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Siemens Switzerland Ltd  User manual RVS61.843 CE1U2355en_02 
HVAC Products  3 Mounting and installation  23. November 2007 
Terminal markings RVS61.843 
 
  Use  Terminal  Connector type 
L  Mains connection, live AC 230 V 
 
Mains connection, protective earth 
N  Mains connection, neutral conductor 
L 
 
N 
 
AGP4S.03E/109 
E9 
Low-pressure 
E10 
High-pressure 
K 
AGP4S.02J/109 
EX1 
Multifunctional input EX1
 
EX2 
Multifunctional input EX2 
EX3 
Multifunctional input EX3 
EX4 
Multifunctional input EX4 
EX5 
Multifunctional input EX5 
EX6 
Multifunctional input EX6 
EX7 
Multifunctional input EX7 
B 
AGP8S.07A/109 
E11 
Overload protection compressor 1 
K1 
Compressor stage 1 
Q 
AGP8S.02E/109 
N Neutral conductor 
 
Protective earth 
Q3  DHW charging pump / diverting valve 
R 
AGP8S.03A/109 
N Neutral conductor 
 
Protective earth 
Q2  1st heating circuit pump 
S 
AGP8S.03B/109 
Y1 
1st heating circuit mixing valve 
opening
 
N Neutral conductor 
 
Protective earth 
Y2 
1st heating circuit mixing valve 
closing 
 
T 
AGP8S.04B/109 
N Neutral conductor 
 
Protective earth 
Q8 
K19 
Source pump 
Fan 
U 
AGP8S.03C/109 
N Neutral conductor 
 
Protective earth 
Q9 Condenser pump 
V 
AGP8S.03D/109 
QX1  1. Multifunctional output 
N Neutral conductor 
 
Protective earth 
QX2  2. Multifunctional output  
W 
 
AGP8S.04E/109 
N Neutral conductor 
 
Protective earth 
QX3  3. Multifunctional output 
X 
AGP8S.03E/109 
N Neutral conductor 
 
Protective earth 
QX4  4. Multifunctional output 
Y 
AGP8S.03G/109 
QX5  5. Multifunctional output 
N Neutral conductor 
 
Protective earth 
QX6  6. Multifunctional output 
Z 
AGP8S.04C/109 
 
Mains voltage