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Siemens
Heating and D.h.w. Controller RVL481
CE1P2541en
Building Technologies
3 Fundamentals
20.05.2008
Precontrol with heat exchanger
Precontrol with district heat connection, with demand-compensated control of the sec-
ondary flow temperature acting on the valve in the primary return.
Heat demand signal from data bus. No heating program.
Can be combined with d.h.w. types:
•
with types 1 and 2 via hydraulic connection at and
•
with type 5 without hydraulic connection
25
41
S0
6
B7
B71
Y1
N1
1, 2
3.2.3
D.h.w. plant types
Legend for sections 3.2.2 and 3.2.3:
A6
Room unit
E2
Consumer (space)
B1
Flow / boiler sensor
LPB Data bus
B3
D.h.w. flow sensor
K6
Electric immersion heater
B31
Storage tank sensor / thermostat 1
M1
Heating circuit pump / circulating pump
B32
Storage tank sensor / thermostat 2
M3
Charging pump
B5
Room sensor
M4
Circulating pump
B6
Collector sensor
M5
Collector pump
B7
Return sensor (primary circuit)
N1
Controller RVL481
B71
Return sensor (secondary circuit)
Y1
Heating circuit mixing valve / 2-port valve
B9 Outside
sensor
Y3 Changeover
valve
E1
Heat source (boiler / heat converter)
Y7
D.h.w. mixing valve
No d.h.w. heating
.
D.h.w. heating with charging pump
Charging of d.h.w. storage tank through control of the charging pump. Acquisition of the
d.h.w. temperature with one or 2 sensors or thermostats. Circulating pump and solar
collector or electric immersion heater are optional.
M3
M4
25
42
S
0
1
K6
N1
B31
B32
B6
M5
Heating circuit
plant type 6
D.h.w. plant type 0
D.h.w. plant type 1