CE1P2522E / 30.03.2000
Basic Documentation RVL470
Siemens Building Technologies
66/68
Engineering
Landis & Staefa Division
20.2. Connection diagrams
20.2.1. Basic connections on the low voltage side
AC
2
30
V
B9
B7
B71
B5
D1 D2
25
2
2
A
0
1
20.2.2. Basic connections on the mains voltage side
A
C
23
0
V
A
C
230
V
1.
2.
F1
F2
25
2
2
A
0
2
Diagram on the left:
Connections for plant types 1, 3, 4 and 6 (mixing valve or district heat)
Diagram on the right:
Connections for plant types 2 and 5 (boiler with a two-stage burner)
A6
Room unit QAW50 or QAW70
B1
Flow or boiler temperature sensor
B5
Room temperature sensor
B7
Return temperature sensor (primary circuit)
B71 Return temperature sensor (secondary circuit)
B9
Outside sensor
E1
Two-stage burner
F1
Thermal reset limit thermostat
F2
Manual reset safety limit thermostat
LPB Data bus
M1
Heating circuit pump/circulating pump
N1
Controller RVL470
S1
Remote operation "Operating mode"
S2
Remote operation “Flow temperature setpoint”
Y1
Actuator for three-position control
*
Wire link for locking the district heat parameters