Siemens RVD110 - 7 Function Block End-User D.h.w. Heating; Operating Lines; Program; Setpoint Adjustments

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Siemens Building Technologies Basic Documentation RVD110, RVD130 CE1P2381E
HVAC Products 7 Function block End-user d.h.w. heating 27.05.2004
7 Function block End-user d.h.w. heat-
ing
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 Release period 1 start hh:min 06:00 00:00...24:00
19 Release period 1 end hh:min 22:00 00:00...24:00
20 Release period 2 start hh:min --:-- 00:00...24:00
21 Release period 2 end hh:min --:-- 00:00...24:00
22 Release period 3 start hh:min --:-- 00:00...24:00
23 Release period 3 end hh:min --:-- 00:00...24:00
41 D.h.w. normal setpoint °C 55 variable
42 D.h.w reduced setpoint °C 40 8…normal setpoint
Setting --:-- means: Release period is inactive
7.2 D.h.w. program
The d.h.w. program of the RVD110 / RVD130 affords 3 release periods per day. Also,
every weekday can have different release periods. Each release period is defined by a
start and an end time.
When entering ”1-7” on operating line 17, the d.h.w. program applies to all weekdays.
The entry can be simplified as follows: If the times for the weekend differ from those for
the other weekdays, first enter the times for the entire week and then change weekdays
6 and 7 as required.
The settings are sorted and overlapping release periods combined.
When setting --:-- for the start or the end, the release period will be negated.
However, the release of d.h.w. heating can also take place according to other pro-
grams. The selection is made on operating line 101.
7.3 Setpoint adjustments
• The nominal d.h.w. setpoint is to be set on operating line 41. Its setting range de-
pends on the type of plant (for details, refer to section 16.5 “Maximum setpoint“.
• The reduced d.h.w. setpoint can be adjusted on operating line 42 between 8 °C and
the nominal setpoint. In connection with the d.h.w. program, it takes effect between
the release phases (refer to the 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