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Siemens Building Technologies
Basic documentation RVD240
CE1P2384en
HVAC Products
5 Function block Space heating
27.05.2004
more information, refer to chapter 9 (operating lines 31...33) and section 29.3
"Combination with room unit QAW70"
•
The d.h.w. setpoint is to be set on operating line 4. Its setting range depends on the
type of plant (for detailed information, refer to chapter 15 "Function block D.h.w.
heating"
•
The slope of the heating curve of each heating circuit to be set separately on operat-
ing line 5. The setting range is 2.5...40; the effective slope is 10 times smaller
For more detailed information, refer to section 12.3 "Heating curve "
The setpoints of the nominal temperature and of the reduced temperature as well as
that for frost protection operation are to be entered directly in °C room temperature.
They are independent of whether or not the control uses a room sensor. When using no
room temperature sensor, the heating curve or the room model will be considered.
5.3 Heating
program
The heating program of the RVD240 provides a maximum of 3 heating periods per day;
also, every weekday can have different heating periods. Every heating period is defined
by a start and an end time.
Using "1-7" on operating line 6, it is possible to enter a heating program that applies to
all days of the week. 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 heating periods combined.
By setting --:-- at the start or at the end, the heating period will be canceled.
With the QAW70 room unit, the heating program can be changed from a remote loca-
tion.
