Function Block End-User D.h.w; Operating Lines; Heating Program; Adjustment Of Setpoints - Siemens RVD230 Basic Documentation

32/130
Siemens Building Technologies
HVAC Products
7

Function block End-user d.h.w.

7.1

Operating lines

Line Function, parameter
17 Weekday for entering the d.h.w. program
18 Start of release period 1
19 End of release period 1
20 Start of release period 2
21 End of release period 2
22 Start of release period 3
23 End of release period 3
41 Setpoint d.h.w. temperature Normal
42 Setpoint d.h.w. temperature Reduced
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)
w
BW
Nom
Red
06:00
Nom Nominal setpoint
Red Reduced setpoint
t Time
w D.h.w.setpoint
BW
Basic Documentation RVD230
7 Function block End-user d.h.w.
Unit
hh:min
hh:min
hh:min
hh:min
hh:min
hh:min
°C
°C
08:00 11:30 13:30
Factory setting Range
Current weekday 1...7, 1-7
06:00 --:-- / 00:00...24:00
22:00 --:-- / 00:00...24:00
--:-- --:-- / 00:00...24:00
--:-- --:-- / 00:00...24:00
--:-- --:-- / 00:00...24:00
--:-- --:-- / 00:00...24:00
55 variable
40 8... Normal setpoint
t
16:00
CE1P2383en
27.05.2004