Push - Siemens RVA63.242 User Manual

Benefit
Description
Process
Effect
Example
Siemens Building Technologies
Landis & Staefa Division
6.9 D.h.w. push
Availability of d.h.w. is also ensured during non-occupancy times
If, due to unexpected demand, the d.h.w. storage tank is emptied, the d.h.w. push
provides one-time charging of the storage tank until the nominal d.h.w. temperature
setpoint is reached.
The d.h.w. push is triggered as soon as the actual d.h.w. temperature falls below the
reduced d.h.w. setpoint (line 51
differential (line 120).
TBWx < TBWR - 2 SDB
When the d.h.w. push is triggered, the storage tank is charged once until the nominal
d.h.w. temperature setpoint (line 120) is reached.
Then, normal operation according to the d.h.w. heating program is resumed.
TBWw
SDBW
TBWR
TBWw
TBWR
SDBW Switching differential d.h.w.
TBWw Nominal setpoint of the d.h.w. temperature
TBWR Reduced setpoint of the d.h.w. temperature
Basic Documentation RVA53.242, RVA53.242
General control processes
) by an amount that exceeds twice the switching
OEM
TBWx
2

Push

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SDBW
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SDBW
t
t
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CE1P2373E
26.03.2001