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5.4.12 Configuration diagram 1-CD p-p - solar water heating with 2 cylinders and 2nd pump and
external heat exchanger
L
N R1 N1 R2 N2 R3 R3 R4 R4 R5 R5
230V
R1
AC
WMZ
S8
6720613732-04.1 SD
Fig. 24
R1
Pump SP, solar circulation system
R2
Pump PD, heat exchanger
R3
Pump PE, thermal disinfection (option)
R4
Pump PC, 2nd heat consumer
R5
Valve DWUD, anti-icing system (option)
S1
Temperature sensor (T1), collector FSK
S2
Solar cylinder bottom temperature sensor (T2)
S3
Cylinder C bottom temperature sensor (TC)
S4
Cylinder C top temperature sensor (required for shutdown at 95 °C)
S5
Solar cylinder top temperature sensor (option)
S6
Temperature sensor (TD), external heat exchanger
S7
Flow heat meter WMZ temperature sensor (option)
S8
Return heat meter WMZ temperature sensor (option)
WMZ Heat meter (option)
L3 N3 L4 N4 L5 N5
R2
R3
S1
S7
R1
R4
6 720 644 593 (2010/04)
ELECTRICAL CONNECTIONS (FOR ENGINEERS ONLY)
S1 S2 S3 S4 S5 S6 S7 S8 I9
R4
R5
S1 S2 S3 S4
S5
S2
S4
S6
R5
S3
R2
S5
S6 S7 S8 WMZ
R3
33
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