Boiler - Siemens AVS75.39 Series User Manual

Operating mode
Operating mode
Siemens
Building Technologies
6.9

Boiler

Line no. Operating line
2200 Operating mode
Continuous operation ¦ Automatic ¦ Auto, extended running time
2203 Release below outside temp
2204 Release above outside temp
2205 With Economy mode
Off ¦ On DHW ¦ On
2208 Full charging buffer
Off ¦ On
Continuous operation
The boiler is constantly released and the minimum boiler temperature maintained is
the parameterized TKMin.
The boiler will only be locked when all connected heating circuits are set to
Protection mode and when there is no valid temperature request.
Automatic
The boiler will be released as soon as there is at least one valid temperature
request. Once the boiler is released, the required minimum boiler temperature will
always be maintained. The boiler will be locked when no valid temperature request
is active. This means that with this operating mode, the boiler setpoint will be
maintained at the required minimum only if a temperature request is active.
TK
°C
TKw
70
60
50
TKmin
40
30
20
10
0
20 10 0
Auto mode, with extended burner running time
The boiler will be released as soon as there is at least one valid temperature
request. When the boiler is released, the burner will be switched on when the boiler
temperature drops below the request from the consumers. The required minimum
boiler temperature is maintained only if the burner had to be switched on due to a
request from one of the consumers. This means that since the boiler temperature
can drop below its minimum, depending on the request, this operating mode leads
to a smaller number of burner switching cycles and, therefore, longer burner on
times.
User manual RVS43.345
The settings in detail
TAgem
-10 -20 °C
91 / 239
CE1U2354en_021
2013-09-02