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Siemens
Heating and D.h.w. Controller RVL481
CE1P2541en
Building Technologies
3 Fundamentals
20.05.2008
D.h.w. heating with mixing group
Charging of d.h.w. storage tank through control of the mixing valve according to own
temperature sensor in the storage tank flow. Acquisition of the d.h.w. temperature with
one or 2 sensors or thermostats. Circulating pump and solar collector or electric immer-
sion heater are optional.
2542
S
0
2
B3
Y7
M3
M4
K6
N1
B31
B32
B6
M5
D.h.w. heating with changeover valve
Charging of the d.h.w. storage tank through control of the changeover
valve. Acquisi-
tion of the d.h.w. temperature with one or 2 sensors or thermostats. Circulating pump
and solar collector or electric immersion heater are optional.
Y3
B31
B32
M4
K6
2541
S
09
B6
M5
N1
D.h.w. heating with heat exchanger
D.h.w. heating via heat exchanger (instantaneous d.h.w. heating) through control of the
2-port valve in the heat exchanger's primary return. Acquisition of the d.h.w. tempera-
ture in the heat exchanger's secondary flow. Circulating pump is optional, but strongly
recommended.
M4
252
4S
10
B3
Y7
N1
D.h.w. heating with electric immersion heater
Charging of d.h.w. storage tank only through release of the electric immersion heater.
No control of d.h.w. heating by the controller. Circulating pump and solar collector are
optional.
M4
2
542
S
0
3
K6
N1
B6
M5
B31
B32
D.h.w. plant type 2
D.h.w. plant type 3
D.h.w. plant type 4
D.h.w. plant type 5