Plant Type 3 - Storage Tank With Diverting Valve; Plant Type 4 - Instantaneous D.h.w. Heating Via Heat Exchanger; Plant Type 5 - Only Electric Immersion Heater - Siemens RVL471 Basic Documentation

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3.2.11 D.h.w. plant type 3 – storage tank with diverting valve
Y3
K6
Charging of the d.h.w. storage tank through control of the diverting valve. Acquisition of
the d.h.w. temperature with one or 2 sensors or thermostats. Circulating pump and
electric immersion heater are optional.
3.2.12 D.h.w. plant type 4 – instantaneous d.h.w. heating via
heat exchanger
N1
Y7
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.
3.2.13 D.h.w. plant type 5 – only electric immersion heater
K6
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 is optional.
A6 Room unit QAW50 or QAW70
B1 Flow / boiler sensor
B3 D.h.w. flow sensor
B31 Storage tank sensor / thermostat 1
B32 Storage tank sensor / thermostat 2
B5 Room sensor
B7 Return sensor (primary circuit)
B71 Return sensor (secondary circuit)
B9 Outside sensor
E1 Heat source (boiler / heat converter)
Basic Documentation RVL471
3 Fundamentals
B31
M4
B32
B3
M4
M4
E2 Consumer (space)
LPB Data bus
K6 Electric immersion heater
M1 Heating circuit pump / circulating pump
M3 Charging pump
M4 Circulating pump
N1 Controller RVL471
Y1 Heating circuit mixing valve
Y3 Diverting valve
Y7 D.h.w. mixing valve
CE1P2524E
23.10.2002