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Siemens Building Technologies
Basic Documentation RVP540 / RVP550
CE1P2488en
HVAC Products
Description of the heating engineer settings
18.10.2002
The extent to which the switch-on point is shifted forward in time depends on the num-
ber of d.h.w. heating cycles permitted in a 24-hour period (operating line 774):
0
6
12
17
24
5
h
23
79
Z
29
16
4.224.3 Operation according to the d.h.w. time switch program
Setting 2
For d.h.w. heating, the d.h.w. time switch program of the local controller (RVP540) is
taken into account. The set switching times of that program are then used to change
over between the nominal d.h.w. setpoint (operating line 26) and the reduced d.h.w.
setpoint (operating line 770).
D.h.w. heating takes place independent of the heating circuit programs.
With this d.h.w. heating program, it is possible to have a maximum of 3 heating periods
per day. The forward shift of the switch-on times is inactive.
0
6
12
18
24
h
23
73
Z
24
4.225 Program selection circulating pump
•
The circulating pump runs only during the selected periods of time
•
No unnecessary heat losses during the periods of time when there is no demand for
d.h.w.
Defines the time switch program according to which the circulating pump is switched on
and off.
Setting range
Unit
Factory setting
0...3 –
1
Depending on the setting made, the circulating pump will be operated according to the
following time switch program:
0
For the switching program of the circulating pump, the switching program of the
controller internal heating circuit will be adopted.
1
Switching program according to the selected d.h.w. release (operating line 771).
2
According to the free time switch program
3
According to the time switch program for d.h.w. heating
In addition to the times according to the switching program selected above, the circula-
ting pump can also run when it was activated by the legionella function (operating line 794).
Note
Example:
Heating periods
Example:
Benefit
Description
Setting
Effect
Note
