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Siemens Building Technologies Basic Documentation RVL471 CE1P2524E
HVAC Products 29 Engineering 23.10.2002
29 Engineering
29.1 Connection terminals
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
N
B9 B7 B71B5
Ux
B31 B32
B3
N L F1 Y1 F2 Y2 F3 Q1 Q3 F7 Q4 K6 F6 Y7 Y8
F4 K4 F5 K5 Y3
M
2524Z05
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
M
29.1.1 Low-voltage side
DB Data LPB
MB Ground for LPB
A6 PPS (point-to-point interface), connection of room unit
MD Ground for PPS
B9 Outside sensor
B1 Flow or boiler sensor
M Ground for sensors, changeover contacts and signal output (e times)
B3 D.h.w. flow sensor
Ux Heat demand signal
B31 Storage tank sensor / thermostat 1
B7 Return sensor (primary circuit)
H1 Changeover contact "Operating mode"
B32 Storage tank sensor / thermostat 2
B5 Room sensor
B71 Return sensor (secondary circuit)
H4 Minimum stroke limitation (Y
min
contact)
H3 Contact for locking the district heat parameters
In addition to the standard connection terminals, there is an auxiliary terminal M avail-
able.
29.1.2 Mains voltage side
N Neutral conductor AC 230 V
L Live conductor AC 230 V
F1/F4 Input for Y1/K4
Y1/K4 Heating circuit mixing valve OPEN / first burner stage
F2/F5 Input for Y2/K5
Y2/K5 Heating circuit mixing valve CLOSED / second burner stage
F3 Input for Q1 and Q3 / Y3
Q1 Heating circuit pump / circulating pump
Q3/Y3 Charging pump or diverting valve
F7 Input for Q4 and K6
Q4 Circulating pump
K6 Multifunctional relay
F6 Input for Y7 and Y8
Y7 D.h.w. mixing valve / valve OPEN
Y8 D.h.w. mixing valve / valve CLOSED
In addition to the standard connection terminals, there are 2 auxiliary terminals for N and
available.
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