Dungs MPA22 - Operating Mode Flowchart: Electronic Gas Firing (Continued); Ignition and Pre-Ignition Sequence

Printed in Germany / M-MT-BOS
• Edition 11.99 • # 231 763
68 … 112
Move servo drive for air to ignition
point P0.
Pre-ignition
Safety period without flame message
Safety period with flame message
Stabilization time
At ignition point P0
Go to characteristic point P1 from
ignition point P0: Up arrow or Down
arrow lights up accordingly.
Display in operating mode
Gas firing, electronic
modulation
Gas firing, pneumatic
modulation
P
S
G
L/A
h
l,m
3
If valve test switched on
but not yet performed
P
S
i
G
L/A
h
l,m
3
P
S
i
G
L/A
h
l,m
3
i
P
S
i
G
L/A
h
l,m
3
P
S
i
G
L/A
h
l,m
3
P
S
i
G
L/A
h
l,m
3
2
3
4