Operation Manual

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Siemens Schweiz AG User Manual CE1U2354en
HVAC Products Buffer storage tank 23. August 2007
T
t
Bx
TKx
SDon
SDoff
On
Off
2359Z138
QX
TKx Boiler temp
Bx Actual value of comparison temperature
On / Off Boiler pump
SDon Temperature differential ON
SDoff Temp diff off
6.16 Buffer storage tank
Automatic locks
Line no. Operating line
4720 Auto generation lock
None.
With B4
With B4 and B41 / B42
4722 Temp diff buffer/HC
4723 Temp diff buffer/CC
4724 Min st tank temp heat mode
4726 Max stor temp cooling mode
None
Function is deactivated.
With B4:
Sensor B4 is used to for locking and release of the heat source.
With B4 and B41 / B42:
Sensor B4 is used for the release of the heat source. For the heat generation lock,
sensor B42 is used, and if this is not available, then B41.
If the temperature differential ∆T between the buffer storage tank and heat request from
the heating circuit is sufficiently large, the heat required by the heating circuit is drawn
from the buffer storage tank. The heat source is locked.
Using “Temp diff buffer/HC“, the mixing valve boost of the temperature request from the
heating circuit can be compensated.
A
uto generation lock
Temp diff buffer/HC