140/166
Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E
HVAC Products Functions with no settings 15.07.2002
7.5 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 120) by more than twice the switching differential (line
41
OEM).
TBWx < TBWR - 2 SDBW
When the d.h.w. push is triggered, the storage tank is charged once until the nominal
d.h.w. temperature setpoint (operating line 13) is reached.
Then, normal operation according to the d.h.w. heating program is resumed.
t
2379D10
TBWw
TBWR
TBWw
TBWR
2
·
SDBW
SDBW
SDBW
Push
TBWx
SDBW Switching differential d.h.w.
TBWw Nominal d.h.w. temperature setpoint
TBWR Reduced setpoint of the d.h.w. temperature
Benefit
Description
Process
Effect
Example
To Next Page
Loading...
