Siemens RVD230 - 7 Function Block End-User D.h.w; Operating Lines; Heating Program; Adjustment of Setpoints

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Siemens Building Technologies Basic Documentation RVD230 CE1P2383en
HVAC Products 7 Function block End-user d.h.w. 27.05.2004
7 Function block End-user d.h.w.
7.1 Operating lines
Line Function, parameter Unit Factory setting Range
17 Weekday for entering the d.h.w. program Current weekday 1…7, 1-7
18 Start of release period 1 hh:min 06:00 --:-- / 00:00…24:00
19 End of release period 1 hh:min 22:00 --:-- / 00:00…24:00
20 Start of release period 2 hh:min --:-- --:-- / 00:00…24:00
21 End of release period 2 hh:min --:-- --:-- / 00:00…24:00
22 Start of release period 3 hh:min --:-- --:-- / 00:00…24:00
23 End of release period 3 hh:min --:-- --:-- / 00:00…24:00
41 Setpoint d.h.w. temperature Normal °C 55 variable
42 Setpoint d.h.w. temperature Reduced °C 40 8… Normal setpoint
7.2 D.h.w. heating program
The d.h.w. heating program of the RVD230 provides a maximum of 3 release periods
per day; also, every weekday can have different release periods. Every release period
is defined by a start and an end time.
Using "1-7" on operating line 17, it is possible to enter a d.h.w. heating program that
applies to all weekdays. This simplifies the settings: If the weekend times are different,
first enter the times for the entire week, then change days 6 and 7 as required.
The settings are sorted and overlapping release periods combined.
By setting --:-- at the start or at the end, the release period will be cancelled.
However, d.h.w. heating can also be released according to other programs. The selec-
tion is to be made on operating line 101.
7.3 Adjustment of setpoints
• The nominal d.h.w. temperature setpoint is to be adjusted on operating line 41. Its
setting range depends on the type of plant (for details, refer to section 19.5)
• The reduced d.h.w. temperature setpoint can be adjusted on operating line 42 between
8 °C and the nominal setpoint. It is used with the d.h.w. program between the release
periods (refer to above section 7.2)
Nom
Red
w
BW
2381D06
t
06:00 08:00 11:30 13:30 16:00
Nom Nominal setpoint
Red Reduced setpoint
t Time
w
BW
D.h.w.setpoint