BC10 basic controller
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Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004
Buderus Hydronic Systems • http://www.buderus.net
10.2 Carrying out additional tasks
10.2.1 Carrying out a flue gas test
The "Chimney Sweep"
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 tempera-
ture" knob. During flue gas testing the decimal point
lights up in the display.
z
Press and hold the "Chimney Sweep"
button
(< 5 seconds) until the decimal point is displayed.
z
Carry out the flue gas test.
z
Press the "Chimney Sweep"
button to interrupt the
flue gas test.
10.2.2 Selecting partial load operation (e. g. during
flue gas testing)
You can operate the appliance at a reduced appliance
capacity during flue gas testing. This reduction is only
effective for the duration of the flue gas test.
z
Press the "Chimney Sweep"
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"
and
"Service"
buttons (for approx. 5 seconds) to enter
the partial load mode.
z
Press the "Reset"
button to reduce the appliance
capacity percentage.
Example: appliance capacity reduced to 50 % of the
rated appliance capacity.
z
Press the "Chimney Sweep"
button to increase
the appliance capacity percentage.
z
When test is completed, press the "Service"
button until the temperature indication is displayed.
z
Press the "Chimney Sweep"
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
independently of an external control unit. The appliance
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"
button (for more than
5 seconds) until the decimal point in the status
display flashes.
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