
Fan ramp-up, post-purge
Post-purge
Waiting
"U"
Waiting for restart
"C"
Waiting for mains gas pressure
Fault
"9"
Forced ventilation fault
states
"10"
Flame tear-off
"11"
Safety shutdown
"F"
Fault shutdown
Flow diagram for burner control unit
(cont.)
Duration
10 s
max. 20 s
20 s
max. 20 s
0.9 s
2 s
1.1 s
2 s
1.1 s
0.1 s
0 ... s
max. 50 s
max. 20 s
max. 20 s
10 s
25 s
2 s
2.3 s
max. 0.51 s
15 s
2.5 s
0 to 24 h
0.1 s
min. 0.5 s,
max. 10 s
max. 20 s
10 s
5 min
5 min
20 s
0 ... s
0 ... s
0 ... s
39
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