D.h.w. Push - Siemens RVA47.320 User Manual

Benefit
Description
Process
Effect
Example
140/166
Siemens Building Technologies
HVAC Products
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.
TBWw
SDBW
TBWR
TBWw
TBWR
SDBW Switching differential d.h.w.
TBWw Nominal d.h.w. temperature setpoint
TBWR Reduced setpoint of the d.h.w. temperature
Basic Documentation RVA47.320
Functions with no settings
TBWx
Push
SDBW
·
2 SDBW
t
CE1P2379E
15.07.2002