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5.4.14 Configuration diagram 1-CD p-v - solar water heating with 2 cylinders connected via valve and
external heat exchanger
L
N R1 N1 R2 N2 R3 R3 R4 R4 R5 R5
230V
R1
AC
R1
Fig. 26
R1
Pump SP, solar circulation system
R2
Pump PD, heat exchanger
R3
Pump PE, thermal disinfection (option)
R4
Valve DWUC for cylinder selection
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
S8
WMZ
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 S6 S7 S8 WMZ
S5
S2
S4
S6
S3
R5
R2
R3
35
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