Siemens AVS75.39 Series User Manual page 130

Recooling
Recooling temp
Recooling DHW/HCs
Recooling collector
Solar integration
Return diversion
Temp diff ON / OFF
return diversion
Comparative temperature
return diversion
130 / 239
Siemens
Building Technologies
Line no. Operating line
4755 Recooling temp
4756 Recooling DHW/HCs
4757 Recooling collector
Off ¦ Summer ¦ Always
If the buffer storage tank had to be charged via "Charging temp max", recooling to
the recooling temperature set here takes place as soon as possible.
To recool the buffer storage tank, the 2 following functions are available:
The heat can be drawn either by space heating or the DHW storage tank. The
function is activated or deactivated via this operating line. This can be selected
separately for each heating circuit (menu "Heating circuit 1...").
When the collector is cold, the energy can be emitted to the environment via the
collector's surfaces.
Off
Recooling via the collector is deactivated.
Summer
Recooling via the collector is permitted in summer only.
Always
Recooling via the collector is activated throughout the year.
Line no. Operating line
4783 With solar integration
No ¦ Yes
Select here whether the buffer storage tank can be charged by solar energy.
Line no. Operating line
4790
Temp diff on return div
4791
Temp diff off return div
4795
Compar temp return div
B4 ¦ B41 ¦ B42
4796
Optg action return diversion
Temp decrease ¦ Temp increase
At the corresponding temperature differential between the common return sensor
B73 and the selectable comparative temperature, the return is diverted through the
lower part of the buffer storage tank.
This function can be used to either raise or lower the return temperature. It is
defined in line 4796.
In addition, set the corresponding relay output as "Buffer return valve Y15" in the
configuration relay output QX1, 2, 3, 4, 5 (line 5890, 5891, 5892, 5894, 5895) and
the common return sensor B73 to BX.
The set temperature differential determines the switch on/off point for return
diversion.
Select the buffer storage tank temperature sensor for comparison with the return
temperature to switch return diversion based on the set temperature differential.
User manual RVS43.345
The settings in detail
CE1U2354en_021
2013-09-02