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Siemens
User Manual
CE1U2357en
Building Technologies
3 Mounting and installation
2014-07-30
Terminal markings
Use
Terminal
Type of connector
L
Phase AC 230 V basic unit
N
L
AGP4S.05A/109
Protective earth
N
Neutral conductor
L1
Phase AC 230 V burner
S3
Output burner fault
L1
Phase burner
P
AGP8S.07A/109
Protective earth
N
Neutral conductor
T1
Burner 1st stage on
T2
Phase burner 1st stage
S3
Input burner fault
4
Input burner 1st stage hours run
SK1 Safety
loop
Q
AGP8S.02E/109
SK2 Safety
loop
N
Neutral conductor
R
AGP8S.03A/109
Protective earth
Q3
DHW charging pump / diverting valve
N
Neutral conductor
S
AGP8S.03B/109
Protective earth
Q2
1st heating circuit pump
Y1
1st heating circuit mixing valve opening T
AGP8S.04B/109
N
Neutral conductor
Protective earth
Y2
1st heating circuit mixing valve closing
N
Neutral conductor
U
AGP8S.03C/109
Protective earth
QX1
1st
multifunctional
output
N
Neutral conductor
S
AGP8S.03B/109
Protective earth
Q6
2nd heating circuit pump
Y5
2nd heating circuit mixing valve opening T
AGP8S.04B/109
N
Neutral conductor
Protective earth
Y6
2nd heating circuit mixing valve closing
N
Neutral conductor
U
AGP8S.03C/109
Protective earth
QX2 2nd
multifunctional
output
Use
Terminal
Type of connector
BSB
Service
tool
OCI700
-
-
X60
Radio module AVS71.390
-
-
X50
extension module AVS75.390
-
AVS82.490/109
X30
Operator unit / boiler control panel
-
AVS82.491/109
CL+
BSB data
AGP4S.02A/109
CL-
BSB ground
b
CL+
Room unit 2 data
AGP4S.02A/109
CL-
Room unit 2 ground
b
CL+
Room unit 1 data
AGP4S.02A/109
CL-
Room unit 1 ground
b
AGP4S.03D/109
Mains voltage
Low-voltage