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ELECTRICAL CONNECTIONS (FOR ENGINEERS ONLY)
5.4.9 Configuration diagram 1-AD - solar water heating with 2nd collector array and external heat
exchanger
L
N R1 N1 R2 N2 R3 R3 R4 R4 R5 R5
230V
R1
AC
R1
WMZ
S8
Fig. 21
R1
Pump SP, solar circulation system
R2
Pump PD, heat exchanger
R3
Pump PE, thermal disinfection (option)
R4
Pump PA, 2nd collector array
R5
Valve DWUD, anti-icing system (option)
S1
Temperature sensor (T1), collector FSK, array 1
S2
Solar cylinder bottom temperature sensor (T2)
S3
Solar cylinder top temperature sensor (required for shutdown at 95 °C)
S5
Temperature sensor (TA), collector FSK, array 2
S6
Temperature sensor (TD), external heat exchanger
S7
Flow heat meter WMZ temperature sensor (option)
S8
Heat meter WMZ return temperature sensor (option)
WMZ Heat meter (option)
30
L3 N3 L4 N4 L5 N5
R2
R3
S5
S1
R4
S7
6720613732-14.1 SD
S1 S2 S3 S4 S5 S6 S7 S8 I9
R4
R5
S1 S2 S3
S6
R5
R2
6 720 644 593 (2010/04)
S5 S6 S7 S8 WMZ
S3
S2
R3
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