Buderus Logamatic 4211 - Page 66

Modules and their functions
9
Logamatic 4211 - Subject to technical modifications.
66
Heating circuit and DHW function
Heating circuit and DHW switch
B
The positions 0 and manual are special settings
reserved for heating contractors only.
Current functions are indicated by LEDs.
: As the base load, only the first stage will be
enabled for single and two-stage burners.
The second stage is at zero volts. The burner
servomotor cannot be reversed. For
modulating burners, the burner output can be
infinitely increased using
5 and infinitely
reduced using
6.
AUT: The burner operates in automatic mode.
0: The burner is switched OFF. Except when
the burner emergency switch is set to
4.
max I+II: The burner operates continuously at
maximum output.
USER INFORMATION
In standard mode, the switch should be set
to "AUT".
Heating circuit 0 or boiler pump and cylinder
primary pump are switched on.
AUT: Heating circuit 0 or boiler circuit and DHW
circuit operate in automatic mode.
0: Only heating circuit 0 or boiler pump, cylinder
primary pump and DHW circulation pump are
switched off.The control functions continue to
operate.
Q
"Flue gas test" (explanation Æ chapter 10).
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