BC10 basic controller
10
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Installation instructions Logamax plus GB142-24/30/45/60 • version 10/2007
Buderus • http://www.buderus.net
We reserve the right to make any changes due to technical modifications!
10.2 Carrying out additional tasks
10.2.1 Carrying out a flue gas test
The "Chimney Sweep"
d
button is used for the flue gas test.
The heating control system works at the maximum flow
temperature for 30 minutes. This is set on the BC10 basic
controller using the "maximum heater temperature" knob.
During flue gas testing the decimal point lights up in the
display.
z
Press and hold the "Chimney Sweep"
d
button
(< 5 seconds) until the decimal point is displayed.
z
Carry out the flue gas test.
z
Press the "Chimney Sweep"
d
button to interrupt the
flue gas test.
10.2.2 Selecting partial load operation (e. g. during flue
gas testing)
You can operate the boiler at a reduced boiler capacity
during flue gas testing. This reduction is only effective for the
duration of the flue gas test.
z
Press the "Chimney Sweep"
d
button (max. 2 seconds)
until the decimal point shows in the status display. This
will switch on the flue gas test.
z
Press and hold the "Chimney Sweep"
d
and "Service"
e
buttons (for approx. 5 seconds) to enter the partial
load mode.
z
Press the "Reset"
c
button to reduce the boiler capacity
percentage.
Example: boiler capacity reduced to 50 % of the rated boiler
capacity.
z
Press the "Chimney Sweep"
d
button to increase the
boiler capacity percentage.
z
When test is completed, press the "Service"
e
button
until the temperature indication is displayed.
z
Press the "Chimney Sweep"
d
button until the decimal
point is cleared from the display.
10.2.3 Switching the heating system to manual mode
In manual mode the heating system can be operated inde-
pendently of an external control unit. The boiler is operated
with the heating system temperature set on the right knob
serving as the target value.
A blinking decimal point is displayed while manual mode is
active.
z
Press the "Chimney Sweep"
d
button (for more than
5 seconds) until the decimal point in the status display
flashes.
+
L50.
