Function Block "Enduser Space Heating; Operating Lines; Setpoints; General - Siemens RVL481 Basic Documentation

Caution
Siemens
Building Technologies
5 Function block "Enduser space
heating"
This function block contains settings that the enduser himself can make.
5.1

Operating lines

Line Function, parameter
1 Setpoint of NORMAL heating
2 Setpoint of REDUCED heating
3 Setpoint of holiday mode / frost protection
4 Weekday for the heating program
5 First heating period, start of NORMAL heating
6 First heating period, start of REDUCED heating
7 Second heating period, start of NORMAL heating
8 Second heating period, start of REDUCED heating
9 Third heating period, start of NORMAL heating
10 Third heating period, start of REDUCED heating
11 Holiday period
12 Date of first day of holiday
13 Date of last day of holiday
14 Heating curve, flow temperature setpoint at an outside
temperature of 15 °C
15 Heating curve, flow temperature setpoint at an outside
temperature of –5 °C
5.2

Setpoints

5.2.1

General

The setpoints of the NORMAL and the REDUCED room temperature and of frost pro-
tection for the plant / holiday mode are entered directly in °C room temperature. They
are independent of whether or not the control uses a room temperature sensor.
5.2.2

Frost protection for the building

The lowest valid room temperature setpoint always corresponds to at least the setpoint
of holiday mode / frost protection (setting on operating line 3), even if lower values have
been entered as the setpoints of the NORMAL and the REDUCED room temperature
(settings on operating lines 1 and 2).
If a room sensor is used and the room temperature falls below the holiday / frost protec-
tion setpoint, ECO – if available – will stop OFF until the room temperature has risen
1 °C above the holiday / frost protection setpoint.
5.3

Heating program

The heating program of the RVL481 provides a maximum of 3 heating periods per day;
also, every weekday may have different heating periods.
The entries to be made are not the switching times, but the periods of time during which
the NORMAL room temperature shall apply. Usually, these periods of time are identical
to the building's occupancy times. The actual switching times for the change from the
REDUCED to the NORMAL room temperature, and vice versa, are calculated by the
optimization function. (Precondition: Optimization is activated).
Using the setting "1-7" on operating line 4, it is possible to enter a heating program that
applies to all weekdays. This simplifies the settings: If the weekend times differ, enter
the times for the entire week first, and then change days 6 and 7 as required.
The settings are sorted and overlapping heating periods combined.
Heating and D.h.w. Controller RVL481

5 Function block "Enduser space heating"

Factory setting (range) Unit
20.0 (0...35)
14.0 (0...35)
10.0 (0...35)
1-7 (1...7 / 1-7)
06:00 (00:00...24:00) hh:mm
22:00 (00:00...24:00) hh:mm
--:-- (00:00...24:00) hh:mm
--:-- (00:00...24:00) hh:mm
--:-- (00:00...24:00) hh:mm
--:-- (00:00...24:00) hh:mm
- (1...8)
--.-- (01.01...31.12) dd:MM
--.-- (01.01...31.12) dd:MM
30 (20...70)
60 (20...120)
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CE1P2541en
20.05.2008
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