Siemens AVS75.39 Series User Manual page 189

chimney sweep
Manual operation
Siemens
Building Technologies
Line no. Operating line
7130 Chimney sweep function
The burner is switched on. In order to achieve as continuous a burner operation as
possible, only the boiler temperature maximum limitation is enabled as switch-off
point.
First, all connected loads will be locked to ensure the boiler temperature will reach
the setpoint of 64 °C as quickly as possible.
When the minimum temperature of 64 °C is attained, the available heating circuits
are switched on one by one, using a dummy load, to make sure the heat generated
by the boiler is drawn off so that the burner will remain in operation.
During enabled chimney sweep function, the boiler temperature maximum
limitation remains active for safety reasons.
The function is deactivated by setting -.- on this operating line, or automatically
after a timeout of 1 hour.
Line no. Operating line
7140 Manual control
When manual control is activated, the relay outputs are no longer energized and
deenergized according to the control state but are set to a predefined manual
control state in accordance with their functions (see table below).
The burner relay switched on in manual control can be switched off by the
electronic temperature controller (TR).
User manual RVS43.345
The settings in detail
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CE1U2354en_021
2013-09-02