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Siemens
Basic Documentation RVP360
CE1P2546en
Building Technologies
15 Function block: Multifunctional relay
2017-07-24
Op. line
121
Op. line
141
Controller
(heating
circuit)
Operating
mode
Heating pro-
gram, holidays
Circulating
pump
2
4
A (HC1)
06:00...18:00, opti-
mized switching on
produces a forward
shift of 2 hours
Circulating
pump runs
from 4:00 to
23:00
A (HC2)
05:00...21:00
B (HC1)
07:00...22:00
B (HC2)
08:00...23:00
In holiday mode, the circulating pump runs according to the setting made, as
shown in the following table:
Op. line
121
Op. line
141
Operation of circulating pump
0
3, 4 or 5 Circulating pump OFF when own controller operates in hol-
iday mode
1
3, 4 or 5 Circulating pump OFF when all controllers in the same
segment operate in holiday mode
2
3, 4 or 5 Circulating pump OFF when all controllers in the intercon-
nected system operate in holiday mode
15.2.5 Collector pump
The multifunctional relay is used to control the collector pump.
Activation of the collector pump is dependent on the temperatures acquired in the
storage tank and the collector.
Op. line 141
Function
6
Collector pump
The storage tank sensor(s) used is (are) selected via operating line 126.
The settings required for solar d.h.w. charging must be made via operating lines
201 – 208.
Example 2
Operation of circulating
pump during holiday
periods